Citigroup (C) 10-K 25 Feb 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Billions, except Share data, unless otherwise specified	Dec. 31, 2014	Jan. 31, 2015	Jun. 30, 2014
Document and Entity Information
Entity Registrant Name	CITIGROUP INC
Entity Central Index Key	831001
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$142.60
Entity Common Stock, Shares Outstanding		3,033,851,309
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

CONSOLIDATED_STATEMENT_OF_INCO

CONSOLIDATED STATEMENT OF INCOME (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Revenues
Interest revenue	$61,683	[1]	$62,970	[1]	$67,298	[1]
Interest expense	13,690	[1]	16,177	[1]	20,612	[1]
Net interest revenue	47,993	[1]	46,793	[1]	46,686	[1]
Commissions and fees	13,032		12,941		12,584
Principal transactions	6,698		7,302		4,980
Administration and other fiduciary fees	4,013		4,089		4,012
Realized gains on sales of investments, net	570		748		3,251
Other-than-temporary impairment losses on investments
Gross impairment losses	-432		-633		-5,037	[1]
Less: Impairments recognized in AOCI	8		98		66
Net impairment losses recognized in earnings	-424		-535		-4,971
Insurance premiums	2,110		2,280		2,395
Other revenue	2,890		2,801		253	[2]
Total non-interest revenues	28,889		29,626		22,504
Total revenues, net of interest expense	76,882	[1]	76,419	[1]	69,190
Provisions for credit losses and for benefits and claims
Provision for loan losses	6,828		7,604		10,458
Policyholder benefits and claims	801		830		887
Provision (release) for unfunded lending commitments	-162		80		-16
Total provisions for credit losses and for benefits and claims	7,467		8,514		11,329
Operating expenses
Compensation and benefits	23,959	[1]	23,967	[1]	25,119	[1]
Premises and equipment	3,178	[1]	3,165	[1]	3,266	[1]
Technology/communication	6,436	[1]	6,136	[1]	5,829	[1]
Advertising and marketing	1,844	[1]	1,888	[1]	2,164	[1]
Other operating	19,634	[1]	13,252	[1]	13,658	[1]
Total operating expenses	55,051	[1]	48,408	[1]	50,036	[1]
Income from continuing operations before income taxes	14,364		19,497		7,825
Provision for income taxes	6,864		5,867		7
Income from continuing operations	7,500		13,630		7,818
Discontinued operations
Income (loss) from discontinued operations	10		-242		-109
Gain on sale	0		268		-1
Provision (benefit) for income taxes	12		-244		-52
Income (loss) from discontinued operations, net of taxes	-2		270		-58
Net income before attribution of noncontrolling interests	7,498		13,900		7,760
Noncontrolling interests	185		227		219
Citigroup’s net income	$7,313		$13,673		$7,541
Basic earnings per share
Income from continuing operations (in dollars per share)	$2.21	[2]	$4.27	[2]	$2.53	[2]
Income (loss) from discontinued operations, net of taxes (in dollars per share)	$0	[2]	$0.09	[2]	($0.02)	[2]
Net income (in dollars per share)	$2.21	[2]	$4.35	[2]	$2.51	[2]
Weighted average common shares outstanding (in shares)	3,031.60		3,035.80		2,930.60
Diluted earnings per share
Income from continuing operations (in dollars per share)	$2.20	[2]	$4.26	[2]	$2.46	[2]
Income (loss) from discontinued operations, net of taxes (in dollars per share)	$0	[2]	$0.09	[2]	($0.02)	[2]
Net income (in dollars per share)	$2.20	[2]	$4.35	[2]	$2.44	[2]
Adjusted weighted average common shares outstanding (in shares)	3,037		3,041.60		3,015.50
[1]	Certain prior-period revenue and expense lines and totals were reclassified to conform to the current period’s presentation. See Note 3 to the Consolidated Financial Statements.
[2]	Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.

CONSOLIDATED_STATEMENT_OF_COMP

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income before attribution of noncontrolling interests	$7,498		$13,900		$7,760
Citigroup’s other comprehensive income (loss)
Net change in unrealized gains and losses on investment securities, net of taxes	1,697		-2,237		632
Net change in cash flow hedges, net of taxes	336		1,048		527
Benefit plans liability adjustment, net of taxes	-1,170	[1]	1,281	[1]	-988	[1]
Net change in foreign currency translation adjustment, net of taxes and hedges	-4,946		-2,329		721
Citigroup’s total other comprehensive income (loss)	-4,083		-2,237		892
Other comprehensive income (loss) attributable to noncontrolling interests
Net change in unrealized gains and losses on investment securities, net of taxes	6		-27		32
Net change in foreign currency translation adjustment, net of taxes	-112		10		58
Total other comprehensive income (loss) attributable to noncontrolling interests	-106		-17		90
Total comprehensive income before attribution of noncontrolling interests	3,309		11,646		8,742
Total net income attributable to noncontrolling interests	185		227		219
Citigroup’s comprehensive income	$3,124		$11,419		$8,523
[1]	Reflects adjustments based on the actuarial valuations of the Company’s significant pension and postretirement plans, including changes in the mortality assumptions at December 31, 2014, and amortization of amounts previously recognized in Accumulated other comprehensive income (loss). See Note 8 to the Consolidated Financial Statements.

CONSOLIDATED_BALANCE_SHEET

CONSOLIDATED BALANCE SHEET (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets
Cash and due from banks	$32,108	$29,885
Deposits with banks	128,089	169,005
Federal funds sold and securities borrowed or purchased under agreements to resell (including $144,191 and $144,083 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	242,570	257,037
Brokerage receivables	28,419	25,674
Trading account assets (including $106,217 and $106,695 pledged to creditors at December 31, 2014 and December 31, 2013, respectively)	296,786	285,928
Investments, Excluding Trading [Abstract]
Available for Sale (including $13,808 and $22,258 pledged to creditors as of December 31, 2014 and December 31, 2013, respectively)	300,143	286,511
Held to Maturity (including $2,974 and $4,730 pledged to creditors as of December 31, 2014 and December 31, 2013, respectively)	23,921	10,599
Non-Marketable Equity Securities (including $2,758 and $4,705 at fair value as of December 31, 2014 and December 31, 2013 respectively)	9,379	11,870
Investments	333,443	308,980
Loans:
Loans, net of unearned income	644,635	665,472
Allowance for loan losses	-15,994	-19,648
Total loans, net	628,641	645,824
Goodwill	23,592	25,009
Intangible assets (other than MSRs)	4,566	5,056
Mortgage servicing rights (MSRs)	1,845	2,718
Other assets (including $7,762 and $7,123 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	122,471	125,266
Total assets	1,842,530	1,880,382
Liabilities
Non-interest-bearing deposits in U.S. offices	128,958	128,399
Interest-bearing deposits in U.S. offices (including $994 and $988 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	284,978	284,164
Non-interest-bearing deposits in offices outside the U.S.	70,925	69,406
Interest-bearing deposits in offices outside the U.S. (including $690 and $689 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	414,471	486,304
Total deposits	899,332	968,273
Federal funds purchased and securities loaned or sold under agreements to repurchase (including $36,725 and $54,147 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	173,438	203,512
Brokerage payables	52,180	53,707
Trading account liabilities	139,036	108,762
Short-term borrowings (including $1,496 and $3,692 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	58,335	58,944
Long-term debt	223,080	221,116
Other liabilities (including $1,776 and $2,011 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	85,084	59,935
Total liabilities	1,630,485	1,674,249
Stockholders’ equity
Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: 418,720 as of December 31, 2014 and 269,520 as of December 31, 2013, at aggregate liquidation value	10,468	6,738
Common stock ($0.01 par value; authorized shares: 6 billion), issued shares: 3,082,037,568 as of December 31, 2014 and 3,062,098,976 as of December 31, 2013	31	31
Additional paid-in capital	107,979	107,193
Retained earnings	118,201	111,168
Treasury stock, at cost: December 31, 2014—58,119,993 shares and December 31, 2013—32,856,062 shares	-2,929	-1,658
Accumulated other comprehensive income (loss)	-23,216	-19,133
Total Citigroup stockholders’ equity	210,534	204,339
Noncontrolling interest	1,511	1,794
Total equity	212,045	206,133
Total liabilities and equity	1,842,530	1,880,382
Consumer
Loans:
Loans, net of unearned income	369,970	393,831
Corporate
Loans:
Loans, net of unearned income	274,665	271,641
Consolidated VIEs
Assets
Cash and due from banks	300	362
Trading account assets (including $106,217 and $106,695 pledged to creditors at December 31, 2014 and December 31, 2013, respectively)	671	977
Investments, Excluding Trading [Abstract]
Investments	8,014	10,950
Loans:
Loans, net of unearned income	95,979	95,412
Allowance for loan losses	-2,793	-3,502
Total loans, net	93,186	91,910
Other assets (including $7,762 and $7,123 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	619	1,234
Total assets	102,790	105,433
Liabilities
Short-term borrowings (including $1,496 and $3,692 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	20,254	21,793
Long-term debt	40,078	34,743
Other liabilities (including $1,776 and $2,011 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	901	999
Total liabilities	61,233	57,535
Consolidated VIEs | Consumer
Loans:
Loans, net of unearned income	66,383	63,493
Consolidated VIEs | Corporate
Loans:
Loans, net of unearned income	$29,596	$31,919

CONSOLIDATED_BALANCE_SHEET_Par

CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Federal funds sold and securities borrowed or purchased under agreements to resell, at fair value	$242,570	$257,037
Trading account assets, pledged to creditors	106,217	106,695
Available-for-sale securities, pledged to creditors	13,808	22,258
Held-to-maturity securities, pledged to creditors	2,974	4,730
Non-marketable equity securities, pledged to creditors	2,758	4,705
Loans, net of unearned income	644,635	665,472
Other assets	122,471	125,266
Interest-bearing deposits in U.S. offices	284,978	284,164
Interest-bearing deposits in offices outside the U.S.	414,471	486,304
Federal funds purchased and securities loaned or sold under agreements to repurchase (including $36,725 and $54,147 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	173,438	203,512
Short-term borrowings	58,335	58,944
Long-term debt	223,080	221,116
Other liabilities	85,084	59,935
Preferred stock, par value (in dollars per share)	$1	$1
Preferred stock, authorized shares (in shares)	30,000,000	30,000,000
Preferred stock, issued shares, at aggregate liquidation value (in shares)	418,720	269,520
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, authorized shares (in shares)	6,000,000,000	6,000,000,000
Common stock, issued shares (in shares)	3,082,037,568	3,062,098,976
Treasury stock (in shares)	58,119,993	32,856,062
Consumer
Loans, net of unearned income	369,970	393,831
Corporate
Loans, net of unearned income	274,665	271,641
Fair value
Federal funds sold and securities borrowed or purchased under agreements to resell, at fair value	144,191	144,083
Other assets	7,762	7,123
Interest-bearing deposits in U.S. offices	994	988
Interest-bearing deposits in offices outside the U.S.	690	689
Federal funds purchased and securities loaned or sold under agreements to repurchase (including $36,725 and $54,147 as of December 31, 2014 and December 31, 2013, respectively, at fair value)	36,725	54,147
Short-term borrowings	1,496	3,692
Long-term debt	26,180	26,877
Other liabilities	1,776	2,011
Fair value | Consumer
Loans, net of unearned income	43	957
Fair value | Corporate
Loans, net of unearned income	5,858	4,072
Consolidated VIEs
Loans, net of unearned income	95,979	95,412
Other assets	619	1,234
Short-term borrowings	20,254	21,793
Long-term debt	40,078	34,743
Other liabilities	901	999
Consolidated VIEs | Consumer
Loans, net of unearned income	66,383	63,493
Consolidated VIEs | Corporate
Loans, net of unearned income	29,596	31,919
Consolidated VIEs | Fair value
Long-term debt	0	909
Consolidated VIEs | Fair value | Consumer
Loans, net of unearned income	0	910
Consolidated VIEs | Fair value | Corporate
Loans, net of unearned income	$0	$14

CONSOLIDATED_STATEMENT_OF_CHAN

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)		Total	Citigroup stockholders' equity	Preferred stock at aggregate liquidation value	Citigroup common stockholders' equity	Common stock and additional paid-in capital	Retained earnings	Treasury stock, at cost	Citigroup's accumulated other comprehensive income (loss)	Noncontrolling interests
In Millions, except Share data, unless otherwise specified
Adjusted balance, beginning of year at Dec. 31, 2011							$90,413
Balance, beginning of year at Dec. 31, 2011				312		105,833		-1,071	-17,788	1,767
Balance, beginning of year (in shares) at Dec. 31, 2011				12,000		2,937,756,000		13,878,000
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				2,250
Issuance of new preferred stock (in shares)				90,000
Employee benefit plans						597
Employee benefit plans (in shares)						9,037,000
Issuance of shares and T-DECs for TARP repayment (in shares)		96,338,000
Other						-9	1			-224
Other (in shares)						22,000
Net income attributable to noncontrolling-interest shareholders		7,760					7,541			219
Common dividends	[1]						-120
Preferred dividends		-26					-26
Tax benefit		0					0
Employee benefit plans								229
Employee benefit plans (in shares)								-253,000
Treasury stock acquired	[2]							-5
Treasury stock acquired (in shares)	[2]							-138,000
Other comprehensive income (loss) attributable to noncontrolling-interest shareholders									892	90
Initial origination of a noncontrolling interest										88
Transactions between noncontrolling-interest shareholders and the related consolidated subsidiary										0
Transactions between Citigroup and the noncontrolling-interest shareholders										41
Dividends paid to noncontrolling-interest shareholders										-33
Net change in noncontrolling interests										181
Balance, end of year at Dec. 31, 2012		190,997	189,049	2,562	186,487	106,421	97,809	-847	-16,896	1,948
Balance, end of year (in shares) at Dec. 31, 2012				102,000	3,028,884,000	3,043,153,000		14,269,000
Adjusted balance, beginning of year at Dec. 31, 2012							97,809
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				4,270
Issuance of new preferred stock (in shares)				171,000
Redemption of preferred stock				-94
Redemption of preferred stock (in shares)				-3,000
Employee benefit plans						878
Employee benefit plans (in shares)						18,930,000
Preferred stock issuance expense						-78
Issuance of shares and T-DECs for TARP repayment (in shares)		0
Other						3	0			-187
Other (in shares)						16,000
Net income attributable to noncontrolling-interest shareholders		13,900					13,673			227
Common dividends	[3]						-120
Preferred dividends		-194					-194
Tax benefit		0					0
Employee benefit plans	[1]							26
Employee benefit plans (in shares)								-1,629,000
Treasury stock acquired	[2]							-837
Treasury stock acquired (in shares)	[2]							-16,958,000
Other comprehensive income (loss) attributable to noncontrolling-interest shareholders									-2,237	-17
Initial origination of a noncontrolling interest										6
Transactions between noncontrolling-interest shareholders and the related consolidated subsidiary										-2
Transactions between Citigroup and the noncontrolling-interest shareholders										-118
Dividends paid to noncontrolling-interest shareholders										-63
Net change in noncontrolling interests										-154
Balance, end of year at Dec. 31, 2013		206,133	204,339	6,738	197,601	107,224	111,168	-1,658	-19,133	1,794
Balance, end of year (in shares) at Dec. 31, 2013				270,000	3,029,243,000	3,062,099,000		32,856,000
Adjusted balance, beginning of year at Dec. 31, 2013							111,168
Increase (Decrease) in Stockholders' Equity
Issuance of new preferred stock				3,730
Issuance of new preferred stock (in shares)				149,000
Employee benefit plans						798
Employee benefit plans (in shares)						19,928,000
Preferred stock issuance expense						-31
Issuance of shares and T-DECs for TARP repayment (in shares)		0
Other						19	0			-175
Other (in shares)						11,000
Net income attributable to noncontrolling-interest shareholders		7,498					7,313			185
Common dividends	[3]						-122
Preferred dividends		-511					-511
Tax benefit		353					353
Employee benefit plans	[1]							-39
Employee benefit plans (in shares)								-483,000
Treasury stock acquired	[2]							-1,232
Treasury stock acquired (in shares)	[2]							-24,780,000
Other comprehensive income (loss) attributable to noncontrolling-interest shareholders									-4,083	-106
Initial origination of a noncontrolling interest										0
Transactions between noncontrolling-interest shareholders and the related consolidated subsidiary										0
Transactions between Citigroup and the noncontrolling-interest shareholders										-96
Dividends paid to noncontrolling-interest shareholders										-91
Net change in noncontrolling interests										-283
Balance, end of year at Dec. 31, 2014		$212,045	$210,534	$10,468	$200,066	$108,010	$118,201	($2,929)	($23,216)	$1,511
Balance, end of year (in shares) at Dec. 31, 2014				419,000	3,023,919,000	3,082,038,000		58,119,000
[1]	Includes treasury stock related to (i) certain activity on employee stock option program exercises where the employee delivers existing shares to cover the option exercise, or (ii) under Citi’s employee restricted or deferred stock programs where shares are withheld to satisfy tax requirements.
[2]	For 2014 and 2013, primarily consists of open market purchases under Citi’s Board of Directors-approved common stock repurchase program.
[3]	Common dividends declared were $0.01 per share in the first, second, third and fourth quarters of 2014, 2013 and 2012.

CONSOLIDATED_STATEMENT_OF_CHAN1

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	3 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
Statement of Stockholders' Equity [Abstract]
Common dividends declared (in dollars per share)	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01

CONSOLIDATED_STATEMENT_OF_CASH

CONSOLIDATED STATEMENT OF CASH FLOWS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities of continuing operations
Net income before attribution of noncontrolling interests	$7,498	$13,900	$7,760
Net income attributable to noncontrolling interests	185	227	219
Citigroup’s net income	7,313	13,673	7,541
Loss from discontinued operations, net of taxes	-2	-90	-57
Gain (loss) on sale, net of taxes	0	360	-1
Income from continuing operations-excluding noncontrolling interests	7,315	13,403	7,599
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations
Amortization of deferred policy acquisition costs and present value of future profits	210	194	203
(Additions) reductions to deferred policy acquisition costs	-64	-54	85
Depreciation and amortization	3,589	3,303	2,507
Deferred tax provision (benefit)	3,014	2,380	-4,091
Provision for loan losses	6,828	7,604	10,458
Realized gains from sales of investments	-570	-748	-3,251
Net impairment losses recognized in earnings	426	535	4,971
Change in trading account assets	-10,858	35,001	-29,195
Change in trading account liabilities	30,274	-6,787	-10,533
Change in brokerage receivables net of brokerage payables	-4,272	-6,490	945
Change in loans held-for-sale	-1,144	4,321	-1,106
Change in other assets	709	13,332	-530
Change in other liabilities	4,544	-7,880	-1,457
Other, net	5,433	5,130	13,033
Total adjustments	38,119	49,841	-17,961
Net cash provided by (used in) operating activities of continuing operations	45,434	63,244	-10,362
Cash flows from investing activities of continuing operations
Change in deposits with banks	40,916	-66,871	53,650
Change in federal funds sold and securities borrowed or purchased under agreements to resell	14,467	4,274	14,538
Change in loans	1,170	-30,198	-31,591
Proceeds from sales and securitizations of loans	4,752	9,123	7,287
Purchases of investments	-258,992	-220,823	-256,907
Proceeds from sales of investments	135,824	131,100	143,853
Proceeds from maturities of investments	94,117	84,831	102,020
Capital expenditures on premises and equipment and capitalized software	-3,386	-3,490	-3,604
Proceeds from sales of premises and equipment, subsidiaries and affiliates, and repossessed assets	623	716	1,089
Net cash provided by (used in) investing activities of continuing operations	29,491	-91,338	30,335
Cash flows from financing activities of continuing operations
Dividends paid	-633	-314	-143
Issuance of preferred stock	3,699	4,192	2,250
Redemption of preferred stock	0	-94	0
Treasury stock acquired	-1,232	-837	-5
Stock tendered for payment of withholding taxes	-508	-452	-194
Change in federal funds purchased and securities loaned or sold under agreements to repurchase	-30,074	-7,724	12,863
Issuance of long-term debt	66,836	54,405	27,843
Payments and redemptions of long-term debt	-58,923	-63,994	-117,575
Change in deposits	-48,336	37,713	64,624
Change in short-term borrowings	-1,099	199	-2,164
Net cash provided by (used in) financing activities of continuing operations	-70,270	23,094	-12,501
Effect of exchange rate changes on cash and cash equivalents	-2,432	-1,558	274
Discontinued operations
Net cash used in discontinued operations	0	-10	6
Change in cash and due from banks	2,223	-6,568	7,752
Cash and due from banks at beginning of period	29,885	36,453	28,701
Cash and due from banks at end of period	32,108	29,885	36,453
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the year for income taxes	4,632	4,495	3,900
Cash paid during the year for interest	12,868	14,383	19,739
Non-cash investing activities
Change in loans due to consolidation/deconsolidation of VIEs	-374	6,718	0
Transfers to loans held-for-sale from loans	12,700	17,300	8,700
Transfers to OREO and other repossessed assets	321	325	500
Non-cash financing activities
Decrease in deposits associated with reclassification to HFS	-20,605	0	0
Increase in short-term borrowings due to consolidation of VIEs	500	6,718	0
Decrease in long-term debt due to deconsolidation of VIEs	($864)	$0	$0

SUMMARY_OF_SIGNIFICANT_ACCOUNT

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Throughout these Notes, “Citigroup,” “Citi” and the “Company” refer to Citigroup Inc. and its consolidated subsidiaries.
	Certain reclassifications have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation.
	Principles of Consolidation
	The Consolidated Financial Statements include the accounts of Citigroup and its subsidiaries prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP). The Company consolidates subsidiaries in which it holds, directly or indirectly, more than 50% of the voting rights or where it exercises control. Entities where the Company holds 20% to 50% of the voting rights and/or has the ability to exercise significant influence, other than investments of designated venture capital subsidiaries or investments accounted for at fair value under the fair value option, are accounted for under the equity method, and the pro rata share of their income (loss) is included in Other revenue. Income from investments in less than 20% owned companies is recognized when dividends are received. As discussed in more detail in Note 22 to the Consolidated Financial Statements, Citigroup also consolidates entities deemed to be variable interest entities when Citigroup is determined to be the primary beneficiary. Gains and losses on the disposition of branches, subsidiaries, affiliates, buildings, and other investments are included in Other revenue.
	Citibank, N.A.
	Citibank, N.A. is a commercial bank and wholly owned subsidiary of Citigroup Inc. Citibank’s principal offerings include: consumer finance, mortgage lending and retail banking products and services; investment banking, commercial banking, cash management and trade finance; and private banking products and services.
	Variable Interest Entities
	An entity is referred to as a variable interest entity (VIE) if it meets the criteria outlined in Accounting Standards Codification (ASC) Topic 810, Consolidation, which are: (i) the entity has equity that is insufficient to permit the entity to finance its activities without additional subordinated financial support from other parties; or (ii) the entity has equity investors that cannot make significant decisions about the entity’s operations or that do not absorb their proportionate share of the entity’s expected losses or expected returns.
	The Company consolidates a VIE when it has both the power to direct the activities that most significantly impact the VIE’s economic performance and a right to receive benefits or the obligation to absorb losses of the entity that could be potentially significant to the VIE (that is, Citi is the primary beneficiary).
	In addition to variable interests held in consolidated VIEs, the Company has variable interests in other VIEs that are not consolidated because the Company is not the primary beneficiary. These include multi-seller finance companies, certain collateralized debt obligations (CDOs), many structured finance transactions and various investment funds. However, these VIEs and all other unconsolidated VIEs are monitored by the Company to assess whether any events have occurred to cause its primary beneficiary status to change. These events include:
	•	purchases or sales of variable interests by Citigroup or an unrelated third party, which cause Citigroup’s overall variable interest ownership to change;
	•	changes in contractual arrangements that reallocate expected losses and residual returns among the variable interest holders;
	•	changes in the party that has power to direct the activities of a VIE that most significantly impact the entity’s economic performance; and
	•	providing financial support to an entity that results in an implicit variable interest.
	All other entities not deemed to be VIEs with which the Company has involvement are evaluated for consolidation under other subtopics of ASC 810.
	Foreign Currency Translation
	Assets and liabilities of Citi’s foreign operations are translated from their respective functional currencies into U.S. dollars using period-end spot foreign-exchange rates. The effects of those translation adjustments are reported in Accumulated other comprehensive income (loss), a component of stockholders’ equity, along with any related hedge and tax effects, until realized upon sale or substantial liquidation of the foreign operation. Revenues and expenses of Citi’s foreign operations are translated monthly from their respective functional currencies into U.S. dollars at amounts that approximate weighted average exchange rates.
	For transactions whose terms are denominated in a currency other than the functional currency, including transactions denominated in the local currencies of foreign operations with the U.S. dollar as their functional currency, the effects of changes in exchange rates are primarily included in Principal transactions, along with the related effects of any economic hedges. Instruments used to hedge foreign currency exposures include foreign currency forward, option and swap contracts and in certain instances, designated issues of non-U.S. dollar debt. Foreign operations in countries with highly inflationary economies designate the U.S. dollar as their functional currency, with the effects of changes in exchange rates primarily included in Other revenue.
	Investment Securities
	Investments include fixed income and equity securities. Fixed income instruments include bonds, notes and redeemable preferred stocks, as well as certain loan-backed and structured securities that are subject to prepayment risk. Equity securities include common and nonredeemable preferred stock.
	Investment securities are classified and accounted for as follows:
	•	Fixed income securities classified as “held-to-maturity” are securities that the Company has both the ability and the intent to hold until maturity and are carried at amortized cost. Interest income on such securities is included in Interest revenue.
	•	Fixed income securities and marketable equity securities classified as “available-for-sale” are carried at fair value with changes in fair value reported in Accumulated other comprehensive income (loss), a component of Stockholders’ equity, net of applicable income taxes and hedges. Realized gains and losses on sales are included in income primarily on a specific identification cost basis. Interest and dividend income on such securities is included in Interest revenue.
	•	Certain investments in non-marketable equity securities and certain investments that would otherwise have been accounted for using the equity method are carried at fair value, since the Company has elected to apply fair value accounting. Changes in fair value of such investments are recorded in earnings.
	•	Certain non-marketable equity securities are carried at cost and are periodically assessed for other-than-temporary impairment, as described in Note 14 to the Consolidated Financial Statements.
	For investments in fixed income securities classified as held-to-maturity or available-for-sale, the accrual of interest income is suspended for investments that are in default or for which it is likely that future interest payments will not be made as scheduled.
	Investment securities are subject to evaluation for other-than-temporary impairment as described in Note 14 to the Consolidated Financial Statements.
	The Company uses a number of valuation techniques for investments carried at fair value, which are described in Note 25 to the Consolidated Financial Statements. Realized gains and losses on sales of investments are included in earnings.
	Trading Account Assets and Liabilities
	Trading account assets include debt and marketable equity securities, derivatives in a receivable position, residual interests in securitizations and physical commodities inventory. In addition, as described in Note 26 to the Consolidated Financial Statements, certain assets that Citigroup has elected to carry at fair value under the fair value option, such as loans and purchased guarantees, are also included in Trading account assets.
	Trading account liabilities include securities sold, not yet purchased (short positions) and derivatives in a net payable position, as well as certain liabilities that Citigroup has elected to carry at fair value (as described in Note 26 to the Consolidated Financial Statements).
	Other than physical commodities inventory, all trading account assets and liabilities are carried at fair value. Revenues generated from trading assets and trading liabilities are generally reported in Principal transactions and include realized gains and losses as well as unrealized gains and losses resulting from changes in the fair value of such instruments. Interest income on trading assets is recorded in Interest revenue reduced by interest expense on trading liabilities.
	Physical commodities inventory is carried at the lower of cost or market with related losses reported in Principal transactions. Realized gains and losses on sales of commodities inventory are included in Principal transactions. Investments in unallocated precious metals accounts (gold, silver, platinum and palladium) are accounted for as hybrid instruments containing a debt host contract and an embedded non-financial derivative instrument indexed to the price of the relevant precious metal. The embedded derivative instrument is separated from the debt host contract and accounted for at fair value. The debt host contract is accounted for at fair value under the fair value option, as described in Note 26 to the Consolidated Financial Statements.
	Derivatives used for trading purposes include interest rate, currency, equity, credit, and commodity swap agreements, options, caps and floors, warrants, and financial and commodity futures and forward contracts. Derivative asset and liability positions are presented net by counterparty on the Consolidated Balance Sheet when a valid master netting agreement exists and the other conditions set out in ASC 210-20, Balance Sheet—Offsetting, are met. See Note 23 to the Consolidated Financial Statements.
	The Company uses a number of techniques to determine the fair value of trading assets and liabilities, which are described in Note 25 to the Consolidated Financial Statements.
	Securities Borrowed and Securities Loaned
	Securities borrowing and lending transactions generally do not constitute a sale of the underlying securities for accounting purposes and are treated as collateralized financing transactions. Such transactions are recorded at the amount of proceeds advanced or received plus accrued interest. As described in Note 26 to the Consolidated Financial Statements, the Company has elected to apply fair value accounting to a number of securities borrowing and lending transactions. Fees paid or received for all securities lending and borrowing transactions are recorded in Interest expense or Interest revenue at the contractually specified rate.
	The Company monitors the fair value of securities borrowed or loaned on a daily basis and obtains or posts additional collateral in order to maintain contractual margin protection.
	As described in Note 25 to the Consolidated Financial Statements, the Company uses a discounted cash flow technique to determine the fair value of securities lending and borrowing transactions.
	Repurchase and Resale Agreements
	Securities sold under agreements to repurchase (repos) and securities purchased under agreements to resell (reverse repos) generally do not constitute a sale of the underlying securities for accounting purposes and are treated as collateralized financing transactions. As described in Note 26 to the Consolidated Financial Statements, the Company has elected to apply fair value accounting to the majority of such transactions, with changes in fair value reported in earnings. Any transactions for which fair value accounting has not been elected are recorded at the amount of cash advanced or received plus accrued interest. Irrespective of whether the Company has elected fair value accounting, interest paid or received on all repo and reverse repo transactions is recorded in Interest expense or Interest revenue at the contractually specified rate.
	Where the conditions of ASC 210-20-45-11, Balance Sheet-Offsetting: Repurchase and Reverse Repurchase Agreements, are met, repos and reverse repos are presented net on the Consolidated Balance Sheet.
	The Company’s policy is to take possession of securities purchased under reverse repurchase agreements. The Company monitors the fair value of securities subject to repurchase or resale on a daily basis and obtains or posts additional collateral in order to maintain contractual margin protection.
	As described in Note 25 to the Consolidated Financial Statements, the Company uses a discounted cash flow technique to determine the fair value of repo and reverse repo transactions.
	Loans
	Loans are reported at their outstanding principal balances net of any unearned income and unamortized deferred fees and costs except that credit card receivable balances also include accrued interest and fees. Loan origination fees and certain direct origination costs are generally deferred and recognized as adjustments to income over the lives of the related loans.
	As described in Note 26 to the Consolidated Financial Statements, Citi has elected fair value accounting for certain loans. Such loans are carried at fair value with changes in fair value reported in earnings. Interest income on such loans is recorded in Interest revenue at the contractually specified rate.
	Loans for which the fair value option has not been elected are classified upon origination or acquisition as either held-for-investment or held-for-sale. This classification is based on management’s initial intent and ability with regard to those loans.
	Loans that are held-for-investment are classified as Loans, net of unearned income on the Consolidated Balance Sheet, and the related cash flows are included within the cash flows from investing activities category in the Consolidated Statement of Cash Flows on the line Change in loans. However, when the initial intent for holding a loan has changed from held-for-investment to held-for-sale, the loan is reclassified to held-for-sale, but the related cash flows continue to be reported in cash flows from investing activities in the Consolidated Statement of Cash Flows on the line Proceeds from sales and securitizations of loans.
	Consumer loans
	Consumer loans represent loans and leases managed primarily by the Global Consumer Banking businesses and Citi Holdings.
	Consumer non-accrual and re-aging policies
	As a general rule, interest accrual ceases for installment and real estate (both open- and closed-end) loans when payments are 90 days contractually past due. For credit cards and other unsecured revolving loans, however, Citi generally accrues interest until payments are 180 days past due. As a result of OCC guidance, home equity loans in regulated bank entities are classified as non-accrual if the related residential first mortgage is 90 days or more past due. Also as a result of OCC guidance, mortgage loans in regulated bank entities discharged through Chapter 7 bankruptcy, other than FHA-insured loans, are classified as non-accrual. Commercial market loans are placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due.
	Loans that have been modified to grant a concession to a borrower in financial difficulty may not be accruing interest at the time of the modification. The policy for returning such modified loans to accrual status varies by product and/or region. In most cases, a minimum number of payments (ranging from one to six) is required, while in other cases the loan is never returned to accrual status. For regulated bank entities, such modified loans are returned to accrual status if a credit evaluation at the time of, or subsequent to, the modification indicates the borrower is able to meet the restructured terms, and the borrower is current and has demonstrated a reasonable period of sustained payment performance (minimum six months of consecutive payments).
	For U.S. consumer loans, generally one of the conditions to qualify for modification is that a minimum number of payments (typically ranging from one to three) must be made. Upon modification, the loan is re-aged to current status. However, re-aging practices for certain open-ended consumer loans, such as credit cards, are governed by Federal Financial Institutions Examination Council (FFIEC) guidelines. For open-ended consumer loans subject to FFIEC guidelines, one of the conditions for the loan to be re-aged to current status is that at least three consecutive minimum monthly payments, or the equivalent amount, must be received. In addition, under FFIEC guidelines, the number of times that such a loan can be re-aged is subject to limitations (generally once in 12 months and twice in five years). Furthermore, Federal Housing Administration (FHA) and Department of Veterans Affairs (VA) loans may only be modified under those respective agencies’ guidelines and payments are not always required in order to re-age a modified loan to current.
	Consumer charge-off policies
	Citi’s charge-off policies follow the general guidelines below:
	•	Unsecured installment loans are charged off at 120 days contractually past due.
	•	Unsecured revolving loans and credit card loans are charged off at 180 days contractually past due.
	•	Loans secured with non-real estate collateral are written down to the estimated value of the collateral, less costs to sell, at 120 days contractually past due.
	•	Real estate-secured loans are written down to the estimated value of the property, less costs to sell, at 180 days contractually past due.
	•	Real estate-secured loans are charged off no later than 180 days contractually past due if a decision has been made not to foreclose on the loans.
	•	Non-bank real estate-secured loans are charged off at the earlier of 180 days contractually past due, if there have been no payments within the last six months, or 360 days contractually past due, if a decision has been made not to foreclose on the loans.
•	Non-bank loans secured by real estate are written down to the estimated value of the property, less costs to sell, at the earlier of the receipt of title, the initiation of foreclosure (a process that must commence when payments are 120 days contractually past due), when the loan is 180 days contractually past due if there have been no payments within the past six months or 360 days contractually past due.
•	Non-bank unsecured personal loans are charged off at the earlier of 180 days contractually past due if there have been no payments within the last six months, or 360 days contractually past due.
•	Unsecured loans in bankruptcy are charged off within 60 days of notification of filing by the bankruptcy court or in accordance with Citi’s charge-off policy, whichever occurs earlier.
•	Consistent with OCC guidance, real estate-secured loans that were discharged through Chapter 7 bankruptcy, other than FHA-insured loans, are written down to the estimated value of the property, less costs to sell. Other real estate-secured loans in bankruptcy are written down to the estimated value of the property, less costs to sell, at the later of 60 days after notification or 60 days contractually past due.
•	Non-bank loans secured by real estate that are discharged through Chapter 7 bankruptcy are written down to the estimated value of the property, less costs to sell, at 60 days contractually past due.
•	Non-bank unsecured personal loans in bankruptcy are charged off when they are 30 days contractually past due.
•	Commercial market loans are written down to the extent that principal is judged to be uncollectable.
Corporate loans
Corporate loans represent loans and leases managed by ICG or, to a much lesser extent, Citi Holdings. Corporate loans are identified as impaired and placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due, except when the loan is well collateralized and in the process of collection. Any interest accrued on impaired corporate loans and leases is reversed at 90 days and charged against current earnings, and interest is thereafter included in earnings only to the extent actually received in cash. When there is doubt regarding the ultimate collectability of principal, all cash receipts are thereafter applied to reduce the recorded investment in the loan.
Impaired corporate loans and leases are written down to the extent that principal is deemed to be uncollectable. Impaired collateral-dependent loans and leases, where repayment is expected to be provided solely by the sale of the underlying collateral and there are no other available and reliable sources of repayment, are written down to the lower of cost or collateral value. Cash-basis loans are returned to accrual status when all contractual principal and interest amounts are reasonably assured of repayment and there is a sustained period of repayment performance in accordance with the contractual terms.
Loans Held-for-Sale
Corporate and consumer loans that have been identified for sale are classified as loans held-for-sale and included in Other assets. The practice of Citi’s U.S. prime mortgage business has been to sell substantially all of its conforming loans. As such, U.S. prime mortgage conforming loans are classified as held-for-sale and the fair value option is elected at origination, with changes in fair value recorded in Other revenue. With the exception of those loans for which the fair value option has been elected, held-for-sale loans are accounted for at the lower of cost or market value, with any write-downs or subsequent recoveries charged to Other revenue. The related cash flows are classified in the Consolidated Statement of Cash Flows in the cash flows from operating activities category on the line Change in loans held-for-sale.
Allowance for Loan Losses
Allowance for loan losses represents management’s best estimate of probable losses inherent in the portfolio, including probable losses related to large individually evaluated impaired loans and troubled debt restructurings. Attribution of the allowance is made for analytical purposes only, and the entire allowance is available to absorb probable loan losses inherent in the overall portfolio. Additions to the allowance are made through the Provision for loan losses. Loan losses are deducted from the allowance and subsequent recoveries are added. Assets received in exchange for loan claims in a restructuring are initially recorded at fair value, with any gain or loss reflected as a recovery or charge-off to the provision.
Consumer loans
For consumer loans, each portfolio of non-modified smaller-balance, homogeneous loans is independently evaluated by product type (e.g., residential mortgage, credit card, etc.) for impairment in accordance with ASC 450-20. The allowance for loan losses attributed to these loans is established via a process that estimates the probable losses inherent in the specific portfolio. This process includes migration analysis, in which historical delinquency and credit loss experience is applied to the current aging of the portfolio, together with analyses that reflect current and anticipated economic conditions, including changes in housing prices and unemployment trends. Citi’s allowance for loan losses under ASC 450 only considers contractual principal amounts due, except for credit card loans where estimated loss amounts related to accrued interest receivable are also included.
Management also considers overall portfolio indicators, including historical credit losses, delinquent, non-performing and classified loans, trends in volumes and terms of loans, an evaluation of overall credit quality, the credit process, including lending policies and procedures, and economic, geographical, product and other environmental factors.
Separate valuation allowances are determined for impaired smaller-balance homogeneous loans whose terms have been modified in a troubled debt restructuring (TDR). Long-term modification programs, as well as short-term (less than 12 months) modifications originated beginning January 1, 2011 that provide concessions (such as interest rate reductions) to borrowers in financial difficulty, are reported as TDRs. In addition, loan modifications that involve a trial period are reported as TDRs at the start of the trial period. The allowance for loan losses for TDRs is determined in accordance with ASC 310-10-35 considering all available evidence, including, as appropriate, the present value of the expected future cash flows discounted at the loan’s original contractual effective rate, the secondary market value of the loan and the fair value of collateral less disposal costs. These expected cash flows incorporate modification program default rate assumptions. The original contractual effective rate for credit card loans is the pre-modification rate, which may include interest rate increases under the original contractual agreement with the borrower.
Valuation allowances for commercial market loans, which are classifiably managed Consumer loans, are determined in the same manner as for Corporate loans and are described in more detail in the following section. Generally, an asset-specific component is calculated under ASC 310-10-35 on an individual basis for larger-balance, non-homogeneous loans that are considered impaired and the allowance for the remainder of the classifiably managed Consumer loan portfolio is calculated under ASC 450 using a statistical methodology that may be supplemented by management adjustment.
Corporate loans
In the corporate portfolios, the Allowance for loan losses includes an asset-specific component and a statistically based component. The asset-specific component is calculated under ASC 310-10-35, Receivables—Subsequent Measurement (formerly SFAS 114) on an individual basis for larger-balance, non-homogeneous loans, which are considered impaired. An asset-specific allowance is established when the discounted cash flows, collateral value (less disposal costs) or observable market price of the impaired loan are lower than its carrying value. This allowance considers the borrower’s overall financial condition, resources, and payment record, the prospects for support from any financially responsible guarantors (discussed further below) and, if appropriate, the realizable value of any collateral. The asset-specific component of the allowance for smaller balance impaired loans is calculated on a pool basis considering historical loss experience.
The allowance for the remainder of the loan portfolio is determined under ASC 450, Contingencies (formerly SFAS 5) using a statistical methodology, supplemented by management judgment. The statistical analysis considers the portfolio’s size, remaining tenor and credit quality as measured by internal risk ratings assigned to individual credit facilities, which reflect probability of default and loss given default. The statistical analysis considers historical default rates and historical loss severity in the event of default, including historical average levels and historical variability. The result is an estimated range for inherent losses. The best estimate within the range is then determined by management’s quantitative and qualitative assessment of current conditions, including general economic conditions, specific industry and geographic trends, and internal factors including portfolio concentrations, trends in internal credit quality indicators, and current and past underwriting standards.
For both the asset-specific and the statistically based components of the Allowance for loan losses, management may incorporate guarantor support. The financial wherewithal of the guarantor is evaluated, as applicable, based on net worth, cash flow statements and personal or company financial statements which are updated and reviewed at least annually. Citi seeks performance on guarantee arrangements in the normal course of business. Seeking performance entails obtaining satisfactory cooperation from the guarantor or borrower in the specific situation. This regular cooperation is indicative of pursuit and successful enforcement of the guarantee; the exposure is reduced without the expense and burden of pursuing a legal remedy. A guarantor’s reputation and willingness to work with Citigroup is evaluated based on the historical experience with the guarantor and the knowledge of the marketplace. In the rare event that the guarantor is unwilling or unable to perform or facilitate borrower cooperation, Citi pursues a legal remedy; however, enforcing a guarantee via legal action against the guarantor is not the primary means of resolving a troubled loan situation and rarely occurs. If Citi does not pursue a legal remedy, it is because Citi does not believe that the guarantor has the financial wherewithal to perform regardless of legal action or because there are legal limitations on simultaneously pursuing guarantors and foreclosure. A guarantor’s reputation does not impact Citi’s decision or ability to seek performance under the guarantee.
In cases where a guarantee is a factor in the assessment of loan losses, it is included via adjustment to the loan’s internal risk rating, which in turn is the basis for the adjustment to the statistically based component of the Allowance for loan losses. To date, it is only in rare circumstances that an impaired commercial loan or commercial real estate loan is carried at a value in excess of the appraised value due to a guarantee.
When Citi’s monitoring of the loan indicates that the guarantor’s wherewithal to pay is uncertain or has deteriorated, there is either no change in the risk rating, because the guarantor’s credit support was never initially factored in, or the risk rating is adjusted to reflect that uncertainty or deterioration. Accordingly, a guarantor’s ultimate failure to perform or a lack of legal enforcement of the guarantee does not materially impact the allowance for loan losses, as there is typically no further significant adjustment of the loan’s risk rating at that time. Where Citi is not seeking performance under the guarantee contract, it provides for loan losses as if the loans were non-performing and not guaranteed.
Reserve Estimates and Policies
Management provides reserves for an estimate of probable losses inherent in the funded loan portfolio on the Consolidated Balance Sheet in the form of an allowance for loan losses. These reserves are established in accordance with Citigroup’s credit reserve policies, as approved by the Audit Committee of the Board of Directors. Citi’s Chief Risk Officer and Chief Financial Officer review the adequacy of the credit loss reserves each quarter with representatives from the risk management and finance staffs for each applicable business area. Applicable business areas include those having classifiably managed portfolios, where internal credit-risk ratings are assigned (primarily Institutional Clients Group and Global Consumer Banking) or modified Consumer loans, where concessions were granted due to the borrowers’ financial difficulties.
The above-mentioned representatives for these business areas present recommended reserve balances for their funded and unfunded lending portfolios along with supporting quantitative and qualitative data discussed below:
Estimated probable losses for non-performing, non-homogeneous exposures within a business line’s classifiably managed portfolio and impaired smaller-balance homogeneous loans whose terms have been modified due to the borrowers’ financial difficulties, where it was determined that a concession was granted to the borrower. Consideration may be given to the following, as appropriate, when determining this estimate: (i) the present value of expected future cash flows discounted at the loan’s original effective rate; (ii) the borrower’s overall financial condition, resources and payment record; and (iii) the prospects for support from financially responsible guarantors or the realizable value of any collateral. In the determination of the allowance for loan losses for TDRs, management considers a combination of historical re-default rates, the current economic environment and the nature of the modification program when forecasting expected cash flows. When impairment is measured based on the present value of expected future cash flows, the entire change in present value is recorded in the Provision for loan losses.
Statistically calculated losses inherent in the classifiably managed portfolio for performing and de minimis non-performing exposures. The calculation is based on: (i) Citi’s internal system of credit-risk ratings, which are analogous to the risk ratings of the major rating agencies; and (ii) historical default and loss data, including rating agency information regarding default rates from 1983 to 2013 and internal data dating to the early 1970s on severity of losses in the event of default. Adjustments may be made to this data. Such adjustments include: (i) statistically calculated estimates to cover the historical fluctuation of the default rates over the credit cycle, the historical variability of loss severity among defaulted loans, and the degree to which there are large obligor concentrations in the global portfolio; and (ii) adjustments made for specific known items, such as current environmental factors and credit trends.
In addition, representatives from each of the risk management and finance staffs that cover business areas with delinquency-managed portfolios containing smaller-balance homogeneous loans present their recommended reserve balances based on leading credit indicators, including loan delinquencies and changes in portfolio size as well as economic trends, including current and future housing prices, unemployment, length of time in foreclosure, costs to sell and GDP. This methodology is applied separately for each individual product within each geographic region in which these portfolios exist.
This evaluation process is subject to numerous estimates and judgments. The frequency of default, risk ratings, loss recovery rates, the size and diversity of individual large credits, and the ability of borrowers with foreign currency obligations to obtain the foreign currency necessary for orderly debt servicing, among other things, are all taken into account during this review. Changes in these estimates could have a direct impact on the credit costs in any period and could result in a change in the allowance.
Allowance for Unfunded Lending Commitments
A similar approach to the allowance for loan losses is used for calculating a reserve for the expected losses related to unfunded loan commitments and standby letters of credit. This reserve is classified on the balance sheet in Other liabilities. Changes to the allowance for unfunded lending commitments are recorded in the Provision for unfunded lending commitments.
Mortgage Servicing Rights
Mortgage servicing rights (MSRs) are recognized as intangible assets when purchased or when the Company sells or securitizes loans acquired through purchase or origination and retains the right to service the loans. Mortgage servicing rights are accounted for at fair value, with changes in value recorded in Other revenue in the Company’s Consolidated Statement of Income.
Additional information on the Company’s MSRs can be found in Note 22 to the Consolidated Financial Statements.
Citigroup Residential Mortgages—Representations and Warranties
In connection with Citi’s sales of residential mortgage loans to the U.S. government-sponsored entities (GSEs) and private investors, as well as through private-label securitizations, Citi typically makes representations and warranties that the loans sold meet certain requirements, such as the loan’s compliance with any applicable loan criteria established by the buyer and the validity of the lien securing the loan. The specific representations and warranties made by Citi in any particular transaction depend on, among other things, the nature of the transaction and the requirements of the investor.
These sales expose Citi to potential claims for alleged breaches of its representations and warranties. In the event of a breach of its representations and warranties, Citi could be required either to repurchase the mortgage loans with the identified defects (generally at unpaid principal balance plus accrued interest) or to indemnify (make-whole) the investors for their losses on these loans.
Citi has recorded a repurchase reserve for its potential repurchase or make-whole liability regarding residential mortgage representation and warranty claims. Since the first quarter of 2013, Citi has considered private-label residential mortgage securitization representation and warranty claims as part of its litigation accrual analysis and not as part of its repurchase reserve. See Note 28 to the Consolidated Financial Statements for additional information on Citi’s potential private-label residential mortgage securitization exposure. Accordingly, Citi’s repurchase reserve has been recorded for purposes of its potential representation and warranty repurchase liability resulting from its whole loan sales to the GSEs and, to a lesser extent private investors, which are made through Citi’s Consumer business in CitiMortgage.
In the case of a repurchase, Citi will bear any subsequent credit loss on the mortgage loan and the loan is typically considered a credit-impaired loan and accounted for under AICPA Statement of Position (SOP) 03-3, “Accounting of Certain Loans and Debt Securities Acquired in a Transfer” (now incorporated into ASC 310-30, Receivables-Loans and Debt Securities Acquired with Deteriorated Credit Quality) (SOP 03-3).
In the case of a repurchase of a credit-impaired SOP 03-3 loan, the difference between the loan’s fair value and unpaid principal balance at the time of the repurchase is recorded as a utilization of the repurchase reserve. Make-whole payments to the investor are also treated as utilizations and charged directly against the reserve. The repurchase reserve is estimated when Citi sells loans (recorded as an adjustment to the gain on sale, which is included in Other revenue in the Consolidated Statement of Income) and is updated quarterly. Any change in estimate is recorded in Other revenue.
Goodwill
Goodwill represents the excess of acquisition cost over the fair value of net tangible and intangible assets acquired. Goodwill is subject to annual impairment testing and between annual tests if an event occurs or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying amount.
Under ASC 350, Intangibles—Goodwill and Other, the Company has an option to assess qualitative factors to determine if it is necessary to perform the goodwill impairment test. If, after assessing the totality of events or circumstances, the Company determines that it is not more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, no further testing is necessary. If, however, the Company determines that it is more-likely-than not that the fair value of a reporting unit is less than its carrying amount, then the Company must perform the first step of the two-step goodwill impairment test.
The Company has an unconditional option to bypass the qualitative assessment for any reporting unit in any reporting period and proceed directly to the first step of the goodwill impairment test. Furthermore, on any business dispositions, goodwill is allocated to the business disposed of based on the ratio of the fair value of the business disposed of to the fair value of the reporting unit.
The first step requires a comparison of the fair value of the individual reporting unit to its carrying value, including goodwill. If the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not to be impaired and no further analysis is necessary. If the carrying value of the reporting unit exceeds the fair value, this is an indication of potential impairment and a second step of testing is performed to measure the amount of impairment, if any, for that reporting unit.
If required, the second step involves calculating the implied fair value of goodwill for each of the affected reporting units. The implied fair value of goodwill is determined in the same manner as the amount of goodwill recognized in a business combination, which is the excess of the fair value of the reporting unit determined in step one over the fair value of the net assets and identifiable intangibles as if the reporting unit were being acquired. If the amount of the goodwill allocated to the reporting unit exceeds the implied fair value of the goodwill in the pro forma purchase price allocation, an impairment charge is recorded for the excess. A recognized impairment charge cannot exceed the amount of goodwill allocated to a reporting unit and cannot subsequently be reversed even if the fair value of the reporting unit recovers.
Additional information on Citi’s goodwill impairment testing can be found in Note 17 to the Consolidated Financial Statements.
Intangible Assets
Intangible assets, including core deposit intangibles, present value of future profits, purchased credit card relationships, other customer relationships, and other intangible assets, but excluding MSRs, are amortized over their estimated useful lives. Intangible assets deemed to have indefinite useful lives, primarily certain asset management contracts and trade names, are not amortized and are subject to annual impairment tests. An impairment exists if the carrying value of the indefinite-lived intangible asset exceeds its fair value. For other intangible assets subject to amortization, an impairment is recognized if the carrying amount is not recoverable and exceeds the fair value of the intangible asset.
Similar to the goodwill impairment analysis, in performing the annual impairment analysis for indefinite-lived intangible assets, Citi may and has elected to bypass the optional qualitative assessment, choosing instead to perform a quantitative analysis.
Other Assets and Other Liabilities
Other assets include, among other items, loans held-for-sale, deferred tax assets, equity method investments, interest and fees receivable, premises and equipment (including purchased and developed software), repossessed assets, and other receivables. Other liabilities include, among other items, accrued expenses and other payables, deferred tax liabilities, and reserves for legal claims, taxes, unfunded lending commitments, repositioning reserves, and other matters.
Other Real Estate Owned and Repossessed Assets
Real estate or other assets received through foreclosure or repossession are generally reported in Other assets, net of a valuation allowance for selling costs and subsequent declines in fair value.
Securitizations
The Company primarily securitizes credit card receivables and mortgages. Other types of securitized assets include corporate debt instruments (in cash and synthetic form).
There are two key accounting determinations that must be made relating to securitizations. Citi first makes a determination as to whether the securitization entity must be consolidated. Second, it determines whether the transfer of financial assets to the entity is considered a sale under GAAP. If the securitization entity is a VIE, the Company consolidates the VIE if it is the primary beneficiary (as discussed in “Variable Interest Entities” above). For all other securitization entities determined not to be VIEs in which Citigroup participates, consolidation is based on which party has voting control of the entity, giving consideration to removal and liquidation rights in certain partnership structures. Only securitization entities controlled by Citigroup are consolidated.
Interests in the securitized and sold assets may be retained in the form of subordinated or senior interest-only strips, subordinated tranches, spread accounts and servicing rights. In credit card securitizations, the Company retains a seller’s interest in the credit card receivables transferred to the trusts, which is not in securitized form. In the case of consolidated securitization entities, including the credit card trusts, these retained interests are not reported on Citi’s Consolidated Balance Sheet. The securitized loans remain on
the balance sheet. Substantially all of the Consumer loans sold or securitized through non-consolidated trusts by Citigroup are U.S. prime residential mortgage loans. Retained interests in non-consolidated mortgage securitization trusts are classified as Trading account assets, except for MSRs, which are included in Mortgage servicing rights on Citigroup’s Consolidated Balance Sheet.
Debt
Short-term borrowings and Long-term debt are accounted for at amortized cost, except where the Company has elected to report the debt instruments, including certain structured notes at fair value, or the debt is in a fair value hedging relationship.
Transfers of Financial Assets
For a transfer of financial assets to be considered a sale: (i) the assets must have been legally isolated from the Company, even in bankruptcy or other receivership; (ii) the purchaser must have the right to pledge or sell the assets transferred or, if the purchaser is an entity whose sole purpose is to engage in securitization and asset-backed financing activities through the issuance of beneficial interests and that entity is constrained from pledging the assets it receives, each beneficial interest holder must have the right to sell or pledge their beneficial interests; and (iii) the Company may not have an option or obligation to reacquire the assets.
If these sale requirements are met, the assets are removed from the Company’s Consolidated Balance Sheet. If the conditions for sale are not met, the transfer is considered to be a secured borrowing, the assets remain on the Consolidated Balance Sheet and the sale proceeds are recognized as the Company’s liability. A legal opinion on a sale generally is obtained for complex transactions or where the Company has continuing involvement with assets transferred or with the securitization entity. For a transfer to be eligible for sale accounting, those opinions must state that the asset transfer would be considered a sale and that the assets transferred would not be consolidated with the Company’s other assets in the event of the Company’s insolvency.
For a transfer of a portion of a financial asset to be considered a sale, the portion transferred must meet the definition of a participating interest. A participating interest must represent a pro rata ownership in an entire financial asset; all cash flows must be divided proportionately, with the same priority of payment; no participating interest in the transferred asset may be subordinated to the interest of another participating interest holder; and no party may have the right to pledge or exchange the entire financial asset unless all participating interest holders agree. Otherwise, the transfer is accounted for as a secured borrowing.
See Note 22 to the Consolidated Financial Statements for further discussion.
Risk Management Activities—Derivatives Used for Hedging Purposes
The Company manages its exposures to market rate movements outside its trading activities by modifying the asset and liability mix, either directly or through the use of derivative financial products, including interest-rate swaps, futures, forwards, and purchased options, as well as foreign-exchange contracts. These end-user derivatives are carried at fair value in Other assets, Other liabilities, Trading account assets and Trading account liabilities.
To qualify as an accounting hedge under the hedge accounting rules (versus an economic hedge where hedge accounting is not sought), a derivative must be highly effective in offsetting the risk designated as being hedged. The hedge relationship must be formally documented at inception, detailing the particular risk management objective and strategy for the hedge. This includes the item and risk being hedged, the derivative being used and how effectiveness will be assessed and ineffectiveness measured. The effectiveness of these hedging relationships is evaluated both on a retrospective and prospective basis, typically using quantitative measures of correlation with hedge ineffectiveness measured and recorded in current earnings.
If a hedge relationship is not highly effective, it no longer qualifies as an accounting hedge and hedge accounting may not be applied. Any gains or losses attributable to the derivatives, as well as subsequent changes in fair value, are recognized in Other revenue or Principal transactions with no offset to the hedged item, similar to trading derivatives.
The foregoing criteria are applied on a decentralized basis, consistent with the level at which market risk is managed, but are subject to various limits and controls. The underlying asset, liability or forecasted transaction may be an individual item or a portfolio of similar items.
For fair value hedges, in which derivatives hedge the fair value of assets or liabilities, changes in the fair value of derivatives are reflected in Other revenue, together with changes in the fair value of the hedged item related to the hedged risk. These amounts are expected to, and generally do, offset each other. Any net amount, representing hedge ineffectiveness, is reflected in current earnings. Citigroup’s fair value hedges are primarily hedges of fixed-rate long-term debt and available-for-sale securities.
For cash flow hedges, in which derivatives hedge the variability of cash flows related to floating- and fixed-rate assets, liabilities or forecasted transactions, the accounting treatment depends on the effectiveness of the hedge. To the extent these derivatives are effective in offsetting the variability of the hedged cash flows, the effective portion of the changes in the derivatives’ fair values will not be included in current earnings, but is reported in Accumulated other comprehensive income (loss). These changes in fair value will be included in earnings of future periods when the hedged cash flows impact earnings. To the extent these derivatives are not effective, changes in their fair values are immediately included in Other revenue. Citigroup’s cash flow hedges primarily include hedges of floating-rate debt and floating-rate assets, including loans and securities
purchased under agreement to resell, as well as rollovers of short-term fixed-rate liabilities and floating-rate liabilities and forecasted debt issuances.
For net investment hedges in which derivatives hedge the foreign currency exposure of a net investment in a foreign operation, the accounting treatment will similarly depend on the effectiveness of the hedge. The effective portion of the change in fair value of the derivative, including any forward premium or discount, is reflected in Accumulated other comprehensive income (loss) as part of the foreign currency translation adjustment.
For those accounting hedge relationships that are terminated or when hedge designations are removed, the hedge accounting treatment described in the paragraphs above is no longer applied. Instead, the end-user derivative is terminated or transferred to the trading account. For fair value hedges, any changes in the fair value of the hedged item remain as part of the basis of the asset or liability and are ultimately reflected as an element of the yield. For cash flow hedges, any changes in fair value of the end-user derivative remain in Accumulated other comprehensive income (loss) and are included in earnings of future periods when the hedged cash flows impact earnings. However, if it becomes probable that some or all of the hedged forecasted transactions will not occur, any amounts that remain in Accumulated other comprehensive income (loss) related to these transactions are immediately reflected in Other revenue.
End-user derivatives that are economic hedges, rather than qualifying for hedge accounting, are also carried at fair value, with changes in value included in Principal transactions or Other revenue. Citigroup often uses economic hedges when qualifying for hedge accounting would be too complex or operationally burdensome. Examples are hedges of the credit risk component of commercial loans and loan commitments. Citigroup periodically evaluates its hedging strategies in other areas and may designate either a qualifying hedge or an economic hedge, after considering the relative cost and benefits. Economic hedges are also employed when the hedged item itself is marked to market through current earnings, such as hedges of commitments to originate one-to-four-family mortgage loans to be held for sale and MSRs. See Note 23 to the Consolidated Financial Statements for a further discussion of the Company’s hedging and derivative activities.
Employee Benefits Expense
Employee benefits expense includes current service costs of pension and other postretirement benefit plans (which are accrued on a current basis), contributions and unrestricted awards under other employee plans, the amortization of restricted stock awards and costs of other employee benefits.
For its most significant pension and postretirement benefit plans (Significant Plans), the Company measures and discloses plan obligations, plan assets and periodic plan expense quarterly, instead of annually. The effect of remeasuring the Significant Plan obligations and assets by updating plan actuarial assumptions on a quarterly basis is reflected in Accumulated other comprehensive income (loss) and periodic plan expense. All other plans (All Other Plans) are remeasured annually. See Note 8 to the Consolidated Financial Statements.
Stock-Based Compensation
The Company recognizes compensation expense related to stock and option awards over the requisite service period, generally based on the instruments’ grant-date fair value, reduced by expected forfeitures. Compensation cost related to awards granted to employees who meet certain age plus years-of-service requirements (retirement-eligible employees) is accrued in the year prior to the grant date, in the same manner as the accrual for cash incentive compensation. Certain stock awards with performance conditions or certain clawback provisions are subject to variable accounting, pursuant to which the associated compensation expense fluctuates with changes in Citigroup’s stock price. See Note 7 to the Consolidated Financial Statements.
Income Taxes
The Company is subject to the income tax laws of the U.S. and its states and municipalities, and the foreign jurisdictions in which it operates. These tax laws are complex and subject to different interpretations by the taxpayer and the relevant governmental taxing authorities. In establishing a provision for income tax expense, the Company must make judgments and interpretations about the application of these inherently complex tax laws. The Company must also make estimates about when in the future certain items will affect taxable income in the various tax jurisdictions, both domestic and foreign.
Disputes over interpretations of the tax laws may be subject to review and adjudication by the court systems of the various tax jurisdictions or may be settled with the taxing authority upon examination or audit. The Company treats interest and penalties on income taxes as a component of Income tax expense.
Deferred taxes are recorded for the future consequences of events that have been recognized for financial statements or tax returns, based upon enacted tax laws and rates. Deferred tax assets are recognized subject to management’s judgment that realization is more-likely-than-not. FASB Interpretation No. 48, “Accounting for Uncertainty in Income Taxes” (FIN 48) (now incorporated into ASC 740, Income Taxes), sets out a consistent framework to determine the appropriate level of tax reserves to maintain for uncertain tax positions. This interpretation uses a two-step approach wherein a tax benefit is recognized if a position is more-likely-than-not to be sustained. The amount of the benefit is then measured to be the highest tax benefit that is greater than 50% likely to be realized. ASC 740 also sets out disclosure requirements to enhance transparency of an entity’s tax reserves.
See Note 9 to the Consolidated Financial Statements for a further description of the Company’s tax provision and related income tax assets and liabilities.
Commissions, Underwriting and Principal Transactions
Commissions revenues are recognized in income when earned. Underwriting revenues are recognized in income typically at the closing of the transaction. Principal transactions revenues are recognized in income on a trade-date basis. See Note 5 to the Consolidated Financial Statements for a description of the Company’s revenue recognition policies for commissions and fees, and Note 6 to the Consolidated Financial Statements for details of principal transactions revenue.
Earnings per Share
Earnings per share (EPS) is computed after deducting preferred stock dividends. The Company has granted restricted and deferred share awards with dividend rights that are considered to be participating securities, which are akin to a second class of common stock. Accordingly, a portion of Citigroup’s earnings is allocated to those participating securities in the EPS calculation.
Basic earnings per share is computed by dividing income available to common stockholders after the allocation of dividends and undistributed earnings to the participating securities by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised. It is computed after giving consideration to the weighted average dilutive effect of the Company’s stock options and warrants and convertible securities and after the allocation of earnings to the participating securities.
Use of Estimates
Management must make estimates and assumptions that affect the Consolidated Financial Statements and the related footnote disclosures. Such estimates are used in connection with certain fair value measurements. See Note 25 to the Consolidated Financial Statements for further discussions on estimates used in the determination of fair value. Moreover, estimates are significant in determining the amounts of other-than-temporary impairments, impairments of goodwill and other intangible assets, provisions for probable losses that may arise from credit-related exposures and probable and estimable losses related to litigation and regulatory proceedings, and tax reserves. While management makes its best judgment, actual amounts or results could differ from those estimates. Current market conditions increase the risk and complexity of the judgments in these estimates.
Cash Flows
Cash equivalents are defined as those amounts included in Cash and due from banks. Cash flows from risk management activities are classified in the same category as the related assets and liabilities.
Related Party Transactions
The Company has related party transactions with certain of its subsidiaries and affiliates. These transactions, which are primarily short-term in nature, include cash accounts, collateralized financing transactions, margin accounts, derivative trading, charges for operational support and the borrowing and lending of funds, and are entered into in the ordinary course of business.
ACCOUNTING CHANGES
Accounting for Share-Based Payments with Performance Targets
In June 2014, the FASB issued Accounting Standards Update (ASU) No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (a consensus of the FASB Emerging Issues Task Force). The ASU prescribes the accounting to be applied to share-based awards that contain performance targets, the outcome of which will only be confirmed after the employee’s service period associated with the award has ended. Citi elected to adopt this ASU from the third quarter of 2014. The impact of adopting the ASU was not material.
Discontinued Operations and Significant Disposals
The FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 810) and Property, Plant, and Equipment (Topic 360), Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (ASU 2014-08) in April 2014. ASU 2014-08 changes the criteria for reporting discontinued operations while enhancing disclosures. Under the ASU, only disposals representing a strategic shift having a major effect on an entity’s operations and financial results, such as a disposal of a major geographic area, a major line of business or a major equity method investment, may be presented as discontinued operations. Additionally, the ASU requires expanded disclosures about discontinued operations that will provide more information about the assets, liabilities, income and expenses of discontinued operations.
The Company early-adopted the ASU in the second quarter of 2014 on a prospective basis for all disposals (or classifications as held-for-sale) of components of an entity that occurred on or after April 1, 2014. As a result of the adoption of the ASU, fewer disposals will now qualify for reporting as discontinued operations; however, disclosure of the pretax income attributable to a disposal of a significant part of an organization that does not qualify for discontinued operations reporting is required. The impact of adopting the ASU was not material.
Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Foreign Subsidiaries
In March 2013, the FASB issued ASU No. 2013-05, Foreign Currency Matters (Topic 830): Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity (a consensus of the FASB Emerging Issues Task Force). This ASU clarifies the accounting for the cumulative translation adjustment (CTA) when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. The ASU requires the CTA to remain in equity until the foreign entity is disposed of or it is completely or substantially liquidated.
This ASU became effective for Citi on January 1, 2014 and was applied on a prospective basis. The accounting prescribed in this ASU is consistent with Citi’s prior practice and, as a result, adoption did not result in any impact to Citi.
OCC Chapter 7 Bankruptcy Guidance
In the third quarter of 2012, the Office of the Comptroller of the Currency (OCC) issued guidance relating to the accounting for mortgage loans discharged through bankruptcy proceedings pursuant to Chapter 7 of the U.S. Bankruptcy Code (Chapter 7 bankruptcy). Under this OCC guidance, the discharged loans are accounted for as troubled debt restructurings (TDRs). These TDRs, other than FHA-insured loans, are written down to their collateral value less
cost to sell. FHA-insured loans are reserved for, based on a discounted cash flow model. As a result of implementing this guidance, Citigroup recorded an incremental $635 million of charge-offs in the third quarter of 2012, the vast majority of which related to loans that were current. These charge-offs were substantially offset by a related loan loss reserve release of approximately $600 million, with a net reduction in pretax income of $35 million. In the fourth quarter of 2012, Citigroup recorded a benefit to charge-offs of approximately $40 million related to finalizing the impact of this OCC guidance. Furthermore, as a result of this OCC guidance, TDRs increased by $1.7 billion and non-accrual loans increased by $1.5 billion in the third quarter of 2012 ($1.3 billion of which was current).
Fair Value Measurement
In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS. The ASU created a common definition of fair value for GAAP and IFRS and aligned the measurement and disclosure requirements. It required significant additional disclosures both of a qualitative and quantitative nature, particularly for those instruments measured at fair value that are classified in Level 3 of the fair value hierarchy. Additionally, the ASU provided guidance on when it is appropriate to measure fair value on a portfolio basis and expanded the prohibition on valuation adjustments where the size of the Company’s position is a characteristic of the adjustment from Level 1 to all levels of the fair value hierarchy.
The ASU became effective for Citigroup on January 1, 2012. As a result of implementing the prohibition on valuation adjustments where the size of the Company’s position is a characteristic, the Company released reserves of approximately $125 million, increasing pretax income in the first quarter of 2012.
Deferred Asset Acquisition Costs
In October 2010, the FASB issued ASU No. 2010-26, Financial Services-Insurance (Topic 944): Accounting for Costs Associated with Acquiring or Renewing Insurance Contracts. The ASU amended the guidance for insurance entities that required deferral and subsequent amortization of certain costs incurred during the acquisition of new or renewed insurance contracts, commonly referred to as deferred acquisition costs (DAC). The new guidance limited DAC to those costs directly related to the successful acquisition of insurance contracts; all other acquisition-related costs must be expensed as incurred. Under prior guidance, DAC consisted of those costs that vary with, and primarily relate to, the acquisition of insurance contracts.
The ASU became effective for Citigroup on January 1, 2012 and was adopted using the retrospective method. As a result of implementing the ASU, in the first quarter of 2012, DAC was reduced by approximately $165 million and a $58 million deferred tax asset was recorded with an offset to opening retained earnings of $107 million (net of tax).
Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure
In August 2014, the FASB issued ASU No. 2014-14, Receivables-Troubled Debt Restructuring by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure, which requires that a mortgage loan be derecognized and a separate other receivable be recognized upon foreclosure if the following conditions are met: (i) the loan has a government guarantee that is not separable from the loan before foreclosure; (ii) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and (iii) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable is measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor.
Citi early adopted the ASU on a modified retrospective basis in the fourth quarter of 2014, which resulted in reclassifying approximately $130 million of foreclosed assets from Other Real Estate Owned to a separate other receivable that is included in Other assets. Given the modified retrospective approach to adoption, prior periods have not been restated.
FUTURE APPLICATION OF ACCOUNTING STANDARDS
Accounting for Investments in Tax Credit Partnerships
In January 2014, the FASB issued ASU 2014-01, Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. Any transition adjustment is reflected as an adjustment to retained earnings in the earliest period presented (retrospective application).
The ASU is applicable to Citi’s portfolio of low income housing tax credit (LIHTC) partnership interests. The new standard widens the scope of investments eligible to elect to apply a new alternative method, the proportional amortization method, under which the cost of the investment is amortized to tax expense in proportion to the amount of tax credits and other tax benefits received. Citi qualifies to elect the proportional amortization method under the ASU for its entire LIHTC portfolio. These investments are currently accounted for under the equity method, which results in losses (due to amortization of the investment) being recognized in Other revenue and tax credits and benefits being recognized in the Income tax expense line. In contrast, the proportional amortization method combines the amortization of the investment and receipt of the tax credits/benefits into one line, Income tax expense.
Citi adopted ASU 2014-01 in the first quarter of 2015.
The adoption of this ASU will reduce Retained earnings by approximately $349 million, Other assets by approximately $178 million, and deferred tax assets by approximately $171 million, each in the first quarter of 2015.
Revenue Recognition
In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in GAAP when it becomes effective on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its financial statements.
Accounting for Repurchase-to-Maturity Transactions
In June 2014, the FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The ASU changes the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowed accounting, which is consistent with the accounting for other repurchase agreements. The ASU also requires disclosures about transfers accounted for as sales in transactions that are economically similar to repurchase agreements and about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The ASU’s provisions became effective for Citi from the first quarter of 2015, with the exception of the collateral disclosures which will be effective from the second quarter of 2015. The effect of adopting the ASU is required to be reflected as a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption. Adoption of the ASU did not have a material effect on the Company’s financial statements.
Measuring the Financial Assets and Liabilities of a Consolidated Collateralized Financial Entity
In August 2014, the FASB issued ASU No. 2014-13, Consolidation (Topic 810): Measuring the Financial Assets and the Financial Liabilities of a Consolidated Collateralized Financing Entity, which provides two alternative methods for measuring the fair value of a consolidated Collateralized Financing Entity’s (CFE) financial assets and financial liabilities. This election is made separately for each CFE subject to the scope of the ASU. The first method requires the fair value of the financial assets and liabilities to be measured using the requirements of ASC Topic 820, Fair Value Measurements and Disclosures, with any differences between the fair value of the financial assets and financial liabilities being attributed to the CFE and reflected in earnings in the consolidated statement of income. The alternative method requires measuring both the financial assets and financial liabilities using the more observable of the fair value of the assets or liabilities. The alternative method would also take into consideration the carrying value of any beneficial interests of the CFE held by the parent, including those representing compensation for services, and the carrying value of any nonfinancial assets held temporarily. The ASU will be effective for Citi from the first quarter of 2016 and is not expected to have a material effect on the Company.
Accounting for Derivatives: Hybrid Financial Instruments
In November 2014, the FASB issued ASU No. 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity. The ASU will require an entity to evaluate the economic characteristics and risks of an entire hybrid financial instrument issued in the form of a share (including the embedded derivative feature) in order to determine whether the nature of the host contract is more akin to debt or equity. Additionally, the ASU clarifies that no single term or feature would necessarily determine the economic characteristics and risks of the host contract; therefore, an entity should use judgment based on an evaluation of all the relevant terms and features.
This ASU is effective for Citi from the first quarter of 2016 with early adoption permitted. Citi may choose to report the effects of initial adoption as a cumulative-effect adjustment to retained earnings as of January 1, 2016 or apply the guidance retrospectively to all prior periods. The impact of adopting this ASU is not expected to be material to Citi.
Accounting for Financial Instruments-Credit Losses
In December 2012, the FASB issued a proposed ASU, Financial Instruments-Credit Losses. This proposed ASU, or exposure draft, was issued for public comment in order to allow stakeholders the opportunity to review the proposal and provide comments to the FASB and does not constitute accounting guidance until a final ASU is issued.
The exposure draft contains proposed guidance developed by the FASB with the goal of improving financial reporting about expected credit losses on loans, securities and other financial assets held by financial institutions and other organizations. The exposure draft proposes a new accounting model intended to require earlier recognition of credit losses, while also providing additional transparency about credit risk.
The FASB’s proposed model would utilize an “expected credit loss” measurement objective for the recognition of credit losses for loans, held-to-maturity securities and other receivables at the time the financial asset is originated or acquired and adjusted each period for changes in expected credit losses. For available-for-sale securities where fair value is less than cost, impairment would be recognized in the allowance for credit losses and adjusted each period for changes in credit. This would replace the multiple existing impairment models in GAAP, which generally require that a loss be “incurred” before it is recognized.
The FASB’s proposed model represents a significant departure from existing GAAP, and may result in material changes to the Company’s accounting for financial instruments. The impact of the FASB’s final ASU on the Company’s financial statements will be assessed when it is issued. The exposure draft does not contain a proposed effective date; this would be included in the final ASU, when issued.
Consolidation
In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, which is intended to improve certain areas of consolidation guidance for legal entities such as limited partnerships, limited liability companies, and securitization structures. The ASU will reduce the number of consolidation models. The ASU will be effective on January 1, 2016. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the effect that ASU 2015-02 will have on its Consolidated Financial Statements.

DISCONTINUED_OPERATIONS_AND_SI

DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS	12 Months Ended
	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS	DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS
	Discontinued Operations
	The following Discontinued operations are recorded within the Corporate/Other segment.
	Sale of Brazil Credicard Business
	On December 20, 2013, Citi sold its non-Citibank-branded cards and consumer finance business in Brazil (Credicard) for approximately $1.24 billion.  The sale resulted in a pretax gain of $206 million ($325 million after-tax). In the fourth quarter of 2014, resolution of certain contingencies related to the disposal are reported as Income (loss) from discontinued operations. Credicard is reported as Discontinued operations for all periods presented. Summarized financial information for Discontinued operations for Credicard follows:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	69		$	1,012		$	1,045
	Income (loss) from discontinued operations	$	63		$	(48	)	$	110
	Gain on sale	—			206			—
	Provision (benefit) for income taxes	11			(138		)	19
	Income (loss) from discontinued operations, net of taxes	$	52		$	296		$	91
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash Flows from Discontinued Operations
	In millions of dollars	2014			2013			2012
	Cash flows from operating activities	$	—		$	197		$	(205	)
	Cash flows from investing activities	—			(207		)	195
	Cash flows from financing activities	—			—			16
	Net cash provided by discontinued operations	$	—		$	(10	)	$	6
	Sale of Certain Citi Capital Advisors Business
	During the third quarter of 2012, Citi executed definitive agreements to transition a carve-out of its liquid strategies business within Citi Capital Advisors (CCA). The sale occurred pursuant to two separate transactions in 2013, creating two separate management companies. The first transaction closed in February 2013, and Citigroup retained a 24.9% passive equity interest in the management company (which is held in Citi’s Institutional Clients Group segment). The second transaction closed in August 2013. CCA is reported as Discontinued operations for all periods presented.
	Summarized financial information for Discontinued operations for the operations related to CCA follows:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	—		$	74		$	60
	Income (loss) from discontinued operations	$	(7	)	$	(158	)	$	(123	)
	Gain on sale	—			62			—
	Provision (benefit) for income taxes	(3		)	(30		)	(44		)
	Income (loss) from discontinued operations, net of taxes	$	(4	)	$	(66	)	$	(79	)
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash Flows from Discontinued Operations
	In millions of dollars	2014			2013			2012
	Cash flows from operating activities	$	—		$	(43	)	$	(4	)
	Cash flows from investing activities	—			—			4
	Cash flows from financing activities	—			43			—
	Net cash provided by discontinued operations	$	—		$	—		$	—
	Sale of Egg Banking plc Credit Card Business
	In April 2011, Citi completed the sale of the Egg Banking plc (Egg) credit card business. Summarized financial information for Discontinued operations for the operations related to Egg follows:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	5		$	—		$	1
	Income (loss) from discontinued operations	$	(46	)	$	(62	)	$	(96	)
	Gain (loss) on sale	—			—			(1		)
	Provision (benefit) for income taxes	(16		)	(22		)	(34		)
	Income (loss) from discontinued operations, net of taxes	$	(30	)	$	(40	)	$	(63	)
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash flows from Discontinued operations related to Egg were not material for all periods presented.
	Audit of Citi German Consumer Tax Group
	Citi sold its German retail banking operations in 2007 and reported them as Discontinued operations. During the third quarter of 2013, German tax authorities concluded their audit of Citi’s German consumer tax group for the years 2005-2008. This resolution resulted in a pretax benefit of $27 million and a tax benefit of $57 million ($85 million total net income benefit) during the third quarter of 2013, all of which was included in Discontinued operations. During 2014, residual costs associated with German retail banking operations resulted in a tax expense of $20 million.
	Combined Results for Discontinued Operations
	The following is summarized financial information for Credicard, CCA, Egg and previous Discontinued operations for which Citi continues to have minimal residual costs associated with the sales:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	74		$	1,086		$	1,106
	Income (loss) from discontinued operations	$	10		$	(242	)	$	(109	)
	Gain on sale	—			268			(1		)
	Provision (benefit) for income taxes	12			(244		)	(52		)
	Income (loss) from discontinued operations, net of taxes	$	(2	)	$	270		$	(58	)
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash Flows from Discontinued Operations
	In millions of dollars	2014			2013			2012
	Cash flows used in operating activities	$	—		$	154		$	(209	)
	Cash flows from investing activities	—			(207		)	199
	Cash flows from financing activities	—			43			16
	Net cash provided by discontinued operations	$	—		$	(10	)	$	6
	Significant Disposals
	The following sales were identified as significant disposals, including the assets and liabilities that were reclassified to held-for-sale within Other assets and Other liabilities on the Consolidated Balance Sheet and the Income (loss) before taxes (benefits) related to each business.
	Agreement to Sell Japan Retail Banking Business
On December 25, 2014, Citi entered into an agreement to sell its Japan retail banking business that will be reported as part of Citi Holdings effective January 1, 2015. The sale, which is subject to regulatory approvals and other customary closing conditions, is expected to occur by the fourth quarter of 2015 and result in an after-tax gain upon completion. Income before taxes for the period in which the individually significant component was classified as held-for-sale and for all prior periods are as follows:
In millions of dollars	2014			2013			2012
Income before taxes	$	(5	)	$	31		$	(4	)
The following assets and liabilities for the Japan retail banking business were identified and reclassified to held-for-sale within Other assets and Other liabilities on the Consolidated Balance Sheet at December 31, 2014:
In millions of dollars	December 31, 2014
Assets
Cash and deposits with banks	$	151
Loans (net of allowance of $2 million)	544
Goodwill	51
Other assets, advances to/from subs	19,854
Other assets	66
Total assets	$	20,666
Liabilities
Deposits	$	20,605
Other liabilities	61
Total liabilities	$	20,666
Sale of Spain Consumer Operations
On September 22, 2014, Citi sold its consumer operations in Spain, which was part of Citi Holdings, including $1.7 billion of consumer loans (net of allowance), $3.4 billion of assets under management, $2.2 billion of customer deposits, 45 branches, 48 ATMs and 938 employees, with the buyer assuming the related current pension commitments at closing. The transaction generated a pretax gain on sale of $243 million ($131 million after-tax). Income before taxes for the period in which the individually significant component was classified as held for sale and for all prior periods are as follows:
In millions of dollars	2014			2013			2012
Income before taxes	$	373		$	59		$	6
Sale of Greece Consumer Operations
On September 30, 2014, Citi sold its consumer operations in Greece, which were part of Citi Holdings, including $353 million of consumer loans (net of allowance), $1.1 billion of assets under management, $1.2 billion of customer deposits, 20 branches, 85 ATMs and 719 employees, with the buyer assuming certain limited pension obligations related to Diners’ Club’s employees at closing. The transaction generated a pretax gain on sale of $209 million ($91 million after-tax).
Income before taxes for the period in which the individually significant component was classified as held-for-sale and for all prior periods are as follows:
In millions of dollars	2014	2013	2012
Income before taxes	$133	($113)	$	(258	)

BUSINESS_SEGMENTS

BUSINESS SEGMENTS	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
BUSINESS SEGMENTS	BUSINESS SEGMENTS
	Citigroup’s activities are conducted through the Global Consumer Banking (GCB), Institutional Clients Group (ICG), Corporate/Other and Citi Holdings business segments.
	GCB includes a global, full-service consumer franchise delivering a wide array of banking, credit card lending and investment services through a network of local branches, offices and electronic delivery systems and is composed of four GCB businesses: North America, EMEA, Latin America and Asia.
	ICG is composed of Banking and Markets and securities services and provides corporate, institutional, public sector and high-net-worth clients in approximately 100 countries with a broad range of banking and financial products and services.
	Corporate/Other includes certain unallocated costs of global functions, other corporate expenses and net treasury results, unallocated corporate expenses, offsets to certain line-item reclassifications and eliminations, the results of discontinued operations and unallocated taxes.
	Citi Holdings is composed of businesses and portfolios of assets that Citigroup has determined are not central to its core Citicorp businesses.
	The accounting policies of these reportable segments are the same as those disclosed in Note 1 to the Consolidated Financial Statements.
	The prior-period balances reflect reclassifications to conform the presentation in those periods to the current period’s presentation. Effective January 1, 2014, certain business activities within the former Securities and Banking and Transaction Services were realigned and aggregated as Banking and Markets and securities services within ICG. This change was due to the realignment of the management structure within ICG and did not have an impact on any total segment-level information. In addition, during the first quarter of 2014, reclassifications were made related to Citi’s re-allocation of certain administrative, operations and technology costs among Citi’s businesses, the allocation of certain costs from Corporate/Other to Citi’s businesses as well as certain immaterial reclassifications between revenues and expenses affecting ICG.
	The following table presents certain information regarding the Company’s continuing operations by segment:
		Revenues,							Provision (benefits)									Income (loss) from									Identifiable assets
		net of interest expense (1)							for income taxes									continuing operations (2)
	In millions of dollars, except identifiable assets in billions	2014		2013		2012			2014			2013			2012			2014			2013			2012			2014		2013
	Global Consumer Banking	$	37,753	$	38,165	$	39,105		$	3,473		$	3,424		$	3,468		$	6,938		$	6,763		$	7,597		$	396	$	405
	Institutional Clients Group	33,267		33,567		30,762			3,729			3,857			2,021			9,521			9,414			7,834			1,020		1,045
	Corporate/Other	47		121		128			(459		)	(282		)	(1,093		)	(5,593		)	(630		)	(1,048		)	329		313
	Total Citicorp	$	71,067	$	71,853	$	69,995		$	6,743		$	6,999		$	4,396		$	10,866		$	15,547		$	14,383		$	1,745	$	1,763
	Citi Holdings	5,815		4,566		(805		)	121			(1,132		)	(4,389		)	(3,366		)	(1,917		)	(6,565		)	98		117
	Total	$	76,882	$	76,419	$	69,190		$	6,864		$	5,867		$	7		$	7,500		$	13,630		$	7,818		$	1,843	$	1,880
	(1)	Includes Citicorp (excluding Corporate/Other) total revenues, net of interest expense, in North America of $32.0 billion, $31.2 billion and $29.9 billion; in EMEA of $10.9 billion, $11.5 billion and $11.5 billion; in Latin America of $13.4 billion, $14.0 billion and $13.5 billion; and in Asia of $14.7 billion, $15.0 billion and $15.0 billion in 2014, 2013, and 2012, respectively.
	(2)	Includes pretax provisions (credits) for credit losses and for benefits and claims in GCB of $6.1 billion, $6.8 billion and $6.2 billion; in ICG of $57 million, $78 million and $276 million; and in Citi Holdings of $1.3 billion, $1.6 billion and $4.9 billion in 2014, 2013, and 2012, respectively.

INTEREST_REVENUE_AND_EXPENSE

INTEREST REVENUE AND EXPENSE	12 Months Ended
	Dec. 31, 2014
Interest Revenue (Expense), Net [Abstract]
INTEREST REVENUE AND EXPENSE	INTEREST REVENUE AND EXPENSE
	For the years ended December 31, 2014, 2013 and 2012 Interest revenue and Interest expense consisted of the following:
	In millions of dollars	2014		2013		2012
	Interest revenue
	Loan interest, including fees	$	44,776	$	45,580	$	47,712
	Deposits with banks	959		1,026		1,261
	Federal funds sold and securities borrowed or purchased under agreements to resell	2,366		2,566		3,418
	Investments, including dividends	7,195		6,919		7,525
	Trading account assets(1)	5,880		6,277		6,802
	Other interest	507		602		580
	Total interest revenue	$	61,683	$	62,970	$	67,298
	Interest expense
	Deposits(2)	$	5,692	$	6,236	$	7,690
	Federal funds purchased and securities loaned or sold under agreements to repurchase	1,895		2,339		2,817
	Trading account liabilities(1)	168		169		190
	Short-term borrowings	580		597		727
	Long-term debt	5,355		6,836		9,188
	Total interest expense	$	13,690	$	16,177	$	20,612
	Net interest revenue	$	47,993	$	46,793	$	46,686
	Provision for loan losses	6,828		7,604		10,458
	Net interest revenue after provision for loan losses	$	41,165	$	39,189	$	36,228
	-1	Interest expense on Trading account liabilities of ICG is reported as a reduction of interest revenue from Trading account assets.
	-2	Includes deposit insurance fees and charges of $1,038 million, $1,132 million and $1,262 million for 2014, 2013 and 2012, respectively.

COMMISSIONS_AND_FEES

COMMISSIONS AND FEES	12 Months Ended
	Dec. 31, 2014
Fees and Commissions [Abstract]
COMMISSIONS AND FEES	COMMISSIONS AND FEES
	The primary components of Commissions and fees revenue are investment banking fees, trading-related fees, credit card and bank card fees and fees related to treasury and securities services in ICG.
	Investment banking fees are substantially composed of underwriting and advisory revenues and are recognized when Citigroup’s performance under the terms of a contractual arrangement is completed, which is typically at the closing of the transaction. Underwriting revenue is recorded in Commissions and fees, net of both reimbursable and non-reimbursable expenses, consistent with the AICPA Audit and Accounting Guide for Brokers and Dealers in Securities (codified in ASC 940-605-05-1). Expenses associated with advisory transactions are recorded in Other operating expenses, net of client reimbursements. Out-of-pocket expenses are deferred and recognized at the time the related revenue is recognized. In general, expenses incurred related to investment banking transactions that fail to close (are not consummated) are recorded gross in Other operating expenses.
	Trading-related fees primarily include commissions and fees from the following: executing transactions for clients on exchanges and over-the-counter markets; sale of mutual funds, insurance and other annuity products; and assisting clients in clearing transactions, providing brokerage services and other such activities. Trading-related fees are recognized when earned in Commissions and fees. Gains or losses, if any, on these transactions are included in Principal transactions (see Note 6 to the Consolidated Financial Statements).
	Credit card and bank card fees are primarily composed of interchange revenue and certain card fees, including annual fees, reduced by reward program costs and certain partner payments. Interchange revenue and fees are recognized when earned, including annual card fees that are deferred and amortized on a straight-line basis over a 12-month period. Reward costs are recognized when points are earned by the customers. The following table presents Commissions and fees revenue for the years ended December 31:
	In millions of dollars	2014		2013		2012
	Investment banking	$	3,687	$	3,315	$	2,991
	Trading-related	2,503		2,563		2,331
	Credit cards and bank cards	2,227		2,472		2,775
	Trade and securities services	1,871		1,847		1,733
	Other consumer(1)	885		911		908
	Checking-related	531		551		615
	Corporate finance(2)	531		516		516
	Loan servicing	380		500		313
	Other	417		266		402
	Total commissions and fees	$	13,032	$	12,941	$	12,584
	-1	Primarily consists of fees for investment fund administration and management, third-party collections, commercial demand deposit accounts and certain credit card services.
	-2	Consists primarily of fees earned from structuring and underwriting loan syndications.

PRINCIPAL_TRANSACTIONS

PRINCIPAL TRANSACTIONS	12 Months Ended
	Dec. 31, 2014
Principal Transactions Revenue, Net [Abstract]
PRINCIPAL TRANSACTIONS	PRINCIPAL TRANSACTIONS
	Principal transactions revenue consists of realized and unrealized gains and losses from trading activities. Trading activities include revenues from fixed income, equities, credit and commodities products and foreign exchange transactions. Not included in the table below is the impact of net interest revenue related to trading activities, which is an integral part of trading activities’ profitability. See Note 4 to the Consolidated Financial Statements for information about net interest revenue related to trading activities. Principal transactions include CVA (credit valuation adjustments on derivatives), FVA (funding valuation adjustments) on over-the-counter derivatives and DVA (debt valuation adjustments on issued liabilities for which the fair value option has been elected).
	The following table presents principal transactions revenue for the years ended December 31:
	In millions of dollars	2014			2013			2012
	Global Consumer Banking	$	787		$	863		$	808
	Institutional Clients Group	5,908			6,494			4,330
	Corporate/Other	(383		)	(80		)	(189		)
	Subtotal Citicorp	$	6,312		$	7,277		$	4,949
	Citi Holdings	386			25			31
	Total Citigroup	$	6,698		$	7,302		$	4,980
	Interest rate contracts(1)	$	3,657		$	4,055		$	2,380
	Foreign exchange contracts(2)	2,008			2,307			2,493
	Equity contracts(3)	(260		)	319			158
	Commodity and other contracts(4)	590			277			108
	Credit products and derivatives(5)	703			344			(159		)
	Total	$	6,698		$	7,302		$	4,980
	-1	Includes revenues from government securities and corporate debt, municipal securities, mortgage securities and other debt instruments. Also includes spot and forward trading of currencies and exchange-traded and over-the-counter (OTC) currency options, options on fixed income securities, interest rate swaps, currency swaps, swap options, caps and floors, financial futures, OTC options and forward contracts on fixed income securities.
	-2	Includes revenues from foreign exchange spot, forward, option and swap contracts, as well as FX translation gains and losses.
	-3	Includes revenues from common, preferred and convertible preferred stock, convertible corporate debt, equity-linked notes and exchange-traded and OTC equity options and warrants.
	-4	Primarily includes revenues from crude oil, refined oil products, natural gas and other commodities trades.
	-5	Includes revenues from structured credit products.

INCENTIVE_PLANS

INCENTIVE PLANS	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
INCENTIVE PLANS	INCENTIVE PLANS
	Discretionary Annual Incentive Awards
	Citigroup grants immediate cash bonus payments, deferred cash awards, stock payments and restricted and deferred stock awards as part of its discretionary annual incentive award program involving a large segment of Citigroup’s employees worldwide. Most of the shares of common stock issued by Citigroup as part of its equity compensation programs are to settle the vesting of the stock components of these awards.
	Discretionary annual incentive awards are generally awarded in the first quarter of the year based upon the previous year’s performance. Awards valued at less than U.S. $100,000 (or the local currency equivalent) are generally paid entirely in the form of an immediate cash bonus. Pursuant to Citigroup policy and/or regulatory requirements, certain employees and officers are subject to mandatory deferrals of incentive pay and generally receive 25% to 60% of their awards in a combination of restricted or deferred stock and deferred cash. Discretionary annual incentive awards to many employees in the EU are subject to deferral requirements regardless of the total award value, with 50% of the immediate incentive delivered in the form of a stock payment or stock unit award subject to a restriction on sale or transfer or hold back (generally, for six months).
	Deferred annual incentive awards are generally delivered as two awards—a restricted or deferred stock award under Citi’s Capital Accumulation Program (CAP) and a deferred cash award. The applicable mix of CAP and deferred cash awards may vary based on the employee’s minimum deferral requirement and the country of employment. In some cases, the entire deferral will be in the form of either a CAP or deferred cash award.
	Subject to certain exceptions (principally, for retirement-eligible employees), continuous employment within Citigroup is required to vest in CAP and deferred cash awards. Post-employment vesting by retirement-eligible employees and participants who meet other conditions is generally conditioned upon their refraining from competition with Citigroup during the remaining vesting period, unless the employment relationship has been terminated by Citigroup under certain conditions.
	Generally, the CAP and deferred cash awards vest in equal annual installments over three- or four-year periods. Vested CAP awards are delivered in shares of common stock. Deferred cash awards are payable in cash and earn a fixed notional rate of interest that is paid only if and when the underlying principal award amount vests. Generally, in the EU, vested CAP shares are subject to a restriction on sale or transfer after vesting, and vested deferred cash awards are subject to hold back (generally, for six months in each case).
	Unvested CAP and deferred cash awards made in January 2011 or later are subject to one or more clawback provisions that apply in certain circumstances, including in the case of employee risk-limit violations or other misconduct, or where the awards were based on earnings that were misstated. CAP awards made to certain employees in February 2013 and later, and deferred cash awards made to certain employees in January 2012, are subject to a formulaic performance-based vesting condition pursuant to which amounts otherwise scheduled to vest will be reduced based on the amount of any pretax loss in the participant’s business in the calendar year preceding the scheduled vesting date. For CAP awards made in February 2013 and later, a minimum reduction of 20% applies for the first dollar of loss.
	In addition, deferred cash awards made to certain employees in February 2013 and later are subject to a discretionary performance-based vesting condition under which an amount otherwise scheduled to vest may be reduced in the event of a “material adverse outcome” for which a participant has “significant responsibility.” Deferred cash awards made to these employees in February 2014 and later are subject to an additional clawback provision pursuant to which unvested awards may be canceled if the employee engaged in misconduct or exercised materially imprudent judgment, or failed to supervise or escalate the behavior of other employees who did.
	Certain CAP and other stock-based awards, including those to participants in the EU that are subject to certain discretionary clawback provisions, are subject to variable accounting, pursuant to which the associated value of the award fluctuates with changes in Citigroup’s common stock price until the date that the award is settled, either in cash or shares. For these awards, the total amount that will be recognized as expense cannot be determined in full until the settlement date.
	Compensation Allowances
	In 2013 and 2014, certain employees of Citigroup’s U.K. regulated entities were granted fixed allowances, in addition to salary and annual incentive awards. Generally, these cash allowances are payable in equal installments during the service year and the following year or two years. The payments cease if the employee does not continue to meet applicable service or other requirements. The allowance payments are not subject to performance conditions or clawback. Discretionary incentives awarded for performance years 2013 and 2014 to employees receiving allowances were at reduced levels and subject to greater deferral requirements, of up to 100% in some cases.
	Sign-on and Long-Term Retention Awards
	Stock awards, deferred cash awards and grants of stock options may be made at various times during the year as sign-on awards to induce new hires to join Citi or to high-potential employees as long-term retention awards.
	Vesting periods and other terms and conditions pertaining to these awards tend to vary by grant. Generally, recipients must remain employed through the vesting dates to vest in the awards, except in cases of death, disability or involuntary termination other than for “gross misconduct.” These awards do not usually provide for post-employment vesting by retirement-eligible participants. Any stock option grants are for Citigroup common stock with exercise prices that are no less than the fair market value at the time of grant.
	Outstanding (Unvested) Stock Awards
	A summary of the status of unvested stock awards granted as discretionary annual incentive or sign-on and long-term retention awards for the 12 months ended December 31, 2014, is presented below:
	Unvested stock awards	Shares		Weighted-
				average grant
				date fair
				value per share
	Unvested at January 1, 2014	61,136,782		$	39.71
	New awards	17,729,497		49.65
	Canceled awards	(2,194,893	)	41.31
	Vested awards (1)	(26,666,993	)	40.94
	Unvested at December 31, 2014	50,004,393		$	42.52
	-1	The weighted-average fair value of the shares vesting during 2014 was approximately $52.02 per share.
	Total unrecognized compensation cost related to unvested stock awards, excluding the impact of forfeiture estimates, was $659 million at December 31, 2014. The cost is expected to be recognized over a weighted-average period of 0.7 years. However, the value of the portion of these awards that is subject to variable accounting will fluctuate with changes in Citigroup’s common stock price.
	Performance Share Units
	Certain executive officers were awarded a target number of performance share units (PSUs) on February 19, 2013, for performance in 2012, and to a broader group of executives on February 18, 2014, and February 18, 2015, for performance in 2013 and 2014, respectively. PSUs will be earned only to the extent that Citigroup attains specified performance goals relating to Citigroup’s return on assets and relative total shareholder return against peers over the three-year period beginning with the year of award. The actual dollar amounts ultimately earned could vary from zero, if performance goals are not met, to as much as 150% of target, if performance goals are meaningfully exceeded. The value of each PSU is equal to the value of one share of Citi common stock. The value of the award will fluctuate with changes in Citigroup’s stock price and the attainment of the specified performance goals for each award, until it is settled solely in cash after the end of the performance period.
	Stock Option Programs
	Stock options have not been granted to Citi’s employees as part of the annual incentive award programs since 2009.
	On February 14, 2011, Citigroup granted options exercisable for approximately 2.9 million shares of Citigroup common stock to certain of its executive officers. The options have six-year terms and vested in three equal annual installments. The exercise price of the options is $49.10, equal to the closing price of a share of Citigroup common stock on the grant date. Upon exercise of the options before the fifth anniversary of the grant date, the shares received on exercise (net of the amount required to pay taxes and the exercise price) are subject to a one-year transfer restriction.
	The February 14, 2011, grant is the only prior stock option grant that was not fully vested by January 1, 2014, and as a result, is the only grant that resulted in an amount of compensation expense in 2014. All other stock option grants were fully vested at December 31, 2013, and as a result Citi will not incur any future compensation expense related to those grants.
	Information with respect to stock option activity under Citigroup’s stock option programs for the years ended December 31, 2014, 2013 and 2012 is as follows:
		2014								2013							2012
		Options		Weighted-			Intrinsic			Options		Weighted-			Intrinsic		Options		Weighted-		Intrinsic
				average			value					average			value				average		value
				exercise			per share					exercise			per share				exercise		per share
				price								price							price
	Outstanding, beginning of period	31,508,106		$	50.72		$	1.39		35,020,397		$	51.2		$	—	37,596,029		$	69.6	$	—
	Forfeited	(28,257	)	40.8			—			(50,914	)	212.35			—		(858,906	)	83.84		—
	Expired	(602,093	)	242.43			—			(86,964	)	528.4			—		(1,716,726	)	438.14		—
	Exercised	(4,363,637	)	40.82			11.37			(3,374,413	)	40.81			9.54		—		—		—
	Outstanding, end of period	26,514,119		$	48		$	6.11		31,508,106		$	50.72		$	1.39	35,020,397		$	51.2	$	—
	Exercisable, end of period	26,514,119								30,662,588							32,973,444
	The following table summarizes information about stock options outstanding under Citigroup’s stock option programs at December 31, 2014:
				Options outstanding				Options exercisable
	Range of exercise prices	Number		Weighted-average	Weighted-average			Number		Weighted-average
		outstanding		contractual life	exercise price			exercisable		exercise price
				remaining
	$29.70—$49.99 (1)	25,617,659		1.1 years	$	42.87		25,617,659		$	42.87
	$50.00—$99.99	69,956		6.1 years	56.76			69,956		56.76
	$100.00—$199.99	502,416		4.0 years	147.13			502,416		147.13
	$200.00—$299.99	124,088		3.1 years	240.28			124,088		240.28
	$300.00—$399.99	200,000		3.1 years	335.5			200,000		335.5
	Total at December 31, 2014	26,514,119		1.2 years	$	48.02		26,514,119		$	48.02
	-1	A significant portion of the outstanding options are in the $40 to $45 range of exercise prices.
	Profit Sharing Plan
	The 2010 Key Employee Profit Sharing Plan (KEPSP) entitled participants to profit-sharing payments calculated with reference to the pretax income of Citicorp (as defined in the KEPSP) over a performance measurement period of January 1, 2010, through December 31, 2013. Generally, if a participant remained employed and all other conditions to vesting and payment were satisfied, the participant became entitled to payment. Payments were made in cash, except for U.K. participants who, pursuant to regulatory requirements, received 50% of their payment in Citigroup common stock that was subject to a six-month sale restriction.
	Independent risk function employees were not eligible to participate in the KEPSP, as the independent risk function participates in the determination of whether payouts will be made under the KEPSP. Instead, they were eligible to receive deferred cash retention awards.
	Other Variable Incentive Compensation
	Citigroup has various incentive plans globally that are used to motivate and reward performance primarily in the areas of sales, operational excellence and customer satisfaction. Participation in these plans is generally limited to employees who are not eligible for discretionary annual incentive awards.
	Summary
Except for awards subject to variable accounting, the total expense recognized for stock awards represents the grant date fair value of such awards, which is generally recognized as a charge to income ratably over the vesting period, other than for awards to retirement-eligible employees and immediately vested awards. Whenever awards are made or are expected to be made to retirement-eligible employees, the charge to income is accelerated based on when the applicable conditions to retirement eligibility were or will be met. If the employee is retirement eligible on the grant date, or the award is vested at grant date, the entire expense is recognized in the year prior to grant.
Recipients of Citigroup stock awards generally do not have any stockholder rights until shares are delivered upon vesting or exercise, or after the expiration of applicable required holding periods. Recipients of restricted or deferred stock awards and stock unit awards, however, may be entitled to receive dividends or dividend-equivalent payments during the vesting period. Recipients of restricted stock awards generally are entitled to vote the shares in their award during the vesting period. Once a stock award vests, the shares are freely transferable, unless they are subject to a restriction on sale or transfer for a specified period. Pursuant to a stock ownership commitment, certain executives have committed to holding most of their vested shares indefinitely.
All equity awards granted since April 19, 2005, have been made pursuant to stockholder-approved stock incentive plans that are administered by the Personnel and Compensation Committee of the Citigroup Board of Directors, which is composed entirely of independent non-employee directors.
At December 31, 2014, approximately 51.6 million shares of Citigroup common stock were authorized and available for grant under Citigroup’s 2014 Stock Incentive Plan, the only plan from which equity awards are currently granted.
The 2014 Stock Incentive Plan and predecessor plans permit the use of treasury stock or newly issued shares in connection with awards granted under the plans. Newly issued shares were distributed to settle the vesting of annual deferred stock awards in January 2012, 2013, 2014 and 2015. The use of treasury stock or newly issued shares to settle stock awards does not affect the compensation expense recorded in the Consolidated Statement of Income for equity awards.
Incentive Compensation Cost
The following table shows components of compensation expense, relating to the above incentive compensation programs, recorded during 2014, 2013 and 2012:
In millions of dollars	2014			2013			2012
Charges for estimated awards to retirement-eligible employees	$	525		$	468		$	444
Amortization of deferred cash awards, deferred cash stock units and performance stock units	311			323			345
Immediately vested stock award expense (1)	51			54			60
Amortization of restricted and deferred stock awards (2)	668			862			864
Option expense	1			10			99
Other variable incentive compensation	803			1,076			670
Profit sharing plan	1			78			246
Total	$	2,360		$	2,871		$	2,728
-1	Represents expense for immediately vested stock awards that generally were stock payments in lieu of cash compensation. The expense is generally accrued as cash incentive compensation in the year prior to grant.
-2	All periods include amortization expense for all unvested awards to non-retirement-eligible employees. Amortization is recognized net of estimated forfeitures of awards.
Future Expenses Associated with Outstanding (Unvested) Awards
Citi expects to record compensation expense in future periods as a result of awards granted for performance in 2014 and years prior. Because the awards contain service or other conditions that will be satisfied in the future, the expense of these already-granted awards is recognized over those future period(s). Citi's expected future expenses, excluding the impact of forfeitures, cancellations, clawbacks and repositioning-related accelerations that have not yet occurred, are summarized in the table below. The portion of these awards that is subject to variable accounting will cause the expense amount to fluctuate with changes in Citigroup’s common stock price.
In millions of dollars	2015			2016			2017			2018 and beyond(1)			Total(2)
Awards granted in 2014 and prior:
Deferred Stock Awards	$357			$204			$92			$6			$659
Deferred Cash Awards	232			123			51			3			409
Future expense related to awards already granted	$589			$327			$143			$9			$1,068
Future expense related to awards granted in 2015(3)	$	400		$	290		$	188		$	164		$	1,042
Total	$989			$617			$331			$173			$2,110
-1	Principally 2018.
-2	$1.8 billion of which is attributable to ICG.
-3	Refers to awards granted on or about February 16, 2015, as part Citi's discretionary annual incentive awards for services performed in 2014, and 2015 compensation allowances.

RETIREMENT_BENEFITS

RETIREMENT BENEFITS	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
RETIREMENT BENEFITS	RETIREMENT BENEFITS
	Pension and Postretirement Plans
	The Company has several non-contributory defined benefit pension plans covering certain U.S. employees and has various defined benefit pension and termination indemnity plans covering employees outside the United States.
	The U.S. qualified defined benefit plan was frozen effective January 1, 2008 for most employees. Accordingly, no additional compensation-based contributions were credited to the cash balance portion of the plan for existing plan participants after 2007. However, certain employees covered under the prior final pay plan formula continue to accrue benefits. The Company also offers postretirement health care and life insurance benefits to certain eligible U.S. retired employees, as well as to certain eligible employees outside the United States.
	The Company also sponsors a number of non-contributory, nonqualified pension plans. These plans, which are unfunded, provide supplemental defined pension benefits to certain U.S. employees. With the exception of certain employees covered under the prior final pay plan formula, the benefits under these plans were frozen in prior years.
	In the second quarter of 2013, the Company changed the method of accounting for its most significant pension and postretirement benefit plans (Significant Plans) such that plan obligations, plan assets and periodic plan expense are remeasured and disclosed quarterly, instead of annually. The Significant Plans captured approximately 80% of the Company’s global pension and postretirement plan obligations as of December 31, 2014. All other plans (All Other Plans) are remeasured annually with a December 31 measurement date.
	Net (Benefit) Expense
	The following table summarizes the components of net (benefit) expense recognized in the Consolidated Statement of Income for the Company’s U.S. qualified and nonqualified pension plans and postretirement plans, and pension and postretirement plans outside the United States, for Significant Plans and All Other Plans, for the years indicated.
		Pension plans																				Postretirement benefit plans
		U.S. plans										Non-U.S. plans										U.S. plans									Non-U.S. plans
	In millions of dollars	2014			2013			2012				2014			2013			2012				2014			2013			2012			2014			2013			2012
	Qualified plans
	Benefits earned during the year	$	6		$	8		$	12			$	178		$	210		$	199			$	—		$	—		$	—		$	15		$	43		$	29
	Interest cost on benefit obligation	541			538			565				376			384			367				33			33			44			120			146			116
	Expected return on plan assets	(878		)	(863		)	(897		)		(384		)	(396		)	(399		)		(1		)	(2		)	(4		)	(121		)	(133		)	(108		)
	Amortization of unrecognized
	Prior service (benefit) cost	(3		)	(4		)	(1		)		1			4			4				—			(1		)	(1		)	(12		)	—			—
	Net actuarial loss	105			104			96				77			95			77				—			—			4			39			45			25
	Curtailment loss (1)	—			21			—				14			4			10				—			—			—			—			—			—
	Settlement (gain) loss (1)	—			—			—				53			13			35				—			—			—			—			(1		)	—
	Special termination benefits (1)	—			—			—				9			8			1				—			—			—			—			—			—
	Net qualified plans (benefit) expense	$	(229	)	$	(196	)	$	(225	)		$	324		$	322		$	294			$	32		$	30		$	43		$	41		$	100		$	62
	Nonqualified plans expense	45			46			42				—			—			—				—			—			—			—			—			—
	Cumulative effect of change in accounting policy(2)	—			(23		)	—				—			—			—				—			—			—			—			3			—
	Total adjusted net (benefit) expense	$	(184	)	$	(173	)	$	(183	)		$	324		$	322		$	294			$	32		$	30		$	43		$	41		$	103		$	62
	-1	Losses due to curtailment, settlement and special termination benefits relate to repositioning actions.
	-2	Cumulative effect of adopting quarterly remeasurement for Significant Plans.
	Contributions
	The Company’s funding practice for U.S. and non-U.S. pension plans is generally to fund to minimum funding requirements in accordance with applicable local laws and regulations. The Company may increase its contributions above the minimum required contribution, if appropriate. In addition, management has the ability to change its funding practices. For the U.S. pension plans, there were no required minimum cash contributions for 2014 or 2013.
	The following table summarizes the actual Company contributions for the years ended December 31, 2014 and 2013, as well as estimated expected Company contributions for 2015. Expected contributions are subject to change since contribution decisions are affected by various factors, such as market performance and regulatory requirements.
		Pension plans (1)																				Postretirement plans (1)
		U.S. plans (2)										Non-U.S. plans										U.S. plans									Non-U.S. plans
	In millions of dollars	2015			2014			2013				2015			2014			2013				2015			2014			2013			2015			2014			2013
	Cash contributions paid by the Company	$	—		$	100		$	—			$	86		$	130		$	308			$	—		$	—		$	—		$	77		$	6		$	251
	Benefits paid directly by the Company	60			58			51				47			100			49				63			56			52			6			6			5
	Total Company contributions	$	60		$	158		$	51			$	133		$	230		$	357			$	63		$	56		$	52		$	83		$	12		$	256
	-1	Payments reported for 2015 are expected amounts.
	-2	The U.S. pension plans include benefits paid directly by the Company for the nonqualified pension plans.
	The estimated net actuarial loss and prior service cost that will be amortized from Accumulated other comprehensive income (loss) into net expense in 2015 are approximately $245 million and $1 million, respectively, for defined benefit pension plans. For postretirement plans, the estimated 2015 net actuarial loss and prior service cost amortizations are approximately $45 million and $(12) million, respectively.
	Funded Status and Accumulated Other Comprehensive Income
	The following table summarizes the funded status and amounts recognized in the Consolidated Balance Sheet for the Company’s U.S. qualified and nonqualified pension plans and postretirement plans, and pension and postretirement plans outside the United States.
	Net Amount Recognized
		Pension plans														Postretirement benefit plans
	In millions of dollars	U.S. plans							Non-U.S. plans							U.S. plans							Non-U.S. plans
		2014			2013				2014			2013				2014			2013				2014			2013
	Change in projected benefit obligation
	Qualified plans
	Projected benefit obligation at beginning of year	$	12,137		$	13,268			$	7,194		$	7,399			$	780		$	1,072			$	1,411		$	2,002
	Cumulative effect of change in accounting policy(1)	—			(368		)		—			385				—			—				—			81
	Benefits earned during the year	6			8				178			210				—			—				15			43
	Interest cost on benefit obligation	541			538				376			384				33			33				120			146
	Plan amendments	—			—				2			(28		)		—			—				(14		)	(171		)
	Actuarial (gain) loss(2)	2,077			(671		)		790			(733		)		184			(253		)		262			(617		)
	Benefits paid, net of participants’ contributions	(701		)	(661		)		(352		)	(296		)		(91		)	(85		)		(93		)	(64		)
	Expected government subsidy	—			—				—			—				11			13				—			—
	Divestitures	—			—				(18		)	—				—			—				(1		)	—
	Settlements	—			—				(184		)	(57		)		—			—				—			(2		)
	Curtailment (gain) loss	—			23				(58		)	(2		)		—			—				(3		)	(3		)
	Special/contractual termination benefits	—			—				9			8				—			—				—			—
	Foreign exchange impact and other	—			—				(685		)	(76		)		—			—				(170		)	(4		)
	Qualified plans	$	14,060		$	12,137			$	7,252		$	7,194			$	917		$	780			$	1,527		$	1,411
	Nonqualified plans (3)	779			692				—			—				—			—				—			—
	Projected benefit obligation at year end	$	14,839		$	12,829			$	7,252		$	7,194			$	917		$	780			$	1,527		$	1,411
	-1	Represents the cumulative effect of adopting quarterly remeasurement for Significant Plans.
-2	2014 amounts for the U.S. plans include impact of the adoption of updated mortality tables (see “Mortality Tables” below).
-3	These plans are unfunded.
	Pension plans														Postretirement benefit plans
	U.S. plans							Non-U.S. plans							U.S. plans							Non-U.S. plans
In millions of dollars	2014			2013				2014			2013				2014			2013				2014			2013
Change in plan assets
Qualified plans
Plan assets at fair value at beginning of year	$	12,731		$	12,656			$	6,918		$	7,154			$	32		$	50			$	1,472		$	1,497
Cumulative effect of change in accounting policy(1)	—			(53		)		—			126				—			3				—			21
Actual return on plan assets	941			789				1,108			(256		)		2			(1		)		166			(223		)
Company contributions	100			—				230			357				56			52				12			256
Plan participants’ contributions	—			—				5			6				51			50				—			—
Divestitures	—			—				(11		)	—				—			—				—			—
Settlements	—			—				(184		)	(61		)		—			—				—			—
Benefits paid	(701		)	(661		)		(357		)	(302		)		(131		)	(122		)		(93		)	(64		)
Foreign exchange impact and other	—			—				(652		)	(106		)		—			—				(173		)	(15		)
Qualified plans	$	13,071		$	12,731			$	7,057		$	6,918			$	10		$	32			$	1,384		$	1,472
Nonqualified plans (2)	—			—				—			—				—			—				—			—
Plan assets at fair value year end	$	13,071		$	12,731			$	7,057		$	6,918			$	10		$	32			$	1,384		$	1,472
Funded status of the plans
Qualified plans(3)	$	(989	)	$	593			$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
Nonqualified plans (2)	(779		)	(692		)		—			—				—			—				—			—
Funded status of the plans at year end	$	(1,768	)	$	(99	)		$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
Net amount recognized
Qualified plans
Benefit asset	$	—		$	593			$	921		$	709			$	—		$	—			$	196		$	407
Benefit liability	(989		)	—				(1,116		)	(985		)		(907		)	(748		)		(339		)	(346		)
Qualified plans	$	(989	)	$	593			$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
Nonqualified plans (2)	(779		)	(692		)		—			—				—			—				—			—
Net amount recognized on the balance sheet	$	(1,768	)	$	(99	)		$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
Amounts recognized in Accumulated other comprehensive income (loss)
Qualified plans
Net transition asset (obligation)	$	—		$	—			$	(1	)	$	(1	)		$	—		$	—			$	—		$	(1	)
Prior service benefit (cost)	3			7				13			(2		)		—			1				157			173
Net actuarial gain (loss)	(5,819		)	(3,911		)		(1,690		)	(2,007		)		(56		)	129				(658		)	(555		)
Qualified plans	$	(5,816	)	$	(3,904	)		$	(1,678	)	$	(2,010	)		$	(56	)	$	130			$	(501	)	$	(383	)
Nonqualified plans (2)	(325		)	(226		)		—			—				—			—				—			—
Net amount recognized in equity - pretax	$	(6,141	)	$	(4,130	)		$	(1,678	)	$	(2,010	)		$	(56	)	$	130			$	(501	)	$	(383	)
Accumulated benefit obligation
Qualified plans	$	14,050		$	12,122			$	6,699		$	6,652			$	917		$	780			$	1,527		$	1,411
Nonqualified plans (2)	771			668				—			—				—			—				—			—
Accumulated benefit obligation at year end	$	14,821		$	12,790			$	6,699		$	6,652			$	917		$	780			$	1,527		$	1,411
-1	Represents the cumulative effect of adopting quarterly remeasurement for Significant Plans.
-2	These plans are unfunded.
-3	The U.S. qualified pension plan is fully funded under specified Employee Retirement Income Security Act (ERISA) funding rules as of January 1, 2015 and no minimum required funding is expected for 2015.
The following table shows the change in Accumulated other comprehensive income (loss) related to Citi’s pension and postretirement benefit plans (for Significant Plans and All Other Plans) for the years indicated.
In millions of dollars		2014				2013				2012
Beginning of period balance, net of tax (1) (2)		$	(3,989	)		$	(5,270	)		$	(4,282	)
Cumulative effect of change in accounting policy(3)		—				(22		)		—
Actuarial assumptions changes and plan experience (4)		(3,404		)		2,380				(2,400		)
Net asset gain (loss) due to difference between actual and expected returns		833				(1,084		)		963
Net amortizations		202				271				214
Prior service credit		13				360				—
Curtailment/ settlement loss (5)		67				—				—
Foreign exchange impact and other		459				74				(155		)
Change in deferred taxes, net		660				(698		)		390
Change, net of tax		$	(1,170	)		$	1,281			$	(988	)
End of period balance, net of tax (1) (2)		$	(5,159	)		$	(3,989	)		$	(5,270	)
-1	See Note 20 to the Consolidated Financial Statements for further discussion of net Accumulated other comprehensive income (loss) balance.
-2	Includes net-of-tax amounts for certain profit sharing plans outside the U.S.
-3	Represents the cumulative effect of adopting quarterly remeasurement for Significant Plans.
-4	Includes $111 million, $(58) million and $62 million of actuarial losses (gains) related to the U.S. nonqualified pension plans for 2014, 2013 and 2012, respectively.
-5	Curtailment and settlement losses relate to repositioning actions.
At December 31, 2014 and 2013, for both qualified and nonqualified pension plans and for both funded and unfunded plans, the aggregate projected benefit obligation (PBO), the aggregate accumulated benefit obligation (ABO), and the aggregate fair value of plan assets are presented for pension plans with a projected benefit obligation in excess of plan assets and for pension plans with an accumulated benefit obligation in excess of plan assets as follows:
	PBO exceeds fair value of plan assets														ABO exceeds fair value plan assets
	U.S. plans (1)							Non-U.S. plans(2)							U.S. plans (1)							Non-U.S. plans(2)
In millions of dollars	2014			2013				2014			2013				2014			2013				2014			2013
Projected benefit obligation	$	14,839		$	692			$	2,756		$	2,765			$	14,839		$	692			$	2,570		$	2,408
Accumulated benefit obligation	14,821			668				2,353			2,375				14,821			668				2,233			2,090
Fair value of plan assets	13,071			—				1,640			1,780				13,071			—				1,495			1,468
-1	At December 31, 2014, for both the U.S. qualified and nonqualified plans, the aggregate PBO and the aggregate ABO exceeded plan assets. At December 31, 2013, assets for the U.S. qualified plan exceeded both the PBO and ABO. The U.S. nonqualified plans are not funded and thus the PBO and ABO exceeded plan assets as of this date.
-2	At December 31, 2014, the aggregate PBO and the aggregate ABO exceeded the aggregate plan assets for non-U.S. plans. Assets for certain non-U.S. plans exceed both the PBO and ABO and, as such, only the aggregate PBO, ABO, and asset values for underfunded non-U.S. plans are presented in the table above.
At December 31, 2014, combined accumulated benefit obligations for the U.S. and non-U.S. pension plans, excluding U.S. nonqualified plans, were more than plan assets by $0.6 billion. At December 31, 2013, combined accumulated benefit obligations for the U.S. and non-U.S. pension plans, excluding U.S. nonqualified plans, were less than plan assets by $0.9 billion.
Plan Assumptions
The Company utilizes a number of assumptions to determine plan obligations and expense. Changes in one or a combination of these assumptions will have an impact on the Company’s pension and postretirement PBO, funded status and benefit expense. Changes in the plans’ funded status resulting from changes in the PBO and fair value of plan assets will have a corresponding impact on Accumulated other comprehensive income (loss).
Certain assumptions used in determining pension and postretirement benefit obligations and net benefit expense for the Company’s plans are shown in the following table:
At year end	2014	2013
Discount rate
U.S. plans (1)
Qualified pension	4.00%	4.75%
Nonqualified pension	3.9	4.75
Postretirement	3.8	4.35
Non-U.S. pension plans (2)
Range	1.00 to 32.50	1.60 to 29.25
Weighted average	4.74	5.6
Non-U.S. postretirement plans (2)
Range	2.25 to 12.00	3.50 to 11.90
Weighted average	7.5	8.65
Future compensation increase rate
U.S. plans (3)	N/A	N/A
Non-U.S. pension plans
Range	1.00 to 30.00	1.00 to 26.00
Weighted average	3.27	3.4
Expected return on assets
U.S. plans	7	7
Non-U.S. pension plans
Range	1.30 to 11.50	1.20 to 11.50
Weighted average	5.08	5.68
Non-U.S. postretirement plans
Range	8.50 to 10.40	8.50 to 8.90
Weighted average	8.51	8.5
-1	Effective April 1, 2013, Citigroup changed to a quarterly remeasurement approach for its Significant Plans, including the U.S. qualified pension and postretirement plans.
For the U.S. qualified pension and postretirement plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligation and will be used to determine the 2015 first quarter expense. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligation and used for the 2014 first quarter expense.
For the U.S. nonqualified pension plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligation and will be used to determine the 2015 first quarter expense. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligations and were used to determine the expense for 2014.
-2	Effective April 1, 2013, Citigroup changed to a quarterly remeasurement approach for its Significant non-U.S. pension and postretirement plans. For the Significant non-U.S. pension and postretirement plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligation and will be used to determine the 2015 first quarter expense. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligation and the 2014 first quarter expense. For all other non-U.S. pension and postretirement plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligations and will be used to determine the expense for 2015. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligations and the expense for 2014.
-3	Since the U.S. qualified pension plan has been frozen, a compensation increase rate applies only to certain small groups of grandfathered employees accruing benefits under a final pay plan formula. Only the future compensation increases for these grandfathered employees will affect future pension expense and obligations. Compensation increase rates for these small groups of participants range from 3.00% to 4.00%.
During the year	2014	2013
Discount rate
U.S. plans (1)
Qualified pension	4.75%/4.55%/ 4.25%/ 4.25%	3.90%/4.20%/ 4.75%/ 4.80%
Nonqualified pension	4.75	3.9
Postretirement	4.35/4.15/3.95/4.00	3.60/3.60/ 4.40/ 4.30
Non-U.S. pension plans
Range	1.60 to 29.25	1.50 to 28.00
Weighted average (2)	5.6	5.24
Non-U.S. postretirement plans
Range	3.50 to 11.90	3.50 to 10.00
Weighted average (2)	8.65	7.46
Future compensation increase rate
U.S. plans (3)	N/A	N/A
Non-U.S. pension plans
Range	1.00 to 26.00	1.20 to 26.00
Weighted average (2)	3.4	3.93
Expected return on assets
U.S. plans	7	7
Non-U.S. pension plans
Range	1.20 to 11.50	0.90 to 11.50
Weighted average (2)	5.68	5.76
Non-U.S. postretirement plans
Range	8.50 to 8.90	8.50 to 9.60
Weighted average (2)	8.5	8.5
-1	For the U.S. qualified pension and postretirement plans, the 2014 and 2013 rates shown above were utilized to calculate the expense in each of the respective four quarters in 2014 and 2013, respectively. For the U.S. nonqualified pension plans, the 2014 and 2013 rates shown above were utilized to calculate expense for 2014 and 2013, respectively.
-2	For the Significant non-U.S. plans, the 2014 and 2013 weighted averages shown above reflect the rates utilized to calculate expense in the first quarters of 2014 and 2013, respectively. For all other non-U.S. plans, the weighted averages shown above reflect the rates utilized to calculate expense for 2014 and 2013, respectively.
-3	Since the U.S. qualified pension plan has been frozen, a compensation increase rate applies only to certain small groups of grandfathered employees accruing benefits under a final pay plan formula. Only the future compensation increases for these grandfathered employees will affect future pension expense and obligations. Compensation increase rates for these small groups of participants range from 3.00% to 4.00%.
Discount Rate
The discount rates for the U.S. pension and postretirement plans were selected by reference to a Citigroup-specific analysis using each plan’s specific cash flows and compared with high-quality corporate bond indices for reasonableness. Citigroup’s policy is to round to the nearest five hundredths of a percent. The discount rates for the non-U.S. pension and postretirement plans are selected by reference to high-quality corporate bond rates in countries that have developed corporate bond markets. However, where developed corporate bond markets do not exist, the discount rates are selected by reference to local government bond rates with a premium added to reflect the additional risk for corporate bonds in certain countries.
Expected Rate of Return
The Company determines its assumptions for the expected rate of return on plan assets for its U.S. pension and postretirement plans using a “building block” approach, which focuses on ranges of anticipated rates of return for each asset class. A weighted average range of nominal rates is then determined based on target allocations to each asset class. Market performance over a number of earlier years is evaluated covering a wide range of economic conditions to determine whether there are sound reasons for projecting any past trends.
The Company considers the expected rate of return to be a long-term assessment of return expectations and does not anticipate changing this assumption unless there are significant changes in investment strategy or economic conditions. This contrasts with the selection of the discount rate and certain other assumptions, which are reconsidered annually (or quarterly for the Significant Plans) in accordance with GAAP.
The expected rate of return for the U.S. pension and postretirement plans was 7.00% at December 31, 2014, 2013 and 2012. The expected return on assets reflects the expected annual appreciation of the plan assets and reduces the Company’s annual pension expense. The expected return on assets is deducted from the sum of service cost, interest cost and other components of pension expense to arrive at the net pension (benefit) expense. Net pension (benefit) expense for the U.S. pension plans for 2014, 2013 and 2012 reflects deductions of $878 million, $863 million and $897 million of expected returns, respectively.
The following table shows the expected rates of return used in determining the Company’s pension expense compared to the actual rate of return on plan assets during 2014, 2013 and 2012 for the U.S. pension and postretirement plans:
	2014		2013		2012
Expected rate of return (1)	7	%	7	%	7.5	%
Actual rate of return (2)	7.8	%	6	%	11	%
-1	Effective December 31, 2012, the expected rate of return was changed from 7.50% to 7.00%.
-2	Actual rates of return are presented net of fees.
For the non-U.S. plans, pension expense for 2014 was reduced by the expected return of $384 million, compared with the actual return of $1,108 million. Pension expense for 2013 and 2012 was reduced by expected returns of $396 million and $399 million, respectively. Actual returns were lower in 2013, but higher in 2014 and 2012 than the expected returns in those years.
Mortality Tables
At December 31, 2014, the Company adopted the Retirement Plan 2014 (RP-2014) and Mortality Projection 2014(MP-2014) mortality tables for U.S. plans.
	2014	2013
Mortality
U.S. plans (1) (2)
Pension	RP-2014/MP-2014	IRS RP-2000(2014)
Postretirement	RP-2014/MP-2014	IRS RP-2000(2014)
-1	The RP-2014 table is the white-collar RP-2014 table, with a 4% increase in rates to reflect the Citigroup-specific mortality experience. The MP-2014 projection scale includes a phase-out of the assumed rates of improvements from 2015 to 2027.
-2	The IRS mortality table (static version) includes a 7-year projection (from the measurement date) after retirement and 15-year projection (from the measurement date) prior to retirement using Projection Scale AA.
Adjustments were made to the RP-2014 tables and to the long-term rate of mortality improvement to reflect Citigroup specific experience. As a result, the U.S. qualified and nonqualified pension and postretirement plans’ PBO at December 31, 2014 increased by $1,209 million and its funded status and AOCI decreased by $1,209 million ($737 million, net of tax). In addition, the 2015 qualified and nonqualified pension and postretirement benefit expense is expected to increase by approximately $73 million.
Sensitivities of Certain Key Assumptions
The following tables summarize the effect on pension expense of a one-percentage-point change in the discount rate:
		One-percentage-point increase
In millions of dollars		2014				2013				2012
U.S. plans		$	28			$	16			$	18
Non-U.S. plans		(39		)		(52		)		(48		)
		One-percentage-point decrease
In millions of dollars		2014				2013				2012
U.S. plans		$	(45	)		$	(57	)		$	(36	)
Non-U.S. plans		56				79				64
Since the U.S. qualified pension plan was frozen, the majority of the prospective service cost has been eliminated and the gain/loss amortization period was changed to the life expectancy for inactive participants. As a result, pension expense for the U.S. qualified pension plan is driven more by interest costs than service costs, and an increase in the discount rate would increase pension expense, while a decrease in the discount rate would decrease pension expense.
The following tables summarize the effect on pension expense of a one-percentage-point change in the expected rates of return:
		One-percentage-point increase
In millions of dollars		2014				2013				2012
U.S. plans		$	(129	)		$	(123	)		$	(120	)
Non-U.S. plans		(67		)		(68		)		(64		)
		One-percentage-point decrease
In millions of dollars		2014				2013				2012
U.S. plans		$	129			$	123			$	120
Non-U.S. plans		67				68				64
Health Care Cost-Trend Rate
Assumed health care cost-trend rates were as follows:
	2014	2013
Health care cost increase rate for
U.S. plans
Following year	7.50%	8.00%
Ultimate rate to which cost increase is assumed to decline	5	5
Year in which the ultimate rate is reached(1)	2020	2020
-1	Weighted average for plans with different following year and ultimate rates.
	2014	2013
Health care cost increase rate for
Non-U.S. plans (weighted average)
Following year	6.94%	6.95%
Ultimate rate to which cost increase is assumed to decline	6.93	6.94
Year in which the ultimate rate is reached	2027	2029
A one-percentage-point change in assumed health care cost-trend rates would have the following effects:
	One-percentage-							One-
	point increase							percentage-
								point decrease
In millions of dollars	2014			2013				2014			2013
Effect on benefits earned and interest cost for U.S. postretirement plans	$	2		$	1			$	(1	)	$	(1	)
Effect on accumulated postretirement benefit obligation for U.S. postretirement plans	40			24				(34		)	(19		)
	One-percentage-							One-
	point increase							percentage-
								point decrease
In millions of dollars	2014			2013				2014			2013
Effect on benefits earned and interest cost for non-U.S. postretirement plans	$	17		$	37			$	(14	)	$	(29	)
Effect on accumulated postretirement benefit obligation for non-U.S. postretirement plans	197			181				(161		)	(137		)
Plan Assets
Citigroup’s pension and postretirement plans’ asset allocations for the U.S. plans at December 31, 2014 and 2013 and the target allocations for 2015 by asset category based on asset fair values, are as follows:
	Target asset		U.S. pension assets					U.S. postretirement assets
	allocation		at December 31,					at December 31,
Asset category (1)	2015		2014		2013			2014		2013
Equity securities (2)	0 - 30%		20	%	19	%		20	%	19	%
Debt securities	25 - 73		44		42			44		42
Real estate	0 - 7		4		5			4		5
Private equity	0 - 10		8		11			8		11
Other investments	0 - 22		24		23			24		23
Total			100	%	100	%		100	%	100	%
-1	Asset allocations for the U.S. plans are set by investment strategy, not by investment product. For example, private equities with an underlying investment in real estate are classified in the real estate asset category, not private equity.
-2	Equity securities in the U.S. pension and postretirement plans do not include any Citigroup common stock at the end of 2014 and 2013.
Third-party investment managers and advisors provide their services to Citigroup’s U.S. pension and postretirement plans. Assets are rebalanced as Citi’s Pension Plan Investment Committee deems appropriate. Citigroup’s investment strategy, with respect to its assets, is to maintain a globally diversified investment portfolio across several asset classes that, when combined with Citigroup’s contributions to the plans, will maintain the plans’ ability to meet all required benefit obligations.
Citigroup’s pension and postretirement plans’ weighted-average asset allocations for the non-U.S. plans and the actual ranges at the end of 2014 and 2013, and the weighted-average target allocations for 2015 by asset category based on asset fair values are as follows:
	Non-U.S. pension plans
	Weighted-average		Actual range			Weighted-average
	target asset allocation		at December 31,			at December 31,
Asset category (1)	2015		2014	2013		2014		2013
Equity securities	17%		0 - 67%	0 - 69%		17	%	20	%
Debt securities	78		0 - 100	0 - 99		77		72
Real estate	1		0 - 21	0 - 19		—		1
Other investments	4		0 - 100	0 - 100		6		7
Total	100%					100	%	100	%
	Non-U.S. postretirement plans
	Weighted-average		Actual range			Weighted-average
	target asset allocation		at December 31,			at December 31,
Asset category (1)	2015		2014	2013		2014		2013
Equity securities	41%		0 - 42%	0 - 41%		42	%	41	%
Debt securities	56		54 - 100	51 - 100		54		51
Other investments	3		0 - 4	0 - 8		4		8
Total	100%					100	%	100	%
-1	Similar to the U.S. plans, asset allocations for certain non-U.S. plans are set by investment strategy, not by investment product.
Fair Value Disclosure
For information on fair value measurements, including descriptions of Level 1, 2 and 3 of the fair value hierarchy and the valuation methodology utilized by the Company, see Note 1 and Note 25 to the Consolidated Financial Statements.
Certain investments may transfer between the fair value hierarchy classifications during the year due to changes in valuation methodology and pricing sources. There were no significant transfers of investments between Level 1 and Level 2 during the years ended December 31, 2014 and 2013.
Plan assets by detailed asset categories and the fair value hierarchy are as follows:
	U.S. pension and postretirement benefit plans (1)
In millions of dollars	Fair value measurement at December 31, 2014
Asset categories	Level 1			Level 2			Level 3			Total
Equity securities
U.S. equity	$	773		$	—		$	—		$	773
Non-U.S. equity	601			—			—			601
Mutual funds	214			—			—			214
Commingled funds	—			939			—			939
Debt securities
U.S. Treasuries	1,178			—			—			1,178
U.S. agency	—			113			—			113
U.S. corporate bonds	—			1,533			—			1,533
Non-U.S. government debt	—			357			—			357
Non-U.S. corporate bonds	—			405			—			405
State and municipal debt	—			132			—			132
Hedge funds	—			2,462			731			3,193
Asset-backed securities	—			41			—			41
Mortgage-backed securities	—			76			—			76
Annuity contracts	—			—			59			59
Private equity	—			—			1,631			1,631
Derivatives	12			637			—			649
Other investments	—			101			260			361
Total investments at fair value	$	2,778		$	6,796		$	2,681		$	12,255
Cash and short-term investments	$	111		$	1,287		$	—		$	1,398
Other investment receivables	—			28			35			63
Total assets	$	2,889		$	8,111		$	2,716		$	13,716
Other investment liabilities	$	(17	)	$	(618	)	$	—		$	(635	)
Total net assets	$	2,872		$	7,493		$	2,716		$	13,081
-1	The investments of the U.S. pension and postretirement benefit plans are commingled in one trust. At December 31, 2014, the allocable interests of the U.S. pension and postretirement benefit plans were 99.9% and 0.1%, respectively.
	U.S. pension and postretirement benefit plans (1)
In millions of dollars	Fair value measurement at December 31, 2013
Asset categories	Level 1			Level 2			Level 3			Total
Equity securities
U.S. equity	$	793		$	—		$	—		$	793
Non-U.S. equity	442			—			—			442
Mutual funds	203			—			—			203
Commingled funds	—			977			—			977
Debt securities
U.S. Treasuries	1,112			—			—			1,112
U.S. agency	—			91			—			91
U.S. corporate bonds	—			1,387			—			1,387
Non-U.S. government debt	—			349			—			349
Non-U.S. corporate bonds	—			398			—			398
State and municipal debt	—			137			—			137
Hedge funds	—			2,132			1,126			3,258
Asset-backed securities	—			61			—			61
Mortgage-backed securities	—			64			—			64
Annuity contracts	—			—			91			91
Private equity	—			—			2,106			2,106
Derivatives	8			601			—			609
Other investments	—			29			150			179
Total investments at fair value	$	2,558		$	6,226		$	3,473		$	12,257
Cash and short-term investments	$	107		$	957		$	—		$	1,064
Other investment receivables	—			49			52			101
Total assets	$	2,665		$	7,232		$	3,525		$	13,422
Other investment liabilities	$	(9	)	$	(650	)	$	—		$	(659	)
Total net assets	$	2,656		$	6,582		$	3,525		$	12,763
-1	The investments of the U.S. pension and postretirement benefit plans are commingled in one trust. At December 31, 2013, the allocable interests of the U.S. pension and postretirement benefit plans were 99.7% and 0.3%, respectively.
	Non-U.S. pension and postretirement benefit plans
In millions of dollars	Fair value measurement at December 31, 2014
Asset categories	Level 1				Level 2				Level 3				Total
Equity securities
U.S. equity	$	6			$	15			$	—			$	21
Non-U.S. equity	86				271				45				402
Mutual funds	207				3,334				—				3,541
Commingled funds	10				25				—				35
Debt securities
U.S. corporate bonds	—				357				—				357
Non-U.S. government debt	3,293				246				1				3,540
Non-U.S. corporate bonds	103				811				5				919
Hedge funds	—				—				10				10
Mortgage-backed securities	—				1				—				1
Annuity contracts	—				1				32				33
Derivatives	11				—				—				11
Other investments	7				13				163				183
Total investments at fair value	$	3,723			$	5,074			$	256			$	9,053
Cash and short-term investments	$	112			$	2			$	—			$	114
Total assets	$	3,835			$	5,076			$	256			$	9,167
Other investment liabilities	$	(3	)		$	(723	)		$	—			$	(726	)
Total net assets	$	3,832			$	4,353			$	256			$	8,441
	Non-U.S. pension and postretirement benefit plans
In millions of dollars	Fair value measurement at December 31, 2013
Asset categories	Level 1				Level 2				Level 3				Total
Equity securities
U.S. equity	$	6			$	13			$	—			$	19
Non-U.S. equity	117				292				49				458
Mutual funds	257				3,593				—				3,850
Commingled funds	7				22				—				29
Debt securities
U.S. corporate bonds	—				392				—				392
Non-U.S. government debt	2,547				232				—				2,779
Non-U.S. corporate bonds	107				780				5				892
Hedge funds	—				—				11				11
Mortgage-backed securities	3				1				—				4
Annuity contracts	—				1				32				33
Derivatives	42				—				—				42
Other investments	7				12				202				221
Total investments at fair value	$	3,093			$	5,338			$	299			$	8,730
Cash and short-term investments	$	92			$	4			$	—			$	96
Total assets	$	3,185			$	5,342			$	299			$	8,826
Other investment liabilities	$	—			$	(436	)		$	—			$	(436	)
Total net assets	$	3,185			$	4,906			$	299			$	8,390
Level 3 Roll Forward
The reconciliations of the beginning and ending balances during the year for Level 3 assets are as follows:
In millions of dollars	U.S. pension and postretirement benefit plans
Asset categories	Beginning Level 3 fair value at				Realized gains (losses)				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2014
	Dec. 31, 2013
Hedge funds	$	1,126			$	63			$	(25	)		$	(264	)		$	(169	)		$	731
Annuity contracts	91				—				(1		)		(31		)		—				59
Private equity	2,106				241				(187		)		(529		)		—				1,631
Other investments	150				(1		)		(5		)		109				7				260
Total investments	$	3,473			$	303			$	(218	)		$	(715	)		$	(162	)		$	2,681
Other investment receivables	52				—				—				(17		)		—				35
Total assets	$	3,525			$	303			$	(218	)		$	(732	)		$	(162	)		$	2,716
In millions of dollars	U.S. pension and postretirement benefit plans
Asset categories	Beginning Level 3 fair value at				Realized gains (losses)				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2013
	Dec. 31, 2012
Hedge funds	$	1,524			$	45			$	69			$	19			$	(531	)		$	1,126
Annuity contracts	130				—				(9		)		(33		)		3				91
Private equity	2,419				264				(10		)		(564		)		(3		)		2,106
Other investments	142				—				7				8				(7		)		150
Total investments	$	4,215			$	309			$	57			$	(570	)		$	(538	)		$	3,473
Other investment receivables	24				—				—				28				—				52
Total assets	$	4,239			$	309			$	57			$	(542	)		$	(538	)		$	3,525
In millions of dollars	Non-U.S. pension and postretirement benefit plans
Asset categories	Beginning Level 3 fair value at Dec. 31, 2013				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2014
Equity securities
Non-U.S. equity	$	49			$	(3	)		$	—			$	(1	)		$	45
Debt securities
Non-U.S. government debt	—				—				—				1				1
Non-U.S. corporate bonds	5				—				1				(1		)		5
Hedge funds	11				(1		)		—				—				10
Annuity contracts	32				—				—				—				32
Other investments	202				(1		)		(33		)		(5		)		163
Total investments	$	299			$	(5	)		$	(32	)		$	(6	)		$	256
Cash and short-term investments	—				—				—				—				—
Total assets	$	299			$	(5	)		$	(32	)		$	(6	)		$	256
In millions of dollars	Non-U.S. pension and postretirement benefit plans
Asset categories	Beginning Level 3 fair value at Dec. 31, 2012				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2013
Equity securities
Non-U.S. equity	$	48			$	5			$	—			$	(4	)		$	49
Debt securities
Non-U.S. government bonds	4				—				—				(4		)		—
Non-U.S. corporate bonds	4				(1		)		2				—				5
Hedge funds	16				1				(6		)		—				11
Annuity contracts	6				3				(1		)		24				32
Other investments	219				—				3				(20		)		202
Total investments	$	297			$	8			$	(2	)		$	(4	)		$	299
Cash and short-term investments	3				—				—				(3		)		—
Total assets	$	300			$	8			$	(2	)		$	(7	)		$	299
Investment Strategy
The Company’s global pension and postretirement funds’ investment strategies are to invest in a prudent manner for the exclusive purpose of providing benefits to participants. The investment strategies are targeted to produce a total return that, when combined with the Company’s contributions to the funds, will maintain the funds’ ability to meet all required benefit obligations. Risk is controlled through diversification of asset types and investments in domestic and international equities, fixed-income securities and cash and short-term investments. The target asset allocation in most locations outside the U.S. is primarily in equity and debt securities. These allocations may vary by geographic region and country depending on the nature of applicable obligations and various other regional considerations. The wide variation in the actual range of plan asset allocations for the funded non-U.S. plans is a result of differing local statutory requirements and economic conditions. For example, in certain countries local law requires that all pension plan assets must be invested in fixed-income investments, government funds, or local-country securities.
Significant Concentrations of Risk in Plan Assets
The assets of the Company’s pension plans are diversified to limit the impact of any individual investment. The U.S. qualified pension plan is diversified across multiple asset classes, with publicly traded fixed income, hedge funds, publicly traded equity, and private equity representing the most significant asset allocations. Investments in these four asset classes are further diversified across funds, managers, strategies, vintages, sectors and geographies, depending on the specific characteristics of each asset class. The pension assets for the Company’s non U.S. Significant Plans are primarily invested in publicly traded fixed income and publicly traded equity securities.
Oversight and Risk Management Practices
The framework for the Company’s pensions oversight process includes monitoring of retirement plans by plan fiduciaries and/or management at the global, regional or country level, as appropriate. Independent risk management contributes to the risk oversight and monitoring for the Company’s U.S. qualified pension plan and non-U.S.Significant Pension Plans. Although the specific components of the oversight process are tailored to the requirements of each region, country and plan, the following elements are common to the Company’s monitoring and risk management process:
•	periodic asset/liability management studies and strategic asset allocation reviews;
•	periodic monitoring of funding levels and funding ratios;
•	periodic monitoring of compliance with asset allocation guidelines;
•	periodic monitoring of asset class and/or investment manager performance against benchmarks; and
•	periodic risk capital analysis and stress testing.
Estimated Future Benefit Payments
The Company expects to pay the following estimated benefit payments in future years:
	Pension plans								Postretirement benefit plans
In millions of dollars	U.S. plans				Non-U.S. plans				U.S. plans				Non-U.S. plans
2015	$	835			$	368			$	73			$	65
2016	860				339				72				70
2017	868				366				71				75
2018	882				383				70				81
2019	900				413				68				88
2020—2024	4,731				2,452				317				574
Prescription Drugs
In December 2003, the Medicare Prescription Drug Improvement and Modernization Act of 2003 (Act of 2003) was enacted. The Act of 2003 established a prescription drug benefit under Medicare known as “Medicare Part D,” and a federal subsidy to sponsors of U.S. retiree health care benefit plans that provide a benefit that is at least actuarially equivalent to Medicare Part D. The benefits provided to certain participants are at least actuarially equivalent to Medicare Part D and, accordingly, the Company is entitled to a subsidy.
The subsidy reduced the accumulated postretirement benefit obligation (APBO) by approximately $5 million as of December 31, 2014 and $4 million as of December 31, 2013 and the postretirement expense by approximately $0.2 million and $3 million for 2014 and 2013, respectively. The reduction in the impact on expense was due to the Company’s adoption of the Employee Group Waiver Plan during 2013, as described below.
The following table shows the estimated future benefit payments without the effect of the subsidy and the amounts of the expected subsidy in future years:
	Expected U.S.
	postretirement benefit payments
In millions of	Before			Medicare			After Medicare
dolalrs	Medicare			Part D subsidy			Part D subsidy
	Part D subsidy
2015	$	73		$	—		$	73
2016	72			—			72
2017	71			—			71
2018	70			—			70
2019	68			—			68
2020—2024	319			2			317
Certain provisions of the Patient Protection and Affordable Care Act of 2010 improved the Medicare Part D option known as the Employer Group Waiver Plan (EGWP) with respect to the Medicare Part D subsidy. The EGWP provides prescription drug benefits that are more cost effective for Medicare-eligible participants and large employers. Effective April 1, 2013, the Company began sponsoring and implementing an EGWP for eligible retirees. The Company subsidy received under EGWP during 2014 and 2013 was $11.0 million and $10.5 million, respectively.
The other provisions of the Act of 2010 are not expected to have a significant impact on Citigroup’s pension and postretirement plans.
Postemployment Plans
The Company sponsors U.S. postemployment plans that provide income continuation and health and welfare benefits to certain eligible U.S. employees on long-term disability.
As of December 31, 2014 and 2013, the plans’ funded status recognized in the Company’s Consolidated Balance Sheet was $(256) million and $(252) million, respectively. The amounts recognized in Accumulated other comprehensive income (loss) as of December 31, 2014 and 2013 were $24 million and $46 million, respectively. Effective January 1, 2014, the Company made changes to its postemployment plans that limit the period for which future disabled employees are eligible for continued company subsidized medical benefits.
The following table summarizes the components of net expense recognized in the Consolidated Statement of Income for the Company’s U.S. postemployment plans.
	Net expense
In millions of dollars	2014				2013				2012
Service related expense
Service cost	$	—			$	20			$	22
Interest cost	5				10				13
Prior service cost (benefit)	(31		)		(3		)		7
Net actuarial loss	14				17				13
Total service related expense	$	(12	)		$	44			$	55
Non-service related expense (benefit)	$	37			$	(14	)		$	24
Total net expense	$	25			$	30			$	79
The following table summarizes certain assumptions used in determining the postemployment benefit obligations and net benefit expenses for the Company’s U.S. postemployment plans.
	2014	2013
Discount rate	3.45%	4.05%
Health care cost increase rate
Following year	7.50%	8.00%
Ultimate rate to which cost increase is assumed to decline	5	5
Year in which the ultimate rate is reached	2020	2020
Early Retiree Reinsurance Program
The Company participates in the Early Retiree Reinsurance Program (ERRP), which provides federal government reimbursement to eligible employers to cover a portion of the health benefit costs associated with early retirees. Of the $8 million the Company received in reimbursements, approximately $3 million and $5 million were used to reduce the health benefit costs for certain eligible employees for the years ended December 31, 2013 and 2012, respectively.
Defined Contribution Plans
The Company sponsors defined contribution plans in the U.S. and in certain non-U.S. locations, all of which are administered in accordance with local laws. The most significant defined contribution plan is the Citigroup
401(k) Plan sponsored by the Company in the U.S.
Under the Citigroup 401(k) Plan, eligible U.S. employees received matching contributions of up to 6% of their eligible compensation for 2014 and 2013, subject to statutory limits. Additionally, for eligible employees whose eligible compensation is $100,000 or less, a fixed contribution of up to 2% of eligible compensation is provided. All Company contributions are invested according to participants’ individual elections. The pretax expense associated with this plan amounted to approximately $383 million, $394 million and $384 million in 2014, 2013 and 2012, respectively.

INCOME_TAXES_INCOME_TAXES

INCOME TAXES INCOME TAXES	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES
	Details of the Company’s income tax provision for the years ended December 31 are presented in the table below:
	Income Taxes
	In millions of dollars	2014			2013			2012
	Current
	Federal	$	181		$	(260	)	$	(71	)
	Foreign	3,281			3,788			3,869
	State	388			(41		)	300
	Total current income taxes	$	3,850		$	3,487		$	4,098
	Deferred
	Federal	$	2,184		$	2,550		$	(4,943	)
	Foreign	361			(716		)	900
	State	469			546			(48		)
	Total deferred income taxes	$	3,014		$	2,380		$	(4,091	)
	Provision (benefit) for income tax on continuing operations before non-controlling interests (1)	$	6,864		$	5,867		$	7
	Provision (benefit) for income taxes on discontinued operations	12			(244		)	(52		)
	Provision (benefit) for income taxes on cumulative effect of accounting changes	—			—			(58		)
	Income tax expense (benefit) reported in stockholders’ equity related to:
	Foreign currency translation	65			(48		)	(709		)
	Investment securities	1,007			(1,300		)	369
	Employee stock plans	(87		)	28			265
	Cash flow hedges	207			625			311
	Benefit plans	(660		)	698			(390		)
	Retained earnings(2)	(353		)	—			—
	Income taxes before non-controlling interests	$	7,055		$	5,626		$	(257	)
	-1	Includes the effect of securities transactions and other-than-temporary-impairment losses resulting in a provision (benefit) of $200 million and $(148) million in 2014, $262 million and $(187) million in 2013 and $1,138 million and $(1,740) million in 2012, respectively.
	-2	See “Consolidated Statement of Changes in Stockholders’ Equity” above.
	Tax Rate
	The reconciliation of the federal statutory income tax rate to the Company’s effective income tax rate applicable to income from continuing operations (before non-controlling interests and the cumulative effect of accounting changes) for the years ended December 31 was as follows:
		2014		2013		2012
	Federal statutory rate	35	%	35	%	35	%
	State income taxes, net of federal benefit	3.5		1.7		3
	Foreign income tax rate differential	(0.9	)	(2.2	)	(4.6	)
	Audit settlements (1)	(2.4	)	(0.6	)	(11.8	)
	Effect of tax law changes(2)	1.2		(0.3	)	(0.1	)
	Nondeductible legal and related expenses	18.7		0.8		0.2
	Basis difference in affiliates	(2.5	)	—		(9.2	)
	Tax advantaged investments	(5.2	)	(4.2	)	(12.4	)
	Other, net	0.4		(0.1	)	—
	Effective income tax rate	47.8	%	30.1	%	0.1	%
	-1	For 2014, relates to the conclusion of the audit of various issues in the Company’s 2009-2011 U.S. federal tax audit and the conclusion of a New York State tax audit for 2006-2008. For 2013, relates to the settlement of U.S. federal issues for 2003-2005 at IRS appeals. For 2012, relates to the conclusion of the audit of various issues in the Company’s 2006-2008 U.S. federal tax audits and the conclusion of a New York City tax audit for 2006-2008.
	-2	For 2014, includes the results of corporate tax reforms enacted in New York and South Dakota which resulted in a DTA charge of approximately $210 million.
	As set forth in the table above, Citi’s effective tax rate for 2014 was 47.8%, which included a tax benefit of $347 million for the resolution of certain tax items during the year. This was higher than the effective tax rate for 2013 of 30.1% due primarily to the effect of the level of non-deductible legal and related expenses on the comparably lower level of pretax income in 2014. Also included in 2013 is a $127 million tax benefit related to the resolution of certain tax audit items during that year.
	In addition, as previously disclosed, during 2013, Citi decided that earnings in certain foreign subsidiaries would no longer be indefinitely reinvested outside the U.S. (as asserted under ASC 740, Income Taxes). This decision increased Citi’s 2014 and 2013 tax provisions on these foreign subsidiary earnings to the higher U.S. tax rate and thus increased Citi’s effective tax rate for 2014 and 2013 and reduced its after-tax earnings. For additional information on Citi’s foreign earnings, see “Foreign Earnings” below.
	Deferred Income Taxes
	Deferred income taxes at December 31 related to the following:
	In millions of dollars	2014			2013
	Deferred tax assets
	Credit loss deduction	$	7,010		$	8,356
	Deferred compensation and employee benefits	4,676			4,067
	Restructuring and settlement reserves	1,599			1,806
	Unremitted foreign earnings	6,368			6,910
	Investment and loan basis differences	4,979			4,409
	Cash flow hedges	529			736
	Tax credit and net operating loss carry-forwards	23,395			26,097
	Fixed assets and leases	2,093			666
	Other deferred tax assets	2,334			2,734
	Gross deferred tax assets	$	52,983		$	55,781
	Valuation allowance	—			—
	Deferred tax assets after valuation allowance	$	52,983		$	55,781
	Deferred tax liabilities
	Deferred policy acquisition costs and value of insurance in force	$	(415	)	$	(455	)
	Intangibles	(1,636		)	(1,076		)
	Debt issuances	(866		)	(811		)
Other deferred tax liabilities	(559		)	(640		)
Gross deferred tax liabilities	$	(3,476	)	$	(2,982	)
Net deferred tax assets	$	49,507		$	52,799
Unrecognized Tax Benefits
The following is a roll-forward of the Company’s unrecognized tax benefits.
In millions of dollars	2014			2013			2012
Total unrecognized tax benefits at January 1	$	1,574		$	3,109		$	3,923
Net amount of increases for current year’s tax positions	135			58			136
Gross amount of increases for prior years’ tax positions	175			251			345
Gross amount of decreases for prior years’ tax positions	(772		)	(716		)	(1,246		)
Amounts of decreases relating to settlements	(28		)	(1,115		)	(44		)
Reductions due to lapse of statutes of limitation	(30		)	(15		)	(3		)
Foreign exchange, acquisitions and dispositions	6			2			(2		)
Total unrecognized tax benefits at December 31	$	1,060		$	1,574		$	3,109
The total amounts of unrecognized tax benefits at December 31, 2014, 2013 and 2012 that, if recognized, would affect Citi’s effective tax rate, are $0.8 billion, $0.8 billion and $1.3 billion, respectively. The remaining uncertain tax positions have offsetting amounts in other jurisdictions or are temporary differences, except for $0.4 billion at December 31, 2013, which was recognized in Retained earnings in 2014.
Interest and penalties (not included in “unrecognized tax benefits” above) are a component of the Provision for income taxes.
	2014						2013						2012
In millions of dollars	Pretax			Net of tax			Pretax			Net of tax			Pretax		Net of tax
Total interest and penalties in the Consolidated Balance Sheet at January 1	$	277		$	173		$	492		$	315		$	404	$	261
Total interest and penalties in the Consolidated Statement of Income	(1		)	(1		)	(108		)	(72		)	114		71
Total interest and penalties in the Consolidated Balance Sheet at December 31 (1)	269			169			277			173			492		315
-1	Includes $2 million, $2 million, and $10 million for foreign penalties in 2014, 2013 and 2012, respectively. Also includes $3 million for state penalties in 2014, and $4 million for 2013 and 2012.
As of December 31, 2014, Citi is under audit by the Internal Revenue Service and other major taxing jurisdictions around the world. It is thus reasonably possible that significant changes in the gross balance of unrecognized tax benefits may occur within the next 12 months, although Citi does not expect such audits to result in amounts that would cause a significant change to its effective tax rate, other than as discussed below.
Citi expects to conclude its IRS audit for the 2012-2013 cycle within the next 12 months. The gross uncertain tax positions at December 31, 2014 for the items that may be resolved are as much as $120 million. Because of the number and nature of the issues remaining to be resolved, the potential tax benefit to continuing operations could be anywhere in a range between $0 to $120 million. In addition, Citi may conclude certain state and local tax audits within the next 12 months. The gross uncertain tax positions at December 31, 2014 are as much as $214 million. In addition, there is gross interest of as much as $146 million. The potential tax benefit to continuing operations could be anywhere between $0 and $230 million, including interest.
The following are the major tax jurisdictions in which the Company and its affiliates operate and the earliest tax year subject to examination:
Jurisdiction	Tax year
United States	2012
Mexico	2009
New York State and City	2006
United Kingdom	2013
India	2010
Brazil	2010
Singapore	2007
Hong Kong	2008
Ireland	2010
Foreign Earnings
Foreign pretax earnings approximated $10.1 billion in 2014, $13.1 billion in 2013 (of which $0.1 billion was in Discontinued operations) and $14.7 billion in 2012. As a U.S. corporation, Citigroup and its U.S. subsidiaries are subject to U.S. taxation on all foreign pretax earnings earned by a foreign branch. Pretax earnings of a foreign subsidiary or affiliate are subject to U.S. taxation when effectively repatriated. The Company provides income taxes on the undistributed earnings of non-U.S. subsidiaries except to the extent that such earnings are indefinitely reinvested outside the United States.
At December 31, 2014, $43.8 billion of accumulated undistributed earnings of non-U.S. subsidiaries was indefinitely invested. At the existing U.S. federal income tax rate, additional taxes (net of U.S. foreign tax credits) of $11.6 billion would have to be provided if such earnings were remitted currently. The current year’s effect on the income tax expense from continuing operations is included in the “Foreign income tax rate differential” line in the reconciliation of the federal statutory rate to the Company’s effective income tax rate in the table above.
Income taxes are not provided for the Company’s “savings bank base year bad debt reserves” that arose before 1988, because under current U.S. tax rules, such taxes will become payable only to the extent such amounts are distributed in excess of limits prescribed by federal law. At December 31, 2014, the amount of the base year reserves totaled approximately $358 million (subject to a tax of $125 million).
Deferred Tax Assets
As of December 31, 2014 and 2013, Citi had no valuation allowance on its DTAs.
In billions of dollars
Jurisdiction/component	DTAs balance December 31, 2014			DTAs balance December 31, 2013
U.S. federal (1)
Net operating losses (NOLs)(2)	$	2.3		$	1.4
Foreign tax credits (FTCs)(3)	17.6			19.6
General business credits (GBCs)	1.6			2.5
Future tax deductions and credits	21.3			21.5
Total U.S. federal	$	42.8		$	45
State and local
New York NOLs	$	1.5		$	1.4
Other state NOLs	0.4			0.5
Future tax deductions	2			2.4
Total state and local	$	3.9		$	4.3
Foreign
APB 23 subsidiary NOLs	$	0.2		$	0.2
Non-APB 23 subsidiary NOLs	0.5			1.2
Future tax deductions	2.1			2.1
Total foreign	$	2.8		$	3.5
Total	$	49.5		$	52.8
-1	Included in the net U.S. federal DTAs of $42.8 billion as of December 31, 2014 were deferred tax liabilities of $2 billion that will reverse in the relevant carry-forward period and may be used to support the DTAs.
-2	Includes $0.6 billion in both 2014 and 2013 of NOL carry-forwards related to non-consolidated tax return companies that are expected to be utilized separately from Citigroup’s consolidated tax return, and $1.7 billion and $0.8 billion of non-consolidated tax return NOL carry-forwards for 2014 and 2013, respectively, that are eventually expected to be utilized in Citigroup’s consolidated tax return.
-3	Includes $1.0 billion and $0.7 billion for 2014 and 2013, respectively, of non-consolidated tax return FTC carry-forwards that are eventually expected to be utilized in Citigroup’s consolidated tax return.
The following table summarizes the amounts of tax carry-forwards and their expiration dates as of December 31, 2014 and 2013:
In billions of dollars
Year of expiration	31-Dec-14			December 31, 2013
U.S. tax return foreign tax credit carry-forwards
2017	$	1.9		$	4.7
2018	5.2			5.2
2019	1.2			1.2
2020	3.1			3.1
2021	1.8			1.4
2022	3.4			3.3
2023(1)	1			0.7
Total U.S. tax return foreign tax credit carry-forwards	$	17.6		$	19.6
U.S. tax return general business credit carry-forwards
2028	$	—		$	0.4
2029	—			0.4
2030	0.4			0.4
2031	0.3			0.4
2032	0.4			0.5
2033	0.3			0.4
2034	0.2			—
Total U.S. tax return general business credit carry-forwards	$	1.6		$	2.5
U.S. subsidiary separate federal NOL carry-forwards
2027	$	0.2		$	0.2
2028	0.1			0.1
2030	0.3			0.3
2031	1.7			1.7
2033	1.9			1.7
2034	2.3			—
Total U.S. subsidiary separate federal NOL carry-forwards (2)	$	6.5		$	4
New York State NOL carry-forwards
2027	$	—		$	0.1
2028	—			6.5
2030	—			2
2031	—			0.1
2032	—			0.9
2033	—			—
2034	12.3			—
Total New York State NOL carry-forwards (2)	$	12.3		$	9.6
New York City NOL carry-forwards
2027	$	—		$	0.1
2028	3.8			3.9
2029	—			1.5
2031	0.1			—
2032	0.5			0.6
Total New York City NOL carry-forwards (2)	$	4.4		$	6.1
APB 23 subsidiary NOL carry-forwards
Various	$	0.2		$	0.2
Total APB 23 subsidiary NOL carry-forwards	$	0.2		$	0.2
-1	The $1.0 billion in FTC carry-forwards that expires in 2023 is in a non-consolidated tax return entity but is eventually expected to be utilized in Citigroup’s consolidated tax return.
-2	Pretax.
While Citi’s net total DTAs decreased year-over-year, the time remaining for utilization has shortened, given the passage of time, particularly with respect to the FTC component of the DTAs. Realization of the DTAs will continue to be driven by Citi’s ability to generate U.S. taxable earnings in the carry-forward periods, including through actions that optimize Citi’s U.S. taxable earnings.
Although realization is not assured, Citi believes that the realization of the recognized net DTAs of $49.5 billion at December 31, 2014 is more-likely-than-not based upon expectations as to future taxable income in the jurisdictions in which the DTAs arise and available tax planning strategies (as defined in ASC 740, Income Taxes) that would be implemented, if necessary, to prevent a carry-forward from expiring. In general, Citi would need to generate approximately $81 billion of U.S. taxable income during the FTC carry-forward periods to prevent this most time-sensitive component of Citi’s DTAs from expiring. Citi’s net DTAs will decline primarily as additional domestic GAAP taxable income is generated.
Citi has concluded that two components of positive evidence support the full realizability of its DTAs. First, Citi forecasts sufficient U.S. taxable income in the carry-forward periods, exclusive of ASC 740 tax planning strategies. Citi’s forecasted taxable income, which will continue to be subject to overall market and global economic conditions, incorporates geographic business forecasts and taxable income adjustments to those forecasts (e.g., U.S. tax-exempt income, loan loss reserves deductible for U.S. tax reporting in subsequent years), and actions intended to optimize its U.S. taxable earnings.
Second, Citi has sufficient tax planning strategies available to it under ASC 740 that would be implemented, if necessary, to prevent a carry-forward from expiring. These strategies include: repatriating low-taxed foreign source earnings for which an assertion that the earnings have been indefinitely reinvested has not been made; accelerating U.S. taxable income into, or deferring U.S. tax deductions out of, the latter years of the carry-forward period (e.g., selling appreciated assets, electing straight-line depreciation); accelerating deductible temporary differences outside the U.S.; and selling certain assets that produce tax-exempt income, while purchasing assets that produce fully taxable income. In addition, the sale or restructuring of certain businesses can produce significant U.S. taxable income within the relevant carry-forward periods.
Based upon the foregoing discussion, Citi believes the U.S. federal and New York state and city NOL carry-forward period of 20 years provides enough time to fully utilize the DTAs pertaining to the existing NOL carry-forwards and any NOL that would be created by the reversal of the future net deductions that have not yet been taken on a tax return.
The U.S. FTC carry-forward period is 10 years and represents the most time-sensitive component of Citi’s DTAs.
Utilization of FTCs in any year is restricted to 35% of foreign source taxable income in that year. However, overall domestic losses that Citi has incurred of approximately $59 billion as of December 31, 2014 are allowed to be reclassified as foreign source income to the extent of 50% of domestic source income
produced in subsequent years. Such resulting foreign source income would cover the FTCs being carried forward. As such, Citi believes the foreign source taxable income limitation will not be an impediment to the FTC carry-forward usage, as long as Citi can generate sufficient domestic taxable income within the 10-year carry-forward period.
As noted in the tables above, Citi’s FTC carry-forwards were $17.6 billion as of December 31, 2014, compared to $19.6 billion as of December 31, 2013. This decrease represented $2.0 billion of the $3.3 billion decrease in Citi’s overall DTAs during 2014. Citi believes that it will generate sufficient U.S. taxable income within the 10-year carry-forward period referenced above to be able to fully utilize the FTC carry-forward, in addition to any FTCs produced in such period, which must be used prior to any carry-forward utilization.

EARNINGS_PER_SHARE

EARNINGS PER SHARE	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE
	The following is a reconciliation of the income and share data used in the basic and diluted earnings per share (EPS) computations for the years ended December 31:
	In millions, except per-share amounts	2014			2013		2012
	Income from continuing operations before attribution of noncontrolling interests	$	7,500		$	13,630	$	7,818
	Less: Noncontrolling interests from continuing operations	185			227		219
	Net income from continuing operations (for EPS purposes)	$	7,315		$	13,403	$	7,599
	Income (loss) from discontinued operations, net of taxes	(2		)	270		(58		)
	Citigroup's net income	$	7,313		$	13,673	$	7,541
	Less: Preferred dividends(1)	511			194		26
	Net income available to common shareholders	$	6,802		$	13,479	$	7,515
	Less: Dividends and undistributed earnings allocated to employee restricted and deferred shares with nonforfeitable rights to dividends, applicable to basic EPS	111			263		166
	Net income allocated to common shareholders for basic EPS	$	6,691		$	13,216	$	7,349
	Add: Interest expense, net of tax, and dividends on convertible securities and adjustment of undistributed earnings allocated to employee restricted and deferred shares with nonforfeitable rights to dividends, applicable to diluted EPS	—			1		11
	Net income allocated to common shareholders for diluted EPS	$	6,691		$	13,217	$	7,360
	Weighted-average common shares outstanding applicable to basic EPS	3,031.60			3,035.80		2,930.60
	Effect of dilutive securities
	T-DECs(2)	—			—		84.2
	Options(3)	5.1			5.3		—
	Other employee plans	0.3			0.5		0.6
	Convertible securities(4)	—			—		0.1
	Adjusted weighted-average common shares outstanding applicable to diluted EPS	3,037.00			3,041.60		3,015.50
	Basic earnings per share(5)
	Income from continuing operations	$	2.21		$	4.27	$	2.53
	Discontinued operations	—			0.09		(0.02		)
	Net income	$	2.21		$	4.35	$	2.51
	Diluted earnings per share(5)
	Income from continuing operations	$	2.2		$	4.26	$	2.46
	Discontinued operations	—			0.09		(0.02		)
	Net income	$	2.2		$	4.35	$	2.44
	-1	See Note 21 to the Consolidated Financial Statements for the potential future impact of preferred stock dividends.
	-2	Pursuant to the terms of Citi’s previously outstanding Tangible Dividend Enhanced Common Stock Securities (T-DECs), on December 17, 2012, the Company delivered 96,337,772 shares of Citigroup common stock for the final settlement of the prepaid stock purchase contract. The impact of the T-DECs is fully reflected in the basic shares for 2013 and diluted shares for 2012.
	-3	During 2014, 2013 and 2012, weighted-average options to purchase 2.8 million, 4.8 million and 35.8 million shares of common stock, respectively, were outstanding but not included in the computation of earnings per share because the weighted-average exercise prices of $153.91, $101.11 and $54.23 respectively, were anti-dilutive.
	-4	Warrants issued to the U.S. Treasury as part of the Troubled Asset Relief Program (TARP) and the loss-sharing agreement (all of which were subsequently sold to the public in January 2011), with an exercise price of $178.50 and $106.10 for approximately 21.0 million and 25.5 million shares of Citigroup common stock, respectively. Both warrants were not included in the computation of earnings per share in 2014, 2013 and 2012 because they were anti-dilutive.
	-5	Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.

FEDERAL_FUNDS_SECURITIES_BORRO

FEDERAL FUNDS, SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS	12 Months Ended
	Dec. 31, 2014
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
FEDERAL FUNDS, SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS	FEDERAL FUNDS, SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS
	Federal funds sold and securities borrowed or purchased under agreements to resell, at their respective carrying values, consisted of the following at December 31:
	In millions of dollars	2014		2013
	Federal funds sold	$	—	$	20
	Securities purchased under agreements to resell	123,979		136,649
	Deposits paid for securities borrowed	118,591		120,368
	Total	$	242,570	$	257,037
	Federal funds purchased and securities loaned or sold under agreements to repurchase, at their respective carrying values, consisted of the following at December 31:
	In millions of dollars	2014		2013
	Federal funds purchased	$	334	$	910
	Securities sold under agreements to repurchase	147,204		175,691
	Deposits received for securities loaned	25,900		26,911
	Total	$	173,438	$	203,512
	The resale and repurchase agreements represent collateralized financing transactions. The Company executes these transactions primarily through its broker-dealer subsidiaries to facilitate customer matched-book activity and to efficiently fund a portion of the Company’s trading inventory. Transactions executed by the Company’s bank subsidiaries primarily facilitate customer financing activity.
	It is the Company’s policy to take possession of the underlying collateral, monitor its market value relative to the amounts due under the agreements and, when necessary, require prompt transfer of additional collateral in order to maintain contractual margin protection. Collateral typically consists of government and government-agency securities, corporate and municipal bonds, equities, and mortgage-backed and other asset-backed securities.
	The resale and repurchase agreements are generally documented under industry standard agreements that allow the prompt close-out of all transactions (including the liquidation of securities held) and the offsetting of obligations to return cash or securities by the non-defaulting party, following a payment default or other type of default under the relevant master agreement. Events of default generally include (i) failure to deliver cash or securities as required under the transaction, (ii) failure to provide or return cash or securities as used for margining purposes, (iii) breach of representation, (iv) cross-default to another transaction entered into among the parties, or, in some cases, their affiliates, and (v) a repudiation of obligations under the agreement. The counterparty that receives the securities in these transactions is generally unrestricted in its use of the securities, with the exception of transactions executed on a tri-party basis, where the collateral is maintained by a custodian and operational limitations may restrict its use of the securities.
	A substantial portion of the resale and repurchase agreements is recorded at fair value, as described in Note 25 to the Consolidated Financial Statements. The remaining portion is carried at the amount of cash initially advanced or received, plus accrued interest, as specified in the respective agreements.
	The securities borrowing and lending agreements also represent collateralized financing transactions similar to the resale and repurchase agreements. Collateral typically consists of government and government-agency securities and corporate debt and equity securities.
	Similar to the resale and repurchase agreements, securities borrowing and lending agreements are generally documented under industry standard agreements that allow the prompt close-out of all transactions (including the liquidation of securities held) and the offsetting of obligations to return cash or securities by the non-defaulting party, following a payment default or other default by the other party under the relevant master agreement. Events of default and rights to use securities under the securities borrowing and lending agreements are similar to the resale and repurchase agreements referenced above.
	A substantial portion of securities borrowing and lending agreements is recorded at the amount of cash advanced or received. The remaining portion is recorded at fair value as the Company elected the fair value option for certain securities borrowed and loaned portfolios, as described in Note 26 to the Consolidated Financial Statements. With respect to securities loaned, the Company receives cash collateral in an amount generally in excess of the market value of the securities loaned. The Company monitors the market value of securities borrowed and securities loaned on a daily basis and obtains or posts additional collateral in order to maintain contractual margin protection.
	The enforceability of offsetting rights incorporated in the master netting agreements for resale and repurchase agreements and securities borrowing and lending agreements is evidenced to the extent that a supportive legal opinion has been obtained from counsel of recognized standing that provides the requisite level of certainty regarding the enforceability of these agreements, and that the exercise of rights by the non-defaulting party to terminate and close-out transactions on a net basis under these agreements will not be stayed or avoided under applicable law upon an event of default including bankruptcy, insolvency or similar proceeding.
	A legal opinion may not have been sought or obtained for certain jurisdictions where local law is silent or sufficiently ambiguous to determine the enforceability of offsetting rights or where adverse case law or conflicting regulation may cast doubt on the enforceability of such rights. In some jurisdictions and for some counterparty types, the insolvency law for a particular counterparty type may be nonexistent or unclear as overlapping regimes may exist. For example, this may be the case for certain sovereigns, municipalities, central banks and U.S. pension plans.
	The following tables present the gross and net resale and repurchase agreements and securities borrowing and lending
	agreements and the related offsetting amount permitted under ASC 210-20-45, as of December 31, 2014 and December 31, 2013. The tables also include amounts related to financial instruments that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent that an event of default occurred and a legal opinion supporting enforceability of the offsetting rights has been obtained. Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.
		As of December 31, 2014
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		assets included on		not offset on the		amounts(4)
		assets		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities purchased under agreements to resell	$	180,318	$	56,339	$	123,979	$	94,353	$	29,626
	Deposits paid for securities borrowed	118,591		—		118,591		15,139		103,452
	Total	$	298,909	$	56,339	$	242,570	$	109,492	$	133,078
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		liabilities included on		not offset on the		amounts(4)
		liabilities		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities sold under agreements to repurchase	$	203,543	$	56,339	$	147,204	$	72,928	$	74,276
	Deposits received for securities loaned	25,900		—		25,900		5,190		20,710
	Total	$	229,443	$	56,339	$	173,104	$	78,118	$	94,986
		As of December 31, 2013
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		assets included on		not offset on the		amounts(4)
		assets		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities purchased under agreements to resell	$	179,894	$	43,245	$	136,649	$	105,226	$	31,423
	Deposits paid for securities borrowed	120,368		—		120,368		26,728		93,640
	Total	$	300,262	$	43,245	$	257,017	$	131,954	$	125,063
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		liabilities included on		not offset on the		amounts(4)
		liabilities		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities sold under agreements to repurchase	$	218,936	$	43,245	$	175,691	$	80,082	$	95,609
	Deposits received for securities loaned	26,911		—		26,911		3,833		23,078
	Total	$	245,847	$	43,245	$	202,602	$	83,915	$	118,687
	-1	Includes financial instruments subject to enforceable master netting agreements that are permitted to be offset under ASC 210-20-45.
	-2	The total of this column for each period excludes Federal funds sold/purchased. See table above.
-3	Includes financial instruments subject to enforceable master netting agreements that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent that an event of default has occurred and a legal opinion supporting enforceability of the offsetting right has been obtained.
-4	Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.

BROKERAGE_RECEIVABLES_AND_BROK

BROKERAGE RECEIVABLES AND BROKERAGE PAYABLES	12 Months Ended
	Dec. 31, 2014
Brokers and Dealers [Abstract]
BROKERAGE RECEIVABLES AND BROKERAGE PAYABLES	BROKERAGE RECEIVABLES AND BROKERAGE
	PAYABLES
	The Company has receivables and payables for financial instruments sold to and purchased from brokers, dealers and customers, which arise in the ordinary course of business. The Company is exposed to risk of loss from the inability of brokers, dealers or customers to pay for purchases or to deliver the financial instruments sold, in which case the Company would have to sell or purchase the financial instruments at prevailing market prices. Credit risk is reduced to the extent that an exchange or clearing organization acts as a counterparty to the transaction and replaces the broker, dealer or customer in question.
	The Company seeks to protect itself from the risks associated with customer activities by requiring customers to maintain margin collateral in compliance with regulatory and internal guidelines. Margin levels are monitored daily, and customers deposit additional collateral as required. Where customers cannot meet collateral requirements, the Company will liquidate sufficient underlying financial instruments to bring the customer into compliance with the required margin level.
	Exposure to credit risk is impacted by market volatility, which may impair the ability of clients to satisfy their obligations to the Company. Credit limits are established and closely monitored for customers and for brokers and dealers engaged in forwards, futures and other transactions deemed to be credit sensitive.
	Brokerage receivables and Brokerage payables consisted of the following at December 31:
	In millions of dollars	2014		2013
	Receivables from customers	$	10,380	$	5,811
	Receivables from brokers, dealers, and clearing organizations	18,039		19,863
	Total brokerage receivables (1)	$	28,419	$	25,674
	Payables to customers	$	33,984	$	34,751
	Payables to brokers, dealers, and clearing organizations	18,196		18,956
	Total brokerage payables (1)	$	52,180	$	53,707
	-1	Brokerage receivables and payables are accounted for in accordance with ASC 940-320.

TRADING_ACCOUNT_ASSETS_AND_LIA

TRADING ACCOUNT ASSETS AND LIABILITIES	12 Months Ended
	Dec. 31, 2014
Trading Securities [Abstract]
TRADING ACCOUNT ASSETS AND LIABILITIES	TRADING ACCOUNT ASSETS AND LIABILITIES
	Trading account assets and Trading account liabilities are carried at fair value, other than physical commodities accounted for at the lower of cost or fair value, and consist of the following at December 31, 2014 and 2013:
	In millions of dollars	2014		2013
	Trading account assets
	Mortgage-backed securities(1)
	U.S. government-sponsored agency guaranteed	$	27,053	$	23,955
	Prime	1,271		1,422
	Alt-A	709		721
	Subprime	1,382		1,211
	Non-U.S. residential	1,476		723
	Commercial	4,343		2,574
	Total mortgage-backed securities	$	36,234	$	30,606
	U.S. Treasury and federal agency securities
	U.S. Treasury	$	18,906	$	13,537
	Agency obligations	1,568		1,300
	Total U.S. Treasury and federal agency securities	$	20,474	$	14,837
	State and municipal securities	$	3,402	$	3,207
	Foreign government securities	66,274		74,856
	Corporate	26,460		30,534
	Derivatives(2)	67,957		52,821
	Equity securities	57,846		61,776
	Asset-backed securities(1)	4,546		5,616
	Other trading assets(3)	13,593		11,675
	Total trading account assets	$	296,786	$	285,928
	Trading account liabilities
	Securities sold, not yet purchased	$	70,944	$	61,508
	Derivatives(2)	68,092		47,254
	Total trading account liabilities	$	139,036	$	108,762
	-1	The Company invests in mortgage-backed and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. For mortgage-backed and asset-backed securitizations in which the Company has other involvement, see Note 22 to the Consolidated Financial Statements.
	-2	Presented net, pursuant to enforceable master netting agreements. See Note 23 to the Consolidated Financial Statements for a discussion regarding the accounting and reporting for derivatives.
	-3	Includes investments in unallocated precious metals, as discussed in Note 26 to the Consolidated Financial Statements. Also includes physical commodities accounted for at the lower of cost or fair value.

INVESTMENTS

INVESTMENTS	12 Months Ended
	Dec. 31, 2014
Investments [Abstract]
INVESTMENTS	INVESTMENTS
	Overview
		December 31,
	In millions of dollars	2014			2013
	Securities available-for-sale (AFS)	$	300,143		$	286,511
	Debt securities held-to-maturity (HTM)(1)	23,921			10,599
	Non-marketable equity securities carried at fair value(2)	2,758			4,705
	Non-marketable equity securities carried at cost(3)	6,621			7,165
	Total investments	$	333,443		$	308,980
	-1	Carried at amortized cost basis, including any impairment for securities that have credit-related impairment.
	-2	Unrealized gains and losses for non-marketable equity securities carried at fair value are recognized in earnings.
	-3	Primarily consists of shares issued by the Federal Reserve Bank, Federal Home Loan Banks, foreign central banks and various clearing houses of which Citigroup is a member.
	The following table presents interest and dividends on investments for the years ended December 31, 2014, 2013 and 2012:
	In millions of dollars	2014			2013			2012
	Taxable interest	$	6,311		$	5,750		$	6,509
	Interest exempt from U.S. federal income tax	439			732			683
	Dividends	445			437			333
	Total interest and dividends	$	7,195		$	6,919		$	7,525
	The following table presents realized gains and losses on the sale of investments for the years ended December 31, 2014, 2013 and 2012. The gross realized investment losses exclude losses from other-than-temporary impairment (OTTI):
	In millions of dollars	2014			2013			2012
	Gross realized investment gains	$	1,020		$	1,606		$	3,663
	Gross realized investment losses	(450		)	(858		)	(412		)
	Net realized gains on sale of investments	$	570		$	748		$	3,251
	The Company has sold certain debt securities that were classified as HTM. These sales were in response to significant deterioration in the creditworthiness of the issuers or securities. In addition, other securities were reclassified to AFS investments in response to significant credit deterioration or because a substantial portion of the securities’ principal outstanding at acquisition has been collected. Because the Company generally intends to sell the securities, Citi recorded OTTI on the securities. The following table sets forth, for the periods indicated, gain (loss) on HTM securities sold, securities reclassified to AFS and OTTI recorded on AFS securities reclassified.
	In millions of dollars	2014			2013			2012
	Carrying value of HTM securities sold	$	8		$	935		$	2,110
	Net realized gain (loss) on sale of HTM securities	—			(128		)	(187		)
	Carrying value of securities reclassified to AFS	889			989			244
	OTTI losses on securities reclassified to AFS	(25		)	(156		)	(59		)
	Securities Available-for-Sale
	The amortized cost and fair value of AFS securities at December 31, 2014 and 2013 were as follows:
		2014												2013
	In millions of dollars	Amortized			Gross			Gross			Fair			Amortized			Gross		Gross		Fair
		cost			unrealized			unrealized			value			cost			unrealized		unrealized		value
					gains(1)			losses(1)									gains(1)		losses(1)
	Debt securities AFS
	Mortgage-backed securities(2)
	U.S. government-sponsored agency guaranteed	$	35,647		$	603		$	159		$	36,091		$	42,494		$	391	$	888	$	41,997
	Prime	12			—			—			12			33			2		3		32
	Alt-A	43			1			—			44			84			10		—		94
	Subprime	—			—			—			—			12			—		—		12
	Non-U.S. residential	8,247			67			7			8,307			9,976			95		4		10,067
	Commercial	551			6			3			554			455			6		8		453
	Total mortgage-backed securities	$	44,500		$	677		$	169		$	45,008		$	53,054		$	504	$	903	$	52,655
	U.S. Treasury and federal agency securities
	U.S. Treasury	$	110,492		$	353		$	127		$	110,718		$	68,891		$	476	$	147	$	69,220
	Agency obligations	12,925			60			13			12,972			18,320			123		67		18,376
	Total U.S. Treasury and federal agency securities	$	123,417		$	413		$	140		$	123,690		$	87,211		$	599	$	214	$	87,596
	State and municipal(3)	$	13,526		$	150		$	977		$	12,699		$	20,761		$	184	$	2,005	$	18,940
	Foreign government	90,249			734			286			90,697			96,608			403		540		96,471
	Corporate	12,033			215			91			12,157			11,039			210		119		11,130
	Asset-backed securities(2)	12,534			30			58			12,506			15,352			42		120		15,274
	Other debt securities	661			—			—			661			710			1		—		711
	Total debt securities AFS	$	296,920		$	2,219		$	1,721		$	297,418		$	284,735		$	1,943	$	3,901	$	282,777
	Marketable equity securities AFS	$	2,461		$	308		$	44		$	2,725		$	3,832		$	85	$	183	$	3,734
	Total securities AFS	$	299,381		$	2,527		$	1,765		$	300,143		$	288,567		$	2,028	$	4,084	$	286,511
	-1	Gross unrealized gains and losses, as presented, do not include the impact of minority investments and the related allocations and pick-up of unrealized gains and losses of AFS securities. These amounts totaled unrealized gains of $27 million and $36 million as of December 31, 2014 and 2013, respectively.
	-2	The Company invests in mortgage-backed and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. For mortgage-backed and asset-backed securitizations in which the Company has other involvement, see Note 22 to the Consolidated Financial Statements.
	-3	The gross unrealized losses on state and municipal debt securities are primarily attributable to the effects of fair value hedge accounting.  Specifically, Citi hedges the LIBOR-benchmark interest rate component of certain fixed-rate tax-exempt state and municipal debt securities utilizing LIBOR-based interest rate swaps. During the hedge period, losses incurred on the LIBOR-hedging swaps recorded in earnings were substantially offset by gains on the state and municipal debt securities attributable to changes in the LIBOR swap rate being hedged.  However, because the LIBOR swap rate decreased significantly during the hedge period while the overall fair value of the municipal debt securities was relatively unchanged, the effect of reclassifying fair value gains on these securities from Accumulated other comprehensive income (loss) (AOCI) to earnings, attributable solely to changes in the LIBOR swap rate, resulted in net unrealized losses remaining in AOCI that relate to the unhedged components of these securities.
	At December 31, 2014, the amortized cost of approximately 7,600 investments in equity and fixed income securities exceeded their fair value by $1,765 million. Of the $1,765 million, the gross unrealized losses on equity securities were $44 million. Of the remainder, $400 million represented unrealized losses on fixed income investments that have been in a gross-unrealized-loss position for less than a year and, of these, 92% were rated investment grade; $1,321 million represented unrealized losses on fixed income investments that have been in a gross-unrealized-loss position for a year or more and, of these, 95% were rated investment grade.
	At December 31, 2014, the AFS mortgage-backed securities portfolio fair value balance of $45,008 million consisted of $36,091 million of government-sponsored agency securities, and $8,917 million of privately sponsored securities, substantially all of which were backed by non-U.S. residential mortgages.
	As discussed in more detail below, the Company conducts periodic reviews of all securities with unrealized losses to evaluate whether the impairment is other-than-temporary. Any credit-related impairment related to debt securities is recorded in earnings as OTTI. Non-credit-related impairment is recognized in AOCI if the Company does not plan to sell and is not likely to be required to sell. For other debt securities with OTTI, the entire impairment is recognized in the Consolidated Statement of Income.
	The table below shows the fair value of AFS securities that have been in an unrealized loss position for less than 12 months or for 12 months or longer as of December 31, 2014 and 2013:
		Less than 12 months						12 months or longer						Total
In millions of dollars	Fair			Gross			Fair			Gross			Fair			Gross
	value			unrealized			value			unrealized			value			unrealized
				losses						losses						losses
31-Dec-14
Securities AFS
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	4,198		$	30		$	5,547		$	129		$	9,745		$	159
Prime	5			—			2			—			7			—
Non-U.S. residential	1,276			3			199			4			1,475			7
Commercial	124			1			136			2			260			3
Total mortgage-backed securities	$	5,603		$	34		$	5,884		$	135		$	11,487		$	169
U.S. Treasury and federal agency securities
U.S. Treasury	$	36,581		$	119		$	1,013		$	8		$	37,594		$	127
Agency obligations	5,698			9			754			4			6,452			13
Total U.S. Treasury and federal agency securities	$	42,279		$	128		$	1,767		$	12		$	44,046		$	140
State and municipal	$	386		$	15		$	5,802		$	962		$	6,188		$	977
Foreign government	18,495			147			5,984			139			24,479			286
Corporate	3,511			63			1,350			28			4,861			91
Asset-backed securities	3,701			13			3,816			45			7,517			58
Marketable equity securities AFS	51			4			218			40			269			44
Total securities AFS	$	74,026		$	404		$	24,821		$	1,361		$	98,847		$	1,765
31-Dec-13
Securities AFS
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	19,377		$	533		$	5,643		$	355		$	25,020		$	888
Prime	85			3			3			—			88			3
Non-U.S. residential	2,103			4			5			—			2,108			4
Commercial	206			6			28			2			234			8
Total mortgage-backed securities	$	21,771		$	546		$	5,679		$	357		$	27,450		$	903
U.S. Treasury and federal agency securities
U.S. Treasury	$	34,780		$	133		$	268		$	14		$	35,048		$	147
Agency obligations	6,692			66			101			1			6,793			67
Total U.S. Treasury and federal agency securities	$	41,472		$	199		$	369		$	15		$	41,841		$	214
State and municipal	$	595		$	29		$	11,447		$	1,976		$	12,042		$	2,005
Foreign government	35,783			477			5,778			63			41,561			540
Corporate	4,565			108			387			11			4,952			119
Asset-backed securities	11,207			57			1,931			63			13,138			120
Marketable equity securities AFS	1,271			92			806			91			2,077			183
Total securities AFS	$	116,664		$	1,508		$	26,397		$	2,576		$	143,061		$	4,084
The following table presents the amortized cost and fair value of AFS debt securities by contractual maturity dates as of December 31, 2014 and 2013:
	2014						2013
In millions of dollars	Amortized			Fair			Amortized			Fair
	cost			value			cost			value
Mortgage-backed securities(1)
Due within 1 year	$	44		$	44		$	87		$	87
After 1 but within 5 years	931			935			346			354
After 5 but within 10 years	1,362			1,387			2,898			2,932
After 10 years(2)	42,163			42,642			49,723			49,282
Total	$	44,500		$	45,008		$	53,054		$	52,655
U.S. Treasury and federal agency securities
Due within 1 year	$	13,070		$	13,084		$	15,789		$	15,853
After 1 but within 5 years	104,982			105,131			66,232			66,457
After 5 but within 10 years	2,286			2,325			2,129			2,185
After 10 years(2)	3,079			3,150			3,061			3,101
Total	$	123,417		$	123,690		$	87,211		$	87,596
State and municipal
Due within 1 year	$	590		$	590		$	576		$	581
After 1 but within 5 years	3,672			3,677			3,731			3,735
After 5 but within 10 years	532			546			439			482
After 10 years(2)	8,732			7,886			16,015			14,142
Total	$	13,526		$	12,699		$	20,761		$	18,940
Foreign government
Due within 1 year	$	31,355		$	31,382		$	37,005		$	36,959
After 1 but within 5 years	41,913			42,467			51,344			51,304
After 5 but within 10 years	16,008			15,779			7,314			7,216
After 10 years(2)	973			1,069			945			992
Total	$	90,249		$	90,697		$	96,608		$	96,471
All other(3)
Due within 1 year	$	1,248		$	1,251		$	2,786		$	2,733
After 1 but within 5 years	10,442			10,535			10,934			11,020
After 5 but within 10 years	7,282			7,318			5,632			5,641
After 10 years(2)	6,256			6,220			7,749			7,721
Total	$	25,228		$	25,324		$	27,101		$	27,115
Total debt securities AFS	$	296,920		$	297,418		$	284,735		$	282,777
-1	Includes mortgage-backed securities of U.S. government-sponsored agencies.
-2	Investments with no stated maturities are included as contractual maturities of greater than 10 years. Actual maturities may differ due to call or prepayment rights.
-3	Includes corporate, asset-backed and other debt securities.
Debt Securities Held-to-Maturity
The carrying value and fair value of debt securities HTM at December 31, 2014 and 2013 were as follows:
In millions of dollars	Amortized			Net unrealized gains			Carrying			Gross			Gross			Fair
	cost basis(1)			(losses)			value(2)			unrealized			unrealized			value
				recognized in						gains			(losses)
				AOCI
31-Dec-14
Debt securities held-to-maturity
Mortgage-backed securities(3)
U.S. government agency guaranteed	$	8,795		$	95		$	8,890		$	106		$	(6	)	$	8,990
Prime	60			(12		)	48			6			(1		)	53
Alt-A	1,125			(213		)	912			537			(287		)	1,162
Subprime	6			(1		)	5			15			—			20
Non-U.S. residential	983			(137		)	846			92			—			938
Commercial	8			—			8			1			—			9
Total mortgage-backed securities	$	10,977		$	(268	)	$	10,709		$	757		$	(294	)	$	11,172
State and municipal(4)	$	8,443		$	(494	)	$	7,949		$	227		$	(57	)	$	8,119
Foreign government	4,725			—			4,725			77			—			4,802
Corporate	—			—			—			—			—			—
Asset-backed securities(3)	556			(18		)	538			50			(10		)	578
Total debt securities held-to-maturity (5)	$	24,701		$	(780	)	$	23,921		$	1,111		$	(361	)	$	24,671
31-Dec-13
Debt securities held-to-maturity
Mortgage-backed securities(3)
Prime	$	72		$	(16	)	$	56		$	5		$	(2	)	$	59
Alt-A	1,379			(287		)	1,092			449			(263		)	1,278
Subprime	2			—			2			1			—			3
Non-U.S. residential	1,372			(206		)	1,166			60			(20		)	1,206
Commercial	10			—			10			1			—			11
Total mortgage-backed securities	$	2,835		$	(509	)	$	2,326		$	516		$	(285	)	$	2,557
State and municipal	$	1,394		$	(62	)	$	1,332		$	50		$	(70	)	$	1,312
Foreign government	5,628			—			5,628			70			(10		)	5,688
Corporate	818			(78		)	740			111			—			851
Asset-backed securities(3)	599			(26		)	573			22			(10		)	585
Total debt securities held-to-maturity	$	11,274		$	(675	)	$	10,599		$	769		$	(375	)	$	10,993
-1	For securities transferred to HTM from Trading account assets, amortized cost basis is defined as the fair value of the securities at the date of transfer plus any accretion income and less any impairments recognized in earnings subsequent to transfer. For securities transferred to HTM from AFS, amortized cost is defined as the original purchase cost, adjusted for the cumulative accretion or amortization of any purchase discount or premium, plus or minus any cumulative fair value hedge adjustments, net of accretion or amortization, and less any other-than-temporary impairment recognized in earnings.
-2	HTM securities are carried on the Consolidated Balance Sheet at amortized cost basis, plus or minus any unamortized unrealized gains and losses and fair value hedge adjustments recognized in AOCI prior to reclassifying the securities from AFS to HTM. Changes in the values of these securities are not reported in the financial statements, except for the amortization of any difference between the carrying value at the transfer date and par value of the securities, and the recognition of any non-credit fair value adjustments in AOCI in connection with the recognition of any credit impairment in earnings related to securities the Company continues to intend to hold until maturity.
-3	The Company invests in mortgage-backed and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. For mortgage-backed and asset-backed securitizations in which the Company has other involvement, see Note 22 to the Consolidated Financial Statements.
-4	The net unrealized losses recognized in AOCI on state and municipal debt securities are primarily attributable to the effects of fair value hedge accounting applied when these debt securities were classified as AFS. Specifically, Citi hedged the LIBOR-benchmark interest rate component of certain fixed-rate tax-exempt state and municipal debt securities utilizing LIBOR-based interest rate swaps. During the hedge period, losses incurred on the LIBOR-hedging swaps recorded in earnings were substantially offset by gains on the state and municipal debt securities attributable to changes in the LIBOR swap rate being hedged. However, because the LIBOR swap rate decreased significantly during the hedge period while the overall fair value of the municipal debt securities was relatively unchanged, the effect of reclassifying fair value gains on these securities from AOCI to earnings attributable solely to changes in the LIBOR swap rate resulted in net unrealized losses remaining in AOCI that relate to the unhedged components of these securities. Upon transfer of these debt securities to HTM, all hedges have been de-designated and hedge accounting has ceased.
-5	During the second quarter of 2014, securities with a total fair value of approximately $11.8 billion were transferred from AFS to HTM and comprised $5.4 billion of U.S. government agency mortgage-backed securities and $6.4 billion of obligations of U.S. states and municipalities. The transfer reflects the Company’s intent to hold these securities to maturity or to issuer call in order to reduce the impact of price volatility on AOCI and certain capital measures under Basel III. While these securities were transferred to HTM at fair value as of the transfer date, no subsequent changes in value may be recorded, other than in connection with the recognition of any subsequent other-than-temporary impairment and the amortization of differences between the carrying values at the transfer date and the par values of each security as an adjustment of yield over the remaining contractual life of each security. Any net unrealized holding losses within AOCI related to the respective securities at the date of transfer, inclusive of any cumulative fair value hedge adjustments, will be amortized over the remaining contractual life of each security as an adjustment of yield in a manner consistent with the amortization of any premium or discount.
The Company has the positive intent and ability to hold these securities to maturity or, where applicable, the exercise of any issuer call options, absent any unforeseen significant changes in circumstances, including deterioration in credit or changes in regulatory capital requirements.
The net unrealized losses classified in AOCI primarily relate to debt securities previously classified as AFS that have been transferred to HTM, and include any cumulative fair
value hedge adjustments. The net unrealized loss amount also includes any non-credit-related changes in fair value of HTM securities that have suffered credit impairment recorded in earnings. The AOCI balance related to HTM securities is amortized over the remaining contractual life of the related securities as an adjustment of yield in a manner consistent with the accretion of any difference between the carrying value at the transfer date and par value of the same debt securities. The table below shows the fair value of debt securities in HTM that have been in an unrecognized loss position as of December 31, 2014 and 2013 for less than 12 months and for 12 months or longer:
	Less than 12 months						12 months or longer						Total
In millions of dollars	Fair			Gross			Fair			Gross			Fair			Gross
	value			unrecognized			value			unrecognized			value			unrecognized
				losses						losses						losses
31-Dec-14
Debt securities held-to-maturity
Mortgage-backed securities	$	4		$	—		$	1,134		$	294		$	1,138		$	294
State and municipal	2,528			34			314			23			2,842			57
Foreign government	—			—			—			—			—			—
Asset-backed securities	9			1			174			9			183			10
Total debt securities held-to-maturity	$	2,541		$	35		$	1,622		$	326		$	4,163		$	361
31-Dec-13
Debt securities held-to-maturity
Mortgage-backed securities	$	—		$	—		$	358		$	285		$	358		$	285
State and municipal	235			20			302			50			537			70
Foreign government	920			10			—			—			920			10
Asset-backed securities	98			6			198			4			296			10
Total debt securities held-to-maturity	$	1,253		$	36		$	858		$	339		$	2,111		$	375
Excluded from the gross unrecognized losses presented in the above table are $(780) million and $(675) million of net unrealized losses recorded in AOCI as of December 31, 2014 and 2013 respectively, primarily related to the difference between the amortized cost and carrying value of HTM securities that were reclassified from AFS. Substantially all of these net unrecognized losses relate to securities that have been in a loss position for 12 months or longer at December 31, 2014 and 2013.
The following table presents the carrying value and fair value of HTM debt securities by contractual maturity dates as of December 31, 2014 and 2013:
	2014						2013
In millions of dollars	Carrying value			Fair value			Carrying value			Fair value
Mortgage-backed securities
Due within 1 year	$	—		$	—		$	—		$	—
After 1 but within 5 years	—			—			—			—
After 5 but within 10 years	863			869			10			11
After 10 years(1)	9,846			10,303			2,316			2,546
Total	$	10,709		$	11,172		$	2,326		$	2,557
State and municipal
Due within 1 year	$	36		$	38		$	8		$	9
After 1 but within 5 years	24			24			17			17
After 5 but within 10 years	144			148			69			72
After 10 years(1)	7,745			7,909			1,238			1,214
Total	$	7,949		$	8,119		$	1,332		$	1,312
Foreign government
Due within 1 year	$	—		$	—		$	—		$	—
After 1 but within 5 years	4,725			4,802			5,628			5,688
After 5 but within 10 years	—			—			—			—
After 10 years(1)	—			—			—			—
Total	$	4,725		$	4,802		$	5,628		$	5,688
All other(2)
Due within 1 year	$	—		$	—		$	—		$	—
After 1 but within 5 years	—			—			740			851
After 5 but within 10 years	—			—			—			—
After 10 years(1)	538			578			573			585
Total	$	538		$	578		$	1,313		$	1,436
Total debt securities held-to-maturity	$	23,921		$	24,671		$	10,599		$	10,993
-1	Investments with no stated maturities are included as contractual maturities of greater than 10 years. Actual maturities may differ due to call or prepayment rights.
-2	Includes corporate and asset-backed securities.
Evaluating Investments for Other-Than-Temporary Impairment
Overview
The Company conducts periodic reviews of all securities with unrealized losses to evaluate whether the impairment is other-than-temporary.
An unrealized loss exists when the current fair value of an individual security is less than its amortized cost basis. Unrealized losses that are determined to be temporary in nature are recorded, net of tax, in AOCI for AFS securities. Losses related to HTM securities generally are not recorded, as these investments are carried at amortized cost basis. However, for HTM securities with credit-related losses, the credit loss is recognized in earnings as OTTI and any difference between the cost basis adjusted for the OTTI and fair value is recognized in AOCI and amortized as an adjustment of yield over the remaining contractual life of the security. For securities transferred to HTM from Trading account assets, amortized cost is defined as the fair value of the securities at the date of transfer, plus any accretion income and less any impairment recognized in earnings subsequent to transfer. For securities transferred to HTM from AFS, amortized cost is defined as the original purchase cost, adjusted for the cumulative accretion or amortization of any purchase discount or premium, plus or minus any cumulative fair value hedge adjustments, net of accretion or amortization, and less any impairment recognized in earnings.
Regardless of the classification of the securities as AFS or HTM, the Company assesses each position with an unrealized loss for OTTI. Factors considered in determining whether a loss is temporary include:
•	the length of time and the extent to which fair value has been below cost;
•	the severity of the impairment;
•	the cause of the impairment and the financial condition and near-term prospects of the issuer;
•	activity in the market of the issuer that may indicate adverse credit conditions; and
•	the Company’s ability and intent to hold the investment for a period of time sufficient to allow for any anticipated recovery.
The Company’s review for impairment generally entails:
•	identification and evaluation of impaired investments;
•	analysis of individual investments that have fair values less than amortized cost, including consideration of the length of time the investment has been in an unrealized loss position and the expected recovery period;
•	consideration of evidential matter, including an evaluation of factors or triggers that could cause individual investments to qualify as having other-than-temporary impairment and those that would not support other-than-temporary impairment; and
•	documentation of the results of these analyses, as required under business policies.
Debt
The entire difference between amortized cost basis and fair value is recognized in earnings as OTTI for impaired debt securities that the Company has an intent to sell or for which the Company believes it will more-likely-than-not be required to sell prior to recovery of the amortized cost basis. However, for those securities that the Company does not intend to sell and is not likely to be required to sell, only the credit-related impairment is recognized in earnings and any non-credit-related impairment is recorded in AOCI.
For debt securities, credit impairment exists where management does not expect to receive contractual principal and interest cash flows sufficient to recover the entire amortized cost basis of a security.
Equity
For equity securities, management considers the various factors described above, including its intent and ability to hold the equity security for a period of time sufficient for recovery to cost or whether it is more-likely-than-not that the Company will be required to sell the security prior to recovery of its cost basis. Where management lacks that intent or ability, the security’s decline in fair value is deemed to be other-than-temporary and is recorded in earnings. AFS equity securities deemed to be other-than-temporarily impaired are written down to fair value, with the full difference between fair value and cost recognized in earnings.
Management assesses equity method investments that have fair values that are less than their respective carrying values for OTTI. Fair value is measured as price multiplied by quantity if the investee has publicly listed securities. If the investee is not publicly listed, other methods are used (see Note 25 to the Consolidated Financial Statements).
For impaired equity method investments that Citi plans to sell prior to recovery of value or would likely be required to sell, with no expectation that the fair value will recover prior to the expected sale date, the full impairment is recognized in earnings as OTTI regardless of severity and duration. The measurement of the OTTI does not include partial projected recoveries subsequent to the balance sheet date.
For impaired equity method investments that management does not plan to sell and is not likely to be required to sell prior to recovery of value, the evaluation of whether an impairment is other-than-temporary is based on (i) whether and when an equity method investment will recover in value and (ii) whether the investor has the intent and ability to hold that investment for a period of time sufficient to recover the value. The determination of whether the impairment is considered other-than-temporary considers the following indicators, regardless of the time and extent of impairment:
•	the cause of the impairment and the financial condition and near-term prospects of the issuer, including any specific events that may influence the operations of the issuer;
•	the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value; and
•	the length of time and extent to which fair value has been less than the carrying value.
The sections below describe the Company’s process for identifying credit-related impairments for security types that have the most significant unrealized losses as of December 31, 2014.
Akbank
As of December 31, 2014, Citi’s remaining 9.9% stake in Akbank T.A.S., an equity investment in Turkey (Akbank), is recorded within marketable equity securities available-for-sale. The revaluation of the Turkish lira was hedged, so the change in the value of the currency related to Akbank investment did not have a significant impact on earnings during the year.
Mortgage-backed securities
For U.S. mortgage-backed securities (and in particular for Alt-A and other mortgage-backed securities that have significant unrealized losses as a percentage of amortized cost), credit impairment is assessed using a cash flow model that estimates the principal and interest cash flows on the underlying mortgages using the security-specific collateral and transaction structure. The model distributes the estimated cash flows to the various tranches of securities, considering the transaction structure and any subordination and credit enhancements that exist in that structure. The cash flow model incorporates actual cash flows on the mortgage-backed securities through the current period and then estimates the remaining cash flows using a number of assumptions, including default rates, prepayment rates, recovery rates (on foreclosed properties) and loss severity rates (on non-agency mortgage-backed securities).
Management develops specific assumptions using market data, internal estimates and estimates published by rating agencies and other third-party sources. Default rates are projected by considering current underlying mortgage loan performance, generally assuming the default of (i) 10% of current loans, (ii) 25% of 30-59 day delinquent loans, (iii) 70% of 60-90 day delinquent loans and (iv) 100% of 91+ day delinquent loans. These estimates are extrapolated along a default timing curve to estimate the total lifetime pool default rate. Other assumptions contemplate the actual collateral attributes, including geographic concentrations, rating actions and current market prices.
Cash flow projections are developed using different stress test scenarios. Management evaluates the results of those stress tests (including the severity of any cash shortfall indicated and the likelihood of the stress scenarios actually occurring based on the underlying pool’s characteristics and performance) to assess whether management expects to recover the amortized cost basis of the security. If cash flow projections indicate that the Company does not expect to recover its amortized cost basis, the Company recognizes the estimated credit loss in earnings.
State and municipal securities
The process for identifying credit impairments in Citigroup’s AFS and HTM state and municipal bonds is primarily based on a credit analysis that incorporates third-party credit ratings.  Citigroup monitors the bond issuers and any insurers providing default protection in the form of financial guarantee insurance.  The average external credit rating, ignoring any insurance, is Aa3/AA-.  In the event of an external rating downgrade or other indicator of credit impairment (i.e., based on instrument-specific estimates of cash flows or probability of issuer default), the subject bond is specifically reviewed for adverse changes in the amount or timing of expected contractual principal and interest payments.
For state and municipal bonds with unrealized losses that Citigroup plans to sell (for AFS only), would likely be required to sell (for AFS only) or will be subject to an issuer call deemed probable of exercise prior to the expected recovery of its amortized cost basis (for AFS and HTM), the full impairment is recognized in earnings.
Recognition and Measurement of OTTI
The following table presents the total OTTI recognized in earnings for the year ended December 31, 2014:
OTTI on Investments and Other Assets	Year ended December 31, 2014
In millions of dollars	AFS(1)			HTM			Other			Total
							Assets
Impairment losses related to securities that the Company does not intend to sell nor will likely be required to sell:
Total OTTI losses recognized during the period	$	21		$	5		$	—		$	26
Less: portion of impairment loss recognized in AOCI (before taxes)	8			—			—			8
Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	$	13		$	5		$	—		$	18
Impairment losses recognized in earnings for securities that the Company intends to sell or more-likely-than-not will be required to sell before recovery	380			26			—			406
Total impairment losses recognized in earnings	$	393		$	31		$	—		$	424
-1	Includes OTTI on non-marketable equity securities.
The following table presents the total OTTI recognized in earnings for the year ended December 31, 2013:
OTTI on Investments and Other Assets	Year ended December 31, 2013
In millions of dollars	AFS(1)			HTM			Other			Total
							Assets (2)
Impairment losses related to securities that the Company does not intend to sell nor will likely be required to sell:
Total OTTI losses recognized during the period	$	9		$	154		$	—		$	163
Less: portion of impairment loss recognized in AOCI (before taxes)	—			98			—			98
Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	$	9		$	56		$	—		$	65
Impairment losses recognized in earnings for securities that the Company intends to sell or more-likely-than-not will be required to sell before recovery (2)	269			—			201			470
Total impairment losses recognized in earnings	$	278		$	56		$	201		$	535
-1	Includes OTTI on non-marketable equity securities.
-2	The impairment charge relates to the carrying value of Citi’s then-remaining 35% interest in the Morgan Stanley Smith Barney joint venture (MSSB), offset by the equity pickup from MSSB during the respective periods that was recorded in Other revenue.
The following is a 12-month roll-forward of the credit-related impairments recognized in earnings for AFS and HTM debt securities held as of December 31, 2014 that the Company does not intend to sell nor likely will be required to sell:
	Cumulative OTTI credit losses recognized in earnings on securities still held
In millions of dollars	Dec. 31, 2013 balance			Credit			Credit			Reductions due to			Dec. 31, 2014 balance
				impairments			impairments			credit-impaired
				recognized in			recognized in			securities sold,
				earnings on			earnings on			transferred or
				securities not			securities that			matured
				previously			have
				impaired			been previously
							impaired
AFS debt securities
Mortgage-backed securities	$	295		$	—		$	—		$	—		$	295
Foreign government securities	171			—			—			—			171
Corporate	113			8			—			(3		)	118
All other debt securities	144			5			—			—			149
Total OTTI credit losses recognized for AFS debt securities	$	723		$	13		$	—		$	(3	)	$	733
HTM debt securities
Mortgage-backed securities(1)	$	678		$	5		$	—		$	(13	)	$	670
Corporate	56			—			—			(56		)	—
All other debt securities	133			—			—			—			133
Total OTTI credit losses recognized for HTM debt securities	$	867		$	5		$	—		$	(69	)	$	803
-1	Primarily consists of Alt-A securities.
Investments in Alternative Investment Funds That Calculate Net Asset Value per Share
The Company holds investments in certain alternative investment funds that calculate net asset value (NAV) per share, including hedge funds, private equity funds, funds of funds and real estate funds. The Company’s investments include co-investments in funds that are managed by the Company and investments in funds that are managed by third parties. Investments in funds are generally classified as non-marketable equity securities carried at fair value. The fair values of these investments are estimated using the NAV per share of the Company’s ownership interest in the funds, where it is not probable that the Company will sell an investment at a price other than the NAV.
	Fair value						Unfunded						Redemption frequency	Redemption notice
							commitments						(if currently eligible)	period
													monthly, quarterly, annually
In millions of dollars	2014			2013			2014			2013
Hedge funds	$	8		$	751		$	—		$	—		Generally quarterly	10-95 days
Private equity funds(1)(2)	796			794			205			170			—	—
Real estate funds (2)(3)	166			294			24			36			—	—
Total(4)	$	970		$	1,839		$	229		$	206		—	—
-1	Private equity funds include funds that invest in infrastructure, leveraged buyout transactions, emerging markets and venture capital.
-2	With respect to the Company’s investments in private equity funds and real estate funds, distributions from each fund will be received as the underlying assets held by these funds are liquidated. It is estimated that the underlying assets of these funds will be liquidated over a period of several years as market conditions allow. Private equity and real estate funds do not allow redemption of investments by their investors. Investors are permitted to sell or transfer their investments, subject to the approval of the general partner or investment manager of these funds, which generally may not be unreasonably withheld.
-3	Includes several real estate funds that invest primarily in commercial real estate in the U.S., Europe and Asia.
-4	Included in the total fair value of investments above are $0.8 billion and $1.6 billion of fund assets that are valued using NAVs provided by third-party asset managers as of December 31, 2014 and December 31, 2013, respectively.

LOANS

LOANS	12 Months Ended
	Dec. 31, 2014
Loans and Leases Receivable Disclosure [Abstract]
LOANS	LOANS
	Citigroup loans are reported in two categories—consumer and corporate. These categories are classified primarily according to the segment and subsegment that manage the loans.
	Consumer Loans
	Consumer loans represent loans and leases managed primarily by the Global Consumer Banking businesses in Citicorp and in Citi Holdings. The following table provides information by loan type for the periods indicated:
	In millions of dollars	2014			2013
	Consumer loans
	In U.S. offices
	Mortgage and real estate(1)	$	96,533		$	108,453
	Installment, revolving credit, and other	14,450			13,398
	Cards	112,982			115,651
	Commercial and industrial	5,895			6,592
		$	229,860		$	244,094
	In offices outside the U.S.
	Mortgage and real estate(1)	$	54,462		$	55,511
	Installment, revolving credit, and other	31,128			33,182
	Cards	32,032			36,740
	Commercial and industrial	22,561			24,107
	Lease financing	609			769
		$	140,792		$	150,309
	Total Consumer loans	$	370,652		$	394,403
	Net unearned income	(682		)	(572		)
	Consumer loans, net of unearned income	$	369,970		$	393,831
	-1	Loans secured primarily by real estate.
	Citigroup has established a risk management process to monitor, evaluate and manage the principal risks associated with its consumer loan portfolio. Credit quality indicators that are actively monitored include delinquency status, consumer credit scores (FICO), and loan to value (LTV) ratios, each as discussed in more detail below.
	Included in the loan table above are lending products whose terms may give rise to greater credit issues. Credit cards with below-market introductory interest rates and interest-only loans are examples of such products. These products are closely managed using credit techniques that are intended to mitigate their higher inherent risk.
	During the years ended December 31, 2014 and 2013, the Company sold and/or reclassified to held-for-sale $7.9 billion and $11.5 billion, respectively, of consumer loans. The Company did not have significant purchases of consumer loans during the year ended December 31, 2014. During the year ended December 31, 2013, Citi also acquired approximately $7 billion of loans related to the acquisition of Best Buy’s U.S. credit card portfolio.
	Delinquency Status
	Delinquency status is monitored and considered a key indicator of credit quality of consumer loans. Principally the U.S. residential first mortgage loans use the Mortgage Banking Association (MBA) method of reporting delinquencies, which considers a loan delinquent if a monthly payment has not been received by the end of the day immediately preceding the loan’s next due date. All other loans use a method of reporting delinquencies, which considers a loan delinquent if a monthly payment has not been received by the close of business on the loan’s next due date.
	As a general policy, residential first mortgages, home equity loans and installment loans are classified as non-accrual when loan payments are 90 days contractually past due. Credit cards and unsecured revolving loans generally accrue interest until payments are 180 days past due. Home equity loans in regulated bank entities are classified as non-accrual if the related residential first mortgage is 90 days or more past due. Mortgage loans in regulated bank entities discharged through Chapter 7 bankruptcy, other than Federal Housing Administration (FHA)-insured loans, are classified as non-accrual. Commercial market loans are placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due.
	The policy for re-aging modified U.S. consumer loans to current status varies by product. Generally, one of the conditions to qualify for these modifications is that a minimum number of payments (typically ranging from one to three) be made. Upon modification, the loan is re-aged to current status. However, re-aging practices for certain open-ended consumer loans, such as credit cards, are governed by Federal Financial Institutions Examination Council (FFIEC) guidelines. For open-ended consumer loans subject to FFIEC guidelines, one of the conditions for the loan to be re-aged to current status is that at least three consecutive minimum monthly payments, or the equivalent amount, must be received. In addition, under FFIEC guidelines, the number of times that such a loan can be re-aged is subject to limitations (generally once in 12 months and twice in five years). Furthermore, FHA and Department of Veterans Affairs (VA) loans are modified under those respective agencies’ guidelines and payments are not always required in order to re-age a modified loan to current.
	The following tables provide details on Citigroup’s consumer loan delinquency and non-accrual loans as of December 31, 2014 and December 31, 2013:
	Consumer Loan Delinquency and Non-Accrual Details at December 31, 2014
	In millions of dollars	Total			30-89 days			≥ 90 days			Past due			Total			Total		90 days past due
		current(1)(2)			past due(3)			past due(3)			government			loans(2)			non-accrual		and accruing
											guaranteed(4)
	In North America offices
	Residential first mortgages	$	61,730		$	1,280		$	1,371		$	3,443		$	67,824		$	2,746	$	2,759
	Home equity loans(5)	27,262			335			520			—			28,117			1,271		—
	Credit cards	111,441			1,316			1,271			—			114,028			—		1,273
	Installment and other	12,361			229			284			—			12,874			254		3
	Commercial market loans	8,630			31			13			—			8,674			135		15
	Total	$	221,424		$	3,191		$	3,459		$	3,443		$	231,517		$	4,406	$	4,050
	In offices outside North America
	Residential first mortgages	$	44,782		$	312		$	223		$	—		$	45,317		$	454	$	—
	Home equity loans(5)	—			—			—			—			—			—		—
	Credit cards	30,327			602			553			—			31,482			413		322
	Installment and other	29,297			328			149			—			29,774			216		—
	Commercial market loans	31,280			86			255			—			31,621			405		—
	Total	$	135,686		$	1,328		$	1,180		$	—		$	138,194		$	1,488	$	322
	Total GCB and Citi Holdings	$	357,110		$	4,519		$	4,639		$	3,443		$	369,711		$	5,894	$	4,372
	Other	238			10			11			—			259			30		—
	Total Citigroup	$	357,348		$	4,529		$	4,650		$	3,443		$	369,970		$	5,924	$	4,372
	-1	Loans less than 30 days past due are presented as current.
	-2	Includes $43 million of residential first mortgages recorded at fair value.
	-3	Excludes loans guaranteed by U.S. government-sponsored entities.
	-4	Consists of residential first mortgages that are guaranteed by U.S. government-sponsored entities that are 30–89 days past due of $0.6 billion and 90 days past due of $2.8 billion.
	-5	Fixed rate home equity loans and loans extended under home equity lines of credit, which are typically in junior lien positions.
	Consumer Loan Delinquency and Non-Accrual Details at December 31, 2013
	In millions of dollars	Total			30-89 days			≥ 90 days			Past due			Total			Total		90 days past due
		current(1)(2)			past due(3)			past due(3)			government			loans(2)			non-accrual		and accruing
											guaranteed(4)
	In North America offices
	Residential first mortgages	$	66,612		$	2,044		$	1,975		$	5,271		$	75,902		$	3,415	$	3,997
	Home equity loans(5)	30,603			434			605			—			31,642			1,452		—
Credit cards	113,886			1,491			1,452			—			116,829			—		1,452
Installment and other	12,609			225			243			—			13,077			247		7
Commercial market loans	8,630			26			28			—			8,684			112		7
Total	$	232,340		$	4,220		$	4,303		$	5,271		$	246,134		$	5,226	$	5,463
In offices outside North America
Residential first mortgages	$	46,067		$	435		$	332		$	—		$	46,834		$	584	$	—
Home equity loans(5)	—			—			—			—			—			—		—
Credit cards	34,733			780			641			—			36,154			402		413
Installment and other	30,138			398			158			—			30,694			230		—
Commercial market loans	33,242			111			295			—			33,648			610		—
Total	$	144,180		$	1,724		$	1,426		$	—		$	147,330		$	1,826	$	413
Total GCB and Citi Holdings	$	376,520		$	5,944		$	5,729		$	5,271		$	393,464		$	7,052	$	5,876
Other	338			13			16			—			367			43		—
Total Citigroup	$	376,858		$	5,957		$	5,745		$	5,271		$	393,831		$	7,095	$	5,876
-1	Loans less than 30 days past due are presented as current.
-2	Includes $0.9 billion of residential first mortgages recorded at fair value.
-3	Excludes loans guaranteed by U.S. government-sponsored entities.
-4	Consists of residential first mortgages that are guaranteed by U.S. government-sponsored entities that are 30–89 days past due of $1.2 billion and 90 days past due of $4.1 billion.
-5	Fixed rate home equity loans and loans extended under home equity lines of credit, which are typically in junior lien positions.
Consumer Credit Scores (FICO)
In the U.S., independent credit agencies rate an individual’s risk for assuming debt based on the individual’s credit history and assign every consumer a “FICO” (Fair Isaac Corporation) credit score. These scores are continually updated by the agencies based upon an individual’s credit actions (e.g., taking out a loan or missed or late payments).
The following tables provide details on the FICO scores attributable to Citi’s U.S. consumer loan portfolio as of December 31, 2014 and 2013 (commercial market loans are not included in the table since they are business-based and FICO scores are not a primary driver in their credit evaluation). FICO scores are updated monthly for substantially all of the portfolio or, otherwise, on a quarterly basis, for the remaining portfolio.
FICO score distribution in U.S. portfolio(1)(2)	31-Dec-14
In millions of dollars	Less than			≥ 620 but less			Equal to or
	620			than 660			greater
							than 660
Residential first mortgages	$	8,911		$	5,463		$	45,783
Home equity loans	3,257			2,456			20,957
Credit cards	7,647			10,296			92,877
Installment and other	4,015			2,520			5,150
Total	$	23,830		$	20,735		$	164,767
-1	Excludes loans guaranteed by U.S. government entities, loans subject to long-term standby commitments (LTSCs) with U.S. government-sponsored entities and loans recorded at fair value.
-2	Excludes balances where FICO was not available. Such amounts are not material.
FICO score distribution in U.S. portfolio(1)(2)	31-Dec-13
In millions of dollars	Less than			≥ 620 but less			Equal to or
	620			than 660			greater
							than 660
Residential first mortgages	$	11,860		$	6,426		$	46,207
Home equity loans	4,093			2,779			23,152
Credit cards	8,125			10,693			94,437
Installment and other	3,900			2,399			5,186
Total	$	27,978		$	22,297		$	168,982
-1	Excludes loans guaranteed by U.S. government entities, loans subject to LTSCs with U.S. government-sponsored entities and loans recorded at fair value.
-2	Excludes balances where FICO was not available. Such amounts are not material.
Loan to Value (LTV) Ratios
LTV ratios (loan balance divided by appraised value) are calculated at origination and updated by applying market price data.
The following tables provide details on the LTV ratios attributable to Citi’s U.S. consumer mortgage portfolios as of December 31, 2014 and 2013. LTV ratios are updated monthly using the most recent Core Logic Home Price Index data available for substantially all of the portfolio applied at the Metropolitan Statistical Area level, if available, or the state level if not. The remainder of the portfolio is updated in a similar manner using the Federal Housing Finance Agency indices.
LTV distribution in U.S. portfolio(1)(2)	31-Dec-14
In millions of dollars	Less than or			> 80% but less			Greater
	equal to 80%			than or equal to			than
				100%			100%
Residential first mortgages	$	48,163		$	9,480		$	2,670
Home equity loans	14,638			7,267			4,641
Total	$	62,801		$	16,747		$	7,311
-1	Excludes loans guaranteed by U.S. government entities, loans subject to LTSCs with U.S. government-sponsored entities and loans recorded at fair value.
-2	Excludes balances where LTV was not available. Such amounts are not material.
LTV distribution in U.S. portfolio(1)(2)	31-Dec-13
In millions of dollars	Less than or			> 80% but less			Greater
	equal to 80%			than or equal to			than
				100%			100%
Residential first mortgages	$	45,809		$	13,458		$	5,269
Home equity loans	14,216			8,685			6,935
Total	$	60,025		$	22,143		$	12,204
-1	Excludes loans guaranteed by U.S. government entities, loans subject to LTSCs with U.S. government-sponsored entities and loans recorded at fair value.
-2	Excludes balances where LTV was not available. Such amounts are not material.
Impaired Consumer Loans
Impaired loans are those loans where Citigroup believes it is probable all amounts due according to the original contractual terms of the loan will not be collected. Impaired consumer loans include non-accrual commercial market loans, as well as smaller-balance homogeneous loans whose terms have been modified due to the borrower’s financial difficulties and where Citigroup has granted a concession to the borrower. These modifications may include interest rate reductions and/or principal forgiveness. Impaired consumer loans exclude smaller-balance homogeneous loans that have not been modified and are carried on a non-accrual basis. In addition, impaired consumer loans exclude substantially all loans modified pursuant to Citi’s short-term modification programs (i.e., for periods of 12 months or less) that were modified prior to January 1, 2011.
As a result of OCC guidance issued in the third quarter of 2012, mortgage loans to borrowers who have gone through Chapter 7 bankruptcy are classified as troubled debt restructurings (TDRs). These TDRs, other than FHA-insured loans, are written down to collateral value less cost to sell. FHA-insured loans are reserved based on a discounted cash flow model.
The following tables present information about total impaired consumer loans at and for the periods ended December 31, 2014 and 2013, respectively, and for the years ended December 31, 2014 and 2013 for interest income recognized on impaired consumer loans:
	At and for the year ended December 31, 2014
In millions of dollars	Recorded			Unpaid			Related			Average			Interest income
	investment(1)(2)			principal balance			specific allowance(3)			carrying value(4)			recognized(5)(6)
Mortgage and real estate
Residential first mortgages	$	13,551		$	14,387		$	1,909		$	15,389		$	690
Home equity loans	2,029			2,674			599			2,075			74
Credit cards	2,407			2,447			849			2,732			196
Installment and other
Individual installment and other	948			963			450			975			124
Commercial market loans	423			599			110			381			22
Total	$	19,358		$	21,070		$	3,917		$	21,552		$	1,106
-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount and direct write-downs and includes accrued interest only on credit card loans.
-2	$1,896 million of residential first mortgages, $554 million of home equity loans and $158 million of commercial market loans do not have a specific allowance.
(3) Included in the Allowance for loan losses.
(4) Average carrying value represents the average recorded investment ending balance for the last four quarters and does not include the related specific allowance.
(5) Includes amounts recognized on both an accrual and cash basis.
(6) Cash interest receipts on smaller-balance homogeneous loans are generally recorded as revenue. The interest recognition policy for commercial market loans is identical to that for corporate loans, as described below.
	At and for the year ended December 31, 2013
In millions of dollars	Recorded			Unpaid			Related			Average			Interest income
	investment(1)(2)			principal balance			specific allowance(3)			carrying value(4)			recognized(5)(6)(7)
Mortgage and real estate
Residential first mortgages	$	16,801		$	17,788		$	2,309		$	17,616		$	790
Home equity loans	2,141			2,806			427			2,116			81
Credit cards	3,339			3,385			1,178			3,720			234
Installment and other
Individual installment and other	1,114			1,143			536			1,094			153
Commercial market loans	398			605			183			404			22
Total	$	23,793		$	25,727		$	4,633		$	24,950		$	1,280
-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount and direct write-downs and includes accrued interest only on credit card loans.
-2	$2,169 million of residential first mortgages, $568 million of home equity loans and $111 million of commercial market loans do not have a specific allowance.
-3	Included in the Allowance for loan losses.
-4	Average carrying value represents the average recorded investment ending balance for last four quarters and does not include the related specific allowance.
(5) Includes amounts recognized on both an accrual and cash basis.
(6) Cash interest receipts on smaller-balance homogeneous loans are generally recorded as revenue. The interest recognition policy for commercial market loans is identical to that for corporate loans, as described below.
-7	Interest income recognized for the year ended December 31, 2012 was $1,520 million.
Consumer Troubled Debt Restructurings
The following tables present consumer TDRs occurring during the years ended December 31, 2014 and 2013:
	At and for the year ended December 31, 2014
In millions of dollars except number of loans modified	Number of		Post-			Deferred			Contingent			Principal			Average
	loans modified		modification			principal(3)			principal			forgiveness(5)			interest rate
			recorded						forgiveness(4)						reduction
			investment(1)(2)
North America
Residential first mortgages	20,114		$	2,478		$	52		$	36		$	16		1	%
Home equity loans	7,444		279			3			—			14			2
Credit cards	185,962		808			—			—			—			15
Installment and other revolving	46,838		351			—			—			—			7
Commercial markets(6)	191		35			—			—			1			—
Total(7)	260,549		$	3,951		$	55		$	36		$	31
International
Residential first mortgages	3,150		$	103		$	—		$	—		$	1		1	%
Home equity loans	67		11			—			—			—			—
Credit cards	139,128		447			—			—			9			13
Installment and other revolving	61,563		292			—			—			7			9
Commercial markets(6)	346		200			—			—			—			—
Total(7)	204,254		$	1,053		$	—		$	—		$	17
	At and for the year ended December 31, 2013
In millions of dollars except number of loans modified	Number of		Post-			Deferred			Contingent			Principal			Average
	loans modified		modification			principal(3)			principal			forgiveness(5)			interest rate
			recorded						forgiveness(4)						reduction
			investment(1)(8)
North America
Residential first mortgages	32,116		$	4,160		$	68		$	25		$	158		1	%
Home equity loans	12,774		552			1			—			92			1
Credit cards	172,211		826			—			—			—			14
Installment and other revolving	53,332		381			—			—			—			7
Commercial markets(6)	202		39			—			—			—			—
Total(7)	270,635		$	5,958		$	69		$	25		$	250
International
Residential first mortgages	3,598		$	159		$	—		$	—		$	2		1	%
Home equity loans	68		2			—			—			—			—
Credit cards	165,350		557			—			—			10			13
Installment and other revolving	59,030		342			—			—			7			7
Commercial markets(6)	413		104			2			—			—			—
Total(7)	228,459		$	1,164		$	2		$	—		$	19
-1	Post-modification balances include past due amounts that are capitalized at the modification date.
-2	Post-modification balances in North America include $322 million of residential first mortgages and $80 million of home equity loans to borrowers who have gone through Chapter 7 bankruptcy in the year ended December 31, 2014. These amounts include $179 million of residential first mortgages and $69 million of home equity loans that were newly classified as TDRs in the year ended December 31, 2014 as a result of OCC guidance, as described above.
-3	Represents portion of contractual loan principal that is non-interest bearing but still due from the borrower. Such deferred principal is charged off at the time of permanent modification to the extent that the related loan balance exceeds the underlying collateral value.
-4	Represents portion of contractual loan principal that is non-interest bearing and, depending upon borrower performance, eligible for forgiveness.
-5	Represents portion of contractual loan principal that was forgiven at the time of permanent modification.
(6) Commercial markets loans are generally borrower-specific modifications and incorporate changes in the amount and/or timing of principal and/or interest.
(7) The above tables reflect activity for loans outstanding as of the end of the reporting period that were considered TDRs.
(8) Post-modification balances in North America include $502 million of residential first mortgages and $101 million of home equity loans to borrowers who have gone through Chapter 7 bankruptcy in the year ended December 31, 2013. These amounts include $332 million of residential first mortgages and $85 million of home equity loans that were newly classified as TDRs in the year ended December 31, 2013 as a result of OCC guidance, as described above.
The following table presents consumer TDRs that defaulted during the years ended December 31, 2014 and 2013, respectively, for which the payment default occurred within one year of a permanent modification. Default is defined as 60 days past due, except for classifiably managed commercial markets loans, where default is defined as 90 days past due.
	Years ended December 31,
In millions of dollars	2014			2013
North America
Residential first mortgages	$	715		$	1,532
Home equity loans	72			183
Credit cards	194			204
Installment and other revolving	95			91
Commercial markets	9			3
Total	$	1,085		$	2,013
International
Residential first mortgages	$	24		$	54
Home equity loans	—			—
Credit cards	217			198
Installment and other revolving	104			104
Commercial markets	105			15
Total	$	450		$	371
Corporate Loans
Corporate loans represent loans and leases managed by the Institutional Clients Group in Citicorp or, to a much lesser extent, in Citi Holdings. The following table presents information by corporate loan type as of December 31, 2014 and December 31, 2013:
In millions of dollars	December 31,			December 31,
	2014			2013
Corporate
In U.S. offices
Commercial and industrial	$	35,055		$	32,704
Financial institutions	36,272			25,102
Mortgage and real estate(1)	32,537			29,425
Installment, revolving credit and other	29,207			34,434
Lease financing	1,758			1,647
	$	134,829		$	123,312
In offices outside the U.S.
Commercial and industrial	$	79,239		$	82,663
Financial institutions	33,269			38,372
Mortgage and real estate(1)	6,031			6,274
Installment, revolving credit and other	19,259			18,714
Lease financing	356			527
Governments and official institutions	2,236			2,341
	$	140,390		$	148,891
Total Corporate loans	$	275,219		$	272,203
Net unearned income	(554		)	(562		)
Corporate loans, net of unearned income	$	274,665		$	271,641
-1	Loans secured primarily by real estate.
The Company sold and/or reclassified (to held-for-sale) $4.8 billion and $5.8 billion of corporate loans during the years ended December 31, 2014 and 2013, respectively. The Company did not have significant purchases of corporate loans classified as held-for-investment for the years ended December 31, 2014 or 2013.
Corporate loans are identified as impaired and placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due, except when the loan is well collateralized and in the process of collection. Any interest accrued on impaired corporate loans and leases is reversed at 90 days and charged against current earnings, and interest is thereafter included in earnings only to the extent actually received in cash. When there is doubt regarding the ultimate collectability of principal, all cash receipts are thereafter applied to reduce the recorded investment in the loan. While corporate loans are generally managed based on their internally assigned risk rating (see further discussion below), the following tables present delinquency information by corporate loan type as of December 31, 2014 and December 31, 2013.
Corporate Loan Delinquency and Non-Accrual Details at December 31, 2014
In millions of dollars	30-89 days			≥ 90 days			Total past due			Total			Total			Total
	past due			past due and			and accruing			non-accrual(2)			current(3)			loans (4)
	and accruing(1)			accruing(1)
Commercial and industrial	$	50		$	—		$	50		$	575		$	109,764		$	110,389
Financial institutions	2			—			2			250			67,580			67,832
Mortgage and real estate	86			—			86			252			38,135			38,473
Leases	—			—			—			51			2,062			2,113
Other	49			1			50			55			49,844			49,949
Loans at fair value																5,858
Purchased Distressed Loans																51
Total	$	187		$	1		$	188		$	1,183		$	267,385		$	274,665
-1	Corporate loans that are 90 days past due are generally classified as non-accrual. Corporate loans are considered past due when principal or interest is contractually due but unpaid.
-2	Citi generally does not manage corporate loans on a delinquency basis. Non-accrual loans generally include those loans that are ≥ 90 days past due or those loans for which Citi believes, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful.
-3	Corporate loans are past due when principal or interest is contractually due but unpaid. Loans less than 30 days past due are presented as current.
-4	Total loans include loans at fair value, which are not included in the various delinquency columns.
Corporate Loan Delinquency and Non-Accrual Details at December 31, 2013
In millions of dollars	30-89 days			≥ 90 days			Total past due			Total			Total			Total
	past due			past due and			and accruing			non-accrual(2)			current(3)			loans (4)
	and accruing(1)			accruing(1)
Commercial and industrial	$	72		$	5		$	77		$	769		$	112,985		$	113,831
Financial institutions	—			—			—			365			61,704			62,069
Mortgage and real estate	183			58			241			515			34,027			34,783
Leases	9			1			10			189			1,975			2,174
Other	47			2			49			70			54,476			54,595
Loans at fair value																4,072
Purchased Distressed Loans																117
Total	$	311		$	66		$	377		$	1,908		$	265,167		$	271,641
-1	Corporate loans that are 90 days past due are generally classified as non-accrual. Corporate loans are considered past due when principal or interest is contractually due but unpaid.
-2	Citi generally does not manage corporate loans on a delinquency basis. Non-accrual loans generally include those loans that are ≥ 90 days past due or those loans for which Citi believes, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful.
-3	Corporate loans are past due when principal or interest is contractually due but unpaid. Loans less than 30 days past due are presented as current.
-4	Total loans include loans at fair value, which are not included in the various delinquency columns.
Citigroup has a risk management process to monitor, evaluate and manage the principal risks associated with its corporate loan portfolio. As part of its risk management process, Citi assigns numeric risk ratings to its corporate loan facilities based on quantitative and qualitative assessments of the obligor and facility. These risk ratings are reviewed at least annually or more often if material events related to the obligor or facility warrant. Factors considered in assigning the risk ratings include financial condition of the obligor, qualitative assessment of management and strategy, amount and sources of repayment, amount and type of collateral and guarantee arrangements, amount and type of any contingencies associated with the obligor, and the obligor’s industry and geography.
The obligor risk ratings are defined by ranges of default probabilities. The facility risk ratings are defined by ranges of loss norms, which are the product of the probability of default and the loss given default. The investment grade rating categories are similar to the category BBB-/Baa3 and above as defined by S&P and Moody’s. Loans classified according to the bank regulatory definitions as special mention, substandard and doubtful will have risk ratings within the non-investment grade categories.
Corporate Loans Credit Quality Indicators at December 31, 2014 and December 31, 2013
	Recorded investment in loans(1)
In millions of dollars	December 31, 2014			December 31,
				2013
Investment grade(2)
Commercial and industrial	$	80,812		$	79,360
Financial institutions	56,154			49,699
Mortgage and real estate	16,068			13,178
Leases	1,669			1,600
Other	46,284			51,370
Total investment grade	$	200,987		$	195,207
Non-investment grade(2)
Accrual
Commercial and industrial	$	29,003		$	33,702
Financial institutions	11,429			12,005
Mortgage and real estate	3,587			4,205
Leases	393			385
Other	3,609			3,155
Non-accrual
Commercial and industrial	575			769
Financial institutions	250			365
Mortgage and real estate	252			515
Leases	51			189
Other	55			70
Total non-investment grade	$	49,204		$	55,360
Private bank loans managed on a delinquency basis (2)	$	18,616		$	17,002
Loans at fair value	5,858			4,072
Corporate loans, net of unearned income	$	274,665		$	271,641
-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.
-2	Held-for-investment loans are accounted for on an amortized cost basis.
Corporate loans and leases identified as impaired and placed on non-accrual status are written down to the extent that principal is judged to be uncollectible. Impaired collateral-dependent loans and leases, where repayment is expected to be provided solely by the sale of the underlying collateral and there are no other available and reliable sources of repayment, are written down to the lower of cost or collateral value, less cost to sell. Cash-basis loans are returned to an accrual status when all contractual principal and interest amounts are reasonably assured of repayment and there is a sustained period of repayment performance, generally six months, in accordance with the contractual terms of the loan.
The following tables present non-accrual loan information by corporate loan type at December 31, 2014 and December 31, 2013 and interest income recognized on non-accrual corporate loans for the years ended December 31, 2014 and 2013, respectively:
Non-Accrual Corporate Loans
	At and for the year ended December 31, 2014
In millions of dollars	Recorded			Unpaid			Related specific			Average			Interest income
	investment(1)			principal balance			allowance			carrying value(2)			recognized(3)
Non-accrual corporate loans
Commercial and industrial	$	575		$	863		$	155		$	658		$	32
Financial institutions	250			262			7			278			4
Mortgage and real estate	252			287			24			263			8
Lease financing	51			53			29			85			—
Other	55			68			21			60			3
Total non-accrual corporate loans	$	1,183		$	1,533		$	236		$	1,344		$	47
	At and for the year ended December 31, 2013
In millions of dollars	Recorded			Unpaid			Related specific			Average			Interest income
	investment(1)			principal balance			allowance			carrying value(2)			recognized(3)
Non-accrual corporate loans
Commercial and industrial	$	769		$	1,074		$	79		$	967		$	30
Financial institutions	365			382			3			378			9
Mortgage and real estate	515			651			35			585			3
Lease financing	189			190			131			189			—
Other	70			216			20			64			1
Total non-accrual corporate loans	$	1,908		$	2,513		$	268		$	2,183		$	43
	31-Dec-14						31-Dec-13
In millions of dollars	Recorded			Related specific			Recorded			Related specific
	investment(1)			allowance			investment(1)			allowance
Non-accrual corporate loans with valuation allowances
Commercial and industrial	$	224		$	155		$	401		$	79
Financial institutions	37			7			24			3
Mortgage and real estate	70			24			253			35
Lease financing	47			29			186			131
Other	55			21			61			20
Total non-accrual corporate loans with specific allowance	$	433		$	236		$	925		$	268
Non-accrual corporate loans without specific allowance
Commercial and industrial	$	351					$	368
Financial institutions	213						341
Mortgage and real estate	182						262
Lease financing	4						3
Other	—						9
Total non-accrual corporate loans without specific allowance	$	750		N/A			$	983		N/A
-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.
-2	Average carrying value represents the average recorded investment balance and does not include related specific allowance.
-3	Interest income recognized for the year ended December 31, 2012 was $98 million.
N/A Not Applicable
Corporate Troubled Debt Restructurings
The following table presents corporate TDR activity at and for the year ended December 31, 2014.
In millions of dollars	Carrying			TDRs			TDRs			TDRs
	Value			involving changes			involving changes			involving changes
				in the amount			in the amount			in the amount
				and/or timing of			and/or timing of			and/or timing of
				principal payments(1)			interest payments(2)			both principal and
										interest payments
Commercial and industrial	$	48		$	30		$	17		$	1
Financial institutions	—			—			—			—
Mortgage and real estate	8			5			1			2
Other	—			—			—			—
Total	$	56		$	35		$	18		$	3
-1	TDRs involving changes in the amount or timing of principal payments may involve principal forgiveness or deferral of periodic and/or final principal payments. Because forgiveness of principal is rare for commercial loans, modifications typically have little to no impact on the loans’ projected cash flows and thus little to no impact on the allowance established for the loan.  Charge-offs for amounts deemed uncollectable may be recorded at the time of the restructuring or may have already been recorded in prior periods such that no charge-off is required at the time of the modification.
-2	TDRs involving changes in the amount or timing of interest payments may involve a below-market interest rate.
The following table presents corporate TDR activity at and for the year ended December 31, 2013.
In millions of dollars	Carrying			TDRs			TDRs			TDRs
	Value			involving changes			involving changes			involving changes
				in the amount			in the amount			in the amount
				and/or timing of			and/or timing of			and/or timing of
				principal payments(1)			interest payments(2)			both principal and
										interest payments
Commercial and industrial	$	130		$	55		$	58		$	17
Financial institutions	—			—			—			—
Mortgage and real estate	34			19			14			1
Other	5			—			—			5
Total	$	169		$	74		$	72		$	23
-1	TDRs involving changes in the amount or timing of principal payments may involve principal forgiveness or deferral of periodic and/or final principal payments. Because forgiveness of principal is rare for commercial loans, modifications typically have little to no impact on the loans’ projected cash flows and thus little to no impact on the allowance established for the loan.  Charge-offs for amounts deemed uncollectable may be recorded at the time of the restructuring or may have already been recorded in prior periods such that no charge-off is required at the time of the modification.
-2	TDRs involving changes in the amount or timing of interest payments may involve a below-market interest rate.
The following table presents total corporate loans modified in a TDR at December 31, 2014 and 2013, as well as those TDRs that defaulted during the three months ended December 31, 2014 and 2013 and for which the payment default occurred within one year of a permanent modification. Default is defined as 60 days past due, except for classifiably managed commercial markets loans, where default is defined as 90 days past due.
In millions of dollars	TDR balances at			TDR loans in payment default during the year ended			TDR balances at			TDR loans in payment default during the year ended
	31-Dec-14			31-Dec-14			31-Dec-13			31-Dec-13
Commercial and industrial	$	117		$	—		$	197		$	27
Loans to financial institutions	—			—			14			—
Mortgage and real estate	107			—			161			17
Other	355			—			422			—
Total	$	579		$	—		$	794		$	44
Purchased Distressed Loans
Included in the corporate and consumer loans outstanding tables above are purchased distressed loans, which are loans that have evidenced significant credit deterioration subsequent to origination but prior to acquisition by Citigroup. In accordance with SOP 03-3 (codified as ASC 310-30), the difference between the total expected cash flows for these loans and the initial recorded investment is recognized in income over the life of the loans using a level yield. Accordingly, these loans have been excluded from the impaired loan table information presented above. In addition, per SOP 03-3, subsequent decreases in the expected cash flows for a purchased distressed loan require a build of an allowance so the loan retains its level yield. However, increases in the expected cash flows are first recognized as a reduction of any previously established allowance and then recognized as income prospectively over the remaining life of the loan by increasing the loan’s level yield. Where the expected cash flows cannot be reliably estimated, the purchased distressed loan is accounted for under the cost recovery method. The carrying amount of the Company’s purchased distressed loan portfolio was $361 million and $590 million, net of an allowance of $60 million and $113 million, at December 31, 2014 and 2013, respectively.
The changes in the accretable yield, related allowance and carrying amount net of accretable yield for 2014 and 2013 are as follows:
In millions of dollars	Accretable			Carrying			Allowance
	yield			amount of loan
				receivable
Balance at December 31, 2012	$	22		$	537		$	98
Purchases (1)	$	46		$	405		$	—
Disposals/payments received	(5		)	(199		)	(8		)
Accretion	(10		)	10			—
Builds (reductions) to the allowance	22			—			25
Increase to expected cash flows	3			—			—
FX/other	—			(50		)	(2		)
Balance at December 31, 2013 (2)	$	78		$	703		$	113
Purchases (1)	$	1		$	46		$	—
Disposals/payments received	(6		)	(307		)	(15		)
Accretion	(24		)	24			—
Builds (reductions) to the allowance	(36		)	—			(27		)
Increase to expected cash flows	23			—			—
FX/other	(9		)	(45		)	(11		)
Balance at December 31, 2014 (2)	$	27		$	421		$	60
-1	The balance reported in the column “Carrying amount of loan receivable” consists of $46 million and $405 million in 2014 and 2013, respectively, of purchased loans accounted for under the level-yield method. No purchased loans were accounted for under the cost-recovery method. These balances represent the fair value of these loans at their acquisition date. The related total expected cash flows for the level-yield loans at their acquisition dates were $46 million and $451 million in 2014 and 2013, respectively.
-2	The balance reported in the column “Carrying amount of loan receivable” consists of $413 million and $691 million of loans accounted for under the level-yield method and $8 million and $12 million accounted for under the cost-recovery method in 2014 and 2013, respectively.

ALLOWANCE_FOR_CREDIT_LOSSES

ALLOWANCE FOR CREDIT LOSSES	12 Months Ended
	Dec. 31, 2014
Loans and Leases Receivable, Allowance [Abstract]
ALLOWANCE FOR CREDIT LOSSES	ALLOWANCE FOR CREDIT LOSSES
	In millions of dollars	2014			2013			2012
	Allowance for loan losses at beginning of period	$	19,648		$	25,455		$	30,115
	Gross credit losses	(11,108		)	(12,769		)	(17,005		)
	Gross recoveries (1)(2)(3)	2,135			2,306			2,774
	Net credit losses (NCLs)	$	(8,973	)	$	(10,463	)	$	(14,231	)
	NCLs	$	8,973		$	10,463		$	14,231
	Net reserve releases	(1,879		)	(1,961		)	(1,908		)
	Net specific reserve releases	(266		)	(898		)	(1,865		)
	Total provision for credit losses	$	6,828		$	7,604		$	10,458
	Other, net (4)	(1,509		)	(2,948		)	(887		)
	Allowance for loan losses at end of period	$	15,994		$	19,648		$	25,455
	Allowance for credit losses on unfunded lending commitments at beginning of period (5)	$	1,229		$	1,119		$	1,136
	Provision (release) for unfunded lending commitments	(162		)	80			(16		)
	Other, net	(4		)	30			(1		)
	Allowance for credit losses on unfunded lending commitments at end of period (5)	$	1,063		$	1,229		$	1,119
	Total allowance for loans, leases, and unfunded lending commitments	$	17,057		$	20,877		$	26,574
	-1	Recoveries have been reduced by certain collection costs that are incurred only if collection efforts are successful.
	-2	2012 includes approximately $635 million of incremental charge-offs related to OCC guidance issued in the third quarter of 2012 (see Note 1 to the Consolidated Financial Statements). There was a corresponding approximately $600 million release in the third quarter of 2012 allowance for loan losses related to these charge-offs. 2012 also includes a benefit to charge-offs of approximately $40 million related to finalizing the impact of this OCC guidance in the fourth quarter of 2012.
	-3	2012 includes approximately $370 million of incremental charge-offs related to previously deferred principal balances on modified loans in the first quarter of 2012. These charge-offs were related to anticipated forgiveness of principal in connection with the national mortgage settlement. There was a corresponding approximately $350 million reserve release in the first quarter of 2012 related to these charge-offs.
	-4	2014 includes reductions of approximately $1.1 billion related to the sale or transfer to held-for-sale (HFS) of various loan portfolios, which includes approximately $411 million related to the transfer of various real estate loan portfolios to HFS, approximately $204 million related to the transfer to HFS of a business in Greece, approximately $177 million related to the transfer to HFS of a business in Spain, approximately $29 million related to the transfer to HFS of a business in Honduras, and approximately $108 million related to the transfer to HFS of various EMEA loan portfolios. Additionally, 2014 includes a reduction of approximately $463 million related to foreign currency translation. 2013 includes reductions of approximately $2.4 billion related to the sale or transfer to held-for-sale of various loan portfolios, which includes approximately $360 million related to the sale of Credicard and approximately $255 million related to a transfer to held-for-sale of a loan portfolio in Greece, approximately $230 million related to a non-provision transfer of reserves associated with deferred interest to other assets which includes deferred interest and approximately $220 million related to foreign currency translation. 2012 includes reductions of approximately $875 million related to the sale or transfer to held-for-sale of various U.S. loan portfolios.
	-5	Represents additional credit loss reserves for unfunded lending commitments and letters of credit recorded in Other liabilities on the Consolidated Balance Sheet.
	Allowance for Credit Losses and Investment in Loans at December 31, 2014
	In millions of dollars	Corporate			Consumer			Total
	Allowance for loan losses at beginning of period	$	2,584		$	17,064		$	19,648
	Charge-offs	(427		)	(10,681		)	(11,108		)
	Recoveries	139			1,996			2,135
	Replenishment of net charge-offs	288			8,685			8,973
	Net reserve releases	(133		)	(1,746		)	(1,879		)
	Net specific reserve releases	(20		)	(246		)	(266		)
	Other	(42		)	(1,467		)	(1,509		)
	Ending balance	$	2,389		$	13,605		$	15,994
	Allowance for loan losses
	Determined in accordance with ASC 450	$	2,110		$	9,673		$	11,783
	Determined in accordance with ASC 310-10-35	235			3,917			4,152
	Determined in accordance with ASC 310-30	44			15			59
	Total allowance for loan losses	$	2,389		$	13,605		$	15,994
	Loans, net of unearned income
	Loans collectively evaluated for impairment in accordance with ASC 450	$	267,271		$	350,199		$	617,470
	Loans individually evaluated for impairment in accordance with ASC 310-10-35	1,485			19,358			20,843
	Loans acquired with deteriorated credit quality in accordance with ASC 310-30	51			370			421
	Loans held at fair value	5,858			43			5,901
	Total loans, net of unearned income	$	274,665		$	369,970		$	644,635
	Allowance for Credit Losses and Investment in Loans at December 31, 2013
	In millions of dollars	Corporate			Consumer			Total
	Allowance for loan losses at beginning of period	$	2,776		$	22,679		$	25,455
	Charge-offs	(369		)	(12,400		)	(12,769		)
	Recoveries	168			2,138			2,306
	Replenishment of net charge-offs	201			10,262			10,463
	Net reserve releases	(199		)	(1,762		)	(1,961		)
	Net specific reserve releases	(1		)	(897		)	(898		)
	Other	8			(2,956		)	(2,948		)
	Ending balance	$	2,584		$	17,064		$	19,648
	Allowance for loan losses
	Determined in accordance with ASC 450	$	2,232		$	12,402		$	14,634
	Determined in accordance with ASC 310-10-35	268			4,633			4,901
	Determined in accordance with ASC 310-30	84			29			113
	Total allowance for loan losses	$	2,584		$	17,064		$	19,648
	Loans, net of unearned income
	Loans collectively evaluated for impairment in accordance with ASC 450	$	265,230		$	368,449		$	633,679
	Loans individually evaluated for impairment in accordance with ASC 310-10-35	2,222			23,793			26,015
	Loans acquired with deteriorated credit quality in accordance with ASC 310-30	117			632			749
	Loans held at fair value	4,072			957			5,029
	Total loans, net of unearned income	$	271,641		$	393,831		$	665,472
Allowance for Credit Losses at December 31, 2012
In millions of dollars	Corporate			Consumer			Total
Allowance for loan losses at beginning of period	$	2,879		$	27,236		$	30,115
Charge-offs	(640		)	(16,365		)	(17,005		)
Recoveries	417			2,357			2,774
Replenishment of net charge-offs	223			14,008			14,231
Net reserve build (releases)	2			(1,910		)	(1,908		)
Net specific reserve releases	(138		)	(1,727		)	(1,865		)
Other	33			(920		)	(887		)
Ending balance	$	2,776		$	22,679		$	25,455

GOODWILL_AND_INTANGIBLE_ASSETS

GOODWILL AND INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS	GOODWILL AND INTANGIBLE ASSETS
	Goodwill
	The changes in Goodwill during 2014 and 2013 were as follows:
	In millions of dollars
	Balance at December 31, 2012	$	25,673
	Foreign exchange translation	$	(577	)
	Smaller acquisitions/divestitures, purchase accounting adjustments and other	(25		)
	Sale of Brazil Credicard	(62		)
	Balance at December 31, 2013	$	25,009
	Foreign exchange translation and other	$	(1,214	)
	Smaller acquisitions/divestitures, purchase accounting adjustments and other	(203		)
	Balance at December 31, 2014	$	23,592
	The changes in Goodwill by segment during 2014 and 2013 were as follows:
	In millions of dollars	Global Consumer Banking			Institutional Clients Group			Citi Holdings			Total
	Balance at December 31, 2012	$	14,539		$	10,981		$	153		$	25,673
	Goodwill disposed of during 2013 (1)	$	(82	)	$	—		$	—		$	(82	)
	Other (2)	(472		)	(113		)	3			$	(582	)
	Balance at December 31, 2013	$	13,985		$	10,868		$	156		$	25,009
	Goodwill disposed of during 2014 (3)	$	(86	)	$	(1	)	$	(116	)	$	(203	)
	Other (2)	(505		)	(711		)	2			$	(1,214	)
	Balance at December 31, 2014	$	13,394		$	10,156		$	42		$	23,592
	-1	Primarily related to the sale of Credicard. See Note 2 to the Consolidated Financial Statements.
	-2	Other changes in Goodwill primarily reflect foreign exchange effects on non-dollar-denominated goodwill and purchase accounting adjustments.
	-3	Primarily related to the sale of the Spain consumer operations and the agreement to sell the Japan retail banking business. See Note 2 to the Consolidated Financial Statements.
	Goodwill impairment testing is performed at the level below the business segments (referred to as a reporting unit). The Company performed its annual goodwill impairment test as of July 1, 2014 resulting in no impairment for any of the reporting units. The reporting unit structure in 2014 was the same as the reporting unit structure in 2013, except for the effect of the ICG reorganization during the first quarter of 2014 noted below and the sale involving the Citi Holdings—Cards reporting unit during the third quarter of 2014.
	Effective January 1, 2014, the businesses within the legacy ICG reporting units, Securities and Banking and Transaction Services, were realigned and aggregated as Banking and Markets and securities services (Markets). An interim goodwill impairment test was performed on the impacted reporting units as of January 1, 2014, resulting in no impairment. Subsequent to January 1, 2014, goodwill was allocated to disposals and tested for impairment under Banking and Markets. Furthermore, on September 22, 2014, Citi sold its consumer operations in Spain, which included the Citi Holdings—Cards reporting unit. As a result, 100% of the Citi Holdings—Cards goodwill balance was allocated to the sale. No other interim goodwill impairment tests were performed during 2014, other than the test performed related to the ICG reorganization discussed above.
	No goodwill was deemed impaired in 2014, 2013 and 2012.
	The following table shows reporting units with goodwill balances as of December 31, 2014 and the fair value as a percentage of allocated book value as of the annual impairment test.
	In millions of dollars
	Reporting Unit(1)	Fair Value as a % of allocated book value		Goodwill
	North America Global Consumer Banking	260	%	$	6,756
	EMEA Global Consumer Banking	178		332
	Asia Global Consumer Banking	264		4,704
	Latin America Global Consumer Banking	214		1,602
	Banking	404		3,481
	Markets and Securities Services	200		6,675
	Latin America Retirement Services	193		42
	-1	Citi Holdings—Other is excluded from the table as there is no goodwill allocated to it.
	During the fourth quarter of 2014, Citi announced its intention to exit its consumer businesses in 11 markets in Latin America, Asia and EMEA, as well as its consumer finance business in Korea. Citi also announced its intention to exit several non-core transactions businesses within ICG. Effective January 1, 2015, these businesses were transferred to Citi Holdings and aggregated to five new reporting units: Citi Holdings—Consumer EMEA, Citi Holdings—Consumer Latin America, Citi Holdings—Consumer Japan, Citi Holdings—Consumer Finance South Korea, and Citi Holdings—ICG.  Goodwill balances associated with the transfers were allocated to each of the component businesses based on their relative fair values to the legacy reporting units.
	Intangible Assets
	The components of intangible assets as of December 31, 2014 and December 31, 2013 were as follows:
		31-Dec-14									31-Dec-13
	In millions of dollars	Gross			Accumulated			Net			Gross			Accumulated			Net
		carrying			amortization			carrying			carrying			amortization			carrying
		amount						amount			amount						amount
	Purchased credit card relationships	$	7,626		$	6,294		$	1,332		$	7,552		$	6,006		$	1,546
	Core deposit intangibles	1,153			1,021			132			1,255			1,052			203
	Other customer relationships	579			331			248			675			389			286
	Present value of future profits	233			154			79			238			146			92
	Indefinite-lived intangible assets	290			—			290			323			—			323
	Other(1)	5,217			2,732			2,485			5,073			2,467			2,606
	Intangible assets (excluding MSRs)	$	15,098		$	10,532		$	4,566		$	15,116		$	10,060		$	5,056
	Mortgage servicing rights (MSRs) (2)	1,845			—			1,845			2,718			—			2,718
	Total intangible assets	$	16,943		$	10,532		$	6,411		$	17,834		$	10,060		$	7,774
	-1	Includes contract-related intangible assets.
	-2	For additional information on Citi’s MSRs, including the roll-forward from 2013 to 2014, see Note 22 to the Consolidated Financial Statements.
	Intangible assets amortization expense was $756 million, $808 million and $856 million for 2014, 2013 and 2012, respectively. Intangible assets amortization expense is estimated to be $659 million in 2015, $634 million in 2016, $938 million in 2017, $411 million in 2018 and $368 million in 2019.
	The changes in intangible assets during the 12 months ended December 31, 2014 were as follows:
		Net carrying															Net carrying
		amount at															amount at
	In millions of dollars	31-Dec-13			Acquisitions/			Amortization			Impairments			FX and			31-Dec-14
					divestitures									other (1)
	Purchased credit card relationships	$	1,546		$	110		$	(324	)	$	—		$	—		$	1,332
	Core deposit intangibles	203			(6		)	(59		)	—			(6		)	132
Other customer relationships	286			14			(28		)	—			(24		)	248
Present value of future profits	92			—			(12		)	—			(1		)	79
Indefinite-lived intangible assets	323			(2		)	—			—			(31		)	290
Other	2,606			157			(333		)	(2		)	57			2,485
Intangible assets (excluding MSRs)	$	5,056		$	273		$	(756	)	$	(2	)	$	(5	)	$	4,566
Mortgage servicing rights (MSRs) (2)	2,718															1,845
Total intangible assets	$	7,774														$	6,411
-1	Includes foreign exchange translation and purchase accounting adjustments.
-2	For additional information on Citi’s MSRs, including the roll-forward from 2013 to 2014, see Note 22 to the Consolidated Financial Statements.

DEBT

DEBT	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
DEBT	DEBT
	Short-Term Borrowings
		2014					2013
	In millions of dollars	Balance			Weighted average coupon		Balance			Weighted average coupon
	Commercial paper
	Significant Citibank entities(1)	$	16,085		0.22	%	$	17,677		0.25	%
	Parent(2)	70			0.95		201			1.11
	Total Commercial paper	$	16,155		0.23	%	$	17,878		0.26	%
	Other borrowings (3)	$	42,180		0.53	%	$	41,066		0.87	%
	Total	$	58,335				$	58,944
	-1	Significant Citibank Entities consist of Citibank, N.A. units domiciled in the U.S., Western Europe, Hong Kong and Singapore.
	-2	Parent includes the parent holding company (Citigroup Inc.) and Citi’s broker-dealer subsidiaries that are consolidated into Citigroup.
	-3	Includes borrowings from the Federal Home Loan Banks and other market participants. At both December 31, 2014 and December 31, 2013, collateralized short-term advances from the Federal Home Loan Banks were $11.2 billion.
	Borrowings under bank lines of credit may be at interest rates based on LIBOR, CD rates, the prime rate or bids submitted by the banks. Citigroup pays commitment fees for its lines of credit.
	Some of Citigroup’s non-bank subsidiaries have credit facilities with Citigroup’s subsidiary depository institutions, including Citibank, N.A. Borrowings under these facilities are secured in accordance with Section 23A of the Federal Reserve Act.
	Citigroup Global Markets Holdings Inc. (CGMHI) has borrowing agreements consisting of facilities that CGMHI has been advised are available, but where no contractual lending obligation exists. These arrangements are reviewed on an ongoing basis to ensure flexibility in meeting CGMHI’s short-term requirements.
	Long-Term Debt
					Balances at
					December 31,
	In millions of dollars	Weighted		Maturities	2014			2013
		average
		coupon
	Citigroup Inc.(1)
	Senior debt	3.85	%	2015-2098	$	122,323		$	124,857
	Subordinated debt(2)	4.48		2015-2044	25,464			28,039
	Trust preferred	6.9		2036-2067	1,725			3,908
	securities
	Bank(3)
	Senior debt	1.74		2015-2038	65,146			56,039
	Subordinated debt(2)	—		—	—			418
	Broker-dealer(4)
	Senior debt	4.06		2015-2039	8,399			7,831
	Subordinated debt(2)	2.07		2016-2037	23			24
	Total(5)	3.34	%		$	223,080		$	221,116
	Senior debt				$	195,868		$	188,727
	Subordinated debt(2)				25,487			28,481
	Trust preferred				1,725			3,908
	securities
	Total				$	223,080		$	221,116
	-1	Parent holding company, Citigroup Inc.
	-2	Includes notes that are subordinated within certain countries, regions or subsidiaries.
	-3	Represents the Significant Citibank Entities as well as other Citibank and Banamex entities. At December 31, 2014 and December 31, 2013, collateralized long-term advances from the Federal Home Loan Banks were $19.8 billion and $14.0 billion, respectively.
	-4	Represents broker-dealer subsidiaries that are consolidated into Citigroup Inc., the parent holding company.
	-5	Includes senior notes with carrying values of $87 million issued to outstanding Safety First Trusts at December 31, 2013. As of December 31, 2014, no amounts were outstanding to these trusts.
	The Company issues both fixed and variable rate debt in a range of currencies. It uses derivative contracts, primarily interest rate swaps, to effectively convert a portion of its fixed rate debt to variable rate debt and variable rate debt to fixed rate debt. The maturity structure of the derivatives generally corresponds to the maturity structure of the debt being hedged. In addition, the Company uses other derivative contracts to manage the foreign exchange impact of certain debt issuances. At December 31, 2014, the Company’s overall weighted average interest rate for long-term debt was 3.34% on a contractual basis and 2.48% including the effects of derivative contracts.
	Aggregate annual maturities of long-term debt obligations (based on final maturity dates) including trust preferred securities are as follows:
	In millions of dollars	2015			2016			2017			2018			2019			Thereafter		Total
	Bank	$	14,459		$	21,248		$	14,190		$	9,128		$	2,146		$	3,975	$	65,146
	Broker-dealer	760			708			210			141			1,725			4,878		8,422
	Citigroup Inc.	15,851			20,172			25,849			12,748			18,246			56,646		149,512
	Total	$	31,070		$	42,128		$	40,249		$	22,017		$	22,117		$	65,499	$	223,080
	The following table summarizes the Company’s outstanding trust preferred securities at December 31, 2014:
												Junior subordinated debentures owned by trust
	Trust	Issuance	Securities		Liquidation			Coupon		Common		Amount			Maturity	Redeemable
		date	issued		value(1)			rate(2)		shares						by issuer
										issued						beginning
										to parent
	In millions of dollars, except share amounts
	Citigroup Capital III	Dec. 1996	194,053		$	194		7.625	%	6,003		$	200		Dec. 1, 2036	Not redeemable
	Citigroup Capital XIII	Sept. 2010	89,840,000		2,246			7.875		1,000		2,246			Oct. 30, 2040	Oct. 30, 2015
	Citigroup Capital XVIII	Jun. 2007	99,901		156			6.829		50		156			June 28, 2067	June 28, 2017
	Total obligated				$	2,596						$	2,602
	Note: Distributions on the trust preferred securities and interest on the subordinated debentures are payable semiannually for Citigroup Capital III and Citigroup Capital XVIII and quarterly for Citigroup Capital XIII.
	-1	Represents the notional value received by investors from the trusts at the time of issuance.
-2	In each case, the coupon rate on the subordinated debentures is the same as that on the trust preferred securities.

REGULATORY_CAPITAL_AND_CITIGRO

REGULATORY CAPITAL AND CITIGROUP, INC. PARENT COMPANY INFORMATION	12 Months Ended
	Dec. 31, 2014
Banking and Thrift [Abstract]
REGULATORY CAPITAL AND CITIGROUP, INC. PARENT COMPANY INFORMATION	REGULATORY CAPITAL AND CITIGROUP INC. PARENT COMPANY INFORMATION
	Citigroup is subject to risk-based capital and leverage guidelines issued by the Federal Reserve Board. Citi’s U.S. insured depository institution subsidiaries, including Citibank, N.A., are subject to similar guidelines issued by their respective primary federal bank regulatory agencies. These guidelines are used to evaluate capital adequacy and include the required minimums shown in the following table. The regulatory agencies are required by law to take specific prompt actions with respect to institutions that do not meet minimum capital standards.
	The following table sets forth Citigroup’s and Citibank, N.A.’s regulatory capital tiers, risk-weighted assets, quarterly adjusted average total assets, and capital ratios as of December 31, 2014 in accordance with current regulatory standards (reflecting Basel III Transition Arrangements):
	In millions of	Stated		Well		Citigroup(1)			Citibank,
	dollars, except ratios	minimum		capitalized					N.A.(1)
				minimum
	Common Equity Tier 1 Capital					$	166,984		$	129,135
	Tier 1 Capital					166,984			129,135
	Total Capital(2)					185,280			140,119
	Risk-weighted assets					1,275,012			946,333
	Quarterly adjusted average total assets (3)					1,849,297			1,367,444
	Common Equity Tier 1 Capital ratio	4	%	N/A		13.1		%	13.65		%
	Tier 1 Capital ratio	5.5		6	%	13.1			13.65
	Total Capital ratio	8		10		14.53			14.81
	Tier 1 Leverage ratio	4		5.0 (4)		9.03			9.44
	-1	As of December 31, 2014, Citigroup’s and Citibank, N.A.’s reportable Common Equity Tier 1 Capital, Tier 1 Capital, and Total Capital ratios were the lower derived under the Basel III Advanced Approaches framework.
	-2	Total Capital includes Tier 1 Capital and Tier 2 Capital.
	-3	Tier 1 Leverage ratio denominator.
	(4)    Applicable only to depository institutions.
	N/A  Not Applicable
	As indicated in the table above, Citigroup and Citibank, N.A. were well capitalized under the current federal bank regulatory definitions as of December 31, 2014.
	Banking Subsidiaries—Constraints on Dividends
	There are various legal limitations on the ability of Citigroup’s subsidiary depository institutions to extend credit, pay dividends or otherwise supply funds to Citigroup and its non-bank subsidiaries. The approval of the Office of the Comptroller of the Currency is required if total dividends declared in any calendar year exceed amounts specified by the applicable agency’s regulations. State-chartered depository institutions are subject to dividend limitations imposed by applicable state law.
	In determining the dividends, each depository institution must also consider its effect on applicable risk-based capital and leverage ratio requirements, as well as policy statements of the federal regulatory agencies that indicate that banking organizations should generally pay dividends out of current operating earnings. Citigroup received $8.9 billion and $12.2 billion in dividends from Citibank, N.A. during 2014 and 2013, respectively.
	Non-Banking Subsidiaries
	Citigroup also receives dividends from its non-bank subsidiaries. These non-bank subsidiaries are generally not subject to regulatory restrictions on dividends, although their ability to declare dividends can be restricted by capital considerations, as set forth in the table below.
	In millions of dollars
	Subsidiary	Jurisdiction	Net			Excess over
			capital or equivalent			minimum requirement
	Citigroup Global Markets Inc.	U.S. Securities and Exchange Commission Uniform Net Capital Rule (Rule 15c3-1)	$	5,521		$	4,376
	Citigroup Global Markets Limited	United Kingdom’s Prudential Regulatory Authority (PRA)	$	7,162		$	2,482
	Citigroup Inc. Parent Company Only Income Statement and Statement of Comprehensive Income
		Years ended December 31,
	In millions of dollars	2014			2013			2012
	Revenues
	Interest revenue	$	3,121		$	3,234		$	3,384
	Interest expense	4,437			5,559			6,573
	Net interest expense	$	(1,316	)	$	(2,325	)	$	(3,189	)
	Dividends from subsidiaries	8,900			13,044			20,780
	Non-interest revenue	247			139			613
	Total revenues, net of interest expense	$	7,831		$	10,858		$	18,204
	Total operating expenses	$	1,980		$	851		$	1,497
	Income before taxes and equity in undistributed income of subsidiaries	$	5,851		$	10,007		$	16,707
	Benefit for income taxes	(643		)	(1,637		)	(2,062		)
	Equity in undistributed income (loss) of subsidiaries	819			2,029			(11,228		)
	Parent company’s net income	$	7,313		$	13,673		$	7,541
	Comprehensive income
	Parent company’s net income	$	7,313		$	13,673		$	7,541
	Other comprehensive income (loss)	(4,083		)	(2,237		)	892
	Parent company’s comprehensive income	$	3,230		$	11,436		$	8,433
	Citigroup Inc. Parent Company Only Balance Sheet
		Years ended December 31,
	In millions of dollars	2014			2013
	Assets
	Cash and due from banks	$	125		$	233
	Trading account assets	604			184
	Investments	830			1,032
	Advances to subsidiaries	77,951			83,110
	Investments in subsidiaries	211,353			203,739
	Other assets (1)	110,908			106,170
	Total assets	$	401,771		$	394,468
	Liabilities
	Federal funds purchased and securities loaned or sold under agreements to repurchase	$	185		$	185
	Trading account liabilities	762			165
Short-term borrowings	1,075			382
Long-term debt	149,512			156,804
Advances from subsidiaries other than banks	27,430			24,181
Other liabilities	12,273			8,412
Total liabilities	$	191,237		$	190,129
Total equity	210,534			204,339
Total liabilities and equity	$	401,771		$	394,468
-1	Other assets included $42.7 billion of placements to Citibank, N.A. and its branches at December 31, 2014, of which $33.9 billion had a remaining term of less than 30 days. Other assets at December 31, 2013 included $43.3 billion of placements to Citibank, N.A. and its branches, of which $33.6 billion had a remaining term of less than 30 days.
Citigroup Inc. Parent Company Only Cash Flows Statement
	Years ended December 31,
In millions of dollars	2014			2013			2012
Net cash provided by (used in ) operating activities of continuing operations	$	5,940		$	(7,881	)	$	1,598
Cash flows from investing activities of continuing operations
Purchases of investments	$	—		$	—		$	(5,701	)
Proceeds from sales of investments	41			385			37,056
Proceeds from maturities of investments	155			233			4,286
Changes in investments and advances—intercompany	(7,986		)	7,226			(397		)
Other investing activities	5			4			994
Net cash provided by investing activities of continuing operations	$	(7,785	)	$	7,848		$	36,238
Cash flows from financing activities of continuing operations
Dividends paid	$	(633	)	$	(314	)	$	(143	)
Issuance of preferred stock	3,699			4,192			2,250
Proceeds (repayments) from issuance of long-term debt—third-party, net	(3,636		)	(13,426		)	(33,434		)
Net change in short-term borrowings and other advances—intercompany	3,297			11,402			(6,160		)
Other financing activities	(990		)	(1,741		)	(199		)
Net cash provided by (used in) financing activities of continuing operations	$	1,737		$	113		$	(37,686	)
Net increase (decrease) in cash and due from banks	$	(108	)	$	80		$	150
Cash and due from banks at beginning of period	233			153			3
Cash and due from banks at end of period	$	125		$	233		$	153
Supplemental disclosure of cash flow information for continuing operations
Cash paid (received) during the year for
Income taxes	$	235		$	(71	)	$	78
Interest	5,632			6,514			7,883
Note: With respect to the tables above, “Citigroup Inc. Parent Company Only” refers to the parent holding company Citigroup Inc., excluding consolidated subsidiaries. Citigroup Funding Inc. (CFI) was previously a first-tier subsidiary of Citigroup Inc., issuing commercial paper, medium-term notes and structured equity-linked and credit-linked notes. The debt of CFI was guaranteed by Citigroup Inc. On December 31, 2012, CFI was merged into Citigroup Inc., the parent holding company.

CHANGES_IN_ACCUMULATED_OTHER_C

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	12 Months Ended
	Dec. 31, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	Changes in each component of Citigroup’s Accumulated other comprehensive income (loss) for the three years ended December 31, 2014 are as follows:
	In millions of dollars	Net			Cash flow hedges (1)			Benefit plans (2)			Foreign			Accumulated
		unrealized									currency			other
		gains (losses)									translation			comprehensive income (loss)
		on investment securities									adjustment,
											net of hedges (CTA)(3)(4)
	Balance, December 31, 2011	$	(35	)	$	(2,820	)	$	(4,282	)	$	(10,651	)	$	(17,788	)
	Change, net of taxes (5)(6)	632			527			(988		)	721			892
	Balance, December 31, 2012	$	597		$	(2,293	)	$	(5,270	)	$	(9,930	)	$	(16,896	)
	Other comprehensive income before reclassifications	$	(1,962	)	$	512		$	1,098		$	(2,534	)	$	(2,886	)
	Increase (decrease) due to amounts reclassified from AOCI (7)	(275		)	536			183			205			649
	Change, net of taxes (7)	$	(2,237	)	$	1,048		$	1,281		$	(2,329	)	$	(2,237	)
	Balance, December 31, 2013	$	(1,640	)	$	(1,245	)	$	(3,989	)	$	(12,259	)	$	(19,133	)
	Other comprehensive income before reclassifications	$	1,790		$	85		$	(1,346	)	$	(4,946	)	$	(4,417	)
	Increase (decrease) due to amounts reclassified from AOCI	(93		)	251			176			—			334
	Change, net of taxes	$	1,697		$	336		$	(1,170	)	$	(4,946	)	$	(4,083	)
	Balance at December 31, 2014	$	57		$	(909	)	$	(5,159	)	$	(17,205	)	$	(23,216	)
	-1	Primarily driven by Citigroup’s pay fixed/receive floating interest rate swap programs that hedge the floating rates on liabilities.
	-2	Primarily reflects adjustments based on the quarterly actuarial valuations of the Company’s significant pension and postretirement plans, annual actuarial valuations of all other plans, and amortization of amounts previously recognized in other comprehensive income. Reflects the adoption of new mortality tables effective December 31, 2014 (see Note 8 to the Consolidated Financial Statements).
	-3	Primarily reflects the movements in (by order of impact) the Mexican peso, euro, Japanese yen, and Russian ruble against the U.S. dollar, and changes in related tax effects and hedges for the year ended December 31, 2014. Primarily reflects the movements in (by order of impact) the Japanese yen, Mexican peso, Australian dollar, and Indian rupee against the U.S. dollar, and changes in related tax effects and hedges for the year ended December 31, 2013. Primarily reflects the movements in (by order of impact) the Mexican peso, Japanese yen, euro, and Brazilian real against the U.S. dollar, and changes in related tax effects and hedges for the year ended December 31, 2012.
	-4	During 2014, $137 million ($84 million net of tax) was reclassified to reflect the allocation of foreign currency translation between net unrealized gains (losses) on investment securities to CTA.
	-5	Includes the after-tax impact of realized gains from the sales of minority investments: $672 million from the Company’s entire interest in Housing Development Finance Corporation Ltd. (HDFC); and $421 million from the Company’s entire interest in Shanghai Pudong Development Bank (SPDB).
	-6	The after-tax impact due to impairment charges and the loss related to Akbank included within the foreign currency translation adjustment, during 2012 was $667 million (see Note 14 to the Consolidated Financial Statements).
	-7	On December 20, 2013, the sale of Credicard was completed (see Note 2 to the Consolidated Financial Statements). The total impact to the gross CTA (net CTA including hedges) was a pretax loss of $314 million ($205 million net of tax).
	The pretax and after-tax changes in each component of Accumulated other comprehensive income (loss) for the three years ended December 31, 2014 are as follows:
	In millions of dollars	Pretax			Tax effect			After-tax
	Balance, December 31, 2011	$	(25,807	)	$	8,019		$	(17,788	)
	Change in net unrealized gains (losses) on investment securities	1,001			(369		)	632
	Cash flow hedges	838			(311		)	527
	Benefit plans	(1,378		)	390			(988		)
	Foreign currency translation adjustment	12			709			721
	Change	$	473		$	419		$	892
	Balance, December 31, 2012	$	(25,334	)	$	8,438		$	(16,896	)
	Change in net unrealized gains (losses) on investment securities	(3,537		)	1,300			(2,237		)
	Cash flow hedges	1,673			(625		)	1,048
	Benefit plans	1,979			(698		)	1,281
	Foreign currency translation adjustment	(2,377		)	48			(2,329		)
	Change	$	(2,262	)	$	25		$	(2,237	)
	Balance, December 31, 2013	$	(27,596	)	$	8,463		$	(19,133	)
	Change in net unrealized gains (losses) on investment securities	2,704			(1,007		)	1,697
	Cash flow hedges	543			(207		)	336
	Benefit plans	(1,830		)	660			(1,170		)
	Foreign currency translation adjustment	(4,881		)	(65		)	(4,946		)
	Change	$	(3,464	)	$	(619	)	$	(4,083	)
	Balance, December 31, 2014	$	(31,060	)	$	7,844		$	(23,216	)
	During the year ended December 31, 2014, the Company recognized a pretax loss of $542 million ($334 million net of tax) related to amounts reclassified out of Accumulated other comprehensive income (loss) into the Consolidated Statement of Income. See details in the table below:
			Increase (decrease) in AOCI due to amounts reclassified to Consolidated Statement of Income
	In millions of dollars		Year ended December 31, 2014
	Realized (gains) losses on sales of investments		$	(570	)
	OTTI gross impairment losses		424
	Subtotal, pretax		$	(146	)
	Tax effect		53
	Net realized (gains) losses on investment securities, after-tax(1)		$	(93	)
	Interest rate contracts		$	260
	Foreign exchange contracts		149
	Subtotal, pretax		$	409
	Tax effect		(158		)
	Amortization of cash flow hedges, after-tax(2)		$	251
	Amortization of unrecognized
	Prior service cost (benefit)		$	(40	)
	Net actuarial loss		243
	Curtailment/settlement impact (3)		76
	Subtotal, pretax		$	279
Tax effect		(103		)
Amortization of benefit plans, after-tax(3)		$	176
Foreign currency translation adjustment		$	—
Total amounts reclassified out of AOCI, pretax		$	542
Total tax effect		(208		)
Total amounts reclassified out of AOCI, after-tax		$	334
-1	The pretax amount is reclassified to Realized gains (losses) on sales of investments, net and Gross impairment losses on the Consolidated Statement of Income. See Note 14 to the Consolidated Financial Statements for additional details.
-2	See Note 23 to the Consolidated Financial Statements for additional details.
-3	See Notes 1 and 8 to the Consolidated Financial Statements for additional details.
During the year ended December 31, 2013, the Company recognized a pretax loss of $1,071 million ($649 million net of tax) related to amounts reclassified out of Accumulated other comprehensive income (loss) into the Consolidated Statement of Income. See details in the table below:
		Increase (decrease) in AOCI due to amounts reclassified to Consolidated Statement of Income
In millions of dollars		Year ended December 31, 2013
Realized (gains) losses on sales of investments		$	(748	)
OTTI gross impairment losses		334
Subtotal, pretax		$	(414	)
Tax effect		139
Net realized (gains) losses on investment securities, after-tax(1)		$	(275	)
Interest rate contracts		$	700
Foreign exchange contracts		176
Subtotal, pretax		$	876
Tax effect		(340		)
Amortization of cash flow hedges, after-tax(2)		$	536
Amortization of unrecognized
Prior service cost (benefit)		$	—
Net actuarial loss		271
Curtailment/settlement impact(3)		44
Cumulative effect of change in accounting policy(3)		(20		)
Subtotal, pretax		$	295
Tax effect		(112		)
Amortization of benefit plans, after-tax(3)		$	183
Foreign currency translation adjustment		$	205
Total amounts reclassified out of AOCI, pretax		$	1,071
Total tax effect		(422		)
Total amounts reclassified out of AOCI, after-tax		$	649
-1	The pretax amount is reclassified to Realized gains (losses) on sales of investments, net and Gross impairment losses on the Consolidated Statement of Income. See Note 14 to the Consolidated Financial Statements for additional details.
-2	See Note 23 to the Consolidated Financial Statements for additional details.
-3	See Notes 1 and 8 to the Consolidated Financial Statements for additional details.

PREFERRED_STOCK

PREFERRED STOCK	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
PREFERRED STOCK	PREFERRED STOCK
	The following table summarizes the Company’s preferred stock outstanding at December 31, 2014 and December 31, 2013:
									Carrying value
									in millions of dollars
		Issuance date	Redeemable by issuer beginning	Dividend		Redemption		Number	December 31,		December 31,
				rate		price per depositary		of depositary	2014		2013
						share/preference share		shares
	Series AA(1)	25-Jan-08	15-Feb-18	8.125	%	$	25	3,870,330	$	97	$	97
	Series E(2)	28-Apr-08	30-Apr-18	8.4	%	1,000		121,254	121		121
	Series A(3)	29-Oct-12	30-Jan-23	5.95	%	1,000		1,500,000	1,500		1,500
	Series B(4)	13-Dec-12	15-Feb-23	5.9	%	1,000		750,000	750		750
	Series C(5)	26-Mar-13	22-Apr-18	5.8	%	25		23,000,000	575		575
	Series D(6)	30-Apr-13	15-May-23	5.35	%	1,000		1,250,000	1,250		1,250
	Series J(7)	19-Sep-13	30-Sep-23	7.125	%	25		38,000,000	950		950
	Series K(8)	31-Oct-13	15-Nov-23	6.875	%	25		59,800,000	1,495		1,495
	Series L(9)	12-Feb-14	12-Feb-19	6.875	%	25		19,200,000	480		—
	Series M(10)	30-Apr-14	15-May-24	6.3	%	1,000		1,750,000	1,750		—
	Series N(11)	29-Oct-14	15-Nov-19	5.8	%	1,000		1,500,000	1,500		—
									$	10,468	$	6,738
	-1	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on February 15, May 15, August 15 and November 15 when, as and if declared by the Citi Board of Directors.
	-2	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on April 30 and October 30 at a fixed rate until April 30, 2018, thereafter payable quarterly on January 30, April 30, July 30 and October 30 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-3	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on January 30 and July 30 at a fixed rate until January 30, 2023, thereafter payable quarterly on January 30, April 30, July 30 and October 30 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-4	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on February 15 and August 15 at a fixed rate until February 15, 2023, thereafter payable quarterly on February 15, May 15, August 15 and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-5	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on January 22, April 22, July 22 and October 22 when, as and if declared by the Citi Board of Directors.
	-6	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on May 15 and November 15 at a fixed rate until May 15, 2023, thereafter payable quarterly on February 15, May 15, August 15 and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-7	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on March 30, June 30, September 30 and December 30 at a fixed rate until September 30, 2023, thereafter payable quarterly on the same dates at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-8	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on February 15, May 15, August 15 and November 15 at a fixed rate until November 15, 2023, thereafter payable quarterly on the same dates at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-9	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on February 12, May 12, August 12 and November 12 at a fixed rate, in each case when, as and if declared by the Citi Board of Directors.
	-10	Issued as depository shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on May 15 and November 15 at a fixed rate until May 15, 2024, thereafter payable quarterly on February 15, May 15, August 15, and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-11	Issued as depository shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on May 15 and November 15 at a fixed rate until, but excluding, November 15, 2019, and thereafter payable quarterly on February 15, May 15, August 15 and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	During 2014, Citi distributed approximately $511 million in dividends on its outstanding preferred stock. Based on its preferred stock outstanding as of December 31, 2014, Citi estimates it will distribute preferred dividends of approximately $656 million during 2015, in each case assuming such dividends are approved by the Citi Board of Directors.

SECURITIZATIONS_AND_VARIABLE_I

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES	12 Months Ended
	Dec. 31, 2014
SECURITIZATIONS AND VARIABLE INTEREST ENTITIES
SECURITIZATIONS AND VARIABLE INTEREST ENTITIES	SECURITIZATIONS AND VARIABLE INTEREST ENTITIES
	Uses of Special Purpose Entities
	A special purpose entity (SPE) is an entity designed to fulfill a specific limited need of the company that organized it. The principal uses of SPEs by Citi are to obtain liquidity and favorable capital treatment by securitizing certain financial assets, to assist clients in securitizing their financial assets and to create investment products for clients. SPEs may be organized in various legal forms, including trusts, partnerships or corporations. In a securitization, the company transferring assets to an SPE converts all (or a portion) of those assets into cash before they would have been realized in the normal course of business through the SPE’s issuance of debt and equity instruments, certificates, commercial paper or other notes of indebtedness. These issuances are recorded on the balance sheet of the SPE, which may or may not be consolidated onto the balance sheet of the company that organized the SPE.
	Investors usually have recourse only to the assets in the SPE, but may also benefit from other credit enhancements, such as a collateral account, a line of credit or a liquidity facility, such as a liquidity put option or asset purchase agreement. Because of these enhancements, the SPE issuances typically obtain a more favorable credit rating than the transferor could obtain for its own debt issuances. This results in less expensive financing costs than unsecured debt. The SPE may also enter into derivative contracts in order to convert the yield or currency of the underlying assets to match the needs of the SPE investors or to limit or change the credit risk of the SPE. Citigroup may be the provider of certain credit enhancements as well as the counterparty to any related derivative contracts.
	Most of Citigroup’s SPEs are variable interest entities (VIEs), as described below.
	Variable Interest Entities
	VIEs are entities that have either a total equity investment that is insufficient to permit the entity to finance its activities without additional subordinated financial support, or whose equity investors lack the characteristics of a controlling financial interest (i.e., ability to make significant decisions through voting rights and a right to receive the expected residual returns of the entity or an obligation to absorb the expected losses of the entity). Investors that finance the VIE through debt or equity interests or other counterparties providing other forms of support, such as guarantees, subordinated fee arrangements or certain types of derivative contracts are variable interest holders in the entity.
	The variable interest holder, if any, that has a controlling financial interest in a VIE is deemed to be the primary beneficiary and must consolidate the VIE. Citigroup would be deemed to have a controlling financial interest and be the primary beneficiary if it has both of the following characteristics:
	•	power to direct the activities of the VIE that most significantly impact the entity’s economic performance; and
	•	an obligation to absorb losses of the entity that could potentially be significant to the VIE, or a right to receive benefits from the entity that could potentially be significant to the VIE.
	The Company must evaluate each VIE to understand the purpose and design of the entity, the role the Company had in the entity’s design and its involvement in the VIE’s ongoing activities. The Company then must evaluate which activities most significantly impact the economic performance of the VIE and who has the power to direct such activities.
	For those VIEs where the Company determines that it has the power to direct the activities that most significantly impact the VIE’s economic performance, the Company must then evaluate its economic interests, if any, and determine whether it could absorb losses or receive benefits that could potentially be significant to the VIE. When evaluating whether the Company has an obligation to absorb losses that could potentially be significant, it considers the maximum exposure to such loss without consideration of probability. Such obligations could be in various forms, including, but not limited to, debt and equity investments, guarantees, liquidity agreements and certain derivative contracts.
	In various other transactions, the Company may: (i) act as a derivative counterparty (for example, interest rate swap, cross-currency swap, or purchaser of credit protection under a credit default swap or total return swap where the Company pays the total return on certain assets to the SPE); (ii) act as underwriter or placement agent; (iii) provide administrative, trustee or other services; or (iv) make a market in debt securities or other instruments issued by VIEs. The Company generally considers such involvement, by itself, not to be variable interests and thus not an indicator of power or potentially significant benefits or losses.
	See Note 1 to the Consolidated Financial Statements for a discussion of impending changes to targeted areas of consolidation guidance.
	Citigroup’s involvement with consolidated and unconsolidated VIEs with which the Company holds significant variable interests or has continuing involvement through servicing a majority of the assets in a VIE, each as of December 31, 2014 and 2013, is presented below:
		As of December 31, 2014
											Maximum exposure to loss in significant unconsolidated VIEs (1)
											Funded exposures (2)				Unfunded exposures
	In millions of dollars	Total			Consolidated			Significant			Debt		Equity		Funding		Guarantees		Total
		involvement			VIE / SPE assets			unconsolidated			investments		investments		commitments		and
		with SPE						VIE assets (3)									derivatives
		assets
	Citicorp
	Credit card securitizations	$	60,211		$	60,211		$	—		$	—	$	—	$	—	$	—	$	—
	Mortgage securitizations (4)
	U.S. agency-sponsored	236,771			—			236,771			5,063		—		—		19		5,082
	Non-agency-sponsored	8,071			1,239			6,832			560		—		—		—		560
	Citi-administered asset-backed commercial paper conduits (ABCP)	29,181			29,181			—			—		—		—		—		—
	Collateralized debt obligations (CDOs)	3,382			—			3,382			45		—		—		—		45
	Collateralized loan obligations (CLOs)	13,099			—			13,099			1,692		—		—		—		1,692
	Asset-based financing	62,577			1,149			61,428			22,891		63		2,185		333		25,472
	Municipal securities tender option bond trusts (TOBs)	12,280			6,671			5,609			3		—		3,670		—		3,673
	Municipal investments	16,825			70			16,755			2,012		2,021		1,321		—		5,354
	Client intermediation	1,745			137			1,608			10		—		—		10		20
	Investment funds (5)	31,474			1,096			30,378			16		382		124		—		522
	Trust preferred securities	2,633			—			2,633			—		6		—		—		6
	Other	5,685			296			5,389			183		1,451		23		73		1,730
	Total	$	483,934		$	100,050		$	383,884		$	32,475	$	3,923	$	7,323	$	435	$	44,156
	Citi Holdings
	Credit card securitizations	$	292		$	60		$	232		$	—	$	—	$	—	$	—	$	—
	Mortgage securitizations
	U.S. agency-sponsored	28,077			—			28,077			150		—		—		91		241
	Non-agency-sponsored	9,817			65			9,752			17		—		—		1		18
	Collateralized debt obligations (CDOs)	2,235			—			2,235			174		—		—		86		260
	Collateralized loan obligations (CLOs)	1,020			—			1,020			54		—		—		—		54
	Asset-based financing	1,323			2			1,321			37		3		86		—		126
	Municipal investments	6,881			—			6,881			2		176		904		—		1,082
	Investment funds	518			—			518			—		—		—		—		—
	Other	2,613			2,613			—			—		—		—		—		—
	Total	$	52,776		$	2,740		$	50,036		$	434	$	179	$	990	$	178	$	1,781
	Total Citigroup	$	536,710		$	102,790		$	433,920		$	32,909	$	4,102	$	8,313	$	613	$	45,937
	(1)    The definition of maximum exposure to loss is included in the text that follows this table.
	-2	Included on Citigroup’s December 31, 2014 Consolidated Balance Sheet.
	-3	A significant unconsolidated VIE is an entity where the Company has any variable interest or continuing involvement considered to be significant, regardless of the likelihood of loss or the notional amount of exposure.
	-4	Citicorp mortgage securitizations also include agency and non-agency (private-label) re-securitization activities. These SPEs are not consolidated. See “Re-securitizations” below for further discussion.
	(5) Substantially all of the unconsolidated investment funds’ assets are related to retirement funds in Mexico managed by Citi. See “Investment Funds” below for further discussion.
		As of December 31, 2013
											Maximum exposure to loss in significant unconsolidated VIEs (1)
											Funded exposures (2)				Unfunded exposures
	In millions of dollars	Total			Consolidated			Significant			Debt		Equity		Funding		Guarantees		Total
		involvement			VIE / SPE assets			unconsolidated			investments		investments		commitments		and
		with SPE						VIE assets (3)									derivatives
		assets
	Citicorp
Credit card securitizations	$	52,229		$	52,229		$	—		$	—	$	—	$	—	$	—	$	—
Mortgage securitizations (4)
U.S. agency-sponsored	239,204			—			239,204			3,583		—		—		36		3,619
Non-agency-sponsored	7,711			598			7,113			583		—		—		—		583
Citi-administered asset-backed commercial paper conduits (ABCP)	31,759			31,759			—			—		—		—		—		—
Collateralized debt obligations (CDOs)	4,204			—			4,204			34		—		—		—		34
Collateralized loan obligations (CLOs)	16,883			—			16,883			1,938		—		—		—		1,938
Asset-based financing	45,884			971			44,913			17,341		74		1,004		195		18,614
Municipal securities tender option bond trusts (TOBs)	12,716			7,039			5,677			29		—		3,881		—		3,910
Municipal investments	15,962			223			15,739			1,846		2,073		1,173		—		5,092
Client intermediation	1,778			195			1,583			145		—		—		—		145
Investment funds (5)	32,324			3,094			29,230			191		264		81		—		536
Trust preferred securities	4,822			—			4,822			—		51		—		—		51
Other	2,439			225			2,214			143		649		20		78		890
Total	$	467,915		$	96,333		$	371,582		$	25,833	$	3,111	$	6,159	$	309	$	35,412
Citi Holdings
Credit card securitizations	$	1,867		$	1,448		$	419		$	—	$	—	$	—	$	—	$	—
Mortgage securitizations
U.S. agency-sponsored	73,549			—			73,549			549		—		—		77		626
Non-agency-sponsored	13,193			1,695			11,498			35		—		—		2		37
Student loan securitizations	1,520			1,520			—			—		—		—		—		—
Collateralized debt obligations (CDOs)	3,879			—			3,879			273		—		—		87		360
Collateralized loan obligations (CLOs)	2,733			—			2,733			358		—		—		111		469
Asset-based financing	3,508			3			3,505			629		3		258		—		890
Municipal investments	7,304			—			7,304			3		204		939		—		1,146
Investment funds	1,237			—			1,237			—		61		—		—		61
Other	4,494			4,434			60			—		—		—		—		—
Total	$	113,284		$	9,100		$	104,184		$	1,847	$	268	$	1,197	$	277	$	3,589
Total Citigroup	$	581,199		$	105,433		$	475,766		$	27,680	$	3,379	$	7,356	$	586	$	39,001
-1	The definition of maximum exposure to loss is included in the text that follows this table.
-2	Included on Citigroup’s December 31, 2013 Consolidated Balance Sheet.
-3	A significant unconsolidated VIE is an entity where the Company has any variable interest or continuing involvement considered to be significant, regardless of the likelihood of loss or the notional amount of exposure.
-4	Citicorp mortgage securitizations also include agency and non-agency (private-label) re-securitization activities. These SPEs are not consolidated. See “Re-securitizations” below for further discussion.
(5) Substantially all of the unconsolidated investment funds’ assets are related to retirement funds in Mexico managed by Citi. See “Investment Funds” below for further discussion.
The previous tables do not include:
•	certain venture capital investments made by some of the Company’s private equity subsidiaries, as the Company accounts for these investments in accordance with the Investment Company Audit Guide (codified in ASC 946);
•	certain limited partnerships that are investment funds that qualify for the deferral from the requirements of ASC 810 where the Company is the general partner and the limited partners have the right to replace the general partner or liquidate the funds;
•	certain investment funds for which the Company provides investment management services and personal estate trusts for which the Company provides administrative, trustee and/or investment management services;
•	VIEs structured by third parties where the Company holds securities in inventory, as these investments are made on arm’s-length terms;
•	certain positions in mortgage-backed and asset-backed securities held by the Company, which are classified as Trading account assets or Investments, where the Company has no other involvement with the related securitization entity deemed to be significant (for more information on these positions, see Notes 13 and 14 to the Consolidated Financial Statements);
•	certain representations and warranties exposures in legacy Securities and Banking-sponsored mortgage-backed and asset-backed securitizations, where the Company has no variable interest or continuing involvement as servicer. The outstanding balance of mortgage loans securitized during 2005 to 2008 where the Company has no variable interest or continuing involvement as servicer was approximately $14 billion and $16 billion at December 31, 2014 and 2013, respectively; and
•	certain representations and warranties exposures in Citigroup residential mortgage securitizations, where the original mortgage loan balances are no longer outstanding.
The asset balances for consolidated VIEs represent the carrying amounts of the assets consolidated by the Company. The carrying amount may represent the amortized cost or the current fair value of the assets depending on the legal form of the asset (e.g., security or loan) and the Company’s standard accounting policies for the asset type and line of business.
The asset balances for unconsolidated VIEs where the Company has significant involvement represent the most current information available to the Company. In most cases, the asset balances represent an amortized cost basis without regard to impairments in fair value, unless fair value information is readily available to the Company. For VIEs that obtain asset exposures synthetically through derivative instruments (for example, synthetic CDOs), the tables generally include the full original notional amount of the derivative as an asset balance.
The maximum funded exposure represents the balance sheet carrying amount of the Company’s investment in the VIE. It reflects the initial amount of cash invested in the VIE adjusted for any accrued interest and cash principal payments received. The carrying amount may also be adjusted for increases or declines in fair value or any impairment in value recognized in earnings. The maximum exposure of unfunded positions represents the remaining undrawn committed amount, including liquidity and credit facilities provided by the Company, or the notional amount of a derivative instrument considered to be a variable interest. In certain transactions, the Company has entered into derivative instruments or other arrangements that are not considered variable interests in the VIE (e.g., interest rate swaps, cross-currency swaps, or where the Company is the purchaser of credit protection under a credit default swap or total return swap where the Company pays the total return on certain assets to the SPE). Receivables under such arrangements are not included in the maximum exposure amounts.
Funding Commitments for Significant Unconsolidated VIEs—Liquidity Facilities and Loan Commitments
The following table presents the notional amount of liquidity facilities and loan commitments that are classified as funding commitments in the VIE tables above as of December 31, 2014 and 2013:
	December 31, 2014						December 31, 2013
	Liquidity			Loan			Liquidity			Loan
In millions of dollars	facilities			commitments			facilities			commitments
Citicorp
Asset-based financing	$	5		$	2,180		$	5		$	999
Municipal securities tender option bond trusts (TOBs)	3,670			—			3,881			—
Municipal investments	—			1,321			—			1,173
Investment funds	—			124			—			81
Other	—			23			—			20
Total Citicorp	$	3,675		$	3,648		$	3,886		$	2,273
Citi Holdings
Asset-based financing	$	—		$	86		$	—		$	258
Municipal investments	—			904			—			939
Total Citi Holdings	$	—		$	990		$	—		$	1,197
Total Citigroup funding commitments	$	3,675		$	4,638		$	3,886		$	3,470
Citicorp and Citi Holdings Consolidated VIEs
The Company engages in on-balance sheet securitizations, which are securitizations that do not qualify for sales treatment; thus, the assets remain on the Company’s balance sheet, and any proceeds received are recognized as secured liabilities. The consolidated VIEs included in the tables below represent hundreds of separate entities with which the Company is involved. In general, the third-party investors in the obligations of consolidated VIEs have legal recourse only to the assets of the respective VIEs and do not have such recourse to the Company, except where the Company has provided a guarantee to the investors or is the counterparty to certain derivative transactions involving the VIE. Thus, the
Company’s maximum legal exposure to loss related to consolidated VIEs is significantly less than the carrying value of the consolidated VIE assets due to outstanding third-party financing. Intercompany assets and liabilities are excluded from the table. All VIE assets are restricted from being sold or pledged as collateral. The cash flows from these assets are the only source used to pay down the associated liabilities, which are non-recourse to the Company’s general assets.
The following table presents the carrying amounts and classifications of consolidated assets that are collateral for consolidated VIE obligations as of December 31, 2014 and 2013:
	December 31, 2014									December 31, 2013
In billions of dollars	Citicorp			Citi Holdings			Citigroup			Citicorp		Citi Holdings		Citigroup
Cash	$	0.1		$	0.2		$	0.3		$	0.2	$	0.2	$	0.4
Trading account assets	0.7			—			0.7			1		—		1
Investments	8			—			8			10.9		—		10.9
Total loans, net	90.6			2.5			93.1			83.2		8.7		91.9
Other	0.6			—			0.6			1.1		0.2		1.3
Total assets	$	100		$	2.7		$	102.7		$	96.4	$	9.1	$	105.5
Short-term borrowings	$	22.7		$	—		$	22.7		$	24.3	$	—	$	24.3
Long-term debt	38.1			2			40.1			32.8		2		34.8
Other liabilities	0.8			0.1			0.9			0.9		0.1		1
Total liabilities	$	61.6		$	2.1		$	63.7		$	58	$	2.1	$	60.1
Citicorp and Citi Holdings Significant Interests in Unconsolidated VIEs—Balance Sheet Classification
The following table presents the carrying amounts and classification of significant variable interests in unconsolidated VIEs as of December 31, 2014 and 2013:
	December 31, 2014									December 31, 2013
In billions of dollars	Citicorp			Citi Holdings			Citigroup			Citicorp		Citi Holdings		Citigroup
Trading account assets	$	7.4		$	0.2		$	7.6		$	4.8	$	0.6	$	5.4
Investments	2.4			0.2			2.6			3.7		0.4		4.1
Total loans, net	24.9			0.1			25			18.2		0.6		18.8
Other	1.8			0.2			2			2.2		0.5		2.7
Total assets	$	36.5		$	0.7		$	37.2		$	28.9	$	2.1	$	31
Credit Card Securitizations
The Company securitizes credit card receivables through trusts established to purchase the receivables. Citigroup transfers receivables into the trusts on a non-recourse basis. Credit card securitizations are revolving securitizations; as customers pay their credit card balances, the cash proceeds are used to purchase new receivables and replenish the receivables in the trust.
Substantially all of the Company’s credit card securitization activity is through two trusts—Citibank Credit Card Master Trust (Master Trust) and the Citibank Omni Master Trust (Omni Trust), with the substantial majority through the Master Trust. These trusts are consolidated entities because, as servicer, Citigroup has the power to direct the activities that most significantly impact the economic performance of the trusts, Citigroup holds a seller’s interest and certain securities issued by the trusts, and also provides liquidity facilities to the trusts, which could result in potentially significant losses or benefits from the trusts. Accordingly, the transferred credit card receivables remain on Citi’s Consolidated Balance Sheet with no gain or loss recognized. The debt issued by the trusts to third parties is included in Citi’s Consolidated Balance Sheet.
The Company utilizes securitizations as one of the sources of funding for its business in North America. The following table reflects amounts related to the Company’s securitized credit card receivables as of December 31, 2014 and 2013:
	Citicorp						Citi Holdings
In billions of dollars	December 31,			December 31, 2013			December 31,			December 31, 2013
	2014						2014
Ownership interests in principal amount of trust credit card receivables
Sold to investors via trust-issued securities	$	37		$	32.3		$	—		$	—
Retained by Citigroup as trust-issued securities	10.1			8.1			—			1.3
Retained by Citigroup via non-certificated interests	14.2			12.1			—			—
Total ownership interests in principal amount of trust credit card receivables	$	61.3		$	52.5		$	—		$	1.3
Credit Card Securitizations—Citicorp
The following table summarizes selected cash flow information related to Citicorp’s credit card securitizations for the years ended December 31, 2014, 2013 and 2012:
In billions of dollars	2014			2013			2012
Proceeds from new securitizations	$	12.5		$	11.5		$	0.5
Pay down of maturing notes	(7.8		)	(2.1		)	(20.4		)
Credit Card Securitizations—Citi Holdings
The following table summarizes selected cash flow information related to Citi Holdings’ credit card securitizations for the years ended December 31, 2014, 2013 and 2012:
In billions of dollars	2014			2013			2012
Proceeds from new securitizations	$	0.1		$	0.2		$	1.7
Pay down of maturing notes	—			(0.1		)	(0.1		)
Managed Loans
After securitization of credit card receivables, the Company continues to maintain credit card customer account relationships and provides servicing for receivables transferred to the trusts. As a result, the Company considers the securitized credit card receivables to be part of the business it manages. As Citigroup consolidates the credit card trusts, all managed securitized card receivables are on-balance sheet.
Funding, Liquidity Facilities and Subordinated Interests
As noted above, Citigroup securitizes credit card receivables through two securitization trusts—Master Trust, which is part of Citicorp, and Omni Trust, which is also substantially all part of Citicorp. The liabilities of the trusts are included in the Consolidated Balance Sheet, excluding those retained by Citigroup.
Master Trust issues fixed- and floating-rate term notes. Some of the term notes are issued to multi-seller commercial paper conduits. The weighted average maturity of the term notes issued by the Master Trust was 2.8 years as of December 31, 2014 and 3.1 years as of December 31, 2013.
Master Trust Liabilities (at par value)
In billions of dollars	Dec. 31, 2014			Dec. 31, 2013
Term notes issued to third parties	$	35.7		$	27.9
Term notes retained by Citigroup affiliates	8.2			6.2
Total Master Trust liabilities	$	43.9		$	34.1
The Omni Trust issues fixed- and floating-rate term notes, some of which are purchased by multi-seller commercial paper conduits. The weighted average maturity of the third-party term notes issued by the Omni Trust was 1.9 years as of December 31, 2014 and 0.7 years as of December 31, 2013.
Omni Trust Liabilities (at par value)
In billions of dollars	Dec. 31, 2014			Dec. 31, 2013
Term notes issued to third parties	$	1.3		$	4.4
Term notes retained by Citigroup affiliates	1.9			1.9
Total Omni Trust liabilities	$	3.2		$	6.3
Mortgage Securitizations
The Company provides a wide range of mortgage loan products to a diverse customer base. Once originated, the Company often securitizes these loans through the use of VIEs. These VIEs are funded through the issuance of trust certificates backed solely by the transferred assets. These certificates have the same life as the transferred assets. In addition to providing a source of liquidity and less expensive funding, securitizing these assets also reduces the Company’s credit exposure to the borrowers. These mortgage loan securitizations are primarily non-recourse, thereby effectively transferring the risk of future credit losses to the purchasers of the securities issued by the trust. However, the Company’s U.S. consumer mortgage business generally retains the servicing rights and in certain instances retains investment securities, interest-only strips and residual interests in future cash flows from the trusts and also provides servicing for a limited number of ICG securitizations. ICG and Citi Holdings do not retain servicing for their mortgage securitizations.
The Company securitizes mortgage loans generally through either a government-sponsored agency, such as Ginnie Mae, Fannie Mae or Freddie Mac (U.S. agency-sponsored mortgages), or private-label (non-agency-sponsored mortgages) securitization. The Company is not the primary beneficiary of its U.S. agency-sponsored mortgage securitizations because Citigroup does not have the power to direct the activities of the VIE that most significantly impact the entities’ economic performance. Therefore, Citi does not consolidate these U.S. agency-sponsored mortgage securitizations.
The Company does not consolidate certain non-agency-sponsored mortgage securitizations because Citi is either not the servicer with the power to direct the significant activities of the entity or Citi is the servicer but the servicing relationship is deemed to be a fiduciary relationship and, therefore, Citi is not deemed to be the primary beneficiary of the entity.
In certain instances, the Company has (i) the power to direct the activities and (ii) the obligation to either absorb losses or the right to receive benefits that could be potentially significant to its non-agency-sponsored mortgage securitizations and, therefore, is the primary beneficiary and thus consolidates the VIE.
Mortgage Securitizations—Citicorp
The following table summarizes selected cash flow information related to Citicorp mortgage securitizations for the years ended December 31, 2014, 2013 and 2012:
	2014						2013			2012
In billions of dollars	U.S. agency-			Non-agency-			Agency- and			Agency- and
	sponsored			sponsored			non-agency-			non-agency-
	mortgages			mortgages			sponsored			sponsored
							mortgages			mortgages
Proceeds from new securitizations	$	27.4		$	11.8		$	72.5		$	56.5
Contractual servicing fees received	0.4			—			0.4			0.5
Cash flows received on retained interests and other net cash flows	0.1			—			0.1			0.1
Agency and non-agency securitization gains for the year ended December 31, 2014 were $160 million and $53 million, respectively.
Agency and non-agency securitization gains for the years ended December 31, 2013 and 2012 were $203 million and $30 million, respectively.
Key assumptions used in measuring the fair value of retained interests at the date of sale or securitization of mortgage receivables for the years ended December 31, 2014 and 2013 were as follows:
	December 31, 2014
			Non-agency-sponsored mortgages (1)
	U.S. agency-		Senior		Subordinated
	sponsored mortgages		interests		interests
Discount rate	0.0% to 14.7%		1.4% to 6.6%		2.6% to 9.1%
Weighted average discount rate	11	%	4.2	%	7.8	%
Constant prepayment rate	0.0% to 23.1%		0.0% to 7.0%		0.5% to 8.9%
Weighted average constant prepayment rate	6.2	%	5.4	%	3.2	%
Anticipated net credit losses (2)	NM		40.0% to 67.1%		8.9% to 58.5%
Weighted average anticipated net credit losses	NM		56.3	%	43.1	%
Weighted average life	0.0 to 9.7 years		2.6 to 11.1 years		3.0 to 14.5 years
	December 31, 2013
			Non-agency-sponsored mortgages (1)
	U.S. agency-		Senior		Subordinated
	sponsored mortgages		interests		interests
Discount rate	0.0% to 12.4%		2.3% to 4.3%		0.1% to 19.2%
Weighted average discount rate	10.1	%	3.4	%	7.8	%
Constant prepayment rate	0.0% to 21.4%		5.4% to 10.0%		0.1% to 11.2%
Weighted average constant prepayment rate	5.5	%	7.2	%	7.5	%
Anticipated net credit losses (2)	NM		47.2% to 53.0%		0.1% to 89.0%
Weighted average anticipated net credit losses	NM		49.3	%	49.2	%
Weighted average life	0.0 to 12.4 years		2.9 to 9.7 years		2.5 to 16.5 years
-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
-2	Anticipated net credit losses represent estimated loss severity associated with defaulted mortgage loans underlying the mortgage securitizations disclosed above. Anticipated net credit losses, in this instance, do not represent total credit losses incurred to date, nor do they represent credit losses expected on retained interests in mortgage securitizations.
NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
The interests retained by the Company range from highly rated and/or senior in the capital structure to unrated and/or residual interests.
At December 31, 2014 and 2013, the key assumptions used to value retained interests, and the sensitivity of the fair value to adverse changes of 10% and 20% in each of the key assumptions, are set forth in the tables below. The negative effect of each change is calculated independently, holding all other assumptions constant. Because the key assumptions may not be independent, the net effect of simultaneous adverse changes in the key assumptions may be less than the sum of the individual effects shown below.
	December 31, 2014
			Non-agency-sponsored mortgages (1)
	U.S. agency-		Senior		Subordinated
	sponsored mortgages		interests		interests
Discount rate	0.0% to 21.2%		1.1% to 17.7%		1.3% to 19.6%
Weighted average discount rate	8	%	4.9	%	8.2	%
Constant prepayment rate	6.0% to 41.4%		2.0% to 100.0%		0.5% to 16.2%
Weighted average constant prepayment rate	14.7	%	10.1	%	7.2	%
Anticipated net credit losses (2)	NM		0.0% to 92.4%		13.7% to 83.8%
Weighted average anticipated net credit losses	NM		54.6	%	52.5	%
Weighted average life	0.0 to 16.0 years		0.3 to 14.4 years		0.0 to 24.4 years
	December 31, 2013
			Non-agency-sponsored mortgages (1)
	U.S. agency-		Senior		Subordinated
	sponsored mortgages		interests		interests
Discount rate	0.1% to 20.9%		0.5% to 17.4%		2.1% to 19.6%
Weighted average discount rate	6.9	%	5.5	%	11.2	%
Constant prepayment rate	6.2% to 30.4%		1.3% to 100.0%		1.4% to 23.1%
Weighted average constant prepayment rate	11.1	%	6.4	%	7.4	%
Anticipated net credit losses (2)	NM		0.1% to 80.0%		25.5% to 81.9%
Weighted average anticipated net credit losses	NM		49.5	%	52.8	%
Weighted average life	2.1 to 14.1 years		0.0 to 11.9 years		0.0 to 26.0 years
-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
-2	Anticipated net credit losses represent estimated loss severity associated with defaulted mortgage loans underlying the mortgage securitizations disclosed above. Anticipated net credit losses, in this instance, do not represent total credit losses incurred to date, nor do they represent credit losses expected on retained interests in mortgage securitizations.
NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
				Non-agency-sponsored mortgages (1)
In millions of dollars at December 31, 2014	U.S. agency-			Senior			Subordinated
	sponsored mortgages			interests			interests
Carrying value of retained interests	$	2,224		$	285		$	554
Discount rates
Adverse change of 10%	$	(64	)	$	(5	)	$	(30	)
Adverse change of 20%	(124		)	(9		)	(57		)
Constant prepayment rate
Adverse change of 10%	(86		)	(1		)	(9		)
Adverse change of 20%	(165		)	(2		)	(18		)
Anticipated net credit losses
Adverse change of 10%	NM			(2		)	(9		)
Adverse change of 20%	NM			(3		)	(16		)
				Non-agency-sponsored mortgages (1)
In millions of dollars at December 31, 2013	U.S. agency-			Senior			Subordinated
	sponsored mortgages			interests			interests
Carrying value of retained interests	$	2,519		$	293		$	429
Discount rates
Adverse change of 10%	$	(76	)	$	(6	)	$	(25	)
Adverse change of 20%	(148		)	(11		)	(48		)
Constant prepayment rate
Adverse change of 10%	(96		)	(1		)	(7		)
Adverse change of 20%	(187		)	(2		)	(14		)
Anticipated net credit losses
Adverse change of 10%	NM			(2		)	(7		)
Adverse change of 20%	NM			(3		)	(14		)
-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
Mortgage Securitizations—Citi Holdings
The following table summarizes selected cash flow information related to Citi Holdings mortgage securitizations for the years ended December 31, 2014, 2013 and 2012:
	2014						2013			2012
In billions of dollars	U.S. agency-			Non-agency-			U.S. agency-			U.S. agency-
	sponsored			sponsored			sponsored			sponsored
	mortgages			mortgages			mortgages			mortgages
Proceeds from new securitizations	$	0.4		$	—		$	0.2		$	0.4
Contractual servicing fees received	0.1			—			0.3			0.4
Gains recognized on the securitization of U.S. agency-sponsored mortgages during 2014 were $54 million. Agency securitization gains for the years ended December 31, 2013 and 2012 were $20 million and $45 million, respectively.
The Company did not securitize non-agency-sponsored mortgages for the years ended December 31, 2014, 2013 and 2012.
Similar to Citicorp mortgage securitizations discussed above, the range in the key assumptions is due to the different characteristics of the interests retained by the Company. The interests retained range from highly rated and/or senior in the capital structure to unrated and/or residual interests.
At December 31, 2014 and 2013, the key assumptions used to value retained interests, and the sensitivity of the fair value to adverse changes of 10% and 20% in each of the key assumptions, are set forth in the tables below. The negative effect of each change is calculated independently, holding all other assumptions constant. Because the key assumptions may not in fact be independent, the net effect of simultaneous adverse changes in the key assumptions may be less than the sum of the individual effects shown below.
	December 31, 2014
			Non-agency-sponsored mortgages (1)
	U.S. agency-		Senior		Subordinated
	sponsored mortgages		interests		interests (2)
Discount rate	1.9% to 19.2%		5.1% to 47.1%		—
Weighted average discount rate	13.7	%	36.3	%	—
Constant prepayment rate	20.4% to 32.3%		6.7% to 20.0%		—
Weighted average constant prepayment rate	23.9	%	16.6	%	—
Anticipated net credit losses	NM		0.3% to 73.7%		—
Weighted average anticipated net credit losses	NM		19.2	%	—
Weighted average life	3.3 to 4.6 years		3.9 to 6.4 years		—
	December 31, 2013
			Non-agency-sponsored mortgages (1)
	U.S. agency-		Senior		Subordinated
	sponsored mortgages		interests		interests (2)
Discount rate	0.0% to 49.3%		9.9	%	—
Weighted average discount rate	9.5	%	9.9	%	—
Constant prepayment rate	9.6% to 26.2%		12.3% to 27.3%		—
Weighted average constant prepayment rate	20	%	15.6	%	—
Anticipated net credit losses	NM		0.3	%	—
Weighted average anticipated net credit losses	NM		0.3	%	—
Weighted average life	2.3 to 7.6 years		5.2 years		—
-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
-2	Citi Holdings held no subordinated interests in mortgage securitizations as of December 31, 2014 and 2013.
NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
				Non-agency-sponsored mortgages (1)
In millions of dollars at December 31, 2014	U.S. agency-			Senior			Subordinated
	sponsored mortgages			interests			interests
Carrying value of retained interests	$	150		$	25		$	—
Discount rates
Adverse change of 10%	$	(5	)	$	(2	)	$	—
Adverse change of 20%	(10		)	(4		)	—
Constant prepayment rate
Adverse change of 10%	(7		)	(2		)	—
Adverse change of 20%	(14		)	(3		)	—
Anticipated net credit losses
Adverse change of 10%	NM			(4		)	—
Adverse change of 20%	NM			(7		)	—
				Non-agency-sponsored mortgages (1)
In millions of dollars at December 31, 2013	U.S. agency-			Senior			Subordinated
	sponsored mortgages			interests			interests
Carrying value of retained interests	$	585		$	50		$	—
Discount rates
Adverse change of 10%	$	(16	)	$	(3	)	$	—
Adverse change of 20%	(32		)	(5		)	—
Constant prepayment rate							—
Adverse change of 10%	(33		)	(3		)	—
Adverse change of 20%	(65		)	(6		)	—
Anticipated net credit losses
Adverse change of 10%	NM			(5		)	—
Adverse change of 20%	NM			(11		)	—
-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
Mortgage Servicing Rights
In connection with the securitization of mortgage loans, the Company’s U.S. consumer mortgage business generally retains the servicing rights, which entitle the Company to a future stream of cash flows based on the outstanding principal balances of the loans and the contractual servicing fee. Failure to service the loans in accordance with contractual requirements may lead to a termination of the servicing rights and the loss of future servicing fees.
These transactions create an intangible asset referred to as mortgage servicing rights (MSRs), which are recorded at fair value on Citi’s Consolidated Balance Sheet. The fair value of Citi’s capitalized MSRs was $1.8 billion and $2.7 billion at December 31, 2014 and 2013, respectively. Of these amounts, approximately $1.7 billion and $2.1 billion, respectively, were specific to Citicorp, with the remainder to Citi Holdings. The MSRs correspond to principal loan balances of $224 billion and $286 billion as of December 31, 2014 and 2013, respectively. The following table summarizes the changes in capitalized MSRs for the years ended December 31, 2014 and 2013:
In millions of dollars	2014			2013
Balance, beginning of year	$	2,718		$	1,942
Originations	217			634
Changes in fair value of MSRs due to changes in inputs and assumptions	(344		)	640
Other changes (1)	(429		)	(496		)
Sale of MSRs	(317		)	(2		)
Balance, as of December 31	$	1,845		$	2,718
-1	Represents changes due to customer payments and passage of time.
The fair value of the MSRs is primarily affected by changes in prepayments of mortgages that result from shifts in mortgage interest rates. Specifically, higher interest rates tend to lead to declining prepayments, which causes the fair value of the MSRs to increase. In managing this risk, the Company economically hedges a significant portion of the value of its MSRs through the use of interest rate derivative contracts, forward purchase and sale commitments of mortgage-backed securities and purchased securities classified as Trading account assets.
The Company receives fees during the course of servicing previously securitized mortgages. The amounts of these fees for the years ended December 31, 2014, 2013 and 2012 were as follows:
In millions of dollars	2014			2013			2012
Servicing fees	$	638		$	800		$	990
Late fees	25			42			65
Ancillary fees	56			100			122
Total MSR fees	$	719		$	942		$	1,177
These fees are classified in the Consolidated Statement of Income as Other revenue.
Re-securitizations
The Company engages in re-securitization transactions in which debt securities are transferred to a VIE in exchange for new beneficial interests. During the years ended December 31, 2014 and 2013, Citi transferred non-agency (private-label) securities with an original par value of approximately $1.2 billion and $955 million, respectively, to re-securitization entities. These securities are backed by either residential or commercial mortgages and are often structured on behalf of clients.
As of December 31, 2014, the fair value of Citi-retained interests in private-label re-securitization transactions structured by Citi totaled approximately $545 million (including $194 million related to re-securitization transactions executed in 2014), which has been recorded in Trading account assets. Of this amount, approximately $133 million was related to senior beneficial interests and approximately $412 million was related to subordinated beneficial interests. As of December 31, 2013, the fair value of Citi-retained interests in private-label re-securitization transactions structured by Citi totaled approximately $425 million (including $131 million related to re-securitization transactions executed in 2013). Of this amount, approximately $58 million was related to senior beneficial interests, and approximately $367 million was related to subordinated beneficial interests. The original par value of private-label re-securitization transactions in which Citi holds a retained interest as of December 31, 2014 and 2013 was approximately $5.1 billion and $6.1 billion, respectively.
The Company also re-securitizes U.S. government-agency guaranteed mortgage-backed (agency) securities. During the years ended December 31, 2014 and 2013, Citi transferred agency securities with a fair value of approximately $22.5 billion and $26.3 billion, respectively, to re-securitization entities.
As of December 31, 2014, the fair value of Citi-retained interests in agency re-securitization transactions structured by Citi totaled approximately $1.8 billion (including $1.5 billion related to re-securitization transactions executed in 2014) compared to $1.5 billion as of December 31, 2013 (including $1.2 billion related to re-securitization transactions executed in 2013), which is recorded in Trading account assets. The original fair value of agency re-securitization transactions in which Citi holds a retained interest as of December 31, 2014 and 2013 was approximately $73.0 billion and $75.5 billion, respectively.
As of December 31, 2014 and 2013, the Company did not consolidate any private-label or agency re-securitization entities.
Citi-Administered Asset-Backed Commercial Paper Conduits
The Company is active in the asset-backed commercial paper conduit business as administrator of several multi-seller commercial paper conduits and also as a service provider to single-seller and other commercial paper conduits sponsored by third parties.
Citi’s multi-seller commercial paper conduits are designed to provide the Company’s clients access to low-cost funding in the commercial paper markets. The conduits purchase assets from or provide financing facilities to clients and are funded by issuing commercial paper to third-party investors. The conduits generally do not purchase assets originated by the Company. The funding of the conduits is facilitated by the liquidity support and credit enhancements provided by the Company.
As administrator to Citi’s conduits, the Company is generally responsible for selecting and structuring assets purchased or financed by the conduits, making decisions regarding the funding of the conduits, including determining the tenor and other features of the commercial paper issued, monitoring the quality and performance of the conduits’ assets, and facilitating the operations and cash flows of the conduits. In return, the Company earns structuring fees from customers for individual transactions and earns an administration fee from the conduit, which is equal to the income from the client program and liquidity fees of the conduit after payment of conduit expenses. This administration fee is fairly stable, since most risks and rewards of the underlying assets are passed back to the clients. Once the asset pricing is negotiated, most ongoing income, costs and fees are relatively stable as a percentage of the conduit’s size.
The conduits administered by the Company do not generally invest in liquid securities that are formally rated by third parties. The assets are privately negotiated and structured transactions that are generally designed to be held by the conduit, rather than actively traded and sold. The yield earned by the conduit on each asset is generally tied to the rate on the commercial paper issued by the conduit, thus passing interest rate risk to the client. Each asset purchased by the conduit is structured with transaction-specific credit enhancement features provided by the third-party client seller, including over collateralization, cash and excess spread collateral accounts, direct recourse or third-party guarantees. These credit enhancements are sized with the objective of approximating a credit rating of A or above, based on the Company’s internal risk ratings. At December 31, 2014 and 2013, the conduits had approximately $29.2 billion and $31.8 billion of purchased assets outstanding, respectively, and had incremental funding commitments with clients of approximately $15.3 billion and $13.5 billion, respectively.
Substantially all of the funding of the conduits is in the form of short-term commercial paper. At the respective periods ended December 31, 2014 and 2013, the weighted average remaining lives of the commercial paper issued by the conduits were approximately 57 and 67 days, respectively.
The primary credit enhancement provided to the conduit investors is in the form of transaction-specific credit enhancements described above. One conduit holds only loans that are fully guaranteed primarily by AAA-rated government agencies that support export and development financing programs. In addition to the transaction-specific credit enhancements, the conduits, other than the government guaranteed loan conduit, have obtained a letter of credit from the Company, which is equal to at least 8% to 10% of the conduit’s assets with a minimum of $200 million. The letters of credit provided by the Company to the conduits total approximately $2.3 billion as of December 31, 2014 and 2013. The net result across multi-seller conduits administered by the Company, other than the government guaranteed loan conduit, is that, in the event defaulted assets exceed the transaction-specific credit enhancements described above, any losses in each conduit are allocated first to the Company and then the commercial paper investors.
The Company also provides the conduits with two forms of liquidity agreements that are used to provide funding to the conduits in the event of a market disruption, among other events. Each asset of the conduits is supported by a transaction-specific liquidity facility in the form of an asset purchase agreement (APA). Under the APA, the Company has generally agreed to purchase non-defaulted eligible receivables from the conduit at par. The APA is not generally designed to provide credit support to the conduit, as it generally does not permit the purchase of defaulted or impaired assets. Any funding under the APA will likely subject the underlying conduit clients to increased interest costs. In addition, the Company provides the conduits with program-wide liquidity in the form of short-term lending commitments. Under these commitments, the Company has agreed to lend to the conduits in the event of a short-term disruption in the commercial paper market, subject to specified conditions. The Company receives fees for providing both types of liquidity agreements and considers these fees to be on fair market terms.
Finally, the Company is one of several named dealers in the commercial paper issued by the conduits and earns a market-based fee for providing such services. Along with third-party dealers, the Company makes a market in the commercial paper and may from time to time fund commercial paper pending sale to a third party. On specific dates with less liquidity in the market, the Company may hold in inventory commercial paper issued by conduits administered by the Company, as well as conduits administered by third parties. Separately, in the normal course of business, the Company invests in commercial paper, including commercial paper issued by the Company's conduits. At December 31, 2014 and 2013, the Company owned $10.6 billion and $13.9 billion, respectively, of the commercial paper issued by its administered conduits. The Company's investments were not driven by market illiquidity and the Company is not obligated under any agreement to purchase the commercial paper issued by the conduits.
The asset-backed commercial paper conduits are consolidated by the Company. The Company determined that, through its roles as administrator and liquidity provider, it had the power to direct the activities that most significantly impacted the entities’ economic performance. These powers included its ability to structure and approve the assets purchased by the conduits, its ongoing surveillance and credit mitigation activities, its ability to sell or repurchase assets out of the conduits, and its liability management. In addition, as a result of all the Company’s involvement described above, it was concluded that the Company had an economic interest that could potentially be significant. However, the assets and
liabilities of the conduits are separate and apart from those of Citigroup. No assets of any conduit are available to satisfy the creditors of Citigroup or any of its other subsidiaries.
During the second quarter of 2013, Citi consolidated the government guaranteed loan conduit it administers that was previously not consolidated due to changes in the primary risks and design of the conduit that were identified as a reconsideration event. Citi, as the administrator and liquidity provider, previously determined it had an economic interest that could potentially be significant. Upon the reconsideration event, it was determined that Citi had the power to direct the activities that most significantly impacted the conduit’s economic performance. The impact of the consolidation resulted in an increase of assets and liabilities of approximately $7 billion each and a net pretax gain to the Consolidated Statement of Income of approximately $40 million.
Collateralized Debt and Loan Obligations
A securitized collateralized debt obligation (CDO) is a VIE that purchases a pool of assets consisting of asset-backed securities and synthetic exposures through derivatives on asset-backed securities and issues multiple tranches of equity and notes to investors.
A cash CDO, or arbitrage CDO, is a CDO designed to take advantage of the difference between the yield on a portfolio of selected assets, typically residential mortgage-backed securities, and the cost of funding the CDO through the sale of notes to investors. “Cash flow” CDOs are entities in which the CDO passes on cash flows from a pool of assets, while “market value” CDOs pay to investors the market value of the pool of assets owned by the CDO at maturity. In these transactions, all of the equity and notes issued by the CDO are funded, as the cash is needed to purchase the debt securities.
A synthetic CDO is similar to a cash CDO, except that the CDO obtains exposure to all or a portion of the referenced assets synthetically through derivative instruments, such as credit default swaps. Because the CDO does not need to raise cash sufficient to purchase the entire referenced portfolio, a substantial portion of the senior tranches of risk is typically passed on to CDO investors in the form of unfunded liabilities or derivative instruments. The CDO writes credit protection on select referenced debt securities to the Company or third parties. Risk is then passed on to the CDO investors in the form of funded notes or purchased credit protection through derivative instruments. Any cash raised from investors is invested in a portfolio of collateral securities or investment contracts. The collateral is then used to support the obligations of the CDO on the credit default swaps written to counterparties.
A securitized collateralized loan obligation (CLO) is substantially similar to the CDO transactions described above, except that the assets owned by the VIE (either cash instruments or synthetic exposures through derivative instruments) are corporate loans and to a lesser extent corporate bonds, rather than asset-backed debt securities.
A third-party asset manager is typically retained by the CDO/CLO to select the pool of assets and manage those assets over the term of the VIE.
The Company earns fees for warehousing assets prior to the creation of a “cash flow” or “market value” CDO/CLO, structuring CDOs/CLOs and placing debt securities with investors. In addition, the Company has retained interests in many of the CDOs/CLOs it has structured and makes a market in the issued notes.
The Company’s continuing involvement in synthetic
CDOs/CLOs generally includes purchasing credit protection through credit default swaps with the CDO/CLO, owning a portion of the capital structure of the CDO/CLO in the form of both unfunded derivative positions (primarily “super-senior” exposures discussed below) and funded notes, entering into interest-rate swap and total-return swap transactions with the CDO/CLO, lending to the CDO/CLO, and making a market in the funded notes.
Where a CDO/CLO entity issues preferred shares (or subordinated notes that are the equivalent form), the preferred shares generally represent an insufficient amount of equity (less than 10%) and create the presumption that preferred shares are insufficient to finance the entity’s activities without subordinated financial support. In addition, although the preferred shareholders generally have full exposure to expected losses on the collateral and uncapped potential to receive expected residual returns, they generally do not have the ability to make decisions significantly affecting the entity’s financial results because of their limited role in making day-to-day decisions and their limited ability to remove the asset manager. Because one or both of the above conditions will generally be met, the Company has concluded, even where a CDO/CLO entity issued preferred shares, the entity should be classified as a VIE.
In general, the asset manager, through its ability to purchase and sell assets or—where the reinvestment period of a CDO/CLO has expired—the ability to sell assets, will have the power to direct the activities of the entity that most significantly impact the economic performance of the CDO/CLO. However, where a CDO/CLO has experienced an event of default or an optional redemption period has gone into effect, the activities of the asset manager may be curtailed and/or certain additional rights will generally be provided to the investors in a CDO/CLO entity, including the right to direct the liquidation of the CDO/CLO entity.
The Company has retained significant portions of the “super-senior” positions issued by certain CDOs. These positions are referred to as “super-senior” because they represent the most senior positions in the CDO and, at the time of structuring, were senior to tranches rated AAA by independent rating agencies.
The Company does not generally have the power to direct the activities of the entity that most significantly impact the economic performance of the CDOs/CLOs, as this power is generally held by a third-party asset manager of the CDO/CLO. As such, those CDOs/CLOs are not consolidated. The Company may consolidate the CDO/CLO when: (i) the Company is the asset manager and no other single investor has the unilateral ability to remove the Company or unilaterally cause the liquidation of the CDO/CLO, or the Company is not the asset manager but has a unilateral right to remove the third-party asset manager or unilaterally liquidate the CDO/CLO and receive the underlying assets, and (ii) the Company
has economic exposure to the entity that could be potentially significant to the entity.
The Company continues to monitor its involvement in unconsolidated CDOs/CLOs to assess future consolidation risk. For example, if the Company were to acquire additional interests in these entities and obtain the right, due to an event of default trigger being met, to unilaterally liquidate or direct the activities of a CDO/CLO, the Company may be required to consolidate the asset entity. For cash CDOs/CLOs, the net result of such consolidation would be to gross up the Company’s balance sheet by the current fair value of the securities held by third parties and assets held by the CDO/CLO, which amounts are not considered material. For synthetic CDOs/CLOs, the net result of such consolidation may reduce the Company’s balance sheet, because intercompany derivative receivables and payables would be eliminated in consolidation, and other assets held by the CDO/CLO and the securities held by third parties would be recognized at their current fair values.
Key Assumptions and Retained Interests—Citicorp
At December 31, 2014 and 2013, the key assumptions used to value retained interests in CLOs, and the sensitivity of the fair value to adverse changes of 10% and 20% are set forth in the tables below:
	31-Dec-14	31-Dec-13
Discount rate	1.4% to 1.6%	1.5% to 1.6%
December 31, 2014
In millions of dollars	CLO
Carrying value of retained interests	$	1,539
Value of underlying portfolio
Adverse change of 10%	$	(9	)
Adverse change of 20%	(18		)
December 31, 2013
In millions of dollars	CLO
Carrying value of retained interests	$	1,333
Value of underlying portfolio
Adverse change of 10%	$	(7	)
Adverse change of 20%	(14		)
Key Assumptions and Retained Interests—Citi Holdings
At December 31, 2014 and 2013, the key assumptions used to value retained interests, and the sensitivity of the fair value to adverse changes of 10% and 20% are set forth in the tables below:
	December 31, 2014
	CDOs	CLOs
Discount rate	44.7% to 49.2%	4.5% to 5.0%
	December 31, 2013
	CDOs	CLOs
Discount rate	44.3% to 48.7%	4.5% to 5.0%
	December 31, 2014
In millions of dollars	CDOs			CLOs
Carrying value of retained interests	$	6		$	10
Discount rates
Adverse change of 10%	$	(1	)	$	—
Adverse change of 20%	(2		)	—
	December 31, 2013
In millions of dollars	CDOs			CLOs
Carrying value of retained interests	$	19		$	31
Discount rates
Adverse change of 10%	$	(1	)	$	—
Adverse change of 20%	(2		)	—
Asset-Based Financing
The Company provides loans and other forms of financing to VIEs that hold assets. Those loans are subject to the same credit approvals as all other loans originated or purchased by the Company. Financings in the form of debt securities or derivatives are, in most circumstances, reported in Trading account assets and accounted for at fair value through earnings. The Company generally does not have the power to direct the activities that most significantly impact these VIEs’ economic performance, and thus it does not consolidate them.
Asset-Based Financing—Citicorp
The primary types of Citicorp’s asset-based financings, total assets of the unconsolidated VIEs with significant involvement, and the Company’s maximum exposure to loss at December 31, 2014 and 2013 are shown below. For the Company to realize the maximum loss, the VIE (borrower) would have to default with no recovery from the assets held by the VIE.
	December 31, 2014
In millions of dollars	Total			Maximum
	unconsolidated			exposure to
	VIE assets			unconsolidated VIEs
Type
Commercial and other real estate	$	25,978		$	9,426
Corporate loans	460			473
Airplanes, ships and other assets	34,990			15,573
Total	$	61,428		$	25,472
	December 31, 2013
In millions of dollars	Total			Maximum
	unconsolidated			exposure to
	VIE assets			unconsolidated VIEs
Type
Commercial and other real estate	$	14,042		$	3,902
Corporate loans	2,221			1,754
Airplanes, ships and other assets	28,650			12,958
Total	$	44,913		$	18,614
The following table summarizes selected cash flow information related to asset-based financings for the years ended December 31, 2014, 2013 and 2012:
In billions of dollars	2014			2013			2012
Proceeds from new securitizations	$	0.5		$	0.5		$	—
Cash flows received on retained interest and other net cash flows	$	0.2		$	0.7		$	0.3
The key assumption used to value retained interests and the sensitivity of the fair value to adverse changes of 10% and 20% is set forth in the tables below for the following periods presented:
	Dec. 31, 2014	Dec. 31, 2013
Discount rate	N/A	3.00%
December 31, 2013
In millions of dollars	Asset-based
	financing
Carrying value of retained interests (1)	$	1,316
Value of underlying portfolio
Adverse change of 10%	$	(11	)
Adverse change of 20%	(23		)
-1	Citicorp held no retained interests in asset-based financings as of December 31, 2014.
Asset-Based Financing—Citi Holdings
The primary types of Citi Holdings’ asset-based financing, total assets of the unconsolidated VIEs with significant involvement and the Company’s maximum exposure to loss at December 31, 2014 and 2013 are shown below. For the Company to realize the maximum loss, the VIE (borrower) would have to default with no recovery from the assets held by the VIE.
	December 31, 2014
In millions of dollars	Total			Maximum
	unconsolidated			exposure to
	VIE assets			unconsolidated VIEs
Type
Commercial and other real estate	$	168		$	50
Corporate loans	—			—
Airplanes, ships and other assets	1,153			76
Total	$	1,321		$	126
	December 31, 2013
In millions of dollars	Total			Maximum
	unconsolidated			exposure to
	VIE assets			unconsolidated VIEs
Type
Commercial and other real estate	$	774		$	298
Corporate loans	112			96
Airplanes, ships and other assets	2,619			496
Total	$	3,505		$	890
The following table summarizes selected cash flow information related to asset-based financings for the years ended December 31, 2014, 2013 and 2012:
In billions of dollars	2014			2013			2012
Cash flows received on retained interest and other net cash flows	$	0.1		$	0.2		$	1.7
At December 31, 2014 and 2013, the effects of adverse changes of 10% and 20% in the discount rate used to determine the fair value of retained interests are set forth in the tables below:
December 31, 2013
In millions of dollars	Asset-based
	financing
Carrying value of retained interests (1)	$	95
Value of underlying portfolio
Adverse change of 10%	$	—
Adverse change of 20%	—
-1	Citi Holdings held no retained interests in asset-based financings as of December 31, 2014.
Municipal Securities Tender Option Bond (TOB) Trusts
TOB trusts hold fixed- and floating-rate, taxable and tax-exempt securities issued by state and local governments and municipalities. The trusts are typically single-issuer trusts whose assets are purchased from the Company or from other investors in the municipal securities market. The TOB trusts fund the purchase of their assets by issuing long-term, putable floating rate certificates (Floaters) and residual certificates (Residuals). The trusts are referred to as TOB trusts because the Floater holders have the ability to tender their interests periodically back to the issuing trust, as described further below. The Floaters and Residuals evidence beneficial ownership interests in, and are collateralized by, the underlying assets of the trust. The Floaters are held by third-party investors, typically tax-exempt money market funds. The Residuals are typically held by the original owner of the municipal securities being financed.
The Floaters and the Residuals have a tenor that is equal to or shorter than the tenor of the underlying municipal bonds. The Residuals entitle their holders to the residual cash flows from the issuing trust, the interest income generated by the underlying municipal securities net of interest paid on the Floaters and trust expenses. The Residuals are rated based on the long-term rating of the underlying municipal bond. The Floaters bear variable interest rates that are reset periodically to a new market rate based on a spread to a high grade, short-term, tax-exempt index. The Floaters have a long-term rating based on the long-term rating of the underlying municipal bond and a short-term rating based on that of the liquidity provider to the trust.
There are two kinds of TOB trusts: customer TOB trusts and non-customer TOB trusts. Customer TOB trusts are trusts through which customers finance their investments in municipal securities. The Residuals are held by customers and the Floaters by third-party investors, typically tax-exempt money market funds. Non-customer TOB trusts are trusts through which the Company finances its own investments in municipal securities. In such trusts, the Company holds the Residuals, and third-party investors, typically tax-exempt money market funds, hold the Floaters.
The Company serves as remarketing agent to the trusts, placing the Floaters with third-party investors at inception, facilitating the periodic reset of the variable rate of interest on the Floaters, and remarketing any tendered Floaters. If Floaters are tendered and the Company (in its role as remarketing agent) is unable to find a new investor within a specified period of time, it can declare a failed remarketing, in which case the trust is unwound. The Company may, but is not obligated to, buy the Floaters into its own inventory. The level of the Company’s inventory of Floaters fluctuates over time. At December 31, 2014 and 2013, the Company held $3 million and $176 million, respectively, of Floaters related to both customer and non-customer TOB trusts.
For certain non-customer trusts, the Company also provides credit enhancement. At December 31, 2014 and 2013 approximately $198 million and $230 million, respectively, of the municipal bonds owned by TOB trusts have a credit guarantee provided by the Company.
The Company provides liquidity to many of the outstanding trusts. If a trust is unwound early due to an event other than a credit event on the underlying municipal bond, the underlying municipal bonds are sold in the market. If there is a shortfall in the trust’s cash flows between the redemption price of the tendered Floaters and the proceeds from the sale of the underlying municipal bonds, the trust draws on a liquidity agreement in an amount equal to the shortfall. For customer TOBs where the Residual is less than 25% of the trust’s capital structure, the Company has a reimbursement agreement with the Residual holder under which the Residual holder reimburses the Company for any payment made under the liquidity arrangement. Through this reimbursement agreement, the Residual holder remains economically exposed to fluctuations in value of the underlying municipal bonds. These reimbursement agreements are generally subject to daily margining based on changes in value of the underlying municipal bond. In cases where a third party provides liquidity to a non-customer TOB trust, a similar reimbursement arrangement is made whereby the Company (or a consolidated subsidiary of the Company) as Residual holder absorbs any losses incurred by the liquidity provider.
At December 31, 2014 and 2013, liquidity agreements provided with respect to customer TOB trusts totaled $3.7 billion and $3.9 billion, respectively, of which $2.6 billion and $2.8 billion, respectively, were offset by reimbursement agreements. For the remaining exposure related to TOB transactions, where the Residual owned by the customer was at least 25% of the bond value at the inception of the transaction, no reimbursement agreement was executed. The Company also provides other liquidity agreements or letters of credit to customer-sponsored municipal investment funds, which are not variable interest entities, and municipality-related issuers that totaled $7.4 billion and $5.4 billion as of December 31, 2014 and 2013, respectively. These liquidity agreements and letters of credit are offset by reimbursement agreements with various term-out provisions.
The Company considers the customer and non-customer TOB trusts to be VIEs. Customer TOB trusts are not consolidated by the Company. The Company has concluded that the power to direct the activities that most significantly impact the economic performance of the customer TOB trusts is primarily held by the customer Residual holder, which may unilaterally cause the sale of the trust’s bonds.
Non-customer TOB trusts generally are consolidated. Similar to customer TOB trusts, the Company has concluded that the power over the non-customer TOB trusts is primarily held by the Residual holder, which may unilaterally cause the sale of the trust’s bonds. Because the Company holds the Residual interest, and thus has the power to direct the activities that most significantly impact the trust’s economic performance, it consolidates the non-customer TOB trusts.
Municipal Investments
Municipal investment transactions include debt and equity interests in partnerships that finance the construction and rehabilitation of low-income housing, facilitate lending in new or underserved markets, or finance the construction or operation of renewable municipal energy facilities. The Company generally invests in these partnerships as a limited partner and earns a return primarily through the receipt of tax credits and grants earned from the investments made by the partnership. The Company may also provide construction loans or permanent loans for the development or operation of real estate properties held by partnerships. These entities are generally considered VIEs. The power to direct the activities of these entities is typically held by the general partner. Accordingly, these entities are not consolidated by the Company.
Client Intermediation
Client intermediation transactions represent a range of transactions designed to provide investors with specified returns based on the returns of an underlying security, referenced asset or index. These transactions include credit-linked notes and equity-linked notes. In these transactions, the VIE typically obtains exposure to the underlying security, referenced asset or index through a derivative instrument, such as a total-return swap or a credit-default swap. In turn the VIE issues notes to investors that pay a return based on the specified underlying security, referenced asset or index. The VIE invests the proceeds in a financial asset or a guaranteed insurance contract that serves as collateral for the derivative contract over the term of the transaction. The Company’s involvement in these transactions includes being the counterparty to the VIE’s derivative instruments and investing in a portion of the notes issued by the VIE. In certain transactions, the investor’s maximum risk of loss is limited, and the Company absorbs risk of loss above a specified level. The Company does not have the power to direct the activities of the VIEs that most significantly impact their economic performance, and thus it does not consolidate them.
The Company’s maximum risk of loss in these transactions is defined as the amount invested in notes issued by the VIE and the notional amount of any risk of loss absorbed by the Company through a separate instrument issued by the VIE. The derivative instrument held by the Company may generate a receivable from the VIE (for example, where the Company purchases credit protection from the VIE in connection with the VIE’s issuance of a credit-linked note), which is collateralized by the assets owned by the VIE. These derivative instruments are not considered variable interests, and any associated receivables are not included in the calculation of maximum exposure to the VIE.
The proceeds from new securitizations related to the Company’s client intermediation transactions for the year ended December 31, 2014 totaled approximately $2.0 billion.
Investment Funds
The Company is the investment manager for certain investment funds and retirement funds that invest in various asset classes including private equity, hedge funds, real estate, fixed income and infrastructure. The Company earns a management fee, which is a percentage of capital under management, and may earn performance fees. In addition, for some of these funds the Company has an ownership interest in the investment funds. The Company has also established a number of investment funds as opportunities for qualified employees to invest in private equity investments. The Company acts as investment manager to these funds and may provide employees with financing on both recourse and non-recourse bases for a portion of the employees’ investment commitments.
The Company has determined that a majority of the investment entities managed by Citigroup are provided a deferral from the requirements of ASC 810, because they meet the criteria in Accounting Standards Update No. 2010-10, Consolidation (Topic 810), Amendments for Certain Investment Funds (ASU 2010-10). These entities continue to be evaluated under the requirements of ASC 810-10, prior to the implementation of SFAS 167 (FIN 46(R), Consolidation of Variable Interest Entities), which required that a VIE be consolidated by the party with a variable interest that will absorb a majority of the entity’s expected losses or residual returns, or both. See Note 1 to the Consolidated Financial Statements for a discussion of ASU 2015-02 which includes impending changes to targeted areas of consolidation guidance. When ASU 2015-02 becomes effective on January 1, 2016, it will eliminate the above noted deferral for certain investment entities pursuant to ASU 2010-10.
Trust Preferred Securities
The Company has previously raised financing through the issuance of trust preferred securities. In these transactions, the Company forms a statutory business trust and owns all of the voting equity shares of the trust. The trust issues preferred equity securities to third-party investors and invests the gross proceeds in junior subordinated deferrable interest debentures issued by the Company. The trusts have no assets, operations, revenues or cash flows other than those related to the issuance, administration and repayment of the preferred equity securities held by third-party investors. Obligations of the trusts are fully and unconditionally guaranteed by the Company.
Because the sole asset of each of the trusts is a receivable from the Company and the proceeds to the Company from the receivable exceed the Company’s investment in the VIE’s equity shares, the Company is not permitted to consolidate the trusts, even though it owns all of the voting equity shares of the trust, has fully guaranteed the trusts’ obligations, and has the right to redeem the preferred securities in certain circumstances. The Company recognizes the subordinated debentures on its Consolidated Balance Sheet as long-term liabilities. (For additional information, see Note 18 to the Consolidated Financial Statements.)

DERIVATIVES_ACTIVITIES

DERIVATIVES ACTIVITIES	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES ACTIVITIES	DERIVATIVES ACTIVITIES
	In the ordinary course of business, Citigroup enters into various types of derivative transactions. These derivative
	transactions include:
	•	Futures and forward contracts, which are commitments to buy or sell at a future date a financial instrument, commodity or currency at a contracted price and may be settled in cash or through delivery.
	•	Swap contracts, which are commitments to settle in cash at a future date or dates that may range from a few days to a number of years, based on differentials between specified indices or financial instruments, as applied to a notional principal amount.
	•	Option contracts, which give the purchaser, for a premium, the right, but not the obligation, to buy or sell within a specified time a financial instrument, commodity or currency at a contracted price that may also be settled in cash, based on differentials between specified indices or prices.
	Swaps and forwards and some option contracts are over-the-counter (OTC) derivatives that are bilaterally negotiated with counterparties and settled with those counterparties, except for swap contracts that are novated and "cleared" through central counterparties (CCPs). Futures contracts and other option contracts are standardized contracts that are traded on an exchange with a CCP as the counterparty from the inception of the transaction. Citigroup enters into these derivative contracts relating to interest rate, foreign currency, commodity and other market/credit risks for the following reasons:
	•	Trading Purposes: Citigroup trades derivatives as an active market maker. Citigroup offers its customers derivatives in connection with their risk management actions to transfer, modify or reduce their interest rate, foreign exchange and other market/credit risks or for their own trading purposes. Citigroup also manages its derivative risk positions through offsetting trade activities, controls focused on price verification, and daily reporting of positions to senior managers.
	•	Hedging: Citigroup uses derivatives in connection with its risk-management activities to hedge certain risks or reposition the risk profile of the Company. For example, Citigroup issues fixed-rate long-term debt and then enters into a receive-fixed, pay-variable-rate interest rate swap with the same tenor and notional amount to convert the interest payments to a net variable-rate basis. This strategy is the most common form of an interest rate hedge, as it minimizes interest cost in certain yield curve environments. Derivatives are also used to manage risks inherent in specific groups of on-balance-sheet assets and liabilities, including AFS securities and borrowings, as well as other interest-sensitive assets and liabilities. In addition, foreign-exchange contracts are used to hedge non-U.S.-dollar-denominated debt, foreign-currency-denominated AFS securities and net investment exposures.
	Derivatives may expose Citigroup to market, credit or liquidity risks in excess of the amounts recorded on the Consolidated Balance Sheet. Market risk on a derivative product is the exposure created by potential fluctuations in interest rates, foreign-exchange rates and other factors and is a function of the type of product, the volume of transactions, the tenor and terms of the agreement and the underlying volatility. Credit risk is the exposure to loss in the event of nonperformance by the other party to the transaction where the value of any collateral held is not adequate to cover such losses. The recognition in earnings of unrealized gains on these transactions is subject to management’s assessment of the probability of counterparty default. Liquidity risk is the potential exposure that arises when the size of a derivative position may not be able to be monetized in a reasonable period of time and at a reasonable cost in periods of high volatility and financial stress.
	Derivative transactions are customarily documented under industry standard master agreements that provide that, following an uncured payment default or other event of default, the non-defaulting party may promptly terminate all transactions between the parties and determine the net amount due to be paid to, or by, the defaulting party. Events of default include: (i) failure to make a payment on a derivatives transaction that remains uncured following applicable notice and grace periods, (ii) breach of agreement that remains uncured after applicable notice and grace periods, (iii) breach of a representation, (iv) cross default, either to third-party debt or to other derivative transactions entered into between the parties, or, in some cases, their affiliates, (v) the occurrence of a merger or consolidation which results in a party’s becoming a materially weaker credit, and (vi) the cessation or repudiation of any applicable guarantee or other credit support document. Obligations under master netting agreements are often secured by collateral posted under an industry standard credit support annex to the master netting agreement. An event of default may also occur under a credit support annex if a party fails to make a collateral delivery that remains uncured following applicable notice and grace periods.
	The netting and collateral rights incorporated in the master netting agreements are considered to be legally enforceable if a supportive legal opinion has been obtained from counsel of recognized standing that provides the requisite level of certainty regarding enforceability and that the exercise of rights by the non-defaulting party to terminate and close-out transactions on a net basis under these agreements will not be stayed or avoided under applicable law upon an event of default including bankruptcy, insolvency or similar proceeding.
	A legal opinion may not be sought for certain jurisdictions where local law is silent or unclear as to the enforceability of such rights or where adverse case law or conflicting regulation may cast doubt on the enforceability of such rights. In some jurisdictions and for some counterparty types, the insolvency law may not provide the requisite level of certainty. For example, this may be the case for certain sovereigns, municipalities, central banks and U.S. pension plans.
	Exposure to credit risk on derivatives is affected by market volatility, which may impair the ability of counterparties to satisfy their obligations to the Company. Credit limits are established and closely monitored for customers engaged in derivatives transactions. Citi considers the level of legal certainty regarding enforceability of its offsetting rights under master netting agreements and credit support annexes to be an important factor in its risk management process. Specifically, Citi generally transacts much lower volumes of derivatives under master netting agreements where Citi does not have the requisite level of legal certainty regarding enforceability, because such derivatives consume greater amounts of single counterparty credit limits than those executed under enforceable master netting agreements.
	Cash collateral and security collateral in the form of G10 government debt securities is often posted by a party to a master netting agreement to secure the net open exposure of the other party; the receiving party is free to commingle/rehypothecate such collateral in the ordinary course of its business. Nonstandard collateral such as corporate bonds, municipal bonds, U.S. agency securities and/or MBS may also be pledged as collateral for derivative transactions. Security collateral posted to open and maintain a master netting agreement with a counterparty, in the form of cash and/or securities, may from time to time be segregated in an account at a third-party custodian pursuant to a tri-party account control agreement.
	Information pertaining to Citigroup’s derivative activity, based on notional amounts, as of December 31, 2014 and December 31, 2013, is presented in the table below. Derivative notional amounts are reference amounts from which contractual payments are derived and, in Citigroup’s view, do not accurately represent a measure of Citi’s exposure to derivative transactions. Rather, as discussed above, Citi’s derivative exposure arises primarily from market fluctuations (i.e., market risk), counterparty failure (i.e., credit risk) and/or periods of high volatility or financial stress (i.e., liquidity
	risk), as well as any market valuation adjustments that may be required on the transactions. Moreover, notional amounts do not reflect the netting of offsetting trades (also as discussed above). For example, if Citi enters into an interest rate swap with $100 million notional, and offsets this risk with an identical but opposite position with a different counterparty, $200 million in derivative notionals is reported, although these offsetting positions may result in de minimus overall market risk. Aggregate derivative notional amounts can fluctuate from period-to-period in the normal course of business based on Citi’s market share as well as levels of client activity.
	Derivative Notionals
		Hedging instruments under						Other derivative instruments
		ASC 815(1)(2)
								Trading derivatives						Management hedges(3)
	In millions of dollars	December 31,			December 31,			December 31,			December 31,			December 31,		December 31,
		2014			2013			2014			2013			2014		2013
	Interest rate contracts
	Swaps	$	163,348		$	132,823		$	31,906,549		$	36,370,196		$	31,945	$	93,286
	Futures and forwards	—			20			7,044,990			6,129,742			42,305		61,398
	Written options	—			—			3,311,751			3,342,832			3,913		3,103
	Purchased options	—			—			3,171,056			3,240,990			4,910		3,185
	Total interest rate contract notionals	$	163,348		$	132,843		$	45,434,346		$	49,083,760		$	83,073	$	160,972
	Foreign exchange contracts
	Swaps	$	25,157		$	22,402		$	4,567,977		$	3,298,500		$	23,990	$	20,013
	Futures and forwards	73,219			79,646			2,154,773			1,982,303			7,069		14,226
	Written options	—			101			1,343,520			1,037,433			432		—
	Purchased options	—			106			1,363,382			1,029,872			432		71
	Total foreign exchange contract notionals	$	98,376		$	102,255		$	9,429,652		$	7,348,108		$	31,923	$	34,310
	Equity contracts
	Swaps	$	—		$	—		$	131,344		$	100,019		$	—	$	—
	Futures and forwards	—			—			30,510			23,161			—		—
	Written options	—			—			305,627			333,945			—		—
	Purchased options	—			—			275,216			266,570			—		—
	Total equity contract notionals	$	—		$	—		$	742,697		$	723,695		$	—	$	—
	Commodity and other contracts
	Swaps	$	—		$	—		$	90,817		$	81,112		$	—	$	—
	Futures and forwards	1,089			—			106,021			98,265			—		—
	Written options	—			—			104,581			100,482			—		—
	Purchased options	—			—			95,567			97,626			—		—
	Total commodity and other contract notionals	$	1,089		$	—		$	396,986		$	377,485		$	—	$	—
	Credit derivatives(4)
	Protection sold	$	—		$	—		$	1,063,858		$	1,143,363		$	—	$	—
	Protection purchased	—			95			1,100,369			1,195,223			16,018		19,744
	Total credit derivatives	$	—		$	95		$	2,164,227		$	2,338,586		$	16,018	$	19,744
	Total derivative notionals	$	262,813		$	235,193		$	58,167,908		$	59,871,634		$	131,014	$	215,026
	-1	The notional amounts presented in this table do not include hedge accounting relationships under ASC 815 where Citigroup is hedging the foreign currency risk of a net investment in a foreign operation by issuing a foreign-currency-denominated debt instrument. The notional amount of such debt was $3,752 million and $6,450 million at December 31, 2014 and December 31, 2013, respectively.
	-2	Derivatives in hedge accounting relationships accounted for under ASC 815 are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities on the Consolidated Balance Sheet.
	-3	Management hedges represent derivative instruments used to mitigate certain economic risks, but for which hedge accounting is not applied. These derivatives are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities on the Consolidated Balance Sheet.
	-4	Credit derivatives are arrangements designed to allow one party (protection buyer) to transfer the credit risk of a “reference asset” to another party (protection seller). These arrangements allow a protection seller to assume the credit risk associated with the reference asset without directly purchasing that asset. The Company enters into credit derivative positions for purposes such as risk management, yield enhancement, reduction of credit concentrations and diversification of overall risk.
	The following tables present the gross and net fair values of the Company’s derivative transactions, and the related offsetting amounts permitted under ASC 210-20-45 and ASC 815-10-45, as of December 31, 2014 and December 31, 2013. Under ASC 210-20-45, gross positive fair values are offset against gross negative fair values by counterparty pursuant to enforceable master netting agreements. Under ASC 815-10-45, payables and receivables in respect of cash collateral received from or paid to a given counterparty pursuant to a credit support annex are included in the offsetting amount if a legal opinion supporting enforceability of netting and collateral rights has been obtained. GAAP does not permit similar offsetting for security collateral. The table also includes amounts that are not permitted to be offset under ASC 210-20-45 and ASC 815-10-45, such as security collateral posted or cash collateral posted at third-party custodians, but would be eligible for offsetting to the extent an event of default occurred and a legal opinion supporting enforceability of the netting and collateral rights has been obtained.
	Derivative Mark-to-Market (MTM) Receivables/Payables
	In millions of dollars at December 31, 2014	Derivatives classified						Derivatives classified
		in Trading account						in Other
		assets / liabilities(1)(2)(3)						assets / liabilities(2)(3)
	Derivatives instruments designated as ASC 815 hedges	Assets			Liabilities			Assets			Liabilities
	Over-the-counter	$	1,508		$	204		$	3,117		$	414
	Cleared	4,300			868			—			25
Interest rate contracts	$	5,808		$	1,072		$	3,117		$	439
Over-the-counter	$	3,885		$	743		$	678		$	588
Foreign exchange contracts	$	3,885		$	743		$	678		$	588
Total derivative instruments designated as ASC 815 hedges	$	9,693		$	1,815		$	3,795		$	1,027
Derivatives instruments not designated as ASC 815 hedges
Over-the-counter	$	376,778		$	359,689		$	106		$	—
Cleared	255,847			261,499			6			21
Exchange traded	20			22			141			164
Interest rate contracts	$	632,645		$	621,210		$	253		$	185
Over-the-counter	$	151,736		$	157,650		$	—		$	17
Cleared	366			387			—			—
Exchange traded	7			46			—			—
Foreign exchange contracts	$	152,109		$	158,083		$	—		$	17
Over-the-counter	$	20,425		$	28,333		$	—		$	—
Cleared	16			35			—			—
Exchange traded	4,311			4,101			—			—
Equity contracts	$	24,752		$	32,469		$	—		$	—
Over-the-counter	$	19,943		$	23,103		$	—		$	—
Exchange traded	3,577			3,083			—			—
Commodity and other contracts	$	23,520		$	26,186		$	—		$	—
Over-the-counter	$	39,412		$	39,439		$	265		$	384
Cleared	4,106			3,991			13			171
Credit derivatives(4)	$	43,518		$	43,430		$	278		$	555
Total derivatives instruments not designated as ASC 815 hedges	$	876,544		$	881,378		$	531		$	757
Total derivatives	$	886,237		$	883,193		$	4,326		$	1,784
Cash collateral paid/received(5)(6)	$	6,523		$	9,846		$	123		$	7
Less: Netting agreements(7)	(777,178		)	(777,178		)	—			—
Less: Netting cash collateral received/paid(8)	(47,625		)	(47,769		)	(1,791		)	(15		)
Net receivables/payables included on the consolidated balance sheet(9)	$	67,957		$	68,092		$	2,658		$	1,776
Additional amounts subject to an enforceable master netting agreement but not offset on the Consolidated Balance Sheet
Less: Cash collateral received/paid	$	(867	)	$	(11	)	$	—		$	—
Less: Non-cash collateral received/paid	(10,043		)	(6,264		)	(1,293		)	—
Total net receivables/payables(9)	$	57,047		$	61,817		$	1,365		$	1,776
-1	The trading derivatives fair values are presented in Note 13 to the Consolidated Financial Statements.
-2	Derivative mark-to-market receivables/payables related to management hedges are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities.
-3	Over-the-counter (OTC) derivatives are derivatives executed and settled bilaterally with counterparties without the use of an organized exchange or central clearing house. Cleared derivatives include derivatives executed bilaterally with a counterparty in the OTC market but then novated to a central clearing house, whereby the central clearing house becomes the counterparty to both of the original counterparties. Exchange traded derivatives include derivatives executed directly on an organized exchange that provides pre-trade price transparency.
-4	The credit derivatives trading assets comprise $18,430 million related to protection purchased and $25,088 million related to protection sold as of December 31, 2014. The credit derivatives trading liabilities comprise $25,972 million related to protection purchased and $17,458 million related to protection sold as of December 31, 2014.
-5	For the trading account assets/liabilities, reflects the net amount of the $54,292 million and $57,471 million of gross cash collateral paid and received, respectively. Of the gross cash collateral paid, $47,769 million was used to offset trading derivative liabilities and, of the gross cash collateral received, $47,625 million was used to offset trading derivative assets.
-6	For cash collateral paid with respect to non-trading derivative liabilities, reflects the net amount of $138 million the gross cash collateral received, of which $15 million is netted against OTC non-trading derivative positions within Other liabilities. For cash collateral received with respect to non-trading derivative liabilities, reflects the net amount of $1,798 million of the gross cash collateral received, of which $1,791 million is netted against OTC non-trading derivative positions within Other assets.
-7	Represents the netting of derivative receivable and payable balances with the same counterparty under enforceable netting agreements. Approximately $510 billion, $264 billion and $3 billion of the netting against trading account asset/liability balances is attributable to each of the OTC, cleared and exchange traded derivatives, respectively.
-8	Represents the netting of cash collateral paid and received by counterparty under enforceable credit support agreements. Substantially all cash collateral received is netted against OTC derivative assets. Cash collateral paid of approximately $46 billion and $2 billion is netted against each of the OTC and cleared derivative liabilities, respectively.
-9	The net receivables/payables include approximately $11 billion derivative asset and $10 billion of derivative liability fair values not subject to enforceable master netting agreements.
In millions of dollars at December 31, 2013	Derivatives classified in Trading						Derivatives classified in Other assets / liabilities(2)(3)
	account assets / liabilities(1)(2)(3)
Derivatives instruments designated as ASC 815 hedges	Assets			Liabilities			Assets			Liabilities
Over-the-counter	$	956		$	306		$	3,082		$	854
Cleared	2,505			585			5			—
Interest rate contracts	$	3,461		$	891		$	3,087		$	854
Over-the-counter	$	1,540		$	1,244		$	989		$	293
Foreign exchange contracts	$	1,540		$	1,244		$	989		$	293
Over-the-counter	$	—		$	—		$	—		$	2
Credit derivatives	$	—		$	—		$	—		$	2
Total derivative instruments designated as ASC 815 hedges	$	5,001		$	2,135		$	4,076		$	1,149
Derivatives instruments not designated as ASC 815 hedges
Over-the-counter	$	313,772		$	297,115		$	37		$	9
Cleared	311,114			319,190			27			5
Exchange traded	33			30			—			—
Interest rate contracts	$	624,919		$	616,335		$	64		$	14
Over-the-counter	$	89,847		$	86,147		$	79		$	3
Cleared	1,119			1,191			—			—
Exchange traded	48			55			—			—
Foreign exchange contracts	$	91,014		$	87,393		$	79		$	3
Over-the-counter	$	19,080		$	28,458		$	—		$	—
Exchange traded	5,797			5,834			—			—
Equity contracts	$	24,877		$	34,292		$	—		$	—
Over-the-counter	$	7,921		$	9,059		$	—		$	—
Exchange traded	1,161			1,111			—			—
Commodity and other contracts	$	9,082		$	10,170		$	—		$	—
Over-the-counter	$	38,496		$	38,247		$	71		$	563
Cleared	1,850			2,547			—			—
Credit derivatives(4)	$	40,346		$	40,794		$	71		$	563
Total Derivatives instruments not designated as ASC 815 hedges	$	790,238		$	788,984		$	214		$	580
Total derivatives	$	795,239		$	791,119		$	4,290		$	1,729
Cash collateral paid/received(5)(6)	$	6,073		$	8,827		$	82		$	282
Less: Netting agreements(7)	(713,598		)	(713,598		)	—			—
Less: Netting cash collateral received/paid(8)	(34,893		)	(39,094		)	(2,951		)	—
Net receivables/payables included on the Consolidated Balance Sheet(9)	$	52,821		$	47,254		$	1,421		$	2,011
Additional amounts subject to an enforceable master netting agreement but not offset on the Consolidated Balance Sheet
Less: Cash collateral received/paid	$	(365	)	$	(5	)	$	—		$	—
Less: Non-cash collateral received/paid	(7,478		)	(3,345		)	(341		)	—
Total net receivables/payables(9)	$	44,978		$	43,904		$	1,080		$	2,011
-1	The trading derivatives fair values are presented in Note 13 to the Consolidated Financial Statements.
-2	Derivative mark-to-market receivables/payables related to management hedges are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities.
-3	Over-the-counter (OTC) derivatives include derivatives executed and settled bilaterally with counterparties without the use of an organized exchange or central clearing house. Cleared derivatives include derivatives executed bilaterally with a counterparty in the OTC market but then novated to a central clearing house, whereby the central clearing house becomes the counterparty to both of the original counterparties. Exchange traded derivatives include derivatives executed directly on an organized exchange that provides pre-trade price transparency.
-4	The credit derivatives trading assets comprise $13,673 million related to protection purchased and $26,673 million related to protection sold as of December 31, 2013. The credit derivatives trading liabilities comprise $28,158 million related to protection purchased and $12,636 million related to protection sold as of December 31, 2013.
-5	For the trading account assets/liabilities, reflects the net amount of the $45,167 million and $43,720 million of gross cash collateral paid and received, respectively. Of the gross cash collateral paid, $39,094 million was used to offset derivative liabilities and, of the gross cash collateral received, $34,893 million was used to offset derivative assets.
-6	For cash collateral received with respect to non-trading derivative liabilities, reflects the net amount of $3,233 million of gross cash collateral received of which $2,951 million is netted against non-trading derivative positions within other assets.
-7	Represents the netting of derivative receivable and payable balances with the same counterparty under enforceable netting agreements. Approximately $392 billion, $317 billion and $5 billion of the netting against trading account asset/liability balances is attributable to each of the OTC, cleared and exchange-traded derivatives, respectively.
-8	Represents the netting of cash collateral paid and received by counterparty under enforceable credit support agreements. Substantially all cash collateral received is netted against OTC derivative assets. Cash collateral paid of approximately $33 billion and $6 billion is netted against OTC and cleared derivative liabilities, respectively.
-9	The net receivables/payables include approximately $16 billion of both derivative asset and liability fair values not subject to enforceable master netting agreements.
For the years ended December 31, 2014, 2013 and 2012, the amounts recognized in Principal transactions in the Consolidated Statement of Income related to derivatives not designated in a qualifying hedging relationship, as well as the underlying non-derivative instruments, are presented in Note 6 to the Consolidated Financial Statements. Citigroup presents this disclosure by business classification, showing derivative gains and losses related to its trading activities together with gains and losses related to non-derivative instruments within the same trading portfolios, as this represents the way these portfolios are risk managed.
The amounts recognized in Other revenue in the Consolidated Statement of Income for the years ended December 31, 2014, 2013 and 2012 related to derivatives not designated in a qualifying hedging relationship are shown below. The table below does not include any offsetting gains/losses on the economically hedged items to the extent such amounts are also recorded in Other revenue.
	Gains (losses) included in Other revenue
	Year ended December 31,
In millions of dollars	2014			2013			2012
Interest rate contracts	$	291		$	(376	)	$	(427	)
Foreign exchange	(2,894		)	221			182
Credit derivatives	(135		)	(595		)	(1,022		)
Total Citigroup	$	(2,738	)	$	(750	)	$	(1,267	)
Accounting for Derivative Hedging
Citigroup accounts for its hedging activities in accordance with ASC 815, Derivatives and Hedging. As a general rule, hedge accounting is permitted where the Company is exposed to a particular risk, such as interest-rate or foreign-exchange risk, that causes changes in the fair value of an asset or liability or variability in the expected future cash flows of an existing asset, liability or a forecasted transaction that may affect earnings.
Derivative contracts hedging the risks associated with changes in fair value are referred to as fair value hedges, while contracts hedging the variability of expected future cash flows are cash flow hedges. Hedges that utilize derivatives or debt instruments to manage the foreign exchange risk associated with equity investments in non-U.S.-dollar-functional-currency foreign subsidiaries (net investment in a foreign operation) are net investment hedges.
If certain hedging criteria specified in ASC 815 are met, including testing for hedge effectiveness, hedge accounting may be applied. The hedge effectiveness assessment methodologies for similar hedges are performed in a similar manner and are used consistently throughout the hedging relationships. For fair value hedges, changes in the value of the hedging derivative, as well as changes in the value of the related hedged item due to the risk being hedged are reflected in current earnings. For cash flow hedges and net investment hedges, changes in the value of the hedging derivative are reflected in Accumulated other comprehensive income (loss) in Citigroup’s stockholders’ equity to the extent the hedge is highly effective. Hedge ineffectiveness, in either case, is reflected in current earnings.
For asset/liability management hedging, fixed-rate long-term debt is recorded at amortized cost under GAAP. However, by designating an interest rate swap contract as a hedging instrument and electing to apply ASC 815 fair value hedge accounting, the carrying value of the debt is adjusted for changes in the benchmark interest rate, with such changes in value recorded in current earnings. The related interest-rate swap also is recorded on the balance sheet at fair value, with any changes in fair value also reflected in earnings. Thus, any ineffectiveness resulting from the hedging relationship is captured in current earnings.
Alternatively, for management hedges, that do not meet the ASC 815 hedging criteria, only the derivative is recorded at fair value on the balance sheet, with the associated changes in fair value recorded in earnings, while the debt continues to be carried at amortized cost. Therefore, current earnings are affected only by the interest rate shifts and other factors that cause a change in the swap’s value. This type of hedge is undertaken when hedging requirements cannot be achieved or management decides not to apply ASC 815 hedge accounting.
Another alternative is to elect to carry the debt at fair value under the fair value option. Once the irrevocable election is made upon issuance of the debt, the full changes in fair value of the debt are reported in earnings. The related interest rate swap, with changes in fair value, is also reflected in earnings, which provides a natural offset to the debt’s fair value change. To the extent the two offsets are not exactly equal because the full change in the fair value of the debt includes risks not offset by the interest rate swap, the difference is captured in current earnings.
The key requirements to achieve ASC 815 hedge accounting are documentation of a hedging strategy and specific hedge relationships at hedge inception and substantiating hedge effectiveness on an ongoing basis. A derivative must be highly effective in accomplishing the hedge objective of offsetting either changes in the fair value or cash flows of the hedged item for the risk being hedged. Any ineffectiveness in the hedge relationship is recognized in current earnings. The assessment of effectiveness may exclude changes in the value of the hedged item that are unrelated to the risks being hedged. Similarly, the assessment of effectiveness may exclude changes in the fair value of a derivative related to time value that, if excluded, are recognized in current earnings.
Fair Value Hedges
Hedging of benchmark interest rate risk
Citigroup hedges exposure to changes in the fair value of outstanding fixed-rate issued debt and certificates of deposit. These hedges are designated as fair value hedges of the benchmark interest rate risk associated with the currency of the hedged liability. The fixed cash flows of the hedged items are converted to benchmark variable-rate cash flows by entering into receive-fixed, pay-variable interest rate swaps. These fair value hedge relationships use either regression or dollar-offset ratio analysis to assess whether the hedging relationships are highly effective at inception and on an ongoing basis.
Citigroup also hedges exposure to changes in the fair value of fixed-rate assets, including available-for-sale debt securities and loans. The hedging instruments used are receive-variable, pay-fixed interest rate swaps. These fair value hedging relationships use either regression or dollar-offset ratio analysis to assess whether the hedging relationships are highly effective at inception and on an ongoing basis.
Hedging of foreign exchange risk
Citigroup hedges the change in fair value attributable to foreign-exchange rate movements in available-for-sale securities that are denominated in currencies other than the functional currency of the entity holding the securities, which may be within or outside the U.S. The hedging instrument employed is generally a forward foreign-exchange contract. In this hedge, the change in fair value of the hedged available-for-sale security attributable to the portion of foreign exchange risk hedged is reported in earnings, and not Accumulated other comprehensive income (loss)—which serves to offset the change in fair value of the forward contract that is also reflected in earnings. Citigroup considers the premium associated with forward contracts (i.e., the differential between spot and contractual forward rates) as the cost of hedging; this is excluded from the assessment of hedge effectiveness and reflected directly in earnings. The dollar-offset method is used to assess hedge effectiveness. Since that assessment is based on changes in fair value attributable to changes in spot rates on both the available-for-sale securities and the forward contracts for the portion of the relationship hedged, the amount of hedge ineffectiveness is not significant.
The following table summarizes the gains (losses) on the Company’s fair value hedges for the years ended December 31, 2014 and 2013 and 2012:
	Gains (losses) on fair value hedges(1)
	Year ended December 31,
In millions of dollars	2014			2013			2012
Gain (loss) on the derivatives in designated and qualifying fair value hedges
Interest rate contracts	$	1,546		$	(3,288	)	$	122
Foreign exchange contracts	1,367			265			377
Commodity contracts	(221		)	—			—
Total gain (loss) on the derivatives in designated and qualifying fair value hedges	$	2,692		$	(3,023	)	$	499
Gain (loss) on the hedged item in designated and qualifying fair value hedges
Interest rate hedges	$	(1,496	)	$	3,204		$	(371	)
Foreign exchange hedges	(1,422		)	(185		)	(331		)
Commodity hedges	250			—			—
Total gain (loss) on the hedged item in designated and qualifying fair value hedges	$	(2,668	)	$	3,019		$	(702	)
Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges
Interest rate hedges	$	53		$	(84	)	$	(249	)
Foreign exchange hedges	(16		)	(4		)	16
Total hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	$	37		$	(88	)	$	(233	)
Net gain (loss) excluded from assessment of the effectiveness of fair value hedges
Interest rate contracts	$	(3	)	$	—		$	—
Foreign exchange contracts(2)	(39		)	84			30
Commodity hedges(2)	29			—			—
Total net gain (loss) excluded from assessment of the effectiveness of fair value hedges	$	(13	)	$	84		$	30
-1	Amounts are included in Other revenue on the Consolidated Statement of Income. The accrued interest income on fair value hedges is recorded in Net interest revenue and is excluded from this table.
-2	Amounts relate to the premium associated with forward contracts (differential between spot and contractual forward rates). These amounts are excluded from the assessment of hedge effectiveness and are reflected directly in earnings.
Cash Flow Hedges
Hedging of benchmark interest rate risk
Citigroup hedges variable cash flows associated with floating-rate liabilities and the rollover (re-issuance) of liabilities. Variable cash flows from those liabilities are converted to fixed-rate cash flows by entering into receive-variable, pay-fixed interest rate swaps and receive-variable, pay-fixed forward-starting interest rate swaps. Citi also hedges variable cash flows from recognized and forecasted floating-rate assets. Variable cash flows from those assets are converted to fixed-rate cash flows by entering into receive-fixed, pay-variable interest rate swaps. These cash-flow hedging relationships use either regression analysis or dollar-offset ratio analysis to assess whether the hedging relationships are highly effective at inception and on an ongoing basis. When certain variable interest rates, associated with hedged items, do not qualify as benchmark interest rates, Citigroup designates the risk being hedged as the risk of overall changes in the hedged cash flows. Since efforts are made to match the terms of the derivatives to those of the hedged forecasted cash flows as closely as possible, the amount of hedge ineffectiveness is not significant.
Hedging of foreign exchange risk
Citigroup locks in the functional currency equivalent cash flows of long-term debt and short-term borrowings that are denominated in currencies other than the functional currency of the issuing entity. Depending on the risk management objectives, these types of hedges are designated as either cash flow hedges of only foreign exchange risk or cash flow hedges of both foreign exchange and interest rate risk, and the hedging instruments used are foreign exchange cross-currency swaps and forward contracts. These cash flow hedge relationships use dollar-offset ratio analysis to determine whether the hedging relationships are highly effective at inception and on an ongoing basis.
Hedging of overall changes in cash flows
Citigroup makes purchases of certain
“to-be-announced” (TBA) mortgage-backed securities that meet the definition of a derivative (i.e. a forward securities purchase). Citigroup commonly designates these derivatives as hedges of the overall cash flow variability related to the forecasted acquisition of the TBA mortgage-backed securities. Since the hedged transaction is the gross settlement of the forward contract, hedge effectiveness is assessed by assuring that the terms of the hedging instrument and the hedged forecasted transaction are the same and that delivery of the securities remains probable.
Hedging total return
Citigroup generally manages the risk associated with leveraged loans it has originated or in which it participates by transferring a majority of its exposure to the market through SPEs prior to or shortly after funding. Retained exposures to
leveraged loans receivable are generally hedged using total return swaps.
The amount of hedge ineffectiveness on the cash flow hedges recognized in earnings for the years ended December 31, 2014, 2013 and 2012 is not significant. The pretax change in Accumulated other comprehensive income (loss) from cash flow hedges is presented below:
	Year ended December 31,
In millions of dollars	2014			2013			2012
Effective portion of cash flow hedges included in AOCI
Interest rate contracts	$	299		$	749		$	(322	)
Foreign exchange contracts	(167		)	34			143
Credit derivatives	2			14			—
Total effective portion of cash flow hedges included in AOCI	$	134		$	797		$	(179	)
Effective portion of cash flow hedges reclassified from AOCI to earnings
Interest rate contracts	$	(260	)	$	(700	)	$	(837	)
Foreign exchange contracts	(149		)	(176		)	(180		)
Total effective portion of cash flow hedges reclassified from AOCI to earnings(1)	$	(409	)	$	(876	)	$	(1,017	)
-1	Included primarily in Other revenue and Net interest revenue on the Consolidated Income Statement.
For cash flow hedges, the changes in the fair value of the hedging derivative remaining in Accumulated other comprehensive income (loss) on the Consolidated Balance Sheet will be included in the earnings of future periods to offset the variability of the hedged cash flows when such cash flows affect earnings. The net loss associated with cash flow hedges expected to be reclassified from Accumulated other comprehensive income (loss) within 12 months of December 31, 2014 is approximately $0.4 billion. The maximum length of time over which forecasted cash flows are hedged is 10 years.
The after-tax impact of cash flow hedges on AOCI is shown in Note 20 to the Consolidated Financial Statements.
Net Investment Hedges
Consistent with ASC 830-20, Foreign Currency Matters—Foreign Currency Transactions, ASC 815 allows hedging of the foreign currency risk of a net investment in a foreign operation. Citigroup uses foreign currency forwards, options and foreign-currency-denominated debt instruments to manage the foreign exchange risk associated with Citigroup’s equity investments in several non-U.S.-dollar-functional-currency foreign subsidiaries. Citigroup records the change in the carrying amount of these investments in the Foreign currency translation adjustment account within Accumulated other comprehensive income (loss). Simultaneously, the effective portion of the hedge of this exposure is also recorded in the Foreign currency translation adjustment account and the ineffective portion, if any, is immediately recorded in earnings.
For derivatives designated as net investment hedges, Citigroup follows the forward-rate method outlined in ASC 815-35-35-16 through 35-26. According to that method, all changes in fair value, including changes related to the forward-rate component of the foreign currency forward contracts and the time value of foreign currency options, are recorded in the Foreign currency translation adjustment account within Accumulated other comprehensive income (loss).
For foreign-currency-denominated debt instruments that are designated as hedges of net investments, the translation gain or loss that is recorded in the Foreign currency translation adjustment account is based on the spot exchange rate between the functional currency of the respective subsidiary and the U.S. dollar, which is the functional currency of Citigroup. To the extent the notional amount of the hedging instrument exactly matches the hedged net investment and the underlying exchange rate of the derivative hedging instrument relates to the exchange rate between the functional currency of the net investment and Citigroup’s functional currency (or, in the case of a non-derivative debt instrument, such instrument is denominated in the functional currency of the net investment), no ineffectiveness is recorded in earnings.
The pretax gain (loss) recorded in the Foreign currency translation adjustment account within Accumulated other comprehensive income (loss), related to the effective portion of the net investment hedges, is $2,890 million, $2,370 million and $(3,829) million for the years ended December 31, 2014, 2013 and 2012, respectively.
Credit Derivatives
Citi is a market maker and trades a range of credit derivatives. Through these contracts, Citi either purchases or writes protection on either a single name or a portfolio of reference credits. Citi also uses credit derivatives to help mitigate credit risk in its corporate and consumer loan portfolios and other cash positions, and to facilitate client transactions.
Citi monitors its counterparty credit risk in credit derivative contracts. As of December 31, 2014 and 2013, approximately 98% of the gross receivables are from counterparties with which Citi maintains collateral agreements. A majority of Citi’s top 15 counterparties (by receivable balance owed to Citi) are banks, financial institutions or other dealers. Contracts with these counterparties do not include ratings-based termination events. However, counterparty ratings downgrades may have an incremental effect by lowering the threshold at which Citi may
call for additional collateral.
The range of credit derivatives entered into includes credit default swaps, total return swaps, credit options and credit-linked notes.
A credit default swap is a contract in which, for a fee, a protection seller agrees to reimburse a protection buyer for any losses that occur due to a predefined credit event on a reference entity. These credit events are defined by the terms of the derivative contract and the reference credit and are generally limited to the market standard of failure to pay on indebtedness and bankruptcy of the reference credit and, in a more limited range of transactions, debt restructuring. Credit derivative transactions that reference emerging market entities will also typically include additional credit events to cover the acceleration of indebtedness and the risk of repudiation or a payment moratorium. In certain transactions, protection may be provided on a portfolio of reference entities or asset-backed securities. If there is no credit event, as defined by the specific derivative contract, then the protection seller makes no payments to the protection buyer and receives only the contractually specified fee. However, if a credit event occurs as defined in the specific derivative contract sold, the protection seller will be required to make a payment to the protection buyer. Under certain contracts, the seller of protection may not be required to make payment until a specified amount of losses has occurred with respect to the portfolio and/or may only be required to pay for losses up to a specified amount.
A total return swap typically transfers the total economic performance of a reference asset, which includes all associated cash flows, as well as capital appreciation or depreciation. The protection buyer receives a floating rate of interest and any depreciation on the reference asset from the protection seller and, in return, the protection seller receives the cash flows associated with the reference asset plus any appreciation. Thus, according to the total return swap agreement, the protection seller will be obligated to make a payment any time the floating interest rate payment plus any depreciation of the reference asset exceeds the cash flows associated with the underlying asset. A total return swap may terminate upon a default of the reference asset or a credit event with respect to the reference entity subject to the provisions of the related total return swap agreement between the protection seller and the protection buyer.
A credit option is a credit derivative that allows investors to trade or hedge changes in the credit quality of a reference entity. For example, in a credit spread option, the option writer assumes the obligation to purchase or sell credit protection on the reference entity at a specified “strike” spread level. The option purchaser buys the right to sell credit default protection on the reference entity to, or purchase it from, the option writer at the strike spread level. The payments on credit spread options depend either on a particular credit spread or the price of the underlying credit-sensitive asset or other reference. The options usually terminate if a credit event occurs with respect to the underlying reference entity.
A credit-linked note is a form of credit derivative structured as a debt security with an embedded credit default swap. The purchaser of the note effectively provides credit protection to the issuer by agreeing to receive a return that could be negatively affected by credit events on the underlying reference credit. If the reference entity defaults, the note may be cash settled or physically settled by delivery of a debt security of the reference entity. Thus, the maximum amount of the note purchaser’s exposure is the amount paid for the credit-linked note.
The following tables summarize the key characteristics of Citi’s credit derivatives portfolio by counterparty and derivative form as of December 31, 2014 and December 31, 2013:
	Fair values						Notionals
In millions of dollars at December 31, 2014	Receivable(1)			Payable(2)			Protection			Protection
							purchased			sold
By industry/counterparty
Banks	$	24,828		$	23,189		$	574,764		$	604,700
Broker-dealers	8,093			9,309			204,542			199,693
Non-financial	91			113			3,697			1,595
Insurance and other financial institutions	10,784			11,374			333,384			257,870
Total by industry/counterparty	$	43,796		$	43,985		$	1,116,387		$	1,063,858
By instrument
Credit default swaps and options	$	42,930		$	42,201		$	1,094,199		$	1,054,671
Total return swaps and other	866			1,784			22,188			9,187
Total by instrument	$	43,796		$	43,985		$	1,116,387		$	1,063,858
By rating
Investment grade	$	17,432		$	17,182		$	824,831		$	786,848
Non-investment grade	26,364			26,803			291,556			277,010
Total by rating	$	43,796		$	43,985		$	1,116,387		$	1,063,858
By maturity
Within 1 year	$	4,356		$	4,278		$	250,489		$	229,502
From 1 to 5 years	34,692			35,160			790,251			772,001
After 5 years	4,748			4,547			75,647			62,355
Total by maturity	$	43,796		$	43,985		$	1,116,387		$	1,063,858
-1	The fair value amount receivable is composed of $18,708 million under protection purchased and $25,088 million under protection sold.
-2	The fair value amount payable is composed of $26,527 million under protection purchased and $17,458 million under protection sold.
	Fair values						Notionals
In millions of dollars at December 31, 2013	Receivable(1)			Payable(2)			Protection			Protection
							purchased			sold
By industry/counterparty
Banks	$	24,992		$	23,455		$	739,646		$	727,748
Broker-dealers	8,840			9,820			254,250			224,073
Non-financial	138			162			4,930			2,820
Insurance and other financial institutions	6,447			7,922			216,236			188,722
Total by industry/counterparty	$	40,417		$	41,359		$	1,215,062		$	1,143,363
By instrument
Credit default swaps and options	$	40,233		$	39,930		$	1,201,716		$	1,141,864
Total return swaps and other	184			1,429			13,346			1,499
Total by instrument	$	40,417		$	41,359		$	1,215,062		$	1,143,363
By rating
Investment grade	$	17,150		$	17,174		$	812,918		$	752,640
Non-investment grade	23,267			24,185			402,144			390,723
Total by rating	$	40,417		$	41,359		$	1,215,062		$	1,143,363
By maturity
Within 1 year	$	2,901		$	3,262		$	254,305		$	221,562
From 1 to 5 years	31,674			32,349			883,879			853,391
After 5 years	5,842			5,748			76,878			68,410
Total by maturity	$	40,417		$	41,359		$	1,215,062		$	1,143,363
-1	The fair value amount receivable is composed of $13,744 million under protection purchased and $26,673 million under protection sold.
-2	The fair value amount payable is composed of $28,723 million under protection purchased and $12,636 million under protection sold.
Fair values included in the above tables are prior to application of any netting agreements and cash collateral. For notional amounts, Citi generally has a mismatch between the total notional amounts of protection purchased and sold, and it may hold the reference assets directly, rather than entering into offsetting credit derivative contracts as and when desired. The open risk exposures from credit derivative contracts are largely matched after certain cash positions in reference assets are considered and after notional amounts are adjusted, either to a duration-based equivalent basis or to reflect the level of subordination in tranched structures. The ratings of the credit derivatives portfolio presented in the tables and used to evaluate payment/performance risk are based on the assigned internal or external ratings of the referenced asset or entity. Where external ratings are used, investment-grade ratings are considered to be ‘Baa/BBB’ and above, while anything below is considered non-investment grade. Citi’s internal ratings are in line with the related external rating system.
Citigroup evaluates the payment/performance risk of the credit derivatives for which it stands as a protection seller based on the credit rating assigned to the underlying referenced credit. Credit derivatives written on an underlying non-investment grade reference credit represent greater payment risk to the Company. The non-investment grade category in the table above also includes credit derivatives where the underlying referenced entity has been downgraded subsequent to the inception of the derivative.
The maximum potential amount of future payments under credit derivative contracts presented in the table above is based on the notional value of the derivatives. The Company believes that the notional amount for credit protection sold is not representative of the actual loss exposure based on historical experience. This amount has not been reduced by the value of the reference assets and the related cash flows. In accordance with most credit derivative contracts, should a credit event occur, the Company usually is liable for the difference between the protection sold and the value of the reference assets. Furthermore, the notional amount for credit protection sold has not been reduced for any cash collateral paid to a given counterparty, as such payments would be calculated after netting all derivative exposures, including any credit derivatives with that counterparty in accordance with a related master netting agreement. Due to such netting processes, determining the amount of collateral that corresponds to credit derivative exposures alone is not possible. The Company actively monitors open credit-risk exposures and manages this exposure by using a variety of strategies, including purchased credit derivatives, cash collateral or direct holdings of the referenced assets. This risk mitigation activity is not captured in the table above.
Credit-Risk-Related Contingent Features in Derivatives
Certain derivative instruments contain provisions that require the Company to either post additional collateral or immediately settle any outstanding liability balances upon the occurrence of a specified event related to the credit risk of the Company. These events, which are defined by the existing derivative contracts, are primarily downgrades in the credit ratings of the Company and its affiliates. The fair value (excluding CVA) of all derivative instruments with credit-risk-related contingent features that were in a net liability position at December 31, 2014 and December 31, 2013 was $30 billion and $26 billion, respectively. The Company had posted $27 billion and $24 billion as collateral for this exposure in the normal course of business as of December 31, 2014 and December 31, 2013, respectively.
Each downgrade would trigger additional collateral or cash settlement requirements for the Company and its affiliates. In the event that each legal entity was downgraded a single notch by the three rating agencies as of December 31, 2014, the Company would be required to post an additional $2.0 billion as either collateral or settlement of the derivative transactions. Additionally, the Company would be required to segregate with third-party custodians collateral previously received from existing derivative counterparties in the amount of $0.1 billion upon the single notch downgrade, resulting in aggregate cash obligations and collateral requirements of approximately $2.1 billion.

CONCENTRATIONS_OF_CREDIT_RISK_

CONCENTRATIONS OF CREDIT RISK CONCENTRATIONS OF CREDIT RISK	12 Months Ended
	Dec. 31, 2014
Risks and Uncertainties [Abstract]
CONCENTRATIONS OF CREDIT RISK	CONCENTRATIONS OF CREDIT RISK
	Concentrations of credit risk exist when changes in economic, industry or geographic factors similarly affect groups of counterparties whose aggregate credit exposure is material in relation to Citigroup’s total credit exposure. Although Citigroup’s portfolio of financial instruments is broadly diversified along industry, product, and geographic lines, material transactions are completed with other financial institutions, particularly in the securities trading, derivatives and foreign exchange businesses.
	In connection with the Company’s efforts to maintain a diversified portfolio, the Company limits its exposure to any one geographic region, country or individual creditor and monitors this exposure on a continuous basis. At December 31, 2014, Citigroup’s most significant concentration of credit risk was with the U.S. government and its agencies. The Company’s exposure, which primarily results from trading assets and investments issued by the U.S. government and its agencies, amounted to $216.3 billion and $168.4 billion at December 31, 2014 and 2013, respectively. The Japanese and Mexican governments and their agencies, which are rated investment grade by both Moody’s and S&P, were the next largest exposures. The Company’s exposure to Japan amounted to $32.0 billion and $29.0 billion at December 31, 2014 and 2013, respectively, and was composed of investment securities, loans and trading assets. The Company’s exposure to Mexico amounted to $29.7 billion and $37.0 billion at December 31, 2014 and 2013, respectively, and was composed of investment securities, loans and trading assets.
	The Company’s exposure to states and municipalities amounted to $31.0 billion and $33.1 billion at December 31, 2014 and 2013, respectively, and was composed of trading assets, investment securities, derivatives and lending activities.

FAIR_VALUE_MEASUREMENT

FAIR VALUE MEASUREMENT	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENT	FAIR VALUE MEASUREMENT
	ASC 820-10 Fair Value Measurement, defines fair value, establishes a consistent framework for measuring fair value and requires disclosures about fair value measurements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Among other things, the standard requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.
	Under ASC 820-10, the probability of default of a counterparty is factored into the valuation of derivative positions and includes the impact of Citigroup’s own credit risk on derivatives and other liabilities measured at fair value.
	Fair Value Hierarchy
	ASC 820-10 specifies a hierarchy of inputs based on whether the inputs are observable or unobservable. Observable inputs are developed using market data and reflect market participant assumptions, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs have created the following fair value hierarchy:
	•	Level 1: Quoted prices for identical instruments in active markets.
	•	Level 2: Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets.
	•	Level 3: Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.
	As required under the fair value hierarchy, the Company considers relevant and observable market inputs in its valuations where possible. The frequency of transactions, the size of the bid-ask spread and the amount of adjustment necessary when comparing similar transactions are all factors in determining the liquidity of markets and the relevance of observed prices in those markets.
	The Company’s policy with respect to transfers between levels of the fair value hierarchy is to recognize transfers into and out of each level as of the end of the reporting period.
	Determination of Fair Value
	For assets and liabilities carried at fair value, the Company measures such value using the procedures set out below, irrespective of whether these assets and liabilities are measured at fair value as a result of an election or whether they are required to be measured at fair value.
	When available, the Company generally uses quoted market prices to determine fair value and classifies such items as Level 1. In some cases where a market price is available, the Company will make use of acceptable practical expedients (such as matrix pricing) to calculate fair value, in which case the items are classified as Level 2.
	The Company may also apply a price-based methodology, which utilizes, where available, quoted prices or other market information obtained from recent trading activity in positions with the same or similar characteristics to the position being valued. The market activity and the amount of the bid-ask spread are among the factors considered in determining the liquidity of markets and the relevance of observed prices from those markets. If relevant and observable prices are available, those valuations may be classified as Level 2. When less liquidity exists for a security or loan, a quoted price is stale, a significant adjustment to the price of a similar security is necessary to reflect differences in the terms of the actual security or loan being valued, or prices from independent sources are insufficient to corroborate the valuation, the “price” inputs are considered unobservable and the fair value measurements are classified as Level 3.
	If quoted market prices are not available, fair value is based upon internally developed valuation techniques that use, where possible, current market-based parameters, such as interest rates, currency rates and option volatilities. Items valued using such internally generated valuation techniques are classified according to the lowest level input or value driver that is significant to the valuation. Thus, an item may be classified as Level 3 even though there may be some significant inputs that are readily observable.
	Fair value estimates from internal valuation techniques are verified, where possible, to prices obtained from independent vendors or brokers. Vendors and brokers’ valuations may be based on a variety of inputs ranging from observed prices to proprietary valuation models.
	The following section describes the valuation methodologies used by the Company to measure various financial instruments at fair value, including an indication of the level in the fair value hierarchy in which each instrument is generally classified. Where appropriate, the description includes details of the valuation models, the key inputs to those models and any significant assumptions.
	Market valuation adjustments
	Generally, the unit of account for a financial instrument is the individual financial instrument. The Company applies market valuation adjustments that are consistent with the unit of account, which does not include adjustment due to the size of the Company’s position, except as follows. ASC 820-10 permits an exception, through an accounting policy election, to measure the fair value of a portfolio of financial assets and financial liabilities on the basis of the net open risk position when certain criteria are met. Citi has elected to measure certain portfolios of financial instruments, such as derivatives, that meet those criteria on the basis of the net open risk position. The Company applies market valuation adjustments, including adjustments to account for the size of the net open risk position, consistent with market participant assumptions and in accordance with the unit of account.
	Liquidity adjustments are applied to items in Level 2 or Level 3 of the fair-value hierarchy in an effort to ensure that the fair value reflects the price at which the net open risk position could be liquidated. The liquidity adjustment is based on the bid/offer spread for an instrument. When Citi has elected to measure certain portfolios of financial investments, such as derivatives, on the basis of the net open risk position, the liquidity adjustment is adjusted to take into account the size of the position.
	Credit valuation adjustments (CVA) and, effective in the third quarter of 2014, funding valuation adjustments (FVA), are applied to over-the-counter (OTC) derivative instruments in which the base valuation generally discounts expected cash flows using the relevant base interest rate curve for the currency of the derivative (e.g., LIBOR for uncollateralized U.S. dollar derivatives). As not all counterparties have the same credit risk as that implied by the relevant base curve, a CVA is necessary to incorporate the market view of both counterparty credit risk and Citi’s own credit risk in the valuation. FVA reflects a market funding risk premium inherent in the uncollateralized portion of derivative portfolios, and in collateralized derivatives where the terms of the agreement do not permit the reuse of the collateral received.
	Citi’s CVA methodology is composed of two steps. First, the credit exposure profile for each counterparty is determined using the terms of all individual derivative positions and a Monte Carlo simulation or other quantitative analysis to generate a series of expected cash flows at future points in time. The calculation of this exposure profile considers the effect of credit risk mitigants, including pledged cash or other collateral and any legal right of offset that exists with a counterparty through arrangements such as netting agreements. Individual derivative contracts that are subject to an enforceable master netting agreement with a counterparty are aggregated for this purpose, since it is those aggregate net cash flows that are subject to nonperformance risk. This process identifies specific, point-in-time future cash flows that are subject to nonperformance risk, rather than using the current recognized net asset or liability as a basis to measure the CVA. Second, market-based views of default probabilities
	derived from observed credit spreads in the credit default swap
	(CDS) market are applied to the expected future cash flows
	determined in step one. Citi’s own-credit CVA is determined
	using Citi-specific CDS spreads for the relevant tenor.
	Generally, counterparty CVA is determined using CDS spread
	indices for each credit rating and tenor. For certain identified
	netting sets where individual analysis is practicable
	(e.g., exposures to counterparties with liquid CDSs),
	counterparty-specific CDS spreads are used.
	The CVA and FVA are designed to incorporate a market view of the credit and funding risk, respectively, inherent in the derivative portfolio. However, most unsecured derivative instruments are negotiated bilateral contracts and are not commonly transferred to third parties. Derivative instruments are normally settled contractually or, if terminated early, are terminated at a value negotiated bilaterally between the counterparties. Thus, the CVA and FVA may not be realized upon a settlement or termination in the normal course of business. In addition, all or a portion of these adjustments may be reversed or otherwise adjusted in future periods in the event of changes in the credit or funding risk associated with the derivative instruments.
	The table below summarizes the CVA and FVA applied to the fair value of derivative instruments for the periods indicated:
		Credit and funding valuation adjustments
		contra-liability (contra-asset)
	In millions of dollars	December 31,			December 31,
		2014			2013
	Counterparty CVA	$	(1,853	)	$	(1,733	)
	Asset FVA	(518		)	—
	Citigroup (own-credit) CVA	580			651
	Liability FVA	19			—
	Total CVA—derivative instruments (1)	$	(1,772	)	$	(1,082	)
	-1	FVA is included with CVA for presentation purposes.
	The table below summarizes pretax gains (losses) related to changes in CVA on derivative instruments, net of hedges, FVA on derivatives and debt valuation adjustments (DVA) on Citi’s own fair value option (FVO) liabilities for the periods indicated:
		Credit/funding/debt valuation
		adjustments gain (loss)
	In millions of dollars	2014			2013			2012
	Counterparty CVA	$	(43	)	$	291		$	805
	Asset FVA	(518		)	—			—
	Own-credit CVA	(65		)	(223		)	(1,126		)
	Liability FVA	19			—			—
	Total CVA—derivative instruments	$	(607	)	$	68		$	(321	)
	DVA related to own FVO liabilities	$	217		$	(410	)	$	(2,009	)
	Total CVA and DVA (1)	$	(390	)	$	(342	)	$	(2,330	)
	-1	FVA is included with CVA for presentation purposes.
	Valuation Process for Fair Value Measurements
	Price verification procedures and related internal control procedures are governed by the Citigroup Pricing and Price Verification Policy and Standards, which is jointly owned by Finance and Risk Management. Finance has implemented the ICG Pricing and Price Verification Standards and Procedures to facilitate compliance with this policy.
	For fair value measurements of substantially all assets and liabilities held by the Company, individual business units are responsible for valuing the trading account assets and liabilities, and Product Control within Finance performs independent price verification procedures to evaluate those fair value measurements. Product Control is independent of the individual business units and reports to the Global Head of Product Control. It has authority over the valuation of financial assets and liabilities. Fair value measurements of assets and liabilities are determined using various techniques, including, but not limited to, discounted cash flows and internal models, such as option and correlation models.
	Based on the observability of inputs used, Product Control classifies the inventory as Level 1, Level 2 or Level 3 of the fair value hierarchy. When a position involves one or more significant inputs that are not directly observable, price verification procedures are performed that may include reviewing relevant historical data, analyzing profit and loss, valuing each component of a structured trade individually, and benchmarking, among others.
	Reports of inventory that is classified within Level 3 of the fair value hierarchy are distributed to senior management in Finance, Risk and the business. This inventory is also discussed in Risk Committees and in monthly meetings with senior trading management. As deemed necessary, reports may go to the Audit Committee of the Board of Directors or to the full Board of Directors. Whenever an adjustment is needed to bring the price of an asset or liability to its exit price, Product Control reports it to management along with other price verification results.
	In addition, the pricing models used in measuring fair value are governed by an independent control framework. Although the models are developed and tested by the individual business units, they are independently validated by the Model Validation Group within Risk Management and reviewed by Finance with respect to their impact on the price verification procedures. The purpose of this independent control framework is to assess model risk arising from models’ theoretical soundness, calibration techniques where needed, and the appropriateness of the model for a specific product in a defined market. To ensure their continued applicability, models are independently reviewed annually. In addition, Risk Management approves and maintains a list of products permitted to be valued under each approved model for a given business.
	Securities purchased under agreements to resell and securities sold under agreements to repurchase
	No quoted prices exist for such instruments, so fair value is determined using a discounted cash-flow technique. Cash flows are estimated based on the terms of the contract, taking into account any embedded derivative or other features. Expected cash flows are discounted using interest rates appropriate to the maturity of the instrument as well as the nature of the underlying collateral. Generally, when such instruments are held at fair value, they are classified within Level 2 of the fair value hierarchy, as the inputs used in the valuation are readily observable. However, certain long-dated positions are classified within Level 3 of the fair value hierarchy.
	Trading account assets and liabilities—trading securities and trading loans
When available, the Company generally uses quoted market prices in active markets to determine the fair value of trading securities; such items are classified as Level 1 of the fair value hierarchy. Examples include some government securities and exchange-traded equity securities.
For bonds and secondary market loans traded over the counter, the Company generally determines fair value utilizing valuation techniques, including discounted cash flows, price-based and internal models, such as Black-Scholes and Monte Carlo simulation. Fair value estimates from these internal valuation techniques are verified, where possible, to prices obtained from independent sources, including third-party vendors. Vendors compile prices from various sources and may apply matrix pricing for similar bonds or loans where no price is observable. A price-based methodology utilizes, where available, quoted prices or other market information obtained from recent trading activity of assets with similar characteristics to the bond or loan being valued. The yields used in discounted cash flow models are derived from the same price information. Trading securities and loans priced using such methods are generally classified as Level 2. However, when less liquidity exists for a security or loan, a quoted price is stale, a significant adjustment to the
price of a similar security or loan is necessary to reflect differences in the terms of the actual security or loan being valued, or prices from independent sources are insufficient to corroborate valuation, a loan or security is generally classified as Level 3. The price input used in a price-based methodology may be zero for a security, such as a subprime CDO, that is not receiving any principal or interest and is currently written down to zero.
Where the Company’s principal market for a portfolio of loans is the securitization market, the Company uses the securitization price to determine the fair value of the portfolio. The securitization price is determined from the assumed proceeds of a hypothetical securitization in the current market, adjusted for transformation costs (i.e., direct costs other than transaction costs) and securitization uncertainties such as market conditions and liquidity. As a result of the severe reduction in the level of activity in certain securitization markets since the second half of 2007, observable securitization prices for certain directly comparable portfolios of loans have not been readily available. Therefore, such portfolios of loans are generally classified as Level 3 of the fair value hierarchy. However, for other loan securitization markets, such as commercial real estate loans, price verification of the hypothetical securitizations has been possible, since these markets have remained active. Accordingly, this loan portfolio is classified as Level 2 of the fair value hierarchy.
Trading account assets and liabilities—derivatives
Exchange-traded derivatives, measured at fair value using quoted (i.e., exchange) prices in active markets, where available, are classified as Level 1 of the fair value hierarchy.
Derivatives without a quoted price in an active market and derivatives executed over the counter are valued using internal valuation techniques. These derivative instruments are classified as either Level 2 or Level 3 depending upon the observability of the significant inputs to the model.
The valuation techniques and inputs depend on the type of derivative and the nature of the underlying instrument. The principal techniques used to value these instruments are discounted cash flows and internal models, including Black-Scholes and Monte Carlo simulation.
The key inputs depend upon the type of derivative and the nature of the underlying instrument and include interest rate yield curves, foreign-exchange rates, volatilities and correlation. The Company uses overnight indexed swap (OIS) curves as fair value measurement inputs for the valuation of certain collateralized derivatives. Citi uses the relevant benchmark curve for the currency of the derivative (e.g., the London Interbank Offered Rate for U.S. dollar derivatives) as the discount rate for uncollateralized derivatives.
As referenced above, during the third quarter of 2014, Citi incorporated FVA into the fair value measurements due to what it believes to be an industry migration toward incorporating the market’s view of funding risk premium in OTC derivatives. In connection with its implementation of FVA in 2014, Citigroup incurred a pretax charge of $499 million, which was reflected in Principal transactions as a change in accounting estimate. Citi’s FVA methodology leverages the existing CVA methodology to estimate a funding exposure profile. The calculation of this exposure profile considers collateral agreements where the terms do not permit the firm to reuse the collateral received, including where counterparties post collateral to third-party custodians.
Subprime-related direct exposures in CDOs
The valuation of high-grade and mezzanine asset-backed security (ABS) CDO positions utilizes prices based on the underlying assets of each high-grade and mezzanine ABS CDO.
For most of the lending and structured direct subprime exposures, fair value is determined utilizing observable transactions where available, other market data for similar assets in markets that are not active and other internal valuation techniques.
Investments
The investments category includes available-for-sale debt and marketable equity securities whose fair value is generally determined by utilizing similar procedures described for trading securities above or, in some cases, using vendor pricing as the primary source.
Also included in investments are nonpublic investments in private equity and real estate entities. Determining the fair value of nonpublic securities involves a significant degree of management resources and judgment, as no quoted prices exist and such securities are generally very thinly traded. In addition, there may be transfer restrictions on private equity securities. The Company’s process for determining the fair value of such securities utilizes commonly accepted valuation techniques, including comparables analysis. In determining the fair value of nonpublic securities, the Company also considers events such as a proposed sale of the investee company, initial public offerings, equity issuances or other observable transactions. As discussed in Note 14 to the Consolidated Financial Statements, the Company uses net asset value to value certain of these investments.
Private equity securities are generally classified as Level 3 of the fair value hierarchy.
Short-term borrowings and long-term debt
Where fair value accounting has been elected, the fair value of non-structured liabilities is determined by utilizing internal models using the appropriate discount rate for the applicable maturity. Such instruments are generally classified as Level 2 of the fair value hierarchy when all significant inputs are readily observable.
The Company determines the fair value of hybrid financial instruments, including structured liabilities, using the appropriate derivative valuation methodology (described above in “Trading account assets and liabilities—derivatives”) given the nature of the embedded risk profile. Such instruments are classified as Level 2 or Level 3 depending on the observability of significant inputs to the model.
Alt-A mortgage securities
The Company classifies its Alt-A mortgage securities as held-to-maturity, available-for-sale or trading investments. The securities classified as trading and available-for-sale are recorded at fair value with changes in fair value reported in current earnings and AOCI, respectively. For these purposes, Citi defines Alt-A mortgage securities as non-agency residential mortgage-backed securities (RMBS) where (i) the underlying collateral has weighted average FICO scores between 680 and 720 or (ii) for instances where FICO scores are greater than 720, RMBS have 30% or less of the underlying collateral composed of full documentation loans.
Similar to the valuation methodologies used for other trading securities and trading loans, the Company generally determines the fair values of Alt-A mortgage securities utilizing internal valuation techniques. Fair value estimates from internal valuation techniques are verified, where possible, to prices obtained from independent vendors. Consensus data providers compile prices from various sources. Where available, the Company may also make use of quoted prices for recent trading activity in securities with the same or similar characteristics to the security being valued.
The valuation techniques used for Alt-A mortgage securities, as with other mortgage exposures, are price-based and yield analysis. The primary market-derived input is yield. Cash flows are based on current collateral performance with prepayment rates and loss projections reflective of current economic conditions of housing price change, unemployment rates, interest rates, borrower attributes and other market indicators.
Alt-A mortgage securities that are valued using these methods are generally classified as Level 2. However, Alt-A mortgage securities backed by Alt-A mortgages of lower quality or subordinated tranches in the capital structure are mostly classified as Level 3 due to the reduced liquidity that exists for such positions, which reduces the reliability of prices available from independent sources.
Items Measured at Fair Value on a Recurring Basis
The following tables present for each of the fair value hierarchy levels the Company’s assets and liabilities that are measured at fair value on a recurring basis at December 31, 2014 and December 31, 2013. The Company’s hedging of positions that have been classified in the Level 3 category is not limited to other financial instruments (hedging instruments) that have been classified as Level 3, but also instruments classified as Level 1 or Level 2 of the fair value hierarchy. The effects of these hedges are presented gross in the following table.
Fair Value Levels
In millions of dollars at December 31, 2014	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
										inventory						balance
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	—		$	187,922		$	3,398		$	191,320		$	(47,129	)	$	144,191
Trading non-derivative assets
Trading mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	—		$	25,968		$	1,085		$	27,053		$	—		$	27,053
Residential	—			2,158			2,680			4,838			—			4,838
Commercial	—			3,903			440			4,343			—			4,343
Total trading mortgage-backed securities	$	—		$	32,029		$	4,205		$	36,234		$	—		$	36,234
U.S. Treasury and federal agency securities	$	15,991		$	4,483		$	—		$	20,474		$	—		$	20,474
State and municipal	—			3,161			241			3,402			—			3,402
Foreign government	39,332			26,736			206			66,274			—			66,274
Corporate	—			25,640			820			26,460			—			26,460
Equity securities	51,346			4,281			2,219			57,846			—			57,846
Asset-backed securities	—			1,252			3,294			4,546			—			4,546
Other trading assets	—			9,221			4,372			13,593			—			13,593
Total trading non-derivative assets	$	106,669		$	106,803		$	15,357		$	228,829		$	—		$	228,829
Trading derivatives
Interest rate contracts	$	74		$	634,318		$	4,061		$	638,453
Foreign exchange contracts	—			154,744			1,250			155,994
Equity contracts	2,748			19,969			2,035			24,752
Commodity contracts	647			21,850			1,023			23,520
Credit derivatives	—			40,618			2,900			43,518
Total trading derivatives	$	3,469		$	871,499		$	11,269		$	886,237
Cash collateral paid (3)										$	6,523
Netting agreements													$	(777,178	)
Netting of cash collateral received (7)													(47,625		)
Total trading derivatives	$	3,469		$	871,499		$	11,269		$	892,760		$	(824,803	)	$	67,957
Investments
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	—		$	36,053		$	38		$	36,091		$	—		$	36,091
Residential	—			8,355			8			8,363			—			8,363
Commercial	—			553			1			554			—			554
Total investment mortgage-backed securities	$	—		$	44,961		$	47		$	45,008		$	—		$	45,008
U.S. Treasury and federal agency securities	$	110,710		$	12,974		$	6		$	123,690		$	—		$	123,690
State and municipal	$	—		$	10,519		$	2,180		$	12,699		$	—		$	12,699
Foreign government	39,014			51,005			678			90,697			—			90,697
Corporate	5			11,480			672			12,157			—			12,157
Equity securities	1,770			274			681			2,725			—			2,725
Asset-backed securities	—			11,957			549			12,506			—			12,506
Other debt securities	—			661			—			661			—			661
Non-marketable equity securities	—			233			2,525			2,758			—			2,758
Total investments	$	151,499		$	144,064		$	7,338		$	302,901		$	—		$	302,901
In millions of dollars at December 31, 2014	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
										inventory						balance
Loans(4)	$	—		$	2,793		$	3,108		$	5,901		$	—		$	5,901
Mortgage servicing rights	—			—			1,845			1,845			—			1,845
Non-trading derivatives and other financial assets measured on a recurring basis, gross	$	—		$	9,352		$	78		$	9,430
Cash collateral paid(5)										123
Netting of cash collateral received(8)													$	(1,791	)
Non-trading derivatives and other financial assets measured on a recurring basis	$	—		$	9,352		$	78		$	9,553		$	(1,791	)	$	7,762
Total assets	$	261,637		$	1,322,433		$	42,393		$	1,633,109		$	(873,723	)	$	759,386
Total as a percentage of gross assets(6)	16.1		%	81.3		%	2.6		%
Liabilities
Interest-bearing deposits	$	—		$	1,198		$	486		$	1,684		$	—		$	1,684
Federal funds purchased and securities loaned or sold under agreements to repurchase	—			82,811			1,043			83,854			(47,129		)	36,725
Trading account liabilities
Securities sold, not yet purchased	59,463			11,057			424			70,944			—			70,944
Trading derivatives
Interest rate contracts	77			617,933			4,272			622,282
Foreign exchange contracts	—			158,354			472			158,826
Equity contracts	2,955			26,616			2,898			32,469
Commodity contracts	669			22,872			2,645			26,186
Credit derivatives	—			39,787			3,643			43,430
Total trading derivatives	$	3,701		$	865,562		$	13,930		$	883,193
Cash collateral received(7)										$	9,846
Netting agreements													$	(777,178	)
Netting of cash collateral paid													(47,769		)
Total trading derivatives	$	3,701		$	865,562		$	13,930		$	893,039		$	(824,947	)	$	68,092
Short-term borrowings	$	—		$	1,152		$	344		$	1,496		$	—		$	1,496
Long-term debt	—			18,890			7,290			26,180			—			26,180
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross	$	—		$	1,777		$	7		$	1,784
Cash collateral received(8)										7
Netting of cash collateral paid(5)													$	(15	)
Total non-trading derivatives and other financial liabilities measured on a recurring basis	$	—		$	1,777		$	7		$	1,791		$	(15	)	$	1,776
Total liabilities	$	63,164		$	982,447		$	23,524		$	1,078,988		$	(872,091	)	$	206,897
Total as a percentage of gross liabilities(6)	5.9		%	91.9		%	2.2		%
-1	For the year ended December 31, 2014, the Company transferred assets of approximately $4.1 billion from Level 1 to Level 2, primarily related to foreign government securities not traded in active markets and Citi refining its methodology for certain equity contracts to reflect the prevalence of off-exchange trading. During the year ended December 31, 2014, the Company transferred assets of approximately $4.2 billion from Level 2 to Level 1, primarily related to foreign government bonds traded with sufficient frequency to constitute a liquid market. During the year ended December 31, 2014, the Company transferred liabilities of approximately $1.4 billion from Level 1 to Level 2, as Citi refined its methodology for certain equity contracts to reflect the prevalence of off-exchange trading. During the year ended December 31, 2014, there were no material transfers of liabilities from Level 2 to Level 1.
-2	Represents netting of: (i) the amounts due under securities purchased under agreements to resell and the amounts owed under securities sold under agreements to repurchase; and (ii) derivative exposures covered by a qualifying master netting agreement and cash collateral offsetting.
-3	Reflects the net amount of $54,292 million of gross cash collateral paid, of which $47,769 million was used to offset derivative liabilities.
-4	There is no allowance for loan losses recorded for loans reported at fair value.
-5	Reflects the net amount of $138 million of gross cash collateral paid, of which $15 million was used to offset non-trading derivative liabilities.
-6	Because the amount of the cash collateral paid/received has not been allocated to the Level 1, 2 and 3 subtotals, these percentages are calculated based on total assets and liabilities measured at fair value on a recurring basis, excluding the cash collateral paid/received on derivatives.
-7	Reflects the net amount of $57,471 million of gross cash collateral received, of which $47,625 million was used to offset derivative assets.
-8	Reflects the net amount of $1,798 million of gross cash collateral received, of which $1,791 million was used to offset non-trading derivative assets.
Fair Value Levels
In millions of dollars at December 31, 2013	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
										inventory						balance
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	—		$	172,848		$	3,566		$	176,414		$	(32,331	)	$	144,083
Trading non-derivative assets
Trading mortgage-backed securities
U.S. government-sponsored agency guaranteed	—			22,861			1,094			23,955			—			23,955
Residential	—			1,223			2,854			4,077			—			4,077
Commercial	—			2,318			256			2,574			—			2,574
Total trading mortgage-backed securities	$	—		$	26,402		$	4,204		$	30,606		$	—		$	30,606
U.S. Treasury and federal agency securities	$	12,080		$	2,757		$	—		$	14,837		$	—		$	14,837
State and municipal	—			2,985			222			3,207			—			3,207
Foreign government	49,220			25,220			416			74,856			—			74,856
Corporate	—			28,699			1,835			30,534			—			30,534
Equity securities	58,761			1,958			1,057			61,776			—			61,776
Asset-backed securities	—			1,274			4,342			5,616			—			5,616
Other trading assets	—			8,491			3,184			11,675			—			11,675
Total trading non-derivative assets	$	120,061		$	97,786		$	15,260		$	233,107		$	—		$	233,107
Trading derivatives
Interest rate contracts	$	11		$	624,902		$	3,467		$	628,380
Foreign exchange contracts	40			91,189			1,325			92,554
Equity contracts	5,793			17,611			1,473			24,877
Commodity contracts	506			7,775			801			9,082
Credit derivatives	—			37,336			3,010			40,346
Total trading derivatives	$	6,350		$	778,813		$	10,076		$	795,239
Cash collateral paid(3)										$	6,073
Netting agreements													$	(713,598	)
Netting of cash collateral received(6)													(34,893		)
Total trading derivatives	$	6,350		$	778,813		$	10,076		$	801,312		$	(748,491	)	$	52,821
Investments
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	—		$	41,810		$	187		$	41,997		$	—		$	41,997
Residential	—			10,103			102			10,205			—			10,205
Commercial	—			453			—			453			—			453
Total investment mortgage-backed securities	$	—		$	52,366		$	289		$	52,655		$	—		$	52,655
U.S. Treasury and federal agency securities	$	69,139		$	18,449		$	8		$	87,596		$	—		$	87,596
State and municipal	$	—		$	17,297		$	1,643		$	18,940		$	—		$	18,940
Foreign government	35,179			60,948			344			96,471			—			96,471
Corporate	4			10,841			285			11,130			—			11,130
Equity securities	2,583			336			815			3,734			—			3,734
Asset-backed securities	—			13,314			1,960			15,274			—			15,274
Other debt securities	—			661			50			711			—			711
Non-marketable equity securities	—			358			4,347			4,705			—			4,705
Total investments	$	106,905		$	174,570		$	9,741		$	291,216		$	—		$	291,216
In millions of dollars at December 31, 2013	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
										inventory						balance
Loans(4)	$	—		$	886		$	4,143		$	5,029		$	—		$	5,029
Mortgage servicing rights	—			—			2,718			2,718			—			2,718
Non-trading derivatives and other financial assets measured on a recurring basis, gross	$	—		$	9,811		$	181		$	9,992
Cash collateral paid										82
Netting of cash collateral received(7)													$	(2,951	)
Non-trading derivatives and other financial assets measured on a recurring basis	$	—		$	9,811		$	181		$	10,074		$	(2,951	)	$	7,123
Total assets	$	233,316		$	1,234,714		$	45,685		$	1,519,870		$	(783,773	)	$	736,097
Total as a percentage of gross assets(5)	15.4		%	81.6		%	3		%
Liabilities
Interest-bearing deposits	$	—		$	787		$	890		$	1,677		$	—		$	1,677
Federal funds purchased and securities loaned or sold under agreements to repurchase	—			85,576			902			86,478			(32,331		)	54,147
Trading account liabilities
Securities sold, not yet purchased	51,035			9,883			590			61,508						61,508
Trading account derivatives
Interest rate contracts	12			614,586			2,628			617,226
Foreign exchange contracts	29			87,978			630			88,637
Equity contracts	5,783			26,178			2,331			34,292
Commodity contracts	363			7,613			2,194			10,170
Credit derivatives	—			37,510			3,284			40,794
Total trading derivatives	$	6,187		$	773,865		$	11,067		$	791,119
Cash collateral received(6)										$	8,827
Netting agreements													$	(713,598	)
Netting of cash collateral paid(3)													(39,094		)
Total trading derivatives	$	6,187		$	773,865		$	11,067		$	799,946		$	(752,692	)	$	47,254
Short-term borrowings	$	—		$	3,663		$	29		$	3,692		$	—		$	3,692
Long-term debt	—			19,256			7,621			26,877			—			26,877
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross	$	—		$	1,719		$	10		$	1,729
Cash collateral received(7)										$	282
Non-trading derivatives and other financial liabilities measured on a recurring basis	—			1,719			10			2,011						2,011
Total liabilities	$	57,222		$	894,749		$	21,109		$	982,189		$	(785,023	)	$	197,166
Total as a percentage of gross liabilities(5)	5.9		%	92		%	2.2		%
-1	For the year ended December 31, 2013, the Company transferred assets of approximately $2.5 billion from Level 1 to Level 2, primarily related to foreign government securities, which were not traded with sufficient frequency to constitute an active market. During the year ended December 31, 2013, the Company transferred assets of approximately $49.3 billion from Level 2 to Level 1, substantially all related to U.S. Treasury securities held across the Company’s major investment portfolios where Citi obtained additional information from its external pricing sources to meet the criteria for Level 1 classification. There were no material liability transfers between Level 1 and Level 2 during the year ended December 31, 2013.
-2	Represents netting of: (i) the amounts due under securities purchased under agreements to resell and the amounts owed under securities sold under agreements to repurchase; and (ii) derivative exposures covered by a qualifying master netting agreement and cash collateral offsetting.
-3	Reflects the net amount of $45,167 million of gross cash collateral paid, of which $39,094 million was used to offset derivative liabilities.
-4	There is no allowance for loan losses recorded for loans reported at fair value.
-5	Because the amount of the cash collateral paid/received has not been allocated to the Level 1, 2 and 3 subtotals, these percentages are calculated based on total assets and liabilities measured at fair value on a recurring basis, excluding the cash collateral paid/received on derivatives.
-6	Reflects the net amount of $43,720 million of gross cash collateral received, of which $34,893 million was used to offset derivative assets.
-7	Reflects the net amount of $3,233 million of gross cash collateral received, of which $2,951 million was used to offset derivative assets.
Changes in Level 3 Fair Value Category
The following tables present the changes in the Level 3 fair value category for the years ended December 31, 2014 and 2013. As discussed above, the Company classifies financial instruments as Level 3 of the fair value hierarchy when there is reliance on at least one significant unobservable input to the valuation model. In addition to these unobservable inputs, the valuation models for Level 3 financial instruments typically also rely on a number of inputs that are readily observable either directly or indirectly. The gains and losses presented below include changes in the fair value related to both observable and unobservable inputs.
The Company often hedges positions with offsetting positions that are classified in a different level. For example, the gains and losses for assets and liabilities in the Level 3 category presented in the tables below do not reflect the effect of offsetting losses and gains on hedging instruments that have been classified by the Company in the Level 1 and Level 2 categories. In addition, the Company hedges items classified in the Level 3 category with instruments also classified in Level 3 of the fair value hierarchy. The effects of these hedges are presented gross in the following tables.
Level 3 Fair Value Rollforward
				Net realized/unrealized						Transfers																				Unrealized
				gains (losses) incl. in																										gains
																														(losses)
In millions of dollars	Dec. 31, 2013			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2014			still held(3)
				transactions						Level 3			Level 3
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	3,566		$	(61	)	$	—		$	84		$	(8	)	$	75		$	—	$	—		$	(258	)	$	3,398		$	133
Trading non-derivative assets
Trading mortgage-backed securities
U.S. government-sponsored agency guaranteed	1,094			117			—			854			(966		)	714			26		(695		)	(59		)	1,085			8
Residential	2,854			457			—			442			(514		)	2,582			—		(3,141		)	—			2,680			132
Commercial	256			17			—			187			(376		)	758			—		(402		)	—			440			(4		)
Total trading mortgage-backed securities	$	4,204		$	591		$	—		$	1,483		$	(1,856	)	$	4,054		$	26	$	(4,238	)	$	(59	)	$	4,205		$	136
U.S. Treasury and federal agency securities	$	—		$	3		$	—		$	—		$	—		$	7		$	—	$	(10	)	$	—		$	—		$	—
State and municipal	222			10			—			150			(105		)	34			—		(70		)	—			241			1
Foreign government	416			(56		)	—			130			(253		)	676			—		(707		)	—			206			5
Corporate	1,835			(127		)	—			465			(502		)	1,988			—		(2,839		)	—			820			(139		)
Equity securities	1,057			87			—			142			(209		)	1,437			—		(295		)	—			2,219			337
Asset-backed securities	4,342			876			—			158			(332		)	3,893			—		(5,643		)	—			3,294			3
Other trading assets	3,184			269			—			2,637			(2,278		)	5,427			—		(4,490		)	(377		)	4,372			31
Total trading non-derivative assets	$	15,260		$	1,653		$	—		$	5,165		$	(5,535	)	$	17,478		$	26	$	(18,292	)	$	(398	)	$	15,357		$	374
Trading derivatives, net(4)
Interest rate contracts	$	839		$	(818	)	$	—		$	24		$	(98	)	$	113		$	—	$	(162	)	$	(109	)	$	(211	)	$	(414	)
Foreign exchange contracts	695			92			—			47			(39		)	59			—		(59		)	(17		)	778			56
Equity contracts	(858		)	482			—			(916		)	766			435			—		(279		)	(493		)	(863		)	(274		)
Commodity contracts	(1,393		)	(338		)	—			92			(12		)	—			—		—			29			(1,622		)	(174		)
Credit derivatives	(274		)	(567		)	—			4			(156		)	103			—		(3		)	150			(743		)	(369		)
Total trading derivatives, net(4)	$	(991	)	$	(1,149	)	$	—		$	(749	)	$	461		$	710		$	—	$	(503	)	$	(440	)	$	(2,661	)	$	(1,175	)
				Net realized/unrealized						Transfers																				Unrealized
				gains (losses) incl. in																										gains
																														(losses)
In millions of dollars	Dec. 31, 2013			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2014			still held(3)
				transactions						Level 3			Level 3
Investments
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	187		$	—		$	52		$	60		$	(203	)	$	17		$	—	$	(73	)	$	(2	)	$	38		$	(8	)
Residential	102			—			33			31			(2		)	17			—		(173		)	—			8			—
Commercial	—			—			(6		)	4			(7		)	10			—		—			—			1			—
Total investment mortgage-backed securities	$	289		$	—		$	79		$	95		$	(212	)	$	44		$	—	$	(246	)	$	(2	)	$	47		$	(8	)
U.S. Treasury and federal agency securities	$	8		$	—		$	—		$	—		$	—		$	—		$	—	$	(2	)	$	—		$	6		$	—
State and municipal	1,643			—			(64		)	811			(584		)	923			—		(549		)	—			2,180			49
Foreign government	344			—			(27		)	286			(105		)	851			—		(490		)	(181		)	678			(17		)
Corporate	285			—			(6		)	26			(143		)	728			—		(218		)	—			672			(4		)
Equity securities	815			—			111			19			(19		)	10			—		(255		)	—			681			(78		)
Asset-backed securities	1,960			—			41			—			(47		)	95			—		(195		)	(1,305		)	549			(18		)
Other debt securities	50			—			(1		)	—			—			116			—		(115		)	(50		)	—			—
Non-marketable equity securities	4,347			—			94			67			—			707			—		(787		)	(1,903		)	2,525			81
Total investments	$	9,741		$	—		$	227		$	1,304		$	(1,110	)	$	3,371		$	—	$	(2,857	)	$	(3,338	)	$	7,338		$	5
Loans	$	4,143		$	—		$	(233	)	$	92		$	6		$	951		$	197	$	(895	)	$	(1,153	)	$	3,108		$	37
Mortgage servicing rights	2,718			—			(390		)	—			—			—			217		(317		)	(383		)	1,845			(390		)
Other financial assets measured on a recurring basis	181			—			100			(83		)	—			3			164		(10		)	(277		)	78			14
Liabilities
Interest-bearing deposits	$	890		$	—		$	357		$	5		$	(12	)	$	—		$	127	$	—		$	(167	)	$	486		$	(69	)
Federal funds purchased and securities loaned or sold under agreements to repurchase	902			(6		)	—			54			—			78			—		220			(217		)	1,043			(34		)
Trading account liabilities
Securities sold, not yet purchased	590			(81		)	—			79			(111		)	—			—		534			(749		)	424			(58		)
Short-term borrowings	29			(31		)	—			323			(12		)	—			49		—			(76		)	344			(8		)
Long-term debt	7,621			109			49			2,701			(4,206		)	—			3,893		—			(2,561		)	7,290			(446		)
Other financial liabilities measured on a recurring basis	10			—			(5		)	5			(3		)	—			1		(3		)	(8		)	7			(4		)
-1	Changes in fair value for available-for-sale investments are recorded in Accumulated other comprehensive income (loss), unless other-than-temporarily impaired, while gains and losses from sales are recorded in Realized gains (losses) from sales of investments on the Consolidated Statement of Income.
-2	Unrealized gains (losses) on MSRs are recorded in Other revenue on the Consolidated Statement of Income.
-3	Represents the amount of total gains or losses for the period, included in earnings (and Accumulated other comprehensive income (loss) for changes in fair value of available-for-sale investments), attributable to the change in fair value relating to assets and liabilities classified as Level 3 that are still held at December 31, 2014.
-4	Total Level 3 derivative assets and liabilities have been netted in these tables for presentation purposes only.
				Net realized/unrealized						Transfers																				Unrealized
				gains (losses) incl. in																										gains
																														(losses)
In millions of dollars	Dec. 31, 2012			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2013			still held(3)
				transactions						Level 3			Level 3
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	5,043		$	(137	)	$	—		$	627		$	(1,871	)	$	59		$	—	$	71		$	(226	)	$	3,566		$	(124	)
Trading non-derivative assets
Trading mortgage-backed securities
U.S. government-sponsored agency guaranteed	1,325			141			—			1,386			(1,477		)	1,316			68		(1,310		)	(355		)	1,094			52
Residential	1,805			474			—			513			(372		)	3,630			—		(3,189		)	(7		)	2,854			10
Commercial	1,119			114			—			278			(304		)	244			—		(1,178		)	(17		)	256			14
Total trading mortgage-backed securities	$	4,249		$	729		$	—		$	2,177		$	(2,153	)	$	5,190		$	68	$	(5,677	)	$	(379	)	$	4,204		$	76
U.S. Treasury and federal agency securities	$	—		$	(1	)	$	—		$	54		$	—		$	—		$	—	$	(53	)	$	—		$	—		$	—
State and municipal	195			37			—			9			—			107			—		(126		)	—			222			15
Foreign government	311			(21		)	—			156			(67		)	326			—		(289		)	—			416			5
Corporate	2,030			(20		)	—			410			(410		)	2,864			—		(2,116		)	(923		)	1,835			(406		)
Equity securities	264			129			—			228			(210		)	829			—		(183		)	—			1,057			59
Asset-backed securities	4,453			544			—			181			(193		)	5,165			—		(5,579		)	(229		)	4,342			123
Other trading assets	2,321			202			—			960			(1,592		)	3,879			—		(2,253		)	(333		)	3,184			(7		)
Total trading non-derivative assets	$	13,823		$	1,599		$	—		$	4,175		$	(4,625	)	$	18,360		$	68	$	(16,276	)	$	(1,864	)	$	15,260		$	(135	)
Trading derivatives, net(4)
Interest rate contracts	$	181		$	292		$	—		$	692		$	(226	)	$	228		$	—	$	(155	)	$	(173	)	$	839		$	779
Foreign exchange contracts	—			625			—			29			(35		)	26			—		(10		)	60			695			146
Equity contracts	(1,448		)	96			—			25			295			298			—		(149		)	25			(858		)	(453		)
Commodity contracts	(771		)	(164		)	—			—			(527		)	15			—		(25		)	79			(1,393		)	(246		)
Credit derivatives	(342		)	(368		)	—			106			(183		)	20			—		—			493			(274		)	(544		)
Total trading derivatives, net(4)	$	(2,380	)	$	481		$	—		$	852		$	(676	)	$	587		$	—	$	(339	)	$	484		$	(991	)	$	(318	)
Investments
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	1,458		$	—		$	(7	)	$	2,058		$	(3,820	)	$	593		$	—	$	(38	)	$	(57	)	$	187		$	11
Residential	205			—			30			60			(265		)	212			—		(140		)	—			102			7
Commercial	—			—			—			4			(21		)	17			—		—			—			—			—
Total investment mortgage-backed securities	$	1,663		$	—		$	23		$	2,122		$	(4,106	)	$	822		$	—	$	(178	)	$	(57	)	$	289		$	18
U.S. Treasury and federal agency securities	$	12		$	—		$	—		$	—		$	—		$	—		$	—	$	(4	)	$	—		$	8		$	—
State and municipal	849			—			10			12			(122		)	1,236			—		(217		)	(125		)	1,643			(75		)
Foreign government	383			—			2			178			(256		)	506			—		(391		)	(78		)	344			(28		)
Corporate	385			—			(27		)	334			(119		)	104			—		(303		)	(89		)	285			—
Equity securities	773			—			56			19			(1		)	1			—		(33		)	—			815			47
Asset-backed securities	2,220			—			117			1,192			(1,684		)	1,475			—		(337		)	(1,023		)	1,960			—
Other debt securities	258			—			—			—			(205		)	50			—		(53		)	—			50			—
Non-marketable equity securities	5,364			—			249			—			—			653			—		(342		)	(1,577		)	4,347			241
Total investments	$	11,907		$	—		$	430		$	3,857		$	(6,493	)	$	4,847		$	—	$	(1,858	)	$	(2,949	)	$	9,741		$	203
				Net realized/unrealized						Transfers																				Unrealized
				gains (losses) incl. in																										gains
																														(losses)
In millions of dollars	Dec. 31, 2012			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2013			still held(3)
				transactions						Level 3			Level 3
Loans	$	4,931		$	—		$	(24	)	$	353		$	—		$	179		$	652	$	(192	)	$	(1,756	)	$	4,143		$	(122	)
Mortgage servicing rights	1,942			—			555			—			—			—			634		(2		)	(411		)	2,718			553
Other financial assets measured on a recurring basis	2,452			—			63			1			—			216			474		(2,046		)	(979		)	181			(5		)
Liabilities
Interest-bearing deposits	$	786		$	—		$	(125	)	$	32		$	(21	)	$	—		$	86	$	—		$	(118	)	$	890		$	(41	)
Federal funds purchased and securities loaned or sold under agreements to repurchase	841			91			—			216			(17		)	36			—		40			(123		)	902			50
Trading account liabilities
Securities sold, not yet purchased	365			42			—			89			(52		)	—			—		612			(382		)	590			73
Short-term borrowings	112			53			—			2			(10		)	—			316		—			(338		)	29			(5		)
Long-term debt	6,726			292			153			3,738			(2,531		)	—			1,466		(1		)	(1,332		)	7,621			758
Other financial liabilities measured on a recurring basis	24			—			(215		)	5			(2		)	(5		)	104		—			(331		)	10			(9		)
-1	Changes in fair value for available-for-sale investments are recorded in Accumulated other comprehensive income (loss), unless other-than-temporarily impaired, while gains and losses from sales are recorded in Realized gains (losses) from sales of investments on the Consolidated Statement of Income.
-2	Unrealized gains (losses) on MSRs are recorded in Other revenue on the Consolidated Statement of Income.
-3	Represents the amount of total gains or losses for the period, included in earnings (and Accumulated other comprehensive income (loss) for changes in fair value of available-for-sale investments), attributable to the change in fair value relating to assets and liabilities classified as Level 3 that are still held at December 31, 2013.
-4	Total Level 3 derivative assets and liabilities have been netted in these tables for presentation purposes only.
Level 3 Fair Value Rollforward
The following were the significant Level 3 transfers for the period December 31, 2013 to December 31, 2014:
•	Transfers of Long-term debt of $2.7 billion from Level 2 to Level 3, and of $4.2 billion from Level 3 to Level 2, mainly related to structured debt, reflecting changes in the significance of unobservable inputs as well as certain underlying market inputs becoming less or more observable.
•	Transfers of Other trading assets of $2.6 billion from Level 2 to Level 3, and of $2.3 billion from Level 3 to Level 2, related to trading loans, reflecting changes in the volume of market quotations.
The following were the significant Level 3 transfers from December 31, 2012 to December 31, 2013:
•	Transfers of Federal funds sold and securities borrowed or purchased under agreements to resell of $1.9 billion from Level 3 to Level 2 related to shortening of the remaining tenor of certain reverse repos. There is more transparency and observability for repo curves used in the valuation of structured reverse repos with tenors up to five years; thus, structured reverse repos maturing within five years are generally classified as Level 2.
•	Transfers of U.S. government-sponsored agency guaranteed mortgage-backed securities in Investments of $2.1 billion from Level 2 to Level 3, and of $3.8 billion from Level 3 to Level 2, due to changes in the level of price observability for the specific securities. Similarly, there were transfers of U.S. government-sponsored agency guaranteed mortgage-backed securities in Trading securities of $1.4 billion from Level 2 to Level 3, and of $1.5 billion from Level 3 to Level 2.
•	Transfers of asset-backed securities in Investments of $1.2 billion from Level 2 to Level 3, and of $1.7 billion from Level 3 to Level 2. These transfers were related to collateralized loan obligations, reflecting changes in the level of price observability.
•	Transfers of Long-term debt of $3.7 billion from Level 2 to Level 3, included $1.3 billion related to the transfer of a previously bifurcated hybrid debt instrument from Level 2 to Level 3 to reflect the host contract and the reclassification of Level 3 commodity contracts into Long-term debt. The remaining amounts of Long-term debt transferred from Level 2 to Level 3 as well as the $2.5 billion transfer from Level 3 to Level 2 were related mainly to structured debt reflecting changes in the significance of unobservable inputs as well as certain underlying market inputs becoming less or more observable.
Valuation Techniques and Inputs for Level 3 Fair Value Measurements
The Company’s Level 3 inventory consists of both cash securities and derivatives of varying complexities. The valuation methodologies applied to measure the fair value of these positions include discounted cash flow analyses, internal models and comparative analysis. A position is classified within Level 3 of the fair value hierarchy when at least one input is unobservable and is considered significant to its valuation. The specific reason an input is deemed unobservable varies. For example, at least one significant input to the pricing model is not observable in the market, at least one significant input has been adjusted to make it more representative of the position being valued, or the price quote available does not reflect sufficient trading activities.
The following tables present the valuation techniques covering the majority of Level 3 inventory and the most significant unobservable inputs used in Level 3 fair value measurements as of December 31, 2014 and December 31, 2013. Differences between this table and amounts presented in the Level 3 Fair Value Rollforward table represent individually immaterial items that have been measured using a variety of valuation techniques other than those listed.
Valuation Techniques and Inputs for Level 3 Fair Value Measurements
As of December 31, 2014	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
	(in millions)											Average(4)
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	3,156		Model-based	Interest rate	1.27		%	1.97		%	1.8		%
Mortgage-backed securities	$	2,874		Price-based	Price	$	—		$	127.87		$	81.43
	1,117			Yield analysis	Yield	0.01		%	19.91		%	5.89		%
State and municipal, foreign government, corporate and other debt securities	$	5,937		Price-based	Price	$	—		$	124		$	90.62
	1,860			Cash flow	Credit spread	25 bps			600 bps			233 bps
Equity securities(5)	$	2,163		Price-based	Price (5)	$	—		$	141		$	91
	679			Cash flow	Yield	4		%	5		%	4.5		%
					WAL	0.01 years			3.14 years			1.07 years
Asset-backed securities	$	3,607		Price-based	Price	$	—		$	105.5		$	67.01
Non-marketable equity	$	1,224		Price-based	Discount to price	—		%	90		%	4.04		%
	1,055			Comparables analysis	EBITDA multiples	2.9		x	13.1		x	9.77		x
					PE ratio	8.1		x	13.1		x	8.43		x
					Price-to-book ratio	0.99		x	1.56		x	1.15		x
					Fund NAV(5)	$	1		$	64,668,171		$	29,975,777
Derivatives—Gross(6)
Interest rate contracts (gross)	$	8,309		Model-based	Interest rate (IR) lognormal volatility	18.05		%	90.65		%	30.21		%
					Mean reversion	1		%	20		%	10.5		%
Foreign exchange contracts (gross)	$	1,428		Model-based	Foreign exchange (FX) volatility	0.37		%	58.4		%	8.57		%
	294			Cash flow	Interest rate	3.72		%	8.27		%	5.02		%
					IR-FX correlation	40		%	60		%	50		%
Equity contracts (gross)(7)	$	4,431		Model-based	Equity volatility	9.56		%	82.44		%	24.61		%
	502			Price-based	Equity forward	84.1		%	100.8		%	94.1		%
					Equity-FX correlation	(88.20		)%	48.7		%	(25.17		)%
					Equity-equity correlation	(66.30		)%	94.8		%	36.87		%
					Price	$	0.01		$	144.5		$	93.05
Commodity contracts (gross)	$	3,606		Model-based	Commodity volatility	5		%	83		%	24		%
					Commodity correlation	(57.00		)%	91		%	30		%
					Forward price	35.34		%	268.77		%	101.74		%
As of December 31, 2014	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
	(in millions)											Average(4)
Credit derivatives (gross)	$	4,944		Model-based	Recovery rate	13.97		%	75		%	37.62		%
	1,584			Price-based	Credit correlation	—		%	95		%	58.76		%
					Price	$	1		$	144.5		$	53.86
					Credit spread	1 bps			3,380 bps			180 bps
					Upfront points	0.39			100			52.26
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)(6)	$	74		Model-based	Redemption rate	13		%	99.5		%	68.73		%
	11			Price-based	Forward Price	107		%	107.1		%	107.05		%
					Fund NAV	$	12,974		$	10,087,963		$	9,308,012
Loans	$	1,095		Cash flow	Yield	1.6		%	4.5		%	2.23		%
	832			Model-based	Price	$	4.72		$	106.55		$	98.56
	740			Price-based	Credit spread	35 bps			500 bps			199 bps
	441			Yield analysis
Mortgage servicing rights	$	1,750		Cash flow	Yield	5.19		%	21.4		%	10.25		%
					WAL	3.31 years			7.89 years			5.17 years
Liabilities
Interest-bearing deposits	$	486		Model-based	Equity-IR correlation	34		%	37		%	35.43		%
					Commodity correlation	(57.00		)%	91		%	30		%
					Commodity volatility	5		%	83		%	24		%
					Forward price	35.34		%	268.77		%	101.74		%
Federal funds purchased and securities loaned or sold under agreements to repurchase	$	1,043		Model-based	Interest rate	0.74		%	2.26		%	1.9		%
Trading account liabilities
Securities sold, not yet purchased	$	251		Model-based	Credit-IR correlation	(70.49		)%	8.81		%	47.17		%
	$	142		Price-based	Price	$	—		$	117		$	70.33
Short-term borrowings and long-term debt	$	7,204		Model-based	IR lognormal volatility	18.05		%	90.65		%	30.21		%
					Mean reversion	1		%	20		%	10.5		%
					Equity volatility	10.18		%	69.65		%	23.72		%
					Credit correlation	87.5		%	87.5		%	87.5		%
					Equity forward	89.5		%	100.8		%	95.8		%
					Forward price	35.34		%	268.77		%	101.8		%
					Commodity correlation	(57.00		)%	91		%	30		%
					Commodity volatility	5		%	83		%	24		%
As of December 31, 2013	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
	(in millions)											Average(4)
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	3,299		Model-based	Interest rate	1.33		%	2.19		%	2.04		%
Mortgage-backed securities	$	2,869		Price-based	Price	$	0.1		$	117.78		77.6
	1,241			Yield analysis	Yield	0.03		%	21.8		%	8.66		%
State and municipal, foreign government, corporate and other debt securities	$	5,361		Price-based	Price	$	—		$	126.49		$	87.47
	2,014			Cash flow	Credit spread	11 bps			375 bps			213 bps
Equity securities(5)	$	947		Price-based	Price (5)	$	0.31		$	93.66		$	86.9
	827			Cash flow	Yield	4		%	5		%	4.5		%
					WAL	0.01 years			3.55 years			1.38 years
Asset-backed securities	$	4,539		Price-based	Price	$	—		$	135.83		$	70.89
	1,300			Model-based	Credit spread	25 bps			378 bps			302 bps
Non-marketable equity	$	2,324		Price-based	Fund NAV(5)	$	612		$336,559,340			$124,080,454
	1,470			Comparables analysis	EBITDA multiples	4.2		x	16.9		x	9.78		x
	533			Cash flow	Discount to price	—		%	75		%	3.47		%
					Price-to-book ratio	0.9		x	1.05		x	1.02		x
					PE ratio	9.1		x	9.1		x	9.1		x
Derivatives—Gross(6)
Interest rate contracts (gross)	$	5,721		Model-based	Interest rate (IR) lognormal volatility	10.6		%	87.2		%	21.16		%
Foreign exchange contracts (gross)	$	1,727		Model-based	Foreign exchange (FX) volatility	1		%	28		%	13.45		%
	189			Cash flow	Interest rate	0.11		%	13.88		%	6.02		%
					IR-FX correlation	40		%	60		%	50		%
					IR-IR correlation	40		%	68.79		%	40.52		%
					Credit spread	25 bps			419 bps			162 bps
Equity contracts (gross)(7)	$	3,189		Model-based	Equity volatility	10.02		%	73.48		%	29.87		%
	563			Price-based	Equity forward	79.1		%	141		%	100.24		%
					Equity-equity correlation	(81.30		)%	99.4		%	48.45		%
					Equity-FX correlation	(70.00		)%	55		%	0.6		%
					Price	$	—		$	118.75		$	88.1
Commodity contracts (gross)	$	2,988		Model-based	Commodity volatility	4		%	146		%	15		%
					Commodity correlation	(75.00		)%	90		%	32		%
					Forward price	23		%	242		%	105		%
Credit derivatives (gross)	$	4,767		Model-based	Recovery rate	20		%	64		%	38.11		%
	1,520			Price-based	Credit correlation	5		%	95		%	47.43		%
					Price	$	0.02		$	115.2		$	29.83
					Credit spread	3 bps			1,335 bps			203 bps
					Upfront points	2.31			100			57.69
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)(6)	$	82		Price-based	EBITDA multiples	5.2		x	12.6		x	12.08		x
	60			Comparables analysis	PE ratio	6.9		x	6.9		x	6.9		x
	38			Model-based	Price-to-book ratio	1.05		x	1.05		x	1.05		x
					Price	$	—		$	105.1		$	71.25
					Fund NAV	$	1		$	10,688,600		$	9,706,488
					Discount to price	—		%	35		%	16.36		%
As of December 31, 2013	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
	(in millions)											Average(4)
Loans	$	2,153		Price-based	Price	$	—		$	103.75		$	91.19
	1,422			Model-based	Yield	1.6		%	4.5		%	2.1		%
	549			Yield analysis	Credit spread	49 bps			1,600 bps			302 bps
Mortgage servicing rights	$	2,625		Cash flow	Yield	3.64		%	12		%	7.19		%
					WAL	2.27 years			9.44 years			6.12 years
Liabilities
Interest-bearing deposits	$	890		Model-based	Equity volatility	14.79		%	42.15		%	27.74		%
					Mean reversion	1		%	20		%	10.5		%
					Equity-IR correlation	9		%	20.5		%	19.81		%
					Forward price	23		%	242		%	105		%
					Commodity correlation	(75.00		)%	90		%	32		%
					Commodity volatility	4		%	146		%	15		%
Federal funds purchased and securities loaned or sold under agreements to repurchase	$	902		Model-based	Interest rate	0.47		%	3.66		%	2.71		%
Trading account liabilities
Securities sold, not yet purchased	$	289		Model-based	Credit spread	166 bps			180 bps			175 bps
	$	273		Price-based	Credit-IR correlation	(68.00		)%	5		%	(50.00		)%
					Price	$	—		$	124.25		$	99.75
Short-term borrowings and long-term debt	$	6,781		Model-based	IR lognormal volatility	10.6		%	87.2		%	20.97		%
	868			Price-based	Equity forward	79.1		%	141		%	99.51		%
					Equity volatility	10.7		%	57.2		%	19.41		%
					Equity-FX correlation	(70.00		)%	55		%	0.6		%
					Equity-equity correlation	(81.30		)%	99.4		%	48.3		%
					Interest rate	4		%	10		%	5		%
					Price	$	0.63		$	103.75		$	80.73
					Forward price	23		%	242		%	101		%
-1	The fair value amounts presented in this table represent the primary valuation technique or techniques for each class of assets or liabilities.
-2	Some inputs are shown as zero due to rounding.
-3	When the low and high inputs are the same, there is either a constant input applied to all positions, or the methodology involving the input applies to one large position only.
-4	Weighted averages are calculated based on the fair value of the instrument.
-5	For equity securities, the price and fund NAV inputs are expressed on an absolute basis, not as a percentage of the notional amount.
-6	Both trading and nontrading account derivatives—assets and liabilities—are presented on a gross absolute value basis.
-7	Includes hybrid products.
Sensitivity to Unobservable Inputs and Interrelationships between Unobservable Inputs
The impact of key unobservable inputs on the Level 3 fair value measurements may not be independent of one another. In addition, the amount and direction of the impact on a fair value measurement for a given change in an unobservable input depends on the nature of the instrument as well as whether the Company holds the instrument as an asset or a liability. For certain instruments, the pricing, hedging and risk management are sensitive to the correlation between various inputs rather than on the analysis and aggregation of the individual inputs.
The following section describes the sensitivities and interrelationships of the most significant unobservable inputs used by the Company in Level 3 fair value measurements.
Correlation
Correlation is a measure of the co-movement between two or more variables. A variety of correlation-related assumptions are required for a wide range of instruments, including equity and credit baskets, foreign-exchange options, CDOs backed by loans or bonds, mortgages, subprime mortgages and many other instruments. For almost all of these instruments, correlations are not observable in the market and must be estimated using historical information. Estimating correlation can be especially difficult where it may vary over time. Extracting correlation information from market data requires significant assumptions regarding the informational efficiency of the market (for example, swaption markets). Changes in correlation levels can have a major impact, favorable or unfavorable, on the value of an instrument, depending on its nature. A change in the default correlation of the fair value of the underlying bonds comprising a CDO structure would affect the fair value of the senior tranche. For example, an increase in the default correlation of the underlying bonds would reduce the fair value of the senior tranche, because highly correlated instruments produce larger losses in the event of default and a part of these losses would become attributable to the senior tranche. That same change in default correlation would have a different impact on junior tranches of the same structure.
Volatility
Volatility represents the speed and severity of market price changes and is a key factor in pricing options. Typically, instruments can become more expensive if volatility increases. For example, as an index becomes more volatile, the cost to Citi of maintaining a given level of exposure increases because more frequent rebalancing of the portfolio is required. Volatility generally depends on the tenor of the underlying instrument and the strike price or level defined in the contract. Volatilities for certain combinations of tenor and strike are not observable. The general relationship between changes in the value of a portfolio to changes in volatility also depends on changes in interest rates and the level of the underlying index. Generally, long option positions (assets) benefit from increases in volatility, whereas short option positions (liabilities) will suffer losses. Some instruments are more sensitive to changes in volatility than others. For example, an at-the-money option would experience a larger percentage change in its fair value than a deep-in-the-money option. In addition, the fair value of an option with more than one underlying security (for example, an option on a basket of bonds) depends on the volatility of the individual underlying securities as well as their correlations.
Yield
Adjusted yield is generally used to discount the projected future principal and interest cash flows on instruments, such as asset-backed securities. Adjusted yield is impacted by changes in the interest rate environment and relevant credit spreads.
In some circumstances, the yield of an instrument is not observable in the market and must be estimated from historical data or from yields of similar securities. This estimated yield may need to be adjusted to capture the characteristics of the security being valued. In other situations, the estimated yield may not represent sufficient market liquidity and must be adjusted as well. Whenever the amount of the adjustment is significant to the value of the security, the fair value measurement is classified as Level 3.
Prepayment
Voluntary unscheduled payments (prepayments) change the future cash flows for the investor and thereby change the fair value of the security. The effect of prepayments is more pronounced for residential mortgage-backed securities. An increase in prepayments—in speed or magnitude—generally creates losses for the holder of these securities. Prepayment is generally negatively correlated with delinquency and interest rate. A combination of low prepayment and high delinquencies amplify each input’s negative impact on mortgage securities’ valuation. As prepayment speeds change, the weighted average life of the security changes, which impacts the valuation either positively or negatively, depending upon the nature of the security and the direction of the change in the weighted average life.
Recovery
Recovery is the proportion of the total outstanding balance of a bond or loan that is expected to be collected in a liquidation scenario. For many credit securities (such as asset-backed securities), there is no directly observable market input for recovery, but indications of recovery levels are available from pricing services. The assumed recovery of a security may differ from its actual recovery that will be observable in the future. The recovery rate impacts the valuation of credit securities. Generally, an increase in the recovery rate assumption increases the fair value of the security. An increase in loss severity, the inverse of the recovery rate, reduces the amount of principal available for distribution and, as a result, decreases the fair value of the security.
Credit Spread
Credit spread is a component of the security representing its credit quality. Credit spread reflects the market perception of changes in prepayment, delinquency and recovery rates, therefore capturing the impact of other variables on the fair value. Changes in credit spread affect the fair value of
securities differently depending on the characteristics and maturity profile of the security. For example, credit spread is a more significant driver of the fair value measurement of a high yield bond as compared to an investment grade bond. Generally, the credit spread for an investment grade bond is also more observable and less volatile than its high yield counterpart.
Qualitative Discussion of the Ranges of Significant Unobservable Inputs
The following section describes the ranges of the most significant unobservable inputs used by the Company in Level 3 fair value measurements. The level of aggregation and the diversity of instruments held by the Company lead to a wide range of unobservable inputs that may not be evenly distributed across the Level 3 inventory.
Correlation
There are many different types of correlation inputs, including credit correlation, cross-asset correlation (such as equity-interest rate correlation), and same-asset correlation (such as interest rate-interest rate correlation). Correlation inputs are generally used to value hybrid and exotic instruments. Generally, same-asset correlation inputs have a narrower range than cross-asset correlation inputs. However, due to the complex and unique nature of these instruments, the ranges for correlation inputs can vary widely across portfolios.
Volatility
Similar to correlation, asset-specific volatility inputs vary widely by asset type. For example, ranges for foreign exchange volatility are generally lower and narrower than equity volatility. Equity volatilities are wider due to the nature of the equities market and the terms of certain exotic instruments. For most instruments, the interest rate volatility input is on the lower end of the range; however, for certain structured or exotic instruments (such as market-linked deposits or exotic interest rate derivatives), the range is much wider.
Yield
Ranges for the yield inputs vary significantly depending upon the type of security. For example, securities that typically have lower yields, such as municipal bonds, will fall on the lower end of the range, while more illiquid securities or securities with lower credit quality, such as certain residual tranche asset-backed securities, will have much higher yield inputs.
Credit Spread
Credit spread is relevant primarily for fixed income and credit instruments; however, the ranges for the credit spread input can vary across instruments. For example, certain fixed income instruments, such as certificates of deposit, typically have lower credit spreads, whereas certain derivative instruments with high-risk counterparties are typically subject to higher credit spreads when they are uncollateralized or have a longer tenor. Other instruments, such as credit default swaps, also have credit spreads that vary with the attributes of the underlying obligor. Stronger companies have tighter credit spreads, and weaker companies have wider credit spreads.
Price
The price input is a significant unobservable input for certain fixed income instruments. For these instruments, the price input is expressed as a percentage of the notional amount, with a price of $100 meaning that the instrument is valued at par. For most of these instruments, the price varies between zero to $100, or slightly above $100. Relatively illiquid assets that have experienced significant losses since issuance, such as certain asset-backed securities, are at the lower end of the range, whereas most investment grade corporate bonds will fall in the middle to the higher end of the range. For certain structured debt instruments with embedded derivatives, the price input may be above $100 to reflect the embedded features of the instrument (for example, a step-up coupon or a conversion option).
The price input is also a significant unobservable input for certain equity securities; however, the range of price inputs varies depending on the nature of the position, the number of shares outstanding and other factors.
Items Measured at Fair Value on a Nonrecurring Basis
Certain assets and liabilities are measured at fair value on a nonrecurring basis and therefore are not included in the tables above. These include assets measured at cost that have been written down to fair value during the periods as a result of an impairment. In addition, these assets include loans held-for-sale and other real estate owned that are measured at the lower of cost or market.
The following table presents the carrying amounts of all assets that were still held as of December 31, 2014 and December 31, 2013, for which a nonrecurring fair value measurement was recorded:
In millions of dollars	Fair value			Level 2			Level 3
31-Dec-14
Loans held-for-sale	$	4,152		$	1,084		$	3,068
Other real estate owned	102			21			81
Loans(1)	3,367			2,881			486
Total assets at fair value on a nonrecurring basis	$	7,621		$	3,986		$	3,635
-1	Represents impaired loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate secured loans.
In millions of dollars	Fair value			Level 2			Level 3
31-Dec-13
Loans held-for-sale	$	3,483		$	2,165		$	1,318
Other real estate owned	138			15			123
Loans(1)	4,713			3,947			766
Total assets at fair value on a nonrecurring basis	$	8,334		$	6,127		$	2,207
-1	Represents impaired loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate secured loans.
The fair value of loans-held-for-sale is determined where possible using quoted secondary-market prices. If no such quoted price exists, the fair value of a loan is determined using quoted prices for a similar asset or assets, adjusted for the specific attributes of that loan. Fair value for the other real estate owned is based on appraisals. For loans whose carrying amount is based on the fair value of the underlying collateral, the fair values depend on the type of collateral. Fair value of the collateral is typically estimated based on quoted market prices if available, appraisals or other internal valuation techniques.
Where the fair value of the related collateral is based on an unadjusted appraised value, the loan is generally classified as Level 2. Where significant adjustments are made to the appraised value, the loan is classified as Level 3. Additionally, for corporate loans, appraisals of the collateral are often based on sales of similar assets; however, because the prices of similar assets require significant adjustments to reflect the unique features of the underlying collateral, these fair value measurements are generally classified as Level 3.
Valuation Techniques and Inputs for Level 3 Nonrecurring Fair Value Measurements
The following tables present the valuation techniques covering the majority of Level 3 nonrecurring fair value measurements and the most significant unobservable inputs used in those measurements as of December 31, 2014 and December 31, 2013:
As of December 31, 2014	Fair Value(1)			Methodology	Input	Low			High			Weighted
	(in millions)											average(2)
Loans held-for-sale	$	2,740		Price-based	Price	$	92		$	100		$	99.54
					Credit Spread	5 bps			358 bps			175 bps
Other real estate owned	$	76		Price-based	Appraised Value	$	11,000		$	11,124,137		$	4,730,129
					Discount to price(4)	13		%	64		%	28.8		%
Loans(3)	$	437		Price-based	Discount to price(4)	13		%	34		%	28.92		%
-1	The fair value amounts presented in this table represent the primary valuation technique or techniques for each class of assets or liabilities.
-2	Weighted averages are calculated based on the fair value of the instrument.
-3	Represents loans held for investment whose carrying amounts are based on the fair value of the underlying collateral.
-4	Includes estimated costs to sell.
As of December 31, 2013	Fair Value(1)			Methodology	Input	Low			High			Weighted
	(in millions)											average(2)
Loans held-for-sale	$	912		Price-based	Price(3)	$	60		$	100		$	98.77
	393			Cash Flow	Credit Spread	45 bps			80 bps			64 bps
Other real estate owned	$	98		Price-based	Discount to price(4)	34		%	59		%	39		%
	17			Cash Flow	Price(3)	$	60.46		$	100		$	96.67
					Appraised Value	636,249			15,897,503			11,392,478
Loans(5)	$	581		Price-based	Discount to price(4)	34		%	39		%	35		%
	109			Model-based	Price(3)	$	52.4		$	68		$	65.32
					Appraised Value	6,500,000			86,000,000			43,532,719
-1	The fair value amounts presented in this table represent the primary valuation technique or techniques for each class of assets or liabilities.
-2	Weighted averages are based on the fair value of the instrument.
-3	Prices are based on appraised values.
-4	Includes estimated costs to sell.
-5	Represents loans held for investment whose carrying amounts are based on the fair value of the underlying collateral.
Nonrecurring Fair Value Changes
The following table presents total nonrecurring fair value measurements for the period, included in earnings, attributable to the change in fair value relating to assets that are still held at December 31, 2014 and December 31, 2013:
	Year ended December 31,
In millions of dollars	2014
Loans held-for-sale	$	34
Other real estate owned	(16		)
Loans(1)	(533		)
Total nonrecurring fair value gains (losses)	$	(515	)
-1	Represents loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate loans.
In millions of dollars	Year ended December 31, 2013
Loans held-for-sale	$	—
Other real estate owned	(6		)
Loans(1)	(761		)
Total nonrecurring fair value gains (losses)	$	(767	)
-1	Represents loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate loans.
Estimated Fair Value of Financial Instruments Not Carried at Fair Value
The table below presents the carrying value and fair value of Citigroup’s financial instruments that are not carried at fair value. The table below therefore excludes items measured at fair value on a recurring basis presented in the tables above.
The disclosure also excludes leases, affiliate investments, pension and benefit obligations and insurance policy claim reserves. In addition, contract-holder fund amounts exclude certain insurance contracts. Also, as required, the disclosure excludes the effect of taxes, any premium or discount that could result from offering for sale at one time the entire holdings of a particular instrument, excess fair value associated with deposits with no fixed maturity, and other expenses that would be incurred in a market transaction. In addition, the table excludes the values of non-financial assets and liabilities, as well as a wide range of franchise, relationship and intangible values, which are integral to a full assessment of Citigroup’s financial position and the value of its net assets.
The fair value represents management’s best estimates based on a range of methodologies and assumptions. The carrying value of short-term financial instruments not accounted for at fair value, as well as receivables and payables arising in the ordinary course of business, approximates fair value because of the relatively short period of time between their origination and expected realization. Quoted market prices are used when available for investments and for liabilities, such as long-term debt not carried at fair value. For loans not accounted for at fair value, cash flows are discounted at quoted secondary market rates or estimated market rates if available. Otherwise, sales of comparable loan portfolios or current market origination rates for loans with similar terms and risk characteristics are used. Expected credit losses are either embedded in the estimated future cash flows or incorporated as an adjustment to the discount rate used. The value of collateral is also considered. For liabilities such as long-term debt not accounted for at fair value and without quoted market prices, market borrowing rates of interest are used to discount contractual cash flows.
	31-Dec-14						Estimated fair value
	Carrying			Estimated
In billions of dollars	value			fair value			Level 1			Level 2			Level 3
Assets
Investments	$	30.5		$	32.2		$	4.5		$	25.2		$	2.5
Federal funds sold and securities borrowed or purchased under agreements to resell	98.4			98.4			—			89.7			8.7
Loans(1)(2)	620			617.6			—			5.6			612
Other financial assets(2)(3)	213.8			213.8			8.3			151.9			53.6
Liabilities
Deposits	$	897.6		$	894		$	—		$	746.2		$	147.8
Federal funds purchased and securities loaned or sold under agreements to repurchase	136.7			136.7			—			136.5			0.2
Long-term debt(4)	196.9			202.5			—			172.7			29.8
Other financial liabilities(5)	136.2			136.2			—			41.4			94.8
	31-Dec-13						Estimated fair value
	Carrying			Estimated
In billions of dollars	value			fair value			Level 1			Level 2			Level 3
Assets
Investments	$	17.8		$	19.3		$	5.3		$	11.9		$	2.1
Federal funds sold and securities borrowed or purchased under agreements to resell	115.6			115.6			—			107.2			8.4
Loans(1)(2)	637.9			635.1			—			5.6			629.5
Other financial assets(2)(3)	250.7			250.7			9.4			189.5			51.8
Liabilities
Deposits	$	966.6		$	965.6		$	—		$	776.4		$	189.2
Federal funds purchased and securities loaned or sold under agreements to repurchase	152			152			—			151.8			0.2
Long-term debt(4)	194.2			201.3			—			175.6			25.7
Other financial liabilities(5)	136.2			136.2			—			41.2			95
-1	The carrying value of loans is net of the Allowance for loan losses of $16.0 billion for December 31, 2014 and $19.6 billion for December 31, 2013. In addition, the carrying values exclude $0.0 billion and $2.9 billion of lease finance receivables at December 31, 2014 and December 31, 2013, respectively.
-2	Includes items measured at fair value on a nonrecurring basis.
-3	Includes cash and due from banks, deposits with banks, brokerage receivables, reinsurance recoverable and other financial instruments included in Other assets on the Consolidated Balance Sheet, for all of which the carrying value is a reasonable estimate of fair value.
-4	The carrying value includes long-term debt balances under qualifying fair value hedges.
-5	Includes brokerage payables, separate and variable accounts, short-term borrowings (carried at cost) and other financial instruments included in Other liabilities on the Consolidated Balance Sheet, for all of which the carrying value is a reasonable estimate of fair value.
Fair values vary from period to period based on changes in a wide range of factors, including interest rates, credit quality and market perceptions of value, and as existing assets and liabilities run off and new transactions are entered into. The estimated fair values of loans reflect changes in credit status since the loans were made, changes in interest rates in the case of fixed-rate loans, and premium values at origination of certain loans.
The estimated fair values of the Company’s corporate unfunded lending commitments at December 31, 2014 and December 31, 2013 were liabilities of $5.5 billion and $5.2 billion, respectively, substantially all of which are classified as Level 3. The Company does not estimate the fair values of consumer unfunded lending commitments, which are generally cancelable by providing notice to the borrower.

FAIR_VALUE_ELECTIONS

FAIR VALUE ELECTIONS	12 Months Ended
	Dec. 31, 2014
Fair Value, Option, Aggregate Differences [Abstract]
FAIR VALUE ELECTIONS	FAIR VALUE ELECTIONS
	The Company may elect to report most financial instruments and certain other items at fair value on an instrument-by-instrument basis with changes in fair value reported in earnings. The election is made upon the initial recognition of an eligible financial asset, financial liability or firm commitment or when certain specified reconsideration events occur. The fair value election may not be revoked once an election is made. The changes in fair value are recorded in current earnings. Additional discussion regarding the applicable areas in which fair value elections were made is presented in Note 25 to the Consolidated Financial Statements.
	All servicing rights are recognized initially at fair value. The Company has elected fair value accounting for its mortgage servicing rights. See Note 22 to the Consolidated Financial Statements for further discussions regarding the accounting and reporting of MSRs.
	The following table presents the changes in fair value gains and losses for the years ended December 31, 2014 and 2013 associated with those items for which the fair value option was elected:
		Changes in fair value gains (losses) for the
		Years ended December 31,
	In millions of dollars	2014			2013
	Assets
	Federal funds sold and securities borrowed or purchased under agreements to resell	$	812		$	(628	)
	Selected portfolios of securities purchased under agreements to resell and securities borrowed
	Trading account assets	190			(190		)
	Investments	30			(48		)
	Loans
	Certain corporate loans(1)	(135		)	72
	Certain consumer loans(1)	(41		)	(155		)
	Total loans	$	(176	)	$	(83	)
	Other assets
	MSRs	$	(344	)	$	553
	Certain mortgage loans held for sale(2)	474			951
	Total other assets	$	130		$	1,504
	Total assets	$	986		$	555
	Liabilities
	Interest-bearing deposits	$	(77	)	$	141
	Federal funds purchased and securities loaned or sold under agreements to repurchase	(5		)	110
	Selected portfolios of securities sold under agreements to repurchase and securities loaned
	Trading account liabilities	29			3
	Short-term borrowings	8			73
	Long-term debt	(307		)	(186		)
	Total liabilities	$	(352	)	$	141
	-1	Includes mortgage loans held by mortgage loan securitization VIEs consolidated upon the adoption of ASC 810 Consolidation (SFAS 167) on January 1, 2010.
	-2	Includes gains (losses) associated with interest rate lock-commitments for those loans that have been originated and elected under the fair value option.
	Own Debt Valuation Adjustments
	Own debt valuation adjustments are recognized on Citi’s liabilities for which the fair value option has been elected using Citi’s credit spreads observed in the bond market. The fair value of liabilities for which the fair value option is elected (other than non-recourse and similar liabilities) is impacted by the narrowing or widening of the Company’s credit spreads. The estimated change in the fair value of these liabilities due to such changes in the Company’s own credit risk (or instrument-specific credit risk) was a gain of $218 million and a loss of $412 million for the years ended December 31, 2014 and 2013, respectively. Changes in fair value resulting from changes in instrument-specific credit risk were estimated by incorporating the Company’s current credit spreads observable in the bond market into the relevant valuation technique used to value each liability as described above.
	The Fair Value Option for Financial Assets and Financial Liabilities
	Selected portfolios of securities purchased under agreements to resell, securities borrowed, securities sold under agreements to repurchase, securities loaned and certain non-collateralized short-term borrowings
	The Company elected the fair value option for certain portfolios of fixed-income securities purchased under agreements to resell and fixed-income securities sold under agreements to repurchase, securities borrowed, securities loaned, and certain non-collateralized short-term borrowings held primarily by broker-dealer entities in the United States, United Kingdom and Japan. In each case, the election was made because the related interest-rate risk is managed on a portfolio basis, primarily with derivative instruments that are accounted for at fair value through earnings.
	Changes in fair value for transactions in these portfolios are recorded in Principal transactions. The related interest revenue and interest expense are measured based on the contractual rates specified in the transactions and are reported as interest revenue and expense in the Consolidated Statement of Income.
	Certain loans and other credit products
	Citigroup has elected the fair value option for certain originated and purchased loans, including certain unfunded loan products, such as guarantees and letters of credit, executed by Citigroup’s lending and trading businesses. None of these credit products are highly leveraged financing commitments. Significant groups of transactions include loans and unfunded loan products that are expected to be either sold or securitized in the near term, or transactions where the economic risks are hedged with derivative instruments, such as purchased credit default swaps or total return swaps where the Company pays the total return on the underlying loans to a third party. Citigroup has elected the fair value option to mitigate accounting mismatches in cases where hedge accounting is complex and to achieve operational simplifications. Fair value was not elected for most lending transactions across the Company.
	The following table provides information about certain credit products carried at fair value at December 31, 2014 and 2013:
		31-Dec-14						31-Dec-13
	In millions of dollars	Trading assets			Loans			Trading assets		Loans
	Carrying amount reported on the Consolidated Balance Sheet	$	10,290		$	5,901		$	9,262	$	4,105
	Aggregate unpaid principal balance in excess of (less than) fair value	(26		)	125			4		(79		)
	Balance of non-accrual loans or loans more than 90 days past due	13			3			97		5
	Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	28			1			41		5
	In addition to the amounts reported above, $2,335 million and $2,308 million of unfunded loan commitments related to certain credit products selected for fair value accounting were outstanding as of December 31, 2014 and 2013, respectively.
	Changes in fair value of funded and unfunded credit products are classified in Principal transactions in the Company’s Consolidated Statement of Income. Related interest revenue is measured based on the contractual interest rates and reported as Interest revenue on Trading account assets or loan interest depending on the balance sheet classifications of the credit products. The changes in fair value for the years ended December 31, 2014 and 2013 due to instrument-specific credit risk totaled to a loss of $155 million and a gain of $4 million, respectively.
	Certain investments in unallocated precious metals
	Citigroup invests in unallocated precious metals accounts (gold, silver, platinum and palladium) as part of its commodity and foreign currency trading activities or to economically hedge certain exposures from issuing structured liabilities. Under ASC 815, the investment is bifurcated into a debt host contract and a commodity forward derivative instrument. Citigroup elects the fair value option for the debt host contract, and reports the debt host contract within Trading account assets on the Company’s Consolidated Balance Sheet. The total carrying amount of debt host contracts across unallocated precious metals accounts was approximately $1.2 billion and $1.3 billion at December 31, 2014 and 2013, respectively. The amounts are expected to fluctuate based on trading activity in future periods.
	As part of its commodity and foreign currency trading activities, Citi sells (buys) unallocated precious metals investments and executes forward purchase (sale) derivative contracts with trading counterparties. When Citi sells an unallocated precious metals investment, Citi’s receivable from its depository bank is repaid and Citi derecognizes its investment in the unallocated precious metal. The forward purchase (sale) contract with the trading counterparty indexed to unallocated precious metals is accounted for as a derivative, at fair value through earnings. As of December 31, 2014, there were approximately $7.2 billion and $6.7 billion notional amounts of such forward purchase and forward sale derivative contracts outstanding, respectively.
	Certain investments in private equity and real estate ventures and certain equity method and other investments
	Citigroup invests in private equity and real estate ventures for the purpose of earning investment returns and for capital appreciation. The Company has elected the fair value option for certain of these ventures, because such investments are considered similar to many private equity or hedge fund activities in Citi’s investment companies, which are reported at fair value. The fair value option brings consistency in the accounting and evaluation of these investments. All investments (debt and equity) in such private equity and real estate entities are accounted for at fair value. These investments are classified as Investments on Citigroup’s Consolidated Balance Sheet.
	Changes in the fair values of these investments are classified in Other revenue in the Company’s Consolidated Statement of Income.
	Citigroup also elects the fair value option for certain non-marketable equity securities whose risk is managed with derivative instruments that are accounted for at fair value through earnings. These securities are classified as Trading account assets on Citigroup’s Consolidated Balance Sheet. Changes in the fair value of these securities and the related derivative instruments are recorded in Principal transactions.
	Certain mortgage loans HFS
	Citigroup has elected the fair value option for certain purchased and originated prime fixed-rate and conforming adjustable-rate first mortgage loans HFS. These loans are intended for sale or securitization and are hedged with derivative instruments. The Company has elected the fair value option to mitigate accounting mismatches in cases where hedge accounting is complex and to achieve operational simplifications.
	The following table provides information about certain mortgage loans HFS carried at fair value at December 31, 2014 and 2013:
	In millions of dollars	December 31,			31-Dec-13
		2014
	Carrying amount reported on the Consolidated Balance Sheet	$	1,447		$	2,089
	Aggregate fair value in excess of unpaid principal balance	67			48
	Balance of non-accrual loans or loans more than 90 days past due	—			—
	Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	—			—
The changes in fair values of these mortgage loans are reported in Other revenue in the Company’s Consolidated Statement of Income. There was no net change in fair value during the years ended December 31, 2014 and 2013 due to instrument-specific credit risk. Related interest income continues to be measured based on the contractual interest rates and reported as Interest revenue in the Consolidated Statement of Income.
Certain consolidated VIEs
The Company has elected the fair value option for all qualified assets and liabilities of certain VIEs that were consolidated upon the adoption of SFAS 167 on January 1, 2010, including certain private label mortgage securitizations, mutual fund deferred sales commissions and collateralized loan obligation VIEs. The Company elected the fair value option for these VIEs, as the Company believes this method better reflects the economic risks, since substantially all of the Company’s retained interests in these entities are carried at fair value.
With respect to the consolidated mortgage VIEs, the Company determined the fair value for the mortgage loans and long-term debt utilizing internal valuation techniques. The fair value of the long-term debt measured using internal valuation techniques is verified, where possible, to prices obtained from independent vendors. Vendors compile prices from various sources and may apply matrix pricing for similar securities when no price is observable. Security pricing associated with long-term debt that is valued using observable inputs is classified as Level 2, and debt that is valued using one or more significant unobservable inputs is classified as Level 3. The fair value of mortgage loans in each VIE is derived from the security pricing. When substantially all of the long-term debt of a VIE is valued using Level 2 inputs, the corresponding mortgage loans are classified as Level 2. Otherwise, the mortgage loans of a VIE are classified as Level 3.
With respect to the consolidated mortgage VIEs for which the fair value option was elected, the mortgage loans are classified as Loans on Citigroup’s Consolidated Balance Sheet. The changes in fair value of the loans are reported as Other revenue in the Company’s Consolidated Statement of Income. Related interest revenue is measured based on the contractual interest rates and reported as Interest revenue in the Company’s Consolidated Statement of Income. Information about these mortgage loans is included in the table below. The change in fair value of these loans due to instrument-specific credit risk was a loss of $48 million and $156 million for the years ended December 31, 2014 and 2013, respectively.
The debt issued by these consolidated VIEs is classified as long-term debt on Citigroup’s Consolidated Balance Sheet. The changes in fair value for the majority of these liabilities are reported in Other revenue in the Company’s Consolidated Statement of Income. Related interest expense is measured based on the contractual interest rates and reported as Interest expense in the Consolidated Statement of Income. The aggregate unpaid principal balance of long-term debt of these consolidated VIEs exceeded the aggregate fair value by $9 million and $223 million as of December 31, 2014 and 2013, respectively.
The following table provides information about corporate and consumer loans of consolidated VIEs carried at fair value at December 31, 2014 and 2013:
	December 31, 2014						December 31, 2013
In millions of dollars	Corporate loans			Consumer loans			Corporate loans		Consumer loans
Carrying amount reported on the Consolidated Balance Sheet	$	—		$	—		$	14	$	910
Aggregate unpaid principal balance in excess of fair value	9			—			7		212
Balance of non-accrual loans or loans more than 90 days past due	—			—			—		81
Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	—			—			—		106
Certain structured liabilities
The Company has elected the fair value option for certain structured liabilities whose performance is linked to structured interest rates, inflation, currency, equity, referenced credit or commodity risks (structured liabilities). The Company elected the fair value option, because these exposures are considered to be trading-related positions and, therefore, are managed on a fair value basis. These positions will continue to be classified as debt, deposits or derivatives (Trading account liabilities) on the Company’s Consolidated Balance Sheet according to their legal form.
The following table provides information about the carrying value of structured notes, disaggregated by type of embedded derivative instrument at December 31, 2014 and 2013:
In billions of dollars	December 31, 2014			December 31, 2013
Interest rate linked	$	10.9		$	9.8
Foreign exchange linked	0.3			0.5
Equity linked	8			7
Commodity linked	1.4			1.8
Credit linked	2.5			3.5
Total	$	23.1		$	22.6
The change in fair value of these structured liabilities is reported in Principal transactions in the Company’s Consolidated Statement of Income. Changes in fair value of these structured liabilities include an economic component for accrued interest, which is included in the change in fair value reported in Principal transactions.
Certain non-structured liabilities
The Company has elected the fair value option for certain non-structured liabilities with fixed and floating interest rates (non-structured liabilities). The Company has elected the fair value option where the interest-rate risk of such liabilities is economically hedged with derivative contracts or the proceeds are used to purchase financial assets that will also be accounted for at fair value through earnings. The election has been made to mitigate accounting mismatches and to achieve operational simplifications. These positions are reported in Short-term borrowings and Long-term debt on the Company’s Consolidated Balance Sheet. The change in fair value of these non-structured liabilities is reported in Principal transactions in the Company’s Consolidated Statement of Income. Related interest expense on non-structured liabilities is measured based on the contractual interest rates and reported as Interest expense in the Consolidated Statement of Income.
The following table provides information about long-term debt carried at fair value, excluding debt issued by consolidated VIEs, at December 31, 2014 and 2013:
In millions of dollars	December 31, 2014			December 31, 2013
Carrying amount reported on the Consolidated Balance Sheet	$	26,180		$	25,968
Aggregate unpaid principal balance in excess of (less than) fair value	(151		)	(866		)
The following table provides information about short-term borrowings carried at fair value at December 31, 2014 and 2013:
In millions of dollars	December 31, 2014			December 31, 2013
Carrying amount reported on the Consolidated Balance Sheet	$	1,496		$	3,692
Aggregate unpaid principal balance in excess of (less than) fair value	31			(38		)

PLEDGED_ASSETS_COLLATERAL_GUAR

PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS	12 Months Ended
	Dec. 31, 2014
Pledged Assets, Collateral, Guarantees and Commitments [Abstract]
PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS	PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS
	Pledged Assets
	In connection with the Company’s financing and trading activities, the Company has pledged assets to collateralize its obligations under repurchase agreements, secured financing agreements, secured liabilities of consolidated VIEs and other borrowings. At December 31, 2014 and 2013, the approximate carrying values of the significant components of pledged assets recognized on the Company’s Consolidated Balance Sheet included:
	In millions of dollars	2014		2013
	Investment securities	$	173,015	$	183,071
	Loans	214,530		228,513
	Trading account assets	111,832		118,832
	Total	$	499,377	$	530,416
	In addition, included in Cash and due from banks at December 31, 2014 and 2013 were $6.2 billion and $8.8 billion, respectively, of cash segregated under federal and other brokerage regulations or deposited with clearing organizations.
	Collateral
	At December 31, 2014 and 2013, the approximate fair value of collateral received by the Company that may be resold or repledged, excluding the impact of allowable netting, was $346.7 billion and $308.3 billion, respectively. This collateral was received in connection with resale agreements, securities borrowings and loans, derivative transactions and margined broker loans.
	At December 31, 2014 and 2013, a substantial portion of the collateral received by the Company had been sold or repledged in connection with repurchase agreements, securities sold, not yet purchased, securities borrowings and loans, pledges to clearing organizations, segregation requirements under securities laws and regulations, derivative transactions and bank loans.
	In addition, at December 31, 2014 and 2013, the Company had pledged $376 billion and $397 billion, respectively, of collateral that may not be sold or repledged by the secured parties.
	Lease Commitments
	Rental expense (principally for offices and computer equipment) was $1.4 billion, $1.5 billion and $1.5 billion for the years ended December 31, 2014, 2013 and 2012 respectively.
	Future minimum annual rentals under noncancelable leases, net of sublease income, are as follows:
	In millions of dollars
	2015	$	1,415
	2016	1,192
	2017	964
	2018	771
	2019	679
	Thereafter	4,994
	Total	$	10,015
	Guarantees
	Citi provides a variety of guarantees and indemnifications to its customers to enhance their credit standing and enable them to complete a wide variety of business transactions. For
	certain contracts meeting the definition of a guarantee, the guarantor must recognize, at inception, a liability for the fair value of the obligation undertaken in issuing the guarantee.
	In addition, the guarantor must disclose the maximum potential amount of future payments that the guarantor could be required to make under the guarantee, if there were a total
	default by the guaranteed parties. The determination of the maximum potential future payments is based on the notional amount of the guarantees without consideration of possible recoveries under recourse provisions or from collateral held or pledged. As such, Citi believes such amounts bear no relationship to the anticipated losses, if any, on these guarantees.
	The following tables present information about Citi’s guarantees at December 31, 2014 and December 31, 2013:
		Maximum potential amount of future payments
	In billions of dollars at December 31, 2014 except carrying value in millions	Expire within		Expire after		Total amount		Carrying value
		1 year		1 year		outstanding		(in millions of dollars)
	Financial standby letters of credit	$	25.4	$	73	$	98.4	$	242
	Performance guarantees	7.1		4.8		11.9		29
	Derivative instruments considered to be guarantees	12.5		79.2		91.7		2,806
	Loans sold with recourse	—		0.2		0.2		15
	Securities lending indemnifications(1)	127.5		—		127.5		—
	Credit card merchant processing(1)	86		—		86		—
	Custody indemnifications and other	—		48.9		48.9		54
	Total	$	258.5	$	206.1	$	464.6	$	3,146
		Maximum potential amount of future payments
	In billions of dollars at December 31, 2013 except carrying value in millions	Expire within		Expire after		Total amount		Carrying value
		1 year		1 year		outstanding		(in millions of dollars)
	Financial standby letters of credit	$	28.8	$	71.4	$	100.2	$	429
	Performance guarantees	7.6		4.9		12.5		42
	Derivative instruments considered to be guarantees	6		61.6		67.6		797
	Loans sold with recourse	—		0.3		0.3		22
	Securities lending indemnifications(1)	79.2		—		79.2		—
	Credit card merchant processing(1)	85.9		—		85.9		—
	Custody indemnifications and other	—		36.3		36.3		53
	Total	$	207.5	$	174.5	$	382	$	1,343
	-1	The carrying values of securities lending indemnifications and credit card merchant processing were not material for either period presented, as the probability of potential liabilities arising from these guarantees is minimal.
	Financial standby letters of credit
	Citi issues standby letters of credit which substitute its own credit for that of the borrower. If a letter of credit is drawn down, the borrower is obligated to repay Citi. Standby letters of credit protect a third party from defaults on contractual obligations. Financial standby letters of credit include: (i) guarantees of payment of insurance premiums and reinsurance risks that support industrial revenue bond underwriting; (ii) settlement of payment obligations to clearing houses, including futures and over-the-counter derivatives clearing (see further discussion below); (iii) support options and purchases of securities in lieu of escrow deposit accounts; and (iv) letters of credit that backstop loans, credit facilities, promissory notes and trade acceptances.
	Performance guarantees
	Performance guarantees and letters of credit are issued to guarantee a customer’s tender bid on a construction or systems-installation project or to guarantee completion of such projects in accordance with contract terms. They are also issued to support a customer’s obligation to supply specified products, commodities, or maintenance or warranty services to a third party.
	Derivative instruments considered to be guarantees
	Derivatives are financial instruments whose cash flows are based on a notional amount and an underlying instrument, reference credit or index, where there is little or no initial investment, and whose terms require or permit net settlement. For a discussion of Citi’s derivatives activities, see Note 23 to the Consolidated Financial Statements.
	Derivative instruments considered to be guarantees include only those instruments that require Citi to make payments to the counterparty based on changes in an underlying instrument that is related to an asset, a liability or an equity security held by the guaranteed party. More specifically, derivative instruments considered to be guarantees include certain over-the-counter written put options where the counterparty is not a bank, hedge fund or broker-dealer (such counterparties are considered to be dealers in these markets and may, therefore, not hold the underlying instruments). Credit derivatives sold by Citi are excluded from the tables above as they are disclosed separately in Note 23 to the Consolidated Financial Statements. In instances where Citi’s maximum potential future payment is unlimited, the notional amount of the contract is disclosed.
	Loans sold with recourse
	Loans sold with recourse represent Citi’s obligations to reimburse the buyers for loan losses under certain circumstances. Recourse refers to the clause in a sales agreement under which a seller/lender will fully reimburse the buyer/investor for any losses resulting from the purchased loans. This may be accomplished by the seller taking back any loans that become delinquent.
	In addition to the amounts shown in the tables above, Citi has recorded a repurchase reserve for its potential repurchases or make-whole liability regarding residential mortgage representation and warranty claims related to its whole loan sales to the U.S. government-sponsored enterprises (GSEs) and, to a lesser extent, private investors. The repurchase reserve was approximately $224 million and $341 million at December 31, 2014 and December 31, 2013, respectively, and these amounts are included in Other liabilities on the Consolidated Balance Sheet.
	Securities lending indemnifications
Owners of securities frequently lend those securities for a fee to other parties who may sell them short or deliver them to another party to satisfy some other obligation. Banks may administer such securities lending programs for their clients. Securities lending indemnifications are issued by the bank to guarantee that a securities lending customer will be made whole in the event that the security borrower does not return the security subject to the lending agreement and collateral held is insufficient to cover the market value of the security.
Credit card merchant processing
Credit card merchant processing guarantees represent the Company’s indirect obligations in connection with: (i) providing transaction processing services to various merchants with respect to its private-label cards; and (ii) potential liability for bank card transaction processing services. The nature of the liability in either case arises as a result of a billing dispute between a merchant and a cardholder that is ultimately resolved in the cardholder’s favor. The merchant is liable to refund the amount to the cardholder. In general, if the credit card processing company is unable to collect this amount from the merchant, the credit card processing company bears the loss for the amount of the credit or refund paid to the cardholder.
With regard to (i) above, Citi has the primary contingent liability with respect to its portfolio of private-label merchants. The risk of loss is mitigated as the cash flows between Citi and the merchant are settled on a net basis and Citi has the right to offset any payments with cash flows otherwise due to the merchant. To further mitigate this risk, Citi may delay settlement, require a merchant to make an escrow deposit, include event triggers to provide Citi with more financial and operational control in the event of the financial deterioration of the merchant or require various credit enhancements (including letters of credit and bank guarantees). In the unlikely event that a private-label merchant is unable to deliver products, services or a refund to its private-label cardholders, Citi is contingently liable to credit or refund cardholders.
With regard to (ii) above, Citi has a potential liability for bank card transactions where Citi provides the transaction processing services as well as those where a third party provides the services and Citi acts as a secondary guarantor, should that processor fail to perform.
Citi’s maximum potential contingent liability related to both bank card and private-label merchant processing services is estimated to be the total volume of credit card transactions that meet the requirements to be valid charge-back transactions at any given time. At December 31, 2014 and December 31, 2013, this maximum potential exposure was estimated to be $86 billion for both periods.
However, Citi believes that the maximum exposure is not representative of the actual potential loss exposure based on its historical experience. This contingent liability is unlikely to arise, as most products and services are delivered when purchased and amounts are refunded when items are returned to merchants. Citi assesses the probability and amount of its contingent liability related to merchant processing based on the financial strength of the primary guarantor, the extent and nature of unresolved charge-backs and its historical loss experience. At December 31, 2014 and December 31, 2013, the losses incurred and the carrying amounts of Citi’s contingent obligations related to merchant processing activities were immaterial.
Custody indemnifications
Custody indemnifications are issued to guarantee that custody clients will be made whole in the event that a third-party subcustodian or depository institution fails to safeguard clients’ assets.
Other guarantees and indemnifications
Credit Card Protection Programs
Citi, through its credit card businesses, provides various cardholder protection programs on several of its card products, including programs that provide insurance coverage for rental cars, coverage for certain losses associated with purchased products, price protection for certain purchases and protection for lost luggage. These guarantees are not included in the table, since the total outstanding amount of the guarantees and Citi’s maximum exposure to loss cannot be quantified. The protection is limited to certain types of purchases and losses, and it is not possible to quantify the purchases that would qualify for these benefits at any given time. Citi assesses the probability and amount of its potential liability related to these programs based on the extent and nature of its historical loss experience. At December 31, 2014 and December 31, 2013, the actual and estimated losses incurred and the carrying value of Citi’s obligations related to these programs were immaterial.
Other Representation and Warranty Indemnifications
In the normal course of business, Citi provides standard representations and warranties to counterparties in contracts in connection with numerous transactions and also provides indemnifications, including indemnifications that protect the counterparties to the contracts in the event that additional taxes are owed due either to a change in the tax law or an adverse interpretation of the tax law. Counterparties to these transactions provide Citi with comparable indemnifications. While such representations, warranties and indemnifications are essential components of many contractual relationships, they do not represent the underlying business purpose for the transactions. The indemnification clauses are often standard contractual terms related to Citi’s own performance under the terms of a contract and are entered into in the normal course of business based on an assessment that the risk of loss is remote. Often these clauses are intended to ensure that terms of a contract are met at inception. No compensation is received for these standard representations and warranties, and it is not possible to determine their fair value because they rarely, if ever, result in a payment. In many cases, there are no stated or notional amounts included in the indemnification clauses, and the contingencies potentially triggering the obligation to indemnify have not occurred and are not expected to occur. As a result, these indemnifications are not included in the tables above.
Value-Transfer Networks
Citi is a member of, or shareholder in, hundreds of value-transfer networks (VTNs) (payment, clearing and settlement systems as well as exchanges) around the world. As a condition of membership, many of these VTNs require that members stand ready to pay a pro rata share of the losses incurred by the organization due to another member’s default on its obligations. Citi’s potential obligations may be limited to its membership interests in the VTNs, contributions to the VTN’s funds, or, in limited cases, the obligation may be unlimited. The maximum exposure cannot be estimated as this would require an assessment of future claims that have not yet occurred. Citi believes the risk of loss is remote given historical experience with the VTNs. Accordingly, Citi’s participation in VTNs is not reported in the guarantees tables above, and there are no amounts reflected on the Consolidated Balance Sheet as of December 31, 2014 or December 31, 2013 for potential obligations that could arise from Citi’s involvement with VTN associations.
Long-Term Care Insurance Indemnification
In the sale of an insurance subsidiary, the Company provided an indemnification to an insurance company for policyholder claims and other liabilities relating to a book of long-term care (LTC) business (for the entire term of the LTC policies) that is fully reinsured by another insurance company. The reinsurer has funded two trusts with securities whose fair value (approximately $6.2 billion at December 31, 2014, compared to $5.4 billion at December 31, 2013) is designed to cover the insurance company’s statutory liabilities for the LTC policies. The assets in these trusts are evaluated and adjusted periodically to ensure that the fair value of the assets continues to cover the estimated statutory liabilities related to the LTC policies, as those statutory liabilities change over time.
If the reinsurer fails to perform under the reinsurance agreement for any reason, including insolvency, and the assets in the two trusts are insufficient or unavailable to the ceding insurance company, then Citi must indemnify the ceding insurance company for any losses actually incurred in connection with the LTC policies. Since both events would have to occur before Citi would become responsible for any payment to the ceding insurance company pursuant to its indemnification obligation, and the likelihood of such events occurring is currently not probable, there is no liability reflected in the Consolidated Balance Sheet as of December 31, 2014 and December 31, 2013 related to this indemnification. Citi continues to closely monitor its potential exposure under this indemnification obligation.
Carrying Value—Guarantees and Indemnifications
At December 31, 2014 and December 31, 2013, the total carrying amounts of the liabilities related to the guarantees and indemnifications included in the tables above amounted to approximately $3.1 billion and $1.3 billion, respectively. The carrying value of financial and performance guarantees is included in Other liabilities. For loans sold with recourse, the carrying value of the liability is included in Other liabilities.
Futures and over-the-counter derivatives clearing
Citi provides clearing services for clients executing exchange-traded futures and over-the-counter (OTC) derivatives contracts with central counterparties (CCPs). Based on all relevant facts and circumstances, Citi has concluded that it acts as an agent for accounting purposes in its role as clearing member for these client transactions. As such, Citi does not reflect the underlying exchange-traded futures or OTC derivatives contracts in its Consolidated Financial Statements. See Note 23 for a discussion of Citi’s derivatives activities that are reflected in its Consolidated Financial Statements.
As a clearing member, Citi collects and remits cash and securities collateral (margin) between its clients and the respective CCP. There are two types of margin: initial margin and variation margin. Where Citi obtains benefits from or controls cash initial margin (e.g., retains an interest spread), cash initial margin collected from clients and remitted to the CCP is reflected within Brokerage Payables (payables to customers) and Brokerage Receivables (receivables from brokers, dealers and clearing organizations), respectively. However, for OTC derivatives contracts where Citi has contractually agreed with the client that (a) Citi will pass through to the client all interest paid by the CCP on cash initial margin; (b) Citi will not utilize its right as clearing member to transform cash margin into other assets; and (c) Citi does not guarantee and is not liable to the client for the performance of the CCP, cash initial margin collected from clients and remitted to the CCP is not reflected on Citi’s Consolidated Balance Sheet. The total amount of cash initial margin collected and remitted in this manner was approximately $3.2 billion and $1.4 billion as of December 31, 2014 and December 31, 2013, respectively.
Variation margin due from clients to the respective CCP, or from the CCP to clients, reflects changes in the value of the client’s derivative contracts for each trading day. As a clearing member, Citi is exposed to the risk of non-performance by clients (e.g., failure of a client to post variation margin to the CCP for negative changes in the value of the client’s derivative contracts). In the event of non-performance by a client, Citi would move to close out the client’s positions. The CCP would typically utilize initial margin posted by the client and held by the CCP, with any remaining shortfalls required to be paid by Citi as clearing member. Citi generally holds incremental cash or securities margin posted by the client, which would typically be expected to be sufficient to mitigate Citi’s credit risk in the event the client fails to perform.
As required by ASC 860-30-25-5, securities collateral posted by clients is not recognized on Citi’s Consolidated Balance Sheet.
Collateral
Cash collateral available to Citi to reimburse losses realized under these guarantees and indemnifications amounted to $63 billion and $52 billion at December 31, 2014 and December 31, 2013, respectively. Securities and other marketable assets held as collateral amounted to $70 billion and $39 billion at December 31, 2014 and December 31, 2013, respectively. The majority of collateral is held to reimburse losses realized under securities lending indemnifications. Additionally, letters of credit in favor of Citi held as collateral amounted to $4.0 billion and $5.3 billion at December 31, 2014 and December 31, 2013, respectively. Other property may also be available to Citi to cover losses under certain guarantees and indemnifications; however, the value of such property has not been determined.
Performance risk
Citi evaluates the performance risk of its guarantees based on the assigned referenced counterparty internal or external ratings. Where external ratings are used, investment-grade ratings are considered to be Baa/BBB and above, while anything below is considered non-investment grade. Citi’s internal ratings are in line with the related external rating system. On certain underlying referenced assets or entities, ratings are not available. Such referenced assets are included in the “not rated” category. The maximum potential amount of the future payments related to the outstanding guarantees is determined to be the notional amount of these contracts, which is the par amount of the assets guaranteed.
Presented in the tables below are the maximum potential amounts of future payments that are classified based upon internal and external credit ratings as of December 31, 2014 and December 31, 2013. As previously mentioned, the determination of the maximum potential future payments is based on the notional amount of the guarantees without consideration of possible recoveries under recourse provisions or from collateral held or pledged. As such, Citi believes such amounts bear no relationship to the anticipated losses, if any, on these guarantees.
	Maximum potential amount of future payments
In billions of dollars at December 31, 2014	Investment		Non-investment		Not		Total
	grade		grade		rated
Financial standby letters of credit	$	73	$	15.9	$	9.5	$	98.4
Performance guarantees	7.3		3.9		0.7		11.9
Derivative instruments deemed to be guarantees	—		—		91.7		91.7
Loans sold with recourse	—		—		0.2		0.2
Securities lending indemnifications	—		—		127.5		127.5
Credit card merchant processing	—		—		86		86
Custody indemnifications and other	48.8		0.1		—		48.9
Total	$	129.1	$	19.9	$	315.6	$	464.6
	Maximum potential amount of future payments
In billions of dollars at December 31, 2013	Investment		Non-investment		Not		Total
	grade		grade		rated
Financial standby letters of credit	$	76.2	$	14.8	$	9.2	$	100.2
Performance guarantees	7.4		3.6		1.5		12.5
Derivative instruments deemed to be guarantees	—		—		67.6		67.6
Loans sold with recourse	—		—		0.3		0.3
Securities lending indemnifications	—		—		79.2		79.2
Credit card merchant processing	—		—		85.9		85.9
Custody indemnifications and other	36.2		0.1		—		36.3
Total	$	119.8	$	18.5	$	243.7	$	382
Credit Commitments and Lines of Credit
The table below summarizes Citigroup’s credit commitments as of December 31, 2014 and December 31, 2013:
In millions of dollars	U.S.		Outside of		December 31,		December 31,
			U.S.		2014		2013
Commercial and similar letters of credit	$	1,369	$	5,265	$	6,634	$	7,341
One- to four-family residential mortgages	3,243		2,431		5,674		4,946
Revolving open-end loans secured by one- to four-family residential properties	13,535		2,563		16,098		16,781
Commercial real estate, construction and land development	8,045		1,197		9,242		8,003
Credit card lines	492,391		119,658		612,049		641,111
Commercial and other consumer loan commitments	154,923		88,757		243,680		225,447
Other commitments and contingencies	1,584		4,091		5,675		7,863
Total	$	675,090	$	223,962	$	899,052	$	911,492
The majority of unused commitments are contingent upon customers’ maintaining specific credit standards.
Commercial commitments generally have floating interest rates and fixed expiration dates and may require payment of fees. Such fees (net of certain direct costs) are deferred and, upon exercise of the commitment, amortized over the life of the loan or, if exercise is deemed remote, amortized over the commitment period.
Commercial and similar letters of credit
A commercial letter of credit is an instrument by which Citigroup substitutes its credit for that of a customer to enable the customer to finance the purchase of goods or to incur other commitments. Citigroup issues a letter on behalf of its client to a supplier and agrees to pay the supplier upon presentation of documentary evidence that the supplier has performed in accordance with the terms of the letter of credit. When a letter of credit is drawn, the customer is then required to reimburse Citigroup.
One- to four-family residential mortgages
A one- to four-family residential mortgage commitment is a written confirmation from Citigroup to a seller of a property that the bank will advance the specified sums enabling the buyer to complete the purchase.
Revolving open-end loans secured by one- to four-family
residential properties
Revolving open-end loans secured by one- to four-family residential properties are essentially home equity lines of credit. A home equity line of credit is a loan secured by a primary residence or second home to the extent of the excess of fair market value over the debt outstanding for the first mortgage.
Commercial real estate, construction and land development
Commercial real estate, construction and land development include unused portions of commitments to extend credit for the purpose of financing commercial and multifamily residential properties as well as land development projects.
Both secured-by-real-estate and unsecured commitments are included in this line, as well as undistributed loan proceeds, where there is an obligation to advance for construction progress payments. However, this line only includes those extensions of credit that, once funded, will be classified as Total loans, net on the Consolidated Balance Sheet.
Credit card lines
Citigroup provides credit to customers by issuing credit cards. The credit card lines are cancellable by providing notice to the cardholder or without such notice as permitted by local law.
Commercial and other consumer loan commitments
Commercial and other consumer loan commitments include overdraft and liquidity facilities, as well as commercial commitments to make or purchase loans, to purchase third-party receivables, to provide note issuance or revolving underwriting facilities and to invest in the form of equity. Amounts include $53 billion and $58 billion with an original maturity of less than one year at December 31, 2014 and December 31, 2013, respectively.
In addition, included in this line item are highly leveraged financing commitments, which are agreements that provide funding to a borrower with higher levels of debt (measured by the ratio of debt capital to equity capital of the borrower) than is generally considered normal for other companies. This type of financing is commonly employed in corporate acquisitions, management buy-outs and similar transactions.
Other commitments and contingencies
Other commitments and contingencies include committed or unsettled regular-way reverse repurchase agreements and all other transactions related to commitments and contingencies not reported on the lines above.

CONTINGENCIES

CONTINGENCIES	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	CONTINGENCIES
	Accounting and Disclosure Framework
	ASC 450 governs the disclosure and recognition of loss contingencies, including potential losses from litigation and regulatory matters. ASC 450 defines a “loss contingency” as “an existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an entity that will ultimately be resolved when one or more future events occur or fail to occur.” It imposes different requirements for the recognition and disclosure of loss contingencies based on the likelihood of occurrence of the contingent future event or events. It distinguishes among degrees of likelihood using the following three terms: “probable,” meaning that “the future event or events are likely to occur”; “remote,” meaning that “the chance of the future event or events occurring is slight”; and “reasonably possible,” meaning that “the chance of the future event or events occurring is more than remote but less than likely.” These three terms are used below as defined in ASC 450.
	Accruals. ASC 450 requires accrual for a loss contingency when it is “probable that one or more future events will occur confirming the fact of loss” and “the amount of the loss can be reasonably estimated.” In accordance with ASC 450, Citigroup establishes accruals for contingencies, including the litigation and regulatory matters disclosed herein, when Citigroup believes it is probable that a loss has been incurred and the amount of the loss can be reasonably estimated. When the reasonable estimate of the loss is within a range of amounts, the minimum amount of the range is accrued, unless some higher amount within the range is a better estimate than any other amount within the range. Once established, accruals are adjusted from time to time, as appropriate, in light of additional information. The amount of loss ultimately incurred in relation to those matters may be substantially higher or lower than the amounts accrued for those matters.
	Disclosure. ASC 450 requires disclosure of a loss contingency if “there is at least a reasonable possibility that a loss or an additional loss may have been incurred” and there is no accrual for the loss because the conditions described above are not met or an exposure to loss exists in excess of the amount accrued. In accordance with ASC 450, if Citigroup has not accrued for a matter because Citigroup believes that a loss is reasonably possible but not probable, or that a loss is probable but not reasonably estimable, and the matter thus does not meet the criteria for accrual, and the reasonably possible loss is material, it discloses the loss contingency. In addition, Citigroup discloses matters for which it has accrued if it believes a reasonably possible exposure to material loss exists in excess of the amount accrued. In accordance with ASC 450, Citigroup’s disclosure includes an estimate of the reasonably possible loss or range of loss for those matters as to which an estimate can be made. ASC 450 does not require disclosure of an estimate of the reasonably possible loss or range of loss where an estimate cannot be made. Neither accrual nor disclosure is required for losses that are deemed remote.
	Litigation and Regulatory Contingencies
	Overview. In addition to the matters described below, in the ordinary course of business, Citigroup, its affiliates and subsidiaries, and current and former officers, directors and employees (for purposes of this section, sometimes collectively referred to as Citigroup and Related Parties) routinely are named as defendants in, or as parties to, various legal actions and proceedings. Certain of these actions and proceedings assert claims or seek relief in connection with alleged violations of consumer protection, fair lending, securities, banking, antifraud, antitrust, anti-money laundering, employment and other statutory and common laws. Certain of these actual or threatened legal actions and proceedings include claims for substantial or indeterminate compensatory or punitive damages, or for injunctive relief, and in some instances seek recovery on a class-wide basis.
	In the ordinary course of business, Citigroup and Related Parties also are subject to governmental and regulatory examinations, information-gathering requests, investigations and proceedings (both formal and informal), certain of which may result in adverse judgments, settlements, fines, penalties, restitution, disgorgement, injunctions or other relief. In addition, certain affiliates and subsidiaries of Citigroup are banks, registered broker-dealers, futures commission merchants, investment advisers or other regulated entities and, in those capacities, are subject to regulation by various U.S., state and foreign securities, banking, commodity futures, consumer protection and other regulators. In connection with formal and informal inquiries by these regulators, Citigroup and such affiliates and subsidiaries receive numerous requests, subpoenas and orders seeking documents, testimony and other information in connection with various aspects of their regulated activities. From time to time Citigroup and Related Parties also receive grand jury subpoenas and other requests for information or assistance, formal or informal, from federal or state law enforcement agencies including, among others, various United States Attorneys’ Offices, the Asset Forfeiture and Money Laundering Section and other divisions of the Department of Justice, the Financial Crimes Enforcement Network of the United States Department of the Treasury, and the Federal Bureau of Investigation relating to Citigroup and its customers.
	Because of the global scope of Citigroup’s operations, and its presence in countries around the world, Citigroup and Related Parties are subject to litigation and governmental and regulatory examinations, information-gathering requests, investigations and proceedings (both formal and informal) in multiple jurisdictions with legal and regulatory regimes that may differ substantially, and present substantially different risks, from those Citigroup and Related Parties are subject to in the United States. In some instances Citigroup and Related Parties may be involved in proceedings involving the same subject matter in multiple jurisdictions, which may result in overlapping, cumulative or inconsistent outcomes.
	Citigroup seeks to resolve all litigation and regulatory matters in the manner management believes is in the best interests of Citigroup and its shareholders, and contests liability, allegations of wrongdoing and, where applicable, the
	amount of damages or scope of any penalties or other relief sought as appropriate in each pending matter.
	Inherent Uncertainty of the Matters Disclosed. Certain of the matters disclosed below involve claims for substantial or indeterminate damages. The claims asserted in these matters typically are broad, often spanning a multi-year period and sometimes a wide range of business activities, and the plaintiffs’ or claimants’ alleged damages frequently are not quantified or factually supported in the complaint or statement of claim. Other matters relate to regulatory investigations or proceedings, as to which there may be no objective basis for quantifying the range of potential fine, penalty, or other remedy. As a result, Citigroup is often unable to estimate the loss in such matters, even if it believes that a loss is probable or reasonably possible, until developments in the case or investigation have yielded additional information sufficient to support a quantitative assessment of the range of reasonably possible loss. Such developments may include, among other things, discovery from adverse parties or third parties, rulings by the court on key issues, analysis by retained experts, and engagement in settlement negotiations. Depending on a range of factors, such as the complexity of the facts, the novelty of the legal theories, the pace of discovery, the court’s scheduling order, the timing of court decisions, and the adverse party’s willingness to negotiate in good faith toward a resolution, it may be months or years after the filing of a case or commencement of an investigation before an estimate of the range of reasonably possible loss can be made.
	Matters as to Which an Estimate Can Be Made. For some of the matters disclosed below, Citigroup is currently able to estimate a reasonably possible loss or range of loss in excess of amounts accrued (if any). For some of the matters included within this estimation, an accrual has been made because a loss is believed to be both probable and reasonably estimable, but an exposure to loss exists in excess of the amount accrued. In these cases, the estimate reflects the reasonably possible range of loss in excess of the accrued amount. For other matters included within this estimation, no accrual has been made because a loss, although estimable, is believed to be reasonably possible, but not probable; in these cases the estimate reflects the reasonably possible loss or range of loss. As of December 31, 2014, Citigroup estimates that the reasonably possible unaccrued loss in future periods for these matters ranges up to approximately $4 billion in the aggregate.
	These estimates are based on currently available information. As available information changes, the matters for which Citigroup is able to estimate will change, and the estimates themselves will change. In addition, while many estimates presented in financial statements and other financial disclosures involve significant judgment and may be subject to significant uncertainty, estimates of the range of reasonably possible loss arising from litigation and regulatory proceedings are subject to particular uncertainties. For example, at the time of making an estimate, (i) Citigroup may have only preliminary, incomplete, or inaccurate information about the facts underlying the claim; (ii) its assumptions about the future rulings of the court or other tribunal on significant issues, or the behavior and incentives of adverse parties or regulators, may prove to be wrong; and (iii) the outcomes it is attempting to predict are often not amenable to the use of statistical or other quantitative analytical tools. In addition, from time to time an outcome may occur that Citigroup had not accounted for in its estimate because it had deemed such an outcome to be remote. For all these reasons, the amount of loss in excess of accruals ultimately incurred for the matters as to which an estimate has been made could be substantially higher or lower than the range of loss included in the estimate.
	Matters as to Which an Estimate Cannot Be Made. For other matters disclosed below, Citigroup is not currently able to estimate the reasonably possible loss or range of loss. Many of these matters remain in very preliminary stages (even in some cases where a substantial period of time has passed since the commencement of the matter), with few or no substantive legal decisions by the court or tribunal defining the scope of the claims, the class (if any), or the potentially available damages, and fact discovery is still in progress or has not yet begun. In many of these matters, Citigroup has not yet answered the complaint or statement of claim or asserted its defenses, nor has it engaged in any negotiations with the adverse party (whether a regulator or a private party). For all these reasons, Citigroup cannot at this time estimate the reasonably possible loss or range of loss, if any, for these matters.
	Opinion of Management as to Eventual Outcome. Subject to the foregoing, it is the opinion of Citigroup’s management, based on current knowledge and after taking into account its current legal accruals, that the eventual outcome of all matters described in this Note would not be likely to have a material adverse effect on the consolidated financial condition of Citigroup. Nonetheless, given the substantial or indeterminate amounts sought in certain of these matters, and the inherent unpredictability of such matters, an adverse outcome in certain of these matters could, from time to time, have a material adverse effect on Citigroup’s consolidated results of operations or cash flows in particular quarterly or annual periods.
	Commodities Financing Contracts
	Beginning in May 2014, Citigroup became aware of reports of potential fraud relating to the financing of physical metal stored at the Qingdao and Penglai ports in China. Citigroup has contracts with a counterparty in relation to Citigroup’s providing financing collateralized by physical metal stored at these ports, with the agreements providing that the counterparty would repurchase the inventory at a specified date in the future (typically three to six months). Pursuant to the agreements, the counterparty is responsible for providing clean title to the inventory, insuring it, and attesting that there are no third party encumbrances. The counterparty is a non-Chinese subsidiary of a large multinational corporation, and the counterparty’s obligations under the contracts are guaranteed by the parent company.
	On July 22, 2014, Citigroup commenced proceedings in the Commercial Court in London to enforce its rights against the counterparty under the relevant agreements in relation to approximately $285 million in financing. That counterparty and a Chinese warehouse provider previously brought actions in the English courts to establish the parties’ rights and obligations under these agreements. In early December 2014, the English court conducted a preliminary trial concerning, among other issues, the question of whether Citigroup appropriately accelerated its counterparty’s obligation to repay Citigroup under the applicable agreements given these facts and circumstances. The court has not yet issued a ruling following trial.
	The financings at issue are carried at fair value. As with any position carried at fair value, Citigroup adjusts the positions and records a gain or loss in the Consolidated Statements of Income in accordance with GAAP.
	Credit Crisis-Related Litigation and Other Matters
	Citigroup and Related Parties have been named as defendants in numerous legal actions and other proceedings asserting claims for damages and related relief for losses arising from the global financial credit crisis that began in 2007. Such matters include, among other types of proceedings, claims asserted by: (i) individual investors and purported classes of investors in securities issued by Citigroup alleging violations of the federal securities laws, foreign laws, state securities and fraud law, and the Employee Retirement Income Security Act (ERISA); and (ii) investors in securities and other investments underwritten, issued or marketed by Citigroup, including securities issued by other public companies, collateralized debt obligations (CDOs), mortgage-backed securities (MBS), auction rate securities (ARS), investment funds, and other structured or leveraged instruments, which have suffered losses as a result of the credit crisis.
	In addition to these matters, Citigroup continues to cooperate fully in response to subpoenas and requests for information from the Securities and Exchange Commission (SEC), FINRA, state attorneys general, the Department of Justice and subdivisions thereof, the Office of the Special Inspector General for the Troubled Asset Relief Program, bank regulators, and other government agencies and authorities, in connection with various formal and informal (and, in many instances, industry-wide) inquiries concerning Citigroup’s mortgage-related conduct and business activities, as well as other business activities affected by the credit crisis. These business activities include, but are not limited to, Citigroup’s sponsorship, packaging, issuance, marketing, trading, servicing and underwriting of CDOs and MBS, its origination, sale or other transfer, servicing, and foreclosure of residential mortgages, and its origination, servicing, and securitization of auto loans.
	Mortgage-Related Litigation and Other Matters
	Securities Actions: Citigroup and Related Parties have been named as defendants in a variety of putative class actions and individual actions arising out of Citigroup’s exposure to CDOs and other assets that declined in value during the financial crisis. Many of these matters have been dismissed or settled. These actions assert a wide range of claims, including claims under the federal securities laws, foreign securities laws, ERISA, and state law. Additional information concerning certain of these actions is publicly available in court filings under the docket numbers 10 Civ. 9646 (S.D.N.Y.) (Stein, J.), 11 Civ. 7672 (S.D.N.Y.) (Koeltl, J.), 12 Civ. 6653 (S.D.N.Y.) (Stein, J.), 13-4488, 13-4504, 14-2545, and 14-3014 (2d Cir.).
	Beginning in November 2007, certain Citigroup affiliates also have been named as defendants arising out of their activities as underwriters of securities in actions brought by investors in securities issued by public companies adversely affected by the credit crisis. Many of these matters have been dismissed or settled. As a general matter, issuers indemnify underwriters in connection with such claims, but in certain of these matters Citigroup affiliates are not being indemnified or may in the future cease to be indemnified because of the financial condition of the issuer.
	Regulatory Actions: On July 14, 2014, Citigroup reached a settlement of the Residential Mortgage-Backed Securities Working Group’s investigation. The settlement resolved actual and potential civil claims by the Department of Justice, several state attorneys general, and the Federal Deposit Insurance Corporation (FDIC) relating to MBS and CDOs issued, structured, or underwritten by Citigroup between 2003 and 2008. It included a $4.0 billion civil monetary payment to the Department of Justice, $500 million in payments to certain state attorneys general and the FDIC, and $2.5 billion in consumer relief (to be provided by the end of 2018). The consumer relief will be in the form of financing provided for the construction and preservation of affordable multifamily rental housing, principal reduction and forbearance for residential loans, as well as other direct consumer benefits from various relief programs.
	Mortgage-Backed Securities and CDO Investor Actions: Beginning in July 2010, Citigroup and Related Parties have been named as defendants in complaints filed by purchasers of MBS and CDOs sold or underwritten by Citigroup. The complaints generally assert that defendants made material misrepresentations and omissions about the credit quality of the assets underlying the securities or the manner in which those assets were selected, and typically assert claims under Section 11 of the Securities Act of 1933, state blue sky laws, and/or common-law misrepresentation-based causes of action.
	The majority of these matters have been resolved through settlement or otherwise. As of December 31, 2014, the aggregate original purchase amount of the purchases at issue in the pending litigations was approximately $4.9 billion, and the aggregate original purchase amount of the purchases covered by tolling agreements with investors threatening litigation was approximately $1.4 billion. Additional information concerning certain of these actions is publicly available in court filings under the docket numbers 08 Civ. 8781 (S.D.N.Y.) (Failla, J.), 654464/2013 (N.Y. Sup. Ct.) (Friedman, J.), 653990/2013 (N.Y. Sup. Ct.) (Ramos, J.), and CL 14-399 (Vir. Cir. Ct.) (Hughes, J.).
	Mortgage-Backed Security Repurchase Claims: Various parties to MBS securitizations and other interested parties have asserted that certain Citigroup affiliates breached representations and warranties made in connection with mortgage loans sold into securitization trusts (private-label securitizations). Typically, these claims are based on allegations that securitized mortgages were not underwritten in accordance with the applicable underwriting standards. Citigroup also has received numerous inquiries, demands for loan files, and requests to toll (extend) the applicable statutes of limitation for representation and warranty claims relating to its private-label securitizations. These inquiries, demands and requests have been made by trustees of securitization trusts and others.
	On April 7, 2014, Citigroup entered into an agreement with 18 institutional investors represented by Gibbs & Bruns LLP regarding the resolution of representation and warranty repurchase claims related to certain legacy securitizations. Pursuant to the agreement, Citigroup made a binding offer to the trustees of 68 Citigroup-sponsored mortgage securitization trusts to pay $1.125 billion to the trusts to resolve these claims, plus certain fees and expenses. The 68 trusts covered by the agreement represent all of the trusts established by Citigroup’s legacy Securities and Banking business during 2005-2008 for which Citigroup affiliates made representations and warranties to the trusts.
	On December 19, 2014, Citigroup, the 18 institutional investors, and the trustees for these securitizations executed a revised settlement agreement resolving a substantial majority of the claims contemplated by the April 7, 2014 offer of settlement. On December 31, 2014, the trustees amended the settlement agreement to accept the offer as to certain additional claims. As of December 31, 2014, the trustees have accepted the settlement for 64 trusts in whole, and the trustees have accepted in part and excluded in part four trusts from the settlement. Pursuant to the terms of the settlement agreement, the trustees’ acceptance is subject to a judicial approval proceeding, which was initiated by the trustees on December 21, 2014. Additional information concerning this action is publicly available in court filings under the docket number 653902/2014 (N.Y. Sup. Ct.) (Friedman, J.).
	To date, trustees have filed six actions against Citigroup seeking to enforce certain of these contractual repurchase claims in connection with four private-label securitizations. Each of the six actions is in the early stages of proceedings. In the aggregate, plaintiffs are asserting repurchase claims as to approximately 6,700 loans that were securitized into these four securitizations, as well as any other loans that are later found to have breached representations and warranties. Additional information concerning these actions is publicly available in court filings under the docket numbers 13 Civ. 2843 (S.D.N.Y.) (Daniels, J.), 13 Civ. 6989 (S.D.N.Y.) (Daniels, J.), 653816/2013 (N.Y. Sup. Ct.) (Kornreich, J.), and 653930/2014 (N.Y. Sup. Ct.).
	Mortgage-Backed Securities Trustee Actions. On June 18, 2014, a group of investors in 48 MBS trusts for which Citibank, N.A. served or currently serves as trustee filed a complaint in New York State Supreme Court in BLACKROCK ALLOCATION TARGET SHARES: SERIES S. PORTFOLIO, ET AL. v. CITIBANK, N.A. The complaint, like those filed against other MBS trustees, alleges that Citibank, N.A. failed to pursue contractual remedies against loan originators, securitization sponsors and servicers. This action was withdrawn without prejudice, effective December 17, 2014. Additional information concerning this action is publicly available in court filings under the docket number 651868/2014 (N.Y. Sup. Ct.) (Ramos, J.). On November 24, 2014, largely the same group of investors filed an action in the United States District Court for the Southern District of New York, captioned FIXED INCOME SHARES: SERIES M ET AL. V. CITIBANK, N.A., alleging similar claims relating to 27 MBS trusts sponsored by UBS, Lehman Brothers, American Home Mortgage, Goldman Sachs, Country Place, PHH Mortgage, Wachovia and Washington Mutual. Additional information concerning this action is publicly available in court filings under the docket number 14-cv-9373 (S.D.N.Y.) (Furman, J.).
	On June 27, 2014, a separate group of MBS investors filed a summons with notice in FEDERAL HOME LOAN BANK OF TOPEKA, ET AL. v. CITIBANK, N.A. The summons alleges that Citibank, N.A., as trustee for an unspecified number of MBS, failed to pursue remedies on behalf of the trusts. This action was withdrawn without prejudice on November 10, 2014. Additional information concerning this action is publicly available in court filings under the docket number 651973/2014 (N.Y. Sup. Ct.).
	Counterparty and Investor Actions
	In 2010, Abu Dhabi Investment Authority (ADIA) commenced an arbitration (ADIA I) against Citigroup and Related Parties before the International Center for Dispute Resolution (ICDR), alleging statutory and common law claims in connection with its $7.5 billion investment in Citigroup in December 2007. ADIA sought rescission of the investment agreement or, in the alternative, more than $4 billion in damages. Following a hearing in May 2011 and post-hearing proceedings, on October 14, 2011, the arbitration panel issued a final award and statement of reasons finding in favor of Citigroup on all claims asserted by ADIA. On March 4, 2013, the United States District Court for the Southern District of New York denied ADIA’s petition to vacate the arbitration award and granted Citigroup’s cross-petition to confirm. ADIA appealed and, on February 19, 2014, the United States Court of Appeals for the Second Circuit affirmed the judgment. ADIA filed a petition for review in the United States Supreme Court, which was denied on October 6, 2014. Additional information concerning this action is publicly available in court filings under the docket numbers 12 Civ. 283 (S.D.N.Y.) (Daniels, J.),13-1068-cv (2d Cir.), and 13-1500 (U.S.).
	On August 20, 2013, ADIA commenced a second arbitration (ADIA II) against Citigroup before the ICDR, alleging common law claims arising out of the same investment at issue in ADIA I. On August 28, 2013, Citigroup filed a complaint against ADIA in the United States District Court for the Southern District of New York seeking to enjoin ADIA II on the ground that it is barred by the court’s judgment confirming the arbitral award in ADIA I. On September 23, 2013, ADIA filed motions to dismiss Citigroup’s complaint and to compel arbitration. On November 25, 2013, the court denied Citigroup’s motion for a preliminary injunction and granted ADIA’s motions to dismiss and to compel arbitration. On December 23, 2013, Citigroup appealed that ruling to the United States Court of Appeals for the Second Circuit. On January 14, 2015, the Second Circuit affirmed the district court’s ruling. Additional information concerning this action is publicly available in court filings under the docket numbers 13 Civ. 6073 (S.D.N.Y.) (Castel, J.) and 13-4825 (2d Cir.).
	Alternative Investment Fund-Related Litigation and Other Matters
	Since mid-2008, the SEC has been investigating the management and marketing of the ASTA/MAT and Falcon funds, alternative investment funds managed and marketed by certain Citigroup affiliates that suffered substantial losses during the credit crisis. In addition to the SEC inquiry, on June 11, 2012, the New York Attorney General served a subpoena on a Citigroup affiliate seeking documents and information concerning certain of these funds, and, on August 1, 2012, the Massachusetts Attorney General served a Civil Investigative Demand on a Citigroup affiliate seeking similar documents and information. Citigroup is cooperating fully with these inquiries. Citigroup has entered into tolling agreements with the SEC and the New York Attorney General concerning certain claims related to the investigations.
	Citigroup and Related Parties have been named as defendants in a putative class action lawsuit filed in October 2012 on behalf of investors in CSO Ltd., CSO US Ltd., and Corporate Special Opportunities Ltd., whose investments were managed indirectly by a Citigroup affiliate. Plaintiffs assert a variety of state common law claims, alleging that they and other investors were misled into investing in the funds and, later, not redeeming their investments. The complaint seeks to recover more than $400 million on behalf of a putative class of investors. Additional information concerning this action is publicly available in court filings under the docket number 12-cv-7717 (S.D.N.Y.) (Castel, J.).
	Auction Rate Securities-Related Litigation and Other Matters
	Citigroup and Related Parties have been named as defendants in numerous actions and proceedings brought by Citigroup shareholders and purchasers or issuers of ARS and an issuer of variable rate demand obligations, asserting federal and state law claims arising from the collapse of the market in 2008, which plaintiffs contend Citigroup and other ARS underwriters and broker-dealers foresaw or should have foreseen, but failed adequately to disclose. Many of these matters have been dismissed or settled. Most of the remaining matters are in arbitrations pending before FINRA.
	Lehman Brothers Bankruptcy Proceedings
	Beginning in September 2010, Citigroup and Related Parties have been named as defendants in various adversary proceedings and claim objections in the Chapter 11 bankruptcy proceedings of Lehman Brothers Holdings Inc. (LBHI) and the liquidation proceedings of Lehman Brothers Inc. (LBI) and Lehman Brothers Finance AG, a/k/a Lehman Brothers Finance SA (LBF). Additional information concerning these actions is publicly available in court filings under the docket numbers 08-13555, 08-01420, and 09-10583 (Bankr. S.D.N.Y.) (Chapman, J.).
	On February 8, 2012, Citibank, N.A. and certain Citigroup affiliates were named as defendants in an adversary proceeding asserting objections to proofs of claim totaling approximately $2.6 billion filed by Citibank, N.A. and those affiliates, and claims under federal bankruptcy and state law to recover $2 billion deposited by LBHI with Citibank, N.A. against which Citibank, N.A. asserts a right of setoff. Plaintiffs also seek avoidance of a $500 million transfer and an amendment to a guarantee in favor of Citibank, N.A. and other relief. Plaintiffs filed amended complaints on November 16, 2012, January 29, 2014, and December 9, 2014, asserting additional claims and factual allegations, and amending certain previously asserted claims. Discovery is ongoing. Additional information concerning this action is publicly available in court filings under the docket numbers 12-01044 and 08-13555 (Bankr. S.D.N.Y.) (Chapman, J.).
	On July 21, 2014, an adversary proceeding was filed against Citibank, N.A., Citibank Korea Inc., and Citigroup Global Markets Ltd., asserting that defendants improperly have withheld termination payments under certain derivatives contracts. An amended complaint was filed on August 6, 2014, and defendants filed an answer on October 6, 2014. Plaintiffs seek to recover approximately $70 million, plus interest.  Discovery is ongoing. Additional information concerning this action is publicly available in court filings under the docket numbers 09-10583 and 14-02050 (Bankr. S.D.N.Y.) (Chapman, J.).
	Terra Firma Litigation
	In December 2009, the general partners of two related private equity funds filed a complaint in New York state court, subsequently removed to the United States District Court for the Southern District of New York, asserting multi-billion-dollar fraud and other common law claims against certain Citigroup affiliates arising out of the May 2007 auction of the music company EMI, in which Citigroup acted as advisor to EMI and as a lender to plaintiffs’ acquisition vehicle. Following a jury trial, a verdict was returned in favor of Citigroup on November 4, 2010. Plaintiffs appealed from the entry of the judgment. On May 31, 2013, the United States Court of Appeals for the Second Circuit vacated the November 2010 jury verdict in favor of Citigroup and ordered that the case be retried. On March 7, 2014, the parties stipulated to the dismissal of all remaining claims in the action, without prejudice to plaintiffs’ rights to re-file those claims in England. Additional information concerning this action is publicly available in court filings under the docket numbers 09 Civ. 10459 (S.D.N.Y.) (Rakoff, J.) and 11-0126-cv (2d Cir.).
	In August and September 2013, plaintiffs in the New York proceedings, together with their affiliates and principal, filed fraud and negligent misrepresentation claims arising out of the EMI auction in the High Court of Justice, Queen’s Bench Division, Manchester District Registry Mercantile Court in Manchester, England, against certain Citigroup affiliates. The cases have since been transferred to the High Court of Justice, Queen’s Bench Division, Commercial Court in London. On March 7, 2014, the parties to the separate proceedings brought by Terra Firma in 2013 before the High Court of Justice, Queen’s Bench Division, Commercial Court in London consented to the service by plaintiffs of an Amended Claim Form incorporating the claims that would have proceeded to trial in the United States District Court for the Southern District of New York in July 2014 had the New York action not been dismissed. The Amended Claim Form was served on March 10, 2014, and discovery is ongoing. A trial is scheduled to begin in 2016. Additional information concerning this action is publicly available in court filings under the claim number Terra Firma Investments (GP) 2 Ltd. & Ors v Citigroup Global Markets Ltd. & Ors (2014 Folio 267).
	Tribune Company Bankruptcy
	Certain Citigroup affiliates have been named as defendants in adversary proceedings related to the Chapter 11 cases of Tribune Company (Tribune) filed in the United States Bankruptcy Court for the District of Delaware, asserting claims arising out of the approximately $11 billion leveraged buyout of Tribune in 2007. On August 2, 2013, the Litigation Trustee, as successor plaintiff to the Official Committee of Unsecured Creditors, filed a fifth amended complaint in the adversary proceeding KIRSCHNER v. FITZSIMONS, ET AL. The complaint seeks to avoid and recover as actual fraudulent transfers the transfers of Tribune stock that occurred as a part of the leveraged buyout. Several Citigroup affiliates are named as “Shareholder Defendants” and are alleged to have tendered Tribune stock to Tribune as a part of the buyout.
	Several Citigroup affiliates are named as defendants in certain actions brought by Tribune noteholders, also seeking to recover the transfers of Tribune stock that occurred as a part of the leveraged buyout, as alleged state-law constructive fraudulent conveyances.  Finally, Citigroup Global Markets Inc. (CGMI) has been named in a separate action as a defendant in connection with its role as advisor to Tribune. A motion to dismiss the claim against the Shareholder Defendants in the FITZSIMONS action is pending.  The noteholders’ claims were previously dismissed, and an appeal to the Second Circuit is pending.  A motion to dismiss the action against CGMI in its role as advisor to Tribune is pending. Additional information concerning these actions is publicly available in court filings under the docket numbers 08-13141 (Bankr. D. Del.) (Carey, J.), 11 MD 02296 (S.D.N.Y.) (Sullivan, J.), 12 MC 2296 (S.D.N.Y.) (Sullivan, J.), and 13-3992 (2d Cir.).
	Credit Default Swaps Matters
	In April 2011, the European Commission (EC) opened an investigation (Case No COMP/39.745) into the credit default swap (CDS) industry. The scope of the investigation initially concerned the question of “whether 16 investment banks and Markit, the leading provider of financial information in the CDS market, have colluded and/or may hold and abuse a dominant position in order to control the financial information on CDS.” On July 2, 2013, the EC issued to Citigroup, CGMI, Citigroup Global Markets Ltd., Citicorp North America Inc., and Citibank, N.A., as well as Markit, ISDA, and 12 other investment bank dealer groups, a Statement of Objections alleging that Citigroup and the other dealers colluded to prevent exchanges from entering the credit derivatives business in breach of Article 101 of the Treaty on the Functioning of the European Union. The Statement of Objections sets forth the EC’s preliminary conclusions, does not prejudge the final outcome of the case, and does not benefit from the review and consideration of Citigroup’s arguments and defenses. Citigroup filed a Reply to the Statement of Objections on January 23, 2014, and made oral submissions to the EC on May 14, 2014.
	In July 2009 and September 2011, the Antitrust Division of the U.S. Department of Justice served Civil Investigative Demands (CIDs) on Citigroup concerning potential anticompetitive conduct in the CDS industry. Citigroup has responded to the CIDs and is cooperating with the investigation.
	In addition, putative class action complaints have been filed by various entities against Citigroup, CGMI and Citibank, N.A., among other defendants, alleging anticompetitive conduct in the CDS industry and asserting various claims under Sections 1 and 2 of the Sherman Act as well as a state law claim for unjust enrichment. On October 16, 2013, the U.S. Judicial Panel on Multidistrict Litigation centralized these putative class actions and ordered that those actions pending in the United States District Court for the Northern District of Illinois be transferred to the United States District Court for the Southern District of New York for coordinated or consolidated pretrial proceedings before Judge Denise Cote.
	On September 4, 2014, the United States District Court for the Southern District of New York granted in part and denied in part defendants’ motion to dismiss the second consolidated amended complaint, dismissing plaintiffs’ claim for violation of Section 2 of the Sherman Act and certain claims for damages, but permitting the case to proceed as to plaintiffs’ claims for violation of Section 1 of the Sherman Act and unjust enrichment. Additional information relating to this action is publicly available in court filings under the docket number 13 MD 2476 (S.D.N.Y.) (Cote, J.).
	Foreign Exchange Matters
	Regulatory Actions: Government and regulatory agencies in the U.S., including the Antitrust Division and the Criminal Division of the Department of Justice, as well as agencies in other jurisdictions, including the U.K. Serious Fraud Office, the Swiss Competition Commission, and the Australian Competition and Consumer Commission, are conducting investigations or making inquiries regarding Citigroup’s foreign exchange business. Citigroup is fully cooperating with these and related investigations and inquiries.
	On November 12, 2014, the Commodity Futures Trading Commission (CFTC), the U.K. Financial Conduct Authority (FCA), and the Office of the U.S. Comptroller of the Currency (OCC) announced settlements with Citibank, N.A. resolving their foreign exchange investigations. Citibank, N.A. was among five banks settling the CFTC’s and the FCA’s investigations and among three banks settling the OCC’s investigation. As part of the settlements, Citibank, N.A. agreed to pay penalties of approximately $358 million to the FCA, $350 million to the OCC, and $310 million to the CFTC and to enhance further the control framework governing its foreign exchange business.
	Antitrust and Other Litigation: Numerous foreign exchange dealers, including Citigroup and Citibank, N.A., are named as defendants in putative class actions that are proceeding on a consolidated basis in the United States District Court for the Southern District of New York under the caption IN RE FOREIGN EXCHANGE BENCHMARK RATES ANTITRUST LITIGATION. The plaintiffs in these actions allege that the defendants colluded to manipulate the WM/Reuters rate (WMR), thereby causing the putative classes to suffer losses in connection with WMR-based financial instruments. The plaintiffs assert federal and state antitrust claims and claims for unjust enrichment, and seek compensatory damages, treble damages where authorized by statute, restitution, and declaratory and injunctive relief. On March 31, 2014, plaintiffs in the putative class actions filed a consolidated amended complaint.
	Citibank, N.A., Citigroup, and Citibank Korea Inc., as well as numerous other foreign exchange dealers, were named as defendants in a putative class action captioned SIMMTECH CO. v. BARCLAYS BANK PLC, ET AL. (SIMMTECH) that was proceeding before the same court. The plaintiff sought to represent a putative class of persons who traded foreign currency with the defendants in Korea, alleging that the class suffered losses as a result of the defendants’ alleged WMR manipulation. The plaintiff asserted federal and state antitrust claims, and sought compensatory damages, treble damages, and declaratory and injunctive relief.
	Additionally, Citibank, N.A. and Citigroup, as well as numerous other foreign exchange dealers, were named as defendants in a putative class action captioned LARSEN v. BARCLAYS BANK PLC, ET AL. (LARSEN), that was proceeding before the same court. Plaintiff sought to represent a putative class of persons or entities in Norway who traded foreign currency with defendants, alleging that the class suffered losses as a result of defendants’ alleged WMR manipulation. Plaintiff asserted federal antitrust and unjust enrichment claims, and sought compensatory damages, treble damages where authorized by statute, and declaratory and injunctive relief.
Citigroup and Citibank, N.A., along with other defendants, moved to dismiss all of these actions. On January 28, 2015, the court issued an opinion and order denying the motion as to the IN RE FOREIGN EXCHANGE BENCHMARK RATES ANTITRUST LITIGATION plaintiffs, but dismissing the claims of the SIMMTECH and LARSEN plaintiffs in their entirety on the grounds that their federal claims were barred by the Foreign Trade Antitrust Improvements Act and their state claims had an insufficient nexus to New York. Additional information concerning these actions is publicly available in court filings under the docket numbers 13 Civ. 7789, 13 Civ. 7953, and 14 Civ. 1364 (S.D.N.Y.) (Schofield, J.).
Additionally, Citigroup and Citibank, N.A., as well as numerous other foreign exchange dealers, are named as defendants in a putative class action captioned TAYLOR v. BANK OF AMERICA CORPORATION, ET AL.  The plaintiffs seek to represent a putative class of investors that transacted in exchange-traded foreign exchange futures contracts and/or options on foreign exchange futures contracts on certain exchanges, alleging that the putative class was harmed as a result of the defendants’ manipulation of the foreign exchange market.  The plaintiffs assert violations of the Commodity Exchange Act and federal antitrust claims.  Additional information concerning this action is publicly available in court filings under the docket number 1:15-cv-1350 (S.D.N.Y.) (Schofield, J.).
Interbank Offered Rates-Related Litigation and Other Matters
Regulatory Actions: Government agencies in the U.S., including the Department of Justice, the CFTC, and a consortium of state attorneys general, as well as agencies in other jurisdictions, including the Swiss Competition Commission, are conducting investigations or making inquiries regarding submissions made by panel banks to bodies that publish various interbank offered rates and other benchmark rates. As members of a number of such panels, Citigroup subsidiaries have received requests for information and documents. Citigroup is cooperating with the investigations and inquiries and is responding to the requests.
Antitrust and Other Litigation: Citigroup and Citibank, N.A., along with other U.S. Dollar (USD) LIBOR panel banks, are defendants in a multi-district litigation (MDL) proceeding before the United States District Court for the Southern District of New York captioned IN RE LIBOR-BASED FINANCIAL INSTRUMENTS ANTITRUST LITIGATION (the LIBOR MDL). Following motion practice, consolidated amended complaints were filed on behalf of two separate putative classes of plaintiffs: (i) OTC purchasers of derivative instruments tied to USD LIBOR; and, (ii) purchasers of exchange-traded derivative instruments tied to USD LIBOR. Each of these putative classes alleges that the panel bank defendants conspired to suppress USD LIBOR: (i) OTC purchasers assert claims under the Sherman Act and for unjust enrichment and breach of the implied covenant of good faith and fair dealing; and, (ii) purchasers of exchange-traded derivative instruments assert claims under the Commodity Exchange Act and the Sherman Act and for unjust enrichment. Individual actions commenced by various Charles Schwab entities also were consolidated into the MDL proceeding. The plaintiffs seek compensatory damages and restitution for losses caused by the alleged violations, as well as treble damages under the Sherman Act. The Schwab and OTC plaintiffs also seek injunctive relief.
Additional actions have been consolidated in the MDL proceeding, including (i) lawsuits filed by, or on behalf of putative classes of, community and other banks, savings and loans institutions, credit unions, municipalities and purchasers and holders of LIBOR-linked financial products; and, (ii) lawsuits filed by putative classes of lenders and adjustable rate mortgage borrowers. The plaintiffs allege that defendant panel banks artificially suppressed USD LIBOR in violation of applicable law and seek compensatory and other damages.
Additional information relating to these actions is publicly available in court filings under the following docket numbers: 12 Civ. 4205; 12 Civ. 5723; 12 Civ. 5822; 12 Civ. 6056;  12 Civ. 6693; 12 Civ. 7461; 13 Civ. 346; 13 Civ. 407; 13 Civ. 1016, 13 Civ. 1456, 13 Civ. 1700, 13 Civ. 2262, 13 Civ. 2297; 13 Civ. 4018; 13 Civ. 7720; 14 Civ. 146 (Buchwald, J.); 12 Civ. 6294 (E.D.N.Y.) (Seybert, J.); 12 Civ. 6571 (N.D. Cal.) (Conti, J.); 12 Civ. 10903 (C.D. Cal.) (Snyder, J.); 13 Civ. 48 (S.D. Cal.) (Sammartino, J.); 13 Civ. 62 (C.D. Cal.) (Phillips, J.); 13 Civ. 106 (N.D. Cal.) (Beller, J.); 13 Civ. 108 (N.D. Cal.) (Ryu, J.); 13 Civ. 109 (N.D. Cal.) (Laporte, J.); 13 Civ. 122 (C.D. Cal.) (Bernal, J.); 13 Civ. 334, 13 Civ. 335 (S.D. Iowa) (Pratt, J); 13 Civ. 342 (E.D. Va.) (Brinkema, J.); 13 Civ. 1466 (S.D. Cal.) (Lorenz, J.); 13 Civ. 1476 (E.D. Cal.)  (Mueller, J.); 13 Civ. 2149 (S.D. Tex.) (Hoyt, J.); 13 Civ. 2244 (N.D. Cal.) (Hamilton, J.); 13 Civ. 2921 (N.D. Cal.) (Chesney, J.); 13 Civ. 2979 (N.D. Cal.) (Tigar, J.); 13 Civ. 4352 (E.D. Pa.) (Restrepo, J.); and 13 Civ. 5278 (N.D. Cal.) (Vadas, J.)
On June 30, 2014, the United States Supreme Court granted a petition for a writ of certiorari in GELBOIM, ET AL. v. BANK OF AMERICA CORP., ET AL. with respect to the dismissal by the United States Court of Appeals for the Second Circuit of an appeal by the plaintiff class of indirect OTC purchasers of U.S. debt securities. On January 21, 2015, the Supreme Court ruled that, contrary to the Second Circuit’s opinion, the plaintiffs had a right to appeal, and remanded the case to the Second Circuit for consideration of the plaintiffs’ appeal on the merits. Additional information concerning this appeal is publicly available in court filings under the docket numbers 13-3565 (2d Cir.), 13-3636 (2d Cir.), and 13-1174 (U.S.).
Citigroup and Citibank, N.A., along with other USD LIBOR panel banks, also are named as defendants in an individual action filed in the United States District Court for the Southern District of New York on February 13, 2013, captioned 7 WEST 57th STREET REALTY CO. v. CITIGROUP, INC., ET AL. The plaintiff alleges that the defendant panel banks manipulated USD LIBOR to keep it artificially high and that this manipulation affected the value of plaintiffs’ OTC municipal bond portfolio in violation of federal and state antitrust laws and federal RICO law. The plaintiff seeks compensatory damages, treble damages where authorized by statute, and declaratory relief. Additional information concerning this action is publicly available in court filings under the docket number 13 Civ. 981 (Gardephe, J.).
Separately, on April 30, 2012, an action was filed in the United States District Court for the Southern District of New York captioned LAYDON v. MIZUHO BANK LTD. ET AL. against defendant banks that are or were members of the panels making submissions used in the calculation of Japanese yen LIBOR and TIBOR, and certain affiliates of those banks, including Citigroup, Citibank, N.A., Citibank Japan Ltd. and Citigroup Global Markets Japan Inc. The plaintiff asserts claims under federal antitrust law and the Commodity Exchange Act, as well as a claim for unjust enrichment, and seeks unspecified compensatory and punitive damages, including treble damages under certain statutes, as well as costs and expenses. Additional information concerning this action is publicly available in court filings under the docket number 12 Civ. 3419 (S.D.N.Y.) (Daniels, J.).
On May 2, 2014, plaintiffs in the class action SULLIVAN v. BARCLAYS PLC, ET AL pending in the United States District Court for the Southern District of New York filed a second amended complaint naming Citigroup and Citibank, N.A. as defendants. Plaintiffs claim to have suffered losses as a result of purported EURIBOR manipulation and assert claims under the Commodity Exchange Act, the Sherman Act and the federal RICO law, and for unjust enrichment. On September 11, 2014, the court granted the Department of Justice’s motion to stay discovery for eight months, until May 12, 2015. Additional information concerning this action is publicly available in court filings under the docket number 13 Civ. 2811 (S.D.N.Y.) (Castel, J.).
Interchange Fees Litigation
Beginning in 2005, several putative class actions were filed against Citigroup and Related Parties, together with Visa, MasterCard and other banks and their affiliates, in various federal district courts and consolidated with other related cases in a multi-district litigation proceeding before Judge Gleeson in the United States District Court for the Eastern District of New York (Interchange MDL). This proceeding is captioned IN RE PAYMENT CARD INTERCHANGE FEE AND MERCHANT DISCOUNT ANTITRUST LITIGATION.
The plaintiffs, merchants that accept Visa- and MasterCard-branded payment cards as well as membership associations that claim to represent certain groups of merchants, allege, among other things, that defendants have engaged in conspiracies to set the price of interchange and merchant discount fees on credit and debit card transactions and to restrain trade through various Visa and MasterCard rules governing merchant conduct, all in violation of Section 1 of the Sherman Act and certain California statutes. Supplemental complaints also have been filed against defendants in the putative class actions alleging that Visa’s and MasterCard’s respective initial public offerings were anticompetitive and violated Section 7 of the Clayton Act, and that MasterCard’s initial public offering constituted a fraudulent conveyance.
On January 14, 2014, the court entered a final judgment approving the terms of a class settlement providing for, among other things, a total payment to the class of $6.05 billion; a rebate to merchants participating in the damages class settlement of 10 basis points on interchange collected for a period of eight months by the Visa and MasterCard networks; and changes to certain network rules. A number of objectors have noticed an appeal from the final class settlement approval order with the United States Court of Appeals for the Second Circuit. Additional information concerning these consolidated actions is publicly available in court filings under the docket number MDL 05-1720 (E.D.N.Y.) (Brodie, J.) and 12-4671 (2d Cir.).
Numerous merchants, including large national merchants, have requested exclusion from the class settlements, and some of those opting out have filed complaints against Visa, MasterCard, and in some instances one or more issuing banks.  Two of these suits, 7-ELEVEN, INC., ET AL. v. VISA INC., ET AL., and SPEEDY STOP FOOD STORES, LLC, ET AL. v. VISA INC., ET AL., name Citigroup as a defendant.  On December 5, 2014, the Interchange MDL, including the opt out cases, was transferred from Judge Gleeson to Judge Brodie. Additional information concerning these actions is publicly available in court filings under the docket numbers 05-md-1720 (E.D.N.Y.) (Brodie, J.); 13-cv-4442 (S.D.N.Y.) (Hellerstein, J.), and 13-10-75377A (Tex. Dist. Ct.).
ISDAFIX-Related Litigation and Other Matters
Regulatory Actions: Government agencies in the U.S., including the Department of Justice and the CFTC, are conducting investigations or making inquiries concerning submissions for the global benchmark for fixed interest rate swaps (ISDAFIX) and trading in products that reference ISDAFIX. Citigroup is fully cooperating with these and related investigations and inquiries.
Antitrust and Other Litigation. Beginning in September 2014, various plaintiffs filed putative class action complaints in the United States District Court for the Southern District of New York against Citigroup and other U.S. dollar (USD) ISDAFIX panel banks, which are proceeding on a consolidated basis. On February 12, 2015, plaintiffs filed an amended complaint alleging that the defendants colluded to manipulate ISDAFIX, thereby causing the putative class to suffer losses in connection with USD interest rate derivatives purchased from the defendants. Plaintiffs assert federal and various common law claims and seek compensatory damages, treble damages where authorized by statute, restitution and declaratory and injunctive relief. Additional information concerning these actions is publicly available in court filings under the consolidated lead docket number 14 Civ. 7126 (S.D.N.Y.) (Furman, J.).
Money Laundering Inquiries
Citigroup and Related Parties, including Citigroup’s indirect, wholly-owned subsidiary Banamex USA (BUSA), a California state-chartered bank, have received grand jury subpoenas issued by the United States Attorney’s Office for the District of Massachusetts concerning, among other issues, policies, procedures and activities related to compliance with Bank Secrecy Act (BSA) and anti-money laundering (AML) requirements under applicable federal laws and banking regulations. Banamex USA also has received a subpoena from the FDIC related to its BSA and AML compliance program. Citigroup and BUSA also have received inquiries and requests for information from other regulators, including the Financial Crimes Enforcement Network and the California Department of Business Oversight, concerning BSA- and AML-related issues. Citigroup is cooperating fully with these inquiries.
Oceanografia Fraud and Related Matters
On February 28, 2014, Citigroup announced that it was adjusting downward its earnings for the fourth quarter of 2013 and full year 2013 by $235 million after tax ($360 million pretax) as a result of a fraud discovered in a Petróleos Mexicanos (Pemex) supplier program involving Oceanografía SA de CV (OSA), a Mexican oil services company and a key supplier to Pemex. During the first quarter of 2014, Citigroup incurred approximately $165 million of incremental credit costs related to the Pemex supplier program. The vast majority of the credit costs were associated with Citigroup’s $33 million of direct exposure to OSA as of December 31, 2013 and uncertainty about Pemex’s obligation to pay Citigroup for a portion of the accounts receivable Citigroup validated with Pemex as of year-end 2013 (approximately $113 million). The remaining incremental credit costs were associated with an additional supplier to Pemex within the Pemex supplier program that was found to have similar issues.
In the United States, the SEC has commenced a formal investigation and the Department of Justice has requested information regarding Banamex’s dealings with OSA. Citigroup continues to cooperate fully with these inquiries.
In Mexico, the Mexican National Banking and Securities Commission (CNBV) conducted an in situ extraordinary review of the facts and circumstances of the fraud. As a result of its review, the CNBV issued a corrective action order that must be implemented by Banamex and imposed a fine of approximately $2.2 million. The CNBV continues to review Banamex’s compliance with the corrective action order. In addition, the CNBV has initiated a formal process to impose additional fines on Banamex with respect to the manner in which OSA’s debt was recorded by Banamex. Citigroup continues to cooperate fully with all of the inquiries related to the OSA fraud.
Derivative Actions and Related Proceedings: Beginning in April 2014, Citigroup has been named as a defendant in two complaints filed by its stockholders seeking to inspect Citigroup’s books and records pursuant to Section 220 of Chapter 8 of the Delaware Corporations Law with regard to various matters, including the OSA fraud. On September 30, 2014, in the action brought by Oklahoma Firefighters Pension & Retirement System, the Master of the Court of Chancery issued a final report recommending that the court enter an order granting in part and denying in part plaintiff’s request for inspection. On October 7, 2014, Citigroup filed a notice of exception to the final report. Additional information concerning these actions is publicly available in court filings under the docket numbers C.A. No. 9587-ML (Del. Ch.) (LeGrow, M.) and C.A. No. 10468-ML (Del. Ch.) (LeGrow, M).
Parmalat Litigation and Related Matters
On July 29, 2004, Dr. Enrico Bondi, the Extraordinary Commissioner appointed under Italian law to oversee the administration of various Parmalat companies, filed a complaint in New Jersey state court against Citigroup and Related Parties alleging, among other things, that the defendants “facilitated” a number of frauds by Parmalat insiders. On October 20, 2008, following trial, a jury rendered a verdict in Citigroup’s favor on Parmalat’s claims and in favor of Citibank, N.A. on three counterclaims. Parmalat has exhausted all appeals, and the judgment is now final. Additional information concerning this action is publicly available in court filings under the docket number A-2654-08T2 (N.J. Sup. Ct.). Following the jury verdict awarding $431 million in damages on Citigroup’s counterclaim, Citigroup has taken steps to enforce that judgment in the Italian Courts. On August 29, 2014, the Court of Appeal of Bologna affirmed the decision in the full amount of $431 million, to be paid in Parmalat shares. The judgment is subject to appeal by Parmalat.
Prosecutors in Parma and Milan, Italy, have commenced criminal proceedings against certain current and former Citigroup employees (along with numerous other investment banks and certain of their current and former employees, as well as former Parmalat officers and accountants). In the event of an adverse judgment against the individuals in question, the authorities could seek administrative remedies against Citigroup. On April 18, 2011, the Milan criminal court acquitted the sole Citigroup defendant of market-rigging charges. The Milan prosecutors have appealed part of that judgment and seek administrative remedies against Citigroup, which may include disgorgement of 70 million Euro and a fine of 900,000 Euro. On April 4, 2013, the Italian Supreme Court granted the appeal of the Milan Public Prosecutors and referred the matter to the Milan Court of Appeal for further proceedings concerning the administrative liability, if any, of Citigroup. Additionally, the Parmalat administrator filed a purported civil complaint against Citigroup in the context of the Parma criminal proceedings, which seeks 14 billion Euro in damages. The trial in the Parma criminal proceedings is ongoing. Judgment is expected during the summer of 2015. In January 2011, certain Parmalat institutional investors filed a civil complaint seeking damages of approximately 130 million Euro against Citigroup and other financial institutions.
Regulatory Review of Consumer “Add-On” Products
Certain of Citi’s consumer businesses, including its Citi-branded and retail services cards businesses, offer or have in the past offered or participated in the marketing, distribution, or servicing of products, such as payment protection and identity monitoring, that are ancillary to the provision of credit to the consumer (add-on products). These add-on products have been the subject of enforcement actions against other institutions by regulators, including the Consumer Financial Protection Bureau (CFPB), the OCC, and the FDIC, that have resulted in orders to pay restitution to customers and penalties in substantial amounts. Citi has made restitution to certain customers in connection with certain add-on products. In light of the current regulatory focus on add-on products and the actions regulators have taken in relation to other credit card issuers, one or more regulators may order that Citi pay additional restitution to customers and/or impose penalties or other relief arising from Citi’s marketing, distribution, or servicing of add-on products.
Allied Irish Bank Litigation
In 2003, Allied Irish Bank (AIB) filed a complaint in the United States District Court for the Southern District of New York seeking to hold Citibank, N.A. and Bank of America, N.A., former prime brokers for AIB’s subsidiary Allfirst Bank (Allfirst), liable for losses incurred by Allfirst as a result of fraudulent and fictitious foreign currency trades entered into by one of Allfirst’s traders. AIB seeks compensatory damages of approximately $500 million, plus punitive damages, from Citibank, N.A. and Bank of America, N.A. collectively. In 2006, the court granted in part and denied in part defendants’ motion to dismiss. In 2009, AIB filed an amended complaint. In 2012, the parties completed discovery and the court granted Citibank, N.A.’s motion to strike AIB’s demand for a jury trial. Citibank, N.A. also filed a motion for summary judgment, which is pending. AIB has announced a settlement with Bank of America, N.A. for an undisclosed amount, leaving Citibank, N.A. as the sole remaining defendant. Additional information concerning this matter is publicly available in court filings under docket number 03 Civ. 3748 (S.D.N.Y.) (Batts, J.).
Settlement Payments
Payments required in settlement agreements described above have been made or are covered by existing litigation accruals.

SELECTED_QUARATERLY_FINANCIAL_

SELECTED QUARATERLY FINANCIAL DATA (UNAUDITED) SELECTED QUARATERLY FINANCIAL DATA (UNAUDITED)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
SELECTED QUARATERLY FINANCIAL DATA (UNAUDITED)	SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
		2014											2013
	In millions of dollars, except per share amounts	Fourth			Third			Second			First		Fourth		Third		Second		First
	Revenues, net of interest expense	$	17,812		$	19,604		$	19,342		$	20,124	$	17,779	$	17,904	$	20,488	$	20,248
	Operating expenses	14,426			12,955			15,521			12,149		12,293		11,679		12,149		12,288
	Provisions for credit losses and for benefits and claims	2,013			1,750			1,730			1,974		2,072		1,959		2,024		2,459
	Income from continuing operations before income taxes	$	1,373		$	4,899		$	2,091		$	6,001	$	3,414	$	4,266	$	6,315	$	5,501
	Income taxes (benefits)	991			1,985			1,838			2,050		1,090		1,080		2,127		1,570
	Income from continuing operations	$	382		$	2,914		$	253		$	3,951	$	2,324	$	3,186	$	4,188	$	3,931
	Income (loss) from discontinued operations, net of taxes	(1		)	(16		)	(22		)	37		181		92		30		(33		)
	Net income before attribution of noncontrolling interests	$	381		$	2,898		$	231		$	3,988	$	2,505	$	3,278	$	4,218	$	3,898
	Noncontrolling interests	31			59			50			45		50		51		36		90
	Citigroup’s net income	$	350		$	2,839		$	181		$	3,943	$	2,455	$	3,227	$	4,182	$	3,808
	Earnings per share (1)
	Basic
	Income from continuing operations	$	0.06		$	0.89		$	0.03		$	1.22	$	0.71	$	0.98	$	1.34	$	1.24
	Net income	0.06			0.88			0.03			1.24		0.77		1.01		1.35		1.23
	Diluted
	Income from continuing operations	0.06			0.88			0.03			1.22		0.71		0.98		1.33		1.24
	Net income	0.06			0.88			0.03			1.23		0.77		1		1.34		1.23
	Common stock price per share
	High	$	56.37		$	53.66		$	49.58		$	55.2	$	53.29	$	53	$	53.27	$	47.6
	Low	49.68			46.9			45.68			46.34		47.67		47.67		42.5		41.15
	Close	54.11			51.82			47.1			47.6		52.11		48.51		47.97		44.24
	Dividends per share of common stock	0.01			0.01			0.01			0.01		0.01		0.01		0.01		0.01
	This Note to the Consolidated Financial Statements is unaudited due to the Company’s individual quarterly results not being subject to an audit.
	(1)   Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.

SUMMARY_OF_SIGNIFICANT_ACCOUNT1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation
	The Consolidated Financial Statements include the accounts of Citigroup and its subsidiaries prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP). The Company consolidates subsidiaries in which it holds, directly or indirectly, more than 50% of the voting rights or where it exercises control. Entities where the Company holds 20% to 50% of the voting rights and/or has the ability to exercise significant influence, other than investments of designated venture capital subsidiaries or investments accounted for at fair value under the fair value option, are accounted for under the equity method, and the pro rata share of their income (loss) is included in Other revenue. Income from investments in less than 20% owned companies is recognized when dividends are received. As discussed in more detail in Note 22 to the Consolidated Financial Statements, Citigroup also consolidates entities deemed to be variable interest entities when Citigroup is determined to be the primary beneficiary. Gains and losses on the disposition of branches, subsidiaries, affiliates, buildings, and other investments are included in Other revenue.
	Citibank, N.A.
	Citibank, N.A. is a commercial bank and wholly owned subsidiary of Citigroup Inc. Citibank’s principal offerings include: consumer finance, mortgage lending and retail banking products and services; investment banking, commercial banking, cash management and trade finance; and private banking products and services.
Variable Interest Entities	Variable Interest Entities
	An entity is referred to as a variable interest entity (VIE) if it meets the criteria outlined in Accounting Standards Codification (ASC) Topic 810, Consolidation, which are: (i) the entity has equity that is insufficient to permit the entity to finance its activities without additional subordinated financial support from other parties; or (ii) the entity has equity investors that cannot make significant decisions about the entity’s operations or that do not absorb their proportionate share of the entity’s expected losses or expected returns.
	The Company consolidates a VIE when it has both the power to direct the activities that most significantly impact the VIE’s economic performance and a right to receive benefits or the obligation to absorb losses of the entity that could be potentially significant to the VIE (that is, Citi is the primary beneficiary).
	In addition to variable interests held in consolidated VIEs, the Company has variable interests in other VIEs that are not consolidated because the Company is not the primary beneficiary. These include multi-seller finance companies, certain collateralized debt obligations (CDOs), many structured finance transactions and various investment funds. However, these VIEs and all other unconsolidated VIEs are monitored by the Company to assess whether any events have occurred to cause its primary beneficiary status to change. These events include:
	•	purchases or sales of variable interests by Citigroup or an unrelated third party, which cause Citigroup’s overall variable interest ownership to change;
	•	changes in contractual arrangements that reallocate expected losses and residual returns among the variable interest holders;
	•	changes in the party that has power to direct the activities of a VIE that most significantly impact the entity’s economic performance; and
	•	providing financial support to an entity that results in an implicit variable interest.
	All other entities not deemed to be VIEs with which the Company has involvement are evaluated for consolidation under other subtopics of ASC 810.
Foreign Currency Translation	Foreign Currency Translation
	Assets and liabilities of Citi’s foreign operations are translated from their respective functional currencies into U.S. dollars using period-end spot foreign-exchange rates. The effects of those translation adjustments are reported in Accumulated other comprehensive income (loss), a component of stockholders’ equity, along with any related hedge and tax effects, until realized upon sale or substantial liquidation of the foreign operation. Revenues and expenses of Citi’s foreign operations are translated monthly from their respective functional currencies into U.S. dollars at amounts that approximate weighted average exchange rates.
	For transactions whose terms are denominated in a currency other than the functional currency, including transactions denominated in the local currencies of foreign operations with the U.S. dollar as their functional currency, the effects of changes in exchange rates are primarily included in Principal transactions, along with the related effects of any economic hedges. Instruments used to hedge foreign currency exposures include foreign currency forward, option and swap contracts and in certain instances, designated issues of non-U.S. dollar debt. Foreign operations in countries with highly inflationary economies designate the U.S. dollar as their functional currency, with the effects of changes in exchange rates primarily included in Other revenue.
Investment Securities	Investment Securities
	Investments include fixed income and equity securities. Fixed income instruments include bonds, notes and redeemable preferred stocks, as well as certain loan-backed and structured securities that are subject to prepayment risk. Equity securities include common and nonredeemable preferred stock.
	Investment securities are classified and accounted for as follows:
	•	Fixed income securities classified as “held-to-maturity” are securities that the Company has both the ability and the intent to hold until maturity and are carried at amortized cost. Interest income on such securities is included in Interest revenue.
	•	Fixed income securities and marketable equity securities classified as “available-for-sale” are carried at fair value with changes in fair value reported in Accumulated other comprehensive income (loss), a component of Stockholders’ equity, net of applicable income taxes and hedges. Realized gains and losses on sales are included in income primarily on a specific identification cost basis. Interest and dividend income on such securities is included in Interest revenue.
	•	Certain investments in non-marketable equity securities and certain investments that would otherwise have been accounted for using the equity method are carried at fair value, since the Company has elected to apply fair value accounting. Changes in fair value of such investments are recorded in earnings.
	•	Certain non-marketable equity securities are carried at cost and are periodically assessed for other-than-temporary impairment, as described in Note 14 to the Consolidated Financial Statements.
	For investments in fixed income securities classified as held-to-maturity or available-for-sale, the accrual of interest income is suspended for investments that are in default or for which it is likely that future interest payments will not be made as scheduled.
	Investment securities are subject to evaluation for other-than-temporary impairment as described in Note 14 to the Consolidated Financial Statements.
	The Company uses a number of valuation techniques for investments carried at fair value, which are described in Note 25 to the Consolidated Financial Statements. Realized gains and losses on sales of investments are included in earnings.
Trading Account Assets and Liabilities	Trading Account Assets and Liabilities
	Trading account assets include debt and marketable equity securities, derivatives in a receivable position, residual interests in securitizations and physical commodities inventory. In addition, as described in Note 26 to the Consolidated Financial Statements, certain assets that Citigroup has elected to carry at fair value under the fair value option, such as loans and purchased guarantees, are also included in Trading account assets.
	Trading account liabilities include securities sold, not yet purchased (short positions) and derivatives in a net payable position, as well as certain liabilities that Citigroup has elected to carry at fair value (as described in Note 26 to the Consolidated Financial Statements).
	Other than physical commodities inventory, all trading account assets and liabilities are carried at fair value. Revenues generated from trading assets and trading liabilities are generally reported in Principal transactions and include realized gains and losses as well as unrealized gains and losses resulting from changes in the fair value of such instruments. Interest income on trading assets is recorded in Interest revenue reduced by interest expense on trading liabilities.
	Physical commodities inventory is carried at the lower of cost or market with related losses reported in Principal transactions. Realized gains and losses on sales of commodities inventory are included in Principal transactions. Investments in unallocated precious metals accounts (gold, silver, platinum and palladium) are accounted for as hybrid instruments containing a debt host contract and an embedded non-financial derivative instrument indexed to the price of the relevant precious metal. The embedded derivative instrument is separated from the debt host contract and accounted for at fair value. The debt host contract is accounted for at fair value under the fair value option, as described in Note 26 to the Consolidated Financial Statements.
	Derivatives used for trading purposes include interest rate, currency, equity, credit, and commodity swap agreements, options, caps and floors, warrants, and financial and commodity futures and forward contracts. Derivative asset and liability positions are presented net by counterparty on the Consolidated Balance Sheet when a valid master netting agreement exists and the other conditions set out in ASC 210-20, Balance Sheet—Offsetting, are met. See Note 23 to the Consolidated Financial Statements.
	The Company uses a number of techniques to determine the fair value of trading assets and liabilities, which are described in Note 25 to the Consolidated Financial Statements.
Securities Borrowed and Securities Loaned	Securities Borrowed and Securities Loaned
	Securities borrowing and lending transactions generally do not constitute a sale of the underlying securities for accounting purposes and are treated as collateralized financing transactions. Such transactions are recorded at the amount of proceeds advanced or received plus accrued interest. As described in Note 26 to the Consolidated Financial Statements, the Company has elected to apply fair value accounting to a number of securities borrowing and lending transactions. Fees paid or received for all securities lending and borrowing transactions are recorded in Interest expense or Interest revenue at the contractually specified rate.
	The Company monitors the fair value of securities borrowed or loaned on a daily basis and obtains or posts additional collateral in order to maintain contractual margin protection.
	As described in Note 25 to the Consolidated Financial Statements, the Company uses a discounted cash flow technique to determine the fair value of securities lending and borrowing transactions.
Repurchase and Resale Agreements	Repurchase and Resale Agreements
	Securities sold under agreements to repurchase (repos) and securities purchased under agreements to resell (reverse repos) generally do not constitute a sale of the underlying securities for accounting purposes and are treated as collateralized financing transactions. As described in Note 26 to the Consolidated Financial Statements, the Company has elected to apply fair value accounting to the majority of such transactions, with changes in fair value reported in earnings. Any transactions for which fair value accounting has not been elected are recorded at the amount of cash advanced or received plus accrued interest. Irrespective of whether the Company has elected fair value accounting, interest paid or received on all repo and reverse repo transactions is recorded in Interest expense or Interest revenue at the contractually specified rate.
	Where the conditions of ASC 210-20-45-11, Balance Sheet-Offsetting: Repurchase and Reverse Repurchase Agreements, are met, repos and reverse repos are presented net on the Consolidated Balance Sheet.
	The Company’s policy is to take possession of securities purchased under reverse repurchase agreements. The Company monitors the fair value of securities subject to repurchase or resale on a daily basis and obtains or posts additional collateral in order to maintain contractual margin protection.
	As described in Note 25 to the Consolidated Financial Statements, the Company uses a discounted cash flow technique to determine the fair value of repo and reverse repo transactions.
Loans	Loans
	Loans are reported at their outstanding principal balances net of any unearned income and unamortized deferred fees and costs except that credit card receivable balances also include accrued interest and fees. Loan origination fees and certain direct origination costs are generally deferred and recognized as adjustments to income over the lives of the related loans.
	As described in Note 26 to the Consolidated Financial Statements, Citi has elected fair value accounting for certain loans. Such loans are carried at fair value with changes in fair value reported in earnings. Interest income on such loans is recorded in Interest revenue at the contractually specified rate.
	Loans for which the fair value option has not been elected are classified upon origination or acquisition as either held-for-investment or held-for-sale. This classification is based on management’s initial intent and ability with regard to those loans.
	Loans that are held-for-investment are classified as Loans, net of unearned income on the Consolidated Balance Sheet, and the related cash flows are included within the cash flows from investing activities category in the Consolidated Statement of Cash Flows on the line Change in loans. However, when the initial intent for holding a loan has changed from held-for-investment to held-for-sale, the loan is reclassified to held-for-sale, but the related cash flows continue to be reported in cash flows from investing activities in the Consolidated Statement of Cash Flows on the line Proceeds from sales and securitizations of loans.
	Consumer loans
	Consumer loans represent loans and leases managed primarily by the Global Consumer Banking businesses and Citi Holdings.
	Consumer non-accrual and re-aging policies
	As a general rule, interest accrual ceases for installment and real estate (both open- and closed-end) loans when payments are 90 days contractually past due. For credit cards and other unsecured revolving loans, however, Citi generally accrues interest until payments are 180 days past due. As a result of OCC guidance, home equity loans in regulated bank entities are classified as non-accrual if the related residential first mortgage is 90 days or more past due. Also as a result of OCC guidance, mortgage loans in regulated bank entities discharged through Chapter 7 bankruptcy, other than FHA-insured loans, are classified as non-accrual. Commercial market loans are placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due.
	Loans that have been modified to grant a concession to a borrower in financial difficulty may not be accruing interest at the time of the modification. The policy for returning such modified loans to accrual status varies by product and/or region. In most cases, a minimum number of payments (ranging from one to six) is required, while in other cases the loan is never returned to accrual status. For regulated bank entities, such modified loans are returned to accrual status if a credit evaluation at the time of, or subsequent to, the modification indicates the borrower is able to meet the restructured terms, and the borrower is current and has demonstrated a reasonable period of sustained payment performance (minimum six months of consecutive payments).
	For U.S. consumer loans, generally one of the conditions to qualify for modification is that a minimum number of payments (typically ranging from one to three) must be made. Upon modification, the loan is re-aged to current status. However, re-aging practices for certain open-ended consumer loans, such as credit cards, are governed by Federal Financial Institutions Examination Council (FFIEC) guidelines. For open-ended consumer loans subject to FFIEC guidelines, one of the conditions for the loan to be re-aged to current status is that at least three consecutive minimum monthly payments, or the equivalent amount, must be received. In addition, under FFIEC guidelines, the number of times that such a loan can be re-aged is subject to limitations (generally once in 12 months and twice in five years). Furthermore, Federal Housing Administration (FHA) and Department of Veterans Affairs (VA) loans may only be modified under those respective agencies’ guidelines and payments are not always required in order to re-age a modified loan to current.
	Consumer charge-off policies
	Citi’s charge-off policies follow the general guidelines below:
	•	Unsecured installment loans are charged off at 120 days contractually past due.
	•	Unsecured revolving loans and credit card loans are charged off at 180 days contractually past due.
	•	Loans secured with non-real estate collateral are written down to the estimated value of the collateral, less costs to sell, at 120 days contractually past due.
	•	Real estate-secured loans are written down to the estimated value of the property, less costs to sell, at 180 days contractually past due.
	•	Real estate-secured loans are charged off no later than 180 days contractually past due if a decision has been made not to foreclose on the loans.
	•	Non-bank real estate-secured loans are charged off at the earlier of 180 days contractually past due, if there have been no payments within the last six months, or 360 days contractually past due, if a decision has been made not to foreclose on the loans.
	•	Non-bank loans secured by real estate are written down to the estimated value of the property, less costs to sell, at the earlier of the receipt of title, the initiation of foreclosure (a process that must commence when payments are 120 days contractually past due), when the loan is 180 days contractually past due if there have been no payments within the past six months or 360 days contractually past due.
	•	Non-bank unsecured personal loans are charged off at the earlier of 180 days contractually past due if there have been no payments within the last six months, or 360 days contractually past due.
	•	Unsecured loans in bankruptcy are charged off within 60 days of notification of filing by the bankruptcy court or in accordance with Citi’s charge-off policy, whichever occurs earlier.
	•	Consistent with OCC guidance, real estate-secured loans that were discharged through Chapter 7 bankruptcy, other than FHA-insured loans, are written down to the estimated value of the property, less costs to sell. Other real estate-secured loans in bankruptcy are written down to the estimated value of the property, less costs to sell, at the later of 60 days after notification or 60 days contractually past due.
	•	Non-bank loans secured by real estate that are discharged through Chapter 7 bankruptcy are written down to the estimated value of the property, less costs to sell, at 60 days contractually past due.
	•	Non-bank unsecured personal loans in bankruptcy are charged off when they are 30 days contractually past due.
	•	Commercial market loans are written down to the extent that principal is judged to be uncollectable.
	Corporate loans
	Corporate loans represent loans and leases managed by ICG or, to a much lesser extent, Citi Holdings. Corporate loans are identified as impaired and placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due, except when the loan is well collateralized and in the process of collection. Any interest accrued on impaired corporate loans and leases is reversed at 90 days and charged against current earnings, and interest is thereafter included in earnings only to the extent actually received in cash. When there is doubt regarding the ultimate collectability of principal, all cash receipts are thereafter applied to reduce the recorded investment in the loan.
	Impaired corporate loans and leases are written down to the extent that principal is deemed to be uncollectable. Impaired collateral-dependent loans and leases, where repayment is expected to be provided solely by the sale of the underlying collateral and there are no other available and reliable sources of repayment, are written down to the lower of cost or collateral value. Cash-basis loans are returned to accrual status when all contractual principal and interest amounts are reasonably assured of repayment and there is a sustained period of repayment performance in accordance with the contractual terms.
Loans Held-for-Sale	Loans Held-for-Sale
	Corporate and consumer loans that have been identified for sale are classified as loans held-for-sale and included in Other assets. The practice of Citi’s U.S. prime mortgage business has been to sell substantially all of its conforming loans. As such, U.S. prime mortgage conforming loans are classified as held-for-sale and the fair value option is elected at origination, with changes in fair value recorded in Other revenue. With the exception of those loans for which the fair value option has been elected, held-for-sale loans are accounted for at the lower of cost or market value, with any write-downs or subsequent recoveries charged to Other revenue. The related cash flows are classified in the Consolidated Statement of Cash Flows in the cash flows from operating activities category on the line Change in loans held-for-sale.
Allowance for Loan Losses	Allowance for Loan Losses
	Allowance for loan losses represents management’s best estimate of probable losses inherent in the portfolio, including probable losses related to large individually evaluated impaired loans and troubled debt restructurings. Attribution of the allowance is made for analytical purposes only, and the entire allowance is available to absorb probable loan losses inherent in the overall portfolio. Additions to the allowance are made through the Provision for loan losses. Loan losses are deducted from the allowance and subsequent recoveries are added. Assets received in exchange for loan claims in a restructuring are initially recorded at fair value, with any gain or loss reflected as a recovery or charge-off to the provision.
	Consumer loans
	For consumer loans, each portfolio of non-modified smaller-balance, homogeneous loans is independently evaluated by product type (e.g., residential mortgage, credit card, etc.) for impairment in accordance with ASC 450-20. The allowance for loan losses attributed to these loans is established via a process that estimates the probable losses inherent in the specific portfolio. This process includes migration analysis, in which historical delinquency and credit loss experience is applied to the current aging of the portfolio, together with analyses that reflect current and anticipated economic conditions, including changes in housing prices and unemployment trends. Citi’s allowance for loan losses under ASC 450 only considers contractual principal amounts due, except for credit card loans where estimated loss amounts related to accrued interest receivable are also included.
	Management also considers overall portfolio indicators, including historical credit losses, delinquent, non-performing and classified loans, trends in volumes and terms of loans, an evaluation of overall credit quality, the credit process, including lending policies and procedures, and economic, geographical, product and other environmental factors.
	Separate valuation allowances are determined for impaired smaller-balance homogeneous loans whose terms have been modified in a troubled debt restructuring (TDR). Long-term modification programs, as well as short-term (less than 12 months) modifications originated beginning January 1, 2011 that provide concessions (such as interest rate reductions) to borrowers in financial difficulty, are reported as TDRs. In addition, loan modifications that involve a trial period are reported as TDRs at the start of the trial period. The allowance for loan losses for TDRs is determined in accordance with ASC 310-10-35 considering all available evidence, including, as appropriate, the present value of the expected future cash flows discounted at the loan’s original contractual effective rate, the secondary market value of the loan and the fair value of collateral less disposal costs. These expected cash flows incorporate modification program default rate assumptions. The original contractual effective rate for credit card loans is the pre-modification rate, which may include interest rate increases under the original contractual agreement with the borrower.
	Valuation allowances for commercial market loans, which are classifiably managed Consumer loans, are determined in the same manner as for Corporate loans and are described in more detail in the following section. Generally, an asset-specific component is calculated under ASC 310-10-35 on an individual basis for larger-balance, non-homogeneous loans that are considered impaired and the allowance for the remainder of the classifiably managed Consumer loan portfolio is calculated under ASC 450 using a statistical methodology that may be supplemented by management adjustment.
	Corporate loans
	In the corporate portfolios, the Allowance for loan losses includes an asset-specific component and a statistically based component. The asset-specific component is calculated under ASC 310-10-35, Receivables—Subsequent Measurement (formerly SFAS 114) on an individual basis for larger-balance, non-homogeneous loans, which are considered impaired. An asset-specific allowance is established when the discounted cash flows, collateral value (less disposal costs) or observable market price of the impaired loan are lower than its carrying value. This allowance considers the borrower’s overall financial condition, resources, and payment record, the prospects for support from any financially responsible guarantors (discussed further below) and, if appropriate, the realizable value of any collateral. The asset-specific component of the allowance for smaller balance impaired loans is calculated on a pool basis considering historical loss experience.
	The allowance for the remainder of the loan portfolio is determined under ASC 450, Contingencies (formerly SFAS 5) using a statistical methodology, supplemented by management judgment. The statistical analysis considers the portfolio’s size, remaining tenor and credit quality as measured by internal risk ratings assigned to individual credit facilities, which reflect probability of default and loss given default. The statistical analysis considers historical default rates and historical loss severity in the event of default, including historical average levels and historical variability. The result is an estimated range for inherent losses. The best estimate within the range is then determined by management’s quantitative and qualitative assessment of current conditions, including general economic conditions, specific industry and geographic trends, and internal factors including portfolio concentrations, trends in internal credit quality indicators, and current and past underwriting standards.
	For both the asset-specific and the statistically based components of the Allowance for loan losses, management may incorporate guarantor support. The financial wherewithal of the guarantor is evaluated, as applicable, based on net worth, cash flow statements and personal or company financial statements which are updated and reviewed at least annually. Citi seeks performance on guarantee arrangements in the normal course of business. Seeking performance entails obtaining satisfactory cooperation from the guarantor or borrower in the specific situation. This regular cooperation is indicative of pursuit and successful enforcement of the guarantee; the exposure is reduced without the expense and burden of pursuing a legal remedy. A guarantor’s reputation and willingness to work with Citigroup is evaluated based on the historical experience with the guarantor and the knowledge of the marketplace. In the rare event that the guarantor is unwilling or unable to perform or facilitate borrower cooperation, Citi pursues a legal remedy; however, enforcing a guarantee via legal action against the guarantor is not the primary means of resolving a troubled loan situation and rarely occurs. If Citi does not pursue a legal remedy, it is because Citi does not believe that the guarantor has the financial wherewithal to perform regardless of legal action or because there are legal limitations on simultaneously pursuing guarantors and foreclosure. A guarantor’s reputation does not impact Citi’s decision or ability to seek performance under the guarantee.
	In cases where a guarantee is a factor in the assessment of loan losses, it is included via adjustment to the loan’s internal risk rating, which in turn is the basis for the adjustment to the statistically based component of the Allowance for loan losses. To date, it is only in rare circumstances that an impaired commercial loan or commercial real estate loan is carried at a value in excess of the appraised value due to a guarantee.
	When Citi’s monitoring of the loan indicates that the guarantor’s wherewithal to pay is uncertain or has deteriorated, there is either no change in the risk rating, because the guarantor’s credit support was never initially factored in, or the risk rating is adjusted to reflect that uncertainty or deterioration. Accordingly, a guarantor’s ultimate failure to perform or a lack of legal enforcement of the guarantee does not materially impact the allowance for loan losses, as there is typically no further significant adjustment of the loan’s risk rating at that time. Where Citi is not seeking performance under the guarantee contract, it provides for loan losses as if the loans were non-performing and not guaranteed.
	Reserve Estimates and Policies
	Management provides reserves for an estimate of probable losses inherent in the funded loan portfolio on the Consolidated Balance Sheet in the form of an allowance for loan losses. These reserves are established in accordance with Citigroup’s credit reserve policies, as approved by the Audit Committee of the Board of Directors. Citi’s Chief Risk Officer and Chief Financial Officer review the adequacy of the credit loss reserves each quarter with representatives from the risk management and finance staffs for each applicable business area. Applicable business areas include those having classifiably managed portfolios, where internal credit-risk ratings are assigned (primarily Institutional Clients Group and Global Consumer Banking) or modified Consumer loans, where concessions were granted due to the borrowers’ financial difficulties.
	The above-mentioned representatives for these business areas present recommended reserve balances for their funded and unfunded lending portfolios along with supporting quantitative and qualitative data discussed below:
	Estimated probable losses for non-performing, non-homogeneous exposures within a business line’s classifiably managed portfolio and impaired smaller-balance homogeneous loans whose terms have been modified due to the borrowers’ financial difficulties, where it was determined that a concession was granted to the borrower. Consideration may be given to the following, as appropriate, when determining this estimate: (i) the present value of expected future cash flows discounted at the loan’s original effective rate; (ii) the borrower’s overall financial condition, resources and payment record; and (iii) the prospects for support from financially responsible guarantors or the realizable value of any collateral. In the determination of the allowance for loan losses for TDRs, management considers a combination of historical re-default rates, the current economic environment and the nature of the modification program when forecasting expected cash flows. When impairment is measured based on the present value of expected future cash flows, the entire change in present value is recorded in the Provision for loan losses.
	Statistically calculated losses inherent in the classifiably managed portfolio for performing and de minimis non-performing exposures. The calculation is based on: (i) Citi’s internal system of credit-risk ratings, which are analogous to the risk ratings of the major rating agencies; and (ii) historical default and loss data, including rating agency information regarding default rates from 1983 to 2013 and internal data dating to the early 1970s on severity of losses in the event of default. Adjustments may be made to this data. Such adjustments include: (i) statistically calculated estimates to cover the historical fluctuation of the default rates over the credit cycle, the historical variability of loss severity among defaulted loans, and the degree to which there are large obligor concentrations in the global portfolio; and (ii) adjustments made for specific known items, such as current environmental factors and credit trends.
	In addition, representatives from each of the risk management and finance staffs that cover business areas with delinquency-managed portfolios containing smaller-balance homogeneous loans present their recommended reserve balances based on leading credit indicators, including loan delinquencies and changes in portfolio size as well as economic trends, including current and future housing prices, unemployment, length of time in foreclosure, costs to sell and GDP. This methodology is applied separately for each individual product within each geographic region in which these portfolios exist.
	This evaluation process is subject to numerous estimates and judgments. The frequency of default, risk ratings, loss recovery rates, the size and diversity of individual large credits, and the ability of borrowers with foreign currency obligations to obtain the foreign currency necessary for orderly debt servicing, among other things, are all taken into account during this review. Changes in these estimates could have a direct impact on the credit costs in any period and could result in a change in the allowance.
	Allowance for Unfunded Lending Commitments
	A similar approach to the allowance for loan losses is used for calculating a reserve for the expected losses related to unfunded loan commitments and standby letters of credit. This reserve is classified on the balance sheet in Other liabilities. Changes to the allowance for unfunded lending commitments are recorded in the Provision for unfunded lending commitments.
Mortgage Servicing Rights (MSRs)	Mortgage Servicing Rights
	Mortgage servicing rights (MSRs) are recognized as intangible assets when purchased or when the Company sells or securitizes loans acquired through purchase or origination and retains the right to service the loans. Mortgage servicing rights are accounted for at fair value, with changes in value recorded in Other revenue in the Company’s Consolidated Statement of Income.
	Additional information on the Company’s MSRs can be found in Note 22 to the Consolidated Financial Statements.
Representations and Warranties	Citigroup Residential Mortgages—Representations and Warranties
	In connection with Citi’s sales of residential mortgage loans to the U.S. government-sponsored entities (GSEs) and private investors, as well as through private-label securitizations, Citi typically makes representations and warranties that the loans sold meet certain requirements, such as the loan’s compliance with any applicable loan criteria established by the buyer and the validity of the lien securing the loan. The specific representations and warranties made by Citi in any particular transaction depend on, among other things, the nature of the transaction and the requirements of the investor.
	These sales expose Citi to potential claims for alleged breaches of its representations and warranties. In the event of a breach of its representations and warranties, Citi could be required either to repurchase the mortgage loans with the identified defects (generally at unpaid principal balance plus accrued interest) or to indemnify (make-whole) the investors for their losses on these loans.
	Citi has recorded a repurchase reserve for its potential repurchase or make-whole liability regarding residential mortgage representation and warranty claims. Since the first quarter of 2013, Citi has considered private-label residential mortgage securitization representation and warranty claims as part of its litigation accrual analysis and not as part of its repurchase reserve. See Note 28 to the Consolidated Financial Statements for additional information on Citi’s potential private-label residential mortgage securitization exposure. Accordingly, Citi’s repurchase reserve has been recorded for purposes of its potential representation and warranty repurchase liability resulting from its whole loan sales to the GSEs and, to a lesser extent private investors, which are made through Citi’s Consumer business in CitiMortgage.
	In the case of a repurchase, Citi will bear any subsequent credit loss on the mortgage loan and the loan is typically considered a credit-impaired loan and accounted for under AICPA Statement of Position (SOP) 03-3, “Accounting of Certain Loans and Debt Securities Acquired in a Transfer” (now incorporated into ASC 310-30, Receivables-Loans and Debt Securities Acquired with Deteriorated Credit Quality) (SOP 03-3).
	In the case of a repurchase of a credit-impaired SOP 03-3 loan, the difference between the loan’s fair value and unpaid principal balance at the time of the repurchase is recorded as a utilization of the repurchase reserve. Make-whole payments to the investor are also treated as utilizations and charged directly against the reserve. The repurchase reserve is estimated when Citi sells loans (recorded as an adjustment to the gain on sale, which is included in Other revenue in the Consolidated Statement of Income) and is updated quarterly. Any change in estimate is recorded in Other revenue.
Goodwill	Goodwill
	Goodwill represents the excess of acquisition cost over the fair value of net tangible and intangible assets acquired. Goodwill is subject to annual impairment testing and between annual tests if an event occurs or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying amount.
	Under ASC 350, Intangibles—Goodwill and Other, the Company has an option to assess qualitative factors to determine if it is necessary to perform the goodwill impairment test. If, after assessing the totality of events or circumstances, the Company determines that it is not more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, no further testing is necessary. If, however, the Company determines that it is more-likely-than not that the fair value of a reporting unit is less than its carrying amount, then the Company must perform the first step of the two-step goodwill impairment test.
	The Company has an unconditional option to bypass the qualitative assessment for any reporting unit in any reporting period and proceed directly to the first step of the goodwill impairment test. Furthermore, on any business dispositions, goodwill is allocated to the business disposed of based on the ratio of the fair value of the business disposed of to the fair value of the reporting unit.
	The first step requires a comparison of the fair value of the individual reporting unit to its carrying value, including goodwill. If the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not to be impaired and no further analysis is necessary. If the carrying value of the reporting unit exceeds the fair value, this is an indication of potential impairment and a second step of testing is performed to measure the amount of impairment, if any, for that reporting unit.
	If required, the second step involves calculating the implied fair value of goodwill for each of the affected reporting units. The implied fair value of goodwill is determined in the same manner as the amount of goodwill recognized in a business combination, which is the excess of the fair value of the reporting unit determined in step one over the fair value of the net assets and identifiable intangibles as if the reporting unit were being acquired. If the amount of the goodwill allocated to the reporting unit exceeds the implied fair value of the goodwill in the pro forma purchase price allocation, an impairment charge is recorded for the excess. A recognized impairment charge cannot exceed the amount of goodwill allocated to a reporting unit and cannot subsequently be reversed even if the fair value of the reporting unit recovers.
	Additional information on Citi’s goodwill impairment testing can be found in Note 17 to the Consolidated Financial Statements.
Intangible Assets	Intangible Assets
	Intangible assets, including core deposit intangibles, present value of future profits, purchased credit card relationships, other customer relationships, and other intangible assets, but excluding MSRs, are amortized over their estimated useful lives. Intangible assets deemed to have indefinite useful lives, primarily certain asset management contracts and trade names, are not amortized and are subject to annual impairment tests. An impairment exists if the carrying value of the indefinite-lived intangible asset exceeds its fair value. For other intangible assets subject to amortization, an impairment is recognized if the carrying amount is not recoverable and exceeds the fair value of the intangible asset.
	Similar to the goodwill impairment analysis, in performing the annual impairment analysis for indefinite-lived intangible assets, Citi may and has elected to bypass the optional qualitative assessment, choosing instead to perform a quantitative analysis.
Other Assets and Other Liabilities	Other Assets and Other Liabilities
	Other assets include, among other items, loans held-for-sale, deferred tax assets, equity method investments, interest and fees receivable, premises and equipment (including purchased and developed software), repossessed assets, and other receivables. Other liabilities include, among other items, accrued expenses and other payables, deferred tax liabilities, and reserves for legal claims, taxes, unfunded lending commitments, repositioning reserves, and other matters.
Other Real Estate Owned and Repossessed Assets	Other Real Estate Owned and Repossessed Assets
	Real estate or other assets received through foreclosure or repossession are generally reported in Other assets, net of a valuation allowance for selling costs and subsequent declines in fair value.
Securitizations	Securitizations
	The Company primarily securitizes credit card receivables and mortgages. Other types of securitized assets include corporate debt instruments (in cash and synthetic form).
	There are two key accounting determinations that must be made relating to securitizations. Citi first makes a determination as to whether the securitization entity must be consolidated. Second, it determines whether the transfer of financial assets to the entity is considered a sale under GAAP. If the securitization entity is a VIE, the Company consolidates the VIE if it is the primary beneficiary (as discussed in “Variable Interest Entities” above). For all other securitization entities determined not to be VIEs in which Citigroup participates, consolidation is based on which party has voting control of the entity, giving consideration to removal and liquidation rights in certain partnership structures. Only securitization entities controlled by Citigroup are consolidated.
	Interests in the securitized and sold assets may be retained in the form of subordinated or senior interest-only strips, subordinated tranches, spread accounts and servicing rights. In credit card securitizations, the Company retains a seller’s interest in the credit card receivables transferred to the trusts, which is not in securitized form. In the case of consolidated securitization entities, including the credit card trusts, these retained interests are not reported on Citi’s Consolidated Balance Sheet. The securitized loans remain on
	the balance sheet. Substantially all of the Consumer loans sold or securitized through non-consolidated trusts by Citigroup are U.S. prime residential mortgage loans. Retained interests in non-consolidated mortgage securitization trusts are classified as Trading account assets, except for MSRs, which are included in Mortgage servicing rights on Citigroup’s Consolidated Balance Sheet.
Debt	Debt
	Short-term borrowings and Long-term debt are accounted for at amortized cost, except where the Company has elected to report the debt instruments, including certain structured notes at fair value, or the debt is in a fair value hedging relationship.
Transfers of Financial Assets	Transfers of Financial Assets
	For a transfer of financial assets to be considered a sale: (i) the assets must have been legally isolated from the Company, even in bankruptcy or other receivership; (ii) the purchaser must have the right to pledge or sell the assets transferred or, if the purchaser is an entity whose sole purpose is to engage in securitization and asset-backed financing activities through the issuance of beneficial interests and that entity is constrained from pledging the assets it receives, each beneficial interest holder must have the right to sell or pledge their beneficial interests; and (iii) the Company may not have an option or obligation to reacquire the assets.
	If these sale requirements are met, the assets are removed from the Company’s Consolidated Balance Sheet. If the conditions for sale are not met, the transfer is considered to be a secured borrowing, the assets remain on the Consolidated Balance Sheet and the sale proceeds are recognized as the Company’s liability. A legal opinion on a sale generally is obtained for complex transactions or where the Company has continuing involvement with assets transferred or with the securitization entity. For a transfer to be eligible for sale accounting, those opinions must state that the asset transfer would be considered a sale and that the assets transferred would not be consolidated with the Company’s other assets in the event of the Company’s insolvency.
	For a transfer of a portion of a financial asset to be considered a sale, the portion transferred must meet the definition of a participating interest. A participating interest must represent a pro rata ownership in an entire financial asset; all cash flows must be divided proportionately, with the same priority of payment; no participating interest in the transferred asset may be subordinated to the interest of another participating interest holder; and no party may have the right to pledge or exchange the entire financial asset unless all participating interest holders agree. Otherwise, the transfer is accounted for as a secured borrowing.
	See Note 22 to the Consolidated Financial Statements for further discussion.
Risk Management Activities-Derivatives Used for Hedging Purposes	Risk Management Activities—Derivatives Used for Hedging Purposes
	The Company manages its exposures to market rate movements outside its trading activities by modifying the asset and liability mix, either directly or through the use of derivative financial products, including interest-rate swaps, futures, forwards, and purchased options, as well as foreign-exchange contracts. These end-user derivatives are carried at fair value in Other assets, Other liabilities, Trading account assets and Trading account liabilities.
	To qualify as an accounting hedge under the hedge accounting rules (versus an economic hedge where hedge accounting is not sought), a derivative must be highly effective in offsetting the risk designated as being hedged. The hedge relationship must be formally documented at inception, detailing the particular risk management objective and strategy for the hedge. This includes the item and risk being hedged, the derivative being used and how effectiveness will be assessed and ineffectiveness measured. The effectiveness of these hedging relationships is evaluated both on a retrospective and prospective basis, typically using quantitative measures of correlation with hedge ineffectiveness measured and recorded in current earnings.
	If a hedge relationship is not highly effective, it no longer qualifies as an accounting hedge and hedge accounting may not be applied. Any gains or losses attributable to the derivatives, as well as subsequent changes in fair value, are recognized in Other revenue or Principal transactions with no offset to the hedged item, similar to trading derivatives.
	The foregoing criteria are applied on a decentralized basis, consistent with the level at which market risk is managed, but are subject to various limits and controls. The underlying asset, liability or forecasted transaction may be an individual item or a portfolio of similar items.
	For fair value hedges, in which derivatives hedge the fair value of assets or liabilities, changes in the fair value of derivatives are reflected in Other revenue, together with changes in the fair value of the hedged item related to the hedged risk. These amounts are expected to, and generally do, offset each other. Any net amount, representing hedge ineffectiveness, is reflected in current earnings. Citigroup’s fair value hedges are primarily hedges of fixed-rate long-term debt and available-for-sale securities.
	For cash flow hedges, in which derivatives hedge the variability of cash flows related to floating- and fixed-rate assets, liabilities or forecasted transactions, the accounting treatment depends on the effectiveness of the hedge. To the extent these derivatives are effective in offsetting the variability of the hedged cash flows, the effective portion of the changes in the derivatives’ fair values will not be included in current earnings, but is reported in Accumulated other comprehensive income (loss). These changes in fair value will be included in earnings of future periods when the hedged cash flows impact earnings. To the extent these derivatives are not effective, changes in their fair values are immediately included in Other revenue. Citigroup’s cash flow hedges primarily include hedges of floating-rate debt and floating-rate assets, including loans and securities
	purchased under agreement to resell, as well as rollovers of short-term fixed-rate liabilities and floating-rate liabilities and forecasted debt issuances.
	For net investment hedges in which derivatives hedge the foreign currency exposure of a net investment in a foreign operation, the accounting treatment will similarly depend on the effectiveness of the hedge. The effective portion of the change in fair value of the derivative, including any forward premium or discount, is reflected in Accumulated other comprehensive income (loss) as part of the foreign currency translation adjustment.
	For those accounting hedge relationships that are terminated or when hedge designations are removed, the hedge accounting treatment described in the paragraphs above is no longer applied. Instead, the end-user derivative is terminated or transferred to the trading account. For fair value hedges, any changes in the fair value of the hedged item remain as part of the basis of the asset or liability and are ultimately reflected as an element of the yield. For cash flow hedges, any changes in fair value of the end-user derivative remain in Accumulated other comprehensive income (loss) and are included in earnings of future periods when the hedged cash flows impact earnings. However, if it becomes probable that some or all of the hedged forecasted transactions will not occur, any amounts that remain in Accumulated other comprehensive income (loss) related to these transactions are immediately reflected in Other revenue.
	End-user derivatives that are economic hedges, rather than qualifying for hedge accounting, are also carried at fair value, with changes in value included in Principal transactions or Other revenue. Citigroup often uses economic hedges when qualifying for hedge accounting would be too complex or operationally burdensome. Examples are hedges of the credit risk component of commercial loans and loan commitments. Citigroup periodically evaluates its hedging strategies in other areas and may designate either a qualifying hedge or an economic hedge, after considering the relative cost and benefits. Economic hedges are also employed when the hedged item itself is marked to market through current earnings, such as hedges of commitments to originate one-to-four-family mortgage loans to be held for sale and MSRs. See Note 23 to the Consolidated Financial Statements for a further discussion of the Company’s hedging and derivative activities.
Employee Benefits Expense	Employee Benefits Expense
	Employee benefits expense includes current service costs of pension and other postretirement benefit plans (which are accrued on a current basis), contributions and unrestricted awards under other employee plans, the amortization of restricted stock awards and costs of other employee benefits.
	For its most significant pension and postretirement benefit plans (Significant Plans), the Company measures and discloses plan obligations, plan assets and periodic plan expense quarterly, instead of annually. The effect of remeasuring the Significant Plan obligations and assets by updating plan actuarial assumptions on a quarterly basis is reflected in Accumulated other comprehensive income (loss) and periodic plan expense. All other plans (All Other Plans) are remeasured annually. See Note 8 to the Consolidated Financial Statements.
Stock-Based Compensation	Stock-Based Compensation
	The Company recognizes compensation expense related to stock and option awards over the requisite service period, generally based on the instruments’ grant-date fair value, reduced by expected forfeitures. Compensation cost related to awards granted to employees who meet certain age plus years-of-service requirements (retirement-eligible employees) is accrued in the year prior to the grant date, in the same manner as the accrual for cash incentive compensation. Certain stock awards with performance conditions or certain clawback provisions are subject to variable accounting, pursuant to which the associated compensation expense fluctuates with changes in Citigroup’s stock price. See Note 7 to the Consolidated Financial Statements.
Income Taxes	Income Taxes
	The Company is subject to the income tax laws of the U.S. and its states and municipalities, and the foreign jurisdictions in which it operates. These tax laws are complex and subject to different interpretations by the taxpayer and the relevant governmental taxing authorities. In establishing a provision for income tax expense, the Company must make judgments and interpretations about the application of these inherently complex tax laws. The Company must also make estimates about when in the future certain items will affect taxable income in the various tax jurisdictions, both domestic and foreign.
	Disputes over interpretations of the tax laws may be subject to review and adjudication by the court systems of the various tax jurisdictions or may be settled with the taxing authority upon examination or audit. The Company treats interest and penalties on income taxes as a component of Income tax expense.
	Deferred taxes are recorded for the future consequences of events that have been recognized for financial statements or tax returns, based upon enacted tax laws and rates. Deferred tax assets are recognized subject to management’s judgment that realization is more-likely-than-not. FASB Interpretation No. 48, “Accounting for Uncertainty in Income Taxes” (FIN 48) (now incorporated into ASC 740, Income Taxes), sets out a consistent framework to determine the appropriate level of tax reserves to maintain for uncertain tax positions. This interpretation uses a two-step approach wherein a tax benefit is recognized if a position is more-likely-than-not to be sustained. The amount of the benefit is then measured to be the highest tax benefit that is greater than 50% likely to be realized. ASC 740 also sets out disclosure requirements to enhance transparency of an entity’s tax reserves.
	See Note 9 to the Consolidated Financial Statements for a further description of the Company’s tax provision and related income tax assets and liabilities.
Commissions, Underwriting and Principal Transactions	Commissions, Underwriting and Principal Transactions
	Commissions revenues are recognized in income when earned. Underwriting revenues are recognized in income typically at the closing of the transaction. Principal transactions revenues are recognized in income on a trade-date basis. See Note 5 to the Consolidated Financial Statements for a description of the Company’s revenue recognition policies for commissions and fees, and Note 6 to the Consolidated Financial Statements for details of principal transactions revenue.
Earnings per Share	Earnings per Share
	Earnings per share (EPS) is computed after deducting preferred stock dividends. The Company has granted restricted and deferred share awards with dividend rights that are considered to be participating securities, which are akin to a second class of common stock. Accordingly, a portion of Citigroup’s earnings is allocated to those participating securities in the EPS calculation.
	Basic earnings per share is computed by dividing income available to common stockholders after the allocation of dividends and undistributed earnings to the participating securities by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised. It is computed after giving consideration to the weighted average dilutive effect of the Company’s stock options and warrants and convertible securities and after the allocation of earnings to the participating securities.
Use of Estimates	Use of Estimates
	Management must make estimates and assumptions that affect the Consolidated Financial Statements and the related footnote disclosures. Such estimates are used in connection with certain fair value measurements. See Note 25 to the Consolidated Financial Statements for further discussions on estimates used in the determination of fair value. Moreover, estimates are significant in determining the amounts of other-than-temporary impairments, impairments of goodwill and other intangible assets, provisions for probable losses that may arise from credit-related exposures and probable and estimable losses related to litigation and regulatory proceedings, and tax reserves. While management makes its best judgment, actual amounts or results could differ from those estimates. Current market conditions increase the risk and complexity of the judgments in these estimates.
Cash Flows	Cash Flows
	Cash equivalents are defined as those amounts included in Cash and due from banks. Cash flows from risk management activities are classified in the same category as the related assets and liabilities.
Related Party Transactions	Related Party Transactions
	The Company has related party transactions with certain of its subsidiaries and affiliates. These transactions, which are primarily short-term in nature, include cash accounts, collateralized financing transactions, margin accounts, derivative trading, charges for operational support and the borrowing and lending of funds, and are entered into in the ordinary course of business.
Accounting Changes	ACCOUNTING CHANGES
	Accounting for Share-Based Payments with Performance Targets
	In June 2014, the FASB issued Accounting Standards Update (ASU) No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (a consensus of the FASB Emerging Issues Task Force). The ASU prescribes the accounting to be applied to share-based awards that contain performance targets, the outcome of which will only be confirmed after the employee’s service period associated with the award has ended. Citi elected to adopt this ASU from the third quarter of 2014. The impact of adopting the ASU was not material.
	Discontinued Operations and Significant Disposals
	The FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 810) and Property, Plant, and Equipment (Topic 360), Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (ASU 2014-08) in April 2014. ASU 2014-08 changes the criteria for reporting discontinued operations while enhancing disclosures. Under the ASU, only disposals representing a strategic shift having a major effect on an entity’s operations and financial results, such as a disposal of a major geographic area, a major line of business or a major equity method investment, may be presented as discontinued operations. Additionally, the ASU requires expanded disclosures about discontinued operations that will provide more information about the assets, liabilities, income and expenses of discontinued operations.
	The Company early-adopted the ASU in the second quarter of 2014 on a prospective basis for all disposals (or classifications as held-for-sale) of components of an entity that occurred on or after April 1, 2014. As a result of the adoption of the ASU, fewer disposals will now qualify for reporting as discontinued operations; however, disclosure of the pretax income attributable to a disposal of a significant part of an organization that does not qualify for discontinued operations reporting is required. The impact of adopting the ASU was not material.
	Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Foreign Subsidiaries
	In March 2013, the FASB issued ASU No. 2013-05, Foreign Currency Matters (Topic 830): Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity (a consensus of the FASB Emerging Issues Task Force). This ASU clarifies the accounting for the cumulative translation adjustment (CTA) when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. The ASU requires the CTA to remain in equity until the foreign entity is disposed of or it is completely or substantially liquidated.
	This ASU became effective for Citi on January 1, 2014 and was applied on a prospective basis. The accounting prescribed in this ASU is consistent with Citi’s prior practice and, as a result, adoption did not result in any impact to Citi.
	OCC Chapter 7 Bankruptcy Guidance
	In the third quarter of 2012, the Office of the Comptroller of the Currency (OCC) issued guidance relating to the accounting for mortgage loans discharged through bankruptcy proceedings pursuant to Chapter 7 of the U.S. Bankruptcy Code (Chapter 7 bankruptcy). Under this OCC guidance, the discharged loans are accounted for as troubled debt restructurings (TDRs). These TDRs, other than FHA-insured loans, are written down to their collateral value less
	cost to sell. FHA-insured loans are reserved for, based on a discounted cash flow model. As a result of implementing this guidance, Citigroup recorded an incremental $635 million of charge-offs in the third quarter of 2012, the vast majority of which related to loans that were current. These charge-offs were substantially offset by a related loan loss reserve release of approximately $600 million, with a net reduction in pretax income of $35 million. In the fourth quarter of 2012, Citigroup recorded a benefit to charge-offs of approximately $40 million related to finalizing the impact of this OCC guidance. Furthermore, as a result of this OCC guidance, TDRs increased by $1.7 billion and non-accrual loans increased by $1.5 billion in the third quarter of 2012 ($1.3 billion of which was current).
	Fair Value Measurement
	In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS. The ASU created a common definition of fair value for GAAP and IFRS and aligned the measurement and disclosure requirements. It required significant additional disclosures both of a qualitative and quantitative nature, particularly for those instruments measured at fair value that are classified in Level 3 of the fair value hierarchy. Additionally, the ASU provided guidance on when it is appropriate to measure fair value on a portfolio basis and expanded the prohibition on valuation adjustments where the size of the Company’s position is a characteristic of the adjustment from Level 1 to all levels of the fair value hierarchy.
	The ASU became effective for Citigroup on January 1, 2012. As a result of implementing the prohibition on valuation adjustments where the size of the Company’s position is a characteristic, the Company released reserves of approximately $125 million, increasing pretax income in the first quarter of 2012.
	Deferred Asset Acquisition Costs
	In October 2010, the FASB issued ASU No. 2010-26, Financial Services-Insurance (Topic 944): Accounting for Costs Associated with Acquiring or Renewing Insurance Contracts. The ASU amended the guidance for insurance entities that required deferral and subsequent amortization of certain costs incurred during the acquisition of new or renewed insurance contracts, commonly referred to as deferred acquisition costs (DAC). The new guidance limited DAC to those costs directly related to the successful acquisition of insurance contracts; all other acquisition-related costs must be expensed as incurred. Under prior guidance, DAC consisted of those costs that vary with, and primarily relate to, the acquisition of insurance contracts.
	The ASU became effective for Citigroup on January 1, 2012 and was adopted using the retrospective method. As a result of implementing the ASU, in the first quarter of 2012, DAC was reduced by approximately $165 million and a $58 million deferred tax asset was recorded with an offset to opening retained earnings of $107 million (net of tax).
	Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure
	In August 2014, the FASB issued ASU No. 2014-14, Receivables-Troubled Debt Restructuring by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure, which requires that a mortgage loan be derecognized and a separate other receivable be recognized upon foreclosure if the following conditions are met: (i) the loan has a government guarantee that is not separable from the loan before foreclosure; (ii) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and (iii) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable is measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor.
	Citi early adopted the ASU on a modified retrospective basis in the fourth quarter of 2014, which resulted in reclassifying approximately $130 million of foreclosed assets from Other Real Estate Owned to a separate other receivable that is included in Other assets. Given the modified retrospective approach to adoption, prior periods have not been restated.
	FUTURE APPLICATION OF ACCOUNTING STANDARDS
	Accounting for Investments in Tax Credit Partnerships
	In January 2014, the FASB issued ASU 2014-01, Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects. Any transition adjustment is reflected as an adjustment to retained earnings in the earliest period presented (retrospective application).
	The ASU is applicable to Citi’s portfolio of low income housing tax credit (LIHTC) partnership interests. The new standard widens the scope of investments eligible to elect to apply a new alternative method, the proportional amortization method, under which the cost of the investment is amortized to tax expense in proportion to the amount of tax credits and other tax benefits received. Citi qualifies to elect the proportional amortization method under the ASU for its entire LIHTC portfolio. These investments are currently accounted for under the equity method, which results in losses (due to amortization of the investment) being recognized in Other revenue and tax credits and benefits being recognized in the Income tax expense line. In contrast, the proportional amortization method combines the amortization of the investment and receipt of the tax credits/benefits into one line, Income tax expense.
	Citi adopted ASU 2014-01 in the first quarter of 2015.
	The adoption of this ASU will reduce Retained earnings by approximately $349 million, Other assets by approximately $178 million, and deferred tax assets by approximately $171 million, each in the first quarter of 2015.
	Revenue Recognition
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in GAAP when it becomes effective on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its financial statements.
	Accounting for Repurchase-to-Maturity Transactions
	In June 2014, the FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The ASU changes the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowed accounting, which is consistent with the accounting for other repurchase agreements. The ASU also requires disclosures about transfers accounted for as sales in transactions that are economically similar to repurchase agreements and about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The ASU’s provisions became effective for Citi from the first quarter of 2015, with the exception of the collateral disclosures which will be effective from the second quarter of 2015. The effect of adopting the ASU is required to be reflected as a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption. Adoption of the ASU did not have a material effect on the Company’s financial statements.
	Measuring the Financial Assets and Liabilities of a Consolidated Collateralized Financial Entity
	In August 2014, the FASB issued ASU No. 2014-13, Consolidation (Topic 810): Measuring the Financial Assets and the Financial Liabilities of a Consolidated Collateralized Financing Entity, which provides two alternative methods for measuring the fair value of a consolidated Collateralized Financing Entity’s (CFE) financial assets and financial liabilities. This election is made separately for each CFE subject to the scope of the ASU. The first method requires the fair value of the financial assets and liabilities to be measured using the requirements of ASC Topic 820, Fair Value Measurements and Disclosures, with any differences between the fair value of the financial assets and financial liabilities being attributed to the CFE and reflected in earnings in the consolidated statement of income. The alternative method requires measuring both the financial assets and financial liabilities using the more observable of the fair value of the assets or liabilities. The alternative method would also take into consideration the carrying value of any beneficial interests of the CFE held by the parent, including those representing compensation for services, and the carrying value of any nonfinancial assets held temporarily. The ASU will be effective for Citi from the first quarter of 2016 and is not expected to have a material effect on the Company.
	Accounting for Derivatives: Hybrid Financial Instruments
	In November 2014, the FASB issued ASU No. 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity. The ASU will require an entity to evaluate the economic characteristics and risks of an entire hybrid financial instrument issued in the form of a share (including the embedded derivative feature) in order to determine whether the nature of the host contract is more akin to debt or equity. Additionally, the ASU clarifies that no single term or feature would necessarily determine the economic characteristics and risks of the host contract; therefore, an entity should use judgment based on an evaluation of all the relevant terms and features.
	This ASU is effective for Citi from the first quarter of 2016 with early adoption permitted. Citi may choose to report the effects of initial adoption as a cumulative-effect adjustment to retained earnings as of January 1, 2016 or apply the guidance retrospectively to all prior periods. The impact of adopting this ASU is not expected to be material to Citi.
	Accounting for Financial Instruments-Credit Losses
	In December 2012, the FASB issued a proposed ASU, Financial Instruments-Credit Losses. This proposed ASU, or exposure draft, was issued for public comment in order to allow stakeholders the opportunity to review the proposal and provide comments to the FASB and does not constitute accounting guidance until a final ASU is issued.
	The exposure draft contains proposed guidance developed by the FASB with the goal of improving financial reporting about expected credit losses on loans, securities and other financial assets held by financial institutions and other organizations. The exposure draft proposes a new accounting model intended to require earlier recognition of credit losses, while also providing additional transparency about credit risk.
	The FASB’s proposed model would utilize an “expected credit loss” measurement objective for the recognition of credit losses for loans, held-to-maturity securities and other receivables at the time the financial asset is originated or acquired and adjusted each period for changes in expected credit losses. For available-for-sale securities where fair value is less than cost, impairment would be recognized in the allowance for credit losses and adjusted each period for changes in credit. This would replace the multiple existing impairment models in GAAP, which generally require that a loss be “incurred” before it is recognized.
	The FASB’s proposed model represents a significant departure from existing GAAP, and may result in material changes to the Company’s accounting for financial instruments. The impact of the FASB’s final ASU on the Company’s financial statements will be assessed when it is issued. The exposure draft does not contain a proposed effective date; this would be included in the final ASU, when issued.
	Consolidation
	In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, which is intended to improve certain areas of consolidation guidance for legal entities such as limited partnerships, limited liability companies, and securitization structures. The ASU will reduce the number of consolidation models. The ASU will be effective on January 1, 2016. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the effect that ASU 2015-02 will have on its Consolidated Financial Statements.

DISCONTINUED_OPERATIONS_AND_SI1

DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS (Tables)	12 Months Ended
	Dec. 31, 2014
Discontinued operations
Summarized financial information for Combined Results of Discontinued Operations	The following is summarized financial information for Credicard, CCA, Egg and previous Discontinued operations for which Citi continues to have minimal residual costs associated with the sales:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	74		$	1,086		$	1,106
	Income (loss) from discontinued operations	$	10		$	(242	)	$	(109	)
	Gain on sale	—			268			(1		)
	Provision (benefit) for income taxes	12			(244		)	(52		)
	Income (loss) from discontinued operations, net of taxes	$	(2	)	$	270		$	(58	)
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash Flows from Discontinued Operations
	In millions of dollars	2014			2013			2012
	Cash flows used in operating activities	$	—		$	154		$	(209	)
	Cash flows from investing activities	—			(207		)	199
	Cash flows from financing activities	—			43			16
	Net cash provided by discontinued operations	$	—		$	(10	)	$	6
Brazil Creditcard
Discontinued operations
Summarized financial information for Combined Results of Discontinued Operations	Summarized financial information for Discontinued operations for Credicard follows:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	69		$	1,012		$	1,045
	Income (loss) from discontinued operations	$	63		$	(48	)	$	110
	Gain on sale	—			206			—
	Provision (benefit) for income taxes	11			(138		)	19
	Income (loss) from discontinued operations, net of taxes	$	52		$	296		$	91
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash Flows from Discontinued Operations
	In millions of dollars	2014			2013			2012
	Cash flows from operating activities	$	—		$	197		$	(205	)
	Cash flows from investing activities	—			(207		)	195
	Cash flows from financing activities	—			—			16
	Net cash provided by discontinued operations	$	—		$	(10	)	$	6
CCA business
Discontinued operations
Summarized financial information for Combined Results of Discontinued Operations	Summarized financial information for Discontinued operations for the operations related to CCA follows:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	—		$	74		$	60
	Income (loss) from discontinued operations	$	(7	)	$	(158	)	$	(123	)
	Gain on sale	—			62			—
	Provision (benefit) for income taxes	(3		)	(30		)	(44		)
	Income (loss) from discontinued operations, net of taxes	$	(4	)	$	(66	)	$	(79	)
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash Flows from Discontinued Operations
	In millions of dollars	2014			2013			2012
	Cash flows from operating activities	$	—		$	(43	)	$	(4	)
	Cash flows from investing activities	—			—			4
	Cash flows from financing activities	—			43			—
	Net cash provided by discontinued operations	$	—		$	—		$	—
Egg Banking PLC
Discontinued operations
Summarized financial information for Combined Results of Discontinued Operations	Summarized financial information for Discontinued operations for the operations related to Egg follows:
	In millions of dollars	2014			2013			2012
	Total revenues, net of interest expense(1)	$	5		$	—		$	1
	Income (loss) from discontinued operations	$	(46	)	$	(62	)	$	(96	)
	Gain (loss) on sale	—			—			(1		)
	Provision (benefit) for income taxes	(16		)	(22		)	(34		)
	Income (loss) from discontinued operations, net of taxes	$	(30	)	$	(40	)	$	(63	)
	-1	Total revenues include gain or loss on sale, if applicable.
	Cash flows from Discontinued operations related to Egg were not material for all periods presented.
Japan Retail Business
Discontinued operations
Summarized financial information for Combined Results of Discontinued Operations	Income before taxes for the period in which the individually significant component was classified as held-for-sale and for all prior periods are as follows:
	In millions of dollars	2014			2013			2012
	Income before taxes	$	(5	)	$	31		$	(4	)
	The following assets and liabilities for the Japan retail banking business were identified and reclassified to held-for-sale within Other assets and Other liabilities on the Consolidated Balance Sheet at December 31, 2014:
	In millions of dollars	December 31, 2014
	Assets
	Cash and deposits with banks	$	151
	Loans (net of allowance of $2 million)	544
	Goodwill	51
	Other assets, advances to/from subs	19,854
	Other assets	66
	Total assets	$	20,666
	Liabilities
	Deposits	$	20,605
	Other liabilities	61
	Total liabilities	$	20,666
Spain Consumer Business
Discontinued operations
Summarized financial information for Combined Results of Discontinued Operations
	In millions of dollars	2014			2013			2012
	Income before taxes	$	373		$	59		$	6
Greece Consumer Business
Discontinued operations
Summarized financial information for Combined Results of Discontinued Operations
	In millions of dollars	2014	2013	2012
	Income before taxes	$133	($113)	$	(258	)

BUSINESS_SEGMENTS_Tables

BUSINESS SEGMENTS (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Information regarding the Company's operations by segment	The following table presents certain information regarding the Company’s continuing operations by segment:
		Revenues,							Provision (benefits)									Income (loss) from									Identifiable assets
		net of interest expense (1)							for income taxes									continuing operations (2)
	In millions of dollars, except identifiable assets in billions	2014		2013		2012			2014			2013			2012			2014			2013			2012			2014		2013
	Global Consumer Banking	$	37,753	$	38,165	$	39,105		$	3,473		$	3,424		$	3,468		$	6,938		$	6,763		$	7,597		$	396	$	405
	Institutional Clients Group	33,267		33,567		30,762			3,729			3,857			2,021			9,521			9,414			7,834			1,020		1,045
	Corporate/Other	47		121		128			(459		)	(282		)	(1,093		)	(5,593		)	(630		)	(1,048		)	329		313
	Total Citicorp	$	71,067	$	71,853	$	69,995		$	6,743		$	6,999		$	4,396		$	10,866		$	15,547		$	14,383		$	1,745	$	1,763
	Citi Holdings	5,815		4,566		(805		)	121			(1,132		)	(4,389		)	(3,366		)	(1,917		)	(6,565		)	98		117
	Total	$	76,882	$	76,419	$	69,190		$	6,864		$	5,867		$	7		$	7,500		$	13,630		$	7,818		$	1,843	$	1,880
	(1)	Includes Citicorp (excluding Corporate/Other) total revenues, net of interest expense, in North America of $32.0 billion, $31.2 billion and $29.9 billion; in EMEA of $10.9 billion, $11.5 billion and $11.5 billion; in Latin America of $13.4 billion, $14.0 billion and $13.5 billion; and in Asia of $14.7 billion, $15.0 billion and $15.0 billion in 2014, 2013, and 2012, respectively.
	(2)	Includes pretax provisions (credits) for credit losses and for benefits and claims in GCB of $6.1 billion, $6.8 billion and $6.2 billion; in ICG of $57 million, $78 million and $276 million; and in Citi Holdings of $1.3 billion, $1.6 billion and $4.9 billion in 2014, 2013, and 2012, respectively.

INTEREST_REVENUE_AND_EXPENSE_T

INTEREST REVENUE AND EXPENSE (Tables)	12 Months Ended
	Dec. 31, 2014
Interest Revenue (Expense), Net [Abstract]
Interest revenue and expense	For the years ended December 31, 2014, 2013 and 2012 Interest revenue and Interest expense consisted of the following:
	In millions of dollars	2014		2013		2012
	Interest revenue
	Loan interest, including fees	$	44,776	$	45,580	$	47,712
	Deposits with banks	959		1,026		1,261
	Federal funds sold and securities borrowed or purchased under agreements to resell	2,366		2,566		3,418
	Investments, including dividends	7,195		6,919		7,525
	Trading account assets(1)	5,880		6,277		6,802
	Other interest	507		602		580
	Total interest revenue	$	61,683	$	62,970	$	67,298
	Interest expense
	Deposits(2)	$	5,692	$	6,236	$	7,690
	Federal funds purchased and securities loaned or sold under agreements to repurchase	1,895		2,339		2,817
	Trading account liabilities(1)	168		169		190
	Short-term borrowings	580		597		727
	Long-term debt	5,355		6,836		9,188
	Total interest expense	$	13,690	$	16,177	$	20,612
	Net interest revenue	$	47,993	$	46,793	$	46,686
	Provision for loan losses	6,828		7,604		10,458
	Net interest revenue after provision for loan losses	$	41,165	$	39,189	$	36,228
	-1	Interest expense on Trading account liabilities of ICG is reported as a reduction of interest revenue from Trading account assets.
	-2	Includes deposit insurance fees and charges of $1,038 million, $1,132 million and $1,262 million for 2014, 2013 and 2012, respectively.

COMMISSIONS_AND_FEES_Tables

COMMISSIONS AND FEES (Tables)	12 Months Ended
	Dec. 31, 2014
Fees and Commissions [Abstract]
Commissions and fees revenues	The following table presents Commissions and fees revenue for the years ended December 31:
	In millions of dollars	2014		2013		2012
	Investment banking	$	3,687	$	3,315	$	2,991
	Trading-related	2,503		2,563		2,331
	Credit cards and bank cards	2,227		2,472		2,775
	Trade and securities services	1,871		1,847		1,733
	Other consumer(1)	885		911		908
	Checking-related	531		551		615
	Corporate finance(2)	531		516		516
	Loan servicing	380		500		313
	Other	417		266		402
	Total commissions and fees	$	13,032	$	12,941	$	12,584
	-1	Primarily consists of fees for investment fund administration and management, third-party collections, commercial demand deposit accounts and certain credit card services.
	-2	Consists primarily of fees earned from structuring and underwriting loan syndications.

PRINCIPAL_TRANSACTIONS_Tables

PRINCIPAL TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2014
Principal Transactions Revenue, Net [Abstract]
Principal transactions revenue	The following table presents principal transactions revenue for the years ended December 31:
	In millions of dollars	2014			2013			2012
	Global Consumer Banking	$	787		$	863		$	808
	Institutional Clients Group	5,908			6,494			4,330
	Corporate/Other	(383		)	(80		)	(189		)
	Subtotal Citicorp	$	6,312		$	7,277		$	4,949
	Citi Holdings	386			25			31
	Total Citigroup	$	6,698		$	7,302		$	4,980
	Interest rate contracts(1)	$	3,657		$	4,055		$	2,380
	Foreign exchange contracts(2)	2,008			2,307			2,493
	Equity contracts(3)	(260		)	319			158
	Commodity and other contracts(4)	590			277			108
	Credit products and derivatives(5)	703			344			(159		)
	Total	$	6,698		$	7,302		$	4,980
	-1	Includes revenues from government securities and corporate debt, municipal securities, mortgage securities and other debt instruments. Also includes spot and forward trading of currencies and exchange-traded and over-the-counter (OTC) currency options, options on fixed income securities, interest rate swaps, currency swaps, swap options, caps and floors, financial futures, OTC options and forward contracts on fixed income securities.
	-2	Includes revenues from foreign exchange spot, forward, option and swap contracts, as well as FX translation gains and losses.
	-3	Includes revenues from common, preferred and convertible preferred stock, convertible corporate debt, equity-linked notes and exchange-traded and OTC equity options and warrants.
	-4	Primarily includes revenues from crude oil, refined oil products, natural gas and other commodities trades.
	-5	Includes revenues from structured credit products.

INCENTIVE_PLANS_Tables

INCENTIVE PLANS (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of the status of unvested stock awards	A summary of the status of unvested stock awards granted as discretionary annual incentive or sign-on and long-term retention awards for the 12 months ended December 31, 2014, is presented below:
	Unvested stock awards	Shares		Weighted-
				average grant
				date fair
				value per share
	Unvested at January 1, 2014	61,136,782		$	39.71
	New awards	17,729,497		49.65
	Canceled awards	(2,194,893	)	41.31
	Vested awards (1)	(26,666,993	)	40.94
	Unvested at December 31, 2014	50,004,393		$	42.52
	-1	The weighted-average fair value of the shares vesting during 2014 was approximately $52.02 per share.
Information with respect to stock option activity under stock option awards	Information with respect to stock option activity under Citigroup’s stock option programs for the years ended December 31, 2014, 2013 and 2012 is as follows:
		2014								2013							2012
		Options		Weighted-			Intrinsic			Options		Weighted-			Intrinsic		Options		Weighted-		Intrinsic
				average			value					average			value				average		value
				exercise			per share					exercise			per share				exercise		per share
				price								price							price
	Outstanding, beginning of period	31,508,106		$	50.72		$	1.39		35,020,397		$	51.2		$	—	37,596,029		$	69.6	$	—
	Forfeited	(28,257	)	40.8			—			(50,914	)	212.35			—		(858,906	)	83.84		—
	Expired	(602,093	)	242.43			—			(86,964	)	528.4			—		(1,716,726	)	438.14		—
	Exercised	(4,363,637	)	40.82			11.37			(3,374,413	)	40.81			9.54		—		—		—
	Outstanding, end of period	26,514,119		$	48		$	6.11		31,508,106		$	50.72		$	1.39	35,020,397		$	51.2	$	—
	Exercisable, end of period	26,514,119								30,662,588							32,973,444
Summary of information about stock options outstanding under stock option programs	The following table summarizes information about stock options outstanding under Citigroup’s stock option programs at December 31, 2014:
				Options outstanding				Options exercisable
	Range of exercise prices	Number		Weighted-average	Weighted-average			Number		Weighted-average
		outstanding		contractual life	exercise price			exercisable		exercise price
				remaining
	$29.70—$49.99 (1)	25,617,659		1.1 years	$	42.87		25,617,659		$	42.87
	$50.00—$99.99	69,956		6.1 years	56.76			69,956		56.76
	$100.00—$199.99	502,416		4.0 years	147.13			502,416		147.13
	$200.00—$299.99	124,088		3.1 years	240.28			124,088		240.28
	$300.00—$399.99	200,000		3.1 years	335.5			200,000		335.5
	Total at December 31, 2014	26,514,119		1.2 years	$	48.02		26,514,119		$	48.02
	-1	A significant portion of the outstanding options are in the $40 to $45 range of exercise prices.
Components of compensation expense relating to stock-basked compensation programs and deferred cash award programs	The following table shows components of compensation expense, relating to the above incentive compensation programs, recorded during 2014, 2013 and 2012:
	In millions of dollars	2014			2013			2012
	Charges for estimated awards to retirement-eligible employees	$	525		$	468		$	444
	Amortization of deferred cash awards, deferred cash stock units and performance stock units	311			323			345
	Immediately vested stock award expense (1)	51			54			60
	Amortization of restricted and deferred stock awards (2)	668			862			864
	Option expense	1			10			99
	Other variable incentive compensation	803			1,076			670
	Profit sharing plan	1			78			246
	Total	$	2,360		$	2,871		$	2,728
	-1	Represents expense for immediately vested stock awards that generally were stock payments in lieu of cash compensation. The expense is generally accrued as cash incentive compensation in the year prior to grant.
	-2	All periods include amortization expense for all unvested awards to non-retirement-eligible employees. Amortization is recognized net of estimated forfeitures of awards.
Schedule of unrecognized compensation cost and future estimated expense on awards in next fiscal year
	In millions of dollars	2015			2016			2017			2018 and beyond(1)			Total(2)
	Awards granted in 2014 and prior:
	Deferred Stock Awards	$357			$204			$92			$6			$659
	Deferred Cash Awards	232			123			51			3			409
	Future expense related to awards already granted	$589			$327			$143			$9			$1,068
	Future expense related to awards granted in 2015(3)	$	400		$	290		$	188		$	164		$	1,042
	Total	$989			$617			$331			$173			$2,110
	-1	Principally 2018.
	-2	$1.8 billion of which is attributable to ICG.
	-3	Refers to awards granted on or about February 16, 2015, as part Citi's discretionary annual incentive awards for services performed in 2014, and 2015 compensation allowances.

RETIREMENT_BENEFITS_Tables

RETIREMENT BENEFITS (Tables)	12 Months Ended
	Dec. 31, 2014
Defined Benefit Plan Disclosure
Retirement Plan and Mortality Projections	At December 31, 2014, the Company adopted the Retirement Plan 2014 (RP-2014) and Mortality Projection 2014(MP-2014) mortality tables for U.S. plans.
		2014	2013
	Mortality
	U.S. plans (1) (2)
	Pension	RP-2014/MP-2014	IRS RP-2000(2014)
	Postretirement	RP-2014/MP-2014	IRS RP-2000(2014)
	-1	The RP-2014 table is the white-collar RP-2014 table, with a 4% increase in rates to reflect the Citigroup-specific mortality experience. The MP-2014 projection scale includes a phase-out of the assumed rates of improvements from 2015 to 2027.
	-2	The IRS mortality table (static version) includes a 7-year projection (from the measurement date) after retirement and 15-year projection (from the measurement date) prior to retirement using Projection Scale AA.
Pension Plans and Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Components of net (benefit) expense	The following table summarizes the components of net (benefit) expense recognized in the Consolidated Statement of Income for the Company’s U.S. qualified and nonqualified pension plans and postretirement plans, and pension and postretirement plans outside the United States, for Significant Plans and All Other Plans, for the years indicated.
		Pension plans																				Postretirement benefit plans
		U.S. plans										Non-U.S. plans										U.S. plans									Non-U.S. plans
	In millions of dollars	2014			2013			2012				2014			2013			2012				2014			2013			2012			2014			2013			2012
	Qualified plans
	Benefits earned during the year	$	6		$	8		$	12			$	178		$	210		$	199			$	—		$	—		$	—		$	15		$	43		$	29
	Interest cost on benefit obligation	541			538			565				376			384			367				33			33			44			120			146			116
	Expected return on plan assets	(878		)	(863		)	(897		)		(384		)	(396		)	(399		)		(1		)	(2		)	(4		)	(121		)	(133		)	(108		)
	Amortization of unrecognized
	Prior service (benefit) cost	(3		)	(4		)	(1		)		1			4			4				—			(1		)	(1		)	(12		)	—			—
	Net actuarial loss	105			104			96				77			95			77				—			—			4			39			45			25
	Curtailment loss (1)	—			21			—				14			4			10				—			—			—			—			—			—
	Settlement (gain) loss (1)	—			—			—				53			13			35				—			—			—			—			(1		)	—
	Special termination benefits (1)	—			—			—				9			8			1				—			—			—			—			—			—
	Net qualified plans (benefit) expense	$	(229	)	$	(196	)	$	(225	)		$	324		$	322		$	294			$	32		$	30		$	43		$	41		$	100		$	62
	Nonqualified plans expense	45			46			42				—			—			—				—			—			—			—			—			—
	Cumulative effect of change in accounting policy(2)	—			(23		)	—				—			—			—				—			—			—			—			3			—
	Total adjusted net (benefit) expense	$	(184	)	$	(173	)	$	(183	)		$	324		$	322		$	294			$	32		$	30		$	43		$	41		$	103		$	62
	-1	Losses due to curtailment, settlement and special termination benefits relate to repositioning actions.
	-2	Cumulative effect of adopting quarterly remeasurement for Significant Plans.
Summary of entity's contributions	The following table summarizes the actual Company contributions for the years ended December 31, 2014 and 2013, as well as estimated expected Company contributions for 2015. Expected contributions are subject to change since contribution decisions are affected by various factors, such as market performance and regulatory requirements.
		Pension plans (1)																				Postretirement plans (1)
		U.S. plans (2)										Non-U.S. plans										U.S. plans									Non-U.S. plans
	In millions of dollars	2015			2014			2013				2015			2014			2013				2015			2014			2013			2015			2014			2013
	Cash contributions paid by the Company	$	—		$	100		$	—			$	86		$	130		$	308			$	—		$	—		$	—		$	77		$	6		$	251
	Benefits paid directly by the Company	60			58			51				47			100			49				63			56			52			6			6			5
	Total Company contributions	$	60		$	158		$	51			$	133		$	230		$	357			$	63		$	56		$	52		$	83		$	12		$	256
	-1	Payments reported for 2015 are expected amounts.
	-2	The U.S. pension plans include benefits paid directly by the Company for the nonqualified pension plans.
Summary of the funded status and amounts recognized in the Consolidated Balance Sheet for the Company's U.S. qualified, non-qualified plans and plans outside the U.S.	The following table summarizes the funded status and amounts recognized in the Consolidated Balance Sheet for the Company’s U.S. qualified and nonqualified pension plans and postretirement plans, and pension and postretirement plans outside the United States.
	Net Amount Recognized
		Pension plans														Postretirement benefit plans
	In millions of dollars	U.S. plans							Non-U.S. plans							U.S. plans							Non-U.S. plans
		2014			2013				2014			2013				2014			2013				2014			2013
	Change in projected benefit obligation
	Qualified plans
	Projected benefit obligation at beginning of year	$	12,137		$	13,268			$	7,194		$	7,399			$	780		$	1,072			$	1,411		$	2,002
	Cumulative effect of change in accounting policy(1)	—			(368		)		—			385				—			—				—			81
	Benefits earned during the year	6			8				178			210				—			—				15			43
	Interest cost on benefit obligation	541			538				376			384				33			33				120			146
	Plan amendments	—			—				2			(28		)		—			—				(14		)	(171		)
	Actuarial (gain) loss(2)	2,077			(671		)		790			(733		)		184			(253		)		262			(617		)
	Benefits paid, net of participants’ contributions	(701		)	(661		)		(352		)	(296		)		(91		)	(85		)		(93		)	(64		)
	Expected government subsidy	—			—				—			—				11			13				—			—
	Divestitures	—			—				(18		)	—				—			—				(1		)	—
	Settlements	—			—				(184		)	(57		)		—			—				—			(2		)
	Curtailment (gain) loss	—			23				(58		)	(2		)		—			—				(3		)	(3		)
	Special/contractual termination benefits	—			—				9			8				—			—				—			—
	Foreign exchange impact and other	—			—				(685		)	(76		)		—			—				(170		)	(4		)
	Qualified plans	$	14,060		$	12,137			$	7,252		$	7,194			$	917		$	780			$	1,527		$	1,411
	Nonqualified plans (3)	779			692				—			—				—			—				—			—
	Projected benefit obligation at year end	$	14,839		$	12,829			$	7,252		$	7,194			$	917		$	780			$	1,527		$	1,411
	-1	Represents the cumulative effect of adopting quarterly remeasurement for Significant Plans.
	-2	2014 amounts for the U.S. plans include impact of the adoption of updated mortality tables (see “Mortality Tables” below).
	-3	These plans are unfunded.
		Pension plans														Postretirement benefit plans
		U.S. plans							Non-U.S. plans							U.S. plans							Non-U.S. plans
	In millions of dollars	2014			2013				2014			2013				2014			2013				2014			2013
	Change in plan assets
	Qualified plans
	Plan assets at fair value at beginning of year	$	12,731		$	12,656			$	6,918		$	7,154			$	32		$	50			$	1,472		$	1,497
	Cumulative effect of change in accounting policy(1)	—			(53		)		—			126				—			3				—			21
	Actual return on plan assets	941			789				1,108			(256		)		2			(1		)		166			(223		)
	Company contributions	100			—				230			357				56			52				12			256
	Plan participants’ contributions	—			—				5			6				51			50				—			—
	Divestitures	—			—				(11		)	—				—			—				—			—
	Settlements	—			—				(184		)	(61		)		—			—				—			—
	Benefits paid	(701		)	(661		)		(357		)	(302		)		(131		)	(122		)		(93		)	(64		)
	Foreign exchange impact and other	—			—				(652		)	(106		)		—			—				(173		)	(15		)
	Qualified plans	$	13,071		$	12,731			$	7,057		$	6,918			$	10		$	32			$	1,384		$	1,472
	Nonqualified plans (2)	—			—				—			—				—			—				—			—
	Plan assets at fair value year end	$	13,071		$	12,731			$	7,057		$	6,918			$	10		$	32			$	1,384		$	1,472
	Funded status of the plans
	Qualified plans(3)	$	(989	)	$	593			$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
	Nonqualified plans (2)	(779		)	(692		)		—			—				—			—				—			—
	Funded status of the plans at year end	$	(1,768	)	$	(99	)		$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
	Net amount recognized
	Qualified plans
	Benefit asset	$	—		$	593			$	921		$	709			$	—		$	—			$	196		$	407
	Benefit liability	(989		)	—				(1,116		)	(985		)		(907		)	(748		)		(339		)	(346		)
	Qualified plans	$	(989	)	$	593			$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
	Nonqualified plans (2)	(779		)	(692		)		—			—				—			—				—			—
	Net amount recognized on the balance sheet	$	(1,768	)	$	(99	)		$	(195	)	$	(276	)		$	(907	)	$	(748	)		$	(143	)	$	61
	Amounts recognized in Accumulated other comprehensive income (loss)
	Qualified plans
	Net transition asset (obligation)	$	—		$	—			$	(1	)	$	(1	)		$	—		$	—			$	—		$	(1	)
	Prior service benefit (cost)	3			7				13			(2		)		—			1				157			173
	Net actuarial gain (loss)	(5,819		)	(3,911		)		(1,690		)	(2,007		)		(56		)	129				(658		)	(555		)
	Qualified plans	$	(5,816	)	$	(3,904	)		$	(1,678	)	$	(2,010	)		$	(56	)	$	130			$	(501	)	$	(383	)
	Nonqualified plans (2)	(325		)	(226		)		—			—				—			—				—			—
	Net amount recognized in equity - pretax	$	(6,141	)	$	(4,130	)		$	(1,678	)	$	(2,010	)		$	(56	)	$	130			$	(501	)	$	(383	)
	Accumulated benefit obligation
	Qualified plans	$	14,050		$	12,122			$	6,699		$	6,652			$	917		$	780			$	1,527		$	1,411
Nonqualified plans (2)	771			668				—			—				—			—				—			—
Accumulated benefit obligation at year end	$	14,821		$	12,790			$	6,699		$	6,652			$	917		$	780			$	1,527		$	1,411
-1	Represents the cumulative effect of adopting quarterly remeasurement for Significant Plans.
-2	These plans are unfunded.
-3	The U.S. qualified pension plan is fully funded under specified Employee Retirement Income Security Act (ERISA) funding rules as of January 1, 2015 and no minimum required funding is expected for 2015.
Change in Accumulated other comprehensive income (loss)	The following table shows the change in Accumulated other comprehensive income (loss) related to Citi’s pension and postretirement benefit plans (for Significant Plans and All Other Plans) for the years indicated.
	In millions of dollars		2014				2013				2012
	Beginning of period balance, net of tax (1) (2)		$	(3,989	)		$	(5,270	)		$	(4,282	)
	Cumulative effect of change in accounting policy(3)		—				(22		)		—
	Actuarial assumptions changes and plan experience (4)		(3,404		)		2,380				(2,400		)
	Net asset gain (loss) due to difference between actual and expected returns		833				(1,084		)		963
	Net amortizations		202				271				214
	Prior service credit		13				360				—
	Curtailment/ settlement loss (5)		67				—				—
	Foreign exchange impact and other		459				74				(155		)
	Change in deferred taxes, net		660				(698		)		390
	Change, net of tax		$	(1,170	)		$	1,281			$	(988	)
	End of period balance, net of tax (1) (2)		$	(5,159	)		$	(3,989	)		$	(5,270	)
	-1	See Note 20 to the Consolidated Financial Statements for further discussion of net Accumulated other comprehensive income (loss) balance.
	-2	Includes net-of-tax amounts for certain profit sharing plans outside the U.S.
	-3	Represents the cumulative effect of adopting quarterly remeasurement for Significant Plans.
	-4	Includes $111 million, $(58) million and $62 million of actuarial losses (gains) related to the U.S. nonqualified pension plans for 2014, 2013 and 2012, respectively.
	-5	Curtailment and settlement losses relate to repositioning actions.
Assumptions used in determining benefit obligations and net benefit expense	Certain assumptions used in determining pension and postretirement benefit obligations and net benefit expense for the Company’s plans are shown in the following table:
	At year end	2014	2013
	Discount rate
	U.S. plans (1)
	Qualified pension	4.00%	4.75%
	Nonqualified pension	3.9	4.75
	Postretirement	3.8	4.35
	Non-U.S. pension plans (2)
	Range	1.00 to 32.50	1.60 to 29.25
	Weighted average	4.74	5.6
	Non-U.S. postretirement plans (2)
	Range	2.25 to 12.00	3.50 to 11.90
	Weighted average	7.5	8.65
	Future compensation increase rate
	U.S. plans (3)	N/A	N/A
	Non-U.S. pension plans
	Range	1.00 to 30.00	1.00 to 26.00
	Weighted average	3.27	3.4
	Expected return on assets
	U.S. plans	7	7
	Non-U.S. pension plans
	Range	1.30 to 11.50	1.20 to 11.50
	Weighted average	5.08	5.68
	Non-U.S. postretirement plans
	Range	8.50 to 10.40	8.50 to 8.90
	Weighted average	8.51	8.5
	-1	Effective April 1, 2013, Citigroup changed to a quarterly remeasurement approach for its Significant Plans, including the U.S. qualified pension and postretirement plans.
	For the U.S. qualified pension and postretirement plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligation and will be used to determine the 2015 first quarter expense. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligation and used for the 2014 first quarter expense.
	For the U.S. nonqualified pension plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligation and will be used to determine the 2015 first quarter expense. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligations and were used to determine the expense for 2014.
	-2	Effective April 1, 2013, Citigroup changed to a quarterly remeasurement approach for its Significant non-U.S. pension and postretirement plans. For the Significant non-U.S. pension and postretirement plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligation and will be used to determine the 2015 first quarter expense. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligation and the 2014 first quarter expense. For all other non-U.S. pension and postretirement plans, the 2014 rates shown above were utilized to calculate the December 31, 2014 benefit obligations and will be used to determine the expense for 2015. The 2013 rates shown above were utilized to calculate the December 31, 2013 benefit obligations and the expense for 2014.
	-3	Since the U.S. qualified pension plan has been frozen, a compensation increase rate applies only to certain small groups of grandfathered employees accruing benefits under a final pay plan formula. Only the future compensation increases for these grandfathered employees will affect future pension expense and obligations. Compensation increase rates for these small groups of participants range from 3.00% to 4.00%.
	During the year	2014	2013
	Discount rate
	U.S. plans (1)
	Qualified pension	4.75%/4.55%/ 4.25%/ 4.25%	3.90%/4.20%/ 4.75%/ 4.80%
	Nonqualified pension	4.75	3.9
	Postretirement	4.35/4.15/3.95/4.00	3.60/3.60/ 4.40/ 4.30
	Non-U.S. pension plans
	Range	1.60 to 29.25	1.50 to 28.00
	Weighted average (2)	5.6	5.24
	Non-U.S. postretirement plans
	Range	3.50 to 11.90	3.50 to 10.00
	Weighted average (2)	8.65	7.46
	Future compensation increase rate
	U.S. plans (3)	N/A	N/A
	Non-U.S. pension plans
	Range	1.00 to 26.00	1.20 to 26.00
	Weighted average (2)	3.4	3.93
	Expected return on assets
	U.S. plans	7	7
	Non-U.S. pension plans
	Range	1.20 to 11.50	0.90 to 11.50
	Weighted average (2)	5.68	5.76
	Non-U.S. postretirement plans
	Range	8.50 to 8.90	8.50 to 9.60
	Weighted average (2)	8.5	8.5
	-1	For the U.S. qualified pension and postretirement plans, the 2014 and 2013 rates shown above were utilized to calculate the expense in each of the respective four quarters in 2014 and 2013, respectively. For the U.S. nonqualified pension plans, the 2014 and 2013 rates shown above were utilized to calculate expense for 2014 and 2013, respectively.
	-2	For the Significant non-U.S. plans, the 2014 and 2013 weighted averages shown above reflect the rates utilized to calculate expense in the first quarters of 2014 and 2013, respectively. For all other non-U.S. plans, the weighted averages shown above reflect the rates utilized to calculate expense for 2014 and 2013, respectively.
	-3	Since the U.S. qualified pension plan has been frozen, a compensation increase rate applies only to certain small groups of grandfathered employees accruing benefits under a final pay plan formula. Only the future compensation increases for these grandfathered employees will affect future pension expense and obligations. Compensation increase rates for these small groups of participants range from 3.00% to 4.00%
Schedule of Expected Benefit Payments	The Company expects to pay the following estimated benefit payments in future years:
		Pension plans								Postretirement benefit plans
	In millions of dollars	U.S. plans				Non-U.S. plans				U.S. plans				Non-U.S. plans
	2015	$	835			$	368			$	73			$	65
	2016	860				339				72				70
	2017	868				366				71				75
	2018	882				383				70				81
	2019	900				413				68				88
	2020—2024	4,731				2,452				317				574
U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Schedule of Expected Long Term Rates of Return on Assets	The following table shows the expected rates of return used in determining the Company’s pension expense compared to the actual rate of return on plan assets during 2014, 2013 and 2012 for the U.S. pension and postretirement plans:
		2014		2013		2012
	Expected rate of return (1)	7	%	7	%	7.5	%
	Actual rate of return (2)	7.8	%	6	%	11	%
	-1	Effective December 31, 2012, the expected rate of return was changed from 7.50% to 7.00%.
	-2	Actual rates of return are presented net of fees.
Schedule of Allocation of Plan Assets	Citigroup’s pension and postretirement plans’ asset allocations for the U.S. plans at December 31, 2014 and 2013 and the target allocations for 2015 by asset category based on asset fair values, are as follows:
		Target asset		U.S. pension assets					U.S. postretirement assets
		allocation		at December 31,					at December 31,
	Asset category (1)	2015		2014		2013			2014		2013
	Equity securities (2)	0 - 30%		20	%	19	%		20	%	19	%
	Debt securities	25 - 73		44		42			44		42
	Real estate	0 - 7		4		5			4		5
	Private equity	0 - 10		8		11			8		11
	Other investments	0 - 22		24		23			24		23
	Total			100	%	100	%		100	%	100	%
	-1	Asset allocations for the U.S. plans are set by investment strategy, not by investment product. For example, private equities with an underlying investment in real estate are classified in the real estate asset category, not private equity.
	-2	Equity securities in the U.S. pension and postretirement plans do not include any Citigroup common stock at the end of 2014 and 2013.
Schedule of Fair Value of Plan Assets by Measurement Levels	Plan assets by detailed asset categories and the fair value hierarchy are as follows:
		U.S. pension and postretirement benefit plans (1)
	In millions of dollars	Fair value measurement at December 31, 2014
	Asset categories	Level 1			Level 2			Level 3			Total
	Equity securities
	U.S. equity	$	773		$	—		$	—		$	773
	Non-U.S. equity	601			—			—			601
	Mutual funds	214			—			—			214
	Commingled funds	—			939			—			939
	Debt securities
	U.S. Treasuries	1,178			—			—			1,178
	U.S. agency	—			113			—			113
	U.S. corporate bonds	—			1,533			—			1,533
	Non-U.S. government debt	—			357			—			357
	Non-U.S. corporate bonds	—			405			—			405
	State and municipal debt	—			132			—			132
	Hedge funds	—			2,462			731			3,193
	Asset-backed securities	—			41			—			41
	Mortgage-backed securities	—			76			—			76
	Annuity contracts	—			—			59			59
	Private equity	—			—			1,631			1,631
	Derivatives	12			637			—			649
	Other investments	—			101			260			361
	Total investments at fair value	$	2,778		$	6,796		$	2,681		$	12,255
	Cash and short-term investments	$	111		$	1,287		$	—		$	1,398
	Other investment receivables	—			28			35			63
	Total assets	$	2,889		$	8,111		$	2,716		$	13,716
	Other investment liabilities	$	(17	)	$	(618	)	$	—		$	(635	)
	Total net assets	$	2,872		$	7,493		$	2,716		$	13,081
	-1	The investments of the U.S. pension and postretirement benefit plans are commingled in one trust. At December 31, 2014, the allocable interests of the U.S. pension and postretirement benefit plans were 99.9% and 0.1%, respectively.
		U.S. pension and postretirement benefit plans (1)
	In millions of dollars	Fair value measurement at December 31, 2013
	Asset categories	Level 1			Level 2			Level 3			Total
	Equity securities
	U.S. equity	$	793		$	—		$	—		$	793
	Non-U.S. equity	442			—			—			442
	Mutual funds	203			—			—			203
	Commingled funds	—			977			—			977
	Debt securities
	U.S. Treasuries	1,112			—			—			1,112
	U.S. agency	—			91			—			91
	U.S. corporate bonds	—			1,387			—			1,387
	Non-U.S. government debt	—			349			—			349
	Non-U.S. corporate bonds	—			398			—			398
	State and municipal debt	—			137			—			137
	Hedge funds	—			2,132			1,126			3,258
	Asset-backed securities	—			61			—			61
	Mortgage-backed securities	—			64			—			64
	Annuity contracts	—			—			91			91
	Private equity	—			—			2,106			2,106
	Derivatives	8			601			—			609
	Other investments	—			29			150			179
	Total investments at fair value	$	2,558		$	6,226		$	3,473		$	12,257
	Cash and short-term investments	$	107		$	957		$	—		$	1,064
	Other investment receivables	—			49			52			101
	Total assets	$	2,665		$	7,232		$	3,525		$	13,422
	Other investment liabilities	$	(9	)	$	(650	)	$	—		$	(659	)
	Total net assets	$	2,656		$	6,582		$	3,525		$	12,763
	-1	The investments of the U.S. pension and postretirement benefit plans are commingled in one trust. At December 31, 2013, the allocable interests of the U.S. pension and postretirement benefit plans were 99.7% and 0.3%, respectively.
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets	The reconciliations of the beginning and ending balances during the year for Level 3 assets are as follows:
	In millions of dollars	U.S. pension and postretirement benefit plans
	Asset categories	Beginning Level 3 fair value at				Realized gains (losses)				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2014
		Dec. 31, 2013
	Hedge funds	$	1,126			$	63			$	(25	)		$	(264	)		$	(169	)		$	731
	Annuity contracts	91				—				(1		)		(31		)		—				59
	Private equity	2,106				241				(187		)		(529		)		—				1,631
	Other investments	150				(1		)		(5		)		109				7				260
	Total investments	$	3,473			$	303			$	(218	)		$	(715	)		$	(162	)		$	2,681
	Other investment receivables	52				—				—				(17		)		—				35
	Total assets	$	3,525			$	303			$	(218	)		$	(732	)		$	(162	)		$	2,716
	In millions of dollars	U.S. pension and postretirement benefit plans
	Asset categories	Beginning Level 3 fair value at				Realized gains (losses)				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2013
		Dec. 31, 2012
	Hedge funds	$	1,524			$	45			$	69			$	19			$	(531	)		$	1,126
	Annuity contracts	130				—				(9		)		(33		)		3				91
	Private equity	2,419				264				(10		)		(564		)		(3		)		2,106
	Other investments	142				—				7				8				(7		)		150
	Total investments	$	4,215			$	309			$	57			$	(570	)		$	(538	)		$	3,473
	Other investment receivables	24				—				—				28				—				52
	Total assets	$	4,239			$	309			$	57			$	(542	)		$	(538	)		$	3,525
Non-U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Schedule of Allocation of Plan Assets	Citigroup’s pension and postretirement plans’ weighted-average asset allocations for the non-U.S. plans and the actual ranges at the end of 2014 and 2013, and the weighted-average target allocations for 2015 by asset category based on asset fair values are as follows:
		Non-U.S. pension plans
		Weighted-average		Actual range			Weighted-average
		target asset allocation		at December 31,			at December 31,
	Asset category (1)	2015		2014	2013		2014		2013
	Equity securities	17%		0 - 67%	0 - 69%		17	%	20	%
	Debt securities	78		0 - 100	0 - 99		77		72
	Real estate	1		0 - 21	0 - 19		—		1
	Other investments	4		0 - 100	0 - 100		6		7
	Total	100%					100	%	100	%
		Non-U.S. postretirement plans
		Weighted-average		Actual range			Weighted-average
		target asset allocation		at December 31,			at December 31,
	Asset category (1)	2015		2014	2013		2014		2013
	Equity securities	41%		0 - 42%	0 - 41%		42	%	41	%
	Debt securities	56		54 - 100	51 - 100		54		51
	Other investments	3		0 - 4	0 - 8		4		8
	Total	100%					100	%	100	%
	-1	Similar to the U.S. plans, asset allocations for certain non-U.S. plans are set by investment strategy, not by investment product.
Schedule of Fair Value of Plan Assets by Measurement Levels
		Non-U.S. pension and postretirement benefit plans
	In millions of dollars	Fair value measurement at December 31, 2014
	Asset categories	Level 1				Level 2				Level 3				Total
	Equity securities
	U.S. equity	$	6			$	15			$	—			$	21
	Non-U.S. equity	86				271				45				402
	Mutual funds	207				3,334				—				3,541
	Commingled funds	10				25				—				35
	Debt securities
	U.S. corporate bonds	—				357				—				357
	Non-U.S. government debt	3,293				246				1				3,540
	Non-U.S. corporate bonds	103				811				5				919
	Hedge funds	—				—				10				10
	Mortgage-backed securities	—				1				—				1
	Annuity contracts	—				1				32				33
	Derivatives	11				—				—				11
	Other investments	7				13				163				183
	Total investments at fair value	$	3,723			$	5,074			$	256			$	9,053
	Cash and short-term investments	$	112			$	2			$	—			$	114
	Total assets	$	3,835			$	5,076			$	256			$	9,167
	Other investment liabilities	$	(3	)		$	(723	)		$	—			$	(726	)
	Total net assets	$	3,832			$	4,353			$	256			$	8,441
		Non-U.S. pension and postretirement benefit plans
	In millions of dollars	Fair value measurement at December 31, 2013
	Asset categories	Level 1				Level 2				Level 3				Total
	Equity securities
	U.S. equity	$	6			$	13			$	—			$	19
	Non-U.S. equity	117				292				49				458
	Mutual funds	257				3,593				—				3,850
	Commingled funds	7				22				—				29
	Debt securities
	U.S. corporate bonds	—				392				—				392
	Non-U.S. government debt	2,547				232				—				2,779
	Non-U.S. corporate bonds	107				780				5				892
	Hedge funds	—				—				11				11
	Mortgage-backed securities	3				1				—				4
	Annuity contracts	—				1				32				33
	Derivatives	42				—				—				42
	Other investments	7				12				202				221
	Total investments at fair value	$	3,093			$	5,338			$	299			$	8,730
	Cash and short-term investments	$	92			$	4			$	—			$	96
	Total assets	$	3,185			$	5,342			$	299			$	8,826
	Other investment liabilities	$	—			$	(436	)		$	—			$	(436	)
	Total net assets	$	3,185			$	4,906			$	299			$	8,390
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets
	In millions of dollars	Non-U.S. pension and postretirement benefit plans
	Asset categories	Beginning Level 3 fair value at Dec. 31, 2013				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2014
	Equity securities
	Non-U.S. equity	$	49			$	(3	)		$	—			$	(1	)		$	45
	Debt securities
	Non-U.S. government debt	—				—				—				1				1
	Non-U.S. corporate bonds	5				—				1				(1		)		5
	Hedge funds	11				(1		)		—				—				10
	Annuity contracts	32				—				—				—				32
	Other investments	202				(1		)		(33		)		(5		)		163
	Total investments	$	299			$	(5	)		$	(32	)		$	(6	)		$	256
	Cash and short-term investments	—				—				—				—				—
	Total assets	$	299			$	(5	)		$	(32	)		$	(6	)		$	256
	In millions of dollars	Non-U.S. pension and postretirement benefit plans
	Asset categories	Beginning Level 3 fair value at Dec. 31, 2012				Unrealized gains (losses)				Purchases, sales, and issuances				Transfers in and/or out of Level 3				Ending Level 3 fair value at Dec. 31, 2013
	Equity securities
	Non-U.S. equity	$	48			$	5			$	—			$	(4	)		$	49
	Debt securities
	Non-U.S. government bonds	4				—				—				(4		)		—
	Non-U.S. corporate bonds	4				(1		)		2				—				5
	Hedge funds	16				1				(6		)		—				11
	Annuity contracts	6				3				(1		)		24				32
	Other investments	219				—				3				(20		)		202
	Total investments	$	297			$	8			$	(2	)		$	(4	)		$	299
	Cash and short-term investments	3				—				—				(3		)		—
	Total assets	$	300			$	8			$	(2	)		$	(7	)		$	299
Pension Plans
Defined Benefit Plan Disclosure
Aggregate projected benefit obligation (PBO), accumulated benefit obligation (ABO), and fair value of plan assets for pension plans with a PBO or ABO that exceeds the fair value of plan assets	At December 31, 2014 and 2013, for both qualified and nonqualified pension plans and for both funded and unfunded plans, the aggregate projected benefit obligation (PBO), the aggregate accumulated benefit obligation (ABO), and the aggregate fair value of plan assets are presented for pension plans with a projected benefit obligation in excess of plan assets and for pension plans with an accumulated benefit obligation in excess of plan assets as follows:
		PBO exceeds fair value of plan assets														ABO exceeds fair value plan assets
		U.S. plans (1)							Non-U.S. plans(2)							U.S. plans (1)							Non-U.S. plans(2)
	In millions of dollars	2014			2013				2014			2013				2014			2013				2014			2013
	Projected benefit obligation	$	14,839		$	692			$	2,756		$	2,765			$	14,839		$	692			$	2,570		$	2,408
	Accumulated benefit obligation	14,821			668				2,353			2,375				14,821			668				2,233			2,090
	Fair value of plan assets	13,071			—				1,640			1,780				13,071			—				1,495			1,468
	-1	At December 31, 2014, for both the U.S. qualified and nonqualified plans, the aggregate PBO and the aggregate ABO exceeded plan assets. At December 31, 2013, assets for the U.S. qualified plan exceeded both the PBO and ABO. The U.S. nonqualified plans are not funded and thus the PBO and ABO exceeded plan assets as of this date.
	-2	At December 31, 2014, the aggregate PBO and the aggregate ABO exceeded the aggregate plan assets for non-U.S. plans. Assets for certain non-U.S. plans exceed both the PBO and ABO and, as such, only the aggregate PBO, ABO, and asset values for underfunded non-U.S. plans are presented in the table above.
Effect of one-percentage-point change in the discount rates on pension expense	The following tables summarize the effect on pension expense of a one-percentage-point change in the discount rate:
			One-percentage-point increase
	In millions of dollars		2014				2013				2012
	U.S. plans		$	28			$	16			$	18
	Non-U.S. plans		(39		)		(52		)		(48		)
			One-percentage-point decrease
	In millions of dollars		2014				2013				2012
	U.S. plans		$	(45	)		$	(57	)		$	(36	)
	Non-U.S. plans		56				79				64
Schedule of Effect of One Percentage Point Change in Expected Rates of Return	The following tables summarize the effect on pension expense of a one-percentage-point change in the expected rates of return:
			One-percentage-point increase
	In millions of dollars		2014				2013				2012
	U.S. plans		$	(129	)		$	(123	)		$	(120	)
	Non-U.S. plans		(67		)		(68		)		(64		)
			One-percentage-point decrease
	In millions of dollars		2014				2013				2012
	U.S. plans		$	129			$	123			$	120
	Non-U.S. plans		67				68				64
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates	A one-percentage-point change in assumed health care cost-trend rates would have the following effects:
		One-percentage-							One-
		point increase							percentage-
									point decrease
	In millions of dollars	2014			2013				2014			2013
	Effect on benefits earned and interest cost for U.S. postretirement plans	$	2		$	1			$	(1	)	$	(1	)
	Effect on accumulated postretirement benefit obligation for U.S. postretirement plans	40			24				(34		)	(19		)
		One-percentage-							One-
		point increase							percentage-
									point decrease
	In millions of dollars	2014			2013				2014			2013
	Effect on benefits earned and interest cost for non-U.S. postretirement plans	$	17		$	37			$	(14	)	$	(29	)
	Effect on accumulated postretirement benefit obligation for non-U.S. postretirement plans	197			181				(161		)	(137		)
U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Schedule of Health Care Cost Trend Rates	Assumed health care cost-trend rates were as follows:
		2014	2013
	Health care cost increase rate for
	U.S. plans
	Following year	7.50%	8.00%
	Ultimate rate to which cost increase is assumed to decline	5	5
	Year in which the ultimate rate is reached(1)	2020	2020
	-1	Weighted average for plans with different following year and ultimate rates.
Schedule of Expected Benefit Payments	The following table shows the estimated future benefit payments without the effect of the subsidy and the amounts of the expected subsidy in future years:
		Expected U.S.
		postretirement benefit payments
	In millions of	Before			Medicare			After Medicare
	dolalrs	Medicare			Part D subsidy			Part D subsidy
		Part D subsidy
	2015	$	73		$	—		$	73
	2016	72			—			72
	2017	71			—			71
	2018	70			—			70
	2019	68			—			68
	2020—2024	319			2			317
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Schedule of Health Care Cost Trend Rates
		2014	2013
	Health care cost increase rate for
	Non-U.S. plans (weighted average)
	Following year	6.94%	6.95%
	Ultimate rate to which cost increase is assumed to decline	6.93	6.94
	Year in which the ultimate rate is reached	2027	2029
Postemployment Plans
Defined Benefit Plan Disclosure
Components of net (benefit) expense	The following table summarizes the components of net expense recognized in the Consolidated Statement of Income for the Company’s U.S. postemployment plans.
		Net expense
	In millions of dollars	2014				2013				2012
	Service related expense
	Service cost	$	—			$	20			$	22
	Interest cost	5				10				13
	Prior service cost (benefit)	(31		)		(3		)		7
	Net actuarial loss	14				17				13
	Total service related expense	$	(12	)		$	44			$	55
	Non-service related expense (benefit)	$	37			$	(14	)		$	24
	Total net expense	$	25			$	30			$	79
Assumptions used in determining benefit obligations and net benefit expense	The following table summarizes certain assumptions used in determining the postemployment benefit obligations and net benefit expenses for the Company’s U.S. postemployment plans.
		2014	2013
	Discount rate	3.45%	4.05%
	Health care cost increase rate
	Following year	7.50%	8.00%
	Ultimate rate to which cost increase is assumed to decline	5	5
	Year in which the ultimate rate is reached	2020	2020

INCOME_TAXES_Tables

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of components of income tax provision	Details of the Company’s income tax provision for the years ended December 31 are presented in the table below:
	Income Taxes
	In millions of dollars	2014			2013			2012
	Current
	Federal	$	181		$	(260	)	$	(71	)
	Foreign	3,281			3,788			3,869
	State	388			(41		)	300
	Total current income taxes	$	3,850		$	3,487		$	4,098
	Deferred
	Federal	$	2,184		$	2,550		$	(4,943	)
	Foreign	361			(716		)	900
	State	469			546			(48		)
	Total deferred income taxes	$	3,014		$	2,380		$	(4,091	)
	Provision (benefit) for income tax on continuing operations before non-controlling interests (1)	$	6,864		$	5,867		$	7
	Provision (benefit) for income taxes on discontinued operations	12			(244		)	(52		)
	Provision (benefit) for income taxes on cumulative effect of accounting changes	—			—			(58		)
	Income tax expense (benefit) reported in stockholders’ equity related to:
	Foreign currency translation	65			(48		)	(709		)
	Investment securities	1,007			(1,300		)	369
	Employee stock plans	(87		)	28			265
	Cash flow hedges	207			625			311
	Benefit plans	(660		)	698			(390		)
	Retained earnings(2)	(353		)	—			—
	Income taxes before non-controlling interests	$	7,055		$	5,626		$	(257	)
	-1	Includes the effect of securities transactions and other-than-temporary-impairment losses resulting in a provision (benefit) of $200 million and $(148) million in 2014, $262 million and $(187) million in 2013 and $1,138 million and $(1,740) million in 2012, respectively.
	-2	See “Consolidated Statement of Changes in Stockholders’ Equity” above.
Schedule of effective income tax rate reconciliation	The reconciliation of the federal statutory income tax rate to the Company’s effective income tax rate applicable to income from continuing operations (before non-controlling interests and the cumulative effect of accounting changes) for the years ended December 31 was as follows:
		2014		2013		2012
	Federal statutory rate	35	%	35	%	35	%
	State income taxes, net of federal benefit	3.5		1.7		3
	Foreign income tax rate differential	(0.9	)	(2.2	)	(4.6	)
	Audit settlements (1)	(2.4	)	(0.6	)	(11.8	)
	Effect of tax law changes(2)	1.2		(0.3	)	(0.1	)
	Nondeductible legal and related expenses	18.7		0.8		0.2
	Basis difference in affiliates	(2.5	)	—		(9.2	)
	Tax advantaged investments	(5.2	)	(4.2	)	(12.4	)
	Other, net	0.4		(0.1	)	—
	Effective income tax rate	47.8	%	30.1	%	0.1	%
	-1	For 2014, relates to the conclusion of the audit of various issues in the Company’s 2009-2011 U.S. federal tax audit and the conclusion of a New York State tax audit for 2006-2008. For 2013, relates to the settlement of U.S. federal issues for 2003-2005 at IRS appeals. For 2012, relates to the conclusion of the audit of various issues in the Company’s 2006-2008 U.S. federal tax audits and the conclusion of a New York City tax audit for 2006-2008.
	-2	For 2014, includes the results of corporate tax reforms enacted in New York and South Dakota which resulted in a DTA charge of approximately $210 million.
Schedule of deferred tax assets and liabilities	Deferred income taxes at December 31 related to the following:
	In millions of dollars	2014			2013
	Deferred tax assets
	Credit loss deduction	$	7,010		$	8,356
	Deferred compensation and employee benefits	4,676			4,067
	Restructuring and settlement reserves	1,599			1,806
	Unremitted foreign earnings	6,368			6,910
	Investment and loan basis differences	4,979			4,409
	Cash flow hedges	529			736
	Tax credit and net operating loss carry-forwards	23,395			26,097
	Fixed assets and leases	2,093			666
	Other deferred tax assets	2,334			2,734
	Gross deferred tax assets	$	52,983		$	55,781
	Valuation allowance	—			—
	Deferred tax assets after valuation allowance	$	52,983		$	55,781
	Deferred tax liabilities
	Deferred policy acquisition costs and value of insurance in force	$	(415	)	$	(455	)
	Intangibles	(1,636		)	(1,076		)
	Debt issuances	(866		)	(811		)
	Other deferred tax liabilities	(559		)	(640		)
	Gross deferred tax liabilities	$	(3,476	)	$	(2,982	)
	Net deferred tax assets	$	49,507		$	52,799
Summary of unrecognized tax benefits	The following is a roll-forward of the Company’s unrecognized tax benefits.
	In millions of dollars	2014			2013			2012
	Total unrecognized tax benefits at January 1	$	1,574		$	3,109		$	3,923
	Net amount of increases for current year’s tax positions	135			58			136
	Gross amount of increases for prior years’ tax positions	175			251			345
	Gross amount of decreases for prior years’ tax positions	(772		)	(716		)	(1,246		)
	Amounts of decreases relating to settlements	(28		)	(1,115		)	(44		)
	Reductions due to lapse of statutes of limitation	(30		)	(15		)	(3		)
	Foreign exchange, acquisitions and dispositions	6			2			(2		)
	Total unrecognized tax benefits at December 31	$	1,060		$	1,574		$	3,109
Schedule of income tax penalties and interest accrued	Interest and penalties (not included in “unrecognized tax benefits” above) are a component of the Provision for income taxes.
		2014						2013						2012
	In millions of dollars	Pretax			Net of tax			Pretax			Net of tax			Pretax		Net of tax
	Total interest and penalties in the Consolidated Balance Sheet at January 1	$	277		$	173		$	492		$	315		$	404	$	261
	Total interest and penalties in the Consolidated Statement of Income	(1		)	(1		)	(108		)	(72		)	114		71
	Total interest and penalties in the Consolidated Balance Sheet at December 31 (1)	269			169			277			173			492		315
	-1	Includes $2 million, $2 million, and $10 million for foreign penalties in 2014, 2013 and 2012, respectively. Also includes $3 million for state penalties in 2014, and $4 million for 2013 and 2012.
Schedule of major jurisdictions and earliest tax year subject to examination	The following are the major tax jurisdictions in which the Company and its affiliates operate and the earliest tax year subject to examination:
	Jurisdiction	Tax year
	United States	2012
	Mexico	2009
	New York State and City	2006
	United Kingdom	2013
	India	2010
	Brazil	2010
	Singapore	2007
	Hong Kong	2008
	Ireland	2010
Schedule of deferred tax assets and liabilities by jurisdiction	As of December 31, 2014 and 2013, Citi had no valuation allowance on its DTAs.
	In billions of dollars
	Jurisdiction/component	DTAs balance December 31, 2014			DTAs balance December 31, 2013
	U.S. federal (1)
	Net operating losses (NOLs)(2)	$	2.3		$	1.4
	Foreign tax credits (FTCs)(3)	17.6			19.6
	General business credits (GBCs)	1.6			2.5
	Future tax deductions and credits	21.3			21.5
	Total U.S. federal	$	42.8		$	45
	State and local
	New York NOLs	$	1.5		$	1.4
	Other state NOLs	0.4			0.5
	Future tax deductions	2			2.4
	Total state and local	$	3.9		$	4.3
	Foreign
	APB 23 subsidiary NOLs	$	0.2		$	0.2
	Non-APB 23 subsidiary NOLs	0.5			1.2
	Future tax deductions	2.1			2.1
	Total foreign	$	2.8		$	3.5
	Total	$	49.5		$	52.8
	-1	Included in the net U.S. federal DTAs of $42.8 billion as of December 31, 2014 were deferred tax liabilities of $2 billion that will reverse in the relevant carry-forward period and may be used to support the DTAs.
	-2	Includes $0.6 billion in both 2014 and 2013 of NOL carry-forwards related to non-consolidated tax return companies that are expected to be utilized separately from Citigroup’s consolidated tax return, and $1.7 billion and $0.8 billion of non-consolidated tax return NOL carry-forwards for 2014 and 2013, respectively, that are eventually expected to be utilized in Citigroup’s consolidated tax return.
	-3	Includes $1.0 billion and $0.7 billion for 2014 and 2013, respectively, of non-consolidated tax return FTC carry-forwards that are eventually expected to be utilized in Citigroup’s consolidated tax return.
Summary of tax carryforwards	The following table summarizes the amounts of tax carry-forwards and their expiration dates as of December 31, 2014 and 2013:
	In billions of dollars
	Year of expiration	31-Dec-14			December 31, 2013
	U.S. tax return foreign tax credit carry-forwards
	2017	$	1.9		$	4.7
	2018	5.2			5.2
	2019	1.2			1.2
	2020	3.1			3.1
	2021	1.8			1.4
	2022	3.4			3.3
	2023(1)	1			0.7
	Total U.S. tax return foreign tax credit carry-forwards	$	17.6		$	19.6
	U.S. tax return general business credit carry-forwards
	2028	$	—		$	0.4
	2029	—			0.4
	2030	0.4			0.4
	2031	0.3			0.4
	2032	0.4			0.5
	2033	0.3			0.4
	2034	0.2			—
	Total U.S. tax return general business credit carry-forwards	$	1.6		$	2.5
	U.S. subsidiary separate federal NOL carry-forwards
	2027	$	0.2		$	0.2
	2028	0.1			0.1
	2030	0.3			0.3
	2031	1.7			1.7
	2033	1.9			1.7
	2034	2.3			—
	Total U.S. subsidiary separate federal NOL carry-forwards (2)	$	6.5		$	4
	New York State NOL carry-forwards
	2027	$	—		$	0.1
	2028	—			6.5
	2030	—			2
	2031	—			0.1
	2032	—			0.9
	2033	—			—
	2034	12.3			—
	Total New York State NOL carry-forwards (2)	$	12.3		$	9.6
	New York City NOL carry-forwards
	2027	$	—		$	0.1
	2028	3.8			3.9
	2029	—			1.5
	2031	0.1			—
	2032	0.5			0.6
	Total New York City NOL carry-forwards (2)	$	4.4		$	6.1
	APB 23 subsidiary NOL carry-forwards
	Various	$	0.2		$	0.2
	Total APB 23 subsidiary NOL carry-forwards	$	0.2		$	0.2
	-1	The $1.0 billion in FTC carry-forwards that expires in 2023 is in a non-consolidated tax return entity but is eventually expected to be utilized in Citigroup’s consolidated tax return.
	-2	Pretax.

EARNINGS_PER_SHARE_Tables

EARNINGS PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Reconciliation of the income and share data used in the basic and diluted earnings per share computations	The following is a reconciliation of the income and share data used in the basic and diluted earnings per share (EPS) computations for the years ended December 31:
	In millions, except per-share amounts	2014			2013		2012
	Income from continuing operations before attribution of noncontrolling interests	$	7,500		$	13,630	$	7,818
	Less: Noncontrolling interests from continuing operations	185			227		219
	Net income from continuing operations (for EPS purposes)	$	7,315		$	13,403	$	7,599
	Income (loss) from discontinued operations, net of taxes	(2		)	270		(58		)
	Citigroup's net income	$	7,313		$	13,673	$	7,541
	Less: Preferred dividends(1)	511			194		26
	Net income available to common shareholders	$	6,802		$	13,479	$	7,515
	Less: Dividends and undistributed earnings allocated to employee restricted and deferred shares with nonforfeitable rights to dividends, applicable to basic EPS	111			263		166
	Net income allocated to common shareholders for basic EPS	$	6,691		$	13,216	$	7,349
	Add: Interest expense, net of tax, and dividends on convertible securities and adjustment of undistributed earnings allocated to employee restricted and deferred shares with nonforfeitable rights to dividends, applicable to diluted EPS	—			1		11
	Net income allocated to common shareholders for diluted EPS	$	6,691		$	13,217	$	7,360
	Weighted-average common shares outstanding applicable to basic EPS	3,031.60			3,035.80		2,930.60
	Effect of dilutive securities
	T-DECs(2)	—			—		84.2
	Options(3)	5.1			5.3		—
	Other employee plans	0.3			0.5		0.6
	Convertible securities(4)	—			—		0.1
	Adjusted weighted-average common shares outstanding applicable to diluted EPS	3,037.00			3,041.60		3,015.50
	Basic earnings per share(5)
	Income from continuing operations	$	2.21		$	4.27	$	2.53
	Discontinued operations	—			0.09		(0.02		)
	Net income	$	2.21		$	4.35	$	2.51
	Diluted earnings per share(5)
	Income from continuing operations	$	2.2		$	4.26	$	2.46
	Discontinued operations	—			0.09		(0.02		)
	Net income	$	2.2		$	4.35	$	2.44
	-1	See Note 21 to the Consolidated Financial Statements for the potential future impact of preferred stock dividends.
	-2	Pursuant to the terms of Citi’s previously outstanding Tangible Dividend Enhanced Common Stock Securities (T-DECs), on December 17, 2012, the Company delivered 96,337,772 shares of Citigroup common stock for the final settlement of the prepaid stock purchase contract. The impact of the T-DECs is fully reflected in the basic shares for 2013 and diluted shares for 2012.
	-3	During 2014, 2013 and 2012, weighted-average options to purchase 2.8 million, 4.8 million and 35.8 million shares of common stock, respectively, were outstanding but not included in the computation of earnings per share because the weighted-average exercise prices of $153.91, $101.11 and $54.23 respectively, were anti-dilutive.
	-4	Warrants issued to the U.S. Treasury as part of the Troubled Asset Relief Program (TARP) and the loss-sharing agreement (all of which were subsequently sold to the public in January 2011), with an exercise price of $178.50 and $106.10 for approximately 21.0 million and 25.5 million shares of Citigroup common stock, respectively. Both warrants were not included in the computation of earnings per share in 2014, 2013 and 2012 because they were anti-dilutive.
	-5	Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.

FEDERAL_FUNDS_SECURITIES_BORRO1

FEDERAL FUNDS, SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS (Tables)	12 Months Ended
	Dec. 31, 2014
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	Federal funds sold and securities borrowed or purchased under agreements to resell, at their respective carrying values, consisted of the following at December 31:
	In millions of dollars	2014		2013
	Federal funds sold	$	—	$	20
	Securities purchased under agreements to resell	123,979		136,649
	Deposits paid for securities borrowed	118,591		120,368
	Total	$	242,570	$	257,037
Federal funds purchased and securities loaned or sold under agreements to repurchase	Federal funds purchased and securities loaned or sold under agreements to repurchase, at their respective carrying values, consisted of the following at December 31:
	In millions of dollars	2014		2013
	Federal funds purchased	$	334	$	910
	Securities sold under agreements to repurchase	147,204		175,691
	Deposits received for securities loaned	25,900		26,911
	Total	$	173,438	$	203,512
Schedule of gross and net resale agreements and securities borrowing agreements and the related offsetting amount permitted as well as not permitted under ASC 210-20-45	The following tables present the gross and net resale and repurchase agreements and securities borrowing and lending
	agreements and the related offsetting amount permitted under ASC 210-20-45, as of December 31, 2014 and December 31, 2013. The tables also include amounts related to financial instruments that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent that an event of default occurred and a legal opinion supporting enforceability of the offsetting rights has been obtained. Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.
		As of December 31, 2014
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		assets included on		not offset on the		amounts(4)
		assets		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities purchased under agreements to resell	$	180,318	$	56,339	$	123,979	$	94,353	$	29,626
	Deposits paid for securities borrowed	118,591		—		118,591		15,139		103,452
	Total	$	298,909	$	56,339	$	242,570	$	109,492	$	133,078
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		liabilities included on		not offset on the		amounts(4)
		liabilities		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities sold under agreements to repurchase	$	203,543	$	56,339	$	147,204	$	72,928	$	74,276
	Deposits received for securities loaned	25,900		—		25,900		5,190		20,710
	Total	$	229,443	$	56,339	$	173,104	$	78,118	$	94,986
		As of December 31, 2013
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		assets included on		not offset on the		amounts(4)
		assets		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities purchased under agreements to resell	$	179,894	$	43,245	$	136,649	$	105,226	$	31,423
	Deposits paid for securities borrowed	120,368		—		120,368		26,728		93,640
	Total	$	300,262	$	43,245	$	257,017	$	131,954	$	125,063
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		liabilities included on		not offset on the		amounts(4)
		liabilities		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities sold under agreements to repurchase	$	218,936	$	43,245	$	175,691	$	80,082	$	95,609
	Deposits received for securities loaned	26,911		—		26,911		3,833		23,078
	Total	$	245,847	$	43,245	$	202,602	$	83,915	$	118,687
	-1	Includes financial instruments subject to enforceable master netting agreements that are permitted to be offset under ASC 210-20-45.
	-2	The total of this column for each period excludes Federal funds sold/purchased. See table above.
	-3	Includes financial instruments subject to enforceable master netting agreements that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent that an event of default has occurred and a legal opinion supporting enforceability of the offsetting right has been obtained.
	-4	Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.
Schedule of gross and net repurchase agreements and securities lending agreements and the related offsetting amount permitted as well as not permitted under ASC 210-20-45	The following tables present the gross and net resale and repurchase agreements and securities borrowing and lending
	agreements and the related offsetting amount permitted under ASC 210-20-45, as of December 31, 2014 and December 31, 2013. The tables also include amounts related to financial instruments that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent that an event of default occurred and a legal opinion supporting enforceability of the offsetting rights has been obtained. Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.
		As of December 31, 2014
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		assets included on		not offset on the		amounts(4)
		assets		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities purchased under agreements to resell	$	180,318	$	56,339	$	123,979	$	94,353	$	29,626
	Deposits paid for securities borrowed	118,591		—		118,591		15,139		103,452
	Total	$	298,909	$	56,339	$	242,570	$	109,492	$	133,078
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		liabilities included on		not offset on the		amounts(4)
		liabilities		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities sold under agreements to repurchase	$	203,543	$	56,339	$	147,204	$	72,928	$	74,276
	Deposits received for securities loaned	25,900		—		25,900		5,190		20,710
	Total	$	229,443	$	56,339	$	173,104	$	78,118	$	94,986
		As of December 31, 2013
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		assets included on		not offset on the		amounts(4)
		assets		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities purchased under agreements to resell	$	179,894	$	43,245	$	136,649	$	105,226	$	31,423
	Deposits paid for securities borrowed	120,368		—		120,368		26,728		93,640
	Total	$	300,262	$	43,245	$	257,017	$	131,954	$	125,063
	In millions of dollars	Gross amounts		Gross amounts		Net amounts of		Amounts		Net
		of recognized		offset on the		liabilities included on		not offset on the		amounts(4)
		liabilities		Consolidated		the Consolidated		Consolidated Balance
				Balance Sheet(1)		Balance Sheet(2)		Sheet but eligible for
								offsetting upon
								counterparty default(3)
	Securities sold under agreements to repurchase	$	218,936	$	43,245	$	175,691	$	80,082	$	95,609
	Deposits received for securities loaned	26,911		—		26,911		3,833		23,078
	Total	$	245,847	$	43,245	$	202,602	$	83,915	$	118,687
	-1	Includes financial instruments subject to enforceable master netting agreements that are permitted to be offset under ASC 210-20-45.
	-2	The total of this column for each period excludes Federal funds sold/purchased. See table above.
	-3	Includes financial instruments subject to enforceable master netting agreements that are not permitted to be offset under ASC 210-20-45 but would be eligible for offsetting to the extent that an event of default has occurred and a legal opinion supporting enforceability of the offsetting right has been obtained.
	-4	Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.

BROKERAGE_RECEIVABLES_AND_BROK1

BROKERAGE RECEIVABLES AND BROKERAGE PAYABLES (Tables)	12 Months Ended
	Dec. 31, 2014
Brokers and Dealers [Abstract]
Brokerage receivables and Brokerage payables	Brokerage receivables and Brokerage payables consisted of the following at December 31:
	In millions of dollars	2014		2013
	Receivables from customers	$	10,380	$	5,811
	Receivables from brokers, dealers, and clearing organizations	18,039		19,863
	Total brokerage receivables (1)	$	28,419	$	25,674
	Payables to customers	$	33,984	$	34,751
	Payables to brokers, dealers, and clearing organizations	18,196		18,956
	Total brokerage payables (1)	$	52,180	$	53,707
	-1	Brokerage receivables and payables are accounted for in accordance with ASC 940-320.

TRADING_ACCOUNT_ASSETS_AND_LIA1

TRADING ACCOUNT ASSETS AND LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2014
Trading Securities [Abstract]
Trading account assets and liabilities	Trading account assets and Trading account liabilities are carried at fair value, other than physical commodities accounted for at the lower of cost or fair value, and consist of the following at December 31, 2014 and 2013:
	In millions of dollars	2014		2013
	Trading account assets
	Mortgage-backed securities(1)
	U.S. government-sponsored agency guaranteed	$	27,053	$	23,955
	Prime	1,271		1,422
	Alt-A	709		721
	Subprime	1,382		1,211
	Non-U.S. residential	1,476		723
	Commercial	4,343		2,574
	Total mortgage-backed securities	$	36,234	$	30,606
	U.S. Treasury and federal agency securities
	U.S. Treasury	$	18,906	$	13,537
	Agency obligations	1,568		1,300
	Total U.S. Treasury and federal agency securities	$	20,474	$	14,837
	State and municipal securities	$	3,402	$	3,207
	Foreign government securities	66,274		74,856
	Corporate	26,460		30,534
	Derivatives(2)	67,957		52,821
	Equity securities	57,846		61,776
	Asset-backed securities(1)	4,546		5,616
	Other trading assets(3)	13,593		11,675
	Total trading account assets	$	296,786	$	285,928
	Trading account liabilities
	Securities sold, not yet purchased	$	70,944	$	61,508
	Derivatives(2)	68,092		47,254
	Total trading account liabilities	$	139,036	$	108,762
	-1	The Company invests in mortgage-backed and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. For mortgage-backed and asset-backed securitizations in which the Company has other involvement, see Note 22 to the Consolidated Financial Statements.
	-2	Presented net, pursuant to enforceable master netting agreements. See Note 23 to the Consolidated Financial Statements for a discussion regarding the accounting and reporting for derivatives.
	-3	Includes investments in unallocated precious metals, as discussed in Note 26 to the Consolidated Financial Statements. Also includes physical commodities accounted for at the lower of cost or fair value.

INVESTMENTS_Tables

INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2014
Schedule of Investments disclosures
Schedule of Investments
		December 31,
	In millions of dollars	2014			2013
	Securities available-for-sale (AFS)	$	300,143		$	286,511
	Debt securities held-to-maturity (HTM)(1)	23,921			10,599
	Non-marketable equity securities carried at fair value(2)	2,758			4,705
	Non-marketable equity securities carried at cost(3)	6,621			7,165
	Total investments	$	333,443		$	308,980
	-1	Carried at amortized cost basis, including any impairment for securities that have credit-related impairment.
	-2	Unrealized gains and losses for non-marketable equity securities carried at fair value are recognized in earnings.
	-3	Primarily consists of shares issued by the Federal Reserve Bank, Federal Home Loan Banks, foreign central banks and various clearing houses of which Citigroup is a member.
Interest and dividends on investments	The following table presents interest and dividends on investments for the years ended December 31, 2014, 2013 and 2012:
	In millions of dollars	2014			2013			2012
	Taxable interest	$	6,311		$	5,750		$	6,509
	Interest exempt from U.S. federal income tax	439			732			683
	Dividends	445			437			333
	Total interest and dividends	$	7,195		$	6,919		$	7,525
Realized gains and losses on investments	The following table presents realized gains and losses on the sale of investments for the years ended December 31, 2014, 2013 and 2012. The gross realized investment losses exclude losses from other-than-temporary impairment (OTTI):
	In millions of dollars	2014			2013			2012
	Gross realized investment gains	$	1,020		$	1,606		$	3,663
	Gross realized investment losses	(450		)	(858		)	(412		)
	Net realized gains on sale of investments	$	570		$	748		$	3,251
Schedule of gain (loss) on HTM securities sold, securities reclassified to AFS and OTTI recorded on AFS securities reclassified	The following table sets forth, for the periods indicated, gain (loss) on HTM securities sold, securities reclassified to AFS and OTTI recorded on AFS securities reclassified.
	In millions of dollars	2014			2013			2012
	Carrying value of HTM securities sold	$	8		$	935		$	2,110
	Net realized gain (loss) on sale of HTM securities	—			(128		)	(187		)
	Carrying value of securities reclassified to AFS	889			989			244
	OTTI losses on securities reclassified to AFS	(25		)	(156		)	(59		)
Amortized cost and fair value of AFS	The amortized cost and fair value of AFS securities at December 31, 2014 and 2013 were as follows:
		2014												2013
	In millions of dollars	Amortized			Gross			Gross			Fair			Amortized			Gross		Gross		Fair
		cost			unrealized			unrealized			value			cost			unrealized		unrealized		value
					gains(1)			losses(1)									gains(1)		losses(1)
	Debt securities AFS
	Mortgage-backed securities(2)
	U.S. government-sponsored agency guaranteed	$	35,647		$	603		$	159		$	36,091		$	42,494		$	391	$	888	$	41,997
	Prime	12			—			—			12			33			2		3		32
	Alt-A	43			1			—			44			84			10		—		94
	Subprime	—			—			—			—			12			—		—		12
	Non-U.S. residential	8,247			67			7			8,307			9,976			95		4		10,067
	Commercial	551			6			3			554			455			6		8		453
	Total mortgage-backed securities	$	44,500		$	677		$	169		$	45,008		$	53,054		$	504	$	903	$	52,655
	U.S. Treasury and federal agency securities
	U.S. Treasury	$	110,492		$	353		$	127		$	110,718		$	68,891		$	476	$	147	$	69,220
	Agency obligations	12,925			60			13			12,972			18,320			123		67		18,376
	Total U.S. Treasury and federal agency securities	$	123,417		$	413		$	140		$	123,690		$	87,211		$	599	$	214	$	87,596
	State and municipal(3)	$	13,526		$	150		$	977		$	12,699		$	20,761		$	184	$	2,005	$	18,940
	Foreign government	90,249			734			286			90,697			96,608			403		540		96,471
	Corporate	12,033			215			91			12,157			11,039			210		119		11,130
	Asset-backed securities(2)	12,534			30			58			12,506			15,352			42		120		15,274
	Other debt securities	661			—			—			661			710			1		—		711
	Total debt securities AFS	$	296,920		$	2,219		$	1,721		$	297,418		$	284,735		$	1,943	$	3,901	$	282,777
	Marketable equity securities AFS	$	2,461		$	308		$	44		$	2,725		$	3,832		$	85	$	183	$	3,734
	Total securities AFS	$	299,381		$	2,527		$	1,765		$	300,143		$	288,567		$	2,028	$	4,084	$	286,511
	-1	Gross unrealized gains and losses, as presented, do not include the impact of minority investments and the related allocations and pick-up of unrealized gains and losses of AFS securities. These amounts totaled unrealized gains of $27 million and $36 million as of December 31, 2014 and 2013, respectively.
	-2	The Company invests in mortgage-backed and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. For mortgage-backed and asset-backed securitizations in which the Company has other involvement, see Note 22 to the Consolidated Financial Statements.
	-3	The gross unrealized losses on state and municipal debt securities are primarily attributable to the effects of fair value hedge accounting.  Specifically, Citi hedges the LIBOR-benchmark interest rate component of certain fixed-rate tax-exempt state and municipal debt securities utilizing LIBOR-based interest rate swaps. During the hedge period, losses incurred on the LIBOR-hedging swaps recorded in earnings were substantially offset by gains on the state and municipal debt securities attributable to changes in the LIBOR swap rate being hedged.  However, because the LIBOR swap rate decreased significantly during the hedge period while the overall fair value of the municipal debt securities was relatively unchanged, the effect of reclassifying fair value gains on these securities from Accumulated other comprehensive income (loss) (AOCI) to earnings, attributable solely to changes in the LIBOR swap rate, resulted in net unrealized losses remaining in AOCI that relate to the unhedged components of these securities.
Carrying value and fair value of debt securities HTM	The carrying value and fair value of debt securities HTM at December 31, 2014 and 2013 were as follows:
	In millions of dollars	Amortized			Net unrealized gains			Carrying			Gross			Gross			Fair
		cost basis(1)			(losses)			value(2)			unrealized			unrealized			value
					recognized in						gains			(losses)
					AOCI
	31-Dec-14
	Debt securities held-to-maturity
	Mortgage-backed securities(3)
	U.S. government agency guaranteed	$	8,795		$	95		$	8,890		$	106		$	(6	)	$	8,990
	Prime	60			(12		)	48			6			(1		)	53
	Alt-A	1,125			(213		)	912			537			(287		)	1,162
	Subprime	6			(1		)	5			15			—			20
	Non-U.S. residential	983			(137		)	846			92			—			938
	Commercial	8			—			8			1			—			9
	Total mortgage-backed securities	$	10,977		$	(268	)	$	10,709		$	757		$	(294	)	$	11,172
	State and municipal(4)	$	8,443		$	(494	)	$	7,949		$	227		$	(57	)	$	8,119
	Foreign government	4,725			—			4,725			77			—			4,802
	Corporate	—			—			—			—			—			—
	Asset-backed securities(3)	556			(18		)	538			50			(10		)	578
	Total debt securities held-to-maturity (5)	$	24,701		$	(780	)	$	23,921		$	1,111		$	(361	)	$	24,671
	31-Dec-13
	Debt securities held-to-maturity
	Mortgage-backed securities(3)
	Prime	$	72		$	(16	)	$	56		$	5		$	(2	)	$	59
	Alt-A	1,379			(287		)	1,092			449			(263		)	1,278
	Subprime	2			—			2			1			—			3
	Non-U.S. residential	1,372			(206		)	1,166			60			(20		)	1,206
	Commercial	10			—			10			1			—			11
	Total mortgage-backed securities	$	2,835		$	(509	)	$	2,326		$	516		$	(285	)	$	2,557
	State and municipal	$	1,394		$	(62	)	$	1,332		$	50		$	(70	)	$	1,312
	Foreign government	5,628			—			5,628			70			(10		)	5,688
	Corporate	818			(78		)	740			111			—			851
	Asset-backed securities(3)	599			(26		)	573			22			(10		)	585
	Total debt securities held-to-maturity	$	11,274		$	(675	)	$	10,599		$	769		$	(375	)	$	10,993
	-1	For securities transferred to HTM from Trading account assets, amortized cost basis is defined as the fair value of the securities at the date of transfer plus any accretion income and less any impairments recognized in earnings subsequent to transfer. For securities transferred to HTM from AFS, amortized cost is defined as the original purchase cost, adjusted for the cumulative accretion or amortization of any purchase discount or premium, plus or minus any cumulative fair value hedge adjustments, net of accretion or amortization, and less any other-than-temporary impairment recognized in earnings.
	-2	HTM securities are carried on the Consolidated Balance Sheet at amortized cost basis, plus or minus any unamortized unrealized gains and losses and fair value hedge adjustments recognized in AOCI prior to reclassifying the securities from AFS to HTM. Changes in the values of these securities are not reported in the financial statements, except for the amortization of any difference between the carrying value at the transfer date and par value of the securities, and the recognition of any non-credit fair value adjustments in AOCI in connection with the recognition of any credit impairment in earnings related to securities the Company continues to intend to hold until maturity.
	-3	The Company invests in mortgage-backed and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. For mortgage-backed and asset-backed securitizations in which the Company has other involvement, see Note 22 to the Consolidated Financial Statements.
	-4	The net unrealized losses recognized in AOCI on state and municipal debt securities are primarily attributable to the effects of fair value hedge accounting applied when these debt securities were classified as AFS. Specifically, Citi hedged the LIBOR-benchmark interest rate component of certain fixed-rate tax-exempt state and municipal debt securities utilizing LIBOR-based interest rate swaps. During the hedge period, losses incurred on the LIBOR-hedging swaps recorded in earnings were substantially offset by gains on the state and municipal debt securities attributable to changes in the LIBOR swap rate being hedged. However, because the LIBOR swap rate decreased significantly during the hedge period while the overall fair value of the municipal debt securities was relatively unchanged, the effect of reclassifying fair value gains on these securities from AOCI to earnings attributable solely to changes in the LIBOR swap rate resulted in net unrealized losses remaining in AOCI that relate to the unhedged components of these securities. Upon transfer of these debt securities to HTM, all hedges have been de-designated and hedge accounting has ceased.
	-5	During the second quarter of 2014, securities with a total fair value of approximately $11.8 billion were transferred from AFS to HTM and comprised $5.4 billion of U.S. government agency mortgage-backed securities and $6.4 billion of obligations of U.S. states and municipalities. The transfer reflects the Company’s intent to hold these securities to maturity or to issuer call in order to reduce the impact of price volatility on AOCI and certain capital measures under Basel III. While these securities were transferred to HTM at fair value as of the transfer date, no subsequent changes in value may be recorded, other than in connection with the recognition of any subsequent other-than-temporary impairment and the amortization of differences between the carrying values at the transfer date and the par values of each security as an adjustment of yield over the remaining contractual life of each security. Any net unrealized holding losses within AOCI related to the respective securities at the date of transfer, inclusive of any cumulative fair value hedge adjustments, will be amortized over the remaining contractual life of each security as an adjustment of yield in a manner consistent with the amortization of any premium or discount.
Total other-than-temporary impairments recognized	The following table presents the total OTTI recognized in earnings for the year ended December 31, 2014:
	OTTI on Investments and Other Assets	Year ended December 31, 2014
	In millions of dollars	AFS(1)			HTM			Other			Total
								Assets
	Impairment losses related to securities that the Company does not intend to sell nor will likely be required to sell:
	Total OTTI losses recognized during the period	$	21		$	5		$	—		$	26
	Less: portion of impairment loss recognized in AOCI (before taxes)	8			—			—			8
	Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	$	13		$	5		$	—		$	18
	Impairment losses recognized in earnings for securities that the Company intends to sell or more-likely-than-not will be required to sell before recovery	380			26			—			406
	Total impairment losses recognized in earnings	$	393		$	31		$	—		$	424
	-1	Includes OTTI on non-marketable equity securities.
	The following table presents the total OTTI recognized in earnings for the year ended December 31, 2013:
	OTTI on Investments and Other Assets	Year ended December 31, 2013
	In millions of dollars	AFS(1)			HTM			Other			Total
								Assets (2)
	Impairment losses related to securities that the Company does not intend to sell nor will likely be required to sell:
	Total OTTI losses recognized during the period	$	9		$	154		$	—		$	163
	Less: portion of impairment loss recognized in AOCI (before taxes)	—			98			—			98
	Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	$	9		$	56		$	—		$	65
	Impairment losses recognized in earnings for securities that the Company intends to sell or more-likely-than-not will be required to sell before recovery (2)	269			—			201			470
	Total impairment losses recognized in earnings	$	278		$	56		$	201		$	535
	-1	Includes OTTI on non-marketable equity securities.
	-2	The impairment charge relates to the carrying value of Citi’s then-remaining 35% interest in the Morgan Stanley Smith Barney joint venture (MSSB), offset by the equity pickup from MSSB during the respective periods that was recorded in Other revenue.
Cumulative Other-Than-Temporary Impairment Credit Losses Recognized in Earnings	The following is a 12-month roll-forward of the credit-related impairments recognized in earnings for AFS and HTM debt securities held as of December 31, 2014 that the Company does not intend to sell nor likely will be required to sell:
		Cumulative OTTI credit losses recognized in earnings on securities still held
	In millions of dollars	Dec. 31, 2013 balance			Credit			Credit			Reductions due to			Dec. 31, 2014 balance
					impairments			impairments			credit-impaired
					recognized in			recognized in			securities sold,
					earnings on			earnings on			transferred or
					securities not			securities that			matured
					previously			have
					impaired			been previously
								impaired
	AFS debt securities
	Mortgage-backed securities	$	295		$	—		$	—		$	—		$	295
	Foreign government securities	171			—			—			—			171
	Corporate	113			8			—			(3		)	118
	All other debt securities	144			5			—			—			149
	Total OTTI credit losses recognized for AFS debt securities	$	723		$	13		$	—		$	(3	)	$	733
	HTM debt securities
	Mortgage-backed securities(1)	$	678		$	5		$	—		$	(13	)	$	670
	Corporate	56			—			—			(56		)	—
	All other debt securities	133			—			—			—			133
	Total OTTI credit losses recognized for HTM debt securities	$	867		$	5		$	—		$	(69	)	$	803
	-1	Primarily consists of Alt-A securities.
Investments in Alternative Investment Funds
		Fair value						Unfunded						Redemption frequency	Redemption notice
								commitments						(if currently eligible)	period
														monthly, quarterly, annually
	In millions of dollars	2014			2013			2014			2013
	Hedge funds	$	8		$	751		$	—		$	—		Generally quarterly	10-95 days
	Private equity funds(1)(2)	796			794			205			170			—	—
	Real estate funds (2)(3)	166			294			24			36			—	—
	Total(4)	$	970		$	1,839		$	229		$	206		—	—
	-1	Private equity funds include funds that invest in infrastructure, leveraged buyout transactions, emerging markets and venture capital.
	-2	With respect to the Company’s investments in private equity funds and real estate funds, distributions from each fund will be received as the underlying assets held by these funds are liquidated. It is estimated that the underlying assets of these funds will be liquidated over a period of several years as market conditions allow. Private equity and real estate funds do not allow redemption of investments by their investors. Investors are permitted to sell or transfer their investments, subject to the approval of the general partner or investment manager of these funds, which generally may not be unreasonably withheld.
	-3	Includes several real estate funds that invest primarily in commercial real estate in the U.S., Europe and Asia.
	-4	Included in the total fair value of investments above are $0.8 billion and $1.6 billion of fund assets that are valued using NAVs provided by third-party asset managers as of December 31, 2014 and December 31, 2013, respectively.
AFS debt securities
Schedule of Investments disclosures
Fair value of securities in unrealized loss position	The table below shows the fair value of AFS securities that have been in an unrealized loss position for less than 12 months or for 12 months or longer as of December 31, 2014 and 2013:
		Less than 12 months						12 months or longer						Total
	In millions of dollars	Fair			Gross			Fair			Gross			Fair			Gross
		value			unrealized			value			unrealized			value			unrealized
					losses						losses						losses
	31-Dec-14
	Securities AFS
	Mortgage-backed securities
	U.S. government-sponsored agency guaranteed	$	4,198		$	30		$	5,547		$	129		$	9,745		$	159
	Prime	5			—			2			—			7			—
	Non-U.S. residential	1,276			3			199			4			1,475			7
	Commercial	124			1			136			2			260			3
	Total mortgage-backed securities	$	5,603		$	34		$	5,884		$	135		$	11,487		$	169
	U.S. Treasury and federal agency securities
	U.S. Treasury	$	36,581		$	119		$	1,013		$	8		$	37,594		$	127
	Agency obligations	5,698			9			754			4			6,452			13
	Total U.S. Treasury and federal agency securities	$	42,279		$	128		$	1,767		$	12		$	44,046		$	140
	State and municipal	$	386		$	15		$	5,802		$	962		$	6,188		$	977
	Foreign government	18,495			147			5,984			139			24,479			286
	Corporate	3,511			63			1,350			28			4,861			91
	Asset-backed securities	3,701			13			3,816			45			7,517			58
	Marketable equity securities AFS	51			4			218			40			269			44
	Total securities AFS	$	74,026		$	404		$	24,821		$	1,361		$	98,847		$	1,765
	31-Dec-13
	Securities AFS
	Mortgage-backed securities
	U.S. government-sponsored agency guaranteed	$	19,377		$	533		$	5,643		$	355		$	25,020		$	888
	Prime	85			3			3			—			88			3
	Non-U.S. residential	2,103			4			5			—			2,108			4
	Commercial	206			6			28			2			234			8
	Total mortgage-backed securities	$	21,771		$	546		$	5,679		$	357		$	27,450		$	903
	U.S. Treasury and federal agency securities
	U.S. Treasury	$	34,780		$	133		$	268		$	14		$	35,048		$	147
	Agency obligations	6,692			66			101			1			6,793			67
	Total U.S. Treasury and federal agency securities	$	41,472		$	199		$	369		$	15		$	41,841		$	214
	State and municipal	$	595		$	29		$	11,447		$	1,976		$	12,042		$	2,005
	Foreign government	35,783			477			5,778			63			41,561			540
	Corporate	4,565			108			387			11			4,952			119
	Asset-backed securities	11,207			57			1,931			63			13,138			120
	Marketable equity securities AFS	1,271			92			806			91			2,077			183
	Total securities AFS	$	116,664		$	1,508		$	26,397		$	2,576		$	143,061		$	4,084
Amortized cost and fair value of debt securities by contractual maturity dates	The following table presents the amortized cost and fair value of AFS debt securities by contractual maturity dates as of December 31, 2014 and 2013:
		2014						2013
	In millions of dollars	Amortized			Fair			Amortized			Fair
		cost			value			cost			value
	Mortgage-backed securities(1)
	Due within 1 year	$	44		$	44		$	87		$	87
	After 1 but within 5 years	931			935			346			354
	After 5 but within 10 years	1,362			1,387			2,898			2,932
	After 10 years(2)	42,163			42,642			49,723			49,282
	Total	$	44,500		$	45,008		$	53,054		$	52,655
	U.S. Treasury and federal agency securities
	Due within 1 year	$	13,070		$	13,084		$	15,789		$	15,853
	After 1 but within 5 years	104,982			105,131			66,232			66,457
	After 5 but within 10 years	2,286			2,325			2,129			2,185
	After 10 years(2)	3,079			3,150			3,061			3,101
	Total	$	123,417		$	123,690		$	87,211		$	87,596
	State and municipal
	Due within 1 year	$	590		$	590		$	576		$	581
	After 1 but within 5 years	3,672			3,677			3,731			3,735
	After 5 but within 10 years	532			546			439			482
	After 10 years(2)	8,732			7,886			16,015			14,142
	Total	$	13,526		$	12,699		$	20,761		$	18,940
	Foreign government
	Due within 1 year	$	31,355		$	31,382		$	37,005		$	36,959
	After 1 but within 5 years	41,913			42,467			51,344			51,304
	After 5 but within 10 years	16,008			15,779			7,314			7,216
	After 10 years(2)	973			1,069			945			992
	Total	$	90,249		$	90,697		$	96,608		$	96,471
	All other(3)
	Due within 1 year	$	1,248		$	1,251		$	2,786		$	2,733
	After 1 but within 5 years	10,442			10,535			10,934			11,020
	After 5 but within 10 years	7,282			7,318			5,632			5,641
	After 10 years(2)	6,256			6,220			7,749			7,721
	Total	$	25,228		$	25,324		$	27,101		$	27,115
	Total debt securities AFS	$	296,920		$	297,418		$	284,735		$	282,777
	-1	Includes mortgage-backed securities of U.S. government-sponsored agencies.
	-2	Investments with no stated maturities are included as contractual maturities of greater than 10 years. Actual maturities may differ due to call or prepayment rights.
	-3	Includes corporate, asset-backed and other debt securities.
HTM debt securities
Schedule of Investments disclosures
Fair value of securities in unrealized loss position	The table below shows the fair value of debt securities in HTM that have been in an unrecognized loss position as of December 31, 2014 and 2013 for less than 12 months and for 12 months or longer:
		Less than 12 months						12 months or longer						Total
	In millions of dollars	Fair			Gross			Fair			Gross			Fair			Gross
		value			unrecognized			value			unrecognized			value			unrecognized
					losses						losses						losses
	31-Dec-14
	Debt securities held-to-maturity
	Mortgage-backed securities	$	4		$	—		$	1,134		$	294		$	1,138		$	294
	State and municipal	2,528			34			314			23			2,842			57
	Foreign government	—			—			—			—			—			—
	Asset-backed securities	9			1			174			9			183			10
	Total debt securities held-to-maturity	$	2,541		$	35		$	1,622		$	326		$	4,163		$	361
	31-Dec-13
	Debt securities held-to-maturity
	Mortgage-backed securities	$	—		$	—		$	358		$	285		$	358		$	285
	State and municipal	235			20			302			50			537			70
	Foreign government	920			10			—			—			920			10
	Asset-backed securities	98			6			198			4			296			10
	Total debt securities held-to-maturity	$	1,253		$	36		$	858		$	339		$	2,111		$	375
Amortized cost and fair value of debt securities by contractual maturity dates	The following table presents the carrying value and fair value of HTM debt securities by contractual maturity dates as of December 31, 2014 and 2013:
		2014						2013
	In millions of dollars	Carrying value			Fair value			Carrying value			Fair value
	Mortgage-backed securities
	Due within 1 year	$	—		$	—		$	—		$	—
	After 1 but within 5 years	—			—			—			—
	After 5 but within 10 years	863			869			10			11
	After 10 years(1)	9,846			10,303			2,316			2,546
	Total	$	10,709		$	11,172		$	2,326		$	2,557
	State and municipal
	Due within 1 year	$	36		$	38		$	8		$	9
	After 1 but within 5 years	24			24			17			17
	After 5 but within 10 years	144			148			69			72
	After 10 years(1)	7,745			7,909			1,238			1,214
	Total	$	7,949		$	8,119		$	1,332		$	1,312
	Foreign government
	Due within 1 year	$	—		$	—		$	—		$	—
	After 1 but within 5 years	4,725			4,802			5,628			5,688
	After 5 but within 10 years	—			—			—			—
	After 10 years(1)	—			—			—			—
	Total	$	4,725		$	4,802		$	5,628		$	5,688
	All other(2)
	Due within 1 year	$	—		$	—		$	—		$	—
	After 1 but within 5 years	—			—			740			851
	After 5 but within 10 years	—			—			—			—
	After 10 years(1)	538			578			573			585
	Total	$	538		$	578		$	1,313		$	1,436
	Total debt securities held-to-maturity	$	23,921		$	24,671		$	10,599		$	10,993
	-1	Investments with no stated maturities are included as contractual maturities of greater than 10 years. Actual maturities may differ due to call or prepayment rights.
	-2	Includes corporate and asset-backed securities.

LOANS_Tables

LOANS (Tables)	12 Months Ended
	Dec. 31, 2014
Loans receivable
Schedule of changes in the accretable yield, related allowance and carrying amount, net of accretable yield	The changes in the accretable yield, related allowance and carrying amount net of accretable yield for 2014 and 2013 are as follows:
	In millions of dollars	Accretable			Carrying			Allowance
		yield			amount of loan
					receivable
	Balance at December 31, 2012	$	22		$	537		$	98
	Purchases (1)	$	46		$	405		$	—
	Disposals/payments received	(5		)	(199		)	(8		)
	Accretion	(10		)	10			—
	Builds (reductions) to the allowance	22			—			25
	Increase to expected cash flows	3			—			—
	FX/other	—			(50		)	(2		)
	Balance at December 31, 2013 (2)	$	78		$	703		$	113
	Purchases (1)	$	1		$	46		$	—
	Disposals/payments received	(6		)	(307		)	(15		)
	Accretion	(24		)	24			—
	Builds (reductions) to the allowance	(36		)	—			(27		)
	Increase to expected cash flows	23			—			—
	FX/other	(9		)	(45		)	(11		)
	Balance at December 31, 2014 (2)	$	27		$	421		$	60
	-1	The balance reported in the column “Carrying amount of loan receivable” consists of $46 million and $405 million in 2014 and 2013, respectively, of purchased loans accounted for under the level-yield method. No purchased loans were accounted for under the cost-recovery method. These balances represent the fair value of these loans at their acquisition date. The related total expected cash flows for the level-yield loans at their acquisition dates were $46 million and $451 million in 2014 and 2013, respectively.
	-2	The balance reported in the column “Carrying amount of loan receivable” consists of $413 million and $691 million of loans accounted for under the level-yield method and $8 million and $12 million accounted for under the cost-recovery method in 2014 and 2013, respectively.
Consumer
Loans receivable
Schedule of loans	The following table provides information by loan type for the periods indicated:
	In millions of dollars	2014			2013
	Consumer loans
	In U.S. offices
	Mortgage and real estate(1)	$	96,533		$	108,453
	Installment, revolving credit, and other	14,450			13,398
	Cards	112,982			115,651
	Commercial and industrial	5,895			6,592
		$	229,860		$	244,094
	In offices outside the U.S.
	Mortgage and real estate(1)	$	54,462		$	55,511
	Installment, revolving credit, and other	31,128			33,182
	Cards	32,032			36,740
	Commercial and industrial	22,561			24,107
	Lease financing	609			769
		$	140,792		$	150,309
	Total Consumer loans	$	370,652		$	394,403
	Net unearned income	(682		)	(572		)
	Consumer loans, net of unearned income	$	369,970		$	393,831
	-1	Loans secured primarily by real estate.
Schedule of loan delinquency and non-accrual details	Consumer Loan Delinquency and Non-Accrual Details at December 31, 2014
	In millions of dollars	Total			30-89 days			≥ 90 days			Past due			Total			Total		90 days past due
		current(1)(2)			past due(3)			past due(3)			government			loans(2)			non-accrual		and accruing
											guaranteed(4)
	In North America offices
	Residential first mortgages	$	61,730		$	1,280		$	1,371		$	3,443		$	67,824		$	2,746	$	2,759
	Home equity loans(5)	27,262			335			520			—			28,117			1,271		—
	Credit cards	111,441			1,316			1,271			—			114,028			—		1,273
	Installment and other	12,361			229			284			—			12,874			254		3
	Commercial market loans	8,630			31			13			—			8,674			135		15
	Total	$	221,424		$	3,191		$	3,459		$	3,443		$	231,517		$	4,406	$	4,050
	In offices outside North America
	Residential first mortgages	$	44,782		$	312		$	223		$	—		$	45,317		$	454	$	—
	Home equity loans(5)	—			—			—			—			—			—		—
	Credit cards	30,327			602			553			—			31,482			413		322
	Installment and other	29,297			328			149			—			29,774			216		—
	Commercial market loans	31,280			86			255			—			31,621			405		—
	Total	$	135,686		$	1,328		$	1,180		$	—		$	138,194		$	1,488	$	322
	Total GCB and Citi Holdings	$	357,110		$	4,519		$	4,639		$	3,443		$	369,711		$	5,894	$	4,372
	Other	238			10			11			—			259			30		—
	Total Citigroup	$	357,348		$	4,529		$	4,650		$	3,443		$	369,970		$	5,924	$	4,372
	-1	Loans less than 30 days past due are presented as current.
	-2	Includes $43 million of residential first mortgages recorded at fair value.
	-3	Excludes loans guaranteed by U.S. government-sponsored entities.
	-4	Consists of residential first mortgages that are guaranteed by U.S. government-sponsored entities that are 30–89 days past due of $0.6 billion and 90 days past due of $2.8 billion.
	-5	Fixed rate home equity loans and loans extended under home equity lines of credit, which are typically in junior lien positions.
	Consumer Loan Delinquency and Non-Accrual Details at December 31, 2013
	In millions of dollars	Total			30-89 days			≥ 90 days			Past due			Total			Total		90 days past due
		current(1)(2)			past due(3)			past due(3)			government			loans(2)			non-accrual		and accruing
											guaranteed(4)
	In North America offices
	Residential first mortgages	$	66,612		$	2,044		$	1,975		$	5,271		$	75,902		$	3,415	$	3,997
	Home equity loans(5)	30,603			434			605			—			31,642			1,452		—
	Credit cards	113,886			1,491			1,452			—			116,829			—		1,452
	Installment and other	12,609			225			243			—			13,077			247		7
	Commercial market loans	8,630			26			28			—			8,684			112		7
	Total	$	232,340		$	4,220		$	4,303		$	5,271		$	246,134		$	5,226	$	5,463
	In offices outside North America
	Residential first mortgages	$	46,067		$	435		$	332		$	—		$	46,834		$	584	$	—
	Home equity loans(5)	—			—			—			—			—			—		—
	Credit cards	34,733			780			641			—			36,154			402		413
	Installment and other	30,138			398			158			—			30,694			230		—
	Commercial market loans	33,242			111			295			—			33,648			610		—
	Total	$	144,180		$	1,724		$	1,426		$	—		$	147,330		$	1,826	$	413
	Total GCB and Citi Holdings	$	376,520		$	5,944		$	5,729		$	5,271		$	393,464		$	7,052	$	5,876
	Other	338			13			16			—			367			43		—
	Total Citigroup	$	376,858		$	5,957		$	5,745		$	5,271		$	393,831		$	7,095	$	5,876
	-1	Loans less than 30 days past due are presented as current.
	-2	Includes $0.9 billion of residential first mortgages recorded at fair value.
	-3	Excludes loans guaranteed by U.S. government-sponsored entities.
	-4	Consists of residential first mortgages that are guaranteed by U.S. government-sponsored entities that are 30–89 days past due of $1.2 billion and 90 days past due of $4.1 billion.
	-5	Fixed rate home equity loans and loans extended under home equity lines of credit, which are typically in junior lien positions.
Schedule of loans credit quality indicators	The following tables provide details on the FICO scores attributable to Citi’s U.S. consumer loan portfolio as of December 31, 2014 and 2013 (commercial market loans are not included in the table since they are business-based and FICO scores are not a primary driver in their credit evaluation). FICO scores are updated monthly for substantially all of the portfolio or, otherwise, on a quarterly basis, for the remaining portfolio.
	FICO score distribution in U.S. portfolio(1)(2)	31-Dec-14
	In millions of dollars	Less than			≥ 620 but less			Equal to or
		620			than 660			greater
								than 660
	Residential first mortgages	$	8,911		$	5,463		$	45,783
	Home equity loans	3,257			2,456			20,957
	Credit cards	7,647			10,296			92,877
	Installment and other	4,015			2,520			5,150
	Total	$	23,830		$	20,735		$	164,767
	-1	Excludes loans guaranteed by U.S. government entities, loans subject to long-term standby commitments (LTSCs) with U.S. government-sponsored entities and loans recorded at fair value.
	-2	Excludes balances where FICO was not available. Such amounts are not material.
	FICO score distribution in U.S. portfolio(1)(2)	31-Dec-13
	In millions of dollars	Less than			≥ 620 but less			Equal to or
		620			than 660			greater
								than 660
	Residential first mortgages	$	11,860		$	6,426		$	46,207
	Home equity loans	4,093			2,779			23,152
	Credit cards	8,125			10,693			94,437
	Installment and other	3,900			2,399			5,186
	Total	$	27,978		$	22,297		$	168,982
	-1	Excludes loans guaranteed by U.S. government entities, loans subject to LTSCs with U.S. government-sponsored entities and loans recorded at fair value.
	-2	Excludes balances where FICO was not available. Such amounts are not material.
Schedule of impaired loans	The following tables present information about total impaired consumer loans at and for the periods ended December 31, 2014 and 2013, respectively, and for the years ended December 31, 2014 and 2013 for interest income recognized on impaired consumer loans:
		At and for the year ended December 31, 2014
	In millions of dollars	Recorded			Unpaid			Related			Average			Interest income
		investment(1)(2)			principal balance			specific allowance(3)			carrying value(4)			recognized(5)(6)
	Mortgage and real estate
	Residential first mortgages	$	13,551		$	14,387		$	1,909		$	15,389		$	690
	Home equity loans	2,029			2,674			599			2,075			74
	Credit cards	2,407			2,447			849			2,732			196
	Installment and other
	Individual installment and other	948			963			450			975			124
	Commercial market loans	423			599			110			381			22
	Total	$	19,358		$	21,070		$	3,917		$	21,552		$	1,106
	-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount and direct write-downs and includes accrued interest only on credit card loans.
	-2	$1,896 million of residential first mortgages, $554 million of home equity loans and $158 million of commercial market loans do not have a specific allowance.
	(3) Included in the Allowance for loan losses.
	(4) Average carrying value represents the average recorded investment ending balance for the last four quarters and does not include the related specific allowance.
	(5) Includes amounts recognized on both an accrual and cash basis.
	(6) Cash interest receipts on smaller-balance homogeneous loans are generally recorded as revenue. The interest recognition policy for commercial market loans is identical to that for corporate loans, as described below.
		At and for the year ended December 31, 2013
	In millions of dollars	Recorded			Unpaid			Related			Average			Interest income
		investment(1)(2)			principal balance			specific allowance(3)			carrying value(4)			recognized(5)(6)(7)
	Mortgage and real estate
	Residential first mortgages	$	16,801		$	17,788		$	2,309		$	17,616		$	790
	Home equity loans	2,141			2,806			427			2,116			81
	Credit cards	3,339			3,385			1,178			3,720			234
	Installment and other
	Individual installment and other	1,114			1,143			536			1,094			153
	Commercial market loans	398			605			183			404			22
	Total	$	23,793		$	25,727		$	4,633		$	24,950		$	1,280
	-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount and direct write-downs and includes accrued interest only on credit card loans.
	-2	$2,169 million of residential first mortgages, $568 million of home equity loans and $111 million of commercial market loans do not have a specific allowance.
	-3	Included in the Allowance for loan losses.
	-4	Average carrying value represents the average recorded investment ending balance for last four quarters and does not include the related specific allowance.
	(5) Includes amounts recognized on both an accrual and cash basis.
	(6) Cash interest receipts on smaller-balance homogeneous loans are generally recorded as revenue. The interest recognition policy for commercial market loans is identical to that for corporate loans, as described below.
	-7	Interest income recognized for the year ended December 31, 2012 was $1,520 million.
Schedule of troubled debt restructurings	The following tables present consumer TDRs occurring during the years ended December 31, 2014 and 2013:
		At and for the year ended December 31, 2014
	In millions of dollars except number of loans modified	Number of		Post-			Deferred			Contingent			Principal			Average
		loans modified		modification			principal(3)			principal			forgiveness(5)			interest rate
				recorded						forgiveness(4)						reduction
				investment(1)(2)
	North America
	Residential first mortgages	20,114		$	2,478		$	52		$	36		$	16		1	%
	Home equity loans	7,444		279			3			—			14			2
	Credit cards	185,962		808			—			—			—			15
	Installment and other revolving	46,838		351			—			—			—			7
	Commercial markets(6)	191		35			—			—			1			—
	Total(7)	260,549		$	3,951		$	55		$	36		$	31
	International
	Residential first mortgages	3,150		$	103		$	—		$	—		$	1		1	%
	Home equity loans	67		11			—			—			—			—
	Credit cards	139,128		447			—			—			9			13
	Installment and other revolving	61,563		292			—			—			7			9
	Commercial markets(6)	346		200			—			—			—			—
	Total(7)	204,254		$	1,053		$	—		$	—		$	17
		At and for the year ended December 31, 2013
	In millions of dollars except number of loans modified	Number of		Post-			Deferred			Contingent			Principal			Average
		loans modified		modification			principal(3)			principal			forgiveness(5)			interest rate
				recorded						forgiveness(4)						reduction
				investment(1)(8)
	North America
	Residential first mortgages	32,116		$	4,160		$	68		$	25		$	158		1	%
	Home equity loans	12,774		552			1			—			92			1
	Credit cards	172,211		826			—			—			—			14
	Installment and other revolving	53,332		381			—			—			—			7
	Commercial markets(6)	202		39			—			—			—			—
	Total(7)	270,635		$	5,958		$	69		$	25		$	250
	International
	Residential first mortgages	3,598		$	159		$	—		$	—		$	2		1	%
	Home equity loans	68		2			—			—			—			—
	Credit cards	165,350		557			—			—			10			13
	Installment and other revolving	59,030		342			—			—			7			7
	Commercial markets(6)	413		104			2			—			—			—
	Total(7)	228,459		$	1,164		$	2		$	—		$	19
	-1	Post-modification balances include past due amounts that are capitalized at the modification date.
	-2	Post-modification balances in North America include $322 million of residential first mortgages and $80 million of home equity loans to borrowers who have gone through Chapter 7 bankruptcy in the year ended December 31, 2014. These amounts include $179 million of residential first mortgages and $69 million of home equity loans that were newly classified as TDRs in the year ended December 31, 2014 as a result of OCC guidance, as described above.
	-3	Represents portion of contractual loan principal that is non-interest bearing but still due from the borrower. Such deferred principal is charged off at the time of permanent modification to the extent that the related loan balance exceeds the underlying collateral value.
	-4	Represents portion of contractual loan principal that is non-interest bearing and, depending upon borrower performance, eligible for forgiveness.
	-5	Represents portion of contractual loan principal that was forgiven at the time of permanent modification.
	(6) Commercial markets loans are generally borrower-specific modifications and incorporate changes in the amount and/or timing of principal and/or interest.
	(7) The above tables reflect activity for loans outstanding as of the end of the reporting period that were considered TDRs.
	(8) Post-modification balances in North America include $502 million of residential first mortgages and $101 million of home equity loans to borrowers who have gone through Chapter 7 bankruptcy in the year ended December 31, 2013. These amounts include $332 million of residential first mortgages and $85 million of home equity loans that were newly classified as TDRs in the year ended December 31, 2013 as a result of OCC guidance, as described above.
Schedule of troubled debt restructuring loans that defaulted	The following table presents consumer TDRs that defaulted during the years ended December 31, 2014 and 2013, respectively, for which the payment default occurred within one year of a permanent modification. Default is defined as 60 days past due, except for classifiably managed commercial markets loans, where default is defined as 90 days past due.
		Years ended December 31,
	In millions of dollars	2014			2013
	North America
	Residential first mortgages	$	715		$	1,532
	Home equity loans	72			183
	Credit cards	194			204
	Installment and other revolving	95			91
	Commercial markets	9			3
	Total	$	1,085		$	2,013
	International
	Residential first mortgages	$	24		$	54
	Home equity loans	—			—
	Credit cards	217			198
	Installment and other revolving	104			104
	Commercial markets	105			15
	Total	$	450		$	371
Corporate
Loans receivable
Schedule of loans	The following table presents information by corporate loan type as of December 31, 2014 and December 31, 2013:
	In millions of dollars	December 31,			December 31,
		2014			2013
	Corporate
	In U.S. offices
	Commercial and industrial	$	35,055		$	32,704
	Financial institutions	36,272			25,102
	Mortgage and real estate(1)	32,537			29,425
	Installment, revolving credit and other	29,207			34,434
	Lease financing	1,758			1,647
		$	134,829		$	123,312
	In offices outside the U.S.
	Commercial and industrial	$	79,239		$	82,663
	Financial institutions	33,269			38,372
	Mortgage and real estate(1)	6,031			6,274
	Installment, revolving credit and other	19,259			18,714
	Lease financing	356			527
	Governments and official institutions	2,236			2,341
		$	140,390		$	148,891
	Total Corporate loans	$	275,219		$	272,203
	Net unearned income	(554		)	(562		)
	Corporate loans, net of unearned income	$	274,665		$	271,641
	-1	Loans secured primarily by real estate.
Schedule of loan delinquency and non-accrual details
	In millions of dollars	30-89 days			≥ 90 days			Total past due			Total			Total			Total
		past due			past due and			and accruing			non-accrual(2)			current(3)			loans (4)
		and accruing(1)			accruing(1)
	Commercial and industrial	$	50		$	—		$	50		$	575		$	109,764		$	110,389
	Financial institutions	2			—			2			250			67,580			67,832
	Mortgage and real estate	86			—			86			252			38,135			38,473
	Leases	—			—			—			51			2,062			2,113
	Other	49			1			50			55			49,844			49,949
	Loans at fair value																5,858
	Purchased Distressed Loans																51
	Total	$	187		$	1		$	188		$	1,183		$	267,385		$	274,665
	-1	Corporate loans that are 90 days past due are generally classified as non-accrual. Corporate loans are considered past due when principal or interest is contractually due but unpaid.
	-2	Citi generally does not manage corporate loans on a delinquency basis. Non-accrual loans generally include those loans that are ≥ 90 days past due or those loans for which Citi believes, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful.
	-3	Corporate loans are past due when principal or interest is contractually due but unpaid. Loans less than 30 days past due are presented as current.
	-4	Total loans include loans at fair value, which are not included in the various delinquency columns.
	Corporate Loan Delinquency and Non-Accrual Details at December 31, 2013
	In millions of dollars	30-89 days			≥ 90 days			Total past due			Total			Total			Total
		past due			past due and			and accruing			non-accrual(2)			current(3)			loans (4)
		and accruing(1)			accruing(1)
	Commercial and industrial	$	72		$	5		$	77		$	769		$	112,985		$	113,831
	Financial institutions	—			—			—			365			61,704			62,069
	Mortgage and real estate	183			58			241			515			34,027			34,783
	Leases	9			1			10			189			1,975			2,174
	Other	47			2			49			70			54,476			54,595
	Loans at fair value																4,072
	Purchased Distressed Loans																117
	Total	$	311		$	66		$	377		$	1,908		$	265,167		$	271,641
	-1	Corporate loans that are 90 days past due are generally classified as non-accrual. Corporate loans are considered past due when principal or interest is contractually due but unpaid.
	-2	Citi generally does not manage corporate loans on a delinquency basis. Non-accrual loans generally include those loans that are ≥ 90 days past due or those loans for which Citi believes, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful.
	-3	Corporate loans are past due when principal or interest is contractually due but unpaid. Loans less than 30 days past due are presented as current.
	-4	Total loans include loans at fair value, which are not included in the various delinquency columns.
Schedule of loans credit quality indicators
		Recorded investment in loans(1)
	In millions of dollars	December 31, 2014			December 31,
					2013
	Investment grade(2)
	Commercial and industrial	$	80,812		$	79,360
	Financial institutions	56,154			49,699
	Mortgage and real estate	16,068			13,178
	Leases	1,669			1,600
	Other	46,284			51,370
	Total investment grade	$	200,987		$	195,207
	Non-investment grade(2)
	Accrual
	Commercial and industrial	$	29,003		$	33,702
	Financial institutions	11,429			12,005
	Mortgage and real estate	3,587			4,205
	Leases	393			385
	Other	3,609			3,155
	Non-accrual
	Commercial and industrial	575			769
	Financial institutions	250			365
	Mortgage and real estate	252			515
	Leases	51			189
	Other	55			70
	Total non-investment grade	$	49,204		$	55,360
	Private bank loans managed on a delinquency basis (2)	$	18,616		$	17,002
	Loans at fair value	5,858			4,072
	Corporate loans, net of unearned income	$	274,665		$	271,641
	-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.
	-2	Held-for-investment loans are accounted for on an amortized cost basis.
Schedule of impaired loans	The following tables present non-accrual loan information by corporate loan type at December 31, 2014 and December 31, 2013 and interest income recognized on non-accrual corporate loans for the years ended December 31, 2014 and 2013, respectively:
	Non-Accrual Corporate Loans
		At and for the year ended December 31, 2014
	In millions of dollars	Recorded			Unpaid			Related specific			Average			Interest income
		investment(1)			principal balance			allowance			carrying value(2)			recognized(3)
	Non-accrual corporate loans
	Commercial and industrial	$	575		$	863		$	155		$	658		$	32
	Financial institutions	250			262			7			278			4
	Mortgage and real estate	252			287			24			263			8
	Lease financing	51			53			29			85			—
	Other	55			68			21			60			3
	Total non-accrual corporate loans	$	1,183		$	1,533		$	236		$	1,344		$	47
		At and for the year ended December 31, 2013
	In millions of dollars	Recorded			Unpaid			Related specific			Average			Interest income
		investment(1)			principal balance			allowance			carrying value(2)			recognized(3)
	Non-accrual corporate loans
	Commercial and industrial	$	769		$	1,074		$	79		$	967		$	30
	Financial institutions	365			382			3			378			9
	Mortgage and real estate	515			651			35			585			3
	Lease financing	189			190			131			189			—
	Other	70			216			20			64			1
	Total non-accrual corporate loans	$	1,908		$	2,513		$	268		$	2,183		$	43
		31-Dec-14						31-Dec-13
	In millions of dollars	Recorded			Related specific			Recorded			Related specific
		investment(1)			allowance			investment(1)			allowance
	Non-accrual corporate loans with valuation allowances
	Commercial and industrial	$	224		$	155		$	401		$	79
	Financial institutions	37			7			24			3
	Mortgage and real estate	70			24			253			35
	Lease financing	47			29			186			131
	Other	55			21			61			20
	Total non-accrual corporate loans with specific allowance	$	433		$	236		$	925		$	268
	Non-accrual corporate loans without specific allowance
	Commercial and industrial	$	351					$	368
	Financial institutions	213						341
	Mortgage and real estate	182						262
	Lease financing	4						3
	Other	—						9
	Total non-accrual corporate loans without specific allowance	$	750		N/A			$	983		N/A
	-1	Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.
	-2	Average carrying value represents the average recorded investment balance and does not include related specific allowance.
	-3	Interest income recognized for the year ended December 31, 2012 was $98 million.
	N/A Not Applicable
Schedule of troubled debt restructurings	The following table presents corporate TDR activity at and for the year ended December 31, 2014.
	In millions of dollars	Carrying			TDRs			TDRs			TDRs
		Value			involving changes			involving changes			involving changes
					in the amount			in the amount			in the amount
					and/or timing of			and/or timing of			and/or timing of
					principal payments(1)			interest payments(2)			both principal and
											interest payments
	Commercial and industrial	$	48		$	30		$	17		$	1
	Financial institutions	—			—			—			—
	Mortgage and real estate	8			5			1			2
	Other	—			—			—			—
	Total	$	56		$	35		$	18		$	3
	-1	TDRs involving changes in the amount or timing of principal payments may involve principal forgiveness or deferral of periodic and/or final principal payments. Because forgiveness of principal is rare for commercial loans, modifications typically have little to no impact on the loans’ projected cash flows and thus little to no impact on the allowance established for the loan.  Charge-offs for amounts deemed uncollectable may be recorded at the time of the restructuring or may have already been recorded in prior periods such that no charge-off is required at the time of the modification.
	-2	TDRs involving changes in the amount or timing of interest payments may involve a below-market interest rate.
	The following table presents corporate TDR activity at and for the year ended December 31, 2013.
	In millions of dollars	Carrying			TDRs			TDRs			TDRs
		Value			involving changes			involving changes			involving changes
					in the amount			in the amount			in the amount
					and/or timing of			and/or timing of			and/or timing of
					principal payments(1)			interest payments(2)			both principal and
											interest payments
	Commercial and industrial	$	130		$	55		$	58		$	17
	Financial institutions	—			—			—			—
	Mortgage and real estate	34			19			14			1
	Other	5			—			—			5
	Total	$	169		$	74		$	72		$	23
	-1	TDRs involving changes in the amount or timing of principal payments may involve principal forgiveness or deferral of periodic and/or final principal payments. Because forgiveness of principal is rare for commercial loans, modifications typically have little to no impact on the loans’ projected cash flows and thus little to no impact on the allowance established for the loan.  Charge-offs for amounts deemed uncollectable may be recorded at the time of the restructuring or may have already been recorded in prior periods such that no charge-off is required at the time of the modification.
	-2	TDRs involving changes in the amount or timing of interest payments may involve a below-market interest rate.
Schedule of troubled debt restructuring loans that defaulted	The following table presents total corporate loans modified in a TDR at December 31, 2014 and 2013, as well as those TDRs that defaulted during the three months ended December 31, 2014 and 2013 and for which the payment default occurred within one year of a permanent modification. Default is defined as 60 days past due, except for classifiably managed commercial markets loans, where default is defined as 90 days past due.
	In millions of dollars	TDR balances at			TDR loans in payment default during the year ended			TDR balances at			TDR loans in payment default during the year ended
		31-Dec-14			31-Dec-14			31-Dec-13			31-Dec-13
	Commercial and industrial	$	117		$	—		$	197		$	27
	Loans to financial institutions	—			—			14			—
	Mortgage and real estate	107			—			161			17
	Other	355			—			422			—
	Total	$	579		$	—		$	794		$	44
Mortgage and real estate
Loans receivable
Schedule of loans credit quality indicators	The following tables provide details on the LTV ratios attributable to Citi’s U.S. consumer mortgage portfolios as of December 31, 2014 and 2013. LTV ratios are updated monthly using the most recent Core Logic Home Price Index data available for substantially all of the portfolio applied at the Metropolitan Statistical Area level, if available, or the state level if not. The remainder of the portfolio is updated in a similar manner using the Federal Housing Finance Agency indices.
	LTV distribution in U.S. portfolio(1)(2)	31-Dec-14
	In millions of dollars	Less than or			> 80% but less			Greater
		equal to 80%			than or equal to			than
					100%			100%
	Residential first mortgages	$	48,163		$	9,480		$	2,670
	Home equity loans	14,638			7,267			4,641
	Total	$	62,801		$	16,747		$	7,311
	-1	Excludes loans guaranteed by U.S. government entities, loans subject to LTSCs with U.S. government-sponsored entities and loans recorded at fair value.
	-2	Excludes balances where LTV was not available. Such amounts are not material.
	LTV distribution in U.S. portfolio(1)(2)	31-Dec-13
	In millions of dollars	Less than or			> 80% but less			Greater
		equal to 80%			than or equal to			than
					100%			100%
	Residential first mortgages	$	45,809		$	13,458		$	5,269
	Home equity loans	14,216			8,685			6,935
	Total	$	60,025		$	22,143		$	12,204
	-1	Excludes loans guaranteed by U.S. government entities, loans subject to LTSCs with U.S. government-sponsored entities and loans recorded at fair value.
	-2	Excludes balances where LTV was not available. Such amounts are not material.

ALLOWANCE_FOR_CREDIT_LOSSES_Ta

ALLOWANCE FOR CREDIT LOSSES (Tables)	12 Months Ended
	Dec. 31, 2014
Loans and Leases Receivable, Allowance [Abstract]
Allowance for credit losses
	In millions of dollars	2014			2013			2012
	Allowance for loan losses at beginning of period	$	19,648		$	25,455		$	30,115
	Gross credit losses	(11,108		)	(12,769		)	(17,005		)
	Gross recoveries (1)(2)(3)	2,135			2,306			2,774
	Net credit losses (NCLs)	$	(8,973	)	$	(10,463	)	$	(14,231	)
	NCLs	$	8,973		$	10,463		$	14,231
	Net reserve releases	(1,879		)	(1,961		)	(1,908		)
	Net specific reserve releases	(266		)	(898		)	(1,865		)
	Total provision for credit losses	$	6,828		$	7,604		$	10,458
	Other, net (4)	(1,509		)	(2,948		)	(887		)
	Allowance for loan losses at end of period	$	15,994		$	19,648		$	25,455
	Allowance for credit losses on unfunded lending commitments at beginning of period (5)	$	1,229		$	1,119		$	1,136
	Provision (release) for unfunded lending commitments	(162		)	80			(16		)
	Other, net	(4		)	30			(1		)
	Allowance for credit losses on unfunded lending commitments at end of period (5)	$	1,063		$	1,229		$	1,119
	Total allowance for loans, leases, and unfunded lending commitments	$	17,057		$	20,877		$	26,574
	-1	Recoveries have been reduced by certain collection costs that are incurred only if collection efforts are successful.
	-2	2012 includes approximately $635 million of incremental charge-offs related to OCC guidance issued in the third quarter of 2012 (see Note 1 to the Consolidated Financial Statements). There was a corresponding approximately $600 million release in the third quarter of 2012 allowance for loan losses related to these charge-offs. 2012 also includes a benefit to charge-offs of approximately $40 million related to finalizing the impact of this OCC guidance in the fourth quarter of 2012.
	-3	2012 includes approximately $370 million of incremental charge-offs related to previously deferred principal balances on modified loans in the first quarter of 2012. These charge-offs were related to anticipated forgiveness of principal in connection with the national mortgage settlement. There was a corresponding approximately $350 million reserve release in the first quarter of 2012 related to these charge-offs.
	-4	2014 includes reductions of approximately $1.1 billion related to the sale or transfer to held-for-sale (HFS) of various loan portfolios, which includes approximately $411 million related to the transfer of various real estate loan portfolios to HFS, approximately $204 million related to the transfer to HFS of a business in Greece, approximately $177 million related to the transfer to HFS of a business in Spain, approximately $29 million related to the transfer to HFS of a business in Honduras, and approximately $108 million related to the transfer to HFS of various EMEA loan portfolios. Additionally, 2014 includes a reduction of approximately $463 million related to foreign currency translation. 2013 includes reductions of approximately $2.4 billion related to the sale or transfer to held-for-sale of various loan portfolios, which includes approximately $360 million related to the sale of Credicard and approximately $255 million related to a transfer to held-for-sale of a loan portfolio in Greece, approximately $230 million related to a non-provision transfer of reserves associated with deferred interest to other assets which includes deferred interest and approximately $220 million related to foreign currency translation. 2012 includes reductions of approximately $875 million related to the sale or transfer to held-for-sale of various U.S. loan portfolios.
	-5	Represents additional credit loss reserves for unfunded lending commitments and letters of credit recorded in Other liabilities on the Consolidated Balance Sheet.
Schedule of allowance for credit losses and investment in loans by portfolio segment	Allowance for Credit Losses and Investment in Loans at December 31, 2014
	In millions of dollars	Corporate			Consumer			Total
	Allowance for loan losses at beginning of period	$	2,584		$	17,064		$	19,648
	Charge-offs	(427		)	(10,681		)	(11,108		)
	Recoveries	139			1,996			2,135
	Replenishment of net charge-offs	288			8,685			8,973
	Net reserve releases	(133		)	(1,746		)	(1,879		)
	Net specific reserve releases	(20		)	(246		)	(266		)
	Other	(42		)	(1,467		)	(1,509		)
	Ending balance	$	2,389		$	13,605		$	15,994
	Allowance for loan losses
	Determined in accordance with ASC 450	$	2,110		$	9,673		$	11,783
	Determined in accordance with ASC 310-10-35	235			3,917			4,152
	Determined in accordance with ASC 310-30	44			15			59
	Total allowance for loan losses	$	2,389		$	13,605		$	15,994
	Loans, net of unearned income
	Loans collectively evaluated for impairment in accordance with ASC 450	$	267,271		$	350,199		$	617,470
	Loans individually evaluated for impairment in accordance with ASC 310-10-35	1,485			19,358			20,843
	Loans acquired with deteriorated credit quality in accordance with ASC 310-30	51			370			421
	Loans held at fair value	5,858			43			5,901
	Total loans, net of unearned income	$	274,665		$	369,970		$	644,635
	Allowance for Credit Losses and Investment in Loans at December 31, 2013
	In millions of dollars	Corporate			Consumer			Total
	Allowance for loan losses at beginning of period	$	2,776		$	22,679		$	25,455
	Charge-offs	(369		)	(12,400		)	(12,769		)
	Recoveries	168			2,138			2,306
	Replenishment of net charge-offs	201			10,262			10,463
	Net reserve releases	(199		)	(1,762		)	(1,961		)
	Net specific reserve releases	(1		)	(897		)	(898		)
	Other	8			(2,956		)	(2,948		)
	Ending balance	$	2,584		$	17,064		$	19,648
	Allowance for loan losses
	Determined in accordance with ASC 450	$	2,232		$	12,402		$	14,634
	Determined in accordance with ASC 310-10-35	268			4,633			4,901
	Determined in accordance with ASC 310-30	84			29			113
	Total allowance for loan losses	$	2,584		$	17,064		$	19,648
	Loans, net of unearned income
	Loans collectively evaluated for impairment in accordance with ASC 450	$	265,230		$	368,449		$	633,679
	Loans individually evaluated for impairment in accordance with ASC 310-10-35	2,222			23,793			26,015
	Loans acquired with deteriorated credit quality in accordance with ASC 310-30	117			632			749
	Loans held at fair value	4,072			957			5,029
	Total loans, net of unearned income	$	271,641		$	393,831		$	665,472
	Allowance for Credit Losses at December 31, 2012
	In millions of dollars	Corporate			Consumer			Total
	Allowance for loan losses at beginning of period	$	2,879		$	27,236		$	30,115
	Charge-offs	(640		)	(16,365		)	(17,005		)
	Recoveries	417			2,357			2,774
	Replenishment of net charge-offs	223			14,008			14,231
	Net reserve build (releases)	2			(1,910		)	(1,908		)
	Net specific reserve releases	(138		)	(1,727		)	(1,865		)
	Other	33			(920		)	(887		)
	Ending balance	$	2,776		$	22,679		$	25,455

GOODWILL_AND_INTANGIBLE_ASSETS1

GOODWILL AND INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Goodwill	The changes in Goodwill during 2014 and 2013 were as follows:
	In millions of dollars
	Balance at December 31, 2012	$	25,673
	Foreign exchange translation	$	(577	)
	Smaller acquisitions/divestitures, purchase accounting adjustments and other	(25		)
	Sale of Brazil Credicard	(62		)
	Balance at December 31, 2013	$	25,009
	Foreign exchange translation and other	$	(1,214	)
	Smaller acquisitions/divestitures, purchase accounting adjustments and other	(203		)
	Balance at December 31, 2014	$	23,592
Changes in Goodwill by segment	The changes in Goodwill by segment during 2014 and 2013 were as follows:
	In millions of dollars	Global Consumer Banking			Institutional Clients Group			Citi Holdings			Total
	Balance at December 31, 2012	$	14,539		$	10,981		$	153		$	25,673
	Goodwill disposed of during 2013 (1)	$	(82	)	$	—		$	—		$	(82	)
	Other (2)	(472		)	(113		)	3			$	(582	)
	Balance at December 31, 2013	$	13,985		$	10,868		$	156		$	25,009
	Goodwill disposed of during 2014 (3)	$	(86	)	$	(1	)	$	(116	)	$	(203	)
	Other (2)	(505		)	(711		)	2			$	(1,214	)
	Balance at December 31, 2014	$	13,394		$	10,156		$	42		$	23,592
	-1	Primarily related to the sale of Credicard. See Note 2 to the Consolidated Financial Statements.
	-2	Other changes in Goodwill primarily reflect foreign exchange effects on non-dollar-denominated goodwill and purchase accounting adjustments.
	-3	Primarily related to the sale of the Spain consumer operations and the agreement to sell the Japan retail banking business. See Note 2 to the Consolidated Financial Statements.
Goodwill by reporting units	The following table shows reporting units with goodwill balances as of December 31, 2014 and the fair value as a percentage of allocated book value as of the annual impairment test.
	In millions of dollars
	Reporting Unit(1)	Fair Value as a % of allocated book value		Goodwill
	North America Global Consumer Banking	260	%	$	6,756
	EMEA Global Consumer Banking	178		332
	Asia Global Consumer Banking	264		4,704
	Latin America Global Consumer Banking	214		1,602
	Banking	404		3,481
	Markets and Securities Services	200		6,675
	Latin America Retirement Services	193		42
	-1	Citi Holdings—Other is excluded from the table as there is no goodwill allocated to it.
Components of intangible assets	The components of intangible assets as of December 31, 2014 and December 31, 2013 were as follows:
		31-Dec-14									31-Dec-13
	In millions of dollars	Gross			Accumulated			Net			Gross			Accumulated			Net
		carrying			amortization			carrying			carrying			amortization			carrying
		amount						amount			amount						amount
	Purchased credit card relationships	$	7,626		$	6,294		$	1,332		$	7,552		$	6,006		$	1,546
	Core deposit intangibles	1,153			1,021			132			1,255			1,052			203
	Other customer relationships	579			331			248			675			389			286
	Present value of future profits	233			154			79			238			146			92
	Indefinite-lived intangible assets	290			—			290			323			—			323
	Other(1)	5,217			2,732			2,485			5,073			2,467			2,606
	Intangible assets (excluding MSRs)	$	15,098		$	10,532		$	4,566		$	15,116		$	10,060		$	5,056
	Mortgage servicing rights (MSRs) (2)	1,845			—			1,845			2,718			—			2,718
	Total intangible assets	$	16,943		$	10,532		$	6,411		$	17,834		$	10,060		$	7,774
	-1	Includes contract-related intangible assets.
	-2	For additional information on Citi’s MSRs, including the roll-forward from 2013 to 2014, see Note 22 to the Consolidated Financial Statements.
Changes in intangible assets	The changes in intangible assets during the 12 months ended December 31, 2014 were as follows:
		Net carrying															Net carrying
		amount at															amount at
	In millions of dollars	31-Dec-13			Acquisitions/			Amortization			Impairments			FX and			31-Dec-14
					divestitures									other (1)
	Purchased credit card relationships	$	1,546		$	110		$	(324	)	$	—		$	—		$	1,332
	Core deposit intangibles	203			(6		)	(59		)	—			(6		)	132
	Other customer relationships	286			14			(28		)	—			(24		)	248
	Present value of future profits	92			—			(12		)	—			(1		)	79
	Indefinite-lived intangible assets	323			(2		)	—			—			(31		)	290
	Other	2,606			157			(333		)	(2		)	57			2,485
	Intangible assets (excluding MSRs)	$	5,056		$	273		$	(756	)	$	(2	)	$	(5	)	$	4,566
	Mortgage servicing rights (MSRs) (2)	2,718															1,845
	Total intangible assets	$	7,774														$	6,411
	-1	Includes foreign exchange translation and purchase accounting adjustments.
	-2	For additional information on Citi’s MSRs, including the roll-forward from 2013 to 2014, see Note 22 to the Consolidated Financial Statements

DEBT_Tables

DEBT (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Short-Term Borrowings	Short-Term Borrowings
		2014					2013
	In millions of dollars	Balance			Weighted average coupon		Balance			Weighted average coupon
	Commercial paper
	Significant Citibank entities(1)	$	16,085		0.22	%	$	17,677		0.25	%
	Parent(2)	70			0.95		201			1.11
	Total Commercial paper	$	16,155		0.23	%	$	17,878		0.26	%
	Other borrowings (3)	$	42,180		0.53	%	$	41,066		0.87	%
	Total	$	58,335				$	58,944
	-1	Significant Citibank Entities consist of Citibank, N.A. units domiciled in the U.S., Western Europe, Hong Kong and Singapore.
	-2	Parent includes the parent holding company (Citigroup Inc.) and Citi’s broker-dealer subsidiaries that are consolidated into Citigroup.
	-3	Includes borrowings from the Federal Home Loan Banks and other market participants. At both December 31, 2014 and December 31, 2013, collateralized short-term advances from the Federal Home Loan Banks were $11.2 billion.
Schedule of Long-Term Debt	Long-Term Debt
					Balances at
					December 31,
	In millions of dollars	Weighted		Maturities	2014			2013
		average
		coupon
	Citigroup Inc.(1)
	Senior debt	3.85	%	2015-2098	$	122,323		$	124,857
	Subordinated debt(2)	4.48		2015-2044	25,464			28,039
	Trust preferred	6.9		2036-2067	1,725			3,908
	securities
	Bank(3)
	Senior debt	1.74		2015-2038	65,146			56,039
	Subordinated debt(2)	—		—	—			418
	Broker-dealer(4)
	Senior debt	4.06		2015-2039	8,399			7,831
	Subordinated debt(2)	2.07		2016-2037	23			24
	Total(5)	3.34	%		$	223,080		$	221,116
	Senior debt				$	195,868		$	188,727
	Subordinated debt(2)				25,487			28,481
	Trust preferred				1,725			3,908
	securities
	Total				$	223,080		$	221,116
	-1	Parent holding company, Citigroup Inc.
	-2	Includes notes that are subordinated within certain countries, regions or subsidiaries.
	-3	Represents the Significant Citibank Entities as well as other Citibank and Banamex entities. At December 31, 2014 and December 31, 2013, collateralized long-term advances from the Federal Home Loan Banks were $19.8 billion and $14.0 billion, respectively.
	-4	Represents broker-dealer subsidiaries that are consolidated into Citigroup Inc., the parent holding company.
	-5	Includes senior notes with carrying values of $87 million issued to outstanding Safety First Trusts at December 31, 2013. As of December 31, 2014, no amounts were outstanding to these trusts.
Aggregate annual maturities of long-term debt obligations	Aggregate annual maturities of long-term debt obligations (based on final maturity dates) including trust preferred securities are as follows:
	In millions of dollars	2015			2016			2017			2018			2019			Thereafter		Total
	Bank	$	14,459		$	21,248		$	14,190		$	9,128		$	2,146		$	3,975	$	65,146
	Broker-dealer	760			708			210			141			1,725			4,878		8,422
	Citigroup Inc.	15,851			20,172			25,849			12,748			18,246			56,646		149,512
	Total	$	31,070		$	42,128		$	40,249		$	22,017		$	22,117		$	65,499	$	223,080
Summary of outstanding trust preferred securities	The following table summarizes the Company’s outstanding trust preferred securities at December 31, 2014:
												Junior subordinated debentures owned by trust
	Trust	Issuance	Securities		Liquidation			Coupon		Common		Amount			Maturity	Redeemable
		date	issued		value(1)			rate(2)		shares						by issuer
										issued						beginning
										to parent
	In millions of dollars, except share amounts
	Citigroup Capital III	Dec. 1996	194,053		$	194		7.625	%	6,003		$	200		Dec. 1, 2036	Not redeemable
	Citigroup Capital XIII	Sept. 2010	89,840,000		2,246			7.875		1,000		2,246			Oct. 30, 2040	Oct. 30, 2015
	Citigroup Capital XVIII	Jun. 2007	99,901		156			6.829		50		156			June 28, 2067	June 28, 2017
	Total obligated				$	2,596						$	2,602
	Note: Distributions on the trust preferred securities and interest on the subordinated debentures are payable semiannually for Citigroup Capital III and Citigroup Capital XVIII and quarterly for Citigroup Capital XIII.
	-1	Represents the notional value received by investors from the trusts at the time of issuance.
	-2	In each case, the coupon rate on the subordinated debentures is the same as that on the trust preferred securities.

REGULATORY_CAPITAL_AND_CITIGRO1

REGULATORY CAPITAL AND CITIGROUP, INC. PARENT COMPANY INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2014
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following table sets forth Citigroup’s and Citibank, N.A.’s regulatory capital tiers, risk-weighted assets, quarterly adjusted average total assets, and capital ratios as of December 31, 2014 in accordance with current regulatory standards (reflecting Basel III Transition Arrangements):
	In millions of	Stated		Well		Citigroup(1)			Citibank,
	dollars, except ratios	minimum		capitalized					N.A.(1)
				minimum
	Common Equity Tier 1 Capital					$	166,984		$	129,135
	Tier 1 Capital					166,984			129,135
	Total Capital(2)					185,280			140,119
	Risk-weighted assets					1,275,012			946,333
	Quarterly adjusted average total assets (3)					1,849,297			1,367,444
	Common Equity Tier 1 Capital ratio	4	%	N/A		13.1		%	13.65		%
	Tier 1 Capital ratio	5.5		6	%	13.1			13.65
	Total Capital ratio	8		10		14.53			14.81
	Tier 1 Leverage ratio	4		5.0 (4)		9.03			9.44
	-1	As of December 31, 2014, Citigroup’s and Citibank, N.A.’s reportable Common Equity Tier 1 Capital, Tier 1 Capital, and Total Capital ratios were the lower derived under the Basel III Advanced Approaches framework.
	-2	Total Capital includes Tier 1 Capital and Tier 2 Capital.
	-3	Tier 1 Leverage ratio denominator.
	(4)    Applicable only to depository institutions.
	N/A  Not Applicable
Schedule of Capital Restrictions on Non Banking Subsidiaries	Citigroup also receives dividends from its non-bank subsidiaries. These non-bank subsidiaries are generally not subject to regulatory restrictions on dividends, although their ability to declare dividends can be restricted by capital considerations, as set forth in the table below.
	In millions of dollars
	Subsidiary	Jurisdiction	Net			Excess over
			capital or equivalent			minimum requirement
	Citigroup Global Markets Inc.	U.S. Securities and Exchange Commission Uniform Net Capital Rule (Rule 15c3-1)	$	5,521		$	4,376
	Citigroup Global Markets Limited	United Kingdom’s Prudential Regulatory Authority (PRA)	$	7,162		$	2,482
Citigroup Inc. Parent Company Only Statement of Comprehensive Income	Citigroup Inc. Parent Company Only Income Statement and Statement of Comprehensive Income
		Years ended December 31,
	In millions of dollars	2014			2013			2012
	Revenues
	Interest revenue	$	3,121		$	3,234		$	3,384
	Interest expense	4,437			5,559			6,573
	Net interest expense	$	(1,316	)	$	(2,325	)	$	(3,189	)
	Dividends from subsidiaries	8,900			13,044			20,780
	Non-interest revenue	247			139			613
	Total revenues, net of interest expense	$	7,831		$	10,858		$	18,204
	Total operating expenses	$	1,980		$	851		$	1,497
	Income before taxes and equity in undistributed income of subsidiaries	$	5,851		$	10,007		$	16,707
	Benefit for income taxes	(643		)	(1,637		)	(2,062		)
	Equity in undistributed income (loss) of subsidiaries	819			2,029			(11,228		)
	Parent company’s net income	$	7,313		$	13,673		$	7,541
	Comprehensive income
	Parent company’s net income	$	7,313		$	13,673		$	7,541
	Other comprehensive income (loss)	(4,083		)	(2,237		)	892
	Parent company’s comprehensive income	$	3,230		$	11,436		$	8,433
Citigroup Inc. Parent Company Only Income Statement	Citigroup Inc. Parent Company Only Income Statement and Statement of Comprehensive Income
		Years ended December 31,
	In millions of dollars	2014			2013			2012
	Revenues
	Interest revenue	$	3,121		$	3,234		$	3,384
	Interest expense	4,437			5,559			6,573
	Net interest expense	$	(1,316	)	$	(2,325	)	$	(3,189	)
	Dividends from subsidiaries	8,900			13,044			20,780
	Non-interest revenue	247			139			613
	Total revenues, net of interest expense	$	7,831		$	10,858		$	18,204
	Total operating expenses	$	1,980		$	851		$	1,497
	Income before taxes and equity in undistributed income of subsidiaries	$	5,851		$	10,007		$	16,707
	Benefit for income taxes	(643		)	(1,637		)	(2,062		)
	Equity in undistributed income (loss) of subsidiaries	819			2,029			(11,228		)
	Parent company’s net income	$	7,313		$	13,673		$	7,541
	Comprehensive income
	Parent company’s net income	$	7,313		$	13,673		$	7,541
	Other comprehensive income (loss)	(4,083		)	(2,237		)	892
	Parent company’s comprehensive income	$	3,230		$	11,436		$	8,433
Citigroup Inc. Parent Company Only Balance Sheet	Citigroup Inc. Parent Company Only Balance Sheet
		Years ended December 31,
	In millions of dollars	2014			2013
	Assets
	Cash and due from banks	$	125		$	233
	Trading account assets	604			184
	Investments	830			1,032
	Advances to subsidiaries	77,951			83,110
	Investments in subsidiaries	211,353			203,739
	Other assets (1)	110,908			106,170
	Total assets	$	401,771		$	394,468
	Liabilities
	Federal funds purchased and securities loaned or sold under agreements to repurchase	$	185		$	185
	Trading account liabilities	762			165
	Short-term borrowings	1,075			382
	Long-term debt	149,512			156,804
	Advances from subsidiaries other than banks	27,430			24,181
	Other liabilities	12,273			8,412
	Total liabilities	$	191,237		$	190,129
	Total equity	210,534			204,339
	Total liabilities and equity	$	401,771		$	394,468
	-1	Other assets included $42.7 billion of placements to Citibank, N.A. and its branches at December 31, 2014, of which $33.9 billion had a remaining term of less than 30 days. Other assets at December 31, 2013 included $43.3 billion of placements to Citibank, N.A. and its branches, of which $33.6 billion had a remaining term of less than 30 days.
Citigroup Inc. Parent Company Only Cash Flow Statement	Citigroup Inc. Parent Company Only Cash Flows Statement
		Years ended December 31,
	In millions of dollars	2014			2013			2012
	Net cash provided by (used in ) operating activities of continuing operations	$	5,940		$	(7,881	)	$	1,598
	Cash flows from investing activities of continuing operations
	Purchases of investments	$	—		$	—		$	(5,701	)
	Proceeds from sales of investments	41			385			37,056
	Proceeds from maturities of investments	155			233			4,286
	Changes in investments and advances—intercompany	(7,986		)	7,226			(397		)
	Other investing activities	5			4			994
	Net cash provided by investing activities of continuing operations	$	(7,785	)	$	7,848		$	36,238
	Cash flows from financing activities of continuing operations
	Dividends paid	$	(633	)	$	(314	)	$	(143	)
	Issuance of preferred stock	3,699			4,192			2,250
	Proceeds (repayments) from issuance of long-term debt—third-party, net	(3,636		)	(13,426		)	(33,434		)
	Net change in short-term borrowings and other advances—intercompany	3,297			11,402			(6,160		)
	Other financing activities	(990		)	(1,741		)	(199		)
	Net cash provided by (used in) financing activities of continuing operations	$	1,737		$	113		$	(37,686	)
	Net increase (decrease) in cash and due from banks	$	(108	)	$	80		$	150
	Cash and due from banks at beginning of period	233			153			3
	Cash and due from banks at end of period	$	125		$	233		$	153
	Supplemental disclosure of cash flow information for continuing operations
	Cash paid (received) during the year for
	Income taxes	$	235		$	(71	)	$	78
	Interest	5,632			6,514			7,883
	Note: With respect to the tables above, “Citigroup Inc. Parent Company Only” refers to the parent holding company Citigroup Inc., excluding consolidated subsidiaries. Citigroup Funding Inc. (CFI) was previously a first-tier subsidiary of Citigroup Inc., issuing commercial paper, medium-term notes and structured equity-linked and credit-linked notes. The debt of CFI was guaranteed by Citigroup Inc. On December 31, 2012, CFI was merged into Citigroup Inc., the parent holding company.

CHANGES_IN_ACCUMULATED_OTHER_C1

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	12 Months Ended
	Dec. 31, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Changes in each component of Accumulated Other Comprehensive Income (Loss)	Changes in each component of Citigroup’s Accumulated other comprehensive income (loss) for the three years ended December 31, 2014 are as follows:
	In millions of dollars	Net			Cash flow hedges (1)			Benefit plans (2)			Foreign			Accumulated
		unrealized									currency			other
		gains (losses)									translation			comprehensive income (loss)
		on investment securities									adjustment,
											net of hedges (CTA)(3)(4)
	Balance, December 31, 2011	$	(35	)	$	(2,820	)	$	(4,282	)	$	(10,651	)	$	(17,788	)
	Change, net of taxes (5)(6)	632			527			(988		)	721			892
	Balance, December 31, 2012	$	597		$	(2,293	)	$	(5,270	)	$	(9,930	)	$	(16,896	)
	Other comprehensive income before reclassifications	$	(1,962	)	$	512		$	1,098		$	(2,534	)	$	(2,886	)
	Increase (decrease) due to amounts reclassified from AOCI (7)	(275		)	536			183			205			649
	Change, net of taxes (7)	$	(2,237	)	$	1,048		$	1,281		$	(2,329	)	$	(2,237	)
	Balance, December 31, 2013	$	(1,640	)	$	(1,245	)	$	(3,989	)	$	(12,259	)	$	(19,133	)
	Other comprehensive income before reclassifications	$	1,790		$	85		$	(1,346	)	$	(4,946	)	$	(4,417	)
	Increase (decrease) due to amounts reclassified from AOCI	(93		)	251			176			—			334
	Change, net of taxes	$	1,697		$	336		$	(1,170	)	$	(4,946	)	$	(4,083	)
	Balance at December 31, 2014	$	57		$	(909	)	$	(5,159	)	$	(17,205	)	$	(23,216	)
	-1	Primarily driven by Citigroup’s pay fixed/receive floating interest rate swap programs that hedge the floating rates on liabilities.
	-2	Primarily reflects adjustments based on the quarterly actuarial valuations of the Company’s significant pension and postretirement plans, annual actuarial valuations of all other plans, and amortization of amounts previously recognized in other comprehensive income. Reflects the adoption of new mortality tables effective December 31, 2014 (see Note 8 to the Consolidated Financial Statements).
	-3	Primarily reflects the movements in (by order of impact) the Mexican peso, euro, Japanese yen, and Russian ruble against the U.S. dollar, and changes in related tax effects and hedges for the year ended December 31, 2014. Primarily reflects the movements in (by order of impact) the Japanese yen, Mexican peso, Australian dollar, and Indian rupee against the U.S. dollar, and changes in related tax effects and hedges for the year ended December 31, 2013. Primarily reflects the movements in (by order of impact) the Mexican peso, Japanese yen, euro, and Brazilian real against the U.S. dollar, and changes in related tax effects and hedges for the year ended December 31, 2012.
	-4	During 2014, $137 million ($84 million net of tax) was reclassified to reflect the allocation of foreign currency translation between net unrealized gains (losses) on investment securities to CTA.
	-5	Includes the after-tax impact of realized gains from the sales of minority investments: $672 million from the Company’s entire interest in Housing Development Finance Corporation Ltd. (HDFC); and $421 million from the Company’s entire interest in Shanghai Pudong Development Bank (SPDB).
	-6	The after-tax impact due to impairment charges and the loss related to Akbank included within the foreign currency translation adjustment, during 2012 was $667 million (see Note 14 to the Consolidated Financial Statements).
	-7	On December 20, 2013, the sale of Credicard was completed (see Note 2 to the Consolidated Financial Statements). The total impact to the gross CTA (net CTA including hedges) was a pretax loss of $314 million ($205 million net of tax).
Schedule of pretax and after-tax changes in each component of Accumulated other comprehensive income (loss)	The pretax and after-tax changes in each component of Accumulated other comprehensive income (loss) for the three years ended December 31, 2014 are as follows:
	In millions of dollars	Pretax			Tax effect			After-tax
	Balance, December 31, 2011	$	(25,807	)	$	8,019		$	(17,788	)
	Change in net unrealized gains (losses) on investment securities	1,001			(369		)	632
	Cash flow hedges	838			(311		)	527
	Benefit plans	(1,378		)	390			(988		)
	Foreign currency translation adjustment	12			709			721
	Change	$	473		$	419		$	892
	Balance, December 31, 2012	$	(25,334	)	$	8,438		$	(16,896	)
	Change in net unrealized gains (losses) on investment securities	(3,537		)	1,300			(2,237		)
	Cash flow hedges	1,673			(625		)	1,048
	Benefit plans	1,979			(698		)	1,281
	Foreign currency translation adjustment	(2,377		)	48			(2,329		)
	Change	$	(2,262	)	$	25		$	(2,237	)
	Balance, December 31, 2013	$	(27,596	)	$	8,463		$	(19,133	)
	Change in net unrealized gains (losses) on investment securities	2,704			(1,007		)	1,697
	Cash flow hedges	543			(207		)	336
	Benefit plans	(1,830		)	660			(1,170		)
	Foreign currency translation adjustment	(4,881		)	(65		)	(4,946		)
	Change	$	(3,464	)	$	(619	)	$	(4,083	)
	Balance, December 31, 2014	$	(31,060	)	$	7,844		$	(23,216	)
Summary of amounts reclassified out of Accumulated other comprehensive income (loss) into the Consolidated Statement of income	During the year ended December 31, 2014, the Company recognized a pretax loss of $542 million ($334 million net of tax) related to amounts reclassified out of Accumulated other comprehensive income (loss) into the Consolidated Statement of Income. See details in the table below:
			Increase (decrease) in AOCI due to amounts reclassified to Consolidated Statement of Income
	In millions of dollars		Year ended December 31, 2014
	Realized (gains) losses on sales of investments		$	(570	)
	OTTI gross impairment losses		424
	Subtotal, pretax		$	(146	)
	Tax effect		53
	Net realized (gains) losses on investment securities, after-tax(1)		$	(93	)
	Interest rate contracts		$	260
	Foreign exchange contracts		149
	Subtotal, pretax		$	409
	Tax effect		(158		)
	Amortization of cash flow hedges, after-tax(2)		$	251
	Amortization of unrecognized
	Prior service cost (benefit)		$	(40	)
	Net actuarial loss		243
	Curtailment/settlement impact (3)		76
	Subtotal, pretax		$	279
	Tax effect		(103		)
	Amortization of benefit plans, after-tax(3)		$	176
	Foreign currency translation adjustment		$	—
	Total amounts reclassified out of AOCI, pretax		$	542
	Total tax effect		(208		)
	Total amounts reclassified out of AOCI, after-tax		$	334
	-1	The pretax amount is reclassified to Realized gains (losses) on sales of investments, net and Gross impairment losses on the Consolidated Statement of Income. See Note 14 to the Consolidated Financial Statements for additional details.
	-2	See Note 23 to the Consolidated Financial Statements for additional details.
	-3	See Notes 1 and 8 to the Consolidated Financial Statements for additional details.
	During the year ended December 31, 2013, the Company recognized a pretax loss of $1,071 million ($649 million net of tax) related to amounts reclassified out of Accumulated other comprehensive income (loss) into the Consolidated Statement of Income. See details in the table below:
			Increase (decrease) in AOCI due to amounts reclassified to Consolidated Statement of Income
	In millions of dollars		Year ended December 31, 2013
	Realized (gains) losses on sales of investments		$	(748	)
	OTTI gross impairment losses		334
	Subtotal, pretax		$	(414	)
	Tax effect		139
	Net realized (gains) losses on investment securities, after-tax(1)		$	(275	)
	Interest rate contracts		$	700
	Foreign exchange contracts		176
	Subtotal, pretax		$	876
	Tax effect		(340		)
	Amortization of cash flow hedges, after-tax(2)		$	536
	Amortization of unrecognized
	Prior service cost (benefit)		$	—
	Net actuarial loss		271
	Curtailment/settlement impact(3)		44
	Cumulative effect of change in accounting policy(3)		(20		)
	Subtotal, pretax		$	295
	Tax effect		(112		)
	Amortization of benefit plans, after-tax(3)		$	183
	Foreign currency translation adjustment		$	205
	Total amounts reclassified out of AOCI, pretax		$	1,071
	Total tax effect		(422		)
	Total amounts reclassified out of AOCI, after-tax		$	649
	-1	The pretax amount is reclassified to Realized gains (losses) on sales of investments, net and Gross impairment losses on the Consolidated Statement of Income. See Note 14 to the Consolidated Financial Statements for additional details.
	-2	See Note 23 to the Consolidated Financial Statements for additional details.
	-3	See Notes 1 and 8 to the Consolidated Financial Statements for additional details.

PREFERRED_STOCK_Tables

PREFERRED STOCK (Tables)	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Summary of preferred stock outstanding	The following table summarizes the Company’s preferred stock outstanding at December 31, 2014 and December 31, 2013:
									Carrying value
									in millions of dollars
		Issuance date	Redeemable by issuer beginning	Dividend		Redemption		Number	December 31,		December 31,
				rate		price per depositary		of depositary	2014		2013
						share/preference share		shares
	Series AA(1)	25-Jan-08	15-Feb-18	8.125	%	$	25	3,870,330	$	97	$	97
	Series E(2)	28-Apr-08	30-Apr-18	8.4	%	1,000		121,254	121		121
	Series A(3)	29-Oct-12	30-Jan-23	5.95	%	1,000		1,500,000	1,500		1,500
	Series B(4)	13-Dec-12	15-Feb-23	5.9	%	1,000		750,000	750		750
	Series C(5)	26-Mar-13	22-Apr-18	5.8	%	25		23,000,000	575		575
	Series D(6)	30-Apr-13	15-May-23	5.35	%	1,000		1,250,000	1,250		1,250
	Series J(7)	19-Sep-13	30-Sep-23	7.125	%	25		38,000,000	950		950
	Series K(8)	31-Oct-13	15-Nov-23	6.875	%	25		59,800,000	1,495		1,495
	Series L(9)	12-Feb-14	12-Feb-19	6.875	%	25		19,200,000	480		—
	Series M(10)	30-Apr-14	15-May-24	6.3	%	1,000		1,750,000	1,750		—
	Series N(11)	29-Oct-14	15-Nov-19	5.8	%	1,000		1,500,000	1,500		—
									$	10,468	$	6,738
	-1	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on February 15, May 15, August 15 and November 15 when, as and if declared by the Citi Board of Directors.
	-2	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on April 30 and October 30 at a fixed rate until April 30, 2018, thereafter payable quarterly on January 30, April 30, July 30 and October 30 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-3	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on January 30 and July 30 at a fixed rate until January 30, 2023, thereafter payable quarterly on January 30, April 30, July 30 and October 30 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-4	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on February 15 and August 15 at a fixed rate until February 15, 2023, thereafter payable quarterly on February 15, May 15, August 15 and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-5	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on January 22, April 22, July 22 and October 22 when, as and if declared by the Citi Board of Directors.
	-6	Issued as depositary shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on May 15 and November 15 at a fixed rate until May 15, 2023, thereafter payable quarterly on February 15, May 15, August 15 and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-7	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on March 30, June 30, September 30 and December 30 at a fixed rate until September 30, 2023, thereafter payable quarterly on the same dates at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-8	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on February 15, May 15, August 15 and November 15 at a fixed rate until November 15, 2023, thereafter payable quarterly on the same dates at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-9	Issued as depositary shares, each representing a 1/1,000th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable quarterly on February 12, May 12, August 12 and November 12 at a fixed rate, in each case when, as and if declared by the Citi Board of Directors.
	-10	Issued as depository shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on May 15 and November 15 at a fixed rate until May 15, 2024, thereafter payable quarterly on February 15, May 15, August 15, and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.
	-11	Issued as depository shares, each representing a 1/25th interest in a share of the corresponding series of non-cumulative perpetual preferred stock. Dividends payable semi-annually on May 15 and November 15 at a fixed rate until, but excluding, November 15, 2019, and thereafter payable quarterly on February 15, May 15, August 15 and November 15 at a floating rate, in each case when, as and if declared by the Citi Board of Directors.

SECURITIZATIONS_AND_VARIABLE_I1

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES (Tables)	12 Months Ended
	Dec. 31, 2014
Variable Interest Entity
Schedule of consolidated and unconsolidated VIEs with which the Company holds significant variable interests	Citigroup’s involvement with consolidated and unconsolidated VIEs with which the Company holds significant variable interests or has continuing involvement through servicing a majority of the assets in a VIE, each as of December 31, 2014 and 2013, is presented below:
		As of December 31, 2014
											Maximum exposure to loss in significant unconsolidated VIEs (1)
											Funded exposures (2)				Unfunded exposures
	In millions of dollars	Total			Consolidated			Significant			Debt		Equity		Funding		Guarantees		Total
		involvement			VIE / SPE assets			unconsolidated			investments		investments		commitments		and
		with SPE						VIE assets (3)									derivatives
		assets
	Citicorp
	Credit card securitizations	$	60,211		$	60,211		$	—		$	—	$	—	$	—	$	—	$	—
	Mortgage securitizations (4)
	U.S. agency-sponsored	236,771			—			236,771			5,063		—		—		19		5,082
	Non-agency-sponsored	8,071			1,239			6,832			560		—		—		—		560
	Citi-administered asset-backed commercial paper conduits (ABCP)	29,181			29,181			—			—		—		—		—		—
	Collateralized debt obligations (CDOs)	3,382			—			3,382			45		—		—		—		45
	Collateralized loan obligations (CLOs)	13,099			—			13,099			1,692		—		—		—		1,692
	Asset-based financing	62,577			1,149			61,428			22,891		63		2,185		333		25,472
	Municipal securities tender option bond trusts (TOBs)	12,280			6,671			5,609			3		—		3,670		—		3,673
	Municipal investments	16,825			70			16,755			2,012		2,021		1,321		—		5,354
	Client intermediation	1,745			137			1,608			10		—		—		10		20
	Investment funds (5)	31,474			1,096			30,378			16		382		124		—		522
	Trust preferred securities	2,633			—			2,633			—		6		—		—		6
	Other	5,685			296			5,389			183		1,451		23		73		1,730
	Total	$	483,934		$	100,050		$	383,884		$	32,475	$	3,923	$	7,323	$	435	$	44,156
	Citi Holdings
	Credit card securitizations	$	292		$	60		$	232		$	—	$	—	$	—	$	—	$	—
	Mortgage securitizations
	U.S. agency-sponsored	28,077			—			28,077			150		—		—		91		241
	Non-agency-sponsored	9,817			65			9,752			17		—		—		1		18
	Collateralized debt obligations (CDOs)	2,235			—			2,235			174		—		—		86		260
	Collateralized loan obligations (CLOs)	1,020			—			1,020			54		—		—		—		54
	Asset-based financing	1,323			2			1,321			37		3		86		—		126
	Municipal investments	6,881			—			6,881			2		176		904		—		1,082
	Investment funds	518			—			518			—		—		—		—		—
	Other	2,613			2,613			—			—		—		—		—		—
	Total	$	52,776		$	2,740		$	50,036		$	434	$	179	$	990	$	178	$	1,781
	Total Citigroup	$	536,710		$	102,790		$	433,920		$	32,909	$	4,102	$	8,313	$	613	$	45,937
	(1)    The definition of maximum exposure to loss is included in the text that follows this table.
	-2	Included on Citigroup’s December 31, 2014 Consolidated Balance Sheet.
	-3	A significant unconsolidated VIE is an entity where the Company has any variable interest or continuing involvement considered to be significant, regardless of the likelihood of loss or the notional amount of exposure.
	-4	Citicorp mortgage securitizations also include agency and non-agency (private-label) re-securitization activities. These SPEs are not consolidated. See “Re-securitizations” below for further discussion.
	(5) Substantially all of the unconsolidated investment funds’ assets are related to retirement funds in Mexico managed by Citi. See “Investment Funds” below for further discussion.
		As of December 31, 2013
											Maximum exposure to loss in significant unconsolidated VIEs (1)
											Funded exposures (2)				Unfunded exposures
	In millions of dollars	Total			Consolidated			Significant			Debt		Equity		Funding		Guarantees		Total
		involvement			VIE / SPE assets			unconsolidated			investments		investments		commitments		and
		with SPE						VIE assets (3)									derivatives
		assets
	Citicorp
	Credit card securitizations	$	52,229		$	52,229		$	—		$	—	$	—	$	—	$	—	$	—
	Mortgage securitizations (4)
	U.S. agency-sponsored	239,204			—			239,204			3,583		—		—		36		3,619
	Non-agency-sponsored	7,711			598			7,113			583		—		—		—		583
	Citi-administered asset-backed commercial paper conduits (ABCP)	31,759			31,759			—			—		—		—		—		—
	Collateralized debt obligations (CDOs)	4,204			—			4,204			34		—		—		—		34
	Collateralized loan obligations (CLOs)	16,883			—			16,883			1,938		—		—		—		1,938
	Asset-based financing	45,884			971			44,913			17,341		74		1,004		195		18,614
	Municipal securities tender option bond trusts (TOBs)	12,716			7,039			5,677			29		—		3,881		—		3,910
	Municipal investments	15,962			223			15,739			1,846		2,073		1,173		—		5,092
	Client intermediation	1,778			195			1,583			145		—		—		—		145
	Investment funds (5)	32,324			3,094			29,230			191		264		81		—		536
	Trust preferred securities	4,822			—			4,822			—		51		—		—		51
	Other	2,439			225			2,214			143		649		20		78		890
Total	$	467,915		$	96,333		$	371,582		$	25,833	$	3,111	$	6,159	$	309	$	35,412
Citi Holdings
Credit card securitizations	$	1,867		$	1,448		$	419		$	—	$	—	$	—	$	—	$	—
Mortgage securitizations
U.S. agency-sponsored	73,549			—			73,549			549		—		—		77		626
Non-agency-sponsored	13,193			1,695			11,498			35		—		—		2		37
Student loan securitizations	1,520			1,520			—			—		—		—		—		—
Collateralized debt obligations (CDOs)	3,879			—			3,879			273		—		—		87		360
Collateralized loan obligations (CLOs)	2,733			—			2,733			358		—		—		111		469
Asset-based financing	3,508			3			3,505			629		3		258		—		890
Municipal investments	7,304			—			7,304			3		204		939		—		1,146
Investment funds	1,237			—			1,237			—		61		—		—		61
Other	4,494			4,434			60			—		—		—		—		—
Total	$	113,284		$	9,100		$	104,184		$	1,847	$	268	$	1,197	$	277	$	3,589
Total Citigroup	$	581,199		$	105,433		$	475,766		$	27,680	$	3,379	$	7,356	$	586	$	39,001
-1	The definition of maximum exposure to loss is included in the text that follows this table.
-2	Included on Citigroup’s December 31, 2013 Consolidated Balance Sheet.
-3	A significant unconsolidated VIE is an entity where the Company has any variable interest or continuing involvement considered to be significant, regardless of the likelihood of loss or the notional amount of exposure.
-4	Citicorp mortgage securitizations also include agency and non-agency (private-label) re-securitization activities. These SPEs are not consolidated. See “Re-securitizations” below for further discussion.
(5) Substantially all of the unconsolidated investment funds’ assets are related to retirement funds in Mexico managed by Citi. See “Investment Funds” below for further discussion.
Schedule of funding commitments of unconsolidated Variable Interest Entities	The following table presents the notional amount of liquidity facilities and loan commitments that are classified as funding commitments in the VIE tables above as of December 31, 2014 and 2013:
		December 31, 2014						December 31, 2013
		Liquidity			Loan			Liquidity			Loan
	In millions of dollars	facilities			commitments			facilities			commitments
	Citicorp
	Asset-based financing	$	5		$	2,180		$	5		$	999
	Municipal securities tender option bond trusts (TOBs)	3,670			—			3,881			—
	Municipal investments	—			1,321			—			1,173
	Investment funds	—			124			—			81
	Other	—			23			—			20
	Total Citicorp	$	3,675		$	3,648		$	3,886		$	2,273
	Citi Holdings
	Asset-based financing	$	—		$	86		$	—		$	258
	Municipal investments	—			904			—			939
	Total Citi Holdings	$	—		$	990		$	—		$	1,197
	Total Citigroup funding commitments	$	3,675		$	4,638		$	3,886		$	3,470
Schedule of carrying amounts and classifications of consolidated assets that are collateral for consolidated VIE and SPE obligations	The following table presents the carrying amounts and classifications of consolidated assets that are collateral for consolidated VIE obligations as of December 31, 2014 and 2013:
		December 31, 2014									December 31, 2013
	In billions of dollars	Citicorp			Citi Holdings			Citigroup			Citicorp		Citi Holdings		Citigroup
	Cash	$	0.1		$	0.2		$	0.3		$	0.2	$	0.2	$	0.4
	Trading account assets	0.7			—			0.7			1		—		1
	Investments	8			—			8			10.9		—		10.9
	Total loans, net	90.6			2.5			93.1			83.2		8.7		91.9
	Other	0.6			—			0.6			1.1		0.2		1.3
	Total assets	$	100		$	2.7		$	102.7		$	96.4	$	9.1	$	105.5
	Short-term borrowings	$	22.7		$	—		$	22.7		$	24.3	$	—	$	24.3
	Long-term debt	38.1			2			40.1			32.8		2		34.8
	Other liabilities	0.8			0.1			0.9			0.9		0.1		1
	Total liabilities	$	61.6		$	2.1		$	63.7		$	58	$	2.1	$	60.1
Schedule of significant interests in unconsolidated VIEs - balance sheet classification	The following table presents the carrying amounts and classification of significant variable interests in unconsolidated VIEs as of December 31, 2014 and 2013:
		December 31, 2014									December 31, 2013
	In billions of dollars	Citicorp			Citi Holdings			Citigroup			Citicorp		Citi Holdings		Citigroup
	Trading account assets	$	7.4		$	0.2		$	7.6		$	4.8	$	0.6	$	5.4
	Investments	2.4			0.2			2.6			3.7		0.4		4.1
	Total loans, net	24.9			0.1			25			18.2		0.6		18.8
	Other	1.8			0.2			2			2.2		0.5		2.7
	Total assets	$	36.5		$	0.7		$	37.2		$	28.9	$	2.1	$	31
Schedule of securitized credit card receivables	The following table reflects amounts related to the Company’s securitized credit card receivables as of December 31, 2014 and 2013:
		Citicorp						Citi Holdings
	In billions of dollars	December 31,			December 31, 2013			December 31,			December 31, 2013
		2014						2014
	Ownership interests in principal amount of trust credit card receivables
	Sold to investors via trust-issued securities	$	37		$	32.3		$	—		$	—
	Retained by Citigroup as trust-issued securities	10.1			8.1			—			1.3
	Retained by Citigroup via non-certificated interests	14.2			12.1			—			—
	Total ownership interests in principal amount of trust credit card receivables	$	61.3		$	52.5		$	—		$	1.3
Schedule of Master Trust liabilities (at par value)	Master Trust Liabilities (at par value)
	In billions of dollars	Dec. 31, 2014			Dec. 31, 2013
	Term notes issued to third parties	$	35.7		$	27.9
	Term notes retained by Citigroup affiliates	8.2			6.2
	Total Master Trust liabilities	$	43.9		$	34.1
Schedule of Omni Trust liabilities (at par value)	Omni Trust Liabilities (at par value)
	In billions of dollars	Dec. 31, 2014			Dec. 31, 2013
	Term notes issued to third parties	$	1.3		$	4.4
	Term notes retained by Citigroup affiliates	1.9			1.9
	Total Omni Trust liabilities	$	3.2		$	6.3
Schedule of changes in capitalized MSRs	The following table summarizes the changes in capitalized MSRs for the years ended December 31, 2014 and 2013:
	In millions of dollars	2014			2013
	Balance, beginning of year	$	2,718		$	1,942
	Originations	217			634
	Changes in fair value of MSRs due to changes in inputs and assumptions	(344		)	640
	Other changes (1)	(429		)	(496		)
	Sale of MSRs	(317		)	(2		)
	Balance, as of December 31	$	1,845		$	2,718
	-1	Represents changes due to customer payments and passage of time.
Schedule of fees received on servicing previously securitized mortgages	The Company receives fees during the course of servicing previously securitized mortgages. The amounts of these fees for the years ended December 31, 2014, 2013 and 2012 were as follows:
	In millions of dollars	2014			2013			2012
	Servicing fees	$	638		$	800		$	990
	Late fees	25			42			65
	Ancillary fees	56			100			122
	Total MSR fees	$	719		$	942		$	1,177
Citicorp
Variable Interest Entity
Schedule of securitized credit card receivables	The following table summarizes selected cash flow information related to Citicorp’s credit card securitizations for the years ended December 31, 2014, 2013 and 2012:
	In billions of dollars	2014			2013			2012
	Proceeds from new securitizations	$	12.5		$	11.5		$	0.5
	Pay down of maturing notes	(7.8		)	(2.1		)	(20.4		)
Schedule of cash flow information, mortgage securitizations	The following table summarizes selected cash flow information related to Citicorp mortgage securitizations for the years ended December 31, 2014, 2013 and 2012:
		2014						2013			2012
	In billions of dollars	U.S. agency-			Non-agency-			Agency- and			Agency- and
		sponsored			sponsored			non-agency-			non-agency-
		mortgages			mortgages			sponsored			sponsored
								mortgages			mortgages
	Proceeds from new securitizations	$	27.4		$	11.8		$	72.5		$	56.5
	Contractual servicing fees received	0.4			—			0.4			0.5
	Cash flows received on retained interests and other net cash flows	0.1			—			0.1			0.1
Schedule of key assumptions used in measuring fair value of retained interest at the date of sale or securitization of mortgage receivables	Key assumptions used in measuring the fair value of retained interests at the date of sale or securitization of mortgage receivables for the years ended December 31, 2014 and 2013 were as follows:
		December 31, 2014
				Non-agency-sponsored mortgages (1)
		U.S. agency-		Senior		Subordinated
		sponsored mortgages		interests		interests
	Discount rate	0.0% to 14.7%		1.4% to 6.6%		2.6% to 9.1%
	Weighted average discount rate	11	%	4.2	%	7.8	%
	Constant prepayment rate	0.0% to 23.1%		0.0% to 7.0%		0.5% to 8.9%
	Weighted average constant prepayment rate	6.2	%	5.4	%	3.2	%
	Anticipated net credit losses (2)	NM		40.0% to 67.1%		8.9% to 58.5%
	Weighted average anticipated net credit losses	NM		56.3	%	43.1	%
	Weighted average life	0.0 to 9.7 years		2.6 to 11.1 years		3.0 to 14.5 years
		December 31, 2013
				Non-agency-sponsored mortgages (1)
		U.S. agency-		Senior		Subordinated
		sponsored mortgages		interests		interests
	Discount rate	0.0% to 12.4%		2.3% to 4.3%		0.1% to 19.2%
	Weighted average discount rate	10.1	%	3.4	%	7.8	%
	Constant prepayment rate	0.0% to 21.4%		5.4% to 10.0%		0.1% to 11.2%
	Weighted average constant prepayment rate	5.5	%	7.2	%	7.5	%
	Anticipated net credit losses (2)	NM		47.2% to 53.0%		0.1% to 89.0%
	Weighted average anticipated net credit losses	NM		49.3	%	49.2	%
	Weighted average life	0.0 to 12.4 years		2.9 to 9.7 years		2.5 to 16.5 years
	-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
	-2	Anticipated net credit losses represent estimated loss severity associated with defaulted mortgage loans underlying the mortgage securitizations disclosed above. Anticipated net credit losses, in this instance, do not represent total credit losses incurred to date, nor do they represent credit losses expected on retained interests in mortgage securitizations.
	NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
Schedule of key assumptions used to value retained interests and sensitivity of adverse changes of 10% and 20%, mortgage securitizations	At December 31, 2014 and 2013, the key assumptions used to value retained interests, and the sensitivity of the fair value to adverse changes of 10% and 20% in each of the key assumptions, are set forth in the tables below. The negative effect of each change is calculated independently, holding all other assumptions constant. Because the key assumptions may not be independent, the net effect of simultaneous adverse changes in the key assumptions may be less than the sum of the individual effects shown below.
		December 31, 2014
				Non-agency-sponsored mortgages (1)
		U.S. agency-		Senior		Subordinated
		sponsored mortgages		interests		interests
	Discount rate	0.0% to 21.2%		1.1% to 17.7%		1.3% to 19.6%
	Weighted average discount rate	8	%	4.9	%	8.2	%
	Constant prepayment rate	6.0% to 41.4%		2.0% to 100.0%		0.5% to 16.2%
	Weighted average constant prepayment rate	14.7	%	10.1	%	7.2	%
	Anticipated net credit losses (2)	NM		0.0% to 92.4%		13.7% to 83.8%
	Weighted average anticipated net credit losses	NM		54.6	%	52.5	%
	Weighted average life	0.0 to 16.0 years		0.3 to 14.4 years		0.0 to 24.4 years
		December 31, 2013
				Non-agency-sponsored mortgages (1)
		U.S. agency-		Senior		Subordinated
		sponsored mortgages		interests		interests
	Discount rate	0.1% to 20.9%		0.5% to 17.4%		2.1% to 19.6%
	Weighted average discount rate	6.9	%	5.5	%	11.2	%
	Constant prepayment rate	6.2% to 30.4%		1.3% to 100.0%		1.4% to 23.1%
	Weighted average constant prepayment rate	11.1	%	6.4	%	7.4	%
	Anticipated net credit losses (2)	NM		0.1% to 80.0%		25.5% to 81.9%
	Weighted average anticipated net credit losses	NM		49.5	%	52.8	%
	Weighted average life	2.1 to 14.1 years		0.0 to 11.9 years		0.0 to 26.0 years
	-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
	-2	Anticipated net credit losses represent estimated loss severity associated with defaulted mortgage loans underlying the mortgage securitizations disclosed above. Anticipated net credit losses, in this instance, do not represent total credit losses incurred to date, nor do they represent credit losses expected on retained interests in mortgage securitizations.
	NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
					Non-agency-sponsored mortgages (1)
	In millions of dollars at December 31, 2014	U.S. agency-			Senior			Subordinated
		sponsored mortgages			interests			interests
	Carrying value of retained interests	$	2,224		$	285		$	554
	Discount rates
	Adverse change of 10%	$	(64	)	$	(5	)	$	(30	)
	Adverse change of 20%	(124		)	(9		)	(57		)
	Constant prepayment rate
	Adverse change of 10%	(86		)	(1		)	(9		)
	Adverse change of 20%	(165		)	(2		)	(18		)
	Anticipated net credit losses
	Adverse change of 10%	NM			(2		)	(9		)
	Adverse change of 20%	NM			(3		)	(16		)
					Non-agency-sponsored mortgages (1)
	In millions of dollars at December 31, 2013	U.S. agency-			Senior			Subordinated
		sponsored mortgages			interests			interests
	Carrying value of retained interests	$	2,519		$	293		$	429
	Discount rates
	Adverse change of 10%	$	(76	)	$	(6	)	$	(25	)
	Adverse change of 20%	(148		)	(11		)	(48		)
	Constant prepayment rate
	Adverse change of 10%	(96		)	(1		)	(7		)
	Adverse change of 20%	(187		)	(2		)	(14		)
	Anticipated net credit losses
	Adverse change of 10%	NM			(2		)	(7		)
	Adverse change of 20%	NM			(3		)	(14		)
	-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
	NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
Schedule of key assumptions for measuring fair value of retained interests at the date of sale or securitization of CDOs and CLOs	At December 31, 2014 and 2013, the key assumptions used to value retained interests in CLOs, and the sensitivity of the fair value to adverse changes of 10% and 20% are set forth in the tables below:
		31-Dec-14	31-Dec-13
	Discount rate	1.4% to 1.6%	1.5% to 1.6%
Schedule of sensitivity of adverse changes of 10% and 20% to discount rate, CDOs and CLOs	The key assumption used to value retained interests and the sensitivity of the fair value to adverse changes of 10% and 20% is set forth in the tables below for the following periods presented:
		Dec. 31, 2014	Dec. 31, 2013
	Discount rate	N/A	3.00%
	December 31, 2013
	In millions of dollars	Asset-based
		financing
	Carrying value of retained interests (1)	$	1,316
	Value of underlying portfolio
	Adverse change of 10%	$	(11	)
	Adverse change of 20%	(23		)
	-1	Citicorp held no retained interests in asset-based financings as of December 31, 2014.
	December 31, 2014
	In millions of dollars	CLO
	Carrying value of retained interests	$	1,539
	Value of underlying portfolio
	Adverse change of 10%	$	(9	)
	Adverse change of 20%	(18		)
	December 31, 2013
	In millions of dollars	CLO
	Carrying value of retained interests	$	1,333
	Value of underlying portfolio
	Adverse change of 10%	$	(7	)
	Adverse change of 20%	(14		)
Schedule of asset-based financing
		December 31, 2014
	In millions of dollars	Total			Maximum
		unconsolidated			exposure to
		VIE assets			unconsolidated VIEs
	Type
	Commercial and other real estate	$	25,978		$	9,426
	Corporate loans	460			473
	Airplanes, ships and other assets	34,990			15,573
	Total	$	61,428		$	25,472
		December 31, 2013
	In millions of dollars	Total			Maximum
		unconsolidated			exposure to
		VIE assets			unconsolidated VIEs
	Type
	Commercial and other real estate	$	14,042		$	3,902
	Corporate loans	2,221			1,754
	Airplanes, ships and other assets	28,650			12,958
	Total	$	44,913		$	18,614
Schedule of selected cash flow information related to asset-based financing	The following table summarizes selected cash flow information related to asset-based financings for the years ended December 31, 2014, 2013 and 2012:
	In billions of dollars	2014			2013			2012
	Proceeds from new securitizations	$	0.5		$	0.5		$	—
	Cash flows received on retained interest and other net cash flows	$	0.2		$	0.7		$	0.3
Citi Holdings
Variable Interest Entity
Schedule of securitized credit card receivables	The following table summarizes selected cash flow information related to Citi Holdings’ credit card securitizations for the years ended December 31, 2014, 2013 and 2012:
	In billions of dollars	2014			2013			2012
	Proceeds from new securitizations	$	0.1		$	0.2		$	1.7
	Pay down of maturing notes	—			(0.1		)	(0.1		)
Schedule of cash flow information, mortgage securitizations	The following table summarizes selected cash flow information related to Citi Holdings mortgage securitizations for the years ended December 31, 2014, 2013 and 2012:
		2014						2013			2012
	In billions of dollars	U.S. agency-			Non-agency-			U.S. agency-			U.S. agency-
		sponsored			sponsored			sponsored			sponsored
		mortgages			mortgages			mortgages			mortgages
	Proceeds from new securitizations	$	0.4		$	—		$	0.2		$	0.4
	Contractual servicing fees received	0.1			—			0.3			0.4
Schedule of key assumptions used to value retained interests and sensitivity of adverse changes of 10% and 20%, mortgage securitizations
		December 31, 2014
				Non-agency-sponsored mortgages (1)
		U.S. agency-		Senior		Subordinated
		sponsored mortgages		interests		interests (2)
	Discount rate	1.9% to 19.2%		5.1% to 47.1%		—
	Weighted average discount rate	13.7	%	36.3	%	—
	Constant prepayment rate	20.4% to 32.3%		6.7% to 20.0%		—
	Weighted average constant prepayment rate	23.9	%	16.6	%	—
	Anticipated net credit losses	NM		0.3% to 73.7%		—
	Weighted average anticipated net credit losses	NM		19.2	%	—
	Weighted average life	3.3 to 4.6 years		3.9 to 6.4 years		—
		December 31, 2013
				Non-agency-sponsored mortgages (1)
		U.S. agency-		Senior		Subordinated
		sponsored mortgages		interests		interests (2)
	Discount rate	0.0% to 49.3%		9.9	%	—
	Weighted average discount rate	9.5	%	9.9	%	—
	Constant prepayment rate	9.6% to 26.2%		12.3% to 27.3%		—
	Weighted average constant prepayment rate	20	%	15.6	%	—
	Anticipated net credit losses	NM		0.3	%	—
	Weighted average anticipated net credit losses	NM		0.3	%	—
	Weighted average life	2.3 to 7.6 years		5.2 years		—
	-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
	-2	Citi Holdings held no subordinated interests in mortgage securitizations as of December 31, 2014 and 2013.
	NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
					Non-agency-sponsored mortgages (1)
	In millions of dollars at December 31, 2014	U.S. agency-			Senior			Subordinated
		sponsored mortgages			interests			interests
	Carrying value of retained interests	$	150		$	25		$	—
	Discount rates
	Adverse change of 10%	$	(5	)	$	(2	)	$	—
	Adverse change of 20%	(10		)	(4		)	—
	Constant prepayment rate
	Adverse change of 10%	(7		)	(2		)	—
	Adverse change of 20%	(14		)	(3		)	—
	Anticipated net credit losses
	Adverse change of 10%	NM			(4		)	—
	Adverse change of 20%	NM			(7		)	—
					Non-agency-sponsored mortgages (1)
	In millions of dollars at December 31, 2013	U.S. agency-			Senior			Subordinated
		sponsored mortgages			interests			interests
	Carrying value of retained interests	$	585		$	50		$	—
	Discount rates
	Adverse change of 10%	$	(16	)	$	(3	)	$	—
	Adverse change of 20%	(32		)	(5		)	—
	Constant prepayment rate							—
	Adverse change of 10%	(33		)	(3		)	—
	Adverse change of 20%	(65		)	(6		)	—
	Anticipated net credit losses
	Adverse change of 10%	NM			(5		)	—
	Adverse change of 20%	NM			(11		)	—
	-1	Disclosure of non-agency-sponsored mortgages as senior and subordinated interests is indicative of the interests’ position in the capital structure of the securitization.
	NM Not meaningful. Anticipated net credit losses are not meaningful due to U.S. agency guarantees.
Schedule of key assumptions for measuring fair value of retained interests at the date of sale or securitization of CDOs and CLOs	At December 31, 2014 and 2013, the key assumptions used to value retained interests, and the sensitivity of the fair value to adverse changes of 10% and 20% are set forth in the tables below:
		December 31, 2014
		CDOs	CLOs
	Discount rate	44.7% to 49.2%	4.5% to 5.0%
		December 31, 2013
		CDOs	CLOs
	Discount rate	44.3% to 48.7%	4.5% to 5.0%
Schedule of sensitivity of adverse changes of 10% and 20% to discount rate, CDOs and CLOs
		December 31, 2014
	In millions of dollars	CDOs			CLOs
	Carrying value of retained interests	$	6		$	10
	Discount rates
	Adverse change of 10%	$	(1	)	$	—
	Adverse change of 20%	(2		)	—
		December 31, 2013
	In millions of dollars	CDOs			CLOs
	Carrying value of retained interests	$	19		$	31
	Discount rates
	Adverse change of 10%	$	(1	)	$	—
	Adverse change of 20%	(2		)	—
Schedule of asset-based financing
		December 31, 2014
	In millions of dollars	Total			Maximum
		unconsolidated			exposure to
		VIE assets			unconsolidated VIEs
	Type
	Commercial and other real estate	$	168		$	50
	Corporate loans	—			—
	Airplanes, ships and other assets	1,153			76
	Total	$	1,321		$	126
		December 31, 2013
	In millions of dollars	Total			Maximum
		unconsolidated			exposure to
		VIE assets			unconsolidated VIEs
	Type
	Commercial and other real estate	$	774		$	298
	Corporate loans	112			96
	Airplanes, ships and other assets	2,619			496
	Total	$	3,505		$	890
Schedule of selected cash flow information related to asset-based financing	The following table summarizes selected cash flow information related to asset-based financings for the years ended December 31, 2014, 2013 and 2012:
	In billions of dollars	2014			2013			2012
	Cash flows received on retained interest and other net cash flows	$	0.1		$	0.2		$	1.7
Schedule of sensitivity of adverse changes of 10% and 20% to discount rate, asset-based financing	At December 31, 2014 and 2013, the effects of adverse changes of 10% and 20% in the discount rate used to determine the fair value of retained interests are set forth in the tables below:
	December 31, 2013
	In millions of dollars	Asset-based
		financing
	Carrying value of retained interests (1)	$	95
	Value of underlying portfolio
	Adverse change of 10%	$	—
	Adverse change of 20%	—
	-1	Citi Holdings held no retained interests in asset-based financings as of December 31, 2014.

DERIVATIVES_ACTIVITIES_Tables

DERIVATIVES ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Notionals	Derivative Notionals
		Hedging instruments under						Other derivative instruments
		ASC 815(1)(2)
								Trading derivatives						Management hedges(3)
	In millions of dollars	December 31,			December 31,			December 31,			December 31,			December 31,		December 31,
		2014			2013			2014			2013			2014		2013
	Interest rate contracts
	Swaps	$	163,348		$	132,823		$	31,906,549		$	36,370,196		$	31,945	$	93,286
	Futures and forwards	—			20			7,044,990			6,129,742			42,305		61,398
	Written options	—			—			3,311,751			3,342,832			3,913		3,103
	Purchased options	—			—			3,171,056			3,240,990			4,910		3,185
	Total interest rate contract notionals	$	163,348		$	132,843		$	45,434,346		$	49,083,760		$	83,073	$	160,972
	Foreign exchange contracts
	Swaps	$	25,157		$	22,402		$	4,567,977		$	3,298,500		$	23,990	$	20,013
	Futures and forwards	73,219			79,646			2,154,773			1,982,303			7,069		14,226
	Written options	—			101			1,343,520			1,037,433			432		—
	Purchased options	—			106			1,363,382			1,029,872			432		71
	Total foreign exchange contract notionals	$	98,376		$	102,255		$	9,429,652		$	7,348,108		$	31,923	$	34,310
	Equity contracts
	Swaps	$	—		$	—		$	131,344		$	100,019		$	—	$	—
	Futures and forwards	—			—			30,510			23,161			—		—
	Written options	—			—			305,627			333,945			—		—
	Purchased options	—			—			275,216			266,570			—		—
	Total equity contract notionals	$	—		$	—		$	742,697		$	723,695		$	—	$	—
	Commodity and other contracts
	Swaps	$	—		$	—		$	90,817		$	81,112		$	—	$	—
	Futures and forwards	1,089			—			106,021			98,265			—		—
	Written options	—			—			104,581			100,482			—		—
	Purchased options	—			—			95,567			97,626			—		—
	Total commodity and other contract notionals	$	1,089		$	—		$	396,986		$	377,485		$	—	$	—
	Credit derivatives(4)
	Protection sold	$	—		$	—		$	1,063,858		$	1,143,363		$	—	$	—
	Protection purchased	—			95			1,100,369			1,195,223			16,018		19,744
	Total credit derivatives	$	—		$	95		$	2,164,227		$	2,338,586		$	16,018	$	19,744
	Total derivative notionals	$	262,813		$	235,193		$	58,167,908		$	59,871,634		$	131,014	$	215,026
	-1	The notional amounts presented in this table do not include hedge accounting relationships under ASC 815 where Citigroup is hedging the foreign currency risk of a net investment in a foreign operation by issuing a foreign-currency-denominated debt instrument. The notional amount of such debt was $3,752 million and $6,450 million at December 31, 2014 and December 31, 2013, respectively.
	-2	Derivatives in hedge accounting relationships accounted for under ASC 815 are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities on the Consolidated Balance Sheet.
	-3	Management hedges represent derivative instruments used to mitigate certain economic risks, but for which hedge accounting is not applied. These derivatives are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities on the Consolidated Balance Sheet.
	-4	Credit derivatives are arrangements designed to allow one party (protection buyer) to transfer the credit risk of a “reference asset” to another party (protection seller). These arrangements allow a protection seller to assume the credit risk associated with the reference asset without directly purchasing that asset. The Company enters into credit derivative positions for purposes such as risk management, yield enhancement, reduction of credit concentrations and diversification of overall risk.
Derivative Mark-to-Market (MTM) Receivables/Payables
	In millions of dollars at December 31, 2014	Derivatives classified						Derivatives classified
		in Trading account						in Other
		assets / liabilities(1)(2)(3)						assets / liabilities(2)(3)
	Derivatives instruments designated as ASC 815 hedges	Assets			Liabilities			Assets			Liabilities
	Over-the-counter	$	1,508		$	204		$	3,117		$	414
	Cleared	4,300			868			—			25
	Interest rate contracts	$	5,808		$	1,072		$	3,117		$	439
	Over-the-counter	$	3,885		$	743		$	678		$	588
	Foreign exchange contracts	$	3,885		$	743		$	678		$	588
	Total derivative instruments designated as ASC 815 hedges	$	9,693		$	1,815		$	3,795		$	1,027
	Derivatives instruments not designated as ASC 815 hedges
	Over-the-counter	$	376,778		$	359,689		$	106		$	—
	Cleared	255,847			261,499			6			21
	Exchange traded	20			22			141			164
	Interest rate contracts	$	632,645		$	621,210		$	253		$	185
	Over-the-counter	$	151,736		$	157,650		$	—		$	17
	Cleared	366			387			—			—
	Exchange traded	7			46			—			—
	Foreign exchange contracts	$	152,109		$	158,083		$	—		$	17
	Over-the-counter	$	20,425		$	28,333		$	—		$	—
	Cleared	16			35			—			—
	Exchange traded	4,311			4,101			—			—
	Equity contracts	$	24,752		$	32,469		$	—		$	—
	Over-the-counter	$	19,943		$	23,103		$	—		$	—
	Exchange traded	3,577			3,083			—			—
	Commodity and other contracts	$	23,520		$	26,186		$	—		$	—
	Over-the-counter	$	39,412		$	39,439		$	265		$	384
	Cleared	4,106			3,991			13			171
	Credit derivatives(4)	$	43,518		$	43,430		$	278		$	555
	Total derivatives instruments not designated as ASC 815 hedges	$	876,544		$	881,378		$	531		$	757
	Total derivatives	$	886,237		$	883,193		$	4,326		$	1,784
	Cash collateral paid/received(5)(6)	$	6,523		$	9,846		$	123		$	7
	Less: Netting agreements(7)	(777,178		)	(777,178		)	—			—
	Less: Netting cash collateral received/paid(8)	(47,625		)	(47,769		)	(1,791		)	(15		)
	Net receivables/payables included on the consolidated balance sheet(9)	$	67,957		$	68,092		$	2,658		$	1,776
	Additional amounts subject to an enforceable master netting agreement but not offset on the Consolidated Balance Sheet
	Less: Cash collateral received/paid	$	(867	)	$	(11	)	$	—		$	—
	Less: Non-cash collateral received/paid	(10,043		)	(6,264		)	(1,293		)	—
	Total net receivables/payables(9)	$	57,047		$	61,817		$	1,365		$	1,776
	-1	The trading derivatives fair values are presented in Note 13 to the Consolidated Financial Statements.
	-2	Derivative mark-to-market receivables/payables related to management hedges are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities.
	-3	Over-the-counter (OTC) derivatives are derivatives executed and settled bilaterally with counterparties without the use of an organized exchange or central clearing house. Cleared derivatives include derivatives executed bilaterally with a counterparty in the OTC market but then novated to a central clearing house, whereby the central clearing house becomes the counterparty to both of the original counterparties. Exchange traded derivatives include derivatives executed directly on an organized exchange that provides pre-trade price transparency.
	-4	The credit derivatives trading assets comprise $18,430 million related to protection purchased and $25,088 million related to protection sold as of December 31, 2014. The credit derivatives trading liabilities comprise $25,972 million related to protection purchased and $17,458 million related to protection sold as of December 31, 2014.
	-5	For the trading account assets/liabilities, reflects the net amount of the $54,292 million and $57,471 million of gross cash collateral paid and received, respectively. Of the gross cash collateral paid, $47,769 million was used to offset trading derivative liabilities and, of the gross cash collateral received, $47,625 million was used to offset trading derivative assets.
	-6	For cash collateral paid with respect to non-trading derivative liabilities, reflects the net amount of $138 million the gross cash collateral received, of which $15 million is netted against OTC non-trading derivative positions within Other liabilities. For cash collateral received with respect to non-trading derivative liabilities, reflects the net amount of $1,798 million of the gross cash collateral received, of which $1,791 million is netted against OTC non-trading derivative positions within Other assets.
	-7	Represents the netting of derivative receivable and payable balances with the same counterparty under enforceable netting agreements. Approximately $510 billion, $264 billion and $3 billion of the netting against trading account asset/liability balances is attributable to each of the OTC, cleared and exchange traded derivatives, respectively.
	-8	Represents the netting of cash collateral paid and received by counterparty under enforceable credit support agreements. Substantially all cash collateral received is netted against OTC derivative assets. Cash collateral paid of approximately $46 billion and $2 billion is netted against each of the OTC and cleared derivative liabilities, respectively.
	-9	The net receivables/payables include approximately $11 billion derivative asset and $10 billion of derivative liability fair values not subject to enforceable master netting agreements.
	In millions of dollars at December 31, 2013	Derivatives classified in Trading						Derivatives classified in Other assets / liabilities(2)(3)
		account assets / liabilities(1)(2)(3)
	Derivatives instruments designated as ASC 815 hedges	Assets			Liabilities			Assets			Liabilities
	Over-the-counter	$	956		$	306		$	3,082		$	854
	Cleared	2,505			585			5			—
	Interest rate contracts	$	3,461		$	891		$	3,087		$	854
	Over-the-counter	$	1,540		$	1,244		$	989		$	293
	Foreign exchange contracts	$	1,540		$	1,244		$	989		$	293
	Over-the-counter	$	—		$	—		$	—		$	2
	Credit derivatives	$	—		$	—		$	—		$	2
	Total derivative instruments designated as ASC 815 hedges	$	5,001		$	2,135		$	4,076		$	1,149
	Derivatives instruments not designated as ASC 815 hedges
	Over-the-counter	$	313,772		$	297,115		$	37		$	9
	Cleared	311,114			319,190			27			5
	Exchange traded	33			30			—			—
Interest rate contracts	$	624,919		$	616,335		$	64		$	14
Over-the-counter	$	89,847		$	86,147		$	79		$	3
Cleared	1,119			1,191			—			—
Exchange traded	48			55			—			—
Foreign exchange contracts	$	91,014		$	87,393		$	79		$	3
Over-the-counter	$	19,080		$	28,458		$	—		$	—
Exchange traded	5,797			5,834			—			—
Equity contracts	$	24,877		$	34,292		$	—		$	—
Over-the-counter	$	7,921		$	9,059		$	—		$	—
Exchange traded	1,161			1,111			—			—
Commodity and other contracts	$	9,082		$	10,170		$	—		$	—
Over-the-counter	$	38,496		$	38,247		$	71		$	563
Cleared	1,850			2,547			—			—
Credit derivatives(4)	$	40,346		$	40,794		$	71		$	563
Total Derivatives instruments not designated as ASC 815 hedges	$	790,238		$	788,984		$	214		$	580
Total derivatives	$	795,239		$	791,119		$	4,290		$	1,729
Cash collateral paid/received(5)(6)	$	6,073		$	8,827		$	82		$	282
Less: Netting agreements(7)	(713,598		)	(713,598		)	—			—
Less: Netting cash collateral received/paid(8)	(34,893		)	(39,094		)	(2,951		)	—
Net receivables/payables included on the Consolidated Balance Sheet(9)	$	52,821		$	47,254		$	1,421		$	2,011
Additional amounts subject to an enforceable master netting agreement but not offset on the Consolidated Balance Sheet
Less: Cash collateral received/paid	$	(365	)	$	(5	)	$	—		$	—
Less: Non-cash collateral received/paid	(7,478		)	(3,345		)	(341		)	—
Total net receivables/payables(9)	$	44,978		$	43,904		$	1,080		$	2,011
-1	The trading derivatives fair values are presented in Note 13 to the Consolidated Financial Statements.
-2	Derivative mark-to-market receivables/payables related to management hedges are recorded in either Other assets/Other liabilities or Trading account assets/Trading account liabilities.
-3	Over-the-counter (OTC) derivatives include derivatives executed and settled bilaterally with counterparties without the use of an organized exchange or central clearing house. Cleared derivatives include derivatives executed bilaterally with a counterparty in the OTC market but then novated to a central clearing house, whereby the central clearing house becomes the counterparty to both of the original counterparties. Exchange traded derivatives include derivatives executed directly on an organized exchange that provides pre-trade price transparency.
-4	The credit derivatives trading assets comprise $13,673 million related to protection purchased and $26,673 million related to protection sold as of December 31, 2013. The credit derivatives trading liabilities comprise $28,158 million related to protection purchased and $12,636 million related to protection sold as of December 31, 2013.
-5	For the trading account assets/liabilities, reflects the net amount of the $45,167 million and $43,720 million of gross cash collateral paid and received, respectively. Of the gross cash collateral paid, $39,094 million was used to offset derivative liabilities and, of the gross cash collateral received, $34,893 million was used to offset derivative assets.
-6	For cash collateral received with respect to non-trading derivative liabilities, reflects the net amount of $3,233 million of gross cash collateral received of which $2,951 million is netted against non-trading derivative positions within other assets.
-7	Represents the netting of derivative receivable and payable balances with the same counterparty under enforceable netting agreements. Approximately $392 billion, $317 billion and $5 billion of the netting against trading account asset/liability balances is attributable to each of the OTC, cleared and exchange-traded derivatives, respectively.
-8	Represents the netting of cash collateral paid and received by counterparty under enforceable credit support agreements. Substantially all cash collateral received is netted against OTC derivative assets. Cash collateral paid of approximately $33 billion and $6 billion is netted against OTC and cleared derivative liabilities, respectively.
-9	The net receivables/payables include approximately $16 billion of both derivative asset and liability fair values not subject to enforceable master netting agreements.
Derivative gain (losses)
Schedule of pretax change in Accumulated other comprehensive income (loss) from cash flow hedges	The pretax change in Accumulated other comprehensive income (loss) from cash flow hedges is presented below:
		Year ended December 31,
	In millions of dollars	2014			2013			2012
	Effective portion of cash flow hedges included in AOCI
	Interest rate contracts	$	299		$	749		$	(322	)
	Foreign exchange contracts	(167		)	34			143
	Credit derivatives	2			14			—
	Total effective portion of cash flow hedges included in AOCI	$	134		$	797		$	(179	)
	Effective portion of cash flow hedges reclassified from AOCI to earnings
	Interest rate contracts	$	(260	)	$	(700	)	$	(837	)
	Foreign exchange contracts	(149		)	(176		)	(180		)
	Total effective portion of cash flow hedges reclassified from AOCI to earnings(1)	$	(409	)	$	(876	)	$	(1,017	)
	-1	Included primarily in Other revenue and Net interest revenue on the Consolidated Income Statement.
Schedule of key characteristics of credit derivative portfolio	The following tables summarize the key characteristics of Citi’s credit derivatives portfolio by counterparty and derivative form as of December 31, 2014 and December 31, 2013:
		Fair values						Notionals
	In millions of dollars at December 31, 2014	Receivable(1)			Payable(2)			Protection			Protection
								purchased			sold
	By industry/counterparty
	Banks	$	24,828		$	23,189		$	574,764		$	604,700
	Broker-dealers	8,093			9,309			204,542			199,693
	Non-financial	91			113			3,697			1,595
	Insurance and other financial institutions	10,784			11,374			333,384			257,870
	Total by industry/counterparty	$	43,796		$	43,985		$	1,116,387		$	1,063,858
	By instrument
	Credit default swaps and options	$	42,930		$	42,201		$	1,094,199		$	1,054,671
	Total return swaps and other	866			1,784			22,188			9,187
	Total by instrument	$	43,796		$	43,985		$	1,116,387		$	1,063,858
	By rating
	Investment grade	$	17,432		$	17,182		$	824,831		$	786,848
	Non-investment grade	26,364			26,803			291,556			277,010
	Total by rating	$	43,796		$	43,985		$	1,116,387		$	1,063,858
	By maturity
	Within 1 year	$	4,356		$	4,278		$	250,489		$	229,502
	From 1 to 5 years	34,692			35,160			790,251			772,001
	After 5 years	4,748			4,547			75,647			62,355
	Total by maturity	$	43,796		$	43,985		$	1,116,387		$	1,063,858
	-1	The fair value amount receivable is composed of $18,708 million under protection purchased and $25,088 million under protection sold.
	-2	The fair value amount payable is composed of $26,527 million under protection purchased and $17,458 million under protection sold.
		Fair values						Notionals
	In millions of dollars at December 31, 2013	Receivable(1)			Payable(2)			Protection			Protection
								purchased			sold
	By industry/counterparty
	Banks	$	24,992		$	23,455		$	739,646		$	727,748
	Broker-dealers	8,840			9,820			254,250			224,073
	Non-financial	138			162			4,930			2,820
	Insurance and other financial institutions	6,447			7,922			216,236			188,722
	Total by industry/counterparty	$	40,417		$	41,359		$	1,215,062		$	1,143,363
	By instrument
	Credit default swaps and options	$	40,233		$	39,930		$	1,201,716		$	1,141,864
	Total return swaps and other	184			1,429			13,346			1,499
	Total by instrument	$	40,417		$	41,359		$	1,215,062		$	1,143,363
	By rating
	Investment grade	$	17,150		$	17,174		$	812,918		$	752,640
	Non-investment grade	23,267			24,185			402,144			390,723
	Total by rating	$	40,417		$	41,359		$	1,215,062		$	1,143,363
	By maturity
	Within 1 year	$	2,901		$	3,262		$	254,305		$	221,562
	From 1 to 5 years	31,674			32,349			883,879			853,391
	After 5 years	5,842			5,748			76,878			68,410
	Total by maturity	$	40,417		$	41,359		$	1,215,062		$	1,143,363
	-1	The fair value amount receivable is composed of $13,744 million under protection purchased and $26,673 million under protection sold.
	-2	The fair value amount payable is composed of $28,723 million under protection purchased and $12,636 million under protection sold.
Fair value hedges
Derivative gain (losses)
Schedule of gains (losses) on derivatives not designated in a qualifying hedging relationship recognized in Other revenue and gains (losses) on fair value hedges	The following table summarizes the gains (losses) on the Company’s fair value hedges for the years ended December 31, 2014 and 2013 and 2012:
		Gains (losses) on fair value hedges(1)
		Year ended December 31,
	In millions of dollars	2014			2013			2012
	Gain (loss) on the derivatives in designated and qualifying fair value hedges
	Interest rate contracts	$	1,546		$	(3,288	)	$	122
	Foreign exchange contracts	1,367			265			377
	Commodity contracts	(221		)	—			—
	Total gain (loss) on the derivatives in designated and qualifying fair value hedges	$	2,692		$	(3,023	)	$	499
	Gain (loss) on the hedged item in designated and qualifying fair value hedges
	Interest rate hedges	$	(1,496	)	$	3,204		$	(371	)
	Foreign exchange hedges	(1,422		)	(185		)	(331		)
	Commodity hedges	250			—			—
	Total gain (loss) on the hedged item in designated and qualifying fair value hedges	$	(2,668	)	$	3,019		$	(702	)
	Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges
	Interest rate hedges	$	53		$	(84	)	$	(249	)
	Foreign exchange hedges	(16		)	(4		)	16
	Total hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	$	37		$	(88	)	$	(233	)
	Net gain (loss) excluded from assessment of the effectiveness of fair value hedges
	Interest rate contracts	$	(3	)	$	—		$	—
	Foreign exchange contracts(2)	(39		)	84			30
	Commodity hedges(2)	29			—			—
	Total net gain (loss) excluded from assessment of the effectiveness of fair value hedges	$	(13	)	$	84		$	30
	-1	Amounts are included in Other revenue on the Consolidated Statement of Income. The accrued interest income on fair value hedges is recorded in Net interest revenue and is excluded from this table.
	-2	Amounts relate to the premium associated with forward contracts (differential between spot and contractual forward rates). These amounts are excluded from the assessment of hedge effectiveness and are reflected directly in earnings.
Derivatives not designated in a qualifying hedging relationship
Derivative gain (losses)
Schedule of gains (losses) on derivatives not designated in a qualifying hedging relationship recognized in Other revenue and gains (losses) on fair value hedges	The amounts recognized in Other revenue in the Consolidated Statement of Income for the years ended December 31, 2014, 2013 and 2012 related to derivatives not designated in a qualifying hedging relationship are shown below. The table below does not include any offsetting gains/losses on the economically hedged items to the extent such amounts are also recorded in Other revenue.
		Gains (losses) included in Other revenue
		Year ended December 31,
	In millions of dollars	2014			2013			2012
	Interest rate contracts	$	291		$	(376	)	$	(427	)
	Foreign exchange	(2,894		)	221			182
	Credit derivatives	(135		)	(595		)	(1,022		)
	Total Citigroup	$	(2,738	)	$	(750	)	$	(1,267	)

FAIR_VALUE_MEASUREMENT_Tables

FAIR VALUE MEASUREMENT (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of CVA and FVA applied to fair value of derivative instruments	The table below summarizes the CVA and FVA applied to the fair value of derivative instruments for the periods indicated:
		Credit and funding valuation adjustments
		contra-liability (contra-asset)
	In millions of dollars	December 31,			December 31,
		2014			2013
	Counterparty CVA	$	(1,853	)	$	(1,733	)
	Asset FVA	(518		)	—
	Citigroup (own-credit) CVA	580			651
	Liability FVA	19			—
	Total CVA—derivative instruments (1)	$	(1,772	)	$	(1,082	)
	-1	FVA is included with CVA for presentation purposes.
Schedule of pretax gains (losses) related to changes in CVA, FVA and DVA	The table below summarizes pretax gains (losses) related to changes in CVA on derivative instruments, net of hedges, FVA on derivatives and debt valuation adjustments (DVA) on Citi’s own fair value option (FVO) liabilities for the periods indicated:
		Credit/funding/debt valuation
		adjustments gain (loss)
	In millions of dollars	2014			2013			2012
	Counterparty CVA	$	(43	)	$	291		$	805
	Asset FVA	(518		)	—			—
	Own-credit CVA	(65		)	(223		)	(1,126		)
	Liability FVA	19			—			—
	Total CVA—derivative instruments	$	(607	)	$	68		$	(321	)
	DVA related to own FVO liabilities	$	217		$	(410	)	$	(2,009	)
	Total CVA and DVA (1)	$	(390	)	$	(342	)	$	(2,330	)
	-1	FVA is included with CVA for presentation purposes.
Items measured at fair value on a recurring basis	Fair Value Levels
	In millions of dollars at December 31, 2014	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
											inventory						balance
	Assets
	Federal funds sold and securities borrowed or purchased under agreements to resell	$	—		$	187,922		$	3,398		$	191,320		$	(47,129	)	$	144,191
	Trading non-derivative assets
	Trading mortgage-backed securities
	U.S. government-sponsored agency guaranteed	$	—		$	25,968		$	1,085		$	27,053		$	—		$	27,053
	Residential	—			2,158			2,680			4,838			—			4,838
	Commercial	—			3,903			440			4,343			—			4,343
	Total trading mortgage-backed securities	$	—		$	32,029		$	4,205		$	36,234		$	—		$	36,234
	U.S. Treasury and federal agency securities	$	15,991		$	4,483		$	—		$	20,474		$	—		$	20,474
	State and municipal	—			3,161			241			3,402			—			3,402
	Foreign government	39,332			26,736			206			66,274			—			66,274
	Corporate	—			25,640			820			26,460			—			26,460
	Equity securities	51,346			4,281			2,219			57,846			—			57,846
	Asset-backed securities	—			1,252			3,294			4,546			—			4,546
	Other trading assets	—			9,221			4,372			13,593			—			13,593
	Total trading non-derivative assets	$	106,669		$	106,803		$	15,357		$	228,829		$	—		$	228,829
	Trading derivatives
	Interest rate contracts	$	74		$	634,318		$	4,061		$	638,453
	Foreign exchange contracts	—			154,744			1,250			155,994
	Equity contracts	2,748			19,969			2,035			24,752
	Commodity contracts	647			21,850			1,023			23,520
	Credit derivatives	—			40,618			2,900			43,518
	Total trading derivatives	$	3,469		$	871,499		$	11,269		$	886,237
	Cash collateral paid (3)										$	6,523
	Netting agreements													$	(777,178	)
	Netting of cash collateral received (7)													(47,625		)
	Total trading derivatives	$	3,469		$	871,499		$	11,269		$	892,760		$	(824,803	)	$	67,957
	Investments
	Mortgage-backed securities
	U.S. government-sponsored agency guaranteed	$	—		$	36,053		$	38		$	36,091		$	—		$	36,091
	Residential	—			8,355			8			8,363			—			8,363
	Commercial	—			553			1			554			—			554
	Total investment mortgage-backed securities	$	—		$	44,961		$	47		$	45,008		$	—		$	45,008
	U.S. Treasury and federal agency securities	$	110,710		$	12,974		$	6		$	123,690		$	—		$	123,690
	State and municipal	$	—		$	10,519		$	2,180		$	12,699		$	—		$	12,699
	Foreign government	39,014			51,005			678			90,697			—			90,697
	Corporate	5			11,480			672			12,157			—			12,157
	Equity securities	1,770			274			681			2,725			—			2,725
	Asset-backed securities	—			11,957			549			12,506			—			12,506
	Other debt securities	—			661			—			661			—			661
	Non-marketable equity securities	—			233			2,525			2,758			—			2,758
	Total investments	$	151,499		$	144,064		$	7,338		$	302,901		$	—		$	302,901
	In millions of dollars at December 31, 2014	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
											inventory						balance
	Loans(4)	$	—		$	2,793		$	3,108		$	5,901		$	—		$	5,901
	Mortgage servicing rights	—			—			1,845			1,845			—			1,845
	Non-trading derivatives and other financial assets measured on a recurring basis, gross	$	—		$	9,352		$	78		$	9,430
	Cash collateral paid(5)										123
	Netting of cash collateral received(8)													$	(1,791	)
	Non-trading derivatives and other financial assets measured on a recurring basis	$	—		$	9,352		$	78		$	9,553		$	(1,791	)	$	7,762
	Total assets	$	261,637		$	1,322,433		$	42,393		$	1,633,109		$	(873,723	)	$	759,386
	Total as a percentage of gross assets(6)	16.1		%	81.3		%	2.6		%
	Liabilities
	Interest-bearing deposits	$	—		$	1,198		$	486		$	1,684		$	—		$	1,684
	Federal funds purchased and securities loaned or sold under agreements to repurchase	—			82,811			1,043			83,854			(47,129		)	36,725
	Trading account liabilities
	Securities sold, not yet purchased	59,463			11,057			424			70,944			—			70,944
	Trading derivatives
	Interest rate contracts	77			617,933			4,272			622,282
	Foreign exchange contracts	—			158,354			472			158,826
	Equity contracts	2,955			26,616			2,898			32,469
Commodity contracts	669			22,872			2,645			26,186
Credit derivatives	—			39,787			3,643			43,430
Total trading derivatives	$	3,701		$	865,562		$	13,930		$	883,193
Cash collateral received(7)										$	9,846
Netting agreements													$	(777,178	)
Netting of cash collateral paid													(47,769		)
Total trading derivatives	$	3,701		$	865,562		$	13,930		$	893,039		$	(824,947	)	$	68,092
Short-term borrowings	$	—		$	1,152		$	344		$	1,496		$	—		$	1,496
Long-term debt	—			18,890			7,290			26,180			—			26,180
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross	$	—		$	1,777		$	7		$	1,784
Cash collateral received(8)										7
Netting of cash collateral paid(5)													$	(15	)
Total non-trading derivatives and other financial liabilities measured on a recurring basis	$	—		$	1,777		$	7		$	1,791		$	(15	)	$	1,776
Total liabilities	$	63,164		$	982,447		$	23,524		$	1,078,988		$	(872,091	)	$	206,897
Total as a percentage of gross liabilities(6)	5.9		%	91.9		%	2.2		%
-1	For the year ended December 31, 2014, the Company transferred assets of approximately $4.1 billion from Level 1 to Level 2, primarily related to foreign government securities not traded in active markets and Citi refining its methodology for certain equity contracts to reflect the prevalence of off-exchange trading. During the year ended December 31, 2014, the Company transferred assets of approximately $4.2 billion from Level 2 to Level 1, primarily related to foreign government bonds traded with sufficient frequency to constitute a liquid market. During the year ended December 31, 2014, the Company transferred liabilities of approximately $1.4 billion from Level 1 to Level 2, as Citi refined its methodology for certain equity contracts to reflect the prevalence of off-exchange trading. During the year ended December 31, 2014, there were no material transfers of liabilities from Level 2 to Level 1.
-2	Represents netting of: (i) the amounts due under securities purchased under agreements to resell and the amounts owed under securities sold under agreements to repurchase; and (ii) derivative exposures covered by a qualifying master netting agreement and cash collateral offsetting.
-3	Reflects the net amount of $54,292 million of gross cash collateral paid, of which $47,769 million was used to offset derivative liabilities.
-4	There is no allowance for loan losses recorded for loans reported at fair value.
-5	Reflects the net amount of $138 million of gross cash collateral paid, of which $15 million was used to offset non-trading derivative liabilities.
-6	Because the amount of the cash collateral paid/received has not been allocated to the Level 1, 2 and 3 subtotals, these percentages are calculated based on total assets and liabilities measured at fair value on a recurring basis, excluding the cash collateral paid/received on derivatives.
-7	Reflects the net amount of $57,471 million of gross cash collateral received, of which $47,625 million was used to offset derivative assets.
-8	Reflects the net amount of $1,798 million of gross cash collateral received, of which $1,791 million was used to offset non-trading derivative assets.
Fair Value Levels
In millions of dollars at December 31, 2013	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
										inventory						balance
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	—		$	172,848		$	3,566		$	176,414		$	(32,331	)	$	144,083
Trading non-derivative assets
Trading mortgage-backed securities
U.S. government-sponsored agency guaranteed	—			22,861			1,094			23,955			—			23,955
Residential	—			1,223			2,854			4,077			—			4,077
Commercial	—			2,318			256			2,574			—			2,574
Total trading mortgage-backed securities	$	—		$	26,402		$	4,204		$	30,606		$	—		$	30,606
U.S. Treasury and federal agency securities	$	12,080		$	2,757		$	—		$	14,837		$	—		$	14,837
State and municipal	—			2,985			222			3,207			—			3,207
Foreign government	49,220			25,220			416			74,856			—			74,856
Corporate	—			28,699			1,835			30,534			—			30,534
Equity securities	58,761			1,958			1,057			61,776			—			61,776
Asset-backed securities	—			1,274			4,342			5,616			—			5,616
Other trading assets	—			8,491			3,184			11,675			—			11,675
Total trading non-derivative assets	$	120,061		$	97,786		$	15,260		$	233,107		$	—		$	233,107
Trading derivatives
Interest rate contracts	$	11		$	624,902		$	3,467		$	628,380
Foreign exchange contracts	40			91,189			1,325			92,554
Equity contracts	5,793			17,611			1,473			24,877
Commodity contracts	506			7,775			801			9,082
Credit derivatives	—			37,336			3,010			40,346
Total trading derivatives	$	6,350		$	778,813		$	10,076		$	795,239
Cash collateral paid(3)										$	6,073
Netting agreements													$	(713,598	)
Netting of cash collateral received(6)													(34,893		)
Total trading derivatives	$	6,350		$	778,813		$	10,076		$	801,312		$	(748,491	)	$	52,821
Investments
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	—		$	41,810		$	187		$	41,997		$	—		$	41,997
Residential	—			10,103			102			10,205			—			10,205
Commercial	—			453			—			453			—			453
Total investment mortgage-backed securities	$	—		$	52,366		$	289		$	52,655		$	—		$	52,655
U.S. Treasury and federal agency securities	$	69,139		$	18,449		$	8		$	87,596		$	—		$	87,596
State and municipal	$	—		$	17,297		$	1,643		$	18,940		$	—		$	18,940
Foreign government	35,179			60,948			344			96,471			—			96,471
Corporate	4			10,841			285			11,130			—			11,130
Equity securities	2,583			336			815			3,734			—			3,734
Asset-backed securities	—			13,314			1,960			15,274			—			15,274
Other debt securities	—			661			50			711			—			711
Non-marketable equity securities	—			358			4,347			4,705			—			4,705
Total investments	$	106,905		$	174,570		$	9,741		$	291,216		$	—		$	291,216
In millions of dollars at December 31, 2013	Level 1(1)			Level 2(1)			Level 3			Gross			Netting(2)			Net
										inventory						balance
Loans(4)	$	—		$	886		$	4,143		$	5,029		$	—		$	5,029
Mortgage servicing rights	—			—			2,718			2,718			—			2,718
Non-trading derivatives and other financial assets measured on a recurring basis, gross	$	—		$	9,811		$	181		$	9,992
Cash collateral paid										82
Netting of cash collateral received(7)													$	(2,951	)
Non-trading derivatives and other financial assets measured on a recurring basis	$	—		$	9,811		$	181		$	10,074		$	(2,951	)	$	7,123
Total assets	$	233,316		$	1,234,714		$	45,685		$	1,519,870		$	(783,773	)	$	736,097
Total as a percentage of gross assets(5)	15.4		%	81.6		%	3		%
Liabilities
Interest-bearing deposits	$	—		$	787		$	890		$	1,677		$	—		$	1,677
Federal funds purchased and securities loaned or sold under agreements to repurchase	—			85,576			902			86,478			(32,331		)	54,147
Trading account liabilities
Securities sold, not yet purchased	51,035			9,883			590			61,508						61,508
Trading account derivatives
Interest rate contracts	12			614,586			2,628			617,226
Foreign exchange contracts	29			87,978			630			88,637
Equity contracts	5,783			26,178			2,331			34,292
Commodity contracts	363			7,613			2,194			10,170
Credit derivatives	—			37,510			3,284			40,794
Total trading derivatives	$	6,187		$	773,865		$	11,067		$	791,119
Cash collateral received(6)										$	8,827
Netting agreements													$	(713,598	)
Netting of cash collateral paid(3)													(39,094		)
Total trading derivatives	$	6,187		$	773,865		$	11,067		$	799,946		$	(752,692	)	$	47,254
Short-term borrowings	$	—		$	3,663		$	29		$	3,692		$	—		$	3,692
Long-term debt	—			19,256			7,621			26,877			—			26,877
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross	$	—		$	1,719		$	10		$	1,729
Cash collateral received(7)										$	282
Non-trading derivatives and other financial liabilities measured on a recurring basis	—			1,719			10			2,011						2,011
Total liabilities	$	57,222		$	894,749		$	21,109		$	982,189		$	(785,023	)	$	197,166
Total as a percentage of gross liabilities(5)	5.9		%	92		%	2.2		%
-1	For the year ended December 31, 2013, the Company transferred assets of approximately $2.5 billion from Level 1 to Level 2, primarily related to foreign government securities, which were not traded with sufficient frequency to constitute an active market. During the year ended December 31, 2013, the Company transferred assets of approximately $49.3 billion from Level 2 to Level 1, substantially all related to U.S. Treasury securities held across the Company’s major investment portfolios where Citi obtained additional information from its external pricing sources to meet the criteria for Level 1 classification. There were no material liability transfers between Level 1 and Level 2 during the year ended December 31, 2013.
-2	Represents netting of: (i) the amounts due under securities purchased under agreements to resell and the amounts owed under securities sold under agreements to repurchase; and (ii) derivative exposures covered by a qualifying master netting agreement and cash collateral offsetting.
-3	Reflects the net amount of $45,167 million of gross cash collateral paid, of which $39,094 million was used to offset derivative liabilities.
-4	There is no allowance for loan losses recorded for loans reported at fair value.
-5	Because the amount of the cash collateral paid/received has not been allocated to the Level 1, 2 and 3 subtotals, these percentages are calculated based on total assets and liabilities measured at fair value on a recurring basis, excluding the cash collateral paid/received on derivatives.
-6	Reflects the net amount of $43,720 million of gross cash collateral received, of which $34,893 million was used to offset derivative assets.
-7	Reflects the net amount of $3,233 million of gross cash collateral received, of which $2,951 million was used to offset derivative assets.
Changes in level 3 fair value category	Level 3 Fair Value Rollforward
					Net realized/unrealized						Transfers																				Unrealized
					gains (losses) incl. in																										gains
																															(losses)
	In millions of dollars	Dec. 31, 2013			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2014			still held(3)
					transactions						Level 3			Level 3
	Assets
	Federal funds sold and securities borrowed or purchased under agreements to resell	$	3,566		$	(61	)	$	—		$	84		$	(8	)	$	75		$	—	$	—		$	(258	)	$	3,398		$	133
	Trading non-derivative assets
	Trading mortgage-backed securities
	U.S. government-sponsored agency guaranteed	1,094			117			—			854			(966		)	714			26		(695		)	(59		)	1,085			8
	Residential	2,854			457			—			442			(514		)	2,582			—		(3,141		)	—			2,680			132
	Commercial	256			17			—			187			(376		)	758			—		(402		)	—			440			(4		)
	Total trading mortgage-backed securities	$	4,204		$	591		$	—		$	1,483		$	(1,856	)	$	4,054		$	26	$	(4,238	)	$	(59	)	$	4,205		$	136
	U.S. Treasury and federal agency securities	$	—		$	3		$	—		$	—		$	—		$	7		$	—	$	(10	)	$	—		$	—		$	—
	State and municipal	222			10			—			150			(105		)	34			—		(70		)	—			241			1
	Foreign government	416			(56		)	—			130			(253		)	676			—		(707		)	—			206			5
	Corporate	1,835			(127		)	—			465			(502		)	1,988			—		(2,839		)	—			820			(139		)
	Equity securities	1,057			87			—			142			(209		)	1,437			—		(295		)	—			2,219			337
	Asset-backed securities	4,342			876			—			158			(332		)	3,893			—		(5,643		)	—			3,294			3
	Other trading assets	3,184			269			—			2,637			(2,278		)	5,427			—		(4,490		)	(377		)	4,372			31
	Total trading non-derivative assets	$	15,260		$	1,653		$	—		$	5,165		$	(5,535	)	$	17,478		$	26	$	(18,292	)	$	(398	)	$	15,357		$	374
	Trading derivatives, net(4)
	Interest rate contracts	$	839		$	(818	)	$	—		$	24		$	(98	)	$	113		$	—	$	(162	)	$	(109	)	$	(211	)	$	(414	)
	Foreign exchange contracts	695			92			—			47			(39		)	59			—		(59		)	(17		)	778			56
	Equity contracts	(858		)	482			—			(916		)	766			435			—		(279		)	(493		)	(863		)	(274		)
	Commodity contracts	(1,393		)	(338		)	—			92			(12		)	—			—		—			29			(1,622		)	(174		)
	Credit derivatives	(274		)	(567		)	—			4			(156		)	103			—		(3		)	150			(743		)	(369		)
	Total trading derivatives, net(4)	$	(991	)	$	(1,149	)	$	—		$	(749	)	$	461		$	710		$	—	$	(503	)	$	(440	)	$	(2,661	)	$	(1,175	)
					Net realized/unrealized						Transfers																				Unrealized
					gains (losses) incl. in																										gains
																															(losses)
	In millions of dollars	Dec. 31, 2013			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2014			still held(3)
					transactions						Level 3			Level 3
	Investments
	Mortgage-backed securities
	U.S. government-sponsored agency guaranteed	$	187		$	—		$	52		$	60		$	(203	)	$	17		$	—	$	(73	)	$	(2	)	$	38		$	(8	)
	Residential	102			—			33			31			(2		)	17			—		(173		)	—			8			—
	Commercial	—			—			(6		)	4			(7		)	10			—		—			—			1			—
	Total investment mortgage-backed securities	$	289		$	—		$	79		$	95		$	(212	)	$	44		$	—	$	(246	)	$	(2	)	$	47		$	(8	)
	U.S. Treasury and federal agency securities	$	8		$	—		$	—		$	—		$	—		$	—		$	—	$	(2	)	$	—		$	6		$	—
	State and municipal	1,643			—			(64		)	811			(584		)	923			—		(549		)	—			2,180			49
	Foreign government	344			—			(27		)	286			(105		)	851			—		(490		)	(181		)	678			(17		)
	Corporate	285			—			(6		)	26			(143		)	728			—		(218		)	—			672			(4		)
	Equity securities	815			—			111			19			(19		)	10			—		(255		)	—			681			(78		)
	Asset-backed securities	1,960			—			41			—			(47		)	95			—		(195		)	(1,305		)	549			(18		)
	Other debt securities	50			—			(1		)	—			—			116			—		(115		)	(50		)	—			—
	Non-marketable equity securities	4,347			—			94			67			—			707			—		(787		)	(1,903		)	2,525			81
	Total investments	$	9,741		$	—		$	227		$	1,304		$	(1,110	)	$	3,371		$	—	$	(2,857	)	$	(3,338	)	$	7,338		$	5
	Loans	$	4,143		$	—		$	(233	)	$	92		$	6		$	951		$	197	$	(895	)	$	(1,153	)	$	3,108		$	37
	Mortgage servicing rights	2,718			—			(390		)	—			—			—			217		(317		)	(383		)	1,845			(390		)
	Other financial assets measured on a recurring basis	181			—			100			(83		)	—			3			164		(10		)	(277		)	78			14
	Liabilities
	Interest-bearing deposits	$	890		$	—		$	357		$	5		$	(12	)	$	—		$	127	$	—		$	(167	)	$	486		$	(69	)
	Federal funds purchased and securities loaned or sold under agreements to repurchase	902			(6		)	—			54			—			78			—		220			(217		)	1,043			(34		)
	Trading account liabilities
	Securities sold, not yet purchased	590			(81		)	—			79			(111		)	—			—		534			(749		)	424			(58		)
	Short-term borrowings	29			(31		)	—			323			(12		)	—			49		—			(76		)	344			(8		)
	Long-term debt	7,621			109			49			2,701			(4,206		)	—			3,893		—			(2,561		)	7,290			(446		)
	Other financial liabilities measured on a recurring basis	10			—			(5		)	5			(3		)	—			1		(3		)	(8		)	7			(4		)
	-1	Changes in fair value for available-for-sale investments are recorded in Accumulated other comprehensive income (loss), unless other-than-temporarily impaired, while gains and losses from sales are recorded in Realized gains (losses) from sales of investments on the Consolidated Statement of Income.
	-2	Unrealized gains (losses) on MSRs are recorded in Other revenue on the Consolidated Statement of Income.
	-3	Represents the amount of total gains or losses for the period, included in earnings (and Accumulated other comprehensive income (loss) for changes in fair value of available-for-sale investments), attributable to the change in fair value relating to assets and liabilities classified as Level 3 that are still held at December 31, 2014.
	-4	Total Level 3 derivative assets and liabilities have been netted in these tables for presentation purposes only.
				Net realized/unrealized						Transfers																				Unrealized
				gains (losses) incl. in																										gains
																														(losses)
In millions of dollars	Dec. 31, 2012			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2013			still held(3)
				transactions						Level 3			Level 3
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	5,043		$	(137	)	$	—		$	627		$	(1,871	)	$	59		$	—	$	71		$	(226	)	$	3,566		$	(124	)
Trading non-derivative assets
Trading mortgage-backed securities
U.S. government-sponsored agency guaranteed	1,325			141			—			1,386			(1,477		)	1,316			68		(1,310		)	(355		)	1,094			52
Residential	1,805			474			—			513			(372		)	3,630			—		(3,189		)	(7		)	2,854			10
Commercial	1,119			114			—			278			(304		)	244			—		(1,178		)	(17		)	256			14
Total trading mortgage-backed securities	$	4,249		$	729		$	—		$	2,177		$	(2,153	)	$	5,190		$	68	$	(5,677	)	$	(379	)	$	4,204		$	76
U.S. Treasury and federal agency securities	$	—		$	(1	)	$	—		$	54		$	—		$	—		$	—	$	(53	)	$	—		$	—		$	—
State and municipal	195			37			—			9			—			107			—		(126		)	—			222			15
Foreign government	311			(21		)	—			156			(67		)	326			—		(289		)	—			416			5
Corporate	2,030			(20		)	—			410			(410		)	2,864			—		(2,116		)	(923		)	1,835			(406		)
Equity securities	264			129			—			228			(210		)	829			—		(183		)	—			1,057			59
Asset-backed securities	4,453			544			—			181			(193		)	5,165			—		(5,579		)	(229		)	4,342			123
Other trading assets	2,321			202			—			960			(1,592		)	3,879			—		(2,253		)	(333		)	3,184			(7		)
Total trading non-derivative assets	$	13,823		$	1,599		$	—		$	4,175		$	(4,625	)	$	18,360		$	68	$	(16,276	)	$	(1,864	)	$	15,260		$	(135	)
Trading derivatives, net(4)
Interest rate contracts	$	181		$	292		$	—		$	692		$	(226	)	$	228		$	—	$	(155	)	$	(173	)	$	839		$	779
Foreign exchange contracts	—			625			—			29			(35		)	26			—		(10		)	60			695			146
Equity contracts	(1,448		)	96			—			25			295			298			—		(149		)	25			(858		)	(453		)
Commodity contracts	(771		)	(164		)	—			—			(527		)	15			—		(25		)	79			(1,393		)	(246		)
Credit derivatives	(342		)	(368		)	—			106			(183		)	20			—		—			493			(274		)	(544		)
Total trading derivatives, net(4)	$	(2,380	)	$	481		$	—		$	852		$	(676	)	$	587		$	—	$	(339	)	$	484		$	(991	)	$	(318	)
Investments
Mortgage-backed securities
U.S. government-sponsored agency guaranteed	$	1,458		$	—		$	(7	)	$	2,058		$	(3,820	)	$	593		$	—	$	(38	)	$	(57	)	$	187		$	11
Residential	205			—			30			60			(265		)	212			—		(140		)	—			102			7
Commercial	—			—			—			4			(21		)	17			—		—			—			—			—
Total investment mortgage-backed securities	$	1,663		$	—		$	23		$	2,122		$	(4,106	)	$	822		$	—	$	(178	)	$	(57	)	$	289		$	18
U.S. Treasury and federal agency securities	$	12		$	—		$	—		$	—		$	—		$	—		$	—	$	(4	)	$	—		$	8		$	—
State and municipal	849			—			10			12			(122		)	1,236			—		(217		)	(125		)	1,643			(75		)
Foreign government	383			—			2			178			(256		)	506			—		(391		)	(78		)	344			(28		)
Corporate	385			—			(27		)	334			(119		)	104			—		(303		)	(89		)	285			—
Equity securities	773			—			56			19			(1		)	1			—		(33		)	—			815			47
Asset-backed securities	2,220			—			117			1,192			(1,684		)	1,475			—		(337		)	(1,023		)	1,960			—
Other debt securities	258			—			—			—			(205		)	50			—		(53		)	—			50			—
Non-marketable equity securities	5,364			—			249			—			—			653			—		(342		)	(1,577		)	4,347			241
Total investments	$	11,907		$	—		$	430		$	3,857		$	(6,493	)	$	4,847		$	—	$	(1,858	)	$	(2,949	)	$	9,741		$	203
				Net realized/unrealized						Transfers																				Unrealized
				gains (losses) incl. in																										gains
																														(losses)
In millions of dollars	Dec. 31, 2012			Principal			Other(1)(2)			into			out of			Purchases			Issuances		Sales			Settlements			Dec. 31, 2013			still held(3)
				transactions						Level 3			Level 3
Loans	$	4,931		$	—		$	(24	)	$	353		$	—		$	179		$	652	$	(192	)	$	(1,756	)	$	4,143		$	(122	)
Mortgage servicing rights	1,942			—			555			—			—			—			634		(2		)	(411		)	2,718			553
Other financial assets measured on a recurring basis	2,452			—			63			1			—			216			474		(2,046		)	(979		)	181			(5		)
Liabilities
Interest-bearing deposits	$	786		$	—		$	(125	)	$	32		$	(21	)	$	—		$	86	$	—		$	(118	)	$	890		$	(41	)
Federal funds purchased and securities loaned or sold under agreements to repurchase	841			91			—			216			(17		)	36			—		40			(123		)	902			50
Trading account liabilities
Securities sold, not yet purchased	365			42			—			89			(52		)	—			—		612			(382		)	590			73
Short-term borrowings	112			53			—			2			(10		)	—			316		—			(338		)	29			(5		)
Long-term debt	6,726			292			153			3,738			(2,531		)	—			1,466		(1		)	(1,332		)	7,621			758
Other financial liabilities measured on a recurring basis	24			—			(215		)	5			(2		)	(5		)	104		—			(331		)	10			(9		)
-1	Changes in fair value for available-for-sale investments are recorded in Accumulated other comprehensive income (loss), unless other-than-temporarily impaired, while gains and losses from sales are recorded in Realized gains (losses) from sales of investments on the Consolidated Statement of Income.
-2	Unrealized gains (losses) on MSRs are recorded in Other revenue on the Consolidated Statement of Income.
-3	Represents the amount of total gains or losses for the period, included in earnings (and Accumulated other comprehensive income (loss) for changes in fair value of available-for-sale investments), attributable to the change in fair value relating to assets and liabilities classified as Level 3 that are still held at December 31, 2013.
-4	Total Level 3 derivative assets and liabilities have been netted in these tables for presentation purposes only.
Significant valuation techniques and most significant unobservable inputs used in Level 3 fair value measurements	Valuation Techniques and Inputs for Level 3 Fair Value Measurements
	As of December 31, 2014	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
		(in millions)											Average(4)
	Assets
	Federal funds sold and securities borrowed or purchased under agreements to resell	$	3,156		Model-based	Interest rate	1.27		%	1.97		%	1.8		%
	Mortgage-backed securities	$	2,874		Price-based	Price	$	—		$	127.87		$	81.43
		1,117			Yield analysis	Yield	0.01		%	19.91		%	5.89		%
	State and municipal, foreign government, corporate and other debt securities	$	5,937		Price-based	Price	$	—		$	124		$	90.62
		1,860			Cash flow	Credit spread	25 bps			600 bps			233 bps
	Equity securities(5)	$	2,163		Price-based	Price (5)	$	—		$	141		$	91
		679			Cash flow	Yield	4		%	5		%	4.5		%
						WAL	0.01 years			3.14 years			1.07 years
	Asset-backed securities	$	3,607		Price-based	Price	$	—		$	105.5		$	67.01
	Non-marketable equity	$	1,224		Price-based	Discount to price	—		%	90		%	4.04		%
		1,055			Comparables analysis	EBITDA multiples	2.9		x	13.1		x	9.77		x
						PE ratio	8.1		x	13.1		x	8.43		x
						Price-to-book ratio	0.99		x	1.56		x	1.15		x
						Fund NAV(5)	$	1		$	64,668,171		$	29,975,777
	Derivatives—Gross(6)
	Interest rate contracts (gross)	$	8,309		Model-based	Interest rate (IR) lognormal volatility	18.05		%	90.65		%	30.21		%
						Mean reversion	1		%	20		%	10.5		%
	Foreign exchange contracts (gross)	$	1,428		Model-based	Foreign exchange (FX) volatility	0.37		%	58.4		%	8.57		%
		294			Cash flow	Interest rate	3.72		%	8.27		%	5.02		%
						IR-FX correlation	40		%	60		%	50		%
	Equity contracts (gross)(7)	$	4,431		Model-based	Equity volatility	9.56		%	82.44		%	24.61		%
		502			Price-based	Equity forward	84.1		%	100.8		%	94.1		%
						Equity-FX correlation	(88.20		)%	48.7		%	(25.17		)%
						Equity-equity correlation	(66.30		)%	94.8		%	36.87		%
						Price	$	0.01		$	144.5		$	93.05
	Commodity contracts (gross)	$	3,606		Model-based	Commodity volatility	5		%	83		%	24		%
						Commodity correlation	(57.00		)%	91		%	30		%
						Forward price	35.34		%	268.77		%	101.74		%
	As of December 31, 2014	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
		(in millions)											Average(4)
	Credit derivatives (gross)	$	4,944		Model-based	Recovery rate	13.97		%	75		%	37.62		%
		1,584			Price-based	Credit correlation	—		%	95		%	58.76		%
						Price	$	1		$	144.5		$	53.86
						Credit spread	1 bps			3,380 bps			180 bps
						Upfront points	0.39			100			52.26
	Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)(6)	$	74		Model-based	Redemption rate	13		%	99.5		%	68.73		%
		11			Price-based	Forward Price	107		%	107.1		%	107.05		%
						Fund NAV	$	12,974		$	10,087,963		$	9,308,012
	Loans	$	1,095		Cash flow	Yield	1.6		%	4.5		%	2.23		%
		832			Model-based	Price	$	4.72		$	106.55		$	98.56
		740			Price-based	Credit spread	35 bps			500 bps			199 bps
		441			Yield analysis
	Mortgage servicing rights	$	1,750		Cash flow	Yield	5.19		%	21.4		%	10.25		%
						WAL	3.31 years			7.89 years			5.17 years
	Liabilities
	Interest-bearing deposits	$	486		Model-based	Equity-IR correlation	34		%	37		%	35.43		%
						Commodity correlation	(57.00		)%	91		%	30		%
						Commodity volatility	5		%	83		%	24		%
						Forward price	35.34		%	268.77		%	101.74		%
	Federal funds purchased and securities loaned or sold under agreements to repurchase	$	1,043		Model-based	Interest rate	0.74		%	2.26		%	1.9		%
	Trading account liabilities
	Securities sold, not yet purchased	$	251		Model-based	Credit-IR correlation	(70.49		)%	8.81		%	47.17		%
		$	142		Price-based	Price	$	—		$	117		$	70.33
	Short-term borrowings and long-term debt	$	7,204		Model-based	IR lognormal volatility	18.05		%	90.65		%	30.21		%
						Mean reversion	1		%	20		%	10.5		%
						Equity volatility	10.18		%	69.65		%	23.72		%
						Credit correlation	87.5		%	87.5		%	87.5		%
						Equity forward	89.5		%	100.8		%	95.8		%
						Forward price	35.34		%	268.77		%	101.8		%
						Commodity correlation	(57.00		)%	91		%	30		%
					Commodity volatility	5		%	83		%	24		%
As of December 31, 2013	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
	(in millions)											Average(4)
Assets
Federal funds sold and securities borrowed or purchased under agreements to resell	$	3,299		Model-based	Interest rate	1.33		%	2.19		%	2.04		%
Mortgage-backed securities	$	2,869		Price-based	Price	$	0.1		$	117.78		77.6
	1,241			Yield analysis	Yield	0.03		%	21.8		%	8.66		%
State and municipal, foreign government, corporate and other debt securities	$	5,361		Price-based	Price	$	—		$	126.49		$	87.47
	2,014			Cash flow	Credit spread	11 bps			375 bps			213 bps
Equity securities(5)	$	947		Price-based	Price (5)	$	0.31		$	93.66		$	86.9
	827			Cash flow	Yield	4		%	5		%	4.5		%
					WAL	0.01 years			3.55 years			1.38 years
Asset-backed securities	$	4,539		Price-based	Price	$	—		$	135.83		$	70.89
	1,300			Model-based	Credit spread	25 bps			378 bps			302 bps
Non-marketable equity	$	2,324		Price-based	Fund NAV(5)	$	612		$336,559,340			$124,080,454
	1,470			Comparables analysis	EBITDA multiples	4.2		x	16.9		x	9.78		x
	533			Cash flow	Discount to price	—		%	75		%	3.47		%
					Price-to-book ratio	0.9		x	1.05		x	1.02		x
					PE ratio	9.1		x	9.1		x	9.1		x
Derivatives—Gross(6)
Interest rate contracts (gross)	$	5,721		Model-based	Interest rate (IR) lognormal volatility	10.6		%	87.2		%	21.16		%
Foreign exchange contracts (gross)	$	1,727		Model-based	Foreign exchange (FX) volatility	1		%	28		%	13.45		%
	189			Cash flow	Interest rate	0.11		%	13.88		%	6.02		%
					IR-FX correlation	40		%	60		%	50		%
					IR-IR correlation	40		%	68.79		%	40.52		%
					Credit spread	25 bps			419 bps			162 bps
Equity contracts (gross)(7)	$	3,189		Model-based	Equity volatility	10.02		%	73.48		%	29.87		%
	563			Price-based	Equity forward	79.1		%	141		%	100.24		%
					Equity-equity correlation	(81.30		)%	99.4		%	48.45		%
					Equity-FX correlation	(70.00		)%	55		%	0.6		%
					Price	$	—		$	118.75		$	88.1
Commodity contracts (gross)	$	2,988		Model-based	Commodity volatility	4		%	146		%	15		%
					Commodity correlation	(75.00		)%	90		%	32		%
					Forward price	23		%	242		%	105		%
Credit derivatives (gross)	$	4,767		Model-based	Recovery rate	20		%	64		%	38.11		%
	1,520			Price-based	Credit correlation	5		%	95		%	47.43		%
					Price	$	0.02		$	115.2		$	29.83
					Credit spread	3 bps			1,335 bps			203 bps
					Upfront points	2.31			100			57.69
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)(6)	$	82		Price-based	EBITDA multiples	5.2		x	12.6		x	12.08		x
	60			Comparables analysis	PE ratio	6.9		x	6.9		x	6.9		x
	38			Model-based	Price-to-book ratio	1.05		x	1.05		x	1.05		x
					Price	$	—		$	105.1		$	71.25
					Fund NAV	$	1		$	10,688,600		$	9,706,488
					Discount to price	—		%	35		%	16.36		%
As of December 31, 2013	Fair Value(1)			Methodology	Input	Low(2)(3)			High(2)(3)			Weighted
	(in millions)											Average(4)
Loans	$	2,153		Price-based	Price	$	—		$	103.75		$	91.19
	1,422			Model-based	Yield	1.6		%	4.5		%	2.1		%
	549			Yield analysis	Credit spread	49 bps			1,600 bps			302 bps
Mortgage servicing rights	$	2,625		Cash flow	Yield	3.64		%	12		%	7.19		%
					WAL	2.27 years			9.44 years			6.12 years
Liabilities
Interest-bearing deposits	$	890		Model-based	Equity volatility	14.79		%	42.15		%	27.74		%
					Mean reversion	1		%	20		%	10.5		%
					Equity-IR correlation	9		%	20.5		%	19.81		%
					Forward price	23		%	242		%	105		%
					Commodity correlation	(75.00		)%	90		%	32		%
					Commodity volatility	4		%	146		%	15		%
Federal funds purchased and securities loaned or sold under agreements to repurchase	$	902		Model-based	Interest rate	0.47		%	3.66		%	2.71		%
Trading account liabilities
Securities sold, not yet purchased	$	289		Model-based	Credit spread	166 bps			180 bps			175 bps
	$	273		Price-based	Credit-IR correlation	(68.00		)%	5		%	(50.00		)%
					Price	$	—		$	124.25		$	99.75
Short-term borrowings and long-term debt	$	6,781		Model-based	IR lognormal volatility	10.6		%	87.2		%	20.97		%
	868			Price-based	Equity forward	79.1		%	141		%	99.51		%
					Equity volatility	10.7		%	57.2		%	19.41		%
					Equity-FX correlation	(70.00		)%	55		%	0.6		%
					Equity-equity correlation	(81.30		)%	99.4		%	48.3		%
					Interest rate	4		%	10		%	5		%
					Price	$	0.63		$	103.75		$	80.73
					Forward price	23		%	242		%	101		%
-1	The fair value amounts presented in this table represent the primary valuation technique or techniques for each class of assets or liabilities.
-2	Some inputs are shown as zero due to rounding.
-3	When the low and high inputs are the same, there is either a constant input applied to all positions, or the methodology involving the input applies to one large position only.
-4	Weighted averages are calculated based on the fair value of the instrument.
-5	For equity securities, the price and fund NAV inputs are expressed on an absolute basis, not as a percentage of the notional amount.
-6	Both trading and nontrading account derivatives—assets and liabilities—are presented on a gross absolute value basis.
-7	Includes hybrid products.
Items measured at fair value of a nonrecurring basis	The following table presents the carrying amounts of all assets that were still held as of December 31, 2014 and December 31, 2013, for which a nonrecurring fair value measurement was recorded:
	In millions of dollars	Fair value			Level 2			Level 3
	31-Dec-14
	Loans held-for-sale	$	4,152		$	1,084		$	3,068
	Other real estate owned	102			21			81
	Loans(1)	3,367			2,881			486
	Total assets at fair value on a nonrecurring basis	$	7,621		$	3,986		$	3,635
	-1	Represents impaired loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate secured loans.
	In millions of dollars	Fair value			Level 2			Level 3
	31-Dec-13
	Loans held-for-sale	$	3,483		$	2,165		$	1,318
	Other real estate owned	138			15			123
	Loans(1)	4,713			3,947			766
	Total assets at fair value on a nonrecurring basis	$	8,334		$	6,127		$	2,207
	-1	Represents impaired loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate secured loans.
Valuation techniques and inputs for Level 3 nonrecurring fair value measurements	The following tables present the valuation techniques covering the majority of Level 3 nonrecurring fair value measurements and the most significant unobservable inputs used in those measurements as of December 31, 2014 and December 31, 2013:
	As of December 31, 2014	Fair Value(1)			Methodology	Input	Low			High			Weighted
		(in millions)											average(2)
	Loans held-for-sale	$	2,740		Price-based	Price	$	92		$	100		$	99.54
						Credit Spread	5 bps			358 bps			175 bps
	Other real estate owned	$	76		Price-based	Appraised Value	$	11,000		$	11,124,137		$	4,730,129
						Discount to price(4)	13		%	64		%	28.8		%
	Loans(3)	$	437		Price-based	Discount to price(4)	13		%	34		%	28.92		%
	-1	The fair value amounts presented in this table represent the primary valuation technique or techniques for each class of assets or liabilities.
	-2	Weighted averages are calculated based on the fair value of the instrument.
	-3	Represents loans held for investment whose carrying amounts are based on the fair value of the underlying collateral.
	-4	Includes estimated costs to sell.
	As of December 31, 2013	Fair Value(1)			Methodology	Input	Low			High			Weighted
		(in millions)											average(2)
	Loans held-for-sale	$	912		Price-based	Price(3)	$	60		$	100		$	98.77
		393			Cash Flow	Credit Spread	45 bps			80 bps			64 bps
	Other real estate owned	$	98		Price-based	Discount to price(4)	34		%	59		%	39		%
		17			Cash Flow	Price(3)	$	60.46		$	100		$	96.67
						Appraised Value	636,249			15,897,503			11,392,478
	Loans(5)	$	581		Price-based	Discount to price(4)	34		%	39		%	35		%
		109			Model-based	Price(3)	$	52.4		$	68		$	65.32
						Appraised Value	6,500,000			86,000,000			43,532,719
	-1	The fair value amounts presented in this table represent the primary valuation technique or techniques for each class of assets or liabilities.
	-2	Weighted averages are based on the fair value of the instrument.
	-3	Prices are based on appraised values.
	-4	Includes estimated costs to sell.
	-5	Represents loans held for investment whose carrying amounts are based on the fair value of the underlying collateral.
Changes in total nonrecurring fair value measurements	The following table presents total nonrecurring fair value measurements for the period, included in earnings, attributable to the change in fair value relating to assets that are still held at December 31, 2014 and December 31, 2013:
		Year ended December 31,
	In millions of dollars	2014
	Loans held-for-sale	$	34
	Other real estate owned	(16		)
	Loans(1)	(533		)
	Total nonrecurring fair value gains (losses)	$	(515	)
	-1	Represents loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate loans.
	In millions of dollars	Year ended December 31, 2013
	Loans held-for-sale	$	—
	Other real estate owned	(6		)
	Loans(1)	(761		)
	Total nonrecurring fair value gains (losses)	$	(767	)
	-1	Represents loans held for investment whose carrying amount is based on the fair value of the underlying collateral, including primarily real-estate loans.
Estimated Fair Value of Financial Instruments
		31-Dec-14						Estimated fair value
		Carrying			Estimated
	In billions of dollars	value			fair value			Level 1			Level 2			Level 3
	Assets
	Investments	$	30.5		$	32.2		$	4.5		$	25.2		$	2.5
	Federal funds sold and securities borrowed or purchased under agreements to resell	98.4			98.4			—			89.7			8.7
	Loans(1)(2)	620			617.6			—			5.6			612
	Other financial assets(2)(3)	213.8			213.8			8.3			151.9			53.6
	Liabilities
	Deposits	$	897.6		$	894		$	—		$	746.2		$	147.8
	Federal funds purchased and securities loaned or sold under agreements to repurchase	136.7			136.7			—			136.5			0.2
	Long-term debt(4)	196.9			202.5			—			172.7			29.8
	Other financial liabilities(5)	136.2			136.2			—			41.4			94.8
		31-Dec-13						Estimated fair value
		Carrying			Estimated
	In billions of dollars	value			fair value			Level 1			Level 2			Level 3
	Assets
	Investments	$	17.8		$	19.3		$	5.3		$	11.9		$	2.1
	Federal funds sold and securities borrowed or purchased under agreements to resell	115.6			115.6			—			107.2			8.4
	Loans(1)(2)	637.9			635.1			—			5.6			629.5
	Other financial assets(2)(3)	250.7			250.7			9.4			189.5			51.8
	Liabilities
	Deposits	$	966.6		$	965.6		$	—		$	776.4		$	189.2
	Federal funds purchased and securities loaned or sold under agreements to repurchase	152			152			—			151.8			0.2
	Long-term debt(4)	194.2			201.3			—			175.6			25.7
	Other financial liabilities(5)	136.2			136.2			—			41.2			95
	-1	The carrying value of loans is net of the Allowance for loan losses of $16.0 billion for December 31, 2014 and $19.6 billion for December 31, 2013. In addition, the carrying values exclude $0.0 billion and $2.9 billion of lease finance receivables at December 31, 2014 and December 31, 2013, respectively.
	-2	Includes items measured at fair value on a nonrecurring basis.
	-3	Includes cash and due from banks, deposits with banks, brokerage receivables, reinsurance recoverable and other financial instruments included in Other assets on the Consolidated Balance Sheet, for all of which the carrying value is a reasonable estimate of fair value.
	-4	The carrying value includes long-term debt balances under qualifying fair value hedges.
	-5	Includes brokerage payables, separate and variable accounts, short-term borrowings (carried at cost) and other financial instruments included in Other liabilities on the Consolidated Balance Sheet, for all of which the carrying value is a reasonable estimate of fair value.

FAIR_VALUE_ELECTIONS_Tables

FAIR VALUE ELECTIONS (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value, Option, Aggregate Differences [Abstract]
Schedule of financial instruments selected for changes in fair value gains and losses	The following table presents the changes in fair value gains and losses for the years ended December 31, 2014 and 2013 associated with those items for which the fair value option was elected:
		Changes in fair value gains (losses) for the
		Years ended December 31,
	In millions of dollars	2014			2013
	Assets
	Federal funds sold and securities borrowed or purchased under agreements to resell	$	812		$	(628	)
	Selected portfolios of securities purchased under agreements to resell and securities borrowed
	Trading account assets	190			(190		)
	Investments	30			(48		)
	Loans
	Certain corporate loans(1)	(135		)	72
	Certain consumer loans(1)	(41		)	(155		)
	Total loans	$	(176	)	$	(83	)
	Other assets
	MSRs	$	(344	)	$	553
	Certain mortgage loans held for sale(2)	474			951
	Total other assets	$	130		$	1,504
	Total assets	$	986		$	555
	Liabilities
	Interest-bearing deposits	$	(77	)	$	141
	Federal funds purchased and securities loaned or sold under agreements to repurchase	(5		)	110
	Selected portfolios of securities sold under agreements to repurchase and securities loaned
	Trading account liabilities	29			3
	Short-term borrowings	8			73
	Long-term debt	(307		)	(186		)
	Total liabilities	$	(352	)	$	141
	-1	Includes mortgage loans held by mortgage loan securitization VIEs consolidated upon the adoption of ASC 810 Consolidation (SFAS 167) on January 1, 2010.
	-2	Includes gains (losses) associated with interest rate lock-commitments for those loans that have been originated and elected under the fair value option.
Schedule of fair value of loans and other disclosures for certain credit related products	The following table provides information about certain credit products carried at fair value at December 31, 2014 and 2013:
		31-Dec-14						31-Dec-13
	In millions of dollars	Trading assets			Loans			Trading assets		Loans
	Carrying amount reported on the Consolidated Balance Sheet	$	10,290		$	5,901		$	9,262	$	4,105
	Aggregate unpaid principal balance in excess of (less than) fair value	(26		)	125			4		(79		)
	Balance of non-accrual loans or loans more than 90 days past due	13			3			97		5
	Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	28			1			41		5
Schedule of fair value of loans and other disclosures for certain mortgage loans	The following table provides information about certain mortgage loans HFS carried at fair value at December 31, 2014 and 2013:
	In millions of dollars	December 31,			31-Dec-13
		2014
	Carrying amount reported on the Consolidated Balance Sheet	$	1,447		$	2,089
	Aggregate fair value in excess of unpaid principal balance	67			48
	Balance of non-accrual loans or loans more than 90 days past due	—			—
	Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	—			—
Corporate and consumer loans of consolidated VIEs carried at fair value	The following table provides information about corporate and consumer loans of consolidated VIEs carried at fair value at December 31, 2014 and 2013:
		December 31, 2014						December 31, 2013
	In millions of dollars	Corporate loans			Consumer loans			Corporate loans		Consumer loans
	Carrying amount reported on the Consolidated Balance Sheet	$	—		$	—		$	14	$	910
	Aggregate unpaid principal balance in excess of fair value	9			—			7		212
	Balance of non-accrual loans or loans more than 90 days past due	—			—			—		81
	Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	—			—			—		106
Schedule of carrying value of structured notes, disaggregated by type of embedded derivative instrument	The following table provides information about the carrying value of structured notes, disaggregated by type of embedded derivative instrument at December 31, 2014 and 2013:
	In billions of dollars	December 31, 2014			December 31, 2013
	Interest rate linked	$	10.9		$	9.8
	Foreign exchange linked	0.3			0.5
	Equity linked	8			7
	Commodity linked	1.4			1.8
	Credit linked	2.5			3.5
	Total	$	23.1		$	22.6
Schedule of long-term debt carried at fair value, excluding debt issued by consolidated VIEs	The following table provides information about long-term debt carried at fair value, excluding debt issued by consolidated VIEs, at December 31, 2014 and 2013:
	In millions of dollars	December 31, 2014			December 31, 2013
	Carrying amount reported on the Consolidated Balance Sheet	$	26,180		$	25,968
	Aggregate unpaid principal balance in excess of (less than) fair value	(151		)	(866		)
Schedule of short-term borrowings carried at fair value	The following table provides information about short-term borrowings carried at fair value at December 31, 2014 and 2013:
	In millions of dollars	December 31, 2014			December 31, 2013
	Carrying amount reported on the Consolidated Balance Sheet	$	1,496		$	3,692
	Aggregate unpaid principal balance in excess of (less than) fair value	31			(38		)

PLEDGED_ASSETS_COLLATERAL_GUAR1

PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS (Tables)	12 Months Ended
	Dec. 31, 2014
Pledged Assets, Collateral, Guarantees and Commitments [Abstract]
Schedule of carrying value of assets pledged	At December 31, 2014 and 2013, the approximate carrying values of the significant components of pledged assets recognized on the Company’s Consolidated Balance Sheet included:
	In millions of dollars	2014		2013
	Investment securities	$	173,015	$	183,071
	Loans	214,530		228,513
	Trading account assets	111,832		118,832
	Total	$	499,377	$	530,416
Schedule of future minimum rental payments for operating leases	Future minimum annual rentals under noncancelable leases, net of sublease income, are as follows:
	In millions of dollars
	2015	$	1,415
	2016	1,192
	2017	964
	2018	771
	2019	679
	Thereafter	4,994
	Total	$	10,015
Schedule of guarantor obligations	The following tables present information about Citi’s guarantees at December 31, 2014 and December 31, 2013:
		Maximum potential amount of future payments
	In billions of dollars at December 31, 2014 except carrying value in millions	Expire within		Expire after		Total amount		Carrying value
		1 year		1 year		outstanding		(in millions of dollars)
	Financial standby letters of credit	$	25.4	$	73	$	98.4	$	242
	Performance guarantees	7.1		4.8		11.9		29
	Derivative instruments considered to be guarantees	12.5		79.2		91.7		2,806
	Loans sold with recourse	—		0.2		0.2		15
	Securities lending indemnifications(1)	127.5		—		127.5		—
	Credit card merchant processing(1)	86		—		86		—
	Custody indemnifications and other	—		48.9		48.9		54
	Total	$	258.5	$	206.1	$	464.6	$	3,146
		Maximum potential amount of future payments
	In billions of dollars at December 31, 2013 except carrying value in millions	Expire within		Expire after		Total amount		Carrying value
		1 year		1 year		outstanding		(in millions of dollars)
	Financial standby letters of credit	$	28.8	$	71.4	$	100.2	$	429
	Performance guarantees	7.6		4.9		12.5		42
	Derivative instruments considered to be guarantees	6		61.6		67.6		797
	Loans sold with recourse	—		0.3		0.3		22
	Securities lending indemnifications(1)	79.2		—		79.2		—
	Credit card merchant processing(1)	85.9		—		85.9		—
	Custody indemnifications and other	—		36.3		36.3		53
	Total	$	207.5	$	174.5	$	382	$	1,343
	-1	The carrying values of securities lending indemnifications and credit card merchant processing were not material for either period presented, as the probability of potential liabilities arising from these guarantees is minimal.
Schedule of guarantor obligations by credit ratings	Presented in the tables below are the maximum potential amounts of future payments that are classified based upon internal and external credit ratings as of December 31, 2014 and December 31, 2013. As previously mentioned, the determination of the maximum potential future payments is based on the notional amount of the guarantees without consideration of possible recoveries under recourse provisions or from collateral held or pledged. As such, Citi believes such amounts bear no relationship to the anticipated losses, if any, on these guarantees.
		Maximum potential amount of future payments
	In billions of dollars at December 31, 2014	Investment		Non-investment		Not		Total
		grade		grade		rated
	Financial standby letters of credit	$	73	$	15.9	$	9.5	$	98.4
	Performance guarantees	7.3		3.9		0.7		11.9
	Derivative instruments deemed to be guarantees	—		—		91.7		91.7
	Loans sold with recourse	—		—		0.2		0.2
	Securities lending indemnifications	—		—		127.5		127.5
	Credit card merchant processing	—		—		86		86
	Custody indemnifications and other	48.8		0.1		—		48.9
	Total	$	129.1	$	19.9	$	315.6	$	464.6
		Maximum potential amount of future payments
	In billions of dollars at December 31, 2013	Investment		Non-investment		Not		Total
		grade		grade		rated
	Financial standby letters of credit	$	76.2	$	14.8	$	9.2	$	100.2
	Performance guarantees	7.4		3.6		1.5		12.5
	Derivative instruments deemed to be guarantees	—		—		67.6		67.6
	Loans sold with recourse	—		—		0.3		0.3
	Securities lending indemnifications	—		—		79.2		79.2
	Credit card merchant processing	—		—		85.9		85.9
	Custody indemnifications and other	36.2		0.1		—		36.3
	Total	$	119.8	$	18.5	$	243.7	$	382
Schedule of Credit Commitments	The table below summarizes Citigroup’s credit commitments as of December 31, 2014 and December 31, 2013:
	In millions of dollars	U.S.		Outside of		December 31,		December 31,
				U.S.		2014		2013
	Commercial and similar letters of credit	$	1,369	$	5,265	$	6,634	$	7,341
	One- to four-family residential mortgages	3,243		2,431		5,674		4,946
	Revolving open-end loans secured by one- to four-family residential properties	13,535		2,563		16,098		16,781
	Commercial real estate, construction and land development	8,045		1,197		9,242		8,003
	Credit card lines	492,391		119,658		612,049		641,111
	Commercial and other consumer loan commitments	154,923		88,757		243,680		225,447
	Other commitments and contingencies	1,584		4,091		5,675		7,863
	Total	$	675,090	$	223,962	$	899,052	$	911,492

SELECTED_QUARATERLY_FINANCIAL_1

SELECTED QUARATERLY FINANCIAL DATA (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information
		2014											2013
	In millions of dollars, except per share amounts	Fourth			Third			Second			First		Fourth		Third		Second		First
	Revenues, net of interest expense	$	17,812		$	19,604		$	19,342		$	20,124	$	17,779	$	17,904	$	20,488	$	20,248
	Operating expenses	14,426			12,955			15,521			12,149		12,293		11,679		12,149		12,288
	Provisions for credit losses and for benefits and claims	2,013			1,750			1,730			1,974		2,072		1,959		2,024		2,459
	Income from continuing operations before income taxes	$	1,373		$	4,899		$	2,091		$	6,001	$	3,414	$	4,266	$	6,315	$	5,501
	Income taxes (benefits)	991			1,985			1,838			2,050		1,090		1,080		2,127		1,570
	Income from continuing operations	$	382		$	2,914		$	253		$	3,951	$	2,324	$	3,186	$	4,188	$	3,931
	Income (loss) from discontinued operations, net of taxes	(1		)	(16		)	(22		)	37		181		92		30		(33		)
	Net income before attribution of noncontrolling interests	$	381		$	2,898		$	231		$	3,988	$	2,505	$	3,278	$	4,218	$	3,898
	Noncontrolling interests	31			59			50			45		50		51		36		90
	Citigroup’s net income	$	350		$	2,839		$	181		$	3,943	$	2,455	$	3,227	$	4,182	$	3,808
	Earnings per share (1)
	Basic
	Income from continuing operations	$	0.06		$	0.89		$	0.03		$	1.22	$	0.71	$	0.98	$	1.34	$	1.24
	Net income	0.06			0.88			0.03			1.24		0.77		1.01		1.35		1.23
	Diluted
	Income from continuing operations	0.06			0.88			0.03			1.22		0.71		0.98		1.33		1.24
	Net income	0.06			0.88			0.03			1.23		0.77		1		1.34		1.23
	Common stock price per share
	High	$	56.37		$	53.66		$	49.58		$	55.2	$	53.29	$	53	$	53.27	$	47.6
	Low	49.68			46.9			45.68			46.34		47.67		47.67		42.5		41.15
	Close	54.11			51.82			47.1			47.6		52.11		48.51		47.97		44.24
	Dividends per share of common stock	0.01			0.01			0.01			0.01		0.01		0.01		0.01		0.01
	This Note to the Consolidated Financial Statements is unaudited due to the Company’s individual quarterly results not being subject to an audit.
	(1)   Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.

SUMMARY_OF_SIGNIFICANT_ACCOUNT2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)	12 Months Ended
	Dec. 31, 2014
	payment
Accounting Policies [Abstract]
Ownership percentage, if less than this amount then income from investments is recognized when dividends are received	20.00%
Minimum
Loans charge off and interest accrual period
Minimum number of payments on a modified loan to return to accrual status	1
Number of months in sustained period of repayment performance for cash-basis loans to return to an accrual status	6 months
Maximum
Loans charge off and interest accrual period
Minimum number of payments on a modified loan to return to accrual status	6
Consumer | Minimum
Loans charge off and interest accrual period
Minimum number of payments required for modification of loans	1
Consumer | Maximum
Loans charge off and interest accrual period
Minimum number of payments required for modification of loans	3
Installment and real estate loans
Loans charge off and interest accrual period
Past due period for consumer loans when interest accrual ceases	90 days
Credit cards and unsecured revolving loans
Loans charge off and interest accrual period
Past due period for consumer loans when interest accrual ceases	180 days
Period for consumer loans charged-off	180 days
Unsecured installment loans
Loans charge off and interest accrual period
Period for consumer loans charged-off	120 days
Loans secured with non-real estate collateral
Loans charge off and interest accrual period
Past due period for secured consumer loans after which they are written down to net collateral value	120 days
Mortgage and real estate
Loans charge off and interest accrual period
Past due period for secured consumer loans after which they are written down to net collateral value	180 days
Real estate-secured loans
Loans charge off and interest accrual period
Past due period of contractual payments to charge-off, if no payments in six months and if a decision has been made not to foreclose on the loans	180 days
Non-bank loans secured by real estate
Loans charge off and interest accrual period
Number of months in sustained period of repayment performance for cash-basis loans to return to an accrual status	6 months
Past due period of contractual payments to charge-off, if no payments in six months and if a decision has been made not to foreclose on the loans	180 days
Maximum past due period of contractual payments, if a decision has been made not to foreclose on the loans	360 days
Past due period of contractual payments after which the foreclosure process should be started	120 days
Past due period of contractual payments to charge-off if no payments in six months	180 days
Maximum past due period of contractual payments	360 days
Non-bank unsecured personal loans
Loans charge off and interest accrual period
Number of months in sustained period of repayment performance for cash-basis loans to return to an accrual status	6 months
Past due period of contractual payments to charge-off if no payments in six months	180 days
Maximum past due period of contractual payments	360 days
Unsecured loans in bankruptcy
Loans charge off and interest accrual period
Maximum period from receiving bankruptcy court filing notification to charge-off	60 days
Real estate-secured loans in bankruptcy
Loans charge off and interest accrual period
Maximum past due period of contractual payments	60 days
Maximum past due period of contractual payments to write down secured loans to net collateral values	60 days
Non-bank loans secured by real estate in bankruptcy
Loans charge off and interest accrual period
Maximum period from receiving bankruptcy court filing notification to write down secured loans	60 days
Non-bank unsecured personal loans in bankruptcy
Loans charge off and interest accrual period
Period for consumer loans charged-off	30 days
Open-ended consumer loans
Loans charge off and interest accrual period
Minimum number of payments required for modification of loans	3
Number of re-age modification limitations in twelve months	1
Number of re-age modification limitations in five years	2
Commercial market loans
Loans charge off and interest accrual period
Period for past due interest or principal payment of commercial market loans to be considered doubtful after which loans are placed on a cash (non-accrual) basis	90 days
Corporate
Loans charge off and interest accrual period
Period for past due interest or principal payment of corporate loans to be considered doubtful	90 days
Time period for reversing accrued interest on impaired corporate loans	90 days
Home equity loans | New OCC guidance
Loans charge off and interest accrual period
Number of days past due, non-accrual status	90 days

SUMMARY_OF_SIGNIFICANT_ACCOUNT3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounting Changes (Details) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Sep. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Mar. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle
Incremental charge-offs due to implementation of new guidance	$11,108,000,000	$12,769,000,000	$17,005,000,000
Release of loan loss reserve due to implementation of new guidance	-1,879,000,000	-1,961,000,000	-1,908,000,000
Increase (decrease) in deferred asset cost as a result of adoption of new accounting standards for deferred asset acquisition costs	64,000,000	54,000,000	-85,000,000
Deferred tax asset recorded as a result of adoption of new accounting standards for deferred asset acquisition costs	2,334,000,000	2,734,000,000					2,334,000,000
Addition (reduction) in Retained earnings	118,201,000,000	111,168,000,000					118,201,000,000
Other assets	122,471,000,000	125,266,000,000					122,471,000,000
Addition (reduction) in deferred tax assets	52,983,000,000	55,781,000,000					52,983,000,000
OCC Chapter 7 Bankruptcy Guidance
New Accounting Pronouncements or Change in Accounting Principle
Incremental charge-offs due to implementation of new guidance				-40,000,000	635,000,000
Release of loan loss reserve due to implementation of new guidance					-600,000,000
Net reduction in pretax income due to implementation of new guidance					-35,000,000
Increase in TDRs resulted from implementation of new guidance					1,700,000,000
Increase in non-accrual loans resulted from implementation of new guidance					1,500,000,000
Increase in current non-accrual loans resulted from implementation of new guidance					1,300,000,000
Accounting Standards Update 2011-04
New Accounting Pronouncements or Change in Accounting Principle
Reserves released as a result of implementing the prohibition on valuation adjustments						125,000,000
Accounting Standards Update 2010-26
New Accounting Pronouncements or Change in Accounting Principle
Increase (decrease) in deferred asset cost as a result of adoption of new accounting standards for deferred asset acquisition costs						-165,000,000
Deferred tax asset recorded as a result of adoption of new accounting standards for deferred asset acquisition costs						58,000,000
Change in opening retained earning as a result of adoption of new accounting standards for deferred asset acquisition costs						107,000,000
Accounting Standards Update 2014-01 | Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle
Addition (reduction) in Retained earnings								-349,000,000
Other assets								-178,000,000
Addition (reduction) in deferred tax assets								-171,000,000
Accounting Standards Update 2014-14
New Accounting Pronouncements or Change in Accounting Principle
Reclassification adjustment							$130,000,000

DISCONTINUED_OPERATIONS_AND_SI2

DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS - Discontinued Operations (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	1 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 20, 2013	Feb. 28, 2013
Results of Discontinued Operations
Total revenues, net of interest expense									$74,000,000	$1,086,000,000	$1,106,000,000
Income (loss) from discontinued operations									10,000,000	-242,000,000	-109,000,000
Gain on sale									0	268,000,000	-1,000,000
Provision (benefit) for income taxes									12,000,000	-244,000,000	-52,000,000
Income (loss) from discontinued operations, net of taxes	-1,000,000	-16,000,000	-22,000,000	37,000,000	181,000,000	92,000,000	30,000,000	-33,000,000	-2,000,000	270,000,000	-58,000,000
Discontinued operations
Cash flows from operating activities									0	154,000,000	-209,000,000
Cash flows from investing activities									0	-207,000,000	199,000,000
Cash flows from financing activities									0	43,000,000	16,000,000
Net cash provided by (used in) discontinued operations									0	-10,000,000	6,000,000
Brazil Creditcard
Discontinued operations
Amount to be received on sale of discontinued operation												1,240,000,000
After tax gain on sale of discontinued operations												325,000,000
Results of Discontinued Operations
Total revenues, net of interest expense									69,000,000	1,012,000,000	1,045,000,000
Income (loss) from discontinued operations									63,000,000	-48,000,000	110,000,000
Gain on sale									0	206,000,000	0	206,000,000
Provision (benefit) for income taxes									11,000,000	-138,000,000	19,000,000
Income (loss) from discontinued operations, net of taxes									52,000,000	296,000,000	91,000,000
Discontinued operations
Cash flows from operating activities									0	197,000,000	-205,000,000
Cash flows from investing activities									0	-207,000,000	195,000,000
Cash flows from financing activities									0	0	16,000,000
Net cash provided by (used in) discontinued operations									0	-10,000,000	6,000,000
Citi Capital Advisors Business
Results of Discontinued Operations
Total revenues, net of interest expense									0	74,000,000	60,000,000
Income (loss) from discontinued operations									-7,000,000	-158,000,000	-123,000,000
Gain on sale									0	62,000,000	0
Provision (benefit) for income taxes									-3,000,000	-30,000,000	-44,000,000
Income (loss) from discontinued operations, net of taxes									-4,000,000	-66,000,000	-79,000,000
Discontinued operations
Cash flows from operating activities									0	-43,000,000	-4,000,000
Cash flows from investing activities									0	0	4,000,000
Cash flows from financing activities									0	43,000,000	0
Net cash provided by (used in) discontinued operations									0	0	0
Number of transactions										2
Number of management companies resulting from the sale of business										2
Ownership interest (as a percent)													24.90%
Egg Banking PLC
Results of Discontinued Operations
Total revenues, net of interest expense									5,000,000	0	1,000,000
Income (loss) from discontinued operations									-46,000,000	-62,000,000	-96,000,000
Gain on sale									0	0	-1,000,000
Provision (benefit) for income taxes									-16,000,000	-22,000,000	-34,000,000
Income (loss) from discontinued operations, net of taxes									-30,000,000	-40,000,000	-63,000,000
German retail banking operations
Results of Discontinued Operations
Income (loss) from discontinued operations						27,000,000
Provision (benefit) for income taxes						-57,000,000
Income (loss) from discontinued operations, net of taxes						85,000,000
Discontinued operations
Residual costs associated with banking operations tax effect									$20,000,000

DISCONTINUED_OPERATIONS_AND_SI3

DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS - Significant Disposals (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 22, 2014	Sep. 30, 2014
Liabilities
Income before taxes	$10,000,000	($242,000,000)	($109,000,000)
Pre-tax gain on sale	0	268,000,000	-1,000,000
Japan Retail Business
Assets
Cash and deposits with banks	151,000,000
Loans, net	544,000,000
Allowance	2,000,000
Goodwill	51,000,000
Other assets, advances to/from subs	19,854,000,000
Other assets	66,000,000
Total assets	20,666,000,000
Liabilities
Deposits	20,605,000,000
Other liabilities	61,000,000
Total liabilities	20,666,000,000
Income before taxes	-5,000,000	31,000,000	-4,000,000
Spain Consumer Business
Assets
Loans, net				1,700,000,000
Liabilities
Deposits				2,200,000,000
Assets under management				3,400,000,000
Income before taxes	373,000,000	59,000,000	6,000,000
Number of branches				45
Number of ATMs				48
Number of employees				938
Pre-tax gain on sale				243,000,000
After tax gain on sale of discontinued operations				131,000,000
Greece Consumer Business
Assets
Loans, net					353,000,000
Liabilities
Deposits					1,200,000,000
Assets under management					1,100,000,000
Income before taxes	133,000,000	-113,000,000	-258,000,000
Number of branches					20
Number of ATMs					85
Number of employees					719
Pre-tax gain on sale					209,000,000
After tax gain on sale of discontinued operations					$91,000,000

BUSINESS_SEGMENTS_Details

BUSINESS SEGMENTS (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment reporting information
Revenues, net of interest expense	$17,812	$19,604	$19,342	$20,124	$17,779	$17,904	$20,488	$20,248	$76,882	[1]	$76,419	[1]	$69,190
Provision for income taxes	991	1,985	1,838	2,050	1,090	1,080	2,127	1,570	6,864		5,867		7
Income (loss) from continuing operations	382	2,914	253	3,951	2,324	3,186	4,188	3,931	7,500		13,630		7,818
Identifiable assets	1,842,530				1,880,382				1,842,530		1,880,382
Provisions for credit losses and for benefits and claims	2,013	1,750	1,730	1,974	2,072	1,959	2,024	2,459	7,467		8,514		11,329
Citicorp | North America
Segment reporting information
Revenues, net of interest expense									32,000		31,200		29,900
Citicorp | EMEA
Segment reporting information
Revenues, net of interest expense									10,900		11,500		11,500
Citicorp | Latin America
Segment reporting information
Revenues, net of interest expense									13,400		14,000		13,500
Citicorp | Asia
Segment reporting information
Revenues, net of interest expense									14,700		15,000		15,000
Global Consumer Banking
Segment reporting information
Regional business	4								4
Provisions for credit losses and for benefits and claims									6,100		6,800		6,200
Institutional Clients Group
Segment reporting information
Number of countries where the entity provides a broad range of banking and financial products and services	100								100
Provisions for credit losses and for benefits and claims									57		78		276
Citi Holdings
Segment reporting information
Provisions for credit losses and for benefits and claims									1,300		1,600		4,900
Operating Segments | Total Citicorp and Corporate/Other
Segment reporting information
Revenues, net of interest expense									71,067		71,853		69,995
Provision for income taxes									6,743		6,999		4,396
Income (loss) from continuing operations									10,866		15,547		14,383
Identifiable assets	1,745,000				1,763,000				1,745,000		1,763,000
Operating Segments | Global Consumer Banking
Segment reporting information
Revenues, net of interest expense									37,753		38,165		39,105
Provision for income taxes									3,473		3,424		3,468
Income (loss) from continuing operations									6,938		6,763		7,597
Identifiable assets	396,000				405,000				396,000		405,000
Operating Segments | Institutional Clients Group
Segment reporting information
Revenues, net of interest expense									33,267		33,567		30,762
Provision for income taxes									3,729		3,857		2,021
Income (loss) from continuing operations									9,521		9,414		7,834
Identifiable assets	1,020,000				1,045,000				1,020,000		1,045,000
Operating Segments | Corporate/Other
Segment reporting information
Revenues, net of interest expense									47		121		128
Provision for income taxes									-459		-282		-1,093
Income (loss) from continuing operations									-5,593		-630		-1,048
Identifiable assets	329,000				313,000				329,000		313,000
Operating Segments | Citi Holdings
Segment reporting information
Revenues, net of interest expense									5,815		4,566		-805
Provision for income taxes									121		-1,132		-4,389
Income (loss) from continuing operations									-3,366		-1,917		-6,565
Identifiable assets	$98,000				$117,000				$98,000		$117,000
[1]	Certain prior-period revenue and expense lines and totals were reclassified to conform to the current period’s presentation. See Note 3 to the Consolidated Financial Statements.

INTEREST_REVENUE_AND_EXPENSE_D

INTEREST REVENUE AND EXPENSE (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Interest revenue
Loan interest, including fees	$44,776		$45,580		$47,712
Deposits with banks	959		1,026		1,261
Federal funds sold and securities borrowed or purchased under agreements to resell	2,366		2,566		3,418
Investments, including dividends	7,195		6,919		7,525
Trading account assets	5,880		6,277		6,802
Other interest	507		602		580
Total interest revenue	61,683	[1]	62,970	[1]	67,298	[1]
Interest expense
Deposits	5,692		6,236		7,690
Federal funds purchased and securities loaned or sold under agreements to repurchase	1,895		2,339		2,817
Trading account liabilities	168		169		190
Short-term borrowings	580		597		727
Long-term debt	5,355		6,836		9,188
Total interest expense	13,690	[1]	16,177	[1]	20,612	[1]
Net interest revenue	47,993	[1]	46,793	[1]	46,686	[1]
Provision for loan losses	6,828		7,604		10,458
Net interest revenue after provision for loan losses	41,165		39,189		36,228
Insurance fees and charges	$1,038		$1,132		$1,262
[1]	Certain prior-period revenue and expense lines and totals were reclassified to conform to the current period’s presentation. See Note 3 to the Consolidated Financial Statements.

COMMISSIONS_AND_FEES_Details

COMMISSIONS AND FEES (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commissions and fees
Card fees amortization period	12 months
Total commissions and fees	$13,032	$12,941	$12,584
Investment banking
Commissions and fees
Total commissions and fees	3,687	3,315	2,991
Trading-related
Commissions and fees
Total commissions and fees	2,503	2,563	2,331
Credit cards and bank cards
Commissions and fees
Total commissions and fees	2,227	2,472	2,775
Trade and securities services
Commissions and fees
Total commissions and fees	1,871	1,847	1,733
Other Consumer
Commissions and fees
Total commissions and fees	885	911	908
Checking-related
Commissions and fees
Total commissions and fees	531	551	615
Corporate finance
Commissions and fees
Total commissions and fees	531	516	516
Loan servicing
Commissions and fees
Total commissions and fees	380	500	313
Other
Commissions and fees
Total commissions and fees	$417	$266	$402

PRINCIPAL_TRANSACTIONS_Details

PRINCIPAL TRANSACTIONS (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Principal transactions revenue
Principal transactions revenue	$6,698	$7,302	$4,980
Interest rate contracts
Principal transactions revenue
Principal transactions revenue	3,657	4,055	2,380
Foreign exchange contracts
Principal transactions revenue
Principal transactions revenue	2,008	2,307	2,493
Equity contracts
Principal transactions revenue
Principal transactions revenue	-260	319	158
Commodity and other contracts
Principal transactions revenue
Principal transactions revenue	590	277	108
Credit derivatives
Principal transactions revenue
Principal transactions revenue	703	344	-159
Citicorp
Principal transactions revenue
Principal transactions revenue	6,312	7,277	4,949
Global Consumer Banking
Principal transactions revenue
Principal transactions revenue	787	863	808
Institutional Clients Group
Principal transactions revenue
Principal transactions revenue	5,908	6,494	4,330
Corporate/Other
Principal transactions revenue
Principal transactions revenue	-383	-80	-189
Citi Holdings
Principal transactions revenue
Principal transactions revenue	$386	$25	$31

INCENTIVE_PLANS_Annual_Incenti

INCENTIVE PLANS - Annual Incentive Awards and Compensation Allowances (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Annual Incentive Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of types of deferred awards generally delivered	2
Annual Incentive Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold value for awards paid entirely as immediate cash bonus (less than $100,000)	100,000
Annual Incentive Awards | Capital Accumulation Program Awards (CAP) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for CAP and deferred cash awards	3 years
Annual Incentive Awards | Capital Accumulation Program Awards (CAP) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for CAP and deferred cash awards	4 years
Annual Incentive Awards | Capital Accumulation Program Awards (CAP) | Granted February 2013 and later | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of reduction applicable in case of pretax loss	20.00%
Annual Incentive Awards | Deferred cash awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for CAP and deferred cash awards	3 years
Annual Incentive Awards | Deferred cash awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for CAP and deferred cash awards	4 years
Annual Incentive Awards | Highly compensated employees | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of incentive pay required to be deferred	25.00%
Annual Incentive Awards | Highly compensated employees | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of incentive pay required to be deferred	60.00%
Annual Incentive Awards | Identified staff in the European Union (EU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of immediate incentive delivered in the form of a stock payment	50.00%
Period of sale or transfer restriction on stock payment	6 months
Annual Incentive Awards | Identified staff in the European Union (EU) | Deferred cash awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holdback period on vested awards	6 months
Compensation Allowances | Identified staff in the European Union (EU) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for CAP and deferred cash awards	1 year
Compensation Allowances | Identified staff in the European Union (EU) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for CAP and deferred cash awards	2 years
Deferral requirements percentage	100.00%	100.00%

INCENTIVE_PLANS_Unvested_Stock

INCENTIVE PLANS - Unvested Stock Awards (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014
Unvested stock awards (in shares):
1-Jan-14	61,136,782
New awards	17,729,497
Cancelled awards	-2,194,893
Vested awards	-26,666,993
31-Dec-14	50,004,393
Weighted- average grant date fair value per share (in dollars per share):
1-Jan-14	$39.71
New awards	$49.65
Cancelled awards	$41.31
Vested awards	$40.94
31-Dec-14	$42.52
Weighted-average market value (in dollars per share)	$52.02
Unrecognized compensation cost of unvested stock awards	$659
Weighted-average period of recognition of unrecognized compensation cost of unvested stock awards	8 months 12 days

INCENTIVE_PLANS_Performance_Sh

INCENTIVE PLANS - Performance Share Units (Details) (Performance Share Units)	12 Months Ended
	Dec. 31, 2014
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Period used for calculation of performance goals	3 years
Number of shares of common stock equivalent to each target share	1
Minimum
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Percentage of target shares earned	0.00%
Maximum
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Percentage of target shares earned	150.00%

INCENTIVE_PLANS_Stock_Option_A

INCENTIVE PLANS - Stock Option Activity (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 14, 2011
Options (in shares):
Outstanding, beginning of period	31,508,106	35,020,397	37,596,029
Forfeited or exchanged	-28,257	-50,914	-858,906
Expired	-602,093	-86,964	-1,716,726
Exercised	-4,363,637	-3,374,413	0
Outstanding, end of period	26,514,119	31,508,106	35,020,397
Exercisable, end of period	26,514,119	30,662,588	32,973,444
Weighted- average exercise price (in dollars per share):
Outstanding, beginning of period	$48	$50.72	$51.20
Forfeited or exchanged	$40.80	$212.35	$83.84
Expired	$242.43	$528.40	$438.14
Exercised	$40.82	$40.81	$0
Outstanding, end of period	$50.72	$51.20	$69.60
Intrinsic value per share (in dollars per share):
Exercised	$11.37	$9.54	$0
Outstanding, end of period	$6.11	$1.39	$0
Stock Option Programs | Executive Officer | Granted February 14, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted				2,900,000
Term of award				6 years
Number of installments				3
Closing price of common stock (in dollars per share)				$49.10
Period of sale or transfer restriction on stock payment				1 year

INCENTIVE_PLANS_Stock_Options_

INCENTIVE PLANS - Stock Options Outstanding (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding (in shares)	26,514,119
Options outstanding, Weighted-average contractual life remaining	1 year 2 months 6 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$48.02
Options exercisable, Number exercisable (in shares)	26,514,119
Options exercisable, Weighted-average exercise price (in dollars per share)	$48.02
Exercise price, low end of the range for a significant portion of outstanding options (in dollars per share)	$40
Exercise price, high end of the range for a significant portion of outstanding options (in dollars per share)	$45
$29.70—$49.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of the range (in dollars per share)	$29.70
Exercise price, high end of the range (in dollars per share)	$49.99
Number outstanding (in shares)	25,617,659
Options outstanding, Weighted-average contractual life remaining	1 year 1 month 6 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$42.87
Options exercisable, Number exercisable (in shares)	25,617,659
Options exercisable, Weighted-average exercise price (in dollars per share)	$42.87
$50.00—$99.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of the range (in dollars per share)	$50
Exercise price, high end of the range (in dollars per share)	$99.99
Number outstanding (in shares)	69,956
Options outstanding, Weighted-average contractual life remaining	6 years 1 month 6 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$56.76
Options exercisable, Number exercisable (in shares)	69,956
Options exercisable, Weighted-average exercise price (in dollars per share)	$56.76
$100.00—$199.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of the range (in dollars per share)	$100
Exercise price, high end of the range (in dollars per share)	$199.99
Number outstanding (in shares)	502,416
Options outstanding, Weighted-average contractual life remaining	4 years 0 months 0 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$147.13
Options exercisable, Number exercisable (in shares)	502,416
Options exercisable, Weighted-average exercise price (in dollars per share)	$147.13
$200.00—$299.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of the range (in dollars per share)	$200
Exercise price, high end of the range (in dollars per share)	$299.99
Number outstanding (in shares)	124,088
Options outstanding, Weighted-average contractual life remaining	3 years 1 month 6 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$240.28
Options exercisable, Number exercisable (in shares)	124,088
Options exercisable, Weighted-average exercise price (in dollars per share)	$240.28
$300.00—$399.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, low end of the range (in dollars per share)	$300
Exercise price, high end of the range (in dollars per share)	$399.99
Number outstanding (in shares)	200,000
Options outstanding, Weighted-average contractual life remaining	3 years 1 month 6 days
Options outstanding, Weighted-average exercise price (in dollars per share)	$335.50
Options exercisable, Number exercisable (in shares)	200,000
Options exercisable, Weighted-average exercise price (in dollars per share)	$335.50

INCENTIVE_PLANS_Profit_Sharing

INCENTIVE PLANS - Profit Sharing Plan (Details) (2010 Key Employee Profit Sharing Plan (KEPSP), Identified staff in the European Union (EU))	12 Months Ended
	Dec. 31, 2014
2010 Key Employee Profit Sharing Plan (KEPSP) | Identified staff in the European Union (EU)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Percentage of holdback payment required to be paid in common stock	50.00%
Period of sale or transfer restriction on stock payment	6 months

INCENTIVE_PLANS_Incentive_Comp

INCENTIVE PLANS - Incentive Compensation Cost (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Number of shares available for grant	51.6
Incentive compensation cost	$2,360	$2,871	$2,728
Immediately Vested Stock Award
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Incentive compensation cost	51	54	60
Stock Option Programs
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Incentive compensation cost	1	10	99
Retirement Eligible Employees | Restricted and Deferred Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Incentive compensation cost	525	468	444
Nonretirement Eligible Employees | Restricted and Deferred Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Incentive compensation cost	668	862	864
Deferred Cash Awards and Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Incentive compensation cost	311	323	345
Variable Incentive Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Incentive compensation cost	803	1,076	670
2010 Key Employee Profit Sharing Plan (KEPSP)
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Incentive compensation cost	$1	$78	$246

INCENTIVE_PLANS_Future_Expense

INCENTIVE PLANS - Future Expenses (Details) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Stock Awards	$659
Deferred Cash Awards	409
Future expense related to awards already granted	1,068
Future expense related to awards granted in 2015	1,042
Total	2,110
Institutional Clients Group
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total	1,800
2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Stock Awards	357
Deferred Cash Awards	232
Future expense related to awards already granted	589
Future expense related to awards granted in 2015	400
Total	989
2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Stock Awards	204
Deferred Cash Awards	123
Future expense related to awards already granted	327
Future expense related to awards granted in 2015	290
Total	617
2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Stock Awards	92
Deferred Cash Awards	51
Future expense related to awards already granted	143
Future expense related to awards granted in 2015	188
Total	331
2018 and beyond
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Stock Awards	6
Deferred Cash Awards	3
Future expense related to awards already granted	9
Future expense related to awards granted in 2015	164
Total	$173

RETIREMENT_BENEFITS_Net_Benefi

RETIREMENT BENEFITS - Net (Benefit) Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure
Percentage of the significant plans over global pension and postretirement liabilities, which utilize quarterly measurement policy	80.00%
U.S. Pension Plans
Amortization of unrecognized
Total net (benefit) expense	($184)	($173)	($183)
U.S. Pension Plans | Effect of change in the measurement policy from annually to quarterly
Amortization of unrecognized
Total net (benefit) expense	0	-23	0
U.S. Qualified Pension Plan
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Benefits earned during the year	6	8	12
Interest cost on benefit obligation	541	538	565
Expected return on plan assets	-878	-863	-897
Amortization of unrecognized
Prior service (benefit) cost	-3	-4	-1
Net actuarial loss	105	104	96
Curtailment loss	0	21	0
Settlement (gain) loss	0	0	0
Special termination benefits	0	0	0
U.S. Qualified Pension Plan | Before adjustment due to change in accounting policy
Amortization of unrecognized
Total net (benefit) expense	-229	-196	-225
U.S. Nonqualified Pension Plan | Before adjustment due to change in accounting policy
Amortization of unrecognized
Total net (benefit) expense	45	46	42
Non - U.S. Pension Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Benefits earned during the year	178	210	199
Interest cost on benefit obligation	376	384	367
Expected return on plan assets	-384	-396	-399
Amortization of unrecognized
Prior service (benefit) cost	1	4	4
Net actuarial loss	77	95	77
Curtailment loss	14	4	10
Settlement (gain) loss	53	13	35
Special termination benefits	9	8	1
Total net (benefit) expense	324	322	294
Non - U.S. Pension Plans | Before adjustment due to change in accounting policy
Amortization of unrecognized
Total net (benefit) expense	324	322	294
Non - U.S. Pension Plans | Effect of change in the measurement policy from annually to quarterly
Amortization of unrecognized
Total net (benefit) expense	0	0	0
U.S. Postretirement Benefit Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Benefits earned during the year	0	0	0
Interest cost on benefit obligation	33	33	44
Expected return on plan assets	-1	-2	-4
Amortization of unrecognized
Prior service (benefit) cost	0	-1	-1
Net actuarial loss	0	0	4
Curtailment loss	0	0	0
Settlement (gain) loss	0	0	0
Special termination benefits	0	0	0
Total net (benefit) expense	32	30	43
U.S. Postretirement Benefit Plans | Before adjustment due to change in accounting policy
Amortization of unrecognized
Total net (benefit) expense	32	30	43
U.S. Postretirement Benefit Plans | Effect of change in the measurement policy from annually to quarterly
Amortization of unrecognized
Total net (benefit) expense	0	0	0
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Benefits earned during the year	15	43	29
Interest cost on benefit obligation	120	146	116
Expected return on plan assets	-121	-133	-108
Amortization of unrecognized
Prior service (benefit) cost	-12	0	0
Net actuarial loss	39	45	25
Curtailment loss	0	0	0
Settlement (gain) loss	0	-1	0
Special termination benefits	0	0	0
Total net (benefit) expense	41	103	62
Non-U.S. Postretirement Benefit Plans | Before adjustment due to change in accounting policy
Amortization of unrecognized
Total net (benefit) expense	41	100	62
Non-U.S. Postretirement Benefit Plans | Effect of change in the measurement policy from annually to quarterly
Amortization of unrecognized
Total net (benefit) expense	$0	$3	$0

RETIREMENT_BENEFITS_Funded_Sta

RETIREMENT BENEFITS - Funded Status and Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. Pension Plans
Change in projected benefit obligation
Projected benefit obligation at beginning of year	$12,829
Projected benefit obligation at year end	14,839	12,829
Change in plan assets
Plan assets at fair value at beginning of year	12,731
Company contributions	158	51
Plan assets at fair value year end	13,071	12,731
Funded status of the plans	-1,768	-99
Net amount recognized
Net amount recognized on the balance sheet	-1,768	-99
Amounts recognized in Accumulated other comprehensive income (loss)
Net amount recognized in equity-pretax	-6,141	-4,130
Accumulated benefit obligation at period end	14,821	12,790
U.S. Qualified Pension Plan
Change in projected benefit obligation
Projected benefit obligation at beginning of year	12,137	13,268
Benefits earned during the year	6	8	12
Interest cost on benefit obligation	541	538	565
Plan amendments	0	0
Actuarial (gain) loss	2,077	-671
Benefits paid, net of participants’ contributions	-701	-661
Expected government subsidy	0	0
Divestitures	0	0
Settlements	0	0
Curtailment (gain) loss	0	23
Special/contractual termination benefits	0	0
Foreign exchange impact and other	0	0
Projected benefit obligation at year end	14,060	12,137	13,268
Change in plan assets
Plan assets at fair value at beginning of year	12,731	12,656
Actual return on plan assets	941	789
Company contributions	100	0
Plan participants’ contributions	0	0
Divestitures	0	0
Settlements	0	0
Benefits paid	-701	-661
Foreign exchange impact and other	0	0
Plan assets at fair value year end	13,071	12,731	12,656
Funded status of the plans	-989	593
Net amount recognized
Benefit asset	0	593
Benefit liability	-989	0
Net amount recognized on the balance sheet	-989	593
Amounts recognized in Accumulated other comprehensive income (loss)
Net transition asset (obligation)	0	0
Prior service benefit (cost)	3	7
Net actuarial gain (loss)	-5,819	-3,911
Net amount recognized in equity-pretax	-5,816	-3,904
Accumulated benefit obligation at period end	14,050	12,122
U.S. Nonqualified Pension Plan
Change in projected benefit obligation
Projected benefit obligation at year end	779	692
Change in plan assets
Plan assets at fair value year end	0	0
Funded status of the plans	-779	-692
Net amount recognized
Net amount recognized on the balance sheet	-779	-692
Amounts recognized in Accumulated other comprehensive income (loss)
Net amount recognized in equity-pretax	-325	-226
Accumulated benefit obligation at period end	771	668
Non - U.S. Pension Plans
Change in projected benefit obligation
Projected benefit obligation at beginning of year	7,194	7,399
Benefits earned during the year	178	210	199
Interest cost on benefit obligation	376	384	367
Plan amendments	2	-28
Actuarial (gain) loss	790	-733
Benefits paid, net of participants’ contributions	-352	-296
Expected government subsidy	0	0
Divestitures	-18	0
Settlements	-184	-57
Curtailment (gain) loss	-58	-2
Special/contractual termination benefits	9	8
Foreign exchange impact and other	-685	-76
Projected benefit obligation at year end	7,252	7,194	7,399
Change in plan assets
Plan assets at fair value at beginning of year	6,918	7,154
Actual return on plan assets	1,108	-256
Company contributions	230	357
Plan participants’ contributions	5	6
Divestitures	-11	0
Settlements	-184	-61
Benefits paid	-357	-302
Foreign exchange impact and other	-652	-106
Plan assets at fair value year end	7,057	6,918	7,154
Funded status of the plans	-195	-276
Net amount recognized
Benefit asset	921	709
Benefit liability	-1,116	-985
Net amount recognized on the balance sheet	-195	-276
Amounts recognized in Accumulated other comprehensive income (loss)
Net transition asset (obligation)	-1	-1
Prior service benefit (cost)	13	-2
Net actuarial gain (loss)	-1,690	-2,007
Net amount recognized in equity-pretax	-1,678	-2,010
Accumulated benefit obligation at period end	6,699	6,652
U.S. Postretirement Benefit Plans
Change in projected benefit obligation
Projected benefit obligation at beginning of year	780	1,072
Benefits earned during the year	0	0	0
Interest cost on benefit obligation	33	33	44
Plan amendments	0	0
Actuarial (gain) loss	184	-253
Benefits paid, net of participants’ contributions	-91	-85
Expected government subsidy	11	13
Divestitures	0	0
Settlements	0	0
Curtailment (gain) loss	0	0
Special/contractual termination benefits	0	0
Foreign exchange impact and other	0	0
Projected benefit obligation at year end	917	780	1,072
Change in plan assets
Plan assets at fair value at beginning of year	32	50
Actual return on plan assets	2	-1
Company contributions	56	52
Plan participants’ contributions	51	50
Divestitures	0	0
Settlements	0	0
Benefits paid	-131	-122
Foreign exchange impact and other	0	0
Plan assets at fair value year end	10	32	50
Funded status of the plans	-907	-748
Net amount recognized
Benefit asset	0	0
Benefit liability	-907	-748
Net amount recognized on the balance sheet	-907	-748
Amounts recognized in Accumulated other comprehensive income (loss)
Net transition asset (obligation)	0	0
Prior service benefit (cost)	0	1
Net actuarial gain (loss)	-56	129
Net amount recognized in equity-pretax	-56	130
Accumulated benefit obligation at period end	917	780
Non-U.S. Postretirement Benefit Plans
Change in projected benefit obligation
Projected benefit obligation at beginning of year	1,411	2,002
Benefits earned during the year	15	43	29
Interest cost on benefit obligation	120	146	116
Plan amendments	-14	-171
Actuarial (gain) loss	262	-617
Benefits paid, net of participants’ contributions	-93	-64
Expected government subsidy	0	0
Divestitures	-1	0
Settlements	0	-2
Curtailment (gain) loss	-3	-3
Special/contractual termination benefits	0	0
Foreign exchange impact and other	-170	-4
Projected benefit obligation at year end	1,527	1,411	2,002
Change in plan assets
Plan assets at fair value at beginning of year	1,472	1,497
Actual return on plan assets	166	-223
Company contributions	12	256
Plan participants’ contributions	0	0
Divestitures	0	0
Settlements	0	0
Benefits paid	-93	-64
Foreign exchange impact and other	-173	-15
Plan assets at fair value year end	1,384	1,472	1,497
Funded status of the plans	-143	61
Net amount recognized
Benefit asset	196	407
Benefit liability	-339	-346
Net amount recognized on the balance sheet	-143	61
Amounts recognized in Accumulated other comprehensive income (loss)
Net transition asset (obligation)	0	-1
Prior service benefit (cost)	157	173
Net actuarial gain (loss)	-658	-555
Net amount recognized in equity-pretax	-501	-383
Accumulated benefit obligation at period end	1,527	1,411
Effect of change in the measurement policy from annually to quarterly | U.S. Qualified Pension Plan
Change in projected benefit obligation
Cumulative effect of change in accounting policy	0	-368
Change in plan assets
Cumulative effect of change in accounting policy	0	-53
Effect of change in the measurement policy from annually to quarterly | Non - U.S. Pension Plans
Change in projected benefit obligation
Cumulative effect of change in accounting policy	0	385
Change in plan assets
Cumulative effect of change in accounting policy	0	126
Effect of change in the measurement policy from annually to quarterly | U.S. Postretirement Benefit Plans
Change in projected benefit obligation
Cumulative effect of change in accounting policy	0	0
Change in plan assets
Cumulative effect of change in accounting policy	0	3
Effect of change in the measurement policy from annually to quarterly | Non-U.S. Postretirement Benefit Plans
Change in projected benefit obligation
Cumulative effect of change in accounting policy	0	81
Change in plan assets
Cumulative effect of change in accounting policy	$0	$21

RETIREMENT_BENEFITS_Contributi

RETIREMENT BENEFITS - Contributions (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Pension Plans
Amounts that will be amortized from accumulated other comprehensive income (loss) into net expense in next fiscal year
Future amortization of gain (loss)	($245)
Future amortization of prior service cost (credit)	1
U.S. Pension Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Estimated future cash contributions	0
Estimated benefits paid directly by Company	60
Estimated total company contributions	60
Actual Company contributions
Cash contributions paid by the Company	100	0
Benefits paid directly by the Company	58	51
Total Company contributions	158	51
Non - U.S. Pension Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Estimated future cash contributions	86
Estimated benefits paid directly by Company	47
Estimated total company contributions	133
Actual Company contributions
Cash contributions paid by the Company	130	308
Benefits paid directly by the Company	100	49
Total Company contributions	230	357
Postretirement Benefit Plans
Amounts that will be amortized from accumulated other comprehensive income (loss) into net expense in next fiscal year
Future amortization of gain (loss)	45
Future amortization of prior service cost (credit)	12
U.S. Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Estimated future cash contributions	0
Estimated benefits paid directly by Company	63
Estimated total company contributions	63
Actual Company contributions
Cash contributions paid by the Company	0	0
Benefits paid directly by the Company	56	52
Total Company contributions	56	52
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan, Estimated Future Employer Contributions [Abstract]
Estimated future cash contributions	77
Estimated benefits paid directly by Company	6
Estimated total company contributions	83
Actual Company contributions
Cash contributions paid by the Company	6	251
Benefits paid directly by the Company	6	5
Total Company contributions	$12	$256

RETIREMENT_BENEFITS_Accumulate

RETIREMENT BENEFITS - Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Change in accumulated other comprehensive income (loss)
Change in deferred taxes, net	$660		($698)		$390
Change, net of tax	-1,170	[1]	1,281	[1]	-988	[1]
U.S. Nonqualified Pension Plan
Change in accumulated other comprehensive income (loss)
Actuarial assumptions changes and plan experience	-111		58		-62
Pension Plans and Postretirement Benefit Plans
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax	-3,989		-5,270		-4,282
Cumulative effect of change in accounting policy	0		-22		0
Actuarial assumptions changes and plan experience	-3,404		2,380		-2,400
Net asset gain (loss) due to difference between actual and expected returns	833		-1,084		963
Net amortizations	202		271		214
Prior service credit	13		360		0
Curtailment/settlement loss	67		0		0
Foreign exchange impact and other	459		74		-155
Change in deferred taxes, net	660		-698		390
Change, net of tax	-1,170		1,281		-988
End-of-period balance, net of tax	($5,159)		($3,989)		($5,270)
[1]	Reflects adjustments based on the actuarial valuations of the Company’s significant pension and postretirement plans, including changes in the mortality assumptions at December 31, 2014, and amortization of amounts previously recognized in Accumulated other comprehensive income (loss). See Note 8 to the Consolidated Financial Statements.

RETIREMENT_BENEFITS_PBO_and_AB

RETIREMENT BENEFITS - PBO and ABO Exceeds Fair Value of Plan Assets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
U.S. Pension Plans
PBO exceeds fair value of plan assets
Projected benefit obligation	$14,839,000,000	$692,000,000
Accumulated benefit obligation	14,821,000,000	668,000,000
Fair value of plan assets	13,071,000,000	0
ABO exceeds fair value plan assets
Projected benefit obligation	14,839,000,000	692,000,000
Accumulated benefit obligation	14,821,000,000	668,000,000
Fair value of plan assets	13,071,000,000	0
Non - U.S. Pension Plans
PBO exceeds fair value of plan assets
Projected benefit obligation	2,756,000,000	2,765,000,000
Accumulated benefit obligation	2,353,000,000	2,375,000,000
Fair value of plan assets	1,640,000,000	1,780,000,000
ABO exceeds fair value plan assets
Projected benefit obligation	2,570,000,000	2,408,000,000
Accumulated benefit obligation	2,233,000,000	2,090,000,000
Fair value of plan assets	1,495,000,000	1,468,000,000
U.S. and non-U.S. pension plans, excluding U.S. nonqualified plans
ABO exceeds fair value plan assets
ABO less than fair value of plan assets, accumulated benefit obligation	$600,000,000	$900,000,000

RETIREMENT_BENEFITS_Assumption

RETIREMENT BENEFITS - Assumptions Used (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. Pension Plans
Plan Assumptions - At year end
Discount rate (as a percent)	4.00%				4.75%				4.00%	4.75%
Expected return on assets (as a percent)	7.00%				7.00%				7.00%	7.00%
Plan Assumptions - During the year
Discount rate (as a percent)	4.25%	4.25%	4.55%	4.75%	4.80%	4.75%	4.20%	3.90%
Expected return on assets (as a percent)									7.00%	7.00%
U.S. Qualified Pension Plan | Minimum | Grandfathered employees in frozen plans
Plan Assumptions - At year end
Future compensation increase rate (as a percent)	3.00%								3.00%
U.S. Qualified Pension Plan | Maximum | Grandfathered employees in frozen plans
Plan Assumptions - At year end
Future compensation increase rate (as a percent)	4.00%								4.00%
U.S. Nonqualified Pension Plan
Plan Assumptions - At year end
Discount rate (as a percent)	3.90%				4.75%				3.90%	4.75%
Plan Assumptions - During the year
Discount rate (as a percent)									4.75%	3.90%
Non - U.S. Pension Plans
Plan Assumptions - At year end
Expected return on assets (as a percent)	5.08%				5.68%				5.08%	5.68%
Non - U.S. Pension Plans | Minimum
Plan Assumptions - At year end
Discount rate (as a percent)	1.00%				1.60%				1.00%	1.60%
Future compensation increase rate (as a percent)	1.00%				1.00%				1.00%	1.00%
Expected return on assets (as a percent)	1.30%				1.20%				1.30%	1.20%
Plan Assumptions - During the year
Discount rate (as a percent)									1.60%	1.50%
Future compensation increase rate (as a percent)									1.00%	1.20%
Expected return on assets (as a percent)									1.20%	0.90%
Non - U.S. Pension Plans | Maximum
Plan Assumptions - At year end
Discount rate (as a percent)	32.50%				29.25%				32.50%	29.25%
Future compensation increase rate (as a percent)	30.00%				26.00%				30.00%	26.00%
Expected return on assets (as a percent)	11.50%				11.50%				11.50%	11.50%
Plan Assumptions - During the year
Discount rate (as a percent)									29.25%	28.00%
Future compensation increase rate (as a percent)									26.00%	26.00%
Expected return on assets (as a percent)									11.50%	11.50%
Non - U.S. Pension Plans | Weighted Average
Plan Assumptions - At year end
Discount rate (as a percent)	4.74%				5.60%				4.74%	5.60%
Future compensation increase rate (as a percent)	3.27%				3.40%				3.27%	3.40%
Plan Assumptions - During the year
Discount rate (as a percent)									5.60%	5.24%
Future compensation increase rate (as a percent)									3.40%	3.93%
Expected return on assets (as a percent)									5.68%	5.76%
U.S. Postretirement Benefit Plans
Plan Assumptions - At year end
Discount rate (as a percent)	3.80%				4.35%				3.80%	4.35%
Plan Assumptions - During the year
Discount rate (as a percent)	4.00%	3.95%	4.15%	4.35%	4.30%	4.40%	3.60%	3.60%
Non-U.S. Postretirement Benefit Plans
Plan Assumptions - At year end
Expected return on assets (as a percent)	8.51%				8.50%				8.51%	8.50%
Non-U.S. Postretirement Benefit Plans | Minimum
Plan Assumptions - At year end
Discount rate (as a percent)	2.25%				3.50%				2.25%	3.50%
Expected return on assets (as a percent)	8.50%				8.50%				8.50%	8.50%
Plan Assumptions - During the year
Discount rate (as a percent)									3.50%	3.50%
Expected return on assets (as a percent)									8.50%	8.50%
Non-U.S. Postretirement Benefit Plans | Maximum
Plan Assumptions - At year end
Discount rate (as a percent)	12.00%				11.90%				12.00%	11.90%
Expected return on assets (as a percent)	10.40%				8.90%				10.40%	8.90%
Plan Assumptions - During the year
Discount rate (as a percent)									11.90%	10.00%
Expected return on assets (as a percent)									8.90%	9.60%
Non-U.S. Postretirement Benefit Plans | Weighted Average
Plan Assumptions - At year end
Discount rate (as a percent)	7.50%				8.65%				7.50%	8.65%
Plan Assumptions - During the year
Discount rate (as a percent)									8.65%	7.46%
Expected return on assets (as a percent)									8.50%	8.50%
U.S. pension and postretirement benefit plans
Plan Assumptions - At year end
Expected return on assets (as a percent)	7.00%				7.00%				7.00%	7.00%	7.00%
Plan Assumptions - During the year
Expected return on assets (as a percent)									7.00%	7.00%	7.50%

RETIREMENT_BENEFITS_Expected_R

RETIREMENT BENEFITS - Expected Rate of Return (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. Pension Plans
Defined Benefit Plan Disclosure
Expected return on assets (as a percent)	7.00%	7.00%
Expected return on assets (as a percent)	7.00%	7.00%
Actual return on plan assets	$1,108
U.S. Qualified Pension Plan
Defined Benefit Plan Disclosure
Expected return on plan assets	878	863	897
Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Expected return on assets (as a percent)	5.08%	5.68%
Expected return on plan assets	$384	$396	$399
U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Expected return on assets (as a percent)	7.00%	7.00%	7.00%
Expected return on assets (as a percent)	7.00%	7.00%	7.50%
Actual rate of return (as a percent)	7.80%	6.00%	11.00%

RETIREMENT_BENEFITS_Mortality_

RETIREMENT BENEFITS - Mortality Table (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percent increase to reflect Citigroup mortality experience rate	4.00%
Expected increase in benefit expense, next fiscal year	$73
U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
PBO increase due to mortality rate adjustment	1,209
Increase of PBO due to mortality rate adjustment	1,209
Decrease in funded status and AOCI due to mortality rate adjustment	$737

RETIREMENT_BENEFITS_Sensitivit

RETIREMENT BENEFITS - Sensitivities of Certain Key Assumptions (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of one-percentage-point increase in discount rates	$28	$16	$18
Effect of one-percentage-point decrease in discount rates	-45	-57	-36
Effect of one-percentage-point increase in expected rates of return on pension expense	-129	-123	-120
Effect of one-percentage-point decrease in expected rates of return on pension expense	129	123	120
Non - U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of one-percentage-point increase in discount rates	-39	-52	-48
Effect of one-percentage-point decrease in discount rates	56	79	64
Effect of one-percentage-point increase in expected rates of return on pension expense	-67	-68	-64
Effect of one-percentage-point decrease in expected rates of return on pension expense	67	68	64
U.S. Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of one-percentage-point increase on benefits earned and interest cost for U.S. postretirement plans	2	1
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	-1	-1
Effect of one-percentage-point increase on accumulated postretirement benefit obligation for U.S. postretirement plans	40	24
Effect of one-percentage-point decrease on accumulated postretirement benefit obligation for U.S. postretirement plans	-34	-19
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of one-percentage-point increase on benefits earned and interest cost for U.S. postretirement plans	17	37
Effect of one-percentage-point decrease on benefits earned and interest cost for U.S. postretirement plans	-14	-29
Effect of one-percentage-point increase on accumulated postretirement benefit obligation for U.S. postretirement plans	197	181
Effect of one-percentage-point decrease on accumulated postretirement benefit obligation for U.S. postretirement plans	($161)	($137)

RETIREMENT_BENEFITS_Health_Car

RETIREMENT BENEFITS - Health Care Cost-Trend Rate (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
U.S. Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost increase following year (as percent)	7.50%	8.00%
Ultimate rate to which cost increase is assumed to decline (as percent)	5.00%	5.00%
Year in which the ultimate rate is reached	2020	2020
Non-U.S. Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost increase following year (as percent)	6.94%	6.95%
Ultimate rate to which cost increase is assumed to decline (as percent)	6.93%	6.94%
Year in which the ultimate rate is reached	2027	2029

RETIREMENT_BENEFITS_Plan_Asset

RETIREMENT BENEFITS - Plan Assets (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		100.00%	100.00%
U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		100.00%	100.00%
Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		100.00%	100.00%
Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		100.00%	100.00%
Forecast | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	100.00%
Forecast | Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	100.00%
Equity securities | U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		20.00%	19.00%
Equity securities | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target maximum asset allocation (as a percent)		67.00%	69.00%
Target minimum asset allocation (as a percent)		0.00%	0.00%
Equity securities | U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		20.00%	19.00%
Equity securities | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target maximum asset allocation (as a percent)		42.00%	41.00%
Target minimum asset allocation (as a percent)		0.00%	0.00%
Equity securities | Minimum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		0.00%
Equity securities | Maximum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		30.00%
Equity securities | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		17.00%	20.00%
Equity securities | Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		42.00%	41.00%
Equity securities | Forecast | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	17.00%
Equity securities | Forecast | Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	41.00%
Debt securities | U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		44.00%	42.00%
Debt securities | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target maximum asset allocation (as a percent)		100.00%	99.00%
Target minimum asset allocation (as a percent)		0.00%	0.00%
Debt securities | U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		44.00%	42.00%
Debt securities | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target maximum asset allocation (as a percent)		100.00%	100.00%
Target minimum asset allocation (as a percent)		54.00%	51.00%
Debt securities | Minimum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		25.00%
Debt securities | Maximum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		73.00%
Debt securities | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		77.00%	72.00%
Debt securities | Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		54.00%	51.00%
Debt securities | Forecast | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	78.00%
Debt securities | Forecast | Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	56.00%
Real estate | U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		4.00%	5.00%
Real estate | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target maximum asset allocation (as a percent)		21.00%	19.00%
Target minimum asset allocation (as a percent)		0.00%	0.00%
Real estate | U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		4.00%	5.00%
Real estate | Minimum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		0.00%
Real estate | Maximum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		7.00%
Real estate | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		0.00%	1.00%
Real estate | Forecast | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	1.00%
Private equity | U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		8.00%	11.00%
Private equity | U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		8.00%	11.00%
Private equity | Minimum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		0.00%
Private equity | Maximum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		10.00%
Other investments | U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		24.00%	23.00%
Other investments | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target maximum asset allocation (as a percent)		100.00%	100.00%
Target minimum asset allocation (as a percent)		0.00%	0.00%
Other investments | U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		24.00%	23.00%
Other investments | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target maximum asset allocation (as a percent)		4.00%	8.00%
Target minimum asset allocation (as a percent)		0.00%	0.00%
Other investments | Minimum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		0.00%
Other investments | Maximum | U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)		22.00%
Other investments | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		6.00%	7.00%
Other investments | Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Weighted average allocation (as percent)		4.00%	8.00%
Other investments | Forecast | Weighted Average | Non - U.S. Pension Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	4.00%
Other investments | Forecast | Weighted Average | Non-U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Target asset allocation (as percent)	3.00%

RETIREMENT_BENEFITS_Fair_Value

RETIREMENT BENEFITS - Fair Value Disclosure (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Total assets	$13,716	$13,422
Other investment liabilities	-635	-659
Total net assets	13,081	12,763
U.S. pension and postretirement benefit plans | U.S. equity
Defined Benefit Plan Disclosure
Total assets	773	793
U.S. pension and postretirement benefit plans | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	601	442
U.S. pension and postretirement benefit plans | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	214	203
U.S. pension and postretirement benefit plans | Commingled funds
Defined Benefit Plan Disclosure
Total assets	939	977
U.S. pension and postretirement benefit plans | U.S. Treasury
Defined Benefit Plan Disclosure
Total assets	1,178	1,112
U.S. pension and postretirement benefit plans | U.S. Agency
Defined Benefit Plan Disclosure
Total assets	113	91
U.S. pension and postretirement benefit plans | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	1,533	1,387
U.S. pension and postretirement benefit plans | Foreign government
Defined Benefit Plan Disclosure
Total assets	357	349
U.S. pension and postretirement benefit plans | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	405	398
U.S. pension and postretirement benefit plans | State and municipal securities
Defined Benefit Plan Disclosure
Total assets	132	137
U.S. pension and postretirement benefit plans | Hedge funds
Defined Benefit Plan Disclosure
Total assets	3,193	3,258
U.S. pension and postretirement benefit plans | Asset-backed securities
Defined Benefit Plan Disclosure
Total assets	41	61
U.S. pension and postretirement benefit plans | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	76	64
U.S. pension and postretirement benefit plans | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	59	91
U.S. pension and postretirement benefit plans | Private equity
Defined Benefit Plan Disclosure
Total assets	1,631	2,106
U.S. pension and postretirement benefit plans | Derivatives
Defined Benefit Plan Disclosure
Total assets	649	609
U.S. pension and postretirement benefit plans | Other investments
Defined Benefit Plan Disclosure
Total assets	361	179
U.S. pension and postretirement benefit plans | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	12,255	12,257
U.S. pension and postretirement benefit plans | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	1,398	1,064
U.S. pension and postretirement benefit plans | Other investment receivables
Defined Benefit Plan Disclosure
Total assets	63	101
U.S. pension and postretirement benefit plans | Level 1
Defined Benefit Plan Disclosure
Total assets	2,889	2,665
Other investment liabilities	-17	-9
Total net assets	2,872	2,656
U.S. pension and postretirement benefit plans | Level 1 | U.S. equity
Defined Benefit Plan Disclosure
Total assets	773	793
U.S. pension and postretirement benefit plans | Level 1 | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	601	442
U.S. pension and postretirement benefit plans | Level 1 | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	214	203
U.S. pension and postretirement benefit plans | Level 1 | Commingled funds
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | U.S. Treasury
Defined Benefit Plan Disclosure
Total assets	1,178	1,112
U.S. pension and postretirement benefit plans | Level 1 | U.S. Agency
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Foreign government
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | State and municipal securities
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Hedge funds
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Asset-backed securities
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Private equity
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Derivatives
Defined Benefit Plan Disclosure
Total assets	12	8
U.S. pension and postretirement benefit plans | Level 1 | Other investments
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 1 | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	2,778	2,558
U.S. pension and postretirement benefit plans | Level 1 | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	111	107
U.S. pension and postretirement benefit plans | Level 1 | Other investment receivables
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 2
Defined Benefit Plan Disclosure
Total assets	8,111	7,232
Other investment liabilities	-618	-650
Total net assets	7,493	6,582
U.S. pension and postretirement benefit plans | Level 2 | U.S. equity
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 2 | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 2 | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 2 | Commingled funds
Defined Benefit Plan Disclosure
Total assets	939	977
U.S. pension and postretirement benefit plans | Level 2 | U.S. Treasury
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 2 | U.S. Agency
Defined Benefit Plan Disclosure
Total assets	113	91
U.S. pension and postretirement benefit plans | Level 2 | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	1,533	1,387
U.S. pension and postretirement benefit plans | Level 2 | Foreign government
Defined Benefit Plan Disclosure
Total assets	357	349
U.S. pension and postretirement benefit plans | Level 2 | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	405	398
U.S. pension and postretirement benefit plans | Level 2 | State and municipal securities
Defined Benefit Plan Disclosure
Total assets	132	137
U.S. pension and postretirement benefit plans | Level 2 | Hedge funds
Defined Benefit Plan Disclosure
Total assets	2,462	2,132
U.S. pension and postretirement benefit plans | Level 2 | Asset-backed securities
Defined Benefit Plan Disclosure
Total assets	41	61
U.S. pension and postretirement benefit plans | Level 2 | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	76	64
U.S. pension and postretirement benefit plans | Level 2 | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 2 | Private equity
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 2 | Derivatives
Defined Benefit Plan Disclosure
Total assets	637	601
U.S. pension and postretirement benefit plans | Level 2 | Other investments
Defined Benefit Plan Disclosure
Total assets	101	29
U.S. pension and postretirement benefit plans | Level 2 | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	6,796	6,226
U.S. pension and postretirement benefit plans | Level 2 | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	1,287	957
U.S. pension and postretirement benefit plans | Level 2 | Other investment receivables
Defined Benefit Plan Disclosure
Total assets	28	49
U.S. pension and postretirement benefit plans | Level 3
Defined Benefit Plan Disclosure
Total assets	2,716	3,525	4,239
Other investment liabilities	0	0
Total net assets	2,716	3,525
U.S. pension and postretirement benefit plans | Level 3 | U.S. equity
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Commingled funds
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | U.S. Treasury
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | U.S. Agency
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Foreign government
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | State and municipal securities
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Hedge funds
Defined Benefit Plan Disclosure
Total assets	731	1,126	1,524
U.S. pension and postretirement benefit plans | Level 3 | Asset-backed securities
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	59	91	130
U.S. pension and postretirement benefit plans | Level 3 | Private equity
Defined Benefit Plan Disclosure
Total assets	1,631	2,106	2,419
U.S. pension and postretirement benefit plans | Level 3 | Derivatives
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Other investments
Defined Benefit Plan Disclosure
Total assets	260	150	142
U.S. pension and postretirement benefit plans | Level 3 | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	2,681	3,473	4,215
U.S. pension and postretirement benefit plans | Level 3 | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	0	0
U.S. pension and postretirement benefit plans | Level 3 | Other investment receivables
Defined Benefit Plan Disclosure
Total assets	35	52	24
U.S. Pension Plans
Defined Benefit Plan Disclosure
Total net assets	13,071	12,731
Allocable interest (as a percent)	99.90%	99.70%
U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Total net assets	10	32	50
Allocable interest (as a percent)	0.10%	0.30%
Non-U.S. pension and postretirement benefit plans
Defined Benefit Plan Disclosure
Total assets	9,167	8,826
Other investment liabilities	-726	-436
Total net assets	8,441	8,390
Non-U.S. pension and postretirement benefit plans | U.S. equity
Defined Benefit Plan Disclosure
Total assets	21	19
Non-U.S. pension and postretirement benefit plans | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	402	458
Non-U.S. pension and postretirement benefit plans | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	3,541	3,850
Non-U.S. pension and postretirement benefit plans | Commingled funds
Defined Benefit Plan Disclosure
Total assets	35	29
Non-U.S. pension and postretirement benefit plans | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	357	392
Non-U.S. pension and postretirement benefit plans | Foreign government
Defined Benefit Plan Disclosure
Total assets	3,540	2,779
Non-U.S. pension and postretirement benefit plans | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	919	892
Non-U.S. pension and postretirement benefit plans | Hedge funds
Defined Benefit Plan Disclosure
Total assets	10	11
Non-U.S. pension and postretirement benefit plans | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	1	4
Non-U.S. pension and postretirement benefit plans | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	33	33
Non-U.S. pension and postretirement benefit plans | Derivatives
Defined Benefit Plan Disclosure
Total assets	11	42
Non-U.S. pension and postretirement benefit plans | Other investments
Defined Benefit Plan Disclosure
Total assets	183	221
Non-U.S. pension and postretirement benefit plans | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	9,053	8,730
Non-U.S. pension and postretirement benefit plans | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	114	96
Non-U.S. pension and postretirement benefit plans | Level 1
Defined Benefit Plan Disclosure
Total assets	3,835	3,185
Other investment liabilities	-3	0
Total net assets	3,832	3,185
Non-U.S. pension and postretirement benefit plans | Level 1 | U.S. equity
Defined Benefit Plan Disclosure
Total assets	6	6
Non-U.S. pension and postretirement benefit plans | Level 1 | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	86	117
Non-U.S. pension and postretirement benefit plans | Level 1 | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	207	257
Non-U.S. pension and postretirement benefit plans | Level 1 | Commingled funds
Defined Benefit Plan Disclosure
Total assets	10	7
Non-U.S. pension and postretirement benefit plans | Level 1 | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 1 | Foreign government
Defined Benefit Plan Disclosure
Total assets	3,293	2,547
Non-U.S. pension and postretirement benefit plans | Level 1 | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	103	107
Non-U.S. pension and postretirement benefit plans | Level 1 | Hedge funds
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 1 | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	0	3
Non-U.S. pension and postretirement benefit plans | Level 1 | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 1 | Derivatives
Defined Benefit Plan Disclosure
Total assets	11	42
Non-U.S. pension and postretirement benefit plans | Level 1 | Other investments
Defined Benefit Plan Disclosure
Total assets	7	7
Non-U.S. pension and postretirement benefit plans | Level 1 | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	3,723	3,093
Non-U.S. pension and postretirement benefit plans | Level 1 | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	112	92
Non-U.S. pension and postretirement benefit plans | Level 2
Defined Benefit Plan Disclosure
Total assets	5,076	5,342
Other investment liabilities	-723	-436
Total net assets	4,353	4,906
Non-U.S. pension and postretirement benefit plans | Level 2 | U.S. equity
Defined Benefit Plan Disclosure
Total assets	15	13
Non-U.S. pension and postretirement benefit plans | Level 2 | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	271	292
Non-U.S. pension and postretirement benefit plans | Level 2 | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	3,334	3,593
Non-U.S. pension and postretirement benefit plans | Level 2 | Commingled funds
Defined Benefit Plan Disclosure
Total assets	25	22
Non-U.S. pension and postretirement benefit plans | Level 2 | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	357	392
Non-U.S. pension and postretirement benefit plans | Level 2 | Foreign government
Defined Benefit Plan Disclosure
Total assets	246	232
Non-U.S. pension and postretirement benefit plans | Level 2 | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	811	780
Non-U.S. pension and postretirement benefit plans | Level 2 | Hedge funds
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 2 | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	1	1
Non-U.S. pension and postretirement benefit plans | Level 2 | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	1	1
Non-U.S. pension and postretirement benefit plans | Level 2 | Derivatives
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 2 | Other investments
Defined Benefit Plan Disclosure
Total assets	13	12
Non-U.S. pension and postretirement benefit plans | Level 2 | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	5,074	5,338
Non-U.S. pension and postretirement benefit plans | Level 2 | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	2	4
Non-U.S. pension and postretirement benefit plans | Level 3
Defined Benefit Plan Disclosure
Total assets	256	299	300
Other investment liabilities	0	0
Total net assets	256	299
Non-U.S. pension and postretirement benefit plans | Level 3 | U.S. equity
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. equity
Defined Benefit Plan Disclosure
Total assets	45	49	48
Non-U.S. pension and postretirement benefit plans | Level 3 | Mutual Funds
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Commingled funds
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | U.S. corporate bonds
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Foreign government
Defined Benefit Plan Disclosure
Total assets	1	0	4
Non-U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. corporate bond
Defined Benefit Plan Disclosure
Total assets	5	5	4
Non-U.S. pension and postretirement benefit plans | Level 3 | Hedge funds
Defined Benefit Plan Disclosure
Total assets	10	11	16
Non-U.S. pension and postretirement benefit plans | Level 3 | Mortgage-backed securities
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Annuity contracts
Defined Benefit Plan Disclosure
Total assets	32	32	6
Non-U.S. pension and postretirement benefit plans | Level 3 | Derivatives
Defined Benefit Plan Disclosure
Total assets	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Other investments
Defined Benefit Plan Disclosure
Total assets	163	202	219
Non-U.S. pension and postretirement benefit plans | Level 3 | Total investments at fair value
Defined Benefit Plan Disclosure
Total assets	256	299	297
Non-U.S. pension and postretirement benefit plans | Level 3 | Cash and short-term investments
Defined Benefit Plan Disclosure
Total assets	$0	$0	$3

RETIREMENT_BENEFITS_Level_3_Ro

RETIREMENT BENEFITS - Level 3 Roll Forward (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
U.S. pension and postretirement benefit plans
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	$13,716	$13,422
U.S. pension and postretirement benefit plans | U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	773	793
U.S. pension and postretirement benefit plans | Non-U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	601	442
U.S. pension and postretirement benefit plans | Mutual Funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	214	203
U.S. pension and postretirement benefit plans | U.S. corporate bonds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	1,533	1,387
U.S. pension and postretirement benefit plans | Foreign government
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	357	349
U.S. pension and postretirement benefit plans | Non-U.S. corporate bond
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	405	398
U.S. pension and postretirement benefit plans | Hedge funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	3,193	3,258
U.S. pension and postretirement benefit plans | Annuity contracts
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	59	91
U.S. pension and postretirement benefit plans | Private equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	1,631	2,106
U.S. pension and postretirement benefit plans | Other investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	361	179
U.S. pension and postretirement benefit plans | Total investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	12,255	12,257
U.S. pension and postretirement benefit plans | Cash and short-term investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	1,398	1,064
U.S. pension and postretirement benefit plans | Other investment receivables
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	63	101
U.S. pension and postretirement benefit plans | Level 3
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	3,525	4,239
Realized gains (losses)	303	309
Unrealized gains (losses)	-218	57
Purchases, sales, and issuances	-732	-542
Transfers in and/or out of Level 3	-162	-538
Plan assets at fair value at end of period	2,716	3,525
U.S. pension and postretirement benefit plans | Level 3 | U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
U.S. pension and postretirement benefit plans | Level 3 | Mutual Funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
U.S. pension and postretirement benefit plans | Level 3 | U.S. corporate bonds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
U.S. pension and postretirement benefit plans | Level 3 | Foreign government
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. corporate bond
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
U.S. pension and postretirement benefit plans | Level 3 | Hedge funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	1,126	1,524
Realized gains (losses)	63	45
Unrealized gains (losses)	-25	69
Purchases, sales, and issuances	-264	19
Transfers in and/or out of Level 3	-169	-531
Plan assets at fair value at end of period	731	1,126
U.S. pension and postretirement benefit plans | Level 3 | Annuity contracts
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	91	130
Realized gains (losses)	0	0
Unrealized gains (losses)	-1	-9
Purchases, sales, and issuances	-31	-33
Transfers in and/or out of Level 3	0	3
Plan assets at fair value at end of period	59	91
U.S. pension and postretirement benefit plans | Level 3 | Private equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	2,106	2,419
Realized gains (losses)	241	264
Unrealized gains (losses)	-187	-10
Purchases, sales, and issuances	-529	-564
Transfers in and/or out of Level 3	0	-3
Plan assets at fair value at end of period	1,631	2,106
U.S. pension and postretirement benefit plans | Level 3 | Other investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	150	142
Realized gains (losses)	-1	0
Unrealized gains (losses)	-5	7
Purchases, sales, and issuances	109	8
Transfers in and/or out of Level 3	7	-7
Plan assets at fair value at end of period	260	150
U.S. pension and postretirement benefit plans | Level 3 | Total investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	3,473	4,215
Realized gains (losses)	303	309
Unrealized gains (losses)	-218	57
Purchases, sales, and issuances	-715	-570
Transfers in and/or out of Level 3	-162	-538
Plan assets at fair value at end of period	2,681	3,473
U.S. pension and postretirement benefit plans | Level 3 | Cash and short-term investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
U.S. pension and postretirement benefit plans | Level 3 | Other investment receivables
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	52	24
Realized gains (losses)	0	0
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	-17	28
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at end of period	35	52
Non-U.S. pension and postretirement benefit plans
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	9,167	8,826
Non-U.S. pension and postretirement benefit plans | U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	21	19
Non-U.S. pension and postretirement benefit plans | Non-U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	402	458
Non-U.S. pension and postretirement benefit plans | Mutual Funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	3,541	3,850
Non-U.S. pension and postretirement benefit plans | U.S. corporate bonds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	357	392
Non-U.S. pension and postretirement benefit plans | Foreign government
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	3,540	2,779
Non-U.S. pension and postretirement benefit plans | Non-U.S. corporate bond
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	919	892
Non-U.S. pension and postretirement benefit plans | Hedge funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	10	11
Non-U.S. pension and postretirement benefit plans | Annuity contracts
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	33	33
Non-U.S. pension and postretirement benefit plans | Other investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	183	221
Non-U.S. pension and postretirement benefit plans | Total investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	9,053	8,730
Non-U.S. pension and postretirement benefit plans | Cash and short-term investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	114	96
Non-U.S. pension and postretirement benefit plans | Level 3
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	299	300
Unrealized gains (losses)	-5	8
Purchases, sales, and issuances	-32	-2
Transfers in and/or out of Level 3	-6	-7
Plan assets at fair value at end of period	256	299
Non-U.S. pension and postretirement benefit plans | Level 3 | U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. equity
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	49	48
Unrealized gains (losses)	-3	5
Purchases, sales, and issuances	0	0
Transfers in and/or out of Level 3	-1	-4
Plan assets at fair value at end of period	45	49
Non-U.S. pension and postretirement benefit plans | Level 3 | Mutual Funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | U.S. corporate bonds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at end of period	0	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Foreign government
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	0	4
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	0	0
Transfers in and/or out of Level 3	1	-4
Plan assets at fair value at end of period	1	0
Non-U.S. pension and postretirement benefit plans | Level 3 | Non-U.S. corporate bond
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	5	4
Unrealized gains (losses)	0	-1
Purchases, sales, and issuances	1	2
Transfers in and/or out of Level 3	-1	0
Plan assets at fair value at end of period	5	5
Non-U.S. pension and postretirement benefit plans | Level 3 | Hedge funds
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	11	16
Unrealized gains (losses)	-1	1
Purchases, sales, and issuances	0	-6
Transfers in and/or out of Level 3	0	0
Plan assets at fair value at end of period	10	11
Non-U.S. pension and postretirement benefit plans | Level 3 | Annuity contracts
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	32	6
Unrealized gains (losses)	0	3
Purchases, sales, and issuances	0	-1
Transfers in and/or out of Level 3	0	24
Plan assets at fair value at end of period	32	32
Non-U.S. pension and postretirement benefit plans | Level 3 | Other investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	202	219
Unrealized gains (losses)	-1	0
Purchases, sales, and issuances	-33	3
Transfers in and/or out of Level 3	-5	-20
Plan assets at fair value at end of period	163	202
Non-U.S. pension and postretirement benefit plans | Level 3 | Total investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	299	297
Unrealized gains (losses)	-5	8
Purchases, sales, and issuances	-32	-2
Transfers in and/or out of Level 3	-6	-4
Plan assets at fair value at end of period	256	299
Non-U.S. pension and postretirement benefit plans | Level 3 | Cash and short-term investments
Reconciliations of the beginning and ending balances during the period for Level 3 assets
Plan assets at fair value at beginning of period	0	3
Unrealized gains (losses)	0	0
Purchases, sales, and issuances	0	0
Transfers in and/or out of Level 3	0	-3
Plan assets at fair value at end of period	$0	$0

RETIREMENT_BENEFITS_Estimated_

RETIREMENT BENEFITS - Estimated Future Benefit Payments (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Expected U.S. postretirement benefit payments after Medicare Part D Subsidy
Expected subsidy received under EGWP	$11	$10.50
U.S. Pension Plans
Expected U.S. postretirement benefit payments after Medicare Part D Subsidy
2015	835
2016	860
2017	868
2018	882
2019	900
2020-2024	4,731
Non - U.S. Pension Plans
Expected U.S. postretirement benefit payments after Medicare Part D Subsidy
2015	368
2016	339
2017	366
2018	383
2019	413
2020-2024	2,452
U.S. Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Reduction in accumulated postretirement benefit obligation due to subsidy received	5	4
Reduction in postretirement expense due to subsidy received	0.2	3
Expected U.S. postretirement benefit payments before Medicare Part D subsidy
2015	73
2016	72
2018	71
2019	70
2019	68
2020-2024	319
Expected U.S. postretirement benefit payments Medicare Part D subsidy
2015	0
2016	0
2017	0
2018	0
2019	0
2020-2024	2
Expected U.S. postretirement benefit payments after Medicare Part D Subsidy
2015	73
2016	72
2017	71
2018	70
2019	68
2020-2024	317
Non-U.S. Postretirement Benefit Plans
Expected U.S. postretirement benefit payments after Medicare Part D Subsidy
2015	65
2016	70
2017	75
2018	81
2019	88
2020-2024	$574

RETIREMENT_BENEFITS_Post_Emplo

RETIREMENT BENEFITS - Post Employment and Defined Contribution Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Early Retiree Reinsurance Program
Reimbursements received under Early Retiree Reinsurance Program	$8,000,000
Reimbursements used to reduce health benefit costs		3,000,000	5,000,000
Defined Contribution Plans
Maximum percentage contribution by employer of employees eligible pay	6.00%
Maximum compensation to be eligible for fixed contribution from employer	100,000
Percentage of fixed contribution by employer, for eligible employees whose compensation is $100,000 or less	2.00%
Pretax expense associated with Citigroup 401(k) plan	383,000,000	394,000,000	384,000,000
U.S. Postretirement Benefit Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	0	0	0
Interest cost	33,000,000	33,000,000	44,000,000
Prior service cost (benefit)	0	-1,000,000	-1,000,000
Net actuarial loss	184,000,000	-253,000,000
Total net (benefit) expense	32,000,000	30,000,000	43,000,000
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Discount rate (as a percent)	3.80%	4.35%
Health care cost increase following year (as percent)	7.50%	8.00%
Ultimate rate to which cost increase is assumed to decline (as percent)	5.00%	5.00%
Year in which the ultimate rate is reached	2020	2020
Postemployment Plans
Postemployment Plans
Funded status recognized	-256,000,000	-252,000,000
Amount in accumulated other comprehensive income (loss)	24,000,000	46,000,000
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	0	20,000,000	22,000,000
Interest cost	5,000,000	10,000,000	13,000,000
Prior service cost (benefit)	-31,000,000	-3,000,000	7,000,000
Net actuarial loss	14,000,000	17,000,000	13,000,000
Total service related expense	-12,000,000	44,000,000	55,000,000
Non-service related expense (benefit)	37,000,000	-14,000,000	24,000,000
Total net (benefit) expense	$25,000,000	$30,000,000	$79,000,000
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Discount rate (as a percent)	3.45%	4.05%
Health care cost increase following year (as percent)	7.50%	8.00%
Ultimate rate to which cost increase is assumed to decline (as percent)	5.00%	5.00%
Year in which the ultimate rate is reached	2020	2020

INCOME_TAXES_Components_of_Inc

INCOME TAXES - Components of Income Tax Provision (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current
Federal									$181	($260)	($71)
Foreign									3,281	3,788	3,869
State									388	-41	300
Total current income taxes									3,850	3,487	4,098
Deferred
Federal									2,184	2,550	-4,943
Foreign									361	-716	900
State									469	546	-48
Total deferred income taxes									3,014	2,380	-4,091
Provision (benefit) for income tax on continuing operations before noncontrolling interests	991	1,985	1,838	2,050	1,090	1,080	2,127	1,570	6,864	5,867	7
Provision (benefit) for income taxes on discontinued operations									12	-244	-52
Provision (benefit) for income taxes on cumulative effect of accounting changes									0	0	-58
Income tax expense (benefit) reported in stockholders’ equity related to:
Foreign currency translation									65	-48	-709
Investment securities									1,007	-1,300	369
Employee stock plans									-87	28	265
Cash flow hedges									207	625	311
Benefit plans									-660	698	-390
Retained earnings(2)									-353	0	0
Income taxes before non-controlling interests									7,055	5,626	-257
Provision (benefit) for effect of securities transactions									200	262	1,138
Provision (benefit) for effect of other-than-temporary-impairment losses									($148)	($187)	($1,740)

INCOME_TAXES_Effective_Income_

INCOME TAXES - Effective Income Tax Rate Reconciliation (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	3.50%	1.70%	3.00%
Foreign income tax rate differential	-0.90%	-2.20%	-4.60%
Audit settlements	-2.40%	-0.60%	-11.80%
Effect of tax law changes	1.20%	-0.30%	-0.10%
Nondeductible legal and related expenses	18.70%	0.80%	0.20%
Basis difference in affiliates	-2.50%	0.00%	-9.20%
Tax advantaged investments	-5.20%	-4.20%	-12.40%
Other, net	0.40%	-0.10%	0.00%
Effective income tax rate	47.80%	30.10%	0.10%
DTA change in enacted tax rate	$210
Tax benefit for the resolution of certain tax items	$347	$127

INCOME_TAXES_Deferred_Income_T

INCOME TAXES - Deferred Income Taxes (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Deferred tax assets
Credit loss deduction	$7,010	$8,356
Deferred compensation and employee benefits	4,676	4,067
Restructuring and settlement reserves	1,599	1,806
Unremitted foreign earnings	6,368	6,910
Investment and loan basis differences	4,979	4,409
Cash flow hedges	529	736
Tax credit and net operating loss carry-forwards	23,395	26,097
Fixed assets and leases	2,093	666
Other deferred tax assets	2,334	2,734
Gross deferred tax assets	52,983	55,781
Valuation allowance	0	0
Deferred tax assets after valuation allowance	52,983	55,781
Deferred tax liabilities
Deferred policy acquisition costs and value of insurance in force	-415	-455
Intangibles	-1,636	-1,076
Debt issuances	-866	-811
Other deferred tax liabilities	-559	-640
Gross deferred tax liabilities	-3,476	-2,982
Net deferred tax assets	$49,507	$52,799

INCOME_TAXES_Unrecognized_Tax_

INCOME TAXES - Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Total unrecognized tax benefits at January 1	$1,574,000,000	$3,109,000,000	$3,923,000,000
Net amount of increases for current year’s tax positions	135,000,000	58,000,000	136,000,000
Gross amount of increases for prior years’ tax positions	175,000,000	251,000,000	345,000,000
Gross amount of decreases for prior years’ tax positions	-772,000,000	-716,000,000	-1,246,000,000
Amounts of decreases relating to settlements	-28,000,000	-1,115,000,000	-44,000,000
Reductions due to lapse of statutes of limitation	-30,000,000	-15,000,000	-3,000,000
Foreign exchange, acquisitions and dispositions	6,000,000	2,000,000	-2,000,000
Total unrecognized tax benefits at December 31	1,060,000,000	1,574,000,000	3,109,000,000
Amount of unrecognized tax benefit which would impact effective tax rate if recognized	800,000,000	800,000,000	1,300,000,000
Uncertain tax positions recognized		$400,000,000

INCOME_TAXES_Interest_and_Pena

INCOME TAXES - Interest and Penalties (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Total interest and penalties in the Consolidated Balance Sheet at January 1, Pretax	$277,000,000	$492,000,000	$404,000,000
Total interest and penalties in the Consolidated Statement of Income, Pretax	-1,000,000	-108,000,000	114,000,000
Total interest and penalties in the Consolidated Balance Sheet at December 31, Pretax	269,000,000	277,000,000	492,000,000
Total interest and penalties in the Consolidated Balance Sheet at January 1, Net of tax	173,000,000	315,000,000	261,000,000
Total interest and penalties in the Consolidated Statement of Income, Net of tax	-1,000,000	-72,000,000	71,000,000
Total interest and penalties in the Consolidated Balance Sheet at December 31, Net of tax	169,000,000	173,000,000	315,000,000
Foreign penalties included in total interest and penalties in the balance sheet	2,000,000	2,000,000	10,000,000
State penalties included in total interest and penalties	3,000,000	4,000,000	4,000,000
IRS
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Gross uncertain tax positions for items expected to be resolved in next 12 months	120,000,000
IRS | Minimum
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Potential tax benefit for continuing operations for gross uncertain tax positions expected to be resolved in next 12 months	0
IRS | Maximum
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Potential tax benefit for continuing operations for gross uncertain tax positions expected to be resolved in next 12 months	120,000,000
State and Local
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Gross uncertain tax positions for items expected to be resolved in next 12 months	214,000,000
Gross uncertain tas positions for items expected to be resolved in the next 12 months, amount of interest	146,000,000
State and Local | Minimum
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Potential tax benefit for continuing operations for gross uncertain tax positions expected to be resolved in next 12 months	0
State and Local | Maximum
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Potential tax benefit for continuing operations for gross uncertain tax positions expected to be resolved in next 12 months	$230,000,000

INCOME_TAXES_Foreign_Earnings_

INCOME TAXES - Foreign Earnings (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Examination [Line Items]
Income (loss) from discontinued operations	$10,000,000	($242,000,000)	($109,000,000)
Accumulated undistributed profits of non-U.S. subsidiaries considered indefinitely reinvested	43,800,000,000
Additional tax liability to be provided should be undistributed earnings of foreign subsidiaries which were indefinitely invested were remitted currently	11,600,000,000
Total bad debt reserved not included in deferred tax liabilities calculation	358,000,000
Deferred tax liabilities not recognized relating to bad debt reserved	125,000,000
In offices outside the U.S.
Income Tax Examination [Line Items]
Pretax earnings	10,100,000,000	13,100,000,000	14,700,000,000
Income (loss) from discontinued operations		$100,000,000

INCOME_TAXES_Deferred_Tax_Asse

INCOME TAXES - Deferred Tax Assets by Jurisdiction (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deferred Tax Assets by Jurisdiction [Line Items]
Foreign tax credits (FTCs)	$17,600,000,000	$19,600,000,000
Other	2,334,000,000	2,734,000,000
Net deferred tax assets	49,507,000,000	52,799,000,000
Foreign tax credits related to companies filing U.S. federal tax separate from Citigroup's consolidated U.S. federal tax return expected to be utilized in consolidated return	1,000,000,000
U.S. federal
Deferred Tax Assets by Jurisdiction [Line Items]
Net operating losses (NOLs)	2,300,000,000	1,400,000,000
Foreign tax credits (FTCs)	17,600,000,000	19,600,000,000
General business credits (GBCs)	1,600,000,000	2,500,000,000
Future tax deductions and credits	21,300,000,000	21,500,000,000
Net deferred tax assets	42,800,000,000	45,000,000,000
Deferred tax liability to be reversed in carry forward period	2,000,000,000
Tax carryforwards related to companies that file U.S. federal tax separate from Citigroup's non-consolidated U.S. federal tax return	600,000,000	600,000,000
NOL carryforwards related to companies filing U.S. federal tax separate from Citigroup's consolidated U.S. federal tax return expected to be utilized in the consolidated return	1,700,000,000	800,000,000
State and Local
Deferred Tax Assets by Jurisdiction [Line Items]
Future tax deductions and credits	2,000,000,000	2,400,000,000
Net deferred tax assets	3,900,000,000	4,300,000,000
New York
Deferred Tax Assets by Jurisdiction [Line Items]
Net operating losses (NOLs)	1,500,000,000	1,400,000,000
Other state
Deferred Tax Assets by Jurisdiction [Line Items]
Net operating losses (NOLs)	400,000,000	500,000,000
Foreign
Deferred Tax Assets by Jurisdiction [Line Items]
Future tax deductions and credits	2,100,000,000	2,100,000,000
Net deferred tax assets	2,800,000,000	3,500,000,000
Foreign tax credits related to companies filing U.S. federal tax separate from Citigroup's consolidated U.S. federal tax return expected to be utilized in consolidated return	1,000,000,000	700,000,000
APB 23 Subsidiaries
Deferred Tax Assets by Jurisdiction [Line Items]
Net operating losses (NOLs)	200,000,000	200,000,000
Non APB 23 Subsidiaries
Deferred Tax Assets by Jurisdiction [Line Items]
Net operating losses (NOLs)	$500,000,000	$1,200,000,000

INCOME_TAXES_Tax_Credit_Carryf

INCOME TAXES - Tax Credit Carryforward and Expiration Dates (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Operating Loss and Tax Carryforwards [Line Items]
Total APB subsidiary NOL carryforward	$200,000,000	$200,000,000
Foreign tax credits related to companies filing U.S. federal tax separate from Citigroup's consolidated U.S. federal tax return expected to be utilized in consolidated return	1,000,000,000
Total	49,507,000,000	52,799,000,000
Amount of taxable income necessary to fully realize U.S. federal, state and local DTAs	81,000,000,000
U.S. Federal and New York State and City NOL carryforward period	20 years
U.S. foreign tax credit carryforward period	10 years
Limit on utilization of foreign tax credit carryforwards (as percent)	35.00%
Domestic losses allowed to be reclassified as foreign source income	59,000,000,000
Limit on domestic losses to be reclassified as foreign source income (as a percent)	50.00%
Foreign tax credits (FTCs)	17,600,000,000	19,600,000,000
Increase (decrease) in deferred tax assets	-2,000,000,000
Increase (decrease) in deferred tax assets due to FTC carryforwards	-3,300,000,000
Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	17,600,000,000	19,600,000,000
Foreign tax credits related to companies filing U.S. federal tax separate from Citigroup's consolidated U.S. federal tax return expected to be utilized in consolidated return	1,000,000,000	700,000,000
Total	2,800,000,000	3,500,000,000
U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	1,600,000,000	2,500,000,000
Operating loss carryforward	6,500,000,000	4,000,000,000
Total	42,800,000,000	45,000,000,000
Foreign tax credits (FTCs)	17,600,000,000	19,600,000,000
New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	12,300,000,000	9,600,000,000
New York City tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	4,400,000,000	6,100,000,000
2017 | Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	1,900,000,000	4,700,000,000
2018 | Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	5,200,000,000	5,200,000,000
2019 | Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	1,200,000,000	1,200,000,000
2020 | Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	3,100,000,000	3,100,000,000
2021 | Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	1,800,000,000	1,400,000,000
2022 | Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	3,400,000,000	3,300,000,000
2023 | Foreign
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	1,000,000,000	700,000,000
2027 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	200,000,000	200,000,000
2027 | New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	100,000,000
2027 | New York City tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	100,000,000
2028 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	0	400,000,000
Operating loss carryforward	100,000,000	100,000,000
2028 | New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	6,500,000,000
2028 | New York City tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	3,800,000,000	3,900,000,000
2029 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	0	400,000,000
2029 | New York City tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	1,500,000,000
2030 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	400,000,000	400,000,000
Operating loss carryforward	300,000,000	300,000,000
2030 | New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	2,000,000,000
2031 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	300,000,000	400,000,000
Operating loss carryforward	1,700,000,000	1,700,000,000
2031 | New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	100,000,000
2031 | New York City tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	100,000,000	0
2032 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	400,000,000	500,000,000
2032 | New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	900,000,000
2032 | New York City tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	500,000,000	600,000,000
2033 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	300,000,000	400,000,000
Operating loss carryforward	1,900,000,000	1,700,000,000
2033 | New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	0	0
2034 | U.S. federal
Operating Loss and Tax Carryforwards [Line Items]
Tax credit carryforward	200,000,000	0
Operating loss carryforward	2,300,000,000	0
2034 | New York state tax authority
Operating Loss and Tax Carryforwards [Line Items]
Operating loss carryforward	12,300,000,000	0
Various
Operating Loss and Tax Carryforwards [Line Items]
Total APB subsidiary NOL carryforward	$200,000,000	$200,000,000

EARNINGS_PER_SHARE_Details

EARNINGS PER SHARE (Details) (USD $)	0 Months Ended	3 Months Ended								12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 17, 2012	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Earnings Per Share [Abstract]
Income from continuing operations before attribution of noncontrolling interests		$382	$2,914	$253	$3,951	$2,324	$3,186	$4,188	$3,931	$7,500		$13,630		$7,818
Less: Noncontrolling interests from continuing operations										185		227		219
Net income from continuing operations (for EPS purposes)										7,315		13,403		7,599
Income (loss) from discontinued operations, net of taxes		-1	-16	-22	37	181	92	30	-33	-2		270		-58
Citigroup’s net income		350	2,839	181	3,943	2,455	3,227	4,182	3,808	7,313		13,673		7,541
Less: Preferred dividends										511		194		26
Net income available to common shareholders										6,802		13,479		7,515
Less: Dividends and undistributed earnings allocated to employee restricted and deferred shares with nonforfeitable rights to dividends, applicable to basic EPS										111		263		166
Net income allocated to common shareholders for basic EPS										6,691		13,216		7,349
Add: Interest expense, net of tax, and dividends on convertible securities and adjustment of undistributed earnings allocated to employee restricted and deferred shares with nonforfeitable rights to dividends, applicable to diluted EPS										0		1		11
Net income allocated to common shareholders for diluted EPS										$6,691		$13,217		$7,360
Weighted-average common shares outstanding applicable to basic EPS										3,031,600,000		3,035,800,000		2,930,600,000
Effect of dilutive securities
T-DECs (in shares)										0		0		84,200,000
Options (in shares)										5,100,000		5,300,000		0
Other employee plans (in shares)										300,000		500,000		600,000
Convertible securities (in shares)										0		0		100,000
Adjusted weighted-average common shares outstanding applicable to diluted EPS										3,037,000,000		3,041,600,000		3,015,500,000
Basic earnings per share
Income from continuing operations (in dollars per share)		$0.06	$0.89	$0.03	$1.22	$0.71	$0.98	$1.34	$1.24	$2.21	[1]	$4.27	[1]	$2.53	[1]
Discontinued operations (in dollars per share)										$0	[1]	$0.09	[1]	($0.02)	[1]
Net income (in dollars per share)		$0.06	$0.88	$0.03	$1.24	$0.77	$1.01	$1.35	$1.23	$2.21	[1]	$4.35	[1]	$2.51	[1]
Diluted earnings per share
Income from continuing operations (in dollars per share)		$0.06	$0.88	$0.03	$1.22	$0.71	$0.98	$1.33	$1.24	$2.20	[1]	$4.26	[1]	$2.46	[1]
Discontinued operations (in dollars per share)										$0	[1]	$0.09	[1]	($0.02)	[1]
Net income (in dollars per share)		$0.06	$0.88	$0.03	$1.23	$0.77	$1	$1.34	$1.23	$2.20	[1]	$4.35	[1]	$2.44	[1]
Issuance of shares and T-DECs for TARP repayment (in shares)	96,337,772									0		0		96,338,000
Weighted-average options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per common share (in shares)										2,800,000		4,800,000		35,800,000
Antidilutive securities exercise price (in dollars per share)		$153.91				$101.11				$153.91		$101.11		$54.23
Warrants issued to U.S. Treasury as part of TARP and loss-sharing agreement | Warrant with the exercise price of $178.50
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per common share (in shares)										21,000,000		21,000,000		21,000,000
Antidilutive securities exercise price (in dollars per share)		$178.50				$178.50				$178.50		$178.50		$178.50
Warrants issued to U.S. Treasury as part of TARP and loss-sharing agreement | Warrant with the exercise price of $106.10
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per common share (in shares)										25,500,000		25,500,000		25,500,000
Antidilutive securities exercise price (in dollars per share)		$106.10				$106.10				$106.10		$106.10		$106.10
[1]	Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.

FEDERAL_FUNDS_SECURITIES_BORRO2

FEDERAL FUNDS, SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
Federal funds sold	$0	$20
Securities purchased under agreements to resell	123,979	136,649
Deposits paid for securities borrowed	118,591	120,368
Total	242,570	257,037
Federal funds purchased	334	910
Securities sold under agreements to repurchase	147,204	175,691
Deposits received for securities loaned	25,900	26,911
Total	$173,438	$203,512

FEDERAL_FUNDS_SECURITIES_BORRO3

FEDERAL FUNDS, SECURITIES BORROWED, LOANED, AND SUBJECT TO REPURCHASE AGREEMENTS - Offsetting (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Securities purchased under agreements to resell
Gross amounts of recognized assets	$180,318	$179,894
Gross amounts offset on the Consolidated Balance Sheet	56,339	43,245
Net amounts of assets included on the Consolidated Balance Sheet	123,979	136,649
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	94,353	105,226
Net amounts	29,626	31,423
Deposits paid for securities borrowed
Gross amounts of recognized assets	118,591	120,368
Net amounts of assets included on the Consolidated Balance Sheet	118,591	120,368
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	15,139	26,728
Net amounts	103,452	93,640
Total
Total	298,909	300,262
Gross amounts offset on the Consolidated Balance Sheet	56,339	43,245
Net amounts of assets included on the Consolidated Balance Sheet	242,570	257,017
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	109,492	131,954
Net amounts	133,078	125,063
Securities sold under agreements to repurchase
Gross amounts of recognized liabilities	203,543	218,936
Gross amounts offset on the Consolidated Balance Sheet	56,339	43,245
Net amounts of liabilities included on the Consolidated Balance Sheet	147,204	175,691
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	72,928	80,082
Net amounts	74,276	95,609
Deposits received for securities loaned
Gross amounts of recognized liabilities	25,900	26,911
Net amounts of liabilities included on the Consolidated Balance Sheet	25,900	26,911
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	5,190	3,833
Net amounts	20,710	23,078
Total
Gross amounts of recognized liabilities	229,443	245,847
Gross amounts offset on the Consolidated Balance Sheet	56,339	43,245
Net amounts of liabilities included on the Consolidated Balance Sheet	173,104	202,602
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	78,118	83,915
Net amounts	$94,986	$118,687

BROKERAGE_RECEIVABLES_AND_BROK2

BROKERAGE RECEIVABLES AND BROKERAGE PAYABLES (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Brokers and Dealers [Abstract]
Receivables from customers	$10,380	$5,811
Receivables from brokers, dealers, and clearing organization	18,039	19,863
Total brokerage receivable	28,419	25,674
Payables to customers	33,984	34,751
Payables to brokers, dealers, and clearing organization	18,196	18,956
Total brokerage payable	$52,180	$53,707

TRADING_ACCOUNT_ASSETS_AND_LIA2

TRADING ACCOUNT ASSETS AND LIABILITIES (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Trading account assets and Trading account liabilities
Trading account assets	$296,786	$285,928
Trading account liabilities	139,036	108,762
Securities sold, not yet purchased
Trading account assets and Trading account liabilities
Trading account liabilities	70,944	61,508
Derivatives, liabilities
Trading account assets and Trading account liabilities
Trading account liabilities	68,092	47,254
Derivatives, assets
Trading account assets and Trading account liabilities
Trading account assets	67,957	52,821
Mortgage-backed securities - U.S. agency-sponsored
Trading account assets and Trading account liabilities
Trading account assets	27,053	23,955
Mortgage-backed securities - Prime
Trading account assets and Trading account liabilities
Trading account assets	1,271	1,422
Mortgage-backed securities - Alt-A
Trading account assets and Trading account liabilities
Trading account assets	709	721
Mortgage-backed securities - Subprime
Trading account assets and Trading account liabilities
Trading account assets	1,382	1,211
Mortgage-backed securities - Non-U.S. residential
Trading account assets and Trading account liabilities
Trading account assets	1,476	723
Mortgage-backed securities - Commercial
Trading account assets and Trading account liabilities
Trading account assets	4,343	2,574
Mortgage-backed securities
Trading account assets and Trading account liabilities
Trading account assets	36,234	30,606
U.S. Treasury and federal agency securities
Trading account assets and Trading account liabilities
Trading account assets	20,474	14,837
U.S. Treasury
Trading account assets and Trading account liabilities
Trading account assets	18,906	13,537
Agency obligations
Trading account assets and Trading account liabilities
Trading account assets	1,568	1,300
State and municipal securities
Trading account assets and Trading account liabilities
Trading account assets	3,402	3,207
Foreign government securities
Trading account assets and Trading account liabilities
Trading account assets	66,274	74,856
Corporate
Trading account assets and Trading account liabilities
Trading account assets	26,460	30,534
Equity securities
Trading account assets and Trading account liabilities
Trading account assets	57,846	61,776
Asset-backed securities
Trading account assets and Trading account liabilities
Trading account assets	4,546	5,616
Other trading assets
Trading account assets and Trading account liabilities
Trading account assets	$13,593	$11,675

INVESTMENTS_Overview_Details

INVESTMENTS - Overview (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investment Holdings
Investments	$333,443	$308,980
Interest and dividends on investments
Taxable interest	6,311	5,750	6,509
Interest exempt from U.S. federal income tax	439	732	683
Dividends	445	437	333
Total interest and dividends	7,195	6,919	7,525
Gross realized investments losses, excluding losses from other-than-temporary impairment
Gross realized investment gains	1,020	1,606	3,663
Gross realized investment losses	-450	-858	-412
Net realized gains (losses)	570	748	3,251
Available-for-sale Securities transferred from Held-to-maturity
Carrying value of HTM securities sold	8	935	2,110
Net realized gain (loss) on sale of held-to-maturity securities	0	-128	-187
Carrying value of securities reclassified to available-for-sale	889	989	244
OTTI losses on securities reclassified to available-for-sale	-25	-156	-59
Securities available-for-sale
Amortized cost	299,381	288,567
Gross unrealized gains	2,527	2,028
Gross unrealized losses	1,765	4,084
Fair value	300,143	286,511
Unrealized gains from impact of minority investments and the related allocations and pick up of unrealized gains and losses of AFS securities	27	36
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	404	1,508
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	1,361	2,576
Mortgage-backed securities - U.S. agency-sponsored
Securities available-for-sale
Amortized cost	35,647	42,494
Gross unrealized gains	603	391
Gross unrealized losses	159	888
Fair value	36,091	41,997
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	30	533
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	129	355
Mortgage-backed securities - Prime
Securities available-for-sale
Amortized cost	12	33
Gross unrealized gains	0	2
Gross unrealized losses	0	3
Fair value	12	32
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	0	3
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	0	0
Mortgage-backed securities - Alt-A
Securities available-for-sale
Amortized cost	43	84
Gross unrealized gains	1	10
Gross unrealized losses	0	0
Fair value	44	94
Mortgage-backed securities - Subprime
Securities available-for-sale
Amortized cost	0	12
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair value	0	12
Mortgage-backed securities - Non-U.S. residential
Securities available-for-sale
Amortized cost	8,247	9,976
Gross unrealized gains	67	95
Gross unrealized losses	7	4
Fair value	8,307	10,067
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	3	4
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	4	0
Mortgage-backed securities - Commercial
Securities available-for-sale
Amortized cost	551	455
Gross unrealized gains	6	6
Gross unrealized losses	3	8
Fair value	554	453
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	1	6
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	2	2
Mortgage-backed securities
Securities available-for-sale
Amortized cost	44,500	53,054
Gross unrealized gains	677	504
Gross unrealized losses	169	903
Fair value	45,008	52,655
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	34	546
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	135	357
U.S. Treasury
Securities available-for-sale
Amortized cost	110,492	68,891
Gross unrealized gains	353	476
Gross unrealized losses	127	147
Fair value	110,718	69,220
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	119	133
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	8	14
Agency obligations
Securities available-for-sale
Amortized cost	12,925	18,320
Gross unrealized gains	60	123
Gross unrealized losses	13	67
Fair value	12,972	18,376
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	9	66
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	4	1
U.S. Treasury and federal agency securities
Securities available-for-sale
Amortized cost	123,417	87,211
Gross unrealized gains	413	599
Gross unrealized losses	140	214
Fair value	123,690	87,596
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	128	199
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	12	15
State and municipal securities
Securities available-for-sale
Amortized cost	13,526	20,761
Gross unrealized gains	150	184
Gross unrealized losses	977	2,005
Fair value	12,699	18,940
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	15	29
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	962	1,976
Foreign government
Securities available-for-sale
Amortized cost	90,249	96,608
Gross unrealized gains	734	403
Gross unrealized losses	286	540
Fair value	90,697	96,471
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	147	477
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	139	63
Corporate
Securities available-for-sale
Amortized cost	12,033	11,039
Gross unrealized gains	215	210
Gross unrealized losses	91	119
Fair value	12,157	11,130
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	63	108
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	28	11
Asset-backed securities
Securities available-for-sale
Amortized cost	12,534	15,352
Gross unrealized gains	30	42
Gross unrealized losses	58	120
Fair value	12,506	15,274
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	13	57
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	45	63
Other debt securities
Securities available-for-sale
Amortized cost	661	710
Gross unrealized gains	0	1
Gross unrealized losses	0	0
Fair value	661	711
Debt securities
Securities available-for-sale
Amortized cost	296,920	284,735
Gross unrealized gains	2,219	1,943
Gross unrealized losses	1,721	3,901
Fair value	297,418	282,777
Percentage of fixed income investments in gross unrealized loss position for less than Year	92.00%
Percentage of fixed income investments in gross-unrealized-loss position for a year or more	95.00%
Equity securities
Securities available-for-sale
Amortized cost	2,461	3,832
Gross unrealized gains	308	85
Gross unrealized losses	44	183
Fair value	2,725	3,734
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	4	92
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	40	91
Fixed income securities
Securities available-for-sale
Unrealized loss of fixed income investments that have been in a gross-unrealized-loss position for less than a year	400
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	1,321
Mortgage securitizations - Non-agency-sponsored
Securities available-for-sale
Fair value	8,917
Securities available-for-sale (AFS)
Investment Holdings
Investments	300,143	286,511
Securities available-for-sale
Number of investments exceeded their fair value	7,600
Held-to-maturity Securities
Investment Holdings
Investments	23,921	10,599
Non-marketable equity securities | Fair value
Investment Holdings
Investments	2,758	4,705
Non-marketable equity securities | Carried at cost
Investment Holdings
Investments	$6,621	$7,165

INVESTMENTS_Fair_Value_of_AFS_

INVESTMENTS - Fair Value of AFS Securities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	$74,026	$116,664
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	404	1,508
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	24,821	26,397
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	1,361	2,576
Total fair value of available for sale securities that have been in an unrealized loss position	98,847	143,061
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	1,765	4,084
Mortgage-backed securities - U.S. agency-sponsored
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	4,198	19,377
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	30	533
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	5,547	5,643
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	129	355
Total fair value of available for sale securities that have been in an unrealized loss position	9,745	25,020
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	159	888
Mortgage-backed securities - Prime
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	5	85
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	0	3
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	2	3
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	0	0
Total fair value of available for sale securities that have been in an unrealized loss position	7	88
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	0	3
Mortgage-backed securities - Non-U.S. residential
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	1,276	2,103
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	3	4
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	199	5
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	4	0
Total fair value of available for sale securities that have been in an unrealized loss position	1,475	2,108
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	7	4
Mortgage-backed securities - Commercial
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	124	206
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	1	6
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	136	28
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	2	2
Total fair value of available for sale securities that have been in an unrealized loss position	260	234
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	3	8
Mortgage-backed securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	5,603	21,771
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	34	546
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	5,884	5,679
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	135	357
Total fair value of available for sale securities that have been in an unrealized loss position	11,487	27,450
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	169	903
U.S. Treasury
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	36,581	34,780
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	119	133
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	1,013	268
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	8	14
Total fair value of available for sale securities that have been in an unrealized loss position	37,594	35,048
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	127	147
Agency obligations
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	5,698	6,692
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	9	66
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	754	101
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	4	1
Total fair value of available for sale securities that have been in an unrealized loss position	6,452	6,793
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	13	67
U.S. Treasury and federal agency securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	42,279	41,472
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	128	199
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	1,767	369
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	12	15
Total fair value of available for sale securities that have been in an unrealized loss position	44,046	41,841
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	140	214
State and municipal securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	386	595
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	15	29
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	5,802	11,447
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	962	1,976
Total fair value of available for sale securities that have been in an unrealized loss position	6,188	12,042
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	977	2,005
Foreign government
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	18,495	35,783
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	147	477
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	5,984	5,778
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	139	63
Total fair value of available for sale securities that have been in an unrealized loss position	24,479	41,561
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	286	540
Corporate
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	3,511	4,565
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	63	108
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	1,350	387
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	28	11
Total fair value of available for sale securities that have been in an unrealized loss position	4,861	4,952
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	91	119
Asset-backed securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	3,701	11,207
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	13	57
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	3,816	1,931
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	45	63
Total fair value of available for sale securities that have been in an unrealized loss position	7,517	13,138
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	58	120
Equity securities
Available for Sale Securities Continuous Unrealized Loss Position
Fair value of available for sale securities that have been in an unrealized loss position for less than twelve months	51	1,271
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months	4	92
Fair value of available for sale securities that have been in an unrealized loss position for twelve months or longer	218	806
Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer	40	91
Total fair value of available for sale securities that have been in an unrealized loss position	269	2,077
Total gross unrealized losses of available for sale securities that have been in an unrealized loss position	$44	$183

INVESTMENTS_Fair_Value_of_AFS_1

INVESTMENTS - Fair Value of AFS Debt Securities by Contractual Maturity Date (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Available-for-sale Securities, Debt Maturities
Total amortized cost	$296,920	$284,735
Total fair value	297,418	282,777
Mortgage-backed securities
Available-for-sale Securities, Debt Maturities
Due within 1 year, amortized cost	44	87
After 1 but within 5 years, amortized cost	931	346
After 5 but within 10 years, amortized cost	1,362	2,898
After 10 years, amortized cost	42,163	49,723
Total amortized cost	44,500	53,054
Fair value, due within 1 year	44	87
Fair value, after 1 but within 5 years	935	354
Fair value, after 5 but within 10 years	1,387	2,932
Fair value, after 10 years	42,642	49,282
Total fair value	45,008	52,655
U.S. Treasury and federal agency securities
Available-for-sale Securities, Debt Maturities
Due within 1 year, amortized cost	13,070	15,789
After 1 but within 5 years, amortized cost	104,982	66,232
After 5 but within 10 years, amortized cost	2,286	2,129
After 10 years, amortized cost	3,079	3,061
Total amortized cost	123,417	87,211
Fair value, due within 1 year	13,084	15,853
Fair value, after 1 but within 5 years	105,131	66,457
Fair value, after 5 but within 10 years	2,325	2,185
Fair value, after 10 years	3,150	3,101
Total fair value	123,690	87,596
State and municipal securities
Available-for-sale Securities, Debt Maturities
Due within 1 year, amortized cost	590	576
After 1 but within 5 years, amortized cost	3,672	3,731
After 5 but within 10 years, amortized cost	532	439
After 10 years, amortized cost	8,732	16,015
Total amortized cost	13,526	20,761
Fair value, due within 1 year	590	581
Fair value, after 1 but within 5 years	3,677	3,735
Fair value, after 5 but within 10 years	546	482
Fair value, after 10 years	7,886	14,142
Total fair value	12,699	18,940
Foreign government
Available-for-sale Securities, Debt Maturities
Due within 1 year, amortized cost	31,355	37,005
After 1 but within 5 years, amortized cost	41,913	51,344
After 5 but within 10 years, amortized cost	16,008	7,314
After 10 years, amortized cost	973	945
Total amortized cost	90,249	96,608
Fair value, due within 1 year	31,382	36,959
Fair value, after 1 but within 5 years	42,467	51,304
Fair value, after 5 but within 10 years	15,779	7,216
Fair value, after 10 years	1,069	992
Total fair value	90,697	96,471
All other
Available-for-sale Securities, Debt Maturities
Due within 1 year, amortized cost	1,248	2,786
After 1 but within 5 years, amortized cost	10,442	10,934
After 5 but within 10 years, amortized cost	7,282	5,632
After 10 years, amortized cost	6,256	7,749
Total amortized cost	25,228	27,101
Fair value, due within 1 year	1,251	2,733
Fair value, after 1 but within 5 years	10,535	11,020
Fair value, after 5 but within 10 years	7,318	5,641
Fair value, after 10 years	6,220	7,721
Total fair value	$25,324	$27,115

INVESTMENTS_Debt_Securities_He

INVESTMENTS - Debt Securities Held-to-Maturity (Details) (USD $)	3 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Debt Securities Held-to-maturity
Amortized cost		$24,701,000,000	$11,274,000,000
Net unrealized losses recognized in AOCI		-780,000,000	-675,000,000
Carrying value		23,921,000,000	10,599,000,000
Gross unrecognized gains		1,111,000,000	769,000,000
Gross unrecognized losses		-361,000,000	-375,000,000
Fair value		24,671,000,000	10,993,000,000
Fair Value of AFS securities transferred to HTM	11,800,000,000
Mortgage-backed securities - U.S. agency-sponsored
Debt Securities Held-to-maturity
Amortized cost		8,795,000,000
Net unrealized losses recognized in AOCI		95,000,000
Carrying value		8,890,000,000
Gross unrecognized gains		106,000,000
Gross unrecognized losses		-6,000,000
Fair value		8,990,000,000
Mortgage-backed securities - Prime
Debt Securities Held-to-maturity
Amortized cost		60,000,000	72,000,000
Net unrealized losses recognized in AOCI		-12,000,000	-16,000,000
Carrying value		48,000,000	56,000,000
Gross unrecognized gains		6,000,000	5,000,000
Gross unrecognized losses		-1,000,000	-2,000,000
Fair value		53,000,000	59,000,000
Mortgage-backed securities - Alt-A
Debt Securities Held-to-maturity
Amortized cost		1,125,000,000	1,379,000,000
Net unrealized losses recognized in AOCI		-213,000,000	-287,000,000
Carrying value		912,000,000	1,092,000,000
Gross unrecognized gains		537,000,000	449,000,000
Gross unrecognized losses		-287,000,000	-263,000,000
Fair value		1,162,000,000	1,278,000,000
Mortgage-backed securities - Subprime
Debt Securities Held-to-maturity
Amortized cost		6,000,000	2,000,000
Net unrealized losses recognized in AOCI		-1,000,000	0
Carrying value		5,000,000	2,000,000
Gross unrecognized gains		15,000,000	1,000,000
Gross unrecognized losses		0	0
Fair value		20,000,000	3,000,000
Mortgage-backed securities - Non-U.S. residential
Debt Securities Held-to-maturity
Amortized cost		983,000,000	1,372,000,000
Net unrealized losses recognized in AOCI		-137,000,000	-206,000,000
Carrying value		846,000,000	1,166,000,000
Gross unrecognized gains		92,000,000	60,000,000
Gross unrecognized losses		0	-20,000,000
Fair value		938,000,000	1,206,000,000
Mortgage-backed securities - Commercial
Debt Securities Held-to-maturity
Amortized cost		8,000,000	10,000,000
Net unrealized losses recognized in AOCI		0	0
Carrying value		8,000,000	10,000,000
Gross unrecognized gains		1,000,000	1,000,000
Gross unrecognized losses		0	0
Fair value		9,000,000	11,000,000
Mortgage-backed securities
Debt Securities Held-to-maturity
Amortized cost		10,977,000,000	2,835,000,000
Net unrealized losses recognized in AOCI		-268,000,000	-509,000,000
Carrying value		10,709,000,000	2,326,000,000
Gross unrecognized gains		757,000,000	516,000,000
Gross unrecognized losses		-294,000,000	-285,000,000
Fair value		11,172,000,000	2,557,000,000
State and municipal securities
Debt Securities Held-to-maturity
Amortized cost		8,443,000,000	1,394,000,000
Net unrealized losses recognized in AOCI		-494,000,000	-62,000,000
Carrying value		7,949,000,000	1,332,000,000
Gross unrecognized gains		227,000,000	50,000,000
Gross unrecognized losses		-57,000,000	-70,000,000
Fair value		8,119,000,000	1,312,000,000
Fair Value of AFS securities transferred to HTM	6,400,000,000
Foreign government
Debt Securities Held-to-maturity
Amortized cost		4,725,000,000	5,628,000,000
Net unrealized losses recognized in AOCI		0	0
Carrying value		4,725,000,000	5,628,000,000
Gross unrecognized gains		77,000,000	70,000,000
Gross unrecognized losses		0	-10,000,000
Fair value		4,802,000,000	5,688,000,000
Corporate
Debt Securities Held-to-maturity
Amortized cost		0	818,000,000
Net unrealized losses recognized in AOCI		0	-78,000,000
Carrying value		0	740,000,000
Gross unrecognized gains		0	111,000,000
Gross unrecognized losses		0	0
Fair value		0	851,000,000
Asset-backed securities
Debt Securities Held-to-maturity
Amortized cost		556,000,000	599,000,000
Net unrealized losses recognized in AOCI		-18,000,000	-26,000,000
Carrying value		538,000,000	573,000,000
Gross unrecognized gains		50,000,000	22,000,000
Gross unrecognized losses		-10,000,000	-10,000,000
Fair value		578,000,000	585,000,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Debt Securities Held-to-maturity
Fair Value of AFS securities transferred to HTM	$5,400,000,000

INVESTMENTS_Debt_Securities_in

INVESTMENTS - Debt Securities in HTM in Unrecognized Loss Position (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months	$2,541	$1,253
Gross unrecognized losses less than 12 months	35	36
Fair value 12 months or longer	1,622	858
Gross unrecognized losses 12 months or longer	326	339
Fair value, total	4,163	2,111
Gross unrecognized losses, total	361	375
Unrealized loss, other than temporary impairment, not credit loss, recorded in AOCI	-780	-675
Mortgage-backed securities
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months	4	0
Gross unrecognized losses less than 12 months	0	0
Fair value 12 months or longer	1,134	358
Gross unrecognized losses 12 months or longer	294	285
Fair value, total	1,138	358
Gross unrecognized losses, total	294	285
State and municipal securities
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months	2,528	235
Gross unrecognized losses less than 12 months	34	20
Fair value 12 months or longer	314	302
Gross unrecognized losses 12 months or longer	23	50
Fair value, total	2,842	537
Gross unrecognized losses, total	57	70
Foreign government
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months	0	920
Gross unrecognized losses less than 12 months	0	10
Fair value 12 months or longer	0	0
Gross unrecognized losses 12 months or longer	0	0
Fair value, total	0	920
Gross unrecognized losses, total	0	10
Asset-backed securities
Held-to-maturity Securities, Continuous Unrealized Loss Position
Fair value less than 12 months	9	98
Gross unrecognized losses less than 12 months	1	6
Fair value 12 months or longer	174	198
Gross unrecognized losses 12 months or longer	9	4
Fair value, total	183	296
Gross unrecognized losses, total	$10	$10

INVESTMENTS_Carrying_Value_and

INVESTMENTS - Carrying Value and Fair Value of HTM Debt Securities by Contractual Maturity Dates (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount;
Carrying value	$23,921	$10,599
Held-to-maturity Securities, Debt Maturities, Fair Value;
Fair value	24,671	10,993
Akbank
Held-to-maturity Securities, Debt Maturities, Fair Value;
Equity investment ownership percentage	9.90%
Mortgage-backed securities
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount;
Due within 1 year, carrying value	0	0
After 1 but within 5 years, carrying value	0	0
After 5 but within 10 years, carrying value	863	10
After 10 years, carrying value	9,846	2,316
Carrying value	10,709	2,326
Held-to-maturity Securities, Debt Maturities, Fair Value;
Due within 1 year, fair value	0	0
After 1 but within 5 years, fair value	0	0
After 5 but within 10 years, fair value	869	11
After 10 years, fair value	10,303	2,546
Fair value	11,172	2,557
State and municipal securities
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount;
Due within 1 year, carrying value	36	8
After 1 but within 5 years, carrying value	24	17
After 5 but within 10 years, carrying value	144	69
After 10 years, carrying value	7,745	1,238
Carrying value	7,949	1,332
Held-to-maturity Securities, Debt Maturities, Fair Value;
Due within 1 year, fair value	38	9
After 1 but within 5 years, fair value	24	17
After 5 but within 10 years, fair value	148	72
After 10 years, fair value	7,909	1,214
Fair value	8,119	1,312
Foreign government
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount;
Due within 1 year, carrying value	0	0
After 1 but within 5 years, carrying value	4,725	5,628
After 5 but within 10 years, carrying value	0	0
After 10 years, carrying value	0	0
Carrying value	4,725	5,628
Held-to-maturity Securities, Debt Maturities, Fair Value;
Due within 1 year, fair value	0	0
After 1 but within 5 years, fair value	4,802	5,688
After 5 but within 10 years, fair value	0	0
After 10 years, fair value	0	0
Fair value	4,802	5,688
All other
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount;
Due within 1 year, carrying value	0	0
After 1 but within 5 years, carrying value	0	740
After 5 but within 10 years, carrying value	0	0
After 10 years, carrying value	538	573
Carrying value	538	1,313
Held-to-maturity Securities, Debt Maturities, Fair Value;
Due within 1 year, fair value	0	0
After 1 but within 5 years, fair value	0	851
After 5 but within 10 years, fair value	0	0
After 10 years, fair value	578	585
Fair value	$578	$1,436

INVESTMENTS_Mortgagebacked_Sec

INVESTMENTS - Mortgage-backed Securities (Details) (Mortgage-backed securities)	12 Months Ended
	Dec. 31, 2014
Current loans
Key assumptions for mortgage-backed securities
Default rate projection (as a percent)	10.00%
30-59 day deliquent loans
Key assumptions for mortgage-backed securities
Default rate projection (as a percent)	25.00%
60-90 day deliquent loans
Key assumptions for mortgage-backed securities
Default rate projection (as a percent)	70.00%
91+ day deliquent loans
Key assumptions for mortgage-backed securities
Default rate projection (as a percent)	100.00%

INVESTMENTS_Recognition_and_Me

INVESTMENTS - Recognition and Measurement of OTTI (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
OTTI on Investments disclosures
Total OTTI losses recognized during the period	$26	$163
Less: Impairments recognized in AOCI	8	98	66
Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	18	65
Impairment losses recognized in earnings for securities that the Company intends to sell or more- likely-than-not will be required to sell before recovery	406	470
Net impairment losses recognized in earnings	424	535	4,971
MSSB
OTTI on Investments disclosures
Percentage of ownership interest held	35.00%
Securities available-for-sale (AFS)
OTTI on Investments disclosures
Total OTTI losses recognized during the period	21	9
Less: Impairments recognized in AOCI	8	0
Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	13	9
Impairment losses recognized in earnings for securities that the Company intends to sell or more- likely-than-not will be required to sell before recovery	380	269
Net impairment losses recognized in earnings	393	278
Held-to-maturity Securities
OTTI on Investments disclosures
Total OTTI losses recognized during the period	5	154
Less: Impairments recognized in AOCI	0	98
Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	5	56
Impairment losses recognized in earnings for securities that the Company intends to sell or more- likely-than-not will be required to sell before recovery	26	0
Net impairment losses recognized in earnings	31	56
Other assets
OTTI on Investments disclosures
Total OTTI losses recognized during the period	0	0
Less: Impairments recognized in AOCI	0	0
Net impairment losses recognized in earnings for securities that the Company does not intend to sell nor will likely be required to sell	0	0
Impairment losses recognized in earnings for securities that the Company intends to sell or more- likely-than-not will be required to sell before recovery	0	201
Net impairment losses recognized in earnings	$0	$201

INVESTMENTS_Cumulative_OTTI_Cr

INVESTMENTS - Cumulative OTTI Credit Losses (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
AFS debt securities
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	$723
Credit impairments recognized in earnings on securities not previously impaired	13
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	-3
Balance at end of period	733
AFS debt securities | Mortgage-backed securities
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	295
Credit impairments recognized in earnings on securities not previously impaired	0
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	0
Balance at end of period	295
AFS debt securities | Foreign government securities
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	171
Credit impairments recognized in earnings on securities not previously impaired	0
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	0
Balance at end of period	171
AFS debt securities | Corporate
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	113
Credit impairments recognized in earnings on securities not previously impaired	8
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	-3
Balance at end of period	118
AFS debt securities | Other debt securities
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	144
Credit impairments recognized in earnings on securities not previously impaired	5
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	0
Balance at end of period	149
HTM debt securities
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	867
Credit impairments recognized in earnings on securities not previously impaired	5
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	-69
Balance at end of period	803
HTM debt securities | Mortgage-backed securities
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	678
Credit impairments recognized in earnings on securities not previously impaired	5
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	-13
Balance at end of period	670
HTM debt securities | Corporate
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	56
Credit impairments recognized in earnings on securities not previously impaired	0
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	-56
Balance at end of period	0
HTM debt securities | Other debt securities
Schedule of other-than-temporary impairment, credit losses recognized in earnings, roll forward
Balance at beginning of period	133
Credit impairments recognized in earnings on securities not previously impaired	0
Credit impairments recognized in earnings on securities that have been previously impaired	0
Reductions due to credit-impaired securities sold, transferred or matured	0
Balance at end of period	$133

INVESTMENTS_Alternative_Invest

INVESTMENTS - Alternative Investment Funds (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Investments in Alternative Investment Funds
Alternative investment funds, fair value	$970,000,000	$1,839,000,000
Alternative investment funds, unfunded commitments	229,000,000	206,000,000
Amount of fund assets valued using net asset values provided by third party asset managers which is included in the total fair value amount of alternative investment funds	800,000,000	1,600,000,000
Hedge funds
Investments in Alternative Investment Funds
Alternative investment funds, fair value	8,000,000	751,000,000
Alternative investment funds, unfunded commitments	0	0
Alternative investment funds, redemption frequency (if currently eligible)	Generally quarterly
Hedge funds | Minimum
Investments in Alternative Investment Funds
Alternative investment funds, redemption notice period	10 days
Hedge funds | Maximum
Investments in Alternative Investment Funds
Alternative investment funds, redemption notice period	95 days
Private equity funds
Investments in Alternative Investment Funds
Alternative investment funds, fair value	796,000,000	794,000,000
Alternative investment funds, unfunded commitments	205,000,000	170,000,000
Real estate funds
Investments in Alternative Investment Funds
Alternative investment funds, fair value	166,000,000	294,000,000
Alternative investment funds, unfunded commitments	$24,000,000	$36,000,000

LOANS_Consumer_Loans_Details

LOANS - Consumer Loans (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Loans
Number of loan categories	2
Loans, net of unearned income	$644,635,000,000	$665,472,000,000
Consumer
Loans
Total loans	370,652,000,000	394,403,000,000
Net unearned income	-682,000,000	-572,000,000
Loans, net of unearned income	369,970,000,000	393,831,000,000
Loans sold and/or reclassified to held-for-sale	7,900,000,000	11,500,000,000
Loans acquired related to acquisition		7,000,000,000
In U.S. offices | Consumer
Loans
Total loans	229,860,000,000	244,094,000,000
In U.S. offices | Consumer | Mortgage and real estate
Loans
Total loans	96,533,000,000	108,453,000,000
In U.S. offices | Consumer | Installment, revolving credit and other
Loans
Total loans	14,450,000,000	13,398,000,000
In U.S. offices | Consumer | Cards
Loans
Total loans	112,982,000,000	115,651,000,000
In U.S. offices | Consumer | Commercial and industrial
Loans
Total loans	5,895,000,000	6,592,000,000
In offices outside the U.S. | Consumer
Loans
Total loans	140,792,000,000	150,309,000,000
In offices outside the U.S. | Consumer | Mortgage and real estate
Loans
Total loans	54,462,000,000	55,511,000,000
In offices outside the U.S. | Consumer | Installment, revolving credit and other
Loans
Total loans	31,128,000,000	33,182,000,000
In offices outside the U.S. | Consumer | Cards
Loans
Total loans	32,032,000,000	36,740,000,000
In offices outside the U.S. | Consumer | Commercial and industrial
Loans
Total loans	22,561,000,000	24,107,000,000
In offices outside the U.S. | Consumer | Lease financing
Loans
Total loans	$609,000,000	$769,000,000

LOANS_Consumer_Loan_Delinquenc

LOANS - Consumer Loan Delinquency (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Delinquency status
Loans, net of unearned income	$644,635,000,000	$665,472,000,000
Loans at fair value	5,901,000,000	5,029,000,000
Residential first mortgages | Consumer Credit Scores (FICOs)
Consumer Loans Credit Quality Indicators, FICO score
Loan, credit score less than 620	8,911,000,000	11,860,000,000
Loan, credit score equal to or greater than 620 but less than 660	5,463,000,000	6,426,000,000
Loan, credit score equal to or greater than 660	45,783,000,000	46,207,000,000
Residential first mortgages | Loan to Values (LTVs)
Residential Mortgage Loan to Values
Loan, credit indicator ratio less than or equal to 80%	48,163,000,000	45,809,000,000
Loan, credit indicator ratio greater than 80% but less than or equal to 100%	9,480,000,000	13,458,000,000
Loan, credit indicator ratio greater than 100%	2,670,000,000	5,269,000,000
Home equity loans | Consumer Credit Scores (FICOs)
Consumer Loans Credit Quality Indicators, FICO score
Loan, credit score less than 620	3,257,000,000	4,093,000,000
Loan, credit score equal to or greater than 620 but less than 660	2,456,000,000	2,779,000,000
Loan, credit score equal to or greater than 660	20,957,000,000	23,152,000,000
Home equity loans | Loan to Values (LTVs)
Residential Mortgage Loan to Values
Loan, credit indicator ratio less than or equal to 80%	14,638,000,000	14,216,000,000
Loan, credit indicator ratio greater than 80% but less than or equal to 100%	7,267,000,000	8,685,000,000
Loan, credit indicator ratio greater than 100%	4,641,000,000	6,935,000,000
Credit cards | Consumer Credit Scores (FICOs)
Consumer Loans Credit Quality Indicators, FICO score
Loan, credit score less than 620	7,647,000,000	8,125,000,000
Loan, credit score equal to or greater than 620 but less than 660	10,296,000,000	10,693,000,000
Loan, credit score equal to or greater than 660	92,877,000,000	94,437,000,000
Installment and other | Consumer Credit Scores (FICOs)
Consumer Loans Credit Quality Indicators, FICO score
Loan, credit score less than 620	4,015,000,000	3,900,000,000
Loan, credit score equal to or greater than 620 but less than 660	2,520,000,000	2,399,000,000
Loan, credit score equal to or greater than 660	5,150,000,000	5,186,000,000
Consumer
Delinquency status
Number of days past due, non-accrual status	60 days	60 days
Loans, current	357,348,000,000	376,858,000,000
Loans, 30-89 days past due	4,529,000,000	5,957,000,000
Loans, greater than or equal to 90 days past due	4,650,000,000	5,745,000,000
Loans, Past due government guaranteed	3,443,000,000	5,271,000,000
Loans, net of unearned income	369,970,000,000	393,831,000,000
Loans, total non-accrual	5,924,000,000	7,095,000,000
Loans, 90 days past due and accruing	4,372,000,000	5,876,000,000
Loans less than this number of days past due are considered current	30 days	30 days
Consumer | Minimum
Delinquency status
Minimum number of payments made consecutively for the loans to be re-aged	1	1
Consumer | Maximum
Delinquency status
Minimum number of payments made consecutively for the loans to be re-aged	3	3
Consumer | Consumer Credit Scores (FICOs)
Consumer Loans Credit Quality Indicators, FICO score
Loan, credit score less than 620	23,830,000,000	27,978,000,000
Loan, credit score equal to or greater than 620 but less than 660	20,735,000,000	22,297,000,000
Loan, credit score equal to or greater than 660	164,767,000,000	168,982,000,000
Consumer | Loan to Values (LTVs)
Residential Mortgage Loan to Values
Loan, credit indicator ratio less than or equal to 80%	62,801,000,000	60,025,000,000
Loan, credit indicator ratio greater than 80% but less than or equal to 100%	16,747,000,000	22,143,000,000
Loan, credit indicator ratio greater than 100%	7,311,000,000	12,204,000,000
Consumer | Residential first mortgages
Delinquency status
Number of days past due, non-accrual status	90 days	90 days
Loans at fair value	43,000,000	900,000,000
Consumer | Home equity loans
Delinquency status
Number of days past due, non-accrual status	90 days	90 days
Consumer | Credit cards
Delinquency status
Number of days past due, non-accrual status	180 days	180 days
Consumer | Installment and other
Delinquency status
Number of days past due, non-accrual status	90 days	90 days
Consumer | Commercial market loans
Delinquency status
Number of days past due, non-accrual status	90 days	90 days
Consumer | Total GCB and Citi Holdings Consumer
Delinquency status
Loans, current	357,110,000,000	376,520,000,000
Loans, 30-89 days past due	4,519,000,000	5,944,000,000
Loans, greater than or equal to 90 days past due	4,639,000,000	5,729,000,000
Loans, Past due government guaranteed	3,443,000,000	5,271,000,000
Loans, net of unearned income	369,711,000,000	393,464,000,000
Loans, total non-accrual	5,894,000,000	7,052,000,000
Loans, 90 days past due and accruing	4,372,000,000	5,876,000,000
Consumer | Other
Delinquency status
Loans, current	238,000,000	338,000,000
Loans, 30-89 days past due	10,000,000	13,000,000
Loans, greater than or equal to 90 days past due	11,000,000	16,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	259,000,000	367,000,000
Loans, total non-accrual	30,000,000	43,000,000
Loans, 90 days past due and accruing	0	0
Consumer | Unsecured Revolving Loans
Delinquency status
Number of days past due, non-accrual status	180 days	180 days
Consumer | In North America Offices
Delinquency status
Loans, current	221,424,000,000	232,340,000,000
Loans, 30-89 days past due	3,191,000,000	4,220,000,000
Loans, greater than or equal to 90 days past due	3,459,000,000	4,303,000,000
Loans, Past due government guaranteed	3,443,000,000	5,271,000,000
Loans, net of unearned income	231,517,000,000	246,134,000,000
Loans, total non-accrual	4,406,000,000	5,226,000,000
Loans, 90 days past due and accruing	4,050,000,000	5,463,000,000
Consumer | In North America Offices | Residential first mortgages
Delinquency status
Loans, current	61,730,000,000	66,612,000,000
Loans, 30-89 days past due	1,280,000,000	2,044,000,000
Loans, greater than or equal to 90 days past due	1,371,000,000	1,975,000,000
Loans, Past due government guaranteed	3,443,000,000	5,271,000,000
Loans, net of unearned income	67,824,000,000	75,902,000,000
Loans, total non-accrual	2,746,000,000	3,415,000,000
Loans, 90 days past due and accruing	2,759,000,000	3,997,000,000
Loans, 30-89 days past due, guaranteed by U.S. government-sponsored agencies	600,000,000	1,200,000,000
Loans, greater than or equal to 90 days past due, guaranteed by U.S. government-sponsored agencies	2,800,000,000	4,100,000,000
Consumer | In North America Offices | Home equity loans
Delinquency status
Loans, current	27,262,000,000	30,603,000,000
Loans, 30-89 days past due	335,000,000	434,000,000
Loans, greater than or equal to 90 days past due	520,000,000	605,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	28,117,000,000	31,642,000,000
Loans, total non-accrual	1,271,000,000	1,452,000,000
Loans, 90 days past due and accruing	0	0
Consumer | In North America Offices | Credit cards
Delinquency status
Loans, current	111,441,000,000	113,886,000,000
Loans, 30-89 days past due	1,316,000,000	1,491,000,000
Loans, greater than or equal to 90 days past due	1,271,000,000	1,452,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	114,028,000,000	116,829,000,000
Loans, total non-accrual	0	0
Loans, 90 days past due and accruing	1,273,000,000	1,452,000,000
Consumer | In North America Offices | Installment and other
Delinquency status
Loans, current	12,361,000,000	12,609,000,000
Loans, 30-89 days past due	229,000,000	225,000,000
Loans, greater than or equal to 90 days past due	284,000,000	243,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	12,874,000,000	13,077,000,000
Loans, total non-accrual	254,000,000	247,000,000
Loans, 90 days past due and accruing	3,000,000	7,000,000
Consumer | In North America Offices | Commercial market loans
Delinquency status
Loans, current	8,630,000,000	8,630,000,000
Loans, 30-89 days past due	31,000,000	26,000,000
Loans, greater than or equal to 90 days past due	13,000,000	28,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	8,674,000,000	8,684,000,000
Loans, total non-accrual	135,000,000	112,000,000
Loans, 90 days past due and accruing	15,000,000	7,000,000
Consumer | In offices outside North America
Delinquency status
Loans, current	135,686,000,000	144,180,000,000
Loans, 30-89 days past due	1,328,000,000	1,724,000,000
Loans, greater than or equal to 90 days past due	1,180,000,000	1,426,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	138,194,000,000	147,330,000,000
Loans, total non-accrual	1,488,000,000	1,826,000,000
Loans, 90 days past due and accruing	322,000,000	413,000,000
Consumer | In offices outside North America | Residential first mortgages
Delinquency status
Loans, current	44,782,000,000	46,067,000,000
Loans, 30-89 days past due	312,000,000	435,000,000
Loans, greater than or equal to 90 days past due	223,000,000	332,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	45,317,000,000	46,834,000,000
Loans, total non-accrual	454,000,000	584,000,000
Loans, 90 days past due and accruing	0	0
Consumer | In offices outside North America | Home equity loans
Delinquency status
Loans, current	0	0
Loans, 30-89 days past due	0	0
Loans, greater than or equal to 90 days past due	0	0
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	0	0
Loans, total non-accrual	0	0
Loans, 90 days past due and accruing	0	0
Consumer | In offices outside North America | Credit cards
Delinquency status
Loans, current	30,327,000,000	34,733,000,000
Loans, 30-89 days past due	602,000,000	780,000,000
Loans, greater than or equal to 90 days past due	553,000,000	641,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	31,482,000,000	36,154,000,000
Loans, total non-accrual	413,000,000	402,000,000
Loans, 90 days past due and accruing	322,000,000	413,000,000
Consumer | In offices outside North America | Installment and other
Delinquency status
Loans, current	29,297,000,000	30,138,000,000
Loans, 30-89 days past due	328,000,000	398,000,000
Loans, greater than or equal to 90 days past due	149,000,000	158,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	29,774,000,000	30,694,000,000
Loans, total non-accrual	216,000,000	230,000,000
Loans, 90 days past due and accruing	0	0
Consumer | In offices outside North America | Commercial market loans
Delinquency status
Loans, current	31,280,000,000	33,242,000,000
Loans, 30-89 days past due	86,000,000	111,000,000
Loans, greater than or equal to 90 days past due	255,000,000	295,000,000
Loans, Past due government guaranteed	0	0
Loans, net of unearned income	31,621,000,000	33,648,000,000
Loans, total non-accrual	405,000,000	610,000,000
Loans, 90 days past due and accruing	$0	$0
Open-ended consumer loans
Delinquency status
Minimum number of payments made consecutively for the loans to be re-aged	3	3
Number of re-age modification limitations in twelve months	1	1
Number of re-age modification limitations in five years	2	2

LOANS_Impaired_Consumer_Loans_

LOANS - Impaired Consumer Loans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Q	Q
Financing receivable impaired
Maximum period of loan modification under Citi's short-term modification programs	12 months
Consumer
Financing receivable impaired
Recorded investment	$19,358	$23,793
Unpaid principal balance	21,070	25,727
Related specific allowance	3,917	4,633
Average carrying value	21,552	24,950
Interest income recognized	1,106	1,280	1,520
Number of quarters used to calculate the average recorded investment balance	4	4
Consumer | Residential first mortgages
Financing receivable impaired
Recorded investment	13,551	16,801
Unpaid principal balance	14,387	17,788
Related specific allowance	1,909	2,309
Average carrying value	15,389	17,616
Interest income recognized	690	790
Impaired financing receivable without specific allowance	1,896	2,169
Consumer | Home equity loans
Financing receivable impaired
Recorded investment	2,029	2,141
Unpaid principal balance	2,674	2,806
Related specific allowance	599	427
Average carrying value	2,075	2,116
Interest income recognized	74	81
Impaired financing receivable without specific allowance	554	568
Consumer | Credit cards
Financing receivable impaired
Recorded investment	2,407	3,339
Unpaid principal balance	2,447	3,385
Related specific allowance	849	1,178
Average carrying value	2,732	3,720
Interest income recognized	196	234
Consumer | Individual installment and other
Financing receivable impaired
Recorded investment	948	1,114
Unpaid principal balance	963	1,143
Related specific allowance	450	536
Average carrying value	975	1,094
Interest income recognized	124	153
Consumer | Commercial market loans
Financing receivable impaired
Recorded investment	423	398
Unpaid principal balance	599	605
Related specific allowance	110	183
Average carrying value	381	404
Interest income recognized	22	22
Impaired financing receivable without specific allowance	$158	$111

LOANS_Consumer_Troubled_Debt_R

LOANS - Consumer Troubled Debt Restructurings (Details) (Consumer, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Loans receivable
Period within which default occurred post-modification	1 year
Number of days past due, non-accrual status	60 days	60 days
Commercial market loans
Loans receivable
Number of days past due, non-accrual status	90 days	90 days
In North America Offices
Loans receivable
Number of loans modified	260,549	270,635
Post-modification recorded investment	3,951	5,958
Deferred principal	55	69
Contingent principal forgiveness	36	25
Principal forgiveness	31	250
Loans in default	1,085	2,013
In North America Offices | Residential first mortgages
Loans receivable
Number of loans modified	20,114	32,116
Post-modification recorded investment	2,478	4,160
Deferred principal	52	68
Contingent principal forgiveness	36	25
Principal forgiveness	16	158
Average interest rate reduction (as a percent)	1.00%	1.00%
Post-modification recorded investment for borrowers that have gone through Chapter 7 bankruptcy	322	502
Loans in default	715	1,532
In North America Offices | Residential first mortgages | New OCC guidance
Loans receivable
Post-modification recorded investment for borrowers that have gone through Chapter 7 bankruptcy	179	332
In North America Offices | Home equity loans
Loans receivable
Number of loans modified	7,444	12,774
Post-modification recorded investment	279	552
Deferred principal	3	1
Contingent principal forgiveness	0	0
Principal forgiveness	14	92
Average interest rate reduction (as a percent)	2.00%	1.00%
Post-modification recorded investment for borrowers that have gone through Chapter 7 bankruptcy	80	101
Loans in default	72	183
In North America Offices | Home equity loans | New OCC guidance
Loans receivable
Post-modification recorded investment for borrowers that have gone through Chapter 7 bankruptcy	69	85
In North America Offices | Credit cards
Loans receivable
Number of loans modified	185,962	172,211
Post-modification recorded investment	808	826
Deferred principal	0	0
Contingent principal forgiveness	0	0
Principal forgiveness	0	0
Average interest rate reduction (as a percent)	15.00%	14.00%
Loans in default	194	204
In North America Offices | Installment and other
Loans receivable
Number of loans modified	46,838	53,332
Post-modification recorded investment	351	381
Deferred principal	0	0
Contingent principal forgiveness	0	0
Principal forgiveness	0	0
Average interest rate reduction (as a percent)	7.00%	7.00%
Loans in default	95	91
In North America Offices | Commercial market loans
Loans receivable
Number of loans modified	191	202
Post-modification recorded investment	35	39
Deferred principal	0	0
Contingent principal forgiveness	0	0
Principal forgiveness	1	0
Average interest rate reduction (as a percent)	0.00%	0.00%
Loans in default	9	3
In offices outside North America
Loans receivable
Number of loans modified	204,254	228,459
Post-modification recorded investment	1,053	1,164
Deferred principal	0	2
Contingent principal forgiveness	0	0
Principal forgiveness	17	19
Loans in default	450	371
In offices outside North America | Residential first mortgages
Loans receivable
Number of loans modified	3,150	3,598
Post-modification recorded investment	103	159
Deferred principal	0	0
Contingent principal forgiveness	0	0
Principal forgiveness	1	2
Average interest rate reduction (as a percent)	1.00%	1.00%
Loans in default	24	54
In offices outside North America | Home equity loans
Loans receivable
Number of loans modified	67	68
Post-modification recorded investment	11	2
Deferred principal	0	0
Contingent principal forgiveness	0	0
Principal forgiveness	0	0
Average interest rate reduction (as a percent)	0.00%	0.00%
Loans in default	0	0
In offices outside North America | Credit cards
Loans receivable
Number of loans modified	139,128	165,350
Post-modification recorded investment	447	557
Deferred principal	0	0
Contingent principal forgiveness	0	0
Principal forgiveness	9	10
Average interest rate reduction (as a percent)	13.00%	13.00%
Loans in default	217	198
In offices outside North America | Installment and other
Loans receivable
Number of loans modified	61,563	59,030
Post-modification recorded investment	292	342
Deferred principal	0	0
Contingent principal forgiveness	0	0
Principal forgiveness	7	7
Average interest rate reduction (as a percent)	9.00%	7.00%
Loans in default	104	104
In offices outside North America | Commercial market loans
Loans receivable
Number of loans modified	346	413
Post-modification recorded investment	200	104
Deferred principal	0	2
Contingent principal forgiveness	0	0
Principal forgiveness	0	0
Average interest rate reduction (as a percent)	0.00%	0.00%
Loans in default	105	15

LOANS_Corporate_Loans_Details

LOANS - Corporate Loans (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Loans
Loans, net of unearned income	$644,635	$665,472
Corporate
Loans
Total loans	275,219	272,203
Net unearned income (loss)	-554	-562
Loans, net of unearned income	274,665	271,641
Corporate | Commercial and industrial
Loans
Loans, net of unearned income	110,389	113,831
Corporate | Financial institutions
Loans
Loans, net of unearned income	67,832	62,069
Corporate | Mortgage and real estate
Loans
Loans, net of unearned income	38,473	34,783
Corporate | Lease financing
Loans
Loans, net of unearned income	2,113	2,174
In U.S. offices | Corporate
Loans
Total loans	134,829	123,312
In U.S. offices | Corporate | Commercial and industrial
Loans
Total loans	35,055	32,704
In U.S. offices | Corporate | Financial institutions
Loans
Total loans	36,272	25,102
In U.S. offices | Corporate | Mortgage and real estate
Loans
Total loans	32,537	29,425
In U.S. offices | Corporate | Installment, revolving credit and other
Loans
Total loans	29,207	34,434
In U.S. offices | Corporate | Lease financing
Loans
Total loans	1,758	1,647
In offices outside the U.S. | Corporate
Loans
Total loans	140,390	148,891
In offices outside the U.S. | Corporate | Commercial and industrial
Loans
Total loans	79,239	82,663
In offices outside the U.S. | Corporate | Financial institutions
Loans
Total loans	33,269	38,372
In offices outside the U.S. | Corporate | Mortgage and real estate
Loans
Total loans	6,031	6,274
In offices outside the U.S. | Corporate | Installment, revolving credit and other
Loans
Total loans	19,259	18,714
In offices outside the U.S. | Corporate | Lease financing
Loans
Total loans	356	527
In offices outside the U.S. | Corporate | Government and official institutions
Loans
Total loans	$2,236	$2,341

LOANS_Corporate_Loan_Delinquen

LOANS - Corporate Loan Delinquency (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loans receivable
Loans, net of unearned income	$644,635,000,000	$665,472,000,000
Loans at fair value	5,901,000,000	5,029,000,000
Purchased distressed loans	421,000,000	703,000,000	537,000,000
Corporate
Loans receivable
Loans sold and/or reclassified to held-for-sale	4,800,000,000	5,800,000,000
Number of days past due, non-accrual status	90 days	90 days
Number of days past due for reversal of accrued interest and charging to earnings	90 days	90 days
Loans, equal to 30- 89 days past due and accruing	187,000,000	311,000,000
Loans, greater than or equal to 90 days past due and accruing	1,000,000	66,000,000
Loans, total Past due and accruing	188,000,000	377,000,000
Loans, total non-accrual	1,183,000,000	1,908,000,000
Loans, total current	267,385,000,000	265,167,000,000
Loans, net of unearned income	274,665,000,000	271,641,000,000
Loans at fair value	5,858,000,000	4,072,000,000
Purchased distressed loans	51,000,000	117,000,000
Loans less than this number of days past due are considered current	30 days	30 days
Corporate | Commercial and industrial
Loans receivable
Loans, equal to 30- 89 days past due and accruing	50,000,000	72,000,000
Loans, greater than or equal to 90 days past due and accruing	0	5,000,000
Loans, total Past due and accruing	50,000,000	77,000,000
Loans, total non-accrual	575,000,000	769,000,000
Loans, total current	109,764,000,000	112,985,000,000
Loans, net of unearned income	110,389,000,000	113,831,000,000
Corporate | Financial institutions
Loans receivable
Loans, equal to 30- 89 days past due and accruing	2,000,000	0
Loans, greater than or equal to 90 days past due and accruing	0	0
Loans, total Past due and accruing	2,000,000	0
Loans, total non-accrual	250,000,000	365,000,000
Loans, total current	67,580,000,000	61,704,000,000
Loans, net of unearned income	67,832,000,000	62,069,000,000
Corporate | Mortgage and real estate
Loans receivable
Loans, equal to 30- 89 days past due and accruing	86,000,000	183,000,000
Loans, greater than or equal to 90 days past due and accruing	0	58,000,000
Loans, total Past due and accruing	86,000,000	241,000,000
Loans, total non-accrual	252,000,000	515,000,000
Loans, total current	38,135,000,000	34,027,000,000
Loans, net of unearned income	38,473,000,000	34,783,000,000
Corporate | Leases
Loans receivable
Loans, equal to 30- 89 days past due and accruing	0	9,000,000
Loans, greater than or equal to 90 days past due and accruing	0	1,000,000
Loans, total Past due and accruing	0	10,000,000
Loans, total non-accrual	51,000,000	189,000,000
Loans, total current	2,062,000,000	1,975,000,000
Loans, net of unearned income	2,113,000,000	2,174,000,000
Corporate | Other
Loans receivable
Loans, equal to 30- 89 days past due and accruing	49,000,000	47,000,000
Loans, greater than or equal to 90 days past due and accruing	1,000,000	2,000,000
Loans, total Past due and accruing	50,000,000	49,000,000
Loans, total non-accrual	55,000,000	70,000,000
Loans, total current	49,844,000,000	54,476,000,000
Loans, net of unearned income	$49,949,000,000	$54,595,000,000

LOANS_Corporate_Loans_Credit_Q

LOANS - Corporate Loans Credit Quality Indicators (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Loans receivable
Loans, net of unearned income	$644,635	$665,472
Loans at fair value	5,901	5,029
Corporate
Loans receivable
Loans, net of unearned income	274,665	271,641
Loans, total non-accrual	1,183	1,908
Loans at fair value	5,858	4,072
Corporate | Commercial and industrial
Loans receivable
Loans, net of unearned income	110,389	113,831
Loans, total non-accrual	575	769
Corporate | Financial institutions
Loans receivable
Loans, net of unearned income	67,832	62,069
Loans, total non-accrual	250	365
Corporate | Mortgage and real estate
Loans receivable
Loans, net of unearned income	38,473	34,783
Loans, total non-accrual	252	515
Corporate | Lease financing
Loans receivable
Loans, net of unearned income	2,113	2,174
Loans, total non-accrual	51	189
Corporate | Other
Loans receivable
Loans, net of unearned income	49,949	54,595
Loans, total non-accrual	55	70
Corporate | Private Banking loans managed on a delinquency basis
Loans receivable
Loans, net of unearned income	18,616	17,002
Corporate | Investment Grade
Loans receivable
Loans, net of unearned income	200,987	195,207
Corporate | Investment Grade | Commercial and industrial
Loans receivable
Loans, net of unearned income	80,812	79,360
Corporate | Investment Grade | Financial institutions
Loans receivable
Loans, net of unearned income	56,154	49,699
Corporate | Investment Grade | Mortgage and real estate
Loans receivable
Loans, net of unearned income	16,068	13,178
Corporate | Investment Grade | Lease financing
Loans receivable
Loans, net of unearned income	1,669	1,600
Corporate | Investment Grade | Other
Loans receivable
Loans, net of unearned income	46,284	51,370
Corporate | Non-Investment Grade
Loans receivable
Loans, net of unearned income	49,204	55,360
Corporate | Non-Investment Grade | Commercial and industrial
Loans receivable
Loans, net of unearned income	29,003	33,702
Loans, total non-accrual	575	769
Corporate | Non-Investment Grade | Financial institutions
Loans receivable
Loans, net of unearned income	11,429	12,005
Loans, total non-accrual	250	365
Corporate | Non-Investment Grade | Mortgage and real estate
Loans receivable
Loans, net of unearned income	3,587	4,205
Loans, total non-accrual	252	515
Corporate | Non-Investment Grade | Lease financing
Loans receivable
Loans, net of unearned income	393	385
Loans, total non-accrual	51	189
Corporate | Non-Investment Grade | Other
Loans receivable
Loans, net of unearned income	3,609	3,155
Loans, total non-accrual	$55	$70

LOANS_Nonaccrual_Corporate_Loa

LOANS - Non-accrual Corporate Loans (Details) (Corporate, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing receivable impaired
Number of months in sustained period of repayment performance for cash-basis loans to return to an accrual status	6 months
Recorded investment	$1,183	$1,908
Unpaid principal balance	1,533	2,513
Related specific allowance	236	268
Average carrying value	1,344	2,183
Interest Income Recognized	47	43	98
Impaired financing receivable with specific allowance	433	925
Impaired financing receivable without specific allowance	750	983
Commercial and industrial
Financing receivable impaired
Recorded investment	575	769
Unpaid principal balance	863	1,074
Related specific allowance	155	79
Average carrying value	658	967
Interest Income Recognized	32	30
Impaired financing receivable with specific allowance	224	401
Impaired financing receivable without specific allowance	351	368
Financial institutions
Financing receivable impaired
Recorded investment	250	365
Unpaid principal balance	262	382
Related specific allowance	7	3
Average carrying value	278	378
Interest Income Recognized	4	9
Impaired financing receivable with specific allowance	37	24
Impaired financing receivable without specific allowance	213	341
Mortgage and real estate
Financing receivable impaired
Recorded investment	252	515
Unpaid principal balance	287	651
Related specific allowance	24	35
Average carrying value	263	585
Interest Income Recognized	8	3
Impaired financing receivable with specific allowance	70	253
Impaired financing receivable without specific allowance	182	262
Lease financing
Financing receivable impaired
Recorded investment	51	189
Unpaid principal balance	53	190
Related specific allowance	29	131
Average carrying value	85	189
Interest Income Recognized	0	0
Impaired financing receivable with specific allowance	47	186
Impaired financing receivable without specific allowance	4	3
Other
Financing receivable impaired
Recorded investment	55	70
Unpaid principal balance	68	216
Related specific allowance	21	20
Average carrying value	60	64
Interest Income Recognized	3	1
Impaired financing receivable with specific allowance	55	61
Impaired financing receivable without specific allowance	$0	$9

LOANS_Corporate_Troubled_Debt_

LOANS - Corporate Troubled Debt Restructurings (Details) (Corporate, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing receivable impaired
Carrying Value	$56	$169
TDRs involving changes in the amount and/or timing of principal payments	35	74
TDRs involving changes in the amount and/or timing of interest payments	18	72
TDRs involving changes in the amount and/or timing of both principal and interest payments	3	23
Period within which default occurred post-modification	1 year
Number of days past due, default status	60 days
Carrying Value	579	794
TDR in payment default	0	44
Commercial market loans
Financing receivable impaired
Number of days past due, default status	90 days
Commercial and industrial
Financing receivable impaired
Carrying Value	48	130
TDRs involving changes in the amount and/or timing of principal payments	30	55
TDRs involving changes in the amount and/or timing of interest payments	17	58
TDRs involving changes in the amount and/or timing of both principal and interest payments	1	17
Carrying Value	117	197
TDR in payment default	0	27
Financial institutions
Financing receivable impaired
Carrying Value	0	0
TDRs involving changes in the amount and/or timing of principal payments	0	0
TDRs involving changes in the amount and/or timing of interest payments	0	0
TDRs involving changes in the amount and/or timing of both principal and interest payments	0	0
Carrying Value	0	14
TDR in payment default	0	0
Mortgage and real estate
Financing receivable impaired
Carrying Value	8	34
TDRs involving changes in the amount and/or timing of principal payments	5	19
TDRs involving changes in the amount and/or timing of interest payments	1	14
TDRs involving changes in the amount and/or timing of both principal and interest payments	2	1
Carrying Value	107	161
TDR in payment default	0	17
Other
Financing receivable impaired
Carrying Value	0	5
TDRs involving changes in the amount and/or timing of principal payments	0	0
TDRs involving changes in the amount and/or timing of interest payments	0	0
TDRs involving changes in the amount and/or timing of both principal and interest payments	0	5
Carrying Value	355	422
TDR in payment default	$0	$0

LOANS_Purchased_Distressed_Loa

LOANS - Purchased Distressed Loans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Carrying Amount of Financing Receivables by Valuation Method [Line Items]
Purchased distressed loan portfolio, carrying amount	$361	$590
Purchased distressed loan portfolio, allowance	60	113
Accretable yield
Balance at beginning of period	78	22
Purchases	1	46
Disposals/payments received	-6	-5
Accretion	-24	-10
Builds (reductions) to the allowance	-36	22
Increase to expected cash flows	23	3
FX/other	-9	0
Balance at end of period	27	78
Carrying amount of loan receivable
Balance at beginning of period	703	537
Purchases	46	405
Disposals/payments received	-307	-199
Accretion	24	10
Increase to expected cash flows	0	0
FX/other	-45	-50
Balance at end of period	421	703
Allowance
Balance at beginning of period	113	98
Disposals/payments received	-15	-8
Builds (reductions) to the allowance	-27	25
FX/other	-11	-2
Balance at end of period	60	113
Level Yield Method
Carrying amount of loan receivable
Balance at beginning of period	691
Purchases	46	405
Increase to expected cash flows	46	451
Balance at end of period	413	691
Cost Recovery Method
Carrying amount of loan receivable
Balance at end of period	$8	$12

ALLOWANCE_FOR_CREDIT_LOSSES_Al

ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses Roll Forward (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for credit losses
Allowance for loan losses at beginning of period	$19,648	$25,455	$30,115
Gross credit losses	-11,108	-12,769	-17,005
Gross recoveries	2,135	2,306	2,774
NCLs	8,973	10,463	14,231
Net reserve build (releases)	-1,879	-1,961	-1,908
Net specific reserve builds (releases)	-266	-898	-1,865
Total provision for credit losses	6,828	7,604	10,458
Other, net	-1,509	-2,948	-887
Allowance for loan losses at the end of year	15,994	19,648	25,455
Allowance for credit losses on unfunded lending commitments
Allowance for credit losses on unfunded lending commitments at beginning of year	1,229	1,119	1,136
Provision (release) for unfunded lending commitments	-162	80	-16
Other, net	-4	30	-1
Allowance for credit losses on unfunded lending commitments at end of year	1,063	1,229	1,119
Total allowance for loans, leases, and unfunded lending commitments at end of period	$17,057	$20,877	$26,574

ALLOWANCE_FOR_CREDIT_LOSSES_Ad

ALLOWANCE FOR CREDIT LOSSES - Additional Information (Details) (USD $)	12 Months Ended			3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Sep. 30, 2012	Mar. 31, 2012
Allowance for loan losses disclosures
Gross credit losses	$11,108	$12,769	$17,005
Net reserve build (releases)	-1,879	-1,961	-1,908
Net specific reserve builds (releases)	-266	-898	-1,865
Reduction of allowance for loan and leases losses due to loans sold or transferred to held-for-sale or to discontinued operations	1,100	2,400
Reduction of allowance for loan and leases losses due to transfer to real estate loan portfolio	411
Increase (decrease) in allowance due to non-provision transfer of reserves associated with deferred interest to other assets		230
Reduction of allowance related to foreign currency translation	-463	-220
Greece
Allowance for loan losses disclosures
Reduction of allowance for loan and leases losses due to loans sold or transferred to held-for-sale or to discontinued operations	204	255
Spain
Allowance for loan losses disclosures
Reduction of allowance for loan and leases losses due to loans sold or transferred to held-for-sale or to discontinued operations	177
Honduras
Allowance for loan losses disclosures
Reduction of allowance for loan and leases losses due to loans sold or transferred to held-for-sale or to discontinued operations	29
EMEA
Allowance for loan losses disclosures
Reduction of allowance for loan and leases losses due to loans sold or transferred to held-for-sale or to discontinued operations	108
U.S.
Allowance for loan losses disclosures
Reduction of allowance for loan and leases losses due to loans sold or transferred to held-for-sale or to discontinued operations			875
New OCC guidance
Allowance for loan losses disclosures
Gross credit losses				-40	635
Net reserve build (releases)					-600
Anticipated forgiveness of principal in connection with National Mortgage Settlement
Allowance for loan losses disclosures
Gross credit losses						370
Net specific reserve builds (releases)						-350
Brazil Creditcard
Allowance for loan losses disclosures
Reduction of allowance for loan and leases losses due to loans sold or transferred to held-for-sale or to discontinued operations		$360

ALLOWANCE_FOR_CREDIT_LOSSES_Al1

ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses Roll Forward by Segment (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for credit losses
Allowance for loan losses at beginning of period	$19,648	$25,455	$30,115
Charge-offs	-11,108	-12,769	-17,005
Recoveries	2,135	2,306	2,774
Replenishment of net charge-offs	8,973	10,463	14,231
Net reserve build (releases)	-1,879	-1,961	-1,908
Net specific reserve releases	-266	-898	-1,865
Other	-1,509	-2,948	-887
Allowance for loan losses at the end of year	15,994	19,648	25,455
Allowance for loan losses:
Determined in accordance with ASC 450-20	11,783	14,634
Determined in accordance with ASC 310-10-35	4,152	4,901
Determined in accordance with ASC 310-30	59	113
Total allowance for loan losses	15,994	19,648	25,455
Loans, net of unearned income:
Loans collectively evaluated for impairment in accordance with ASC 450-20	617,470	633,679
Loans individually evaluated for impairment in accordance with ASC 310-10-35	20,843	26,015
Loans acquired with deteriorated credit quality in accordance with ASC 310-30	421	749
Loans held at fair value	5,901	5,029
Loans, net of unearned income	644,635	665,472
Corporate
Allowance for credit losses
Allowance for loan losses at beginning of period	2,584	2,776	2,879
Charge-offs	-427	-369	-640
Recoveries	139	168	417
Replenishment of net charge-offs	288	201	223
Net reserve build (releases)	-133	-199	2
Net specific reserve releases	-20	-1	-138
Other	-42	8	33
Allowance for loan losses at the end of year	2,389	2,584	2,776
Allowance for loan losses:
Determined in accordance with ASC 450-20	2,110	2,232
Determined in accordance with ASC 310-10-35	235	268
Determined in accordance with ASC 310-30	44	84
Total allowance for loan losses	2,389	2,584	2,776
Loans, net of unearned income:
Loans collectively evaluated for impairment in accordance with ASC 450-20	267,271	265,230
Loans individually evaluated for impairment in accordance with ASC 310-10-35	1,485	2,222
Loans acquired with deteriorated credit quality in accordance with ASC 310-30	51	117
Loans held at fair value	5,858	4,072
Loans, net of unearned income	274,665	271,641
Consumer
Allowance for credit losses
Allowance for loan losses at beginning of period	17,064	22,679	27,236
Charge-offs	-10,681	-12,400	-16,365
Recoveries	1,996	2,138	2,357
Replenishment of net charge-offs	8,685	10,262	14,008
Net reserve build (releases)	-1,746	-1,762	-1,910
Net specific reserve releases	-246	-897	-1,727
Other	-1,467	-2,956	-920
Allowance for loan losses at the end of year	13,605	17,064	22,679
Allowance for loan losses:
Determined in accordance with ASC 450-20	9,673	12,402
Determined in accordance with ASC 310-10-35	3,917	4,633
Determined in accordance with ASC 310-30	15	29
Total allowance for loan losses	13,605	17,064	22,679
Loans, net of unearned income:
Loans collectively evaluated for impairment in accordance with ASC 450-20	350,199	368,449
Loans individually evaluated for impairment in accordance with ASC 310-10-35	19,358	23,793
Loans acquired with deteriorated credit quality in accordance with ASC 310-30	370	632
Loans held at fair value	43	957
Loans, net of unearned income	$369,970	$393,831

GOODWILL_AND_INTANGIBLE_ASSETS2

GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Goodwill
Balance of goodwill at beginning of period	$25,009	$25,673
Foreign exchange translation	-1,214	-577
Smaller acquisitions/divestitures, purchase accounting adjustments and other	-203	-25
Sale of Brazil Credicard		-62
Balance of goodwill at end of period	$23,592	$25,009

GOODWILL_AND_INTANGIBLE_ASSETS3

GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill by Segment (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Goodwill
Balance of goodwill at beginning of period	$25,009	$25,673
Disposals	-203	-82
Other	-1,214	-582
Balance of goodwill at end of period	23,592	25,009
Global Consumer Banking
Goodwill
Balance of goodwill at beginning of period	13,985	14,539
Disposals	-86	-82
Other	-505	-472
Balance of goodwill at end of period	13,394	13,985
Institutional Clients Group
Goodwill
Balance of goodwill at beginning of period	10,868	10,981
Disposals	-1	0
Other	-711	-113
Balance of goodwill at end of period	10,156	10,868
Citi Holdings
Goodwill
Balance of goodwill at beginning of period	156	153
Disposals	-116	0
Other	2	3
Balance of goodwill at end of period	$42	$156

GOODWILL_AND_INTANGIBLE_ASSETS4

GOODWILL AND INTANGIBLE ASSETS - Goodwill by Reporting Units (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 22, 2014
Goodwill:
Impairments	$0	$0	$0
Goodwill	23,592,000,000	25,009,000,000	25,673,000,000
Citi Holdings
Goodwill:
Goodwill	42,000,000	156,000,000	153,000,000
North America Global Consumer Banking
Goodwill:
Fair Value as a % of allocated book value	260.00%
Goodwill	6,756,000,000
EMEA Global Consumer Banking
Goodwill:
Fair Value as a % of allocated book value	178.00%
Goodwill	332,000,000
Asia Global Consumer Banking
Goodwill:
Fair Value as a % of allocated book value	264.00%
Goodwill	4,704,000,000
Latin America Global Consumer Banking
Goodwill:
Fair Value as a % of allocated book value	214.00%
Goodwill	1,602,000,000
Banking
Goodwill:
Fair Value as a % of allocated book value	404.00%
Goodwill	3,481,000,000
Markets and Securities Services
Goodwill:
Fair Value as a % of allocated book value	200.00%
Goodwill	6,675,000,000
Latin America Retirement Services
Goodwill:
Fair Value as a % of allocated book value	193.00%
Goodwill	$42,000,000
Spain Consumer Business | Citi Holdings
Goodwill:
Goodwill, Percentage Allocated To Sale				100.00%

GOODWILL_AND_INTANGIBLE_ASSETS5

GOODWILL AND INTANGIBLE ASSETS - Components of Intangible Assets (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite and Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount of Intangible assets (excluding MSRs)	$15,098	$15,116
Accumulated amortization of Intangible assets (excluding MSRs)	10,532	10,060
Net carrying amount of Intangible assets (excluding MSRs)	4,566	5,056
Gross carrying amount, Mortgage servicing rights (MSRs)	1,845	2,718
Mortgage servicing rights (MSRs)	1,845	2,718
Gross carrying amount of Intangible assets	16,943	17,834
Accumulated amortization of Intangible assets	10,532	10,060
Net carrying amount of Intangible assets, balance at end of period	6,411	7,774
Intangible assets amortization expense	756	808	856
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2015	659
2016	634
2017	938
2018	411
2019	368
Indefinite-lived intangible assets
Finite and Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount of Intangible assets (excluding MSRs)	290	323
Accumulated amortization of Intangible assets (excluding MSRs)	0	0
Net carrying amount of Intangible assets (excluding MSRs)	290	323
Purchased credit card relationships
Finite and Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount of Intangible assets (excluding MSRs)	7,626	7,552
Accumulated amortization of Intangible assets (excluding MSRs)	6,294	6,006
Net carrying amount of Intangible assets (excluding MSRs)	1,332	1,546
Core deposit intangibles
Finite and Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount of Intangible assets (excluding MSRs)	1,153	1,255
Accumulated amortization of Intangible assets (excluding MSRs)	1,021	1,052
Net carrying amount of Intangible assets (excluding MSRs)	132	203
Other customer relationships
Finite and Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount of Intangible assets (excluding MSRs)	579	675
Accumulated amortization of Intangible assets (excluding MSRs)	331	389
Net carrying amount of Intangible assets (excluding MSRs)	248	286
Present value of future profits
Finite and Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount of Intangible assets (excluding MSRs)	233	238
Accumulated amortization of Intangible assets (excluding MSRs)	154	146
Net carrying amount of Intangible assets (excluding MSRs)	79	92
Other
Finite and Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount of Intangible assets (excluding MSRs)	5,217	5,073
Accumulated amortization of Intangible assets (excluding MSRs)	2,732	2,467
Net carrying amount of Intangible assets (excluding MSRs)	$2,485	$2,606

GOODWILL_AND_INTANGIBLE_ASSETS6

GOODWILL AND INTANGIBLE ASSETS - Changes in Intangible Assets (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Net carrying amount of Intangible assets (excluding MSRs), beginning balance	$5,056
Acquisitions/ divestitures	273
Amortization	-756
Impairments	-2
FX and other	-5
Net carrying amount of Intangible assets (excluding MSRs), ending balance	4,566
Mortgage servicing rights (MSRs)	1,845	2,718
Net carrying amount of Intangible assets, balance at end of period	6,411	7,774
Purchased credit card relationships
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Net carrying amount of Intangible assets (excluding MSRs), beginning balance	1,546
Acquisitions/ divestitures	110
Amortization	-324
FX and other	0
Net carrying amount of Intangible assets (excluding MSRs), ending balance	1,332
Core deposit intangibles
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Net carrying amount of Intangible assets (excluding MSRs), beginning balance	203
Acquisitions/ divestitures	-6
Amortization	-59
FX and other	-6
Net carrying amount of Intangible assets (excluding MSRs), ending balance	132
Other customer relationships
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Net carrying amount of Intangible assets (excluding MSRs), beginning balance	286
Acquisitions/ divestitures	14
Amortization	-28
FX and other	-24
Net carrying amount of Intangible assets (excluding MSRs), ending balance	248
Present value of future profits
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Net carrying amount of Intangible assets (excluding MSRs), beginning balance	92
Amortization	-12
FX and other	-1
Net carrying amount of Intangible assets (excluding MSRs), ending balance	79
Other
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Net carrying amount of Intangible assets (excluding MSRs), beginning balance	2,606
Acquisitions/ divestitures	157
Amortization	-333
Impairments	-2
FX and other	57
Net carrying amount of Intangible assets (excluding MSRs), ending balance	2,485
Indefinite-lived intangible assets
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Net carrying amount of Intangible assets (excluding MSRs), beginning balance	323
Acquisitions/ divestitures	-2
FX and other	-31
Net carrying amount of Intangible assets (excluding MSRs), ending balance	$290

DEBT_ShortTerm_Borrowings_Deta

DEBT - Short-Term Borrowings (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Short-Term Borrowings:
Commercial paper	$16,155,000,000	$17,878,000,000
Other borrowings	42,180,000,000	41,066,000,000
Total short-term borrowings	58,335,000,000	58,944,000,000
Collateralized short-term advances from Federal Home Loan Bank	11,200,000,000	11,200,000,000
Commercial paper
Short-Term Borrowings:
Commercial paper, weighted average coupon	0.23%	0.26%
Other borrowings
Short-Term Borrowings:
Commercial paper, weighted average coupon	0.53%	0.87%
Significant Citibank Entities
Short-Term Borrowings:
Commercial paper	16,085,000,000	17,677,000,000
Significant Citibank Entities | Commercial paper
Short-Term Borrowings:
Commercial paper, weighted average coupon	0.22%	0.25%
Citigroup Inc.
Short-Term Borrowings:
Commercial paper	70,000,000	201,000,000
Total short-term borrowings	$1,075,000,000	$382,000,000
Citigroup Inc. | Commercial paper
Short-Term Borrowings:
Commercial paper, weighted average coupon	0.95%	1.11%

DEBT_LongTerm_Debt_Details

DEBT - Long-Term Debt (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Weighted average interest rate	3.34%
Long-term debt	$223,080,000,000	$221,116,000,000
Weighted average interest rate including effects of derivative contracts	2.48%
Senior debt
Debt Instrument [Line Items]
Long-term debt	195,868,000,000	188,727,000,000
Subordinated debt
Debt Instrument [Line Items]
Long-term debt	25,487,000,000	28,481,000,000
Trust preferred securities
Debt Instrument [Line Items]
Long-term debt	1,725,000,000	3,908,000,000
Citigroup Inc.
Debt Instrument [Line Items]
Long-term debt	149,512,000,000	156,804,000,000
Citigroup Inc. | Senior debt
Debt Instrument [Line Items]
Weighted average interest rate	3.85%
Long-term debt	122,323,000,000	124,857,000,000
Citigroup Inc. | Subordinated debt
Debt Instrument [Line Items]
Weighted average interest rate	4.48%
Long-term debt	25,464,000,000	28,039,000,000
Citigroup Inc. | Trust preferred securities
Debt Instrument [Line Items]
Weighted average interest rate	6.90%
Long-term debt	1,725,000,000	3,908,000,000
Bank
Debt Instrument [Line Items]
Long-term debt	65,146,000,000
Bank | Senior debt
Debt Instrument [Line Items]
Weighted average interest rate	1.74%
Long-term debt	65,146,000,000	56,039,000,000
Collateralized long-term advances from Federal Home Loan Bank	19,800,000,000	14,000,000,000
Bank | Subordinated debt
Debt Instrument [Line Items]
Weighted average interest rate	0.00%
Long-term debt	0	418,000,000
Broker-dealer
Debt Instrument [Line Items]
Long-term debt	8,422,000,000
Broker-dealer | Senior debt
Debt Instrument [Line Items]
Weighted average interest rate	4.06%
Long-term debt	8,399,000,000	7,831,000,000
Broker-dealer | Subordinated debt
Debt Instrument [Line Items]
Weighted average interest rate	2.07%
Long-term debt	23,000,000	24,000,000
Citigroup Funding Inc. (CFI)
Debt Instrument [Line Items]
Carrying value of Principal-Protected Trust Securities	$0	$87,000,000

DEBT_Maturities_of_LongTerm_De

DEBT - Maturities of Long-Term Debt (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Long-term Debt, Fiscal Year Maturity [Abstract]
2015	$31,070
2016	42,128
2017	40,249
2018	22,017
2019	22,117
Thereafter	65,499
Long-term Debt	223,080	221,116
Bank
Long-term Debt, Fiscal Year Maturity [Abstract]
2015	14,459
2016	21,248
2017	14,190
2018	9,128
2019	2,146
Thereafter	3,975
Long-term Debt	65,146
Broker-dealer
Long-term Debt, Fiscal Year Maturity [Abstract]
2015	760
2016	708
2017	210
2018	141
2019	1,725
Thereafter	4,878
Long-term Debt	8,422
Citigroup Inc.
Long-term Debt, Fiscal Year Maturity [Abstract]
2015	15,851
2016	20,172
2017	25,849
2018	12,748
2019	18,246
Thereafter	56,646
Long-term Debt	$149,512	$156,804

DEBT_Trust_Preferred_Securitie

DEBT - Trust Preferred Securities (Details) (USD $)	Dec. 31, 2014
In Millions, except Share data, unless otherwise specified
Trust Preferred Securities
Liquidation value	$2,596
Junior subordinated debentures owned by the Trust, amount	2,602
Citigroup Capital III
Trust Preferred Securities
Securities issued (in shares)	194,053
Liquidation value	194
Coupon rate (as a percent)	7.63%
Common shares issued to parent (in shares)	6,003
Junior subordinated debentures owned by the Trust, amount	200
Citigroup Capital XIII
Trust Preferred Securities
Securities issued (in shares)	89,840,000
Liquidation value	2,246
Coupon rate (as a percent)	7.88%
Common shares issued to parent (in shares)	1,000
Junior subordinated debentures owned by the Trust, amount	2,246
Citigroup Capital XVIII
Trust Preferred Securities
Securities issued (in shares)	99,901
Liquidation value	156
Coupon rate (as a percent)	6.83%
Common shares issued to parent (in shares)	50
Junior subordinated debentures owned by the Trust, amount	$156

REGULATORY_CAPITAL_AND_CITIGRO2

REGULATORY CAPITAL AND CITIGROUP, INC. PARENT COMPANY INFORMATION - Regulatory Capital Compliance (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Required minimum, Tier 1 common capital (as a percent)	4.00%
Required minimum, Tier 1 capital ratio (as a percent)	5.50%
Well capitalized minimum, Tier 1 capital ratio (as a percent)	6.00%
Required minimum, Total capital ratio (as a percent)	8.00%
Well capitalized minimum, Total capital ratio (as a percent)	10.00%
Required minimum, Leverage ratio (as a percent)	4.00%
Well capitalized minimum, Leverage ratio (as a percent)	5.00%
Dividends received from Citibank N.A.	$8,900,000,000	$12,200,000,000
Citigroup Inc.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Common	166,984,000,000
Tier 1 Capital	166,984,000,000
Total Capital	185,280,000,000
Risk-weighted assets	1,275,012,000,000
Quarterly adjusted average total assets	1,849,297,000,000
Tier one common capital ratio (as a percent)	13.10%
Tier 1 Capital ratio (as a percent)	13.10%
Total Capital ratio (as a percent)	14.53%
Leverage ratio (as a percent)	9.03%
Citibank, N.A.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Common	129,135,000,000
Tier 1 Capital	129,135,000,000
Total Capital	140,119,000,000
Risk-weighted assets	946,333,000,000
Quarterly adjusted average total assets	1,367,444,000,000
Tier one common capital ratio (as a percent)	13.65%
Tier 1 Capital ratio (as a percent)	13.65%
Total Capital ratio (as a percent)	14.81%
Leverage ratio (as a percent)	9.44%
Citigroup Global Markets Inc.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Net capital or equivalent	5,521,000,000
Excess over minimum requirement	4,376,000,000
Citigroup Global Markets Limited
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Net capital or equivalent	7,162,000,000
Excess over minimum requirement	$2,482,000,000

REGULATORY_CAPITAL_AND_CITIGRO3

REGULATORY CAPITAL AND CITIGROUP, INC. PARENT COMPANY INFORMATION - Condensed Income Statement (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Revenues
Interest revenue									$61,683	[1]	$62,970	[1]	$67,298	[1]
Interest expense									13,690	[1]	16,177	[1]	20,612	[1]
Net interest revenue									47,993	[1]	46,793	[1]	46,686	[1]
Non-interest revenue									28,889		29,626		22,504
Total revenues, net of interest expense	17,812	19,604	19,342	20,124	17,779	17,904	20,488	20,248	76,882	[1]	76,419	[1]	69,190
Operating expenses	14,426	12,955	15,521	12,149	12,293	11,679	12,149	12,288	55,051	[1]	48,408	[1]	50,036	[1]
Income from continuing operations before income taxes	1,373	4,899	2,091	6,001	3,414	4,266	6,315	5,501	14,364		19,497		7,825
Provision for income taxes	991	1,985	1,838	2,050	1,090	1,080	2,127	1,570	6,864		5,867		7
Citigroup’s net income	350	2,839	181	3,943	2,455	3,227	4,182	3,808	7,313		13,673		7,541
Citigroup’s other comprehensive income (loss)
Citigroup’s net income	350	2,839	181	3,943	2,455	3,227	4,182	3,808	7,313		13,673		7,541
Other comprehensive income (loss)									-4,083		-2,237		892
Citigroup’s comprehensive income									3,124		11,419		8,523
Citigroup Inc.
Revenues
Interest revenue									3,121		3,234		3,384
Interest expense									4,437		5,559		6,573
Net interest revenue									-1,316		-2,325		-3,189
Dividends from subsidiaries									8,900		13,044		20,780
Non-interest revenue									247		139		613
Total revenues, net of interest expense									7,831		10,858		18,204
Operating expenses									1,980		851		1,497
Income from continuing operations before income taxes									5,851		10,007		16,707
Provision for income taxes									-643		-1,637		-2,062
Equity in undistributed income (loss) of subsidiaries									819		2,029		-11,228
Citigroup’s net income									7,313		13,673		7,541
Citigroup’s other comprehensive income (loss)
Citigroup’s net income									7,313		13,673		7,541
Other comprehensive income (loss)									-4,083		-2,237		892
Citigroup’s comprehensive income									$3,230		$11,436		$8,433
[1]	Certain prior-period revenue and expense lines and totals were reclassified to conform to the current period’s presentation. See Note 3 to the Consolidated Financial Statements.

REGULATORY_CAPITAL_AND_CITIGRO4

REGULATORY CAPITAL AND CITIGROUP, INC. PARENT COMPANY INFORMATION - Condensed Balance Sheets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and due from banks	$32,108,000,000	$29,885,000,000	$36,453,000,000	$28,701,000,000
Trading account assets	296,786,000,000	285,928,000,000
Other assets	122,471,000,000	125,266,000,000
Total assets	1,842,530,000,000	1,880,382,000,000
Liabilities
Trading account liabilities	139,036,000,000	108,762,000,000
Short-term borrowings	58,335,000,000	58,944,000,000
Long-term debt	223,080,000,000	221,116,000,000
Other liabilities	85,084,000,000	59,935,000,000
Total liabilities	1,630,485,000,000	1,674,249,000,000
Total Citigroup stockholders’ equity	210,534,000,000	204,339,000,000
Total liabilities and equity	1,842,530,000,000	1,880,382,000,000
Citigroup Inc.
Assets
Cash and due from banks	125,000,000	233,000,000	153,000,000	3,000,000
Trading account assets	604,000,000	184,000,000
Investments	830,000,000	1,032,000,000
Advances to Affiliate	77,951,000,000	83,110,000,000
Investments in Subsidiaries	211,353,000,000	203,739,000,000
Other assets	110,908,000,000	106,170,000,000
Total assets	401,771,000,000	394,468,000,000
Liabilities
Federal funds purchased and securities loaned or sold under agreements to repurchase	185,000,000	185,000,000
Trading account liabilities	762,000,000	165,000,000
Short-term borrowings	1,075,000,000	382,000,000
Long-term debt	149,512,000,000	156,804,000,000
Advances from subsidiaries other than banks	27,430,000,000	24,181,000,000
Other liabilities	12,273,000,000	8,412,000,000
Total liabilities	191,237,000,000	190,129,000,000
Total Citigroup stockholders’ equity	210,534,000,000	204,339,000,000
Total liabilities and equity	401,771,000,000	394,468,000,000
Citibank, N.A.
Assets
Other assets	42,700,000,000	43,300,000,000
Liabilities
Other assets which have a remaining term of less than 30 days	$33,900,000,000	$33,600,000,000

REGULATORY_CAPITAL_AND_CITIGRO5

REGULATORY CAPITAL AND CITIGROUP, INC. PARENT COMPANY INFORMATION - Condensed Cash Flow Statements (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in ) operating activities of continuing operations	$45,434	$63,244	($10,362)
Cash flows from investing activities of continuing operations
Purchases of investments	-258,992	-220,823	-256,907
Proceeds from sales of investments	135,824	131,100	143,853
Proceeds from maturities of investments	94,117	84,831	102,020
Net cash provided by (used in) investing activities of continuing operations	29,491	-91,338	30,335
Cash flows from financing activities of continuing operations
Dividends paid	-633	-314	-143
Issuance of preferred stock	3,699	4,192	2,250
Net cash provided by (used in) financing activities of continuing operations	-70,270	23,094	-12,501
Change in cash and due from banks	2,223	-6,568	7,752
Cash and due from banks at beginning of period	29,885	36,453	28,701
Cash and due from banks at end of period	32,108	29,885	36,453
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the year for income taxes	4,632	4,495	3,900
Cash paid during the year for interest	12,868	14,383	19,739
Citigroup Inc.
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in ) operating activities of continuing operations	5,940	-7,881	1,598
Cash flows from investing activities of continuing operations
Purchases of investments	0	0	-5,701
Proceeds from sales of investments	41	385	37,056
Proceeds from maturities of investments	155	233	4,286
Changes in investments and advances—intercompany	-7,986	7,226	-397
Other investing activities	5	4	994
Net cash provided by (used in) investing activities of continuing operations	-7,785	7,848	36,238
Cash flows from financing activities of continuing operations
Dividends paid	-633	-314	-143
Issuance of preferred stock	3,699	4,192	2,250
Proceeds (repayments) from issuance of long-term debt—third-party, net	-3,636	-13,426	-33,434
Net change in short-term borrowings and other advances—intercompany	3,297	11,402	-6,160
Other financing activities	-990	-1,741	-199
Net cash provided by (used in) financing activities of continuing operations	1,737	113	-37,686
Change in cash and due from banks	-108	80	150
Cash and due from banks at beginning of period	233	153	3
Cash and due from banks at end of period	125	233	153
Supplemental disclosure of cash flow information for continuing operations
Cash paid during the year for income taxes	235	-71	78
Cash paid during the year for interest	$5,632	$6,514	$7,883

CHANGES_IN_ACCUMULATED_OTHER_C2

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Change in Each Compenant of AOCI (Details) (USD $)	12 Months Ended			0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 20, 2013	Dec. 31, 2011
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax					($17,788)
End-of-period balance, net of tax	-16,896	-23,216	-19,133		-17,788
Housing Development Finance Corporation Ltd.
Change in accumulated other comprehensive income (loss)
After tax realized gains from sales of minority investments	672
Shanghai Pudong Development Bank
Change in accumulated other comprehensive income (loss)
After tax realized gains from sales of minority investments	421
Akbank
Change in accumulated other comprehensive income (loss)
Impairment charge due to foreign currency exchange and translation related to the investment, after-tax	667
Net unrealized gains (losses) on investment securities
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax	-35	-1,640	597
Other comprehensive income (losses) before reclassifications		1,790	-1,962
Increase (decrease) due to amounts reclassified from AOCI		-93	-275
Change, net of taxes	632	1,697	-2,237
End-of-period balance, net of tax	597	57	-1,640
Cash flow hedges
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax	-2,820	-1,245	-2,293
Other comprehensive income (losses) before reclassifications		85	512
Increase (decrease) due to amounts reclassified from AOCI		251	536
Change, net of taxes	527	336	1,048
End-of-period balance, net of tax	-2,293	-909	-1,245
Benefit plans
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax	-4,282	-3,989	-5,270
Other comprehensive income (losses) before reclassifications		-1,346	1,098
Increase (decrease) due to amounts reclassified from AOCI		176	183
Change, net of taxes	-988	-1,170	1,281
End-of-period balance, net of tax	-5,270	-5,159	-3,989
Foreign currency translation adjustment
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax	-10,651	-12,259	-9,930
Other comprehensive income (losses) before reclassifications		-4,946	-2,534	-205
Increase (decrease) due to amounts reclassified from AOCI		0	205
Change, net of taxes	721	-4,946	-2,329
End-of-period balance, net of tax	-9,930	-17,205	-12,259
Reclassification for allocation between net unrealized gains (losses) on investment securities to CTA, before tax		137
Reclassification for allocation between net unrealized gains (losses) on investment securities to CTA, net of tax		84
Other comprehensive income (loss), before tax				314
Accumulated other comprehensive income (loss)
Change in accumulated other comprehensive income (loss)
Beginning-of-period balance, net of tax	-17,788	-19,133	-16,896
Other comprehensive income (losses) before reclassifications		-4,417	-2,886
Increase (decrease) due to amounts reclassified from AOCI		334	649
Change, net of taxes	892	-4,083	-2,237
End-of-period balance, net of tax	($16,896)	($23,216)	($19,133)

CHANGES_IN_ACCUMULATED_OTHER_C3

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Pre-Tax and After-Tax (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Change in accumulated other comprehensive income (loss), pretax
Balance at the beginning of the period, pretax	($27,596)		($25,334)		($25,807)
Change in net unrealized gains (losses) on investment securities, pretax	2,704		-3,537		1,001
Cash flow hedges, pretax	543		1,673		838
Benefit plans, pretax	-1,830		1,979		-1,378
Foreign currency translation adjustment, pretax	-4,881		-2,377		12
Change, pretax	-3,464		-2,262		473
Balance at the end of the period, pretax	-31,060		-27,596		-25,334
Change in accumulated other comprehensive income (loss), tax effect
Balance at the beginning of the period, tax effect	8,463		8,438		8,019
Change in net unrealized gains (losses) on investment securities, tax effect	-1,007		1,300		-369
Cash flow hedges, tax effect	-207		-625		-311
Benefit plans	660		-698		390
Foreign currency translation adjustment, tax effect	-65		48		709
Change, tax effect	-619		25		419
Balance at the end of the period, tax effect	7,844		8,463		8,438
Change in accumulated other comprehensive income (loss), after-tax
Beginning-of-period balance, net of tax	-19,133		-16,896		-17,788
Change in net unrealized gains (losses) on investment securities, after-tax	1,697		-2,237		632
Cash flow hedges, after-tax	336		1,048		527
Change, net of tax	-1,170	[1]	1,281	[1]	-988	[1]
Foreign currency translation adjustment, after-tax	-4,946		-2,329		721
Citigroup’s total other comprehensive income (loss)	-4,083		-2,237		892
End-of-period balance, net of tax	($23,216)		($19,133)		($16,896)
[1]	Reflects adjustments based on the actuarial valuations of the Company’s significant pension and postretirement plans, including changes in the mortality assumptions at December 31, 2014, and amortization of amounts previously recognized in Accumulated other comprehensive income (loss). See Note 8 to the Consolidated Financial Statements.

CHANGES_IN_ACCUMULATED_OTHER_C4

CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassification out of AOCI (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Realized (gains) losses on sales of investments									($570)	($748)	($3,251)
Income from continuing operations before income taxes	-1,373	-4,899	-2,091	-6,001	-3,414	-4,266	-6,315	-5,501	-14,364	-19,497	-7,825
Tax effect	991	1,985	1,838	2,050	1,090	1,080	2,127	1,570	6,864	5,867	7
Income from continuing operations	-382	-2,914	-253	-3,951	-2,324	-3,186	-4,188	-3,931	-7,500	-13,630	-7,818
(Gain) loss reclassified from AOCI
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Income from continuing operations before income taxes									542	1,071
Tax effect									-208	-422
Income from continuing operations									334	649
(Gain) loss reclassified from AOCI | Realized gains (losses) on investment securities
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Realized (gains) losses on sales of investments									-570	-748
OTTI gross impairment losses									424	334
Income from continuing operations before income taxes									-146	-414
Tax effect									53	139
Income from continuing operations									-93	-275
(Gain) loss reclassified from AOCI | Cash flow hedges
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Income from continuing operations before income taxes									409	876
Tax effect									-158	-340
Income from continuing operations									251	536
(Gain) loss reclassified from AOCI | Cash flow hedges | Interest rate
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Income from continuing operations before income taxes									260	700
(Gain) loss reclassified from AOCI | Cash flow hedges | Foreign exchange contracts
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Income from continuing operations before income taxes									149	176
(Gain) loss reclassified from AOCI | Pension liability adjustments
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Amortization of unrecognized prior service cost (benefit)									-40	0
Amortization of unrecognized Net actuarial loss									243	271
Curtailment/settlement impact									76	44
Cumulative effect of change in accounting policy										-20
Income from continuing operations before income taxes									279	295
Tax effect									-103	-112
Income from continuing operations									176	183
(Gain) loss reclassified from AOCI | Foreign currency translation adjustment
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)
Income from continuing operations									$0	($205)

PREFERRED_STOCK_Details

PREFERRED STOCK (Details) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2015	Jan. 25, 2008	Dec. 31, 2013	Apr. 28, 2008	Oct. 29, 2012	Dec. 13, 2012	Mar. 26, 2013	Apr. 30, 2013	Sep. 19, 2013	Oct. 31, 2013	Feb. 12, 2014	Apr. 30, 2014	Oct. 29, 2014
Preferred stock
Carrying value	$10,468			$6,738
Distribution of preferred dividends	511
Forecast
Preferred stock
Distribution of preferred dividends		656
Series AA
Preferred stock
Dividend rate (as a percent)	8.13%			8.13%
Redemption price per depositary share/ preference share (in dollars per share)	$25			$25
Number of depositary shares (in shares)	3,870,330			3,870,330
Carrying value	97			97
Depositary shares, interest in corresponding series of preferred stock			0.001
Series E
Preferred stock
Dividend rate (as a percent)	8.40%			8.40%
Redemption price per depositary share/ preference share (in dollars per share)	$1,000			$1,000
Number of depositary shares (in shares)	121,254			121,254
Carrying value	121			121
Depositary shares, interest in corresponding series of preferred stock					0.04
Series A
Preferred stock
Dividend rate (as a percent)	5.95%			5.95%
Redemption price per depositary share/ preference share (in dollars per share)	$1,000			$1,000
Number of depositary shares (in shares)	1,500,000			1,500,000
Carrying value	1,500			1,500
Depositary shares, interest in corresponding series of preferred stock						0.04
Series B
Preferred stock
Dividend rate (as a percent)	5.90%			5.90%
Redemption price per depositary share/ preference share (in dollars per share)	$1,000			$1,000
Number of depositary shares (in shares)	750,000			750,000
Carrying value	750			750
Depositary shares, interest in corresponding series of preferred stock							0.04
Series C
Preferred stock
Dividend rate (as a percent)	5.80%			5.80%
Redemption price per depositary share/ preference share (in dollars per share)	$25			$25
Number of depositary shares (in shares)	23,000,000			23,000,000
Carrying value	575			575
Depositary shares, interest in corresponding series of preferred stock								0.001
Series D
Preferred stock
Dividend rate (as a percent)	5.35%			5.35%
Redemption price per depositary share/ preference share (in dollars per share)	$1,000			$1,000
Number of depositary shares (in shares)	1,250,000			1,250,000
Carrying value	1,250			1,250
Depositary shares, interest in corresponding series of preferred stock									0.04
Series J
Preferred stock
Dividend rate (as a percent)	7.13%			7.13%
Redemption price per depositary share/ preference share (in dollars per share)	$25			$25
Number of depositary shares (in shares)	38,000,000			38,000,000
Carrying value	950			950
Depositary shares, interest in corresponding series of preferred stock										0.001
Series K
Preferred stock
Dividend rate (as a percent)	6.88%			6.88%
Redemption price per depositary share/ preference share (in dollars per share)	$25			$25
Number of depositary shares (in shares)	59,800,000			59,800,000
Carrying value	1,495			1,495
Depositary shares, interest in corresponding series of preferred stock											0.001
Series L
Preferred stock
Dividend rate (as a percent)	6.88%			6.88%
Redemption price per depositary share/ preference share (in dollars per share)	$25			$25
Number of depositary shares (in shares)	19,200,000			19,200,000
Carrying value	480			0
Depositary shares, interest in corresponding series of preferred stock												0.001
Series M
Preferred stock
Dividend rate (as a percent)	6.30%			6.30%
Redemption price per depositary share/ preference share (in dollars per share)	$1,000			$1,000
Number of depositary shares (in shares)	1,750,000			1,750,000
Carrying value	1,750			0
Depositary shares, interest in corresponding series of preferred stock													0.04
Series N
Preferred stock
Dividend rate (as a percent)	5.80%			5.80%
Redemption price per depositary share/ preference share (in dollars per share)	$1,000			$1,000
Number of depositary shares (in shares)	1,500,000			1,500,000
Carrying value	$1,500			$0
Depositary shares, interest in corresponding series of preferred stock														0.04

SECURITIZATIONS_AND_VARIABLE_I2

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Schedule of Variable Interest Entities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Variable Interest Entity
Total involvement with SPE assets	$536,710,000,000	$581,199,000,000
Consolidated VIE / SPE assets	102,790,000,000	105,433,000,000
Significant unconsolidated VIE assets	433,920,000,000	475,766,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	32,909,000,000	27,680,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	4,102,000,000	3,379,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	8,313,000,000	7,356,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	613,000,000	586,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	45,937,000,000	39,001,000,000
Citicorp
Variable Interest Entity
Total involvement with SPE assets	483,934,000,000	467,915,000,000
Consolidated VIE / SPE assets	100,050,000,000	96,333,000,000
Significant unconsolidated VIE assets	383,884,000,000	371,582,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	32,475,000,000	25,833,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	3,923,000,000	3,111,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	7,323,000,000	6,159,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	435,000,000	309,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	44,156,000,000	35,412,000,000
Citicorp | Credit card securitizations
Variable Interest Entity
Total involvement with SPE assets	60,211,000,000	52,229,000,000
Consolidated VIE / SPE assets	60,211,000,000	52,229,000,000
Significant unconsolidated VIE assets	0	0
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	0	0
Citicorp | Mortgage-backed securities - U.S. agency-sponsored
Variable Interest Entity
Total involvement with SPE assets	236,771,000,000	239,204,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	236,771,000,000	239,204,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	5,063,000,000	3,583,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	19,000,000	36,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	5,082,000,000	3,619,000,000
Citicorp | Mortgage securitizations - Non-agency-sponsored
Variable Interest Entity
Total involvement with SPE assets	8,071,000,000	7,711,000,000
Consolidated VIE / SPE assets	1,239,000,000	598,000,000
Significant unconsolidated VIE assets	6,832,000,000	7,113,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	560,000,000	583,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	560,000,000	583,000,000
Citicorp | Citi-administered asset-backed commercial paper conduits (ABCP)
Variable Interest Entity
Total involvement with SPE assets	29,181,000,000	31,759,000,000
Consolidated VIE / SPE assets	29,181,000,000	31,759,000,000
Significant unconsolidated VIE assets	0	0
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	0	0
Citicorp | Collateralized debt obligations (CDOs)
Variable Interest Entity
Total involvement with SPE assets	3,382,000,000	4,204,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	3,382,000,000	4,204,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	45,000,000	34,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	45,000,000	34,000,000
Citicorp | Collateralized loan obligations (CLOs)
Variable Interest Entity
Total involvement with SPE assets	13,099,000,000	16,883,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	13,099,000,000	16,883,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	1,692,000,000	1,938,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	1,692,000,000	1,938,000,000
Citicorp | Asset-based financing
Variable Interest Entity
Total involvement with SPE assets	62,577,000,000	45,884,000,000
Consolidated VIE / SPE assets	1,149,000,000	971,000,000
Significant unconsolidated VIE assets	61,428,000,000	44,913,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	22,891,000,000	17,341,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	63,000,000	74,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	2,185,000,000	1,004,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	333,000,000	195,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	25,472,000,000	18,614,000,000
Citicorp | Municipal securities tender option bond trusts (TOBs)
Variable Interest Entity
Total involvement with SPE assets	12,280,000,000	12,716,000,000
Consolidated VIE / SPE assets	6,671,000,000	7,039,000,000
Significant unconsolidated VIE assets	5,609,000,000	5,677,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	3,000,000	29,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	3,670,000,000	3,881,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	3,673,000,000	3,910,000,000
Citicorp | Municipal investments
Variable Interest Entity
Total involvement with SPE assets	16,825,000,000	15,962,000,000
Consolidated VIE / SPE assets	70,000,000	223,000,000
Significant unconsolidated VIE assets	16,755,000,000	15,739,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	2,012,000,000	1,846,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	2,021,000,000	2,073,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	1,321,000,000	1,173,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	5,354,000,000	5,092,000,000
Citicorp | Client intermediation
Variable Interest Entity
Total involvement with SPE assets	1,745,000,000	1,778,000,000
Consolidated VIE / SPE assets	137,000,000	195,000,000
Significant unconsolidated VIE assets	1,608,000,000	1,583,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	10,000,000	145,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	10,000,000	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	20,000,000	145,000,000
Citicorp | Investment funds
Variable Interest Entity
Total involvement with SPE assets	31,474,000,000	32,324,000,000
Consolidated VIE / SPE assets	1,096,000,000	3,094,000,000
Significant unconsolidated VIE assets	30,378,000,000	29,230,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	16,000,000	191,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	382,000,000	264,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	124,000,000	81,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	522,000,000	536,000,000
Citicorp | Trust preferred securities
Variable Interest Entity
Total involvement with SPE assets	2,633,000,000	4,822,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	2,633,000,000	4,822,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	6,000,000	51,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	6,000,000	51,000,000
Citicorp | Other
Variable Interest Entity
Total involvement with SPE assets	5,685,000,000	2,439,000,000
Consolidated VIE / SPE assets	296,000,000	225,000,000
Significant unconsolidated VIE assets	5,389,000,000	2,214,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	183,000,000	143,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	1,451,000,000	649,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	23,000,000	20,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	73,000,000	78,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	1,730,000,000	890,000,000
Citicorp | Mortgage-backed securities
Funded and Unfunded Exposure
Private label mortgage-backed securities, outstanding	14,000,000,000	16,000,000,000
Citi Holdings
Variable Interest Entity
Total involvement with SPE assets	52,776,000,000	113,284,000,000
Consolidated VIE / SPE assets	2,740,000,000	9,100,000,000
Significant unconsolidated VIE assets	50,036,000,000	104,184,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	434,000,000	1,847,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	179,000,000	268,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	990,000,000	1,197,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	178,000,000	277,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	1,781,000,000	3,589,000,000
Citi Holdings | Credit card securitizations
Variable Interest Entity
Total involvement with SPE assets	292,000,000	1,867,000,000
Consolidated VIE / SPE assets	60,000,000	1,448,000,000
Significant unconsolidated VIE assets	232,000,000	419,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	0	0
Citi Holdings | Mortgage-backed securities - U.S. agency-sponsored
Variable Interest Entity
Total involvement with SPE assets	28,077,000,000	73,549,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	28,077,000,000	73,549,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	150,000,000	549,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	91,000,000	77,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	241,000,000	626,000,000
Citi Holdings | Mortgage securitizations - Non-agency-sponsored
Variable Interest Entity
Total involvement with SPE assets	9,817,000,000	13,193,000,000
Consolidated VIE / SPE assets	65,000,000	1,695,000,000
Significant unconsolidated VIE assets	9,752,000,000	11,498,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	17,000,000	35,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	1,000,000	2,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	18,000,000	37,000,000
Citi Holdings | Student loan securitizations
Variable Interest Entity
Total involvement with SPE assets		1,520,000,000
Consolidated VIE / SPE assets		1,520,000,000
Significant unconsolidated VIE assets		0
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments		0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments		0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments		0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives		0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs		0
Citi Holdings | Collateralized debt obligations (CDOs)
Variable Interest Entity
Total involvement with SPE assets	2,235,000,000	3,879,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	2,235,000,000	3,879,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	174,000,000	273,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	86,000,000	87,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	260,000,000	360,000,000
Citi Holdings | Collateralized loan obligations (CLOs)
Variable Interest Entity
Total involvement with SPE assets	1,020,000,000	2,733,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	1,020,000,000	2,733,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	54,000,000	358,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	111,000,000
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	54,000,000	469,000,000
Citi Holdings | Asset-based financing
Variable Interest Entity
Total involvement with SPE assets	1,323,000,000	3,508,000,000
Consolidated VIE / SPE assets	2,000,000	3,000,000
Significant unconsolidated VIE assets	1,321,000,000	3,505,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	37,000,000	629,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	3,000,000	3,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	86,000,000	258,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	126,000,000	890,000,000
Citi Holdings | Municipal investments
Variable Interest Entity
Total involvement with SPE assets	6,881,000,000	7,304,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	6,881,000,000	7,304,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	2,000,000	3,000,000
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	176,000,000	204,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	904,000,000	939,000,000
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	1,082,000,000	1,146,000,000
Citi Holdings | Investment funds
Variable Interest Entity
Total involvement with SPE assets	518,000,000	1,237,000,000
Consolidated VIE / SPE assets	0	0
Significant unconsolidated VIE assets	518,000,000	1,237,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	61,000,000
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	0	61,000,000
Citi Holdings | Other
Variable Interest Entity
Total involvement with SPE assets	2,613,000,000	4,494,000,000
Consolidated VIE / SPE assets	2,613,000,000	4,434,000,000
Significant unconsolidated VIE assets	0	60,000,000
Funded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, debt investments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, equity investments	0	0
Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs, funding commitments	0	0
Maximum exposure to loss in significant unconsolidated VIEs, guarantees and derivatives	0	0
Funded and Unfunded Exposure
Maximum exposure to loss in significant unconsolidated VIEs	$0	$0

SECURITIZATIONS_AND_VARIABLE_I3

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Funding Commitments (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	$8,313	$7,356
Liquidity facilities Citigroup
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	3,675	3,886
Loan commitments Citigroup
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	4,638	3,470
Citicorp
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	7,323	6,159
Citicorp | Liquidity facilities Citigroup
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	3,675	3,886
Citicorp | Liquidity facilities Citigroup | Asset-based financing
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	5	5
Citicorp | Liquidity facilities Citigroup | Municipal securities tender option bond trusts (TOBs)
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	3,670	3,881
Citicorp | Loan commitments Citigroup
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	3,648	2,273
Citicorp | Loan commitments Citigroup | Asset-based financing
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	2,180	999
Citicorp | Loan commitments Citigroup | Municipal investments
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	1,321	1,173
Citicorp | Loan commitments Citigroup | Investment funds
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	124	81
Citicorp | Loan commitments Citigroup | Other
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	23	20
Citi Holdings
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	990	1,197
Citi Holdings | Liquidity facilities Citigroup
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	0	0
Citi Holdings | Loan commitments Citigroup
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	990	1,197
Citi Holdings | Loan commitments Citigroup | Asset-based financing
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	86	258
Citi Holdings | Loan commitments Citigroup | Municipal investments
Funding Commitments for Significant Unconsolidated VIEs
Notional amount	$904	$939

SECURITIZATIONS_AND_VARIABLE_I4

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Carrying Amounts and Classifications of Consolidated Assets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Variable Interest Entity
Cash	$32,108,000,000	$29,885,000,000	$36,453,000,000	$28,701,000,000
Trading account assets	296,786,000,000	285,928,000,000
Investments	333,443,000,000	308,980,000,000
Total loans, net	628,641,000,000	645,824,000,000
Other assets	122,471,000,000	125,266,000,000
Total assets	1,842,530,000,000	1,880,382,000,000
Consolidated VIEs
Variable Interest Entity
Cash	300,000,000	400,000,000
Trading account assets	700,000,000	1,000,000,000
Investments	8,000,000,000	10,900,000,000
Total loans, net	93,100,000,000	91,900,000,000
Other assets	600,000,000	1,300,000,000
Total assets	102,700,000,000	105,500,000,000
Short-term borrowings	22,700,000,000	24,300,000,000
Long-term debt	40,100,000,000	34,800,000,000
Other liabilities	900,000,000	1,000,000,000
Total Liabilities	63,700,000,000	60,100,000,000
Significant unconsolidated VIE assets
Variable Interest Entity
Trading account assets	7,600,000,000	5,400,000,000
Investments	2,600,000,000	4,100,000,000
Total loans, net	25,000,000,000	18,800,000,000
Other assets	2,000,000,000	2,700,000,000
Total assets	37,200,000,000	31,000,000,000
Citicorp | Consolidated VIEs
Variable Interest Entity
Cash	100,000,000	200,000,000
Trading account assets	700,000,000	1,000,000,000
Investments	8,000,000,000	10,900,000,000
Total loans, net	90,600,000,000	83,200,000,000
Other assets	600,000,000	1,100,000,000
Total assets	100,000,000,000	96,400,000,000
Short-term borrowings	22,700,000,000	24,300,000,000
Long-term debt	38,100,000,000	32,800,000,000
Other liabilities	800,000,000	900,000,000
Total Liabilities	61,600,000,000	58,000,000,000
Citicorp | Significant unconsolidated VIE assets
Variable Interest Entity
Trading account assets	7,400,000,000	4,800,000,000
Investments	2,400,000,000	3,700,000,000
Total loans, net	24,900,000,000	18,200,000,000
Other assets	1,800,000,000	2,200,000,000
Total assets	36,500,000,000	28,900,000,000
Citi Holdings | Consolidated VIEs
Variable Interest Entity
Cash	200,000,000	200,000,000
Trading account assets	0	0
Investments	0	0
Total loans, net	2,500,000,000	8,700,000,000
Other assets	0	200,000,000
Total assets	2,700,000,000	9,100,000,000
Short-term borrowings	0	0
Long-term debt	2,000,000,000	2,000,000,000
Other liabilities	100,000,000	100,000,000
Total Liabilities	2,100,000,000	2,100,000,000
Citi Holdings | Significant unconsolidated VIE assets
Variable Interest Entity
Trading account assets	200,000,000	600,000,000
Investments	200,000,000	400,000,000
Total loans, net	100,000,000	600,000,000
Other assets	200,000,000	500,000,000
Total assets	$700,000,000	$2,100,000,000

SECURITIZATIONS_AND_VARIABLE_I5

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Credit Card Securitizations (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Securitized credit card receivables
Gains (losses) recognized on the securitization	$0
Ownership interests in principal amount of trust credit card receivables
Sold to investors via trust-issued securities	0
Retained by Citigroup via non-certificated interests	0
Citicorp
Ownership interests in principal amount of trust credit card receivables
Sold to investors via trust-issued securities	37,000,000,000	32,300,000,000
Retained by Citigroup as trust-issued securities	10,100,000,000	8,100,000,000
Retained by Citigroup via non-certificated interests	14,200,000,000	12,100,000,000
Total ownership interests in principal amount of trust credit card receivables	61,300,000,000	52,500,000,000
Citicorp | Credit card securitizations
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations	12,500,000,000	11,500,000,000	500,000,000
Pay down of maturing notes	-7,800,000,000	-2,100,000,000	-20,400,000,000
Citi Holdings
Ownership interests in principal amount of trust credit card receivables
Sold to investors via trust-issued securities		0
Retained by Citigroup as trust-issued securities	0	1,300,000,000
Retained by Citigroup via non-certificated interests		0
Total ownership interests in principal amount of trust credit card receivables	0	1,300,000,000
Citi Holdings | Credit card securitizations
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations	100,000,000	200,000,000	1,700,000,000
Pay down of maturing notes	$0	($100,000,000)	($100,000,000)

SECURITIZATIONS_AND_VARIABLE_I6

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Funding, Liquidity Facilities and Subordinated Interests (Details) (USD $)	12 Months Ended
In Billions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Funding, Liquidity Facilities and Subordinated Interests
Number of trusts to hold securitized credit card receivables	2
Citibank Credit Card Master Trust (Master Trust)
Funding, Liquidity Facilities and Subordinated Interests
Weighted average maturity of term notes	2 years 10 months 5 days	3 years 1 month 6 days
Term notes issued to third parties	$35.70	$27.90
Term notes retained by Citigroup affiliates	8.2	6.2
Total Trust liabilities	43.9	34.1
Citibank OMNI Master Trust (Omni Trust)
Funding, Liquidity Facilities and Subordinated Interests
Weighted average maturity of term notes	1 year 11 months	8 months 12 days
Term notes issued to third parties	1.3	4.4
Term notes retained by Citigroup affiliates	1.9	1.9
Total Trust liabilities	$3.20	$6.30

SECURITIZATIONS_AND_VARIABLE_I7

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Mortgage Securitizations (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash Flows Between Transferor and Transferee
Gains recognized on the securitization	$0
U.S. government-sponsored agency guaranteed | Citicorp
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations	27,400,000,000
Contractual servicing fees received	400,000,000
Cash flows received on retained interests and other net cash flows	100,000,000
Gains recognized on the securitization	160,000,000
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Weighted average discount rate, date of sale or securitization (as a percent)	11.00%	10.10%
Weighted average constant prepayment rate, date of sale or securitization (as a percent)	6.20%	5.50%
Key assumptions used in measuring fair value related to transferor's continuing involvement
Weighted average discount rate, transferor's continuing involvement (as a percent)	8.00%	6.90%
Weighted average constant prepayment rate, transferor's continuing involvement (as a percent)	14.70%	11.10%
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	2,224,000,000	2,519,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate	-64,000,000	-76,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate	-124,000,000	-148,000,000
Carrying value of retained interests, impact of 10% adverse change in constant prepayment rate	-86,000,000	-96,000,000
Carrying value of retained interests, impact of 20% adverse change in constant prepayment rate	-165,000,000	-187,000,000
U.S. government-sponsored agency guaranteed | Citicorp | Low end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	0.00%	0.00%
Constant prepayment rate, date of sale or securitization (as a percent)	0.00%	0.00%
Weighted average life, date of sale or securitization	0 years	0 years
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	0.00%	0.10%
Constant prepayment rate, transferor's continuing involvement (as a percent)	6.00%	6.20%
Weighted average life, transferor's continuing involvement	0 years	2 years 1 month 6 days
U.S. government-sponsored agency guaranteed | Citicorp | High end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	14.70%	12.40%
Constant prepayment rate, date of sale or securitization (as a percent)	23.10%	21.40%
Weighted average life, date of sale or securitization	9 years 8 months 12 days	12 years 4 months 24 days
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	21.20%	20.90%
Constant prepayment rate, transferor's continuing involvement (as a percent)	41.40%	30.40%
Weighted average life, transferor's continuing involvement	16 years	14 years 1 month 6 days
U.S. government-sponsored agency guaranteed | Citi Holdings
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations	400,000,000	200,000,000	400,000,000
Contractual servicing fees received	100,000,000	300,000,000	400,000,000
Gains recognized on the securitization	54,000,000	20,000,000	45,000,000
Key assumptions used in measuring fair value related to transferor's continuing involvement
Weighted average discount rate, transferor's continuing involvement (as a percent)	13.70%	9.50%
Weighted average constant prepayment rate, transferor's continuing involvement (as a percent)	23.90%	20.00%
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	150,000,000	585,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate	-5,000,000	-16,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate	-10,000,000	-32,000,000
Carrying value of retained interests, impact of 10% adverse change in constant prepayment rate	-7,000,000	-33,000,000
Carrying value of retained interests, impact of 20% adverse change in constant prepayment rate	-14,000,000	-65,000,000
U.S. government-sponsored agency guaranteed | Citi Holdings | Low end of range
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	1.90%	0.00%
Constant prepayment rate, transferor's continuing involvement (as a percent)	20.40%	9.60%
Weighted average life, transferor's continuing involvement	3 years 3 months 18 days	2 years 3 months 18 days
U.S. government-sponsored agency guaranteed | Citi Holdings | High end of range
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	19.20%	49.30%
Constant prepayment rate, transferor's continuing involvement (as a percent)	32.30%	26.20%
Weighted average life, transferor's continuing involvement	4 years 7 months 6 days	7 years 7 months 6 days
Mortgage securitizations - Non-agency-sponsored | Citicorp
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations	11,800,000,000
Contractual servicing fees received	0
Cash flows received on retained interests and other net cash flows	0
Gains recognized on the securitization	53,000,000
Mortgage securitizations - Non-agency-sponsored | Citi Holdings
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations	0
Contractual servicing fees received	0
Senior interests | Citicorp
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Weighted average discount rate, date of sale or securitization (as a percent)	4.20%	3.40%
Weighted average constant prepayment rate, date of sale or securitization (as a percent)	5.40%	7.20%
Weighted average anticipated net credit losses, date of sale or securitization (as a percent)	56.30%	49.30%
Key assumptions used in measuring fair value related to transferor's continuing involvement
Weighted average discount rate, transferor's continuing involvement (as a percent)	4.90%	5.50%
Weighted average constant prepayment rate, transferor's continuing involvement (as a percent)	10.10%	6.40%
Weighted average anticipated credit losses, transferor's continuing involvement (as a percent)	54.60%	49.50%
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	285,000,000	293,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate	-5,000,000	-6,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate	-9,000,000	-11,000,000
Carrying value of retained interests, impact of 10% adverse change in constant prepayment rate	-1,000,000	-1,000,000
Carrying value of retained interests, impact of 20% adverse change in constant prepayment rate	-2,000,000	-2,000,000
Carrying value of retained interests, impact of 10% adverse change in anticipated net credit losses	-2,000,000	-2,000,000
Carrying value of retained interests, impact of 20% adverse change in anticipated net credit losses	-3,000,000	-3,000,000
Senior interests | Citicorp | Low end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	1.40%	2.30%
Constant prepayment rate, date of sale or securitization (as a percent)	0.00%	5.40%
Anticipated net credit losses, date of sale or securitization (as a percent)	40.00%	47.20%
Weighted average life, date of sale or securitization	2 years 7 months 6 days	2 years 10 months 24 days
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	1.10%	0.50%
Constant prepayment rate, transferor's continuing involvement (as a percent)	2.00%	1.30%
Anticipated credit losses, transferor's continuing involvement (as a percent)	0.00%	0.10%
Weighted average life, transferor's continuing involvement	3 months 18 days	0 years
Senior interests | Citicorp | High end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	6.60%	4.30%
Constant prepayment rate, date of sale or securitization (as a percent)	7.00%	10.00%
Anticipated net credit losses, date of sale or securitization (as a percent)	67.10%	53.00%
Weighted average life, date of sale or securitization	11 years 1 month 6 days	9 years 8 months 12 days
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	17.70%	17.40%
Constant prepayment rate, transferor's continuing involvement (as a percent)	100.00%	100.00%
Anticipated credit losses, transferor's continuing involvement (as a percent)	92.40%	80.00%
Weighted average life, transferor's continuing involvement	14 years 4 months 24 days	11 years 10 months 24 days
Senior interests | Citi Holdings
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)		9.90%
Weighted average discount rate, transferor's continuing involvement (as a percent)	36.30%	9.90%
Weighted average constant prepayment rate, transferor's continuing involvement (as a percent)	16.60%	15.60%
Anticipated credit losses, transferor's continuing involvement (as a percent)		0.30%
Weighted average anticipated credit losses, transferor's continuing involvement (as a percent)	19.20%	0.30%
Weighted average life, transferor's continuing involvement		5 years 2 months
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	25,000,000	50,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate	-2,000,000	-3,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate	-4,000,000	-5,000,000
Carrying value of retained interests, impact of 10% adverse change in constant prepayment rate	-2,000,000	-3,000,000
Carrying value of retained interests, impact of 20% adverse change in constant prepayment rate	-3,000,000	-6,000,000
Carrying value of retained interests, impact of 10% adverse change in anticipated net credit losses	-4,000,000	-5,000,000
Carrying value of retained interests, impact of 20% adverse change in anticipated net credit losses	-7,000,000	-11,000,000
Senior interests | Citi Holdings | Low end of range
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	5.10%
Constant prepayment rate, transferor's continuing involvement (as a percent)	6.70%	12.30%
Anticipated credit losses, transferor's continuing involvement (as a percent)	0.30%
Weighted average life, transferor's continuing involvement	3 years 10 months 24 days
Senior interests | Citi Holdings | High end of range
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	47.10%
Constant prepayment rate, transferor's continuing involvement (as a percent)	20.00%	27.30%
Anticipated credit losses, transferor's continuing involvement (as a percent)	73.70%
Weighted average life, transferor's continuing involvement	6 years 4 months 24 days
Subordinated interests | Citicorp
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Weighted average discount rate, date of sale or securitization (as a percent)	7.80%	7.80%
Weighted average constant prepayment rate, date of sale or securitization (as a percent)	3.20%	7.50%
Weighted average anticipated net credit losses, date of sale or securitization (as a percent)	43.10%	49.20%
Key assumptions used in measuring fair value related to transferor's continuing involvement
Weighted average discount rate, transferor's continuing involvement (as a percent)	8.20%	11.20%
Weighted average constant prepayment rate, transferor's continuing involvement (as a percent)	7.20%	7.40%
Weighted average anticipated credit losses, transferor's continuing involvement (as a percent)	52.50%	52.80%
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	554,000,000	429,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate	-30,000,000	-25,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate	-57,000,000	-48,000,000
Carrying value of retained interests, impact of 10% adverse change in constant prepayment rate	-9,000,000	-7,000,000
Carrying value of retained interests, impact of 20% adverse change in constant prepayment rate	-18,000,000	-14,000,000
Carrying value of retained interests, impact of 10% adverse change in anticipated net credit losses	-9,000,000	-7,000,000
Carrying value of retained interests, impact of 20% adverse change in anticipated net credit losses	-16,000,000	-14,000,000
Subordinated interests | Citicorp | Low end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	2.60%	0.10%
Constant prepayment rate, date of sale or securitization (as a percent)	0.50%	0.10%
Anticipated net credit losses, date of sale or securitization (as a percent)	8.90%	0.10%
Weighted average life, date of sale or securitization	3 years	2 years 6 months
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	1.30%	2.10%
Constant prepayment rate, transferor's continuing involvement (as a percent)	0.50%	1.40%
Anticipated credit losses, transferor's continuing involvement (as a percent)	13.70%	25.50%
Weighted average life, transferor's continuing involvement	0 years	0 years
Subordinated interests | Citicorp | High end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	9.10%	19.20%
Constant prepayment rate, date of sale or securitization (as a percent)	8.90%	11.20%
Anticipated net credit losses, date of sale or securitization (as a percent)	58.50%	89.00%
Weighted average life, date of sale or securitization	14 years 6 months	16 years 6 months
Key assumptions used in measuring fair value related to transferor's continuing involvement
Discount rate, transferor's continuing involvement (as a percent)	19.60%	19.60%
Constant prepayment rate, transferor's continuing involvement (as a percent)	16.20%	23.10%
Anticipated credit losses, transferor's continuing involvement (as a percent)	83.80%	81.90%
Weighted average life, transferor's continuing involvement	24 years 4 months 24 days	26 years
Agency and non-agency | Citicorp
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations		72,500,000,000	56,500,000,000
Contractual servicing fees received		400,000,000	500,000,000
Cash flows received on retained interests and other net cash flows		100,000,000	100,000,000
Gains recognized on the securitization		203,000,000	30,000,000
Collateralized debt obligations (CDOs) | Citi Holdings
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	6,000,000	19,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate	-1,000,000	-1,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate	-2,000,000	-2,000,000
Collateralized debt obligations (CDOs) | Citi Holdings | Low end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	44.70%	44.30%
Collateralized debt obligations (CDOs) | Citi Holdings | High end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	49.20%	48.70%
Collateralized loan obligations (CLOs) | Low end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	1.40%	1.50%
Collateralized loan obligations (CLOs) | High end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	1.60%	1.60%
Collateralized loan obligations (CLOs) | Citicorp
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	1,539,000,000	1,333,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate	-9,000,000	-7,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate	-18,000,000	-14,000,000
Collateralized loan obligations (CLOs) | Citi Holdings
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests	10,000,000	31,000,000
Collateralized loan obligations (CLOs) | Citi Holdings | Low end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	4.50%	4.50%
Collateralized loan obligations (CLOs) | Citi Holdings | High end of range
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)	5.00%	5.00%
Asset-backed securities | Citicorp
Cash Flows Between Transferor and Transferee
Proceeds from new securitizations	500,000,000	500,000,000	0
Key assumptions used in measuring fair value of retained interests at date of sale or securitization of mortgage receivables
Discount rate, date of sale or securitization (as a percent)		3.00%
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests		1,316,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate		-11,000,000
Carrying value of retained interests, impact of 20% adverse change in discount rate		-23,000,000
Asset-backed securities | Citi Holdings
Sensitivity analysis of fair value of interests continued to be held by transferor
Carrying value of retained interests		95,000,000
Carrying value of retained interests, impact of 10% adverse change in discount rate		0
Carrying value of retained interests, impact of 20% adverse change in discount rate		$0

SECURITIZATIONS_AND_VARIABLE_I8

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Mortgage Servicing Rights (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Capitalized MSRs
Balance at end of period	$1,845,000,000	$2,718,000,000
Mortgage servicing rights
Classification of Securitizations
Fair value of capitalized mortgage servicing rights	1,800,000,000	2,700,000,000
Principal amount of loans and other financial instruments	224,000,000,000	286,000,000,000
Capitalized MSRs
Balance at beginning of period	2,718,000,000	1,942,000,000
Originations	217,000,000	634,000,000
Changes in fair value of MSRs due to changes in inputs and assumptions	-344,000,000	640,000,000
Other changes	-429,000,000	-496,000,000
Sale of MSRs	-317,000,000	-2,000,000
Balance at end of period	1,845,000,000	2,718,000,000	1,942,000,000
Servicing fees	638,000,000	800,000,000	990,000,000
Late fees	25,000,000	42,000,000	65,000,000
Ancillary fees	56,000,000	100,000,000	122,000,000
Total MSR fees	719,000,000	942,000,000	1,177,000,000
Mortgage securitizations - Non-agency-sponsored
Capitalized MSRs
Original par value of securities transferred to re-securitization entities	1,200,000,000	955,000,000
Fair value of re-securitizations deals in which the entity holds a retained interest	545,000,000	425,000,000
Market value of retained interest related to re-securitization transaction	194,000,000	131,000,000
Original par value of re-securitizations deals in which the entity holds a retained interest	5,100,000,000	6,100,000,000
Senior interests
Capitalized MSRs
Fair value of re-securitizations deals in which the entity holds a retained interest	133,000,000	58,000,000
Subordinated interests
Capitalized MSRs
Fair value of re-securitizations deals in which the entity holds a retained interest	412,000,000	367,000,000
U.S. government-sponsored agency guaranteed
Capitalized MSRs
Fair value of re-securitizations deals in which the entity holds a retained interest	1,800,000,000	1,500,000,000
Market value of retained interest related to re-securitization transaction	1,500,000,000	1,200,000,000
Securities transferred to re-securitization entities	22,500,000,000	26,300,000,000
Original fair value of re-securitizations deals in which the entity holds a retained interest	73,000,000,000	75,500,000,000
Citicorp | Mortgage servicing rights
Classification of Securitizations
Fair value of capitalized mortgage servicing rights	$1,700,000,000	$2,100,000,000

SECURITIZATIONS_AND_VARIABLE_I9

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Asset-Backed Commercial Paper Conduits (Details) (USD $)	12 Months Ended		3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2013
	conduit
Classification of Other Securitization Details
Commercial paper	$16,155,000,000	$17,878,000,000
Citi-administered asset-backed commercial paper conduits (ABCP)
Classification of Other Securitization Details
Purchased assets outstanding under conduits	29,200,000,000	31,800,000,000
Incremental funding commitments with clients	15,300,000,000	13,500,000,000
Weighted average life of commercial paper issued by conduits	57 days	67 days
Number of conduit which holds only loans that are fully guaranteed primarily by AAA-rated government agencies	1
Citi-administered asset-backed commercial paper conduits (ABCP) | Minimum
Classification of Other Securitization Details
Letters of credit as percentage of conduit assets	8.00%
Floor price of conduit's assets	200,000,000
Citi-administered asset-backed commercial paper conduits (ABCP) | Maximum
Classification of Other Securitization Details
Letters of credit as percentage of conduit assets	10.00%
Citi-administered asset-backed consolidated commercial paper conduits (ABCP)
Classification of Other Securitization Details
Letters of credit provided to conduits	2,300,000,000	2,300,000,000
Commercial paper	10,600,000,000	13,900,000,000
Increase in the amount of assets due to consolidation of loan because of changes in the primary risks and design of the conduit		7,000,000,000
Increase in the amount of liabilities due to consolidation of loan because of changes in the primary risks and design of the conduit	7,000,000,000
Net pretax gain due to consolidation of loan because of changes in the primary risks and design of the conduit			$40,000,000

Recovered_Sheet1

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Asset Based Financing (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Variable Interest Entity
Total unconsolidated VIE assets	$433,920,000,000	$475,766,000,000
Maximum exposure to unconsolidated VIEs	45,937,000,000	39,001,000,000
Citicorp
Variable Interest Entity
Total unconsolidated VIE assets	383,884,000,000	371,582,000,000
Maximum exposure to unconsolidated VIEs	44,156,000,000	35,412,000,000
Citicorp | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	61,428,000,000	44,913,000,000
Maximum exposure to unconsolidated VIEs	25,472,000,000	18,614,000,000
Proceeds from new securitizations	500,000,000	500,000,000	0
Cash flows received on retained interest and other net cash flows	200,000,000	700,000,000	300,000,000
Citi Holdings
Variable Interest Entity
Total unconsolidated VIE assets	50,036,000,000	104,184,000,000
Maximum exposure to unconsolidated VIEs	1,781,000,000	3,589,000,000
Citi Holdings | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	1,321,000,000	3,505,000,000
Maximum exposure to unconsolidated VIEs	126,000,000	890,000,000
Cash flows received on retained interest and other net cash flows	100,000,000	200,000,000	1,700,000,000
Commercial and other real estate | Citicorp | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	25,978,000,000	14,042,000,000
Maximum exposure to unconsolidated VIEs	9,426,000,000	3,902,000,000
Commercial and other real estate | Citi Holdings | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	168,000,000	774,000,000
Maximum exposure to unconsolidated VIEs	50,000,000	298,000,000
Corporate loans | Citicorp | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	460,000,000	2,221,000,000
Maximum exposure to unconsolidated VIEs	473,000,000	1,754,000,000
Corporate loans | Citi Holdings | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	0	112,000,000
Maximum exposure to unconsolidated VIEs	0	96,000,000
Airplanes, ships and other assets | Citicorp | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	34,990,000,000	28,650,000,000
Maximum exposure to unconsolidated VIEs	15,573,000,000	12,958,000,000
Airplanes, ships and other assets | Citi Holdings | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	1,153,000,000	2,619,000,000
Maximum exposure to unconsolidated VIEs	$76,000,000	$496,000,000

Recovered_Sheet2

SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Municipal Securities Tender Option Bond Trusts (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Variable Interest Entity
Number of TOB trusts	2
Municipal securities tender option bond trusts (TOBs)
Variable Interest Entity
Floater inventory held by entity	3,000,000	$176,000,000
Municipal bonds owned by trusts, that have credit guarantee provided by the Company	198,000,000	230,000,000
Liquidity agreements, customer TOB trust	3,700,000,000	3,900,000,000
Notional amount of offsetting reimbursement agreements	2,600,000,000	2,800,000,000
Liquidity agreements, other trusts	7,400,000,000	5,400,000,000
Maximum | Municipal securities tender option bond trusts (TOBs)
Variable Interest Entity
The threshold ownership percentage on Residual value of customers TOBs for which the reimbursement agreement applied	25.00%
Client intermediation
Variable Interest Entity
Proceeds from new securitizations	2,000,000,000

DERIVATIVES_ACTIVITIES_Derivat

DERIVATIVES ACTIVITIES - Derivative Notionals (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Net investment hedge under ASC 815 (SFAS 133)
Derivatives
Derivative notionals	$3,752	$6,450
Hedging instruments under ASC 815 (SFAS 133)
Derivatives
Derivative notionals	262,813	235,193
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contracts
Derivatives
Derivative notionals	163,348	132,843
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contracts | Swaps
Derivatives
Derivative notionals	163,348	132,823
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contracts | Futures and forwards
Derivatives
Derivative notionals	0	20
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contract options | Written or Sold
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Interest rate contract options | Purchased
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contracts
Derivatives
Derivative notionals	98,376	102,255
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contracts | Swaps
Derivatives
Derivative notionals	25,157	22,402
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contracts | Futures and forwards
Derivatives
Derivative notionals	73,219	79,646
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contract options | Written or Sold
Derivatives
Derivative notionals	0	101
Hedging instruments under ASC 815 (SFAS 133) | Foreign exchange contract options | Purchased
Derivatives
Derivative notionals	0	106
Hedging instruments under ASC 815 (SFAS 133) | Equity contracts
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Equity contracts | Swaps
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Equity contracts | Futures and forwards
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Equity contract options | Written or Sold
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Equity contract options | Purchased
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Commodity and other contracts
Derivatives
Derivative notionals	1,089	0
Hedging instruments under ASC 815 (SFAS 133) | Commodity and other contracts | Swaps
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Commodity and other contracts | Futures and forwards
Derivatives
Derivative notionals	1,089	0
Hedging instruments under ASC 815 (SFAS 133) | Commodity and other contract options | Written or Sold
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Commodity and other contract options | Purchased
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Credit derivatives
Derivatives
Derivative notionals	0	95
Hedging instruments under ASC 815 (SFAS 133) | Credit derivatives | Written or Sold
Derivatives
Derivative notionals	0	0
Hedging instruments under ASC 815 (SFAS 133) | Credit derivatives | Purchased
Derivatives
Derivative notionals	0	95
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives
Derivatives
Derivative notionals	58,167,908	59,871,634
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Interest rate contracts
Derivatives
Derivative notionals	45,434,346	49,083,760
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Interest rate contracts | Swaps
Derivatives
Derivative notionals	31,906,549	36,370,196
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Interest rate contracts | Futures and forwards
Derivatives
Derivative notionals	7,044,990	6,129,742
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Interest rate contract options | Written or Sold
Derivatives
Derivative notionals	3,311,751	3,342,832
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Interest rate contract options | Purchased
Derivatives
Derivative notionals	3,171,056	3,240,990
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Foreign exchange contracts
Derivatives
Derivative notionals	9,429,652	7,348,108
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Foreign exchange contracts | Swaps
Derivatives
Derivative notionals	4,567,977	3,298,500
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Foreign exchange contracts | Futures and forwards
Derivatives
Derivative notionals	2,154,773	1,982,303
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Foreign exchange contract options | Written or Sold
Derivatives
Derivative notionals	1,343,520	1,037,433
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Foreign exchange contract options | Purchased
Derivatives
Derivative notionals	1,363,382	1,029,872
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Equity contracts
Derivatives
Derivative notionals	742,697	723,695
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Equity contracts | Swaps
Derivatives
Derivative notionals	131,344	100,019
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Equity contracts | Futures and forwards
Derivatives
Derivative notionals	30,510	23,161
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Equity contract options | Written or Sold
Derivatives
Derivative notionals	305,627	333,945
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Equity contract options | Purchased
Derivatives
Derivative notionals	275,216	266,570
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Commodity and other contracts
Derivatives
Derivative notionals	396,986	377,485
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Commodity and other contracts | Swaps
Derivatives
Derivative notionals	90,817	81,112
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Commodity and other contracts | Futures and forwards
Derivatives
Derivative notionals	106,021	98,265
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Commodity and other contract options | Written or Sold
Derivatives
Derivative notionals	104,581	100,482
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Commodity and other contract options | Purchased
Derivatives
Derivative notionals	95,567	97,626
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Credit derivatives
Derivatives
Derivative notionals	2,164,227	2,338,586
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Credit derivatives | Written or Sold
Derivatives
Derivative notionals	1,063,858	1,143,363
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Trading derivatives | Credit derivatives | Purchased
Derivatives
Derivative notionals	1,100,369	1,195,223
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges
Derivatives
Derivative notionals	131,014	215,026
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Interest rate contracts
Derivatives
Derivative notionals	83,073	160,972
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Interest rate contracts | Swaps
Derivatives
Derivative notionals	31,945	93,286
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Interest rate contracts | Futures and forwards
Derivatives
Derivative notionals	42,305	61,398
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Interest rate contract options | Written or Sold
Derivatives
Derivative notionals	3,913	3,103
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Interest rate contract options | Purchased
Derivatives
Derivative notionals	4,910	3,185
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Foreign exchange contracts
Derivatives
Derivative notionals	31,923	34,310
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Foreign exchange contracts | Swaps
Derivatives
Derivative notionals	23,990	20,013
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Foreign exchange contracts | Futures and forwards
Derivatives
Derivative notionals	7,069	14,226
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Foreign exchange contract options | Written or Sold
Derivatives
Derivative notionals	432	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Foreign exchange contract options | Purchased
Derivatives
Derivative notionals	432	71
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Equity contracts
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Equity contracts | Swaps
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Equity contracts | Futures and forwards
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Equity contract options | Written or Sold
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Equity contract options | Purchased
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Commodity and other contracts
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Commodity and other contracts | Swaps
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Commodity and other contracts | Futures and forwards
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Commodity and other contract options | Written or Sold
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Commodity and other contract options | Purchased
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Credit derivatives
Derivatives
Derivative notionals	16,018	19,744
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Credit derivatives | Written or Sold
Derivatives
Derivative notionals	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other derivative instruments, Management hedges | Credit derivatives | Purchased
Derivatives
Derivative notionals	$16,018	$19,744

DERIVATIVES_ACTIVITIES_Derivat1

DERIVATIVES ACTIVITIES - Derivative Mark-to-Market (MTM) Receivables/Payables (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Derivative Mark-to-Market (MTM) Receivables/Payables
Netting of cash collateral received	($47,625,000,000)	($34,893,000,000)
Netting of cash collateral paid	-47,769,000,000	-39,094,000,000
Cash collateral paid	0
Non-cash collateral paid	0
Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Cash collateral received, gross		138,000,000
Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	886,237,000,000	795,239,000,000
Cash collateral paid, net of amount used to offset derivative liabilities	6,523,000,000	6,073,000,000
Less: Netting agreements to assets	-777,178,000,000	-713,598,000,000
Netting of cash collateral received	-47,625,000,000	-34,893,000,000
Total trading account derivatives, assets	67,957,000,000	52,821,000,000
Cash collateral received	-867,000,000	-365,000,000
Non-cash collateral received	-10,043,000,000	-7,478,000,000
Total Net receivables	57,047,000,000	44,978,000,000
Cash collateral paid, gross	54,292,000,000	45,167,000,000
Does not meet applicable offsetting guidance, assets	11,000,000,000	16,000,000,000
Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Less: Netting agreements to assets		-392,000,000,000
Less: Netting agreements to liabilities		-392,000,000,000
Trading accounts assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Less: Netting agreements to assets		-317,000,000,000
Less: Netting agreements to liabilities		-317,000,000,000
Trading accounts assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Less: Netting agreements to assets		-5,000,000,000
Less: Netting agreements to liabilities		-5,000,000,000
Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	883,193,000,000	791,119,000,000
Cash collateral received, net of amount used to offset derivative assets	9,846,000,000	8,827,000,000
Less: Netting agreements to liabilities	-777,178,000,000	-713,598,000,000
Netting of cash collateral paid	-47,769,000,000	-39,094,000,000
Total derivative liabilities	68,092,000,000	47,254,000,000
Cash collateral paid	-11,000,000	-5,000,000
Non-cash collateral paid	-6,264,000,000	-3,345,000,000
Total Net payables	61,817,000,000	43,904,000,000
Cash collateral received, gross	57,471,000,000	43,720,000,000
Does not meet applicable offsetting guidance, liabilities	10,000,000,000	16,000,000,000
Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Less: Netting agreements to assets	-509,000,000,000
Less: Netting agreements to liabilities	-510,000,000,000
Netting of cash collateral paid	-46,000,000,000	-33,000,000,000
Trading accounts liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Less: Netting agreements to assets	-263,000,000,000
Less: Netting agreements to liabilities	-264,000,000,000
Netting of cash collateral paid	-2,000,000,000	-6,000,000,000
Trading accounts liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Less: Netting agreements to assets	-5,000,000,000
Less: Netting agreements to liabilities	-3,000,000,000
Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	4,326,000,000	4,290,000,000
Cash collateral paid, net of amount used to offset derivative liabilities	123,000,000	82,000,000
Less: Netting agreements to assets	0	0
Netting of cash collateral received	-1,791,000,000	-2,951,000,000
Total trading account derivatives, assets	2,658,000,000	1,421,000,000
Cash collateral received	0	0
Non-cash collateral received	-1,293,000,000	-341,000,000
Total Net receivables	1,365,000,000	1,080,000,000
Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	1,784,000,000	1,729,000,000
Cash collateral received, net of amount used to offset derivative assets	7,000,000	282,000,000
Less: Netting agreements to liabilities	0	0
Netting of cash collateral received	-15,000,000
Netting of cash collateral paid	-15,000,000	0
Total derivative liabilities	1,776,000,000	2,011,000,000
Cash collateral paid		0
Non-cash collateral paid		0
Total Net payables	1,776,000,000	2,011,000,000
Cash collateral received, gross	1,798,000,000	3,233,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	9,693,000,000	5,001,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	1,815,000,000	2,135,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	3,795,000,000	4,076,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	1,027,000,000	1,149,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	5,808,000,000	3,461,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	1,508,000,000	956,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	4,300,000,000	2,505,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	1,072,000,000	891,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	204,000,000	306,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	868,000,000	585,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	3,117,000,000	3,087,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	3,117,000,000	3,082,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	5,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	439,000,000	854,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	414,000,000	854,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	25,000,000	0
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	3,885,000,000	1,540,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	3,885,000,000	1,540,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	743,000,000	1,244,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	743,000,000	1,244,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	678,000,000	989,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	678,000,000	989,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	588,000,000	293,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	588,000,000	293,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables		0
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables		0
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables		0
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables		0
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables		0
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables		0
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables		2,000,000
Derivative instruments designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables		2,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	876,544,000,000	790,238,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	881,378,000,000	788,984,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	531,000,000	214,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	757,000,000	580,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	632,645,000,000	624,919,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	376,778,000,000	313,772,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	255,847,000,000	311,114,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	20,000,000	33,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	621,210,000,000	616,335,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	359,689,000,000	297,115,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	261,499,000,000	319,190,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Trading accounts liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	22,000,000	30,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	253,000,000	64,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	106,000,000	37,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	6,000,000	27,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	141,000,000	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	185,000,000	14,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	9,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	21,000,000	5,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Interest rate contracts | Other liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	164,000,000	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	152,109,000,000	91,014,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	151,736,000,000	89,847,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	366,000,000	1,119,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	7,000,000	48,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	158,083,000,000	87,393,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	157,650,000,000	86,147,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	387,000,000	1,191,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Trading accounts liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	46,000,000	55,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	79,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	79,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	17,000,000	3,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	17,000,000	3,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Foreign exchange contracts | Other liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	24,752,000,000	24,877,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	20,425,000,000	19,080,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	16,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	4,311,000,000	5,797,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	32,469,000,000	34,292,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	28,333,000,000	28,458,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	35,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Trading accounts liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	4,101,000,000	5,834,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Equity contracts | Other liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	23,520,000,000	9,082,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	19,943,000,000	7,921,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Trading accounts assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	3,577,000,000	1,161,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	26,186,000,000	10,170,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	23,103,000,000	9,059,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Trading accounts liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	3,083,000,000	1,111,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Other assets | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Commodity and other contract options | Other liabilities | Exchange traded
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	0	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	43,518,000,000	40,346,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	39,412,000,000	38,496,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	4,106,000,000	1,850,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	43,430,000,000	40,794,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	39,439,000,000	38,247,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Trading accounts liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	3,991,000,000	2,547,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	278,000,000	71,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other assets | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	265,000,000	71,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other assets | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	13,000,000	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	555,000,000	563,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other liabilities | Over-the-counter
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	384,000,000	563,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Other liabilities | Cleared
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	171,000,000	0
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Purchased | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	18,430,000,000	13,673,000,000
Derivative payables		28,158,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Purchased | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	25,972,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Sold | Trading accounts assets
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative receivables	25,088,000,000	26,673,000,000
Derivative payables		12,636,000,000
Derivative instruments not designated as ASC 815 (SFAS 133) hedges | Credit derivatives | Sold | Trading accounts liabilities
Derivative Mark-to-Market (MTM) Receivables/Payables
Derivative payables	$17,458,000,000

DERIVATIVES_ACTIVITIES_Gains_L

DERIVATIVES ACTIVITIES - Gains (Losses) Included in Other Revenue (Details) (Other revenue, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative gain (losses)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	($2,738)	($750)	($1,267)
Interest rate contracts
Derivative gain (losses)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	291	-376	-427
Foreign exchange contracts
Derivative gain (losses)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	-2,894	221	182
Credit derivatives
Derivative gain (losses)
Gains (losses) recognized in Other revenue related to derivatives not designated in a qualifying hedging relationship	($135)	($595)	($1,022)

DERIVATIVES_ACTIVITIES_Fair_Va

DERIVATIVES ACTIVITIES - Fair Value Hedges (Details) (Other revenue, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Gain (loss) on fair value hedges
Gain (loss) on the derivatives in designated and qualifying fair value hedges	$2,692	($3,023)	$499
Gain (loss) on the hedged item in designated and qualifying fair value hedges	-2,668	3,019	-702
Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	37	-88	-233
Net gain (loss) excluded from assessment of the effectiveness of fair value hedges	-13	84	30
Interest rate contracts
Gain (loss) on fair value hedges
Gain (loss) on the derivatives in designated and qualifying fair value hedges	1,546	-3,288	122
Gain (loss) on the hedged item in designated and qualifying fair value hedges	-1,496	3,204	-371
Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	53	-84	-249
Net gain (loss) excluded from assessment of the effectiveness of fair value hedges	-3	0	0
Foreign exchange contracts
Gain (loss) on fair value hedges
Gain (loss) on the derivatives in designated and qualifying fair value hedges	1,367	265	377
Gain (loss) on the hedged item in designated and qualifying fair value hedges	-1,422	-185	-331
Hedge ineffectiveness recognized in earnings on designated and qualifying fair value hedges	-16	-4	16
Net gain (loss) excluded from assessment of the effectiveness of fair value hedges	-39	84	30
Commodity and other contract options
Gain (loss) on fair value hedges
Gain (loss) on the derivatives in designated and qualifying fair value hedges	-221	0
Gain (loss) on the hedged item in designated and qualifying fair value hedges	250	0
Net gain (loss) excluded from assessment of the effectiveness of fair value hedges	$29	$0

DERIVATIVES_ACTIVITIES_Cash_Fl

DERIVATIVES ACTIVITIES - Cash Flow Hedges (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pretax change in accumulated other comprehensive income (loss)
Cash flow hedges expected to be reclassified within 12 months	($400,000,000)
Maximum length of time hedged in cash flow hedge	10 years
Cash Flow Hedging
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	134,000,000	797,000,000	-179,000,000
Effective portion of cash flow hedges reclassified from AOCI to earnings	-409,000,000	-876,000,000	-1,017,000,000
Interest rate contracts | Cash Flow Hedging
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	299,000,000	749,000,000	-322,000,000
Effective portion of cash flow hedges reclassified from AOCI to earnings	-260,000,000	-700,000,000	-837,000,000
Foreign exchange contracts | Cash Flow Hedging
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	-167,000,000	34,000,000	143,000,000
Effective portion of cash flow hedges reclassified from AOCI to earnings	-149,000,000	-176,000,000	-180,000,000
Credit derivatives | Cash Flow Hedging
Pretax change in accumulated other comprehensive income (loss)
Effective portion of cash flow hedges included in AOCI	$2,000,000	$14,000,000	$0

DERIVATIVES_ACTIVITIES_Net_Inv

DERIVATIVES ACTIVITIES - Net Investment Hedges (Details) (Net Investment Hedging, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net Investment Hedging
Derivative gain (losses)
Net investment hedge ineffectiveness recorded in earnings	$0
Gain (loss) recognized in OCI, effective portion, net	$2,890,000,000	$2,370,000,000	($3,829,000,000)

DERIVATIVES_ACTIVITIES_Credit_

DERIVATIVES ACTIVITIES - Credit Derivatives (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
	agency
Credit Derivative
Percentage of receivables from counterparties with collateral agreements	98.00%	98.00%
Fair value, Receivable	$43,796,000,000	$40,417,000,000
Fair Value, Payable	43,985,000,000	41,359,000,000
Notionals, Protection Purchased	1,116,387,000,000	1,215,062,000,000
Notionals, Protection Sold	1,063,858,000,000	1,143,363,000,000
Fair value of derivative in liability position	30,000,000,000	26,000,000,000
Fair value of collateral already posted	27,000,000,000	24,000,000,000
Number of rating agencies	3
Additional collateral to be posted	2,000,000,000
Collateral to be segregated	100,000,000
Aggregate cash obligations and collateral requirements	2,100,000,000
Purchased
Credit Derivative
Fair value, Receivable	18,708,000,000	13,744,000,000
Fair Value, Payable	26,527,000,000	28,723,000,000
Sold
Credit Derivative
Fair value, Receivable	25,088,000,000	26,673,000,000
Fair Value, Payable	17,458,000,000	12,636,000,000
Within 1 year
Credit Derivative
Fair value, Receivable	4,356,000,000	2,901,000,000
Fair Value, Payable	4,278,000,000	3,262,000,000
Notionals, Protection Purchased	250,489,000,000	254,305,000,000
Notionals, Protection Sold	229,502,000,000	221,562,000,000
From 1 to 5 years
Credit Derivative
Fair value, Receivable	34,692,000,000	31,674,000,000
Fair Value, Payable	35,160,000,000	32,349,000,000
Notionals, Protection Purchased	790,251,000,000	883,879,000,000
Notionals, Protection Sold	772,001,000,000	853,391,000,000
After 5 years
Credit Derivative
Fair value, Receivable	4,748,000,000	5,842,000,000
Fair Value, Payable	4,547,000,000	5,748,000,000
Notionals, Protection Purchased	75,647,000,000	76,878,000,000
Notionals, Protection Sold	62,355,000,000	68,410,000,000
Investment Grade
Credit Derivative
Fair value, Receivable	17,432,000,000	17,150,000,000
Fair Value, Payable	17,182,000,000	17,174,000,000
Notionals, Protection Purchased	824,831,000,000	812,918,000,000
Notionals, Protection Sold	786,848,000,000	752,640,000,000
Non-Investment Grade
Credit Derivative
Fair value, Receivable	26,364,000,000	23,267,000,000
Fair Value, Payable	26,803,000,000	24,185,000,000
Notionals, Protection Purchased	291,556,000,000	402,144,000,000
Notionals, Protection Sold	277,010,000,000	390,723,000,000
Credit default swaps and options
Credit Derivative
Fair value, Receivable	42,930,000,000	40,233,000,000
Fair Value, Payable	42,201,000,000	39,930,000,000
Notionals, Protection Purchased	1,094,199,000,000	1,201,716,000,000
Notionals, Protection Sold	1,054,671,000,000	1,141,864,000,000
Total return swaps and other
Credit Derivative
Fair value, Receivable	866,000,000	184,000,000
Fair Value, Payable	1,784,000,000	1,429,000,000
Notionals, Protection Purchased	22,188,000,000	13,346,000,000
Notionals, Protection Sold	9,187,000,000	1,499,000,000
Bank
Credit Derivative
Fair value, Receivable	24,828,000,000	24,992,000,000
Fair Value, Payable	23,189,000,000	23,455,000,000
Notionals, Protection Purchased	574,764,000,000	739,646,000,000
Notionals, Protection Sold	604,700,000,000	727,748,000,000
Broker-dealer
Credit Derivative
Fair value, Receivable	8,093,000,000	8,840,000,000
Fair Value, Payable	9,309,000,000	9,820,000,000
Notionals, Protection Purchased	204,542,000,000	254,250,000,000
Notionals, Protection Sold	199,693,000,000	224,073,000,000
Non-financial
Credit Derivative
Fair value, Receivable	91,000,000	138,000,000
Fair Value, Payable	113,000,000	162,000,000
Notionals, Protection Purchased	3,697,000,000	4,930,000,000
Notionals, Protection Sold	1,595,000,000	2,820,000,000
Insurance and other financial institutions
Credit Derivative
Fair value, Receivable	10,784,000,000	6,447,000,000
Fair Value, Payable	11,374,000,000	7,922,000,000
Notionals, Protection Purchased	333,384,000,000	216,236,000,000
Notionals, Protection Sold	$257,870,000,000	$188,722,000,000

CONCENTRATIONS_OF_CREDIT_RISK_1

CONCENTRATIONS OF CREDIT RISK (Details) (Total investments, Geographic, USD $)	12 Months Ended
In Billions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
U.S.
Concentration Risk [Line Items]
Credit exposure from investment securities, loans and trading assets	$216.30	$168.40
JAPAN
Concentration Risk [Line Items]
Credit exposure from investment securities, loans and trading assets	32	29
MEXICO
Concentration Risk [Line Items]
Credit exposure from investment securities, loans and trading assets	29.7	37
State and Municipalities
Concentration Risk [Line Items]
Credit exposure from investment securities, loans and trading assets	$31	$33.10

FAIR_VALUE_MEASUREMENT_Market_

FAIR VALUE MEASUREMENT - Market Valuation Adjustments (Details) (USD $)	12 Months Ended			3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Credit and funding valuation adjustments contra-liability (contra-asset)
Counterparty CVA	($1,853)	($1,733)		($1,853)
Asset FVA	-518	0		-518
Citigroup (own-credit) CVA	580	651		580
Liability FVA	19	0		19
Total CVA—derivative instruments	-1,772	-1,082		-1,772
Credit, Funding and Debt Valuation Adjustments Gain (Loss) [Abstract]
Counterparty CVA	-43	291	805
Asset FVA	-518	0	0
Own-credit CVA	-65	-223	-1,126
Liability FVA	19	0	0
Total CVA—derivative instruments	-607	68	-321
DVA related to own FVO liabilities	217	-410	-2,009
Total CVA and DVA	-390	-342	-2,330
Weighted average FICO score of the underlying collateral for Alt-A mortgage securities recorded at fair value, low end of range	680
Weighted average FICO score of the underlying collateral for Alt-A mortgage securities recorded at fair value, high end of range	720
Maximum percentage of underlying collateral where FICO scores are greater than 720	30.00%
Trading account assets and liabilities | Change in Accounting Method Accounted for as Change in Estimate | Principal transactions
Credit, Funding and Debt Valuation Adjustments Gain (Loss) [Abstract]
Fair value funding valuation adjustment				$499

FAIR_VALUE_MEASUREMENT_Items_M

FAIR VALUE MEASUREMENT - Items Measured at Fair Value on a Recurring Basis (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell, Netting	($56,339,000,000)	($43,245,000,000)
Trading account assets	296,786,000,000	285,928,000,000
Netting of cash collateral received	-47,625,000,000	-34,893,000,000
Investments	333,443,000,000	308,980,000,000
Loans	5,901,000,000	5,029,000,000
Mortgage servicing rights (MSRs)	1,845,000,000	2,718,000,000
Liabilities, Fair Value Disclosure [Abstract]
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Netting	-56,339,000,000	-43,245,000,000
Netting of cash collateral paid	-47,769,000,000	-39,094,000,000
Assets transferred from Level 1 to Level 2	4,100,000,000	2,500,000,000
Assets transferred from Level 2 to Level 1	4,200,000,000	49,300,000,000
Liabilities transferred from Level 1 to Level 2	1,400,000,000
Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	27,053,000,000	23,955,000,000
Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,343,000,000	2,574,000,000
Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	36,234,000,000	30,606,000,000
U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	20,474,000,000	14,837,000,000
State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,402,000,000	3,207,000,000
Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	66,274,000,000	74,856,000,000
Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	26,460,000,000	30,534,000,000
Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	57,846,000,000	61,776,000,000
Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,546,000,000	5,616,000,000
Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	13,593,000,000	11,675,000,000
Recurring
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	191,320,000,000	176,414,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell, Netting	-47,129,000,000	-32,331,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell	144,191,000,000	144,083,000,000
Investments	302,901,000,000	291,216,000,000
Loans	5,901,000,000	5,029,000,000
Mortgage servicing rights (MSRs)	1,845,000,000	2,718,000,000
Assets before netting	1,633,109,000,000	1,519,870,000,000
Total assets, Netting	-873,723,000,000	-783,773,000,000
Total assets	759,386,000,000	736,097,000,000
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	1,684,000,000	1,677,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	83,854,000,000	86,478,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Netting	-47,129,000,000	-32,331,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase	36,725,000,000	54,147,000,000
Securities sold, not yet purchased	70,944,000,000	61,508,000,000
Short-term borrowings	1,496,000,000	3,692,000,000
Long-term debt, at fair value	26,180,000,000	26,877,000,000
Total liabilities, Gross	1,078,988,000,000	982,189,000,000
Total liabilities, Netting	-872,091,000,000	-785,023,000,000
Total liabilities	206,897,000,000	197,166,000,000
Recurring | Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	883,193,000,000	791,119,000,000
Cash collateral received	9,846,000,000	8,827,000,000
Total trading derivatives and cash collateral, liability	893,039,000,000	799,946,000,000
Netting agreements	-777,178,000,000	-713,598,000,000
Netting of cash collateral paid	-47,769,000,000	-39,094,000,000
Netting, Liabilities, total of netting agreements and cash collateral received	-824,947,000,000	-752,692,000,000
Total derivative liabilities	68,092,000,000	47,254,000,000
Cash collateral received, gross	57,471,000,000	43,720,000,000
Recurring | Trading derivatives liabilities | Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	622,282,000,000	617,226,000,000
Recurring | Trading derivatives liabilities | Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	158,826,000,000	88,637,000,000
Recurring | Trading derivatives liabilities | Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	32,469,000,000	34,292,000,000
Recurring | Trading derivatives liabilities | Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	26,186,000,000	10,170,000,000
Recurring | Trading derivatives liabilities | Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	43,430,000,000	40,794,000,000
Recurring | Non-trading derivatives and other financial liabilities
Assets, Fair Value Disclosure [Abstract]
Netting of cash collateral received		-2,951,000,000
Cash collateral paid, gross	138,000,000
Liabilities, Fair Value Disclosure [Abstract]
Cash collateral received	7,000,000	282,000,000
Netting of cash collateral paid	-15,000,000
Netting, Liabilities, total of netting agreements and cash collateral received	-15,000,000
Other liabilities, gross	1,784,000,000	1,729,000,000
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross	1,791,000,000	2,011,000,000
Total other assets and cash collateral, gross	1,776,000,000	2,011,000,000
Cash collateral received, gross	1,798,000,000	3,233,000,000
Recurring | Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	27,053,000,000	23,955,000,000
Investments	36,091,000,000	41,997,000,000
Recurring | Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,838,000,000	4,077,000,000
Investments	8,363,000,000	10,205,000,000
Recurring | Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,343,000,000	2,574,000,000
Investments	554,000,000	453,000,000
Recurring | Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	36,234,000,000	30,606,000,000
Investments	45,008,000,000	52,655,000,000
Recurring | U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	20,474,000,000	14,837,000,000
Investments	123,690,000,000	87,596,000,000
Recurring | State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,402,000,000	3,207,000,000
Investments	12,699,000,000	18,940,000,000
Recurring | Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	66,274,000,000	74,856,000,000
Investments	90,697,000,000	96,471,000,000
Recurring | Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	26,460,000,000	30,534,000,000
Investments	12,157,000,000	11,130,000,000
Recurring | Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	57,846,000,000	61,776,000,000
Investments	2,725,000,000	3,734,000,000
Recurring | Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,546,000,000	5,616,000,000
Investments	12,506,000,000	15,274,000,000
Recurring | Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	13,593,000,000	11,675,000,000
Investments	661,000,000	711,000,000
Recurring | Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	2,758,000,000	4,705,000,000
Recurring | Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	886,237,000,000	795,239,000,000
Gross cash collateral paid	6,523,000,000	6,073,000,000
Trading derivative, asset, gross net cash collateral paid	892,760,000,000	801,312,000,000
Less: Netting agreements to assets	-777,178,000,000	-713,598,000,000
Netting of cash collateral received	-47,625,000,000	-34,893,000,000
Netting, Assets, total of netting agreements and cash collateral received	-824,803,000,000	-748,491,000,000
Trading derivatives	67,957,000,000	52,821,000,000
Cash collateral paid, gross	54,292,000,000	45,167,000,000
Recurring | Trading account assets | Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	638,453,000,000	628,380,000,000
Recurring | Trading account assets | Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	155,994,000,000	92,554,000,000
Recurring | Trading account assets | Equity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	24,752,000,000	24,877,000,000
Recurring | Trading account assets | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	23,520,000,000	9,082,000,000
Recurring | Trading account assets | Credit derivatives
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	43,518,000,000	40,346,000,000
Recurring | Non-trading derivatives and other financial assets
Assets, Fair Value Disclosure [Abstract]
Netting of cash collateral received	-1,791,000,000	-2,951,000,000
Netting, Assets, total of netting agreements and cash collateral received	-1,791,000,000	-2,951,000,000
Other assets, gross	9,430,000,000	9,992,000,000
Cash collateral paid, gross	123,000,000	82,000,000
Total other assets and cash collateral, gross	9,553,000,000	10,074,000,000
Other assets	7,762,000,000	7,123,000,000
Recurring | Trading securities (excluding trading account derivatives)
Assets, Fair Value Disclosure [Abstract]
Trading account assets	228,829,000,000	233,107,000,000
Recurring | Level 1
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	0	0
Investments	151,499,000,000	106,905,000,000
Loans	0	0
Mortgage servicing rights (MSRs)	0	0
Assets before netting	261,637,000,000	233,316,000,000
Total as a percentage of gross assets	16.10%	15.40%
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	0	0
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	0	0
Securities sold, not yet purchased	59,463,000,000	51,035,000,000
Short-term borrowings	0	0
Long-term debt, at fair value	0	0
Total liabilities, Gross	63,164,000,000	57,222,000,000
Total as a percentage of gross liabilities	5.90%	5.90%
Recurring | Level 1 | Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	3,701,000,000	6,187,000,000
Recurring | Level 1 | Trading derivatives liabilities | Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	77,000,000	12,000,000
Recurring | Level 1 | Trading derivatives liabilities | Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	0	29,000,000
Recurring | Level 1 | Trading derivatives liabilities | Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	2,955,000,000	5,783,000,000
Recurring | Level 1 | Trading derivatives liabilities | Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	669,000,000	363,000,000
Recurring | Level 1 | Trading derivatives liabilities | Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	0	0
Recurring | Level 1 | Non-trading derivatives and other financial liabilities
Liabilities, Fair Value Disclosure [Abstract]
Other liabilities, gross	0	0
Recurring | Level 1 | Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	0	0
Recurring | Level 1 | Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	0	0
Recurring | Level 1 | Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	0	0
Other assets, gross		0
Recurring | Level 1 | Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	0	0
Recurring | Level 1 | U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	15,991,000,000	12,080,000,000
Investments	110,710,000,000	69,139,000,000
Recurring | Level 1 | State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	0	0
Recurring | Level 1 | Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	39,332,000,000	49,220,000,000
Investments	39,014,000,000	35,179,000,000
Recurring | Level 1 | Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	5,000,000	4,000,000
Recurring | Level 1 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	51,346,000,000	58,761,000,000
Investments	1,770,000,000	2,583,000,000
Recurring | Level 1 | Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	0	0
Recurring | Level 1 | Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	0	0
Recurring | Level 1 | Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	0	0
Recurring | Level 1 | Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	3,469,000,000	6,350,000,000
Recurring | Level 1 | Trading account assets | Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	74,000,000	11,000,000
Recurring | Level 1 | Trading account assets | Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	0	40,000,000
Recurring | Level 1 | Trading account assets | Equity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	2,748,000,000	5,793,000,000
Recurring | Level 1 | Trading account assets | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	647,000,000	506,000,000
Recurring | Level 1 | Trading account assets | Credit derivatives
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	0	0
Recurring | Level 1 | Non-trading derivatives and other financial assets
Assets, Fair Value Disclosure [Abstract]
Other assets, gross	0	0
Recurring | Level 1 | Trading securities (excluding trading account derivatives)
Assets, Fair Value Disclosure [Abstract]
Trading account assets	106,669,000,000	120,061,000,000
Recurring | Level 2
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	187,922,000,000	172,848,000,000
Investments	144,064,000,000	174,570,000,000
Loans	2,793,000,000	886,000,000
Mortgage servicing rights (MSRs)	0	0
Assets before netting	1,322,433,000,000	1,234,714,000,000
Total as a percentage of gross assets	81.30%	81.60%
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	1,198,000,000	787,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	82,811,000,000	85,576,000,000
Securities sold, not yet purchased	11,057,000,000	9,883,000,000
Short-term borrowings	1,152,000,000	3,663,000,000
Long-term debt, at fair value	18,890,000,000	19,256,000,000
Total liabilities, Gross	982,447,000,000	894,749,000,000
Total as a percentage of gross liabilities	91.90%	92.00%
Recurring | Level 2 | Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	865,562,000,000	773,865,000,000
Recurring | Level 2 | Trading derivatives liabilities | Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	617,933,000,000	614,586,000,000
Recurring | Level 2 | Trading derivatives liabilities | Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	158,354,000,000	87,978,000,000
Recurring | Level 2 | Trading derivatives liabilities | Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	26,616,000,000	26,178,000,000
Recurring | Level 2 | Trading derivatives liabilities | Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	22,872,000,000	7,613,000,000
Recurring | Level 2 | Trading derivatives liabilities | Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	39,787,000,000	37,510,000,000
Recurring | Level 2 | Non-trading derivatives and other financial liabilities
Liabilities, Fair Value Disclosure [Abstract]
Other liabilities, gross	1,777,000,000	1,719,000,000
Recurring | Level 2 | Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	25,968,000,000	22,861,000,000
Investments	36,053,000,000	41,810,000,000
Recurring | Level 2 | Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	2,158,000,000	1,223,000,000
Investments	8,355,000,000	10,103,000,000
Recurring | Level 2 | Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,903,000,000	2,318,000,000
Investments	553,000,000	453,000,000
Recurring | Level 2 | Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	32,029,000,000	26,402,000,000
Investments	44,961,000,000	52,366,000,000
Recurring | Level 2 | U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,483,000,000	2,757,000,000
Investments	12,974,000,000	18,449,000,000
Recurring | Level 2 | State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,161,000,000	2,985,000,000
Investments	10,519,000,000	17,297,000,000
Recurring | Level 2 | Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	26,736,000,000	25,220,000,000
Investments	51,005,000,000	60,948,000,000
Recurring | Level 2 | Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	25,640,000,000	28,699,000,000
Investments	11,480,000,000	10,841,000,000
Recurring | Level 2 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,281,000,000	1,958,000,000
Investments	274,000,000	336,000,000
Recurring | Level 2 | Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	1,252,000,000	1,274,000,000
Investments	11,957,000,000	13,314,000,000
Recurring | Level 2 | Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	9,221,000,000	8,491,000,000
Investments	661,000,000	661,000,000
Recurring | Level 2 | Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	233,000,000	358,000,000
Recurring | Level 2 | Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	871,499,000,000	778,813,000,000
Recurring | Level 2 | Trading account assets | Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	634,318,000,000	624,902,000,000
Recurring | Level 2 | Trading account assets | Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	154,744,000,000	91,189,000,000
Recurring | Level 2 | Trading account assets | Equity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	19,969,000,000	17,611,000,000
Recurring | Level 2 | Trading account assets | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	21,850,000,000	7,775,000,000
Recurring | Level 2 | Trading account assets | Credit derivatives
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	40,618,000,000	37,336,000,000
Recurring | Level 2 | Non-trading derivatives and other financial assets
Assets, Fair Value Disclosure [Abstract]
Other assets, gross	9,352,000,000	9,811,000,000
Recurring | Level 2 | Trading securities (excluding trading account derivatives)
Assets, Fair Value Disclosure [Abstract]
Trading account assets	106,803,000,000	97,786,000,000
Recurring | Level 3
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	3,398,000,000	3,566,000,000
Investments	7,338,000,000	9,741,000,000
Loans	3,108,000,000	4,143,000,000
Mortgage servicing rights (MSRs)	1,845,000,000	2,718,000,000
Assets before netting	42,393,000,000	45,685,000,000
Total as a percentage of gross assets	2.60%	3.00%
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	486,000,000	890,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	1,043,000,000	902,000,000
Securities sold, not yet purchased	424,000,000	590,000,000
Short-term borrowings	344,000,000	29,000,000
Long-term debt, at fair value	7,290,000,000	7,621,000,000
Total liabilities, Gross	23,524,000,000	21,109,000,000
Total as a percentage of gross liabilities	2.20%	2.20%
Recurring | Level 3 | Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	13,930,000,000	11,067,000,000
Recurring | Level 3 | Trading derivatives liabilities | Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	4,272,000,000	2,628,000,000
Recurring | Level 3 | Trading derivatives liabilities | Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	472,000,000	630,000,000
Recurring | Level 3 | Trading derivatives liabilities | Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	2,898,000,000	2,331,000,000
Recurring | Level 3 | Trading derivatives liabilities | Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	2,645,000,000	2,194,000,000
Recurring | Level 3 | Trading derivatives liabilities | Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	3,643,000,000	3,284,000,000
Recurring | Level 3 | Non-trading derivatives and other financial liabilities
Liabilities, Fair Value Disclosure [Abstract]
Other liabilities, gross	7,000,000	10,000,000
Recurring | Level 3 | Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	1,085,000,000	1,094,000,000
Investments	38,000,000	187,000,000
Recurring | Level 3 | Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	2,680,000,000	2,854,000,000
Investments	8,000,000	102,000,000
Recurring | Level 3 | Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	440,000,000	256,000,000
Investments	1,000,000	0
Recurring | Level 3 | Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,205,000,000	4,204,000,000
Investments	47,000,000	289,000,000
Recurring | Level 3 | U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0
Investments	6,000,000	8,000,000
Recurring | Level 3 | State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	241,000,000	222,000,000
Investments	2,180,000,000	1,643,000,000
Recurring | Level 3 | Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	206,000,000	416,000,000
Investments	678,000,000	344,000,000
Recurring | Level 3 | Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	820,000,000	1,835,000,000
Investments	672,000,000	285,000,000
Recurring | Level 3 | Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	2,219,000,000	1,057,000,000
Investments	681,000,000	815,000,000
Recurring | Level 3 | Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,294,000,000	4,342,000,000
Investments	549,000,000	1,960,000,000
Recurring | Level 3 | Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,372,000,000	3,184,000,000
Investments	0	50,000,000
Recurring | Level 3 | Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	2,525,000,000	4,347,000,000
Recurring | Level 3 | Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	11,269,000,000	10,076,000,000
Recurring | Level 3 | Trading account assets | Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	4,061,000,000	3,467,000,000
Recurring | Level 3 | Trading account assets | Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	1,250,000,000	1,325,000,000
Recurring | Level 3 | Trading account assets | Equity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	2,035,000,000	1,473,000,000
Recurring | Level 3 | Trading account assets | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	1,023,000,000	801,000,000
Recurring | Level 3 | Trading account assets | Credit derivatives
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	2,900,000,000	3,010,000,000
Recurring | Level 3 | Non-trading derivatives and other financial assets
Assets, Fair Value Disclosure [Abstract]
Other assets, gross	78,000,000	181,000,000
Recurring | Level 3 | Trading securities (excluding trading account derivatives)
Assets, Fair Value Disclosure [Abstract]
Trading account assets	$15,357,000,000	$15,260,000,000

FAIR_VALUE_MEASUREMENT_Level_3

FAIR VALUE MEASUREMENT - Level 3 Roll Forward (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Trading account assets and liabilities
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	($991)	($2,380)
Transfers into Level 3	-749	852
Transfers out of Level 3	461	-676
Purchases	710	587
Sales	-503	-339
Settlements	-440	484
Balance at end of period, asset (liability), net	-2,661	-991
Unrealized gains (losses) still held	-1,175	-318
Trading account assets and liabilities | Principal transactions
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings	-1,149	481
Trading account assets and liabilities | Interest rate contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	839	181
Transfers into Level 3	24	692
Transfers out of Level 3	-98	-226
Purchases	113	228
Sales	-162	-155
Settlements	-109	-173
Balance at end of period, asset (liability), net	-211	839
Unrealized gains (losses) still held	-414	779
Trading account assets and liabilities | Interest rate contracts | Principal transactions
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings	-818	292
Trading account assets and liabilities | Foreign exchange contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	695	0
Transfers into Level 3	47	29
Transfers out of Level 3	-39	-35
Purchases	59	26
Sales	-59	-10
Settlements	-17	60
Balance at end of period, asset (liability), net	778	695
Unrealized gains (losses) still held	56	146
Trading account assets and liabilities | Foreign exchange contracts | Principal transactions
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings	92	625
Trading account assets and liabilities | Equity contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	-858	-1,448
Transfers into Level 3	-916	25
Transfers out of Level 3	766	295
Purchases	435	298
Sales	-279	-149
Settlements	-493	25
Balance at end of period, asset (liability), net	-863	-858
Unrealized gains (losses) still held	-274	-453
Trading account assets and liabilities | Equity contracts | Principal transactions
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings	482	96
Trading account assets and liabilities | Commodity contracts
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	-1,393	-771
Transfers into Level 3	92	0
Transfers out of Level 3	-12	-527
Purchases	0	15
Sales	0	-25
Settlements	29	79
Balance at end of period, asset (liability), net	-1,622	-1,393
Unrealized gains (losses) still held	-174	-246
Trading account assets and liabilities | Commodity contracts | Principal transactions
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings	-338	-164
Trading account assets and liabilities | Credit derivatives
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset (liability), net	-274	-342
Transfers into Level 3	4	106
Transfers out of Level 3	-156	-183
Purchases	103	20
Sales	-3	0
Settlements	150	493
Balance at end of period, asset (liability), net	-743	-274
Unrealized gains (losses) still held	-369	-544
Trading account assets and liabilities | Credit derivatives | Principal transactions
Fair value, Derivative assets (liabilities) measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings	-567	-368
Interest-bearing deposits
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	890	786
Transfers into Level 3, liabilities	5	32
Transfers out of Level 3, liabilities	-12	-21
Purchases, liability	0	0
Issuance, liability	127	86
Sales, liability	0	0
Settlements, liability	-167	-118
Balance at end of period, liability	486	890
Unrealized gains (losses) still held, liabilities	-69	-41
Interest-bearing deposits | Principal transactions
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings, liabilities	0	0
Interest-bearing deposits | Other
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	357	-125
Federal funds purchased and securities loaned or sold under agreements to repurchase
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	902	841
Transfers into Level 3, liabilities	54	216
Transfers out of Level 3, liabilities	0	-17
Purchases, liability	78	36
Issuance, liability	0	0
Sales, liability	220	40
Settlements, liability	-217	-123
Balance at end of period, liability	1,043	902
Unrealized gains (losses) still held, liabilities	-34	50
Federal funds purchased and securities loaned or sold under agreements to repurchase | Principal transactions
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings, liabilities	-6	91
Federal funds purchased and securities loaned or sold under agreements to repurchase | Other
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	0	0
Trading account liabilities | Securities sold, not yet purchased
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	590	365
Transfers into Level 3, liabilities	79	89
Transfers out of Level 3, liabilities	-111	-52
Purchases, liability	0	0
Issuance, liability	0	0
Sales, liability	534	612
Settlements, liability	-749	-382
Balance at end of period, liability	424	590
Unrealized gains (losses) still held, liabilities	-58	73
Trading account liabilities | Securities sold, not yet purchased | Principal transactions
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings, liabilities	-81	42
Trading account liabilities | Securities sold, not yet purchased | Other
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	0	0
Short-term borrowings
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	29	112
Transfers into Level 3, liabilities	323	2
Transfers out of Level 3, liabilities	-12	-10
Purchases, liability	0	0
Issuance, liability	49	316
Sales, liability	0	0
Settlements, liability	-76	-338
Balance at end of period, liability	344	29
Unrealized gains (losses) still held, liabilities	-8	-5
Short-term borrowings | Principal transactions
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings, liabilities	-31	53
Short-term borrowings | Other
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	0	0
Long-term debt
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	7,621	6,726
Transfers into Level 3, liabilities	2,701	3,738
Transfers out of Level 3, liabilities	-4,206	-2,531
Purchases, liability	0	0
Issuance, liability	3,893	1,466
Sales, liability	0	-1
Settlements, liability	-2,561	-1,332
Balance at end of period, liability	7,290	7,621
Unrealized gains (losses) still held, liabilities	-446	758
Long-term debt | Principal transactions
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings, liabilities	109	292
Long-term debt | Other
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	49	153
Long-term debt | Commodity contracts
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Transfers into Level 3, liabilities		1,300
Other financial liabilities
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, liability	10	24
Transfers into Level 3, liabilities	5	5
Transfers out of Level 3, liabilities	-3	-2
Purchases, liability	0	-5
Issuance, liability	1	104
Sales, liability	-3	0
Settlements, liability	-8	-331
Balance at end of period, liability	7	10
Unrealized gains (losses) still held, liabilities	-4	-9
Other financial liabilities | Principal transactions
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in earnings, liabilities	0	0
Other financial liabilities | Other
Fair value, liabilities measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities	-5	-215
Federal funds sold and securities borrowed or purchased under agreements to resell
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	3,566	5,043
Transfers into Level 3	84	627
Transfers out of Level 3, assets	-8	-1,871
Purchases, assets	75	59
Issuance, assets	0	0
Sales, assets	0	71
Settlements, assets	-258	-226
Balance at end of period, asset	3,398	3,566
Unrealized gains (losses) still held, assets	133	-124
Federal funds sold and securities borrowed or purchased under agreements to resell | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	-61	-137
Federal funds sold and securities borrowed or purchased under agreements to resell | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	15,260	13,823
Transfers into Level 3	5,165	4,175
Transfers out of Level 3, assets	-5,535	-4,625
Purchases, assets	17,478	18,360
Issuance, assets	26	68
Sales, assets	-18,292	-16,276
Settlements, assets	-398	-1,864
Balance at end of period, asset	15,357	15,260
Unrealized gains (losses) still held, assets	374	-135
Trading non-derivative assets | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	1,653	1,599
Trading non-derivative assets | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | U.S. government-sponsored agency guaranteed
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1,094	1,325
Transfers into Level 3	854	1,386
Transfers out of Level 3, assets	-966	-1,477
Purchases, assets	714	1,316
Issuance, assets	26	68
Sales, assets	-695	-1,310
Settlements, assets	-59	-355
Balance at end of period, asset	1,085	1,094
Unrealized gains (losses) still held, assets	8	52
Trading non-derivative assets | U.S. government-sponsored agency guaranteed | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	117	141
Trading non-derivative assets | U.S. government-sponsored agency guaranteed | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Mortgage-backed securities - Residential
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	2,854	1,805
Transfers into Level 3	442	513
Transfers out of Level 3, assets	-514	-372
Purchases, assets	2,582	3,630
Issuance, assets	0	0
Sales, assets	-3,141	-3,189
Settlements, assets	0	-7
Balance at end of period, asset	2,680	2,854
Unrealized gains (losses) still held, assets	132	10
Trading non-derivative assets | Mortgage-backed securities - Residential | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	457	474
Trading non-derivative assets | Mortgage-backed securities - Residential | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Mortgage-backed securities - Commercial
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	256	1,119
Transfers into Level 3	187	278
Transfers out of Level 3, assets	-376	-304
Purchases, assets	758	244
Issuance, assets	0	0
Sales, assets	-402	-1,178
Settlements, assets	0	-17
Balance at end of period, asset	440	256
Unrealized gains (losses) still held, assets	-4	14
Trading non-derivative assets | Mortgage-backed securities - Commercial | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	17	114
Trading non-derivative assets | Mortgage-backed securities - Commercial | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Mortgage-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	4,204	4,249
Transfers into Level 3	1,483	2,177
Transfers out of Level 3, assets	-1,856	-2,153
Purchases, assets	4,054	5,190
Issuance, assets	26	68
Sales, assets	-4,238	-5,677
Settlements, assets	-59	-379
Balance at end of period, asset	4,205	4,204
Unrealized gains (losses) still held, assets	136	76
Trading non-derivative assets | Mortgage-backed securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	591	729
Trading non-derivative assets | Mortgage-backed securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | U.S. Treasury and federal agency securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	0	0
Transfers into Level 3	0	54
Transfers out of Level 3, assets	0	0
Purchases, assets	7	0
Issuance, assets	0	0
Sales, assets	-10	-53
Settlements, assets	0	0
Balance at end of period, asset	0	0
Unrealized gains (losses) still held, assets	0	0
Trading non-derivative assets | U.S. Treasury and federal agency securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	3	-1
Trading non-derivative assets | U.S. Treasury and federal agency securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0
Trading non-derivative assets | State and municipal securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	222	195
Transfers into Level 3	150	9
Transfers out of Level 3, assets	-105	0
Purchases, assets	34	107
Issuance, assets	0	0
Sales, assets	-70	-126
Settlements, assets	0	0
Balance at end of period, asset	241	222
Unrealized gains (losses) still held, assets	1	15
Trading non-derivative assets | State and municipal securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	10	37
Trading non-derivative assets | State and municipal securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Foreign government
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	416	311
Transfers into Level 3	130	156
Transfers out of Level 3, assets	-253	-67
Purchases, assets	676	326
Issuance, assets	0	0
Sales, assets	-707	-289
Settlements, assets	0	0
Balance at end of period, asset	206	416
Unrealized gains (losses) still held, assets	5	5
Trading non-derivative assets | Foreign government | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	-56	-21
Trading non-derivative assets | Foreign government | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Corporate
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1,835	2,030
Transfers into Level 3	465	410
Transfers out of Level 3, assets	-502	-410
Purchases, assets	1,988	2,864
Issuance, assets	0	0
Sales, assets	-2,839	-2,116
Settlements, assets	0	-923
Balance at end of period, asset	820	1,835
Unrealized gains (losses) still held, assets	-139	-406
Trading non-derivative assets | Corporate | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	-127	-20
Trading non-derivative assets | Corporate | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1,057	264
Transfers into Level 3	142	228
Transfers out of Level 3, assets	-209	-210
Purchases, assets	1,437	829
Issuance, assets	0	0
Sales, assets	-295	-183
Settlements, assets	0	0
Balance at end of period, asset	2,219	1,057
Unrealized gains (losses) still held, assets	337	59
Trading non-derivative assets | Equity securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	87	129
Trading non-derivative assets | Equity securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Asset-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	4,342	4,453
Transfers into Level 3	158	181
Transfers out of Level 3, assets	-332	-193
Purchases, assets	3,893	5,165
Issuance, assets	0	0
Sales, assets	-5,643	-5,579
Settlements, assets	0	-229
Balance at end of period, asset	3,294	4,342
Unrealized gains (losses) still held, assets	3	123
Trading non-derivative assets | Asset-backed securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	876	544
Trading non-derivative assets | Asset-backed securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Trading non-derivative assets | Other debt securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	3,184	2,321
Transfers into Level 3	2,637	960
Transfers out of Level 3, assets	-2,278	-1,592
Purchases, assets	5,427	3,879
Issuance, assets	0	0
Sales, assets	-4,490	-2,253
Settlements, assets	-377	-333
Balance at end of period, asset	4,372	3,184
Unrealized gains (losses) still held, assets	31	-7
Trading non-derivative assets | Other debt securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	269	202
Trading non-derivative assets | Other debt securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Investments
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	9,741	11,907
Transfers into Level 3	1,304	3,857
Transfers out of Level 3, assets	-1,110	-6,493
Purchases, assets	3,371	4,847
Issuance, assets	0	0
Sales, assets	-2,857	-1,858
Settlements, assets	-3,338	-2,949
Balance at end of period, asset	7,338	9,741
Unrealized gains (losses) still held, assets	5	203
Investments | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	227	430
Investments | U.S. government-sponsored agency guaranteed
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	187	1,458
Transfers into Level 3	60	2,058
Transfers out of Level 3, assets	-203	-3,820
Purchases, assets	17	593
Issuance, assets	0	0
Sales, assets	-73	-38
Settlements, assets	-2	-57
Balance at end of period, asset	38	187
Unrealized gains (losses) still held, assets	-8	11
Investments | U.S. government-sponsored agency guaranteed | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | U.S. government-sponsored agency guaranteed | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	52	-7
Investments | Mortgage-backed securities - Residential
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	102	205
Transfers into Level 3	31	60
Transfers out of Level 3, assets	-2	-265
Purchases, assets	17	212
Issuance, assets	0	0
Sales, assets	-173	-140
Settlements, assets	0	0
Balance at end of period, asset	8	102
Unrealized gains (losses) still held, assets	0	7
Investments | Mortgage-backed securities - Residential | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Mortgage-backed securities - Residential | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	33	30
Investments | Mortgage-backed securities - Commercial
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	0	0
Transfers into Level 3	4	4
Transfers out of Level 3, assets	-7	-21
Purchases, assets	10	17
Issuance, assets	0	0
Sales, assets	0	0
Settlements, assets	0	0
Balance at end of period, asset	1	0
Unrealized gains (losses) still held, assets	0	0
Investments | Mortgage-backed securities - Commercial | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Mortgage-backed securities - Commercial | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	-6	0
Investments | Mortgage-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	289	1,663
Transfers into Level 3	95	2,122
Transfers out of Level 3, assets	-212	-4,106
Purchases, assets	44	822
Issuance, assets	0	0
Sales, assets	-246	-178
Settlements, assets	-2	-57
Balance at end of period, asset	47	289
Unrealized gains (losses) still held, assets	-8	18
Investments | Mortgage-backed securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Mortgage-backed securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	79	23
Investments | U.S. Treasury and federal agency securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	8	12
Transfers into Level 3	0	0
Transfers out of Level 3, assets	0	0
Purchases, assets	0	0
Issuance, assets	0	0
Sales, assets	-2	-4
Settlements, assets	0	0
Balance at end of period, asset	6	8
Unrealized gains (losses) still held, assets	0	0
Investments | U.S. Treasury and federal agency securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | U.S. Treasury and federal agency securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	0	0
Investments | State and municipal securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1,643	849
Transfers into Level 3	811	12
Transfers out of Level 3, assets	-584	-122
Purchases, assets	923	1,236
Issuance, assets	0	0
Sales, assets	-549	-217
Settlements, assets	0	-125
Balance at end of period, asset	2,180	1,643
Unrealized gains (losses) still held, assets	49	-75
Investments | State and municipal securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | State and municipal securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	-64	10
Investments | Foreign government
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	344	383
Transfers into Level 3	286	178
Transfers out of Level 3, assets	-105	-256
Purchases, assets	851	506
Issuance, assets	0	0
Sales, assets	-490	-391
Settlements, assets	-181	-78
Balance at end of period, asset	678	344
Unrealized gains (losses) still held, assets	-17	-28
Investments | Foreign government | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Foreign government | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	-27	2
Investments | Corporate
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	285	385
Transfers into Level 3	26	334
Transfers out of Level 3, assets	-143	-119
Purchases, assets	728	104
Issuance, assets	0	0
Sales, assets	-218	-303
Settlements, assets	0	-89
Balance at end of period, asset	672	285
Unrealized gains (losses) still held, assets	-4	0
Investments | Corporate | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Corporate | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	-6	-27
Investments | Equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	815	773
Transfers into Level 3	19	19
Transfers out of Level 3, assets	-19	-1
Purchases, assets	10	1
Issuance, assets	0	0
Sales, assets	-255	-33
Settlements, assets	0	0
Balance at end of period, asset	681	815
Unrealized gains (losses) still held, assets	-78	47
Investments | Equity securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Equity securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	111	56
Investments | Asset-backed securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	1,960	2,220
Transfers into Level 3	0	1,192
Transfers out of Level 3, assets	-47	-1,684
Purchases, assets	95	1,475
Issuance, assets	0	0
Sales, assets	-195	-337
Settlements, assets	-1,305	-1,023
Balance at end of period, asset	549	1,960
Unrealized gains (losses) still held, assets	-18	0
Investments | Asset-backed securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Asset-backed securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	41	117
Investments | Other debt securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	50	258
Transfers into Level 3	0	0
Transfers out of Level 3, assets	0	-205
Purchases, assets	116	50
Issuance, assets	0	0
Sales, assets	-115	-53
Settlements, assets	-50	0
Balance at end of period, asset	0	50
Unrealized gains (losses) still held, assets	0	0
Investments | Other debt securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Other debt securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	-1	0
Investments | Non-marketable equity securities
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	4,347	5,364
Transfers into Level 3	67	0
Transfers out of Level 3, assets	0	0
Purchases, assets	707	653
Issuance, assets	0	0
Sales, assets	-787	-342
Settlements, assets	-1,903	-1,577
Balance at end of period, asset	2,525	4,347
Unrealized gains (losses) still held, assets	81	241
Investments | Non-marketable equity securities | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Investments | Non-marketable equity securities | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	94	249
Loans
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	4,143	4,931
Transfers into Level 3	92	353
Transfers out of Level 3, assets	6	0
Purchases, assets	951	179
Issuance, assets	197	652
Sales, assets	-895	-192
Settlements, assets	-1,153	-1,756
Balance at end of period, asset	3,108	4,143
Unrealized gains (losses) still held, assets	37	-122
Loans | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Loans | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	-233	-24
Mortgage servicing rights
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	2,718	1,942
Transfers into Level 3	0	0
Transfers out of Level 3, assets	0	0
Purchases, assets	0	0
Issuance, assets	217	634
Sales, assets	-317	-2
Settlements, assets	-383	-411
Balance at end of period, asset	1,845	2,718
Unrealized gains (losses) still held, assets	-390	553
Mortgage servicing rights | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Mortgage servicing rights | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	-390	555
Other financial assets measured on a recurring basis
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Balance at beginning of period, asset	181	2,452
Transfers into Level 3	-83	1
Transfers out of Level 3, assets	0	0
Purchases, assets	3	216
Issuance, assets	164	474
Sales, assets	-10	-2,046
Settlements, assets	-277	-979
Balance at end of period, asset	78	181
Unrealized gains (losses) still held, assets	14	-5
Other financial assets measured on a recurring basis | Principal transactions
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in principal transactions	0	0
Other financial assets measured on a recurring basis | Other
Fair value, assets measured on recurring basis, level 3 fair-value category reconciliation
Net realized/unrealized gains (losses) included in locations other than principal transactions, assets	$100	$63

FAIR_VALUE_MEASUREMENT_Valuati

FAIR VALUE MEASUREMENT - Valuation Techniques and Inputs for Level 3 Fair Value Measurements (Details) (Level 3, USD $)	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Mortgage-backed securities | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	2,874,000,000	2,869,000,000
Mortgage-backed securities | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0	0.1
Mortgage-backed securities | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	127.87	117.78
Mortgage-backed securities | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	81.43	77.6
Mortgage-backed securities | Yield analysis
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	1,117,000,000	1,241,000,000
Mortgage-backed securities | Yield analysis | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	0.01%	0.03%
Mortgage-backed securities | Yield analysis | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	19.91%	21.80%
Mortgage-backed securities | Yield analysis | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	5.89%	8.66%
State and municipal, foreign government, corporate, and other debt securities | Cash flow
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	1,860,000,000	2,014,000,000
State and municipal, foreign government, corporate, and other debt securities | Cash flow | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread	0.25%	0.11%
State and municipal, foreign government, corporate, and other debt securities | Cash flow | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread	6.00%	3.75%
State and municipal, foreign government, corporate, and other debt securities | Cash flow | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread	2.33%	2.13%
State and municipal, foreign government, corporate, and other debt securities | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	5,937,000,000	5,361,000,000
State and municipal, foreign government, corporate, and other debt securities | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0	0
State and municipal, foreign government, corporate, and other debt securities | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	124	126.49
State and municipal, foreign government, corporate, and other debt securities | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	90.62	87.47
Equity securities | Cash flow
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	679,000,000	827,000,000
Equity securities | Cash flow | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	4.00%	4.00%
WAL	0 years 4 days	4 days
Equity securities | Cash flow | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	5.00%	5.00%
WAL	3 years 1 month 22 days	3 years 6 months 18 days
Equity securities | Cash flow | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	4.50%	4.50%
WAL	1 year 26 days	1 year 4 months 17 days
Equity securities | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	2,163,000,000	947,000,000
Equity securities | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0	0.31
Equity securities | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	141	93.66
Equity securities | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	91	86.9
Asset-backed securities | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets		1,300,000,000
Asset-backed securities | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		0.25%
Asset-backed securities | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		3.78%
Asset-backed securities | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		3.02%
Asset-backed securities | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	3,607,000,000	4,539,000,000
Asset-backed securities | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0	0
Asset-backed securities | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	105.5	135.83
Asset-backed securities | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	67.01	70.89
Non-marketable equity securities | Cash flow
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets		533,000,000
Non-marketable equity securities | Cash flow | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Discount to price (as a percent)		0.00%
Price-earnings ratio		9.1
Price-to-book ratio		0.9
Non-marketable equity securities | Cash flow | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Discount to price (as a percent)		75.00%
Price-earnings ratio		9.1
Price-to-book ratio		1.05
Non-marketable equity securities | Cash flow | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Discount to price (as a percent)		3.47%
Price-earnings ratio		9.1
Price-to-book ratio		1.02
Non-marketable equity securities | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	1,224,000,000	2,324,000,000
Non-marketable equity securities | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Discount to price (as a percent)	0.00%
Fund NAV		612
Non-marketable equity securities | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Discount to price (as a percent)	90.00%
Fund NAV		336,559,340
Non-marketable equity securities | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Discount to price (as a percent)	4.04%
Fund NAV		124,080,454
Non-marketable equity securities | Comparables Analysis
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	1,055,000,000	1,470,000,000
Non-marketable equity securities | Comparables Analysis | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
EBITDA multiples	2.9	4.2
Price-earnings ratio	8.1
Price-to-book ratio	0.99
Fund NAV	1
Non-marketable equity securities | Comparables Analysis | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
EBITDA multiples	13.1	16.9
Price-earnings ratio	13.1
Price-to-book ratio	1.56
Fund NAV	64,668,171
Non-marketable equity securities | Comparables Analysis | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
EBITDA multiples	9.77	9.78
Price-earnings ratio	8.43
Price-to-book ratio	1.15
Fund NAV	29,975,777
Trading account assets and liabilities | Interest rate contracts | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	8,309,000,000	5,721,000,000
Trading account assets and liabilities | Interest rate contracts | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
IR lognormal volatility	18.05%	10.60%
Mean reversion	1.00%
Trading account assets and liabilities | Interest rate contracts | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
IR lognormal volatility	90.65%	87.20%
Mean reversion	20.00%
Trading account assets and liabilities | Interest rate contracts | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
IR lognormal volatility	30.21%	21.16%
Mean reversion	10.50%
Trading account assets and liabilities | Foreign exchange contracts | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	1,428,000,000	1,727,000,000
Trading account assets and liabilities | Foreign exchange contracts | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Foreign exchange (FX) volatility (as a Percent)	0.37%	1.00%
Trading account assets and liabilities | Foreign exchange contracts | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Foreign exchange (FX) volatility (as a Percent)	58.40%	28.00%
Trading account assets and liabilities | Foreign exchange contracts | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Foreign exchange (FX) volatility (as a Percent)	8.57%	13.45%
Trading account assets and liabilities | Foreign exchange contracts | Cash flow
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	294,000,000	189,000,000
Trading account assets and liabilities | Foreign exchange contracts | Cash flow | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	3.72%	0.11%
Credit spread		0.25%
IR-FX correlation	40.00%	40.00%
IR-IR correlation		40.00%
Trading account assets and liabilities | Foreign exchange contracts | Cash flow | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	8.27%	13.88%
Credit spread		4.19%
IR-FX correlation	60.00%	60.00%
IR-IR correlation		68.79%
Trading account assets and liabilities | Foreign exchange contracts | Cash flow | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	5.02%	6.02%
Credit spread		1.62%
IR-FX correlation	50.00%	50.00%
IR-IR correlation		40.52%
Trading account assets and liabilities | Equity contracts | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	4,431,000,000	3,189,000,000
Trading account assets and liabilities | Equity contracts | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Equity volatility	9.56%	10.02%
Trading account assets and liabilities | Equity contracts | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Equity volatility	82.44%	73.48%
Trading account assets and liabilities | Equity contracts | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Equity volatility	24.61%	29.87%
Trading account assets and liabilities | Equity contracts | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	502,000,000	563,000,000
Trading account assets and liabilities | Equity contracts | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0.01	0
Equity forward	84.10%	79.10%
Equity-FX correlation	-88.20%	-70.00%
Equity-Equity correlation	-66.30%	-81.30%
Trading account assets and liabilities | Equity contracts | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	144.5	118.75
Equity forward	100.80%	141.00%
Equity-FX correlation	48.70%	55.00%
Equity-Equity correlation	94.80%	99.40%
Trading account assets and liabilities | Equity contracts | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	93.05	88.1
Equity forward	94.10%	100.24%
Equity-FX correlation	-25.17%	0.60%
Equity-Equity correlation	36.87%	48.45%
Trading account assets and liabilities | Commodity contracts | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	3,606,000,000	2,988,000,000
Trading account assets and liabilities | Commodity contracts | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Commodity volatility (as a percent)	5.00%	4.00%
Commodity correlation	-57.00%	-75.00%
Forward price	35.34%	23.00%
Trading account assets and liabilities | Commodity contracts | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Commodity volatility (as a percent)	83.00%	146.00%
Commodity correlation	91.00%	90.00%
Forward price	268.77%	242.00%
Trading account assets and liabilities | Commodity contracts | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Commodity volatility (as a percent)	24.00%	15.00%
Commodity correlation	30.00%	32.00%
Forward price	101.74%	105.00%
Trading account assets and liabilities | Credit derivatives | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	4,944,000,000	4,767,000,000
Trading account assets and liabilities | Credit derivatives | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Recovery rate (as a percent)	13.97%	20.00%
Trading account assets and liabilities | Credit derivatives | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Recovery rate (as a percent)	75.00%	64.00%
Trading account assets and liabilities | Credit derivatives | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Recovery rate (as a percent)	37.62%	38.11%
Trading account assets and liabilities | Credit derivatives | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	1,584,000,000	1,520,000,000
Trading account assets and liabilities | Credit derivatives | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	1	0.02
Credit spread	0.01%	0.03%
Credit correlation	0.00%	5.00%
Upfront points	0.39	2.31
Trading account assets and liabilities | Credit derivatives | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	144.5	115.2
Credit spread	33.80%	13.35%
Credit correlation	95.00%	95.00%
Upfront points	100	100
Trading account assets and liabilities | Credit derivatives | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	53.86	29.83
Credit spread	1.80%	2.03%
Credit correlation	58.76%	47.43%
Upfront points	52.26	57.69
Nontrading derivatives and other financial assets and liabilities | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	74,000,000	38,000,000
Nontrading derivatives and other financial assets and liabilities | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0.13	0
Discount to price (as a percent)		0.00%
Price-to-book ratio		1.05
Fund NAV		1
Nontrading derivatives and other financial assets and liabilities | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0.995	105.1
Discount to price (as a percent)		35.00%
Price-to-book ratio		1.05
Fund NAV		10,688,600
Nontrading derivatives and other financial assets and liabilities | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0.6873	71.25
Discount to price (as a percent)		16.36%
Price-to-book ratio		1.05
Fund NAV		9,706,488
Nontrading derivatives and other financial assets and liabilities | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)	11,000,000	82,000,000
Nontrading derivatives and other financial assets and liabilities | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
EBITDA multiples		5.2
Fund NAV	12,974
Forward price	107.00%
Nontrading derivatives and other financial assets and liabilities | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
EBITDA multiples		12.6
Fund NAV	10,087,963
Forward price	107.10%
Nontrading derivatives and other financial assets and liabilities | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
EBITDA multiples		12.08
Fund NAV	9,308,012
Forward price	107.05%
Nontrading derivatives and other financial assets and liabilities | Comparables Analysis
Fair Value Inputs Assets Liabilities Quantitative Information
Fair value (gross)		60,000,000
Nontrading derivatives and other financial assets and liabilities | Comparables Analysis | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price-earnings ratio		6.9
Nontrading derivatives and other financial assets and liabilities | Comparables Analysis | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price-earnings ratio		6.9
Nontrading derivatives and other financial assets and liabilities | Comparables Analysis | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price-earnings ratio		6.9
Fixed income securities
Fair Value Inputs Assets Liabilities Quantitative Information
Fair Value Inputs Price for Instrument Valued at Par	100
Interest-bearing deposits | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Liabilities	486,000,000	890,000,000
Interest-bearing deposits | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Mean reversion		1.00%
Equity volatility		14.79%
Commodity volatility (as a percent)	5.00%	4.00%
Commodity correlation	-57.00%	-75.00%
Forward price	35.34%	23.00%
Equity-IR correlation	34.00%	9.00%
Interest-bearing deposits | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Mean reversion		20.00%
Equity volatility		42.15%
Commodity volatility (as a percent)	83.00%	146.00%
Commodity correlation	91.00%	90.00%
Forward price	268.77%	242.00%
Equity-IR correlation	37.00%	20.50%
Interest-bearing deposits | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Mean reversion		10.50%
Equity volatility		27.74%
Commodity volatility (as a percent)	24.00%	15.00%
Commodity correlation	30.00%	32.00%
Forward price	101.74%	105.00%
Equity-IR correlation	35.43%	19.81%
Federal funds purchased and securities loaned or sold under agreements to repurchase | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Liabilities	1,043,000,000	902,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	0.74%	0.47%
Federal funds purchased and securities loaned or sold under agreements to repurchase | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	2.26%	3.66%
Federal funds purchased and securities loaned or sold under agreements to repurchase | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	1.90%	2.71%
Trading account liabilities | Securities sold, not yet purchased | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Liabilities	251,000,000	289,000,000
Trading account liabilities | Securities sold, not yet purchased | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		1.66%
Credit IR correlation	-70.49%
Trading account liabilities | Securities sold, not yet purchased | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		1.80%
Credit IR correlation	8.81%
Trading account liabilities | Securities sold, not yet purchased | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		1.75%
Credit IR correlation	47.17%
Trading account liabilities | Securities sold, not yet purchased | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Liabilities		273,000,000
Trading account liabilities | Securities sold, not yet purchased | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	0	0
Credit IR correlation		-68.00%
Trading account liabilities | Securities sold, not yet purchased | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Liabilities	142,000,000
Price	117	124.25
Credit IR correlation		5.00%
Trading account liabilities | Securities sold, not yet purchased | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	70.33	99.75
Credit IR correlation		-50.00%
Short-term borrowings and long-term debt | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Liabilities	7,204,000,000	6,781,000,000
Short-term borrowings and long-term debt | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit correlation	87.50%
IR lognormal volatility	18.05%	10.60%
Mean reversion	1.00%
Equity volatility	10.18%
Equity forward	89.50%
Commodity volatility (as a percent)	5.00%
Commodity correlation	-57.00%
Forward price	35.34%
Short-term borrowings and long-term debt | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit correlation	87.50%
IR lognormal volatility	90.65%	87.20%
Mean reversion	20.00%
Equity volatility	69.65%
Equity forward	100.80%
Commodity volatility (as a percent)	83.00%
Commodity correlation	91.00%
Forward price	268.77%
Short-term borrowings and long-term debt | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Credit correlation	87.50%
IR lognormal volatility	30.21%	20.97%
Mean reversion	10.50%
Equity volatility	23.72%
Equity forward	95.80%
Commodity volatility (as a percent)	24.00%
Commodity correlation	30.00%
Forward price	101.80%
Short-term borrowings and long-term debt | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Liabilities		868,000,000
Short-term borrowings and long-term debt | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)		4.00%
Price		0.63
Equity volatility		10.70%
Equity forward		79.10%
Equity-FX correlation		-70.00%
Equity-Equity correlation		-81.30%
Forward price		23.00%
Short-term borrowings and long-term debt | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)		10.00%
Price		103.75
Equity volatility		57.20%
Equity forward		141.00%
Equity-FX correlation		55.00%
Equity-Equity correlation		99.40%
Forward price		242.00%
Short-term borrowings and long-term debt | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)		5.00%
Price		80.73
Equity volatility		19.41%
Equity forward		99.51%
Equity-FX correlation		0.60%
Equity-Equity correlation		48.30%
Forward price		101.00%
Federal funds sold and securities borrowed or purchased under agreements to resell | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	3,156,000,000	3,299,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	1.27%	1.33%
Federal funds sold and securities borrowed or purchased under agreements to resell | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	1.97%	2.19%
Federal funds sold and securities borrowed or purchased under agreements to resell | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Interest rate (as a percent)	1.80%	2.04%
Loans | Model-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	832,000,000	1,422,000,000
Loans | Model-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	4.72
Yield (as a percent)		1.60%
Loans | Model-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price	106.55
Yield (as a percent)		4.50%
Loans | Model-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price	98.56
Yield (as a percent)		2.10%
Loans | Cash flow
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	1,095,000,000
Loans | Cash flow | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	1.60%
Loans | Cash flow | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	4.50%
Loans | Cash flow | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	2.23%
Loans | Price-based
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	740,000,000	2,153,000,000
Loans | Price-based | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Price		0
Credit spread	0.35%
Loans | Price-based | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Price		103.75
Credit spread	5.00%
Loans | Price-based | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Price		91.19
Credit spread	1.99%
Loans | Yield analysis
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	441,000,000	549,000,000
Loans | Yield analysis | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		0.49%
Loans | Yield analysis | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		16.00%
Loans | Yield analysis | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Credit spread		3.02%
Mortgage servicing rights | Cash flow
Fair Value Inputs Assets Liabilities Quantitative Information
Total assets	1,750,000,000	2,625,000,000
Mortgage servicing rights | Cash flow | Minimum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	5.19%	3.64%
WAL	3 years 3 months 22 days	2 years 3 months 7 days
Mortgage servicing rights | Cash flow | Maximum
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	21.40%	12.00%
WAL	7 years 10 months 21 days	9 years 5 months 8 days
Mortgage servicing rights | Cash flow | Weighted Average
Fair Value Inputs Assets Liabilities Quantitative Information
Yield (as a percent)	10.25%	7.19%
WAL	5 years 2 months 2 days	6 years 1 month 13 days

FAIR_VALUE_MEASUREMENT_Items_M1

FAIR VALUE MEASUREMENT - Items Measured at Fair Value on a Nonrecurring Basis (Details) (Nonrecurring, USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Level 2
Items Measured at Fair Value on a Nonrecurring Basis
Loans held-for-sale	$1,084	$2,165
Other real estate owned	21	15
Loans	2,881	3,947
Total assets	3,986	6,127
Level 3
Items Measured at Fair Value on a Nonrecurring Basis
Loans held-for-sale	3,068	1,318
Other real estate owned	81	123
Loans	486	766
Total assets	3,635	2,207
Fair value
Items Measured at Fair Value on a Nonrecurring Basis
Loans held-for-sale	4,152	3,483
Other real estate owned	102	138
Loans	3,367	4,713
Total assets	$7,621	$8,334

FAIR_VALUE_MEASUREMENT_Valuati1

FAIR VALUE MEASUREMENT - Valuation Techniques and Inputs for Level 3 Nonrecurring Fair Value Measurements (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Nonrecurring fair value changes included in earnings
Nonrecurring fair value measurements included in earnings	($515,000,000)	($767,000,000)
Loans held-for-sale
Nonrecurring fair value changes included in earnings
Nonrecurring fair value measurements included in earnings	34,000,000	0
Other real estate owned
Nonrecurring fair value changes included in earnings
Nonrecurring fair value measurements included in earnings	-16,000,000	-6,000,000
Loans
Nonrecurring fair value changes included in earnings
Nonrecurring fair value measurements included in earnings	-533,000,000	-761,000,000
Nonrecurring | Level 3
Valuation techniques and inputs
Total assets	3,635,000,000	2,207,000,000
Nonrecurring | Level 3 | Loans held-for-sale | Price-based
Valuation techniques and inputs
Total assets	2,740,000,000	912,000,000
Nonrecurring | Level 3 | Loans held-for-sale | Price-based | Minimum
Valuation techniques and inputs
Price	92	60
Credit spread	0.05%
Nonrecurring | Level 3 | Loans held-for-sale | Price-based | Maximum
Valuation techniques and inputs
Price	100	100
Credit spread	3.58%
Nonrecurring | Level 3 | Loans held-for-sale | Price-based | Weighted Average
Valuation techniques and inputs
Price	99.54	98.77
Credit spread	1.75%
Nonrecurring | Level 3 | Loans held-for-sale | Cash flow
Valuation techniques and inputs
Total assets		393,000,000
Nonrecurring | Level 3 | Loans held-for-sale | Cash flow | Minimum
Valuation techniques and inputs
Credit spread		0.45%
Nonrecurring | Level 3 | Loans held-for-sale | Cash flow | Maximum
Valuation techniques and inputs
Credit spread		0.80%
Nonrecurring | Level 3 | Loans held-for-sale | Cash flow | Weighted Average
Valuation techniques and inputs
Credit spread		0.64%
Nonrecurring | Level 3 | Other real estate owned | Price-based
Valuation techniques and inputs
Total assets	76,000,000	98,000,000
Nonrecurring | Level 3 | Other real estate owned | Price-based | Minimum
Valuation techniques and inputs
Appraised value	11,000
Discount to price (as a percent)	13.00%	34.00%
Nonrecurring | Level 3 | Other real estate owned | Price-based | Maximum
Valuation techniques and inputs
Appraised value	11,124,137
Discount to price (as a percent)	64.00%	59.00%
Nonrecurring | Level 3 | Other real estate owned | Price-based | Weighted Average
Valuation techniques and inputs
Appraised value	4,730,129
Discount to price (as a percent)	28.80%	39.00%
Nonrecurring | Level 3 | Other real estate owned | Cash flow
Valuation techniques and inputs
Total assets		17,000,000
Nonrecurring | Level 3 | Other real estate owned | Cash flow | Minimum
Valuation techniques and inputs
Price		60.46
Appraised value		636,249
Nonrecurring | Level 3 | Other real estate owned | Cash flow | Maximum
Valuation techniques and inputs
Price		100
Appraised value		15,897,503
Nonrecurring | Level 3 | Other real estate owned | Cash flow | Weighted Average
Valuation techniques and inputs
Price		96.67
Appraised value		11,392,478
Nonrecurring | Level 3 | Loans | Price-based
Valuation techniques and inputs
Total assets	437,000,000	581,000,000
Nonrecurring | Level 3 | Loans | Price-based | Minimum
Valuation techniques and inputs
Discount to price (as a percent)	13.00%	34.00%
Nonrecurring | Level 3 | Loans | Price-based | Maximum
Valuation techniques and inputs
Discount to price (as a percent)	34.00%	39.00%
Nonrecurring | Level 3 | Loans | Price-based | Weighted Average
Valuation techniques and inputs
Discount to price (as a percent)	28.92%	35.00%
Nonrecurring | Level 3 | Loans | Model-based
Valuation techniques and inputs
Total assets		109,000,000
Nonrecurring | Level 3 | Loans | Model-based | Minimum
Valuation techniques and inputs
Price		52.4
Appraised value		6,500,000
Nonrecurring | Level 3 | Loans | Model-based | Maximum
Valuation techniques and inputs
Price		68
Appraised value		86,000,000
Nonrecurring | Level 3 | Loans | Model-based | Weighted Average
Valuation techniques and inputs
Price		65.32
Appraised value		$43,532,719

FAIR_VALUE_MEASUREMENT_Estimat

FAIR VALUE MEASUREMENT - Estimate Fair Value of Financial Instruments Not Carried at Fair Value (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets
Loans	$5,901,000,000	$5,029,000,000
Liabilities
Deposits	899,332,000,000	968,273,000,000
Allowance for loan losses	15,994,000,000	19,648,000,000	25,455,000,000	30,115,000,000
Lease finance receivables	0	2,900,000,000
Corporate
Assets
Loans	5,858,000,000	4,072,000,000
Carrying value
Assets
Investments	30,500,000,000	17,800,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell	98,400,000,000	115,600,000,000
Loans	620,000,000,000	637,900,000,000
Other financial assets	213,800,000,000	250,700,000,000
Liabilities
Deposits	897,600,000,000	966,600,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase and securities loaned	136,700,000,000	152,000,000,000
Long-term debt	196,900,000,000	194,200,000,000
Other financial liabilities	136,200,000,000	136,200,000,000
Fair value
Assets
Investments	32,200,000,000	19,300,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell	98,400,000,000	115,600,000,000
Loans	617,600,000,000	635,100,000,000
Other financial assets	213,800,000,000	250,700,000,000
Liabilities
Deposits	894,000,000,000	965,600,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase and securities loaned	136,700,000,000	152,000,000,000
Long-term debt	202,500,000,000	201,300,000,000
Other financial liabilities	136,200,000,000	136,200,000,000
Fair value | Level 1
Assets
Investments	4,500,000,000	5,300,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell	0	0
Loans	0	0
Other financial assets	8,300,000,000	9,400,000,000
Liabilities
Deposits	0	0
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase and securities loaned	0	0
Long-term debt	0	0
Other financial liabilities	0	0
Fair value | Level 2
Assets
Investments	25,200,000,000	11,900,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell	89,700,000,000	107,200,000,000
Loans	5,600,000,000	5,600,000,000
Other financial assets	151,900,000,000	189,500,000,000
Liabilities
Deposits	746,200,000,000	776,400,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase and securities loaned	136,500,000,000	151,800,000,000
Long-term debt	172,700,000,000	175,600,000,000
Other financial liabilities	41,400,000,000	41,200,000,000
Fair value | Level 3
Assets
Investments	2,500,000,000	2,100,000,000
Federal funds sold and securities borrowed or purchased under agreements to resell	8,700,000,000	8,400,000,000
Loans	612,000,000,000	629,500,000,000
Other financial assets	53,600,000,000	51,800,000,000
Liabilities
Deposits	147,800,000,000	189,200,000,000
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase and securities loaned	200,000,000	200,000,000
Long-term debt	29,800,000,000	25,700,000,000
Other financial liabilities	94,800,000,000	95,000,000,000
Fair value | Level 3 | Corporate
Fair value measurements additional disclosures
Unfunded lending commitments	$5,500,000,000	$5,200,000,000

FAIR_VALUE_ELECTIONS_Changes_i

FAIR VALUE ELECTIONS - Changes in Fair Value Gains (Losses) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Federal funds sold and securities borrowed or purchased under agreements to resell Selected portfolios of securities purchased under agreements to resell and securities borrowed
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	$812	($628)
Trading account assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	190	-190
Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	30	-48
Corporate
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	-135	72
Consumer loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	-41	-155
Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	-176	-83
Mortgage servicing rights
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	-344	553
Certain mortgage loans (HFS)
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	474	951
Other assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	130	1,504
Total assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	986	555
Interest-bearing deposits
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	-77	141
Federal funds purchased and securities loaned or sold under agreements to repurchase Selected portfolios of securities sold under agreements to repurchase and securities loaned
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	-5	110
Trading account liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	29	3
Short-term borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	8	73
Long-term debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	-307	-186
Total liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions.
Fair value elections, changes in fair value gains (losses)	($352)	$141

FAIR_VALUE_ELECTIONS_Valuation

FAIR VALUE ELECTIONS - Valuation Adjustments, Fair Value Option for Financial Assets and Financial Liabilities (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value Option Quantitative Disclosures
Gain (loss) on change in estimated fair value of debt liabilities due to change in company's own credit risk	$218	($412)
Balance of non-accrual loans or loans more than 90 days past due	0	0
Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	0	0
Consolidated VIEs
Fair Value Option Quantitative Disclosures
Aggregate unpaid principal balance in excess of (less than) fair value	9	223
Certain loans and other credit product
Fair Value Option Quantitative Disclosures
Changes in fair value due to instrument-specific credit risk gain (loss)	-155	4
Certain loans and other credit product | Trading assets
Fair Value Option Quantitative Disclosures
Aggregate unpaid principal balance in excess of (less than) fair value	-26	4
Balance of non-accrual loans or loans more than 90 days past due	13	97
Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	28	41
Certain loans and other credit product | Loans
Fair Value Option Quantitative Disclosures
Aggregate unpaid principal balance in excess of (less than) fair value	125	-79
Balance of non-accrual loans or loans more than 90 days past due	3	5
Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	1	5
Certain debt host contracts across unallocated precious metals accounts
Fair Value Option Quantitative Disclosures
Carrying amount reported on the Consolidated Balance Sheet	1,200	1,300
Certain Investments in Unallocated Precious Metals | Forward derivative contract | Purchased
Fair Value Option Quantitative Disclosures
Derivative notionals	7,200
Certain Investments in Unallocated Precious Metals | Forward derivative contract | Sold
Fair Value Option Quantitative Disclosures
Derivative notionals	6,700
Mortgage loans
Fair Value Option Quantitative Disclosures
Aggregate unpaid principal balance in excess of (less than) fair value	67	48
Mortgage loans | Consolidated VIEs
Fair Value Option Quantitative Disclosures
Changes in fair value due to instrument-specific credit risk gain (loss)	-48	-156
Corporate loans | Consolidated VIEs
Fair Value Option Quantitative Disclosures
Aggregate unpaid principal balance in excess of (less than) fair value	9	7
Balance of non-accrual loans or loans more than 90 days past due	0	0
Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	0	0
Consumer loans | Consolidated VIEs
Fair Value Option Quantitative Disclosures
Aggregate unpaid principal balance in excess of (less than) fair value	0	212
Balance of non-accrual loans or loans more than 90 days past due	0	81
Aggregate unpaid principal balance in excess of fair value for non-accrual loans or loans more than 90 days past due	0	106
Carrying amount | Certain loans and other credit product | Trading assets
Fair Value Option Quantitative Disclosures
Carrying amount reported on the Consolidated Balance Sheet	10,290	9,262
Carrying amount | Certain loans and other credit product | Loans
Fair Value Option Quantitative Disclosures
Carrying amount reported on the Consolidated Balance Sheet	5,901	4,105
Carrying amount | Certain mortgage loans (HFS)
Fair Value Option Quantitative Disclosures
Carrying amount reported on the Consolidated Balance Sheet	1,447	2,089
Carrying amount | Corporate loans | Consolidated VIEs
Fair Value Option Quantitative Disclosures
Carrying amount reported on the Consolidated Balance Sheet	0	14
Carrying amount | Consumer loans | Consolidated VIEs
Fair Value Option Quantitative Disclosures
Carrying amount reported on the Consolidated Balance Sheet	0	910
Fair value | Certain loans and other credit product
Fair Value Option Quantitative Disclosures
Unfunded lending commitments	$2,335	$2,308

FAIR_VALUE_ELECTIONS_Certain_S

FAIR VALUE ELECTIONS - Certain Structured and Non-Structed Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Carrying value of structured notes, disaggregated by type of embedded derivative instrument
Carrying value of structured notes	$23,100,000,000	$22,600,000,000
Excluding Consolidated VIE's
Certain non-structured liabilities
Aggregate unpaid principal balance in excess of (less than) fair value	-151,000,000	-866,000,000
Long-term debt | Carrying amount | Excluding Consolidated VIE's
Certain non-structured liabilities
Carrying amount reported on the Consolidated Balance Sheet	26,180,000,000	25,968,000,000
Short-term borrowings
Certain non-structured liabilities
Aggregate unpaid principal balance in excess of (less than) fair value	31,000,000	-38,000,000
Short-term borrowings | Carrying amount
Certain non-structured liabilities
Carrying amount reported on the Consolidated Balance Sheet	1,496,000,000	3,692,000,000
Interest Rate Linked
Carrying value of structured notes, disaggregated by type of embedded derivative instrument
Carrying value of structured notes	10,900,000,000	9,800,000,000
Foreign Exchange Linked
Carrying value of structured notes, disaggregated by type of embedded derivative instrument
Carrying value of structured notes	300,000,000	500,000,000
Equity Linked
Carrying value of structured notes, disaggregated by type of embedded derivative instrument
Carrying value of structured notes	8,000,000,000	7,000,000,000
Commodity Linked
Carrying value of structured notes, disaggregated by type of embedded derivative instrument
Carrying value of structured notes	1,400,000,000	1,800,000,000
Credit Linked
Carrying value of structured notes, disaggregated by type of embedded derivative instrument
Carrying value of structured notes	$2,500,000,000	$3,500,000,000

PLEDGED_ASSETS_COLLATERAL_GUAR2

PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS - Pledged Assets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Carrying Values of Significant Components of Pledged Assets
Investment securities	$173,015,000,000	$183,071,000,000
Loans	214,530,000,000	228,513,000,000
Trading account assets	111,832,000,000	118,832,000,000
Total	499,377,000,000	530,416,000,000
Cash and due from banks	6,200,000,000	8,800,000,000
Fair value of collateral received that may be resold or repledged	346,700,000,000	308,300,000,000
Pledged collateral that may not be sold or repledged	$376,000,000,000	$397,000,000,000

PLEDGED_ASSETS_COLLATERAL_GUAR3

PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS - Lease Commitments (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pledged Assets, Collateral, Guarantees and Commitments [Abstract]
Rental expense	$1,400,000,000	$1,500,000,000	$1,500,000,000
Future Minimum Annual Rentals
2015	1,415,000,000
2016	1,192,000,000
2017	964,000,000
2018	771,000,000
2019	679,000,000
Thereafter	4,994,000,000
Total	$10,015,000,000

PLEDGED_ASSETS_COLLATERAL_GUAR4

PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS - Gurantees (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
	trust	trust
Maximum potential amount of future payments
Expire Within One Year	$258,500,000,000	$207,500,000,000
Expire After One Year	206,100,000,000	174,500,000,000
Total amount outstanding	464,600,000,000	382,000,000,000
Carrying value	3,146,000,000	1,343,000,000
Compensation for standard representations and warranties	0
Stated or notional amounts included in the indemnification clauses	0
Liability related to VTNs	0	0
Number of trusts funded by the reinsurer	2	2
Fair value of securities in trusts funded by reinsurer relating to indemnification	6,200,000,000	5,400,000,000
Liability related to long-term care insurance indemnification	0	0
Cash collateral available to reimburse losses realized under guarantees and indemnifications	63,000,000,000	52,000,000,000
Securities and other marketable assets held as collateral, the majority of which collateral is held to reimburse losses realized under securities lending indemnifications	70,000,000,000	39,000,000,000
Letters of credit in favor of the Company held as collateral	4,000,000,000	5,300,000,000
Investment Grade
Maximum potential amount of future payments
Total amount outstanding	129,100,000,000	119,800,000,000
Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	19,900,000,000	18,500,000,000
Not rated
Maximum potential amount of future payments
Total amount outstanding	315,600,000,000	243,700,000,000
Financial standby letters of credit
Maximum potential amount of future payments
Expire Within One Year	25,400,000,000	28,800,000,000
Expire After One Year	73,000,000,000	71,400,000,000
Total amount outstanding	98,400,000,000	100,200,000,000
Carrying value	242,000,000	429,000,000
Financial standby letters of credit | Investment Grade
Maximum potential amount of future payments
Total amount outstanding	73,000,000,000	76,200,000,000
Financial standby letters of credit | Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	15,900,000,000	14,800,000,000
Financial standby letters of credit | Not rated
Maximum potential amount of future payments
Total amount outstanding	9,500,000,000	9,200,000,000
Performance guarantees
Maximum potential amount of future payments
Expire Within One Year	7,100,000,000	7,600,000,000
Expire After One Year	4,800,000,000	4,900,000,000
Total amount outstanding	11,900,000,000	12,500,000,000
Carrying value	29,000,000	42,000,000
Performance guarantees | Investment Grade
Maximum potential amount of future payments
Total amount outstanding	7,300,000,000	7,400,000,000
Performance guarantees | Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	3,900,000,000	3,600,000,000
Performance guarantees | Not rated
Maximum potential amount of future payments
Total amount outstanding	700,000,000	1,500,000,000
Derivative instruments considered to be guarantees
Maximum potential amount of future payments
Expire Within One Year	12,500,000,000	6,000,000,000
Expire After One Year	79,200,000,000	61,600,000,000
Total amount outstanding	91,700,000,000	67,600,000,000
Carrying value	2,806,000,000	797,000,000
Derivative instruments considered to be guarantees | Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Derivative instruments considered to be guarantees | Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Derivative instruments considered to be guarantees | Not rated
Maximum potential amount of future payments
Total amount outstanding	91,700,000,000	67,600,000,000
Loans sold with recourse
Maximum potential amount of future payments
Expire Within One Year	0	0
Expire After One Year	200,000,000	300,000,000
Total amount outstanding	200,000,000	300,000,000
Carrying value	15,000,000	22,000,000
Repurchase reserve for Consumer mortgages representations and warranties	224,000,000	341,000,000
Loans sold with recourse | Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Loans sold with recourse | Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Loans sold with recourse | Not rated
Maximum potential amount of future payments
Total amount outstanding	200,000,000	300,000,000
Securities lending indemnifications
Maximum potential amount of future payments
Expire Within One Year	127,500,000,000	79,200,000,000
Expire After One Year	0	0
Total amount outstanding	127,500,000,000	79,200,000,000
Carrying value	0	0
Securities lending indemnifications | Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Securities lending indemnifications | Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Securities lending indemnifications | Not rated
Maximum potential amount of future payments
Total amount outstanding	127,500,000,000	79,200,000,000
Credit card merchant processing
Maximum potential amount of future payments
Expire Within One Year	86,000,000,000	85,900,000,000
Expire After One Year	0	0
Total amount outstanding	86,000,000,000	85,900,000,000
Carrying value	0	0
Maximum potential contingent liability related to bankcard and private-label merchant processing services	86,000,000,000	86,000,000,000
Credit card merchant processing | Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Credit card merchant processing | Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	0	0
Credit card merchant processing | Not rated
Maximum potential amount of future payments
Total amount outstanding	86,000,000,000	85,900,000,000
Custody indemnifications and other
Maximum potential amount of future payments
Expire Within One Year	0	0
Expire After One Year	48,900,000,000	36,300,000,000
Total amount outstanding	48,900,000,000	36,300,000,000
Carrying value	54,000,000	53,000,000
Custody indemnifications and other | Investment Grade
Maximum potential amount of future payments
Total amount outstanding	48,800,000,000	36,200,000,000
Custody indemnifications and other | Non-Investment Grade
Maximum potential amount of future payments
Total amount outstanding	100,000,000	100,000,000
Custody indemnifications and other | Not rated
Maximum potential amount of future payments
Total amount outstanding	0	0
Futures and over-the-counter derivatives clearing
Maximum potential amount of future payments
Number of types of margin	2
Amount of cash initial margin collected and remitted	$3,200,000,000	$1,400,000,000

PLEDGED_ASSETS_COLLATERAL_GUAR5

PLEDGED ASSETS, COLLATERAL, GUARANTEES AND COMMITMENTS - Credit Commitments and Lines of Credit (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Credit Commitments
Credit commitments	$899,052,000,000	$911,492,000,000
Commercial and similar letters of credit
Credit Commitments
Credit commitments	6,634,000,000	7,341,000,000
One-to four-family residential mortgages
Credit Commitments
Credit commitments	5,674,000,000	4,946,000,000
Revolving open-end loans secured by one-to four-family residential properties
Credit Commitments
Credit commitments	16,098,000,000	16,781,000,000
Commercial real estate, construction and land development
Credit Commitments
Credit commitments	9,242,000,000	8,003,000,000
Credit card lines
Credit Commitments
Credit commitments	612,049,000,000	641,111,000,000
Commercial and other consumer loan commitments
Credit Commitments
Credit commitments	243,680,000,000	225,447,000,000
Commercial and other consumer loan commitments original maturity of less than 1 year	53,000,000,000	58,000,000,000
Other commitments and contingencies
Credit Commitments
Credit commitments	5,675,000,000	7,863,000,000
U.S.
Credit Commitments
Credit commitments	675,090,000,000
U.S. | Commercial and similar letters of credit
Credit Commitments
Credit commitments	1,369,000,000
U.S. | One-to four-family residential mortgages
Credit Commitments
Credit commitments	3,243,000,000
U.S. | Revolving open-end loans secured by one-to four-family residential properties
Credit Commitments
Credit commitments	13,535,000,000
U.S. | Commercial real estate, construction and land development
Credit Commitments
Credit commitments	8,045,000,000
U.S. | Credit card lines
Credit Commitments
Credit commitments	492,391,000,000
U.S. | Commercial and other consumer loan commitments
Credit Commitments
Credit commitments	154,923,000,000
U.S. | Other commitments and contingencies
Credit Commitments
Credit commitments	1,584,000,000
Outside U.S.
Credit Commitments
Credit commitments	223,962,000,000
Outside U.S. | Commercial and similar letters of credit
Credit Commitments
Credit commitments	5,265,000,000
Outside U.S. | One-to four-family residential mortgages
Credit Commitments
Credit commitments	2,431,000,000
Outside U.S. | Revolving open-end loans secured by one-to four-family residential properties
Credit Commitments
Credit commitments	2,563,000,000
Outside U.S. | Commercial real estate, construction and land development
Credit Commitments
Credit commitments	1,197,000,000
Outside U.S. | Credit card lines
Credit Commitments
Credit commitments	119,658,000,000
Outside U.S. | Commercial and other consumer loan commitments
Credit Commitments
Credit commitments	88,757,000,000
Outside U.S. | Other commitments and contingencies
Credit Commitments
Credit commitments	$4,091,000,000

CONTINGENCIES_Details

CONTINGENCIES (Details)

Dec. 31, 2014

Oct. 20, 2008

Aug. 29, 2014

Dec. 31, 2007

Sep. 11, 2014

Apr. 07, 2014

Dec. 31, 2014

Dec. 19, 2014

Apr. 07, 2014

Jun. 18, 2014

Nov. 24, 2014

Jul. 22, 2014

Feb. 28, 2014

Mar. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Oct. 31, 2012

Oct. 06, 2014

Feb. 08, 2012

Dec. 31, 2009

Dec. 31, 2007

Jan. 14, 2014

Apr. 18, 2011

Oct. 20, 2008

Jan. 31, 2011

Dec. 31, 2014

Dec. 31, 2003

Jul. 14, 2014

Jul. 14, 2014

Jul. 14, 2014

Nov. 12, 2014

Nov. 12, 2014

Nov. 12, 2014

USD ($)

Parmalat

Parmalat

Abu Dhabi Investment Authority

Sullivan

Residential Mortgage-Backed Securities Investor Actions and Repurchase Claims

Residential Mortgage-Backed Securities Investor Actions and Repurchase Claims

Residential Mortgage-Backed Securities Investor Actions and Repurchase Claims

Residential Mortgage-Backed Securities Investor Actions and Repurchase Claims

Mortgage-backed securities trustee actions

Mortgage-backed securities trustee actions

Fraud litigation

Fraud litigation

Fraud litigation

Fraud litigation

Fraud litigation

Alternative investment fund related litigation and other matters

Lehman Brothers Bankruptcy

Lehman Brothers Bankruptcy

Terra Firma Oral Misrepresentation

Tribune Company Bankruptcy

Interchange Fees Litigation

Parmalat Litigation

Parmalat Litigation

Parmalat Litigation

Parmalat Litigation

Allied Irish Bank Litigation

Department of Justice

State Attorneys General and FDIC

Consumer Relief

FCA

OCC

CFTC

USD ($)

Judicial Ruling

USD ($)

In Re Citigroup Inc. Securities Litigation

In Re Citigroup Inc. Securities Litigation

In Re Citigroup Inc. Securities Litigation

In Re Citigroup Inc. Securities Litigation

Blackrock Allocation Target Shares, Series S Portfolio

Fixed Income Shares, Series M

Financing of Storage at Quingdao and Penglai Ports

Oceanografia

Oceanografia

Oceanografia

Oceanografia

USD ($)

USD ($)

USD ($)

plaintiff

USD ($)

USD ($)

EUR (€)

claim

EUR (€)

EUR (€)

USD ($)

Residential Mortgage-Backed Securities Working Group

Residential Mortgage-Backed Securities Working Group

Residential Mortgage-Backed Securities Working Group

Foreign exchange matters

Foreign exchange matters

Foreign exchange matters

USD ($)

trust

USD ($)

investor

USD ($)

trust

trust

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

investor

loan

investor

trust

action

Contingencies

Possible loss, high end of the range

$4,000,000,000

Loss contingency damages sought

285,000,000

70,000,000

Litigation settlement, amount

6,050,000,000

4,000,000,000

500,000,000

2,500,000,000

358,000,000

350,000,000

310,000,000

Period of Motion to Stay Discovery

8 months

Aggregate original purchase amount

4,900,000,000

Aggregate original purchase amount of the purchases covered by tolling agreements

1,400,000,000

Number of Investors

18

18

Number of entity sponsored mortgage securitization trusts

68

Amount of binding offer

1,125,000,000

Number of entity sponsored mortgage securitization trusts with settlement

64

Number of entity sponsored mortgage securitization trusts excluded from settlement

4

Number of actions filed

6

Number of private-label securitizations

4

Number of loans

6,700

Number of MBS trusts which company serves as trustee

48

Number of MBS trusts

27

Third party equity investment

7,500,000,000

Estimate of possible loss

4,000,000,000

400,000,000

Proofs of claims

2,600,000,000

Bankruptcy claims clearing obligations amount to avoid from setoff related to terminated derivative contracts

2,000,000,000

Bankruptcy claim clearing obligations amount to avoid from setoff

500,000,000

Number of plaintiffs

2

Business acquisition price LBO

11,000,000,000

Contingent loss as claimed against the company

14,000,000,000

500,000,000

Basis points on interchange collected

0.10%

Period of collecting interchange fees

8 months

After-tax charge resulting from a fraud discovered

235,000,000

Pretax charge resulting from a fraud discovered

360,000,000

Incremental credit cost

165,000,000

Amount of credit cost direct exposure to oil service company

33,000,000

Fine imposed

2,200,000

Damages awarded

431,000,000

431,000,000

Contingent loss on accounts receivable

113,000,000

Number of favorable counterclaims

3

Disgorgement

70,000,000

Amount of fine

900,000

Damages sought

€ 130,000,000

SELECTED_QUARATERLY_FINANCIAL_2

SELECTED QUARATERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $)	3 Months Ended												12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Revenues, net of interest expense	$17,812	$19,604	$19,342	$20,124	$17,779	$17,904	$20,488	$20,248					$76,882	[1]	$76,419	[1]	$69,190
Operating expenses	14,426	12,955	15,521	12,149	12,293	11,679	12,149	12,288					55,051	[1]	48,408	[1]	50,036	[1]
Provisions for credit losses and for benefits and claims	2,013	1,750	1,730	1,974	2,072	1,959	2,024	2,459					7,467		8,514		11,329
Income from continuing operations before income taxes	1,373	4,899	2,091	6,001	3,414	4,266	6,315	5,501					14,364		19,497		7,825
Provision for income taxes	991	1,985	1,838	2,050	1,090	1,080	2,127	1,570					6,864		5,867		7
Income from continuing operations	382	2,914	253	3,951	2,324	3,186	4,188	3,931					7,500		13,630		7,818
Income (loss) from discontinued operations, net of taxes	-1	-16	-22	37	181	92	30	-33					-2		270		-58
Net income before attribution of noncontrolling interests	381	2,898	231	3,988	2,505	3,278	4,218	3,898					7,498		13,900		7,760
Noncontrolling interests	31	59	50	45	50	51	36	90					185		227		219
Citigroup’s net income	$350	$2,839	$181	$3,943	$2,455	$3,227	$4,182	$3,808					$7,313		$13,673		$7,541
Basic earnings per share
Income from continuing operations (in dollars per share)	$0.06	$0.89	$0.03	$1.22	$0.71	$0.98	$1.34	$1.24					$2.21	[2]	$4.27	[2]	$2.53	[2]
Net income (in dollars per share)	$0.06	$0.88	$0.03	$1.24	$0.77	$1.01	$1.35	$1.23					$2.21	[2]	$4.35	[2]	$2.51	[2]
Diluted earnings per share
Income from continuing operations (in dollars per share)	$0.06	$0.88	$0.03	$1.22	$0.71	$0.98	$1.33	$1.24					$2.20	[2]	$4.26	[2]	$2.46	[2]
Net income (in dollars per share)	$0.06	$0.88	$0.03	$1.23	$0.77	$1	$1.34	$1.23					$2.20	[2]	$4.35	[2]	$2.44	[2]
Common stock price per share
High (in dollars per share)	$56.37	$53.66	$49.58	$55.20	$53.29	$53	$53.27	$47.60					$56.37		$53.29
Low (in dollars per share)	$49.68	$46.90	$45.68	$46.34	$47.67	$47.67	$42.50	$41.15					$49.68		$47.67
Close (in dollars per share)	$54.11	$51.82	$47.10	$47.60	$52.11	$48.51	$47.97	$44.24					$54.11		$52.11
Common dividends declared (in dollars per share)	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01	$0.01
[1]	Certain prior-period revenue and expense lines and totals were reclassified to conform to the current period’s presentation. See Note 3 to the Consolidated Financial Statements.
[2]	Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.