KeyCorp (KEY) 10-Q 3 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Trading Symbol	KEY
Entity Registrant Name	KEYCORP /NEW/
Entity Central Index Key	91,576
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		840,860,998

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions		Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
ASSETS
Cash and due from banks		$ 693	$ 653	$ 604
Short-term investments		3,222	4,269	3,176
Trading account assets		674	750	890
Securities available for sale		14,244	13,360	12,224
Held-to-maturity securities (fair value: $4,992, $4,974, and $5,154)		5,022	5,015	5,233
Other investments		703	760	899
Loans, net of unearned income of $657, $682, and $709		58,264	57,381	55,600
Less: Allowance for loan and lease losses		796	794	814
Net loans		57,468	56,587	54,786
Loans held for sale		835	734	435
Premises and equipment		788	841	844
Operating lease assets		296	330	306
Goodwill		1,057	1,057	979
Other intangible assets		83	101	108
Corporate-owned life insurance		3,502	3,479	3,438
Derivative assets		536	609	549
Accrued income and other assets (including $1 of consolidated LIHTC guaranteed funds VIEs, see Note 9)	[1]	3,314	2,952	3,090
Discontinued assets (including $179 of portfolio loans held for sale at fair value)		2,169	2,324	4,237
Total assets		94,606	93,821	91,798
Deposits in domestic offices:
NOW and money market deposit accounts		36,024	34,536	33,637
Savings deposits		2,370	2,371	2,450
Certificates of deposit ($100,000 or more)		2,032	2,040	2,743
Other time deposits		3,105	3,259	3,505
Total interest-bearing deposits		43,531	42,206	42,335
Noninterest-bearing deposits		26,640	29,228	24,781
Deposits in foreign office - interest-bearing		498	564	683
Total deposits		70,669	71,998	67,799
Federal funds purchased and securities sold under repurchase agreements		444	575	1,213
Bank notes and other short-term borrowings		528	423	521
Derivative liabilities		560	784	451
Accrued expense and other liabilities		1,537	1,621	1,400
Long-term debt		10,267	7,875	8,213
Discontinued liabilities			3	1,680
Total liabilities		84,005	83,279	81,277
EQUITY
Common shares, $1 par value; authorized 1,400,000,000 shares; issued 1,016,969,905, 1,016,969,905, and 1,016,969,905 shares		1,017	1,017	1,017
Capital surplus		3,898	3,986	3,987
Retained earnings		8,614	8,273	7,950
Treasury stock, at cost (173,362,345, 157,566,493, and 140,147,398 shares)		(2,884)	(2,681)	(2,452)
Accumulated other comprehensive income (loss)		(345)	(356)	(289)
Key shareholders' equity		10,590	10,530	10,504
Noncontrolling interests		11	12	17
Total equity		10,601	10,542	10,521
Total liabilities and equity		94,606	93,821	91,798
Series A Preferred Stock [Member]
EQUITY
Preferred stock, $1 par value, authorized 25,000,000 shares: 7.75% Noncumulative Perpetual Convertible Preferred Stock, Series A, $100 liquidation preference; authorized 7,475,000 shares; issued 2,900,234, 2,904,839, and 2,904,839 shares		$ 290	$ 291	$ 291
[1]	The assets of the VIEs can only be used by the particular VIE, and there is no recourse to Key with respect to the liabilities of the consolidated LIHTC VIEs.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Held-to-maturity securities, fair value	$ 4,992	$ 4,974	$ 5,154
Unearned income on loans	657	682	709
Consolidated guaranteed funds VIEs, for accrued income and other assets	1
Loan securitization trust VIEs, fair value	179
Aggregate amount of certificates of deposit, denominations	$ 100,000	$ 100,000	$ 100,000
Preferred stock, par value	$ 1	$ 1	$ 1
Preferred stock, shares authorized	25,000,000	25,000,000	25,000,000
Common shares, par value	$ 1	$ 1	$ 1
Common shares, shares authorized	1,400,000,000	1,400,000,000	1,400,000,000
Common shares, shares issued	1,016,969,905	1,016,969,905	1,016,969,905
Treasury stock, shares	173,362,345	157,566,493	140,147,398
Series A Preferred Stock [Member]
Preferred stock, liquidation preference	$ 100	$ 100	$ 100
Preferred stock, shares authorized	7,475,000	7,475,000	7,475,000
Preferred stock, shares issued, Total	2,900,234	2,904,839	2,904,839
Preferred stock, dividend rate	7.75%	7.75%	7.75%

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
INTEREST INCOME
Loans		$ 532	$ 526	$ 1,055	$ 1,045
Loans held for sale		12	5	19	9
Securities available for sale		72	71	142	143
Held-to-maturity securities		24	23	48	45
Trading account assets		5	7	10	13
Short-term investments		2	1	4	2
Other investments		5	6	10	12
Total interest income		652	639	1,288	1,269
INTEREST EXPENSE
Deposits		26	31	52	63
Federal funds purchased and securities sold under repurchase agreements					1
Bank notes and other short-term borrowings		2	2	4	4
Long-term debt		40	33	77	65
Total interest expense		68	66	133	133
NET INTEREST INCOME		584	573	1,155	1,136
Provision for credit losses		41	12	76	16
Net interest income after provision for credit losses		543	561	1,079	1,120
NONINTEREST INCOME
Trust and investment services income		111	94	220	192
Investment banking and debt placement fees		141	99	209	183
Service charges on deposit accounts		63	66	124	129
Operating lease income and other leasing gains		24	35	43	64
Corporate services income		43	41	86	83
Cards and payments income		47	43	89	81
Corporate-owned life insurance income		30	28	61	54
Consumer mortgage income		4	2	7	4
Mortgage servicing fees		9	11	22	26
Net gains (losses) from principal investing		11	27	40	51
Other income	[1]	5	9	24	23
Total noninterest income		488	455	925	890
NONINTEREST EXPENSE
Personnel		408	389	797	777
Net occupancy		66	68	131	132
Computer processing		42	41	80	79
Business services and professional fees		42	41	75	82
Equipment		22	24	44	48
Operating lease expense		12	10	23	20
Marketing		15	13	23	18
FDIC assessment		8	6	16	12
Intangible asset amortization		9	9	18	19
OREO expense, net		1	1	3	2
Other expense		86	85	170	162
Total noninterest expense		711	687	1,380	1,351
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		320	329	624	659
Income taxes		84	76	158	168
Income (loss) from continuing operations		236	253	466	491
Income (loss) from discontinued operations, net of taxes of $2, ($16), $5, and ($14) (see Note 11)		3	(28)	8	(24)
NET INCOME (LOSS)		239	225	474	467
Less: Net income (loss) attributable to noncontrolling interests		1	6	3	6
NET INCOME (LOSS) ATTRIBUTABLE TO KEY		238	219	471	461
Income (loss) from continuing operations attributable to Key common shareholders		230	242	452	474
Net income (loss) attributable to Key common shareholders		$ 233	$ 214	$ 460	$ 450
Per common share:
Income (loss) from continuing operations attributable to Key common shareholders		$ 0.27	$ 0.28	$ 0.53	$ 0.54
Income (loss) from discontinued operations, net of taxes			(0.03)	0.01	(0.03)
Net income (loss) attributable to Key common shareholders	[2]	0.28	0.24	0.54	0.51
Per common share - assuming dilution:
Income (loss) from continuing operations attributable to Key common shareholders		0.27	0.27	0.52	0.53
Income (loss) from discontinued operations, net of taxes			(0.03)	0.01	(0.03)
Net income (loss) attributable to Key common shareholders	[2]	0.27	0.24	0.53	0.51
Cash dividends declared per common share		$ 0.075	$ 0.065	$ 0.140	$ 0.120
Weighted-average common shares outstanding (000)		839,454	875,298	843,992	879,986
Effect of convertible preferred stock			20,602
Effect of common share options and other stock awards		6,858	6,237	7,695	6,698
Weighted-average common shares and potential common shares outstanding (000)	[3]	846,312	902,137	851,687	886,684
[1]	For each of the three months ended June 30, 2015, and June 30, 2014, net securities gains (losses) totaled less than $1 million. For the three months ended June 30, 2015, and June 30, 2014, we did not have any impairment losses related to securities.
[2]	EPS may not foot due to rounding.
[3]	Assumes conversion of common share options and other stock awards and/or convertible preferred stock, as applicable.

Consolidated Statements of Inc5

Consolidated Statements of Income (Unaudited) (Parenthetical) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net tax effect on income (loss) from discontinued operations	$ 2,000,000	$ (16,000,000)	$ 5,000,000	$ (14,000,000)
Net securities gains (losses)	(1,000,000)	1,000,000	$ (1,000,000)
Impairment losses related to securities	$ 0	$ 0

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 239	$ 225	$ 474	$ 467
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale, net of income taxes of ($31), $17, $2, and $34	(51)	28	4	57
Net unrealized gains (losses) on derivative financial instruments, net of income taxes of ($10), $4, $9, and $3	(17)	5	15	4
Foreign currency translation adjustments, net of income taxes of $0, $4, ($8), and $0		(1)	(13)	(3)
Net pension and postretirement benefit costs, net of income taxes of $2, $1, $3, and $3	2	3	5	5
Total other comprehensive income (loss), net of tax	(66)	35	11	63
Comprehensive income (loss)	173	260	485	530
Less: Comprehensive income attributable to noncontrolling interests	1	6	3	6
Comprehensive income (loss) attributable to Key	$ 172	$ 254	$ 482	$ 524

Consolidated Statements of Com7

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Income taxes effect on net unrealized (losses) gains on securities available for sale	$ (31)	$ 17	$ 2	$ 34
Income taxes effect on net unrealized (losses) gains on derivative financial instruments	(10)	4	9	3
Income taxes effect on foreign currency translation adjustments	0	4	(8)	0
Income taxes effect on net pension and postretirement benefit costs	$ 2	$ 1	$ 3	$ 3

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Preferred Stock [Member]	Common Shares [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock, at Cost [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]	Series A Preferred Stock [Member]Preferred Stock [Member]	Series A Preferred Stock [Member]Common Shares [Member]	Series A Preferred Stock [Member]Retained Earnings [Member]	Series A Preferred Stock [Member]Treasury Stock, at Cost [Member]
Beginning Balance at Dec. 31, 2013		$ 291	$ 1,017	$ 4,022	$ 7,606	$ (2,281)	$ (352)	$ 17
Beginning Balance, Preferred Shares at Dec. 31, 2013		2,905
Beginning Balance, Common Shares at Dec. 31, 2013			890,724
Net income (loss)	$ 467				461			6
Other comprehensive income (loss):
Net unrealized gains (losses) on securities available for sale, net of income taxes	57						57
Net unrealized gains (losses) on derivative financial instruments, net of income taxes	4						4
Foreign currency translation adjustments, net of income taxes	(3)						(3)
Net pension and postretirement benefit costs, net of income taxes	5						5
Deferred compensation				2
Cash dividends declared on common shares					(106)
Cash dividends declared on Noncumulative Series A Preferred Stock											$ (11)
Common shares repurchased, value						(236)
Common shares repurchased, shares			(17,669)
Common shares reissued (returned) for stock options and other employee benefit plans				(37)		65
Common shares reissued (returned) for stock options and other employee benefit plans, shares			3,768
Net contribution from (distribution to) noncontrolling interests								(6)
Ending Balance at Jun. 30, 2014	10,521	$ 291	$ 1,017	3,987	7,950	(2,452)	(289)	17
Ending Balance, Preferred Shares at Jun. 30, 2014		2,905
Ending Balance, Common Shares at Jun. 30, 2014			876,823
Beginning Balance at Dec. 31, 2014	10,542	$ 291	$ 1,017	3,986	8,273	(2,681)	(356)	12
Beginning Balance, Preferred Shares at Dec. 31, 2014		2,905
Beginning Balance, Common Shares at Dec. 31, 2014			859,403
Net income (loss)	474				471			3
Other comprehensive income (loss):
Net unrealized gains (losses) on securities available for sale, net of income taxes	4						4
Net unrealized gains (losses) on derivative financial instruments, net of income taxes	15						15
Foreign currency translation adjustments, net of income taxes	(13)						(13)
Net pension and postretirement benefit costs, net of income taxes	5						5
Deferred compensation				12
Cash dividends declared on common shares					(119)
Cash dividends declared on Noncumulative Series A Preferred Stock											$ (11)
Common shares repurchased, value						(325)
Common shares repurchased, shares			(22,881)
Series A Preferred Stock exchanged for common shares									$ (1)			$ 1
Series A Preferred Stock exchanged for common shares, shares									(5)	33
Common shares reissued (returned) for stock options and other employee benefit plans				(100)		121
Common shares reissued (returned) for stock options and other employee benefit plans, shares			7,053
Net contribution from (distribution to) noncontrolling interests								(4)
Ending Balance at Jun. 30, 2015	$ 10,601	$ 290	$ 1,017	$ 3,898	$ 8,614	$ (2,884)	$ (345)	$ 11
Ending Balance, Preferred Shares at Jun. 30, 2015		2,900
Ending Balance, Common Shares at Jun. 30, 2015			843,608

Consolidated Statements of Cha9

Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Income taxes effect on net unrealized (losses) gains on securities available for sale	$ 2	$ 34
Income taxes effect on net unrealized gains (losses) on derivative financial instruments	9	3
Income taxes effect on foreign currency translation adjustments	(8)	0
Income taxes effect on net pension and postretirement benefit costs	$ 3	$ 3
Cash dividends declared on common shares, per share	$ 0.140	$ 0.120
Retained Earnings [Member]
Cash dividends declared on common shares, per share	$ 0.14	$ 0.12
Accumulated Other Comprehensive Income (Loss) [Member]
Income taxes effect on net unrealized (losses) gains on securities available for sale	$ 2	$ 34
Income taxes effect on net unrealized gains (losses) on derivative financial instruments	9	3
Income taxes effect on foreign currency translation adjustments	(8)	0
Income taxes effect on net pension and postretirement benefit costs	$ 3	$ 3
Series A Preferred Stock [Member] | Retained Earnings [Member]
Cash dividends declared on Preferred Stock, per share	$ 3.875	$ 3.875

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
OPERATING ACTIVITIES
Net income (loss)	$ 474	$ 467
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for credit losses	76	16
Provision (credit) for losses on LIHTC guaranteed funds		(6)
Depreciation, amortization and accretion expense, net	116	109
Increase in cash surrender value of corporate-owned life insurance	(50)	(48)
Stock-based compensation expense	33	21
FDIC reimbursement (payments), net of FDIC expense	(1)
Deferred income taxes (benefit)	(27)	9
Proceeds from sales of loans held for sale	3,726	1,570
Originations of loans held for sale, net of repayments	(3,756)	(1,359)
Net losses (gains) on sales of loans held for sale	(55)	(40)
Net losses (gains) from principal investing	(40)	(51)
Net losses (gains) and writedown on OREO	2	2
Net losses (gains) on leased equipment	(9)	(34)
Net securities losses (gains)	1
Net losses (gains) on sales of fixed assets	2	1
Net decrease (increase) in trading account assets	76	(152)
Other operating activities, net	(509)	(242)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	59	263
INVESTING ACTIVITIES
Net decrease (increase) in short-term investments, excluding acquisitions	1,047	2,414
Purchases of securities available for sale	(2,451)	(1,175)
Proceeds from sales of securities available for sale	11
Proceeds from prepayments and maturities of securities available for sale	1,547	1,382
Proceeds from prepayments and maturities of held-to-maturity securities	566	391
Purchases of held-to-maturity securities	(575)	(869)
Purchases of other investments	(20)	(26)
Proceeds from sales of other investments	77	167
Proceeds from prepayments and maturities of other investments	5	1
Net decrease (increase) in loans, excluding acquisitions, sales and transfers	(1,128)	(1,269)
Proceeds from sales of portfolio loans	67	67
Proceeds from corporate-owned life insurance	26	18
Purchases of premises, equipment, and software	(17)	(30)
Proceeds from sales of premises and equipment		1
Proceeds from sales of OREO	10	10
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(835)	1,082
FINANCING ACTIVITIES
Net increase (decrease) in deposits, excluding acquisitions	(1,329)	(1,463)
Net increase (decrease) in short-term borrowings	(26)	(143)
Net proceeds from issuance of long-term debt	2,750	608
Payments on long-term debt	(141)	(26)
Repurchase of common shares	(325)	(236)
Net proceeds from reissuance of common shares	17	19
Cash dividends paid	(130)	(117)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	816	(1,358)
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	40	(13)
CASH AND DUE FROM BANKS AT BEGINNING OF PERIOD	653	617
CASH AND DUE FROM BANKS AT END OF PERIOD	693	604
Additional disclosures relative to cash flows:
Interest paid	128	133
Income taxes paid (refunded)	90	82
Noncash items:
Reduction of secured borrowing and related collateral	103	32
Loans transferred to portfolio from held for sale		10
Loans transferred to held for sale from portfolio	16	5
Loans transferred to OREO	$ 12	$ 9

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	1. Basis of Presentation As used in these Notes, references to “Key,” “we,” “our,” “us,” and similar terms refer to the consolidated entity consisting of KeyCorp and its subsidiaries. KeyCorp refers solely to the parent holding company, and KeyBank refers to KeyCorp’s subsidiary, KeyBank National Association. The acronyms and abbreviations identified below are used in the Notes to Consolidated Financial Statements (Unaudited) as well as in the Management’s Discussion & Analysis of Financial Condition & Results of Operations. You may find it helpful to refer back to this page as you read this report. References to our “2014 Form 10-K” refer to our Form 10-K for the year ended December 31, 2014, which was filed with the U.S. Securities and Exchange Commission and is available on its website ( www.sec.gov www.key.com/ir AICPA: American Institute of Certified Public Accountants. LCR: Liquidity coverage ratio. ALCO: Asset/Liability Management Committee. LIBOR: London Interbank Offered Rate. ALLL: Allowance for loan and lease losses. LIHTC: Low-income housing tax credit. A/LM: Asset/liability management. Moody’s: Moody’s Investor Services, Inc. AOCI: Accumulated other comprehensive income (loss). MRM: Market Risk Management group. APBO: Accumulated postretirement benefit obligation. N/A: Not applicable. Austin: Austin Capital Management, Ltd. NASDAQ: The NASDAQ Stock Market LLC. BHCs: Bank holding companies. N/M: Not meaningful. Board: KeyCorp Board of Directors. NOW: Negotiable Order of Withdrawal. CCAR: Comprehensive Capital Analysis and Review. NYSE: New York Stock Exchange. CMBS: Commercial mortgage-backed securities. OCC: Office of the Comptroller of the Currency. CMO: Collateralized mortgage obligation. OCI: Other comprehensive income (loss). Common shares: KeyCorp common shares, $1 par value. OREO: Other real estate owned. Dodd-Frank Act: Dodd-Frank Wall Street Reform and OTTI: Other-than-temporary impairment. Consumer Protection Act of 2010. PBO: Projected benefit obligation. EBITDA: Earnings before interest, taxes, depreciation, and PCI: Purchased credit impaired. amortization. S&P: Standard and Poor’s Ratings Services, a Division of The EPS: Earnings per share. McGraw-Hill Companies, Inc. ERM: Enterprise risk management. SEC: U.S. Securities and Exchange Commission. EVE: Economic value of equity. Series A Preferred Stock: KeyCorp’s 7.750% Noncumulative FASB: Financial Accounting Standards Board. Perpetual Convertible Preferred Stock, Series A. FDIC: Federal Deposit Insurance Corporation. SIFIs: Systemically important financial institutions, including Federal Reserve: Board of Governors of the Federal Reserve BHCs with total consolidated assets of at least $50 billion System. and nonbank financial companies designated by FSOC for FHLMC: Federal Home Loan Mortgage Corporation. supervision by the Federal Reserve. FNMA: Federal National Mortgage Association, or Fannie Mae. TDR: Troubled debt restructuring. FSOC: Financial Stability Oversight Council. TE: Taxable-equivalent. GAAP: U.S. generally accepted accounting principles. U.S. Treasury: United States Department of the Treasury. GNMA: Government National Mortgage Association. VaR: Value at risk. ISDA: International Swaps and Derivatives Association. VEBA: Voluntary Employee Beneficiary Association. KAHC: Key Affordable Housing Corporation. Victory: Victory Capital Management and/or KEF: Key Equipment Finance. Victory Capital Advisors. KREEC: Key Real Estate Equity Capital, Inc. VIE: Variable interest entity. The consolidated financial statements include the accounts of KeyCorp and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Some previously reported amounts have been reclassified to conform to current reporting practices. The consolidated financial statements include any voting rights entities in which we have a controlling financial interest. In accordance with the applicable accounting guidance for consolidations, we consolidate a VIE if we have: (i) a variable interest in the entity; (ii) the power to direct activities of the VIE that most significantly impact the entity’s economic performance; and (iii) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE (i.e., we are considered to be the primary beneficiary). Variable interests can include equity interests, subordinated debt, derivative contracts, leases, service agreements, guarantees, standby letters of credit, loan commitments, and other contracts, agreements, and financial instruments. See Note 9 (“Variable Interest Entities”) for information on our involvement with VIEs. We use the equity method to account for unconsolidated investments in voting rights entities or VIEs if we have significant influence over the entity’s operating and financing decisions (usually defined as a voting or economic interest of 20% to 50%, but not controlling). Unconsolidated investments in voting rights entities or VIEs in which we have a voting or economic interest of less than 20% generally are carried at cost. Investments held by our registered broker-dealer and investment company subsidiaries (principal investing entities and Real Estate Capital line of business) are carried at fair value. We believe that the unaudited consolidated interim financial statements reflect all adjustments of a normal recurring nature and disclosures that are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim period are not necessarily indicative of the results of operations to be expected for the full year. The interim financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our 2014 Form 10-K. In preparing these financial statements, subsequent events were evaluated through the time the financial statements were issued. Financial statements are considered issued when they are widely distributed to all shareholders and other financial statement users, or filed with the SEC. Offsetting Derivative Positions In accordance with the applicable accounting guidance, we take into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts held with a single counterparty on a net basis, and to offset the net derivative position with the related cash collateral when recognizing derivative assets and liabilities. Additional information regarding derivative offsetting is provided in Note 7 (“Derivatives and Hedging Activities”). Accounting Guidance Adopted in 2015 Troubled debt restructurings. Transfers and servicing of financial assets. Discontinued operations. Investments in qualified affordable housing projects. Troubled debt restructurings. Accounting Guidance Pending Adoption at June 30, 2015 Fair value measurement. Cloud computing fees. Imputation of interest. Consolidation. Derivatives and hedging. Going concern. Consolidation. Stock-based compensation. Revenue recognition.

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Common Share	2. Earnings Per Common Share Basic earnings per share is the amount of earnings (adjusted for dividends declared on our preferred stock) available to each common share outstanding during the reporting periods. Diluted earnings per share is the amount of earnings available to each common share outstanding during the reporting periods adjusted to include the effects of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issued for the conversion of our convertible Series A Preferred Stock, stock options, and other stock-based awards. Potentially dilutive common shares are excluded from the computation of diluted earnings per share in the periods where the effect would be antidilutive. For diluted earnings per share, net income available to common shareholders can be affected by the conversion of our convertible Series A Preferred Stock. Where the effect of this conversion would be dilutive, net income available to common shareholders is adjusted by the amount of preferred dividends associated with our Series A Preferred Stock. Our basic and diluted earnings per common share are calculated as follows: Three months ended June 30, Six months ended June 30, dollars in millions, except per share amounts 2015 2014 2015 2014 EARNINGS Income (loss) from continuing operations $ 236 $ 253 $ 466 $ 491 Less: Net income (loss) attributable to noncontrolling interests 1 6 3 6 Income (loss) from continuing operations attributable to Key 235 247 463 485 Less: Dividends on Series A Preferred Stock 5 5 11 11 Income (loss) from continuing operations attributable to Key common shareholders 230 242 452 474 Income (loss) from discontinued operations, net of taxes (a) 3 (28 ) 8 (24 ) Net income (loss) attributable to Key common shareholders $ 233 $ 214 $ 460 $ 450 WEIGHTED-AVERAGE COMMON SHARES Weighted-average common shares outstanding (000) 839,454 875,298 843,992 879,986 Effect of convertible preferred stock — 20,602 — — Effect of common share options and other stock awards 6,858 6,237 7,695 6,698 Weighted-average common shares and potential common shares outstanding (000) (b) 846,312 902,137 851,687 886,684 EARNINGS PER COMMON SHARE Income (loss) from continuing operations attributable to Key common shareholders $ .27 $ .28 $ .53 $ .54 Income (loss) from discontinued operations, net of taxes (a) — (.03 ) .01 (.03 ) Net income (loss) attributable to Key common shareholders (c) .28 .24 .54 .51 Income (loss) from continuing operations attributable to Key common shareholders — assuming dilution $ .27 $ .27 $ .52 $ .53 Income (loss) from discontinued operations, net of taxes (a) — (.03 ) .01 (.03 ) Net income (loss) attributable to Key common shareholders — assuming dilution (c) .27 .24 .53 .51 (a) In April 2009, we decided to wind down the operations of Austin, a subsidiary that specialized in managing hedge fund investments for institutional customers. In September 2009, we decided to discontinue the education lending business conducted through Key Education Resources, the education payment and financing unit of KeyBank. In February 2013, we decided to sell Victory to a private equity fund. As a result of these decisions, we have accounted for these businesses as discontinued operations. For further discussion regarding the income (loss) from discontinued operations, see Note 11 (“Acquisitions and Discontinued Operations”). (b) Assumes conversion of common share options and other stock awards and/or convertible preferred stock, as applicable. (c) EPS may not foot due to rounding.

Loans and Loans Held for Sale

Loans and Loans Held for Sale	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Loans and Loans Held for Sale	3. Loans and Loans Held for Sale Our loans by category are summarized as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Commercial, financial and agricultural (a) $ 29,285 $ 27,982 $ 26,327 Commercial real estate: Commercial mortgage 7,874 8,047 7,946 Construction 1,254 1,100 1,047 Total commercial real estate loans 9,128 9,147 8,993 Commercial lease financing (b) 4,010 4,252 4,241 Total commercial loans 42,423 41,381 39,561 Residential — prime loans: Real estate — residential mortgage 2,252 2,225 2,189 Home equity: Key Community Bank 10,296 10,366 10,379 Other 236 267 300 Total home equity loans 10,532 10,633 10,679 Total residential — prime loans 12,784 12,858 12,868 Consumer other — Key Community Bank 1,595 1,560 1,514 Credit cards 753 754 718 Consumer other: Marine 673 779 888 Other 36 49 51 Total consumer other 709 828 939 Total consumer loans 15,841 16,000 16,039 Total loans (c) (d) $ 58,264 $ 57,381 $ 55,600 (a) Loan balances include $89 million, $88 million, and $94 million of commercial credit card balances at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. (b) Commercial lease financing includes receivables held as collateral for a secured borrowing of $191 million, $302 million, and $375 million at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. Principal reductions are based on the cash payments received from these related receivables. Additional information pertaining to this secured borrowing is included in Note 18 (“Long-Term Debt”) beginning on page 202 of our 2014 Form 10-K. (c) At June 30, 2015, total loans include purchased loans of $125 million, of which $12 million were PCI loans. At December 31, 2014, total loans include purchased loans of $138 million, of which $13 million were PCI loans. At June 30, 2014, total loans include purchased loans of $151 million, of which $15 million were PCI loans. (d) Total loans exclude loans of $2 billion at June 30, 2015, $2.3 billion at December 31, 2014, and $4.2 billion at June 30, 2014, related to the discontinued operations of the education lending business. Additional information pertaining to these loans is provided in Note 11 (“Acquisitions and Discontinued Operations”). Our loans held for sale are summarized as follows: in millions June 30, December 31, June 30, Commercial, financial and agricultural $ 217 $ 63 $ 181 Real estate — commercial mortgage 576 638 221 Commercial lease financing 7 15 10 Real estate — residential mortgage 35 18 23 Total loans held for sale (a) $ 835 $ 734 $ 435 (a) Total loans held for sale exclude loans held for sale of $179 million at June 30, 2015, related to the discontinued operations of the education lending business. Additional information pertaining to these loans is provided in Note 11. Our quarterly summary of changes in loans held for sale follows: June 30, December 31, June 30, in millions 2015 2014 2014 Balance at beginning of the period $ 1,649 $ 784 $ 401 New originations 1,650 2,465 978 Transfers from (to) held to maturity, net 6 2 (8 ) Loan sales (2,466 ) (2,516 ) (934 ) Loan draws (payments), net (4 ) (1 ) (2 ) Balance at end of period (a) $ 835 $ 734 $ 435 (a) Total loans held for sale exclude loans held for sale of $179 million at June 30, 2015, related to the discontinued operations of the education lending business. Additional information pertaining to these loans is provided in Note 11.

Asset Quality

Asset Quality	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Asset Quality	4. Asset Quality We assess the credit quality of the loan portfolio by monitoring net credit losses, levels of nonperforming assets and delinquencies, and credit quality ratings as defined by management. Nonperforming loans are loans for which we do not accrue interest income, and include commercial and consumer loans and leases, as well as current year TDRs and nonaccruing TDR loans from prior years. Nonperforming loans do not include loans held for sale or PCI loans. Nonperforming assets include nonperforming loans, nonperforming loans held for sale, OREO, and other nonperforming assets. Our nonperforming assets and past due loans were as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Total nonperforming loans (a), (b) $ 419 $ 418 $ 396 Nonperforming loans held for sale — — 1 OREO (c) 20 18 12 Other nonperforming assets 1 — 1 Total nonperforming assets $ 440 $ 436 $ 410 Nonperforming assets from discontinued operations — education lending (d) $ 6 $ 11 $ 19 Restructured loans included in nonperforming loans $ 170 $ 157 $ 142 Restructured loans with an allocated specific allowance (e) 79 82 59 Specifically allocated allowance for restructured loans (f) 36 34 30 Accruing loans past due 90 days or more $ 66 $ 96 $ 83 Accruing loans past due 30 through 89 days 181 235 274 (a) Loan balances exclude $12 million, $13 million, and $15 million of PCI loans at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. (b) Includes carrying value of consumer residential mortgage loans in the process of foreclosure of approximately $116 million at June 30, 2015. (c) Includes carrying value of foreclosed residential real estate of approximately $15 million at June 30, 2015. (d) Restructured loans of approximately $19 million, $17 million, and $18 million are included in discontinued operations at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. See Note 11 (“Acquisitions and Discontinued Operations”) for further discussion. (e) Included in individually impaired loans allocated a specific allowance. (f) Included in allowance for individually evaluated impaired loans. We evaluate purchased loans for impairment in accordance with the applicable accounting guidance. Purchased loans that have evidence of deterioration in credit quality since origination and for which it is probable, at acquisition, that all contractually required payments will not be collected are deemed PCI and initially recorded at fair value without recording an allowance for loan losses. At the 2012 acquisition date, the estimated gross contractual amount receivable of all PCI loans totaled $41 million. The estimated cash flows not expected to be collected (the nonaccretable amount) were $11 million, and the accretable amount was approximately $5 million. The difference between the fair value and the cash flows expected to be collected from the purchased loans is accreted to interest income over the remaining term of the loans. At June 30, 2015, the outstanding unpaid principal balance and carrying value of all PCI loans was $18 million and $12 million, respectively. Changes in the accretable yield during the first six months of 2015 included accretion and net reclassifications of less than $1 million, resulting in an ending balance of $5 million at June 30, 2015. At June 30, 2015, the approximate carrying amount of our commercial nonperforming loans outstanding represented 76% of their original contractual amount owed, total nonperforming loans outstanding represented 80% of their original contractual amount owed, and nonperforming assets in total were carried at 80% of their original contractual amount owed. At June 30, 2015, our 20 largest nonperforming loans totaled $120 million, representing 29% of total loans on nonperforming status. At June 30, 2014, our 20 largest nonperforming loans totaled $55 million, representing 14% of total loans on nonperforming status. Nonperforming loans and loans held for sale reduced expected interest income by $8 million for the six months ended June 30, 2015, and $16 million for the year ended December 31, 2014. The following tables set forth a further breakdown of individually impaired loans as of June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 in millions Recorded Unpaid Principal Specific Average Recorded Investment (a) Balance (b) Allowance Investment With no related allowance recorded: Commercial, financial and agricultural $ 9 $ 56 — $ 15 Commercial real estate: Commercial mortgage 10 14 — 12 Construction 7 7 — 7 Total commercial real estate loans 17 21 — 19 Total commercial loans 26 77 — 34 Real estate — residential mortgage 22 22 — 22 Home equity: Key Community Bank 60 60 — 61 Other 2 2 — 2 Total home equity loans 62 62 — 63 Consumer other: Marine 1 1 — 1 Total consumer other 1 1 — 1 Total consumer loans 85 85 — 86 Total loans with no related allowance recorded 111 162 — 120 With an allowance recorded: Commercial, financial and agricultural 73 86 $ 24 67 Commercial real estate: Commercial mortgage 6 7 1 6 Total commercial real estate loans 6 7 1 6 Total commercial loans 79 93 25 73 Real estate — residential mortgage 33 33 5 33 Home equity: Key Community Bank 53 53 17 51 Other 10 10 2 11 Total home equity loans 63 63 19 62 Consumer other — Key Community Bank 3 3 — 3 Credit cards 3 3 — 3 Consumer other: Marine 40 40 3 40 Other 2 2 — 2 Total consumer other 42 42 3 42 Total consumer loans 144 144 27 143 Total loans with an allowance recorded 223 237 52 216 Total $ 334 $ 399 $ 52 $ 336 (a) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on our consolidated balance sheet. (b) The Unpaid Principal Balance represents the customer’s legal obligation to us. Unpaid Average December 31, 2014 in millions Recorded Principal Specific Recorded Investment (a) Balance (b) Allowance Investment With no related allowance recorded: Commercial, financial and agricultural $ 6 $ 17 — $ 8 Commercial real estate: Commercial mortgage 15 20 — 19 Construction 5 6 — 7 Total commercial real estate loans 20 26 — 26 Total commercial loans 26 43 — 34 Real estate — residential mortgage 24 24 — 30 Home equity: Key Community Bank 62 63 — 63 Other 1 1 — 2 Total home equity loans 63 64 — 65 Consumer other: Marine 2 2 — 2 Total consumer other 2 2 — 2 Total consumer loans 89 90 — 97 Total loans with no related allowance recorded 115 133 — 131 With an allowance recorded: Commercial, financial and agricultural 37 37 $ 9 28 Commercial real estate: Commercial mortgage 6 6 2 6 Construction 3 3 1 2 Total commercial real estate loans 9 9 3 8 Total commercial loans 46 46 12 36 Real estate — residential mortgage 31 31 5 25 Home equity: Key Community Bank 46 46 16 43 Other 11 11 2 11 Total home equity loans 57 57 18 54 Consumer other — Key Community Bank 4 4 — 3 Credit cards 4 4 — 4 Consumer other: Marine 43 43 5 45 Other 2 2 — 2 Total consumer other 45 45 5 47 Total consumer loans 141 141 28 133 Total loans with an allowance recorded 187 187 40 169 Total $ 302 $ 320 $ 40 $ 300 (a) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on our consolidated balance sheet. (b) The Unpaid Principal Balance represents the customer’s legal obligation to us. Unpaid Average June 30, 2014 in millions Recorded Principal Specific Recorded Investment (a) Balance (b) Allowance Investment With no related allowance recorded: Commercial, financial and agricultural $ 12 $ 18 — $ 23 Commercial real estate: Commercial mortgage 23 28 — 23 Construction 6 17 — 6 Total commercial real estate loans 29 45 — 29 Total commercial loans 41 63 — 52 Real estate — residential mortgage 25 25 — 26 Home equity: Key Community Bank 66 66 — 68 Other 2 2 — 2 Total home equity loans 68 68 — 70 Consumer other: Marine 2 2 — 2 Total consumer other 2 2 — 2 Total consumer loans 95 95 — 98 Total loans with no related allowance recorded 136 158 — 150 With an allowance recorded: Commercial, financial and agricultural 5 7 $ 3 6 Commercial real estate: Commercial mortgage 2 3 1 2 Construction — — — — Total commercial real estate loans 2 3 1 2 Total commercial loans 7 10 4 8 Real estate — residential mortgage 29 29 5 28 Home equity: Key Community Bank 37 37 15 36 Other 11 11 3 11 Total home equity loans 48 48 18 47 Consumer other — Key Community Bank 3 3 — 3 Credit cards 4 4 — 4 Consumer other: Marine 48 48 5 49 Other 1 1 — 1 Total consumer other 49 49 5 50 Total consumer loans 133 133 28 132 Total loans with an allowance recorded 140 143 32 140 Total $ 276 $ 301 $ 32 $ 290 (a) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on our consolidated balance sheet. (b) The Unpaid Principal Balance represents the customer’s legal obligation to us. For the six months ended June 30, 2015, and June 30, 2014, interest income recognized on the outstanding balances of accruing impaired loans totaled $3 million and $4 million, respectively. At June 30, 2015, aggregate restructured loans (accrual and nonaccrual loans) totaled $300 million, compared to $270 million at December 31, 2014, and $266 million at June 30, 2014. We added $73 million in restructured loans during the first six months of 2015, which were offset by $43 million in payments and charge-offs. A further breakdown of TDRs included in nonperforming loans by loan category as of June 30, 2015, follows: Pre-modification Post-modification Outstanding Outstanding June 30, 2015 Number Recorded Recorded dollars in millions of Loans Investment Investment LOAN TYPE Nonperforming: Commercial, financial and agricultural 12 $ 74 $ 58 Commercial real estate: Real estate — commercial mortgage 12 32 8 Total commercial real estate loans 12 32 8 Total commercial loans 24 106 66 Real estate — residential mortgage 352 21 21 Home equity: Key Community Bank 1,076 77 70 Other 117 3 3 Total home equity loans 1,193 80 73 Consumer other — Key Community Bank 28 1 1 Credit cards 289 2 2 Consumer other: Marine 104 8 7 Other 21 1 — Total consumer other 125 9 7 Total consumer loans 1,987 113 104 Total nonperforming TDRs 2,011 219 170 Prior-year accruing: (a) Commercial, financial and agricultural 14 6 3 Commercial real estate: Real estate — commercial mortgage 1 2 1 Total commercial real estate loans 1 2 1 Total commercial loans 15 8 4 Real estate — residential mortgage 491 36 36 Home equity: Key Community Bank 807 48 42 Other 331 10 8 Total home equity loans 1,138 58 50 Consumer other — Key Community Bank 48 2 2 Credit cards 489 3 2 Consumer other: Marine 419 60 34 Other 73 2 2 Total consumer other 492 62 36 Total consumer loans 2,658 161 126 Total prior-year accruing TDRs 2,673 169 130 Total TDRs 4,684 $ 388 $ 300 (a) All TDRs that were restructured prior to January 1, 2015, and are fully accruing. A further breakdown of TDRs included in nonperforming loans by loan category as of December 31, 2014, follows: December 31, 2014 dollars in millions Number Pre-modification Post-modification LOAN TYPE Nonperforming: Commercial, financial and agricultural 14 $ 25 $ 23 Commercial real estate: Real estate — commercial mortgage 10 38 13 Real estate — construction 1 5 — Total commercial real estate loans 11 43 13 Total commercial loans 25 68 36 Real estate — residential mortgage 453 27 27 Home equity: Key Community Bank 1,184 79 72 Other 158 4 4 Total home equity loans 1,342 83 76 Consumer other — Key Community Bank 37 2 1 Credit cards 290 2 2 Consumer other: Marine 206 17 14 Other 38 1 1 Total consumer other 244 18 15 Total consumer loans 2,366 132 121 Total nonperforming TDRs 2,391 200 157 Prior-year accruing: (a) Commercial, financial and agricultural 20 6 3 Commercial real estate: Real estate — commercial mortgage 1 2 1 Total commercial real estate loans 1 2 1 Total commercial loans 21 8 4 Real estate — residential mortgage 381 29 29 Home equity: Key Community Bank 674 41 36 Other 310 9 8 Total home equity loans 984 50 44 Consumer other — Key Community Bank 45 2 2 Credit cards 514 4 2 Consumer other: Marine 373 54 31 Other 67 2 1 Total consumer other 440 56 32 Total consumer loans 2,364 141 109 Total prior-year accruing TDRs 2,385 149 113 Total TDRs 4,776 $ 349 $ 270 (a) All TDRs that were restructured prior to January 1, 2014, and are fully accruing. A further breakdown of TDRs included in nonperforming loans by loan category as of June 30, 2014, follows: June 30, 2014 dollars in millions Number Pre-modification Post-modification LOAN TYPE Nonperforming: Commercial, financial and agricultural 24 $ 20 $ 10 Commercial real estate: Real estate — commercial mortgage 11 40 14 Real estate — construction 3 15 2 Total commercial real estate loans 14 55 16 Total commercial loans 38 75 26 Real estate — residential mortgage 521 34 34 Home equity: Key Community Bank 1,086 68 64 Other 126 4 3 Total home equity loans 1,212 72 67 Consumer other — Key Community Bank 33 1 1 Credit cards 60 — — Consumer other: Marine 207 15 13 Other 36 1 1 Total consumer other 243 16 14 Total consumer loans 2,069 123 116 Total nonperforming TDRs 2,107 198 142 Prior-year accruing: (a) Commercial, financial and agricultural 32 7 3 Commercial real estate: Real estate — commercial mortgage 4 17 9 Total commercial real estate loans 4 17 9 Total commercial loans 36 24 12 Real estate — residential mortgage 287 21 21 Home equity: Key Community Bank 759 43 39 Other 322 10 8 Total home equity loans 1,081 53 47 Consumer other — Key Community Bank 54 2 2 Credit cards 653 5 3 Consumer other: Marine 428 60 37 Other 73 2 2 Total consumer other 501 62 39 Total consumer loans 2,576 143 112 Total prior-year accruing TDRs 2,612 167 124 Total TDRs 4,719 $ 365 $ 266 (a) All TDRs that were restructured prior to January 1, 2014, and are fully accruing. We classify loan modifications as TDRs when a borrower is experiencing financial difficulties and we have granted a concession without commensurate financial, structural, or legal consideration. All commercial and consumer loan TDRs, regardless of size, are individually evaluated for impairment to determine the probable loss content and are assigned a specific loan allowance if deemed appropriate. This designation has the effect of moving the loan from the general reserve methodology (i.e., collectively evaluated) to the specific reserve methodology (i.e., individually evaluated) and may impact the ALLL through a charge-off or increased loan loss provision. These components affect the ultimate allowance level. Additional information regarding TDRs for discontinued operations is provided in Note 11. Commercial loan TDRs are considered defaulted when principal and interest payments are 90 days past due. Consumer loan TDRs are considered defaulted when principal and interest payments are more than 60 days past due. During the three months ended June 30, 2015, there were no significant commercial loan TDRs, and 65 consumer loan TDRs with a combined recorded investment of $3 million that experienced payment defaults from modifications resulting in TDR status during 2014. During the three months ended June 30, 2014, there were no significant commercial loan TDRs, and 107 consumer loan TDRs with a combined recorded investment of $4 million that experienced payment defaults from modifications resulting in TDR status during 2013. As TDRs are individually evaluated for impairment under the specific reserve methodology, subsequent defaults do not generally have a significant additional impact on the ALLL. Our loan modifications are handled on a case-by-case basis and are negotiated to achieve mutually agreeable terms that maximize loan collectability and meet the borrower’s financial needs. Our concession types are primarily interest rate reductions, forgiveness of principal, and other modifications. The commercial TDR other concession category includes modification of loan terms, covenants, or conditions. The consumer TDR other concession category primarily includes those borrowers’ debts that are discharged through Chapter 7 bankruptcy and have not been formally re-affirmed. The following table shows the post-modification outstanding recorded investment by concession type for our commercial and consumer accruing and nonaccruing TDRs and other selected financial data. in millions June 30, December 31, June 30, Commercial loans: Interest rate reduction $ 60 $ 13 $ 27 Forgiveness of principal 2 2 5 Other 8 25 6 Total $ 70 $ 40 $ 38 Consumer loans: Interest rate reduction $ 142 $ 140 $ 139 Forgiveness of principal 4 4 4 Other 84 86 85 Total $ 230 $ 230 $ 228 Total commercial and consumer TDRs (a) $ 300 $ 270 $ 266 Total loans 58,264 57,381 55,600 (a) Commitments outstanding to lend additional funds to borrowers whose loan terms have been modified in TDRs are $8 million, $5 million, and $1 million at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. Our policies for determining past due loans, placing loans on nonaccrual, applying payments on nonaccrual loans, and resuming accrual of interest for our commercial and consumer loan portfolios are disclosed in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Nonperforming Loans” beginning on page 116 of our 2014 Form 10-K. At June 30, 2015, approximately $57.6 billion, or 98.8%, of our total loans were current, compared to $56.6 billion, or 98.7%, at December 31, 2014, and $54.8 billion, or 98.6%, at June 30, 2014. At June 30, 2015, total past due loans and nonperforming loans of $666 million represented approximately 1.2% of total loans, compared to $749 million, or 1.3%, at December 31, 2014, and $753 million, or 1.4% at June 30, 2014. The following aging analysis of past due and current loans as of June 30, 2015, December 31, 2014, and June 30, 2014, provides further information regarding Key’s credit exposure. June 30, 2015 in millions Current 30-59 60-89 90 and Nonperforming Total Past Due and Nonperforming Purchased Total LOAN TYPE Commercial, financial and agricultural $ 29,137 $ 26 $ 5 $ 17 $ 100 $ 148 — $ 29,285 Commercial real estate: Commercial mortgage 7,823 6 2 17 26 51 — 7,874 Construction 1,242 — — — 12 12 — 1,254 Total commercial real estate loans 9,065 6 2 17 38 63 — 9,128 Commercial lease financing 3,967 20 3 2 18 43 — 4,010 Total commercial loans $ 42,169 $ 52 $ 10 $ 36 $ 156 $ 254 — $ 42,423 Real estate — residential mortgage $ 2,155 $ 13 $ 3 $ 3 $ 67 $ 86 $ 11 $ 2,252 Home equity: Key Community Bank 10,043 43 22 11 176 252 1 10,296 Other 221 4 2 1 8 15 — 236 Total home equity loans 10,264 47 24 12 184 267 1 10,532 Consumer other — Key Community Bank 1,577 8 3 6 1 18 — 1,595 Credit cards 735 5 3 8 2 18 — 753 Consumer other: Marine 651 10 3 1 8 22 — 673 Other 35 — — — 1 1 — 36 Total consumer other 686 10 3 1 9 23 — 709 Total consumer loans $ 15,417 $ 83 $ 36 $ 30 $ 263 $ 412 $ 12 $ 15,841 Total loans $ 57,586 $ 135 $ 46 $ 66 $ 419 $ 666 $ 12 $ 58,264 December 31, 2014 in millions Current 30-59 60-89 90 and Nonperforming Total Past Due and Purchased Total LOAN TYPE Commercial, financial and agricultural $ 27,858 $ 19 $ 14 $ 32 $ 59 $ 124 — $ 27,982 Commercial real estate: Commercial mortgage 7,981 6 10 16 34 66 — 8,047 Construction 1,084 2 — 1 13 16 — 1,100 Total commercial real estate loans 9,065 8 10 17 47 82 — 9,147 Commercial lease financing 4,172 30 21 11 18 80 — 4,252 Total commercial loans $ 41,095 $ 57 $ 45 $ 60 $ 124 $ 286 — $ 41,381 Real estate — residential mortgage $ 2,111 $ 12 $ 7 $ 4 $ 79 $ 102 $ 12 $ 2,225 Home equity: Key Community Bank 10,098 46 22 14 185 267 1 10,366 Other 249 5 2 1 10 18 — 267 Total home equity loans 10,347 51 24 15 195 285 1 10,633 Consumer other — Key Community Bank 1,541 9 3 5 2 19 — 1,560 Credit cards 733 6 4 9 2 21 — 754 Consumer other: Marine 746 11 5 2 15 33 — 779 Other 46 1 — 1 1 3 — 49 Total consumer other 792 12 5 3 16 36 — 828 Total consumer loans $ 15,524 $ 90 $ 43 $ 36 $ 294 $ 463 $ 13 $ 16,000 Total loans $ 56,619 $ 147 $ 88 $ 96 $ 418 $ 749 $ 13 $ 57,381 June 30, 2014 in millions Current 30-59 60-89 90 and Nonperforming Total Past Due and Purchased Total LOAN TYPE Commercial, financial and agricultural $ 26,212 $ 52 $ 11 $ 15 $ 37 $ 115 — $ 26,327 Commercial real estate: Commercial mortgage 7,855 18 15 19 38 90 $ 1 7,946 Construction 1,029 2 2 5 9 18 — 1,047 Total commercial real estate loans 8,884 20 17 24 47 108 1 8,993 Commercial lease financing 4,186 32 4 4 15 55 — 4,241 Total commercial loans $ 39,282 $ 104 $ 32 $ 43 $ 99 $ 278 $ 1 $ 39,561 Real estate — residential mortgage $ 2,061 $ 16 $ 6 $ 4 $ 89 $ 115 $ 13 $ 2,189 Home equity: Key Community Bank 10,115 46 22 17 178 263 1 10,379 Other 281 5 2 1 11 19 — 300 Total home equity loans 10,396 51 24 18 189 282 1 10,679 Consumer other — Key Community Bank 1,493 9 4 6 2 21 — 1,514 Credit cards 698 6 4 9 1 20 — 718 Consumer other: Marine 855 13 3 2 15 33 — 888 Other 47 1 1 1 1 4 — 51 Total consumer other 902 14 4 3 16 37 — 939 Total consumer loans $ 15,550 $ 96 $ 42 $ 40 $ 297 $ 475 $ 14 $ 16,039 Total loans $ 54,832 $ 200 $ 74 $ 83 $ 396 $ 753 $ 15 $ 55,600 The prevalent risk characteristic for both commercial and consumer loans is the risk of loss arising from an obligor’s inability or failure to meet contractual payment or performance terms. Evaluation of this risk is stratified and monitored by the loan risk rating grades assigned for the commercial loan portfolios and the regulatory risk ratings assigned for the consumer loan portfolios. Most extensions of credit are subject to loan grading or scoring. Loan grades are assigned at the time of origination, verified by credit risk management, and periodically re-evaluated thereafter. This risk rating methodology blends our judgment with quantitative modeling. Commercial loans generally are assigned two internal risk ratings. The first rating reflects the probability that the borrower will default on an obligation; the second rating reflects expected recovery rates on the credit facility. Default probability is determined based on, among other factors, the financial strength of the borrower, an assessment of the borrower’s management, the borrower’s competitive position within its industry sector, and our view of industry risk in the context of the general economic outlook. Types of exposure, transaction structure, and collateral, including credit risk mitigants, affect the expected recovery assessment. Credit quality indicators for loans are updated on an ongoing basis. Bond rating classifications are indicative of the credit quality of our commercial loan portfolios and are determined by converting our internally assigned risk rating grades to bond rating categories. Payment activity and the regulatory classifications of pass and substandard are indicators of the credit quality of our consumer loan portfolios. Credit quality indicators for our commercial and consumer loan portfolios, excluding $12 million and $15 million of PCI loans at June 30, 2015, and June 30, 2014, respectively, based on bond rating, regulatory classification, and payment activity as of June 30, 2015, and June 30, 2014, are as follows: Commercial Credit Exposure Credit Risk Profile by Creditworthiness Category (a) June 30, in millions Commercial, financial RE —Commercial RE —Construction Commercial Lease Total RATING (b), (c) 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 AAA — AA $ 396 $ 364 $ 3 $ 3 $ 1 $ 1 $ 504 $ 712 $ 904 $ 1,080 A 1,189 1,091 4 1 — 1 484 382 1,677 1,475 BBB — BB 25,931 23,534 7,318 7,412 1,084 907 2,853 2,968 37,186 34,821 B 653 545 278 287 138 99 103 99 1,172 1,030 CCC — C 1,116 793 271 242 31 39 66 80 1,484 1,154 Total $ 29,285 $ 26,327 $ 7,874 $ 7,945 $ 1,254 $ 1,047 $ 4,010 $ 4,241 $ 42,423 $ 39,560 (a) Credit quality indicators are updated on an ongoing basis and reflect credit quality information as of the dates indicated. (b) Our bond rating to internal loan grade conversion system is as follows: AAA - AA = 1, A = 2, BBB - BB = 3 - 13, B = 14 - 16, and CCC - C = 17 - 20. (c) Our internal loan grade to regulatory-defined classification is as follows: Pass = 1-16, Special Mention = 17, Substandard = 18, Doubtful = 19, and Loss = 20. Consumer Credit Exposure Credit Risk Profile by Regulatory Classifications (a), (b) June 30, in millions Residential — Prime GRADE 2015 2014 Pass $ 12,506 $ 12,554 Substandard 266 300 Total $ 12,772 $ 12,854 Credit Risk Profile Based on Payment Activity (a) June 30, in millions Consumer — Key Credit cards Consumer —Marine Consumer — Other Total 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 Performing $ 1,594 $ 1,512 $ 751 $ 717 $ 665 $ 873 $ 35 $ 50 $ 3,045 $ 3,152 Nonperforming 1 2 2 1 8 15 1 1 12 19 Total $ 1,595 $ 1,514 $ 753 $ 718 $ 673 $ 888 $ 36 $ 51 $ 3,057 $ 3,171 (a) Credit quality indicators are updated on an ongoing basis and reflect credit quality information as of the dates indicated. (b) Our past due payment activity to regulatory classification conversion is as follows: pass = less than 90 days; and substandard = 90 days and greater plus nonperforming loans. We determine the appropriate level of the ALLL on at least a quarterly basis. The methodology is described in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Allowance for Loan and Lease Losses” beginning on page 117 of our 2014 Form 10-K. We apply expected loss rates to existing loans with similar risk characteristics as noted in the credit quality indicator table above and exercise judgment to assess the impact of factors such as changes in economic conditions, changes in credit policies or underwriting standards, and changes in the level of credit risk associated with specific industries and markets. For all commercial and consumer loan TDRs, regardless of size, as well as impaired commercial loans with an outstanding balance of $2.5 million or greater, we conduct further analysis to determine the probable loss content and assign a specific allowance to the loan if deemed appropriate. We estimate the extent of the individual impairment for commercial loans and TDRs by comparing the recorded investment of the loan with the estimated present value of its future cash flows, the fair value of its underlying collateral, or the loan’s observable market price. Secured consumer loan TDRs that are discharged through Chapter 7 bankruptcy and not formally re-affirmed are adjusted to reflect the fair value of the underlying collateral, less costs to sell. Non-Chapter 7 consumer loan TDRs are combined in homogenous pools and assigned a specific allocation based on the estimated present value of future cash flows using the loan’s effective interest rate. A specific allowance also may be assigned — even when sources of repayment appear sufficient — if we remain uncertain about whether the loan will be repaid in full. On at least a quarterly basis, we evaluate the appropriateness of our loss estimation methods to reduce differences between estimated incurred losses and actual losses. The ALLL at June 30, 2015, represents our best estimate of the probable credit losses inherent in the loan portfolio at that date. Although quantitative modeling factors such as default probability and expected recovery rates are constantly changing as the financial strength of the borrower and overall economic conditions change, we have not changed the accounting policies or methodology that we use to estimate the ALLL. Commercial loans generally are charged off in full or charged down to the fair value of the underlying collateral when the borrower’s payment is 180 days past due. Consumer loans generally are charged off when payments are 120 days past due. Home equity and residential mortgage loans generally are charged down to the fair value of the underlying collateral when payment is 180 days past due. Credit card loans, and similar unsecured products, are charged off when payments are 180 days past due. At June 30, 2015, the ALLL was $796 million, or 1.37% of loans, compared to $814 million, or 1.46% of loans, at June 30, 2014. At June 30, 2015, the ALLL was 190% of nonperforming loans, compared to 205.6% at June 30, 2014. A summary of the changes in the ALLL for the periods indicated is presented in the table below: Three months Six months in millions 2015 2014 2015 2014 Balance at beginning of period — continuing operations $ 794 $ 834 $ 794 $ 848 Charge-offs (52 ) (56 ) (99 ) (113 ) Recoveries 16 26 35 63 Net loans and leases charged off (36 ) (30 ) (64 ) (50 ) Provision for loan and lease losses from continuing operations 37 10 66 16 Foreign currency translation adjustment 1 — — — Balance at end of period — continuing operations $ 796 $ 814 $ 796 $ 814 The changes in the ALLL by loan category for the periods indicated are as follows: in millions December 31, Provision Charge-offs Recoveries June 30, Commercial, financial and agricultural $ 391 $ 49 $ (33 ) $ 11 $ 418 Real estate — commercial mortgage 148 (4 ) (2 ) 2 144 Real estate — construction 28 3 (1 ) 1 31 Commercial lease financing 56 (5 ) (3 ) 5 53 Total commercial loans 623 43 (39 ) 19 646 Real estate — residential mortgage 23 (1 ) (3 ) 1 20 Home equity: Key Community Bank 66 3 (15 ) 3 57 Other 5 — (3 ) 2 4 Total home equity loans 71 3 (18 ) 5 61 Consumer other — Key Community Bank 22 7 (12 ) 4 21 Credit cards 33 13 (16 ) 1 31 Consumer other: Marine 21 — (10 ) 5 16 Other 1 1 (1 ) — 1 Total consumer other: 22 1 (11 ) 5 17 Total consumer loans 171 23 (60 ) 16 150 Total ALLL — continuing operations 794 66 (a) (99 ) 35 796 Discontinued operations 29 1 (16 ) 8 22 Total ALLL — including discontinued operations $ 823 $ 67 $ (115 ) $ 43 $ 818 (a) Excludes provision for losses on lending-related commitments of $10 million. in millions December 31, Provision Charge-offs Recoveries June 30, Commercial, financial and agricultural $ 362 $ 13 $ (23 ) $ 21 $ 373 Real estate — commercial mortgage 165 (5 ) (3 ) 2 159 Real estate — construction 32 (11 ) (2 ) 15 34 Commercial lease financing 62 (3 ) (5 ) 6 60 Total commercial loans 621 (6 ) (33 ) 44 626 Real estate — residential mortgage 37 (9 ) (5 ) 2 25 Home equity: Key Community Bank 84 9 (20 ) 4 77 Other 11 1 (6 ) 3 9 Total home equity loans 95 10 (26 ) 7 86 Consumer other — Key Community Bank 29 8 (16 ) 3 24 Credit cards 34 13 (18 ) 1 30 Consumer other: Marine 29 1 (14 ) 5 21 Other 3 (1 ) (1 ) 1 2 Total consumer other: 32 — (15 ) 6 23 Total consumer loans 227 22 (80 ) 19 188 Total ALLL — continuing operations 848 16 (a) (113 ) 63 814 Discontinued operations 39 9 (24 ) 8 32 Total ALLL — including discontinued operations $ 887 $ 25 $ (137 ) $ 71 $ 846 (a) Excludes provision for losses on lending-related commitments. Our ALLL from continuing operations decreased by $18 million, or 2.2%, from the second quarter of 2014 primarily because of the improvement in the credit quality of our loan portfolios. The quality of new loan originations as well as decreasing levels of classified and nonperforming loans also resulted in a reduction in our general allowance. Our general allowance applies expected loss rates to our existing loans with similar risk characteristics as well as any adjustments to reflect our current assessment of qualitative factors such as changes in economic conditions, underwriting standards, and concentrations of credit. Our delinquency trends declined during 2014 and into 2015 due to continued improved credit quality, relatively stable economic conditions, and continued run-off in our exit loan portfolio, reflecting our effort to maintain a moderate enterprise risk tolerance. For continuing operations, the loans outstanding individually evaluated for impairment totaled $334 million, with a corresponding allowance of $52 million at June 30, 2015. Loans outstanding collectively evaluated for impairment totaled $57.9 billion, with a corresponding allowance of $743 million at June 30, 2015. At June 30, 2015, PCI loans evaluated for impairment totaled $12 million, with a corresponding allowance of $1 million. There was no provision for loan and lease losses on these PCI loans during the six months ended June 30, 2015. At June 30, 2014, the loans outstanding individually evaluated for impairment totaled $276 million, with a corresponding allowance of $32 million. Loans outstanding collect

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	5. Fair Value Measurements Fair Value Determination As defined in the applicable accounting guidance, fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in our principal market. We have established and documented our process for determining the fair values of our assets and liabilities, where applicable. Fair value is based on quoted market prices, when available, for identical or similar assets or liabilities. In the absence of quoted market prices, we determine the fair value of our assets and liabilities using valuation models or third-party pricing services. Both of these approaches rely on market-based parameters, when available, such as interest rate yield curves, option volatilities, and credit spreads, or unobservable inputs. Unobservable inputs may be based on our judgment, assumptions, and estimates related to credit quality, liquidity, interest rates, and other relevant inputs. Valuation adjustments, such as those pertaining to counterparty and our own credit quality and liquidity, may be necessary to ensure that assets and liabilities are recorded at fair value. Credit valuation adjustments are made when market pricing does not accurately reflect the counterparty’s or our own credit quality. We make liquidity valuation adjustments to the fair value of certain assets to reflect the uncertainty in the pricing and trading of the instruments when we are unable to observe recent market transactions for identical or similar instruments. Liquidity valuation adjustments are based on the following factors: • the amount of time since the last relevant valuation; • whether there is an actual trade or relevant external quote available at the measurement date; and • volatility associated with the primary pricing components. We ensure that our fair value measurements are accurate and appropriate by relying upon various controls, including: • an independent review and approval of valuation models and assumptions; • recurring detailed reviews of profit and loss; and • a validation of valuation model components against benchmark data and similar products, where possible. We recognize transfers between levels of the fair value hierarchy at the end of the reporting period. Quarterly, we review any changes to our valuation methodologies to ensure they are appropriate and justified, and refine our valuation methodologies if more market-based data becomes available. The Fair Value Committee, which is governed by ALCO, oversees the valuation process for all lines of business and support areas, as applicable. Various Working Groups that report to the Fair Value Committee analyze and approve the underlying assumptions and valuation adjustments. Changes in valuation methodologies for Level 1 and Level 2 instruments are presented to the Accounting Policy group for approval. Changes in valuation methodologies for Level 3 instruments are presented to the Fair Value Committee for approval. The Working Groups are discussed in more detail in the qualitative disclosures within this note and in Note 11 (“Acquisitions and Discontinued Operations”). Formal documentation of the fair valuation methodologies is prepared by the lines of business and support areas as appropriate. The documentation details the asset or liability class and related general ledger accounts, valuation techniques, fair value hierarchy level, market participants, accounting methods, valuation methodology, group responsible for valuations, and valuation inputs. Additional information regarding our accounting policies for determining fair value is provided in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Fair Value Measurements” beginning on page 118 of our 2014 Form 10-K. Qualitative Disclosures of Valuation Techniques Loans Securities (trading and available for sale) . • Securities are classified as Level 1 when quoted market prices are available in an active market for the identical securities. Level 1 instruments include exchange-traded equity securities. • Securities are classified as Level 2 if quoted prices for identical securities are not available, and fair value is determined using pricing models (either by a third-party pricing service or internally) or quoted prices of similar securities. These instruments include municipal bonds; bonds backed by the U.S. government; corporate bonds; certain mortgage-backed securities; securities issued by the U.S. Treasury; money markets; and certain agency and corporate CMOs. Inputs to the pricing models include: standard inputs, such as yields, benchmark securities, bids, and offers; actual trade data (i.e., spreads, credit ratings, and interest rates) for comparable assets; spread tables; matrices; high-grade scales; and option-adjusted spreads. • Securities are classified as Level 3 when there is limited activity in the market for a particular instrument. To determine fair value in such cases, depending on the complexity of the valuations required, we use internal models based on certain assumptions or a third-party valuation service. At June 30, 2015, our Level 3 instruments consist of a convertible preferred security. Our Strategy group is responsible for reviewing the valuation model and determining the fair value of this investment on a quarterly basis. The security is valued using a cash flow analysis of the associated private company issuer. The valuation of the security is negatively impacted by a projected net loss of the associated private company and positively impacted by a projected net gain. The fair values of our Level 2 securities available for sale are determined by a third-party pricing service. The valuations provided by the third-party pricing service are based on observable market inputs, which include benchmark yields, reported trades, issuer spreads, benchmark securities, bids, offers, and reference data obtained from market research publications. Inputs used by the third-party pricing service in valuing CMOs and other mortgage-backed securities also include new issue data, monthly payment information, whole loan collateral performance, and “To Be Announced” prices. In valuations of securities issued by state and political subdivisions, inputs used by the third-party pricing service also include material event notices. On a monthly basis, we validate the pricing methodologies utilized by our third-party pricing service to ensure the fair value determination is consistent with the applicable accounting guidance and that our assets are properly classified in the fair value hierarchy. To perform this validation, we: • review documentation received from our third-party pricing service regarding the inputs used in their valuations and determine a level assessment for each category of securities; • substantiate actual inputs used for a sample of securities by comparing the actual inputs used by our third-party pricing service to comparable inputs for similar securities; and • substantiate the fair values determined for a sample of securities by comparing the fair values provided by our third-party pricing service to prices from other independent sources for the same and similar securities. We analyze variances and conduct additional research with our third-party pricing service and take appropriate steps based on our findings. Private equity and mezzanine investments . Private equity and mezzanine investments are classified as Level 3 assets since our judgment significantly influences the determination of fair value. Our Fund Management, Asset Management, and Accounting groups are responsible for reviewing the valuation models and determining the fair value of these investments on a quarterly basis. Direct investments in properties are initially valued based upon the transaction price. This amount is then adjusted to fair value based on current market conditions using the discounted cash flow method based on the expected investment exit date. The fair values of the assets are reviewed and adjusted quarterly. The Company did not have any significant direct equity and mezzanine investments at June 30, 2015. Consistent with accounting guidance, indirect investments are valued using a methodology that allows the use of statements from the investment manager to calculate net asset value per share. A primary input used in estimating fair value is the most recent value of the capital accounts as reported by the general partners of the funds in which we invest. The calculation to determine the investment’s fair value is based on our percentage ownership in the fund multiplied by the net asset value of the fund, as provided by the fund manager. Under the requirements of the Volcker Rule, we will be required to dispose of some or all of our indirect investments. As of June 30, 2015, management has not committed to a plan to sell these investments. Therefore, these investments continue to be valued using the net asset value per share methodology. For more information about the Volcker Rule, see the discussion under the heading “Other Regulatory Developments under the Dodd-Frank Act – ‘Volcker Rule’” in the section entitled “Supervision and Regulation” beginning on page 16 of our 2014 Form 10-K. Investments in real estate private equity funds are included within private equity and mezzanine investments. The main purpose of these funds is to acquire a portfolio of real estate investments that provides attractive risk-adjusted returns and current income for investors. Certain of these investments do not have readily determinable fair values and represent our ownership interest in an entity that follows measurement principles under investment company accounting. The following table presents the fair value of our indirect investments and related unfunded commitments at June 30, 2015. We did not provide any financial support to investees related to our direct and indirect investments for the six months ended June 30, 2015, and June 30, 2014. June 30, 2015 in millions Unfunded Fair Value Commitments INVESTMENT TYPE Indirect investments Passive funds (a) $ 9 $ 1 Total $ 9 $ 1 (a) We invest in passive funds, which are multi-investor private equity funds. These investments can never be redeemed. Instead, distributions are received through the liquidation of the underlying investments in the funds. Some funds have no restrictions on sale, while others require investors to remain in the fund until maturity. The funds will be liquidated over a period of one to four years. The purpose of KREEC’s funding is to allow funds to make additional investments and keep a certain market value threshold in the funds. KREEC is obligated to provide financial support, as all investors are required, to fund based on their ownership percentage, as noted in the Limited Partnership Agreements. Principal investments . Our direct investments include investments in debt and equity instruments of both private and public companies. When quoted prices are available in an active market for the identical direct investment, we use the quoted prices in the valuation process, and the related investments are classified as Level 1 assets. However, in most cases, quoted market prices are not available for our direct investments, and we must perform valuations using other methods. These direct investment valuations are an in-depth analysis of the condition of each investment and are based on the unique facts and circumstances related to each individual investment. There is a certain amount of subjectivity surrounding the valuation of these investments due to the combination of quantitative and qualitative factors that are used in the valuation models. Therefore, these direct investments are classified as Level 3 assets. The specific inputs used in the valuations of each type of direct investment are described below. Interest-bearing securities (i.e., loans) are valued on a quarterly basis. Valuation adjustments are determined by the Principal Investing Entities Deal Team and are subject to approval by the Investment Committee. Valuations of debt instruments are based on the Principal Investing Entities Deal Team’s knowledge of the current financial status of the subject company, which is regularly monitored throughout the term of the investment. Significant unobservable inputs used in the valuations of these investments include the company’s payment history, adequacy of cash flows from operations, and current operating results, including market multiples and historical and forecast EBITDA. Inputs can also include the seniority of the debt, the nature of any pledged collateral, the extent to which the security interest is perfected, and the net liquidation value of collateral. Valuations of equity instruments of private companies, which are prepared on a quarterly basis, are based on current market conditions and the current financial status of each company. A valuation analysis is performed to value each investment. The valuation analysis is reviewed by the Principal Investing Entities Deal Team Member, and reviewed and approved by the Chief Administrative Officer of one of the independent investment managers. Significant unobservable inputs used in these valuations include adequacy of the company’s cash flows from operations, any significant change in the company’s performance since the prior valuation, and any significant equity issuances by the company. Equity instruments of public companies are valued using quoted prices in an active market for the identical security. If the instrument is restricted, the fair value is determined considering the number of shares traded daily, the number of the company’s total restricted shares, and price volatility. Our indirect investments are classified as Level 3 assets since our significant inputs are not observable in the marketplace. Indirect investments include primary and secondary investments in private equity funds engaged mainly in venture- and growth-oriented investing. These investments do not have readily determinable fair values. Indirect investments are valued using a methodology that is consistent with accounting guidance that allows us to estimate fair value based upon net asset value per share (or its equivalent, such as member units or an ownership interest in partners’ capital to which a proportionate share of net assets is attributed). The significant unobservable input used in estimating fair value is primarily the most recent value of the capital accounts as reported by the general partners of the funds in which we invest. Under the requirements of the Volcker Rule, we will be required to dispose of some or all of our indirect investments. As of June 30, 2015, management has not committed to a plan to sell these investments. Therefore, these investments continue to be valued using the net asset value per share methodology. For indirect investments, management may make adjustments it deems appropriate to the net asset value if it is determined that the net asset value does not properly reflect fair value. In determining the need for an adjustment to net asset value, management performs an analysis of the private equity funds based on the independent fund manager’s valuations as well as management’s own judgment. Significant unobservable inputs used in these analyses include current fund financial information provided by the fund manager, an estimate of future proceeds expected to be received on the investment, and market multiples. Management also considers whether the independent fund manager adequately marks down an impaired investment, maintains financial statements in accordance with GAAP, or follows a practice of holding all investments at cost. The following table presents the fair value of our direct and indirect principal investments and related unfunded commitments at June 30, 2015, as well as financial support provided for the three and six months ended June 30, 2015, and June 30, 2014: Financial support provided Three months ended June 30, Six months ended June 30, June 30, 2015 2015 2014 2015 2014 Fair Unfunded Funded Funded Funded Funded Funded Funded Funded Funded in millions Value Commitments Commitments Other Commitments Other Commitments Other Commitments Other INVESTMENT TYPE Direct investments (a) $ 70 — — — — $ 1 — $ 2 — $ 2 Indirect investments (b) 282 $ 54 $ 3 — $ 4 — $ 5 — $ 6 — Total $ 352 $ 54 $ 3 — $ 4 $ 1 $ 5 $ 2 $ 6 $ 2 (a) Our direct investments consist of equity and debt investments directly in independent business enterprises. Operations of the business enterprises are handled by management of the portfolio company. The purpose of funding these enterprises is to provide financial support for business development and acquisition strategies. We infuse equity capital based on an initial contractual cash contribution and later from additional requests on behalf of the companies’ management. (b) Our indirect investments consist of buyout funds, venture capital funds, and fund of funds. These investments are generally not redeemable. Instead, distributions are received through the liquidation of the underlying investments of the fund. An investment in any one of these funds typically can be sold only with the approval of the fund’s general partners. We estimate that the underlying investments of the funds will be liquidated over a period of one to nine years. The purpose of funding our capital commitments to these investments is to allow the funds to make additional follow-on investments and pay fund expenses until the fund dissolves. We, and all other investors in the fund, are obligated to fund the full amount of our respective capital commitments to the fund based on our and their respective ownership percentages, as noted in the applicable Limited Partnership Agreement. Derivatives . In addition, we have several customized derivative instruments and risk participations that are classified as Level 3 instruments. These derivative positions are valued using internally developed models, with inputs consisting of available market data, such as bond spreads and asset values, as well as unobservable internally derived assumptions, such as loss probabilities and internal risk ratings of customers. These derivatives are priced monthly by our MRM group using a credit valuation adjustment methodology. Swap details with the customer and our related participation percentage, if applicable, are obtained from our derivatives accounting system, which is the system of record. Applicable customer rating information is obtained from the particular loan system and represents an unobservable input to this valuation process. Using these various inputs, a valuation of these Level 3 derivatives is performed using a model that was acquired from a third party. In summary, the fair value represents an estimate of the amount that the risk participation counterparty would need to pay/receive as of the measurement date based on the probability of customer default on the swap transaction and the fair value of the underlying customer swap. Therefore, a higher loss probability and a lower credit rating would negatively affect the fair value of the risk participations and a lower loss probability and higher credit rating would positively affect the fair value of the risk participations. Market convention implies a credit rating of “AA” equivalent in the pricing of derivative contracts, which assumes all counterparties have the same creditworthiness. To reflect the actual exposure on our derivative contracts related to both counterparty and our own creditworthiness, we record a fair value adjustment in the form of a credit valuation adjustment. The credit component is determined by individual counterparty based on the probability of default and considers master netting and collateral agreements. The credit valuation adjustment is classified as Level 3. Our MRM group is responsible for the valuation policies and procedures related to this credit valuation adjustment. A weekly reconciliation process is performed to ensure that all applicable derivative positions are covered in the calculation, which includes transmitting customer exposures and reserve reports to trading management, derivative traders and marketers, derivatives middle office, and corporate accounting personnel. On a quarterly basis, MRM prepares the credit valuation adjustment calculation, which includes a detailed reserve comparison with the previous quarter, an analysis for change in reserve, and a reserve forecast to ensure that the credit valuation adjustment recorded at period end is sufficient. Other assets and liabilities. Assets and Liabilities Measured at Fair Value on a Recurring Basis Certain assets and liabilities are measured at fair value on a recurring basis in accordance with GAAP. The following tables present these assets and liabilities at June 30, 2015, December 31, 2014, and June 30, 2014. June 30, 2015 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations — $ 580 — $ 580 States and political subdivisions — 23 — 23 Collateralized mortgage obligations — — — — Other mortgage-backed securities — 37 — 37 Other securities $ 2 24 — 26 Total trading account securities 2 664 — 666 Commercial loans — 8 — 8 Total trading account assets 2 672 — 674 Securities available for sale: States and political subdivisions — 19 — 19 Collateralized mortgage obligations — 11,751 — 11,751 Other mortgage-backed securities — 2,452 — 2,452 Other securities 12 — $ 10 22 Total securities available for sale 12 14,222 10 14,244 Other investments: Principal investments: Direct — — 70 70 Indirect — — 282 282 Total principal investments — — 352 352 Equity and mezzanine investments: Direct — — — — Indirect — — 9 9 Total equity and mezzanine investments — — 9 9 Total other investments — — 361 361 Derivative assets: Interest rate — 840 16 856 Foreign exchange 121 10 — 131 Commodity — 379 — 379 Credit — 1 3 4 Derivative assets 121 1,230 19 1,370 Netting adjustments (a) — — — (834 ) Total derivative assets 121 1,230 19 536 Accrued income and other assets — 2 — 2 Total assets on a recurring basis at fair value $ 135 $ 16,126 $ 390 $ 15,817 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions $ 1 $ 527 — $ 528 Derivative liabilities: Interest rate — 568 — 568 Foreign exchange 100 8 — 108 Commodity — 365 — 365 Credit — 5 — 5 Derivative liabilities 100 946 — 1,046 Netting adjustments (a) — — — (486 ) Total derivative liabilities 100 946 — 560 Accrued expense and other liabilities — 2 — 2 Total liabilities on a recurring basis at fair value $ 101 $ 1,475 — $ 1,090 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. December 31, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations — $ 555 — $ 555 States and political subdivisions — 38 — 38 Collateralized mortgage obligations — — — — Other mortgage-backed securities — 124 — 124 Other securities $ 2 29 — 31 Total trading account securities 2 746 — 748 Commercial loans — 2 — 2 Total trading account assets 2 748 — 750 Securities available for sale: States and political subdivisions — 23 — 23 Collateralized mortgage obligations — 11,270 — 11,270 Other mortgage-backed securities — 2,035 — 2,035 Other securities 22 — $ 10 32 Total securities available for sale 22 13,328 10 13,360 Other investments: Principal investments: Direct 2 — 102 104 Indirect — — 302 302 Total principal investments 2 — 404 406 Equity and mezzanine investments: Direct — — — — Indirect — — 10 10 Total equity and mezzanine investments — — 10 10 Total other investments 2 — 414 416 Derivative assets: Interest rate — 924 13 937 Foreign exchange 91 2 — 93 Commodity — 608 — 608 Credit — 2 3 5 Derivative assets 91 1,536 16 1,643 Netting adjustments (a) — — — (1,034 ) Total derivative assets 91 1,536 16 609 Accrued income and other assets — — — — Total assets on a recurring basis at fair value $ 117 $ 15,612 $ 440 $ 15,135 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions — $ 423 — $ 423 Derivative liabilities: Interest rate — 644 — 644 Foreign exchange $ 77 4 — 81 Commodity — 594 — 594 Credit — 6 $ 1 7 Derivative liabilities 77 1,248 1 1,326 Netting adjustments (a) — — — (542 ) Total derivative liabilities 77 1,248 1 784 Accrued expense and other liabilities — — — — Total liabilities on a recurring basis at fair value $ 77 $ 1,671 $ 1 $ 1,207 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. June 30, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations — $ 660 — $ 660 States and political subdivisions — 33 — 33 Collateralized mortgage obligations — 19 — 19 Other mortgage-backed securities — 144 — 144 Other securities $ 5 26 — 31 Total trading account securities 5 882 — 887 Commercial loans — 3 — 3 Total trading account assets 5 885 — 890 Securities available for sale: States and political subdivisions — 31 — 31 Collateralized mortgage obligations — 9,866 — 9,866 Other mortgage-backed securities — 2,305 — 2,305 Other securities 22 — — 22 Total securities available for sale 22 12,202 — 12,224 Other investments: Principal investments: Direct — — $ 146 146 Indirect — — 399 399 Total principal investments — — 545 545 Equity and mezzanine investments: Direct — — — — Indirect — — 16 16 Total equity and mezzanine investments — — 16 16 Total other investments — — 561 561 Derivative assets: Interest rate — 964 20 984 Foreign exchange 51 5 — 56 Commodity — 181 1 182 Credit — — 4 4 Derivative assets 51 1,150 25 1,226 Netting adjustments (a) — — — (677 ) Total derivative assets 51 1,150 25 549 Accrued income and other assets — 4 — 4 Total assets on a recurring basis at fair value $ 78 $ 14,241 $ 586 $ 14,228 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions $ 1 $ 520 — $ 521 Derivative liabilities: Interest rate — 653 — 653 Foreign exchange 52 4 — 56 Commodity — 177 — 177 Credit — 7 $ 1 8 Derivative liabilities 52 841 1 894 Netting adjustments (a) — — — (443 ) Total derivative liabilities 52 841 1 451 Accrued expense and other liabilities — 4 — 4 Total liabilities on a recurring basis at fair value $ 53 $ 1,365 $ 1 $ 976 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. Changes in Level 3 Fair Value Measurements The following table shows the change in the fair values of our Level 3 financial instruments for the three and six months ended June 30, 2015, and June 30, 2014. We mitigate the credit risk, interest rate risk, and risk of loss related to many of these Level 3 instruments by using securities and derivative positions classified as Level 1 or Level 2. Level 1 and Level 2 instruments are not included in the following table. Therefore, the gains or losses shown do not include the impact of our risk management activities. Unrealized Gains Gains Beginning (Losses) Transfers Transfers End of (Losses) of Period Included in into out of Period Included in in millions Balance Earnings Purchases Sales Settlements Level 3 (d) Level 3 (d) Balance (f) Earnings Six months ended June 30, 2015 Securities available for sale Other securities $ 10 — — — — — — $ 10 — Other investments Principal investments Direct 102 $ 16 (b) $ 2 $ (50 ) — — — 70 $ (3 ) (b) Indirect 302 25 (b) 4 (49 ) — — — 282 (15 ) (b) Equity and mezzanine investments Direct — 2 (b) — (2 ) — — — — 2 (b) Indirect 10 6 (b) — (7 ) — — — 9 6 (b) Derivative instruments (a) Interest rate 13 (1 ) (c) 1 — — $ 8 (e) $ (5 ) (e) 16 — Commodity — — — — — — — — — Credit 2 (4 ) (c) — — $ 5 — — 3 — Three months ended June 30, 2015 Securities available for sale Other securities $ 10 — — — — — — $ 10 — Other investments Principal investments Direct 73 $ 3 (b) $ 1 $ (7 ) — — — 70 $ (3 ) (b) Indirect 301 8 (b) 3 (30 ) — — — 282 (7 ) (b) Equity and mezzanine investments Direct — — — — — — — — — Indirect 9 7 (b) — (7 ) — — — 9 7 (b) Derivative instruments (a) Interest rate 10 (3 ) (c) 1 — — $ 8 (e) — 16 — Commodity — — — — — — — — — Credit 2 (1 ) (c) — — $ 2 — — 3 — Unrealized Gains Gains Beginning (Losses) Transfers Transfers End of (Losses) of Period Included in into out of Period Included in in millions Balance Earnings Purchases Sales Settlements Level 3 (d) Level 3 (d) Balance (f) Earnings Six months ended June 30, 2014 Other investments Principal investments Direct $ 141 $ 11 (b) $ 1 $ (7 ) — — — $ 146 $ 20 (b) Indirect 413 40 (b) 5 (59 ) — — — 399 12 (b) Equity and mezzanine investments Direct — — — — — — — — — Indirect 23 (1 ) (b) — — $ (6 ) — — 16 (1 ) (b) Derivative instruments (a) Interest rate 25 2 (c) 3 (2 ) — $ 5 (e) $ (13 ) (e) 20 — Commodity — — — — — 1 (e) — 1 — Credit 3 (5 ) (c) — — 5 — — 3 — Three months ended June 30, 2014 Other investments Principal investments Direct $ 141 $ 7 (b) $ 1 $ (3 ) — — — $ 146 $ 14 (b) Indirect 403 20 (b) 4 (28 ) — — — 399 3 (b) Equity and mezzanine investments Direct — — — — — — — — — Indirect 20 — — — $ (4 ) — — 16 — Derivative instruments (a) Interest rate 22 1 (c) 1 (1 ) — $ 2 (e) $ (5 ) (e) 20 — Commodity — — — — — 1 (e) — 1 — Credit 3 (3 ) (c) — — 3 — — 3 — (a) Amounts represent Level 3 derivative assets less Level 3 derivative liabilities. (b) Realized and unrealized gains and losses on principal investments are reported in “net gains (losses) from principal investing” on the income statement. Realized and unrealized losses on private equity and mezzanine investments are reported in “other income” on the income statement. (c) Realized and unrealized gains and losses on derivative instruments are reported in “corporate services income” and “other income” on the income statement. (d) Our policy is to recognize transfers into and transfers out of Level 3 as of the end of the reporting period. (e) Certain derivatives previously classified as Level 2 were transferred to Level 3 because Level 3 unobservable inputs became significant. Certain derivatives previously classified as Level 3 were transferred to Level 2 because Level 3 unobservable inputs became less significant. (f) There were no issuances for the six-month periods ended June 30, 2015, and June 30, 2014. Assets Measured at Fair Value on a Nonrecurring Basis Certain assets and liabilities are measured at fair value on a nonrecurring basis in accordance with GAAP. The adjustments to fair value generally result from the application of accounting guidance that requires assets and liabilities to be recorded at the lower of cost or fair value, or assessed for impairment. The following table presents our assets measured at fair value on a nonrecurring basis at June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A NONRECURRING BASIS Impaired loans — — $ 8 $ 8 Loans held for sale (a) — — — — Accrued income and other assets — — 5 5 Total assets on a nonrecurring basis at fair value — — $ 13 $ 13 December 31, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A NONRECURRING BASIS Impaired loans — — $ 5 $ 5 Lo

Securities

Securities	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Securities	6. Securities Securities available for sale. “Other securities” held in the available-for-sale portfolio consist of marketable equity securities that are traded on a public exchange such as the NYSE or NASDAQ and convertible preferred stock of a privately held company. Held-to-maturity securities. “Other securities” held in the held-to-maturity portfolio consist of foreign bonds and capital securities. Unrealized losses on equity securities deemed to be “other-than-temporary,” and realized gains and losses resulting from sales of securities using the specific identification method, are included in “other income” on the income statement. Unrealized losses on debt securities deemed to be “other-than-temporary” are included in “other income” on the income statement or in AOCI on the balance sheet in accordance with the applicable accounting guidance related to the recognition of OTTI of debt securities. The amortized cost, unrealized gains and losses, and approximate fair value of our securities available for sale and held-to-maturity securities are presented in the following tables. Gross unrealized gains and losses represent the difference between the amortized cost and the fair value of securities on the balance sheet as of the dates indicated. Accordingly, the amount of these gains and losses may change in the future as market conditions change. June 30, 2015 Gross Gross Amortized Unrealized Unrealized Fair in millions Cost Gains Losses Value SECURITIES AVAILABLE FOR SALE States and political subdivisions $ 19 — — $ 19 Collateralized mortgage obligations 11,765 $ 101 $ 115 11,751 Other mortgage-backed securities 2,439 21 8 2,452 Other securities 20 2 — 22 Total securities available for sale $ 14,243 $ 124 $ 123 $ 14,244 HELD-TO-MATURITY SECURITIES Collateralized mortgage obligations $ 4,463 $ 17 $ 43 $ 4,437 Other mortgage-backed securities 539 — 4 535 Other securities 20 — — 20 Total held-to-maturity securities $ 5,022 $ 17 $ 47 $ 4,992 December 31, 2014 Gross Gross Amortized Unrealized Unrealized Fair in millions Cost Gains Losses Value SECURITIES AVAILABLE FOR SALE States and political subdivisions $ 22 $ 1 — $ 23 Collateralized mortgage obligations 11,310 96 $ 136 11,270 Other mortgage-backed securities 2,004 32 1 2,035 Other securities 29 3 — 32 Total securities available for sale $ 13,365 $ 132 $ 137 $ 13,360 HELD-TO-MATURITY SECURITIES Collateralized mortgage obligations $ 4,755 $ 15 $ 57 $ 4,713 Other mortgage-backed securities 240 1 — 241 Other securities 20 — — 20 Total held-to-maturity securities $ 5,015 $ 16 $ 57 $ 4,974 June 30, 2014 Gross Gross Amortized Unrealized Unrealized Fair in millions Cost Gains Losses Value SECURITIES AVAILABLE FOR SALE States and political subdivisions $ 30 $ 1 — $ 31 Collateralized mortgage obligations 9,912 135 $ 181 9,866 Other mortgage-backed securities 2,273 33 1 2,305 Other securities 18 4 — 22 Total securities available for sale $ 12,233 $ 173 $ 182 $ 12,224 HELD-TO-MATURITY SECURITIES Collateralized mortgage obligations $ 5,213 $ 12 $ 91 $ 5,134 Other securities 20 — — 20 Total held-to-maturity securities $ 5,233 $ 12 $ 91 $ 5,154 The following table summarizes our securities that were in an unrealized loss position as of June 30, 2015, December 31, 2014, and June 30, 2014. Duration of Unrealized Loss Position Less than 12 Months 12 Months or Longer Total Gross Gross Gross Unrealized Unrealized Unrealized in millions Fair Value Losses Fair Value Losses Fair Value Losses June 30, 2015 Securities available for sale: Collateralized mortgage obligations $ 2,784 $ 46 $ 2,624 $ 69 $ 5,408 $ 115 Other mortgage-backed securities 1,060 8 — — 1,060 8 Other securities (a) — — 3 — 3 — Held-to-maturity: Collateralized mortgage obligations 1,236 12 1,278 31 2,514 43 Other mortgage-backed securities 475 4 — — 475 4 Other securities (b) 4 — — — 4 — Total temporarily impaired securities $ 5,559 $ 70 $ 3,905 $ 100 $ 9,464 $ 170 December 31, 2014 Securities available for sale: Collateralized mortgage obligations $ 3,019 $ 52 $ 2,932 $ 84 $ 5,951 $ 136 Other mortgage-backed securities — — 78 1 78 1 Other securities (a) 4 — 2 — 6 — Held-to-maturity: Collateralized mortgage obligations 1,005 11 1,994 46 2,999 57 Total temporarily impaired securities $ 4,028 $ 63 $ 5,006 $ 131 $ 9,034 $ 194 June 30, 2014 Securities available for sale: Collateralized mortgage obligations $ 268 $ 1 $ 4,653 $ 180 $ 4,921 $ 181 Other mortgage-backed securities — — 85 1 85 1 Other securities (a) 1 — 2 — 3 — Held-to-maturity: Collateralized mortgage obligations 811 9 2,351 82 3,162 91 Total temporarily impaired securities $ 1,080 $ 10 $ 7,091 $ 263 $ 8,171 $ 273 (a) Gross unrealized losses totaled less than $1 million for other securities available for sale as of June 30, 2015, December 31, 2014 and June 30, 2014. (b) Gross unrealized losses totaled less than $1 million for other securities held-to-maturity as of June 30, 2015. At June 30, 2015, we had $115 million of gross unrealized losses related to 65 fixed-rate CMOs that we invested in as part of our overall A/LM strategy. These securities had a weighted-average maturity of 4 years at June 30, 2015. We also had $8 million of gross unrealized losses related to 23 other mortgage-backed securities positions, which had a weighted-average maturity of 4.9 years at June 30, 2015. Because these securities have a fixed interest rate, their fair value is sensitive to movements in market interest rates. These unrealized losses are considered temporary since we expect to collect all contractually due amounts from these securities. Accordingly, these investments were reduced to their fair value through OCI, not earnings. We regularly assess our securities portfolio for OTTI. The assessments are based on the nature of the securities, the underlying collateral, the financial condition of the issuer, the extent and duration of the loss, our intent related to the individual securities, and the likelihood that we will have to sell securities prior to expected recovery. The debt securities identified as other-than-temporarily impaired are written down to their current fair value. For those debt securities that we intend to sell, or more-likely-than-not will be required to sell, prior to the expected recovery of the amortized cost, the entire impairment (i.e., the difference between amortized cost and the fair value) is recognized in earnings. For those debt securities that we do not intend to sell, or more-likely-than-not will not be required to sell, prior to expected recovery, the credit portion of OTTI is recognized in earnings, while the remaining OTTI is recognized in equity as a component of AOCI on the balance sheet. As shown in the following table, we did not have any impairment losses recognized in earnings for the three months ended June 30, 2015. Three months ended June 30, 2015 in millions Balance at March 31, 2015 $ 4 Impairment recognized in earnings — Balance at June 30, 2015 $ 4 Realized gains and losses related to securities available for sale were as follows: Six months ended June 30, 2015 in millions Realized gains — Realized losses $ 1 Net securities gains (losses) $ (1 ) At June 30, 2015, securities available for sale and held-to-maturity securities totaling $7 billion were pledged to secure securities sold under repurchase agreements, to secure public and trust deposits, to facilitate access to secured funding, and for other purposes required or permitted by law. The following table shows securities by remaining maturity. CMOs and other mortgage-backed securities (both of which are included in the securities available-for-sale portfolio) as well as the CMOs in the held-to-maturity portfolio are presented based on their expected average lives. The remaining securities, in both the available-for-sale and held-to-maturity portfolios, are presented based on their remaining contractual maturity. Actual maturities may differ from expected or contractual maturities since borrowers have the right to prepay obligations with or without prepayment penalties. Securities Available for Sale Held-to-Maturity Securities June 30, 2015 in millions Amortized Fair Amortized Fair Due in one year or less $ 257 $ 260 $ 7 $ 7 Due after one through five years 12,710 12,716 4,476 4,450 Due after five through ten years 1,273 1,265 539 535 Due after ten years 3 3 — — Total $ 14,243 $ 14,244 $ 5,022 $ 4,992

Derivatives and Hedging Activit

Derivatives and Hedging Activities	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	7. Derivatives and Hedging Activities We are a party to various derivative instruments, mainly through our subsidiary, KeyBank. Derivative instruments are contracts between two or more parties that have a notional amount and an underlying variable, require a small or no net investment, and allow for the net settlement of positions. A derivative’s notional amount serves as the basis for the payment provision of the contract, and takes the form of units, such as shares or dollars. A derivative’s underlying variable is a specified interest rate, security price, commodity price, foreign exchange rate, index, or other variable. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the fair value of the derivative contract. The primary derivatives that we use are interest rate swaps, caps, floors, and futures; foreign exchange contracts; commodity derivatives; and credit derivatives. Generally, these instruments help us manage exposure to interest rate risk, mitigate the credit risk inherent in the loan portfolio, hedge against changes in foreign currency exchange rates, and meet client financing and hedging needs. As further discussed in this note: • interest rate risk represents the possibility that the EVE or net interest income will be adversely affected by fluctuations in interest rates; • credit risk is the risk of loss arising from an obligor’s inability or failure to meet contractual payment or performance terms; and • foreign exchange risk is the risk that an exchange rate will adversely affect the fair value of a financial instrument. Derivative assets and liabilities are recorded at fair value on the balance sheet, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allow us to settle all derivative contracts held with a single counterparty on a net basis, and to offset net derivative positions with related cash collateral, where applicable. As a result, we could have derivative contracts with negative fair values included in derivative assets on the balance sheet and contracts with positive fair values included in derivative liabilities. At June 30, 2015, after taking into account the effects of bilateral collateral and master netting agreements, we had $76 million of derivative assets and a positive $7 million of derivative liabilities that relate to contracts entered into for hedging purposes. Our hedging derivative liabilities are in an asset position largely because we have contracts with positive fair values as a result of master netting agreements. As of the same date, after taking into account the effects of bilateral collateral and master netting agreements and a reserve for potential future losses, we had derivative assets of $460 million and derivative liabilities of $567 million that were not designated as hedging instruments. Additional information regarding our accounting policies for derivatives is provided in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Derivatives” beginning on page 121 of our 2014 Form 10-K. Derivatives Designated in Hedge Relationships Net interest income and the EVE change in response to changes in the mix of assets, liabilities, and off-balance sheet instruments; associated interest rates tied to each instrument; differences in the repricing and maturity characteristics of interest-earning assets and interest-bearing liabilities; and changes in interest rates. We utilize derivatives that have been designated as part of a hedge relationship in accordance with the applicable accounting guidance to minimize the exposure and volatility of net interest income and EVE to interest rate fluctuations. The primary derivative instruments used to manage interest rate risk are interest rate swaps, which convert the contractual interest rate index of agreed-upon amounts of assets and liabilities (i.e., notional amounts) to another interest rate index. We designate certain “receive fixed/pay variable” interest rate swaps as fair value hedges. These contracts convert certain fixed-rate long-term debt into variable-rate obligations, thereby modifying our exposure to changes in interest rates. As a result, we receive fixed-rate interest payments in exchange for making variable-rate payments over the lives of the contracts without exchanging the notional amounts. Similarly, we designate certain “receive fixed/pay variable” interest rate swaps as cash flow hedges. These contracts effectively convert certain floating-rate loans into fixed-rate loans to reduce the potential adverse effect of interest rate decreases on future interest income. Again, we receive fixed-rate interest payments in exchange for making variable-rate payments over the lives of the contracts without exchanging the notional amounts. We also designate certain “pay fixed/receive variable” interest rate swaps as cash flow hedges. These swaps convert certain floating-rate debt into fixed-rate debt. We also use these swaps to manage the interest rate risk associated with anticipated sales of certain commercial real estate loans. The swaps protect against the possible short-term decline in the value of the loans that could result from changes in interest rates between the time they are originated and the time they are sold. Interest rate swaps are also used to hedge the floating-rate debt that funds fixed-rate leases entered into by our equipment finance line of business. These swaps are designated as cash flow hedges to mitigate the interest rate mismatch between the fixed-rate lease cash flows and the floating-rate payments on the debt. These hedge relationships were terminated during the quarter ended March 31, 2014. We use foreign currency forward transactions to hedge the foreign currency exposure of our net investment in various foreign equipment finance entities. These entities are denominated in a non-U.S. currency. These swaps are designated as net investment hedges to mitigate the exposure of measuring the net investment at the spot foreign exchange rate. Derivatives Not Designated in Hedge Relationships On occasion, we enter into interest rate swap contracts to manage economic risks but do not designate the instruments in hedge relationships. Excluding contracts addressing customer exposures, the amount of derivatives hedging risks on an economic basis at June 30, 2015, was not significant. Like other financial services institutions, we originate loans and extend credit, both of which expose us to credit risk. We actively manage our overall loan portfolio and the associated credit risk in a manner consistent with asset quality objectives and concentration risk tolerances to mitigate portfolio credit risk. Purchasing credit default swaps enables us to transfer to a third party a portion of the credit risk associated with a particular extension of credit, including situations where there is a forecasted sale of loans. Beginning in the first quarter of 2014, we began purchasing credit default swaps to reduce the credit risk associated with the debt securities held in our trading portfolio. We may also sell credit derivatives to offset our purchased credit default swap position prior to maturity. Although we use credit default swaps for risk management purposes, they are not treated as hedging instruments. We also enter into derivative contracts for other purposes, including: • interest rate swap, cap, and floor contracts entered into generally to accommodate the needs of commercial loan clients; • energy and base metal swap and options contracts entered into to accommodate the needs of clients; • futures contracts and positions with third parties that are intended to offset or mitigate the interest rate or market risk related to client positions discussed above; and • foreign exchange forward contracts and options entered into primarily to accommodate the needs of clients. These contracts are not designated as part of hedge relationships. Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments The following table summarizes the fair values of our derivative instruments on a gross and net basis as of June 30, 2015, December 31, 2014, and June 30, 2014. The change in the notional amounts of these derivatives by type from December 31, 2014, to June 30, 2015, indicates the volume of our derivative transaction activity during the first half of 2015. The notional amounts are not affected by bilateral collateral and master netting agreements. The derivative asset and liability balances are presented on a gross basis, prior to the application of bilateral collateral and master netting agreements. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Where master netting agreements are not in effect or are not enforceable under bankruptcy laws, we do not adjust those derivative assets and liabilities with counterparties. Securities collateral related to legally enforceable master netting agreements is not offset on the balance sheet. Our derivative instruments are included in “derivative assets” or “derivative liabilities” on the balance sheet, as indicated in the following table: June 30, 2015 December 31, 2014 June 30, 2014 Fair Value Fair Value Fair Value in millions Notional Derivative Derivative Notional Derivative Derivative Notional Derivative Derivative Derivatives designated as hedging instruments: Interest rate $ 17,324 $ 267 $ 22 $ 15,095 $ 272 $ 26 $ 14,459 $ 307 $ 17 Foreign exchange 333 17 4 371 8 — 425 4 8 Total 17,657 284 26 15,466 280 26 14,884 311 25 Derivatives not designated as hedging instruments: Interest rate 45,067 589 546 43,771 665 618 44,041 677 636 Foreign exchange 6,486 114 104 4,024 85 81 6,338 52 48 Commodity 1,537 379 365 1,544 608 594 1,854 182 177 Credit 505 4 5 512 5 7 653 4 8 Total 53,595 1,086 1,020 49,851 1,363 1,300 52,886 915 869 Netting adjustments (a) — (834 ) (486 ) — (1,034 ) (542 ) — (677 ) (443 ) Net derivatives in the balance sheet 71,252 536 560 65,317 609 784 67,770 549 451 Other collateral (b) — (96 ) (216 ) — (155 ) (241 ) — (65 ) (380 ) Net derivative amounts $ 71,252 $ 440 $ 344 $ 65,317 $ 454 $ 543 $ 67,770 $ 484 $ 71 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. (b) Other collateral represents the amount that cannot be used to offset our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The other collateral consists of securities and is exchanged under bilateral collateral and master netting agreements that allow us to offset the net derivative position with the related collateral. The application of the other collateral cannot reduce the net derivative position below zero. Therefore, excess other collateral, if any, is not reflected above. Fair value hedges. The following table summarizes the pre-tax net gains (losses) on our fair value hedges for the six-month periods ended June 30, 2015, and June 30, 2014, and where they are recorded on the income statement. Six months ended June 30, 2015 in millions Income Statement Location of Net Gains (Losses) on Derivative Net Gains Hedged Item Income Statement Location of Net Gains Interest rate Other income $ (17 ) Long-term debt Other income $ 17 (a) Interest rate Interest expense – Long-term debt 60 Total $ 43 $ 17 Six months ended June 30, 2014 in millions Income Statement Location of Net Gains (Losses) on Derivative Net Gains Hedged Item Income Statement Location of Net Gains (Losses) on Hedged Item Net Gains Interest rate Other income $ 13 Long-term debt Other income $ (13 ) (a) Interest rate Interest expense – Long-term debt 66 Total $ 79 (13 ) (a) Net gains (losses) on hedged items represent the change in fair value caused by fluctuations in interest rates. Cash flow hedges. Considering the interest rates, yield curves, and notional amounts as of June 30, 2015, we would expect to reclassify an estimated $37 million of after-tax net losses on derivative instruments from AOCI to income during the next 12 months for our cash flow hedges. In addition, we expect to reclassify approximately $1 million of net gains related to terminated cash flow hedges from AOCI to income during the next 12 months. As of June 30, 2015, the maximum length of time over which we hedge forecasted transactions is 13 years. Net investment hedges. The following table summarizes the pre-tax net gains (losses) on our cash flow and net investment hedges for the six-month periods ended June 30, 2015, and June 30, 2014, and where they are recorded on the income statement. The table includes the effective portion of net gains (losses) recognized in OCI during the period, the effective portion of net gains (losses) reclassified from OCI into income during the current period, and the portion of net gains (losses) recognized directly in income, representing the amount of hedge ineffectiveness. Six months ended June 30, 2015 in millions Net Gains (Losses) Income Statement Location of Net Gains (Losses) Net Gains (Losses) Reclassified Into Income Income Statement Location of Net Income Net Gains Recognized Cash Flow Hedges Interest rate $ 48 Interest income – Loans $ 45 Other income — Interest rate 1 Interest expense – Long-term debt (2 ) Other income — Interest rate 1 Investment banking and debt placement fees — Other income — Net Investment Hedges Foreign exchange contracts 17 Other Income — Other income — Total $ 67 $ 43 — Six months ended June 30, 2014 in millions Net Gains (Losses) Income Statement Location of Net Gains (Losses) Net Gains (Losses) From OCI Into Income Income Statement Income Net Gains Cash Flow Hedges Interest rate $ 40 Interest income – Loans $ 31 Other income — Interest rate (4 ) Interest expense – Long-term debt (2 ) Other income — Interest rate — Investment banking and debt placement fees — Other income — Net Investment Hedges Foreign exchange contracts (1 ) Other Income (1 ) Other income — Total $ 35 $ 28 — The after-tax change in AOCI resulting from cash flow and net investment hedges is as follows: in millions December 31, 2015 Reclassification June 30, AOCI resulting from cash flow and net investment hedges $ (8 ) $ 42 $ (27 ) $ 7 Nonhedging instruments. The following table summarizes the pre-tax net gains (losses) on our derivatives that are not designated as hedging instruments for the six-month periods ended June 30, 2015, and June 30, 2014, and where they are recorded on the income statement. Six months ended June 30, 2015 Six months ended June 30, 2014 in millions Corporate Income Other Income Total Corporate Income Other Income Total NET GAINS (LOSSES) Interest rate $ 9 — $ 9 $ 9 — $ 9 Foreign exchange 18 — 18 17 — 17 Commodity 3 — 3 2 — 2 Credit — $ (7 ) (7 ) — $ (8 ) (8 ) Total net gains (losses) $ 30 $ (7 ) $ 23 $ 28 $ (8 ) $ 20 Counterparty Credit Risk Like other financial instruments, derivatives contain an element of credit risk. This risk is measured as the expected positive replacement value of the contracts. We use several means to mitigate and manage exposure to credit risk on derivative contracts. We generally enter into bilateral collateral and master netting agreements that provide for the net settlement of all contracts with a single counterparty in the event of default. Additionally, we monitor counterparty credit risk exposure on each contract to determine appropriate limits on our total credit exposure across all product types. We review our collateral positions on a daily basis and exchange collateral with our counterparties in accordance with standard ISDA documentation, central clearing rules, and other related agreements. We generally hold collateral in the form of cash and highly rated securities issued by the U.S. Treasury, government-sponsored enterprises, or GNMA. The cash collateral netted against derivative assets on the balance sheet totaled $364 million at June 30, 2015, $518 million at December 31, 2014, and $289 million at June 30, 2014. The cash collateral netted against derivative liabilities totaled $16 million at June 30, 2015, $26 million at December 31, 2014, and $55 million at June 30, 2014. The relevant agreements that allow us to access the central clearing organizations to clear derivative transactions are not considered to be qualified master netting agreements. Therefore, we cannot net derivative contracts or offset those contracts with related cash collateral with these counterparties. At June 30, 2015, we posted $114 million of cash collateral with clearing organizations and held $3 million of cash collateral from clearing organizations. At December 31, 2014, we posted $56 million of cash collateral with clearing organizations and did not hold any cash collateral from clearing organizations. At June 30, 2014, we posted $35 million of cash collateral with clearing organizations and did not hold any cash collateral from clearing organizations. This additional cash collateral is included in “accrued income and other assets” and “accrued expense and other liabilities” on the balance sheet. The following table summarizes our largest exposure to an individual counterparty at the dates indicated. in millions June 30, December 31, June 30, Largest gross exposure (derivative asset) to an individual counterparty $ 105 $ 133 $ 117 Collateral posted by this counterparty 44 100 47 Derivative liability with this counterparty 90 31 108 Collateral pledged to this counterparty 37 — 44 Net exposure after netting adjustments and collateral 8 2 6 The following table summarizes the fair value of our derivative assets by type at the dates indicated. These assets represent our gross exposure to potential loss after taking into account the effects of bilateral collateral and master netting agreements and other means used to mitigate risk. in millions June 30, December 31, June 30, Interest rate $ 606 $ 607 $ 657 Foreign exchange 50 41 29 Commodity 243 478 152 Credit 1 1 — Derivative assets before collateral 900 1,127 838 Less: Related collateral 364 518 289 Total derivative assets $ 536 $ 609 $ 549 We enter into derivative transactions with two primary groups: broker-dealers and banks, and clients. Since these groups have different economic characteristics, we have different methods for managing counterparty credit exposure and credit risk. We enter into transactions with broker-dealers and banks for various risk management purposes. These types of transactions generally are high dollar volume. We generally enter into bilateral collateral and master netting agreements with these counterparties. We began clearing certain types of derivative transactions with these counterparties in June 2013, whereby the central clearing organizations become our counterparties subsequent to novation of the original derivative contracts. In addition, we began entering into derivative contracts through swap execution facilities during the quarter ended March 31, 2014. The swap clearing and swap trade execution requirements were mandated by the Dodd-Frank Act for the purpose of reducing counterparty credit risk and increasing transparency in the derivative market. At June 30, 2015, we had gross exposure of $714 million to broker-dealers and banks. We had net exposure of $162 million after the application of master netting agreements and cash collateral, where such qualifying agreements exist. We had net exposure of $41 million after considering $121 million of additional collateral held in the form of securities. We enter into transactions with clients to accommodate their business needs. These types of transactions generally are low dollar volume. We generally enter into master netting agreements with these counterparties. In addition, we mitigate our overall portfolio exposure and market risk by buying and selling U.S. Treasuries and Eurodollar futures, and entering into offsetting positions and other derivative contracts, sometimes with entities other than broker-dealers and banks. Due to the smaller size and magnitude of the individual contracts with clients, we generally do not exchange collateral in connection with these derivative transactions. To address the risk of default associated with the uncollateralized contracts, we have established a credit valuation adjustment (included in “derivative assets”) in the amount of $11 million at June 30, 2015, which we estimate to be the potential future losses on amounts due from client counterparties in the event of default. At December 31, 2014, the credit valuation adjustment was $9 million. At June 30, 2015, we had gross exposure of $413 million to client counterparties and other entities that are not broker-dealers or banks for derivatives that have associated master netting agreements. We had net exposure of $374 million on our derivatives with these counterparties after the application of master netting agreements, collateral, and the related reserve. In addition, the derivatives for one counterparty were guaranteed by a third party with a letter of credit totaling $25 million. Credit Derivatives We are both a buyer and seller of credit protection through the credit derivative market. We purchase credit derivatives to manage the credit risk associated with specific commercial lending and swap obligations as well as exposures to debt securities. We may also sell credit derivatives, mainly single-name credit default swaps, to offset our purchased credit default swap position prior to maturity. The following table summarizes the fair value of our credit derivatives purchased and sold by type as of June 30, 2015, December 31, 2014, and June 30, 2014. The fair value of credit derivatives presented below does not take into account the effects of bilateral collateral or master netting agreements. June 30, 2015 December 31, 2014 June 30, 2014 in millions Purchased Sold Net Purchased Sold Net Purchased Sold Net Single-name credit default swaps $ (2 ) — $ (2 ) $ (3 ) — $ (3 ) $ (3 ) — $ (3 ) Traded credit default swap indices 2 — 2 1 — 1 (1 ) — (1 ) Other — $ (1 ) (1 ) — — — — — — Total credit derivatives — $ (1 ) $ (1 ) $ (2 ) — $ (2 ) $ (4 ) — $ (4 ) Single-name credit default swaps are bilateral contracts whereby the seller agrees, for a premium, to provide protection against the credit risk of a specific entity (the “reference entity”) in connection with a specific debt obligation. The protected credit risk is related to adverse credit events, such as bankruptcy, failure to make payments, and acceleration or restructuring of obligations, identified in the credit derivative contract. As the seller of a single-name credit derivative, we may settle in one of two ways if the underlying reference entity experiences a predefined credit event. We may be required to pay the purchaser the difference between the par value and the market price of the debt obligation (cash settlement) or receive the specified referenced asset in exchange for payment of the par value (physical settlement). If we effect a physical settlement and receive our portion of the related debt obligation, we will join other creditors in the liquidation process, which may enable us to recover a portion of the amount paid under the credit default swap contract. We also may purchase offsetting credit derivatives for the same reference entity from third parties that will permit us to recover the amount we pay should a credit event occur. A traded credit default swap index represents a position on a basket or portfolio of reference entities. As a seller of protection on a credit default swap index, we would be required to pay the purchaser if one or more of the entities in the index had a credit event. Upon a credit event, the amount payable is based on the percentage of the notional amount allocated to the specific defaulting entity. The majority of transactions represented by the “other” category shown in the above table are risk participation agreements. In these transactions, the lead participant has a swap agreement with a customer. The lead participant (purchaser of protection) then enters into a risk participation agreement with a counterparty (seller of protection), under which the counterparty receives a fee to accept a portion of the lead participant’s credit risk. If the customer defaults on the swap contract, the counterparty to the risk participation agreement must reimburse the lead participant for the counterparty’s percentage of the positive fair value of the customer swap as of the default date. If the customer swap has a negative fair value, the counterparty has no reimbursement requirements. If the customer defaults on the swap contract and the seller fulfills its payment obligations under the risk participation agreement, the seller is entitled to a pro rata The following table provides information on the types of credit derivatives sold by us and held on the balance sheet at June 30, 2015, December 31, 2014, and June 30, 2014. The notional amount represents the maximum amount that the seller could be required to pay. The payment/performance risk assessment is based on the default probabilities for the underlying reference entities’ debt obligations using a Moody’s credit ratings matrix known as Moody’s “Idealized” Cumulative Default Rates. The payment/performance risk shown in the table represents a weighted-average of the default probabilities for all reference entities in the respective portfolios. These default probabilities are directly correlated to the probability that we will have to make a payment under the credit derivative contracts. June 30, 2015 December 31, 2014 June 30, 2014 dollars in millions Notional Average Payment / Notional Average Payment / Notional Average Payment / Single-name credit default swaps $ 5 .22 .87 % $ 5 .72 .87 % $ 45 .34 4.76 % Other 6 2.51 8.36 6 2.89 9.58 9 3.06 5.82 Total credit derivatives sold $ 11 — — $ 11 — — $ 54 — — Credit Risk Contingent Features We have entered into certain derivative contracts that require us to post collateral to the counterparties when these contracts are in a net liability position. The amount of collateral to be posted is based on the amount of the net liability and thresholds generally related to our long-term senior unsecured credit ratings with Moody’s and S&P. Collateral requirements also are based on minimum transfer amounts, which are specific to each Credit Support Annex (a component of the ISDA Master Agreement) that we have signed with the counterparties. In a limited number of instances, counterparties have the right to terminate their ISDA Master Agreements with us if our ratings fall below a certain level, usually investment-grade level (i.e., “Baa3” for Moody’s and “BBB-” for S&P). At June 30, 2015, KeyBank’s ratings were “A3” with Moody’s and “A-” with S&P, and KeyCorp’s ratings were “Baa1” with Moody’s and “BBB+” with S&P. As of June 30, 2015, the aggregate fair value of all derivative contracts with credit risk contingent features (i.e., those containing collateral posting or termination provisions based on our ratings) held by KeyBank that were in a net liability position totaled $243 million, which includes $212 million in derivative assets and $455 million in derivative liabilities. We had $218 million in cash and securities collateral posted to cover those positions as of June 30, 2015. The aggregate fair value of all derivative contracts with credit risk contingent features held by KeyCorp as of June 30, 2015, that were in a net liability position totaled $6 million, which consists solely of derivative liabilities. We had $6 million in collateral posted to cover those positions as of June 30, 2015. The following table summarizes the additional cash and securities collateral that KeyBank would have been required to deliver under the ISDA Master Agreements had the credit risk contingent features been triggered for the derivative contracts in a net liability position as of June 30, 2015, December 31, 2014, and June 30, 2014. The additional collateral amounts were calculated based on scenarios under which KeyBank’s ratings are downgraded one, two, or three ratings as of June 30, 2015, December 31, 2014, and June 30, 2014, and take into account all collateral already posted. A similar calculation was performed for KeyCorp, and no additional collateral would have been required as of June 30, 2015, while additional collateral of less than $1 million and $3 million would have been required as of December 31, 2014, and June 30, 2014, respectively. For more information about the credit ratings for KeyBank and KeyCorp, see the discussion under the heading “Factors affecting liquidity” in the section entitled “Liquidity risk management” in Item 2 of this report. June 30, 2015 December 31, 2014 June 30, 2014 in millions Moody’s S&P Moody’s S&P Moody’s S&P KeyBank’s long-term senior unsecured credit ratings A3 A- A3 A- A3 A- One rating downgrade $ 4 $ 4 $ 1 $ 1 $ 1 $ 1 Two rating downgrades 4 4 1 1 1 1 Three rating downgrades 6 6 3 3 1 1 KeyBank’s long-term senior unsecured credit rating is currently four ratings above noninvestment grade at Moody’s and S&P. If KeyBank’s ratings had been downgraded below investment grade as of June 30, 2015, payments of up to $7 million would have been required to either terminate the contracts or post additional collateral for those contracts in a net liability position, taking into account all collateral already posted. If KeyCorp’s ratings had been downgraded below investment grade as of June 30, 2015, payments of less than $1 million would have been required to either terminate the contracts or post additional collateral for those contracts in a net liability position, taking into account all collateral already posted.

Mortgage Servicing Assets

Mortgage Servicing Assets	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Mortgage Servicing Assets	8. Mortgage Servicing Assets We originate and periodically sell commercial mortgage loans but continue to service those loans for the buyers. We also may purchase the right to service commercial mortgage loans for other lenders. We record a servicing asset if we purchase or retain the right to service loans in exchange for servicing fees that exceed the going market servicing rate and are considered more than adequate compensation for servicing. Changes in the carrying amount of mortgage servicing assets are summarized as follows: Six months ended June 30, in millions 2015 2014 Balance at beginning of period $ 323 $ 332 Servicing retained from loan sales 28 13 Purchases 25 28 Amortization (47 ) (50 ) Balance at end of period $ 329 $ 323 Fair value at end of period $ 423 $ 402 The fair value of mortgage servicing assets is determined by calculating the present value of future cash flows associated with servicing the loans. This calculation uses a number of assumptions that are based on current market conditions. The range and weighted-average of the significant unobservable inputs used to fair value our mortgage servicing assets at June 30, 2015, and June 30, 2014, along with the valuation techniques, are shown in the following table: June 30, 2015 dollars in millions Valuation Technique Significant Unobservable Input Range (Weighted-Average) Mortgage servicing assets Discounted cash flow Prepayment speed 1.70 - 14.90% (4.70%) Expected defaults 1.00 - 3.00% (1.80%) Residual cash flows discount rate 7.00 - 15.00% (7.80%) Escrow earn rate 0.70 - 3.30% (2.00%) Servicing cost $150 - $2,750 ($1,088) Loan assumption rate 0.20 - 3.00% (1.41%) Percentage late 0.00 - 2.00% (0.32%) June 30, 2014 dollars in millions Valuation Technique Significant Unobservable Input Range (Weighted-Average) Mortgage servicing assets Discounted cash flow Prepayment speed 2.00 - 11.60% (5.70%) Expected defaults 1.00 - 3.00% (2.00%) Residual cash flows discount rate 7.00 - 14.10% (7.80%) Escrow earn rate 0.50 - 2.90% (1.60%) Servicing cost $150 - $5,000 ($990) Loan assumption rate 0.00 - 3.00% (1.59%) Percentage late 0.00 - 2.00% (0.33%) If these economic assumptions change or prove incorrect, the fair value of mortgage servicing assets may also change. Expected credit losses, escrow earn rates, and discount rates are critical to the valuation of servicing assets. Estimates of these assumptions are based on how a market participant would view the respective rates and reflect historical data associated with the loans, industry trends, and other considerations. Actual rates may differ from those estimated due to changes in a variety of economic factors. A decrease in the value assigned to the escrow earn rates would cause a decrease in the fair value of our mortgage servicing assets. An increase in the assumed default rates of commercial mortgage loans or an increase in the assigned discount rates would cause a decrease in the fair value of our mortgage servicing assets. Contractual fee income from servicing commercial mortgage loans totaled $22 million for the six-month period ended June 30, 2015, and $26 million for the six-month period ended June 30, 2014. We have elected to account for servicing assets using the amortization method. The amortization of servicing assets is determined in proportion to, and over the period of, the estimated net servicing income. The amortization of servicing assets for each period, as shown in the table at the beginning of this note, is recorded as a reduction to fee income. Both the contractual fee income and the amortization are recorded in “mortgage servicing fees” on the income statement. Additional information pertaining to the accounting for mortgage and other servicing assets is included in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Servicing Assets” on page 122 of our 2014 Form 10-K.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Variable Interest Entities	A VIE is a partnership, limited liability company, trust, or other legal entity that meets any one of the following criteria: • The entity does not have sufficient equity to conduct its activities without additional subordinated financial support from another party. • The entity’s investors lack the power to direct the activities that most significantly impact the entity’s economic performance. • The entity’s equity at risk holders do not have the obligation to absorb losses or the right to receive residual returns. • The voting rights of some investors are not proportional to their economic interests in the entity, and substantially all of the entity’s activities involve, or are conducted on behalf of, investors with disproportionately few voting rights. Our VIEs are summarized below. We define a “significant interest” in a VIE as a subordinated interest that exposes us to a significant portion, but not the majority, of the VIE’s expected losses or residual returns, even though we do not have the power to direct the activities that most significantly impact the entity’s economic performance. On September 30, 2014, we sold the residual interests in all of our outstanding education loan securitization trusts and therefore no longer have a significant interest in those trusts. We deconsolidated the securitization trusts as of September 30, 2014, and removed the trust assets and liabilities from our balance sheet. Further information regarding these education loan securitization trusts is provided in Note 11 (“Acquisitions and Discontinued Operations”) under the heading “Education lending.” Consolidated VIEs Unconsolidated VIEs Total Total Total Total Maximum in millions Assets Liabilities Assets Liabilities Exposure to Loss June 30, 2015 LIHTC funds $ 1 $ 1 $ 55 — — LIHTC investments N/A N/A 1,305 $ 4 $ 520 December 31, 2014 LIHTC funds $ 1 $ 1 $ 55 — — LIHTC investments N/A N/A 1,234 $ 4 $ 521 June 30, 2014 LIHTC funds $ 1 $ 2 $ 97 — — Education loan securitization trusts 1,730 1,677 N/A N/A N/A LIHTC investments N/A N/A 1,549 $ 5 $ 508 Our involvement with VIEs is described below. Consolidated VIEs LIHTC guaranteed funds. We have not formed new guaranteed funds or added LIHTC partnerships since October 2003. However, we continue to act as asset manager and to provide occasional funding for existing funds under a guarantee obligation. As a result of this guarantee obligation, we have determined that we are the primary beneficiary of these guaranteed funds. Additional information on return guarantee agreements with LIHTC investors is presented in Note 15 (“Contingent Liabilities and Guarantees”) under the heading “Guarantees.” In accordance with the applicable accounting guidance for distinguishing liabilities from equity, third-party interests associated with our LIHTC guaranteed funds are considered mandatorily redeemable instruments and are recorded in “accrued expense and other liabilities” on the balance sheet. However, the FASB has indefinitely deferred the measurement and recognition provisions of this accounting guidance for mandatorily redeemable third-party interests associated with finite-lived subsidiaries, such as our LIHTC guaranteed funds. We adjust our financial statements each period for the third-party investors’ share of the guaranteed funds’ profits and losses. At June 30, 2015, we estimated the settlement value of these third-party interests to be between zero and $4 million, while the recorded value, including reserves, totaled $4 million. The partnership agreement for each of our guaranteed funds requires the fund to be dissolved by a certain date. Unconsolidated VIEs LIHTC nonguaranteed funds. LIHTC investments. We have additional investments in unconsolidated LIHTC operating partnerships that are held by the consolidated LIHTC guaranteed funds. Total assets of these operating partnerships were approximately $470 million at June 30, 2015, and December 31, 2014, and $769 million at June 30, 2014. The tax credits and deductions associated with these properties are allocated to the funds’ investors based on their ownership percentages. We have determined that we are not the primary beneficiary of these partnerships because the general partners have the power to direct the activities that most significantly impact their economic performance, and the obligation to absorb expected losses and right to receive residual returns. Information regarding our exposure to loss in connection with these guaranteed funds is included in Note 15 under the heading “Return guarantee agreement with LIHTC investors.” We amortize these investments over the period that we expect to receive the tax benefits. During the first six months of 2015, we recognized $59 million of amortization and $66 million of tax credits associated with these investments within income taxes on our income statement. During the first six months of 2014, we recognized $51 million of amortization and $60 million of tax credits associated with these investments within income taxes on our income statement. We had $1.1 billion and $988 million of investments in LIHTC at June 30, 2015, and June 30, 2014, respectively. These investments are recorded in “accrued income and other assets” on our balance sheet. Commercial and residential real estate investments and principal investments.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes Income Tax Provision In accordance with the applicable accounting guidance, the principal method established for computing the provision for income taxes in interim periods requires us to make our best estimate of the effective tax rate expected to be applicable for the full year. This estimated effective tax rate is then applied to interim consolidated pre-tax operating income to determine the interim provision for income taxes. The effective tax rate, which is the provision for income taxes as a percentage of income from continuing operations before income taxes, was 26.3% for the second quarter of 2015 and 23.1% for the second quarter of 2014. The effective tax rates are below our combined federal and state statutory tax rate of 37.2% primarily due to income from investments in tax-advantaged assets such as corporate-owned life insurance and credits associated with investments in low-income housing projects. Deferred Tax Asset At June 30, 2015, from continuing operations, we had a net federal deferred tax asset of $195 million and a net state deferred tax asset of $24 million, compared to a net federal deferred tax asset of $174 million and a net state deferred tax asset of $20 million at December 31, 2014, and a net federal deferred tax asset of $135 million and a net state deferred tax asset of $6 million at June 30, 2014, included in “accrued income and other assets” on the balance sheet. To determine the amount of deferred tax assets that are more-likely-than-not to be realized, and therefore recorded, we conduct a quarterly assessment of all available evidence. This evidence includes, but is not limited to, taxable income in prior periods, projected future taxable income, and projected future reversals of deferred tax items. These assessments involve a degree of subjectivity and may undergo change. Based on these criteria, we had a valuation allowance of less than $1 million at June 30, 2015, and at December 31, 2014, and $1 million at June 30, 2014, associated with certain state net operating loss carryforwards and state credit carryforwards. Unrecognized Tax Benefits As permitted under the applicable accounting guidance for income taxes, it is our policy to recognize interest and penalties related to unrecognized tax benefits in income tax expense. Deferred tax assets were reduced in the financial statements for unrecognized tax benefits by less than $1 million at June 30, 2015, and by $1 million at December 31, 2014, and June 30, 2014.

Acquisitions and Discontinued O

Acquisitions and Discontinued Operations	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Acquisitions and Discontinued Operations	11. Acquisitions and Discontinued Operations Acquisitions Pacific Crest Securities. Discontinued operations Education lending. As of January 1, 2010, we consolidated our 10 outstanding education lending securitization trusts since we held the residual interests and are the master servicer with the power to direct the activities that most significantly influence the economic performance of the trusts. On September 30, 2014, we sold the residual interests in all of our outstanding education lending securitization trusts to a third party for $57 million. In selling the residual interests, we no longer have the obligation to absorb losses or the right to receive benefits related to the securitization trusts. Therefore, in accordance with the applicable accounting guidance, we deconsolidated the securitization trusts and removed trust assets of $1.7 billion and trust liabilities of $1.6 billion from our balance sheet at September 30, 2014. As part of the sale and deconsolidation, we recognized an after-tax loss of $25 million, which was recorded in “income (loss) from discontinued operations, net of tax” on our income statement. We continue to service the securitized loans in eight of the securitization trusts and receive servicing fees, whereby we are adequately compensated, as well as remain a counterparty to derivative contracts with three of the securitization trusts. We retained interests in the securitization trusts through our ownership of an insignificant percentage of certificates in two of the securitization trusts and two interest-only strips in one of the securitization trusts. These retained interests were remeasured at fair value on September 30, 2014, and their fair value of $1 million was recorded in “discontinued assets” on our balance sheet. These assets were valued using a similar approach and inputs that have been used to value the education loan securitization trust loans and securities, which are further discussed later in this note. “Income (loss) from discontinued operations, net of taxes” on the income statement includes (i) the changes in fair value of the assets and liabilities of the education loan securitization trusts and the loans at fair value in portfolio (discussed later in this note), and (ii) the interest income and expense from the loans and the securities of the trusts and the loans in portfolio at both amortized cost and fair value. These amounts are shown separately in the following table. Gains and losses attributable to changes in fair value are recorded as a component of “noninterest income” or “noninterest expense.” Interest income and interest expense related to the loans and securities are included as components of “net interest income.” The components of “income (loss) from discontinued operations, net of taxes” for the education lending business are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Net interest income $ 10 $ 23 $ 20 $ 46 Provision for credit losses — 6 2 10 Net interest income after provision for credit losses 10 17 18 36 Noninterest income (1 ) (56 ) 3 (70 ) Noninterest expense 4 6 8 12 Income (loss) before income taxes 5 (45 ) 13 (46 ) Income taxes 2 (17 ) 5 (17 ) Income (loss) from discontinued operations, net of taxes (a) $ 3 $ (28 ) $ 8 $ (29 ) (a) Includes after-tax charges of $5 million and $8 million for the three-month periods ended June 30, 2015, and June 30, 2014, respectively, and $11 million and $17 million for the six-month periods ended June 30, 2015, and June 30, 2014, respectively, determined by applying a matched funds transfer pricing methodology to the liabilities assumed necessary to support the discontinued operations. The discontinued assets and liabilities of our education lending business included on the balance sheet are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Held-to-maturity securities $ 1 $ 1 — Trust loans at fair value — — $ 1,711 Portfolio loans at fair value — 191 209 Loans, net of unearned income (a) 1,962 2,104 2,242 Less: Allowance for loan and lease losses 22 29 32 Net loans 1,940 2,266 4,130 Portfolio loans held for sale at fair value 179 — — Trust accrued income and other assets at fair value — — 19 Accrued income and other assets 34 38 41 Total assets $ 2,154 $ 2,305 $ 4,190 Trust accrued expense and other liabilities at fair value — — $ 17 Trust securities at fair value — — 1,660 Total liabilities — — $ 1,677 (a) At June 30, 2015, December 31, 2014, and June 30, 2014, unearned income was less than $1 million. The discontinued education lending business consisted of loans in portfolio (recorded at fair value) and loans in portfolio (recorded at carrying value with appropriate valuation reserves). As of June 30, 2015, we decided to sell the portfolio loans that are recorded at fair value, and these loans were reclassified to portfolio loans held for sale at fair value within discontinued operations. The assets and liabilities in the securitization trusts (recorded at fair value) were removed with the deconsolidation of the securitization trusts on September 30, 2014. At June 30, 2015, education loans include 1,767 TDRs with a recorded investment of approximately $19 million (pre-modification and post-modification). A specifically allocated allowance of $1 million was assigned to these loans as of June 30, 2015. There have been no significant payment defaults. There are no significant commitments outstanding to lend additional funds to these borrowers. Additional information regarding TDR classification and ALLL methodology is provided in Note 4 (“Asset Quality”). In the past, as part of our education lending business model, we originated and securitized education loans. The process of securitization involved taking a pool of loans from our balance sheet and selling them to a bankruptcy-remote qualifying special purpose entity, or trust. This trust then issued securities to investors in the capital markets to raise funds to pay for the loans. The cash flows generated from the loans pays holders of the securities issued. As the transferor, we retained a portion of the risk in the form of a residual interest and also retained the right to service the securitized loans and receive servicing fees. The trust assets can be used only to settle the obligations or securities the trusts issue; the assets cannot be sold and the liabilities cannot be transferred. The loans in the trusts consist of both private and government-guaranteed loans. The security holders or beneficial interest holders do not have recourse to Key. We no longer had economic interest or risk of loss associated with these education loan securitization trusts as of September 30, 2014, and therefore, the securitization trusts were deconsolidated. During the second quarter of 2014, additional market information became available. Based on this information and our related internal analysis, we adjusted certain assumptions related to valuing the loans in the securitization trusts. As a result, we recognized a net after-tax loss of $22 million during the second quarter of 2014 related to the fair value of the loans and securities in the securitization trusts. These losses resulted in a reduction in the value of our economic interest in these trusts. We record all income and expense (including fair value adjustments) through “income (loss) from discontinued operations, net of tax” on our income statement. On June 27, 2014, we purchased the private loans from one of the education loan securitization trusts through the execution of a clean-up call option. The trust used the cash proceeds from the sale of these loans to retire the outstanding securities related to these private loans, and there are no future commitments or obligations to the holders of the securities. The trust no longer has any loans or securities and will remain in existence for approximately one year from the time the clean-up call was exercised. The portfolio loans were valued using an internal discounted cash flow method, which was affected by assumptions for defaults, expected credit losses, discount rates, and prepayments. The portfolio loans are considered to be Level 3 assets since we rely on unobservable inputs when determining fair value. At June 30, 2015, there were $179 million of loans held for sale that were previously purchased from three of the outstanding securitizations trusts pursuant to the legal terms of these particular trusts. These loans were transferred to held for sale in June 2015 and continue to be accounted for at fair value. As of June 30, 2015, the portfolio loans held for sale were valued based on indicative bids to sell the loans. These portfolio loans were previously valued using an internal discounted cash flow model, which was affected by assumptions for defaults, loss severity, discount rates, and prepayments. These loans are considered Level 3 assets since we rely on unobservable inputs when determining fair value. Our valuation process for these loans as well as the trust loans and securities is discussed in more detail below. Portfolio loans held for sale accounted for at fair value had a value of $179 million at June 30, 2015. Portfolio loans accounted for at fair value had a value of $191 million at December 31, 2014, and $209 million at June 30, 2014. When we first consolidated the education loan securitization trusts, we made an election to record them at fair value. Carrying the assets and liabilities of the trusts at fair value better depicted our economic interest. The fair value of the assets and liabilities of the trusts was determined by calculating the present value of the future expected cash flows. We relied on unobservable inputs (Level 3) when determining the fair value of the assets and liabilities of the trusts because observable market data was not available. Our valuation process is described in more detail below. Corporate Treasury, within our Finance area, is responsible for the quarterly valuation process that previously determined the fair value of our student loans held in portfolio that were accounted for at fair value and for our loans and securities in our education loan securitization trusts. Corporate Treasury provided these fair values to a Working Group Committee (the “Working Group”) comprising representatives from the line of business, Credit and Market Risk Management, Accounting, Business Finance (part of our Finance area), and Corporate Treasury. The Working Group is a subcommittee of the Fair Value Committee that is discussed in more detail in Note 5 (“Fair Value Measurements”). The Working Group reviewed all significant inputs and assumptions and approved the resulting fair values. The Working Group reviewed actual performance trends of the loans on a quarterly basis and used statistical analysis and qualitative measures to determine assumptions for future performance. Predictive models that incorporate delinquency and charge-off trends along with economic outlooks assisted the Working Group to forecast future defaults. The Working Group used this information to formulate the credit outlook related to the loans. Higher projected defaults, fewer expected recoveries, elevated prepayment speeds, and higher discount rates would be expected to result in a lower fair value of the portfolio loans at fair value. Default expectations and discount rate changes had the most significant impact on the fair values of the loans. Increased cash flow uncertainty, whether through higher defaults and prepayments or fewer recoveries, can result in higher discount rates for use in the fair value process for these loans. This process was previously used in the valuation of the education loan securitization trust loans. The valuation process for the portfolio loans that were accounted for at fair value was based on a discounted cash flow analysis using a model purchased from a third party and maintained by Corporate Treasury. The valuation process began with loan-level data that was aggregated into pools based on underlying loan structural characteristics (i.e., current unpaid principal balance, contractual term, interest rate). Cash flows for these loan pools were developed using a financial model that reflected certain assumptions for defaults, recoveries, status changes, and prepayments. A net earnings stream, taking into account cost of funding, was calculated and discounted back to the measurement date using an appropriate discount rate. This resulting amount was used to determine the present value of the loans, which represented their fair value to a market participant. The unobservable inputs set forth in the following table are reviewed and approved by the Working Group on a quarterly basis. The Working Group determines these assumptions based on available data, discussions with appropriate individuals within and outside of Key, and the knowledge and experience of the Working Group members. A similar discounted cash flow approach to that described above was used on a quarterly basis by Corporate Treasury to determine the fair value of the trust securities. In valuing these securities, the discount rates used were provided by a third-party valuation consultant. These discount rates were based primarily on secondary market spread indices for similar student loans and asset-backed securities and were developed by the consultant using market-based data. On a quarterly basis, the Working Group reviewed the discount rate inputs used in the valuation process for reasonableness. A quarterly variance analysis reconciled valuation changes in the model used to calculate the fair value of the trust loans and securities and the portfolio loans at fair value. This quarterly analysis considered loan and securities run-off, yields, future default and recovery changes, and the timing of cash releases to us from the trusts. We also performed back-testing to compare expected defaults to actual experience; the impact of future defaults could significantly affect the fair value of these loans and securities over time. In addition, our internal model validation group periodically performed a review to ensure the accuracy and validity of the model for determining the fair value of these loans and securities. The following table shows the significant unobservable inputs used to measure the fair value of the portfolio loans held for sale, portfolio loans, and education loan securitization trust loans and securities accounted for at fair value at June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 Fair Value of Level 3 Valuation Significant dollars in millions Assets and Liabilities Technique Unobservable Input Range Portfolio loans held for sale accounted for at fair value $ 179 Market approach Indicative bids 88.24 - 105.55% December 31, 2014 Fair Value of Level 3 Valuation Significant Range dollars in millions Assets and Liabilities Technique Unobservable Input (Weighted-Average) Portfolio loans accounted for at fair value $ 191 Discounted cash flow Prepayment speed 5.40 - 5.60% (5.50%) Loss severity 2.00 - 77.00% (25.66%) Discount rate 3.90 - 4.00% (3.92%) Default rate .86 - 1.70% (1.12%) June 30, 2014 Fair Value of Level 3 Valuation Significant Range dollars in millions Assets and Liabilities Technique Unobservable Input (Weighted-Average) Trust loans and portfolio loans accounted for at fair value $ 1,920 Discounted cash flow Prepayment speed 4.00 - 13.50% (6.97%) Loss severity 2.00 - 82.00% (52.01%) Discount rate 2.10 - 10.50% (3.52%) Default rate 8.50 - 26.00% (20.59%) Trust securities 1,660 Discounted cash flow Discount rate 1.20 - 3.00% (2.16%) The following table shows the principal and fair value amounts for our portfolio loans held for sale at fair value, portfolio loans at carrying value, trust loans at fair value, and portfolio loans at fair value at June 30, 2015, December 31, 2014, and June 30, 2014. Our policies for determining past due loans, placing loans on nonaccrual, applying payments on nonaccrual loans, and resuming accrual of interest are disclosed in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Nonperforming Loans” beginning on page 116 of our 2014 Form 10-K. June 30, 2015 December 31, 2014 June 30, 2014 in millions Principal Fair Value Principal Fair Value Principal Fair Value Portfolio loans held for sale at fair value Accruing loans past due 90 days or more $ 5 $ 5 — — — — Portfolio loans at carrying value Accruing loans past due 90 days or more $ 26 N/A $ 29 N/A $ 29 N/A Loans placed on nonaccrual status 6 N/A 11 N/A 9 N/A Trust loans at fair value Accruing loans past due 90 days or more — — — — $ 23 $ 23 Loans placed on nonaccrual status — — — — 7 7 Portfolio loans at fair value Accruing loans past due 90 days or more — — $ 5 $ 5 $ 6 $ 6 Loans placed on nonaccrual status — — — — 1 1 The following table shows the portfolio loans held for sale at fair value, portfolio loans at fair value, and the consolidated trusts’ assets and liabilities at fair value and their related contractual values at June 30, 2015, December 31, 2014, and June 30, 2014. June 30, 2015 December 31, 2014 June 30, 2014 Contractual Fair Contractual Fair Contractual Fair in millions Amount Value Amount Value Amount Value ASSETS Portfolio loans held for sale $ 179 $ 179 — — — — Portfolio loans — — $ 192 $ 191 $ 207 $ 209 Trust loans — — — — 1,740 1,711 Trust other assets — — — — 19 19 LIABILITIES Trust securities — — — — $ 1,752 $ 1,660 Trust other liabilities — — — — 17 17 The following tables present the assets and liabilities of the portfolio loans held for sale, portfolio loans, and consolidated education loan securitization trusts measured at fair value as well as the portfolio loans that are measured at fair value on a recurring basis at June 30, 2015, December 31, 2014, and June 30, 2014. June 30, 2015 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Portfolio loans held for sale — — $ 179 $ 179 Total assets on a recurring basis at fair value — — $ 179 $ 179 December 31, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Portfolio loans — — $ 191 $ 191 Total assets on a recurring basis at fair value — — $ 191 $ 191 June 30, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Portfolio loans — — $ 209 $ 209 Trust loans — — 1,711 1,711 Trust other assets — — 19 19 Total assets on a recurring basis at fair value — — $ 1,939 $ 1,939 LIABILITIES MEASURED ON A RECURRING BASIS Trust securities — — $ 1,660 $ 1,660 Trust other liabilities — — 17 17 Total liabilities on a recurring basis at fair value — — $ 1,677 $ 1,677 The following table shows the change in the fair values of the Level 3 portfolio loans held for sale, portfolio loans, and consolidated education loan securitization trusts and portfolio loans for the three- and six-month periods ended June 30, 2015, and June 30, 2014. Portfolio Student Portfolio Trust Trust Trust Loans Held Student Student Other Trust Other in millions For Sale Loans Loans Assets Securities Liabilities Balance at December 31, 2014 — $ 191 — — — — Gains (losses) recognized in earnings (a) — 1 — — — — Settlements — (13 ) — — — — Loans transferred to held for sale $ 179 (179 ) — — — — Balance at June 30, 2015 (b) $ 179 — — — — — Balance at March 31, 2015 — $ 187 — — — — Gains (losses) recognized in earnings (a) — (2 ) — — — — Settlements — (6 ) — — — — Loans transferred to held for sale $ 179 (179 ) — — — — Balance at June 30, 2015 (b) $ 179 — — — — — Balance at December 31, 2013 — $ 147 $ 1,960 $ 20 $ 1,834 $ 20 Gains (losses) recognized in earnings (a) — (4 ) (34 ) — 33 — Purchases — 74 — — — — Sales — — (74 ) — — — Settlements — (8 ) (141 ) (1 ) (207 ) (3 ) Balance at June 30, 2014 (b) — $ 209 $ 1,711 $ 19 $ 1,660 $ 17 Balance at March 31, 2014 — $ 143 $ 1,893 $ 19 $ 1,796 $ 20 Gains (losses) recognized in earnings (a) — (4 ) (36 ) — 17 — Purchases — 74 — — — — Sales — — (74 ) — — — Settlements — (4 ) (72 ) — (153 ) (3 ) Balance at June 30, 2014 (b) — $ 209 $ 1,711 $ 19 $ 1,660 $ 17 (a) Gains (losses) were driven primarily by fair value adjustments. (b) There were no issuances, transfers into Level 3, or transfers out of Level 3 for the three- and six-month periods ended June 30, 2015, and June 30, 2014. Victory Capital Management and Victory Capital Advisors. The results of this discontinued business are included in “income (loss) from discontinued operations, net of taxes” on the income statement. The components of “income (loss) from discontinued operations, net of taxes” for Victory, which includes the additional gain recorded as of March 31, 2014, on the sale of this business, are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Net interest income — $ 1 — $ 2 Noninterest income — — — 10 Noninterest expense — — — — Income (loss) before income taxes — 1 — 12 Income taxes — 1 — 5 Income (loss) from discontinued operations, net of taxes — — — $ 7 The discontinued assets and liabilities of Victory included on the balance sheet are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Seller note (a) — — $ 28 Total assets — — $ 28 Accrued expense and other liabilities — — — Total liabilities — — — (a) At June 30, 2014, the only remaining asset of Victory was the Seller note. The Seller note was paid off during the fourth quarter of 2014. Austin Capital Management, Ltd. The results of this discontinued business are included in “income (loss) from discontinued operations, net of taxes” on the income statement. The components of “income (loss) from discontinued operations, net of taxes” for Austin are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Noninterest expense — — — $ 4 Income (loss) before income taxes — — — (4 ) Income taxes — — — (2 ) Income (loss) from discontinued operations, net of taxes — — — $ (2 ) The discontinued assets and liabilities of Austin included on the balance sheet are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Cash and due from banks $ 15 $ 19 $ 19 Total assets $ 15 $ 19 $ 19 Accrued expense and other liabilities — $ 3 $ 3 Total liabilities — $ 3 $ 3 Combined discontinued operations Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Net interest income $ 10 $ 24 $ 20 $ 48 Provision for credit losses — 6 2 10 Net interest income after provision for credit losses 10 18 18 38 Noninterest income (1 ) (56 ) 3 (60 ) Noninterest expense 4 6 8 16 Income (loss) before income taxes 5 (44 ) 13 (38 ) Income taxes 2 (16 ) 5 (14 ) Income (loss) from discontinued operations, net of taxes (a) $ 3 $ (28 ) $ 8 $ (24 ) (a) Includes after-tax charges of $5 million and $8 million for the three-month periods ended June 30, 2015, and June 30, 2014, respectively, and $11 million and $17 million for the six-month periods ended June 30, 2015, and June 30, 2014, respectively, determined by applying a matched funds transfer pricing methodology to the liabilities assumed necessary to support the discontinued operations. The combined assets and liabilities of the discontinued operations are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Cash and due from banks $ 15 $ 19 $ 19 Held-to-maturity securities 1 1 — Seller note — — 28 Trust loans at fair value — — 1,711 Portfolio loans at fair value — 191 209 Loans, net of unearned income (a) 1,962 2,104 2,242 Less: Allowance for loan and lease losses 22 29 32 Net loans 1,940 2,266 4,130 Portfolio loans held for sale at fair value 179 — — Trust accrued income and other assets at fair value — — 19 Accrued income and other assets 34 38 41 Total assets $ 2,169 $ 2,324 $ 4,237 Trust accrued expense and other liabilities at fair value — — $ 17 Accrued expense and other liabilities — $ 3 3 Trust securities at fair value — — 1,660 Total liabilities — $ 3 $ 1,680 (a) At June 30, 2015, December 31, 2014, and June 30, 2014, unearned income was less than $1 million.

Securities Financing Activities

Securities Financing Activities	6 Months Ended
	Jun. 30, 2015
Brokers and Dealers [Abstract]
Securities Financing Activities	We enter into repurchase and reverse repurchase agreements and securities borrowed transactions (securities financing agreements) primarily to finance our inventory positions, acquire securities to cover short positions, and to settle other securities obligations. We account for these securities financing agreements as collateralized financing transactions. Repurchase and reverse repurchase agreements are recorded on the balance sheet at the amounts that the securities will be subsequently sold or repurchased. Securities borrowed transactions are recorded on the balance sheet at the amounts of cash collateral advanced. While our securities financing agreements incorporate a right of set off, the assets and liabilities are reported on a gross basis. Repurchase agreements and securities borrowed transactions are included in “short-term investments” on the balance sheet; reverse repurchase agreements are included in “federal funds purchased and securities sold under repurchase agreements.” During the third quarter of 2014, our broker-dealer subsidiary, KeyBanc Capital Markets, Inc. (“KBCM”), moved from a self-clearing organization to using a third-party organization for clearing purposes. In connection with this change, KBCM became an introducing broker-dealer, whereby it no longer needs to fund its business operations by entering into repurchase, reverse repurchase, or securities borrowed agreements. KBCM had no securities financing agreements outstanding at June 30, 2015, or December 31, 2014. The following table summarizes our securities financing agreements at June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 Gross Amount Presented in Netting Net in millions Balance Sheet Adjustments (a) Collateral (b) Amounts Offsetting of financial assets: Reverse repurchase agreements $ 3 $ (3 ) — — Total $ 3 $ (3 ) — — Offsetting of financial liabilities: Repurchase agreements (c) $ 4 $ (3 ) $ (1 ) — Total $ 4 $ (3 ) $ (1 ) — December 31, 2014 Gross Amount Presented in Netting Net in millions Balance Sheet Adjustments (a) Collateral (b) Amounts Offsetting of financial assets: Reverse repurchase agreements $ 3 $ (1 ) $ (2 ) — Total $ 3 $ (1 ) $ (2 ) — Offsetting of financial liabilities: Repurchase agreements $ 1 $ (1 ) — — Total $ 1 $ (1 ) — — June 30, 2014 Gross Amount Presented in Netting Net in millions Balance Sheet Adjustments (a) Collateral (b) Amounts Offsetting of financial assets: Reverse repurchase agreements $ 540 $ (216 ) $ (315 ) $ 9 Securities borrowed 24 — (23 ) 1 Total $ 564 $ (216 ) $ (338 ) $ 10 Offsetting of financial liabilities: Repurchase agreements $ 495 $ (216 ) $ (279 ) — Total $ 495 $ (216 ) $ (279 ) — (a) Netting adjustments take into account the impact of master netting agreements that allow us to settle with a single counterparty on a net basis. (b) These adjustments take into account the impact of bilateral collateral agreements that allow us to offset the net positions with the related collateral. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above. (c) Repurchase agreements are collateralized by U.S. Treasury securities and contracted on an overnight basis. Like other financing transactions, securities financing agreements contain an element of credit risk. To mitigate and manage credit risk exposure, we generally enter into master netting agreements and other collateral arrangements that give us the right, in the event of default, to liquidate collateral held and to offset receivables and payables with the same counterparty. Additionally, we establish and monitor limits on our counterparty credit risk exposure by product type. For the reverse repurchase agreements, we monitor the value of the underlying securities we received from counterparties and either request additional collateral or return a portion of the collateral based on the value of those securities. We generally hold collateral in the form of highly rated securities issued by the U.S. Treasury and fixed income securities. In addition, we may need to provide collateral to counterparties under our repurchase agreements and securities borrowed transactions. In general, the collateral we pledge and receive can be sold or repledged by the secured parties.

Employee Benefits

Employee Benefits	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Benefits	13. Employee Benefits Pension Plans Effective December 31, 2009, we amended our cash balance pension plan and other defined benefit plans to freeze all benefit accruals and close the plans to new employees. We will continue to credit participants’ existing account balances for interest until they receive their plan benefits. We changed certain pension plan assumptions after freezing the plans. The components of net pension cost (benefit) for all funded and unfunded plans are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Interest cost on PBO $ 10 $ 12 $ 20 $ 24 Expected return on plan assets (14 ) (17 ) (28 ) (34 ) Amortization of losses 5 4 9 8 Net pension cost (benefit) $ 1 $ (1 ) $ 1 $ (2 ) Other Postretirement Benefit Plans We sponsor a retiree healthcare plan that all employees age 55 with five years of service (or employees age 50 with 15 years of service who are terminated under conditions that entitle them to a severance benefit) are eligible to participate. Participant contributions are adjusted annually. We may provide a subsidy toward the cost of coverage for certain employees hired before 2001 with a minimum of 15 years of service at the time of termination. We use a separate VEBA trust to fund the retiree healthcare plan. The components of net postretirement benefit cost for all funded and unfunded plans are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Interest cost on APBO $ 1 $ 1 $ 2 $ 2 Expected return on plan assets — (1 ) (1 ) (2 ) Amortization of unrecognized prior service credit (1 ) — (1 ) — Net postretirement benefit cost — — — —

Trust Preferred Securities Issu

Trust Preferred Securities Issued by Unconsolidated Subsidiaries	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Trust Preferred Securities Issued by Unconsolidated Subsidiaries	14. Trust Preferred Securities Issued by Unconsolidated Subsidiaries We own the outstanding common stock of business trusts formed by us that issued corporation-obligated mandatorily redeemable trust preferred securities. The trusts used the proceeds from the issuance of their trust preferred securities and common stock to buy debentures issued by KeyCorp. These debentures are the trusts’ only assets; the interest payments from the debentures finance the distributions paid on the mandatorily redeemable trust preferred securities. We unconditionally guarantee the following payments or distributions on behalf of the trusts: • required distributions on the trust preferred securities; • the redemption price when a capital security is redeemed; and • the amounts due if a trust is liquidated or terminated. The Regulatory Capital Rules, discussed in “Supervision and regulation” in Item 2 of this report, implement a phase-out of trust preferred securities as Tier 1 capital, consistent with the requirements of the Dodd-Frank Act. For “standardized approach” banking organizations such as Key, the phase-out period began on January 1, 2015, and by 2016 will require us to treat our mandatorily redeemable trust preferred securities as Tier 2 capital. As of June 30, 2015, the trust preferred securities issued by the KeyCorp capital trusts represent $85 million, or .9%, of our total qualifying Tier 1 capital, net of goodwill. The trust preferred securities, common stock, and related debentures are summarized as follows: Principal Interest Rate Maturity Trust Preferred Amount of of Trust Preferred of Trust Preferred Securities, Common Debentures, Securities and Securities and dollars in millions Net of Discount (a) Stock Net of Discount (b) Debentures (c) Debentures June 30, 2015 KeyCorp Capital I $ 156 $ 6 $ 162 1.014 % 2028 KeyCorp Capital II 107 4 111 6.875 2029 KeyCorp Capital III 139 4 143 7.750 2029 Total $ 402 $ 14 $ 416 4.903 % — December 31, 2014 $ 408 $ 14 $ 422 4.926 % — June 30, 2014 $ 397 $ 14 $ 411 4.856 % — (a) The trust preferred securities must be redeemed when the related debentures mature, or earlier if provided in the governing indenture. Each issue of trust preferred securities carries an interest rate identical to that of the related debenture. Certain trust preferred securities include basis adjustments related to fair value hedges totaling $62 million at June 30, 2015, $68 million at December 31, 2014, and $57 million at June 30, 2014. See Note 7 (“Derivatives and Hedging Activities”) for an explanation of fair value hedges. (b) We have the right to redeem these debentures. If the debentures purchased by KeyCorp Capital I are redeemed before they mature, the redemption price will be the principal amount, plus any accrued but unpaid interest. If the debentures purchased by KeyCorp Capital II or KeyCorp Capital III are redeemed before they mature, the redemption price will be the greater of: (i) the principal amount, plus any accrued but unpaid interest, or (ii) the sum of the present values of principal and interest payments discounted at the Treasury Rate (as defined in the applicable indenture), plus 20 basis points for KeyCorp Capital II or 25 basis points for KeyCorp Capital III or 50 basis points in the case of redemption upon either a tax or a capital treatment event for either KeyCorp Capital II or KeyCorp Capital III, plus any accrued but unpaid interest. The principal amount of certain debentures includes basis adjustments related to fair value hedges totaling $62 million at June 30, 2015, $68 million at December 31, 2014, and $57 million at June 30, 2014. See Note 7 for an explanation of fair value hedges. The principal amount of debentures, net of discounts, is included in “long-term debt” on the balance sheet. (c) The interest rates for the trust preferred securities issued by KeyCorp Capital II and KeyCorp Capital III are fixed. KeyCorp Capital I has a floating interest rate, equal to three-month LIBOR plus 74 basis points, that reprices quarterly. The total interest rates are weighted-average rates.

Contingent Liabilities and Guar

Contingent Liabilities and Guarantees	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities and Guarantees	15. Contingent Liabilities and Guarantees Legal Proceedings See Note 20 (“Commitments, Contingent Liabilities and Guarantees”) under the heading “Legal Proceedings” on page 206 of our 2014 Form 10-K for a description of a proceeding styled In Re: Checking Account Overdraft Litigation. Other litigation. Guarantees We are a guarantor in various agreements with third parties. The following table shows the types of guarantees that we had outstanding at June 30, 2015. Information pertaining to the basis for determining the liabilities recorded in connection with these guarantees is included in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Guarantees” beginning on page 124 of our 2014 Form 10-K. Maximum Potential June 30, 2015 in millions Undiscounted Liability Future Payments Recorded Financial guarantees: Standby letters of credit $ 10,933 $ 64 Recourse agreement with FNMA 1,714 4 Return guarantee agreement with LIHTC investors 4 4 Written put options (a) 2,092 82 Total $ 14,743 $ 154 (a) The maximum potential undiscounted future payments represent notional amounts of derivatives qualifying as guarantees. We determine the payment/performance risk associated with each type of guarantee described below based on the probability that we could be required to make the maximum potential undiscounted future payments shown in the preceding table. We use a scale of low (0% to 30% probability of payment), moderate (greater than 30% to 70% probability of payment), or high (greater than 70% probability of payment) to assess the payment/performance risk, and have determined that the payment/performance risk associated with each type of guarantee outstanding at June 30, 2015, is low. Standby letters of credit. Recourse agreement with FNMA. Return guarantee agreement with LIHTC investors. As shown in the previous table, KAHC maintained a reserve in the amount of $4 million at June 30, 2015, which is sufficient to cover estimated future obligations under the guarantees. The maximum exposure to loss reflected in the table represents undiscounted future payments due to investors for the return on and of their investments. These guarantees have expiration dates that extend through 2018, but KAHC has not formed any new partnerships under this program since October 2003. Additional information regarding these partnerships is included in Note 9 (“Variable Interest Entities”). Written put options. Written put options where the counterparty is a broker-dealer or bank are accounted for as derivatives at fair value but are not considered guarantees since these counterparties typically do not hold the underlying instruments. In addition, we are a purchaser and seller of credit derivatives, which are further discussed in Note 7. Default guarantees. Other Off-Balance Sheet Risk Other off-balance sheet risk stems from financial instruments that do not meet the definition of a guarantee as specified in the applicable accounting guidance, and from other relationships. Indemnifications provided in the ordinary course of business. Intercompany guarantees.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Accumulated Other Comprehensive Income	16. Accumulated Other Comprehensive Income Our changes in AOCI for the three and six months ended June 30, 2015, and June 30, 2014, are as follows: Unrealized gains Unrealized gains Foreign currency Net pension and (losses) on securities (losses) on derivative translation postretirement in millions available for sale financial instruments adjustment benefit costs Total Balance at December 31, 2014 $ (4 ) $ (8 ) $ 22 $ (366 ) $ (356 ) Other comprehensive income before reclassification, net of income taxes 3 42 (14 ) — 31 Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) 1 (27 ) 1 5 (20 ) Net current-period other comprehensive income, net of income taxes 4 15 (13 ) 5 11 Balance at June 30, 2015 — $ 7 $ 9 $ (361 ) $ (345 ) Balance at March 31, 2015 $ 51 $ 24 $ 9 $ (363 ) $ (279 ) Other comprehensive income before reclassification, net of income taxes (52 ) (3 ) (1 ) — (56 ) Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) 1 (14 ) 1 2 (10 ) Net current-period other comprehensive income, net of income taxes (51 ) (17 ) — 2 (66 ) Balance at June 30, 2015 — $ 7 $ 9 $ (361 ) $ (345 ) Balance at December 31, 2013 $ (63 ) $ (11 ) $ 42 $ (320 ) $ (352 ) Other comprehensive income before reclassification, net of income taxes 57 22 — — 79 Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) — (18 ) (3 ) 5 (16 ) Net current-period other comprehensive income, net of income taxes 57 4 (3 ) 5 63 Balance at June 30, 2014 $ (6 ) $ (7 ) $ 39 $ (315 ) $ (289 ) Balance at March 31, 2014 $ (34 ) $ (12 ) $ 40 $ (318 ) $ (324 ) Other comprehensive income before reclassification, net of income taxes 28 15 — — 43 Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) — (10 ) (1 ) 3 (8 ) Net current-period other comprehensive income, net of income taxes 28 5 (1 ) 3 35 Balance at June 30, 2014 $ (6 ) $ (7 ) $ 39 $ (315 ) $ (289 ) (a) See table below for details about these reclassifications. Our reclassifications out of AOCI for the three and six months ended June 30, 2015, and June 30, 2014, are as follows: Amount Reclassified from Six months ended June 30, 2015 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on available for sale securities Realized losses $ (1 ) Other income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Unrealized gains (losses) on derivative financial instruments Interest rate $ 45 Interest income — Loans Interest rate (2 ) Interest expense — Long term debt 43 Income (loss) from continuing operations before income taxes 16 Income taxes $ 27 Income (loss) from continuing operations Foreign currency translation adjustment $ (1 ) Corporate services income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (9 ) Personnel expense Amortization of unrecognized prior service cost 1 Personnel expense (8 ) Income (loss) from continuing operations before income taxes (3 ) Income taxes $ (5 ) Income (loss) from continuing operations Amount Reclassified from Three months ended June 30, 2015 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on available for sale securities Realized losses $ (1 ) Other income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Unrealized gains (losses) on derivative financial instruments Interest rate $ 23 Interest income — Loans Interest rate (1 ) Interest expense — Long term debt 22 Income (loss) from continuing operations before income taxes 8 Income taxes $ 14 Income (loss) from continuing operations Foreign currency translation adjustment $ (1 ) Corporate services income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (5 ) Personnel expense Amortization of unrecognized prior service cost 1 Personnel expense (4 ) Income (loss) from continuing operations before income taxes (2 ) Income taxes $ (2 ) Income (loss) from continuing operations Amount Reclassified from Six months ended June 30, 2014 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on derivative financial instruments Interest rate $ 31 Interest income — Loans Interest rate (2 ) Interest expense — Long term debt Foreign exchange contracts (1 ) Other income 28 Income (loss) from continuing operations before income taxes 10 Income taxes $ 18 Income (loss) from continuing operations Foreign currency translation adjustment $ 3 Corporate services income 3 Income (loss) from continuing operations before income taxes — Income taxes $ 3 Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (8 ) Personnel expense (8 ) Income (loss) from continuing operations before income taxes (3 ) Income taxes $ (5 ) Income (loss) from continuing operations Amount Reclassified from Three months ended June 30, 2014 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on derivative financial instruments Interest rate $ 16 Interest income — Loans Interest rate (1 ) Interest expense — Long term debt Foreign exchange contracts (1 ) Other income 14 Income (loss) from continuing operations before income taxes 4 Income taxes $ 10 Income (loss) from continuing operations Foreign currency translation adjustment — Corporate services income — Income (loss) from continuing operations before income taxes $ (1 ) Income taxes $ 1 Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (4 ) Personnel expense (4 ) Income (loss) from continuing operations before income taxes (1 ) Income taxes $ (3 ) Income (loss) from continuing operations

Shareholder' Equity

Shareholder' Equity	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Shareholder' Equity	17. Shareholders’ Equity Comprehensive Capital Plan As previously reported and as authorized by the Board and pursuant to our 2015 capital plan submitted to and not objected to by the Federal Reserve, we have authority to repurchase up to $725 million of our common shares, which include repurchases to offset issuances of common shares under our employee compensation plans. Common share repurchases under the 2015 capital plan began in the second quarter of 2015 and are expected to be executed through the second quarter of 2016. During the second quarter of 2015, we completed $129 million of common share repurchases under this authorization. Our 2015 capital plan also proposed an increase in our quarterly common share dividend from $.065 to $.075 per share. This dividend increase was approved in May 2015 by the Board, who subsequently declared a quarterly dividend of $.075 per common share for the second quarter of 2015. An additional potential increase in our quarterly common share dividend, up to $.085 per share, will be considered by the Board in 2016 for the fifth quarter of the 2015 capital plan.

Line of Business Results

Line of Business Results	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Line of Business Results	18. Line of Business Results The specific lines of business that constitute each of the major business segments (operating segments) are described below. Key Community Bank Key Community Bank serves individuals and small to mid-sized businesses through its 12-state branch network. Individuals are provided branch-based deposit and investment products, personal finance services, and loans, including residential mortgages, home equity, credit card, and various types of installment loans. In addition, financial, estate and retirement planning, asset management services, and Delaware Trust capabilities are offered to assist high-net-worth clients with their banking, trust, portfolio management, insurance, charitable giving, and related needs. Small businesses are provided deposit, investment and credit products, and business advisory services. Mid-sized businesses are provided products and services that include commercial lending, cash management, equipment leasing, investment and employee benefit programs, succession planning, access to capital markets, derivatives, and foreign exchange. Key Corporate Bank Key Corporate Bank is a full-service corporate and investment bank focused principally on serving the needs of middle market clients in seven industry sectors: consumer, energy, healthcare, industrial, public sector, real estate, and technology. Key Corporate Bank delivers a broad product suite of banking and capital markets products to its clients, including syndicated finance, debt and equity capital markets, commercial payments, equipment finance, commercial mortgage banking, derivatives, foreign exchange, financial advisory, and public finance. Key Corporate Bank is also a significant servicer of commercial mortgage loans and a significant special servicer of CMBS. Key Corporate Bank also delivers many of its product capabilities to clients of Key Community Bank. Other Segments Other Segments consist of Corporate Treasury, Principal Investing, and various exit portfolios. Reconciling Items Total assets included under “Reconciling Items” primarily represent the unallocated portion of nonearning assets of corporate support functions. Charges related to the funding of these assets are part of net interest income and are allocated to the business segments through noninterest expense. Reconciling Items also includes intercompany eliminations and certain items that are not allocated to the business segments because they do not reflect their normal operations. The table on the following pages shows selected financial data for our major business segments for the three- and six- month periods ended June 30, 2015, and June 30, 2014. The information was derived from the internal financial reporting system that we use to monitor and manage our financial performance. GAAP guides financial accounting, but there is no authoritative guidance for “management accounting” — the way we use our judgment and experience to make reporting decisions. Consequently, the line of business results we report may not be comparable to line of business results presented by other companies. The selected financial data is based on internal accounting policies designed to compile results on a consistent basis and in a manner that reflects the underlying economics of the businesses. In accordance with our policies: • Net interest income is determined by assigning a standard cost for funds used or a standard credit for funds provided based on their assumed maturity, prepayment, and/or repricing characteristics. • Indirect expenses, such as computer servicing costs and corporate overhead, are allocated based on assumptions regarding the extent that each line of business actually uses the services. • The consolidated provision for credit losses is allocated among the lines of business primarily based on their actual net loan charge-offs, adjusted periodically for loan growth and changes in risk profile. The amount of the consolidated provision is based on the methodology that we use to estimate our consolidated ALLL. This methodology is described in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Allowance for Loan and Lease Losses” beginning on page 117 of our 2014 Form 10-K. • Income taxes are allocated based on the statutory federal income tax rate of 35% and a blended state income tax rate (net of the federal income tax benefit) of 2.2%. • Capital is assigned to each line of business based on economic equity. Developing and applying the methodologies that we use to allocate items among our lines of business is a dynamic process. Accordingly, financial results may be revised periodically to reflect enhanced alignment of expense base allocation drivers, changes in the risk profile of a particular business, or changes in our organizational structure. Three months ended June 30, dollars in millions Key Community Bank Key Corporate Bank 2015 2014 2015 2014 SUMMARY OF OPERATIONS Net interest income (TE) $ 362 $ 361 $ 227 $ 210 Noninterest income 197 192 250 185 Total revenue (TE) (a) 559 553 477 395 Provision for credit losses 7 25 38 (4 ) Depreciation and amortization expense 14 16 11 7 Other noninterest expense 435 427 241 200 Income (loss) from continuing operations before income taxes (TE) 103 85 187 192 Allocated income taxes and TE adjustments 38 32 52 54 Income (loss) from continuing operations 65 53 135 138 Income (loss) from discontinued operations, net of taxes — — — — Net income (loss) 65 53 135 138 Less: Net income (loss) attributable to noncontrolling interests — — — 3 Net income (loss) attributable to Key $ 65 $ 53 $ 135 $ 135 AVERAGE BALANCES (b) Loans and leases $ 30,707 $ 30,034 $ 25,298 $ 22,886 Total assets (a) 32,758 32,132 31,228 28,007 Deposits 50,766 50,232 19,708 16,357 OTHER FINANCIAL DATA Net loan charge-offs (b) $ 20 $ 33 $ 12 $ (2 ) Return on average allocated equity (b) 9.75 % 7.83 % 30.15 % 35.72 % Return on average allocated equity 9.75 7.83 30.15 35.72 Average full-time equivalent employees (c) 7,400 7,569 2,058 1,940 Six months ended June 30, dollars in millions Key Community Bank Key Corporate Bank 2015 2014 2015 2014 SUMMARY OF OPERATIONS Net interest income (TE) $ 720 $ 724 $ 440 $ 406 Noninterest income 388 375 438 380 Total revenue (TE) (a) 1,108 1,099 878 786 Provision for credit losses 36 36 46 (7 ) Depreciation and amortization expense 29 34 20 14 Other noninterest expense 860 846 447 394 Income (loss) from continuing operations before income taxes (TE) 183 183 365 385 Allocated income taxes and TE adjustments 68 68 101 111 Income (loss) from continuing operations 115 115 264 274 Income (loss) from discontinued operations, net of taxes — — — — Net income (loss) 115 115 264 274 Less: Net income (loss) attributable to noncontrolling interests — — 2 2 Net income (loss) attributable to Key $ 115 $ 115 $ 262 $ 272 AVERAGE BALANCES (b) Loans and leases $ 30,684 $ 29,916 $ 25,012 $ 22,441 Total assets (a) 32,737 32,025 30,765 27,591 Deposits 50,592 50,073 19,141 16,175 OTHER FINANCIAL DATA Net loan charge-offs (b) $ 49 $ 61 $ 8 $ (14 ) Return on average allocated equity (b) 8.57 % 8.41 % 28.89 % 35.87 % Return on average allocated equity 8.57 8.41 28.89 35.87 Average full-time equivalent employees (c) 7,426 7,633 2,057 1,928 (a) Substantially all revenue generated by our major business segments is derived from clients that reside in the United States. Substantially all long-lived assets, including premises and equipment, capitalized software, and goodwill held by our major business segments, are located in the United States. (b) From continuing operations. (c) The number of average full-time equivalent employees was not adjusted for discontinued operations. Other Segments Total Segments Reconciling Items Key 2015 2014 2015 2014 2015 2014 2015 2014 — $ 6 $ 589 $ 577 $ 2 $ 2 $ 591 $ 579 $ 44 81 491 458 (3 ) (3 ) 488 455 44 87 1,080 1,035 (1 ) (1 ) 1,079 1,034 (4 ) (8 ) 41 13 — (1 ) 41 12 2 3 27 26 38 38 65 64 13 17 689 644 (43 ) (21 ) 646 623 33 75 323 352 4 (17 ) 327 335 1 18 91 104 — (22 ) 91 82 32 57 232 248 4 5 236 253 — — — — 3 (28 ) 3 (28 ) 32 57 232 248 7 (23 ) 239 225 1 3 1 6 — — 1 6 $ 31 $ 54 $ 231 $ 242 $ 7 $ (23 ) $ 238 $ 219 $ 1,903 $ 2,615 $ 57,908 $ 55,535 $ 70 $ 76 $ 57,978 $ 55,611 27,023 25,897 91,009 86,036 650 705 91,659 86,741 442 635 70,916 67,224 (78 ) (101 ) 70,838 67,123 $ 3 — $ 35 $ 31 $ 1 $ (1 ) $ 36 $ 30 31.72 % 43.93 % 19.05 % 20.55 % .28 % .35 % 8.90 % 9.47 % 31.72 43.93 19.05 20.55 .49 (1.61 ) 9.01 8.40 14 46 9,472 9,555 3,983 4,312 13,455 13,867 Other Segments Total Segments Reconciling Items Key 2015 2014 2015 2014 2015 2014 2015 2014 $ 4 $ 16 $ 1,164 $ 1,146 $ 4 $ 2 $ 1,168 $ 1,148 107 137 933 892 (8 ) (2 ) 925 890 111 153 2,097 2,038 (4 ) — 2,093 2,038 (7 ) (12 ) 75 17 1 (1 ) 76 16 5 6 54 54 75 76 129 130 25 40 1,332 1,280 (81 ) (59 ) 1,251 1,221 88 119 636 687 1 (16 ) 637 671 11 24 180 203 (9 ) (23 ) 171 180 77 95 456 484 10 7 466 491 — — — — 8 (24 ) 8 (24 ) 77 95 456 484 18 (17 ) 474 467 1 4 3 6 — — 3 6 $ 76 $ 91 $ 453 $ 478 $ 18 $ (17 ) $ 471 $ 461 $ 1,973 $ 2,763 $ 57,669 $ 55,120 $ 77 $ 61 $ 57,746 $ 55,181 26,484 25,902 89,986 85,518 664 684 90,650 86,202 454 605 70,187 66,853 (80 ) (142 ) 70,107 66,711 $ 7 $ 4 $ 64 $ 51 — $ (1 ) $ 64 $ 50 37.94 % 36.41 % 18.50 % 20.12 % .36 % .25 % 4.38 % 4.66 % 37.94 36.41 18.50 20.12 .64 (.61 ) 4.45 4.43 15 59 9,498 9,620 4,014 4,341 13,512 13,961

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Offsetting Derivative Positions	Offsetting Derivative Positions In accordance with the applicable accounting guidance, we take into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts held with a single counterparty on a net basis, and to offset the net derivative position with the related cash collateral when recognizing derivative assets and liabilities. Additional information regarding derivative offsetting is provided in Note 7 (“Derivatives and Hedging Activities”).
Troubled Debt Restructurings	Troubled debt restructurings. In January 2014, the FASB issued new accounting guidance that clarifies the definition of when an in substance repossession or foreclosure occurs for purposes of creditor reclassification of residential real estate collateralized consumer mortgage loans by derecognizing the loan and recognizing the collateral asset. This accounting guidance was effective for reporting periods beginning after December 15, 2014 (effective January 1, 2015, for us) and could be implemented using either a modified retrospective method or prospective method. Early adoption was permitted. We elected to implement the new accounting guidance using a prospective approach. The adoption of this accounting guidance did not have a material effect on our financial condition or results of operations. We provide the disclosure related to consumer residential mortgages required by this new accounting guidance in Note 4 (“Asset Quality”).
Transfers and Servicing of Financial Assets	Transfers and servicing of financial assets.
Discontinued Operations	Discontinued operations.
Investments in Qualified Affordable Housing Projects	Investments in qualified affordable housing projects.
Fair Value Measurement	Fair value measurement.
Cloud Computing Fees	Cloud computing fees.
Imputation of Interest	Imputation of interest.
Consolidation	Consolidation. In August 2014, the FASB issued new accounting guidance that clarifies how to measure the financial assets and the financial liabilities of a consolidated collateralized financing entity. This accounting guidance will be effective for interim and annual reporting periods beginning after December 15, 2015 (effective January 1, 2016, for us) and can be implemented using either a retrospective method or a cumulative-effect approach. Early adoption is permitted. The adoption of this accounting guidance is not expected to have a material effect on our financial condition or results of operations.
Derivatives and Hedging	Derivatives and hedging.
Going Concern	Going concern.
Stock-based Compensation	Stock-based compensation.
Revenue Recognition	Revenue recognition.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Common Share	Our basic and diluted earnings per common share are calculated as follows: Three months ended June 30, Six months ended June 30, dollars in millions, except per share amounts 2015 2014 2015 2014 EARNINGS Income (loss) from continuing operations $ 236 $ 253 $ 466 $ 491 Less: Net income (loss) attributable to noncontrolling interests 1 6 3 6 Income (loss) from continuing operations attributable to Key 235 247 463 485 Less: Dividends on Series A Preferred Stock 5 5 11 11 Income (loss) from continuing operations attributable to Key common shareholders 230 242 452 474 Income (loss) from discontinued operations, net of taxes (a) 3 (28 ) 8 (24 ) Net income (loss) attributable to Key common shareholders $ 233 $ 214 $ 460 $ 450 WEIGHTED-AVERAGE COMMON SHARES Weighted-average common shares outstanding (000) 839,454 875,298 843,992 879,986 Effect of convertible preferred stock — 20,602 — — Effect of common share options and other stock awards 6,858 6,237 7,695 6,698 Weighted-average common shares and potential common shares outstanding (000) (b) 846,312 902,137 851,687 886,684 EARNINGS PER COMMON SHARE Income (loss) from continuing operations attributable to Key common shareholders $ .27 $ .28 $ .53 $ .54 Income (loss) from discontinued operations, net of taxes (a) — (.03 ) .01 (.03 ) Net income (loss) attributable to Key common shareholders (c) .28 .24 .54 .51 Income (loss) from continuing operations attributable to Key common shareholders — assuming dilution $ .27 $ .27 $ .52 $ .53 Income (loss) from discontinued operations, net of taxes (a) — (.03 ) .01 (.03 ) Net income (loss) attributable to Key common shareholders — assuming dilution (c) .27 .24 .53 .51 (a) In April 2009, we decided to wind down the operations of Austin, a subsidiary that specialized in managing hedge fund investments for institutional customers. In September 2009, we decided to discontinue the education lending business conducted through Key Education Resources, the education payment and financing unit of KeyBank. In February 2013, we decided to sell Victory to a private equity fund. As a result of these decisions, we have accounted for these businesses as discontinued operations. For further discussion regarding the income (loss) from discontinued operations, see Note 11 (“Acquisitions and Discontinued Operations”). (b) Assumes conversion of common share options and other stock awards and/or convertible preferred stock, as applicable. (c) EPS may not foot due to rounding.

Loans and Loans Held for Sale (

Loans and Loans Held for Sale (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Loans by Category	Our loans by category are summarized as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Commercial, financial and agricultural (a) $ 29,285 $ 27,982 $ 26,327 Commercial real estate: Commercial mortgage 7,874 8,047 7,946 Construction 1,254 1,100 1,047 Total commercial real estate loans 9,128 9,147 8,993 Commercial lease financing (b) 4,010 4,252 4,241 Total commercial loans 42,423 41,381 39,561 Residential — prime loans: Real estate — residential mortgage 2,252 2,225 2,189 Home equity: Key Community Bank 10,296 10,366 10,379 Other 236 267 300 Total home equity loans 10,532 10,633 10,679 Total residential — prime loans 12,784 12,858 12,868 Consumer other — Key Community Bank 1,595 1,560 1,514 Credit cards 753 754 718 Consumer other: Marine 673 779 888 Other 36 49 51 Total consumer other 709 828 939 Total consumer loans 15,841 16,000 16,039 Total loans (c) (d) $ 58,264 $ 57,381 $ 55,600 (a) Loan balances include $89 million, $88 million, and $94 million of commercial credit card balances at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. (b) Commercial lease financing includes receivables held as collateral for a secured borrowing of $191 million, $302 million, and $375 million at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. Principal reductions are based on the cash payments received from these related receivables. Additional information pertaining to this secured borrowing is included in Note 18 (“Long-Term Debt”) beginning on page 202 of our 2014 Form 10-K. (c) At June 30, 2015, total loans include purchased loans of $125 million, of which $12 million were PCI loans. At December 31, 2014, total loans include purchased loans of $138 million, of which $13 million were PCI loans. At June 30, 2014, total loans include purchased loans of $151 million, of which $15 million were PCI loans. (d) Total loans exclude loans of $2 billion at June 30, 2015, $2.3 billion at December 31, 2014, and $4.2 billion at June 30, 2014, related to the discontinued operations of the education lending business. Additional information pertaining to these loans is provided in Note 11 (“Acquisitions and Discontinued Operations”).
Loans Held for Sale	Our loans held for sale are summarized as follows: in millions June 30, December 31, June 30, Commercial, financial and agricultural $ 217 $ 63 $ 181 Real estate — commercial mortgage 576 638 221 Commercial lease financing 7 15 10 Real estate — residential mortgage 35 18 23 Total loans held for sale (a) $ 835 $ 734 $ 435 (a) Total loans held for sale exclude loans held for sale of $179 million at June 30, 2015, related to the discontinued operations of the education lending business. Additional information pertaining to these loans is provided in Note 11.
Summary of Changes in Loans Held for Sale	Our quarterly summary of changes in loans held for sale follows: June 30, December 31, June 30, in millions 2015 2014 2014 Balance at beginning of the period $ 1,649 $ 784 $ 401 New originations 1,650 2,465 978 Transfers from (to) held to maturity, net 6 2 (8 ) Loan sales (2,466 ) (2,516 ) (934 ) Loan draws (payments), net (4 ) (1 ) (2 ) Balance at end of period (a) $ 835 $ 734 $ 435 (a) Total loans held for sale exclude loans held for sale of $179 million at June 30, 2015, related to the discontinued operations of the education lending business. Additional information pertaining to these loans is provided in Note 11.

Asset Quality (Tables)

Asset Quality (Tables)	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Nonperforming Assets and Past Due Loans	Our nonperforming assets and past due loans were as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Total nonperforming loans (a), (b) $ 419 $ 418 $ 396 Nonperforming loans held for sale — — 1 OREO (c) 20 18 12 Other nonperforming assets 1 — 1 Total nonperforming assets $ 440 $ 436 $ 410 Nonperforming assets from discontinued operations — education lending (d) $ 6 $ 11 $ 19 Restructured loans included in nonperforming loans $ 170 $ 157 $ 142 Restructured loans with an allocated specific allowance (e) 79 82 59 Specifically allocated allowance for restructured loans (f) 36 34 30 Accruing loans past due 90 days or more $ 66 $ 96 $ 83 Accruing loans past due 30 through 89 days 181 235 274 (a) Loan balances exclude $12 million, $13 million, and $15 million of PCI loans at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. (b) Includes carrying value of consumer residential mortgage loans in the process of foreclosure of approximately $116 million at June 30, 2015. (c) Includes carrying value of foreclosed residential real estate of approximately $15 million at June 30, 2015. (d) Restructured loans of approximately $19 million, $17 million, and $18 million are included in discontinued operations at June 30, 2015, December 31, 2014, and June 30, 2014, respectively. See Note 11 (“Acquisitions and Discontinued Operations”) for further discussion. (e) Included in individually impaired loans allocated a specific allowance. (f) Included in allowance for individually evaluated impaired loans.
Breakdown of Individually Impaired Loans	The following tables set forth a further breakdown of individually impaired loans as of June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 in millions Recorded Unpaid Principal Specific Average Recorded Investment (a) Balance (b) Allowance Investment With no related allowance recorded: Commercial, financial and agricultural $ 9 $ 56 — $ 15 Commercial real estate: Commercial mortgage 10 14 — 12 Construction 7 7 — 7 Total commercial real estate loans 17 21 — 19 Total commercial loans 26 77 — 34 Real estate — residential mortgage 22 22 — 22 Home equity: Key Community Bank 60 60 — 61 Other 2 2 — 2 Total home equity loans 62 62 — 63 Consumer other: Marine 1 1 — 1 Total consumer other 1 1 — 1 Total consumer loans 85 85 — 86 Total loans with no related allowance recorded 111 162 — 120 With an allowance recorded: Commercial, financial and agricultural 73 86 $ 24 67 Commercial real estate: Commercial mortgage 6 7 1 6 Total commercial real estate loans 6 7 1 6 Total commercial loans 79 93 25 73 Real estate — residential mortgage 33 33 5 33 Home equity: Key Community Bank 53 53 17 51 Other 10 10 2 11 Total home equity loans 63 63 19 62 Consumer other — Key Community Bank 3 3 — 3 Credit cards 3 3 — 3 Consumer other: Marine 40 40 3 40 Other 2 2 — 2 Total consumer other 42 42 3 42 Total consumer loans 144 144 27 143 Total loans with an allowance recorded 223 237 52 216 Total $ 334 $ 399 $ 52 $ 336 (a) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on our consolidated balance sheet. (b) The Unpaid Principal Balance represents the customer’s legal obligation to us. Unpaid Average December 31, 2014 in millions Recorded Principal Specific Recorded Investment (a) Balance (b) Allowance Investment With no related allowance recorded: Commercial, financial and agricultural $ 6 $ 17 — $ 8 Commercial real estate: Commercial mortgage 15 20 — 19 Construction 5 6 — 7 Total commercial real estate loans 20 26 — 26 Total commercial loans 26 43 — 34 Real estate — residential mortgage 24 24 — 30 Home equity: Key Community Bank 62 63 — 63 Other 1 1 — 2 Total home equity loans 63 64 — 65 Consumer other: Marine 2 2 — 2 Total consumer other 2 2 — 2 Total consumer loans 89 90 — 97 Total loans with no related allowance recorded 115 133 — 131 With an allowance recorded: Commercial, financial and agricultural 37 37 $ 9 28 Commercial real estate: Commercial mortgage 6 6 2 6 Construction 3 3 1 2 Total commercial real estate loans 9 9 3 8 Total commercial loans 46 46 12 36 Real estate — residential mortgage 31 31 5 25 Home equity: Key Community Bank 46 46 16 43 Other 11 11 2 11 Total home equity loans 57 57 18 54 Consumer other — Key Community Bank 4 4 — 3 Credit cards 4 4 — 4 Consumer other: Marine 43 43 5 45 Other 2 2 — 2 Total consumer other 45 45 5 47 Total consumer loans 141 141 28 133 Total loans with an allowance recorded 187 187 40 169 Total $ 302 $ 320 $ 40 $ 300 (a) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on our consolidated balance sheet. (b) The Unpaid Principal Balance represents the customer’s legal obligation to us. Unpaid Average June 30, 2014 in millions Recorded Principal Specific Recorded Investment (a) Balance (b) Allowance Investment With no related allowance recorded: Commercial, financial and agricultural $ 12 $ 18 — $ 23 Commercial real estate: Commercial mortgage 23 28 — 23 Construction 6 17 — 6 Total commercial real estate loans 29 45 — 29 Total commercial loans 41 63 — 52 Real estate — residential mortgage 25 25 — 26 Home equity: Key Community Bank 66 66 — 68 Other 2 2 — 2 Total home equity loans 68 68 — 70 Consumer other: Marine 2 2 — 2 Total consumer other 2 2 — 2 Total consumer loans 95 95 — 98 Total loans with no related allowance recorded 136 158 — 150 With an allowance recorded: Commercial, financial and agricultural 5 7 $ 3 6 Commercial real estate: Commercial mortgage 2 3 1 2 Construction — — — — Total commercial real estate loans 2 3 1 2 Total commercial loans 7 10 4 8 Real estate — residential mortgage 29 29 5 28 Home equity: Key Community Bank 37 37 15 36 Other 11 11 3 11 Total home equity loans 48 48 18 47 Consumer other — Key Community Bank 3 3 — 3 Credit cards 4 4 — 4 Consumer other: Marine 48 48 5 49 Other 1 1 — 1 Total consumer other 49 49 5 50 Total consumer loans 133 133 28 132 Total loans with an allowance recorded 140 143 32 140 Total $ 276 $ 301 $ 32 $ 290 (a) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on our consolidated balance sheet. (b) The Unpaid Principal Balance represents the customer’s legal obligation to us.
Breakdown of Nonperforming TDRs by Loans Category	A further breakdown of TDRs included in nonperforming loans by loan category as of June 30, 2015, follows: Pre-modification Post-modification Outstanding Outstanding June 30, 2015 Number Recorded Recorded dollars in millions of Loans Investment Investment LOAN TYPE Nonperforming: Commercial, financial and agricultural 12 $ 74 $ 58 Commercial real estate: Real estate — commercial mortgage 12 32 8 Total commercial real estate loans 12 32 8 Total commercial loans 24 106 66 Real estate — residential mortgage 352 21 21 Home equity: Key Community Bank 1,076 77 70 Other 117 3 3 Total home equity loans 1,193 80 73 Consumer other — Key Community Bank 28 1 1 Credit cards 289 2 2 Consumer other: Marine 104 8 7 Other 21 1 — Total consumer other 125 9 7 Total consumer loans 1,987 113 104 Total nonperforming TDRs 2,011 219 170 Prior-year accruing: (a) Commercial, financial and agricultural 14 6 3 Commercial real estate: Real estate — commercial mortgage 1 2 1 Total commercial real estate loans 1 2 1 Total commercial loans 15 8 4 Real estate — residential mortgage 491 36 36 Home equity: Key Community Bank 807 48 42 Other 331 10 8 Total home equity loans 1,138 58 50 Consumer other — Key Community Bank 48 2 2 Credit cards 489 3 2 Consumer other: Marine 419 60 34 Other 73 2 2 Total consumer other 492 62 36 Total consumer loans 2,658 161 126 Total prior-year accruing TDRs 2,673 169 130 Total TDRs 4,684 $ 388 $ 300 (a) All TDRs that were restructured prior to January 1, 2015, and are fully accruing. A further breakdown of TDRs included in nonperforming loans by loan category as of December 31, 2014, follows: December 31, 2014 dollars in millions Number Pre-modification Post-modification LOAN TYPE Nonperforming: Commercial, financial and agricultural 14 $ 25 $ 23 Commercial real estate: Real estate — commercial mortgage 10 38 13 Real estate — construction 1 5 — Total commercial real estate loans 11 43 13 Total commercial loans 25 68 36 Real estate — residential mortgage 453 27 27 Home equity: Key Community Bank 1,184 79 72 Other 158 4 4 Total home equity loans 1,342 83 76 Consumer other — Key Community Bank 37 2 1 Credit cards 290 2 2 Consumer other: Marine 206 17 14 Other 38 1 1 Total consumer other 244 18 15 Total consumer loans 2,366 132 121 Total nonperforming TDRs 2,391 200 157 Prior-year accruing: (a) Commercial, financial and agricultural 20 6 3 Commercial real estate: Real estate — commercial mortgage 1 2 1 Total commercial real estate loans 1 2 1 Total commercial loans 21 8 4 Real estate — residential mortgage 381 29 29 Home equity: Key Community Bank 674 41 36 Other 310 9 8 Total home equity loans 984 50 44 Consumer other — Key Community Bank 45 2 2 Credit cards 514 4 2 Consumer other: Marine 373 54 31 Other 67 2 1 Total consumer other 440 56 32 Total consumer loans 2,364 141 109 Total prior-year accruing TDRs 2,385 149 113 Total TDRs 4,776 $ 349 $ 270 (a) All TDRs that were restructured prior to January 1, 2014, and are fully accruing. A further breakdown of TDRs included in nonperforming loans by loan category as of June 30, 2014, follows: June 30, 2014 dollars in millions Number Pre-modification Post-modification LOAN TYPE Nonperforming: Commercial, financial and agricultural 24 $ 20 $ 10 Commercial real estate: Real estate — commercial mortgage 11 40 14 Real estate — construction 3 15 2 Total commercial real estate loans 14 55 16 Total commercial loans 38 75 26 Real estate — residential mortgage 521 34 34 Home equity: Key Community Bank 1,086 68 64 Other 126 4 3 Total home equity loans 1,212 72 67 Consumer other — Key Community Bank 33 1 1 Credit cards 60 — — Consumer other: Marine 207 15 13 Other 36 1 1 Total consumer other 243 16 14 Total consumer loans 2,069 123 116 Total nonperforming TDRs 2,107 198 142 Prior-year accruing: (a) Commercial, financial and agricultural 32 7 3 Commercial real estate: Real estate — commercial mortgage 4 17 9 Total commercial real estate loans 4 17 9 Total commercial loans 36 24 12 Real estate — residential mortgage 287 21 21 Home equity: Key Community Bank 759 43 39 Other 322 10 8 Total home equity loans 1,081 53 47 Consumer other — Key Community Bank 54 2 2 Credit cards 653 5 3 Consumer other: Marine 428 60 37 Other 73 2 2 Total consumer other 501 62 39 Total consumer loans 2,576 143 112 Total prior-year accruing TDRs 2,612 167 124 Total TDRs 4,719 $ 365 $ 266 (a) All TDRs that were restructured prior to January 1, 2014, and are fully accruing.
Post-Modification Outstanding Recorded Investment by Concession Type for Our Commercial Accruing and Nonaccruing TDRs	The following table shows the post-modification outstanding recorded investment by concession type for our commercial and consumer accruing and nonaccruing TDRs and other selected financial data. in millions June 30, December 31, June 30, Commercial loans: Interest rate reduction $ 60 $ 13 $ 27 Forgiveness of principal 2 2 5 Other 8 25 6 Total $ 70 $ 40 $ 38 Consumer loans: Interest rate reduction $ 142 $ 140 $ 139 Forgiveness of principal 4 4 4 Other 84 86 85 Total $ 230 $ 230 $ 228 Total commercial and consumer TDRs (a) $ 300 $ 270 $ 266 Total loans 58,264 57,381 55,600 (a) Commitments outstanding to lend additional funds to borrowers whose loan terms have been modified in TDRs are $8 million, $5 million, and $1 million at June 30, 2015, December 31, 2014, and June 30, 2014, respectively.
Past Due Loans Including Current Loans	The following aging analysis of past due and current loans as of June 30, 2015, December 31, 2014, and June 30, 2014, provides further information regarding Key’s credit exposure. June 30, 2015 in millions Current 30-59 60-89 90 and Nonperforming Total Past Due and Nonperforming Purchased Total LOAN TYPE Commercial, financial and agricultural $ 29,137 $ 26 $ 5 $ 17 $ 100 $ 148 — $ 29,285 Commercial real estate: Commercial mortgage 7,823 6 2 17 26 51 — 7,874 Construction 1,242 — — — 12 12 — 1,254 Total commercial real estate loans 9,065 6 2 17 38 63 — 9,128 Commercial lease financing 3,967 20 3 2 18 43 — 4,010 Total commercial loans $ 42,169 $ 52 $ 10 $ 36 $ 156 $ 254 — $ 42,423 Real estate — residential mortgage $ 2,155 $ 13 $ 3 $ 3 $ 67 $ 86 $ 11 $ 2,252 Home equity: Key Community Bank 10,043 43 22 11 176 252 1 10,296 Other 221 4 2 1 8 15 — 236 Total home equity loans 10,264 47 24 12 184 267 1 10,532 Consumer other — Key Community Bank 1,577 8 3 6 1 18 — 1,595 Credit cards 735 5 3 8 2 18 — 753 Consumer other: Marine 651 10 3 1 8 22 — 673 Other 35 — — — 1 1 — 36 Total consumer other 686 10 3 1 9 23 — 709 Total consumer loans $ 15,417 $ 83 $ 36 $ 30 $ 263 $ 412 $ 12 $ 15,841 Total loans $ 57,586 $ 135 $ 46 $ 66 $ 419 $ 666 $ 12 $ 58,264 December 31, 2014 in millions Current 30-59 60-89 90 and Nonperforming Total Past Due and Purchased Total LOAN TYPE Commercial, financial and agricultural $ 27,858 $ 19 $ 14 $ 32 $ 59 $ 124 — $ 27,982 Commercial real estate: Commercial mortgage 7,981 6 10 16 34 66 — 8,047 Construction 1,084 2 — 1 13 16 — 1,100 Total commercial real estate loans 9,065 8 10 17 47 82 — 9,147 Commercial lease financing 4,172 30 21 11 18 80 — 4,252 Total commercial loans $ 41,095 $ 57 $ 45 $ 60 $ 124 $ 286 — $ 41,381 Real estate — residential mortgage $ 2,111 $ 12 $ 7 $ 4 $ 79 $ 102 $ 12 $ 2,225 Home equity: Key Community Bank 10,098 46 22 14 185 267 1 10,366 Other 249 5 2 1 10 18 — 267 Total home equity loans 10,347 51 24 15 195 285 1 10,633 Consumer other — Key Community Bank 1,541 9 3 5 2 19 — 1,560 Credit cards 733 6 4 9 2 21 — 754 Consumer other: Marine 746 11 5 2 15 33 — 779 Other 46 1 — 1 1 3 — 49 Total consumer other 792 12 5 3 16 36 — 828 Total consumer loans $ 15,524 $ 90 $ 43 $ 36 $ 294 $ 463 $ 13 $ 16,000 Total loans $ 56,619 $ 147 $ 88 $ 96 $ 418 $ 749 $ 13 $ 57,381 June 30, 2014 in millions Current 30-59 60-89 90 and Nonperforming Total Past Due and Purchased Total LOAN TYPE Commercial, financial and agricultural $ 26,212 $ 52 $ 11 $ 15 $ 37 $ 115 — $ 26,327 Commercial real estate: Commercial mortgage 7,855 18 15 19 38 90 $ 1 7,946 Construction 1,029 2 2 5 9 18 — 1,047 Total commercial real estate loans 8,884 20 17 24 47 108 1 8,993 Commercial lease financing 4,186 32 4 4 15 55 — 4,241 Total commercial loans $ 39,282 $ 104 $ 32 $ 43 $ 99 $ 278 $ 1 $ 39,561 Real estate — residential mortgage $ 2,061 $ 16 $ 6 $ 4 $ 89 $ 115 $ 13 $ 2,189 Home equity: Key Community Bank 10,115 46 22 17 178 263 1 10,379 Other 281 5 2 1 11 19 — 300 Total home equity loans 10,396 51 24 18 189 282 1 10,679 Consumer other — Key Community Bank 1,493 9 4 6 2 21 — 1,514 Credit cards 698 6 4 9 1 20 — 718 Consumer other: Marine 855 13 3 2 15 33 — 888 Other 47 1 1 1 1 4 — 51 Total consumer other 902 14 4 3 16 37 — 939 Total consumer loans $ 15,550 $ 96 $ 42 $ 40 $ 297 $ 475 $ 14 $ 16,039 Total loans $ 54,832 $ 200 $ 74 $ 83 $ 396 $ 753 $ 15 $ 55,600
Financing Receivable Credit Quality Indicators	Commercial Credit Exposure Credit Risk Profile by Creditworthiness Category (a) June 30, in millions Commercial, financial RE —Commercial RE —Construction Commercial Lease Total RATING (b), (c) 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 AAA — AA $ 396 $ 364 $ 3 $ 3 $ 1 $ 1 $ 504 $ 712 $ 904 $ 1,080 A 1,189 1,091 4 1 — 1 484 382 1,677 1,475 BBB — BB 25,931 23,534 7,318 7,412 1,084 907 2,853 2,968 37,186 34,821 B 653 545 278 287 138 99 103 99 1,172 1,030 CCC — C 1,116 793 271 242 31 39 66 80 1,484 1,154 Total $ 29,285 $ 26,327 $ 7,874 $ 7,945 $ 1,254 $ 1,047 $ 4,010 $ 4,241 $ 42,423 $ 39,560 (a) Credit quality indicators are updated on an ongoing basis and reflect credit quality information as of the dates indicated. (b) Our bond rating to internal loan grade conversion system is as follows: AAA - AA = 1, A = 2, BBB - BB = 3 - 13, B = 14 - 16, and CCC - C = 17 - 20. (c) Our internal loan grade to regulatory-defined classification is as follows: Pass = 1-16, Special Mention = 17, Substandard = 18, Doubtful = 19, and Loss = 20. Consumer Credit Exposure Credit Risk Profile by Regulatory Classifications (a), (b) June 30, in millions Residential — Prime GRADE 2015 2014 Pass $ 12,506 $ 12,554 Substandard 266 300 Total $ 12,772 $ 12,854 Credit Risk Profile Based on Payment Activity (a) June 30, in millions Consumer — Key Credit cards Consumer —Marine Consumer — Other Total 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 Performing $ 1,594 $ 1,512 $ 751 $ 717 $ 665 $ 873 $ 35 $ 50 $ 3,045 $ 3,152 Nonperforming 1 2 2 1 8 15 1 1 12 19 Total $ 1,595 $ 1,514 $ 753 $ 718 $ 673 $ 888 $ 36 $ 51 $ 3,057 $ 3,171 (a) Credit quality indicators are updated on an ongoing basis and reflect credit quality information as of the dates indicated. (b) Our past due payment activity to regulatory classification conversion is as follows: pass = less than 90 days; and substandard = 90 days and greater plus nonperforming loans.
Summary of Allowance for Loan and Lease Losses	A summary of the changes in the ALLL for the periods indicated is presented in the table below: Three months Six months in millions 2015 2014 2015 2014 Balance at beginning of period — continuing operations $ 794 $ 834 $ 794 $ 848 Charge-offs (52 ) (56 ) (99 ) (113 ) Recoveries 16 26 35 63 Net loans and leases charged off (36 ) (30 ) (64 ) (50 ) Provision for loan and lease losses from continuing operations 37 10 66 16 Foreign currency translation adjustment 1 — — — Balance at end of period — continuing operations $ 796 $ 814 $ 796 $ 814
Changes in Allowance for Loan and Lease Losses by Loan Category	The changes in the ALLL by loan category for the periods indicated are as follows: in millions December 31, Provision Charge-offs Recoveries June 30, Commercial, financial and agricultural $ 391 $ 49 $ (33 ) $ 11 $ 418 Real estate — commercial mortgage 148 (4 ) (2 ) 2 144 Real estate — construction 28 3 (1 ) 1 31 Commercial lease financing 56 (5 ) (3 ) 5 53 Total commercial loans 623 43 (39 ) 19 646 Real estate — residential mortgage 23 (1 ) (3 ) 1 20 Home equity: Key Community Bank 66 3 (15 ) 3 57 Other 5 — (3 ) 2 4 Total home equity loans 71 3 (18 ) 5 61 Consumer other — Key Community Bank 22 7 (12 ) 4 21 Credit cards 33 13 (16 ) 1 31 Consumer other: Marine 21 — (10 ) 5 16 Other 1 1 (1 ) — 1 Total consumer other: 22 1 (11 ) 5 17 Total consumer loans 171 23 (60 ) 16 150 Total ALLL — continuing operations 794 66 (a) (99 ) 35 796 Discontinued operations 29 1 (16 ) 8 22 Total ALLL — including discontinued operations $ 823 $ 67 $ (115 ) $ 43 $ 818 (a) Excludes provision for losses on lending-related commitments of $10 million. in millions December 31, Provision Charge-offs Recoveries June 30, Commercial, financial and agricultural $ 362 $ 13 $ (23 ) $ 21 $ 373 Real estate — commercial mortgage 165 (5 ) (3 ) 2 159 Real estate — construction 32 (11 ) (2 ) 15 34 Commercial lease financing 62 (3 ) (5 ) 6 60 Total commercial loans 621 (6 ) (33 ) 44 626 Real estate — residential mortgage 37 (9 ) (5 ) 2 25 Home equity: Key Community Bank 84 9 (20 ) 4 77 Other 11 1 (6 ) 3 9 Total home equity loans 95 10 (26 ) 7 86 Consumer other — Key Community Bank 29 8 (16 ) 3 24 Credit cards 34 13 (18 ) 1 30 Consumer other: Marine 29 1 (14 ) 5 21 Other 3 (1 ) (1 ) 1 2 Total consumer other: 32 — (15 ) 6 23 Total consumer loans 227 22 (80 ) 19 188 Total ALLL — continuing operations 848 16 (a) (113 ) 63 814 Discontinued operations 39 9 (24 ) 8 32 Total ALLL — including discontinued operations $ 887 $ 25 $ (137 ) $ 71 $ 846 (a) Excludes provision for losses on lending-related commitments.
Allowance for Loan and Lease Losses and Corresponding Loan Balances	A breakdown of the individual and collective ALLL and the corresponding loan balances as of June 30, 2015, follows: Allowance Outstanding Individually Collectively Purchased Individually Collectively Purchased June 30, 2015 in millions Evaluated for Evaluated for Credit Evaluated for Evaluated for Credit Impairment Impairment Impaired Loans Impairment Impairment Impaired Commercial, financial and agricultural $ 24 $ 394 — $ 29,285 $ 82 $ 29,203 — Commercial real estate: Commercial mortgage 1 143 — 7,874 16 7,858 — Construction — 31 — 1,254 7 1,247 — Total commercial real estate loans 1 174 — 9,128 23 9,105 — Commercial lease financing — 53 — 4,010 — 4,010 — Total commercial loans 25 621 — 42,423 105 42,318 — Real estate — residential mortgage 5 14 $ 1 2,252 56 2,185 $ 11 Home equity: Key Community Bank 17 40 — 10,296 112 10,183 1 Other 2 2 — 236 12 224 — Total home equity loans 19 42 — 10,532 124 10,407 1 Consumer other — Key Community Bank — 21 — 1,595 3 1,592 — Credit cards — 31 — 753 3 750 — Consumer other: Marine 3 13 — 673 41 632 — Other — 1 — 36 2 34 — Total consumer other 3 14 — 709 43 666 — Total consumer loans 27 122 1 15,841 229 15,600 12 Total ALLL — continuing operations 52 743 1 58,264 334 57,918 12 Discontinued operations 1 21 — 1,962 19 1,943 — Total ALLL — including discontinued operations $ 53 $ 764 $ 1 $ 60,226 $ 353 $ 59,861 $ 12 A breakdown of the individual and collective ALLL and the corresponding loan balances as of December 31, 2014, follows: Allowance Outstanding Individually Collectively Purchased Individually Collectively Purchased December 31, 2014 in millions Evaluated for Evaluated for Credit Evaluated for Evaluated for Credit Impairment Impairment Impaired Loans Impairment Impairment Impaired Commercial, financial and agricultural $ 9 $ 382 — $ 27,982 $ 43 $ 27,939 — Commercial real estate: Commercial mortgage 2 146 — 8,047 21 8,025 $ 1 Construction 1 27 — 1,100 8 1,092 — Total commercial real estate loans 3 173 — 9,147 29 9,117 1 Commercial lease financing — 56 — 4,252 — 4,252 — Total commercial loans 12 611 — 41,381 72 41,308 1 Real estate — residential mortgage 5 17 $ 1 2,225 55 2,159 11 Home equity: Key Community Bank 16 50 — 10,366 108 10,257 1 Other 2 3 — 267 12 255 — Total home equity loans 18 53 — 10,633 120 10,512 1 Consumer other — Key Community Bank — 22 — 1,560 4 1,556 — Credit cards — 33 — 754 4 750 — Consumer other: Marine 5 16 — 779 45 734 — Other — 1 — 49 2 47 — Total consumer other 5 17 — 828 47 781 — Total consumer loans 28 142 1 16,000 230 15,758 12 Total ALLL — continuing operations 40 753 1 57,381 302 57,066 13 Discontinued operations 1 28 — 2,295 (a) 17 2,278 (a) — Total ALLL — including discontinued operations $ 41 $ 781 $ 1 $ 59,676 $ 319 $ 59,344 $ 13 (a) Amount includes $191 million of loans carried at fair value that are excluded from ALLL consideration. A breakdown of the individual and collective ALLL and the corresponding loan balances as of June 30, 2014, follows: Allowance Outstanding Individually Collectively Purchased Individually Collectively Purchased June 30, 2014 in millions Evaluated for Evaluated for Credit Evaluated for Evaluated for Credit Impairment Impairment Impaired Loans Impairment Impairment Impaired Commercial, financial and agricultural $ 3 $ 370 — $ 26,327 $ 17 $ 26,310 — Commercial real estate: Commercial mortgage 1 158 — 7,946 25 7,920 $ 1 Construction — 34 — 1,047 6 1,041 — Total commercial real estate loans 1 192 — 8,993 31 8,961 1 Commercial lease financing — 60 — 4,241 — 4,241 — Total commercial loans 4 622 — 39,561 48 39,512 1 Real estate — residential mortgage 5 19 $ 1 2,189 55 2,121 13 Home equity: Key Community Bank 15 62 — 10,379 103 10,275 1 Other 3 6 — 300 12 288 — Total home equity loans 18 68 — 10,679 115 10,563 1 Consumer other — Key Community Bank — 24 — 1,514 3 1,511 — Credit cards — 30 — 718 4 714 — Consumer other: Marine 5 16 — 888 50 838 — Other — 2 — 51 1 50 — Total consumer other 5 18 — 939 51 888 — Total consumer loans 28 159 1 16,039 228 15,797 14 Total ALLL — continuing operations 32 781 1 55,600 276 55,309 15 Discontinued operations 2 30 — 4,162 (a) 17 4,145 (a) — Total ALLL — including discontinued operations $ 34 $ 811 $ 1 $ 59,762 $ 293 $ 59,454 $ 15 (a) Amount includes $1.9 billion of loans carried at fair value that are excluded from ALLL consideration.
Changes in Liability for Credit Losses on Lending Related Commitments	Changes in the liability for credit losses on unfunded lending-related commitments are summarized as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Balance at beginning of period $ 41 $ 35 $ 35 $ 37 Provision (credit) for losses on lending-related commitments 4 2 10 — Balance at end of period $ 45 $ 37 $ 45 $ 37

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value of Assets and Liabilities Measured on Recurring Basis	ertain assets and liabilities are measured at fair value on a recurring basis in accordance with GAAP. The following tables present these assets and liabilities at June 30, 2015, December 31, 2014, and June 30, 2014. June 30, 2015 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations — $ 580 — $ 580 States and political subdivisions — 23 — 23 Collateralized mortgage obligations — — — — Other mortgage-backed securities — 37 — 37 Other securities $ 2 24 — 26 Total trading account securities 2 664 — 666 Commercial loans — 8 — 8 Total trading account assets 2 672 — 674 Securities available for sale: States and political subdivisions — 19 — 19 Collateralized mortgage obligations — 11,751 — 11,751 Other mortgage-backed securities — 2,452 — 2,452 Other securities 12 — $ 10 22 Total securities available for sale 12 14,222 10 14,244 Other investments: Principal investments: Direct — — 70 70 Indirect — — 282 282 Total principal investments — — 352 352 Equity and mezzanine investments: Direct — — — — Indirect — — 9 9 Total equity and mezzanine investments — — 9 9 Total other investments — — 361 361 Derivative assets: Interest rate — 840 16 856 Foreign exchange 121 10 — 131 Commodity — 379 — 379 Credit — 1 3 4 Derivative assets 121 1,230 19 1,370 Netting adjustments (a) — — — (834 ) Total derivative assets 121 1,230 19 536 Accrued income and other assets — 2 — 2 Total assets on a recurring basis at fair value $ 135 $ 16,126 $ 390 $ 15,817 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions $ 1 $ 527 — $ 528 Derivative liabilities: Interest rate — 568 — 568 Foreign exchange 100 8 — 108 Commodity — 365 — 365 Credit — 5 — 5 Derivative liabilities 100 946 — 1,046 Netting adjustments (a) — — — (486 ) Total derivative liabilities 100 946 — 560 Accrued expense and other liabilities — 2 — 2 Total liabilities on a recurring basis at fair value $ 101 $ 1,475 — $ 1,090 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. December 31, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations — $ 555 — $ 555 States and political subdivisions — 38 — 38 Collateralized mortgage obligations — — — — Other mortgage-backed securities — 124 — 124 Other securities $ 2 29 — 31 Total trading account securities 2 746 — 748 Commercial loans — 2 — 2 Total trading account assets 2 748 — 750 Securities available for sale: States and political subdivisions — 23 — 23 Collateralized mortgage obligations — 11,270 — 11,270 Other mortgage-backed securities — 2,035 — 2,035 Other securities 22 — $ 10 32 Total securities available for sale 22 13,328 10 13,360 Other investments: Principal investments: Direct 2 — 102 104 Indirect — — 302 302 Total principal investments 2 — 404 406 Equity and mezzanine investments: Direct — — — — Indirect — — 10 10 Total equity and mezzanine investments — — 10 10 Total other investments 2 — 414 416 Derivative assets: Interest rate — 924 13 937 Foreign exchange 91 2 — 93 Commodity — 608 — 608 Credit — 2 3 5 Derivative assets 91 1,536 16 1,643 Netting adjustments (a) — — — (1,034 ) Total derivative assets 91 1,536 16 609 Accrued income and other assets — — — — Total assets on a recurring basis at fair value $ 117 $ 15,612 $ 440 $ 15,135 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions — $ 423 — $ 423 Derivative liabilities: Interest rate — 644 — 644 Foreign exchange $ 77 4 — 81 Commodity — 594 — 594 Credit — 6 $ 1 7 Derivative liabilities 77 1,248 1 1,326 Netting adjustments (a) — — — (542 ) Total derivative liabilities 77 1,248 1 784 Accrued expense and other liabilities — — — — Total liabilities on a recurring basis at fair value $ 77 $ 1,671 $ 1 $ 1,207 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. June 30, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations — $ 660 — $ 660 States and political subdivisions — 33 — 33 Collateralized mortgage obligations — 19 — 19 Other mortgage-backed securities — 144 — 144 Other securities $ 5 26 — 31 Total trading account securities 5 882 — 887 Commercial loans — 3 — 3 Total trading account assets 5 885 — 890 Securities available for sale: States and political subdivisions — 31 — 31 Collateralized mortgage obligations — 9,866 — 9,866 Other mortgage-backed securities — 2,305 — 2,305 Other securities 22 — — 22 Total securities available for sale 22 12,202 — 12,224 Other investments: Principal investments: Direct — — $ 146 146 Indirect — — 399 399 Total principal investments — — 545 545 Equity and mezzanine investments: Direct — — — — Indirect — — 16 16 Total equity and mezzanine investments — — 16 16 Total other investments — — 561 561 Derivative assets: Interest rate — 964 20 984 Foreign exchange 51 5 — 56 Commodity — 181 1 182 Credit — — 4 4 Derivative assets 51 1,150 25 1,226 Netting adjustments (a) — — — (677 ) Total derivative assets 51 1,150 25 549 Accrued income and other assets — 4 — 4 Total assets on a recurring basis at fair value $ 78 $ 14,241 $ 586 $ 14,228 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions $ 1 $ 520 — $ 521 Derivative liabilities: Interest rate — 653 — 653 Foreign exchange 52 4 — 56 Commodity — 177 — 177 Credit — 7 $ 1 8 Derivative liabilities 52 841 1 894 Netting adjustments (a) — — — (443 ) Total derivative liabilities 52 841 1 451 Accrued expense and other liabilities — 4 — 4 Total liabilities on a recurring basis at fair value $ 53 $ 1,365 $ 1 $ 976 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments.
Change in Fair Values of Level 3 Financial Instruments	Changes in Level 3 Fair Value Measurements The following table shows the change in the fair values of our Level 3 financial instruments for the three and six months ended June 30, 2015, and June 30, 2014. We mitigate the credit risk, interest rate risk, and risk of loss related to many of these Level 3 instruments by using securities and derivative positions classified as Level 1 or Level 2. Level 1 and Level 2 instruments are not included in the following table. Therefore, the gains or losses shown do not include the impact of our risk management activities. Unrealized Gains Gains Beginning (Losses) Transfers Transfers End of (Losses) of Period Included in into out of Period Included in in millions Balance Earnings Purchases Sales Settlements Level 3 (d) Level 3 (d) Balance (f) Earnings Six months ended June 30, 2015 Securities available for sale Other securities $ 10 — — — — — — $ 10 — Other investments Principal investments Direct 102 $ 16 (b) $ 2 $ (50 ) — — — 70 $ (3 ) (b) Indirect 302 25 (b) 4 (49 ) — — — 282 (15 ) (b) Equity and mezzanine investments Direct — 2 (b) — (2 ) — — — — 2 (b) Indirect 10 6 (b) — (7 ) — — — 9 6 (b) Derivative instruments (a) Interest rate 13 (1 ) (c) 1 — — $ 8 (e) $ (5 ) (e) 16 — Commodity — — — — — — — — — Credit 2 (4 ) (c) — — $ 5 — — 3 — Three months ended June 30, 2015 Securities available for sale Other securities $ 10 — — — — — — $ 10 — Other investments Principal investments Direct 73 $ 3 (b) $ 1 $ (7 ) — — — 70 $ (3 ) (b) Indirect 301 8 (b) 3 (30 ) — — — 282 (7 ) (b) Equity and mezzanine investments Direct — — — — — — — — — Indirect 9 7 (b) — (7 ) — — — 9 7 (b) Derivative instruments (a) Interest rate 10 (3 ) (c) 1 — — $ 8 (e) — 16 — Commodity — — — — — — — — — Credit 2 (1 ) (c) — — $ 2 — — 3 — Unrealized Gains Gains Beginning (Losses) Transfers Transfers End of (Losses) of Period Included in into out of Period Included in in millions Balance Earnings Purchases Sales Settlements Level 3 (d) Level 3 (d) Balance (f) Earnings Six months ended June 30, 2014 Other investments Principal investments Direct $ 141 $ 11 (b) $ 1 $ (7 ) — — — $ 146 $ 20 (b) Indirect 413 40 (b) 5 (59 ) — — — 399 12 (b) Equity and mezzanine investments Direct — — — — — — — — — Indirect 23 (1 ) (b) — — $ (6 ) — — 16 (1 ) (b) Derivative instruments (a) Interest rate 25 2 (c) 3 (2 ) — $ 5 (e) $ (13 ) (e) 20 — Commodity — — — — — 1 (e) — 1 — Credit 3 (5 ) (c) — — 5 — — 3 — Three months ended June 30, 2014 Other investments Principal investments Direct $ 141 $ 7 (b) $ 1 $ (3 ) — — — $ 146 $ 14 (b) Indirect 403 20 (b) 4 (28 ) — — — 399 3 (b) Equity and mezzanine investments Direct — — — — — — — — — Indirect 20 — — — $ (4 ) — — 16 — Derivative instruments (a) Interest rate 22 1 (c) 1 (1 ) — $ 2 (e) $ (5 ) (e) 20 — Commodity — — — — — 1 (e) — 1 — Credit 3 (3 ) (c) — — 3 — — 3 — (a) Amounts represent Level 3 derivative assets less Level 3 derivative liabilities. (b) Realized and unrealized gains and losses on principal investments are reported in “net gains (losses) from principal investing” on the income statement. Realized and unrealized losses on private equity and mezzanine investments are reported in “other income” on the income statement. (c) Realized and unrealized gains and losses on derivative instruments are reported in “corporate services income” and “other income” on the income statement. (d) Our policy is to recognize transfers into and transfers out of Level 3 as of the end of the reporting period. (e) Certain derivatives previously classified as Level 2 were transferred to Level 3 because Level 3 unobservable inputs became significant. Certain derivatives previously classified as Level 3 were transferred to Level 2 because Level 3 unobservable inputs became less significant. (f) There were no issuances for the six-month periods ended June 30, 2015, and June 30, 2014.
Assets Measured at Fair Value on Nonrecurring Basis	Assets Measured at Fair Value on a Nonrecurring Basis Certain assets and liabilities are measured at fair value on a nonrecurring basis in accordance with GAAP. The adjustments to fair value generally result from the application of accounting guidance that requires assets and liabilities to be recorded at the lower of cost or fair value, or assessed for impairment. The following table presents our assets measured at fair value on a nonrecurring basis at June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A NONRECURRING BASIS Impaired loans — — $ 8 $ 8 Loans held for sale (a) — — — — Accrued income and other assets — — 5 5 Total assets on a nonrecurring basis at fair value — — $ 13 $ 13 December 31, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A NONRECURRING BASIS Impaired loans — — $ 5 $ 5 Loans held for sale (a) — — — — Accrued income and other assets — — 7 7 Total assets on a nonrecurring basis at fair value — — $ 12 $ 12 June 30, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A NONRECURRING BASIS Impaired loans — — $ 6 $ 6 Loans held for sale (a) — — — — Accrued income and other assets — — 5 5 Total assets on a nonrecurring basis at fair value — — $ 11 $ 11 (a) During the first half of 2015, we transferred $7 million of commercial and consumer loans and leases at their current fair value from held-for-sale status to the held-to-maturity portfolio, compared to $11 million during 2014, and $10 million during the first half of 2014.
Quantitative Information about Level 3 Fair Value Measurements	Quantitative Information about Level 3 Fair Value Measurements The range and weighted-average of the significant unobservable inputs used to fair value our material Level 3 recurring and nonrecurring assets at June 30, 2015, December 31, 2014, and June 30, 2014, along with the valuation techniques used, are shown in the following table: June 30, 2015 Fair Value of Significant Range dollars in millions Level 3 Assets Valuation Technique Unobservable Input (Weighted-Average) Recurring Other investments — principal investments — direct: $ 70 Individual analysis of the condition of each investment Debt instruments EBITDA multiple 5.40 - 6.00 (5.50) Equity instruments of private companies EBITDA multiple (where applicable) 6.00 - 6.80 (6.70) Equity instruments of public companies Market approach Discount N/A (8.00) Nonrecurring Impaired loans 8 Fair value of underlying collateral Discount 00.00 - 64.00% (35.00%) Goodwill 1,057 Discounted cash flow and market data Earnings multiple of peers 11.40 - 15.90 (12.92) Equity multiple of peers 1.20 - 1.22 (1.21) Control premium 10.00 - 30.00% (19.70%) Weighted-average cost of capital 13.00 - 14.00% (13.52%) December 31, 2014 dollars in millions Fair Value of Significant Range Level 3 Assets Valuation Technique Unobservable Input (Weighted-Average) Recurring Other investments — principal investments — direct: $ 102 Individual analysis of the condition of each investment Debt instruments EBITDA multiple 5.40 - 6.00 (5.50) Equity instruments of private companies EBITDA multiple (where applicable) 5.50 - 6.20 (5.80) Revenue multiple (where applicable) 4.30 - 4.30 (4.30) Nonrecurring Impaired loans 5 Fair value of underlying collateral Discount 10.00 - 64.00% (62.00%) Goodwill 1,057 Discounted cash flow and market data Earnings multiple of peers 11.40 - 15.90 (12.92) Equity multiple of peers 1.20 - 1.22 (1.21) Control premium 10.00 - 30.00% (19.70%) Weighted-average cost of capital 13.00 - 14.00% (13.52%) June 30, 2014 dollars in millions Fair Value of Significant Range Level 3 Assets Valuation Technique Unobservable Input (Weighted-Average) Recurring Other investments — principal investments — direct: $ 146 Individual analysis of the condition of each investment Debt instruments EBITDA multiple 5.90 - 6.00 (6.00) Equity instruments of private companies EBITDA multiple (where applicable) 5.50 - 6.50 (5.90) Revenue multiple (where applicable) 0.50 - 4.10 (3.80) Nonrecurring Impaired loans 6 Fair value of underlying collateral Discount 0.00 - 70.00% (29.00%) Goodwill 979 Discounted cash flow and market data Earnings multiple of peers 10.10 - 14.40 (11.59) Equity multiple of peers 1.17 - 1.29 (1.24) Control premium N/A (35.00 %) Weighted-average cost of capital N/A (13.00%)
Fair Value Disclosures of Financial Instruments	Fair Value Disclosures of Financial Instruments The levels in the fair value hierarchy ascribed to our financial instruments and the related carrying amounts at June 30, 2015, December 31, 2014 and June 30, 2014, are shown in the following table. June 30, 2015 Fair Value in millions Carrying Level 1 Level 2 Level 3 Netting Total ASSETS Cash and short-term investments (a) $ 3,915 $ 3,915 — — — $ 3,915 Trading account assets (b) 674 2 $ 672 — — 674 Securities available for sale (b) 14,244 12 14,222 $ 10 — 14,244 Held-to-maturity securities (c) 5,022 — 4,992 — — 4,992 Other investments (b) 703 — 342 361 — 703 Loans, net of allowance (d) 57,468 — — 56,012 — 56,012 Loans held for sale (b) 835 — — 835 — 835 Derivative assets (b) 536 121 1,230 19 $ (834 ) (f) 536 LIABILITIES Deposits with no stated maturity (a) $ 65,034 — $ 65,034 — — $ 65,034 Time deposits (e) 5,635 $ 498 5,195 — — 5,693 Short-term borrowings (a) 972 1 971 — — 972 Long-term debt (e) 10,267 10,037 506 — — 10,543 Derivative liabilities (b) 560 100 946 — $ (486 ) (f) 560 December 31, 2014 Fair Value in millions Carrying Level 1 Level 2 Level 3 Netting Total ASSETS Cash and short-term investments (a) $ 4,922 $ 4,922 — — — $ 4,922 Trading account assets (b) 750 2 $ 748 — — 750 Securities available for sale (b) 13,360 22 13,328 $ 10 — 13,360 Held-to-maturity securities (c) 5,015 — 4,974 — — 4,974 Other investments (b) 760 2 344 414 — 760 Loans, net of allowance (d) 56,587 — — 54,993 — 54,993 Loans held for sale (b) 734 — — 734 — 734 Derivative assets (b) 609 91 1,536 16 $ (1,034 ) (f) 609 LIABILITIES Deposits with no stated maturity (a) $ 66,135 — $ 66,135 — — $ 66,135 Time deposits (e) 5,863 $ 564 5,361 — — 5,925 Short-term borrowings (a) 998 — 998 — — 998 Long-term debt (e) 7,875 7,625 626 — — 8,251 Derivative liabilities (b) 784 77 1,248 $ 1 $ (542 ) (f) 784 June 30, 2014 Fair Value in millions Carrying Level 1 Level 2 Level 3 Netting Total ASSETS Cash and short-term investments (a) $ 3,780 $ 3,780 — — — $ 3,780 Trading account assets (b) 890 5 $ 885 — — 890 Securities available for sale (b) 12,224 22 12,202 — — 12,224 Held-to-maturity securities (c) 5,233 — 5,154 — — 5,154 Other investments (b) 899 — 338 $ 561 — 899 Loans, net of allowance (d) 54,786 — — 53,702 — 53,702 Loans held for sale (b) 435 — — 435 — 435 Derivative assets (b) 549 51 1,150 25 $ (677 ) (f) 549 LIABILITIES Deposits with no stated maturity (a) $ 60,868 — $ 60,868 — — $ 60,868 Time deposits (e) 6,931 $ 682 6,322 — — 7,004 Short-term borrowings (a) 1,734 1 1,733 — — 1,734 Long-term debt (e) 8,213 7,687 962 — — 8,649 Derivative liabilities (b) 451 52 841 $ 1 $ (443 ) (f) 451 Valuation Methods and Assumptions (a) Fair value equals or approximates carrying amount. The fair value of deposits with no stated maturity does not take into consideration the value ascribed to core deposit intangibles. (b) Information pertaining to our methodology for measuring the fair values of these assets and liabilities is included in the sections entitled “Qualitative Disclosures of Valuation Techniques” and “Assets Measured at Fair Value on a Nonrecurring Basis” in this note. (c) Fair values of held-to-maturity securities are determined by using models that are based on security-specific details, as well as relevant industry and economic factors. The most significant of these inputs are quoted market prices, interest rate spreads on relevant benchmark securities, and certain prepayment assumptions. We review the valuations derived from the models to ensure they are reasonable and consistent with the values placed on similar securities traded in the secondary markets. (d) The fair value of loans is based on the present value of the expected cash flows. The projected cash flows are based on the contractual terms of the loans, adjusted for prepayments and use of a discount rate based on the relative risk of the cash flows, taking into account the loan type, maturity of the loan, liquidity risk, servicing costs, and a required return on debt and capital. In addition, an incremental liquidity discount is applied to certain loans, using historical sales of loans during periods of similar economic conditions as a benchmark. The fair value of loans includes lease financing receivables at their aggregate carrying amount, which is equivalent to their fair value. (e) Fair values of time deposits and long-term debt are based on discounted cash flows utilizing relevant market inputs. (f) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments.
Private Equity and Mezzanine Investments [Member]
Fair Value of Direct and Indirect Investments, Related Unfunded Commitments and Financial Support Provided	The following table presents the fair value of our indirect investments and related unfunded commitments at June 30, 2015. We did not provide any financial support to investees related to our direct and indirect investments for the six months ended June 30, 2015, and June 30, 2014. June 30, 2015 in millions Unfunded Fair Value Commitments INVESTMENT TYPE Indirect investments Passive funds (a) $ 9 $ 1 Total $ 9 $ 1 (a) We invest in passive funds, which are multi-investor private equity funds. These investments can never be redeemed. Instead, distributions are received through the liquidation of the underlying investments in the funds. Some funds have no restrictions on sale, while others require investors to remain in the fund until maturity. The funds will be liquidated over a period of one to four years. The purpose of KREEC’s funding is to allow funds to make additional investments and keep a certain market value threshold in the funds. KREEC is obligated to provide financial support, as all investors are required, to fund based on their ownership percentage, as noted in the Limited Partnership Agreements.
Principal Investments [Member]
Fair Value of Direct and Indirect Investments, Related Unfunded Commitments and Financial Support Provided	The following table presents the fair value of our direct and indirect principal investments and related unfunded commitments at June 30, 2015, as well as financial support provided for the three and six months ended June 30, 2015, and June 30, 2014: Financial support provided Three months ended June 30, Six months ended June 30, June 30, 2015 2015 2014 2015 2014 Fair Unfunded Funded Funded Funded Funded Funded Funded Funded Funded in millions Value Commitments Commitments Other Commitments Other Commitments Other Commitments Other INVESTMENT TYPE Direct investments (a) $ 70 — — — — $ 1 — $ 2 — $ 2 Indirect investments (b) 282 $ 54 $ 3 — $ 4 — $ 5 — $ 6 — Total $ 352 $ 54 $ 3 — $ 4 $ 1 $ 5 $ 2 $ 6 $ 2 (a) Our direct investments consist of equity and debt investments directly in independent business enterprises. Operations of the business enterprises are handled by management of the portfolio company. The purpose of funding these enterprises is to provide financial support for business development and acquisition strategies. We infuse equity capital based on an initial contractual cash contribution and later from additional requests on behalf of the companies’ management. (b) Our indirect investments consist of buyout funds, venture capital funds, and fund of funds. These investments are generally not redeemable. Instead, distributions are received through the liquidation of the underlying investments of the fund. An investment in any one of these funds typically can be sold only with the approval of the fund’s general partners. We estimate that the underlying investments of the funds will be liquidated over a period of one to nine years. The purpose of funding our capital commitments to these investments is to allow the funds to make additional follow-on investments and pay fund expenses until the fund dissolves. We, and all other investors in the fund, are obligated to fund the full amount of our respective capital commitments to the fund based on our and their respective ownership percentages, as noted in the applicable Limited Partnership Agreement.

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Details of Securities	The amortized cost, unrealized gains and losses, and approximate fair value of our securities available for sale and held-to-maturity securities are presented in the following tables. Gross unrealized gains and losses represent the difference between the amortized cost and the fair value of securities on the balance sheet as of the dates indicated. Accordingly, the amount of these gains and losses may change in the future as market conditions change. June 30, 2015 Gross Gross Amortized Unrealized Unrealized Fair in millions Cost Gains Losses Value SECURITIES AVAILABLE FOR SALE States and political subdivisions $ 19 — — $ 19 Collateralized mortgage obligations 11,765 $ 101 $ 115 11,751 Other mortgage-backed securities 2,439 21 8 2,452 Other securities 20 2 — 22 Total securities available for sale $ 14,243 $ 124 $ 123 $ 14,244 HELD-TO-MATURITY SECURITIES Collateralized mortgage obligations $ 4,463 $ 17 $ 43 $ 4,437 Other mortgage-backed securities 539 — 4 535 Other securities 20 — — 20 Total held-to-maturity securities $ 5,022 $ 17 $ 47 $ 4,992 December 31, 2014 Gross Gross Amortized Unrealized Unrealized Fair in millions Cost Gains Losses Value SECURITIES AVAILABLE FOR SALE States and political subdivisions $ 22 $ 1 — $ 23 Collateralized mortgage obligations 11,310 96 $ 136 11,270 Other mortgage-backed securities 2,004 32 1 2,035 Other securities 29 3 — 32 Total securities available for sale $ 13,365 $ 132 $ 137 $ 13,360 HELD-TO-MATURITY SECURITIES Collateralized mortgage obligations $ 4,755 $ 15 $ 57 $ 4,713 Other mortgage-backed securities 240 1 — 241 Other securities 20 — — 20 Total held-to-maturity securities $ 5,015 $ 16 $ 57 $ 4,974 June 30, 2014 Gross Gross Amortized Unrealized Unrealized Fair in millions Cost Gains Losses Value SECURITIES AVAILABLE FOR SALE States and political subdivisions $ 30 $ 1 — $ 31 Collateralized mortgage obligations 9,912 135 $ 181 9,866 Other mortgage-backed securities 2,273 33 1 2,305 Other securities 18 4 — 22 Total securities available for sale $ 12,233 $ 173 $ 182 $ 12,224 HELD-TO-MATURITY SECURITIES Collateralized mortgage obligations $ 5,213 $ 12 $ 91 $ 5,134 Other securities 20 — — 20 Total held-to-maturity securities $ 5,233 $ 12 $ 91 $ 5,154
Available for Sale Securities (Unrealized Loss Position)	The following table summarizes our securities that were in an unrealized loss position as of June 30, 2015, December 31, 2014, and June 30, 2014. Duration of Unrealized Loss Position Less than 12 Months 12 Months or Longer Total Gross Gross Gross Unrealized Unrealized Unrealized in millions Fair Value Losses Fair Value Losses Fair Value Losses June 30, 2015 Securities available for sale: Collateralized mortgage obligations $ 2,784 $ 46 $ 2,624 $ 69 $ 5,408 $ 115 Other mortgage-backed securities 1,060 8 — — 1,060 8 Other securities (a) — — 3 — 3 — Held-to-maturity: Collateralized mortgage obligations 1,236 12 1,278 31 2,514 43 Other mortgage-backed securities 475 4 — — 475 4 Other securities (b) 4 — — — 4 — Total temporarily impaired securities $ 5,559 $ 70 $ 3,905 $ 100 $ 9,464 $ 170 December 31, 2014 Securities available for sale: Collateralized mortgage obligations $ 3,019 $ 52 $ 2,932 $ 84 $ 5,951 $ 136 Other mortgage-backed securities — — 78 1 78 1 Other securities (a) 4 — 2 — 6 — Held-to-maturity: Collateralized mortgage obligations 1,005 11 1,994 46 2,999 57 Total temporarily impaired securities $ 4,028 $ 63 $ 5,006 $ 131 $ 9,034 $ 194 June 30, 2014 Securities available for sale: Collateralized mortgage obligations $ 268 $ 1 $ 4,653 $ 180 $ 4,921 $ 181 Other mortgage-backed securities — — 85 1 85 1 Other securities (a) 1 — 2 — 3 — Held-to-maturity: Collateralized mortgage obligations 811 9 2,351 82 3,162 91 Total temporarily impaired securities $ 1,080 $ 10 $ 7,091 $ 263 $ 8,171 $ 273 (a) Gross unrealized losses totaled less than $1 million for other securities available for sale as of June 30, 2015, December 31, 2014 and June 30, 2014. (b) Gross unrealized losses totaled less than $1 million for other securities held-to-maturity as of June 30, 2015.
Cumulative Credit Portion of Impairments on Debt Securities	As shown in the following table, we did not have any impairment losses recognized in earnings for the three months ended June 30, 2015. Three months ended June 30, 2015 in millions Balance at March 31, 2015 $ 4 Impairment recognized in earnings — Balance at June 30, 2015 $ 4
Available for Sale Securities Realized Gains and Losses	Realized gains and losses related to securities available for sale were as follows: Six months ended June 30, 2015 in millions Realized gains — Realized losses $ 1 Net securities gains (losses) $ (1 )
Securities by Maturity	Actual maturities may differ from expected or contractual maturities since borrowers have the right to prepay obligations with or without prepayment penalties. Securities Available for Sale Held-to-Maturity Securities June 30, 2015 in millions Amortized Fair Amortized Fair Due in one year or less $ 257 $ 260 $ 7 $ 7 Due after one through five years 12,710 12,716 4,476 4,450 Due after five through ten years 1,273 1,265 539 535 Due after ten years 3 3 — — Total $ 14,243 $ 14,244 $ 5,022 $ 4,992

Derivatives and Hedging Activ35

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Values, Volume of Activity and Gain (Loss) Information Related to Derivative Instruments	Our derivative instruments are included in “derivative assets” or “derivative liabilities” on the balance sheet, as indicated in the following table: June 30, 2015 December 31, 2014 June 30, 2014 Fair Value Fair Value Fair Value in millions Notional Derivative Derivative Notional Derivative Derivative Notional Derivative Derivative Derivatives designated as hedging instruments: Interest rate $ 17,324 $ 267 $ 22 $ 15,095 $ 272 $ 26 $ 14,459 $ 307 $ 17 Foreign exchange 333 17 4 371 8 — 425 4 8 Total 17,657 284 26 15,466 280 26 14,884 311 25 Derivatives not designated as hedging instruments: Interest rate 45,067 589 546 43,771 665 618 44,041 677 636 Foreign exchange 6,486 114 104 4,024 85 81 6,338 52 48 Commodity 1,537 379 365 1,544 608 594 1,854 182 177 Credit 505 4 5 512 5 7 653 4 8 Total 53,595 1,086 1,020 49,851 1,363 1,300 52,886 915 869 Netting adjustments (a) — (834 ) (486 ) — (1,034 ) (542 ) — (677 ) (443 ) Net derivatives in the balance sheet 71,252 536 560 65,317 609 784 67,770 549 451 Other collateral (b) — (96 ) (216 ) — (155 ) (241 ) — (65 ) (380 ) Net derivative amounts $ 71,252 $ 440 $ 344 $ 65,317 $ 454 $ 543 $ 67,770 $ 484 $ 71 (a) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. (b) Other collateral represents the amount that cannot be used to offset our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The other collateral consists of securities and is exchanged under bilateral collateral and master netting agreements that allow us to offset the net derivative position with the related collateral. The application of the other collateral cannot reduce the net derivative position below zero. Therefore, excess other collateral, if any, is not reflected above.
Pre-Tax Net Gains (Losses) on Fair Value Hedges	The following table summarizes the pre-tax net gains (losses) on our fair value hedges for the six-month periods ended June 30, 2015, and June 30, 2014, and where they are recorded on the income statement. Six months ended June 30, 2015 in millions Income Statement Location of Net Gains (Losses) on Derivative Net Gains Hedged Item Income Statement Location of Net Gains Interest rate Other income $ (17 ) Long-term debt Other income $ 17 (a) Interest rate Interest expense – Long-term debt 60 Total $ 43 $ 17 Six months ended June 30, 2014 in millions Income Statement Location of Net Gains (Losses) on Derivative Net Gains Hedged Item Income Statement Location of Net Gains (Losses) on Hedged Item Net Gains Interest rate Other income $ 13 Long-term debt Other income $ (13 ) (a) Interest rate Interest expense – Long-term debt 66 Total $ 79 (13 ) (a) Net gains (losses) on hedged items represent the change in fair value caused by fluctuations in interest rates.
Derivative Instrument Cash Flow Hedge Earning Recognized by Income Statement Location	The following table summarizes the pre-tax net gains (losses) on our cash flow and net investment hedges for the six-month periods ended June 30, 2015, and June 30, 2014, and where they are recorded on the income statement. The table includes the effective portion of net gains (losses) recognized in OCI during the period, the effective portion of net gains (losses) reclassified from OCI into income during the current period, and the portion of net gains (losses) recognized directly in income, representing the amount of hedge ineffectiveness. Six months ended June 30, 2015 in millions Net Gains (Losses) Income Statement Location of Net Gains (Losses) Net Gains (Losses) Reclassified Into Income Income Statement Location of Net Income Net Gains Recognized Cash Flow Hedges Interest rate $ 48 Interest income – Loans $ 45 Other income — Interest rate 1 Interest expense – Long-term debt (2 ) Other income — Interest rate 1 Investment banking and debt placement fees — Other income — Net Investment Hedges Foreign exchange contracts 17 Other Income — Other income — Total $ 67 $ 43 — Six months ended June 30, 2014 in millions Net Gains (Losses) Income Statement Location of Net Gains (Losses) Net Gains (Losses) From OCI Into Income Income Statement Income Net Gains Cash Flow Hedges Interest rate $ 40 Interest income – Loans $ 31 Other income — Interest rate (4 ) Interest expense – Long-term debt (2 ) Other income — Interest rate — Investment banking and debt placement fees — Other income — Net Investment Hedges Foreign exchange contracts (1 ) Other Income (1 ) Other income — Total $ 35 $ 28 —
After-Tax Change in AOCI Resulting from Cash Flow Hedges	The after-tax change in AOCI resulting from cash flow and net investment hedges is as follows: in millions December 31, 2015 Reclassification June 30, AOCI resulting from cash flow and net investment hedges $ (8 ) $ 42 $ (27 ) $ 7
Pre-Tax Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments	The following table summarizes the pre-tax net gains (losses) on our derivatives that are not designated as hedging instruments for the six-month periods ended June 30, 2015, and June 30, 2014, and where they are recorded on the income statement. Six months ended June 30, 2015 Six months ended June 30, 2014 in millions Corporate Income Other Income Total Corporate Income Other Income Total NET GAINS (LOSSES) Interest rate $ 9 — $ 9 $ 9 — $ 9 Foreign exchange 18 — 18 17 — 17 Commodity 3 — 3 2 — 2 Credit — $ (7 ) (7 ) — $ (8 ) (8 ) Total net gains (losses) $ 30 $ (7 ) $ 23 $ 28 $ (8 ) $ 20
Largest Exposure to Individual Counterparty	The following table summarizes our largest exposure to an individual counterparty at the dates indicated. in millions June 30, December 31, June 30, Largest gross exposure (derivative asset) to an individual counterparty $ 105 $ 133 $ 117 Collateral posted by this counterparty 44 100 47 Derivative liability with this counterparty 90 31 108 Collateral pledged to this counterparty 37 — 44 Net exposure after netting adjustments and collateral 8 2 6
Fair Value of Derivative Assets by Type	The following table summarizes the fair value of our derivative assets by type at the dates indicated. These assets represent our gross exposure to potential loss after taking into account the effects of bilateral collateral and master netting agreements and other means used to mitigate risk. in millions June 30, December 31, June 30, Interest rate $ 606 $ 607 $ 657 Foreign exchange 50 41 29 Commodity 243 478 152 Credit 1 1 — Derivative assets before collateral 900 1,127 838 Less: Related collateral 364 518 289 Total derivative assets $ 536 $ 609 $ 549
Fair Value of Credit Derivatives Purchased and Sold	The following table summarizes the fair value of our credit derivatives purchased and sold by type as of June 30, 2015, December 31, 2014, and June 30, 2014. The fair value of credit derivatives presented below does not take into account the effects of bilateral collateral or master netting agreements. June 30, 2015 December 31, 2014 June 30, 2014 in millions Purchased Sold Net Purchased Sold Net Purchased Sold Net Single-name credit default swaps $ (2 ) — $ (2 ) $ (3 ) — $ (3 ) $ (3 ) — $ (3 ) Traded credit default swap indices 2 — 2 1 — 1 (1 ) — (1 ) Other — $ (1 ) (1 ) — — — — — — Total credit derivatives — $ (1 ) $ (1 ) $ (2 ) — $ (2 ) $ (4 ) — $ (4 )
Credit Derivatives Sold and Held	The following table provides information on the types of credit derivatives sold by us and held on the balance sheet at June 30, 2015, December 31, 2014, and June 30, 2014. The notional amount represents the maximum amount that the seller could be required to pay. The payment/performance risk assessment is based on the default probabilities for the underlying reference entities’ debt obligations using a Moody’s credit ratings matrix known as Moody’s “Idealized” Cumulative Default Rates. The payment/performance risk shown in the table represents a weighted-average of the default probabilities for all reference entities in the respective portfolios. These default probabilities are directly correlated to the probability that we will have to make a payment under the credit derivative contracts. June 30, 2015 December 31, 2014 June 30, 2014 dollars in millions Notional Average Payment / Notional Average Payment / Notional Average Payment / Single-name credit default swaps $ 5 .22 .87 % $ 5 .72 .87 % $ 45 .34 4.76 % Other 6 2.51 8.36 6 2.89 9.58 9 3.06 5.82 Total credit derivatives sold $ 11 — — $ 11 — — $ 54 — —
Credit Risk Contingent Feature	The following table summarizes the additional cash and securities collateral that KeyBank would have been required to deliver under the ISDA Master Agreements had the credit risk contingent features been triggered for the derivative contracts in a net liability position as of June 30, 2015, December 31, 2014, and June 30, 2014. The additional collateral amounts were calculated based on scenarios under which KeyBank’s ratings are downgraded one, two, or three ratings as of June 30, 2015, December 31, 2014, and June 30, 2014, and take into account all collateral already posted. A similar calculation was performed for KeyCorp, and no additional collateral would have been required as of June 30, 2015, while additional collateral of less than $1 million and $3 million would have been required as of December 31, 2014, and June 30, 2014, respectively. For more information about the credit ratings for KeyBank and KeyCorp, see the discussion under the heading “Factors affecting liquidity” in the section entitled “Liquidity risk management” in Item 2 of this report. June 30, 2015 December 31, 2014 June 30, 2014 in millions Moody’s S&P Moody’s S&P Moody’s S&P KeyBank’s long-term senior unsecured credit ratings A3 A- A3 A- A3 A- One rating downgrade $ 4 $ 4 $ 1 $ 1 $ 1 $ 1 Two rating downgrades 4 4 1 1 1 1 Three rating downgrades 6 6 3 3 1 1

Mortgage Servicing Assets (Tabl

Mortgage Servicing Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Changes in Carrying Amount of Mortgage Servicing Assets	We originate and periodically sell commercial mortgage loans but continue to service those loans for the buyers. We also may purchase the right to service commercial mortgage loans for other lenders. We record a servicing asset if we purchase or retain the right to service loans in exchange for servicing fees that exceed the going market servicing rate and are considered more than adequate compensation for servicing. Changes in the carrying amount of mortgage servicing assets are summarized as follows: Six months ended June 30, in millions 2015 2014 Balance at beginning of period $ 323 $ 332 Servicing retained from loan sales 28 13 Purchases 25 28 Amortization (47 ) (50 ) Balance at end of period $ 329 $ 323 Fair value at end of period $ 423 $ 402
Schedule of Range and Weighted-Average of Significant Unobservable Inputs	The range and weighted-average of the significant unobservable inputs used to fair value our mortgage servicing assets at June 30, 2015, and June 30, 2014, along with the valuation techniques, are shown in the following table: June 30, 2015 dollars in millions Valuation Technique Significant Unobservable Input Range (Weighted-Average) Mortgage servicing assets Discounted cash flow Prepayment speed 1.70 - 14.90% (4.70%) Expected defaults 1.00 - 3.00% (1.80%) Residual cash flows discount rate 7.00 - 15.00% (7.80%) Escrow earn rate 0.70 - 3.30% (2.00%) Servicing cost $150 - $2,750 ($1,088) Loan assumption rate 0.20 - 3.00% (1.41%) Percentage late 0.00 - 2.00% (0.32%) June 30, 2014 dollars in millions Valuation Technique Significant Unobservable Input Range (Weighted-Average) Mortgage servicing assets Discounted cash flow Prepayment speed 2.00 - 11.60% (5.70%) Expected defaults 1.00 - 3.00% (2.00%) Residual cash flows discount rate 7.00 - 14.10% (7.80%) Escrow earn rate 0.50 - 2.90% (1.60%) Servicing cost $150 - $5,000 ($990) Loan assumption rate 0.00 - 3.00% (1.59%) Percentage late 0.00 - 2.00% (0.33%)

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Variable Interest Entities Information	Further information regarding these education loan securitization trusts is provided in Note 11 (“Acquisitions and Discontinued Operations”) under the heading “Education lending.” Consolidated VIEs Unconsolidated VIEs Total Total Total Total Maximum in millions Assets Liabilities Assets Liabilities Exposure to Loss June 30, 2015 LIHTC funds $ 1 $ 1 $ 55 — — LIHTC investments N/A N/A 1,305 $ 4 $ 520 December 31, 2014 LIHTC funds $ 1 $ 1 $ 55 — — LIHTC investments N/A N/A 1,234 $ 4 $ 521 June 30, 2014 LIHTC funds $ 1 $ 2 $ 97 — — Education loan securitization trusts 1,730 1,677 N/A N/A N/A LIHTC investments N/A N/A 1,549 $ 5 $ 508

Acquisitions and Discontinued38

Acquisitions and Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Components of Income (Loss) from Discontinued Operations, Net of Taxes for Education Lending Business	The components of “income (loss) from discontinued operations, net of taxes” for the education lending business are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Net interest income $ 10 $ 23 $ 20 $ 46 Provision for credit losses — 6 2 10 Net interest income after provision for credit losses 10 17 18 36 Noninterest income (1 ) (56 ) 3 (70 ) Noninterest expense 4 6 8 12 Income (loss) before income taxes 5 (45 ) 13 (46 ) Income taxes 2 (17 ) 5 (17 ) Income (loss) from discontinued operations, net of taxes (a) $ 3 $ (28 ) $ 8 $ (29 ) (a) Includes after-tax charges of $5 million and $8 million for the three-month periods ended June 30, 2015, and June 30, 2014, respectively, and $11 million and $17 million for the six-month periods ended June 30, 2015, and June 30, 2014, respectively, determined by applying a matched funds transfer pricing methodology to the liabilities assumed necessary to support the discontinued operations.
Components of Assets and Liabilities of Education Lending Business	The discontinued assets and liabilities of our education lending business included on the balance sheet are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Held-to-maturity securities $ 1 $ 1 — Trust loans at fair value — — $ 1,711 Portfolio loans at fair value — 191 209 Loans, net of unearned income (a) 1,962 2,104 2,242 Less: Allowance for loan and lease losses 22 29 32 Net loans 1,940 2,266 4,130 Portfolio loans held for sale at fair value 179 — — Trust accrued income and other assets at fair value — — 19 Accrued income and other assets 34 38 41 Total assets $ 2,154 $ 2,305 $ 4,190 Trust accrued expense and other liabilities at fair value — — $ 17 Trust securities at fair value — — 1,660 Total liabilities — — $ 1,677 (a) At June 30, 2015, December 31, 2014, and June 30, 2014, unearned income was less than $1 million.
Quantitative Information about Level 3 Fair Value Measurements	The following table shows the significant unobservable inputs used to measure the fair value of the portfolio loans held for sale, portfolio loans, and education loan securitization trust loans and securities accounted for at fair value at June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 Fair Value of Level 3 Valuation Significant dollars in millions Assets and Liabilities Technique Unobservable Input Range Portfolio loans held for sale accounted for at fair value $ 179 Market approach Indicative bids 88.24 - 105.55% December 31, 2014 Fair Value of Level 3 Valuation Significant Range dollars in millions Assets and Liabilities Technique Unobservable Input (Weighted-Average) Portfolio loans accounted for at fair value $ 191 Discounted cash flow Prepayment speed 5.40 - 5.60% (5.50%) Loss severity 2.00 - 77.00% (25.66%) Discount rate 3.90 - 4.00% (3.92%) Default rate .86 - 1.70% (1.12%) June 30, 2014 Fair Value of Level 3 Valuation Significant Range dollars in millions Assets and Liabilities Technique Unobservable Input (Weighted-Average) Trust loans and portfolio loans accounted for at fair value $ 1,920 Discounted cash flow Prepayment speed 4.00 - 13.50% (6.97%) Loss severity 2.00 - 82.00% (52.01%) Discount rate 2.10 - 10.50% (3.52%) Default rate 8.50 - 26.00% (20.59%) Trust securities 1,660 Discounted cash flow Discount rate 1.20 - 3.00% (2.16%)
Principal and Fair Value Amounts for Portfolio Loans Held for Sale at Fair Value, Portfolio Loans at Carrying Value, Trust Loans at Fair Value, and Portfolio Loans at Fair Value	The following table shows the principal and fair value amounts for our portfolio loans held for sale at fair value, portfolio loans at carrying value, trust loans at fair value, and portfolio loans at fair value at June 30, 2015, December 31, 2014, and June 30, 2014. Our policies for determining past due loans, placing loans on nonaccrual, applying payments on nonaccrual loans, and resuming accrual of interest are disclosed in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Nonperforming Loans” beginning on page 116 of our 2014 Form 10-K. June 30, 2015 December 31, 2014 June 30, 2014 in millions Principal Fair Value Principal Fair Value Principal Fair Value Portfolio loans held for sale at fair value Accruing loans past due 90 days or more $ 5 $ 5 — — — — Portfolio loans at carrying value Accruing loans past due 90 days or more $ 26 N/A $ 29 N/A $ 29 N/A Loans placed on nonaccrual status 6 N/A 11 N/A 9 N/A Trust loans at fair value Accruing loans past due 90 days or more — — — — $ 23 $ 23 Loans placed on nonaccrual status — — — — 7 7 Portfolio loans at fair value Accruing loans past due 90 days or more — — $ 5 $ 5 $ 6 $ 6 Loans placed on nonaccrual status — — — — 1 1
Portfolio Loans Held for Sale at Fair Value, Portfolio Loans at Fair Value, and Consolidated Trusts' Assets and Liabilities at Fair Value and Related Contractual Values	The following table shows the portfolio loans held for sale at fair value, portfolio loans at fair value, and the consolidated trusts’ assets and liabilities at fair value and their related contractual values at June 30, 2015, December 31, 2014, and June 30, 2014. June 30, 2015 December 31, 2014 June 30, 2014 Contractual Fair Contractual Fair Contractual Fair in millions Amount Value Amount Value Amount Value ASSETS Portfolio loans held for sale $ 179 $ 179 — — — — Portfolio loans — — $ 192 $ 191 $ 207 $ 209 Trust loans — — — — 1,740 1,711 Trust other assets — — — — 19 19 LIABILITIES Trust securities — — — — $ 1,752 $ 1,660 Trust other liabilities — — — — 17 17
Consolidated Assets and Liabilities at Fair Value on Recurring Basis	The following tables present the assets and liabilities of the portfolio loans held for sale, portfolio loans, and consolidated education loan securitization trusts measured at fair value as well as the portfolio loans that are measured at fair value on a recurring basis at June 30, 2015, December 31, 2014, and June 30, 2014. June 30, 2015 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Portfolio loans held for sale — — $ 179 $ 179 Total assets on a recurring basis at fair value — — $ 179 $ 179 December 31, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Portfolio loans — — $ 191 $ 191 Total assets on a recurring basis at fair value — — $ 191 $ 191 June 30, 2014 in millions Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A RECURRING BASIS Portfolio loans — — $ 209 $ 209 Trust loans — — 1,711 1,711 Trust other assets — — 19 19 Total assets on a recurring basis at fair value — — $ 1,939 $ 1,939 LIABILITIES MEASURED ON A RECURRING BASIS Trust securities — — $ 1,660 $ 1,660 Trust other liabilities — — 17 17 Total liabilities on a recurring basis at fair value — — $ 1,677 $ 1,677
Change in Fair Values of Level 3 Portfolio Loans Held for Sale, Portfolio Loans, and Consolidated Education Loan Securitization Trusts and Portfolio Loans	The following table shows the change in the fair values of the Level 3 portfolio loans held for sale, portfolio loans, and consolidated education loan securitization trusts and portfolio loans for the three- and six-month periods ended June 30, 2015, and June 30, 2014. Portfolio Student Portfolio Trust Trust Trust Loans Held Student Student Other Trust Other in millions For Sale Loans Loans Assets Securities Liabilities Balance at December 31, 2014 — $ 191 — — — — Gains (losses) recognized in earnings (a) — 1 — — — — Settlements — (13 ) — — — — Loans transferred to held for sale $ 179 (179 ) — — — — Balance at June 30, 2015 (b) $ 179 — — — — — Balance at March 31, 2015 — $ 187 — — — — Gains (losses) recognized in earnings (a) — (2 ) — — — — Settlements — (6 ) — — — — Loans transferred to held for sale $ 179 (179 ) — — — — Balance at June 30, 2015 (b) $ 179 — — — — — Balance at December 31, 2013 — $ 147 $ 1,960 $ 20 $ 1,834 $ 20 Gains (losses) recognized in earnings (a) — (4 ) (34 ) — 33 — Purchases — 74 — — — — Sales — — (74 ) — — — Settlements — (8 ) (141 ) (1 ) (207 ) (3 ) Balance at June 30, 2014 (b) — $ 209 $ 1,711 $ 19 $ 1,660 $ 17 Balance at March 31, 2014 — $ 143 $ 1,893 $ 19 $ 1,796 $ 20 Gains (losses) recognized in earnings (a) — (4 ) (36 ) — 17 — Purchases — 74 — — — — Sales — — (74 ) — — — Settlements — (4 ) (72 ) — (153 ) (3 ) Balance at June 30, 2014 (b) — $ 209 $ 1,711 $ 19 $ 1,660 $ 17 (a) Gains (losses) were driven primarily by fair value adjustments. (b) There were no issuances, transfers into Level 3, or transfers out of Level 3 for the three- and six-month periods ended June 30, 2015, and June 30, 2014.
Components of Income (Loss) from Discontinued Operations, Net of Taxes	The results of this discontinued business are included in “income (loss) from discontinued operations, net of taxes” on the income statement. The components of “income (loss) from discontinued operations, net of taxes” for Victory, which includes the additional gain recorded as of March 31, 2014, on the sale of this business, are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Net interest income — $ 1 — $ 2 Noninterest income — — — 10 Noninterest expense — — — — Income (loss) before income taxes — 1 — 12 Income taxes — 1 — 5 Income (loss) from discontinued operations, net of taxes — — — $ 7 The results of this discontinued business are included in “income (loss) from discontinued operations, net of taxes” on the income statement. The components of “income (loss) from discontinued operations, net of taxes” for Austin are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Noninterest expense — — — $ 4 Income (loss) before income taxes — — — (4 ) Income taxes — — — (2 ) Income (loss) from discontinued operations, net of taxes — — — $ (2 )
Components of Assets and Liabilities from Discontinued Operations	The discontinued assets and liabilities of Victory included on the balance sheet are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Seller note (a) — — $ 28 Total assets — — $ 28 Accrued expense and other liabilities — — — Total liabilities — — — (a) At June 30, 2014, the only remaining asset of Victory was the Seller note. The Seller note was paid off during the fourth quarter of 2014. The discontinued assets and liabilities of Austin included on the balance sheet are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Cash and due from banks $ 15 $ 19 $ 19 Total assets $ 15 $ 19 $ 19 Accrued expense and other liabilities — $ 3 $ 3 Total liabilities — $ 3 $ 3
Combined Results of Discontinued Operations	Combined discontinued operations Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Net interest income $ 10 $ 24 $ 20 $ 48 Provision for credit losses — 6 2 10 Net interest income after provision for credit losses 10 18 18 38 Noninterest income (1 ) (56 ) 3 (60 ) Noninterest expense 4 6 8 16 Income (loss) before income taxes 5 (44 ) 13 (38 ) Income taxes 2 (16 ) 5 (14 ) Income (loss) from discontinued operations, net of taxes (a) $ 3 $ (28 ) $ 8 $ (24 ) (a) Includes after-tax charges of $5 million and $8 million for the three-month periods ended June 30, 2015, and June 30, 2014, respectively, and $11 million and $17 million for the six-month periods ended June 30, 2015, and June 30, 2014, respectively, determined by applying a matched funds transfer pricing methodology to the liabilities assumed necessary to support the discontinued operations.
Combined Assets and Liabilities of Discontinued Operations	The combined assets and liabilities of the discontinued operations are as follows: June 30, December 31, June 30, in millions 2015 2014 2014 Cash and due from banks $ 15 $ 19 $ 19 Held-to-maturity securities 1 1 — Seller note — — 28 Trust loans at fair value — — 1,711 Portfolio loans at fair value — 191 209 Loans, net of unearned income (a) 1,962 2,104 2,242 Less: Allowance for loan and lease losses 22 29 32 Net loans 1,940 2,266 4,130 Portfolio loans held for sale at fair value 179 — — Trust accrued income and other assets at fair value — — 19 Accrued income and other assets 34 38 41 Total assets $ 2,169 $ 2,324 $ 4,237 Trust accrued expense and other liabilities at fair value — — $ 17 Accrued expense and other liabilities — $ 3 3 Trust securities at fair value — — 1,660 Total liabilities — $ 3 $ 1,680 (a) At June 30, 2015, December 31, 2014, and June 30, 2014, unearned income was less than $1 million.

Securities Financing Activiti39

Securities Financing Activities (Tables)	6 Months Ended
	Jun. 30, 2015
Brokers and Dealers [Abstract]
Summarized Securities Financing Agreements	The following table summarizes our securities financing agreements at June 30, 2015, December 31, 2014, and June 30, 2014: June 30, 2015 Gross Amount Presented in Netting Net in millions Balance Sheet Adjustments (a) Collateral (b) Amounts Offsetting of financial assets: Reverse repurchase agreements $ 3 $ (3 ) — — Total $ 3 $ (3 ) — — Offsetting of financial liabilities: Repurchase agreements (c) $ 4 $ (3 ) $ (1 ) — Total $ 4 $ (3 ) $ (1 ) — December 31, 2014 Gross Amount Presented in Netting Net in millions Balance Sheet Adjustments (a) Collateral (b) Amounts Offsetting of financial assets: Reverse repurchase agreements $ 3 $ (1 ) $ (2 ) — Total $ 3 $ (1 ) $ (2 ) — Offsetting of financial liabilities: Repurchase agreements $ 1 $ (1 ) — — Total $ 1 $ (1 ) — — June 30, 2014 Gross Amount Presented in Netting Net in millions Balance Sheet Adjustments (a) Collateral (b) Amounts Offsetting of financial assets: Reverse repurchase agreements $ 540 $ (216 ) $ (315 ) $ 9 Securities borrowed 24 — (23 ) 1 Total $ 564 $ (216 ) $ (338 ) $ 10 Offsetting of financial liabilities: Repurchase agreements $ 495 $ (216 ) $ (279 ) — Total $ 495 $ (216 ) $ (279 ) — (a) Netting adjustments take into account the impact of master netting agreements that allow us to settle with a single counterparty on a net basis. (b) These adjustments take into account the impact of bilateral collateral agreements that allow us to offset the net positions with the related collateral. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above. (c) Repurchase agreements are collateralized by U.S. Treasury securities and contracted on an overnight basis.

Employee Benefits (Tables)

Employee Benefits (Tables)	6 Months Ended
	Jun. 30, 2015
Pension Plans [Member]
Summary of Defined Benefit Plans Cost (Benefit) for All Funded and Unfunded Plans	The components of net pension cost (benefit) for all funded and unfunded plans are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Interest cost on PBO $ 10 $ 12 $ 20 $ 24 Expected return on plan assets (14 ) (17 ) (28 ) (34 ) Amortization of losses 5 4 9 8 Net pension cost (benefit) $ 1 $ (1 ) $ 1 $ (2 )
Other Postretirement Benefit Plans [Member]
Summary of Defined Benefit Plans Cost (Benefit) for All Funded and Unfunded Plans	The components of net postretirement benefit cost for all funded and unfunded plans are as follows: Three months ended June 30, Six months ended June 30, in millions 2015 2014 2015 2014 Interest cost on APBO $ 1 $ 1 $ 2 $ 2 Expected return on plan assets — (1 ) (1 ) (2 ) Amortization of unrecognized prior service credit (1 ) — (1 ) — Net postretirement benefit cost — — — —

Trust Preferred Securities Is41

Trust Preferred Securities Issued by Unconsolidated Subsidiaries (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Summary of Trust Preferred Securities, Common Stock and Related Debentures	The trust preferred securities, common stock, and related debentures are summarized as follows: Principal Interest Rate Maturity Trust Preferred Amount of of Trust Preferred of Trust Preferred Securities, Common Debentures, Securities and Securities and dollars in millions Net of Discount (a) Stock Net of Discount (b) Debentures (c) Debentures June 30, 2015 KeyCorp Capital I $ 156 $ 6 $ 162 1.014 % 2028 KeyCorp Capital II 107 4 111 6.875 2029 KeyCorp Capital III 139 4 143 7.750 2029 Total $ 402 $ 14 $ 416 4.903 % — December 31, 2014 $ 408 $ 14 $ 422 4.926 % — June 30, 2014 $ 397 $ 14 $ 411 4.856 % — (a) The trust preferred securities must be redeemed when the related debentures mature, or earlier if provided in the governing indenture. Each issue of trust preferred securities carries an interest rate identical to that of the related debenture. Certain trust preferred securities include basis adjustments related to fair value hedges totaling $62 million at June 30, 2015, $68 million at December 31, 2014, and $57 million at June 30, 2014. See Note 7 (“Derivatives and Hedging Activities”) for an explanation of fair value hedges. (b) We have the right to redeem these debentures. If the debentures purchased by KeyCorp Capital I are redeemed before they mature, the redemption price will be the principal amount, plus any accrued but unpaid interest. If the debentures purchased by KeyCorp Capital II or KeyCorp Capital III are redeemed before they mature, the redemption price will be the greater of: (i) the principal amount, plus any accrued but unpaid interest, or (ii) the sum of the present values of principal and interest payments discounted at the Treasury Rate (as defined in the applicable indenture), plus 20 basis points for KeyCorp Capital II or 25 basis points for KeyCorp Capital III or 50 basis points in the case of redemption upon either a tax or a capital treatment event for either KeyCorp Capital II or KeyCorp Capital III, plus any accrued but unpaid interest. The principal amount of certain debentures includes basis adjustments related to fair value hedges totaling $62 million at June 30, 2015, $68 million at December 31, 2014, and $57 million at June 30, 2014. See Note 7 for an explanation of fair value hedges. The principal amount of debentures, net of discounts, is included in “long-term debt” on the balance sheet. (c) The interest rates for the trust preferred securities issued by KeyCorp Capital II and KeyCorp Capital III are fixed. KeyCorp Capital I has a floating interest rate, equal to three-month LIBOR plus 74 basis points, that reprices quarterly. The total interest rates are weighted-average rates.

Contingent Liabilities and Gu42

Contingent Liabilities and Guarantees (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Guarantees	The following table shows the types of guarantees that we had outstanding at June 30, 2015. Information pertaining to the basis for determining the liabilities recorded in connection with these guarantees is included in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Guarantees” beginning on page 124 of our 2014 Form 10-K. Maximum Potential June 30, 2015 in millions Undiscounted Liability Future Payments Recorded Financial guarantees: Standby letters of credit $ 10,933 $ 64 Recourse agreement with FNMA 1,714 4 Return guarantee agreement with LIHTC investors 4 4 Written put options (a) 2,092 82 Total $ 14,743 $ 154 (a) The maximum potential undiscounted future payments represent notional amounts of derivatives qualifying as guarantees.

Accumulated Other Comprehensi43

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Changes in AOCI	Our changes in AOCI for the three and six months ended June 30, 2015, and June 30, 2014, are as follows: Unrealized gains Unrealized gains Foreign currency Net pension and (losses) on securities (losses) on derivative translation postretirement in millions available for sale financial instruments adjustment benefit costs Total Balance at December 31, 2014 $ (4 ) $ (8 ) $ 22 $ (366 ) $ (356 ) Other comprehensive income before reclassification, net of income taxes 3 42 (14 ) — 31 Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) 1 (27 ) 1 5 (20 ) Net current-period other comprehensive income, net of income taxes 4 15 (13 ) 5 11 Balance at June 30, 2015 — $ 7 $ 9 $ (361 ) $ (345 ) Balance at March 31, 2015 $ 51 $ 24 $ 9 $ (363 ) $ (279 ) Other comprehensive income before reclassification, net of income taxes (52 ) (3 ) (1 ) — (56 ) Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) 1 (14 ) 1 2 (10 ) Net current-period other comprehensive income, net of income taxes (51 ) (17 ) — 2 (66 ) Balance at June 30, 2015 — $ 7 $ 9 $ (361 ) $ (345 ) Balance at December 31, 2013 $ (63 ) $ (11 ) $ 42 $ (320 ) $ (352 ) Other comprehensive income before reclassification, net of income taxes 57 22 — — 79 Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) — (18 ) (3 ) 5 (16 ) Net current-period other comprehensive income, net of income taxes 57 4 (3 ) 5 63 Balance at June 30, 2014 $ (6 ) $ (7 ) $ 39 $ (315 ) $ (289 ) Balance at March 31, 2014 $ (34 ) $ (12 ) $ 40 $ (318 ) $ (324 ) Other comprehensive income before reclassification, net of income taxes 28 15 — — 43 Amounts reclassified from accumulated other comprehensive income, net of income taxes (a) — (10 ) (1 ) 3 (8 ) Net current-period other comprehensive income, net of income taxes 28 5 (1 ) 3 35 Balance at June 30, 2014 $ (6 ) $ (7 ) $ 39 $ (315 ) $ (289 ) (a) See table below for details about these reclassifications.
Reclassifications Out of AOCI	Our reclassifications out of AOCI for the three and six months ended June 30, 2015, and June 30, 2014, are as follows: Amount Reclassified from Six months ended June 30, 2015 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on available for sale securities Realized losses $ (1 ) Other income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Unrealized gains (losses) on derivative financial instruments Interest rate $ 45 Interest income — Loans Interest rate (2 ) Interest expense — Long term debt 43 Income (loss) from continuing operations before income taxes 16 Income taxes $ 27 Income (loss) from continuing operations Foreign currency translation adjustment $ (1 ) Corporate services income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (9 ) Personnel expense Amortization of unrecognized prior service cost 1 Personnel expense (8 ) Income (loss) from continuing operations before income taxes (3 ) Income taxes $ (5 ) Income (loss) from continuing operations Amount Reclassified from Three months ended June 30, 2015 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on available for sale securities Realized losses $ (1 ) Other income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Unrealized gains (losses) on derivative financial instruments Interest rate $ 23 Interest income — Loans Interest rate (1 ) Interest expense — Long term debt 22 Income (loss) from continuing operations before income taxes 8 Income taxes $ 14 Income (loss) from continuing operations Foreign currency translation adjustment $ (1 ) Corporate services income (1 ) Income (loss) from continuing operations before income taxes — Income taxes $ (1 ) Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (5 ) Personnel expense Amortization of unrecognized prior service cost 1 Personnel expense (4 ) Income (loss) from continuing operations before income taxes (2 ) Income taxes $ (2 ) Income (loss) from continuing operations Amount Reclassified from Six months ended June 30, 2014 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on derivative financial instruments Interest rate $ 31 Interest income — Loans Interest rate (2 ) Interest expense — Long term debt Foreign exchange contracts (1 ) Other income 28 Income (loss) from continuing operations before income taxes 10 Income taxes $ 18 Income (loss) from continuing operations Foreign currency translation adjustment $ 3 Corporate services income 3 Income (loss) from continuing operations before income taxes — Income taxes $ 3 Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (8 ) Personnel expense (8 ) Income (loss) from continuing operations before income taxes (3 ) Income taxes $ (5 ) Income (loss) from continuing operations Amount Reclassified from Three months ended June 30, 2014 in millions Accumulated Other Affected Line Item in the Statement Comprehensive Income Where Net Income is Presented Unrealized gains (losses) on derivative financial instruments Interest rate $ 16 Interest income — Loans Interest rate (1 ) Interest expense — Long term debt Foreign exchange contracts (1 ) Other income 14 Income (loss) from continuing operations before income taxes 4 Income taxes $ 10 Income (loss) from continuing operations Foreign currency translation adjustment — Corporate services income — Income (loss) from continuing operations before income taxes $ (1 ) Income taxes $ 1 Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (4 ) Personnel expense (4 ) Income (loss) from continuing operations before income taxes (1 ) Income taxes $ (3 ) Income (loss) from continuing operations

Line of Business Results (Table

Line of Business Results (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Financial Information of Business Groups	Accordingly, financial results may be revised periodically to reflect enhanced alignment of expense base allocation drivers, changes in the risk profile of a particular business, or changes in our organizational structure. Three months ended June 30, dollars in millions Key Community Bank Key Corporate Bank 2015 2014 2015 2014 SUMMARY OF OPERATIONS Net interest income (TE) $ 362 $ 361 $ 227 $ 210 Noninterest income 197 192 250 185 Total revenue (TE) (a) 559 553 477 395 Provision for credit losses 7 25 38 (4 ) Depreciation and amortization expense 14 16 11 7 Other noninterest expense 435 427 241 200 Income (loss) from continuing operations before income taxes (TE) 103 85 187 192 Allocated income taxes and TE adjustments 38 32 52 54 Income (loss) from continuing operations 65 53 135 138 Income (loss) from discontinued operations, net of taxes — — — — Net income (loss) 65 53 135 138 Less: Net income (loss) attributable to noncontrolling interests — — — 3 Net income (loss) attributable to Key $ 65 $ 53 $ 135 $ 135 AVERAGE BALANCES (b) Loans and leases $ 30,707 $ 30,034 $ 25,298 $ 22,886 Total assets (a) 32,758 32,132 31,228 28,007 Deposits 50,766 50,232 19,708 16,357 OTHER FINANCIAL DATA Net loan charge-offs (b) $ 20 $ 33 $ 12 $ (2 ) Return on average allocated equity (b) 9.75 % 7.83 % 30.15 % 35.72 % Return on average allocated equity 9.75 7.83 30.15 35.72 Average full-time equivalent employees (c) 7,400 7,569 2,058 1,940 Six months ended June 30, dollars in millions Key Community Bank Key Corporate Bank 2015 2014 2015 2014 SUMMARY OF OPERATIONS Net interest income (TE) $ 720 $ 724 $ 440 $ 406 Noninterest income 388 375 438 380 Total revenue (TE) (a) 1,108 1,099 878 786 Provision for credit losses 36 36 46 (7 ) Depreciation and amortization expense 29 34 20 14 Other noninterest expense 860 846 447 394 Income (loss) from continuing operations before income taxes (TE) 183 183 365 385 Allocated income taxes and TE adjustments 68 68 101 111 Income (loss) from continuing operations 115 115 264 274 Income (loss) from discontinued operations, net of taxes — — — — Net income (loss) 115 115 264 274 Less: Net income (loss) attributable to noncontrolling interests — — 2 2 Net income (loss) attributable to Key $ 115 $ 115 $ 262 $ 272 AVERAGE BALANCES (b) Loans and leases $ 30,684 $ 29,916 $ 25,012 $ 22,441 Total assets (a) 32,737 32,025 30,765 27,591 Deposits 50,592 50,073 19,141 16,175 OTHER FINANCIAL DATA Net loan charge-offs (b) $ 49 $ 61 $ 8 $ (14 ) Return on average allocated equity (b) 8.57 % 8.41 % 28.89 % 35.87 % Return on average allocated equity 8.57 8.41 28.89 35.87 Average full-time equivalent employees (c) 7,426 7,633 2,057 1,928 (a) Substantially all revenue generated by our major business segments is derived from clients that reside in the United States. Substantially all long-lived assets, including premises and equipment, capitalized software, and goodwill held by our major business segments, are located in the United States. (b) From continuing operations. (c) The number of average full-time equivalent employees was not adjusted for discontinued operations. Other Segments Total Segments Reconciling Items Key 2015 2014 2015 2014 2015 2014 2015 2014 — $ 6 $ 589 $ 577 $ 2 $ 2 $ 591 $ 579 $ 44 81 491 458 (3 ) (3 ) 488 455 44 87 1,080 1,035 (1 ) (1 ) 1,079 1,034 (4 ) (8 ) 41 13 — (1 ) 41 12 2 3 27 26 38 38 65 64 13 17 689 644 (43 ) (21 ) 646 623 33 75 323 352 4 (17 ) 327 335 1 18 91 104 — (22 ) 91 82 32 57 232 248 4 5 236 253 — — — — 3 (28 ) 3 (28 ) 32 57 232 248 7 (23 ) 239 225 1 3 1 6 — — 1 6 $ 31 $ 54 $ 231 $ 242 $ 7 $ (23 ) $ 238 $ 219 $ 1,903 $ 2,615 $ 57,908 $ 55,535 $ 70 $ 76 $ 57,978 $ 55,611 27,023 25,897 91,009 86,036 650 705 91,659 86,741 442 635 70,916 67,224 (78 ) (101 ) 70,838 67,123 $ 3 — $ 35 $ 31 $ 1 $ (1 ) $ 36 $ 30 31.72 % 43.93 % 19.05 % 20.55 % .28 % .35 % 8.90 % 9.47 % 31.72 43.93 19.05 20.55 .49 (1.61 ) 9.01 8.40 14 46 9,472 9,555 3,983 4,312 13,455 13,867 Other Segments Total Segments Reconciling Items Key 2015 2014 2015 2014 2015 2014 2015 2014 $ 4 $ 16 $ 1,164 $ 1,146 $ 4 $ 2 $ 1,168 $ 1,148 107 137 933 892 (8 ) (2 ) 925 890 111 153 2,097 2,038 (4 ) — 2,093 2,038 (7 ) (12 ) 75 17 1 (1 ) 76 16 5 6 54 54 75 76 129 130 25 40 1,332 1,280 (81 ) (59 ) 1,251 1,221 88 119 636 687 1 (16 ) 637 671 11 24 180 203 (9 ) (23 ) 171 180 77 95 456 484 10 7 466 491 — — — — 8 (24 ) 8 (24 ) 77 95 456 484 18 (17 ) 474 467 1 4 3 6 — — 3 6 $ 76 $ 91 $ 453 $ 478 $ 18 $ (17 ) $ 471 $ 461 $ 1,973 $ 2,763 $ 57,669 $ 55,120 $ 77 $ 61 $ 57,746 $ 55,181 26,484 25,902 89,986 85,518 664 684 90,650 86,202 454 605 70,187 66,853 (80 ) (142 ) 70,107 66,711 $ 7 $ 4 $ 64 $ 51 — $ (1 ) $ 64 $ 50 37.94 % 36.41 % 18.50 % 20.12 % .36 % .25 % 4.38 % 4.66 % 37.94 36.41 18.50 20.12 .64 (.61 ) 4.45 4.43 15 59 9,498 9,620 4,014 4,341 13,512 13,961

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015
Equity Method Investments [Member]
Accounting Policies [Line Items]
Economic interest in unconsolidated investments in voting rights entities, minimum	20.00%
Economic interest in unconsolidated investments in voting rights entities, maximum	50.00%
Cost Method Investments [Member]
Accounting Policies [Line Items]
Economic interest in unconsolidated investments in voting rights entities, Ownership less than	20.00%

Earnings Per Common Share - Bas

Earnings Per Common Share - Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
EARNINGS
Income (loss) from continuing operations		$ 236	$ 253	$ 466	$ 491
Less: Net income (loss) attributable to noncontrolling interests		1	6	3	6
Income (loss) from continuing operations attributable to Key		235	247	463	485
Income (loss) from continuing operations attributable to Key common shareholders		230	242	452	474
Income (loss) from discontinued operations, net of taxes (a)		3	(28)	8	(24)
Net income (loss) attributable to Key common shareholders		$ 233	$ 214	$ 460	$ 450
WEIGHTED-AVERAGE COMMON SHARES
Weighted-average common shares outstanding		839,454	875,298	843,992	879,986
Effect of convertible preferred stock			20,602
Effect of common share options and other stock awards		6,858	6,237	7,695	6,698
Weighted-average common shares and potential common shares outstanding	[1]	846,312	902,137	851,687	886,684
EARNINGS PER COMMON SHARE
Income (loss) from continuing operations attributable to Key common shareholders		$ 0.27	$ 0.28	$ 0.53	$ 0.54
Income (loss) from discontinued operations, net of taxes (a)			(0.03)	0.01	(0.03)
Net income (loss) attributable to Key common shareholders (c)	[2]	0.28	0.24	0.54	0.51
Income (loss) from continuing operations attributable to Key common shareholders - assuming dilution		0.27	0.27	0.52	0.53
Income (loss) from discontinued operations, net of taxes (a)			(0.03)	0.01	(0.03)
Net income (loss) attributable to Key common shareholders - assuming dilution (c)	[2]	$ 0.27	$ 0.24	$ 0.53	$ 0.51
Series A Preferred Stock [Member]
EARNINGS
Less: Dividends on Series A Preferred Stock		$ 5	$ 5	$ 11	$ 11
[1]	Assumes conversion of common share options and other stock awards and/or convertible preferred stock, as applicable.
[2]	EPS may not foot due to rounding.

Loans and Loans Held for Sale -

Loans and Loans Held for Sale - Loans by Category (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial, financial and agricultural	$ 29,285	$ 27,982	$ 26,327
Commercial real estate:
Commercial mortgage	7,874	8,047	7,946
Construction	1,254	1,100	1,047
Total commercial real estate loans	9,128	9,147	8,993
Commercial lease financing	4,010	4,252	4,241
Total commercial loans	42,423	41,381	39,561
Residential - prime loans:
Real estate - residential mortgage	2,252	2,225	2,189
Home equity loans	10,532	10,633	10,679
Total residential - prime loans	12,784	12,858	12,868
Credit cards	753	754	718
Consumer other	709	828	939
Total consumer loans	15,841	16,000	16,039
Loans Outstanding	58,264	57,381	55,600
Key Community Bank [Member]
Residential - prime loans:
Home equity loans	10,296	10,366	10,379
Consumer other	1,595	1,560	1,514
Other loans [Member]
Residential - prime loans:
Home equity loans	236	267	300
Consumer other	36	49	51
Marine loans [Member]
Residential - prime loans:
Consumer other	$ 673	$ 779	$ 888

Loans and Loans Held for Sale48

Loans and Loans Held for Sale - Loans by Category (Parenthetical) (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial, financial and agricultural	$ 29,285	$ 26,327	$ 27,982
Commercial lease financing includes receivables held as collateral for secured borrowing	191	375	302
Purchased loans	125	151	138
Education Lending [Member] | Discontinued Operations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,000	4,200	2,300
Commercial Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial, financial and agricultural	89	94	88
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased loans	$ 12	$ 15	$ 13

Loans and Loans Held for Sale49

Loans and Loans Held for Sale - Loans Held for Sale (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial, financial and agricultural	$ 217		$ 63		$ 181
Commercial lease financing	7		15		10
Total loans held for sale	835	$ 1,649	734	$ 784	435	$ 401
Commercial Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real estate - mortgage	576		638		221
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real estate - mortgage	$ 35		$ 18		$ 23

Loans and Loans Held for Sale50

Loans and Loans Held for Sale - Loans Held for Sale (Parenthetical) (Detail) $ in Millions	Jun. 30, 2015USD ($)
Loans Receivables [Abstract]
Loan securitization trust VIEs	$ 179

Loans and Loans Held for Sale51

Loans and Loans Held for Sale - Summary of Changes in Loans Held for Sale (Detail) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Loans Receivables [Abstract]
Balance at beginning of the period	$ 1,649	$ 784	$ 401
New originations	1,650	2,465	978
Transfers from (to) held to maturity, net	6	2	(8)
Loan sales	(2,466)	(2,516)	(934)
Loan draws (payments), net	(4)	(1)	(2)
Balance at end of period	$ 835	$ 734	$ 435

Loans and Loans Held for Sale52

Loans and Loans Held for Sale - Summary of Changes in Loans Held for Sale (Parenthetical) (Detail) $ in Millions	Jun. 30, 2015USD ($)
Loans Receivables [Abstract]
Loan securitization trust VIEs	$ 179

Asset Quality - Nonperforming A

Asset Quality - Nonperforming Assets and Past Due Loans (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Receivables [Abstract]
Total nonperforming loans	$ 419	$ 418	$ 396
Nonperforming loans held for sale			1
OREO	20	18	12
Other nonperforming assets	1		1
Total nonperforming assets	440	436	410
Nonperforming assets from discontinued operations - education lending	6	11	19
Restructured loans included in nonperforming loans	170	157	142
Restructured loans with an allocated specific allowance	79	82	59
Specifically allocated allowance for restructured loans	36	34	30
Accruing loans past due 90 days or more	66	96	83
Accruing loans past due 30 through 89 days	$ 181	$ 235	$ 274

Asset Quality - Nonperforming54

Asset Quality - Nonperforming Assets and Past Due Loans (Parenthetical) (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Purchased credit impaired loans	$ 12	$ 13	$ 15
Restructured loans	19	$ 17	$ 18
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Carrying value of foreclosed residential real estate	116
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Carrying value of foreclosed residential real estate	$ 15

Asset Quality - Additional Info

Asset Quality - Additional Information (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015USD ($)SecurityLoan	Jun. 30, 2014USD ($)SecurityLoan	Jun. 30, 2015USD ($)SecurityLoan	Jun. 30, 2014USD ($)SecurityLoan	Dec. 31, 2014USD ($)	Mar. 31, 2015USD ($)	Mar. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Estimated gross contractual amount receivable of PCI loans	$ 41,000,000		$ 41,000,000
Estimated cash flows nonaccretable amount			11,000,000
Estimated cash flows accretable amount	5,000,000		5,000,000
Purchased Credit Impaired, Outstanding	12,000,000	$ 15,000,000	12,000,000	$ 15,000,000	$ 13,000,000
Accretable yield	$ 5,000,000		$ 5,000,000
Percentage of carrying amount of our commercial nonperforming loans outstanding	76.00%		76.00%
Percentage of nonperforming loans outstanding face value	80.00%		80.00%
Percentage of loans held for sale and other nonperforming assets	80.00%		80.00%
Aggregate carrying amount of largest nonperforming loans		$ 55,000,000		$ 55,000,000
Number of largest nonperforming loans | SecurityLoan	20	20	20	20
Total loans on nonperforming status from continuing operations	$ 120,000,000		$ 120,000,000
Percentage of total loans on nonperforming status	29.00%	14.00%	29.00%	14.00%
Net reduction to interest income			$ 8,000,000		16,000,000
Interest income recognized on outstanding balances			3,000,000	$ 4,000,000
Total restructured loans	$ 300,000,000	$ 266,000,000	300,000,000	266,000,000	270,000,000
Addition in restructured loans			73,000,000
Restructured loans partially in payments and charge-offs			43,000,000
Loans net of deferred income	58,264,000,000	55,600,000,000	58,264,000,000	55,600,000,000	57,381,000,000
Minimum outstanding impaired commercial loans	2,500,000		$ 2,500,000
Number of days to designate commercial loans will be charged off in full or charged down to the fair value of the underlying collateral payment due period			180 days
Number of days to designate the charge-off policy for consumer loans taking effect, payment due period			120 days
Number of days to designate home equity and residential mortgage loans to get charged down to the fair value of the underlying collateral payment due period			180 days
Number of days to designate the charge-off policy for credit card loans taking effect, payment due period			180 days
ALLL	796,000,000	814,000,000	$ 796,000,000	$ 814,000,000	794,000,000
ALLL percentage			1.37%	1.46%
ALLL of nonperforming loans percentage			190.00%	205.60%
Provision (credit) for loan and lease losses			$ 67,000,000	$ 25,000,000	10,000,000
Liability for credit losses on lending-related commitments	$ 45,000,000	$ 37,000,000	$ 45,000,000	$ 37,000,000	35,000,000	$ 41,000,000	$ 35,000,000	$ 37,000,000
Percentage of total allowance for credit losses	1.44%	1.53%	1.44%	1.53%
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Changes in the accretable yield, accretion			$ 1,000,000
Changes in the accretable yield, net reclassifications			$ 1,000,000
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nature of default in repayment of loan TDRs			90 days past due
Number of loans | SecurityLoan	0	0
Loans net of deferred income	$ 42,423,000,000	$ 39,561,000,000	$ 42,423,000,000	$ 39,561,000,000	41,381,000,000
Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nature of default in repayment of loan TDRs			More than 60 days past due
Number of loans | SecurityLoan	65	107
Financial receivable, modifications, subsequent default, recorded investment	$ 3,000,000	$ 4,000,000
Loans net of deferred income	15,841,000,000	16,039,000,000	$ 15,841,000,000	16,039,000,000	16,000,000,000
Continuing Operations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Outstanding	12,000,000	15,000,000	12,000,000	15,000,000	13,000,000
Loans net of deferred income	58,264,000,000	55,600,000,000	58,264,000,000	55,600,000,000	57,381,000,000
Increase (decrease) in allowance for loan losses			$ 18,000,000
Percentage decrease in allowance for loan losses			2.20%
Individually evaluated for impairment, outstanding	334,000,000	276,000,000	$ 334,000,000	276,000,000	302,000,000
Individually evaluated for Impairment, corresponding allowance	52,000,000	32,000,000	52,000,000	32,000,000	40,000,000
Collectively Evaluated for Impairment, Outstanding	57,918,000,000	55,309,000,000	57,918,000,000	55,309,000,000	57,066,000,000
Collectively evaluated for current, corresponding allowance	743,000,000	781,000,000	743,000,000	781,000,000	753,000,000
Provision (credit) for loan and lease losses			66,000,000	16,000,000
Continuing Operations [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Outstanding		1,000,000		1,000,000	1,000,000
Loans net of deferred income	42,423,000,000	39,561,000,000	42,423,000,000	39,561,000,000	41,381,000,000
Individually evaluated for impairment, outstanding	105,000,000	48,000,000	105,000,000	48,000,000	72,000,000
Individually evaluated for Impairment, corresponding allowance	25,000,000	4,000,000	25,000,000	4,000,000	12,000,000
Collectively Evaluated for Impairment, Outstanding	42,318,000,000	39,512,000,000	42,318,000,000	39,512,000,000	41,308,000,000
Collectively evaluated for current, corresponding allowance	621,000,000	622,000,000	621,000,000	622,000,000	611,000,000
Provision (credit) for loan and lease losses			43,000,000	(6,000,000)
Continuing Operations [Member] | Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Outstanding	12,000,000	14,000,000	12,000,000	14,000,000	12,000,000
Loans net of deferred income	15,841,000,000	16,039,000,000	15,841,000,000	16,039,000,000	16,000,000,000
Individually evaluated for impairment, outstanding	229,000,000	228,000,000	229,000,000	228,000,000	230,000,000
Individually evaluated for Impairment, corresponding allowance	27,000,000	28,000,000	27,000,000	28,000,000	28,000,000
Collectively Evaluated for Impairment, Outstanding	15,600,000,000	15,797,000,000	15,600,000,000	15,797,000,000	15,758,000,000
Collectively evaluated for current, corresponding allowance	122,000,000	159,000,000	122,000,000	159,000,000	142,000,000
Provision (credit) for loan and lease losses			23,000,000	22,000,000
Continuing Operations [Member] | Purchase Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for Impairment, corresponding allowance	1,000,000	1,000,000	1,000,000	1,000,000
Collectively Evaluated for Impairment, Outstanding	12,000,000	15,000,000	12,000,000	15,000,000
Provision (credit) for loan and lease losses			0	0
Performing [Member] | Loans, Total [Member] | Credit Concentration Risk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans net of deferred income	57,600,000,000	54,800,000,000	$ 57,600,000,000	$ 54,800,000,000	$ 56,600,000,000
Concentration risk			98.80%	98.60%	98.70%
Nonperforming [Member] | Loans, Total [Member] | Credit Concentration Risk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans net of deferred income	666,000,000	$ 753,000,000	$ 666,000,000	$ 753,000,000	$ 749,000,000
Concentration risk			1.20%	1.40%	1.30%
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Outstanding	18,000,000		$ 18,000,000
Purchased credit impaired loans carrying value	$ 12,000,000		$ 12,000,000

Asset Quality - Breakdown of In

Asset Quality - Breakdown of Individually Impaired Loans (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	$ 111	$ 136	$ 115
Recorded Investment	334	276	302
With no related allowance recorded, Unpaid Principal Balance	162	158	133
Unpaid Principal Balance	399	301	320
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	120	150	131
With related allowance recorded, Recorded Investment	223	140	187
With related allowance recorded, Unpaid Principal Balance	237	143	187
Specific Allowance	52	32	40
With related allowance recorded, Average Recorded Investment	216	140	169
Average Recorded Investment	336	290	300
Commercial, Financial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	9	12	6
With no related allowance recorded, Unpaid Principal Balance	56	18	17
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	15	23	8
With related allowance recorded, Recorded Investment	73	5	37
With related allowance recorded, Unpaid Principal Balance	86	7	37
Specific Allowance	24	3	9
With related allowance recorded, Average Recorded Investment	67	6	28
Commercial Real Estate: Commercial Mortgage [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	10	23	15
With no related allowance recorded, Unpaid Principal Balance	14	28	20
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	12	23	19
With related allowance recorded, Recorded Investment	6	2	6
With related allowance recorded, Unpaid Principal Balance	7	3	6
Specific Allowance	1	1	2
With related allowance recorded, Average Recorded Investment	6	2	6
Commercial Real Estate: Construction [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	7	6	5
With no related allowance recorded, Unpaid Principal Balance	7	17	6
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	7	6	7
With related allowance recorded, Recorded Investment			3
With related allowance recorded, Unpaid Principal Balance			3
Specific Allowance			1
With related allowance recorded, Average Recorded Investment			2
Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	17	29	20
With no related allowance recorded, Unpaid Principal Balance	21	45	26
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	19	29	26
With related allowance recorded, Recorded Investment	6	2	9
With related allowance recorded, Unpaid Principal Balance	7	3	9
Specific Allowance	1	1	3
With related allowance recorded, Average Recorded Investment	6	2	8
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	26	41	26
With no related allowance recorded, Unpaid Principal Balance	77	63	43
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	34	52	34
With related allowance recorded, Recorded Investment	79	7	46
With related allowance recorded, Unpaid Principal Balance	93	10	46
Specific Allowance	25	4	12
With related allowance recorded, Average Recorded Investment	73	8	36
Real Estate - Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	22	25	24
With no related allowance recorded, Unpaid Principal Balance	22	25	24
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	22	26	30
With related allowance recorded, Recorded Investment	33	29	31
With related allowance recorded, Unpaid Principal Balance	33	29	31
Specific Allowance	5	5	5
With related allowance recorded, Average Recorded Investment	33	28	25
Home Equity: Key Community Bank [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	60	66	62
With no related allowance recorded, Unpaid Principal Balance	60	66	63
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	61	68	63
With related allowance recorded, Recorded Investment	53	37	46
With related allowance recorded, Unpaid Principal Balance	53	37	46
Specific Allowance	17	15	16
With related allowance recorded, Average Recorded Investment	51	36	43
Home Equity: Other [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	2	2	1
With no related allowance recorded, Unpaid Principal Balance	2	2	1
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	2	2	2
With related allowance recorded, Recorded Investment	10	11	11
With related allowance recorded, Unpaid Principal Balance	10	11	11
Specific Allowance	2	3	2
With related allowance recorded, Average Recorded Investment	11	11	11
Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	62	68	63
With no related allowance recorded, Unpaid Principal Balance	62	68	64
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	63	70	65
With related allowance recorded, Recorded Investment	63	48	57
With related allowance recorded, Unpaid Principal Balance	63	48	57
Specific Allowance	19	18	18
With related allowance recorded, Average Recorded Investment	62	47	54
Consumer Marine [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	1	2	2
With no related allowance recorded, Unpaid Principal Balance	1	2	2
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	1	2	2
With related allowance recorded, Recorded Investment	40	48	43
With related allowance recorded, Unpaid Principal Balance	40	48	43
Specific Allowance	3	5	5
With related allowance recorded, Average Recorded Investment	40	49	45
Consumer Other [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	1	2	2
With no related allowance recorded, Unpaid Principal Balance	1	2	2
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	1	2	2
With related allowance recorded, Recorded Investment	42	49	45
With related allowance recorded, Unpaid Principal Balance	42	49	45
Specific Allowance	3	5	5
With related allowance recorded, Average Recorded Investment	42	50	47
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	85	95	89
With no related allowance recorded, Unpaid Principal Balance	85	95	90
With no related allowance recorded, Specific Allowance	0	0	0
With no related allowance recorded, Average Recorded Investment	86	98	97
With related allowance recorded, Recorded Investment	144	133	141
With related allowance recorded, Unpaid Principal Balance	144	133	141
Specific Allowance	27	28	28
With related allowance recorded, Average Recorded Investment	143	132	133
Consumer Other - Key Community Bank [Member]
Financing Receivable, Impaired [Line Items]
With related allowance recorded, Recorded Investment	3	3	4
With related allowance recorded, Unpaid Principal Balance	3	3	4
With related allowance recorded, Average Recorded Investment	3	3	3
Consumer Credit Card [Member]
Financing Receivable, Impaired [Line Items]
With related allowance recorded, Recorded Investment	3	4	4
With related allowance recorded, Unpaid Principal Balance	3	4	4
With related allowance recorded, Average Recorded Investment	3	4	4
Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
With related allowance recorded, Recorded Investment	2	1	2
With related allowance recorded, Unpaid Principal Balance	2	1	2
With related allowance recorded, Average Recorded Investment	$ 2	$ 1	$ 2

Asset Quality - Breakdown of No

Asset Quality - Breakdown of Nonperforming TDRs by Loans Category (Detail) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015USD ($)SecurityLoan	Jun. 30, 2014USD ($)SecurityLoan	Dec. 31, 2014USD ($)SecurityLoan
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	4,684	4,719	4,776
Pre-modification Outstanding Recorded Investment	$ 388	$ 365	$ 349
Post-modification Outstanding Recorded Investment	$ 300	$ 266	$ 270
Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	2,011	2,107	2,391
Pre-modification Outstanding Recorded Investment	$ 219	$ 198	$ 200
Post-modification Outstanding Recorded Investment	$ 170	$ 142	$ 157
Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	2,673	2,612	2,385
Pre-modification Outstanding Recorded Investment	$ 169	$ 167	$ 149
Post-modification Outstanding Recorded Investment	$ 130	$ 124	$ 113
Commercial, Financial and Agricultural [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	12	24	14
Pre-modification Outstanding Recorded Investment	$ 74	$ 20	$ 25
Post-modification Outstanding Recorded Investment	$ 58	$ 10	$ 23
Commercial, Financial and Agricultural [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	14	32	20
Pre-modification Outstanding Recorded Investment	$ 6	$ 7	$ 6
Post-modification Outstanding Recorded Investment	$ 3	$ 3	$ 3
Commercial Real Estate: Commercial Mortgage [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	12	11	10
Pre-modification Outstanding Recorded Investment	$ 32	$ 40	$ 38
Post-modification Outstanding Recorded Investment	$ 8	$ 14	$ 13
Commercial Real Estate: Commercial Mortgage [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	4	1
Pre-modification Outstanding Recorded Investment	$ 2	$ 17	$ 2
Post-modification Outstanding Recorded Investment	$ 1	$ 9	$ 1
Commercial Real Estate: Construction [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan		3	1
Pre-modification Outstanding Recorded Investment		$ 15	$ 5
Post-modification Outstanding Recorded Investment		$ 2
Commercial Real Estate Loans [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	12	14	11
Pre-modification Outstanding Recorded Investment	$ 32	$ 55	$ 43
Post-modification Outstanding Recorded Investment	$ 8	$ 16	$ 13
Commercial Real Estate Loans [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	4	1
Pre-modification Outstanding Recorded Investment	$ 2	$ 17	$ 2
Post-modification Outstanding Recorded Investment	$ 1	$ 9	$ 1
Commercial Loans [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	24	38	25
Pre-modification Outstanding Recorded Investment	$ 106	$ 75	$ 68
Post-modification Outstanding Recorded Investment	$ 66	$ 26	$ 36
Commercial Loans [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	15	36	21
Pre-modification Outstanding Recorded Investment	$ 8	$ 24	$ 8
Post-modification Outstanding Recorded Investment	$ 4	$ 12	$ 4
Real Estate - Residential Mortgage [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	352	521	453
Pre-modification Outstanding Recorded Investment	$ 21	$ 34	$ 27
Post-modification Outstanding Recorded Investment	$ 21	$ 34	$ 27
Real Estate - Residential Mortgage [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	491	287	381
Pre-modification Outstanding Recorded Investment	$ 36	$ 21	$ 29
Post-modification Outstanding Recorded Investment	$ 36	$ 21	$ 29
Home Equity: Key Community Bank [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1,076	1,086	1,184
Pre-modification Outstanding Recorded Investment	$ 77	$ 68	$ 79
Post-modification Outstanding Recorded Investment	$ 70	$ 64	$ 72
Home Equity: Key Community Bank [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	807	759	674
Pre-modification Outstanding Recorded Investment	$ 48	$ 43	$ 41
Post-modification Outstanding Recorded Investment	$ 42	$ 39	$ 36
Home Equity: Other [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	117	126	158
Pre-modification Outstanding Recorded Investment	$ 3	$ 4	$ 4
Post-modification Outstanding Recorded Investment	$ 3	$ 3	$ 4
Home Equity: Other [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	331	322	310
Pre-modification Outstanding Recorded Investment	$ 10	$ 10	$ 9
Post-modification Outstanding Recorded Investment	$ 8	$ 8	$ 8
Home Equity Loans [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1,193	1,212	1,342
Pre-modification Outstanding Recorded Investment	$ 80	$ 72	$ 83
Post-modification Outstanding Recorded Investment	$ 73	$ 67	$ 76
Home Equity Loans [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1,138	1,081	984
Pre-modification Outstanding Recorded Investment	$ 58	$ 53	$ 50
Post-modification Outstanding Recorded Investment	$ 50	$ 47	$ 44
Consumer Other - Key Community Bank [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	28	33	37
Pre-modification Outstanding Recorded Investment	$ 1	$ 1	$ 2
Post-modification Outstanding Recorded Investment	$ 1	$ 1	$ 1
Consumer Other - Key Community Bank [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	48	54	45
Pre-modification Outstanding Recorded Investment	$ 2	$ 2	$ 2
Post-modification Outstanding Recorded Investment	$ 2	$ 2	$ 2
Consumer Credit Card Financing Receivable [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	289	60	290
Pre-modification Outstanding Recorded Investment	$ 2		$ 2
Post-modification Outstanding Recorded Investment	$ 2		$ 2
Consumer Credit Card Financing Receivable [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	489	653	514
Pre-modification Outstanding Recorded Investment	$ 3	$ 5	$ 4
Post-modification Outstanding Recorded Investment	$ 2	$ 3	$ 2
Consumer Marine [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	104	207	206
Pre-modification Outstanding Recorded Investment	$ 8	$ 15	$ 17
Post-modification Outstanding Recorded Investment	$ 7	$ 13	$ 14
Consumer Marine [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	419	428	373
Pre-modification Outstanding Recorded Investment	$ 60	$ 60	$ 54
Post-modification Outstanding Recorded Investment	$ 34	$ 37	$ 31
Other Consumer [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	21	36	38
Pre-modification Outstanding Recorded Investment	$ 1	$ 1	$ 1
Post-modification Outstanding Recorded Investment		$ 1	$ 1
Other Consumer [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	73	73	67
Pre-modification Outstanding Recorded Investment	$ 2	$ 2	$ 2
Post-modification Outstanding Recorded Investment	$ 2	$ 2	$ 1
Consumer Other [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	125	243	244
Pre-modification Outstanding Recorded Investment	$ 9	$ 16	$ 18
Post-modification Outstanding Recorded Investment	$ 7	$ 14	$ 15
Consumer Other [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	492	501	440
Pre-modification Outstanding Recorded Investment	$ 62	$ 62	$ 56
Post-modification Outstanding Recorded Investment	$ 36	$ 39	$ 32
Consumer Loans [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1,987	2,069	2,366
Pre-modification Outstanding Recorded Investment	$ 113	$ 123	$ 132
Post-modification Outstanding Recorded Investment	$ 104	$ 116	$ 121
Consumer Loans [Member] | Prior-Year Accruing [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	2,658	2,576	2,364
Pre-modification Outstanding Recorded Investment	$ 161	$ 143	$ 141
Post-modification Outstanding Recorded Investment	$ 126	$ 112	$ 109

Asset Quality - Post-Modificati

Asset Quality - Post-Modification Outstanding Recorded Investment by Concession Type for Our Commercial Accruing and Nonaccruing TDRs (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Modifications [Line Items]
Total commercial and consumer TDRs	$ 300	$ 270	$ 266
Total Loans	58,264	57,381	55,600
Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Interest rate reduction	60	13	27
Forgiveness of principal	2	2	5
Other	8	25	6
Total	70	40	38
Total Loans	42,423	41,381	39,561
Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Interest rate reduction	142	140	139
Forgiveness of principal	4	4	4
Other	84	86	85
Total	230	230	228
Total Loans	$ 15,841	$ 16,000	$ 16,039

Asset Quality - Post-Modifica59

Asset Quality - Post-Modification Outstanding Recorded Investment by Concession Type for Our Commercial Accruing and Nonaccruing TDRs (Parenthetical) (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Receivables [Abstract]
Additional funds to borrowers related to lending related commitments	$ 8	$ 5	$ 1

Asset Quality - Past Due Loans

Asset Quality - Past Due Loans Including Current Loans (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 57,586	$ 56,619	$ 54,832
30-59 Days Past Due	135	147	200
60-89 Days Past Due	46	88	74
90 and Greater Days Past Due	66	96	83
Nonperforming Loans	419	418	396
Total Past Due and Nonperforming Loans	666	749	753
Purchased Credit Impaired	12	13	15
Loans Outstanding	58,264	57,381	55,600
Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	29,137	27,858	26,212
30-59 Days Past Due	26	19	52
60-89 Days Past Due	5	14	11
90 and Greater Days Past Due	17	32	15
Nonperforming Loans	100	59	37
Total Past Due and Nonperforming Loans	148	124	115
Loans Outstanding	29,285	27,982	26,327
Commercial Real Estate: Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	7,823	7,981	7,855
30-59 Days Past Due	6	6	18
60-89 Days Past Due	2	10	15
90 and Greater Days Past Due	17	16	19
Nonperforming Loans	26	34	38
Total Past Due and Nonperforming Loans	51	66	90
Purchased Credit Impaired			1
Loans Outstanding	7,874	8,047	7,946
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,242	1,084	1,029
30-59 Days Past Due		2	2
60-89 Days Past Due			2
90 and Greater Days Past Due		1	5
Nonperforming Loans	12	13	9
Total Past Due and Nonperforming Loans	12	16	18
Loans Outstanding	1,254	1,100	1,047
Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	9,065	9,065	8,884
30-59 Days Past Due	6	8	20
60-89 Days Past Due	2	10	17
90 and Greater Days Past Due	17	17	24
Nonperforming Loans	38	47	47
Total Past Due and Nonperforming Loans	63	82	108
Purchased Credit Impaired			1
Loans Outstanding	9,128	9,147	8,993
Commercial Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,967	4,172	4,186
30-59 Days Past Due	21	30	32
60-89 Days Past Due	3	21	4
90 and Greater Days Past Due	2	11	4
Nonperforming Loans	18	18	15
Total Past Due and Nonperforming Loans	43	80	55
Loans Outstanding	4,010	4,252	4,241
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	42,169	41,095	39,282
30-59 Days Past Due	52	57	104
60-89 Days Past Due	10	45	32
90 and Greater Days Past Due	36	60	43
Nonperforming Loans	156	124	99
Total Past Due and Nonperforming Loans	254	286	278
Purchased Credit Impaired			1
Loans Outstanding	42,423	41,381	39,561
Real Estate - Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,155	2,111	2,061
30-59 Days Past Due	13	12	16
60-89 Days Past Due	3	7	6
90 and Greater Days Past Due	3	4	4
Nonperforming Loans	67	79	89
Total Past Due and Nonperforming Loans	86	102	115
Purchased Credit Impaired	11	12	13
Loans Outstanding	2,252	2,225	2,189
Home Equity: Key Community Bank [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	10,043	10,098	10,115
30-59 Days Past Due	43	46	46
60-89 Days Past Due	22	22	22
90 and Greater Days Past Due	11	14	17
Nonperforming Loans	176	185	178
Total Past Due and Nonperforming Loans	252	267	263
Purchased Credit Impaired	1	1	1
Loans Outstanding	10,296	10,366	10,379
Home Equity: Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	221	249	281
30-59 Days Past Due	4	5	5
60-89 Days Past Due	2	2	2
90 and Greater Days Past Due	1	1	1
Nonperforming Loans	8	10	11
Total Past Due and Nonperforming Loans	15	18	19
Loans Outstanding	236	267	300
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	10,264	10,347	10,396
30-59 Days Past Due	47	51	51
60-89 Days Past Due	24	24	24
90 and Greater Days Past Due	12	15	18
Nonperforming Loans	184	195	189
Total Past Due and Nonperforming Loans	267	285	282
Purchased Credit Impaired	1	1	1
Loans Outstanding	10,532	10,633	10,679
Consumer Other - Key Community Bank [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,577	1,541	1,493
30-59 Days Past Due	8	9	9
60-89 Days Past Due	3	3	4
90 and Greater Days Past Due	6	5	6
Nonperforming Loans	1	2	2
Total Past Due and Nonperforming Loans	18	19	21
Loans Outstanding	1,595	1,560	1,514
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	735	733	698
30-59 Days Past Due	5	6	6
60-89 Days Past Due	3	4	4
90 and Greater Days Past Due	8	9	9
Nonperforming Loans	2	2	1
Total Past Due and Nonperforming Loans	18	21	20
Loans Outstanding	753	754	718
Consumer Marine [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	651	746	855
30-59 Days Past Due	10	11	13
60-89 Days Past Due	3	5	3
90 and Greater Days Past Due	1	2	2
Nonperforming Loans	8	15	15
Total Past Due and Nonperforming Loans	22	33	33
Loans Outstanding	673	779	888
Consumer Others [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	35	46	47
30-59 Days Past Due		1	1
60-89 Days Past Due			1
90 and Greater Days Past Due		1	1
Nonperforming Loans	1	1	1
Total Past Due and Nonperforming Loans	1	3	4
Loans Outstanding	36	49	51
Consumer Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	686	792	902
30-59 Days Past Due	10	12	14
60-89 Days Past Due	3	5	4
90 and Greater Days Past Due	1	3	3
Nonperforming Loans	9	16	16
Total Past Due and Nonperforming Loans	23	36	37
Loans Outstanding	709	828	939
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	15,417	15,524	15,550
30-59 Days Past Due	83	90	96
60-89 Days Past Due	36	43	42
90 and Greater Days Past Due	30	36	40
Nonperforming Loans	263	294	297
Total Past Due and Nonperforming Loans	412	463	475
Purchased Credit Impaired	12	13	14
Loans Outstanding	$ 15,841	$ 16,000	$ 16,039

Asset Quality - Financing Recei

Asset Quality - Financing Receivable Credit Quality Indicators (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 58,264	$ 57,381	$ 55,600
Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	29,285	$ 27,982	26,327
Commercial, Financial and Agricultural [Member] | AAA-AA [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	396		364
Commercial, Financial and Agricultural [Member] | A [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,189		1,091
Commercial, Financial and Agricultural [Member] | BBB-BB [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	25,931		23,534
Commercial, Financial and Agricultural [Member] | B [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	653		545
Commercial, Financial and Agricultural [Member] | CCC-C [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,116		793
RE Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,874		7,945
RE Commercial [Member] | AAA-AA [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3		3
RE Commercial [Member] | A [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4		1
RE Commercial [Member] | BBB-BB [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,318		7,412
RE Commercial [Member] | B [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	278		287
RE Commercial [Member] | CCC-C [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	271		242
Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,254		1,047
Commercial Real Estate Construction Financing Receivable [Member] | AAA-AA [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1		1
Commercial Real Estate Construction Financing Receivable [Member] | A [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans			1
Commercial Real Estate Construction Financing Receivable [Member] | BBB-BB [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,084		907
Commercial Real Estate Construction Financing Receivable [Member] | B [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	138		99
Commercial Real Estate Construction Financing Receivable [Member] | CCC-C [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	31		39
Commercial Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,010		4,241
Commercial Leases [Member] | AAA-AA [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	504		712
Commercial Leases [Member] | A [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	484		382
Commercial Leases [Member] | BBB-BB [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,853		2,968
Commercial Leases [Member] | B [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	103		99
Commercial Leases [Member] | CCC-C [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	66		80
Commercial Loan Portfolios [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	42,423		39,560
Commercial Loan Portfolios [Member] | AAA-AA [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	904		1,080
Commercial Loan Portfolios [Member] | A [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,677		1,475
Commercial Loan Portfolios [Member] | BBB-BB [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	37,186		34,821
Commercial Loan Portfolios [Member] | B [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,172		1,030
Commercial Loan Portfolios [Member] | CCC-C [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 1,484		$ 1,154

Asset Quality - Credit Risk Pro

Asset Quality - Credit Risk Profile by Regulatory Classifications (Detail) - Residential - Prime, Financing Receivable [Member] - USD ($) $ in Millions	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Total	$ 12,772	$ 12,854
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12,506	12,554
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 266	$ 300

Asset Quality - Credit Risk P63

Asset Quality - Credit Risk Profile Based on Payment Activity (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	$ 58,264	$ 57,381	$ 55,600
Consumer Other - Key Community Bank [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	1,595	1,560	1,514
Consumer Other - Key Community Bank [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	1,594		1,512
Consumer Other - Key Community Bank [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	1		2
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	753	754	718
Consumer Credit Card Financing Receivable [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	751		717
Consumer Credit Card Financing Receivable [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	2		1
Consumer Marine [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	673	779	888
Consumer Marine [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	665		873
Consumer Marine [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	8		15
Consumer Others [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	36	49	51
Consumer Others [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	35		50
Consumer Others [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	1		1
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	15,841	$ 16,000	16,039
Consumer Loans [Member] | Credit Risk Profile [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	3,057		3,171
Consumer Loans [Member] | Performing [Member] | Credit Risk Profile [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	3,045		3,152
Consumer Loans [Member] | Nonperforming [Member] | Credit Risk Profile [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit risk profile based on payment	$ 12		$ 19

Asset Quality - Summary of Allo

Asset Quality - Summary of Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Beginning balance			$ 823	$ 887
Charge-offs			(115)	(137)
Recoveries			43	71
Provision for loan and lease losses from continuing operations	$ 41	$ 12	76	16
Ending balance	818	846	818	846
Continuing Operations [Member]
Financing Receivable, Recorded Investment [Line Items]
Beginning balance	794	834	794	848
Charge-offs	(52)	(56)	(99)	(113)
Recoveries	16	26	35	63
Net loans and leases charged off	(36)	(30)	(64)	(50)
Provision for loan and lease losses from continuing operations	37	10	66	16
Foreign currency translation adjustment	1
Ending balance	$ 796	$ 814	$ 796	$ 814

Asset Quality - Changes in Allo

Asset Quality - Changes in Allowance for Loan and Lease Losses by Loan Category (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			$ 823	$ 887	$ 887
Provision			67	25	10
Charge-offs			(115)	(137)
Recoveries			43	71
Ending balance	$ 818	$ 846	818	846	823
Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	794	834	794	848	848
Provision			66	16
Charge-offs	(52)	(56)	(99)	(113)
Recoveries	16	26	35	63
Ending balance	796	814	796	814	794
Continuing Operations [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			391	362	362
Provision			49	13
Charge-offs			(33)	(23)
Recoveries			11	21
Ending balance	418	373	418	373	391
Continuing Operations [Member] | Commercial Real Estate: Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			148	165	165
Provision			(4)	(5)
Charge-offs			(2)	(3)
Recoveries			2	2
Ending balance	144	159	144	159	148
Continuing Operations [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			28	32	32
Provision			3	(11)
Charge-offs			(1)	(2)
Recoveries			1	15
Ending balance	31	34	31	34	28
Continuing Operations [Member] | Commercial Lease Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			56	62	62
Provision			(5)	(3)
Charge-offs			(3)	(5)
Recoveries			5	6
Ending balance	53	60	53	60	56
Continuing Operations [Member] | Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			623	621	621
Provision			43	(6)
Charge-offs			(39)	(33)
Recoveries			19	44
Ending balance	646	626	646	626	623
Continuing Operations [Member] | Real Estate - Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			23	37	37
Provision			(1)	(9)
Charge-offs			(3)	(5)
Recoveries			1	2
Ending balance	20	25	20	25	23
Continuing Operations [Member] | Home Equity: Key Community Bank [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			66	84	84
Provision			3	9
Charge-offs			(15)	(20)
Recoveries			3	4
Ending balance	57	77	57	77	66
Continuing Operations [Member] | Home Equity: Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			5	11	11
Provision				1
Charge-offs			(3)	(6)
Recoveries			2	3
Ending balance	4	9	4	9	5
Continuing Operations [Member] | Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			71	95	95
Provision			3	10
Charge-offs			(18)	(26)
Recoveries			5	7
Ending balance	61	86	61	86	71
Continuing Operations [Member] | Consumer Other - Key Community Bank [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			22	29	29
Provision			7	8
Charge-offs			(12)	(16)
Recoveries			4	3
Ending balance	21	24	21	24	22
Continuing Operations [Member] | Credit Cards [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			33	34	34
Provision			13	13
Charge-offs			(16)	(18)
Recoveries			1	1
Ending balance	31	30	31	30	33
Continuing Operations [Member] | Consumer Marine [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			21	29	29
Provision				1
Charge-offs			(10)	(14)
Recoveries			5	5
Ending balance	16	21	16	21	21
Continuing Operations [Member] | Consumer Others [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			1	3	3
Provision			1	(1)
Charge-offs			(1)	(1)
Recoveries				1
Ending balance	1	2	1	2	1
Continuing Operations [Member] | Consumer Other - Key Corporate Bank [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			22	32	32
Provision			1
Charge-offs			(11)	(15)
Recoveries			5	6
Ending balance	17	23	17	23	22
Continuing Operations [Member] | Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			171	227	227
Provision			23	22
Charge-offs			(60)	(80)
Recoveries			16	19
Ending balance	150	188	150	188	171
Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance			29	39	39
Provision			1	9
Charge-offs				(24)
Charge-offs			(16)
Recoveries			8	8
Ending balance	$ 22	$ 32	$ 22	$ 32	$ 29

Asset Quality - Changes in Al66

Asset Quality - Changes in Allowance for Loan and Lease Losses by Loan Category (Parenthetical) (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Receivables [Abstract]
Provision/Credit for losses on lending-related commitments	$ 67	$ 25	$ 10

Asset Quality - Allowance for L

Asset Quality - Allowance for Loan and Lease Losses and Corresponding Loan Balances (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	$ 58,264	$ 57,381	$ 55,600
Purchase Credit Impairment	12	13	15
Individually Evaluated for Impairment Allowance, Total ALLL - Including Discontinued Operations	53		34
Collectively Evaluated for Impairment Allowance, Total ALLL - Including Discontinued Operations	764		811
Purchased Credit Impaired Allowance, Total ALLL - Including Discontinued Operations	1		1
Loans Outstanding, Total ALLL - Including Discontinued Operations	60,226		59,762
Individually Evaluated for Impairment Outstanding, Total ALLL - Including Discontinued Operations	353		293
Collectively Evaluated for Impairment Outstanding, Total ALLL - Including Discontinued Operations	59,861		59,454
Purchased Credit Impaired Outstanding, Total ALLL - Including Discontinued Operations	12		15
Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	1	1	2
Collectively Evaluated for Impairment Allowance	21	28	30
Loans Outstanding	1,962	2,104	2,242
Individually Evaluated for Impairment Outstanding	19	17	17
Collectively Evaluated for Impairment Outstanding	1,943	2,278
Loans Outstanding		2,295	4,162
Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	52	40	32
Collectively Evaluated for Impairment Allowance	743	753	781
Purchase Credit Impairment Allowance	1	1	1
Loans Outstanding	58,264	57,381	55,600
Individually Evaluated for Impairment Outstanding	334	302	276
Collectively Evaluated for Impairment Outstanding	57,918	57,066	55,309
Purchase Credit Impairment	12	13	15
Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	29,285	27,982	26,327
Commercial, Financial and Agricultural [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	24	9	3
Collectively Evaluated for Impairment Allowance	394	382	370
Loans Outstanding	29,285	27,982	26,327
Individually Evaluated for Impairment Outstanding	82	43	17
Collectively Evaluated for Impairment Outstanding	29,203	27,939	26,310
Commercial Real Estate: Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	7,874	8,047	7,946
Commercial Real Estate: Commercial Mortgage [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	1	2	1
Collectively Evaluated for Impairment Allowance	143	146	158
Loans Outstanding	7,874	8,047	7,946
Individually Evaluated for Impairment Outstanding	16	21	25
Collectively Evaluated for Impairment Outstanding	7,858	8,025	7,920
Purchase Credit Impairment		1	1
Commercial Real Estate: Construction [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance		1
Collectively Evaluated for Impairment Allowance	31	27	34
Loans Outstanding	1,254	1,100	1,047
Individually Evaluated for Impairment Outstanding	7	8	6
Collectively Evaluated for Impairment Outstanding	1,247	1,092	1,041
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	9,128	9,147	8,993
Commercial Real Estate Loans [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	1	3	1
Collectively Evaluated for Impairment Allowance	174	173	192
Loans Outstanding	9,128	9,147	8,993
Individually Evaluated for Impairment Outstanding	23	29	31
Collectively Evaluated for Impairment Outstanding	9,105	9,117	8,961
Purchase Credit Impairment		1	1
Commercial Lease Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	4,010	4,252	4,241
Commercial Lease Financing [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively Evaluated for Impairment Allowance	53	56	60
Loans Outstanding	4,010	4,252	4,241
Collectively Evaluated for Impairment Outstanding	4,010	4,252	4,241
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	42,423	41,381	39,561
Commercial Loans [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	25	12	4
Collectively Evaluated for Impairment Allowance	621	611	622
Loans Outstanding	42,423	41,381	39,561
Individually Evaluated for Impairment Outstanding	105	72	48
Collectively Evaluated for Impairment Outstanding	42,318	41,308	39,512
Purchase Credit Impairment		1	1
Real Estate - Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	2,252	2,225	2,189
Real Estate - Residential Mortgage [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	5	5	5
Collectively Evaluated for Impairment Allowance	14	17	19
Purchase Credit Impairment Allowance	1	1	1
Loans Outstanding	2,252	2,225	2,189
Individually Evaluated for Impairment Outstanding	56	55	55
Collectively Evaluated for Impairment Outstanding	2,185	2,159	2,121
Purchase Credit Impairment	11	11	13
Home Equity: Key Community Bank [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	10,296	10,366	10,379
Home Equity: Key Community Bank [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	17	16	15
Collectively Evaluated for Impairment Allowance	40	50	62
Loans Outstanding	10,296	10,366	10,379
Individually Evaluated for Impairment Outstanding	112	108	103
Collectively Evaluated for Impairment Outstanding	10,183	10,257	10,275
Purchase Credit Impairment	1	1	1
Home Equity: Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	236	267	300
Home Equity: Other [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	2	2	3
Collectively Evaluated for Impairment Allowance	2	3	6
Loans Outstanding	236	267	300
Individually Evaluated for Impairment Outstanding	12	12	12
Collectively Evaluated for Impairment Outstanding	224	255	288
Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	10,532	10,633	10,679
Home Equity Loans [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	19	18	18
Collectively Evaluated for Impairment Allowance	42	53	68
Loans Outstanding	10,532	10,633	10,679
Individually Evaluated for Impairment Outstanding	124	120	115
Collectively Evaluated for Impairment Outstanding	10,407	10,512	10,563
Purchase Credit Impairment	1	1	1
Consumer Other - Key Community Bank [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	1,595	1,560	1,514
Consumer Other - Key Community Bank [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively Evaluated for Impairment Allowance	21	22	24
Loans Outstanding	1,595	1,560	1,514
Individually Evaluated for Impairment Outstanding	3	4	3
Collectively Evaluated for Impairment Outstanding	1,592	1,556	1,511
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	753	754	718
Consumer Credit Card Financing Receivable [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively Evaluated for Impairment Allowance	31	33	30
Loans Outstanding	753	754	718
Individually Evaluated for Impairment Outstanding	3	4	4
Collectively Evaluated for Impairment Outstanding	750	750	714
Consumer Marine [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	673	779	888
Consumer Marine [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	3	5	5
Collectively Evaluated for Impairment Allowance	13	16	16
Loans Outstanding	673	779	888
Individually Evaluated for Impairment Outstanding	41	45	50
Collectively Evaluated for Impairment Outstanding	632	734	838
Consumer Others [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	36	49	51
Consumer Others [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Collectively Evaluated for Impairment Allowance	1	1	2
Loans Outstanding	36	49	51
Individually Evaluated for Impairment Outstanding	2	2	1
Collectively Evaluated for Impairment Outstanding	34	47	50
Consumer Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	709	828	939
Consumer Other [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	3	5	5
Collectively Evaluated for Impairment Allowance	14	17	18
Loans Outstanding	709	828	939
Individually Evaluated for Impairment Outstanding	43	47	51
Collectively Evaluated for Impairment Outstanding	666	781	888
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Outstanding	15,841	16,000	16,039
Consumer Loans [Member] | Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually Evaluated for Impairment Allowance	27	28	28
Collectively Evaluated for Impairment Allowance	122	142	159
Purchase Credit Impairment Allowance	1	1	1
Loans Outstanding	15,841	16,000	16,039
Individually Evaluated for Impairment Outstanding	229	230	228
Collectively Evaluated for Impairment Outstanding	15,600	15,758	15,797
Purchase Credit Impairment	$ 12	$ 12	$ 14

Asset Quality - Allowance for68

Asset Quality - Allowance for Loan and Lease Losses and Corresponding Loan Balances (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2014	Jun. 30, 2014
Receivables [Abstract]
Loans carried at fair value	$ 191	$ 1,900

Asset Quality - Changes in Liab

Asset Quality - Changes in Liability for Credit Losses on Lending Related Commitments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Receivables [Abstract]
Balance at beginning of period	$ 41	$ 35	$ 35	$ 37
Provision (credit) for losses on lending-related commitments	4	2	10	0
Balance at end of period	$ 45	$ 37	$ 45	$ 37

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Direct and Indirect Investments, Related Unfunded Commitments and Financial Support Provided (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Principal Investments [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Fair Value	$ 352		$ 352
Unfunded Commitments	54		54
Funded Commitments	3	$ 4	5	$ 6
Funded Other		1	2	2
Principal Investments [Member] | Direct Investments [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Fair Value	70		70
Funded Other		1	2	2
Principal Investments [Member] | Indirect Investments [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Fair Value	282		282
Unfunded Commitments	54		54
Funded Commitments	3	$ 4	5	$ 6
Indirect Investments [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Fair Value	9		9
Unfunded Commitments	1		1
Indirect Investments [Member] | Passive Funds [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Fair Value	9		9
Unfunded Commitments	$ 1		$ 1

Fair Value Measurements - Fai71

Fair Value Measurements - Fair Value of Direct and Indirect Investments, Related Unfunded Commitments and Financial Support Provided (Parenthetical) (Detail)	6 Months Ended
	Jun. 30, 2015
Minimum [Member] | Indirect Investments [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Liquidation period of funds	1 year
Minimum [Member] | Passive Funds [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Liquidation period of funds	1 year
Maximum [Member] | Indirect Investments [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Liquidation period of funds	9 years
Maximum [Member] | Passive Funds [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Liquidation period of funds	4 years

Fair Value Measurements - Fai72

Fair Value Measurements - Fair Value of Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	$ 674	$ 750	$ 890
Securities available for sale	14,244	13,360	12,224
Derivative asset netting adjustments	(834)	(1,034)	(677)
Total derivative assets	536	609	549
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liability netting adjustments	(486)	(542)	(443)
Total derivative liabilities	560	784	451
States and Political Subdivisions [Member]
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	19	23	31
Collateralized Mortgage Obligations [Member]
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	11,751	11,270	9,866
Other Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	22	32	22
Other Mortgage-Backed Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	2,452	2,035	2,305
Recurring [Member]
ASSETS MEASURED ON A RECURRING BASIS
Commercial loans	8	2	3
Total trading account assets	674	750	890
Securities available for sale	14,244	13,360	12,224
Total other investments	361	416	561
Derivative assets	1,370	1,643	1,226
Derivative asset netting adjustments	(834)	(1,034)	(677)
Total derivative assets	536	609	549
Accrued income and other assets	2		4
Total assets at fair value	15,817	15,135	14,228
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	1,046	1,326	894
Derivative liability netting adjustments	(486)	(542)	(443)
Total derivative liabilities	560	784	451
Accrued expense and other liabilities	2		4
Total liabilities on a recurring basis at fair value	1,090	1,207	976
Recurring [Member] | Trading Account Assets [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	666	748	887
Recurring [Member] | U.S. Treasury, Agencies and Corporations [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	580	555	660
Recurring [Member] | States and Political Subdivisions [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	23	38	33
Securities available for sale	19	23	31
Recurring [Member] | Collateralized Mortgage Obligations [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities			19
Securities available for sale	11,751	11,270	9,866
Recurring [Member] | Other Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	26	31	31
Securities available for sale	22	32	22
Recurring [Member] | Principal Investments Direct [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	70	104	146
Recurring [Member] | Principal Investments Indirect [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	282	302	399
Recurring [Member] | Principal Investments [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	352	406	545
Recurring [Member] | Equity and Mezzanine Investments Indirect [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	9	10	16
Recurring [Member] | Private Equity and Mezzanine Investments [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	9	10	16
Recurring [Member] | Other Mortgage-Backed Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	37	124	144
Securities available for sale	2,452	2,035	2,305
Recurring [Member] | Short Positions [Member]
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	528	423	521
Recurring [Member] | Interest Rate [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	856	937	984
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	568	644	653
Recurring [Member] | Foreign Exchange [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	131	93	56
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	108	81	56
Recurring [Member] | Commodity [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	379	608	182
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	365	594	177
Recurring [Member] | Credit [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	4	5	4
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	5	7	8
Level 1 [Member] | Recurring [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account assets	2	2	5
Securities available for sale	12	22	22
Total other investments	1	2
Derivative assets	121	91	51
Total derivative assets	121	91	51
Total assets at fair value	135	117	78
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	100	77	52
Total derivative liabilities	100	77	52
Total liabilities on a recurring basis at fair value	101	77	53
Level 1 [Member] | Recurring [Member] | Trading Account Assets [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	2	2	5
Level 1 [Member] | Recurring [Member] | Other Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	2	2	5
Securities available for sale	12	22	22
Level 1 [Member] | Recurring [Member] | Principal Investments Direct [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	1	2
Level 1 [Member] | Recurring [Member] | Principal Investments [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	1	2
Level 1 [Member] | Recurring [Member] | Short Positions [Member]
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	1		1
Level 1 [Member] | Recurring [Member] | Foreign Exchange [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	121	91	51
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	100	77	52
Level 2 [Member] | Recurring [Member]
ASSETS MEASURED ON A RECURRING BASIS
Commercial loans	8	2	3
Total trading account assets	672	748	885
Securities available for sale	14,222	13,328	12,202
Derivative assets	1,230	1,536	1,150
Total derivative assets	1,230	1,536	1,150
Accrued income and other assets	2		4
Total assets at fair value	16,126	15,612	14,241
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	946	1,248	841
Total derivative liabilities	946	1,248	841
Accrued expense and other liabilities	2		4
Total liabilities on a recurring basis at fair value	1,475	1,671	1,365
Level 2 [Member] | Recurring [Member] | Trading Account Assets [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	664	746	882
Level 2 [Member] | Recurring [Member] | U.S. Treasury, Agencies and Corporations [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	580	555	660
Level 2 [Member] | Recurring [Member] | States and Political Subdivisions [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	23	38	33
Securities available for sale	19	23	31
Level 2 [Member] | Recurring [Member] | Collateralized Mortgage Obligations [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities			19
Securities available for sale	11,751	11,270	9,866
Level 2 [Member] | Recurring [Member] | Other Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	24	29	26
Level 2 [Member] | Recurring [Member] | Other Mortgage-Backed Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	37	124	144
Securities available for sale	2,452	2,035	2,305
Level 2 [Member] | Recurring [Member] | Short Positions [Member]
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	527	423	520
Level 2 [Member] | Recurring [Member] | Interest Rate [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	840	924	964
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	568	644	653
Level 2 [Member] | Recurring [Member] | Foreign Exchange [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	10	2	5
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	8	4	4
Level 2 [Member] | Recurring [Member] | Commodity [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	379	608	181
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	365	594	177
Level 2 [Member] | Recurring [Member] | Credit [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	1	2
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities	5	6	7
Level 3 [Member] | Recurring [Member]
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	10	10
Total other investments	361	414	561
Derivative assets	19	16	25
Total derivative assets	19	16	25
Total assets at fair value	390	440	586
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities		1	1
Total derivative liabilities		1	1
Total liabilities on a recurring basis at fair value		1	1
Level 3 [Member] | Recurring [Member] | Other Securities [Member]
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	10	10
Level 3 [Member] | Recurring [Member] | Principal Investments Direct [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	70	102	146
Level 3 [Member] | Recurring [Member] | Principal Investments Indirect [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	282	302	399
Level 3 [Member] | Recurring [Member] | Principal Investments [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	352	404	545
Level 3 [Member] | Recurring [Member] | Equity and Mezzanine Investments Indirect [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	9	10	16
Level 3 [Member] | Recurring [Member] | Private Equity and Mezzanine Investments [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	9	10	16
Level 3 [Member] | Recurring [Member] | Interest Rate [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	16	13	20
Level 3 [Member] | Recurring [Member] | Commodity [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets			1
Level 3 [Member] | Recurring [Member] | Credit [Member]
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	$ 3	3	4
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities		$ 1	$ 1

Fair Value Measurements - Chang

Fair Value Measurements - Change in Fair Values of Level 3 Financial Instruments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Securities Available for Sale [Member] | Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 10		$ 10
Ending Balance	10		10
Other Investments [Member] | Principal Investments Direct [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	73	$ 141	102	$ 141
Gains (Losses) Included in Earnings	3	7	16	11
Purchases	1	1	2	1
Sales	(7)	(3)	(50)	(7)
Ending Balance	70	146	70	146
Unrealized Gains (Losses) Included in Earnings	(3)	14	(3)	20
Other Investments [Member] | Principal Investments Indirect [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	301	403	302	413
Gains (Losses) Included in Earnings	8	20	25	40
Purchases	3	4	4	5
Sales	(30)	(28)	(49)	(59)
Ending Balance	282	399	282	399
Unrealized Gains (Losses) Included in Earnings	(7)	3	(15)	12
Other Investments [Member] | Equity and Mezzanine Investments Direct [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Gains (Losses) Included in Earnings			2
Sales			(2)
Unrealized Gains (Losses) Included in Earnings			2
Other Investments [Member] | Equity and Mezzanine Investments Indirect [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	9	20	10	23
Gains (Losses) Included in Earnings	7		6	(1)
Sales	(7)		(7)
Settlements		(4)		(6)
Ending Balance	9	16	9	16
Unrealized Gains (Losses) Included in Earnings	7		6	(1)
Interest Rate [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	10	22	13	25
Gains (Losses) Included in Earnings	(3)	1	(1)	2
Purchases	1	1	1	3
Sales		(1)		(2)
Transfers into Level 3	8	2	8	5
Transfers out of Level 3		(5)	(5)	(13)
Ending Balance	16	20	16	20
Commodity [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers into Level 3		1		1
Ending Balance		1		1
Credit [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning Balance	2	3	2	3
Gains (Losses) Included in Earnings	(1)	(3)	(4)	(5)
Settlements	2	3	5	5
Ending Balance	$ 3	$ 3	$ 3	$ 3

Fair Value Measurements - Cha74

Fair Value Measurements - Change in Fair Values of Level 3 Financial Instruments (Parenthetical) (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Fair Value Disclosures [Abstract]
Issuance of financial instrument	$ 0	$ 0

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
ASSETS MEASURED ON A NONRECURRING BASIS
Loans held for sale	$ 0	$ 0	$ 0
Nonrecurring [Member]
ASSETS MEASURED ON A NONRECURRING BASIS
Impaired loans	8,000,000	5,000,000	6,000,000
Loans held for sale	0	0	0
Accrued income and other assets	5,000,000	7,000,000	5,000,000
Total assets at fair value	13,000,000	12,000,000	11,000,000
Level 1 [Member] | Nonrecurring [Member]
ASSETS MEASURED ON A NONRECURRING BASIS
Loans held for sale	0	0	0
Level 2 [Member] | Nonrecurring [Member]
ASSETS MEASURED ON A NONRECURRING BASIS
Loans held for sale	0	0	0
Level 3 [Member] | Nonrecurring [Member]
ASSETS MEASURED ON A NONRECURRING BASIS
Impaired loans	8,000,000	5,000,000	6,000,000
Loans held for sale	0	0	0
Accrued income and other assets	15,000,000	7,000,000	5,000,000
Total assets at fair value	$ 13,000,000	$ 12,000,000	$ 11,000,000

Fair Value Measurements - Ass76

Fair Value Measurements - Assets Measured at Fair Value on Nonrecurring Basis (Parenthetical) (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Nonrecurring [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Transfer of commercial and consumer loans from held-for-sale to held-to-maturity, current fair value	$ 7	$ 10	$ 11

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale adjusted to fair value	$ 0	$ 0	$ 0
Fair value of OREO property re-evaluated period	90 days
Loans, net of allowance	$ 57,468,000,000	56,587,000,000	54,786,000,000
Loan securitization trust VIEs, fair value	$ 179,000,000
Average maturity of short-term financial instruments
Residential Real Estate Mortgage Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net of allowance	$ 2,300,000,000	2,200,000,000	2,200,000,000
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale adjusted to fair value	835,000,000	734,000,000	435,000,000
Fair Value [Member] | Discontinued Operations [Member] | Education Lending [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net of allowance	1,600,000,000	1,800,000,000	1,900,000,000
Loans in portfolio		191,000,000	209,000,000
Loans in the trusts			1,700,000,000
Securities issued by the education lending securitization trusts			1,700,000,000
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net of allowance	57,468,000,000	56,587,000,000	54,786,000,000
Carrying Amount [Member] | Discontinued Operations [Member] | Education Lending [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net of allowance	$ 1,900,000,000	$ 2,100,000,000	$ 2,200,000,000

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Information about Level 3 Fair Value Measurements (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]
Other investments	$ 703	$ 760	$ 899
Goodwill	1,057	1,057	979
Nonrecurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans	8	5	6
Level 3 [Member] | Recurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Other investments	70	102	146
Level 3 [Member] | Nonrecurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans	8	5	6
Goodwill	$ 1,057	$ 1,057	$ 979
Level 3 [Member] | Impaired Loans [Member] | Nonrecurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value measurement, valuation technique	Fair value of underlying collateral
Level 3 [Member] | Goodwill [Member] | Nonrecurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value measurement, valuation technique	Discounted cash flow and market data
Level 3 [Member] | Other Investments [Member] | Recurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value measurement, valuation technique	Individual analysis of the condition of each investment
Level 3 [Member] | Discount [Member] | Recurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	8.00%
Level 3 [Member] | Discount [Member] | Nonrecurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	0.00%	10.00%	0.00%
Level 3 [Member] | Discount [Member] | Nonrecurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	64.00%	64.00%	70.00%
Level 3 [Member] | Discount [Member] | Nonrecurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	35.00%	62.00%	29.00%
Level 3 [Member] | Equity Instruments of Public Companies [Member] | Recurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value measurement, valuation technique	Market approach
Level 3 [Member] | EBITDA Multiple [Member] | Recurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	5.40%	5.40%	5.90%
Level 3 [Member] | EBITDA Multiple [Member] | Recurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	6.00%	6.00%	6.00%
Level 3 [Member] | EBITDA Multiple [Member] | Recurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	5.50%	5.50%	6.00%
Level 3 [Member] | EBITDA Multiple (Where Applicable) [Member] | Recurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	6.00%	5.50%	5.50%
Level 3 [Member] | EBITDA Multiple (Where Applicable) [Member] | Recurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	6.80%	6.20%	6.50%
Level 3 [Member] | EBITDA Multiple (Where Applicable) [Member] | Recurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	6.70%	5.80%	5.90%
Level 3 [Member] | Earnings Multiple of Peers [Member] | Nonrecurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Significant unobservable input	11.40%	1140.00%	10.10%
Level 3 [Member] | Earnings Multiple of Peers [Member] | Nonrecurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Significant unobservable input	15.90%	1590.00%	14.40%
Level 3 [Member] | Earnings Multiple of Peers [Member] | Nonrecurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Significant unobservable input	12.92%	1292.00%	11.59%
Level 3 [Member] | Equity Multiple of Peers [Member] | Nonrecurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Significant unobservable input	1.20%	120.00%	1.17%
Level 3 [Member] | Equity Multiple of Peers [Member] | Nonrecurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Significant unobservable input	1.22%	122.00%	1.29%
Level 3 [Member] | Equity Multiple of Peers [Member] | Nonrecurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Significant unobservable input	1.21%	121.00%	1.24%
Level 3 [Member] | Control Premium [Member] | Nonrecurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	10.00%	10.00%
Level 3 [Member] | Control Premium [Member] | Nonrecurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	30.00%	30.00%
Level 3 [Member] | Control Premium [Member] | Nonrecurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	19.70%	19.70%	35.00%
Level 3 [Member] | Weighted-average Cost of Capital [Member] | Nonrecurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	13.00%	13.00%
Level 3 [Member] | Weighted-average Cost of Capital [Member] | Nonrecurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	14.00%	14.00%
Level 3 [Member] | Weighted-average Cost of Capital [Member] | Nonrecurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	13.52%	13.52%	13.00%
Level 3 [Member] | Revenue Multiple (Where Applicable) [Member] | Recurring [Member] | Minimum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		4.30%	0.50%
Level 3 [Member] | Revenue Multiple (Where Applicable) [Member] | Recurring [Member] | Maximum [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		4.30%	4.10%
Level 3 [Member] | Revenue Multiple (Where Applicable) [Member] | Recurring [Member] | Weighted Average [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		4.30%	3.80%

Fair Value Measurements - Fai79

Fair Value Measurements - Fair Value Disclosures of Financial Instruments (Detail) - USD ($)	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
ASSETS
Trading account assets	$ 674,000,000		$ 750,000,000		$ 890,000,000
Securities available for sale	14,244,000,000		13,360,000,000		12,224,000,000
Held-to-maturity securities	4,992,000,000		4,974,000,000		5,154,000,000
Held-to-maturity securities	5,022,000,000		5,015,000,000		5,233,000,000
Other investments	703,000,000		760,000,000		899,000,000
Loans, net of allowance			191,000,000		209,000,000
Loans, net of allowance	57,468,000,000		56,587,000,000		54,786,000,000
Loans held for sale	0		0		0
Loans held for sale	835,000,000	$ 1,649,000,000	734,000,000	$ 784,000,000	435,000,000	$ 401,000,000
Derivative assets	536,000,000		609,000,000		549,000,000
LIABILITIES
Long-term debt	10,267,000,000		7,875,000,000		8,213,000,000
Derivative liabilities	560,000,000		784,000,000		451,000,000
Carrying Amount [Member]
ASSETS
Cash and short-term investments	3,915,000,000		4,922,000,000		3,780,000,000
Trading account assets	674,000,000		750,000,000		890,000,000
Securities available for sale	14,244,000,000		13,360,000,000		12,224,000,000
Held-to-maturity securities	5,022,000,000		5,015,000,000		5,233,000,000
Other investments	703,000,000		760,000,000		899,000,000
Loans, net of allowance	57,468,000,000		56,587,000,000		54,786,000,000
Loans held for sale	835,000,000		734,000,000		435,000,000
Derivative assets	536,000,000		609,000,000		549,000,000
LIABILITIES
Deposits with no stated maturity	65,034,000,000		66,135,000,000		60,868,000,000
Time deposits	5,635,000,000		5,863,000,000		6,931,000,000
Short-term borrowings	972,000,000		998,000,000		1,734,000,000
Long-term debt	10,267,000,000		7,875,000,000		8,213,000,000
Derivative liabilities	560,000,000		784,000,000		451,000,000
Fair Value [Member]
ASSETS
Cash and short-term investments	3,915,000,000		4,922,000,000		3,780,000,000
Trading account assets	674,000,000		750,000,000		890,000,000
Securities available for sale	14,244,000,000		13,360,000,000		12,224,000,000
Held-to-maturity securities	4,992,000,000		4,974,000,000		5,154,000,000
Other investments	703,000,000		760,000,000		899,000,000
Loans, net of allowance	56,012,000,000		54,993,000,000		53,702,000,000
Loans held for sale	835,000,000		734,000,000		435,000,000
Derivative assets	536,000,000		609,000,000		549,000,000
LIABILITIES
Deposits with no stated maturity	65,034,000,000		66,135,000,000		60,868,000,000
Time deposits	5,693,000,000		5,925,000,000		7,004,000,000
Short-term borrowings	972,000,000		998,000,000		1,734,000,000
Long-term debt	10,543,000,000		8,251,000,000		8,649,000,000
Derivative liabilities	560,000,000		784,000,000		451,000,000
Fair Value [Member] | Level 1 [Member]
ASSETS
Cash and short-term investments	3,915,000,000		4,922,000,000		3,780,000,000
Trading account assets	2,000,000		2,000,000		5,000,000
Securities available for sale	12,000,000		22,000,000		22,000,000
Other investments			2,000,000
Derivative assets	121,000,000		91,000,000		51,000,000
LIABILITIES
Time deposits	498,000,000		564,000,000		682,000,000
Short-term borrowings	1,000,000				1,000,000
Long-term debt	10,037,000,000		7,625,000,000		7,687,000,000
Derivative liabilities	100,000,000		77,000,000		52,000,000
Fair Value [Member] | Level 2 [Member]
ASSETS
Trading account assets	672,000,000		748,000,000		885,000,000
Securities available for sale	14,222,000,000		13,328,000,000		12,202,000,000
Held-to-maturity securities	4,992,000,000		4,974,000,000		5,154,000,000
Other investments	342,000,000		344,000,000		338,000,000
Derivative assets	1,230,000,000		1,536,000,000		1,150,000,000
LIABILITIES
Deposits with no stated maturity	65,034,000,000		66,135,000,000		60,868,000,000
Time deposits	5,195,000,000		5,361,000,000		6,322,000,000
Short-term borrowings	971,000,000		998,000,000		1,733,000,000
Long-term debt	506,000,000		626,000,000		962,000,000
Derivative liabilities	946,000,000		1,248,000,000		841,000,000
Fair Value [Member] | Level 3 [Member]
ASSETS
Securities available for sale	10,000,000		10,000,000
Other investments	361,000,000		414,000,000		561,000,000
Loans, net of allowance	56,012,000,000		54,993,000,000		53,702,000,000
Loans held for sale	835,000,000		734,000,000		435,000,000
Derivative assets	19,000,000		16,000,000		25,000,000
LIABILITIES
Derivative liabilities			1,000,000		1,000,000
Fair Value [Member] | Netting Adjustment [Member]
ASSETS
Derivative assets, netting adjustment	(834,000,000)		(1,034,000,000)		(677,000,000)
LIABILITIES
Derivative liabilities, netting adjustment	$ (486,000,000)		$ (542,000,000)		$ (443,000,000)

Securities - Details of Securit

Securities - Details of Securities (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 14,243	$ 13,365	$ 12,233
Gross Unrealized Gains	124	132	173
Gross Unrealized Losses	123	137	182
Fair Value	14,244	13,360	12,224
Held to maturities, Amortized Cost	5,022	5,015	5,233
Held to maturities, Gross Unrealized Gains	17	16	12
Held to maturities, Gross Unrealized Losses	47	57	91
Held to maturities, Fair Value	4,992	4,974	5,154
Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,765	11,310	9,912
Gross Unrealized Gains	101	96	135
Gross Unrealized Losses	115	136	181
Fair Value	11,751	11,270	9,866
Held to maturities, Amortized Cost	4,463	4,755	5,213
Held to maturities, Gross Unrealized Gains	17	15	12
Held to maturities, Gross Unrealized Losses	43	57	91
Held to maturities, Fair Value	4,437	4,713	5,134
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	20	29	18
Gross Unrealized Gains	2	3	4
Fair Value	22	32	22
Held to maturities, Amortized Cost	20	20	20
Held to maturities, Fair Value	20	20	20
States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	19	22	30
Gross Unrealized Gains		1	1
Fair Value	19	23	31
Other Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,439	2,004	2,273
Gross Unrealized Gains	21	32	33
Gross Unrealized Losses	8	1	1
Fair Value	2,452	2,035	$ 2,305
Held to maturities, Amortized Cost	539	240
Held to maturities, Gross Unrealized Gains		1
Held to maturities, Gross Unrealized Losses	4
Held to maturities, Fair Value	$ 535	$ 241

Securities - Available for Sale

Securities - Available for Sale Securities (Unrealized Loss Position) (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity Securities, Gross unrealized losses	$ 47	$ 57	$ 91
Fair value less than 12 months, total temporarily impaired securities	5,559	4,028	1,080
Gross unrealized losses less than 12 months, total temporarily impaired securities	70	63	10
Fair value 12 months or longer, total temporarily impaired securities	3,905	5,006	7,091
Gross unrealized losses 12 months or longer, total temporarily impaired securities	100	131	263
Fair value, total temporarily impaired securities	9,464	9,034	8,171
Gross unrealized losses, total temporarily impaired securities	170	194	273
Other Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	1,060
Gross unrealized losses, less than 12 months	8
Fair value, 12 months or longer		78	85
Gross unrealized losses, 12 months or longer		1	1
Fair Value	1,060	78	85
Gross unrealized losses, Total	8	1	1
Held-to-maturity Securities, Fair Value less than 12 months	475
Held-to-maturity Securities, Gross unrealized losses, less than 12 months	4
Held-to-maturity Securities, Fair Value	475
Held-to-maturity Securities, Gross unrealized losses	4
Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	2,784	3,019	268
Gross unrealized losses, less than 12 months	46	52	1
Fair value, 12 months or longer	2,624	2,932	4,653
Gross unrealized losses, 12 months or longer	69	84	180
Fair Value	5,408	5,951	4,921
Gross unrealized losses, Total	115	136	181
Held-to-maturity Securities, Fair Value less than 12 months	1,236	1,005	811
Held-to-maturity Securities, Gross unrealized losses, less than 12 months	12	11	9
Held-to-maturity Securities, Fair Value 12 months or longer	1,278	1,994	2,351
Held-to-maturity Securities, Gross unrealized losses, 12 months or longer	31	46	82
Held-to-maturity Securities, Fair Value	2,514	2,999	3,162
Held-to-maturity Securities, Gross unrealized losses	43	57	91
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months		4	1
Fair value, 12 months or longer	3	2	2
Fair Value	3	$ 6	$ 3
Held-to-maturity Securities, Fair Value less than 12 months	4
Held-to-maturity Securities, Fair Value	$ 4

Securities - Available for Sa82

Securities - Available for Sale Securities (Unrealized Loss Position) (Parenthetical) (Detail) - Maximum [Member] - Other Securities [Member] - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized losses, available for sale securities	$ 1,000,000	$ 1,000,000	$ 1,000,000
Gross unrealized losses, held-to-maturity securities	$ 1,000,000

Securities - Additional Informa

Securities - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)MortgageLoanPositions	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)MortgageLoanPositions	Jun. 30, 2014USD ($)
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized loss attributable to collateralized mortgage obligations	$ 115,000,000		$ 115,000,000
Number of fixed rate collateralized mortgage obligations | MortgageLoan	65		65
Weighted-average maturity collateralized mortgage, in years			4 years
Weighted-average maturity mortgage-backed securities, in years			4 years 10 months 24 days
Impairment recognized in earnings	$ 0	$ 0
Pledged available for sale and held-to-maturity securities	$ 7,000,000,000		$ 7,000,000,000
Other Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized loss attributable to mortgage-backed securities			$ 8,000,000
Number of other mortgage-backed securities positions | Positions	23		23

Securities - Cumulative Credit

Securities - Cumulative Credit Portion of Impairments on Debt Securities (Detail) $ in Millions	3 Months Ended
	Jun. 30, 2015USD ($)
Investments, Debt and Equity Securities [Abstract]
Cumulative Impairments on Debt Securities, Beginning Balance	$ 4
Impairment recognized in earnings	0
Cumulative Impairments on Debt Securities, Ending Balance	$ 4

Securities - Available for Sa85

Securities - Available for Sale Securities Realized Gains and Losses (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2015USD ($)
Investments, Debt and Equity Securities [Abstract]
Realized gains	$ 0
Realized losses	1
Net securities gains (losses)	$ (1)

Securities - Securities by Matu

Securities - Securities by Maturity (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Investments, Debt and Equity Securities [Abstract]
Amortized Cost of Securities Available for sale, Due in one year or less	$ 257
Amortized Cost of Securities Available for sale, Due after one through five years	12,710
Amortized Cost of Securities Available for sale, Due after five through ten years	1,273
Amortized Cost of Securities Available for sale, Due after ten years	3
Total Amortized Cost of Securities Available for sale	14,243
Fair Value of Securities Available for sale, Due in one year or less	260
Fair Value of Securities Available for sale, Due after one through five years	12,716
Fair Value of Securities Available for sale, Due after five through ten years	1,265
Fair Value of Securities Available for sale, Due after ten years	3
Total Fair Value of Securities Available for sale	14,244
Amortized Cost of Held-to-Maturity Securities, Due in one year or less	7
Amortized Cost of Held-to-Maturity Securities, Due after one through five years	4,476
Amortized Cost of Held-to-Maturity Securities, Due after five through ten years	539
Amortized Cost of Held-to-Maturity Securities, Due after ten years	0
Held to maturities, Amortized Cost	5,022	$ 5,015	$ 5,233
Fair Value of Held-to-Maturity Securities, Due in one year or less	7
Fair Value of Held-to-Maturity Securities, Due after one through five years	4,450
Fair Value of Held-to-Maturity Securities, Due after five through ten years	535
Fair Value of Held-to-Maturity Securities, Due after ten years	0
Total Fair Value of Held-to-Maturity Securities	$ 4,992	$ 4,974	$ 5,154

Derivatives and Hedging Activ87

Derivatives and Hedging Activities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015USD ($)CounterpartyCreditRatings	Dec. 31, 2014USD ($)	Jun. 30, 2014USD ($)
Credit Derivatives [Line Items]
Derivative assets after effects of bilateral collateral and master netting agreements	$ 76,000,000
Derivative liabilities after effects of bilateral collateral and master netting agreements	7,000,000
Derivative assets not designated as hedging instruments after effects of bilateral collateral and master netting agreements, and a reserve for potential future losses	460,000,000
Derivative liabilities not designated as hedging instruments after effects of bilateral collateral and master netting agreements, and a reserve for potential future losses	567,000,000
Reclassify of after-tax net losses on derivative instruments from AOCI	$ 37,000,000
Length of time hedge in cash flow hedge	12 months
Reclassification of net gains related to terminated cash flow hedges from AOCI to income	$ 1,000,000
Maximum length of time over which forecasted transactions are hedged, years	13 years
Other Comprehensive income unrealized gain on derivatives arising during period net of tax	$ 28,000,000
Cash collateral netted against derivative assets	364,000,000	$ 518,000,000	$ 289,000,000
Collateral netted against derivative liabilities	16,000,000	26,000,000	55,000,000
Cash collateral not netted transferred with clearing organization	114,000,000	56,000,000	35,000,000
Cash collateral not netted transferred from clearing organization	3,000,000	0	0
Gross exposure on derivatives, after taking into account the effects of bilateral collateral and master netting agreements	714,000,000
Net exposure on derivatives, after taking into account, the effects of bilateral collateral and master netting agreements	162,000,000
Over-collateralization on derivatives to broker-dealers and banks, after the application of master netting agreements and collateral	41,000,000
Additional collateral held in the form of securities	121,000,000
Default reserve associated with uncollateralized contracts	11,000,000	9,000,000
Gross exposure on derivatives after taking into account effects of master netting agreements	413,000,000
Net exposure on derivatives with clients after application of master netting agreements collateral and related reserve	374,000,000
Letter of credit	$ 25,000,000
Number of counter parties guaranteed | Counterparty	1
Key Corp [Member]
Credit Derivatives [Line Items]
Net liability position totaled	$ 6,000,000
Cash and securities collateral posted	6,000,000
Key Corp [Member] | Maximum [Member]
Credit Derivatives [Line Items]
Additional collateral amount	0	$ 1,000,000	$ 3,000,000
Key Corp [Member] | Maximum [Member] | Unsecured Debt [Member]
Credit Derivatives [Line Items]
Payments to terminate contracts	1,000,000
KeyBank (consolidated) [Member]
Credit Derivatives [Line Items]
Net liability position totaled	243,000,000
Derivative assets included in net liability position	212,000,000
Derivative liabilities included in net liability position	455,000,000
Cash and securities collateral posted	$ 218,000,000
Number of ratings above noninvestment | CreditRatings	4,000,000
KeyBank (consolidated) [Member] | Maximum [Member] | Unsecured Debt [Member]
Credit Derivatives [Line Items]
Payments to terminate contracts	$ 7,000,000

Derivatives and Hedging Activ88

Derivatives and Hedging Activities - Fair Values, Volume of Activity and Gain (Loss) Information Related to Derivative Instruments (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Derivatives, Fair Value [Line Items]
Notional Amount	$ 71,252,000,000	$ 65,317,000,000	$ 67,770,000,000
Derivative Assets	440,000,000	454,000,000	484,000,000
Derivative Liabilities	344,000,000	543,000,000	71,000,000
Derivative Asset, Netting adjustments	(834,000,000)	(1,034,000,000)	(677,000,000)
Derivative Liability, Netting adjustments	(486,000,000)	(542,000,000)	(443,000,000)
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	17,657,000,000	15,466,000,000	14,884,000,000
Derivative assets	284,000,000	280,000,000	311,000,000
Derivative liabilities	26,000,000	26,000,000	25,000,000
Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	53,595,000,000	49,851,000,000	52,886,000,000
Derivative assets	1,086,000,000	1,363,000,000	915,000,000
Derivative liabilities	1,020,000,000	1,300,000,000	869,000,000
Other Collateral [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	(96,000,000)	(155,000,000)	(65,000,000)
Derivative Liabilities	(216,000,000)	(241,000,000)	(380,000,000)
Net Derivatives [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	71,252,000,000	65,317,000,000	67,770,000,000
Derivative Assets	536,000,000	609,000,000	549,000,000
Derivative Liabilities	560,000,000	784,000,000	451,000,000
Interest Rate [Member] | Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	17,324,000,000	15,095,000,000	14,459,000,000
Derivative assets	267,000,000	272,000,000	307,000,000
Derivative liabilities	22,000,000	26,000,000	17,000,000
Interest Rate [Member] | Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	45,067,000,000	43,771,000,000	44,041,000,000
Derivative assets	589,000,000	665,000,000	677,000,000
Derivative liabilities	546,000,000	618,000,000	636,000,000
Foreign Exchange [Member] | Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	333,000,000	371,000,000	425,000,000
Derivative assets	17,000,000	8,000,000	4,000,000
Derivative liabilities	4,000,000		8,000,000
Foreign Exchange [Member] | Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	6,486,000,000	4,024,000,000	6,338,000,000
Derivative assets	114,000,000	85,000,000	52,000,000
Derivative liabilities	104,000,000	81,000,000	48,000,000
Commodity [Member] | Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	1,537,000,000	1,544,000,000	1,854,000,000
Derivative assets	379,000,000	608,000,000	182,000,000
Derivative liabilities	365,000,000	594,000,000	177,000,000
Credit [Member] | Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	505,000,000	512,000,000	653,000,000
Derivative assets	4,000,000	5,000,000	4,000,000
Derivative liabilities	$ 5,000,000	$ 7,000,000	$ 8,000,000

Derivatives and Hedging Activ89

Derivatives and Hedging Activities - Pre-Tax Net Gains (Losses) on Fair Value Hedges (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Derivatives, Fair Value [Line Items]
Net Gains (Losses) on Derivative	$ 43	$ 79
Net Gains (Losses) on Hedged Item	17	(13)
Other Income [Member] | Interest Rate [Member]
Derivatives, Fair Value [Line Items]
Net Gains (Losses) on Derivative	(17)	13
Net Gains (Losses) on Hedged Item	17	(13)
Interest Expense [Member] | Interest Rate [Member]
Derivatives, Fair Value [Line Items]
Net Gains (Losses) on Derivative	$ 60	$ 66

Derivatives and Hedging Activ90

Derivatives and Hedging Activities - Derivative Instrument Cash Flow Hedge Earning Recognized by Income Statement Location (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI (Effective Portion)	$ 67	$ 35
Net Gains (Losses) Reclassified From OCI Into Income (Effective Portion)	43	28
Net Gains (Losses) Recognized in Income (Ineffective Portion)	0	0
Other Income [Member] | Interest Rate [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in Income (Ineffective Portion)	0	0
Other Income [Member] | Foreign Exchange [Member] | Net Investment Hedges [Member]
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI (Effective Portion)	17	(1)
Net Gains (Losses) Reclassified From OCI Into Income (Effective Portion)		(1)
Net Gains (Losses) Recognized in Income (Ineffective Portion)	0	0
Interest Income [Member] | Interest Rate [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI (Effective Portion)	48	40
Net Gains (Losses) Reclassified From OCI Into Income (Effective Portion)	45	31
Interest Expense [Member] | Interest Rate [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI (Effective Portion)	1	(4)
Net Gains (Losses) Reclassified From OCI Into Income (Effective Portion)	(2)	$ (2)
Investment Banking and Debt Placement Fees [Member] | Interest Rate [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI (Effective Portion)	$ 1

Derivatives and Hedging Activ91

Derivatives and Hedging Activities - After-Tax Change in AOCI Resulting from Cash Flow Hedges (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2015USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
December 31, 2014	$ (8)
2015 Hedging Activity	42
Reclassification of Gains to Net Income	(27)
June 30, 2015	$ 7

Derivatives and Hedging Activ92

Derivatives and Hedging Activities - Pre-Tax Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	$ 23	$ 20
Interest Rate [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	9	9
Foreign Exchange [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	18	17
Commodity [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	3	2
Credit [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	(7)	(8)
Corporate Services Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	30	28
Corporate Services Income [Member] | Interest Rate [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	9	9
Corporate Services Income [Member] | Foreign Exchange [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	18	17
Corporate Services Income [Member] | Commodity [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	3	2
Other Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	(7)	(8)
Other Income [Member] | Credit [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gains (Losses), Net	$ (7)	$ (8)

Derivatives and Hedging Activ93

Derivatives and Hedging Activities - Largest Exposure to Individual Counterparty (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Derivative [Line Items]
Net exposure after netting adjustments and collateral	$ 536	$ 609	$ 549
Largest Individual Counterparty [Member]
Derivative [Line Items]
Largest gross exposure (derivative asset) to an individual counterparty	105	133	117
Collateral posted by this counterparty	44	100	47
Derivative liability with this counterparty	90	31	108
Collateral pledged to this counterparty	37		44
Net exposure after netting adjustments and collateral	$ 8	$ 2	$ 6

Derivatives and Hedging Activ94

Derivatives and Hedging Activities - Fair Value of Derivative Assets by Type (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 900	$ 1,127	$ 838
Less: Related collateral	364	518	289
Total derivative assets	536	609	549
Interest Rate [Member]
Credit Derivatives [Line Items]
Derivative assets before collateral	606	607	657
Foreign Exchange [Member]
Credit Derivatives [Line Items]
Derivative assets before collateral	50	41	29
Commodity [Member]
Credit Derivatives [Line Items]
Derivative assets before collateral	243	478	$ 152
Credit [Member]
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 1	$ 1

Derivatives and Hedging Activ95

Derivatives and Hedging Activities - Fair Value of Credit Derivatives Purchased and Sold (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Credit Derivatives [Line Items]
Purchased		$ (2)	$ (4)
Sold	$ (1)
Credit derivatives, net	(1)	(2)	(4)
Single Name Credit Default Swaps [Member]
Credit Derivatives [Line Items]
Purchased	(2)	(3)	(3)
Credit derivatives, net	(2)	(3)	(3)
Traded Credit Default Swap Indices [Member]
Credit Derivatives [Line Items]
Purchased	2	1	(1)
Credit derivatives, net	2	$ 1	$ (1)
Other [Member]
Credit Derivatives [Line Items]
Sold	(1)
Credit derivatives, net	$ (1)

Derivatives and Hedging Activ96

Derivatives and Hedging Activities - Credit Derivatives Sold and Held (Detail) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Credit Derivatives [Line Items]
Notional Amount	$ 11,000,000	$ 54,000,000	$ 11,000,000
Single Name Credit Default Swaps [Member]
Credit Derivatives [Line Items]
Notional Amount	$ 5,000,000	$ 45,000,000	$ 5,000,000
Average Term (Years)	2 months 19 days	4 months 2 days	8 months 19 days
Payment / Performance Risk	0.87%	4.76%	0.87%
Other [Member]
Credit Derivatives [Line Items]
Notional Amount	$ 6,000,000	$ 9,000,000	$ 6,000,000
Average Term (Years)	2 years 6 months 4 days	3 years 22 days	2 years 10 months 21 days
Payment / Performance Risk	8.36%	5.82%	9.58%

Derivatives and Hedging Activ97

Derivatives and Hedging Activities - Credit Risk Contingent Feature (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Credit Derivatives [Line Items]
Additional collateral aggregate fair value	$ 121
Moody's, A3 Rating [Member] | One Rating Downgrade [Member]
Credit Derivatives [Line Items]
Additional collateral aggregate fair value	4	$ 1	$ 1
Moody's, A3 Rating [Member] | Two Rating Downgrades [Member]
Credit Derivatives [Line Items]
Additional collateral aggregate fair value	4	1	1
Moody's, A3 Rating [Member] | Three Rating Downgrades [Member]
Credit Derivatives [Line Items]
Additional collateral aggregate fair value	6	3	1
Standard & Poor's, A- Rating [Member] | One Rating Downgrade [Member]
Credit Derivatives [Line Items]
Additional collateral aggregate fair value	4	1	1
Standard & Poor's, A- Rating [Member] | Two Rating Downgrades [Member]
Credit Derivatives [Line Items]
Additional collateral aggregate fair value	4	1	1
Standard & Poor's, A- Rating [Member] | Three Rating Downgrades [Member]
Credit Derivatives [Line Items]
Additional collateral aggregate fair value	$ 6	$ 3	$ 1

Mortgage Servicing Assets - Cha

Mortgage Servicing Assets - Changes in Carrying Amount of Mortgage Servicing Assets (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Servicing Asset [Abstract]
Balance at beginning of period	$ 323	$ 332
Servicing retained from loan sales	28	13
Purchases	25	28
Amortization	(47)	(50)
Balance at end of period	329	323
Fair value at end of period	$ 423	$ 402

Mortgage Servicing Assets - Sch

Mortgage Servicing Assets - Schedule of Range and Weighted-Average of Significant Unobservable Inputs (Detail) - Discounted Cash Flow [Member] - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Servicing Assets at Fair Value [Line Items]
Prepayment speed	(4.70%)	(5.70%)
Expected defaults	(1.80%)	(2.00%)
Residual cash flows discount rate	(7.80%)	(7.80%)
Escrow earn rate	(2.00%)	(1.60%)
Servicing cost	$ (1,088,000,000)	$ (990,000,000)
Loan assumption rate	(1.41%)	(1.59%)
Percentage late	(0.32%)	(0.33%)
Minimum [Member]
Servicing Assets at Fair Value [Line Items]
Prepayment speed	1.70%	2.00%
Expected defaults	1.00%	1.00%
Residual cash flows discount rate	7.00%	7.00%
Escrow earn rate	0.70%	0.50%
Servicing cost	$ 150,000,000	$ 150,000,000
Loan assumption rate	0.20%	0.00%
Percentage late	0.00%	0.00%
Maximum [Member]
Servicing Assets at Fair Value [Line Items]
Prepayment speed	14.90%	11.60%
Expected defaults	3.00%	3.00%
Residual cash flows discount rate	15.00%	14.10%
Escrow earn rate	3.30%	2.90%
Servicing cost	$ 2,750,000,000	$ 5,000,000,000
Loan assumption rate	3.00%	3.00%
Percentage late	2.00%	2.00%

Mortgage Servicing Assets - Add

Mortgage Servicing Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Servicing Asset [Abstract]
Contractual fee income from servicing commercial mortgage loans	$ 9	$ 11	$ 22	$ 26

Variable Interest Entities - Va

Variable Interest Entities - Variable Interest Entities Information (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
LIHTC Funds [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Carrying Amount of Assets, Consolidated VIEs	$ 1	$ 1	$ 1
Variable Interest Entity, Carrying Amount of Liabilities, Consolidated VIEs	1	2	1
Variable Interest Entity, Carrying Amount of Assets, Unconsolidated VIEs	55	97	55
LIHTC Investments [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Carrying Amount of Assets, Unconsolidated VIEs	1,305	1,549	1,234
Variable Interest Entity, Carrying Amount of Liabilities, Unconsolidated VIEs	4	5	4
Maximum Exposure to Loss, Unconsolidated VIEs	$ 520	508	$ 521
Education Loan Securitization Trusts [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Carrying Amount of Assets, Consolidated VIEs		1,730
Variable Interest Entity, Carrying Amount of Liabilities, Consolidated VIEs		$ 1,677

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
LIHTC Funds [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Carrying Amount of Assets, Consolidated VIEs	$ 1,000,000	$ 1,000,000	$ 1,000,000
Settlement value of third-party interests, reserves	4,000,000
Variable Interest Entity, Carrying Amount of Assets, Unconsolidated VIEs	55,000,000	97,000,000	55,000,000
LIHTC Funds [Member] | Minimum [Member]
Variable Interest Entity [Line Items]
Settlement value of third-party interests, approximately	0
LIHTC Funds [Member] | Maximum [Member]
Variable Interest Entity [Line Items]
Settlement value of third-party interests, approximately	4,000,000
LIHTC Funds [Member] | Investments [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Carrying Amount of Assets, Consolidated VIEs	1,000,000	1,000,000	1,000,000
LIHTC Investments [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Carrying Amount of Assets, Unconsolidated VIEs	1,305,000,000	1,549,000,000	1,234,000,000
Assets of unconsolidated LIHTC operating partnerships	835,000,000	780,000,000	764,000,000
Maximum exposure to loss, unconsolidated VIE	404,000,000
Recapture tax claim	112,000,000
Tax credit of investment	66,000,000	60,000,000
Additional investments in unconsolidated LIHTC operating partnerships held by consolidated LIHTC	470,000,000	769,000,000	$ 470,000,000
Investment in LIHTC	1,100,000,000	988,000,000
LIHTC Investments [Member] | Return Guarantee Agreement with LIHTC Investors [Member]
Variable Interest Entity [Line Items]
Tax credit of investment	4,000,000
LIHTC Investments [Member] | Investments [Member]
Variable Interest Entity [Line Items]
Amortization of investment	$ 59,000,000	$ 51,000,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Total income tax expense (benefit), rate	26.30%	23.10%
Combined federal and state statutory tax rate			37.20%
Federal deferred tax asset	$ 195,000,000	$ 135,000,000	$ 195,000,000	$ 174,000,000
State deferred tax asset	24,000,000	6,000,000	24,000,000	20,000,000
Valuation allowance		1,000,000
Reduction in deferred tax assets		$ 1,000,000		1,000,000
Maximum [Member]
Income Taxes [Line Items]
Valuation allowance	1,000,000		$ 1,000,000	$ 1,000,000
Reduction in deferred tax assets	$ 1,000,000

Acquisitions and Discontinue104

Acquisitions and Discontinued Operations - Additional Information (Detail)	3 Months Ended		6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2014USD ($)	Mar. 31, 2014USD ($)	Jun. 30, 2015USD ($)SecurityLoanTrustTDRs	Jun. 30, 2014USD ($)SecurityLoan	Sep. 30, 2014USD ($)Trust	Dec. 31, 2014USD ($)SecurityLoan	Dec. 31, 2009Trust
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Estimated goodwill	$ 979,000,000		$ 1,057,000,000	$ 979,000,000		$ 1,057,000,000
Trust assets removed	4,237,000,000		2,169,000,000	4,237,000,000		2,324,000,000
Trust liabilities removed	1,680,000,000			1,680,000,000		3,000,000
Allowance for loan held as investment	814,000,000		$ 796,000,000	$ 814,000,000		$ 794,000,000
Number of TDRs | SecurityLoan			4,684	4,719		4,776
Loans at fair value	209,000,000			$ 209,000,000		$ 191,000,000
Number of outstanding securitizations trusts | Trust			3
Loans held for sale at fair value	0		$ 0	0		0
Cash portion in gain		$ 6,000,000
Pacific Crest Securities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business acquisition, date of acquisition			Sep. 3, 2014
Business acquisition intangible asset						13,000,000
Estimated goodwill						78,000,000
Number of outstanding securitization trusts | Trust					3
Proceeds from sale of residual interests					$ 57,000,000
After tax loss recognized					25,000,000
Estimated fair value of the assets and deposits acquired					$ 1,000,000
Number of continuing securitization trusts | Trust					8
Trust [Member] | Pacific Crest Securities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trust assets removed					$ 1,700,000,000
Trust liabilities removed					$ 1,600,000,000
Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans held for sale at fair value			$ 179,000,000
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of outstanding securitization trusts | Trust							10
Trust assets removed	4,237,000,000		2,169,000,000	4,237,000,000		2,324,000,000
Trust liabilities removed	1,680,000,000			1,680,000,000		3,000,000
Economic interest or risk of loss associated with education loan securitization trusts			0
Fair value of loans and securities in securitization trusts after tax loss	22,000,000
Discontinued Operations [Member] | Trust [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans at fair value	1,711,000,000			1,711,000,000
Discontinued Operations [Member] | Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans at fair value	$ 209,000,000			$ 209,000,000		$ 191,000,000
Loans held for sale at fair value			179,000,000
Education Loans [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment recorded			19,000,000
Allowance for loan held as investment			$ 1,000,000
Number of TDRs | TDRs			1,767

Acquisitions and Discontinue105

Acquisitions and Discontinued Operations - Components of Income (Loss) from Discontinued Operations, Net of Taxes for Education Lending Business (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income taxes	$ 2	$ (16)	$ 5	$ (14)
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(24)
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net interest income	10	24	20	48
Provision for credit losses		6	2	10
Net interest income after provision for credit losses	10	18	18	38
Noninterest income	(1)	(56)	3	(60)
Noninterest expense	4	6	8	16
Income (loss) before income taxes	5	(44)	13	(38)
Income taxes	2	(16)	5	(14)
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(24)
Education Lending [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) before income taxes	5	(45)	13	(46)
Income taxes	2	(17)	5	(17)
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(29)
Education Lending [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net interest income	10	23	20	46
Provision for credit losses		6	2	10
Net interest income after provision for credit losses	10	17	18	36
Noninterest income	(1)	(56)	3	(70)
Noninterest expense	$ 4	$ 6	$ 8	$ 12

Acquisitions and Discontinue106

Acquisitions and Discontinued Operations - Components of Income (Loss) from Discontinued Operations, Net of Taxes for Education Lending Business (Parenthetical) (Detail) - Discontinued Operations [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Charges determined by applying a matched funds transfer pricing methodology to the liabilities assumed necessary to support the discontinued operations, after tax	$ 5	$ 8	$ 11	$ 17
Education Lending [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Charges determined by applying a matched funds transfer pricing methodology to the liabilities assumed necessary to support the discontinued operations, after tax	$ 5	$ 8	$ 11	$ 17

Acquisitions and Discontinue107

Acquisitions and Discontinued Operations - Components of Assets and Liabilities of Education Lending Business (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans at fair value		$ 191,000,000	$ 209,000,000
Loans, net of unearned income	$ 58,264,000,000	57,381,000,000	55,600,000,000
Loans held for sale at fair value	0	0	0
Total assets	2,169,000,000	2,324,000,000	4,237,000,000
Trust accrued expense and other liabilities at fair value	1,537,000,000	1,621,000,000	1,400,000,000
Total liabilities		3,000,000	1,680,000,000
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans, net of unearned income	1,962,000,000	2,104,000,000	2,242,000,000
Less: Allowance for loan and lease losses	22,000,000	29,000,000	32,000,000
Net loans	1,940,000,000	2,266,000,000	4,130,000,000
Accrued income and other assets	34,000,000	38,000,000	41,000,000
Total assets	2,169,000,000	2,324,000,000	4,237,000,000
Trust securities at fair value			1,660,000,000
Total liabilities		3,000,000	1,680,000,000
Trust [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans at fair value			1,711,000,000
Trust accrued income and other assets at fair value			19,000,000
Trust accrued expense and other liabilities at fair value			17,000,000
Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans held for sale at fair value	179,000,000
Portfolio [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans at fair value		191,000,000	209,000,000
Loans held for sale at fair value	179,000,000
Education Lending [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Held-to-maturity securities	1,000,000	1,000,000
Loans, net of unearned income	1,962,000,000	2,104,000,000	2,242,000,000
Less: Allowance for loan and lease losses	22,000,000	29,000,000	32,000,000
Net loans	1,940,000,000	2,266,000,000	4,130,000,000
Accrued income and other assets	34,000,000	38,000,000	41,000,000
Total assets	2,154,000,000	2,305,000,000	4,190,000,000
Total liabilities			1,677,000,000
Education Lending [Member] | Trust [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans at fair value			1,711,000,000
Trust accrued income and other assets at fair value			19,000,000
Trust accrued expense and other liabilities at fair value			17,000,000
Trust securities at fair value			1,660,000,000
Education Lending [Member] | Portfolio [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans at fair value		$ 191,000,000	$ 209,000,000
Loans held for sale at fair value	$ 179,000,000

Acquisitions and Discontinue108

Acquisitions and Discontinued Operations - Components of Assets and Liabilities of Education Lending Business (Parenthetical) (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Unearned income on loans	$ 657,000,000	$ 682,000,000	$ 709,000,000
Maximum [Member] | Education Lending [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Unearned income on loans	$ 1,000,000	$ 1,000,000	$ 1,000,000

Acquisitions and Discontinue109

Acquisitions and Discontinued Operations - Quantitative Information about Level 3 Fair Value Measurements (Detail) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]
Portfolio loans held for sale accounted for at fair value	$ 0	$ 0	$ 0
Level 3 [Member] | Portfolio Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Portfolio loans held for sale accounted for at fair value	$ 179,000,000
Trust loans and portfolio loans accounted for at fair value			$ 191,000,000
Valuation Techniques	Market approach		Discounted cash flow
Level 3 [Member] | Trust and Portfolio Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Trust loans and portfolio loans accounted for at fair value		$ 1,920,000,000
Valuation Techniques		Discounted cash flow
Level 3 [Member] | Trust Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Trust loans and portfolio loans accounted for at fair value		$ 1,660,000,000
Valuation Techniques		Discounted cash flow
Minimum [Member] | Level 3 [Member] | Portfolio Loan Indicative Bids [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	88.24%
Minimum [Member] | Level 3 [Member] | Prepayment Speed Trust Loans and Portfolio Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		4.00%	5.40%
Minimum [Member] | Level 3 [Member] | Loss Severity [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		2.00%	2.00%
Minimum [Member] | Level 3 [Member] | Loan Discount Rates [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		2.10%	3.90%
Minimum [Member] | Level 3 [Member] | Loan Default Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		8.50%	0.86%
Minimum [Member] | Level 3 [Member] | Discount Rate Trust Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		1.20%
Maximum [Member] | Level 3 [Member] | Portfolio Loan Indicative Bids [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs	105.55%
Maximum [Member] | Level 3 [Member] | Prepayment Speed Trust Loans and Portfolio Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		13.50%	5.60%
Maximum [Member] | Level 3 [Member] | Loss Severity [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		82.00%	77.00%
Maximum [Member] | Level 3 [Member] | Loan Discount Rates [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		10.50%	4.00%
Maximum [Member] | Level 3 [Member] | Loan Default Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		26.00%	1.70%
Maximum [Member] | Level 3 [Member] | Discount Rate Trust Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		3.00%
Weighted Average [Member] | Level 3 [Member] | Prepayment Speed Trust Loans and Portfolio Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		6.97%	5.50%
Weighted Average [Member] | Level 3 [Member] | Loss Severity [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		52.01%	25.66%
Weighted Average [Member] | Level 3 [Member] | Loan Discount Rates [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		3.52%	3.92%
Weighted Average [Member] | Level 3 [Member] | Loan Default Rate [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		20.59%	1.12%
Weighted Average [Member] | Level 3 [Member] | Discount Rate Trust Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage of significant unobservable inputs		2.16%

Acquisitions and Discontinue110

Acquisitions and Discontinued Operations - Principal and Fair Value Amounts for Portfolio Loans Held for Sale at Fair Value, Portfolio Loans at Carrying Value, Trust Loans at Fair Value, and Portfolio Loans at Fair Value (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accruing loans past due 90 days or more	$ 66	$ 96	$ 83
Portfolio Loans Held For Sale [Member] | Fair Value [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accruing loans past due 90 days or more	5
Accruing loans past due 90 days or more	5
Trust [Member] | Fair Value [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accruing loans past due 90 days or more			23
Loans placed on nonaccrual status			7
Accruing loans past due 90 days or more			23
Loans placed on nonaccrual status			7
Portfolio [Member] | Fair Value [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accruing loans past due 90 days or more		5	6
Loans placed on nonaccrual status			1
Accruing loans past due 90 days or more		5	6
Loans placed on nonaccrual status			1
Portfolio [Member] | Carrying Amount [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accruing loans past due 90 days or more	26	29	29
Loans placed on nonaccrual status	$ 6	$ 11	$ 9

Acquisitions and Discontinue111

Acquisitions and Discontinued Operations - Portfolio Loans Held for Sale at Fair Value, Portfolio Loans at Fair Value, and Consolidated Trusts' Assets and Liabilities at Fair Value and Related Contractual Values (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trust loans accounted for at fair value		$ 191	$ 209
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trust fair value of securities			1,660
Discontinued Operations [Member] | Trust [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Trust loans accounted for at fair value			1,711
Trust fair value of other assets			19
Discontinued Operations [Member] | Trust [Member] | Education Lending [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Portfolio contractual amount of loans held for sale	$ 179
Portfolio contractual amount of loans		192	207
Trust contractual amount of loans			1,740
Trust contractual amount of other assets			19
Trust contractual amount of securities			1,752
Trust contractual amount of other liabilities			17
Portfolio fair value of loans held for sale	$ 179
Portfolio fair value of loans		$ 191	209
Trust loans accounted for at fair value			1,711
Trust fair value of other assets			19
Trust fair value of securities			1,660
Trust fair value of other liabilities			$ 17

Acquisitions and Discontinue112

Acquisitions and Discontinued Operations - Consolidated Assets and Liabilities at Fair Value on Recurring Basis (Detail) - Recurring [Member] - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
ASSETS MEASURED ON A RECURRING BASIS
Total assets at fair value	$ 15,817	$ 15,135	$ 14,228
LIABILITIES MEASURED ON A RECURRING BASIS
Total liabilities on a recurring basis at fair value	1,090	1,207	976
Trust [Member] | Education Lending [Member]
ASSETS MEASURED ON A RECURRING BASIS
Portfolio loans		191	209
Portfolio loans held for sale	179
Trust loans			1,711
Trust other assets			19
Total assets at fair value	179	191	1,939
LIABILITIES MEASURED ON A RECURRING BASIS
Trust securities			1,660
Trust other liabilities			17
Total liabilities on a recurring basis at fair value			1,677
Level 3 [Member]
ASSETS MEASURED ON A RECURRING BASIS
Total assets at fair value	390	440	586
LIABILITIES MEASURED ON A RECURRING BASIS
Total liabilities on a recurring basis at fair value		1	1
Level 3 [Member] | Trust [Member] | Education Lending [Member]
ASSETS MEASURED ON A RECURRING BASIS
Portfolio loans		191	209
Portfolio loans held for sale	179
Trust loans			1,711
Trust other assets			19
Total assets at fair value	$ 179	$ 191	1,939
LIABILITIES MEASURED ON A RECURRING BASIS
Trust securities			1,660
Trust other liabilities			17
Total liabilities on a recurring basis at fair value			$ 1,677

Acquisitions and Discontinue113

Acquisitions and Discontinued Operations - Change in Fair Values of Level 3 Portfolio Loans Held for Sale, Portfolio Loans, and Consolidated Education Loan Securitization Trusts and Portfolio Loans (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans held for sale	$ 0	$ 0	$ 0	$ 0	$ 0
Discontinued Operations [Member] | Education Lending [Member] | Portfolio Student Loans Held For Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans held for sale	179,000,000		179,000,000
Ending Balance	179,000,000		179,000,000
Discontinued Operations [Member] | Education Lending [Member] | Portfolio Student Loans [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Beginning Balance	187,000,000	143,000,000	191,000,000	147,000,000
Gains (losses) recognized in earnings	(2,000,000)	(4,000,000)	1,000,000	(4,000,000)
Purchases		74,000,000		74,000,000
Settlements	(6,000,000)	(4,000,000)	(13,000,000)	(8,000,000)
Loans held for sale	$ (179,000,000)		$ (179,000,000)
Ending Balance		209,000,000		209,000,000
Discontinued Operations [Member] | Education Lending [Member] | Trust Student Loans [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Beginning Balance		1,893,000,000		1,960,000,000
Gains (losses) recognized in earnings		(36,000,000)		(34,000,000)
Sales		(74,000,000)		(74,000,000)
Settlements		(72,000,000)		(141,000,000)
Ending Balance		1,711,000,000		1,711,000,000
Discontinued Operations [Member] | Education Lending [Member] | Trust Other Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Beginning Balance		19,000,000		20,000,000
Settlements		0		(1,000,000)
Ending Balance		19,000,000		19,000,000
Discontinued Operations [Member] | Education Lending [Member] | Trust Other Liabilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Beginning Balance		20,000,000		20,000,000
Settlements		(3,000,000)		(3,000,000)
Ending Balance		17,000,000		17,000,000
Discontinued Operations [Member] | Trust Securities [Member] | Education Lending [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Beginning Balance		1,796,000,000		1,834,000,000
Gains (losses) recognized in earnings		17,000,000		33,000,000
Settlements		(153,000,000)		(207,000,000)
Ending Balance		$ 1,660,000,000		$ 1,660,000,000

Acquisitions and Discontinue114

Acquisitions and Discontinued Operations - Change in Fair Values of Level 3 Portfolio Loans Held for Sale, Portfolio Loans, and Consolidated Education Loan Securitization Trusts and Portfolio Loans (Parenthetical) (Detail) - USD ($)	Jun. 30, 2015	Jun. 30, 2014
Education Lending [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Issuances transfers	$ 0	$ 0

Acquisitions and Discontinue115

Acquisitions and Discontinued Operations - Components of Income (Loss) from Discontinued Operations, Net of Taxes (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income taxes	$ 2	$ (16)	$ 5	$ (14)
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(24)
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net interest income	10	24	20	48
Noninterest income	(1)	(56)	3	(60)
Noninterest expense	4	6	8	16
Income (loss) before income taxes	5	(44)	13	(38)
Income taxes	2	(16)	5	(14)
Income (loss) from discontinued operations, net of taxes	$ 3	(28)	$ 8	(24)
Discontinued Operations [Member] | Austin Capital Management [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noninterest expense				4
Income (loss) before income taxes				(4)
Income taxes				(2)
Income (loss) from discontinued operations, net of taxes				(2)
Discontinued Operations [Member] | Victory Capital Management [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net interest income		1		2
Noninterest income				10
Income (loss) before income taxes		1		12
Income taxes		$ 1		5
Income (loss) from discontinued operations, net of taxes				$ 7

Acquisitions and Discontinue116

Acquisitions and Discontinued Operations - Components of Assets and Liabilities from Discontinued Operations (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and due from banks	$ 693	$ 653	$ 604	$ 617
Seller note		191	209
Total assets	2,169	2,324	4,237
Total liabilities		3	1,680
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and due from banks	15	19	19
Total assets	2,169	2,324	4,237
Total liabilities		3	1,680
Discontinued Operations [Member] | Victory Capital Management [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total assets			28
Discontinued Operations [Member] | Austin Capital Management [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and due from banks	15	19	19
Total assets	$ 15	19	19
Accrued expense and other liabilities		3	3
Total liabilities		$ 3	3
Discontinued Operations [Member] | Seller Note [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Seller note			28
Discontinued Operations [Member] | Seller Note [Member] | Victory Capital Management [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Seller note			$ 28

Acquisitions and Discontinue117

Acquisitions and Discontinued Operations - Combined Results of Discontinued Operations (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income taxes	$ 2	$ (16)	$ 5	$ (14)
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(24)
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net interest income	10	24	20	48
Provision for credit losses		6	2	10
Net interest income after provision for credit losses	10	18	18	38
Noninterest income	(1)	(56)	3	(60)
Noninterest expense	4	6	8	16
Income (loss) before income taxes	5	(44)	13	(38)
Income taxes	2	(16)	5	(14)
Income (loss) from discontinued operations, net of taxes	$ 3	$ (28)	$ 8	$ (24)

Acquisitions and Discontinue118

Acquisitions and Discontinued Operations - Combined Results of Discontinued Operations (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Charges determined by applying a matched funds transfer pricing methodology to the liabilities assumed necessary to support the discontinued operations, after tax	$ 5	$ 8	$ 11	$ 17

Acquisitions and Discontinue119

Acquisitions and Discontinued Operations - Combined Assets and Liabilities of Discontinued Operations (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and due from banks	$ 693,000,000	$ 653,000,000	$ 604,000,000	$ 617,000,000
Held-to-maturity securities	5,022,000,000	5,015,000,000	5,233,000,000
Portfolio loans at fair value		191,000,000	209,000,000
Loans, net of unearned income	58,264,000,000	57,381,000,000	55,600,000,000
Portfolio loans held for sale at fair value	0	0	0
Total assets	2,169,000,000	2,324,000,000	4,237,000,000
Trust accrued expense and other liabilities at fair value	1,537,000,000	1,621,000,000	1,400,000,000
Total liabilities		3,000,000	1,680,000,000
Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Portfolio loans held for sale at fair value	179,000,000
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and due from banks	15,000,000	19,000,000	19,000,000
Held-to-maturity securities	1,000,000	1,000,000
Loans, net of unearned income	1,962,000,000	2,104,000,000	2,242,000,000
Less: Allowance for loan and lease losses	22,000,000	29,000,000	32,000,000
Net loans	1,940,000,000	2,266,000,000	4,130,000,000
Accrued income and other assets	34,000,000	38,000,000	41,000,000
Total assets	2,169,000,000	2,324,000,000	4,237,000,000
Trust securities at fair value			1,660,000,000
Total liabilities		3,000,000	1,680,000,000
Discontinued Operations [Member] | Seller Note [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Portfolio loans at fair value			28,000,000
Discontinued Operations [Member] | Trust [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Portfolio loans at fair value			1,711,000,000
Trust accrued income and other assets at fair value			19,000,000
Trust accrued expense and other liabilities at fair value			17,000,000
Accrued expense and other liabilities		3,000,000	3,000,000
Discontinued Operations [Member] | Portfolio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Portfolio loans at fair value		$ 191,000,000	$ 209,000,000
Portfolio loans held for sale at fair value	$ 179,000,000

Acquisitions and Discontinue120

Acquisitions and Discontinued Operations - Combined Assets and Liabilities of Discontinued Operations (Parenthetical) (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Unearned income on loans	$ 657,000,000	$ 682,000,000	$ 709,000,000
Maximum [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Unearned income on loans	$ 1,000,000	$ 1,000,000	$ 1,000,000

Securities Financing Activit121

Securities Financing Activities - Summarized Securities Financing Agreements (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Securities Financing Transaction [Line Items]
Reverse repurchase agreements			$ 9
Securities borrowed			1
Total offsetting of financial assets			10
Collateral [Member]
Securities Financing Transaction [Line Items]
Reverse repurchase agreements		$ (2)	(315)
Securities borrowed			(23)
Total offsetting of financial assets		(2)	(338)
Repurchase agreements	$ (1)		(279)
Total offsetting of financial liabilities	(1)		(279)
Gross Amount Presented in Balance Sheet [Member]
Securities Financing Transaction [Line Items]
Reverse repurchase agreements	3	3	540
Securities borrowed			24
Total offsetting of financial assets	3	3	564
Repurchase agreements	4	1	495
Total offsetting of financial liabilities	4	1	495
Netting Adjustments [Member]
Securities Financing Transaction [Line Items]
Reverse repurchase agreements	(3)	(1)	(216)
Total offsetting of financial assets	(3)	(1)	(216)
Repurchase agreements	(3)	(1)	(216)
Total offsetting of financial liabilities	$ (3)	$ (1)	$ (216)

Employee Benefits - Net Pension

Employee Benefits - Net Pension Cost (Benefit) for Funded and Unfunded Plans (Detail) - Pension Plans [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Interest cost on PBO	$ 10	$ 12	$ 20	$ 24
Expected return on plan assets	(14)	(17)	(28)	(34)
Amortization of losses	5	4	9	8
Net benefit cost	$ 1	$ (1)	$ 1	$ (2)

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) - Other Postretirement Benefit Plans [Member]	6 Months Ended
	Jun. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Age of employees under condition one	55 years
Age of employees under condition two	50 years
Period of service under condition one	5 years
Period of service under condition two	15 years
Minimum period of service at the time of termination hired before 2001	15 years
Condition under retiree healthcare plan	We sponsor a retiree healthcare plan that all employees age 55 with five years of service (or employees age 50 with 15 years of service who are terminated under conditions that entitle them to a severance benefit) are eligible to participate.

Employee Benefits - Net Postret

Employee Benefits - Net Postretirement Benefit Cost for Funded and Unfunded Plans (Detail) - Other Postretirement Benefit Plans [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Interest cost on APBO	$ 1	$ 1	$ 2	$ 2
Expected return on plan assets		(1)	(1)	(2)
Amortization of unrecognized prior service credit	(1)		(1)
Net benefit cost	$ 0	$ 0	$ 0	$ 0

Trust Preferred Securities I125

Trust Preferred Securities Issued by Unconsolidated Subsidiaries - Additional Information (Detail) - Jun. 30, 2015 - USD ($) $ in Millions	Total
Trust Preferred Securities [Abstract]
Percentage of trust preferred securities issued by the KeyCorp of Tier 1 capital	9.00%
Trust preferred securities issued by the KeyCorp of Tier 1 capital	$ 85

Trust Preferred Securities I126

Trust Preferred Securities Issued by Unconsolidated Subsidiaries - Summary of Trust Preferred Securities, Common Stock and Related Debentures (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Stock	$ 1,017	$ 1,017	$ 1,017
KeyCorp Capital I [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	156
Common Stock	6
Principal Amount of Debentures, Net of Discount	$ 162
Interest Rate of Trust Preferred Securities and Debentures	1.014%
Maturity of Trust Preferred Securities and Debentures	2,028
KeyCorp Capital II [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 107
Common Stock	4
Principal Amount of Debentures, Net of Discount	$ 111
Interest Rate of Trust Preferred Securities and Debentures	6.875%
Maturity of Trust Preferred Securities and Debentures	2,029
KeyCorp Capital III [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 139
Common Stock	4
Principal Amount of Debentures, Net of Discount	$ 143
Interest Rate of Trust Preferred Securities and Debentures	7.75%
Maturity of Trust Preferred Securities and Debentures	2,029
Business Trusts [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 402	408	397
Common Stock	14	14	14
Principal Amount of Debentures, Net of Discount	$ 416	$ 422	$ 411
Interest Rate of Trust Preferred Securities and Debentures	4.903%	4.926%	4.856%

Trust Preferred Securities I127

Trust Preferred Securities Issued by Unconsolidated Subsidiaries - Summary of Trust Preferred Securities, Common Stock and Related Debentures (Parenthetical) (Detail) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust preferred securities adjustments related to fair value hedges	$ 62	$ 57	$ 68
Redemption price as the sum of the present values of principal and interest payments, if redeemed before maturity	The greater of: (i) the principal amount, plus any accrued but unpaid interest, or (ii) the sum of the present values of principal and interest payments discounted at the Treasury Rate (as defined in the applicable indenture), plus 20 basis points for KeyCorp Capital II or 25 basis points for KeyCorp Capital III or 50 basis points in the case of redemption upon either a tax or a capital treatment event for either KeyCorp Capital II or KeyCorp Capital III, plus any accrued but unpaid interest.
Debentures adjustments related to financial instrument hedging	$ 62	$ 57	$ 68
KeyCorp Capital I [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Floating interest rate	KeyCorp Capital II and KeyCorp Capital III are fixed. KeyCorp Capital I has a floating interest rate, equal to three-month LIBOR plus 74 basis points, that reprices quarterly.
Floating interest rate equal to three-month LIBOR plus percentage	0.74%

Contingent Liabilities and G128

Contingent Liabilities and Guarantees - Guarantees (Detail) $ in Millions	Jun. 30, 2015USD ($)
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	$ 14,743
Liability Recorded	154
Written Put Options [Member]
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	2,092
Liability Recorded	82
Standby Letters of Credit [Member]
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	10,933
Liability Recorded	64
Recourse Agreement with FNMA [Member]
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	1,714
Liability Recorded	4
Return Guarantee Agreement with LIHTC Investors [Member]
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	4
Liability Recorded	$ 4

Contingent Liabilities and G129

Contingent Liabilities and Guarantees - Additional Information (Detail) - Jun. 30, 2015 - USD ($)	Total
Commitments Contingencies And Guarantees [Line Items]
Weighted-average remaining term for outstanding commercial mortgage loans in years	7 years 10 months 24 days
Unpaid principal balance outstanding of loans sold	$ 6,000,000,000
Potential undiscounted future payments maximum limit	One-third of the principal balance of loans outstanding
Default guarantees, value	$ 154,000,000
Written Put Options [Member]
Commitments Contingencies And Guarantees [Line Items]
Default guarantees, value	$ 82,000,000
Weighted average life of written put options	2 years
Return Guarantee Agreement with LIHTC Investors [Member]
Commitments Contingencies And Guarantees [Line Items]
Compliance period of property	15 years
Default guarantees, value	$ 4,000,000
Expiration of guarantees
Standby Letters of Credit [Member]
Commitments Contingencies And Guarantees [Line Items]
Remaining weighted-average life of standby letters of credit in years	3 years
Remaining actual life letters of credit in years
Default guarantees, value	$ 64,000,000
Default Guarantees [Member]
Commitments Contingencies And Guarantees [Line Items]
Default guarantees, value	$ 0
Minimum [Member] | Low [Member]
Commitments Contingencies And Guarantees [Line Items]
Guarantee Obligations	0.00%
Minimum [Member] | Moderate [Member]
Commitments Contingencies And Guarantees [Line Items]
Guarantee Obligations	30.00%
Minimum [Member] | High [Member]
Commitments Contingencies And Guarantees [Line Items]
Guarantee Obligations	70.00%
Maximum [Member] | Low [Member]
Commitments Contingencies And Guarantees [Line Items]
Guarantee Obligations	30.00%
Maximum [Member] | Moderate [Member]
Commitments Contingencies And Guarantees [Line Items]
Guarantee Obligations	70.00%
Maximum [Member] | High [Member]
Commitments Contingencies And Guarantees [Line Items]
Guarantee Obligations	100.00%

Accumulated Other Comprehens130

Accumulated Other Comprehensive Income - Changes in AOCI (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (279)	$ (324)	$ (356)	$ (352)
Other comprehensive income before reclassification, net of income taxes	(56)	43	31	79
Amounts reclassified from accumulated other comprehensive income, net of income taxes(a)	(10)	(8)	(20)	(16)
Total other comprehensive income (loss), net of tax	(66)	35	11	63
Ending balance	(345)	(289)	(345)	(289)
Unrealized Gains (Losses) on Securities Available for Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	51	(34)	(4)	(63)
Other comprehensive income before reclassification, net of income taxes	(52)	28	3	57
Amounts reclassified from accumulated other comprehensive income, net of income taxes(a)	1		1
Total other comprehensive income (loss), net of tax	(51)	28	4	57
Ending balance		(6)		(6)
Unrealized Gains (Losses) on Derivative Financial Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	24	(12)	(8)	(11)
Other comprehensive income before reclassification, net of income taxes	(3)	15	42	22
Amounts reclassified from accumulated other comprehensive income, net of income taxes(a)	(14)	(10)	(27)	(18)
Total other comprehensive income (loss), net of tax	(17)	5	15	4
Ending balance	7	(7)	7	(7)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	9	40	22	42
Other comprehensive income before reclassification, net of income taxes	(1)		(14)
Amounts reclassified from accumulated other comprehensive income, net of income taxes(a)	1	(1)	1	(3)
Total other comprehensive income (loss), net of tax		(1)	(13)	(3)
Ending balance	9	39	9	39
Net Pension and Postretirement Benefit Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(363)	(318)	(366)	(320)
Amounts reclassified from accumulated other comprehensive income, net of income taxes(a)	2	3	5	5
Total other comprehensive income (loss), net of tax	2	3	5	5
Ending balance	$ (361)	$ (315)	$ (361)	$ (315)

Accumulated Other Comprehens131

Accumulated Other Comprehensive Income - Reclassifications Out of AOCI (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Corporate services income	$ 43	$ 41	$ 86	$ 83
Income taxes	(84)	(76)	(158)	(168)
Income (loss) from continuing operations	236	253	466	491
Personnel expense	(408)	(389)	(797)	(777)
Interest income - Loans	532	526	1,055	1,045
Interest expense - Long term debt	(40)	(33)	(77)	(65)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Securities Available for Sale [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income taxes	(1)		(1)
Income (loss) from continuing operations	(1)		(1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Securities Available for Sale [Member] | Realized Losses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income	(1)		(1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Derivative Financial Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income taxes	22	14	43	28
Income taxes	8	4	16	10
Income (loss) from continuing operations	14	10	27	18
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Derivative Financial Instruments [Member] | Interest Rate [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income - Loans	23	16	45	31
Interest expense - Long term debt	(1)	(1)	(2)	(2)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Derivative Financial Instruments [Member] | Foreign Exchange [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income		(1)		(1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Corporate services income	(1)		(1)	3
Income (loss) from continuing operations before income taxes	(1)		(1)	3
Income taxes		(1)
Income (loss) from continuing operations	(1)	1	(1)	3
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Pension and Postretirement Benefit Costs [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income taxes	(4)	(4)	(8)	(8)
Income taxes	(2)	(1)	(3)	(3)
Income (loss) from continuing operations	(2)	(3)	(5)	(5)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Pension and Postretirement Benefit Costs [Member] | Amortization of Losses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Personnel expense	(5)	$ (4)	(9)	$ (8)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Pension and Postretirement Benefit Costs [Member] | Amortization Of Unrecognized Prior Service Cost [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Personnel expense	$ 1		$ 1

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash dividends declared on common shares, per share	$ 0.075	$ 0.065	$ 0.140	$ 0.120
2015 Capital Plan [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Repurchase of common stock	$ 725,000,000		$ 725,000,000
Stock repurchase program authorized amount	$ 129,000,000
Cash dividends declared on common shares, per share	$ 0.075		$ 0.065
Proposed increase in cash dividends declared on common shares, per share			0.075
2016 [Member] | 2015 Capital Plan [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Proposed increase in cash dividends declared on common shares, per share			$ 0.085

Line of Business Results - Addi

Line of Business Results - Additional Information (Detail) - Jun. 30, 2015	IndustryBranch
Nature Of Operations [Abstract]
Number of state branch network	12
Number of business units | Industry	7
Federal income tax rate	35.00%
State income tax rate	2.20%

Line of Business Results - Fina

Line of Business Results - Financial Information of Business Groups (Detail) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015USD ($)Employees	Jun. 30, 2014USD ($)Employees	Jun. 30, 2015USD ($)Employees	Jun. 30, 2014USD ($)Employees	Dec. 31, 2014USD ($)
Segment Reporting Information [Line Items]
Net interest income (TE)	$ 584	$ 573	$ 1,155	$ 1,136
Noninterest income	488	455	925	890
Provision for credit losses			67	25	$ 10
Other noninterest expense	86	85	170	162
Allocated income taxes and TE adjustments	84	76	158	168
Income (loss) from continuing operations	236	253	466	491
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(24)
Net income (loss)	239	225	474	467
Less: Net income (loss) attributable to noncontrolling interests	1	6	3	6
Net income (loss) attributable to Key	238	219	471	461
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net interest income (TE)	589	577	1,164	1,146
Noninterest income	491	458	933	892
Total revenue (TE)	1,080	1,035	2,097	2,038
Provision for credit losses	41	13	75	17
Depreciation and amortization expense	27	26	54	54
Other noninterest expense	689	644	1,332	1,280
Income (loss) from continuing operations before income taxes	323	352	636	687
Allocated income taxes and TE adjustments	91	104	180	203
Income (loss) from continuing operations	232	248	456	484
Net income (loss)	232	248	456	484
Less: Net income (loss) attributable to noncontrolling interests	1	6	3	6
Net income (loss) attributable to Key	231	242	453	478
AVERAGE BALANCES
Loans and leases	57,908	55,535	57,669	55,120
Total assets	91,009	86,036	89,986	85,518
Deposits	70,916	67,224	70,187	66,853
OTHER FINANCIAL DATA
Net loan charge-offs	$ 35	$ 31	$ 64	$ 51
Return on average allocated equity	19.05%	20.55%	18.50%	20.12%
Return on average allocated equity	19.05%	20.55%	18.50%	20.12%
Operating Segments [Member] | Weighted Average [Member]
OTHER FINANCIAL DATA
Average full-time equivalent employees | Employees	9,472	9,555	9,498	9,620
Operating Segments [Member] | Key Community Bank [Member]
Segment Reporting Information [Line Items]
Net interest income (TE)	$ 362	$ 361	$ 720	$ 724
Noninterest income	197	192	388	375
Total revenue (TE)	559	553	1,108	1,099
Provision for credit losses	7	25	36	36
Depreciation and amortization expense	14	16	29	34
Other noninterest expense	435	427	860	846
Income (loss) from continuing operations before income taxes	103	85	183	183
Allocated income taxes and TE adjustments	38	32	68	68
Income (loss) from continuing operations	65	53	115	115
Net income (loss)	65	53	115	115
Net income (loss) attributable to Key	65	53	115	115
AVERAGE BALANCES
Loans and leases	30,707	30,034	30,684	29,916
Total assets	32,758	32,132	32,737	32,025
Deposits	50,766	50,232	50,592	50,073
OTHER FINANCIAL DATA
Net loan charge-offs	$ 20	$ 33	$ 49	$ 61
Return on average allocated equity	9.75%	7.83%	8.57%	8.41%
Return on average allocated equity	9.75%	7.83%	8.57%	8.41%
Operating Segments [Member] | Key Community Bank [Member] | Weighted Average [Member]
OTHER FINANCIAL DATA
Average full-time equivalent employees | Employees	7,400	7,569	7,426	7,633
Operating Segments [Member] | Key Corporate Bank [Member]
Segment Reporting Information [Line Items]
Net interest income (TE)	$ 227	$ 210	$ 440	$ 406
Noninterest income	250	185	438	380
Total revenue (TE)	477	395	878	786
Provision for credit losses	38	(4)	46	(7)
Depreciation and amortization expense	11	7	20	14
Other noninterest expense	241	200	447	394
Income (loss) from continuing operations before income taxes	187	192	365	385
Allocated income taxes and TE adjustments	52	54	101	111
Income (loss) from continuing operations	135	138	264	274
Net income (loss)	135	138	264	274
Less: Net income (loss) attributable to noncontrolling interests		3	2	2
Net income (loss) attributable to Key	135	135	262	272
AVERAGE BALANCES
Loans and leases	25,298	22,886	25,012	22,441
Total assets	31,228	28,007	30,765	27,591
Deposits	19,708	16,357	19,141	16,175
OTHER FINANCIAL DATA
Net loan charge-offs	$ 12	$ (2)	$ 8	$ (14)
Return on average allocated equity	30.15%	35.72%	28.89%	35.87%
Return on average allocated equity	30.15%	35.72%	28.89%	35.87%
Operating Segments [Member] | Key Corporate Bank [Member] | Weighted Average [Member]
OTHER FINANCIAL DATA
Average full-time equivalent employees | Employees	2,058	1,940	2,057	1,928
Operating Segments [Member] | Other Segments [Member]
Segment Reporting Information [Line Items]
Net interest income (TE)		$ 6	$ 4	$ 16
Noninterest income	$ 44	81	107	137
Total revenue (TE)	44	87	111	153
Provision for credit losses	(4)	(8)	(7)	(12)
Depreciation and amortization expense	2	3	5	6
Other noninterest expense	13	17	25	40
Income (loss) from continuing operations before income taxes	33	75	88	119
Allocated income taxes and TE adjustments	1	18	11	24
Income (loss) from continuing operations	32	57	77	95
Net income (loss)	32	57	77	95
Less: Net income (loss) attributable to noncontrolling interests	1	3	1	4
Net income (loss) attributable to Key	31	54	76	91
AVERAGE BALANCES
Loans and leases	1,903	2,615	1,973	2,763
Total assets	27,023	25,897	26,484	25,902
Deposits	442	$ 635	454	605
OTHER FINANCIAL DATA
Net loan charge-offs	$ 3		$ 7	$ 4
Return on average allocated equity	31.72%	43.93%	37.94%	36.41%
Return on average allocated equity	31.72%	43.93%	37.94%	36.41%
Operating Segments [Member] | Other Segments [Member] | Weighted Average [Member]
OTHER FINANCIAL DATA
Average full-time equivalent employees | Employees	14	46	15	59
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Net interest income (TE)	$ 2	$ 2	$ 4	$ 2
Noninterest income	(3)	(3)	(8)	(2)
Total revenue (TE)	(1)	(1)	(4)
Provision for credit losses		(1)	1	(1)
Depreciation and amortization expense	38	38	75	76
Other noninterest expense	(43)	(21)	(81)	(59)
Income (loss) from continuing operations before income taxes	4	(17)	1	(16)
Allocated income taxes and TE adjustments		(22)	(9)	(23)
Income (loss) from continuing operations	4	5	10	7
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(24)
Net income (loss)	7	(23)	18	(17)
Net income (loss) attributable to Key	7	(23)	18	(17)
AVERAGE BALANCES
Loans and leases	70	76	77	61
Total assets	650	705	664	684
Deposits	(78)	(101)	$ (80)	(142)
OTHER FINANCIAL DATA
Net loan charge-offs	$ 1	$ (1)		$ (1)
Return on average allocated equity	0.28%	0.35%	0.36%	0.25%
Return on average allocated equity	0.49%	(1.61%)	0.64%	(0.61%)
Segment Reconciling Items [Member] | Weighted Average [Member]
OTHER FINANCIAL DATA
Average full-time equivalent employees | Employees	3,983	4,312	4,014	4,341
Operating Segments and Reconciling Items [Member]
Segment Reporting Information [Line Items]
Net interest income (TE)	$ 591	$ 579	$ 1,168	$ 1,148
Noninterest income	488	455	925	890
Total revenue (TE)	1,079	1,034	2,093	2,038
Provision for credit losses	41	12	76	16
Depreciation and amortization expense	65	64	129	130
Other noninterest expense	646	623	1,251	1,221
Income (loss) from continuing operations before income taxes	327	335	637	671
Allocated income taxes and TE adjustments	91	82	171	180
Income (loss) from continuing operations	236	253	466	491
Income (loss) from discontinued operations, net of taxes	3	(28)	8	(24)
Net income (loss)	239	225	474	467
Less: Net income (loss) attributable to noncontrolling interests	1	6	3	6
Net income (loss) attributable to Key	238	219	471	461
AVERAGE BALANCES
Loans and leases	57,978	55,611	57,746	55,181
Total assets	91,659	86,741	90,650	86,202
Deposits	70,838	67,123	70,107	66,711
OTHER FINANCIAL DATA
Net loan charge-offs	$ 36	$ 30	$ 64	$ 50
Return on average allocated equity	8.90%	9.47%	4.38%	4.66%
Return on average allocated equity	9.01%	8.40%	4.45%	4.43%
Operating Segments and Reconciling Items [Member] | Weighted Average [Member]
OTHER FINANCIAL DATA
Average full-time equivalent employees | Employees	13,455	13,867	13,512	13,961