Wells Fargo & Company (WFC) 10-Q 5 May 17 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 26, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	WELLS FARGO & COMPANY/MN
Entity Central Index Key	72,971
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		4,997,318,006

Consolidated Statement of Incom

Consolidated Statement of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Interest income
Trading assets		$ 643	$ 596
Investment securities		2,675	2,262
Mortgages held for sale		184	161
Loans held for sale		1	2
Loans		10,141	9,577
Other interest income		582	374
Total interest income		14,226	12,972
Interest expense
Deposits		537	307
Short-term borrowings		114	67
Long-term debt		1,183	842
Other interest expense		92	89
Total interest expense		1,926	1,305
Net interest income		12,300	11,667
Provision for credit losses		605	1,086
Net interest income after provision for credit losses		11,695	10,581
Noninterest income
Service charges on deposit accounts		1,313	1,309
Trust and investment fees		3,570	3,385
Card fees		945	941
Other fees		865	933
Mortgage banking		1,228	1,598
Insurance		277	427
Net gains from trading activities		439	200
Net gains on debt securities	[1]	36	244
Net gains from equity investments	[2]	403	244
Lease income		481	373
Other		145	874
Total noninterest income		9,702	10,528
Noninterest expense
Salaries		4,261	4,036
Commission and incentive compensation		2,725	2,645
Employee benefits		1,686	1,526
Equipment		577	528
Net occupancy		712	711
Core deposit and other intangibles		289	293
FDIC and other deposit assessments		333	250
Other		3,209	3,039
Total noninterest expense		13,792	13,028
Income before income tax expense		7,605	8,081
Income tax expense		2,057	2,567
Net income before noncontrolling interests		5,548	5,514
Less: Net income from noncontrolling interests		91	52
Wells Fargo net income		5,457	5,462
Less: Preferred stock dividends and other		401	377
Wells Fargo net income applicable to common stock		$ 5,056	$ 5,085
Per share information
Earnings per common share (in dollars per share)		$ 1.01	$ 1
Diluted earnings per common share (in dollars per share)		1	0.99
Dividends declared per common share (in dollars per share)		$ 0.380	$ 0.375
Average common shares outstanding (in shares)		5,008.6	5,075.7
Diluted average common shares outstanding (in shares)		5,070.4	5,139.4
[1]	(1)Total other-than-temporary impairment (OTTI) losses were $43 million and $76 million for first quarter 2017 and 2016, respectively. Of total OTTI, losses of $52 million and $65 million were recognized in earnings, and losses (reversal of losses) of $(9) million and $11 million were recognized as non-credit-related OTTI in other comprehensive income for first quarter 2017 and 2016, respectively.
[2]	(2)Includes OTTI losses of $77 million and $133 million for first quarter 2017 and 2016, respectively.

Consolidated Statement of Inco3

Consolidated Statement of Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Noninterest income
Total recorded as part of gross realized losses	$ 53	$ 69
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Equity Securities and Nonmarketable Equity Securities	77	133
Total debt securities [Member]
Noninterest income
Total OTTI losses (reversal of losses) recorded on debt securities	43	76
Total recorded as part of gross realized losses	52	65
Total reversal of losses recognized in OCI as non-credit-related impairment	$ (9)	$ 11

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Wells Fargo net income	$ 5,457	$ 5,462
Investment securities:
Net unrealized gains arising during the period	369	795
Reclassification of net gains to net income	(145)	(304)
Derivatives and hedging activities:
Net unrealized gains (losses) arising during the period	(133)	1,999
Reclassification of net gains on cash flow hedges to net income	(202)	(256)
Defined benefit plans adjustments:
Net actuarial and prior service losses arising during the period	(7)	(8)
Amortization of net actuarial loss, settlements and other to net income	38	37
Foreign currency translation adjustments:
Net unrealized gains arising during the period	16	43
Other comprehensive income (loss), before tax	(64)	2,306
Income tax (expense) benefit related to other comprehensive income	37	(857)
Other comprehensive income (loss), net of tax	(27)	1,449
Less: Other comprehensive income (loss) from noncontrolling interests	14	(28)
Wells Fargo other comprehensive income (loss), net of tax	(41)	1,477
Wells Fargo comprehensive income	5,416	6,939
Comprehensive income from noncontrolling interests	105	24
Total comprehensive income	$ 5,521	$ 6,963

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 19,698	$ 20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		308,747	266,038
Trading assets		80,326	74,397
Investment securities:
Available-for-sale Securities		299,530	308,364
Held-to-maturity, at cost (fair value $107,629 and $99,155)		108,030	99,583
Mortgages held for sale (includes $14,018 and $22,042 carried at fair value)	[1]	17,822	26,309
Loans held for sale		253	80
Loans (includes $505 and $758 carried at fair value)	[1]	958,405	967,604
Allowance for loan losses		(11,168)	(11,419)
Net loans		947,237	956,185
Mortgage servicing rights:
Measured at fair value		13,208	12,959
Amortized		1,402	1,406
Premises and equipment, net		8,320	8,333
Goodwill		26,666	26,693
Net amounts in consolidated balance sheet, assets		12,564	14,498
Other assets (includes $3,780 and $3,275 carried at fair value)	[1]	107,761	114,541
Total assets	[2]	1,951,564	1,930,115
Liabilities
Noninterest-bearing deposits		365,780	375,967
Interest-bearing deposits		959,664	930,112
Total deposits		1,325,444	1,306,079
Short-term borrowings		94,871	96,781
Net amounts in consolidated balance sheet, liabilities		12,461	14,492
Accrued expenses and other liabilities		59,831	57,189
Long-term debt		256,468	255,077
Total liabilities	[3]	1,749,075	1,729,618
Wells Fargo stockholders' equity:
Preferred stock		25,501	24,551
Common stock – $1-2/3 par value, authorized 9,000,000,000 shares; issued 5,481,811,474 shares		9,136	9,136
Additional paid-in capital		60,585	60,234
Retained earnings		136,032	133,075
Cumulative other comprehensive income		(3,178)	(3,137)
Treasury stock – 485,076,875 shares and 465,702,148 shares		(24,030)	(22,713)
Unearned ESOP shares		(2,546)	(1,565)
Total Wells Fargo stockholders' equity		201,500	199,581
Noncontrolling interests		989	916
Total equity		202,489	200,497
Total liabilities and equity		$ 1,951,564	$ 1,930,115
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.
[2]	Our consolidated assets at March 31, 2017, and December 31, 2016, include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash and due from banks, $128 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $485 million and $74 million; Trading assets, $126 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $13.1 billion and $12.6 billion; Derivative assets, $1 million and $1 million; Other assets, $361 million and $452 million; and Total assets, $14.2 billion and $13.4 billion, respectively.
[3]	Our consolidated liabilities at March 31, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $30 million and $33 million; Accrued expenses and other liabilities, $103 million and $107 million; Long-term debt, $3.6 billion and $3.7 billion; and Total liabilities, $3.8 billion at both period ends, respectively.

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 19,698	$ 20,729
Federal Funds Sold Securities Purchased Under Resale Agreements And Other Short Term Investments		308,747	266,038
Trading Assets		80,326	74,397
Investment securities		407,159	407,519
Held-to-maturity, at fair value		107,629	99,155
Mortgages held for sale, carried at fair value		14,018	22,042
Loans Receivable, Fair Value Disclosure		505	758
Net loans		947,237	956,185
Net amounts in consolidated balance sheet, assets		12,564	14,498
Other assets	[1]	107,761	114,541
Other assets, carried at fair value		3,780	3,275
Liabilities
Accrued expenses and other liabilities		59,831	57,189
Long-term debt		256,468	255,077
Total liabilities	[2]	1,749,075	1,729,618
Wells Fargo stockholders' equity:
Total assets	[3]	$ 1,951,564	$ 1,930,115
Common stock, par value		$ 1.6666	$ 1.6667
Common stock, shares issued		5,481,811,474	5,481,811,474
Common stock, shares authorized		9,000,000,000	9,000,000,000
Treasury stock, shares		485,076,875	465,702,148
Net amounts in consolidated balance sheet, liabilities		$ 12,461	$ 14,492
VIEs that we consolidate [Member]
Assets
Cash and due from banks		128	168
Federal Funds Sold Securities Purchased Under Resale Agreements And Other Short Term Investments		485	74
Trading Assets		126	130
Investment securities		0	0
Net loans		13,100	12,600
Net amounts in consolidated balance sheet, assets		1	1
Other assets		361	452
Liabilities
Accrued expenses and other liabilities		103	107
Long-term debt		3,640	3,694
Total liabilities		3,773	3,834
Wells Fargo stockholders' equity:
Total assets		14,157	13,414
Net amounts in consolidated balance sheet, liabilities		30	33
Vies That We Consolidate No Recourse [Member]
Liabilities
Accrued expenses and other liabilities		103	107
Long-term debt		3,600	3,700
Total liabilities		$ 3,800	$ 3,800
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.
[2]	Our consolidated liabilities at March 31, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $30 million and $33 million; Accrued expenses and other liabilities, $103 million and $107 million; Long-term debt, $3.6 billion and $3.7 billion; and Total liabilities, $3.8 billion at both period ends, respectively.
[3]	Our consolidated assets at March 31, 2017, and December 31, 2016, include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash and due from banks, $128 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $485 million and $74 million; Trading assets, $126 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $13.1 billion and $12.6 billion; Derivative assets, $1 million and $1 million; Other assets, $361 million and $452 million; and Total assets, $14.2 billion and $13.4 billion, respectively.

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity (Unaudited) - USD ($) $ in Millions		Total	Total Wells Fargo stockholders' equity [Member]	Preferred stock [Member]	Common stock [Member]	Additional paid-in capital [Member]	Retained Earnings [Member]	Cumulative other comprehensive income [Member]	Treasury stock [Member]	Unearned ESOP Shares [Member]	Noncontrolling interests [Member]
Stockholders' Equity Period Increase (Decrease)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance		$ 194,012	$ 192,998	$ 22,214	$ 9,136	$ 60,714	$ 120,866	$ 297	$ (18,867)	$ (1,362)	$ 1,014
Beginning balance at Dec. 31, 2015		193,891									893
Beginning balance, shares at Dec. 31, 2015				11,259,917	5,092,128,810
Stockholders' Equity Period Increase (Decrease)
Net income		5,462	5,462				5,462
Net income attributable to noncontrolling interests		52									52
Net income		5,514
Other comprehensive income (loss) attributable to parent, net of tax		1,477	1,477					1,477
Other comprehensive income (loss) attributable to noncontrolling interest, net of tax		(28)									(28)
Other comprehensive income (loss), net of tax		1,449
Noncontrolling interests, adjustments to Additional Paid in Capital			1			1
Noncontrolling interests											(30)
Total change in noncontrolling interests		(29)
Common stock issued		1,079	1,079			(160)	(140)		1,379
Common stock, shares issued					28,984,457
Common stock repurchased		(2,029)	(2,029)			500			(2,529)
Common stock repurchased, shares					(51,674,544)
Preferred stock issued to ESOP		0	0	$ 1,150		99				(1,249)
Preferred stock issued to ESOP, shares				1,150,000
Preferred stock released by ESOP		313	313			(27)				340
Preferred stock converted to common shares		0	0	$ (313)		1			312
Preferred stock converted to common shares, shares				(312,927)	6,464,167
Common stock warrants repurchased/exercised		0	0			0
Preferred stock issued		975	975	$ 1,000		(25)
Preferred stock, shares issued				40,000
Common stock dividends		(1,904)	(1,904)			15	(1,919)
Preferred stock dividends		(378)	(378)				(378)
Tax benefit from stock incentive compensation		149	149			149
Stock incentive compensation expense		369	369			369
Net change in deferred compensation and related plans		(1,016)	(1,016)			(1,034)			18
Net change		4,492	4,498	$ 1,837	$ 0	(112)	3,025	1,477	(820)	(909)	(6)
Net change, shares				877,073	(16,225,920)
Ending balance at Mar. 31, 2016		198,504	197,496	$ 24,051	$ 9,136	60,602	123,891	1,774	(19,687)	(2,271)	1,008
Ending balance, shares at Mar. 31, 2016				12,136,990	5,075,902,890
Beginning balance at Dec. 31, 2016		200,497	199,581	$ 24,551	$ 9,136	60,234	133,075	(3,137)	(22,713)	(1,565)	916
Beginning balance, shares at Dec. 31, 2016				11,532,712	5,016,109,326
Stockholders' Equity Period Increase (Decrease)
Net income		5,457	5,457				5,457
Net income attributable to noncontrolling interests		91									91
Net income		5,548
Other comprehensive income (loss) attributable to parent, net of tax		(41)	(41)					(41)
Other comprehensive income (loss) attributable to noncontrolling interest, net of tax		14									14
Other comprehensive income (loss), net of tax		(27)
Noncontrolling interests, adjustments to Additional Paid in Capital			2			2
Noncontrolling interests											(32)
Total change in noncontrolling interests		(30)
Common stock issued		1,406	1,406			3	(184)		1,587
Common stock, shares issued					33,699,497
Common stock repurchased		(2,175)	(2,175)			750			(2,925)
Common stock repurchased, shares					(53,074,224)
Preferred stock issued to ESOP		0	0	$ 950		31				(981)
Preferred stock issued to ESOP, shares				950,000
Preferred stock released by ESOP		0	0			0				0
Preferred stock converted to common shares		0	0	$ 0		0			0
Preferred stock converted to common shares, shares				0	0
Common stock warrants repurchased/exercised		(44)	(44)			(44)
Preferred stock issued		0	0	$ 0		0
Preferred stock, shares issued				0
Common stock dividends		(1,903)	(1,903)			12	(1,915)
Preferred stock dividends		(401)	(401)				(401)
Tax benefit from stock incentive compensation	[1]	0	0			0
Stock incentive compensation expense		389	389			389
Net change in deferred compensation and related plans		(771)	(771)			(792)			21
Net change		1,992	1,919	$ 950	$ 0	351	2,957	(41)	(1,317)	(981)	73
Net change, shares				950,000	(19,374,727)
Ending balance at Mar. 31, 2017		$ 202,489	$ 201,500	$ 25,501	$ 9,136	$ 60,585	$ 136,032	$ (3,178)	$ (24,030)	$ (2,546)	$ 989
Ending balance, shares at Mar. 31, 2017				12,482,712	4,996,734,599
[1]	(2)Effective January 1, 2017, we adopted Accounting Standards Update 2016-09 (Improvements to Employee Share-Based Payment Accounting). Accordingly, tax benefit from stock incentive compensation is reported in income tax expense in the consolidated statement of income.

Consolidated Statement of Chan8

Consolidated Statement of Changes in Equity (Unaudited) (Parenthetical) $ in Millions	Jan. 01, 2016USD ($)
Noncontrolling Interest [Member]
Consolidated Statement of Changes in Equity (Textuals) [Abstract]
Cumulative effect from change in consolidation accounting	$ 121	[1]
[1]	(1)Effective January 1, 2016, we adopted changes in consolidation accounting pursuant to ASU 2015-02 (Amendments to the Consolidation Analysis). Accordingly, we recorded a $121 million increase to beginning noncontrolling interests as a cumulative-effect adjustment.

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income before noncontrolling interests		$ 5,548	$ 5,514
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses		605	1,086
Changes in fair value of MSRs, MHFS and LHFS carried at fair value		8	883
Depreciation, amortization and accretion		1,237	1,295
Other net (gains) losses		(961)	1,855
Stock-based compensation		740	716
Originations and purchases of MHFS and LHFS (1)	[1]	(37,675)	(37,114)
Proceeds from sales of and paydowns on mortgages originated for sale and LHFS (1)	[1]	25,270	29,605
Net change in:
Trading assets (1)	[1]	14,721	12,234
Deferred income taxes		1,007	(1,240)
Derivative assets and liabilities (1)	[1]	(481)	292
Other assets (1)	[1]	3,553	(10,202)
Other accrued expenses and liabilities (1)	[1]	(381)	990
Net cash provided by operating activities		13,191	5,914
Net change in:
Federal funds sold, securities purchased under resale agreements and other short-term investments		(39,716)	(30,518)
Available-for-sale securities:
Sales proceeds		3,231	13,058
Prepayments and maturities		11,016	6,651
Purchases		(14,495)	(5,321)
Held-to-maturity securities:
Paydowns and maturities		1,470	997
Nonmarketable equity investments:
Sales proceeds		1,016	529
Purchases		(442)	(995)
Loans:
Loans originated by banking subsidiaries, net of principal collected		5,153	(9,798)
Proceeds from sales (including participations) of loans held for investment		2,504	2,134
Purchases (including participations) of loans		(1,148)	(727)
Principal collected on nonbank entities’ loans		3,881	3,376
Loans originated by nonbank entities		(3,050)	(2,875)
Net cash paid for acquisitions		(46)	(28,904)
Proceeds from sales of foreclosed assets and short sales		1,519	1,859
Other, net (1)	[1]	(166)	168
Net cash used by investing activities		(29,273)	(50,366)
Net change in:
Deposits		19,365	18,178
Short-term borrowings		(1,064)	10,175
Long-term debt:
Proceeds from issuance		12,975	23,934
Repayment		(11,937)	(4,523)
Preferred stock:
Proceeds from issuance		0	975
Cash dividends paid		(408)	(386)
Common stock:
Proceeds from issuance		572	479
Stock tendered for payment of withholding taxes (1)	[1]	(359)	(468)
Repurchased		(2,175)	(2,029)
Cash dividends paid		(1,859)	(1,858)
Net change in noncontrolling interests		(30)	(32)
Other, net		(29)	(20)
Net cash provided by financing activities		15,051	44,425
Net change in cash and due from banks		(1,031)	(27)
Cash and due from banks at beginning of period		20,729	19,111
Cash and due from banks at end of period		19,698	19,084
Supplemental cash flow disclosures:
Cash paid for interest		1,612	1,054
Cash paid for income taxes		$ 215	$ 138
[1]	Prior periods have been revised to conform to the current period presentation.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1: Summary of Significant Accounting Policies Wells Fargo & Company is a diversified financial services company. We provide banking, insurance, trust and investments, mortgage banking, investment banking, retail banking, brokerage, and consumer and commercial finance through branches, the internet and other distribution channels to consumers, businesses and institutions in all 50 states, the District of Columbia, and in foreign countries. When we refer to “Wells Fargo,” “the Company,” “we,” “our” or “us,” we mean Wells Fargo & Company and Subsidiaries (consolidated). Wells Fargo & Company (the Parent) is a financial holding company and a bank holding company. We also hold a majority interest in a real estate investment trust, which has publicly traded preferred stock outstanding. Our accounting and reporting policies conform with U.S. generally accepted accounting principles (GAAP) and practices in the financial services industry. For discussion of our significant accounting policies, see Note 1 (Summary of Significant Accounting Policies) in our Annual Report on Form 10-K for the year ended December 31, 2016 ( 2016 Form 10-K). There were no material changes to these policies in the first quarter 2017 . To prepare the financial statements in conformity with GAAP, management must make estimates based on assumptions about future economic and market conditions (for example, unemployment, market liquidity, real estate prices, etc.) that affect the reported amounts of assets and liabilities at the date of the financial statements, income and expenses during the reporting period and the related disclosures. Although our estimates contemplate current conditions and how we expect them to change in the future, it is reasonably possible that actual conditions could be worse than anticipated in those estimates, which could materially affect our results of operations and financial condition. Management has made significant estimates in several areas, including allowance for credit losses and purchased credit-impaired (PCI) loans (Note 5 (Loans and Allowance for Credit Losses)), valuations of residential mortgage servicing rights (MSRs) (Note 7 (Securitizations and Variable Interest Entities) and Note 8 (Mortgage Banking Activities)) and financial instruments (Note 13 (Fair Values of Assets and Liabilities)), and income taxes. Actual results could differ from those estimates. These unaudited interim financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. The interim financial information should be read in conjunction with our 2016 Form 10-K. Accounting Standards Adopted in 2017 In first quarter 2017 , we adopted the following new accounting guidance: • Accounting Standards Update (ASU or Update) 2016-09 – Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting; • ASU 2016-07 - Investments - Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting; • ASU 2016-06 - Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments; and • ASU 2016-05 - Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. ASU 2016-09 Simplifies the accounting for share-based payment awards issued to employees. We have income tax effects based on changes in our stock price from the grant date to the vesting date of the employee stock compensation. The Update requires these income tax effects to be recognized in the statement of income within income tax expense instead of within additional paid-in capital. In addition, the Update requires changes to the Statement of Cash Flows including the classification between the operating and financing section for tax activity related to employee stock compensation, which we adopted retrospectively. We recorded excess tax benefits and tax deficiencies within income tax expense in the statement of income in first quarter 2017, on a prospective basis. ASU 2016-07 eliminates the requirement for companies to retroactively apply the equity method of accounting for investments when increases in ownership interests or degree of influence result in the adoption of the equity method. Under the guidance, the equity method should be applied prospectively in the period in which the ownership changes occur. We adopted this change in first quarter 2017. The Update did not impact our consolidated financial statements, as the standard is applied on a prospective basis. ASU 2016-06 clarifies the criteria entities should use when evaluating whether embedded contingent put and call options in debt instruments should be separated from the debt instrument and accounted for separately as derivatives. The Update clarifies that companies should not consider whether the event that triggers the ability to exercise put or call options is related to interest rates or credit risk. We adopted this change in first quarter 2017. The Update did not have a material impact on our consolidated financial statements. ASU 2016-05 clarifies that a change in the counterparty to a derivative instrument that has been designated as an accounting hedge does not require the hedging relationship to be dedesignated as long as all other hedge accounting criteria continue to be met. We adopted the guidance in first quarter 2017. The Update did not have a material impact on our consolidated financial statements. Accounting Standards with Retrospective Application The following accounting pronouncement has been issued by the FASB but is not yet effective: • ASU 2016-15 – Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice for reporting in the Statement of Cash Flows. The Update is effective for us in first quarter 2018 with retrospective application. We are evaluating the impact the Update will have on our consolidated financial statements. Private Share Repurchases From time to time we enter into private forward repurchase transactions with unrelated third parties to complement our open-market common stock repurchase strategies, to allow us to manage our share repurchases in a manner consistent with our capital plans submitted annually under the Comprehensive Capital Analysis and Review (CCAR) and to provide an economic benefit to the Company. Our payments to the counterparties for these contracts are recorded in permanent equity in the quarter paid and are not subject to re-measurement. The classification of the up-front payments as permanent equity assures that we have appropriate repurchase timing consistent with our capital plans, which contemplate a fixed dollar amount available per quarter for share repurchases pursuant to Federal Reserve Board (FRB) supervisory guidance. In return, the counterparty agrees to deliver a variable number of shares based on a per share discount to the volume-weighted average stock price over the contract period. There are no scenarios where the contracts would not either physically settle in shares or allow us to choose the settlement method. Our total number of outstanding shares of common stock is not reduced until settlement of the private share repurchase contract. We had no unsettled private share repurchase contracts at both March 31, 2017 and March 31, 2016 . SUPPLEMENTAL CASH FLOW INFORMATION Significant noncash activities are presented below. Table 1.1: Supplemental Cash Flow Information Quarter ended March 31, (in millions) 2017 2016 Trading assets retained from securitization of MHFS $ 20,929 9,955 Transfers from loans to MHFS 1,657 1,839 Transfers from available-for-sale to held-to-maturity securities 9,897 — SUBSEQUENT EVENTS We have evaluated the effects of events that have occurred subsequent to March 31, 2017 , and there have been no material events that would require recognition in our first quarter 2017 consolidated financial statements or disclosure in the Notes to the consolidated financial statements.

Business Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2017
Business Combinations [Abstract]
Business Combinations	Note 2: Business Combinations We regularly explore opportunities to acquire financial services companies and businesses. Generally, we do not make a public announcement about an acquisition opportunity until a definitive agreement has been signed. For information on additional contingent consideration related to acquisitions, which is considered to be a guarantee, see Note 10 (Guarantees, Pledged Assets and Collateral). During first quarter 2017 , we finalized the related purchase accounting of our 2016 acquisition of GE Capital's Commercial Distribution Finance and Vendor Finance businesses. We completed no acquisitions during first quarter 2017 , and had no business combinations pending as of March 31, 2017 .

Federal Funds Sold, Securities

Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments	3 Months Ended
	Mar. 31, 2017
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Abstract]
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments	Note 3: Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Table 3.1 provides the detail of federal funds sold, securities purchased under short-term resale agreements (generally less than one year) and other short-term investments. Substantially all of the interest-earning deposits at March 31, 2017 , and December 31, 2016 , were held at Federal Reserve Banks. Table 3.1: Fed Funds Sold and Other Short-Term Investments (in millions) Mar 31, Dec 31, Federal funds sold and securities purchased under resale agreements $ 68,457 58,215 Interest-earning deposits 227,635 200,671 Other short-term investments 12,655 7,152 Total $ 308,747 266,038 As part of maintaining our memberships in certain clearing organizations, we are required to stand ready to provide liquidity meant to sustain market clearing activity in the event unforeseen events occur or are deemed likely to occur. This includes commitments we have entered into to purchase securities under resale agreements from a central clearing organization that, at its option, require us to provide funding under such agreements. We do not have any outstanding amounts funded, and the amount of our unfunded contractual commitment was $1.7 billion and $2.9 billion as of March 31, 2017 , and December 31, 2016 , respectively. We have classified securities purchased under long-term resale agreements (generally one year or more), which totaled $21.2 billion and $21.3 billion at March 31, 2017 , and December 31, 2016 , respectively, in loans. For additional information on the collateral we receive from other entities under resale agreements and securities borrowings, see the “Offsetting of Resale and Repurchase Agreements and Securities Borrowing and Lending Agreements” section in Note 10 (Guarantees, Pledged Assets and Collateral).

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 4: Investment Securities Table 4.1 provides the amortized cost and fair value by major categories of available-for-sale securities, which are carried at fair value, and held-to-maturity debt securities, which are carried at amortized cost. The net unrealized gains (losses) for available-for-sale securities are reported on an after-tax basis as a component of cumulative OCI. Table 4.1: Amortized Cost and Fair Value (in millions) Amortized Cost Gross unrealized gains Gross unrealized losses Fair value March 31, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ 24,681 43 (99 ) 24,625 Securities of U.S. states and political subdivisions 52,747 624 (1,310 ) 52,061 Mortgage-backed securities: Federal agencies 159,098 1,042 (3,174 ) 156,966 Residential 7,146 457 (10 ) 7,593 Commercial 6,595 93 (48 ) 6,640 Total mortgage-backed securities 172,839 1,592 (3,232 ) 171,199 Corporate debt securities 10,097 418 (85 ) 10,430 Collateralized loan and other debt obligations (1) 33,686 341 (18 ) 34,009 Other (2) 5,963 139 (21 ) 6,081 Total debt securities 300,013 3,157 (4,765 ) 298,405 Marketable equity securities: Perpetual preferred securities 467 21 (6 ) 482 Other marketable equity securities 208 436 (1 ) 643 Total marketable equity securities 675 457 (7 ) 1,125 Total available-for-sale securities 300,688 3,614 (4,772 ) 299,530 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies 44,697 518 (61 ) 45,154 Securities of U.S. states and political subdivisions 6,331 28 (120 ) 6,239 Federal agency and other mortgage-backed securities (3) 53,778 91 (870 ) 52,999 Collateralized loan obligations 1,011 5 — 1,016 Other (2) 2,213 9 (1 ) 2,221 Total held-to-maturity securities 108,030 651 (1,052 ) 107,629 Total $ 408,718 4,265 (5,824 ) 407,159 December 31, 2016 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ 25,874 54 (109 ) 25,819 Securities of U.S. states and political subdivisions 52,121 551 (1,571 ) 51,101 Mortgage-backed securities: Federal agencies 163,513 1,175 (3,458 ) 161,230 Residential 7,375 449 (8 ) 7,816 Commercial 8,475 101 (74 ) 8,502 Total mortgage-backed securities 179,363 1,725 (3,540 ) 177,548 Corporate debt securities 11,186 381 (110 ) 11,457 Collateralized loan and other debt obligations (1) 34,764 287 (31 ) 35,020 Other (2) 6,139 104 (35 ) 6,208 Total debt securities 309,447 3,102 (5,396 ) 307,153 Marketable equity securities: Perpetual preferred securities 445 35 (11 ) 469 Other marketable equity securities 261 481 — 742 Total marketable equity securities 706 516 (11 ) 1,211 Total available-for-sale securities 310,153 3,618 (5,407 ) 308,364 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies 44,690 466 (77 ) 45,079 Securities of U.S. states and political subdivisions 6,336 17 (144 ) 6,209 Federal agency and other mortgage-backed securities (3) 45,161 100 (804 ) 44,457 Collateralized loan obligations 1,065 6 (1 ) 1,070 Other (2) 2,331 10 (1 ) 2,340 Total held-to-maturity securities 99,583 599 (1,027 ) 99,155 Total $ 409,736 4,217 (6,434 ) 407,519 (1) The available-for-sale portfolio includes collateralized debt obligations (CDOs) with a cost basis and fair value of $875 million and $945 million , respectively, at March 31, 2017 , and $819 million and $847 million , respectively, at December 31, 2016 . (2) The “Other” category of available-for-sale securities largely includes asset-backed securities collateralized by student loans. Included in the “Other” category of held-to-maturity securities are asset-backed securities collateralized by automobile leases or loans and cash with a cost basis and fair value of $1.2 billion each at March 31, 2017 , and $1.3 billion each at December 31, 2016 . Also included in the “Other” category of held-to-maturity securities are asset-backed securities collateralized by dealer floorplan loans with a cost basis and fair value of $1.1 billion each at both March 31, 2017 and December 31, 2016 . (3) Predominantly consists of federal agency mortgage-backed securities at both March 31, 2017 and December 31, 2016 . Gross Unrealized Losses and Fair Value Table 4.2 shows the gross unrealized losses and fair value of securities in the investment securities portfolio by length of time that individual securities in each category have been in a continuous loss position. Debt securities on which we have taken credit-related OTTI write-downs are categorized as being “less than 12 months” or “12 months or more” in a continuous loss position based on the point in time that the fair value declined to below the cost basis and not the period of time since the credit-related OTTI write-down. Table 4.2: Gross Unrealized Losses and Fair Value Less than 12 months 12 months or more Total (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (99 ) 11,090 — — (99 ) 11,090 Securities of U.S. states and political subdivisions (210 ) 14,826 (1,100 ) 16,070 (1,310 ) 30,896 Mortgage-backed securities: Federal agencies (3,066 ) 112,495 (108 ) 3,358 (3,174 ) 115,853 Residential (5 ) 389 (5 ) 240 (10 ) 629 Commercial (30 ) 974 (18 ) 1,084 (48 ) 2,058 Total mortgage-backed securities (3,101 ) 113,858 (131 ) 4,682 (3,232 ) 118,540 Corporate debt securities (7 ) 883 (78 ) 878 (85 ) 1,761 Collateralized loan and other debt obligations (2 ) 1,366 (16 ) 1,399 (18 ) 2,765 Other (6 ) 727 (15 ) 988 (21 ) 1,715 Total debt securities (3,425 ) 142,750 (1,340 ) 24,017 (4,765 ) 166,767 Marketable equity securities: Perpetual preferred securities (1 ) 61 (5 ) 48 (6 ) 109 Other marketable equity securities (1 ) 5 — — (1 ) 5 Total marketable equity securities (2 ) 66 (5 ) 48 (7 ) 114 Total available-for-sale securities (3,427 ) 142,816 (1,345 ) 24,065 (4,772 ) 166,881 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (61 ) 4,772 — — (61 ) 4,772 Securities of U.S. states and political subdivisions (120 ) 4,497 — — (120 ) 4,497 Federal agency and other mortgage-backed securities (870 ) 48,779 — — (870 ) 48,779 Collateralized loan obligations — — — — — — Other — — (1 ) 178 (1 ) 178 Total held-to-maturity securities (1,051 ) 58,048 (1 ) 178 (1,052 ) 58,226 Total $ (4,478 ) 200,864 (1,346 ) 24,243 (5,824 ) 225,107 December 31, 2016 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (109 ) 10,816 — — (109 ) 10,816 Securities of U.S. states and political subdivisions (341 ) 17,412 (1,230 ) 16,213 (1,571 ) 33,625 Mortgage-backed securities: Federal agencies (3,338 ) 120,735 (120 ) 3,481 (3,458 ) 124,216 Residential (4 ) 527 (4 ) 245 (8 ) 772 Commercial (43 ) 1,459 (31 ) 1,690 (74 ) 3,149 Total mortgage-backed securities (3,385 ) 122,721 (155 ) 5,416 (3,540 ) 128,137 Corporate debt securities (11 ) 946 (99 ) 1,229 (110 ) 2,175 Collateralized loan and other debt obligations (2 ) 1,899 (29 ) 3,197 (31 ) 5,096 Other (9 ) 971 (26 ) 1,262 (35 ) 2,233 Total debt securities (3,857 ) 154,765 (1,539 ) 27,317 (5,396 ) 182,082 Marketable equity securities: Perpetual preferred securities (3 ) 41 (8 ) 45 (11 ) 86 Other marketable equity securities — — — — — — Total marketable equity securities (3 ) 41 (8 ) 45 (11 ) 86 Total available-for-sale securities (3,860 ) 154,806 (1,547 ) 27,362 (5,407 ) 182,168 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (77 ) 6,351 — — (77 ) 6,351 Securities of U.S. states and political subdivisions (144 ) 4,871 — — (144 ) 4,871 Federal agency and other mortgage-backed securities (804 ) 40,095 — — (804 ) 40,095 Collateralized loan obligations — — (1 ) 266 (1 ) 266 Other — — (1 ) 633 (1 ) 633 Total held-to-maturity securities (1,025 ) 51,317 (2 ) 899 (1,027 ) 52,216 Total $ (4,885 ) 206,123 (1,549 ) 28,261 (6,434 ) 234,384 We have assessed each security with gross unrealized losses included in the previous table for credit impairment. As part of that assessment we evaluated and concluded that we do not intend to sell any of the securities and that it is more likely than not that we will not be required to sell prior to recovery of the amortized cost basis. For debt securities, we evaluate, where necessary, whether credit impairment exists by comparing the present value of the expected cash flows to the securities’ amortized cost basis. For equity securities, we consider numerous factors in determining whether impairment exists, including our intent and ability to hold the securities for a period of time sufficient to recover the cost basis of the securities. For descriptions of the factors we consider when analyzing securities for impairment, see Note 1 (Summary of Significant Accounting Policies) and Note 5 (Investment Securities) to Financial Statements in our 2016 Form 10-K. There were no material changes to our methodologies for assessing impairment in first quarter 2017. Table 4.3 shows the gross unrealized losses and fair value of debt and perpetual preferred investment securities by those rated investment grade and those rated less than investment grade, according to their lowest credit rating by Standard & Poor’s Rating Services (S&P) or Moody’s Investors Service (Moody’s). Credit ratings express opinions about the credit quality of a security. Securities rated investment grade, that is those rated BBB- or higher by S&P or Baa3 or higher by Moody’s, are generally considered by the rating agencies and market participants to be low credit risk. Conversely, securities rated below investment grade, labeled as “speculative grade” by the rating agencies, are considered to be distinctively higher credit risk than investment grade securities. We have also included securities not rated by S&P or Moody’s in the table below based on our internal credit grade of the securities (used for credit risk management purposes) equivalent to the credit rating assigned by major credit agencies. The unrealized losses and fair value of unrated securities categorized as investment grade based on internal credit grades were $38 million and $5.9 billion , respectively, at March 31, 2017 , and $54 million and $7.0 billion , respectively, at December 31, 2016 . If an internal credit grade was not assigned, we categorized the security as non-investment grade. Table 4.3: Gross Unrealized Losses and Fair Value by Investment Grade Investment grade Non-investment grade (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (99 ) 11,090 — — Securities of U.S. states and political subdivisions (1,262 ) 30,538 (48 ) 358 Mortgage-backed securities: Federal agencies (3,174 ) 115,853 — — Residential (1 ) 105 (9 ) 524 Commercial (8 ) 1,562 (40 ) 496 Total mortgage-backed securities (3,183 ) 117,520 (49 ) 1,020 Corporate debt securities (23 ) 972 (62 ) 789 Collateralized loan and other debt obligations (18 ) 2,765 — — Other (16 ) 1,307 (5 ) 408 Total debt securities (4,601 ) 164,192 (164 ) 2,575 Perpetual preferred securities (5 ) 90 (1 ) 19 Total available-for-sale securities (4,606 ) 164,282 (165 ) 2,594 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (61 ) 4,772 — — Securities of U.S. states and political subdivisions (120 ) 4,497 — — Federal agency and other mortgage-backed securities (869 ) 48,711 (1 ) 68 Collateralized loan obligations — — — — Other (1 ) 178 — — Total held-to-maturity securities (1,051 ) 58,158 (1 ) 68 Total $ (5,657 ) 222,440 (166 ) 2,662 December 31, 2016 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (109 ) 10,816 — — Securities of U.S. states and political subdivisions (1,517 ) 33,271 (54 ) 354 Mortgage-backed securities: Federal agencies (3,458 ) 124,216 — — Residential (1 ) 176 (7 ) 596 Commercial (15 ) 2,585 (59 ) 564 Total mortgage-backed securities (3,474 ) 126,977 (66 ) 1,160 Corporate debt securities (31 ) 1,238 (79 ) 937 Collateralized loan and other debt obligations (31 ) 5,096 — — Other (30 ) 1,842 (5 ) 391 Total debt securities (5,192 ) 179,240 (204 ) 2,842 Perpetual preferred securities (10 ) 68 (1 ) 18 Total available-for-sale securities (5,202 ) 179,308 (205 ) 2,860 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (77 ) 6,351 — — Securities of U.S. states and political subdivisions (144 ) 4,871 — — Federal agency and other mortgage-backed securities (803 ) 40,078 (1 ) 17 Collateralized loan obligations (1 ) 266 — — Other (1 ) 633 — — Total held-to-maturity securities (1,026 ) 52,199 (1 ) 17 Total $ (6,228 ) 231,507 (206 ) 2,877 Contractual Maturities Table 4.4 shows the remaining contractual maturities and contractual weighted-average yields (taxable-equivalent basis) of available-for-sale debt securities. The remaining contractual principal maturities for MBS do not consider prepayments. Remaining expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations before the underlying mortgages mature. Table 4.4: Contractual Maturities Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2017 Available-for-sale debt securities (1): Fair value: Securities of U.S. Treasury and federal agencies $ 24,625 1.45 % $ 1,322 0.92 % $ 22,288 1.46 % $ 1,015 1.80 % $ — — % Securities of U.S. states and political subdivisions 52,061 5.68 2,590 1.80 9,990 2.86 2,597 4.65 36,884 6.78 Mortgage-backed securities: Federal agencies 156,966 3.11 1 5.16 107 3.07 5,564 3.08 151,294 3.11 Residential 7,593 3.84 — — 26 5.50 23 3.85 7,544 3.84 Commercial 6,640 4.40 — — — — 31 3.13 6,609 4.40 Total mortgage-backed securities 171,199 3.20 1 5.16 133 3.54 5,618 3.08 165,447 3.20 Corporate debt securities 10,430 4.92 1,467 3.70 3,124 5.79 4,696 4.63 1,143 5.35 Collateralized loan and other debt obligations 34,009 2.81 — — 153 1.84 17,841 2.77 16,015 2.86 Other 6,081 2.37 40 3.21 871 2.41 1,170 2.24 4,000 2.39 Total available-for-sale debt securities at fair value $ 298,405 3.48 % $ 5,420 2.11 % $ 36,559 2.25 % $ 32,937 3.19 % $ 223,489 3.76 % December 31, 2016 Available-for-sale debt securities (1): ` Fair value: Securities of U.S. Treasury and federal agencies $ 25,819 1.44 % $ 1,328 0.92 % $ 23,477 1.45 % $ 1,014 1.80 % $ — — % Securities of U.S. states and political subdivisions 51,101 5.65 2,990 1.69 9,299 2.74 2,391 4.71 36,421 6.78 Mortgage-backed securities: Federal agencies 161,230 3.09 — — 128 2.98 5,363 3.16 155,739 3.09 Residential 7,816 3.84 — — 25 5.21 35 4.34 7,756 3.83 Commercial 8,502 4.58 — — — — 30 3.13 8,472 4.59 Total mortgage-backed securities 177,548 3.19 — — 153 3.34 5,428 3.16 171,967 3.19 Corporate debt securities 11,457 4.81 2,043 2.90 3,374 5.89 4,741 4.71 1,299 5.38 Collateralized loan and other debt obligations 35,020 2.70 — — 168 1.34 16,482 2.66 18,370 2.74 Other 6,208 2.18 57 3.06 971 2.35 1,146 2.04 4,034 2.17 Total available-for-sale debt securities at fair value $ 307,153 3.44 % $ 6,418 1.93 % $ 37,442 2.20 % $ 31,202 3.17 % $ 232,091 3.72 % (1) Weighted-average yields displayed by maturity bucket are weighted based on fair value and predominantly represent contractual coupon rates without effect for any related hedging derivatives. Table 4.5 shows the amortized cost and weighted-average yields of held-to-maturity debt securities by contractual maturity. Table 4.5: Amortized Cost by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2017 Held-to-maturity securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,697 2.12 % $ — — % $ 32,311 2.04 % $ 12,386 2.32 % $ — — % Securities of U.S. states and political subdivisions 6,331 6.04 — — 24 8.20 470 6.72 5,837 5.98 Federal agency and other mortgage-backed securities 53,778 3.19 — — — — — — 53,778 3.19 Collateralized loan obligations 1,011 2.66 — — — — 1,011 2.66 — — Other 2,213 2.00 — — 1,565 1.95 648 2.13 — — Total held-to-maturity debt securities at amortized cost $ 108,030 2.88 % $ — — % $ 33,900 2.04 % $ 14,515 2.48 % $ 59,615 3.46 % December 31, 2016 Held-to-maturity securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,690 2.12 % $ — — % $ 31,956 2.05 % $ 12,734 2.30 % $ — — % Securities of U.S. states and political subdivisions 6,336 6.04 — — 24 8.20 436 6.76 5,876 5.98 Federal agency and other mortgage-backed securities 45,161 3.23 — — — — — — 45,161 3.23 Collateralized loan obligations 1,065 2.58 — — — — 1,065 2.58 — — Other 2,331 1.83 — — 1,683 1.81 648 1.89 — — Total held-to-maturity debt securities at amortized cost $ 99,583 2.87 % $ — — % $ 33,663 2.04 % $ 14,883 2.43 % $ 51,037 3.55 % (1) Weighted-average yields displayed by maturity bucket are weighted based on amortized cost and predominantly represent contractual coupon rates. Table 4.6 shows the fair value of held-to-maturity debt securities by contractual maturity. Table 4.6: Fair Value by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Amount Amount Amount Amount March 31, 2017 Held-to-maturity securities: Fair value: Securities of U.S. Treasury and federal agencies $ 45,154 — 32,686 12,468 — Securities of U.S. states and political subdivisions 6,239 — 24 469 5,746 Federal agency and other mortgage-backed securities 52,999 — — — 52,999 Collateralized loan obligations 1,016 — — 1,016 — Other 2,221 — 1,568 653 — Total held-to-maturity debt securities at fair value $ 107,629 — 34,278 14,606 58,745 December 31, 2016 Held-to-maturity securities: Fair value: Securities of U.S. Treasury and federal agencies $ 45,079 — 32,313 12,766 — Securities of U.S. states and political subdivisions 6,209 — 24 430 5,755 Federal agency and other mortgage-backed securities 44,457 — — — 44,457 Collateralized loan obligations 1,070 — — 1,070 — Other 2,340 — 1,688 652 — Total held-to-maturity debt securities at fair value $ 99,155 — 34,025 14,918 50,212 Realized Gains and Losses Table 4.7 shows the gross realized gains and losses on sales and OTTI write-downs related to the available-for-sale securities portfolio, which includes marketable equity securities, as well as net realized gains and losses on nonmarketable equity investments (see Note 6 (Other Assets)). Table 4.7: Realized Gains and Losses Quarter ended March 31, (in millions) 2017 2016 Gross realized gains $ 241 385 Gross realized losses (36 ) (13 ) OTTI write-downs (53 ) (69 ) Net realized gains from available-for-sale securities 152 303 Net realized gains from nonmarketable equity investments 287 185 Net realized gains from debt securities and equity investments $ 439 488 Other-Than-Temporary Impairment Table 4.8 shows the detail of total OTTI write-downs included in earnings for available-for-sale debt securities, marketable equity securities and nonmarketable equity investments. There were no OTTI write-downs on held-to-maturity securities during first quarter 2017 and 2016 . Table 4.8: OTTI Write-downs Quarter ended March 31, (in millions) 2017 2016 OTTI write-downs included in earnings Debt securities: Securities of U.S. states and political subdivisions $ 8 4 Mortgage-backed securities: Residential 3 12 Commercial 25 1 Corporate debt securities 16 45 Other debt securities — 3 Total debt securities 52 65 Equity securities: Marketable equity securities: Other marketable equity securities 1 4 Total marketable equity securities 1 4 Total investment securities (1) 53 69 Nonmarketable equity investments (1) 76 129 Total OTTI write-downs included in earnings (1) $ 129 198 (1) The quarters ended March 31, 2017 and March 31, 2016 , include $39 million and $124 million , respectively, in OTTI write-downs of oil and gas investments, of which $15 million and $46 million , respectively, related to investment securities and $24 million and $78 million , respectively, related to nonmarketable equity investments. Other-Than-Temporarily Impaired Debt Securities Table 4.9 shows the detail of OTTI write-downs on available-for-sale debt securities included in earnings and the related changes in OCI for the same securities. Table 4.9: OTTI Write-downs Included in Earnings Quarter ended March 31, (in millions) 2017 2016 OTTI on debt securities Recorded as part of gross realized losses: Credit-related OTTI $ 52 61 Intent-to-sell OTTI — 4 Total recorded as part of gross realized losses 52 65 Changes to OCI for losses (reversal of losses) in non-credit-related OTTI (1): Securities of U.S. states and political subdivisions (5 ) — Residential mortgage-backed securities 3 10 Commercial mortgage-backed securities (7 ) 3 Corporate debt securities — (4 ) Other debt securities — 2 Total changes to OCI for non-credit-related OTTI (9 ) 11 Total OTTI losses recorded on debt securities $ 43 76 (1) Represents amounts recorded to OCI for impairment, due to factors other than credit, on debt securities that have also had credit-related OTTI write-downs during the period. Increases represent initial or subsequent non-credit-related OTTI on debt securities. Decreases represent partial to full reversal of impairment due to recoveries in the fair value of securities due to non-credit factors. Table 4.10 presents a rollforward of the OTTI credit loss that has been recognized in earnings as a write-down of available-for-sale debt securities we still own (referred to as "credit-impaired" debt securities) and do not intend to sell. Recognized credit loss represents the difference between the present value of expected future cash flows discounted using the security’s current effective interest rate and the amortized cost basis of the security prior to considering credit loss. Table 4.10: Rollforward of OTTI Credit Loss Quarter ended March 31, (in millions) 2017 2016 Credit loss recognized, beginning of period $ 1,043 1,092 Additions: For securities with initial credit impairments 6 38 For securities with previous credit impairments 46 23 Total additions 52 61 Reductions: For securities sold, matured, or intended/required to be sold (7 ) (6 ) For recoveries of previous credit impairments (1) (2 ) (2 ) Total reductions (9 ) (8 ) Credit loss recognized, end of period $ 1,086 1,145 (1) Recoveries of previous credit impairments result from increases in expected cash flows subsequent to credit loss recognition. Such recoveries are reflected prospectively as interest yield adjustments using the effective interest method.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans and Allowance for Credit Losses	Note 5: Loans and Allowance for Credit Losses Table 5.1 presents total loans outstanding by portfolio segment and class of financing receivable. Outstanding balances include a total net reduction of $4.3 billion and $4.4 billion at March 31, 2017 , and December 31, 2016 , respectively, for unearned income, net deferred loan fees, and unamortized discounts and premiums. Table 5.1: Loans Outstanding (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 329,252 330,840 Real estate mortgage 131,532 132,491 Real estate construction 25,064 23,916 Lease financing 19,156 19,289 Total commercial 505,004 506,536 Consumer: Real estate 1-4 family first mortgage 274,633 275,579 Real estate 1-4 family junior lien mortgage 44,333 46,237 Credit card 34,742 36,700 Automobile 60,408 62,286 Other revolving credit and installment 39,285 40,266 Total consumer 453,401 461,068 Total loans $ 958,405 967,604 Our foreign loans are reported by respective class of financing receivable in the table above. Substantially all of our foreign loan portfolio is commercial loans. Loans are classified as foreign primarily based on whether the borrower’s primary address is outside of the United States. Table 5.2 presents total commercial foreign loans outstanding by class of financing receivable. Table 5.2: Commercial Foreign Loans Outstanding (in millions) Mar 31, Dec 31, Commercial foreign loans: Commercial and industrial $ 56,987 55,396 Real estate mortgage 8,206 8,541 Real estate construction 471 375 Lease financing 986 972 Total commercial foreign loans $ 66,650 65,284 Loan Purchases, Sales, and Transfers Table 5.3 summarizes the proceeds paid or received for purchases and sales of loans and transfers from loans held for investment to mortgages/loans held for sale at lower of cost or fair value. This loan activity also includes participating interests, whereby we receive or transfer a portion of a loan. The table excludes PCI loans and loans for which we have elected the fair value option, including loans originated for sale because their loan activity normally does not impact the allowance for credit losses. Table 5.3: Loan Purchases, Sales, and Transfers 2017 2016 (in millions) Commercial Consumer (1) Total Commercial (2) Consumer (1) Total Quarter ended March 31, Purchases $ 1,159 2 1,161 24,646 — 24,646 Sales (287 ) (62 ) (349 ) (223 ) (272 ) (495 ) Transfers to MHFS/LHFS (479 ) — (479 ) (32 ) (3 ) (35 ) (1) Excludes activity in government insured/guaranteed real estate 1-4 family first mortgage loans. As servicer, we are able to buy delinquent insured/guaranteed loans out of the Government National Mortgage Association (GNMA) pools, and manage and/or resell them in accordance with applicable requirements. These loans are predominantly insured by the Federal Housing Administration (FHA) or guaranteed by the Department of Veterans Affairs (VA). Accordingly, these loans have limited impact on the allowance for loan losses. (2) Purchases include loans and capital leases from the 2016 GE Capital business acquisitions. Commitments to Lend A commitment to lend is a legally binding agreement to lend funds to a customer, usually at a stated interest rate, if funded, and for specific purposes and time periods. We generally require a fee to extend such commitments. Certain commitments are subject to loan agreements with covenants regarding the financial performance of the customer or borrowing base formulas on an ongoing basis that must be met before we are required to fund the commitment. We may reduce or cancel consumer commitments, including home equity lines and credit card lines, in accordance with the contracts and applicable law. We may, as a representative for other lenders, advance funds or provide for the issuance of letters of credit under syndicated loan or letter of credit agreements. Any advances are generally repaid in less than a week and would normally require default of both the customer and another lender to expose us to loss. These temporary advance arrangements totaled approximately $76 billion and $77 billion at March 31, 2017 and December 31, 2016 , respectively. We issue commercial letters of credit to assist customers in purchasing goods or services, typically for international trade. At both March 31, 2017 , and December 31, 2016 , we had $1.1 billion of outstanding issued commercial letters of credit. We also originate multipurpose lending commitments under which borrowers have the option to draw on the facility for different purposes in one of several forms, including a standby letter of credit. See Note 10 (Guarantees, Pledged Assets and Collateral) for additional information on standby letters of credit. When we make commitments, we are exposed to credit risk. The maximum credit risk for these commitments will generally be lower than the contractual amount because a significant portion of these commitments is expected to expire without being used by the customer. In addition, we manage the potential risk in commitments to lend by limiting the total amount of commitments, both by individual customer and in total, by monitoring the size and maturity structure of these commitments and by applying the same credit standards for these commitments as for all of our credit activities. For loans and commitments to lend, we generally require collateral or a guarantee. We may require various types of collateral, including commercial and consumer real estate, automobiles, other short-term liquid assets such as accounts receivable or inventory and long-lived assets, such as equipment and other business assets. Collateral requirements for each loan or commitment may vary based on the loan product and our assessment of a customer’s credit risk according to the specific credit underwriting, including credit terms and structure. The contractual amount of our unfunded credit commitments, including unissued standby and commercial letters of credit, is summarized by portfolio segment and class of financing receivable in Table 5.4 . The table excludes the issued standby and commercial letters of credit and temporary advance arrangements described above. Table 5.4: Unfunded Credit Commitments (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 316,794 319,662 Real estate mortgage 7,448 7,833 Real estate construction 17,794 18,840 Lease financing 11 16 Total commercial 342,047 346,351 Consumer: Real estate 1-4 family first mortgage 33,594 33,498 Real estate 1-4 family junior lien mortgage 41,070 41,431 Credit card 104,630 101,895 Other revolving credit and installment 27,814 28,349 Total consumer 207,108 205,173 Total unfunded credit commitments $ 549,155 551,524 Allowance for Credit Losses Table 5.5 presents the allowance for credit losses, which consists of the allowance for loan losses and the allowance for unfunded credit commitments. Table 5.5: Allowance for Credit Losses Quarter ended March 31, (in millions) 2017 2016 Balance, beginning of period $ 12,540 12,512 Provision for credit losses 605 1,086 Interest income on certain impaired loans (1) (48 ) (48 ) Loan charge-offs: Commercial: Commercial and industrial (253 ) (349 ) Real estate mortgage (5 ) (3 ) Real estate construction — — Lease financing (7 ) (4 ) Total commercial (265 ) (356 ) Consumer: Real estate 1-4 family first mortgage (69 ) (137 ) Real estate 1-4 family junior lien mortgage (93 ) (133 ) Credit card (367 ) (314 ) Automobile (255 ) (211 ) Other revolving credit and installment (189 ) (175 ) Total consumer (973 ) (970 ) Total loan charge-offs (1,238 ) (1,326 ) Loan recoveries: Commercial: Commercial and industrial 82 76 Real estate mortgage 30 32 Real estate construction 8 8 Lease financing 2 3 Total commercial 122 119 Consumer: Real estate 1-4 family first mortgage 62 89 Real estate 1-4 family junior lien mortgage 70 59 Credit card 58 52 Automobile 88 84 Other revolving credit and installment 33 37 Total consumer 311 321 Total loan recoveries 433 440 Net loan charge-offs (805 ) (886 ) Other (5 ) 4 Balance, end of period $ 12,287 12,668 Components: Allowance for loan losses $ 11,168 11,621 Allowance for unfunded credit commitments 1,119 1,047 Allowance for credit losses $ 12,287 12,668 Net loan charge-offs (annualized) as a percentage of average total loans 0.34 % 0.38 Allowance for loan losses as a percentage of total loans 1.17 1.23 Allowance for credit losses as a percentage of total loans 1.28 1.34 (1) Certain impaired loans with an allowance calculated by discounting expected cash flows using the loan’s effective interest rate over the remaining life of the loan recognize changes in allowance attributable to the passage of time as interest income. Table 5.6 summarizes the activity in the allowance for credit losses by our commercial and consumer portfolio segments. Table 5.6: Allowance Activity by Portfolio Segment 2017 2016 (in millions) Commercial Consumer Total Commercial Consumer Total Quarter ended March 31, Balance, beginning of period $ 7,394 5,146 12,540 6,872 5,640 12,512 Provision (reversal of provision) for credit losses (89 ) 694 605 714 372 1,086 Interest income on certain impaired loans (15 ) (33 ) (48 ) (5 ) (43 ) (48 ) Loan charge-offs (265 ) (973 ) (1,238 ) (356 ) (970 ) (1,326 ) Loan recoveries 122 311 433 119 321 440 Net loan charge-offs (143 ) (662 ) (805 ) (237 ) (649 ) (886 ) Other (5 ) — (5 ) 4 — 4 Balance, end of period $ 7,142 5,145 12,287 7,348 5,320 12,668 Table 5.7 disaggregates our allowance for credit losses and recorded investment in loans by impairment methodology. Table 5.7: Allowance by Impairment Methodology Allowance for credit losses Recorded investment in loans (in millions) Commercial Consumer Total Commercial Consumer Total March 31, 2017 Collectively evaluated (1) $ 6,281 3,691 9,972 499,565 421,619 921,184 Individually evaluated (2) 859 1,454 2,313 5,076 16,475 21,551 PCI (3) 2 — 2 363 15,307 15,670 Total $ 7,142 5,145 12,287 505,004 453,401 958,405 December 31, 2016 Collectively evaluated (1) $ 6,392 3,553 9,945 500,487 428,009 928,496 Individually evaluated (2) 1,000 1,593 2,593 5,372 17,005 22,377 PCI (3) 2 — 2 677 16,054 16,731 Total $ 7,394 5,146 12,540 506,536 461,068 967,604 (1) Represents loans collectively evaluated for impairment in accordance with Accounting Standards Codification (ASC) 450-20, Loss Contingencies (formerly FAS 5), and pursuant to amendments by ASU 2010-20 regarding allowance for non-impaired loans. (2) Represents loans individually evaluated for impairment in accordance with ASC 310-10, Receivables (formerly FAS 114), and pursuant to amendments by ASU 2010-20 regarding allowance for impaired loans. (3) Represents the allowance and related loan carrying value determined in accordance with ASC 310-30 , Receivables – Loans and Debt Securities Acquired with Deteriorated Credit Quality (formerly SOP 03-3) and pursuant to amendments by ASU 2010-20 regarding allowance for PCI loans. Credit Quality We monitor credit quality by evaluating various attributes and utilize such information in our evaluation of the appropriateness of the allowance for credit losses. The following sections provide the credit quality indicators we most closely monitor. The credit quality indicators are generally based on information as of our financial statement date, with the exception of updated Fair Isaac Corporation (FICO) scores and updated loan-to-value (LTV)/combined LTV (CLTV). We obtain FICO scores at loan origination and the scores are generally updated at least quarterly, except in limited circumstances, including compliance with the Fair Credit Reporting Act (FCRA). Generally, the LTV and CLTV indicators are updated in the second month of each quarter, with updates no older than December 31, 2016 . See the “Purchased Credit-Impaired Loans” section in this Note for credit quality information on our PCI portfolio. COMMERCIAL CREDIT QUALITY INDICATORS In addition to monitoring commercial loan concentration risk, we manage a consistent process for assessing commercial loan credit quality. Generally, commercial loans are subject to individual risk assessment using our internal borrower and collateral quality ratings. Our ratings are aligned to Pass and Criticized categories. The Criticized category includes Special Mention, Substandard, and Doubtful categories which are defined by bank regulatory agencies. Table 5.8 provides a breakdown of outstanding commercial loans by risk category. Of the $20.4 billion in criticized commercial and industrial loans and $5.7 billion in criticized commercial real estate (CRE) loans at March 31, 2017 , $2.9 billion and $712 million , respectively, have been placed on nonaccrual status and written down to net realizable collateral value. Table 5.8: Commercial Loans by Risk Category (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2017 By risk category: Pass $ 308,652 126,215 24,450 17,881 477,198 Criticized 20,423 5,153 592 1,275 27,443 Total commercial loans (excluding PCI) 329,075 131,368 25,042 19,156 504,641 Total commercial PCI loans (carrying value) 177 164 22 — 363 Total commercial loans $ 329,252 131,532 25,064 19,156 505,004 December 31, 2016 By risk category: Pass $ 308,166 126,793 23,408 17,899 476,266 Criticized 22,437 5,315 451 1,390 29,593 Total commercial loans (excluding PCI) 330,603 132,108 23,859 19,289 505,859 Total commercial PCI loans (carrying value) 237 383 57 — 677 Total commercial loans $ 330,840 132,491 23,916 19,289 506,536 Table 5.9 provides past due information for commercial loans, which we monitor as part of our credit risk management practices. Table 5.9: Commercial Loans by Delinquency Status (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2017 By delinquency status: Current-29 days past due (DPD) and still accruing $ 325,001 130,566 24,969 18,946 499,482 30-89 DPD and still accruing 1,088 119 30 114 1,351 90+ DPD and still accruing 88 11 3 — 102 Nonaccrual loans 2,898 672 40 96 3,706 Total commercial loans (excluding PCI) 329,075 131,368 25,042 19,156 504,641 Total commercial PCI loans (carrying value) 177 164 22 — 363 Total commercial loans $ 329,252 131,532 25,064 19,156 505,004 December 31, 2016 By delinquency status: Current-29 DPD and still accruing $ 326,765 131,165 23,776 19,042 500,748 30-89 DPD and still accruing 594 222 40 132 988 90+ DPD and still accruing 28 36 — — 64 Nonaccrual loans 3,216 685 43 115 4,059 Total commercial loans (excluding PCI) 330,603 132,108 23,859 19,289 505,859 Total commercial PCI loans (carrying value) 237 383 57 — 677 Total commercial loans $ 330,840 132,491 23,916 19,289 506,536 CONSUMER CREDIT QUALITY INDICATORS We have various classes of consumer loans that present unique risks. Loan delinquency, FICO credit scores and LTV for loan types are common credit quality indicators that we monitor and utilize in our evaluation of the appropriateness of the allowance for credit losses for the consumer portfolio segment. Many of our loss estimation techniques used for the allowance for credit losses rely on delinquency-based models; therefore, delinquency is an important indicator of credit quality and the establishment of our allowance for credit losses. Table 5.10 provides the outstanding balances of our consumer portfolio by delinquency status. Table 5.10: Consumer Loans by Delinquency Status (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Credit card Automobile Other revolving credit and installment Total March 31, 2017 By delinquency status: Current-29 DPD $ 240,508 43,422 33,868 59,064 38,885 415,747 30-59 DPD 1,612 286 238 1,007 154 3,297 60-89 DPD 635 137 183 243 95 1,293 90-119 DPD 253 80 160 87 89 669 120-179 DPD 289 99 292 6 33 719 180+ DPD 1,534 275 1 1 29 1,840 Government insured/guaranteed loans (1) 14,529 — — — — 14,529 Total consumer loans (excluding PCI) 259,360 44,299 34,742 60,408 39,285 438,094 Total consumer PCI loans (carrying value) 15,273 34 — — — 15,307 Total consumer loans $ 274,633 44,333 34,742 60,408 39,285 453,401 December 31, 2016 By delinquency status: Current-29 DPD $ 239,061 45,238 35,773 60,572 39,833 420,477 30-59 DPD 1,904 296 275 1,262 177 3,914 60-89 DPD 700 160 200 330 111 1,501 90-119 DPD 307 102 169 116 93 787 120-179 DPD 323 108 279 5 30 745 180+ DPD 1,661 297 4 1 22 1,985 Government insured/guaranteed loans (1) 15,605 — — — — 15,605 Total consumer loans (excluding PCI) 259,561 46,201 36,700 62,286 40,266 445,014 Total consumer PCI loans (carrying value) 16,018 36 — — — 16,054 Total consumer loans $ 275,579 46,237 36,700 62,286 40,266 461,068 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. Loans insured/guaranteed by the FHA/VA and 90+ DPD totaled $9.2 billion at March 31, 2017 , compared with $10.1 billion at December 31, 2016 . Of the $3.2 billion of consumer loans not government insured/guaranteed that are 90 days or more past due at March 31, 2017 , $838 million was accruing, compared with $3.5 billion past due and $908 million accruing at December 31, 2016 . Real estate 1-4 family first mortgage loans 180 days or more past due totaled $1.5 billion , or 0.6% of total first mortgages (excluding PCI), at March 31, 2017 , compared with $1.7 billion , or 0.6% , at December 31, 2016 . Table 5.11 provides a breakdown of our consumer portfolio by FICO. The March 31, 2017 FICO scores for real estate 1-4 family first and junior lien mortgages reflect a new FICO score version we adopted in first quarter 2017 to monitor and manage those portfolios. In general the impact for us is a shift to higher scores, particularly to the 800+ level, as the new FICO score version utilizes a more refined approach that better distinguishes borrower credit risk. Most of the scored consumer portfolio has an updated FICO of 680 and above, reflecting a strong current borrower credit profile. FICO is not available for certain loan types, or may not be required if we deem it unnecessary due to strong collateral and other borrower attributes. Substantially all loans not requiring a FICO score are securities-based loans originated through retail brokerage, and totaled $7.9 billion at March 31, 2017 , and $8.0 billion at December 31, 2016 . Table 5.11: Consumer Loans by FICO (in millions) Real estate 1-4 family first mortgage (1) Real estate 1-4 family junior lien mortgage (1) Credit card Automobile Other revolving credit and installment (1) Total March 31, 2017 By FICO: < 600 $ 6,260 2,123 3,352 9,906 947 22,588 600-639 4,256 1,501 2,943 6,393 1,009 16,102 640-679 8,081 2,934 5,371 9,763 2,158 28,307 680-719 16,503 5,663 7,080 10,826 3,899 43,971 720-759 28,250 7,106 7,339 8,525 5,407 56,627 760-799 51,813 7,993 5,823 7,945 6,614 80,188 800+ 124,534 16,237 2,792 6,720 8,682 158,965 No FICO available 5,134 742 42 330 2,643 8,891 FICO not required — — — — 7,926 7,926 Government insured/guaranteed loans (2) 14,529 — — — — 14,529 Total consumer loans (excluding PCI) 259,360 44,299 34,742 60,408 39,285 438,094 Total consumer PCI loans (carrying value) 15,273 34 — — — 15,307 Total consumer loans $ 274,633 44,333 34,742 60,408 39,285 453,401 December 31, 2016 By FICO: < 600 $ 6,720 2,591 3,475 9,934 976 23,696 600-639 5,400 1,917 3,109 6,705 1,056 18,187 640-679 10,975 3,747 5,678 10,204 2,333 32,937 680-719 23,300 6,432 7,382 11,233 4,302 52,649 720-759 38,832 9,413 7,632 8,769 5,869 70,515 760-799 103,608 14,929 6,191 8,164 8,348 141,240 800+ 49,508 6,391 2,868 6,856 6,434 72,057 No FICO available 5,613 781 365 421 2,906 10,086 FICO not required — — — — 8,042 8,042 Government insured/guaranteed loans (2) 15,605 — — — — 15,605 Total consumer loans (excluding PCI) 259,561 46,201 36,700 62,286 40,266 445,014 Total consumer PCI loans (carrying value) 16,018 36 — — — 16,054 Total consumer loans $ 275,579 46,237 36,700 62,286 40,266 461,068 (1) The March 31, 2017 , amounts reflect updated FICO score version implemented in first quarter 2017. (2) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. LTV refers to the ratio comparing the loan’s unpaid principal balance to the property’s collateral value. CLTV refers to the combination of first mortgage and junior lien mortgage (including unused line amounts for credit line products) ratios. LTVs and CLTVs are updated quarterly using a cascade approach which first uses values provided by automated valuation models (AVMs) for the property. If an AVM is not available, then the value is estimated using the original appraised value adjusted by the change in Home Price Index (HPI) for the property location. If an HPI is not available, the original appraised value is used. The HPI value is normally the only method considered for high value properties, generally with an original value of $1 million or more, as the AVM values have proven less accurate for these properties. Table 5.12 shows the most updated LTV and CLTV distribution of the real estate 1-4 family first and junior lien mortgage loan portfolios. We consider the trends in residential real estate markets as we monitor credit risk and establish our allowance for credit losses. In the event of a default, any loss should be limited to the portion of the loan amount in excess of the net realizable value of the underlying real estate collateral value. Certain loans do not have an LTV or CLTV due to industry data availability and portfolios acquired from or serviced by other institutions. Table 5.12: Consumer Loans by LTV/CLTV March 31, 2017 December 31, 2016 (in millions) Real estate 1-4 family first mortgage by LTV Real estate 1-4 family junior lien mortgage by CLTV Total Real estate 1-4 family first mortgage by LTV Real estate 1-4 family junior lien mortgage by CLTV Total By LTV/CLTV: 0-60% $ 121,653 16,024 137,677 121,430 16,464 137,894 60.01-80% 101,956 14,651 116,607 101,726 15,262 116,988 80.01-100% 16,506 8,312 24,818 15,795 8,765 24,560 100.01-120% (1) 2,459 3,339 5,798 2,644 3,589 6,233 > 120% (1) 1,025 1,482 2,507 1,066 1,613 2,679 No LTV/CLTV available 1,232 491 1,723 1,295 508 1,803 Government insured/guaranteed loans (2) 14,529 — 14,529 15,605 — 15,605 Total consumer loans (excluding PCI) 259,360 44,299 303,659 259,561 46,201 305,762 Total consumer PCI loans (carrying value) 15,273 34 15,307 16,018 36 16,054 Total consumer loans $ 274,633 44,333 318,966 275,579 46,237 321,816 (1) Reflects total loan balances with LTV/CLTV amounts in excess of 100%. In the event of default, the loss content would generally be limited to only the amount in excess of 100% LTV/CLTV. (2) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. NONACCRUAL LOANS Table 5.13 provides loans on nonaccrual status. PCI loans are excluded from this table because they continue to earn interest from accretable yield, independent of performance in accordance with their contractual terms. Table 5.13: Nonaccrual Loans (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 2,898 3,216 Real estate mortgage 672 685 Real estate construction 40 43 Lease financing 96 115 Total commercial 3,706 4,059 Consumer: Real estate 1-4 family first mortgage (1) 4,743 4,962 Real estate 1-4 family junior lien mortgage 1,153 1,206 Automobile 101 106 Other revolving credit and installment 56 51 Total consumer 6,053 6,325 Total nonaccrual loans (excluding PCI) $ 9,759 10,384 (1) Includes MHFS of $145 million and $149 million at March 31, 2017 , and December 31, 2016 , respectively. LOANS IN PROCESS OF FORECLOSURE Our recorded investment in consumer mortgage loans collateralized by residential real estate property that are in process of foreclosure was $7.8 billion and $8.1 billion at March 31, 2017 and December 31, 2016 , respectively, which included $4.7 billion and $4.8 billion , respectively, of loans that are government insured/guaranteed. We commence the foreclosure process on consumer real estate loans when a borrower becomes 120 days delinquent in accordance with Consumer Finance Protection Bureau Guidelines. Foreclosure procedures and timelines vary depending on whether the property address resides in a judicial or non-judicial state. Judicial states require the foreclosure to be processed through the state’s courts while non-judicial states are processed without court intervention. Foreclosure timelines vary according to state law. LOANS 90 DAYS OR MORE PAST DUE AND STILL ACCRUING Certain loans 90 days or more past due as to interest or principal are still accruing, because they are (1) well-secured and in the process of collection or (2) real estate 1-4 family mortgage loans or consumer loans exempt under regulatory rules from being classified as nonaccrual until later delinquency, usually 120 days past due. PCI loans of $1.8 billion at March 31, 2017 , and $2.0 billion at December 31, 2016 , are not included in these past due and still accruing loans even when they are 90 days or more contractually past due. These PCI loans are considered to be accruing because they continue to earn interest from accretable yield, independent of performance in accordance with their contractual terms. Table 5.14 shows non-PCI loans 90 days or more past due and still accruing by class for loans not government insured/guaranteed. Table 5.14: Loans 90 Days or More Past Due and Still Accruing (in millions) Mar 31, 2017 Dec 31, 2016 Total (excluding PCI): $ 10,525 11,858 Less: FHA insured/guaranteed by the VA (1)(2) 9,585 10,883 Less: Student loans guaranteed under the Federal Family Education Loan Program (FFELP) (3) — 3 Total, not government insured/guaranteed $ 940 972 By segment and class, not government insured/guaranteed: Commercial: Commercial and industrial $ 88 28 Real estate mortgage 11 36 Real estate construction 3 — Total commercial 102 64 Consumer: Real estate 1-4 family first mortgage (2) 149 175 Real estate 1-4 family junior lien mortgage (2) 42 56 Credit card 453 452 Automobile 79 112 Other revolving credit and installment 115 113 Total consumer 838 908 Total, not government insured/guaranteed $ 940 972 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. (2) Includes mortgages held for sale 90 days or more past due and still accruing. (3) Represents loans whose repayments are largely guaranteed by agencies on behalf of the U.S. Department of Education under the FFELP. All remaining student loans guaranteed under the FFELP were sold as of March 31, 2017. IMPAIRED LOANS Table 5.15 summarizes key information for impaired loans. Our impaired loans predominantly include loans on nonaccrual status in the commercial portfolio segment and loans modified in a TDR, whether on accrual or nonaccrual status. These impaired loans generally have estimated losses which are included in the allowance for credit losses. We have impaired loans with no allowance for credit losses when loss content has been previously recognized through charge-offs and we do not anticipate additional charge-offs or losses, or certain loans are currently performing in accordance with their terms and for which no loss has been estimated. Impaired loans exclude PCI loans. Table 5.15 includes trial modifications that totaled $261 million at March 31, 2017 , and $299 million at December 31, 2016 . For additional information on our impaired loans and allowance for credit losses, see Note 1 (Summary of Significant Accounting Policies) in our 2016 Form 10-K. Table 5.15: Impaired Loans Summary Recorded investment (in millions) Unpaid principal balance (1) Impaired loans Impaired loans with related allowance for credit losses Related allowance for credit losses March 31, 2017 Commercial: Commercial and industrial $ 4,833 3,508 3,158 571 Real estate mortgage 1,722 1,393 1,393 236 Real estate construction 134 73 73 14 Lease financing 149 102 102 38 Total commercial 6,838 5,076 4,726 859 Consumer: Real estate 1-4 family first mortgage 15,891 13,872 9,075 996 Real estate 1-4 family junior lien mortgage 2,339 2,106 1,628 326 Credit card 308 308 308 107 Automobile 146 80 29 7 Other revolving credit and installment 117 109 99 18 Total consumer (2) 18,801 16,475 11,139 1,454 Total impaired loans (excluding PCI) $ 25,639 21,551 15,865 2,313 December 31, 2016 Commercial: Commercial and industrial $ 5,058 3,742 3,418 675 Real estate mortgage 1,777 1,418 1,396 280 Real estate construction 167 93 93 22 Lease financing 146 119 119 23 Total commercial 7,148 5,372 5,026 1,000 Consumer: Real estate 1-4 family first mortgage 16,438 14,362 9,475 1,117 Real estate 1-4 family junior lien mortgage 2,399 2,156 1,681 350 Credit card 300 300 300 104 Automobile 153 85 31 5 Other revolving credit and installment 109 102 91 17 Total consumer (2) 19,399 17,005 11,578 1,593 Total impaired loans (excluding PCI) $ 26,547 22,377 16,604 2,593 (1) Excludes the unpaid principal balance for loans that have been fully charged off or otherwise have zero recorded investment. (2) Includes the recorded investment of $1.5 billion at both March 31, 2017 and December 31, 2016 , of government insured/guaranteed loans that are predominantly insured by the FHA or guaranteed by the VA and generally do not have an allowance. Impaired loans may also have limited, if any, allowance when the recorded investment of the loan approximates estimated net realizable value as a result of charge-offs prior to a TDR modification. Commitments to lend additional funds on loans whose terms have been modified in a TDR amounted to $630 million and $403 million at March 31, 2017 and December 31, 2016 , respectively. Table 5.16 provides the average recorded investment in impaired loans and the amount of interest income recognized on impaired loans by portfolio segment and class. Table 5.16: Average Recorded Investment in Impaired Loans Quarter ended March 31, 2017 2016 (in millions) Average recorded investment Recognized interest income Average recorded investment Recognized interest income Commercial: Commercial and industrial $ 3,675 33 2,766 19 Real estate mortgage 1,394 27 1,772 32 Real estate construction 84 1 130 2 Lease financing 119 — 75 — Total commercial 5,272 61 4,743 53 Consumer: Real estate 1-4 family first mortgage 14,132 190 16,911 221 Real estate 1-4 family junior lien mortgage 2,131 31 2,382 34 Credit card 302 8 297 9 Automobile 83 3 101 3 Other revolving credit and installment 106 2 82 1 Total consumer 16,754 234 19,773 268 Total impaired loans (excluding PCI) $ 22,026 295 24,516 321 Interest income: Cash basis of accounting $ 78 95 Other (1) 217 226 Total interest income $ 295 321 (1) Includes interest recognized on accruing TDRs, interest recognized related to certain impaired loans which have an allowance calculated using discounting, and amortization of purchase accounting adjustments related to certain impaired loans. TROUBLED DEBT RESTRUCTURINGS (TDRs) When, for economic or legal reasons related to a borrower’s financial difficulties, we grant a concession for other than an insignificant period of time to a borrower that we would not otherwise consider, the related loan is classified as a TDR, the balance of which totaled $20.1 billion and $20.8 billion at March 31, 2017 and December 31, 2016 , respectively. We do not consider loan resolutions such as foreclosure or short sale to be a TDR. We may require some consumer borrowers experiencing financial difficulty to make trial payments generally for a period of three to four months, according to the terms of a planned permanent modification, to determine if they can perform according to those terms. These arrangements represent trial modifications, which we classify and account for as TDRs. While loans are in trial payment programs, their original terms are not considered modified and they continue to advance through delinquency status and accrue interest according to their original terms. Table 5.17 summarizes our TDR modifications for the periods presented by primary modification type and includes the financial effects of these modifications. For those loans that modify more than once, the table reflects each modification that occurred during the period. Loans that both modify and pay off within the period, as well as changes in recorded investment during the period for loans modified in prior periods, are not included in the table. Table 5.17: TDR Modifications Primary modification type (1) Financial effects of modifications (in millions) Principal (2) Interest rate reduction Other concessions (3) Total Charge- offs (4) Weighted average interest rate reduction Recorded investment related to interest rate reduction (5) Quar

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2017
Other Assets [Abstract]
Other Assets	Note 6: Other Assets Table 6.1 presents the components of other assets. Table 6.1: Other Assets (in millions) Mar 31, Dec 31, Nonmarketable equity investments: Cost method: Federal bank stock $ 6,185 6,407 Private equity 1,484 1,465 Auction rate securities 453 525 Total cost method 8,122 8,397 Equity method: LIHTC (1) 9,624 9,714 Private equity 3,620 3,635 Tax-advantaged renewable energy 2,013 2,054 New market tax credit and other 277 305 Total equity method 15,534 15,708 Fair value (2) 3,780 3,275 Total nonmarketable equity investments 27,436 27,380 Corporate/bank-owned life insurance 19,368 19,325 Accounts receivable (3) 31,570 31,056 Interest receivable 5,486 5,339 Core deposit intangibles 1,407 1,620 Customer relationship and other amortized intangibles 1,028 1,089 Foreclosed assets: Residential real estate: Government insured/guaranteed (3) 179 197 Non-government insured/guaranteed 345 378 Non-residential real estate 381 403 Operating lease assets 9,837 10,089 Due from customers on acceptances 191 196 Other 10,533 17,469 Total other assets $ 107,761 114,541 (1) Represents low income housing tax credit investments. (2) Represents nonmarketable equity investments for which we have elected the fair value option. See Note 13 (Fair Values of Assets and Liabilities) for additional information. (3) Certain government-guaranteed residential real estate mortgage loans upon foreclosure are included in Accounts receivable. Both principal and interest related to these foreclosed real estate assets are collectible because the loans were predominantly insured by the FHA or guaranteed by the VA. For more information on the classification of certain government-guaranteed mortgage loans upon foreclosure, see Note 1 (Summary of Significant Accounting Policies) to Financial Statements in our 2016 10-K. Table 6.2 presents income (expense) related to nonmarketable equity investments. Table 6.2: Nonmarketable Equity Investments Quarter ended March 31, (in millions) 2017 2016 Net realized gains from nonmarketable equity investments $ 287 185 All other (45 ) (186 ) Total $ 242 (1 ) Low Income Housing Tax Credit Investments We invest in affordable housing projects that qualify for the low income housing tax credit (LIHTC), which is designed to promote private development of low income housing. These investments generate a return mostly through realization of federal tax credits. Total LIHTC investments were $9.6 billion and $9.7 billion at March 31, 2017 and December 31, 2016 , respectively. In first quarter 2017 , we recognized pre-tax losses of $230 million related to our LIHTC investments, compared with $202 million in first quarter 2016. We also recognized total tax benefits of $347 million in first quarter 2017 , which included tax credits recorded in income taxes of $261 million . In first quarter 2016 , total tax benefits were $307 million , which included tax credits of $230 million . We are periodically required to provide additional financial support during the investment period. Our liability for these unfunded commitments was $3.4 billion at March 31, 2017 and $3.6 billion at December 31, 2016 . Predominantly all of this liability is expected to be paid over the next three years. This liability is included in long-term debt.

Securitizations and Variable In

Securitizations and Variable Interest Entities	3 Months Ended
	Mar. 31, 2017
Securitizations and Variable Interest Entities [Abstract]
Securitizations and Variable Interest Entities	Note 7: Securitizations and Variable Interest Entities Involvement with SPEs In the normal course of business, we enter into various types of on- and off-balance sheet transactions with SPEs, which are corporations, trusts, limited liability companies or partnerships that are established for a limited purpose. Generally, SPEs are formed in connection with securitization transactions and are considered variable interest entities (VIEs). For further description of our involvement with SPEs, see Note 8 (Securitizations and Variable Interest Entities) to Financial Statements in our 2016 Form 10-K. We have segregated our involvement with VIEs between those VIEs which we consolidate, those which we do not consolidate and those for which we account for the transfers of financial assets as secured borrowings. Secured borrowings are transactions involving transfers of our financial assets to third parties that are accounted for as financings with the assets pledged as collateral. Accordingly, the transferred assets remain recognized on our balance sheet. Subsequent tables within this Note further segregate these transactions by structure type. Table 7.1 provides the classifications of assets and liabilities in our balance sheet for our transactions with VIEs. Table 7.1: Balance Sheet Transactions with VIEs (in millions) VIEs that we do not consolidate VIEs that we consolidate Transfers that we account for as secured borrowings Total March 31, 2017 Cash $ — 128 — 128 Federal funds sold, securities purchased under resale agreements and other short-term investments — 485 — 485 Trading assets 1,546 126 201 1,873 Investment securities (1) 7,221 — 650 7,871 Loans 6,527 13,056 127 19,710 Mortgage servicing rights 13,704 — — 13,704 Derivative assets 68 1 — 69 Other assets 10,148 361 10 10,519 Total assets 39,214 14,157 988 54,359 Short-term borrowings — — 783 783 Derivative liabilities 57 30 (2) — 87 Accrued expenses and other liabilities 287 103 (2) 2 392 Long-term debt 3,351 3,640 (2) 129 7,120 Total liabilities 3,695 3,773 914 8,382 Noncontrolling interests — 132 — 132 Net assets $ 35,519 10,252 74 45,845 December 31, 2016 Cash $ — 168 — 168 Federal funds sold, securities purchased under resale agreements and other short-term investments — 74 — 74 Trading assets 2,034 130 201 2,365 Investment securities (1) 8,530 — 786 9,316 Loans 6,698 12,589 138 19,425 Mortgage servicing rights 13,386 — — 13,386 Derivative assets 91 1 — 92 Other assets 10,281 452 11 10,744 Total assets 41,020 13,414 1,136 55,570 Short-term borrowings — — 905 905 Derivative liabilities 59 33 (2) — 92 Accrued expenses and other liabilities 306 107 (2) 2 415 Long-term debt 3,598 3,694 (2) 136 7,428 Total liabilities 3,963 3,834 1,043 8,840 Noncontrolling interests — 138 — 138 Net assets $ 37,057 9,442 93 46,592 (1) Excludes certain debt securities related to loans serviced for the Federal National Mortgage Association (FNMA), Federal Home Loan Mortgage Corporation (FHLMC) and GNMA. (2) There were no VIE liabilities with recourse to the general credit of Wells Fargo for the periods presented. Transactions with Unconsolidated VIEs Our transactions with unconsolidated VIEs include securitizations of residential mortgage loans, CRE loans, student loans, automobile loans and leases, certain dealer floorplan loans; investment and financing activities involving collateralized debt obligations (CDOs) backed by asset-backed and CRE securities, tax credit structures, collateralized loan obligations (CLOs) backed by corporate loans, and other types of structured financing. We have various forms of involvement with VIEs, including servicing, holding senior or subordinated interests, entering into liquidity arrangements, credit default swaps and other derivative contracts. Involvements with these unconsolidated VIEs are recorded on our balance sheet in trading assets, investment securities, loans, MSRs, derivative assets and liabilities, other assets, other liabilities, and long-term debt, as appropriate. Table 7.2 provides a summary of unconsolidated VIEs with which we have significant continuing involvement, but we are not the primary beneficiary. We do not consider our continuing involvement in an unconsolidated VIE to be significant when it relates to third-party sponsored VIEs for which we were not the transferor (unless we are servicer and have other significant forms of involvement) or if we were the sponsor only or sponsor and servicer but do not have any other forms of significant involvement. Significant continuing involvement includes transactions where we were the sponsor or transferor and have other significant forms of involvement. Sponsorship includes transactions with unconsolidated VIEs where we solely or materially participated in the initial design or structuring of the entity or marketing of the transaction to investors. When we transfer assets to a VIE and account for the transfer as a sale, we are considered the transferor. We consider investments in securities (other than those held temporarily in trading), loans, guarantees, liquidity agreements, written options and servicing of collateral to be other forms of involvement that may be significant. We have excluded certain transactions with unconsolidated VIEs from the balances presented in the following table where we have determined that our continuing involvement is not significant due to the temporary nature and size of our variable interests, because we were not the transferor or because we were not involved in the design of the unconsolidated VIEs. We also exclude from the table secured borrowing transactions with unconsolidated VIEs (for information on these transactions, see the Transactions with Consolidated VIEs and Secured Borrowings section in this Note). Table 7.2: Unconsolidated VIEs Carrying value – asset (liability) (in millions) Total VIE assets Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Net assets March 31, 2017 Residential mortgage loan securitizations: Conforming (2) $ 1,176,819 2,539 12,750 — (226 ) 15,063 Other/nonconforming 17,459 824 101 — (2 ) 923 Commercial mortgage securitizations 152,603 3,115 853 62 (34 ) 3,996 Collateralized debt obligations: Debt securities 1,336 — — — (25 ) (25 ) Loans (3) 1,527 1,489 — — — 1,489 Asset-based finance structures 8,039 6,142 — — — 6,142 Tax credit structures 29,808 10,642 — — (3,351 ) 7,291 Collateralized loan obligations 49 10 — — — 10 Investment funds 220 52 — — — 52 Other (4) 1,720 629 — (51 ) — 578 Total $ 1,389,580 25,442 13,704 11 (3,638 ) 35,519 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,539 12,750 — 929 16,218 Other/nonconforming 824 101 — 2 927 Commercial mortgage securitizations 3,115 853 72 9,783 13,823 Collateralized debt obligations: Debt securities — — — 25 25 Loans (3) 1,489 — — — 1,489 Asset-based finance structures 6,142 — — 71 6,213 Tax credit structures 10,642 — — 941 11,583 Collateralized loan obligations 10 — — — 10 Investment funds 52 — — — 52 Other (4) 629 — 89 — 718 Total $ 25,442 13,704 161 11,751 51,058 (continued on following page) (continued from previous page) Carrying value – asset (liability) (in millions) Total VIE assets Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Net assets December 31, 2016 Residential mortgage loan securitizations: Conforming (2) $ 1,166,296 3,026 12,434 — (232 ) 15,228 Other/nonconforming 18,805 873 109 — (2 ) 980 Commercial mortgage securitizations 166,596 4,258 843 87 (35 ) 5,153 Collateralized debt obligations: Debt securities 1,472 — — — (25 ) (25 ) Loans (3) 1,545 1,507 — — — 1,507 Asset-based finance structures 9,152 6,522 — — — 6,522 Tax credit structures 29,713 10,669 — — (3,609 ) 7,060 Collateralized loan obligations 78 10 — — — 10 Investment funds 214 48 — — — 48 Other (4) 1,733 630 — (56 ) — 574 Total $ 1,395,604 27,543 13,386 31 (3,903 ) 37,057 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 3,026 12,434 — 979 16,439 Other/nonconforming 873 109 — 2 984 Commercial mortgage securitizations 4,258 843 94 9,566 14,761 Collateralized debt obligations: Debt securities — — — 25 25 Loans (3) 1,507 — — — 1,507 Asset-based finance structures 6,522 — — 72 6,594 Tax credit structures 10,669 — — 1,104 11,773 Collateralized loan obligations 10 — — — 10 Investment funds 48 — — — 48 Other (4) 630 — 93 — 723 Total $ 27,543 13,386 187 11,748 52,864 (1) Includes total equity interests of $10.1 billion and $10.3 billion at March 31, 2017 , and December 31, 2016 , respectively. Also includes debt interests in the form of both loans and securities. Excludes certain debt securities held related to loans serviced for FNMA, FHLMC and GNMA. (2) Excludes assets and related liabilities with a recorded carrying value on our balance sheet of $888 million and $1.2 billion at March 31, 2017 , and December 31, 2016 , respectively, for certain delinquent loans that are eligible for repurchase from GNMA loan securitizations. The recorded carrying value represents the amount that would be payable if the Company was to exercise the repurchase option. The carrying amounts are excluded from the table because the loans eligible for repurchase do not represent interests in the VIEs. (3) Represents senior loans to trusts that are collateralized by asset-backed securities. The trusts invest in senior tranches from a diversified pool of U.S. asset securitizations, of which all are current and 100% were rated as investment grade by the primary rating agencies at both March 31, 2017 , and December 31, 2016 . These senior loans are accounted for at amortized cost and are subject to the Company’s allowance and credit charge-off policies. (4) Includes structured financing and credit-linked note structures. Also contains investments in auction rate securities (ARS) issued by VIEs that we do not sponsor and, accordingly, are unable to obtain the total assets of the entity. In Table 7.2 , “Total VIE assets” represents the remaining principal balance of assets held by unconsolidated VIEs using the most current information available. For VIEs that obtain exposure to assets synthetically through derivative instruments, the remaining notional amount of the derivative is included in the asset balance. “Carrying value” is the amount in our consolidated balance sheet related to our involvement with the unconsolidated VIEs. “Maximum exposure to loss” from our involvement with off-balance sheet entities, which is a required disclosure under GAAP, is determined as the carrying value of our involvement with off-balance sheet (unconsolidated) VIEs plus the remaining undrawn liquidity and lending commitments, the notional amount of net written derivative contracts, and generally the notional amount of, or stressed loss estimate for, other commitments and guarantees. It represents estimated loss that would be incurred under severe, hypothetical circumstances, for which we believe the possibility is extremely remote, such as where the value of our interests and any associated collateral declines to zero, without any consideration of recovery or offset from any economic hedges. Accordingly, this required disclosure is not an indication of expected loss. For complete descriptions of our types of transactions with unconsolidated VIEs with which we have a significant continuing involvement, but we are not the primary beneficiary, see Note 8 (Securitizations and Variable Interest Entities) to Financial Statements in our 2016 Form 10-K. INVESTMENT FUNDS Subsequent to adopting ASU 2015-02 ( Amendments to the Consolidation Analysis ) in first quarter 2016, we do not consolidate these investment funds because we do not hold variable interests that are considered significant to the funds. We voluntarily waived a portion of our management fees for certain money market funds that are exempt from the consolidation analysis to ensure the funds maintained a minimum level of daily net investment income. The amount of fees waived was $14 million and $30 million in first quarter 2017 and 2016 , respectively. OTHER TRANSACTIONS WITH VIEs Other VIEs include certain entities that issue auction rate securities (ARS) which are debt instruments with long-term maturities, that re-price more frequently, and preferred equities with no maturity. At both March 31, 2017 and December 31, 2016 , we held $453 million of ARS issued by VIEs. We acquired the ARS pursuant to agreements entered into in 2008 and 2009. We do not consolidate the VIEs that issued the ARS because we do not have power over the activities of the VIEs. TRUST PREFERRED SECURITIES VIEs that we wholly own issue debt securities or preferred equity to third party investors. All of the proceeds of the issuance are invested in debt securities or preferred equity that we issue to the VIEs. The VIEs’ operations and cash flows relate only to the issuance, administration and repayment of the securities held by third parties. We do not consolidate these VIEs because the sole assets of the VIEs are receivables from us, even though we own all of the voting equity shares of the VIEs, have fully guaranteed the obligations of the VIEs and may have the right to redeem the third party securities under certain circumstances. In our consolidated balance sheet at March 31, 2017 , and December 31, 2016 , we reported the debt securities issued to the VIEs as long-term junior subordinated debt with a carrying value of $2.1 billion and the preferred equity securities issued to the VIEs as preferred stock with a carrying value of $2.5 billion at both dates. These amounts are in addition to the involvements in these VIEs included in the preceding table. Loan Sales and Securitization Activity We periodically transfer consumer and CRE loans and other types of financial assets in securitization and whole loan sale transactions. We typically retain the servicing rights from these sales and may continue to hold other beneficial interests in the transferred financial assets. We may also provide liquidity to investors in the beneficial interests and credit enhancements in the form of standby letters of credit. Through these transfers we may be exposed to liability under limited amounts of recourse as well as standard representations and warranties we make to purchasers and issuers. Table 7.3 presents the cash flows for our transfers accounted for as sales. Table 7.3: Cash Flows From Sales and Securitization Activity 2017 2016 (in millions) Mortgage loans Other financial assets Mortgage loans Other financial assets Quarter ended March 31, Proceeds from securitizations and whole loan sales $ 58,257 21 45,016 50 Fees from servicing rights retained 854 — 881 — Cash flows from other interests held (1) 834 — 407 1 Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions 2 — 3 — Agency securitizations (3) 23 — 47 — Servicing advances, net of repayments (142 ) — (68 ) — (1) Cash flows from other interests held include principal and interest payments received on retained bonds and excess cash flows received on interest-only strips. (2) Consists of cash paid to repurchase loans from investors and cash paid to investors to reimburse them for losses on individual loans that are already liquidated. (3) Represent loans repurchased from GNMA, FNMA, and FHLMC under representation and warranty provisions included in our loan sales contracts. First quarter 2017 and 2016 exclude $ 2.3 billion and $2.9 billion , respectively, in delinquent insured/guaranteed loans that we service and have exercised our option to purchase out of GNMA pools. These loans are predominantly insured by the FHA or guaranteed by the VA. In first quarter 2017 and 2016 , we recognized net gains of $132 million and $195 million , respectively, from transfers accounted for as sales of financial assets. These net gains largely relate to commercial mortgage securitizations and residential mortgage securitizations where the loans were not already carried at fair value. Sales with continuing involvement during first quarter 2017 and 2016 largely related to securitizations of residential mortgages that are sold to the government-sponsored entities (GSEs), including FNMA, FHLMC and GNMA (conforming residential mortgage securitizations). During first quarter 2017 and 2016 , we transferred $55.5 billion and $37.3 billion , respectively, in fair value of residential mortgages to unconsolidated VIEs and third-party investors and recorded the transfers as sales. Substantially all of these transfers did not result in a gain or loss because the loans were already carried at fair value. In connection with all of these transfers, in first quarter 2017 , we recorded a $546 million servicing asset, measured at fair value using a Level 3 measurement technique, securities of $2.8 billion , classified as Level 2, and a $8 million liability for repurchase losses which reflects management’s estimate of probable losses related to various representations and warranties for the loans transferred, initially measured at fair value. In first quarter 2016 , we recorded a $315 million servicing asset, securities of $832 million , and a $7 million liability. Table 7.4 presents the key weighted-average assumptions we used to measure residential mortgage servicing rights at the date of securitization. Table 7.4: Residential Mortgage Servicing Rights Residential mortgage servicing rights 2017 2016 Quarter ended March 31, Prepayment speed (1) 10.3 % 13.0 Discount rate 6.8 6.8 Cost to service ($ per loan) (2) $ 134 146 (1) The prepayment speed assumption for residential mortgage servicing rights includes a blend of prepayment speeds and default rates. Prepayment speed assumptions are influenced by mortgage interest rate inputs as well as our estimation of drivers of borrower behavior. (2) Includes costs to service and unreimbursed foreclosure costs, which can vary period to period depending on the mix of modified government-guaranteed loans sold to GNMA. During first quarter 2017 and 2016 , we transferred $3.3 billion and $8.1 billion , respectively, in carrying value of commercial mortgages to unconsolidated VIEs and third-party investors and recorded the transfers as sales. These transfers resulted in gains of $96 million and $135 million for the same periods, respectively, because the loans were carried at lower of cost or market value (LOCOM). In connection with these transfers, in first quarter 2017 , we recorded a servicing asset of $45 million , initially measured at fair value using a Level 3 measurement technique, and no securities were classified as Level 2. In first quarter 2016 , we recorded a servicing asset of $97 million and securities of $86 million . Retained Interests from Unconsolidated VIEs Table 7.5 provides key economic assumptions and the sensitivity of the current fair value of residential mortgage servicing rights and other interests held to immediate adverse changes in those assumptions. “Other interests held” relate to residential and commercial mortgage loan securitizations. Residential mortgage-backed securities retained in securitizations issued through GSEs, such as FNMA, FHLMC and GNMA, are excluded from the table because these securities have a remote risk of credit loss due to the GSE guarantee. These securities also have economic characteristics similar to GSE mortgage-backed securities that we purchase, which are not included in the table. Subordinated interests include only those bonds whose credit rating was below AAA by a major rating agency at issuance. Senior interests include only those bonds whose credit rating was AAA by a major rating agency at issuance. The information presented excludes trading positions held in inventory. Table 7.5: Retained Interests from Unconsolidated VIEs Other interests held Residential mortgage servicing rights (1) Interest-only strips Consumer Commercial (2) ($ in millions, except cost to service amounts) Subordinated bonds Subordinated bonds Senior bonds Fair value of interests held at March 31, 2017 $ 13,208 26 — 346 545 Expected weighted-average life (in years) 6.4 3.9 0.0 4.5 5.5 Key economic assumptions: Prepayment speed assumption (3) 10.2 % 17.2 — Decrease in fair value from: 10% adverse change $ 570 1 — 25% adverse change 1,353 2 — Discount rate assumption 6.9 % 13.6 — 4.3 2.9 Decrease in fair value from: 100 basis point increase $ 658 1 — 12 24 200 basis point increase 1,257 1 — 23 47 Cost to service assumption ($ per loan) 150 Decrease in fair value from: 10% adverse change 498 25% adverse change 1,246 Credit loss assumption — % 3.4 — Decrease in fair value from: 10% higher losses $ — — — 25% higher losses — — — Fair value of interests held at December 31, 2016 $ 12,959 28 1 249 552 Expected weighted-average life (in years) 6.3 3.9 8.3 3.1 5.1 Key economic assumptions: Prepayment speed assumption (3) 10.3 % 17.4 13.5 Decrease in fair value from: 10% adverse change $ 583 1 — 25% adverse change 1,385 2 — Discount rate assumption 6.8 % 13.3 10.7 5.2 2.7 Decrease in fair value from: 100 basis point increase $ 649 1 — 7 23 200 basis point increase 1,239 1 — 12 45 Cost to service assumption ($ per loan) 155 Decrease in fair value from: 10% adverse change 515 25% adverse change 1,282 Credit loss assumption 3.0 % 4.7 — Decrease in fair value from: 10% higher losses $ — — — 25% higher losses — — — (1) See narrative following this table for a discussion of commercial mortgage servicing rights. (2) Prepayment speed assumptions do not significantly impact the value of commercial mortgage securitization bonds as the underlying commercial mortgage loans experience significantly lower prepayments due to certain contractual restrictions, impacting the borrower’s ability to prepay the mortgage. (3) The prepayment speed assumption for residential mortgage servicing rights includes a blend of prepayment speeds and default rates. Prepayment speed assumptions are influenced by mortgage interest rate inputs as well as our estimation of drivers of borrower behavior. In addition to residential mortgage servicing rights (MSRs) included in the previous table, we have a small portfolio of commercial MSRs with a fair value of $2.1 billion and $2.0 billion at March 31, 2017 , and December 31, 2016 , respectively. The nature of our commercial MSRs, which are carried at LOCOM, is different from our residential MSRs. Prepayment activity on serviced loans does not significantly impact the value of commercial MSRs because, unlike residential mortgages, commercial mortgages experience significantly lower prepayments due to certain contractual restrictions, impacting the borrower’s ability to prepay the mortgage. Additionally, for our commercial MSR portfolio, we are typically master/primary servicer, but not the special servicer, who is separately responsible for the servicing and workout of delinquent and foreclosed loans. It is the special servicer, similar to our role as servicer of residential mortgage loans, who is affected by higher servicing and foreclosure costs due to an increase in delinquent and foreclosed loans. Accordingly, prepayment speeds and costs to service are not key assumptions for commercial MSRs as they do not significantly impact the valuation. The primary economic driver impacting the fair value of our commercial MSRs is forward interest rates, which are derived from market observable yield curves used to price capital markets instruments. Market interest rates significantly affect interest earned on custodial deposit balances. The sensitivity of the current fair value to an immediate adverse 25% change in the assumption about interest earned on deposit balances at March 31, 2017 , and December 31, 2016 , results in a decrease in fair value of $270 million and $259 million , respectively. See Note 8 (Mortgage Banking Activities) for further information on our commercial MSRs. We also have a loan to an unconsolidated third party VIE that we extended in fourth quarter 2014 in conjunction with our sale of government guaranteed student loans. The loan is carried at amortized cost and approximates fair value at March 31, 2017 , and December 31, 2016 . The carrying amount of the loan at March 31, 2017 , and December 31, 2016 , was $3.1 billion and $3.2 billion , respectively. The estimated fair value of the loan is considered a Level 3 measurement that is determined using discounted cash flows that are based on changes in the discount rate due to changes in the risk premium component (credit spreads). The primary economic assumption impacting the fair value of our loan is the discount rate. Changes in the credit loss assumption are not expected to affect the estimated fair value of the loan due to the government guarantee of the underlying collateral. The sensitivity of the current fair value to an immediate adverse increase of 200 basis points in the risk premium component of the discount rate assumption is a decrease in fair value of $129 million and $154 million at March 31, 2017 , and December 31, 2016 , respectively. The sensitivities in the preceding paragraphs and table are hypothetical and caution should be exercised when relying on this data. Changes in value based on variations in assumptions generally cannot be extrapolated because the relationship of the change in the assumption to the change in value may not be linear. Also, the effect of a variation in a particular assumption on the value of the other interests held is calculated independently without changing any other assumptions. In reality, changes in one factor may result in changes in others (for example, changes in prepayment speed estimates could result in changes in the credit losses), which might magnify or counteract the sensitivities. Off-Balance Sheet Loans Table 7.6 presents information about the principal balances of off-balance sheet loans that were sold or securitized, including residential mortgage loans sold to FNMA, FHLMC, GNMA and other investors, for which we have some form of continuing involvement (including servicer). Delinquent loans include loans 90 days or more past due and loans in bankruptcy, regardless of delinquency status. For loans sold or securitized where servicing is our only form of continuing involvement, we would only experience a loss if we were required to repurchase a delinquent loan or foreclosed asset due to a breach in representations and warranties associated with our loan sale or servicing contracts. Table 7.6: Off-Balance Sheet Loans Sold or Securitized Net charge-offs Total loans Delinquent loans and foreclosed assets (1) Quarter ended Mar 31, (in millions) Mar 31, 2017 Dec 31, 2016 Mar 31, 2017 Dec 31, 2016 2017 2016 Commercial: Real estate mortgage $ 100,695 106,745 3,076 3,325 295 83 Total commercial 100,695 106,745 3,076 3,325 295 83 Consumer: Real estate 1-4 family first mortgage 1,162,112 1,160,191 15,202 16,453 200 287 Total consumer 1,162,112 1,160,191 15,202 16,453 200 287 Total off-balance sheet sold or securitized loans (2) $ 1,262,807 1,266,936 18,278 19,778 495 370 (1) Includes $1.5 billion and $1.7 billion of commercial foreclosed assets and $1.6 billion and $1.8 billion of consumer foreclosed assets at March 31, 2017 , and December 31, 2016 , respectively. (2) At March 31, 2017 , and December 31, 2016 , the table includes total loans of $1.2 trillion at both dates, delinquent loans of $9.5 billion and $9.8 billion , and foreclosed assets of $1.2 billion and $1.3 billion , respectively, for FNMA, FHLMC and GNMA. Net charge-offs exclude loans sold to FNMA, FHLMC and GNMA as we do not service or manage the underlying real estate upon foreclosure and, as such, do not have access to net charge-off information. Transactions with Consolidated VIEs and Secured Borrowings Table 7.7 presents a summary of financial assets and liabilities for asset transfers accounted for as secured borrowings and involvements with consolidated VIEs. “Assets” are presented using GAAP measurement methods, which may include fair value, credit impairment or other adjustments, and therefore in some instances will differ from “Total VIE assets.” For VIEs that obtain exposure synthetically through derivative instruments, the remaining notional amount of the derivative is included in “Total VIE assets.” On the consolidated balance sheet, we separately disclose the consolidated assets of certain VIEs that can only be used to settle the liabilities of those VIEs. Table 7.7: Transactions with Consolidated VIEs and Secured Borrowings Carrying value (in millions) Total VIE assets Assets Liabilities Noncontrolling interests Net assets March 31, 2017 Secured borrowings: Municipal tender option bond securitizations $ 1,328 861 (785 ) — 76 Residential mortgage securitizations 131 127 (129 ) — (2 ) Total secured borrowings 1,459 988 (914 ) — 74 Consolidated VIEs: Commercial and industrial loans and leases 9,504 9,306 (2,812 ) (12 ) 6,482 Nonconforming residential mortgage loan securitizations 3,189 2,812 (950 ) — 1,862 Commercial real estate loans 1,747 1,747 — — 1,747 Structured asset finance 22 11 (8 ) — 3 Investment funds 147 147 (2 ) (69 ) 76 Other 157 134 (1 ) (51 ) 82 Total consolidated VIEs 14,766 14,157 (3,773 ) (132 ) 10,252 Total secured borrowings and consolidated VIEs $ 16,225 15,145 (4,687 ) (132 ) 10,326 December 31, 2016 Secured borrowings: Municipal tender option bond securitizations $ 1,473 998 (907 ) — 91 Residential mortgage securitizations 139 138 (136 ) — 2 Total secured borrowings 1,612 1,136 (1,043 ) — 93 Consolidated VIEs: Commercial and industrial loans and leases 8,821 8,623 (2,819 ) (14 ) 5,790 Nonconforming residential mortgage loan securitizations 3,349 2,974 (1,003 ) — 1,971 Commercial real estate loans 1,516 1,516 — — 1,516 Structured asset finance 23 13 (9 ) — 4 Investment funds 142 142 (2 ) (67 ) 73 Other 166 146 (1 ) (57 ) 88 Total consolidated VIEs 14,017 13,414 (3,834 ) (138 ) 9,442 Total secured borrowings and consolidated VIEs $ 15,629 14,550 (4,877 ) (138 ) 9,535 INVESTMENT FUNDS Subsequent to adopting ASU 2015-02 ( Amendments to the Consolidation Analysis ) in first quarter 2016, we consolidate certain investment funds because we have both the power to manage fund assets and hold variable interests that are considered significant. OTHER CONSOLIDATED VIE STRUCTURES In addition to the structure types included in the previous table, at both March 31, 2017 , and December 31, 2016 , we had approximately $6.0 billion of private placement debt financing issued through a consolidated VIE. The issuance is classified as long-term debt in our consolidated financial statements. At March 31, 2017 , we pledged approximately $414 million in loans (principal and interest eligible to be capitalized) and $6.2 billion in available-for-sale securities to collateralize the VIE’s borrowings, compared with $434 million and $6.1 billion , respectively, at December 31, 2016 . These assets were not transferred to the VIE, and accordingly we have excluded the VIE from the previous table. For complete descriptions of our accounting for transfers accounted for as secured borrowings and involvements with consolidated VIEs, see Note 8 (Securitizations and Variable Interest Entities) to Financial Statements in our 2016 Form 10-K.

Mortgage Banking Activities

Mortgage Banking Activities	3 Months Ended
	Mar. 31, 2017
Mortgage Banking Activities [Abstract]
Mortgage Banking Activities	Note 8: Mortgage Banking Activities Mortgage banking activities, included in the Community Banking and Wholesale Banking operating segments, consist of residential and commercial mortgage originations, sale activity and servicing. We apply the amortization method to commercial MSRs and apply the fair value method to residential MSRs. Table 8.1 presents the changes in MSRs measured using the fair value method. Table 8.1: Analysis of Changes in Fair Value MSRs Quarter ended March 31, (in millions) 2017 2016 Fair value, beginning of period $ 12,959 12,415 Servicing from securitizations or asset transfers (1) 583 366 Sales and other (2) (47 ) — Net additions 536 366 Changes in fair value: Due to changes in valuation model inputs or assumptions: Mortgage interest rates (3) 152 (1,084 ) Servicing and foreclosure costs (4) 27 27 Prepayment estimates and other (5) (5 ) 100 Net changes in valuation model inputs or assumptions 174 (957 ) Changes due to collection/realization of expected cash flows over time (461 ) (491 ) Total changes in fair value (287 ) (1,448 ) Fair value, end of period $ 13,208 11,333 (1) Includes impacts associated with exercising our right to repurchase delinquent loans from GNMA loan securitization pools. (2) Includes sales and transfers of MSRs, which can result in an increase of total reported MSRs if the sales or transfers are related to nonperforming loan portfolios. (3) Includes prepayment speed changes as well as other valuation changes due to changes in mortgage interest rates (such as changes in estimated interest earned on custodial deposit balances). (4) Includes costs to service and unreimbursed foreclosure costs. (5) Represents changes driven by other valuation model inputs or assumptions including prepayment speed estimation changes and other assumption updates. Prepayment speed estimation changes are influenced by observed changes in borrower behavior and other external factors that occur independent of interest rate changes. Table 8.2 presents the changes in amortized MSRs. Table 8.2: Analysis of Changes in Amortized MSRs Quarter ended March 31, (in millions) 2017 2016 Balance, beginning of period $ 1,406 1,308 Purchases 18 21 Servicing from securitizations or asset transfers 45 97 Amortization (67 ) (67 ) Balance, end of period (1) $ 1,402 1,359 Fair value of amortized MSRs: Beginning of period $ 1,956 1,680 End of period 2,051 1,725 (1) Commercial amortized MSRs are evaluated for impairment purposes by the following risk strata: agency (GSEs) for multi-family properties and non-agency. There was no valuation allowance recorded for the periods presented on the commercial amortized MSRs. We present the components of our managed servicing portfolio in Table 8.3 at unpaid principal balance for loans serviced and subserviced for others and at book value for owned loans serviced. Table 8.3: Managed Servicing Portfolio (in billions) Mar 31, 2017 Dec 31, 2016 Residential mortgage servicing: Serviced for others $ 1,204 1,205 Owned loans serviced 335 347 Subserviced for others 4 8 Total residential servicing 1,543 1,560 Commercial mortgage servicing: Serviced for others 474 479 Owned loans serviced 132 132 Subserviced for others 7 8 Total commercial servicing 613 619 Total managed servicing portfolio $ 2,156 2,179 Total serviced for others $ 1,678 1,684 Ratio of MSRs to related loans serviced for others 0.87 % 0.85 Table 8.4 presents the components of mortgage banking noninterest income. Table 8.4: Mortgage Banking Noninterest Income Quarter ended March 31, (in millions) 2017 2016 Servicing income, net: Servicing fees: Contractually specified servicing fees $ 907 954 Late charges 48 48 Ancillary fees 50 61 Unreimbursed direct servicing costs (1) (123 ) (153 ) Net servicing fees 882 910 Changes in fair value of MSRs carried at fair value: Due to changes in valuation model inputs or assumptions (2) (A) 174 (957 ) Changes due to collection/realization of expected cash flows over time (461 ) (491 ) Total changes in fair value of MSRs carried at fair value (287 ) (1,448 ) Amortization (67 ) (67 ) Net derivative gains (losses) from economic hedges (3) (B) (72 ) 1,455 Total servicing income, net 456 850 Net gains on mortgage loan origination/sales activities 772 748 Total mortgage banking noninterest income $ 1,228 1,598 Market-related valuation changes to MSRs, net of hedge results (2)(3) (A)+(B) $ 102 498 (1) Includes costs associated with foreclosures, unreimbursed interest advances to investors, and other interest costs. (2) Refer to the analysis of changes in fair value MSRs presented in Table 8.1 in this Note for more detail. (3) Represents results from economic hedges used to hedge the risk of changes in fair value of MSRs. See Note 12 (Derivatives Not Designated as Hedging Instruments) for additional discussion and detail. Table 8.5 summarizes the changes in our liability for mortgage loan repurchase losses. This liability is in “Accrued expenses and other liabilities” in our consolidated balance sheet and adjustments to the repurchase liability are recorded in net gains on mortgage loan origination/sales activities in “Mortgage banking” in our consolidated income statement. Because of the uncertainty in the various estimates underlying the mortgage repurchase liability, there is a range of losses in excess of the recorded mortgage repurchase liability that is reasonably possible. The estimate of the range of possible loss for representations and warranties does not represent a probable loss, and is based on currently available information, significant judgment, and a number of assumptions that are subject to change. The high end of this range of reasonably possible losses exceeded our recorded liability by $155 million at March 31, 2017 , and was determined based upon modifying the assumptions (particularly to assume significant changes in investor repurchase demand practices) used in our best estimate of probable loss to reflect what we believe to be the high end of reasonably possible adverse assumptions. Table 8.5: Analysis of Changes in Liability for Mortgage Loan Repurchase Losses Quarter ended March 31, (in millions) 2017 2016 Balance, beginning of period $ 229 378 Provision for repurchase losses: Loan sales 8 7 Change in estimate (1) (8 ) (19 ) Net additions (reductions) — (12 ) Losses (7 ) (11 ) Balance, end of period $ 222 355 (1) Results from changes in investor demand and mortgage insurer practices, credit deterioration and changes in the financial stability of correspondent lenders.

Intangible Assets

Intangible Assets	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Note 9: Intangible Assets Table 9.1 presents the gross carrying value of intangible assets and accumulated amortization. Table 9.1: Intangible Assets March 31, 2017 December 31, 2016 (in millions) Gross carrying value Accumulated amortization Net carrying value Gross carrying value Accumulated amortization Net carrying value Amortized intangible assets (1): MSRs (2) $ 3,658 (2,256 ) 1,402 3,595 (2,189 ) 1,406 Core deposit intangibles 12,834 (11,427 ) 1,407 12,834 (11,214 ) 1,620 Customer relationship and other intangibles 3,945 (2,917 ) 1,028 3,928 (2,839 ) 1,089 Total amortized intangible assets $ 20,437 (16,600 ) 3,837 20,357 (16,242 ) 4,115 Unamortized intangible assets: MSRs (carried at fair value) (2) $ 13,208 12,959 Goodwill 26,666 26,693 Trademark 14 14 (1) Excludes fully amortized intangible assets. (2) See Note 8 (Mortgage Banking Activities) for additional information on MSRs. Table 9.2 provides the current year and estimated future amortization expense for amortized intangible assets. We based our projections of amortization expense shown below on existing asset balances at March 31, 2017 . Future amortization expense may vary from these projections. Table 9.2: Amortization Expense for Intangible Assets (in millions) Amortized MSRs Core deposit intangibles Customer relationship and other intangibles (1) Total Three months ended March 31, 2017 (actual) $ 67 213 79 359 Estimate for the remainder of 2017 $ 190 638 230 1,058 Estimate for year ended December 31, 2018 218 769 300 1,287 2019 194 108 302 2020 178 89 267 2021 153 76 229 2022 134 63 197 (1) The three months ended March 31, 2017 balance includes $3 million for lease intangible amortization. Table 9.3 shows the allocation of goodwill to our reportable operating segments. Table 9.3: Goodwill (in millions) Community Banking Wholesale Banking Wealth and Investment Management Consolidated Company December 31, 2015 $ 16,849 7,475 1,205 25,529 Reduction in goodwill related to divested businesses and other — (58 ) — (58 ) Goodwill from business combinations — 1,532 — 1,532 March 31, 2016 $ 16,849 8,949 1,205 27,003 December 31, 2016 $ 16,849 8,585 1,259 26,693 Reduction in goodwill related to divested businesses and other — (27 ) — (27 ) March 31, 2017 $ 16,849 8,558 1,259 26,666 We assess goodwill for impairment at a reporting unit level, which is one level below the operating segments. See Note 18 (Operating Segments) for further information on management reporting.

Guarantees, Pledged Assets and

Guarantees, Pledged Assets and Collateral	3 Months Ended
	Mar. 31, 2017
Guarantees [Abstract]
Guarantees, Pledged Assets and Collateral	90 days Total gross obligation March 31, 2017 Repurchase agreements $ 64,530 12,321 5,723 4,966 87,540 Securities lending 7,054 432 1,247 — 8,733 Total repurchases and securities lending (1) $ 71,584 12,753 6,970 4,966 96,273 December 31, 2016 Repurchase agreements $ 60,516 9,598 6,762 5,228 82,104 Securities lending 5,565 167 1,275 — 7,007 Total repurchases and securities lending (1) $ 66,081 9,765 8,037 5,228 89,111 (1) Securities lending is executed under agreements that allow either party to terminate the transaction without notice, while repurchase agreements have a term structure to them that technically matures at a point in time. The overnight/continuous repurchase agreements require election of both parties to roll the trade rather than the election to terminate the arrangement as in securities lending." id="sjs-B4">Note 10: Guarantees, Pledged Assets and Collateral Guarantees are contracts that contingently require us to make payments to a guaranteed party based on an event or a change in an underlying asset, liability, rate or index. Guarantees are generally in the form of standby letters of credit, securities lending and other indemnifications, written put options, recourse obligations, and other types of arrangements. For complete descriptions of our guarantees, see Note 14 (Guarantees, Pledged Assets and Collateral) to Financial Statements in our 2016 Form 10-K. Table 10.1 shows carrying value, maximum exposure to loss on our guarantees and the related non-investment grade amounts. Table 10.1: Guarantees – Carrying Value and Maximum Exposure to Loss Maximum exposure to loss (in millions) Carrying value of obligation (asset) Expires in one year or less Expires after one year through three years Expires after three years through five years Expires after five years Total Non- investment grade March 31, 2017 Standby letters of credit (1) $ 39 15,818 8,319 3,288 661 28,086 9,594 Securities lending and other indemnifications (2) — — — 1 793 794 2 Written put options (3) (129 ) 12,708 10,690 4,354 1,438 29,190 17,870 Loans and MHFS sold with recourse (4) 54 213 533 980 8,739 10,465 7,425 Factoring guarantees (5) — 766 — — — 766 766 Other guarantees 4 13 20 17 4,507 4,557 5 Total guarantees $ (32 ) 29,518 19,562 8,640 16,138 73,858 35,662 December 31, 2016 Standby letters of credit (1) $ 38 16,050 8,727 3,194 658 28,629 9,898 Securities lending and other indemnifications (2) — — — 1 1,166 1,167 2 Written put options (3) 37 10,427 10,805 4,573 1,216 27,021 15,915 Loans and MHFS sold with recourse (4) 55 84 637 947 8,592 10,260 7,228 Factoring guarantees (5) — 1,109 — — — 1,109 1,109 Other guarantees 6 19 21 17 3,580 3,637 15 Total guarantees $ 136 27,689 20,190 8,732 15,212 71,823 34,167 (1) Total maximum exposure to loss includes direct pay letters of credit (DPLCs) of $8.8 billion and $9.2 billion at March 31, 2017 , and December 31, 2016 , respectively. We issue DPLCs to provide credit enhancements for certain bond issuances. Beneficiaries (bond trustees) may draw upon these instruments to make scheduled principal and interest payments, redeem all outstanding bonds because a default event has occurred, or for other reasons as permitted by the agreement. We also originate multipurpose lending commitments under which borrowers have the option to draw on the facility in one of several forms, including as a standby letter of credit. Total maximum exposure to loss includes the portion of these facilities for which we have issued standby letters of credit under the commitments. (2) Includes indemnifications provided to certain third-party clearing agents. Outstanding customer obligations under these arrangements were $75 million and $175 million with related collateral of $718 million and $991 million at March 31, 2017 , and December 31, 2016 , respectively. Estimated maximum exposure to loss was $793 million at March 31, 2017 and $1.2 billion at December 31, 2016 . (3) Written put options, which are in the form of derivatives, are also included in the derivative disclosures in Note 12 (Derivatives). (4) Represent recourse provided, predominantly to the GSEs, on loans sold under various programs and arrangements. Under these arrangements, we repurchased $1 million of loans associated with these agreements in the first quarter 2017 , and $1 million in the same period of 2016 . (5) Consists of guarantees made under certain factoring arrangements to purchase trade receivables from third parties, generally upon their request, if receivable debtors default on their payment obligations. “Maximum exposure to loss” and “Non-investment grade” are required disclosures under GAAP. Non-investment grade represents those guarantees on which we have a higher risk of being required to perform under the terms of the guarantee. If the underlying assets under the guarantee are non-investment grade (that is, an external rating that is below investment grade or an internal credit default grade that is equivalent to a below investment grade external rating), we consider the risk of performance to be high. Internal credit default grades are determined based upon the same credit policies that we use to evaluate the risk of payment or performance when making loans and other extensions of credit. Credit quality indicators we usually consider in evaluating risk of payments or performance are described in Note 5 (Loans and Allowance for Credit Losses). Maximum exposure to loss represents the estimated loss that would be incurred under an assumed hypothetical circumstance, despite what we believe is its extremely remote possibility, where the value of our interests and any associated collateral declines to zero. Maximum exposure to loss estimates in Table 10.1 do not reflect economic hedges or collateral we could use to offset or recover losses we may incur under our guarantee agreements. Accordingly, this required disclosure is not an indication of expected loss. We believe the carrying value, which is either fair value for derivative-related products or the allowance for lending-related commitments, is more representative of our exposure to loss than maximum exposure to loss. Pledged Assets As part of our liquidity management strategy, we pledge various assets to secure trust and public deposits, borrowings and letters of credit from the FHLB and FRB, securities sold under agreements to repurchase (repurchase agreements), securities lending arrangements, and for other purposes as required or permitted by law or insurance statutory requirements. The types of collateral we pledge include securities issued by federal agencies, GSEs, domestic and foreign companies and various commercial and consumer loans. Table 10.2 provides the total carrying amount of pledged assets by asset type and pledged off-balance sheet securities for securities financings. The table excludes pledged consolidated VIE assets of $14.2 billion and $13.4 billion at March 31, 2017 , and December 31, 2016 , respectively, which can only be used to settle the liabilities of those entities. The table also excludes $1.0 billion and $1.1 billion in assets pledged in transactions with VIE's accounted for as secured borrowings at March 31, 2017 , and December 31, 2016 , respectively. See Note 7 (Securitizations and Variable Interest Entities) for additional information on consolidated VIE assets and secured borrowings. Table 10.2: Pledged Assets (in millions) Mar 31, Dec 31, Trading assets and other (1) $ 93,849 84,603 Investment securities (2) 78,163 90,946 Mortgages held for sale and loans (3) 506,776 516,112 Total pledged assets $ 678,788 691,661 (1) Consists of trading assets of $31.1 billion and $33.2 billion at March 31, 2017 , and December 31, 2016 , respectively and off-balance sheet securities of $62.7 billion and $51.4 billion as of the same dates, respectively, that are pledged as collateral for repurchase agreements and other securities financings. Total trading assets and other includes $93.4 billion and $84.2 billion at March 31, 2017 , and December 31, 2016 , respectively that permit the secured parties to sell or repledge the collateral. (2) Includes carrying value of $4.8 billion and $6.2 billion (fair value of $4.7 billion and $ 6.2 billion ) in collateral for repurchase agreements at March 31, 2017 , and December 31, 2016 , respectively, which are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Also includes $101 million and $617 million in collateral pledged under repurchase agreements at March 31, 2017 , and December 31, 2016 , respectively, that permit the secured parties to sell or repledge the collateral. All other pledged securities are pursuant to agreements that do not permit the secured party to sell or repledge the collateral. (3) Includes mortgages held for sale of $9.7 billion and $15.8 billion at March 31, 2017 , and December 31, 2016 , respectively. Substantially all of the total mortgages held for sale and loans are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Amounts exclude $888 million and $1.2 billion at March 31, 2017 , and December 31, 2016 , respectively, of pledged loans recorded on our balance sheet representing certain delinquent loans that are eligible for repurchase from GNMA loan securitizations. Securities Financing Activities We enter into resale and repurchase agreements and securities borrowing and lending agreements (collectively, “securities financing activities”) typically to finance trading positions (including securities and derivatives), acquire securities to cover short trading positions, accommodate customers’ financing needs, and settle other securities obligations. These activities are conducted through our broker dealer subsidiaries and to a lesser extent through other bank entities. Most of our securities financing activities involve high quality, liquid securities such as U.S. Treasury securities and government agency securities, and to a lesser extent, less liquid securities, including equity securities, corporate bonds and asset-backed securities. We account for these transactions as collateralized financings in which we typically receive or pledge securities as collateral. We believe these financing transactions generally do not have material credit risk given the collateral provided and the related monitoring processes. OFFSETTING OF RESALE AND REPURCHASE AGREEMENTS AND SECURITIES BORROWING AND LENDING AGREEMENTS Table 10.3 presents resale and repurchase agreements subject to master repurchase agreements (MRA) and securities borrowing and lending agreements subject to master securities lending agreements (MSLA). We account for transactions subject to these agreements as collateralized financings, and those with a single counterparty are presented net on our balance sheet, provided certain criteria are met that permit balance sheet netting. Most transactions subject to these agreements do not meet those criteria and thus are not eligible for balance sheet netting. Collateral we pledged consists of non-cash instruments, such as securities or loans, and is not netted on the balance sheet against the related liability. Collateral we received includes securities or loans and is not recognized on our balance sheet. Collateral pledged or received may be increased or decreased over time to maintain certain contractual thresholds as the assets underlying each arrangement fluctuate in value. Generally, these agreements require collateral to exceed the asset or liability recognized on the balance sheet. The following table includes the amount of collateral pledged or received related to exposures subject to enforceable MRAs or MSLAs. While these agreements are typically over-collateralized, U.S. GAAP requires disclosure in this table to limit the reported amount of such collateral to the amount of the related recognized asset or liability for each counterparty. In addition to the amounts included in Table 10.3 , we also have balance sheet netting related to derivatives that is disclosed in Note 12 (Derivatives). Table 10.3: Offsetting – Resale and Repurchase Agreements (in millions) Mar 31, Dec 31, Assets: Resale and securities borrowing agreements Gross amounts recognized $ 110,061 91,123 Gross amounts offset in consolidated balance sheet (1) (20,529 ) (11,680 ) Net amounts in consolidated balance sheet (2) 89,532 79,443 Collateral not recognized in consolidated balance sheet (3) (88,755 ) (78,837 ) Net amount (4) $ 777 606 Liabilities: Repurchase and securities lending agreements Gross amounts recognized (5) $ 96,273 89,111 Gross amounts offset in consolidated balance sheet (1) (20,529 ) (11,680 ) Net amounts in consolidated balance sheet (6) 75,744 77,431 Collateral pledged but not netted in consolidated balance sheet (7) (75,505 ) (77,184 ) Net amount (8) $ 239 247 (1) Represents recognized amount of resale and repurchase agreements with counterparties subject to enforceable MRAs that have been offset in the consolidated balance sheet. (2) At March 31, 2017 , and December 31, 2016 , includes $68.3 billion and $58.1 billion , respectively, classified on our consolidated balance sheet in federal funds sold, securities purchased under resale agreements and other short-term investments and $21.2 billion and $21.3 billion , respectively, in loans. (3) Represents the fair value of collateral we have received under enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized asset due from each counterparty. At March 31, 2017 , and December 31, 2016 , we have received total collateral with a fair value of $120.8 billion and $102.3 billion , respectively, all of which, we have the right to sell or repledge. These amounts include securities we have sold or repledged to others with a fair value of $61.5 billion at March 31, 2017 , and $50.0 billion at December 31, 2016 . (4) Represents the amount of our exposure that is not collateralized and/or is not subject to an enforceable MRA or MSLA. (5) For additional information on underlying collateral and contractual maturities, see the "Repurchase and Securities Lending Agreements" section in this Note. (6) Amount is classified in short-term borrowings on our consolidated balance sheet. (7) Represents the fair value of collateral we have pledged, related to enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized liability owed to each counterparty. At March 31, 2017 , and December 31, 2016 , we have pledged total collateral with a fair value of $98.6 billion and $91.4 billion , respectively, of which, the counterparty does not have the right to sell or repledge $5.1 billion as of March 31, 2017 and $6.6 billion as of December 31, 2016 . (8) Represents the amount of our obligation that is not covered by pledged collateral and/or is not subject to an enforceable MRA or MSLA. REPURCHASE AND SECURITIES LENDING AGREEMENTS Securities sold under repurchase agreements and securities lending arrangements are effectively short-term collateralized borrowings. In these transactions, we receive cash in exchange for transferring securities as collateral and recognize an obligation to reacquire the securities for cash at the transaction's maturity. These types of transactions create risks, including (1) the counterparty may fail to return the securities at maturity, (2) the fair value of the securities transferred may decline below the amount of our obligation to reacquire the securities, and therefore create an obligation for us to pledge additional amounts, and (3) the counterparty may accelerate the maturity on demand, requiring us to reacquire the security prior to contractual maturity. We attempt to mitigate these risks by the fact that most of our securities financing activities involve highly liquid securities, we underwrite and monitor the financial strength of our counterparties, we monitor the fair value of collateral pledged relative to contractually required repurchase amounts, and we monitor that our collateral is properly returned through the clearing and settlement process in advance of our cash repayment. Table 10.4 provides the underlying collateral types of our gross obligations under repurchase and securities lending agreements. Table 10.4: Underlying Collateral Types of Gross Obligations (in millions) Mar 31, Dec 31, Repurchase agreements: Securities of U.S. Treasury and federal agencies $ 44,376 34,335 Securities of U.S. States and political subdivisions 106 81 Federal agency mortgage-backed securities 28,726 32,669 Non-agency mortgage-backed securities 1,800 2,167 Corporate debt securities 7,481 6,829 Asset-backed securities 2,370 3,010 Equity securities 1,530 1,309 Other 1,151 1,704 Total repurchases 87,540 82,104 Securities lending: Securities of U.S. Treasury and federal agencies 130 152 Federal agency mortgage-backed securities 240 104 Non-agency mortgage-backed securities — 1 Corporate debt securities 556 653 Equity securities (1) 7,807 6,097 Total securities lending 8,733 7,007 Total repurchases and securities lending $ 96,273 89,111 (1) Equity securities are generally exchange traded and either re-hypothecated under margin lending agreements or obtained through contemporaneous securities borrowing transactions with other counterparties. Table 10.5 provides the contractual maturities of our gross obligations under repurchase and securities lending agreements. Table 10.5: Contractual Maturities of Gross Obligations (in millions) Overnight/continuous Up to 30 days 30-90 days >90 days Total gross obligation March 31, 2017 Repurchase agreements $ 64,530 12,321 5,723 4,966 87,540 Securities lending 7,054 432 1,247 — 8,733 Total repurchases and securities lending (1) $ 71,584 12,753 6,970 4,966 96,273 December 31, 2016 Repurchase agreements $ 60,516 9,598 6,762 5,228 82,104 Securities lending 5,565 167 1,275 — 7,007 Total repurchases and securities lending (1) $ 66,081 9,765 8,037 5,228 89,111 (1) Securities lending is executed under agreements that allow either party to terminate the transaction without notice, while repurchase agreements have a term structure to them that technically matures at a point in time. The overnight/continuous repurchase agreements require election of both parties to roll the trade rather than the election to terminate the arrangement as in securities lending.

Legal Actions

Legal Actions	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Legal Actions	Note 11: Legal Actions The following supplements our discussion of certain matters previously reported in Note 15 (Legal Actions) to Financial Statements in our 2016 Form 10-K for events occurring during first quarter 2017 . INTERCHANGE LITIGATION Wells Fargo Bank, N.A., Wells Fargo & Company, Wachovia Bank, N.A. and Wachovia Corporation are named as defendants, separately or in combination, in putative class actions filed on behalf of a plaintiff class of merchants and in individual actions brought by individual merchants with regard to the interchange fees associated with Visa and MasterCard payment card transactions. These actions have been consolidated in the U.S. District Court for the Eastern District of New York. Visa, MasterCard and several banks and bank holding companies are named as defendants in these actions. The amended and consolidated complaint asserts claims against defendants based on alleged violations of federal and state antitrust laws and seeks damages, as well as injunctive relief. Plaintiff merchants allege that Visa, MasterCard and payment card issuing banks unlawfully colluded to set interchange rates. Plaintiffs also allege that enforcement of certain Visa and MasterCard rules and alleged tying and bundling of services offered to merchants are anticompetitive. Wells Fargo and Wachovia, along with other defendants and entities, are parties to Loss and Judgment Sharing Agreements, which provide that they, along with other entities, will share, based on a formula, in any losses from the Interchange Litigation. On July 13, 2012, Visa, MasterCard and the financial institution defendants, including Wells Fargo, signed a memorandum of understanding with plaintiff merchants to resolve the consolidated class actions and reached a separate settlement in principle of the consolidated individual actions. The settlement payments to be made by all defendants in the consolidated class and individual actions totaled approximately $6.6 billion before reductions applicable to certain merchants opting out of the settlement. The class settlement also provided for the distribution to class merchants of 10 basis points of default interchange across all credit rate categories for a period of eight consecutive months. The District Court granted final approval of the settlement, which was appealed to the Second Circuit Court of Appeals by settlement objector merchants. Other merchants opted out of the settlement and are pursuing several individual actions. On June 30, 2016, the Second Circuit Court of Appeals vacated the settlement agreement and reversed and remanded the consolidated action to the U.S. District Court for the Eastern District of New York for further proceedings. On November 23, 2016, prior class counsel filed a petition to the United States Supreme Court, seeking review of the reversal of the settlement by the Second Circuit, and the Supreme Court denied the petition on March 27, 2017. On November 30, 2016, the District Court appointed lead class counsel for a damages class and an equitable relief class. Several of the opt-out litigations were settled during the pendency of the Second Circuit appeal while others remain pending. Discovery is proceeding in the opt-out litigations and the remanded class cases. RMBS TRUSTEE LITIGATION In November 2014, a group of institutional investors (the “Institutional Investor Plaintiffs”) filed a putative class action complaint in the United States District Court for the Southern District of New York against Wells Fargo Bank, N.A., alleging claims against the bank in its capacity as trustee for a number of residential mortgage-backed securities (“RMBS”) trusts (the “Federal Court Complaint”). Similar complaints have been filed against other trustees in various courts, including in the Southern District of New York, in New York state court and in other states, by RMBS investors. The Federal Court Complaint alleges that Wells Fargo Bank, N.A., as trustee, caused losses to investors and asserts causes of action based upon, among other things, the trustee's alleged failure to notify and enforce repurchase obligations of mortgage loan sellers for purported breaches of representations and warranties, notify investors of alleged events of default, and abide by appropriate standards of care following alleged events of default. Plaintiffs seek money damages in an unspecified amount, reimbursement of expenses, and equitable relief. In December 2014 and December 2015, certain other investors filed four complaints alleging similar claims against Wells Fargo Bank, N.A. in the Southern District of New York, and the various cases pending against us are proceeding before the same judge. On January 19, 2016, an order was entered in connection with the Federal Court Complaint in which the District Court dismissed claims related to certain of the trusts at issue (the “Dismissed Trusts”). Our motion to dismiss the Federal Court Complaint was granted in part and denied in part in March 2017 . A complaint raising similar allegations to the Federal Court Complaint was filed in May 2016 in New York state court by a different plaintiff investor. In addition, the Institutional Investor Plaintiffs subsequently filed a complaint relating to the Dismissed Trusts and certain additional trusts in California state court (the “California Action”). The California Action was subsequently dismissed in September 2016. In December 2016, the Institutional Investor Plaintiffs filed a new putative class action complaint in New York state court in respect of 261 RMBS trusts, including the Dismissed Trusts, for which Wells Fargo Bank, N.A. serves or served as trustee. SALES PRACTICES MATTERS Federal, state and local government agencies, including the United States Department of Justice, the United States Securities and Exchange Commission and the United States Department of Labor, and state attorneys general and prosecutors’ offices, as well as Congressional committees, have undertaken formal or informal inquiries, investigations or examinations arising out of certain sales practices of the Company that were the subject of settlements with the Consumer Financial Protection Bureau, the Office of the Comptroller of the Currency and the Office of the Los Angeles City Attorney announced by the Company on September 8, 2016. The Company has responded, and continues to respond, to requests from a number of the foregoing seeking information regarding these sales practices and the circumstances of the settlements and related matters. In addition, a number of lawsuits have also been filed by non-governmental parties seeking damages or other remedies related to these sales practices. First, various class plaintiffs purporting to represent consumers who allege that they received products or services without their authorization or consent have brought eleven separate putative class action lawsuits against the Company in the United States District Court for the Northern District of California and various other jurisdictions. In April 2017, the Company entered into a settlement agreement in the first-filed action, Jabbari v. Wells Fargo Bank, N.A ., to resolve any claims regarding products or services provided without authorization or consent for the time period May 1, 2002 to April 20, 2017. Pursuant to the settlement, we will pay $142 million for remediation, attorneys’ fees, and settlement fund claims administration. The settlement is subject to approval by the District Court. Second, Wells Fargo shareholders are pursuing a consolidated securities fraud class action in the United States District Court for the Northern District of California alleging certain misstatements and omissions in the Company’s disclosures related to sales practices matters. Third, Wells Fargo shareholders have brought numerous shareholder derivative lawsuits asserting breach of fiduciary claims, among others, against current and former directors and officers for their alleged failure to detect and prevent sales practices issues, which lawsuits are consolidated into two separate actions in the United States District Court for the Northern District of California and California state court, as well as a third in Delaware state court. Fourth, a range of employment litigation has been brought against Wells Fargo, including an Employee Retirement Income Security Act class action in the United States District Court for the District of Minnesota brought on behalf of 401(k) plan participants; class actions brought in the United States District Court for the Northern District of California and New York state court on behalf of employees who allege they protested sales practice misconduct and/or were terminated for not meeting sales goals; various wage and hour class actions brought in federal and state court in California, New Jersey, and Pennsylvania on behalf of non-exempt branch based employees alleging sales pressure resulted in uncompensated overtime; and multiple single plaintiff Sarbanes-Oxley Act complaints and state law whistleblower actions filed with the Department of Labor or in various state courts alleging adverse employment action for raising sales practice misconduct issues. VA LOAN GUARANTY PROGRAM QUI TAM Wells Fargo Bank, N.A. is named as a defendant in a qui tam lawsuit, United States ex rel. Bibby & Donnelly v. Wells Fargo, et al. , brought in the U.S. District Court for the Northern District of Georgia by two individuals on behalf of the United States under the federal False Claims Act. The lawsuit was originally filed on March 8, 2006, and then unsealed on October 3, 2011. The United States elected not to intervene in the action. The plaintiffs allege that Wells Fargo charged certain impermissible closing or origination fees to borrowers under a U.S. Department of Veteran Affairs’ (“VA”) loan guaranty program and then made false statements to the VA concerning such fees in violation of the civil False Claims Act. On their behalf and on behalf of the United States, the plaintiffs seek, among other things, damages equal to three times the amount paid by the VA in connection with any loan guaranty as to which the borrower paid certain impermissible fees or charges less the net amount received by the VA upon any re-sale of collateral, statutory civil penalties of between $5,500 and $11,000 per False Claims Act violation, and attorneys’ fees. The parties have engaged in extensive discovery, and both parties have moved for judgment in their favor as a matter of law. The trial date has been postponed and a status conference is expected to be scheduled for May 2017. OUTLOOK When establishing a liability for contingent litigation losses, the Company determines a range of potential losses for each matter that is both probable and estimable, and records the amount it considers to be the best estimate within the range. The high end of the range of reasonably possible potential litigation losses in excess of the Company’s liability for probable and estimable losses was approximately $2.0 billion as of March 31, 2017 . The outcomes of legal actions are unpredictable and subject to significant uncertainties, and it is inherently difficult to determine whether any loss is probable or even possible. It is also inherently difficult to estimate the amount of any loss and there may be matters for which a loss is probable or reasonably possible but not currently estimable. Accordingly, actual losses may be in excess of the established liability or the range of reasonably possible loss. Wells Fargo is unable to determine whether the ultimate resolution of either the mortgage related regulatory investigations or the sales practices matters will have a material adverse effect on its consolidated financial condition. Based on information currently available, advice of counsel, available insurance coverage and established reserves, Wells Fargo believes that the eventual outcome of other actions against Wells Fargo and/or its subsidiaries will not, individually or in the aggregate, have a material adverse effect on Wells Fargo’s consolidated financial condition. However, it is possible that the ultimate resolution of a matter, if unfavorable, may be material to Wells Fargo’s results of operations for any particular period.

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Note 12: Derivatives We use derivatives to manage exposure to market risk, including interest rate risk, credit risk and foreign currency risk, and to assist customers with their risk management objectives. We designate certain derivatives as hedging instruments in a qualifying hedge accounting relationship (fair value or cash flow hedge). Our remaining derivatives consist of economic hedges that do not qualify for hedge accounting and derivatives held for customer accommodation trading, or other purposes. For more information on our derivative activities, see Note 16 (Derivatives) to Financial Statements in our 2016 Form 10-K. Table 12.1 presents the total notional or contractual amounts and fair values for our derivatives. Derivative transactions can be measured in terms of the notional amount, but this amount is not recorded on the balance sheet and is not, when viewed in isolation, a meaningful measure of the risk profile of the instruments. The notional amount is generally not exchanged but is used only as the basis on which interest and other payments are determined. Table 12.1: Notional or Contractual Amounts and Fair Values of Derivatives March 31, 2017 December 31, 2016 Notional or contractual amount Fair value Notional or contractual amount Fair value (in millions) Derivative assets Derivative liabilities Derivative Derivative Derivatives designated as hedging instruments Interest rate contracts (1) $ 243,374 5,910 2,876 235,222 6,587 2,710 Foreign exchange contracts (1) 27,692 540 2,556 25,861 673 2,779 Total derivatives designated as qualifying hedging instruments 6,450 5,432 7,260 5,489 Derivatives not designated as hedging instruments Economic hedges: Interest rate contracts (2) 222,692 547 548 228,051 1,098 1,441 Equity contracts 9,036 586 98 7,964 545 83 Foreign exchange contracts 17,308 130 142 20,435 626 165 Credit contracts – protection purchased 161 85 — 482 102 — Subtotal 1,348 788 2,371 1,689 Customer accommodation trading and other derivatives: Interest rate contracts 7,231,404 57,030 60,008 6,018,370 57,583 61,058 Commodity contracts 63,882 1,738 1,348 65,532 3,057 2,551 Equity contracts 174,984 5,670 6,712 151,675 4,813 6,029 Foreign exchange contracts 325,923 7,048 6,930 318,999 9,595 9,798 Credit contracts – protection sold 10,601 142 300 10,483 85 389 Credit contracts – protection purchased 19,652 296 184 19,964 365 138 Other contracts 977 — 36 961 — 47 Subtotal 71,924 75,518 75,498 80,010 Total derivatives not designated as hedging instruments 73,272 76,306 77,869 81,699 Total derivatives before netting 79,722 81,738 85,129 87,188 Netting (3) (67,158 ) (69,277 ) (70,631 ) (72,696 ) Total $ 12,564 12,461 14,498 14,492 (1) Notional amounts presented exclude $ 1.9 billion of interest rate contracts at both March 31, 2017 , and December 31, 2016 , for certain derivatives that are combined for designation as a hedge on a single instrument. The notional amount for foreign exchange contracts at March 31, 2017 , and December 31, 2016 , excludes $9.8 billion and $9.6 billion , respectively, for certain derivatives that are combined for designation as a hedge on a single instrument. (2) Includes economic hedge derivatives used to hedge the risk of changes in the fair value of residential MSRs, MHFS, loans, derivative loan commitments and other interests held. (3) Represents balance sheet netting of derivative asset and liability balances, related cash collateral and portfolio level counterparty valuation adjustments. See Table 12.2 for further information. Table 12.2 provides information on the gross fair values of derivative assets and liabilities, the balance sheet netting adjustments and the resulting net fair value amount recorded on our balance sheet, as well as the non-cash collateral associated with such arrangements. We execute substantially all of our derivative transactions under master netting arrangements and reflect all derivative balances and related cash collateral subject to enforceable master netting arrangements on a net basis within the balance sheet. The “Gross amounts recognized” column in the following table includes $70.5 billion and $75.5 billion of gross derivative assets and liabilities, respectively, at March 31, 2017 , and $74.4 billion and $78.4 billion , respectively, at December 31, 2016 , with counterparties subject to enforceable master netting arrangements that are carried on the balance sheet net of offsetting amounts. The remaining gross derivative assets and liabilities of $9.2 billion and $6.2 billion , respectively, at March 31, 2017 , and $10.7 billion and $8.7 billion , respectively, at December 31, 2016 , include those with counterparties subject to master netting arrangements for which we have not assessed the enforceability because they are with counterparties where we do not currently have positions to offset, those subject to master netting arrangements where we have not been able to confirm the enforceability and those not subject to master netting arrangements. As such, we do not net derivative balances or collateral within the balance sheet for these counterparties. We determine the balance sheet netting adjustments based on the terms specified within each master netting arrangement. We disclose the balance sheet netting amounts within the column titled “Gross amounts offset in consolidated balance sheet.” Balance sheet netting adjustments are determined at the counterparty level for which there may be multiple contract types. For disclosure purposes, we allocate these netting adjustments to the contract type for each counterparty proportionally based upon the “Gross amounts recognized” by counterparty. As a result, the net amounts disclosed by contract type may not represent the actual exposure upon settlement of the contracts. We do not net non-cash collateral that we receive and pledge on the balance sheet. For disclosure purposes, we present the fair value of this non-cash collateral in the column titled “Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)” within the table. We determine and allocate the Disclosure-only netting amounts in the same manner as balance sheet netting amounts. The “Net amounts” column within Table 12.2 represents the aggregate of our net exposure to each counterparty after considering the balance sheet and Disclosure-only netting adjustments. We manage derivative exposure by monitoring the credit risk associated with each counterparty using counterparty specific credit risk limits, using master netting arrangements and obtaining collateral. Derivative contracts executed in over-the-counter markets include bilateral contractual arrangements that are not cleared through a central clearing organization but are typically subject to master netting arrangements. The percentage of our bilateral derivative transactions outstanding at period end in such markets, based on gross fair value, is provided within the following table. Other derivative contracts executed in over-the-counter or exchange-traded markets are settled through a central clearing organization and are excluded from this percentage. In addition to the netting amounts included in the table, we also have balance sheet netting related to resale and repurchase agreements that are disclosed within Note 10 (Guarantees, Pledged Assets and Collateral). Table 12.2: Gross Fair Values of Derivative Assets and Liabilities (in millions) Gross amounts recognized Gross amounts offset in consolidated balance sheet (1) Net amounts in consolidated balance sheet Gross amounts not offset in consolidated balance sheet (Disclosure-only netting) (2) Net amounts Percent exchanged in over-the-counter market (3) March 31, 2017 Derivative assets Interest rate contracts $ 63,487 (56,813 ) 6,674 (355 ) 6,319 31 % Commodity contracts 1,738 (734 ) 1,004 (6 ) 998 87 Equity contracts 6,256 (3,123 ) 3,133 (328 ) 2,805 71 Foreign exchange contracts 7,718 (6,142 ) 1,576 (22 ) 1,554 96 Credit contracts – protection sold 142 (54 ) 88 — 88 19 Credit contracts – protection purchased 381 (292 ) 89 (1 ) 88 99 Total derivative assets $ 79,722 (67,158 ) 12,564 (712 ) 11,852 Derivative liabilities Interest rate contracts $ 63,432 (58,885 ) 4,547 (2,038 ) 2,509 27 % Commodity contracts 1,348 (378 ) 970 (33 ) 937 83 Equity contracts 6,810 (2,939 ) 3,871 (451 ) 3,420 83 Foreign exchange contracts 9,628 (6,813 ) 2,815 (783 ) 2,032 99 Credit contracts – protection sold 300 (252 ) 48 (40 ) 8 96 Credit contracts – protection purchased 184 (10 ) 174 (33 ) 141 14 Other contracts 36 — 36 — 36 100 Total derivative liabilities $ 81,738 (69,277 ) 12,461 (3,378 ) 9,083 December 31, 2016 Derivative assets Interest rate contracts $ 65,268 (59,880 ) 5,388 (987 ) 4,401 34 % Commodity contracts 3,057 (707 ) 2,350 (30 ) 2,320 74 Equity contracts 5,358 (3,018 ) 2,340 (365 ) 1,975 75 Foreign exchange contracts 10,894 (6,663 ) 4,231 (362 ) 3,869 97 Credit contracts – protection sold 85 (48 ) 37 — 37 61 Credit contracts – protection purchased 467 (315 ) 152 (1 ) 151 98 Total derivative assets $ 85,129 (70,631 ) 14,498 (1,745 ) 12,753 Derivative liabilities Interest rate contracts $ 65,209 (58,956 ) 6,253 (3,129 ) 3,124 30 % Commodity contracts 2,551 (402 ) 2,149 (37 ) 2,112 38 Equity contracts 6,112 (2,433 ) 3,679 (331 ) 3,348 85 Foreign exchange contracts 12,742 (10,572 ) 2,170 (251 ) 1,919 100 Credit contracts – protection sold 389 (295 ) 94 (44 ) 50 98 Credit contracts – protection purchased 138 (38 ) 100 (2 ) 98 50 Other contracts 47 — 47 — 47 100 Total derivative liabilities $ 87,188 (72,696 ) 14,492 (3,794 ) 10,698 (1) Represents amounts with counterparties subject to enforceable master netting arrangements that have been offset in the consolidated balance sheet, including related cash collateral and portfolio level counterparty valuation adjustments. Counterparty valuation adjustments were $288 million and $348 million related to derivative assets and $99 million and $114 million related to derivative liabilities at March 31, 2017 , and December 31, 2016 , respectively. Cash collateral totaled $3.7 billion and $6.0 billion , netted against derivative assets and liabilities, respectively, at March 31, 2017 , and $4.8 billion and $7.1 billion , respectively, at December 31, 2016 . (2) Represents non-cash collateral pledged and received against derivative assets and liabilities with the same counterparty that are subject to enforceable master netting arrangements. U.S. GAAP does not permit netting of such non-cash collateral balances in the consolidated balance sheet but requires disclosure of these amounts. (3) Represents derivatives executed in over-the-counter markets that are not settled through a central clearing organization. Over-the-counter percentages are calculated based on gross amounts recognized as of the respective balance sheet date. The remaining percentage represents derivatives settled through a central clearing organization, which are executed in either over-the-counter or exchange-traded markets. Fair Value Hedges We use derivatives to hedge against changes in fair value of certain financial instruments, including available-for-sale debt securities, mortgages held for sale, and long-term debt. For more information on fair value hedges, see Note 1 (Summary of Significant Accounting Policies) and Note 16 (Derivatives) to Financial Statements in our 2016 Form 10-K. Table 12.3 shows the net gains (losses) recognized in the income statement related to derivatives in fair value hedging relationships. Table 12.3: Derivatives in Fair Value Hedging Relationships Interest rate contracts hedging: Foreign exchange contracts hedging: Total net gains (losses) on fair value hedges (in millions) Available- for-sale securities Mortgages held for sale Long-term debt Available- for-sale securities Long-term debt Quarter ended March 31, 2017 Net interest income (expense) recognized on derivatives (1) $ (131 ) (2 ) 427 4 (33 ) 265 Gains (losses) recorded in noninterest income Recognized on derivatives 126 (1 ) (564 ) (42 ) 157 (324 ) Recognized on hedged item (141 ) — 540 44 (311 ) 132 Net recognized on fair value hedges (ineffective portion) $ (15 ) (1 ) (24 ) 2 (154 ) (192 ) Quarter ended March 31, 2016 Net interest income (expense) recognized on derivatives (1) $ (181 ) (2 ) 482 — 16 315 Gains (losses) recorded in noninterest income Recognized on derivatives (1,683 ) (37 ) 3,103 (66 ) 1,618 2,935 Recognized on hedged item 1,691 33 (2,807 ) 59 (1,402 ) (2,426 ) Net recognized on fair value hedges (ineffective portion) $ 8 (4 ) 296 (7 ) 216 509 (1) Includes $(1) million and $(4) million , respectively, for the quarters ended March 31, 2017 and 2016 , of the time value component recognized as net interest income (expense) on forward derivatives hedging foreign currency that were excluded from the assessment of hedge effectiveness. Cash Flow Hedges We use derivatives to hedge certain financial instruments against future interest rate increases and to limit the variability of cash flows on certain financial instruments due to changes in the benchmark interest rate. For more information on cash flow hedges, see Note 1 (Summary of Significant Accounting Policies) and Note 16 (Derivatives) to Financial Statements in our 2016 Form 10-K. Based upon current interest rates, we estimate that $416 million (pre tax) of deferred net gains on derivatives in OCI at March 31, 2017 , will be reclassified into net interest income during the next twelve months. Future changes to interest rates may significantly change actual amounts reclassified to earnings. We are hedging our exposure to the variability of future cash flows for all forecasted transactions for a maximum of 6 years . Table 12.4 shows the net gains (losses) recognized related to derivatives in cash flow hedging relationships. Table 12.4: Derivatives in Cash Flow Hedging Relationships Quarter ended March 31, (in millions) 2017 2016 Gains (losses) (pre tax) recognized in OCI on derivatives (133 ) 1,999 Gains (pre tax) reclassified from cumulative OCI into net income (1) 202 256 Gains (losses) (pre tax) recognized in noninterest income for hedge ineffectiveness (2) (3 ) 1 (1) See Note 17 (Other Comprehensive Income) for detail on components of net income. (2) None of the change in value of the derivatives was excluded from the assessment of hedge effectiveness. Derivatives Not Designated as Hedging Instruments We use economic hedges primarily to hedge the risk of changes in the fair value of certain residential MHFS, residential MSRs measured at fair value, derivative loan commitments and other interests held. We also use economic hedge derivatives to mitigate the periodic earnings volatility caused by ineffectiveness recognized on our fair value accounting hedges. The resulting gain or loss on these economic hedge derivatives is reflected in mortgage banking noninterest income, net gains (losses) from equity investments and other noninterest income. The derivatives used to hedge MSRs measured at fair value, resulted in net derivative gains (losses) of $(72) million in first quarter 2017 and $1.5 billion in first quarter 2016 , which are included in mortgage banking noninterest income. The aggregate fair value of these derivatives was a net asset of $228 million at March 31, 2017 , and net liability of $617 million at December 31, 2016 . The change in fair value of these derivatives for each period end is due to changes in the underlying market indices and interest rates as well as the purchase and sale of derivative financial instruments throughout the period as part of our dynamic MSR risk management process. Interest rate lock commitments for mortgage loans that we intend to sell are considered derivatives. The aggregate fair value of derivative loan commitments on the balance sheet was a net asset of $113 million and net liability of $6 million at March 31, 2017 , and December 31, 2016 , respectively, and is included in the caption “Interest rate contracts” under “Customer accommodation trading and other derivatives” in Table 12.1 in this Note. For more information on economic hedges and other derivatives, see Note 16 (Derivatives) to Financial Statements in our 2016 Form 10-K. Table 12.5 shows the net gains recognized in the income statement related to derivatives not designated as hedging instruments. Table 12.5: Derivatives Not Designated as Hedging Instruments Quarter ended March 31, (in millions) 2017 2016 Net gains (losses) recognized on economic hedges derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (1) (9 ) 865 Other (2) 6 (135 ) Equity contracts (3) (481 ) 83 Foreign exchange contracts (2) (93 ) (166 ) Credit contracts (2) 4 — Subtotal (4) (573 ) 647 Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (5) 193 465 Other (6) 45 (450 ) Commodity contracts (6) 60 53 Equity contracts (6) (1,109 ) 20 Foreign exchange contracts (6) 185 222 Credit contracts (6) (15 ) (16 ) Other (2) 12 (21 ) Subtotal (629 ) 273 Net gains (losses) recognized related to derivatives not designated as hedging instruments (1,202 ) 920 (1) Reflected in mortgage banking noninterest income including gains (losses) on the derivatives used as economic hedges of MSRs measured at fair value, interest rate lock commitments and mortgages held for sale. (2) Included in other noninterest income. (3) Included in net gains (losses) from equity investments and other noninterest income. (4) Includes hedging gains (losses) of $2 million and $(131) million for first quarter 2017 , and 2016 , respectively, which partially offset hedge accounting ineffectiveness. (5) Reflected in mortgage banking noninterest income including gains (losses) on interest rate lock commitments and net gains from trading activities in noninterest income. (6) Included in net gains from trading activities in noninterest income. Credit Derivatives Credit derivative contracts are arrangements whose value is derived from the transfer of credit risk of a reference asset or entity from one party (the purchaser of credit protection) to another party (the seller of credit protection). We use credit derivatives to assist customers with their risk management objectives. We may also use credit derivatives in structured product transactions or liquidity agreements written to special purpose vehicles. The maximum exposure of sold credit derivatives is managed through posted collateral, purchased credit derivatives and similar products in order to achieve our desired credit risk profile. This credit risk management provides an ability to recover a significant portion of any amounts that would be paid under the sold credit derivatives. We would be required to perform under sold credit derivatives in the event of default by the referenced obligors. Events of default include events such as bankruptcy, capital restructuring or lack of principal and/or interest payment. In certain cases, other triggers may exist, such as the credit downgrade of the referenced obligors or the inability of the special purpose vehicle for which we have provided liquidity to obtain funding. Table 12.6 provides details of sold and purchased credit derivatives. Table 12.6: Sold and Purchased Credit Derivatives Notional amount (in millions) Fair value liability Protection sold (A) Protection sold – non- investment grade Protection purchased with identical underlyings (B) Net protection sold (A) - (B) Other protection purchased Range of maturities March 31, 2017 Credit default swaps on: Corporate bonds $ 15 3,306 1,645 2,577 729 1,024 2017 - 2026 Structured products 141 306 271 245 61 209 2020 - 2047 Credit protection on: Default swap index — 3,043 665 241 2,802 4,168 2017 - 2027 Commercial mortgage-backed securities index 126 499 — 461 38 66 2047 - 2058 Asset-backed securities index 17 44 — 40 4 5 2045 - 2046 Other 1 3,403 3,403 — 3,403 10,777 2017 - 2028 Total credit derivatives $ 300 10,601 5,984 3,564 7,037 16,249 December 31, 2016 Credit default swaps on: Corporate bonds $ 22 4,324 1,704 3,060 1,264 1,804 2017 - 2026 Structured products 193 405 333 295 110 79 2020 - 2047 Credit protection on: Default swap index — 1,515 257 139 1,376 3,668 2017 - 2021 Commercial mortgage-backed securities index 156 627 — 584 43 71 2047 - 2058 Asset-backed securities index 17 45 — 40 5 187 2045 - 2046 Other 1 3,567 3,568 — 3,567 10,519 2017 - 2047 Total credit derivatives $ 389 10,483 5,862 4,118 6,365 16,328 Protection sold represents the estimated maximum exposure to loss that would be incurred under an assumed hypothetical circumstance, where the value of our interests and any associated collateral declines to zero, without any consideration of recovery or offset from any economic hedges. We believe this hypothetical circumstance to be an extremely remote possibility and accordingly, this required disclosure is not an indication of expected loss. The amounts under non-investment grade represent the notional amounts of those credit derivatives on which we have a higher risk of being required to perform under the terms of the credit derivative and are a function of the underlying assets. We consider the risk of performance to be high if the underlying assets under the credit derivative have an external rating that is below investment grade or an internal credit default grade that is equivalent thereto. We believe the net protection sold, which is representative of the net notional amount of protection sold and purchased with identical underlyings, in combination with other protection purchased, is more representative of our exposure to loss than either non-investment grade or protection sold. Other protection purchased represents additional protection, which may offset the exposure to loss for protection sold, that was not purchased with an identical underlying of the protection sold. Credit-Risk Contingent Features Certain of our derivative contracts contain provisions whereby if the credit rating of our debt were to be downgraded by certain major credit rating agencies, the counterparty could demand additional collateral or require termination or replacement of derivative instruments in a net liability position. The aggregate fair value of all derivative instruments with such credit-risk-related contingent features that are in a net liability position was $11.3 billion at March 31, 2017 , and $12.8 billion at December 31, 2016 , for which we posted $8.3 billion and $8.9 billion , respectively, in collateral in the normal course of business. If the credit rating of our debt had been downgraded below investment grade, which is the credit-risk-related contingent feature that if triggered requires the maximum amount of collateral to be posted, on March 31, 2017 , or December 31, 2016 , we would have been required to post additional collateral of $3.0 billion or $4.0 billion , respectively, or potentially settle the contract in an amount equal to its fair value. Some contracts require that we provide more collateral than the fair value of derivatives that are in a net liability position if a downgrade occurs. Counterparty Credit Risk By using derivatives, we are exposed to counterparty credit risk if counterparties to the derivative contracts do not perform as expected. If a counterparty fails to perform, our counterparty credit risk is equal to the amount reported as a derivative asset on our balance sheet. The amounts reported as a derivative asset are derivative contracts in a gain position, and to the extent subject to legally enforceable master netting arrangements, net of derivatives in a loss position with the same counterparty and cash collateral received. We minimize counterparty credit risk through credit approvals, limits, monitoring procedures, executing master netting arrangements and obtaining collateral, where appropriate. To the extent the master netting arrangements and other criteria meet the applicable requirements, including determining the legal enforceability of the arrangement, it is our policy to present derivative balances and related cash collateral amounts net on the balance sheet. We incorporate credit valuation adjustments (CVA) to reflect counterparty credit risk in determining the fair value of our derivatives. Such adjustments, which consider the effects of enforceable master netting agreements and collateral arrangements, reflect market-based views of the credit quality of each counterparty. Our CVA calculation is determined based on observed credit spreads in the credit default swap market and indices indicative of the credit quality of the counterparties to our derivatives.

Fair Values of Assets and Liabi

Fair Values of Assets and Liabilities	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Values of Assets and Liabilities	Note 13: Fair Values of Assets and Liabilities We use fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Assets and liabilities recorded at fair value on a recurring basis are presented in Table 13.2 in this Note. From time to time, we may be required to record fair value adjustments on a nonrecurring basis. These nonrecurring fair value adjustments typically involve application of LOCOM accounting or write-downs of individual assets. Assets recorded on a nonrecurring basis are presented in Table 13.14 in this Note. See Note 1 (Summary of Significant Accounting Policies) to Financial Statements in our 2016 Form 10-K for discussion of how we determine fair value. For descriptions of the valuation methodologies we use for assets and liabilities recorded at fair value on a recurring or nonrecurring basis and for estimating fair value for financial instruments that are not recorded at fair value, see Note 17 (Fair Values of Assets and Liabilities) to Financial Statements in our 2016 Form 10-K. FAIR VALUE HIERARCHY We group our assets and liabilities measured at fair value in three levels based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are: • Level 1 – Valuation is based upon quoted prices for identical instruments traded in active markets. • Level 2 – Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. • Level 3 – Valuation is generated from techniques that use significant assumptions that are not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. In accordance with new accounting guidance that we adopted effective January 1, 2016, we do not classify an investment in the fair value hierarchy if we use the non-published net asset value (NAV) per share (or its equivalent) that has been communicated to us as an investor as a practical expedient to measure fair value. We generally use NAV per share as the fair value measurement for certain nonmarketable equity fund investments. This guidance was required to be applied retrospectively. Accordingly, certain prior period fair value disclosures have been revised to conform with current period presentation. Marketable equity investments with published NAVs continue to be classified in the fair value hierarchy. Fair Value Measurements from Vendors For certain assets and liabilities, we obtain fair value measurements from vendors, which predominantly consist of third-party pricing services, and record the unadjusted fair value in our financial statements. For additional information, see Note 17 (Fair Values of Assets and Liabilities) to Financial Statements in our 2016 Form 10-K. Table 13.1 . presents unadjusted fair value measurements provided by brokers or third-party pricing services by fair value hierarchy level. Fair value measurements obtained from brokers or third-party pricing services that we have adjusted to determine the fair value recorded in our financial statements are excluded from Table 13.1 . Table 13.1: Fair Value Measurements by Brokers or Third-Party Pricing Services Brokers Third-party pricing services (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 March 31, 2017 Trading assets $ — — — 648 55 — Available-for-sale securities: Securities of U.S. Treasury and federal agencies — — — 21,672 2,953 — Securities of U.S. states and political subdivisions — — — — 50,701 214 Mortgage-backed securities — 69 — — 170,540 89 Other debt securities (1) — 777 861 — 46,797 250 Total debt securities — 846 861 21,672 270,991 553 Total marketable equity securities — — — — 293 — Total available-for-sale securities — 846 861 21,672 271,284 553 Derivatives assets — — — 25 7 — Derivatives liabilities — — — (21 ) (2 ) — Other liabilities (2) — — — — — — December 31, 2016 Trading assets $ — — — 899 60 — Available-for-sale securities: Securities of U.S. Treasury and federal agencies — — — 22,870 2,949 — Securities of U.S. states and political subdivisions — — — — 49,837 208 Mortgage-backed securities — 171 — — 176,923 92 Other debt securities (1) — 450 968 — 49,162 54 Total debt securities — 621 968 22,870 278,871 354 Total marketable equity securities — — — — 358 — Total available-for-sale securities — 621 968 22,870 279,229 354 Derivatives assets — — — 22 — — Derivatives liabilities — — — (109 ) (1 ) — Other liabilities (2) — — — — — — (1) Includes corporate debt securities, collateralized loan and other debt obligations, asset-backed securities, and other debt securities. (2) Includes short sale liabilities and other liabilities. Assets and Liabilities Recorded at Fair Value on a Recurring Basis Table 13.2 presents the balances of assets and liabilities recorded at fair value on a recurring basis. Table 13.2: Fair Value on a Recurring Basis (in millions) Level 1 Level 2 Level 3 Netting Total March 31, 2017 Trading assets Securities of U.S. Treasury and federal agencies $ 12,369 3,436 — — 15,805 Securities of U.S. states and political subdivisions — 3,330 3 — 3,333 Collateralized loan obligations — 426 398 — 824 Corporate debt securities — 9,252 37 — 9,289 Mortgage-backed securities — 20,466 — — 20,466 Asset-backed securities — 794 — — 794 Equity securities 28,414 246 — — 28,660 Total trading securities (1) 40,783 37,950 438 — 79,171 Other trading assets — 1,129 26 — 1,155 Total trading assets 40,783 39,079 464 — 80,326 Securities of U.S. Treasury and federal agencies 21,672 2,953 — — 24,625 Securities of U.S. states and political subdivisions — 50,701 1,360 (2) — 52,061 Mortgage-backed securities: Federal agencies — 156,966 — — 156,966 Residential — 7,592 1 — 7,593 Commercial — 6,551 89 — 6,640 Total mortgage-backed securities — 171,109 90 — 171,199 Corporate debt securities 60 9,979 391 — 10,430 Collateralized loan and other debt obligations (3) — 33,045 964 (2) — 34,009 Asset-backed securities: Automobile loans and leases — 11 — — 11 Home equity loans — 319 — — 319 Other asset-backed securities — 4,905 845 (2) — 5,750 Total asset-backed securities — 5,235 845 — 6,080 Other debt securities — 1 — — 1 Total debt securities 21,732 273,023 3,650 — 298,405 Marketable equity securities: Perpetual preferred securities 190 292 — — 482 Other marketable equity securities 642 1 — — 643 Total marketable equity securities 832 293 — — 1,125 Total available-for-sale securities 22,564 273,316 3,650 — 299,530 Mortgages held for sale — 13,061 957 — 14,018 Loans — — 505 — 505 Mortgage servicing rights (residential) — — 13,208 — 13,208 Derivative assets: Interest rate contracts 28 63,205 254 — 63,487 Commodity contracts — 1,701 37 — 1,738 Equity contracts 1,808 3,215 1,233 — 6,256 Foreign exchange contracts 25 7,679 14 — 7,718 Credit contracts — 294 229 — 523 Netting — — — (67,158 ) (4) (67,158 ) Total derivative assets 1,861 76,094 1,767 (67,158 ) 12,564 Other assets – excluding nonmarketable equity investments at NAV — 40 3,740 — 3,780 Total assets included in the fair value hierarchy $ 65,208 401,590 24,291 (67,158 ) 423,931 Other assets – nonmarketable equity investments at NAV (5) — Total assets recorded at fair value $ 423,931 Derivative liabilities: Interest rate contracts $ (19 ) (63,377 ) (36 ) — (63,432 ) Commodity contracts — (1,330 ) (18 ) — (1,348 ) Equity contracts (1,164 ) (4,114 ) (1,532 ) — (6,810 ) Foreign exchange contracts (21 ) (9,596 ) (11 ) — (9,628 ) Credit contracts — (342 ) (142 ) — (484 ) Other derivative contracts — — (36 ) — (36 ) Netting — — — 69,277 (4) 69,277 Total derivative liabilities (1,204 ) (78,759 ) (1,775 ) 69,277 (12,461 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (12,164 ) (809 ) — — (12,973 ) Corporate debt securities — (4,712 ) — — (4,712 ) Equity securities (2,246 ) — — — (2,246 ) Other securities — (51 ) — — (51 ) Total short sale liabilities (14,410 ) (5,572 ) — — (19,982 ) Other liabilities — — (4 ) — (4 ) Total liabilities recorded at fair value $ (15,614 ) (84,331 ) (1,779 ) 69,277 (32,447 ) (1) Net gains (losses) from trading activities recognized in the income statement for the quarters ended March 31, 2017 and 2016 include $587 million and $572 million in net unrealized gains (losses) on trading securities held at March 31, 2017 and 2016 , respectively. (2) Balances consist of securities that are mostly investment grade based on ratings received from the ratings agencies or internal credit grades categorized as investment grade if external ratings are not available. The securities are classified as Level 3 due to limited market activity. (3) Includes collateralized debt obligations of $945 million . (4) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 12 (Derivatives) for additional information. (5) Consists of certain nonmarketable equity investments that are measured at fair value using NAV per share (or its equivalent) as a practical expedient and are excluded from the fair value hierarchy. (continued on following page) (continued from previous page) (in millions) Level 1 Level 2 Level 3 Netting Total December 31, 2016 Trading assets Securities of U.S. Treasury and federal agencies $ 14,950 2,710 — — 17,660 Securities of U.S. states and political subdivisions — 2,910 3 — 2,913 Collateralized loan obligations — 501 309 — 810 Corporate debt securities — 9,481 34 — 9,515 Mortgage-backed securities — 20,254 — — 20,254 Asset-backed securities — 1,128 — — 1,128 Equity securities 20,462 290 — — 20,752 Total trading securities (1) 35,412 37,274 346 — 73,032 Other trading assets — 1,337 28 — 1,365 Total trading assets 35,412 38,611 374 — 74,397 Securities of U.S. Treasury and federal agencies 22,870 2,949 — — 25,819 Securities of U.S. states and political subdivisions — 49,961 1,140 (2) — 51,101 Mortgage-backed securities: Federal agencies — 161,230 — — 161,230 Residential — 7,815 1 — 7,816 Commercial — 8,411 91 — 8,502 Total mortgage-backed securities — 177,456 92 — 177,548 Corporate debt securities 58 10,967 432 — 11,457 Collateralized loan and other debt obligations (3) — 34,141 879 (2) — 35,020 Asset-backed securities: Automobile loans and leases — 9 — — 9 Home equity loans — 327 — — 327 Other asset-backed securities — 4,909 962 (2) — 5,871 Total asset-backed securities — 5,245 962 — 6,207 Other debt securities — 1 — — 1 Total debt securities 22,928 280,720 3,505 — 307,153 Marketable equity securities: Perpetual preferred securities 112 357 — — 469 Other marketable equity securities 741 1 — — 742 Total marketable equity securities 853 358 — — 1,211 Total available-for-sale securities 23,781 281,078 3,505 — 308,364 Mortgages held for sale — 21,057 985 — 22,042 Loans — — 758 — 758 Mortgage servicing rights (residential) — — 12,959 — 12,959 Derivative assets: Interest rate contracts 44 64,986 238 — 65,268 Commodity contracts — 3,020 37 — 3,057 Equity contracts 1,314 2,997 1,047 — 5,358 Foreign exchange contracts 22 10,843 29 — 10,894 Credit contracts — 280 272 — 552 Netting — — — (70,631 ) (4) (70,631 ) Total derivative assets 1,380 82,126 1,623 (70,631 ) 14,498 Other assets – excluding nonmarketable equity investments at NAV — 16 3,259 — 3,275 Total assets included in the fair value hierarchy $ 60,573 422,888 23,463 (70,631 ) 436,293 Other assets – nonmarketable equity investments at NAV (5) — Total assets recorded at fair value $ 436,293 Derivative liabilities: Interest rate contracts $ (45 ) (65,047 ) (117 ) — (65,209 ) Commodity contracts — (2,537 ) (14 ) — (2,551 ) Equity contracts (919 ) (3,879 ) (1,314 ) — (6,112 ) Foreign exchange contracts (109 ) (12,616 ) (17 ) — (12,742 ) Credit contracts — (332 ) (195 ) — (527 ) Other derivative contracts — — (47 ) — (47 ) Netting — — — 72,696 (4) 72,696 Total derivative liabilities (1,073 ) (84,411 ) (1,704 ) 72,696 (14,492 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (9,722 ) (701 ) — — (10,423 ) Corporate debt securities — (4,063 ) — — (4,063 ) Equity securities (1,795 ) — — — (1,795 ) Other securities — (98 ) — — (98 ) Total short sale liabilities (11,517 ) (4,862 ) — — (16,379 ) Other liabilities — — (4 ) — (4 ) Total liabilities recorded at fair value $ (12,590 ) (89,273 ) (1,708 ) 72,696 (30,875 ) (1) Net gains (losses) from trading activities recognized in the income statement for the year ended December 31, 2016 , include $820 million in net unrealized gains (losses) on trading securities held at December 31, 2016 . (2) Balances consist of securities that are mostly investment grade based on ratings received from the ratings agencies or internal credit grades categorized as investment grade if external ratings are not available. The securities are classified as Level 3 due to limited market activity. (3) Includes collateralized debt obligations of $847 million . (4) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 12 (Derivatives) for additional information. (5) Consists of certain nonmarketable equity investments that are measured at fair value using NAV per share (or its equivalent) as a practical expedient and are excluded from the fair value hierarchy. Changes in Fair Value Levels We monitor the availability of observable market data to assess the appropriate classification of financial instruments within the fair value hierarchy and transfer between Level 1, Level 2, and Level 3 accordingly. Observable market data includes but is not limited to quoted prices and market transactions. Changes in economic conditions or market liquidity generally will drive changes in availability of observable market data. Changes in availability of observable market data, which also may result in changing the valuation technique used, are generally the cause of transfers between Level 1, Level 2, and Level 3. Transfers into and out of Level 1, Level 2, and Level 3 are provided within Table 13.3 for the periods presented. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred. Table 13.3: Transfers Between Fair Value Levels Transfers Between Fair Value Levels Level 1 Level 2 Level 3 (1) (in millions) In Out In Out In Out Total Quarter ended March 31, 2017 Trading assets $ — — 1 (3 ) 3 (1 ) — Available-for-sale securities — — 72 (5 ) 5 (72 ) — Mortgages held for sale — — 1 (42 ) 42 (1 ) — Net derivative assets and liabilities (2) — — 3 22 (22 ) (3 ) — Short sale liabilities — — — — — — — Total transfers $ — — 77 (28 ) 28 (77 ) — Quarter ended March 31, 2016 Trading assets $ 4 — 11 (4 ) — (11 ) — Available-for-sale securities — — — (80 ) 80 — — Mortgages held for sale — — 2 (29 ) 29 (2 ) — Net derivative assets and liabilities (2) — — 62 (25 ) 25 (62 ) — Short sale liabilities (1 ) — — 1 — — — Total transfers $ 3 — 75 (137 ) 134 (75 ) — (1) All transfers in and out of Level 3 are disclosed within the recurring Level 3 rollforward tables in this Note. (2) Includes transfers of net derivative assets and net derivative liabilities between levels due to changes in observable market data. The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2017 , are presented in Table 13.4 . Table 13.4: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Quarter ended March 31, 2017 Total net gains (losses) included in Purchases, sales, issuances and settlements, net (1) Net unrealized gains (losses) included in income related to assets and liabilities held at period end (in millions) Balance, beginning of period Net income Other compre- hensive income Transfers into Level 3 Transfers out of Level 3 Balance, end of period (2) Quarter ended March 31, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 3 — — — — — 3 — Collateralized loan obligations 309 4 — 85 — — 398 — Corporate debt securities 34 — — 1 3 (1 ) 37 — Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 346 4 — 86 3 (1 ) 438 — Other trading assets 28 (2 ) — — — — 26 (1 ) Total trading assets 374 2 — 86 3 (1 ) 464 (1 ) (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,140 — 2 285 5 (72 ) 1,360 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 91 (3 ) 4 (3 ) — — 89 (4 ) Total mortgage-backed securities 92 (3 ) 4 (3 ) — — 90 (4 ) Corporate debt securities 432 (14 ) 8 (35 ) — — 391 — Collateralized loan and other debt obligations 879 5 41 39 — — 964 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 962 — 2 (119 ) — — 845 — Total asset-backed securities 962 — 2 (119 ) — — 845 — Total debt securities 3,505 (12 ) 57 167 5 (72 ) 3,650 (4 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,505 (12 ) 57 167 5 (72 ) 3,650 (4 ) Mortgages held for sale 985 (9 ) — (60 ) 42 (1 ) 957 (11 ) (6) Loans 758 (6 ) — (247 ) — — 505 (5 ) (6) Mortgage servicing rights (residential) (7) 12,959 (287 ) — 536 — — 13,208 174 (6) Net derivative assets and liabilities: Interest rate contracts 121 209 — (112 ) — — 218 85 Commodity contracts 23 2 — (6 ) — — 19 7 Equity contracts (267 ) (44 ) — 37 (22 ) (3 ) (299 ) (57 ) Foreign exchange contracts 12 (9 ) — — — — 3 (5 ) Credit contracts 77 7 — 3 — — 87 (14 ) Other derivative contracts (47 ) 11 — — — — (36 ) 11 Total derivative contracts (81 ) 176 — (78 ) (22 ) (3 ) (8 ) 27 (8) Other assets 3,259 481 — — — — 3,740 485 (5) Short sale liabilities — — — — — — — — (3) Other liabilities (4 ) — — — — — (4 ) — (6) (1) See Table 13.5 for detail. (2) Represents only net gains (losses) that are due to changes in economic conditions and management’s estimates of fair value and excludes changes due to the collection/realization of cash flows over time. (3) Included in net gains (losses) from trading activities and other noninterest income in the income statement. (4) Included in net gains (losses) from debt securities in the income statement. (5) Included in net gains (losses) from equity investments in the income statement. (6) Included in mortgage banking and other noninterest income in the income statement. (7) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities). (8) Included in mortgage banking, trading activities, equity investments and other noninterest income in the income statement. (continued on following page) (continued from previous page) Table 13.5 presents gross purchases, sales, issuances and settlements related to the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2017 . Table 13.5: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2017 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 1 (1 ) — — — Collateralized loan obligations 199 (76 ) — (38 ) 85 Corporate debt securities 6 (5 ) — — 1 Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 206 (82 ) — (38 ) 86 Other trading assets — — — — — Total trading assets 206 (82 ) — (38 ) 86 Available-for-sale securities: Securities of U.S. states and political subdivisions — — 346 (61 ) 285 Mortgage-backed securities: Residential — — — — — Commercial — — — (3 ) (3 ) Total mortgage-backed securities — — — (3 ) (3 ) Corporate debt securities 4 — — (39 ) (35 ) Collateralized loan and other debt obligations 72 — — (33 ) 39 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — — 21 (140 ) (119 ) Total asset-backed securities — — 21 (140 ) (119 ) Total debt securities 76 — 367 (276 ) 167 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 76 — 367 (276 ) 167 Mortgages held for sale 22 (156 ) 106 (32 ) (60 ) Loans 1 (129 ) 6 (125 ) (247 ) Mortgage servicing rights (residential) (1) — (47 ) 583 — 536 Net derivative assets and liabilities: Interest rate contracts — — — (112 ) (112 ) Commodity contracts — — — (6 ) (6 ) Equity contracts — — — 37 37 Foreign exchange contracts — — — — — Credit contracts 2 (1 ) — 2 3 Other derivative contracts — — — — — Total derivative contracts 2 (1 ) — (79 ) (78 ) Other assets — — — — — Short sale liabilities — — — — — Other liabilities — — — — — (1) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities). The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2016 , are presented in Table 13.6 . Table 13.6: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Quarter ended March 31, 2016 Balance, beginning of period Total net gains (losses) included in Purchases, sales, issuances and settlements, net (1) Net unrealized gains (losses) included in income related to assets and liabilities held at period end (in millions) Net income Other compre- hensive income Transfers into Level 3 Transfers out of Level 3 Balance, end of period (2) Quarter ended March 31, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 8 — — — — — 8 — Collateralized loan obligations 343 (25 ) — (39 ) — (11 ) 268 (23 ) Corporate debt securities 56 (5 ) — (18 ) — — 33 (4 ) Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 407 (30 ) — (57 ) — (11 ) 309 (27 ) Other trading assets 34 (2 ) — — — — 32 — Total trading assets 441 (32 ) — (57 ) — (11 ) 341 (27 ) (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,500 1 3 (127 ) 80 — 1,457 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 73 — — — — — 73 — Total mortgage-backed securities 74 — — — — — 74 — Corporate debt securities 405 2 19 27 — — 453 — Collateralized loan and other debt obligations 565 15 (24 ) 257 — — 813 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 1,182 — — 58 — — 1,240 — Total asset-backed securities 1,182 — — 58 — — 1,240 — Total debt securities 3,726 18 (2 ) 215 80 — 4,037 — (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,726 18 (2 ) 215 80 — 4,037 — Mortgages held for sale 1,082 24 — (62 ) 29 (2 ) 1,071 21 (6) Loans 5,316 (1 ) — (94 ) — — 5,221 (2 ) (6) Mortgage servicing rights (residential) (7) 12,415 (1,448 ) — 366 — — 11,333 (957 ) (6) Net derivative assets and liabilities: Interest rate contracts 288 599 — (379 ) — (7 ) 501 270 Commodity contracts 12 2 — (3 ) — — 11 3 Equity contracts (111 ) (2 ) — (140 ) 25 (55 ) (283 ) (147 ) Foreign exchange contracts — — — — — — — — Credit contracts (3 ) 9 — (6 ) — — — (1 ) Other derivative contracts (58 ) (21 ) — 2 — — (77 ) (21 ) Total derivative contracts 128 587 — (526 ) 25 (62 ) 152 104 (8) Other assets 3,065 (57 ) — 89 — — 3,097 (58 ) (5) Short sale liabilities — — — — — — — — (3) Other liabilities (30 ) — — 25 — — (5 ) — (6) (1) See Table 13.7 for detail. (2) Represents only net gains (losses) that are due to changes in economic conditions and management’s estimates of fair value and excludes changes due to the collection/realization of cash flows over time. (3) Included in net gains (losses) from trading activities and other noninterest income in the income statement. (4) Included in net gains (losses) from debt securities in the income statement. (5) Included in net gains (losses) from equity investments in the income statement. (6) Included in mortgage banking and other noninterest income in the income statement. (7) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities). (8) Included in mortgage banking, trading activities, equity investments and other noninterest income in the income statement. (continued on following page) (continued from previous page) Table 13.7 presents gross purchases, sales, issuances and settlements related to the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2016 . Table 13.7: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2016 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2016 Trading assets: Securities of U.S. states and political subdivisions $ — — — — — Collateralized loan obligations 56 (95 ) — — (39 ) Corporate debt securities 3 (21 ) — — (18 ) Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 59 (116 ) — — (57 ) Other trading assets — — — — — Total trading assets 59 (116 ) — — (57 ) Available-for-sale securities: Securities of U.S. states and political subdivisions 28 — 16 (171 ) (127 ) Mortgage-backed securities: Residential — — — — — Commercial — — — — — Total mortgage-backed securities — — — — — Corporate debt securities 28 — — (1 ) 27 Collateralized loan and other debt obligations 301 — — (44 ) 257 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — — 160 (102 ) 58 Total asset-backed securities — — 160 (102 ) 58 Total debt securities 357 — 176 (318 ) 215 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 357 — 176 (318 ) 215 Mortgages held for sale 22 (159 ) 118 (43 ) (62 ) Loans 4 — 88 (186 ) (94 ) Mortgage servicing rights (residential) (1) — — 366 — 366 Net derivative assets and liabilities: Interest rate contracts — — — (379 ) (379 ) Commodity contracts — — — (3 ) (3 ) Equity contracts 13 (147 ) — (6 ) (140 ) Foreign exchange contracts — — — — — Credit contracts 3 — — (9 ) (6 ) Other derivative contracts — — — 2 2 Total derivative contracts 16 (147 ) — (395 ) (526 ) Other assets 89 — — — 89 Short sale liabilities — — — — — Other liabilities — — — 25 25 (1) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities). Table 13.8 and Table 13.9 provide quantitative information about the valuation techniques and significant unobservable inputs used in the valuation of substantially all of our Level 3 assets and liabilities measured at fair value on a recurring basis for which we use an internal model. The significant unobservable inputs for Level 3 assets and liabilities that are valued using fair values obtained from third party vendors are not included in the table, as the specific inputs applied are not provided by the vendor. In addition, the table excludes the valuation techniques and significant unobservable inputs for certain classes of Level 3 assets and liabilities measured using an internal model that we consider, both individually and in the aggregate, insignificant relative to our overall Level 3 assets and liabilities. We made this determination based upon an evaluation of each class, which considered the magnitude of the positions, nature of the unobservable inputs and potential for significant changes in fair value due to changes in those inputs. For information on how changes in significant unobservable inputs affect the fair values of Level 3 assets and liabilities, see Note 17 (Fair Values of Assets and Liabilities) to Financial Statements in our 2016 Form 10-K. Table 13.8: Valuation Techniques – Recurring Basis – March 31, 2017 ($ in millions, except cost to service amounts) Fair Value Level 3 Valuation Technique(s) Significant Unobservable Input Range of Inputs Weighted Average (1) March 31, 2017 Trading and available-for-sale securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 1,120 Discounted cash flow Discount rate 1.2 - 5.0 % 2.0 Auction rate securities and other municipal bonds 29 Discounted cash flow Discount rate 4.1 - 4.6 4.3 214 Vendor priced Collateralized loan and other debt obligations (2) 398 Market comparable pricing Comparability adjustment (19.8 ) - 20.3 1.6 964 Vendor priced Asset-backed securities: Diversified payment rights (3) 401 Discounted cash flow Discount rate 1.7 - 4.3 3.1 Other commercial and consumer 417 (4) Discounted cash flow Discount rate 3.3 - 4.7 4.2 Weighted average life 0.6 - 4.0 yrs 2.8 27 Vendor priced Mortgages held for sale (residential) 928 Discounted cash flow Default rate 0.5 - 8.1 % 1.8 Discount rate 2.1 - 7.0 5.3 Loss severity 0.1 - 45.9 28.1 Prepayment rate 6.2 - 17.2 10.0 29 Market comparable pricing Comparability adjustment (53.3 ) - 0.0 (36.3 ) Loans 505 (5) Discounted cash flow Discount rate 0.0 - 7.2 0.2 Prepayment rate 9.4 - 100.0 95.0 Mortgage servicing rights (residential) 13,208 Discounted cash flow Cost to service per loan (6) $ 79 - 562 150 Discount rate 6.6 - 18.8 % 6.9 Prepayment rate (7) 9.2 - 21.2 10.2 Net derivative assets and (liabilities): Interest rate contracts 105 Discounted cash flow Default rate 0.0 - 6.8 1.7 Loss severity 50.0 - 50.0 50.0 Prepayment rate 2.8 - 12.5 9.6 Interest rate contracts: derivative loan commitments 113 Discounted cash flow Fall-out factor 1.0 - 99.0 21.0 Initial-value servicing (23.8 ) - 131.2 bps 61.0 Equity contracts 94 Discounted cash flow Conversion factor (10.3 ) - 0.0 % (7.9 ) Weighted average life 0.8 - 2.8 yrs 1.7 (393 ) Option model Correlation factor (77.0 ) - 98.5 % 37.6 Volatility factor 5.0 - 100.0 19.7 Credit contracts 0 (8) Market comparable pricing Comparability adjustment (23.8 ) - 29.1 1.0 87 Option model Credit spread 0.0 - 9.4 1.1 Loss severity 12.0 - 60.0 48.4 Other assets: nonmarketable equity investments 17 Discounted cash flow Discount rate 5.0 - 10.3 9.0 Volatility Factor 0.4 2.8 1.4 3,723 Market comparable pricing Comparability adjustment (21.0 ) - (4.8 ) (15.6 ) Insignificant Level 3 assets, net of liabilities 526 (9) Total level 3 assets, net of liabilities $ 22,512 (10) (1) Weighted averages are calculated using outstanding unpaid principal balance for cash instruments, such as loans and securities, and notional amounts for derivative instruments. (2) Includes $945 million of collateralized debt obligations. (3) Securities backed by specified sources of current and future receivables generated from foreign originators. (4) A significant portion of the balance consists of investments in asset-backed securities that are revolving in nature, for which the timing of advances and repayments of principal are uncertain. (5) Consists of reverse mortgage loans. (6) The high end of the range of inputs is for servicing modified loans. For non-modified loans the range is $79 - $280 . (7) Includes a blend of prepayment speeds and expected defaults. Prepayment speeds are influenced by mortgage interest rates as well as our estimation of drivers of borrower behavior. (8) Consists of $15 million of derivative assets and $15 million derivative liabilities. (9) Represents the aggregate amount of Level 3 assets and liabilities measured at fair value on a recurring basis that are individually and in the aggregate insignificant. The amount includes corporate debt securities, mortgage-backed securities, other trading assets, other liabilities and certain net derivative assets and liabilities, such as commodity contracts, foreign exchange contracts, and other derivative contracts. (10) Consists of total Level 3 assets of $24.3 billion and total Level 3 liabilities of $1.8 billion , before netting of derivative balances. Table 13.9: Valuation Techniques – Recurring Basis – December 31, 2016 ($ in millions, except cost to service amounts) Fair Value Level 3 Valuation Technique(s) Significant Unobser

Preferred Stock

Preferred Stock	3 Months Ended
	Mar. 31, 2017
Preferred Stock [Abstract]
Preferred Stock	Note 14: Preferred Stock We are authorized to issue 20 million shares of preferred stock and 4 million shares of preference stock, both without par value. Preferred shares outstanding rank senior to common shares both as to dividends and liquidation preference but have no general voting rights. We have not issued any preference shares under this authorization. If issued, preference shares would be limited to one vote per share. Our total authorized, issued and outstanding preferred stock is presented in the following two tables along with the Employee Stock Ownership Plan (ESOP) Cumulative Convertible Preferred Stock. Table 14.1: Preferred Stock Shares March 31, 2017 December 31, 2016 Liquidation preference per share Shares authorized and designated Liquidation preference per share Shares authorized and designated DEP Shares Dividend Equalization Preferred Shares (DEP) $ 10 97,000 $ 10 97,000 Series H Floating Class A Preferred Stock (1) — — 20,000 50,000 Series I Floating Class A Preferred Stock 100,000 25,010 100,000 25,010 Series J 8.00% Non-Cumulative Perpetual Class A Preferred Stock 1,000 2,300,000 1,000 2,300,000 Series K 7.98% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 1,000 3,500,000 1,000 3,500,000 Series L 7.50% Non-Cumulative Perpetual Convertible Class A Preferred Stock 1,000 4,025,000 1,000 4,025,000 Series N 5.20% Non-Cumulative Perpetual Class A Preferred Stock 25,000 30,000 25,000 30,000 Series O 5.125% Non-Cumulative Perpetual Class A Preferred Stock 25,000 27,600 25,000 27,600 Series P 5.25% Non-Cumulative Perpetual Class A Preferred Stock 25,000 26,400 25,000 26,400 Series Q 5.85% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 69,000 25,000 69,000 Series R 6.625% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 34,500 25,000 34,500 Series S 5.90% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 80,000 25,000 80,000 Series T 6.00% Non-Cumulative Perpetual Class A Preferred Stock 25,000 32,200 25,000 32,200 Series U 5.875% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 80,000 25,000 80,000 Series V 6.00% Non-Cumulative Perpetual Class A Preferred Stock 25,000 40,000 25,000 40,000 Series W 5.70% Non-Cumulative Perpetual Class A Preferred Stock 25,000 40,000 25,000 40,000 Series X 5.50% Non-Cumulative Perpetual Class A Preferred Stock 25,000 46,000 25,000 46,000 ESOP Cumulative Convertible Preferred Stock (2) — 2,389,181 — 1,439,181 Total 12,841,891 11,941,891 (1) On January 26, 2017, we filed with the Delaware Secretary of State a Certificate Eliminating the Certificate of Designations with respect to the Series H preferred stock. (2) See the ESOP Cumulative Convertible Preferred Stock section in this Note for additional information about the liquidation preference for the ESOP Cumulative Convertible Preferred Stock. Table 14.2: Preferred Stock – Shares Issued and Carrying Value March 31, 2017 December 31, 2016 (in millions, except shares) Shares issued and outstanding Liquidation preference value Carrying value Discount Shares issued and outstanding Liquidation preference value Carrying value Discount DEP Shares Dividend Equalization Preferred Shares (DEP) 96,546 $ — — — 96,546 $ — — — Series I (1) Floating Class A Preferred Stock 25,010 2,501 2,501 — 25,010 2,501 2,501 — Series J (1) 8.00% Non-Cumulative Perpetual Class A Preferred Stock 2,150,375 2,150 1,995 155 2,150,375 2,150 1,995 155 Series K (1) 7.98% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 3,352,000 3,352 2,876 476 3,352,000 3,352 2,876 476 Series L (1) 7.50% Non-Cumulative Perpetual Convertible Class A Preferred Stock 3,968,000 3,968 3,200 768 3,968,000 3,968 3,200 768 Series N (1) 5.20% Non-Cumulative Perpetual Class A Preferred Stock 30,000 750 750 — 30,000 750 750 — Series O (1) 5.125% Non-Cumulative Perpetual Class A Preferred Stock 26,000 650 650 — 26,000 650 650 — Series P (1) 5.25% Non-Cumulative Perpetual Class A Preferred Stock 25,000 625 625 — 25,000 625 625 — Series Q (1) 5.85% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 69,000 1,725 1,725 — 69,000 1,725 1,725 — Series R (1) 6.625% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 33,600 840 840 — 33,600 840 840 — Series S (1) 5.90% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 80,000 2,000 2,000 — 80,000 2,000 2,000 — Series T (1) 6.00% Non-Cumulative Perpetual Class A Preferred Stock 32,000 800 800 — 32,000 800 800 — Series U (1) 5.875% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 80,000 2,000 2,000 — 80,000 2,000 2,000 — Series V (1) 6.00% Non-Cumulative Perpetual Class A Preferred Stock 40,000 1,000 1,000 — 40,000 1,000 1,000 — Series W (1) 5.70% Non-Cumulative Perpetual Class A Preferred Stock 40,000 1,000 1,000 — 40,000 1,000 1,000 — Series X (1) 5.50% Non-Cumulative Perpetual Class A Preferred Stock 46,000 1,150 1,150 — 46,000 1,150 1,150 — ESOP Cumulative Convertible Preferred Stock 2,389,181 2,389 2,389 — 1,439,181 1,439 1,439 — Total 12,482,712 $ 26,900 25,501 1,399 11,532,712 $ 25,950 24,551 1,399 (1) Preferred shares qualify as Tier 1 capital. See Note 7 (Securitizations and Variable Interest Entities) for additional information on our trust preferred securities. ESOP CUMULATIVE CONVERTIBLE PREFERRED STOCK All shares of our ESOP Cumulative Convertible Preferred Stock (ESOP Preferred Stock) were issued to a trustee acting on behalf of the Wells Fargo & Company 401(k) Plan (the 401(k) Plan). Dividends on the ESOP Preferred Stock are cumulative from the date of initial issuance and are payable quarterly at annual rates based upon the year of issuance. Each share of ESOP Preferred Stock released from the unallocated reserve of the 401(k) Plan is converted into shares of our common stock based on the stated value of the ESOP Preferred Stock and the then current market price of our common stock. The ESOP Preferred Stock is also convertible at the option of the holder at any time, unless previously redeemed. We have the option to redeem the ESOP Preferred Stock at any time, in whole or in part, at a redemption price per share equal to the higher of (a) $1,000 per share plus accrued and unpaid dividends or (b) the fair market value, as defined in the Certificates of Designation for the ESOP Preferred Stock. Table 14.3: ESOP Preferred Stock Shares issued and outstanding Carrying value Adjustable dividend rate (in millions, except shares) Mar 31, Dec 31, Mar 31, Dec 31, Minimum Maximum ESOP Preferred Stock $1,000 liquidation preference per share 2017 950,000 — $ 950 — 7.00 % 8.00 2016 358,528 358,528 358 358 9.30 10.30 2015 200,820 200,820 201 201 8.90 9.90 2014 255,413 255,413 255 255 8.70 9.70 2013 222,558 222,558 223 223 8.50 9.50 2012 144,072 144,072 144 144 10.00 11.00 2011 149,301 149,301 149 149 9.00 10.00 2010 90,775 90,775 91 91 9.50 10.50 2008 17,714 17,714 18 18 10.50 11.50 Total ESOP Preferred Stock (1) 2,389,181 1,439,181 $ 2,389 1,439 Unearned ESOP shares (2) $ (2,546 ) (1,565 ) (1) At March 31, 2017 and December 31, 2016 , additional paid-in capital included $157 million and $126 million , respectively, related to ESOP preferred stock. (2) We recorded a corresponding charge to unearned ESOP shares in connection with the issuance of the ESOP Preferred Stock. The unearned ESOP shares are reduced as shares of the ESOP Preferred Stock are committed to be released.

Employee Benefits

Employee Benefits	3 Months Ended
	Mar. 31, 2017
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Employee Benefits	Note 15: Employee Benefits We sponsor a frozen noncontributory qualified defined benefit retirement plan called the Wells Fargo & Company Cash Balance Plan (Cash Balance Plan), which covers eligible employees of Wells Fargo. The Cash Balance Plan was frozen on July 1, 2009, and no new benefits accrue after that date. Table 15.1 presents the components of net periodic benefit cost. Table 15.1: Net Periodic Benefit Cost 2017 2016 Pension benefits Pension benefits (in millions) Qualified Non-qualified Other benefits Qualified Non-qualified Other benefits Quarter ended March 31, Service cost $ 1 — — 1 — — Interest cost 103 6 7 109 7 10 Expected return on plan assets (163 ) — (7 ) (142 ) — (8 ) Amortization of net actuarial loss (gain) 38 2 (2 ) 33 3 (1 ) Amortization of prior service credit — — (3 ) — — — Settlement loss 1 2 — — 2 — Net periodic benefit cost (income) $ (20 ) 10 (5 ) 1 12 1

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	Note 16: Earnings Per Common Share Table 16.1 shows earnings per common share and diluted earnings per common share and reconciles the numerator and denominator of both earnings per common share calculations. Table 16.1: Earnings Per Common Share Calculations Quarter ended March 31, (in millions, except per share amounts) 2017 2016 Wells Fargo net income $ 5,457 5,462 Less: Preferred stock dividends and other 401 377 Wells Fargo net income applicable to common stock (numerator) $ 5,056 5,085 Earnings per common share Average common shares outstanding (denominator) 5,008.6 5,075.7 Per share $ 1.01 1.00 Diluted earnings per common share Average common shares outstanding 5,008.6 5,075.7 Add: Stock options 21.2 21.2 Restricted share rights 28.0 31.7 Warrants 12.6 10.8 Diluted average common shares outstanding (denominator) 5,070.4 5,139.4 Per share $ 1.00 0.99 Table 16.2 presents the outstanding options to purchase shares of common stock that were anti-dilutive (the exercise price was higher than the weighted-average market price), and therefore not included in the calculation of diluted earnings per common share. Table 16.2: Outstanding Anti-Dilutive Options Weighted-average shares Quarter ended March 31, (in millions) 2017 2016 Options 2.2 4.4

Other Comprehensive Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2017
Cumulative Other Comprehensive Income Balances [Abstract]
Other Comprehensive Income	Note 17: Other Comprehensive Income Table 17.1 provides the components of other comprehensive income (OCI), reclassifications to net income by income statement line item, and the related tax effects. Table 17.1: Summary of Other Comprehensive Income Quarter ended March 31, 2017 2016 (in millions) Before tax Tax effect Net of tax Before tax Tax effect Net of tax Investment securities: Net unrealized gains arising during the period $ 369 (133 ) 236 795 (310 ) 485 Reclassification of net (gains) losses to net income: Interest income on investment securities (1) 7 (3 ) 4 — — — Net gains on debt securities (36 ) 13 (23 ) (244 ) 91 (153 ) Net gains from equity investments (116 ) 44 (72 ) (59 ) 22 (37 ) Other noninterest income — — — (1 ) — (1 ) Subtotal reclassifications to net income (145 ) 54 (91 ) (304 ) 113 (191 ) Net change 224 (79 ) 145 491 (197 ) 294 Derivatives and hedging activities: Net unrealized gains (losses) arising during the period (133 ) 50 (83 ) 1,999 (753 ) 1,246 Reclassification of net (gains) losses to net income: Interest income on loans (205 ) 77 (128 ) (260 ) 98 (162 ) Interest expense on long-term debt 3 (1 ) 2 4 (2 ) 2 Subtotal reclassifications to net income (202 ) 76 (126 ) (256 ) 96 (160 ) Net change (335 ) 126 (209 ) 1,743 (657 ) 1,086 Defined benefit plans adjustments: Net actuarial and prior service losses arising during the period (7 ) 3 (4 ) (8 ) 3 (5 ) Reclassification of amounts to net periodic benefit costs (2): Amortization of net actuarial loss 38 (14 ) 24 35 (13 ) 22 Settlements and other — — — 2 (1 ) 1 Subtotal reclassifications to net periodic benefit costs 38 (14 ) 24 37 (14 ) 23 Net change 31 (11 ) 20 29 (11 ) 18 Foreign currency translation adjustments: Net unrealized gains arising during the period 16 1 17 43 8 51 Net change 16 1 17 43 8 51 Other comprehensive income (loss) $ (64 ) 37 (27 ) 2,306 (857 ) 1,449 Less: Other comprehensive income (loss) from noncontrolling interests, net of tax 14 (28 ) Wells Fargo other comprehensive income (loss), net of tax $ (41 ) 1,477 (1) Represents net unrealized gains and losses amortized over the remaining lives of securities that were transferred from the available-for-sale portfolio to the held-to-maturity portfolio. (2) These items are included in the computation of net periodic benefit cost, which is recorded in employee benefits expense (see Note 15 (Employee Benefits) for additional details). Table 17.2: Cumulative OCI Balances (in millions) Investment securities Derivatives and hedging activities Defined benefit plans adjustments Foreign currency translation adjustments Cumulative other compre- hensive income Quarter ended March 31, 2017 Balance, beginning of period $ (1,099 ) 89 (1,943 ) (184 ) (3,137 ) Net unrealized gains (losses) arising during the period 236 (83 ) (4 ) 17 166 Amounts reclassified from accumulated other comprehensive income (91 ) (126 ) 24 — (193 ) Net change 145 (209 ) 20 17 (27 ) Less: Other comprehensive income from noncontrolling interests 13 — — 1 14 Balance, end of period $ (967 ) (120 ) (1,923 ) (168 ) (3,178 ) Quarter ended March 31, 2016 Balance, beginning of period $ 1,813 620 (1,951 ) (185 ) 297 Net unrealized gains (losses) arising during the period 485 1,246 (5 ) 51 1,777 Amounts reclassified from accumulated other comprehensive income (191 ) (160 ) 23 — (328 ) Net change 294 1,086 18 51 1,449 Less: Other comprehensive income (loss) from noncontrolling interests (30 ) — — 2 (28 ) Balance, end of period $ 2,137 1,706 (1,933 ) (136 ) 1,774

Operating Segments

Operating Segments	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Operating Segments	Note 18: Operating Segments We have three reportable operating segments: Community Banking; Wholesale Banking; and Wealth and Investment Management (WIM). We define our operating segments by product type and customer segment and their results are based on our management accounting process, for which there is no comprehensive, authoritative guidance equivalent to GAAP for financial accounting. The management accounting process measures the performance of the operating segments based on our management structure and is not necessarily comparable with similar information for other financial services companies. If the management structure and/or the allocation process changes, allocations, transfers and assignments may change. For a description of our operating segments, including the underlying management accounting process, see Note 24 (Operating Segments) to Financial Statements in our 2016 Form 10-K. Table 18.1 presents our results by operating segment. Table 18.1: Operating Segments Community Banking Wholesale Banking Wealth and Investment Management Other (1) Consolidated Company (income/expense in millions, average balances in billions) 2017 2016 2017 2016 2017 2016 2017 2016 2017 2016 Quarter ended March 31, Net interest income (2) $ 7,627 7,468 4,148 3,748 1,074 943 (549 ) (492 ) 12,300 11,667 Provision (reversal of provision) for credit losses 646 720 (43 ) 363 (4 ) (14 ) 6 17 605 1,086 Noninterest income 4,466 5,146 2,890 3,210 3,119 2,911 (773 ) (739 ) 9,702 10,528 Noninterest expense 7,221 6,836 4,225 3,968 3,206 3,042 (860 ) (818 ) 13,792 13,028 Income (loss) before income tax expense (benefit) 4,226 5,058 2,856 2,627 991 826 (468 ) (430 ) 7,605 8,081 Income tax expense (benefit) 1,127 1,697 746 719 362 314 (178 ) (163 ) 2,057 2,567 Net income (loss) before noncontrolling interests 3,099 3,361 2,110 1,908 629 512 (290 ) (267 ) 5,548 5,514 Less: Net income (loss) from noncontrolling interests 90 65 (5 ) (13 ) 6 — — — 91 52 Net income (loss) (3) $ 3,009 3,296 2,115 1,921 623 512 (290 ) (267 ) 5,457 5,462 Average loans $ 482.7 484.3 466.3 429.8 70.7 64.1 (56.1 ) (51.0 ) 963.6 927.2 Average assets 990.7 947.4 807.8 748.6 221.9 208.1 (89.4 ) (84.2 ) 1,931.0 1,819.9 Average deposits 717.2 683.0 466.0 428.0 195.6 184.5 (79.6 ) (76.1 ) 1,299.2 1,219.4 (1) Includes the elimination of certain items that are included in more than one business segment, substantially all of which represents products and services for Wealth and Investment Management customers served through Community Banking distribution channels. (2) Net interest income is the difference between interest earned on assets and the cost of liabilities to fund those assets. Interest earned includes actual interest earned on segment assets and, if the segment has excess liabilities, interest credits for providing funding to other segments. The cost of liabilities includes interest expense on segment liabilities and, if the segment does not have enough liabilities to fund its assets, a funding charge based on the cost of excess liabilities from another segment. (3) Represents segment net income (loss) for Community Banking; Wholesale Banking; and Wealth and Investment Management segments and Wells Fargo net income for the consolidated company.

Regulatory and Agency Capital R

Regulatory and Agency Capital Requirements	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Regulatory and Agency Capital Requirements	Note 19: Regulatory and Agency Capital Requirements The Company and each of its subsidiary banks are subject to regulatory capital adequacy requirements promulgated by federal bank regulatory agencies. The Federal Reserve establishes capital requirements for the consolidated financial holding company, and the OCC has similar requirements for the Company’s national banks, including Wells Fargo Bank, N.A. (the Bank). Table 19.1 presents regulatory capital information for Wells Fargo & Company and the Bank using Basel III, which increased minimum required capital ratios, and introduced a minimum Common Equity Tier 1 (CET1) ratio. We must report the lower of our CET1, tier 1 and total capital ratios calculated under the Standardized Approach and under the Advanced Approach in the assessment of our capital adequacy. The information presented reflects risk-weighted assets (RWAs) under the Standardized and Advanced Approaches with Transition Requirements. The Standardized Approach applies assigned risk weights to broad risk categories, while the calculation of RWAs under the Advanced Approach differs by requiring applicable banks to utilize a risk-sensitive methodology, which relies upon the use of internal credit models, and includes an operational risk component. The Basel III revised definition of capital, and changes are being phased-in effective January 1, 2014, through the end of 2021. The Bank is an approved seller/servicer of mortgage loans and is required to maintain minimum levels of shareholders’ equity, as specified by various agencies, including the United States Department of Housing and Urban Development, GNMA, FHLMC and FNMA. At March 31, 2017 , the Bank met these requirements. Other subsidiaries, including the Company’s insurance and broker-dealer subsidiaries, are also subject to various minimum capital levels, as defined by applicable industry regulations. The minimum capital levels for these subsidiaries, and related restrictions, are not significant to our consolidated operations. Table 19.1: Regulatory Capital Information Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 (in millions, except ratios) Advanced Approach Standardized Approach Advanced Approach Standardized Advanced Approach Standardized Advanced Approach Standardized Regulatory capital: Common equity tier 1 $ 149,860 149,860 148,785 148,785 133,362 133,362 132,225 132,225 Tier 1 172,543 172,543 171,364 171,364 133,362 133,362 132,225 132,225 Total 205,269 215,158 204,425 214,877 147,007 156,150 145,665 155,281 Assets: Risk-weighted $ 1,250,630 1,300,723 1,274,589 1,336,198 1,123,251 1,190,078 1,143,681 1,222,876 Adjusted average (1) 1,901,719 1,901,719 1,914,802 1,914,802 1,705,841 1,705,841 1,714,524 1,714,524 Regulatory capital ratios: Common equity tier 1 capital 11.98 % 11.52 * 11.67 11.13 * 11.87 11.21 * 11.56 10.81 * Tier 1 capital 13.80 13.27 * 13.44 12.82 * 11.87 11.21 * 11.56 10.81 * Total capital 16.41 * 16.54 16.04 * 16.08 13.09 * 13.12 12.74 12.70 * Tier 1 leverage (1) 9.07 9.07 8.95 8.95 7.82 7.82 7.71 7.71 *Denotes the lowest capital ratio as determined under the Advanced and Standardized Approaches. (1) The leverage ratio consists of Tier 1 capital divided by quarterly average total assets, excluding goodwill and certain other items. Table 19.2 presents the minimum required regulatory capital ratios under Transition Requirements to which the Company and the Bank were subject as of March 31, 2017 and December 31, 2016 . Table 19.2: Minimum Required Regulatory Capital Ratios – Transition Requirements (1) Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Regulatory capital ratios: Common equity tier 1 capital 6.750 % 5.625 5.750 5.125 Tier 1 capital 8.250 7.125 7.250 6.625 Total capital 10.250 9.125 9.250 8.625 Tier 1 leverage 4.000 4.000 4.000 4.000 (1) At March 31, 2017 , under transition requirements, the CET1, tier 1 and total capital minimum ratio requirements for Wells Fargo & Company include a capital conservation buffer of 1.250% and a global systemically important bank (G-SIB) surcharge of 1.000% . Only the 1.250% capital conservation buffer applies to the Bank at March 31, 2017 .

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2017
Significant Accounting Policies [Line Items]
Nature of Operations	Wells Fargo & Company is a diversified financial services company. We provide banking, insurance, trust and investments, mortgage banking, investment banking, retail banking, brokerage, and consumer and commercial finance through branches, the internet and other distribution channels to consumers, businesses and institutions in all 50 states, the District of Columbia, and in foreign countries. When we refer to “Wells Fargo,” “the Company,” “we,” “our” or “us,” we mean Wells Fargo & Company and Subsidiaries (consolidated). Wells Fargo & Company (the Parent) is a financial holding company and a bank holding company. We also hold a majority interest in a real estate investment trust, which has publicly traded preferred stock outstanding.
Use of Estimates	Our accounting and reporting policies conform with U.S. generally accepted accounting principles (GAAP) and practices in the financial services industry. For discussion of our significant accounting policies, see Note 1 (Summary of Significant Accounting Policies) in our Annual Report on Form 10-K for the year ended December 31, 2016 ( 2016 Form 10-K). There were no material changes to these policies in the first quarter 2017 . To prepare the financial statements in conformity with GAAP, management must make estimates based on assumptions about future economic and market conditions (for example, unemployment, market liquidity, real estate prices, etc.) that affect the reported amounts of assets and liabilities at the date of the financial statements, income and expenses during the reporting period and the related disclosures. Although our estimates contemplate current conditions and how we expect them to change in the future, it is reasonably possible that actual conditions could be worse than anticipated in those estimates, which could materially affect our results of operations and financial condition. Management has made significant estimates in several areas, including allowance for credit losses and purchased credit-impaired (PCI) loans (Note 5 (Loans and Allowance for Credit Losses)), valuations of residential mortgage servicing rights (MSRs) (Note 7 (Securitizations and Variable Interest Entities) and Note 8 (Mortgage Banking Activities)) and financial instruments (Note 13 (Fair Values of Assets and Liabilities)), and income taxes. Actual results could differ from those estimates.
Comparability of Prior Year Financial Data	These unaudited interim financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. The interim financial information should be read in conjunction with our 2016 Form 10-K.
Accounting Standards Adopted in 2017	Accounting Standards Adopted in 2017 In first quarter 2017 , we adopted the following new accounting guidance: • Accounting Standards Update (ASU or Update) 2016-09 – Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting; • ASU 2016-07 - Investments - Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting; • ASU 2016-06 - Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments; and • ASU 2016-05 - Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships.
Private Share Repurchases	Private Share Repurchases From time to time we enter into private forward repurchase transactions with unrelated third parties to complement our open-market common stock repurchase strategies, to allow us to manage our share repurchases in a manner consistent with our capital plans submitted annually under the Comprehensive Capital Analysis and Review (CCAR) and to provide an economic benefit to the Company. Our payments to the counterparties for these contracts are recorded in permanent equity in the quarter paid and are not subject to re-measurement. The classification of the up-front payments as permanent equity assures that we have appropriate repurchase timing consistent with our capital plans, which contemplate a fixed dollar amount available per quarter for share repurchases pursuant to Federal Reserve Board (FRB) supervisory guidance. In return, the counterparty agrees to deliver a variable number of shares based on a per share discount to the volume-weighted average stock price over the contract period. There are no scenarios where the contracts would not either physically settle in shares or allow us to choose the settlement method. Our total number of outstanding shares of common stock is not reduced until settlement of the private share repurchase contract. We had no unsettled private share repurchase contracts at both March 31, 2017 and March 31, 2016 .
Subsequent Events	SUBSEQUENT EVENTS We have evaluated the effects of events that have occurred subsequent to March 31, 2017 , and there have been no material events that would require recognition in our first quarter 2017 consolidated financial statements or disclosure in the Notes to the consolidated financial statements.
Accounting Standards Update 2016-09 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards Adopted in 2017	ASU 2016-09 Simplifies the accounting for share-based payment awards issued to employees. We have income tax effects based on changes in our stock price from the grant date to the vesting date of the employee stock compensation. The Update requires these income tax effects to be recognized in the statement of income within income tax expense instead of within additional paid-in capital. In addition, the Update requires changes to the Statement of Cash Flows including the classification between the operating and financing section for tax activity related to employee stock compensation, which we adopted retrospectively. We recorded excess tax benefits and tax deficiencies within income tax expense in the statement of income in first quarter 2017, on a prospective basis.
Accounting Standards Update 2016-07 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards Adopted in 2017	ASU 2016-07 eliminates the requirement for companies to retroactively apply the equity method of accounting for investments when increases in ownership interests or degree of influence result in the adoption of the equity method. Under the guidance, the equity method should be applied prospectively in the period in which the ownership changes occur. We adopted this change in first quarter 2017. The Update did not impact our consolidated financial statements, as the standard is applied on a prospective basis.
Accounting Standards Update 2016-06 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards Adopted in 2017	ASU 2016-06 clarifies the criteria entities should use when evaluating whether embedded contingent put and call options in debt instruments should be separated from the debt instrument and accounted for separately as derivatives. The Update clarifies that companies should not consider whether the event that triggers the ability to exercise put or call options is related to interest rates or credit risk. We adopted this change in first quarter 2017. The Update did not have a material impact on our consolidated financial statements.
Accounting Standards Update 2016-05 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards Adopted in 2017	ASU 2016-05 clarifies that a change in the counterparty to a derivative instrument that has been designated as an accounting hedge does not require the hedging relationship to be dedesignated as long as all other hedge accounting criteria continue to be met. We adopted the guidance in first quarter 2017. The Update did not have a material impact on our consolidated financial statements.
Accounting Standards Update 2016-15 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards with Retrospective Application [Policy Text Block]	Accounting Standards with Retrospective Application The following accounting pronouncement has been issued by the FASB but is not yet effective: • ASU 2016-15 – Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice for reporting in the Statement of Cash Flows. The Update is effective for us in first quarter 2018 with retrospective application. We are evaluating the impact the Update will have on our consolidated financial statements.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Supplemental Cash Flow Information	SUPPLEMENTAL CASH FLOW INFORMATION Significant noncash activities are presented below. Table 1.1: Supplemental Cash Flow Information Quarter ended March 31, (in millions) 2017 2016 Trading assets retained from securitization of MHFS $ 20,929 9,955 Transfers from loans to MHFS 1,657 1,839 Transfers from available-for-sale to held-to-maturity securities 9,897 —

Federal Funds Sold, Securitie31

Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments (Tables)	3 Months Ended
	Mar. 31, 2017
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Abstract]
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments	Table 3.1 provides the detail of federal funds sold, securities purchased under short-term resale agreements (generally less than one year) and other short-term investments. Substantially all of the interest-earning deposits at March 31, 2017 , and December 31, 2016 , were held at Federal Reserve Banks. Table 3.1: Fed Funds Sold and Other Short-Term Investments (in millions) Mar 31, Dec 31, Federal funds sold and securities purchased under resale agreements $ 68,457 58,215 Interest-earning deposits 227,635 200,671 Other short-term investments 12,655 7,152 Total $ 308,747 266,038

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities, Amortized Cost and Fair Value, by Category	Table 4.1 provides the amortized cost and fair value by major categories of available-for-sale securities, which are carried at fair value, and held-to-maturity debt securities, which are carried at amortized cost. The net unrealized gains (losses) for available-for-sale securities are reported on an after-tax basis as a component of cumulative OCI. Table 4.1: Amortized Cost and Fair Value (in millions) Amortized Cost Gross unrealized gains Gross unrealized losses Fair value March 31, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ 24,681 43 (99 ) 24,625 Securities of U.S. states and political subdivisions 52,747 624 (1,310 ) 52,061 Mortgage-backed securities: Federal agencies 159,098 1,042 (3,174 ) 156,966 Residential 7,146 457 (10 ) 7,593 Commercial 6,595 93 (48 ) 6,640 Total mortgage-backed securities 172,839 1,592 (3,232 ) 171,199 Corporate debt securities 10,097 418 (85 ) 10,430 Collateralized loan and other debt obligations (1) 33,686 341 (18 ) 34,009 Other (2) 5,963 139 (21 ) 6,081 Total debt securities 300,013 3,157 (4,765 ) 298,405 Marketable equity securities: Perpetual preferred securities 467 21 (6 ) 482 Other marketable equity securities 208 436 (1 ) 643 Total marketable equity securities 675 457 (7 ) 1,125 Total available-for-sale securities 300,688 3,614 (4,772 ) 299,530 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies 44,697 518 (61 ) 45,154 Securities of U.S. states and political subdivisions 6,331 28 (120 ) 6,239 Federal agency and other mortgage-backed securities (3) 53,778 91 (870 ) 52,999 Collateralized loan obligations 1,011 5 — 1,016 Other (2) 2,213 9 (1 ) 2,221 Total held-to-maturity securities 108,030 651 (1,052 ) 107,629 Total $ 408,718 4,265 (5,824 ) 407,159 December 31, 2016 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ 25,874 54 (109 ) 25,819 Securities of U.S. states and political subdivisions 52,121 551 (1,571 ) 51,101 Mortgage-backed securities: Federal agencies 163,513 1,175 (3,458 ) 161,230 Residential 7,375 449 (8 ) 7,816 Commercial 8,475 101 (74 ) 8,502 Total mortgage-backed securities 179,363 1,725 (3,540 ) 177,548 Corporate debt securities 11,186 381 (110 ) 11,457 Collateralized loan and other debt obligations (1) 34,764 287 (31 ) 35,020 Other (2) 6,139 104 (35 ) 6,208 Total debt securities 309,447 3,102 (5,396 ) 307,153 Marketable equity securities: Perpetual preferred securities 445 35 (11 ) 469 Other marketable equity securities 261 481 — 742 Total marketable equity securities 706 516 (11 ) 1,211 Total available-for-sale securities 310,153 3,618 (5,407 ) 308,364 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies 44,690 466 (77 ) 45,079 Securities of U.S. states and political subdivisions 6,336 17 (144 ) 6,209 Federal agency and other mortgage-backed securities (3) 45,161 100 (804 ) 44,457 Collateralized loan obligations 1,065 6 (1 ) 1,070 Other (2) 2,331 10 (1 ) 2,340 Total held-to-maturity securities 99,583 599 (1,027 ) 99,155 Total $ 409,736 4,217 (6,434 ) 407,519 (1) The available-for-sale portfolio includes collateralized debt obligations (CDOs) with a cost basis and fair value of $875 million and $945 million , respectively, at March 31, 2017 , and $819 million and $847 million , respectively, at December 31, 2016 . (2) The “Other” category of available-for-sale securities largely includes asset-backed securities collateralized by student loans. Included in the “Other” category of held-to-maturity securities are asset-backed securities collateralized by automobile leases or loans and cash with a cost basis and fair value of $1.2 billion each at March 31, 2017 , and $1.3 billion each at December 31, 2016 . Also included in the “Other” category of held-to-maturity securities are asset-backed securities collateralized by dealer floorplan loans with a cost basis and fair value of $1.1 billion each at both March 31, 2017 and December 31, 2016 . (3) Predominantly consists of federal agency mortgage-backed securities at both March 31, 2017 and December 31, 2016 .
Investment Securities, Gross Unrealized Losses and Fair Value, Over and Under 12 Months	Table 4.2 shows the gross unrealized losses and fair value of securities in the investment securities portfolio by length of time that individual securities in each category have been in a continuous loss position. Debt securities on which we have taken credit-related OTTI write-downs are categorized as being “less than 12 months” or “12 months or more” in a continuous loss position based on the point in time that the fair value declined to below the cost basis and not the period of time since the credit-related OTTI write-down. Table 4.2: Gross Unrealized Losses and Fair Value Less than 12 months 12 months or more Total (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (99 ) 11,090 — — (99 ) 11,090 Securities of U.S. states and political subdivisions (210 ) 14,826 (1,100 ) 16,070 (1,310 ) 30,896 Mortgage-backed securities: Federal agencies (3,066 ) 112,495 (108 ) 3,358 (3,174 ) 115,853 Residential (5 ) 389 (5 ) 240 (10 ) 629 Commercial (30 ) 974 (18 ) 1,084 (48 ) 2,058 Total mortgage-backed securities (3,101 ) 113,858 (131 ) 4,682 (3,232 ) 118,540 Corporate debt securities (7 ) 883 (78 ) 878 (85 ) 1,761 Collateralized loan and other debt obligations (2 ) 1,366 (16 ) 1,399 (18 ) 2,765 Other (6 ) 727 (15 ) 988 (21 ) 1,715 Total debt securities (3,425 ) 142,750 (1,340 ) 24,017 (4,765 ) 166,767 Marketable equity securities: Perpetual preferred securities (1 ) 61 (5 ) 48 (6 ) 109 Other marketable equity securities (1 ) 5 — — (1 ) 5 Total marketable equity securities (2 ) 66 (5 ) 48 (7 ) 114 Total available-for-sale securities (3,427 ) 142,816 (1,345 ) 24,065 (4,772 ) 166,881 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (61 ) 4,772 — — (61 ) 4,772 Securities of U.S. states and political subdivisions (120 ) 4,497 — — (120 ) 4,497 Federal agency and other mortgage-backed securities (870 ) 48,779 — — (870 ) 48,779 Collateralized loan obligations — — — — — — Other — — (1 ) 178 (1 ) 178 Total held-to-maturity securities (1,051 ) 58,048 (1 ) 178 (1,052 ) 58,226 Total $ (4,478 ) 200,864 (1,346 ) 24,243 (5,824 ) 225,107 December 31, 2016 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (109 ) 10,816 — — (109 ) 10,816 Securities of U.S. states and political subdivisions (341 ) 17,412 (1,230 ) 16,213 (1,571 ) 33,625 Mortgage-backed securities: Federal agencies (3,338 ) 120,735 (120 ) 3,481 (3,458 ) 124,216 Residential (4 ) 527 (4 ) 245 (8 ) 772 Commercial (43 ) 1,459 (31 ) 1,690 (74 ) 3,149 Total mortgage-backed securities (3,385 ) 122,721 (155 ) 5,416 (3,540 ) 128,137 Corporate debt securities (11 ) 946 (99 ) 1,229 (110 ) 2,175 Collateralized loan and other debt obligations (2 ) 1,899 (29 ) 3,197 (31 ) 5,096 Other (9 ) 971 (26 ) 1,262 (35 ) 2,233 Total debt securities (3,857 ) 154,765 (1,539 ) 27,317 (5,396 ) 182,082 Marketable equity securities: Perpetual preferred securities (3 ) 41 (8 ) 45 (11 ) 86 Other marketable equity securities — — — — — — Total marketable equity securities (3 ) 41 (8 ) 45 (11 ) 86 Total available-for-sale securities (3,860 ) 154,806 (1,547 ) 27,362 (5,407 ) 182,168 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (77 ) 6,351 — — (77 ) 6,351 Securities of U.S. states and political subdivisions (144 ) 4,871 — — (144 ) 4,871 Federal agency and other mortgage-backed securities (804 ) 40,095 — — (804 ) 40,095 Collateralized loan obligations — — (1 ) 266 (1 ) 266 Other — — (1 ) 633 (1 ) 633 Total held-to-maturity securities (1,025 ) 51,317 (2 ) 899 (1,027 ) 52,216 Total $ (4,885 ) 206,123 (1,549 ) 28,261 (6,434 ) 234,384
Investment Securities, Gross Unrealized Losses and Fair Value, by Investment Grade	Table 4.3 shows the gross unrealized losses and fair value of debt and perpetual preferred investment securities by those rated investment grade and those rated less than investment grade, according to their lowest credit rating by Standard & Poor’s Rating Services (S&P) or Moody’s Investors Service (Moody’s). Credit ratings express opinions about the credit quality of a security. Securities rated investment grade, that is those rated BBB- or higher by S&P or Baa3 or higher by Moody’s, are generally considered by the rating agencies and market participants to be low credit risk. Conversely, securities rated below investment grade, labeled as “speculative grade” by the rating agencies, are considered to be distinctively higher credit risk than investment grade securities. We have also included securities not rated by S&P or Moody’s in the table below based on our internal credit grade of the securities (used for credit risk management purposes) equivalent to the credit rating assigned by major credit agencies. The unrealized losses and fair value of unrated securities categorized as investment grade based on internal credit grades were $38 million and $5.9 billion , respectively, at March 31, 2017 , and $54 million and $7.0 billion , respectively, at December 31, 2016 . If an internal credit grade was not assigned, we categorized the security as non-investment grade. Table 4.3: Gross Unrealized Losses and Fair Value by Investment Grade Investment grade Non-investment grade (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (99 ) 11,090 — — Securities of U.S. states and political subdivisions (1,262 ) 30,538 (48 ) 358 Mortgage-backed securities: Federal agencies (3,174 ) 115,853 — — Residential (1 ) 105 (9 ) 524 Commercial (8 ) 1,562 (40 ) 496 Total mortgage-backed securities (3,183 ) 117,520 (49 ) 1,020 Corporate debt securities (23 ) 972 (62 ) 789 Collateralized loan and other debt obligations (18 ) 2,765 — — Other (16 ) 1,307 (5 ) 408 Total debt securities (4,601 ) 164,192 (164 ) 2,575 Perpetual preferred securities (5 ) 90 (1 ) 19 Total available-for-sale securities (4,606 ) 164,282 (165 ) 2,594 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (61 ) 4,772 — — Securities of U.S. states and political subdivisions (120 ) 4,497 — — Federal agency and other mortgage-backed securities (869 ) 48,711 (1 ) 68 Collateralized loan obligations — — — — Other (1 ) 178 — — Total held-to-maturity securities (1,051 ) 58,158 (1 ) 68 Total $ (5,657 ) 222,440 (166 ) 2,662 December 31, 2016 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (109 ) 10,816 — — Securities of U.S. states and political subdivisions (1,517 ) 33,271 (54 ) 354 Mortgage-backed securities: Federal agencies (3,458 ) 124,216 — — Residential (1 ) 176 (7 ) 596 Commercial (15 ) 2,585 (59 ) 564 Total mortgage-backed securities (3,474 ) 126,977 (66 ) 1,160 Corporate debt securities (31 ) 1,238 (79 ) 937 Collateralized loan and other debt obligations (31 ) 5,096 — — Other (30 ) 1,842 (5 ) 391 Total debt securities (5,192 ) 179,240 (204 ) 2,842 Perpetual preferred securities (10 ) 68 (1 ) 18 Total available-for-sale securities (5,202 ) 179,308 (205 ) 2,860 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (77 ) 6,351 — — Securities of U.S. states and political subdivisions (144 ) 4,871 — — Federal agency and other mortgage-backed securities (803 ) 40,078 (1 ) 17 Collateralized loan obligations (1 ) 266 — — Other (1 ) 633 — — Total held-to-maturity securities (1,026 ) 52,199 (1 ) 17 Total $ (6,228 ) 231,507 (206 ) 2,877
Debt Securities Contractual Maturities	Table 4.4 shows the remaining contractual maturities and contractual weighted-average yields (taxable-equivalent basis) of available-for-sale debt securities. The remaining contractual principal maturities for MBS do not consider prepayments. Remaining expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations before the underlying mortgages mature. Table 4.4: Contractual Maturities Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2017 Available-for-sale debt securities (1): Fair value: Securities of U.S. Treasury and federal agencies $ 24,625 1.45 % $ 1,322 0.92 % $ 22,288 1.46 % $ 1,015 1.80 % $ — — % Securities of U.S. states and political subdivisions 52,061 5.68 2,590 1.80 9,990 2.86 2,597 4.65 36,884 6.78 Mortgage-backed securities: Federal agencies 156,966 3.11 1 5.16 107 3.07 5,564 3.08 151,294 3.11 Residential 7,593 3.84 — — 26 5.50 23 3.85 7,544 3.84 Commercial 6,640 4.40 — — — — 31 3.13 6,609 4.40 Total mortgage-backed securities 171,199 3.20 1 5.16 133 3.54 5,618 3.08 165,447 3.20 Corporate debt securities 10,430 4.92 1,467 3.70 3,124 5.79 4,696 4.63 1,143 5.35 Collateralized loan and other debt obligations 34,009 2.81 — — 153 1.84 17,841 2.77 16,015 2.86 Other 6,081 2.37 40 3.21 871 2.41 1,170 2.24 4,000 2.39 Total available-for-sale debt securities at fair value $ 298,405 3.48 % $ 5,420 2.11 % $ 36,559 2.25 % $ 32,937 3.19 % $ 223,489 3.76 % December 31, 2016 Available-for-sale debt securities (1): ` Fair value: Securities of U.S. Treasury and federal agencies $ 25,819 1.44 % $ 1,328 0.92 % $ 23,477 1.45 % $ 1,014 1.80 % $ — — % Securities of U.S. states and political subdivisions 51,101 5.65 2,990 1.69 9,299 2.74 2,391 4.71 36,421 6.78 Mortgage-backed securities: Federal agencies 161,230 3.09 — — 128 2.98 5,363 3.16 155,739 3.09 Residential 7,816 3.84 — — 25 5.21 35 4.34 7,756 3.83 Commercial 8,502 4.58 — — — — 30 3.13 8,472 4.59 Total mortgage-backed securities 177,548 3.19 — — 153 3.34 5,428 3.16 171,967 3.19 Corporate debt securities 11,457 4.81 2,043 2.90 3,374 5.89 4,741 4.71 1,299 5.38 Collateralized loan and other debt obligations 35,020 2.70 — — 168 1.34 16,482 2.66 18,370 2.74 Other 6,208 2.18 57 3.06 971 2.35 1,146 2.04 4,034 2.17 Total available-for-sale debt securities at fair value $ 307,153 3.44 % $ 6,418 1.93 % $ 37,442 2.20 % $ 31,202 3.17 % $ 232,091 3.72 % (1) Weighted-average yields displayed by maturity bucket are weighted based on fair value and predominantly represent contractual coupon rates without effect for any related hedging derivatives. Table 4.5 shows the amortized cost and weighted-average yields of held-to-maturity debt securities by contractual maturity. Table 4.5: Amortized Cost by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2017 Held-to-maturity securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,697 2.12 % $ — — % $ 32,311 2.04 % $ 12,386 2.32 % $ — — % Securities of U.S. states and political subdivisions 6,331 6.04 — — 24 8.20 470 6.72 5,837 5.98 Federal agency and other mortgage-backed securities 53,778 3.19 — — — — — — 53,778 3.19 Collateralized loan obligations 1,011 2.66 — — — — 1,011 2.66 — — Other 2,213 2.00 — — 1,565 1.95 648 2.13 — — Total held-to-maturity debt securities at amortized cost $ 108,030 2.88 % $ — — % $ 33,900 2.04 % $ 14,515 2.48 % $ 59,615 3.46 % December 31, 2016 Held-to-maturity securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,690 2.12 % $ — — % $ 31,956 2.05 % $ 12,734 2.30 % $ — — % Securities of U.S. states and political subdivisions 6,336 6.04 — — 24 8.20 436 6.76 5,876 5.98 Federal agency and other mortgage-backed securities 45,161 3.23 — — — — — — 45,161 3.23 Collateralized loan obligations 1,065 2.58 — — — — 1,065 2.58 — — Other 2,331 1.83 — — 1,683 1.81 648 1.89 — — Total held-to-maturity debt securities at amortized cost $ 99,583 2.87 % $ — — % $ 33,663 2.04 % $ 14,883 2.43 % $ 51,037 3.55 % (1) Weighted-average yields displayed by maturity bucket are weighted based on amortized cost and predominantly represent contractual coupon rates. Table 4.6 shows the fair value of held-to-maturity debt securities by contractual maturity. Table 4.6: Fair Value by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Amount Amount Amount Amount March 31, 2017 Held-to-maturity securities: Fair value: Securities of U.S. Treasury and federal agencies $ 45,154 — 32,686 12,468 — Securities of U.S. states and political subdivisions 6,239 — 24 469 5,746 Federal agency and other mortgage-backed securities 52,999 — — — 52,999 Collateralized loan obligations 1,016 — — 1,016 — Other 2,221 — 1,568 653 — Total held-to-maturity debt securities at fair value $ 107,629 — 34,278 14,606 58,745 December 31, 2016 Held-to-maturity securities: Fair value: Securities of U.S. Treasury and federal agencies $ 45,079 — 32,313 12,766 — Securities of U.S. states and political subdivisions 6,209 — 24 430 5,755 Federal agency and other mortgage-backed securities 44,457 — — — 44,457 Collateralized loan obligations 1,070 — — 1,070 — Other 2,340 — 1,688 652 — Total held-to-maturity debt securities at fair value $ 99,155 — 34,025 14,918 50,212
Investment Securities and Nonmarketable Equity Investments, Realized Gains and Losses	Table 4.7 shows the gross realized gains and losses on sales and OTTI write-downs related to the available-for-sale securities portfolio, which includes marketable equity securities, as well as net realized gains and losses on nonmarketable equity investments (see Note 6 (Other Assets)). Table 4.7: Realized Gains and Losses Quarter ended March 31, (in millions) 2017 2016 Gross realized gains $ 241 385 Gross realized losses (36 ) (13 ) OTTI write-downs (53 ) (69 ) Net realized gains from available-for-sale securities 152 303 Net realized gains from nonmarketable equity investments 287 185 Net realized gains from debt securities and equity investments $ 439 488
Investment Securities and Nonmarketable Equity Investments, Other Than Temporary Impairment	Table 4.8 shows the detail of total OTTI write-downs included in earnings for available-for-sale debt securities, marketable equity securities and nonmarketable equity investments. There were no OTTI write-downs on held-to-maturity securities during first quarter 2017 and 2016 . Table 4.8: OTTI Write-downs Quarter ended March 31, (in millions) 2017 2016 OTTI write-downs included in earnings Debt securities: Securities of U.S. states and political subdivisions $ 8 4 Mortgage-backed securities: Residential 3 12 Commercial 25 1 Corporate debt securities 16 45 Other debt securities — 3 Total debt securities 52 65 Equity securities: Marketable equity securities: Other marketable equity securities 1 4 Total marketable equity securities 1 4 Total investment securities (1) 53 69 Nonmarketable equity investments (1) 76 129 Total OTTI write-downs included in earnings (1) $ 129 198 (1) The quarters ended March 31, 2017 and March 31, 2016 , include $39 million and $124 million , respectively, in OTTI write-downs of oil and gas investments, of which $15 million and $46 million , respectively, related to investment securities and $24 million and $78 million , respectively, related to nonmarketable equity investments.
Debt Securities Other Than Temporary Impairment Included in Earnings	Table 4.9 shows the detail of OTTI write-downs on available-for-sale debt securities included in earnings and the related changes in OCI for the same securities. Table 4.9: OTTI Write-downs Included in Earnings Quarter ended March 31, (in millions) 2017 2016 OTTI on debt securities Recorded as part of gross realized losses: Credit-related OTTI $ 52 61 Intent-to-sell OTTI — 4 Total recorded as part of gross realized losses 52 65 Changes to OCI for losses (reversal of losses) in non-credit-related OTTI (1): Securities of U.S. states and political subdivisions (5 ) — Residential mortgage-backed securities 3 10 Commercial mortgage-backed securities (7 ) 3 Corporate debt securities — (4 ) Other debt securities — 2 Total changes to OCI for non-credit-related OTTI (9 ) 11 Total OTTI losses recorded on debt securities $ 43 76 (1) Represents amounts recorded to OCI for impairment, due to factors other than credit, on debt securities that have also had credit-related OTTI write-downs during the period. Increases represent initial or subsequent non-credit-related OTTI on debt securities. Decreases represent partial to full reversal of impairment due to recoveries in the fair value of securities due to non-credit factors.
Rollforward of Credit Loss Component Of Credit-Impaired Debt Securities	Table 4.10 presents a rollforward of the OTTI credit loss that has been recognized in earnings as a write-down of available-for-sale debt securities we still own (referred to as "credit-impaired" debt securities) and do not intend to sell. Recognized credit loss represents the difference between the present value of expected future cash flows discounted using the security’s current effective interest rate and the amortized cost basis of the security prior to considering credit loss. Table 4.10: Rollforward of OTTI Credit Loss Quarter ended March 31, (in millions) 2017 2016 Credit loss recognized, beginning of period $ 1,043 1,092 Additions: For securities with initial credit impairments 6 38 For securities with previous credit impairments 46 23 Total additions 52 61 Reductions: For securities sold, matured, or intended/required to be sold (7 ) (6 ) For recoveries of previous credit impairments (1) (2 ) (2 ) Total reductions (9 ) (8 ) Credit loss recognized, end of period $ 1,086 1,145 (1) Recoveries of previous credit impairments result from increases in expected cash flows subsequent to credit loss recognition. Such recoveries are reflected prospectively as interest yield adjustments using the effective interest method.

Loans and Allowance for Credi33

Loans and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans and Allowance for Credit Losses, Loans Outstanding	Table 5.1 presents total loans outstanding by portfolio segment and class of financing receivable. Outstanding balances include a total net reduction of $4.3 billion and $4.4 billion at March 31, 2017 , and December 31, 2016 , respectively, for unearned income, net deferred loan fees, and unamortized discounts and premiums. Table 5.1: Loans Outstanding (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 329,252 330,840 Real estate mortgage 131,532 132,491 Real estate construction 25,064 23,916 Lease financing 19,156 19,289 Total commercial 505,004 506,536 Consumer: Real estate 1-4 family first mortgage 274,633 275,579 Real estate 1-4 family junior lien mortgage 44,333 46,237 Credit card 34,742 36,700 Automobile 60,408 62,286 Other revolving credit and installment 39,285 40,266 Total consumer 453,401 461,068 Total loans $ 958,405 967,604 Our foreign loans are reported by respective class of financing receivable in the table above. Substantially all of our foreign loan portfolio is commercial loans. Loans are classified as foreign primarily based on whether the borrower’s primary address is outside of the United States. Table 5.2 presents total commercial foreign loans outstanding by class of financing receivable. Table 5.2: Commercial Foreign Loans Outstanding (in millions) Mar 31, Dec 31, Commercial foreign loans: Commercial and industrial $ 56,987 55,396 Real estate mortgage 8,206 8,541 Real estate construction 471 375 Lease financing 986 972 Total commercial foreign loans $ 66,650 65,284
Loans and Allowance for Credit Losses, Significant Activity	Table 5.3 summarizes the proceeds paid or received for purchases and sales of loans and transfers from loans held for investment to mortgages/loans held for sale at lower of cost or fair value. This loan activity also includes participating interests, whereby we receive or transfer a portion of a loan. The table excludes PCI loans and loans for which we have elected the fair value option, including loans originated for sale because their loan activity normally does not impact the allowance for credit losses. Table 5.3: Loan Purchases, Sales, and Transfers 2017 2016 (in millions) Commercial Consumer (1) Total Commercial (2) Consumer (1) Total Quarter ended March 31, Purchases $ 1,159 2 1,161 24,646 — 24,646 Sales (287 ) (62 ) (349 ) (223 ) (272 ) (495 ) Transfers to MHFS/LHFS (479 ) — (479 ) (32 ) (3 ) (35 ) (1) Excludes activity in government insured/guaranteed real estate 1-4 family first mortgage loans. As servicer, we are able to buy delinquent insured/guaranteed loans out of the Government National Mortgage Association (GNMA) pools, and manage and/or resell them in accordance with applicable requirements. These loans are predominantly insured by the Federal Housing Administration (FHA) or guaranteed by the Department of Veterans Affairs (VA). Accordingly, these loans have limited impact on the allowance for loan losses. (2) Purchases include loans and capital leases from the 2016 GE Capital business acquisitions.
Loans and Allowance for Credit Losses, Commitments to Lend	The contractual amount of our unfunded credit commitments, including unissued standby and commercial letters of credit, is summarized by portfolio segment and class of financing receivable in Table 5.4 . The table excludes the issued standby and commercial letters of credit and temporary advance arrangements described above. Table 5.4: Unfunded Credit Commitments (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 316,794 319,662 Real estate mortgage 7,448 7,833 Real estate construction 17,794 18,840 Lease financing 11 16 Total commercial 342,047 346,351 Consumer: Real estate 1-4 family first mortgage 33,594 33,498 Real estate 1-4 family junior lien mortgage 41,070 41,431 Credit card 104,630 101,895 Other revolving credit and installment 27,814 28,349 Total consumer 207,108 205,173 Total unfunded credit commitments $ 549,155 551,524
Loans and Allowance for Credit Losses, Allowance for Credit Losses	Table 5.5 presents the allowance for credit losses, which consists of the allowance for loan losses and the allowance for unfunded credit commitments. Table 5.5: Allowance for Credit Losses Quarter ended March 31, (in millions) 2017 2016 Balance, beginning of period $ 12,540 12,512 Provision for credit losses 605 1,086 Interest income on certain impaired loans (1) (48 ) (48 ) Loan charge-offs: Commercial: Commercial and industrial (253 ) (349 ) Real estate mortgage (5 ) (3 ) Real estate construction — — Lease financing (7 ) (4 ) Total commercial (265 ) (356 ) Consumer: Real estate 1-4 family first mortgage (69 ) (137 ) Real estate 1-4 family junior lien mortgage (93 ) (133 ) Credit card (367 ) (314 ) Automobile (255 ) (211 ) Other revolving credit and installment (189 ) (175 ) Total consumer (973 ) (970 ) Total loan charge-offs (1,238 ) (1,326 ) Loan recoveries: Commercial: Commercial and industrial 82 76 Real estate mortgage 30 32 Real estate construction 8 8 Lease financing 2 3 Total commercial 122 119 Consumer: Real estate 1-4 family first mortgage 62 89 Real estate 1-4 family junior lien mortgage 70 59 Credit card 58 52 Automobile 88 84 Other revolving credit and installment 33 37 Total consumer 311 321 Total loan recoveries 433 440 Net loan charge-offs (805 ) (886 ) Other (5 ) 4 Balance, end of period $ 12,287 12,668 Components: Allowance for loan losses $ 11,168 11,621 Allowance for unfunded credit commitments 1,119 1,047 Allowance for credit losses $ 12,287 12,668 Net loan charge-offs (annualized) as a percentage of average total loans 0.34 % 0.38 Allowance for loan losses as a percentage of total loans 1.17 1.23 Allowance for credit losses as a percentage of total loans 1.28 1.34 (1) Certain impaired loans with an allowance calculated by discounting expected cash flows using the loan’s effective interest rate over the remaining life of the loan recognize changes in allowance attributable to the passage of time as interest income.
Loans and Allowance for Credit Losses, Allowance Activity by Portfolio Segment	Table 5.6 summarizes the activity in the allowance for credit losses by our commercial and consumer portfolio segments. Table 5.6: Allowance Activity by Portfolio Segment 2017 2016 (in millions) Commercial Consumer Total Commercial Consumer Total Quarter ended March 31, Balance, beginning of period $ 7,394 5,146 12,540 6,872 5,640 12,512 Provision (reversal of provision) for credit losses (89 ) 694 605 714 372 1,086 Interest income on certain impaired loans (15 ) (33 ) (48 ) (5 ) (43 ) (48 ) Loan charge-offs (265 ) (973 ) (1,238 ) (356 ) (970 ) (1,326 ) Loan recoveries 122 311 433 119 321 440 Net loan charge-offs (143 ) (662 ) (805 ) (237 ) (649 ) (886 ) Other (5 ) — (5 ) 4 — 4 Balance, end of period $ 7,142 5,145 12,287 7,348 5,320 12,668
Loans and Allowance for Credit Losses, by Impairment Methodology	Table 5.7 disaggregates our allowance for credit losses and recorded investment in loans by impairment methodology. Table 5.7: Allowance by Impairment Methodology Allowance for credit losses Recorded investment in loans (in millions) Commercial Consumer Total Commercial Consumer Total March 31, 2017 Collectively evaluated (1) $ 6,281 3,691 9,972 499,565 421,619 921,184 Individually evaluated (2) 859 1,454 2,313 5,076 16,475 21,551 PCI (3) 2 — 2 363 15,307 15,670 Total $ 7,142 5,145 12,287 505,004 453,401 958,405 December 31, 2016 Collectively evaluated (1) $ 6,392 3,553 9,945 500,487 428,009 928,496 Individually evaluated (2) 1,000 1,593 2,593 5,372 17,005 22,377 PCI (3) 2 — 2 677 16,054 16,731 Total $ 7,394 5,146 12,540 506,536 461,068 967,604 (1) Represents loans collectively evaluated for impairment in accordance with Accounting Standards Codification (ASC) 450-20, Loss Contingencies (formerly FAS 5), and pursuant to amendments by ASU 2010-20 regarding allowance for non-impaired loans. (2) Represents loans individually evaluated for impairment in accordance with ASC 310-10, Receivables (formerly FAS 114), and pursuant to amendments by ASU 2010-20 regarding allowance for impaired loans. (3) Represents the allowance and related loan carrying value determined in accordance with ASC 310-30 , Receivables – Loans and Debt Securities Acquired with Deteriorated Credit Quality (formerly SOP 03-3) and pursuant to amendments by ASU 2010-20 regarding allowance for PCI loans.
Loans and Allowance for Credit Losses, Loans by Credit Quality Indicator	Table 5.8 provides a breakdown of outstanding commercial loans by risk category. Of the $20.4 billion in criticized commercial and industrial loans and $5.7 billion in criticized commercial real estate (CRE) loans at March 31, 2017 , $2.9 billion and $712 million , respectively, have been placed on nonaccrual status and written down to net realizable collateral value. Table 5.8: Commercial Loans by Risk Category (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2017 By risk category: Pass $ 308,652 126,215 24,450 17,881 477,198 Criticized 20,423 5,153 592 1,275 27,443 Total commercial loans (excluding PCI) 329,075 131,368 25,042 19,156 504,641 Total commercial PCI loans (carrying value) 177 164 22 — 363 Total commercial loans $ 329,252 131,532 25,064 19,156 505,004 December 31, 2016 By risk category: Pass $ 308,166 126,793 23,408 17,899 476,266 Criticized 22,437 5,315 451 1,390 29,593 Total commercial loans (excluding PCI) 330,603 132,108 23,859 19,289 505,859 Total commercial PCI loans (carrying value) 237 383 57 — 677 Total commercial loans $ 330,840 132,491 23,916 19,289 506,536
Loans and Allowance for Credit Losses, Loans by Delinquency Status, Commercial	Table 5.9 provides past due information for commercial loans, which we monitor as part of our credit risk management practices. Table 5.9: Commercial Loans by Delinquency Status (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2017 By delinquency status: Current-29 days past due (DPD) and still accruing $ 325,001 130,566 24,969 18,946 499,482 30-89 DPD and still accruing 1,088 119 30 114 1,351 90+ DPD and still accruing 88 11 3 — 102 Nonaccrual loans 2,898 672 40 96 3,706 Total commercial loans (excluding PCI) 329,075 131,368 25,042 19,156 504,641 Total commercial PCI loans (carrying value) 177 164 22 — 363 Total commercial loans $ 329,252 131,532 25,064 19,156 505,004 December 31, 2016 By delinquency status: Current-29 DPD and still accruing $ 326,765 131,165 23,776 19,042 500,748 30-89 DPD and still accruing 594 222 40 132 988 90+ DPD and still accruing 28 36 — — 64 Nonaccrual loans 3,216 685 43 115 4,059 Total commercial loans (excluding PCI) 330,603 132,108 23,859 19,289 505,859 Total commercial PCI loans (carrying value) 237 383 57 — 677 Total commercial loans $ 330,840 132,491 23,916 19,289 506,536
Loans and Allowance for Credit Losses, Loans by Delinquency Status, Consumer	Table 5.10 provides the outstanding balances of our consumer portfolio by delinquency status. Table 5.10: Consumer Loans by Delinquency Status (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Credit card Automobile Other revolving credit and installment Total March 31, 2017 By delinquency status: Current-29 DPD $ 240,508 43,422 33,868 59,064 38,885 415,747 30-59 DPD 1,612 286 238 1,007 154 3,297 60-89 DPD 635 137 183 243 95 1,293 90-119 DPD 253 80 160 87 89 669 120-179 DPD 289 99 292 6 33 719 180+ DPD 1,534 275 1 1 29 1,840 Government insured/guaranteed loans (1) 14,529 — — — — 14,529 Total consumer loans (excluding PCI) 259,360 44,299 34,742 60,408 39,285 438,094 Total consumer PCI loans (carrying value) 15,273 34 — — — 15,307 Total consumer loans $ 274,633 44,333 34,742 60,408 39,285 453,401 December 31, 2016 By delinquency status: Current-29 DPD $ 239,061 45,238 35,773 60,572 39,833 420,477 30-59 DPD 1,904 296 275 1,262 177 3,914 60-89 DPD 700 160 200 330 111 1,501 90-119 DPD 307 102 169 116 93 787 120-179 DPD 323 108 279 5 30 745 180+ DPD 1,661 297 4 1 22 1,985 Government insured/guaranteed loans (1) 15,605 — — — — 15,605 Total consumer loans (excluding PCI) 259,561 46,201 36,700 62,286 40,266 445,014 Total consumer PCI loans (carrying value) 16,018 36 — — — 16,054 Total consumer loans $ 275,579 46,237 36,700 62,286 40,266 461,068 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. Loans insured/guaranteed by the FHA/VA and 90+ DPD totaled $9.2 billion at March 31, 2017 , compared with $10.1 billion at December 31, 2016 .
Loans and Allowance for Credit Losses, Loans by FICO Score, Consumer	Table 5.11 provides a breakdown of our consumer portfolio by FICO. The March 31, 2017 FICO scores for real estate 1-4 family first and junior lien mortgages reflect a new FICO score version we adopted in first quarter 2017 to monitor and manage those portfolios. In general the impact for us is a shift to higher scores, particularly to the 800+ level, as the new FICO score version utilizes a more refined approach that better distinguishes borrower credit risk. Most of the scored consumer portfolio has an updated FICO of 680 and above, reflecting a strong current borrower credit profile. FICO is not available for certain loan types, or may not be required if we deem it unnecessary due to strong collateral and other borrower attributes. Substantially all loans not requiring a FICO score are securities-based loans originated through retail brokerage, and totaled $7.9 billion at March 31, 2017 , and $8.0 billion at December 31, 2016 . Table 5.11: Consumer Loans by FICO (in millions) Real estate 1-4 family first mortgage (1) Real estate 1-4 family junior lien mortgage (1) Credit card Automobile Other revolving credit and installment (1) Total March 31, 2017 By FICO: < 600 $ 6,260 2,123 3,352 9,906 947 22,588 600-639 4,256 1,501 2,943 6,393 1,009 16,102 640-679 8,081 2,934 5,371 9,763 2,158 28,307 680-719 16,503 5,663 7,080 10,826 3,899 43,971 720-759 28,250 7,106 7,339 8,525 5,407 56,627 760-799 51,813 7,993 5,823 7,945 6,614 80,188 800+ 124,534 16,237 2,792 6,720 8,682 158,965 No FICO available 5,134 742 42 330 2,643 8,891 FICO not required — — — — 7,926 7,926 Government insured/guaranteed loans (2) 14,529 — — — — 14,529 Total consumer loans (excluding PCI) 259,360 44,299 34,742 60,408 39,285 438,094 Total consumer PCI loans (carrying value) 15,273 34 — — — 15,307 Total consumer loans $ 274,633 44,333 34,742 60,408 39,285 453,401 December 31, 2016 By FICO: < 600 $ 6,720 2,591 3,475 9,934 976 23,696 600-639 5,400 1,917 3,109 6,705 1,056 18,187 640-679 10,975 3,747 5,678 10,204 2,333 32,937 680-719 23,300 6,432 7,382 11,233 4,302 52,649 720-759 38,832 9,413 7,632 8,769 5,869 70,515 760-799 103,608 14,929 6,191 8,164 8,348 141,240 800+ 49,508 6,391 2,868 6,856 6,434 72,057 No FICO available 5,613 781 365 421 2,906 10,086 FICO not required — — — — 8,042 8,042 Government insured/guaranteed loans (2) 15,605 — — — — 15,605 Total consumer loans (excluding PCI) 259,561 46,201 36,700 62,286 40,266 445,014 Total consumer PCI loans (carrying value) 16,018 36 — — — 16,054 Total consumer loans $ 275,579 46,237 36,700 62,286 40,266 461,068 (1) The March 31, 2017 , amounts reflect updated FICO score version implemented in first quarter 2017. (2) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA.
Loans and Allowance for Credit Losses, Loans by Loan to Value Ratio, Consumer	Table 5.12 shows the most updated LTV and CLTV distribution of the real estate 1-4 family first and junior lien mortgage loan portfolios. We consider the trends in residential real estate markets as we monitor credit risk and establish our allowance for credit losses. In the event of a default, any loss should be limited to the portion of the loan amount in excess of the net realizable value of the underlying real estate collateral value. Certain loans do not have an LTV or CLTV due to industry data availability and portfolios acquired from or serviced by other institutions. Table 5.12: Consumer Loans by LTV/CLTV March 31, 2017 December 31, 2016 (in millions) Real estate 1-4 family first mortgage by LTV Real estate 1-4 family junior lien mortgage by CLTV Total Real estate 1-4 family first mortgage by LTV Real estate 1-4 family junior lien mortgage by CLTV Total By LTV/CLTV: 0-60% $ 121,653 16,024 137,677 121,430 16,464 137,894 60.01-80% 101,956 14,651 116,607 101,726 15,262 116,988 80.01-100% 16,506 8,312 24,818 15,795 8,765 24,560 100.01-120% (1) 2,459 3,339 5,798 2,644 3,589 6,233 > 120% (1) 1,025 1,482 2,507 1,066 1,613 2,679 No LTV/CLTV available 1,232 491 1,723 1,295 508 1,803 Government insured/guaranteed loans (2) 14,529 — 14,529 15,605 — 15,605 Total consumer loans (excluding PCI) 259,360 44,299 303,659 259,561 46,201 305,762 Total consumer PCI loans (carrying value) 15,273 34 15,307 16,018 36 16,054 Total consumer loans $ 274,633 44,333 318,966 275,579 46,237 321,816 (1) Reflects total loan balances with LTV/CLTV amounts in excess of 100%. In the event of default, the loss content would generally be limited to only the amount in excess of 100% LTV/CLTV. (2) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA.
Loans and Allowance for Credit Losses, Nonaccrual Loans	Table 5.13 provides loans on nonaccrual status. PCI loans are excluded from this table because they continue to earn interest from accretable yield, independent of performance in accordance with their contractual terms. Table 5.13: Nonaccrual Loans (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 2,898 3,216 Real estate mortgage 672 685 Real estate construction 40 43 Lease financing 96 115 Total commercial 3,706 4,059 Consumer: Real estate 1-4 family first mortgage (1) 4,743 4,962 Real estate 1-4 family junior lien mortgage 1,153 1,206 Automobile 101 106 Other revolving credit and installment 56 51 Total consumer 6,053 6,325 Total nonaccrual loans (excluding PCI) $ 9,759 10,384 (1) Includes MHFS of $145 million and $149 million at March 31, 2017 , and December 31, 2016 , respectively.
Loans and Allowance for Credit Losses, 90 days or More Past Due and Still Accruing Loans	Table 5.14 shows non-PCI loans 90 days or more past due and still accruing by class for loans not government insured/guaranteed. Table 5.14: Loans 90 Days or More Past Due and Still Accruing (in millions) Mar 31, 2017 Dec 31, 2016 Total (excluding PCI): $ 10,525 11,858 Less: FHA insured/guaranteed by the VA (1)(2) 9,585 10,883 Less: Student loans guaranteed under the Federal Family Education Loan Program (FFELP) (3) — 3 Total, not government insured/guaranteed $ 940 972 By segment and class, not government insured/guaranteed: Commercial: Commercial and industrial $ 88 28 Real estate mortgage 11 36 Real estate construction 3 — Total commercial 102 64 Consumer: Real estate 1-4 family first mortgage (2) 149 175 Real estate 1-4 family junior lien mortgage (2) 42 56 Credit card 453 452 Automobile 79 112 Other revolving credit and installment 115 113 Total consumer 838 908 Total, not government insured/guaranteed $ 940 972 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. (2) Includes mortgages held for sale 90 days or more past due and still accruing. (3) Represents loans whose repayments are largely guaranteed by agencies on behalf of the U.S. Department of Education under the FFELP.
Loans and Allowance for Credit Losses, Impaired Loans	Table 5.15 summarizes key information for impaired loans. Our impaired loans predominantly include loans on nonaccrual status in the commercial portfolio segment and loans modified in a TDR, whether on accrual or nonaccrual status. These impaired loans generally have estimated losses which are included in the allowance for credit losses. We have impaired loans with no allowance for credit losses when loss content has been previously recognized through charge-offs and we do not anticipate additional charge-offs or losses, or certain loans are currently performing in accordance with their terms and for which no loss has been estimated. Impaired loans exclude PCI loans. Table 5.15 includes trial modifications that totaled $261 million at March 31, 2017 , and $299 million at December 31, 2016 . For additional information on our impaired loans and allowance for credit losses, see Note 1 (Summary of Significant Accounting Policies) in our 2016 Form 10-K. Table 5.15: Impaired Loans Summary Recorded investment (in millions) Unpaid principal balance (1) Impaired loans Impaired loans with related allowance for credit losses Related allowance for credit losses March 31, 2017 Commercial: Commercial and industrial $ 4,833 3,508 3,158 571 Real estate mortgage 1,722 1,393 1,393 236 Real estate construction 134 73 73 14 Lease financing 149 102 102 38 Total commercial 6,838 5,076 4,726 859 Consumer: Real estate 1-4 family first mortgage 15,891 13,872 9,075 996 Real estate 1-4 family junior lien mortgage 2,339 2,106 1,628 326 Credit card 308 308 308 107 Automobile 146 80 29 7 Other revolving credit and installment 117 109 99 18 Total consumer (2) 18,801 16,475 11,139 1,454 Total impaired loans (excluding PCI) $ 25,639 21,551 15,865 2,313 December 31, 2016 Commercial: Commercial and industrial $ 5,058 3,742 3,418 675 Real estate mortgage 1,777 1,418 1,396 280 Real estate construction 167 93 93 22 Lease financing 146 119 119 23 Total commercial 7,148 5,372 5,026 1,000 Consumer: Real estate 1-4 family first mortgage 16,438 14,362 9,475 1,117 Real estate 1-4 family junior lien mortgage 2,399 2,156 1,681 350 Credit card 300 300 300 104 Automobile 153 85 31 5 Other revolving credit and installment 109 102 91 17 Total consumer (2) 19,399 17,005 11,578 1,593 Total impaired loans (excluding PCI) $ 26,547 22,377 16,604 2,593 (1) Excludes the unpaid principal balance for loans that have been fully charged off or otherwise have zero recorded investment. (2) Includes the recorded investment of $1.5 billion at both March 31, 2017 and December 31, 2016 , of government insured/guaranteed loans that are predominantly insured by the FHA or guaranteed by the VA and generally do not have an allowance. Impaired loans may also have limited, if any, allowance when the recorded investment of the loan approximates estimated net realizable value as a result of charge-offs prior to a TDR modification.
Loans and Allowance for Credit Losses, Average Recorded Investment in Impaired Loans	Table 5.16 provides the average recorded investment in impaired loans and the amount of interest income recognized on impaired loans by portfolio segment and class. Table 5.16: Average Recorded Investment in Impaired Loans Quarter ended March 31, 2017 2016 (in millions) Average recorded investment Recognized interest income Average recorded investment Recognized interest income Commercial: Commercial and industrial $ 3,675 33 2,766 19 Real estate mortgage 1,394 27 1,772 32 Real estate construction 84 1 130 2 Lease financing 119 — 75 — Total commercial 5,272 61 4,743 53 Consumer: Real estate 1-4 family first mortgage 14,132 190 16,911 221 Real estate 1-4 family junior lien mortgage 2,131 31 2,382 34 Credit card 302 8 297 9 Automobile 83 3 101 3 Other revolving credit and installment 106 2 82 1 Total consumer 16,754 234 19,773 268 Total impaired loans (excluding PCI) $ 22,026 295 24,516 321 Interest income: Cash basis of accounting $ 78 95 Other (1) 217 226 Total interest income $ 295 321 (1) Includes interest recognized on accruing TDRs, interest recognized related to certain impaired loans which have an allowance calculated using discounting, and amortization of purchase accounting adjustments related to certain impaired loans.
Loans and Allowance for Credit Losses, Troubled Debt Restructurings, Modification by Type	Table 5.17 summarizes our TDR modifications for the periods presented by primary modification type and includes the financial effects of these modifications. For those loans that modify more than once, the table reflects each modification that occurred during the period. Loans that both modify and pay off within the period, as well as changes in recorded investment during the period for loans modified in prior periods, are not included in the table. Table 5.17: TDR Modifications Primary modification type (1) Financial effects of modifications (in millions) Principal (2) Interest rate reduction Other concessions (3) Total Charge- offs (4) Weighted average interest rate reduction Recorded investment related to interest rate reduction (5) Quarter ended March 31, 2017 Commercial: Commercial and industrial $ — 6 928 934 65 0.82 % $ 6 Real estate mortgage — 14 181 195 — 1.00 14 Real estate construction — — 3 3 — 2.00 — Lease financing — — 3 3 — — — Total commercial — 20 1,115 1,135 65 0.95 20 Consumer: Real estate 1-4 family first mortgage 74 72 291 437 9 2.60 103 Real estate 1-4 family junior lien mortgage 13 21 23 57 6 2.95 24 Credit card — 57 — 57 — 12.22 57 Automobile 1 3 12 16 7 6.42 3 Other revolving credit and installment — 11 3 14 — 7.29 11 Trial modifications (6) — — (17 ) (17 ) — — — Total consumer 88 164 312 564 22 5.72 198 Total $ 88 184 1,427 1,699 87 5.27 % $ 218 Quarter ended March 31, 2016 Commercial: Commercial and industrial $ 42 78 632 752 106 1.89 % $ 78 Real estate mortgage — 24 159 183 — 1.13 24 Real estate construction — — 44 44 — — — Lease financing — — 4 4 — — — Total commercial 42 102 839 983 106 1.71 102 Consumer: Real estate 1-4 family first mortgage 96 65 450 611 13 2.81 119 Real estate 1-4 family junior lien mortgage 6 29 27 62 10 2.92 34 Credit card — 44 — 44 — 11.94 44 Automobile — 4 15 19 8 6.54 4 Other revolving credit and installment — 8 3 11 1 6.10 8 Trial modifications (6) — — 15 15 — — — Total consumer 102 150 510 762 32 4.94 209 Total $ 144 252 1,349 1,745 138 3.88 % $ 311 (1) Amounts represent the recorded investment in loans after recognizing the effects of the TDR, if any. TDRs may have multiple types of concessions, but are presented only once in the first modification type based on the order presented in the table above. The reported amounts include loans remodified of $657 million and $348 million , for quarters ended March 31, 2017 and 2016 , respectively. (2) Principal modifications include principal forgiveness at the time of the modification, contingent principal forgiveness granted over the life of the loan based on borrower performance, and principal that has been legally separated and deferred to the end of the loan, with a zero percent contractual interest rate. (3) Other concessions include loans discharged in bankruptcy, loan renewals, term extensions and other interest and noninterest adjustments, but exclude modifications that also forgive principal and/or reduce the contractual interest rate. (4) Charge-offs include write-downs of the investment in the loan in the period it is contractually modified. The amount of charge-off will differ from the modification terms if the loan has been charged down prior to the modification based on our policies. In addition, there may be cases where we have a charge-off/down with no legal principal modification. Modifications resulted in legally forgiving principal (actual, contingent or deferred) of $9 million and $19 million for the quarters ended March 31, 2017 and 2016 , respectively. (5) Reflects the effect of reduced interest rates on loans with an interest rate concession as one of their concession types, which includes loans reported as a principal primary modification type that also have an interest rate concession. (6) Trial modifications are granted a delay in payments due under the original terms during the trial payment period. However, these loans continue to advance through delinquency status and accrue interest according to their original terms. Any subsequent permanent modification generally includes interest rate related concessions; however, the exact concession type and resulting financial effect are usually not known until the loan is permanently modified. Trial modifications for the period are presented net of previously reported trial modifications that became permanent in the current period.
Loans and Allowance for Credit Losses, Troubled Debt Restructuring, Current Defaults	Table 5.18 summarizes permanent modification TDRs that have defaulted in the current period within 12 months of their permanent modification date. We are reporting these defaulted TDRs based on a payment default definition of 90 days past due for the commercial portfolio segment and 60 days past due for the consumer portfolio segment. Table 5.18: Defaulted TDRs Recorded investment of defaults Quarter ended March 31, (in millions) 2017 2016 Commercial: Commercial and industrial $ 62 25 Real estate mortgage 21 20 Real estate construction — 2 Total commercial 83 47 Consumer: Real estate 1-4 family first mortgage 25 31 Real estate 1-4 family junior lien mortgage 4 5 Credit card 15 13 Automobile 3 3 Other revolving credit and installment 1 1 Total consumer 48 53 Total $ 131 100
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans, Loans Outstanding	Table 5.19 presents PCI loans net of any remaining purchase accounting adjustments. Real estate 1-4 family first mortgage PCI loans are predominantly Pick-a-Pay loans. Table 5.19: PCI Loans (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 177 237 Real estate mortgage 164 383 Real estate construction 22 57 Total commercial 363 677 Consumer: Real estate 1-4 family first mortgage 15,273 16,018 Real estate 1-4 family junior lien mortgage 34 36 Total consumer 15,307 16,054 Total PCI loans (carrying value) $ 15,670 16,731 Total PCI loans (unpaid principal balance) $ 22,855 24,136
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans, Accretable Yield	The change in the accretable yield related to PCI loans since the merger with Wachovia is presented in Table 5.20 . Changes during first quarter 2017 reflect an expectation, as a result of our quarterly evaluation of PCI cash flows, that prepayment of modified Pick-a-Pay loans will increase over their estimated weighted-average life and that expected loss has decreased as a result of reduced loan to value ratios and sustained higher housing prices. Table 5.20: Change in Accretable Yield (in millions) Quarter ended March 31, 2017 2009-2016 Balance, beginning of period $ 11,216 10,447 Change in accretable yield due to acquisitions 2 159 Accretion into interest income (1) (357 ) (15,577 ) Accretion into noninterest income due to sales (2) (25 ) (467 ) Reclassification from nonaccretable difference for loans with improving credit-related cash flows 406 10,955 Changes in expected cash flows that do not affect nonaccretable difference (3) (927 ) 5,699 Balance, end of period $ 10,315 11,216 (1) Includes accretable yield released as a result of settlements with borrowers, which is included in interest income. (2) Includes accretable yield released as a result of sales to third parties, which is included in noninterest income. (3) Represents changes in cash flows expected to be collected due to the impact of modifications, changes in prepayment assumptions, changes in interest rates on variable rate PCI loans and sales to third parties.
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans by Credit Quality Indicator	Table 5.21 provides a breakdown of commercial PCI loans by risk category. Table 5.21: Commercial PCI Loans by Risk Category (in millions) Commercial and industrial Real estate mortgage Real estate construction Total March 31, 2017 By risk category: Pass $ 21 129 14 164 Criticized 156 35 8 199 Total commercial PCI loans $ 177 164 22 363 December 31, 2016 By risk category: Pass $ 92 263 47 402 Criticized 145 120 10 275 Total commercial PCI loans $ 237 383 57 677
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans by Delinquency Status, Commercial	Table 5.22 provides past due information for commercial PCI loans. Table 5.22: Commercial PCI Loans by Delinquency Status (in millions) Commercial and industrial Real estate mortgage Real estate construction Total March 31, 2017 By delinquency status: Current-29 DPD and still accruing $ 175 147 14 336 30-89 DPD and still accruing 2 — — 2 90+ DPD and still accruing — 17 8 25 Total commercial PCI loans $ 177 164 22 363 December 31, 2016 By delinquency status: Current-29 DPD and still accruing $ 235 353 48 636 30-89 DPD and still accruing 2 10 — 12 90+ DPD and still accruing — 20 9 29 Total commercial PCI loans $ 237 383 57 677
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans by Delinquency Status, Consumer	Table 5.23 provides the delinquency status of consumer PCI loans. Table 5.23: Consumer PCI Loans by Delinquency Status March 31, 2017 December 31, 2016 (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Total Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Total By delinquency status: Current-29 DPD and still accruing $ 15,851 167 16,018 16,095 171 16,266 30-59 DPD and still accruing 1,276 6 1,282 1,488 7 1,495 60-89 DPD and still accruing 572 2 574 668 2 670 90-119 DPD and still accruing 185 1 186 233 2 235 120-179 DPD and still accruing 209 1 210 238 2 240 180+ DPD and still accruing 1,884 7 1,891 2,081 8 2,089 Total consumer PCI loans (adjusted unpaid principal balance) $ 19,977 184 20,161 20,803 192 20,995 Total consumer PCI loans (carrying value) $ 15,273 34 15,307 16,018 36 16,054
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans by FICO Score, Consumer	Table 5.24 provides FICO scores for consumer PCI loans. Table 5.24: Consumer PCI Loans by FICO March 31, 2017 (1) December 31, 2016 (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Total Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Total By FICO: < 600 $ 5,022 46 5,068 4,292 46 4,338 600-639 2,703 24 2,727 3,001 26 3,027 640-679 3,075 34 3,109 3,972 35 4,007 680-719 2,653 34 2,687 3,170 37 3,207 720-759 1,956 24 1,980 1,767 24 1,791 760-799 952 12 964 962 15 977 800+ 457 7 464 254 4 258 No FICO available 3,159 3 3,162 3,385 5 3,390 Total consumer PCI loans (adjusted unpaid principal balance) $ 19,977 184 20,161 20,803 192 20,995 Total consumer PCI loans (carrying value) $ 15,273 34 15,307 16,018 36 16,054 (1) March 31, 2017 amounts reflect updated FICO score version implemented in first quarter 2017.
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans by Loan to Value Ratio, Consumer	Table 5.25 shows the distribution of consumer PCI loans by LTV for real estate 1-4 family first mortgages and by CLTV for real estate 1-4 family junior lien mortgages. Table 5.25: Consumer PCI Loans by LTV/CLTV March 31, 2017 December 31, 2016 (in millions) Real estate 1-4 family first mortgage by LTV Real estate 1-4 family junior lien mortgage by CLTV Total Real estate 1-4 family first mortgage by LTV Real estate 1-4 family junior lien mortgage by CLTV Total By LTV/CLTV: 0-60% $ 7,710 40 7,750 7,513 38 7,551 60.01-80% 8,490 74 8,564 9,000 76 9,076 80.01-100% 3,063 50 3,113 3,458 54 3,512 100.01-120% (1) 575 15 590 669 18 687 > 120% (1) 137 5 142 161 5 166 No LTV/CLTV available 2 — 2 2 1 3 Total consumer PCI loans (adjusted unpaid principal balance) $ 19,977 184 20,161 20,803 192 20,995 Total consumer PCI loans (carrying value) $ 15,273 34 15,307 16,018 36 16,054 (1) Reflects total loan balances with LTV/CLTV amounts in excess of 100%. In the event of default, the loss content would generally be limited to only the amount in excess of 100% LTV/CLTV.

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Other Assets [Abstract]
Components of Other Assets	Table 6.1 presents the components of other assets. Table 6.1: Other Assets (in millions) Mar 31, Dec 31, Nonmarketable equity investments: Cost method: Federal bank stock $ 6,185 6,407 Private equity 1,484 1,465 Auction rate securities 453 525 Total cost method 8,122 8,397 Equity method: LIHTC (1) 9,624 9,714 Private equity 3,620 3,635 Tax-advantaged renewable energy 2,013 2,054 New market tax credit and other 277 305 Total equity method 15,534 15,708 Fair value (2) 3,780 3,275 Total nonmarketable equity investments 27,436 27,380 Corporate/bank-owned life insurance 19,368 19,325 Accounts receivable (3) 31,570 31,056 Interest receivable 5,486 5,339 Core deposit intangibles 1,407 1,620 Customer relationship and other amortized intangibles 1,028 1,089 Foreclosed assets: Residential real estate: Government insured/guaranteed (3) 179 197 Non-government insured/guaranteed 345 378 Non-residential real estate 381 403 Operating lease assets 9,837 10,089 Due from customers on acceptances 191 196 Other 10,533 17,469 Total other assets $ 107,761 114,541 (1) Represents low income housing tax credit investments. (2) Represents nonmarketable equity investments for which we have elected the fair value option. See Note 13 (Fair Values of Assets and Liabilities) for additional information. (3) Certain government-guaranteed residential real estate mortgage loans upon foreclosure are included in Accounts receivable. Both principal and interest related to these foreclosed real estate assets are collectible because the loans were predominantly insured by the FHA or guaranteed by the VA. For more information on the classification of certain government-guaranteed mortgage loans upon foreclosure, see Note 1 (Summary of Significant Accounting Policies) to Financial Statements in our 2016 10-K.
Income Related To Nonmarketable Equity Investments [Table Text Block]	Table 6.2 presents income (expense) related to nonmarketable equity investments. Table 6.2: Nonmarketable Equity Investments Quarter ended March 31, (in millions) 2017 2016 Net realized gains from nonmarketable equity investments $ 287 185 All other (45 ) (186 ) Total $ 242 (1 )

Securitizations and Variable 35

Securitizations and Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2017
Securitizations and Variable Interest Entities [Abstract]
Balance Sheet Transactions With VIEs	Table 7.1 provides the classifications of assets and liabilities in our balance sheet for our transactions with VIEs. Table 7.1: Balance Sheet Transactions with VIEs (in millions) VIEs that we do not consolidate VIEs that we consolidate Transfers that we account for as secured borrowings Total March 31, 2017 Cash $ — 128 — 128 Federal funds sold, securities purchased under resale agreements and other short-term investments — 485 — 485 Trading assets 1,546 126 201 1,873 Investment securities (1) 7,221 — 650 7,871 Loans 6,527 13,056 127 19,710 Mortgage servicing rights 13,704 — — 13,704 Derivative assets 68 1 — 69 Other assets 10,148 361 10 10,519 Total assets 39,214 14,157 988 54,359 Short-term borrowings — — 783 783 Derivative liabilities 57 30 (2) — 87 Accrued expenses and other liabilities 287 103 (2) 2 392 Long-term debt 3,351 3,640 (2) 129 7,120 Total liabilities 3,695 3,773 914 8,382 Noncontrolling interests — 132 — 132 Net assets $ 35,519 10,252 74 45,845 December 31, 2016 Cash $ — 168 — 168 Federal funds sold, securities purchased under resale agreements and other short-term investments — 74 — 74 Trading assets 2,034 130 201 2,365 Investment securities (1) 8,530 — 786 9,316 Loans 6,698 12,589 138 19,425 Mortgage servicing rights 13,386 — — 13,386 Derivative assets 91 1 — 92 Other assets 10,281 452 11 10,744 Total assets 41,020 13,414 1,136 55,570 Short-term borrowings — — 905 905 Derivative liabilities 59 33 (2) — 92 Accrued expenses and other liabilities 306 107 (2) 2 415 Long-term debt 3,598 3,694 (2) 136 7,428 Total liabilities 3,963 3,834 1,043 8,840 Noncontrolling interests — 138 — 138 Net assets $ 37,057 9,442 93 46,592 (1) Excludes certain debt securities related to loans serviced for the Federal National Mortgage Association (FNMA), Federal Home Loan Mortgage Corporation (FHLMC) and GNMA. (2) There were no VIE liabilities with recourse to the general credit of Wells Fargo for the periods presented.
Unconsolidated VIEs	Table 7.2 provides a summary of unconsolidated VIEs with which we have significant continuing involvement, but we are not the primary beneficiary. We do not consider our continuing involvement in an unconsolidated VIE to be significant when it relates to third-party sponsored VIEs for which we were not the transferor (unless we are servicer and have other significant forms of involvement) or if we were the sponsor only or sponsor and servicer but do not have any other forms of significant involvement. Significant continuing involvement includes transactions where we were the sponsor or transferor and have other significant forms of involvement. Sponsorship includes transactions with unconsolidated VIEs where we solely or materially participated in the initial design or structuring of the entity or marketing of the transaction to investors. When we transfer assets to a VIE and account for the transfer as a sale, we are considered the transferor. We consider investments in securities (other than those held temporarily in trading), loans, guarantees, liquidity agreements, written options and servicing of collateral to be other forms of involvement that may be significant. We have excluded certain transactions with unconsolidated VIEs from the balances presented in the following table where we have determined that our continuing involvement is not significant due to the temporary nature and size of our variable interests, because we were not the transferor or because we were not involved in the design of the unconsolidated VIEs. We also exclude from the table secured borrowing transactions with unconsolidated VIEs (for information on these transactions, see the Transactions with Consolidated VIEs and Secured Borrowings section in this Note). Table 7.2: Unconsolidated VIEs Carrying value – asset (liability) (in millions) Total VIE assets Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Net assets March 31, 2017 Residential mortgage loan securitizations: Conforming (2) $ 1,176,819 2,539 12,750 — (226 ) 15,063 Other/nonconforming 17,459 824 101 — (2 ) 923 Commercial mortgage securitizations 152,603 3,115 853 62 (34 ) 3,996 Collateralized debt obligations: Debt securities 1,336 — — — (25 ) (25 ) Loans (3) 1,527 1,489 — — — 1,489 Asset-based finance structures 8,039 6,142 — — — 6,142 Tax credit structures 29,808 10,642 — — (3,351 ) 7,291 Collateralized loan obligations 49 10 — — — 10 Investment funds 220 52 — — — 52 Other (4) 1,720 629 — (51 ) — 578 Total $ 1,389,580 25,442 13,704 11 (3,638 ) 35,519 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,539 12,750 — 929 16,218 Other/nonconforming 824 101 — 2 927 Commercial mortgage securitizations 3,115 853 72 9,783 13,823 Collateralized debt obligations: Debt securities — — — 25 25 Loans (3) 1,489 — — — 1,489 Asset-based finance structures 6,142 — — 71 6,213 Tax credit structures 10,642 — — 941 11,583 Collateralized loan obligations 10 — — — 10 Investment funds 52 — — — 52 Other (4) 629 — 89 — 718 Total $ 25,442 13,704 161 11,751 51,058 (continued on following page) (continued from previous page) Carrying value – asset (liability) (in millions) Total VIE assets Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Net assets December 31, 2016 Residential mortgage loan securitizations: Conforming (2) $ 1,166,296 3,026 12,434 — (232 ) 15,228 Other/nonconforming 18,805 873 109 — (2 ) 980 Commercial mortgage securitizations 166,596 4,258 843 87 (35 ) 5,153 Collateralized debt obligations: Debt securities 1,472 — — — (25 ) (25 ) Loans (3) 1,545 1,507 — — — 1,507 Asset-based finance structures 9,152 6,522 — — — 6,522 Tax credit structures 29,713 10,669 — — (3,609 ) 7,060 Collateralized loan obligations 78 10 — — — 10 Investment funds 214 48 — — — 48 Other (4) 1,733 630 — (56 ) — 574 Total $ 1,395,604 27,543 13,386 31 (3,903 ) 37,057 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 3,026 12,434 — 979 16,439 Other/nonconforming 873 109 — 2 984 Commercial mortgage securitizations 4,258 843 94 9,566 14,761 Collateralized debt obligations: Debt securities — — — 25 25 Loans (3) 1,507 — — — 1,507 Asset-based finance structures 6,522 — — 72 6,594 Tax credit structures 10,669 — — 1,104 11,773 Collateralized loan obligations 10 — — — 10 Investment funds 48 — — — 48 Other (4) 630 — 93 — 723 Total $ 27,543 13,386 187 11,748 52,864 (1) Includes total equity interests of $10.1 billion and $10.3 billion at March 31, 2017 , and December 31, 2016 , respectively. Also includes debt interests in the form of both loans and securities. Excludes certain debt securities held related to loans serviced for FNMA, FHLMC and GNMA. (2) Excludes assets and related liabilities with a recorded carrying value on our balance sheet of $888 million and $1.2 billion at March 31, 2017 , and December 31, 2016 , respectively, for certain delinquent loans that are eligible for repurchase from GNMA loan securitizations. The recorded carrying value represents the amount that would be payable if the Company was to exercise the repurchase option. The carrying amounts are excluded from the table because the loans eligible for repurchase do not represent interests in the VIEs. (3) Represents senior loans to trusts that are collateralized by asset-backed securities. The trusts invest in senior tranches from a diversified pool of U.S. asset securitizations, of which all are current and 100% were rated as investment grade by the primary rating agencies at both March 31, 2017 , and December 31, 2016 . These senior loans are accounted for at amortized cost and are subject to the Company’s allowance and credit charge-off policies. (4) Includes structured financing and credit-linked note structures. Also contains investments in auction rate securities (ARS) issued by VIEs that we do not sponsor and, accordingly, are unable to obtain the total assets of the entity.
Cash Flows from Sales and Securitization Activity	Table 7.3 presents the cash flows for our transfers accounted for as sales. Table 7.3: Cash Flows From Sales and Securitization Activity 2017 2016 (in millions) Mortgage loans Other financial assets Mortgage loans Other financial assets Quarter ended March 31, Proceeds from securitizations and whole loan sales $ 58,257 21 45,016 50 Fees from servicing rights retained 854 — 881 — Cash flows from other interests held (1) 834 — 407 1 Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions 2 — 3 — Agency securitizations (3) 23 — 47 — Servicing advances, net of repayments (142 ) — (68 ) — (1) Cash flows from other interests held include principal and interest payments received on retained bonds and excess cash flows received on interest-only strips. (2) Consists of cash paid to repurchase loans from investors and cash paid to investors to reimburse them for losses on individual loans that are already liquidated. (3) Represent loans repurchased from GNMA, FNMA, and FHLMC under representation and warranty provisions included in our loan sales contracts. First quarter 2017 and 2016 exclude $ 2.3 billion and $2.9 billion , respectively, in delinquent insured/guaranteed loans that we service and have exercised our option to purchase out of GNMA pools. These loans are predominantly insured by the FHA or guaranteed by the VA.
Residential Mortgage Servicing Rights	Table 7.4 presents the key weighted-average assumptions we used to measure residential mortgage servicing rights at the date of securitization. Table 7.4: Residential Mortgage Servicing Rights Residential mortgage servicing rights 2017 2016 Quarter ended March 31, Prepayment speed (1) 10.3 % 13.0 Discount rate 6.8 6.8 Cost to service ($ per loan) (2) $ 134 146 (1) The prepayment speed assumption for residential mortgage servicing rights includes a blend of prepayment speeds and default rates. Prepayment speed assumptions are influenced by mortgage interest rate inputs as well as our estimation of drivers of borrower behavior. (2) Includes costs to service and unreimbursed foreclosure costs, which can vary period to period depending on the mix of modified government-guaranteed loans sold to GNMA.
Retained Interests from Unconsolidated VIEs	Table 7.5 provides key economic assumptions and the sensitivity of the current fair value of residential mortgage servicing rights and other interests held to immediate adverse changes in those assumptions. “Other interests held” relate to residential and commercial mortgage loan securitizations. Residential mortgage-backed securities retained in securitizations issued through GSEs, such as FNMA, FHLMC and GNMA, are excluded from the table because these securities have a remote risk of credit loss due to the GSE guarantee. These securities also have economic characteristics similar to GSE mortgage-backed securities that we purchase, which are not included in the table. Subordinated interests include only those bonds whose credit rating was below AAA by a major rating agency at issuance. Senior interests include only those bonds whose credit rating was AAA by a major rating agency at issuance. The information presented excludes trading positions held in inventory. Table 7.5: Retained Interests from Unconsolidated VIEs Other interests held Residential mortgage servicing rights (1) Interest-only strips Consumer Commercial (2) ($ in millions, except cost to service amounts) Subordinated bonds Subordinated bonds Senior bonds Fair value of interests held at March 31, 2017 $ 13,208 26 — 346 545 Expected weighted-average life (in years) 6.4 3.9 0.0 4.5 5.5 Key economic assumptions: Prepayment speed assumption (3) 10.2 % 17.2 — Decrease in fair value from: 10% adverse change $ 570 1 — 25% adverse change 1,353 2 — Discount rate assumption 6.9 % 13.6 — 4.3 2.9 Decrease in fair value from: 100 basis point increase $ 658 1 — 12 24 200 basis point increase 1,257 1 — 23 47 Cost to service assumption ($ per loan) 150 Decrease in fair value from: 10% adverse change 498 25% adverse change 1,246 Credit loss assumption — % 3.4 — Decrease in fair value from: 10% higher losses $ — — — 25% higher losses — — — Fair value of interests held at December 31, 2016 $ 12,959 28 1 249 552 Expected weighted-average life (in years) 6.3 3.9 8.3 3.1 5.1 Key economic assumptions: Prepayment speed assumption (3) 10.3 % 17.4 13.5 Decrease in fair value from: 10% adverse change $ 583 1 — 25% adverse change 1,385 2 — Discount rate assumption 6.8 % 13.3 10.7 5.2 2.7 Decrease in fair value from: 100 basis point increase $ 649 1 — 7 23 200 basis point increase 1,239 1 — 12 45 Cost to service assumption ($ per loan) 155 Decrease in fair value from: 10% adverse change 515 25% adverse change 1,282 Credit loss assumption 3.0 % 4.7 — Decrease in fair value from: 10% higher losses $ — — — 25% higher losses — — — (1) See narrative following this table for a discussion of commercial mortgage servicing rights. (2) Prepayment speed assumptions do not significantly impact the value of commercial mortgage securitization bonds as the underlying commercial mortgage loans experience significantly lower prepayments due to certain contractual restrictions, impacting the borrower’s ability to prepay the mortgage. (3) The prepayment speed assumption for residential mortgage servicing rights includes a blend of prepayment speeds and default rates. Prepayment speed assumptions are influenced by mortgage interest rate inputs as well as our estimation of drivers of borrower behavior.
Off-Balance Sheet Loans Sold Or Securitized	Table 7.6 presents information about the principal balances of off-balance sheet loans that were sold or securitized, including residential mortgage loans sold to FNMA, FHLMC, GNMA and other investors, for which we have some form of continuing involvement (including servicer). Delinquent loans include loans 90 days or more past due and loans in bankruptcy, regardless of delinquency status. For loans sold or securitized where servicing is our only form of continuing involvement, we would only experience a loss if we were required to repurchase a delinquent loan or foreclosed asset due to a breach in representations and warranties associated with our loan sale or servicing contracts. Table 7.6: Off-Balance Sheet Loans Sold or Securitized Net charge-offs Total loans Delinquent loans and foreclosed assets (1) Quarter ended Mar 31, (in millions) Mar 31, 2017 Dec 31, 2016 Mar 31, 2017 Dec 31, 2016 2017 2016 Commercial: Real estate mortgage $ 100,695 106,745 3,076 3,325 295 83 Total commercial 100,695 106,745 3,076 3,325 295 83 Consumer: Real estate 1-4 family first mortgage 1,162,112 1,160,191 15,202 16,453 200 287 Total consumer 1,162,112 1,160,191 15,202 16,453 200 287 Total off-balance sheet sold or securitized loans (2) $ 1,262,807 1,266,936 18,278 19,778 495 370 (1) Includes $1.5 billion and $1.7 billion of commercial foreclosed assets and $1.6 billion and $1.8 billion of consumer foreclosed assets at March 31, 2017 , and December 31, 2016 , respectively. (2) At March 31, 2017 , and December 31, 2016 , the table includes total loans of $1.2 trillion at both dates, delinquent loans of $9.5 billion and $9.8 billion , and foreclosed assets of $1.2 billion and $1.3 billion , respectively, for FNMA, FHLMC and GNMA. Net charge-offs exclude loans sold to FNMA, FHLMC and GNMA as we do not service or manage the underlying real estate upon foreclosure and, as such, do not have access to net charge-off information.
Transactions With Consolidated VIEs And Secured Borrowings	Table 7.7 presents a summary of financial assets and liabilities for asset transfers accounted for as secured borrowings and involvements with consolidated VIEs. “Assets” are presented using GAAP measurement methods, which may include fair value, credit impairment or other adjustments, and therefore in some instances will differ from “Total VIE assets.” For VIEs that obtain exposure synthetically through derivative instruments, the remaining notional amount of the derivative is included in “Total VIE assets.” On the consolidated balance sheet, we separately disclose the consolidated assets of certain VIEs that can only be used to settle the liabilities of those VIEs. Table 7.7: Transactions with Consolidated VIEs and Secured Borrowings Carrying value (in millions) Total VIE assets Assets Liabilities Noncontrolling interests Net assets March 31, 2017 Secured borrowings: Municipal tender option bond securitizations $ 1,328 861 (785 ) — 76 Residential mortgage securitizations 131 127 (129 ) — (2 ) Total secured borrowings 1,459 988 (914 ) — 74 Consolidated VIEs: Commercial and industrial loans and leases 9,504 9,306 (2,812 ) (12 ) 6,482 Nonconforming residential mortgage loan securitizations 3,189 2,812 (950 ) — 1,862 Commercial real estate loans 1,747 1,747 — — 1,747 Structured asset finance 22 11 (8 ) — 3 Investment funds 147 147 (2 ) (69 ) 76 Other 157 134 (1 ) (51 ) 82 Total consolidated VIEs 14,766 14,157 (3,773 ) (132 ) 10,252 Total secured borrowings and consolidated VIEs $ 16,225 15,145 (4,687 ) (132 ) 10,326 December 31, 2016 Secured borrowings: Municipal tender option bond securitizations $ 1,473 998 (907 ) — 91 Residential mortgage securitizations 139 138 (136 ) — 2 Total secured borrowings 1,612 1,136 (1,043 ) — 93 Consolidated VIEs: Commercial and industrial loans and leases 8,821 8,623 (2,819 ) (14 ) 5,790 Nonconforming residential mortgage loan securitizations 3,349 2,974 (1,003 ) — 1,971 Commercial real estate loans 1,516 1,516 — — 1,516 Structured asset finance 23 13 (9 ) — 4 Investment funds 142 142 (2 ) (67 ) 73 Other 166 146 (1 ) (57 ) 88 Total consolidated VIEs 14,017 13,414 (3,834 ) (138 ) 9,442 Total secured borrowings and consolidated VIEs $ 15,629 14,550 (4,877 ) (138 ) 9,535

Mortgage Banking Activities (Ta

Mortgage Banking Activities (Tables)	3 Months Ended
	Mar. 31, 2017
Mortgage Banking Activities [Abstract]
Analysis of Changes in Fair Value MSRs	Table 8.1 presents the changes in MSRs measured using the fair value method. Table 8.1: Analysis of Changes in Fair Value MSRs Quarter ended March 31, (in millions) 2017 2016 Fair value, beginning of period $ 12,959 12,415 Servicing from securitizations or asset transfers (1) 583 366 Sales and other (2) (47 ) — Net additions 536 366 Changes in fair value: Due to changes in valuation model inputs or assumptions: Mortgage interest rates (3) 152 (1,084 ) Servicing and foreclosure costs (4) 27 27 Prepayment estimates and other (5) (5 ) 100 Net changes in valuation model inputs or assumptions 174 (957 ) Changes due to collection/realization of expected cash flows over time (461 ) (491 ) Total changes in fair value (287 ) (1,448 ) Fair value, end of period $ 13,208 11,333 (1) Includes impacts associated with exercising our right to repurchase delinquent loans from GNMA loan securitization pools. (2) Includes sales and transfers of MSRs, which can result in an increase of total reported MSRs if the sales or transfers are related to nonperforming loan portfolios. (3) Includes prepayment speed changes as well as other valuation changes due to changes in mortgage interest rates (such as changes in estimated interest earned on custodial deposit balances). (4) Includes costs to service and unreimbursed foreclosure costs. (5) Represents changes driven by other valuation model inputs or assumptions including prepayment speed estimation changes and other assumption updates. Prepayment speed estimation changes are influenced by observed changes in borrower behavior and other external factors that occur independent of interest rate changes.
Analysis of Changes in Amortized MSRs	Table 8.2 presents the changes in amortized MSRs. Table 8.2: Analysis of Changes in Amortized MSRs Quarter ended March 31, (in millions) 2017 2016 Balance, beginning of period $ 1,406 1,308 Purchases 18 21 Servicing from securitizations or asset transfers 45 97 Amortization (67 ) (67 ) Balance, end of period (1) $ 1,402 1,359 Fair value of amortized MSRs: Beginning of period $ 1,956 1,680 End of period 2,051 1,725 (1) Commercial amortized MSRs are evaluated for impairment purposes by the following risk strata: agency (GSEs) for multi-family properties and non-agency. There was no valuation allowance recorded for the periods presented on the commercial amortized MSRs.
Managed Servicing Portfolio	We present the components of our managed servicing portfolio in Table 8.3 at unpaid principal balance for loans serviced and subserviced for others and at book value for owned loans serviced. Table 8.3: Managed Servicing Portfolio (in billions) Mar 31, 2017 Dec 31, 2016 Residential mortgage servicing: Serviced for others $ 1,204 1,205 Owned loans serviced 335 347 Subserviced for others 4 8 Total residential servicing 1,543 1,560 Commercial mortgage servicing: Serviced for others 474 479 Owned loans serviced 132 132 Subserviced for others 7 8 Total commercial servicing 613 619 Total managed servicing portfolio $ 2,156 2,179 Total serviced for others $ 1,678 1,684 Ratio of MSRs to related loans serviced for others 0.87 % 0.85
Mortgage Banking Noninterest Income	Table 8.4 presents the components of mortgage banking noninterest income. Table 8.4: Mortgage Banking Noninterest Income Quarter ended March 31, (in millions) 2017 2016 Servicing income, net: Servicing fees: Contractually specified servicing fees $ 907 954 Late charges 48 48 Ancillary fees 50 61 Unreimbursed direct servicing costs (1) (123 ) (153 ) Net servicing fees 882 910 Changes in fair value of MSRs carried at fair value: Due to changes in valuation model inputs or assumptions (2) (A) 174 (957 ) Changes due to collection/realization of expected cash flows over time (461 ) (491 ) Total changes in fair value of MSRs carried at fair value (287 ) (1,448 ) Amortization (67 ) (67 ) Net derivative gains (losses) from economic hedges (3) (B) (72 ) 1,455 Total servicing income, net 456 850 Net gains on mortgage loan origination/sales activities 772 748 Total mortgage banking noninterest income $ 1,228 1,598 Market-related valuation changes to MSRs, net of hedge results (2)(3) (A)+(B) $ 102 498 (1) Includes costs associated with foreclosures, unreimbursed interest advances to investors, and other interest costs. (2) Refer to the analysis of changes in fair value MSRs presented in Table 8.1 in this Note for more detail. (3) Represents results from economic hedges used to hedge the risk of changes in fair value of MSRs. See Note 12 (Derivatives Not Designated as Hedging Instruments) for additional discussion and detail.
Analysis of Changes in Liability for Mortgage Loan Repurchase Losses	Table 8.5 summarizes the changes in our liability for mortgage loan repurchase losses. This liability is in “Accrued expenses and other liabilities” in our consolidated balance sheet and adjustments to the repurchase liability are recorded in net gains on mortgage loan origination/sales activities in “Mortgage banking” in our consolidated income statement. Because of the uncertainty in the various estimates underlying the mortgage repurchase liability, there is a range of losses in excess of the recorded mortgage repurchase liability that is reasonably possible. The estimate of the range of possible loss for representations and warranties does not represent a probable loss, and is based on currently available information, significant judgment, and a number of assumptions that are subject to change. The high end of this range of reasonably possible losses exceeded our recorded liability by $155 million at March 31, 2017 , and was determined based upon modifying the assumptions (particularly to assume significant changes in investor repurchase demand practices) used in our best estimate of probable loss to reflect what we believe to be the high end of reasonably possible adverse assumptions. Table 8.5: Analysis of Changes in Liability for Mortgage Loan Repurchase Losses Quarter ended March 31, (in millions) 2017 2016 Balance, beginning of period $ 229 378 Provision for repurchase losses: Loan sales 8 7 Change in estimate (1) (8 ) (19 ) Net additions (reductions) — (12 ) Losses (7 ) (11 ) Balance, end of period $ 222 355 (1) Results from changes in investor demand and mortgage insurer practices, credit deterioration and changes in the financial stability of correspondent lenders.

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Carrying Value of Intangible Assets And Accumulated Amortization	Table 9.1 presents the gross carrying value of intangible assets and accumulated amortization. Table 9.1: Intangible Assets March 31, 2017 December 31, 2016 (in millions) Gross carrying value Accumulated amortization Net carrying value Gross carrying value Accumulated amortization Net carrying value Amortized intangible assets (1): MSRs (2) $ 3,658 (2,256 ) 1,402 3,595 (2,189 ) 1,406 Core deposit intangibles 12,834 (11,427 ) 1,407 12,834 (11,214 ) 1,620 Customer relationship and other intangibles 3,945 (2,917 ) 1,028 3,928 (2,839 ) 1,089 Total amortized intangible assets $ 20,437 (16,600 ) 3,837 20,357 (16,242 ) 4,115 Unamortized intangible assets: MSRs (carried at fair value) (2) $ 13,208 12,959 Goodwill 26,666 26,693 Trademark 14 14 (1) Excludes fully amortized intangible assets. (2) See Note 8 (Mortgage Banking Activities) for additional information on MSRs.
Amortization Expense for Intangible Assets	Table 9.2 provides the current year and estimated future amortization expense for amortized intangible assets. We based our projections of amortization expense shown below on existing asset balances at March 31, 2017 . Future amortization expense may vary from these projections. Table 9.2: Amortization Expense for Intangible Assets (in millions) Amortized MSRs Core deposit intangibles Customer relationship and other intangibles (1) Total Three months ended March 31, 2017 (actual) $ 67 213 79 359 Estimate for the remainder of 2017 $ 190 638 230 1,058 Estimate for year ended December 31, 2018 218 769 300 1,287 2019 194 108 302 2020 178 89 267 2021 153 76 229 2022 134 63 197 (1) The three months ended March 31, 2017 balance includes $3 million for lease intangible amortization.
Allocation of Goodwill to Operating Segments	Table 9.3 shows the allocation of goodwill to our reportable operating segments. Table 9.3: Goodwill (in millions) Community Banking Wholesale Banking Wealth and Investment Management Consolidated Company December 31, 2015 $ 16,849 7,475 1,205 25,529 Reduction in goodwill related to divested businesses and other — (58 ) — (58 ) Goodwill from business combinations — 1,532 — 1,532 March 31, 2016 $ 16,849 8,949 1,205 27,003 December 31, 2016 $ 16,849 8,585 1,259 26,693 Reduction in goodwill related to divested businesses and other — (27 ) — (27 ) March 31, 2017 $ 16,849 8,558 1,259 26,666

Guarantees, Pledged Assets an38

Guarantees, Pledged Assets and Collateral (Tables)	3 Months Ended
	Mar. 31, 2017
Guarantees [Abstract]
Guarantees - Carrying Value and Maximum Exposure to Loss	Table 10.1 shows carrying value, maximum exposure to loss on our guarantees and the related non-investment grade amounts. Table 10.1: Guarantees – Carrying Value and Maximum Exposure to Loss Maximum exposure to loss (in millions) Carrying value of obligation (asset) Expires in one year or less Expires after one year through three years Expires after three years through five years Expires after five years Total Non- investment grade March 31, 2017 Standby letters of credit (1) $ 39 15,818 8,319 3,288 661 28,086 9,594 Securities lending and other indemnifications (2) — — — 1 793 794 2 Written put options (3) (129 ) 12,708 10,690 4,354 1,438 29,190 17,870 Loans and MHFS sold with recourse (4) 54 213 533 980 8,739 10,465 7,425 Factoring guarantees (5) — 766 — — — 766 766 Other guarantees 4 13 20 17 4,507 4,557 5 Total guarantees $ (32 ) 29,518 19,562 8,640 16,138 73,858 35,662 December 31, 2016 Standby letters of credit (1) $ 38 16,050 8,727 3,194 658 28,629 9,898 Securities lending and other indemnifications (2) — — — 1 1,166 1,167 2 Written put options (3) 37 10,427 10,805 4,573 1,216 27,021 15,915 Loans and MHFS sold with recourse (4) 55 84 637 947 8,592 10,260 7,228 Factoring guarantees (5) — 1,109 — — — 1,109 1,109 Other guarantees 6 19 21 17 3,580 3,637 15 Total guarantees $ 136 27,689 20,190 8,732 15,212 71,823 34,167 (1) Total maximum exposure to loss includes direct pay letters of credit (DPLCs) of $8.8 billion and $9.2 billion at March 31, 2017 , and December 31, 2016 , respectively. We issue DPLCs to provide credit enhancements for certain bond issuances. Beneficiaries (bond trustees) may draw upon these instruments to make scheduled principal and interest payments, redeem all outstanding bonds because a default event has occurred, or for other reasons as permitted by the agreement. We also originate multipurpose lending commitments under which borrowers have the option to draw on the facility in one of several forms, including as a standby letter of credit. Total maximum exposure to loss includes the portion of these facilities for which we have issued standby letters of credit under the commitments. (2) Includes indemnifications provided to certain third-party clearing agents. Outstanding customer obligations under these arrangements were $75 million and $175 million with related collateral of $718 million and $991 million at March 31, 2017 , and December 31, 2016 , respectively. Estimated maximum exposure to loss was $793 million at March 31, 2017 and $1.2 billion at December 31, 2016 . (3) Written put options, which are in the form of derivatives, are also included in the derivative disclosures in Note 12 (Derivatives). (4) Represent recourse provided, predominantly to the GSEs, on loans sold under various programs and arrangements. Under these arrangements, we repurchased $1 million of loans associated with these agreements in the first quarter 2017 , and $1 million in the same period of 2016 . (5) Consists of guarantees made under certain factoring arrangements to purchase trade receivables from third parties, generally upon their request, if receivable debtors default on their payment obligations.
Pledged Assets	Table 10.2 provides the total carrying amount of pledged assets by asset type and pledged off-balance sheet securities for securities financings. The table excludes pledged consolidated VIE assets of $14.2 billion and $13.4 billion at March 31, 2017 , and December 31, 2016 , respectively, which can only be used to settle the liabilities of those entities. The table also excludes $1.0 billion and $1.1 billion in assets pledged in transactions with VIE's accounted for as secured borrowings at March 31, 2017 , and December 31, 2016 , respectively. See Note 7 (Securitizations and Variable Interest Entities) for additional information on consolidated VIE assets and secured borrowings. Table 10.2: Pledged Assets (in millions) Mar 31, Dec 31, Trading assets and other (1) $ 93,849 84,603 Investment securities (2) 78,163 90,946 Mortgages held for sale and loans (3) 506,776 516,112 Total pledged assets $ 678,788 691,661 (1) Consists of trading assets of $31.1 billion and $33.2 billion at March 31, 2017 , and December 31, 2016 , respectively and off-balance sheet securities of $62.7 billion and $51.4 billion as of the same dates, respectively, that are pledged as collateral for repurchase agreements and other securities financings. Total trading assets and other includes $93.4 billion and $84.2 billion at March 31, 2017 , and December 31, 2016 , respectively that permit the secured parties to sell or repledge the collateral. (2) Includes carrying value of $4.8 billion and $6.2 billion (fair value of $4.7 billion and $ 6.2 billion ) in collateral for repurchase agreements at March 31, 2017 , and December 31, 2016 , respectively, which are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Also includes $101 million and $617 million in collateral pledged under repurchase agreements at March 31, 2017 , and December 31, 2016 , respectively, that permit the secured parties to sell or repledge the collateral. All other pledged securities are pursuant to agreements that do not permit the secured party to sell or repledge the collateral. (3) Includes mortgages held for sale of $9.7 billion and $15.8 billion at March 31, 2017 , and December 31, 2016 , respectively. Substantially all of the total mortgages held for sale and loans are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Amounts exclude $888 million and $1.2 billion at March 31, 2017 , and December 31, 2016 , respectively, of pledged loans recorded on our balance sheet representing certain delinquent loans that are eligible for repurchase from GNMA loan securitizations.
Offsetting - Resale and Repurchase Agreements	Table 10.3 presents resale and repurchase agreements subject to master repurchase agreements (MRA) and securities borrowing and lending agreements subject to master securities lending agreements (MSLA). We account for transactions subject to these agreements as collateralized financings, and those with a single counterparty are presented net on our balance sheet, provided certain criteria are met that permit balance sheet netting. Most transactions subject to these agreements do not meet those criteria and thus are not eligible for balance sheet netting. Collateral we pledged consists of non-cash instruments, such as securities or loans, and is not netted on the balance sheet against the related liability. Collateral we received includes securities or loans and is not recognized on our balance sheet. Collateral pledged or received may be increased or decreased over time to maintain certain contractual thresholds as the assets underlying each arrangement fluctuate in value. Generally, these agreements require collateral to exceed the asset or liability recognized on the balance sheet. The following table includes the amount of collateral pledged or received related to exposures subject to enforceable MRAs or MSLAs. While these agreements are typically over-collateralized, U.S. GAAP requires disclosure in this table to limit the reported amount of such collateral to the amount of the related recognized asset or liability for each counterparty. In addition to the amounts included in Table 10.3 , we also have balance sheet netting related to derivatives that is disclosed in Note 12 (Derivatives). Table 10.3: Offsetting – Resale and Repurchase Agreements (in millions) Mar 31, Dec 31, Assets: Resale and securities borrowing agreements Gross amounts recognized $ 110,061 91,123 Gross amounts offset in consolidated balance sheet (1) (20,529 ) (11,680 ) Net amounts in consolidated balance sheet (2) 89,532 79,443 Collateral not recognized in consolidated balance sheet (3) (88,755 ) (78,837 ) Net amount (4) $ 777 606 Liabilities: Repurchase and securities lending agreements Gross amounts recognized (5) $ 96,273 89,111 Gross amounts offset in consolidated balance sheet (1) (20,529 ) (11,680 ) Net amounts in consolidated balance sheet (6) 75,744 77,431 Collateral pledged but not netted in consolidated balance sheet (7) (75,505 ) (77,184 ) Net amount (8) $ 239 247 (1) Represents recognized amount of resale and repurchase agreements with counterparties subject to enforceable MRAs that have been offset in the consolidated balance sheet. (2) At March 31, 2017 , and December 31, 2016 , includes $68.3 billion and $58.1 billion , respectively, classified on our consolidated balance sheet in federal funds sold, securities purchased under resale agreements and other short-term investments and $21.2 billion and $21.3 billion , respectively, in loans. (3) Represents the fair value of collateral we have received under enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized asset due from each counterparty. At March 31, 2017 , and December 31, 2016 , we have received total collateral with a fair value of $120.8 billion and $102.3 billion , respectively, all of which, we have the right to sell or repledge. These amounts include securities we have sold or repledged to others with a fair value of $61.5 billion at March 31, 2017 , and $50.0 billion at December 31, 2016 . (4) Represents the amount of our exposure that is not collateralized and/or is not subject to an enforceable MRA or MSLA. (5) For additional information on underlying collateral and contractual maturities, see the "Repurchase and Securities Lending Agreements" section in this Note. (6) Amount is classified in short-term borrowings on our consolidated balance sheet. (7) Represents the fair value of collateral we have pledged, related to enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized liability owed to each counterparty. At March 31, 2017 , and December 31, 2016 , we have pledged total collateral with a fair value of $98.6 billion and $91.4 billion , respectively, of which, the counterparty does not have the right to sell or repledge $5.1 billion as of March 31, 2017 and $6.6 billion as of December 31, 2016 . (8) Represents the amount of our obligation that is not covered by pledged collateral and/or is not subject to an enforceable MRA or MSLA.
Underlying Collateral Types of Gross Obligations and Contractual Maturities of Gross Obligations	Table 10.4 provides the underlying collateral types of our gross obligations under repurchase and securities lending agreements. Table 10.4: Underlying Collateral Types of Gross Obligations (in millions) Mar 31, Dec 31, Repurchase agreements: Securities of U.S. Treasury and federal agencies $ 44,376 34,335 Securities of U.S. States and political subdivisions 106 81 Federal agency mortgage-backed securities 28,726 32,669 Non-agency mortgage-backed securities 1,800 2,167 Corporate debt securities 7,481 6,829 Asset-backed securities 2,370 3,010 Equity securities 1,530 1,309 Other 1,151 1,704 Total repurchases 87,540 82,104 Securities lending: Securities of U.S. Treasury and federal agencies 130 152 Federal agency mortgage-backed securities 240 104 Non-agency mortgage-backed securities — 1 Corporate debt securities 556 653 Equity securities (1) 7,807 6,097 Total securities lending 8,733 7,007 Total repurchases and securities lending $ 96,273 89,111 (1) Equity securities are generally exchange traded and either re-hypothecated under margin lending agreements or obtained through contemporaneous securities borrowing transactions with other counterparties. Table 10.5 provides the contractual maturities of our gross obligations under repurchase and securities lending agreements. Table 10.5: Contractual Maturities of Gross Obligations (in millions) Overnight/continuous Up to 30 days 30-90 days >90 days Total gross obligation March 31, 2017 Repurchase agreements $ 64,530 12,321 5,723 4,966 87,540 Securities lending 7,054 432 1,247 — 8,733 Total repurchases and securities lending (1) $ 71,584 12,753 6,970 4,966 96,273 December 31, 2016 Repurchase agreements $ 60,516 9,598 6,762 5,228 82,104 Securities lending 5,565 167 1,275 — 7,007 Total repurchases and securities lending (1) $ 66,081 9,765 8,037 5,228 89,111 (1) Securities lending is executed under agreements that allow either party to terminate the transaction without notice, while repurchase agreements have a term structure to them that technically matures at a point in time. The overnight/continuous repurchase agreements require election of both parties to roll the trade rather than the election to terminate the arrangement as in securities lending.

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional or Contractual Amounts and Fair Values of Derivatives	Table 12.1 presents the total notional or contractual amounts and fair values for our derivatives. Derivative transactions can be measured in terms of the notional amount, but this amount is not recorded on the balance sheet and is not, when viewed in isolation, a meaningful measure of the risk profile of the instruments. The notional amount is generally not exchanged but is used only as the basis on which interest and other payments are determined. Table 12.1: Notional or Contractual Amounts and Fair Values of Derivatives March 31, 2017 December 31, 2016 Notional or contractual amount Fair value Notional or contractual amount Fair value (in millions) Derivative assets Derivative liabilities Derivative Derivative Derivatives designated as hedging instruments Interest rate contracts (1) $ 243,374 5,910 2,876 235,222 6,587 2,710 Foreign exchange contracts (1) 27,692 540 2,556 25,861 673 2,779 Total derivatives designated as qualifying hedging instruments 6,450 5,432 7,260 5,489 Derivatives not designated as hedging instruments Economic hedges: Interest rate contracts (2) 222,692 547 548 228,051 1,098 1,441 Equity contracts 9,036 586 98 7,964 545 83 Foreign exchange contracts 17,308 130 142 20,435 626 165 Credit contracts – protection purchased 161 85 — 482 102 — Subtotal 1,348 788 2,371 1,689 Customer accommodation trading and other derivatives: Interest rate contracts 7,231,404 57,030 60,008 6,018,370 57,583 61,058 Commodity contracts 63,882 1,738 1,348 65,532 3,057 2,551 Equity contracts 174,984 5,670 6,712 151,675 4,813 6,029 Foreign exchange contracts 325,923 7,048 6,930 318,999 9,595 9,798 Credit contracts – protection sold 10,601 142 300 10,483 85 389 Credit contracts – protection purchased 19,652 296 184 19,964 365 138 Other contracts 977 — 36 961 — 47 Subtotal 71,924 75,518 75,498 80,010 Total derivatives not designated as hedging instruments 73,272 76,306 77,869 81,699 Total derivatives before netting 79,722 81,738 85,129 87,188 Netting (3) (67,158 ) (69,277 ) (70,631 ) (72,696 ) Total $ 12,564 12,461 14,498 14,492 (1) Notional amounts presented exclude $ 1.9 billion of interest rate contracts at both March 31, 2017 , and December 31, 2016 , for certain derivatives that are combined for designation as a hedge on a single instrument. The notional amount for foreign exchange contracts at March 31, 2017 , and December 31, 2016 , excludes $9.8 billion and $9.6 billion , respectively, for certain derivatives that are combined for designation as a hedge on a single instrument. (2) Includes economic hedge derivatives used to hedge the risk of changes in the fair value of residential MSRs, MHFS, loans, derivative loan commitments and other interests held. (3) Represents balance sheet netting of derivative asset and liability balances, related cash collateral and portfolio level counterparty valuation adjustments. See Table 12.2 for further information.
Gross Fair Values of Derivative Assets and Liabilities	Table 12.2 provides information on the gross fair values of derivative assets and liabilities, the balance sheet netting adjustments and the resulting net fair value amount recorded on our balance sheet, as well as the non-cash collateral associated with such arrangements. We execute substantially all of our derivative transactions under master netting arrangements and reflect all derivative balances and related cash collateral subject to enforceable master netting arrangements on a net basis within the balance sheet. The “Gross amounts recognized” column in the following table includes $70.5 billion and $75.5 billion of gross derivative assets and liabilities, respectively, at March 31, 2017 , and $74.4 billion and $78.4 billion , respectively, at December 31, 2016 , with counterparties subject to enforceable master netting arrangements that are carried on the balance sheet net of offsetting amounts. The remaining gross derivative assets and liabilities of $9.2 billion and $6.2 billion , respectively, at March 31, 2017 , and $10.7 billion and $8.7 billion , respectively, at December 31, 2016 , include those with counterparties subject to master netting arrangements for which we have not assessed the enforceability because they are with counterparties where we do not currently have positions to offset, those subject to master netting arrangements where we have not been able to confirm the enforceability and those not subject to master netting arrangements. As such, we do not net derivative balances or collateral within the balance sheet for these counterparties. We determine the balance sheet netting adjustments based on the terms specified within each master netting arrangement. We disclose the balance sheet netting amounts within the column titled “Gross amounts offset in consolidated balance sheet.” Balance sheet netting adjustments are determined at the counterparty level for which there may be multiple contract types. For disclosure purposes, we allocate these netting adjustments to the contract type for each counterparty proportionally based upon the “Gross amounts recognized” by counterparty. As a result, the net amounts disclosed by contract type may not represent the actual exposure upon settlement of the contracts. We do not net non-cash collateral that we receive and pledge on the balance sheet. For disclosure purposes, we present the fair value of this non-cash collateral in the column titled “Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)” within the table. We determine and allocate the Disclosure-only netting amounts in the same manner as balance sheet netting amounts. The “Net amounts” column within Table 12.2 represents the aggregate of our net exposure to each counterparty after considering the balance sheet and Disclosure-only netting adjustments. We manage derivative exposure by monitoring the credit risk associated with each counterparty using counterparty specific credit risk limits, using master netting arrangements and obtaining collateral. Derivative contracts executed in over-the-counter markets include bilateral contractual arrangements that are not cleared through a central clearing organization but are typically subject to master netting arrangements. The percentage of our bilateral derivative transactions outstanding at period end in such markets, based on gross fair value, is provided within the following table. Other derivative contracts executed in over-the-counter or exchange-traded markets are settled through a central clearing organization and are excluded from this percentage. In addition to the netting amounts included in the table, we also have balance sheet netting related to resale and repurchase agreements that are disclosed within Note 10 (Guarantees, Pledged Assets and Collateral). Table 12.2: Gross Fair Values of Derivative Assets and Liabilities (in millions) Gross amounts recognized Gross amounts offset in consolidated balance sheet (1) Net amounts in consolidated balance sheet Gross amounts not offset in consolidated balance sheet (Disclosure-only netting) (2) Net amounts Percent exchanged in over-the-counter market (3) March 31, 2017 Derivative assets Interest rate contracts $ 63,487 (56,813 ) 6,674 (355 ) 6,319 31 % Commodity contracts 1,738 (734 ) 1,004 (6 ) 998 87 Equity contracts 6,256 (3,123 ) 3,133 (328 ) 2,805 71 Foreign exchange contracts 7,718 (6,142 ) 1,576 (22 ) 1,554 96 Credit contracts – protection sold 142 (54 ) 88 — 88 19 Credit contracts – protection purchased 381 (292 ) 89 (1 ) 88 99 Total derivative assets $ 79,722 (67,158 ) 12,564 (712 ) 11,852 Derivative liabilities Interest rate contracts $ 63,432 (58,885 ) 4,547 (2,038 ) 2,509 27 % Commodity contracts 1,348 (378 ) 970 (33 ) 937 83 Equity contracts 6,810 (2,939 ) 3,871 (451 ) 3,420 83 Foreign exchange contracts 9,628 (6,813 ) 2,815 (783 ) 2,032 99 Credit contracts – protection sold 300 (252 ) 48 (40 ) 8 96 Credit contracts – protection purchased 184 (10 ) 174 (33 ) 141 14 Other contracts 36 — 36 — 36 100 Total derivative liabilities $ 81,738 (69,277 ) 12,461 (3,378 ) 9,083 December 31, 2016 Derivative assets Interest rate contracts $ 65,268 (59,880 ) 5,388 (987 ) 4,401 34 % Commodity contracts 3,057 (707 ) 2,350 (30 ) 2,320 74 Equity contracts 5,358 (3,018 ) 2,340 (365 ) 1,975 75 Foreign exchange contracts 10,894 (6,663 ) 4,231 (362 ) 3,869 97 Credit contracts – protection sold 85 (48 ) 37 — 37 61 Credit contracts – protection purchased 467 (315 ) 152 (1 ) 151 98 Total derivative assets $ 85,129 (70,631 ) 14,498 (1,745 ) 12,753 Derivative liabilities Interest rate contracts $ 65,209 (58,956 ) 6,253 (3,129 ) 3,124 30 % Commodity contracts 2,551 (402 ) 2,149 (37 ) 2,112 38 Equity contracts 6,112 (2,433 ) 3,679 (331 ) 3,348 85 Foreign exchange contracts 12,742 (10,572 ) 2,170 (251 ) 1,919 100 Credit contracts – protection sold 389 (295 ) 94 (44 ) 50 98 Credit contracts – protection purchased 138 (38 ) 100 (2 ) 98 50 Other contracts 47 — 47 — 47 100 Total derivative liabilities $ 87,188 (72,696 ) 14,492 (3,794 ) 10,698 (1) Represents amounts with counterparties subject to enforceable master netting arrangements that have been offset in the consolidated balance sheet, including related cash collateral and portfolio level counterparty valuation adjustments. Counterparty valuation adjustments were $288 million and $348 million related to derivative assets and $99 million and $114 million related to derivative liabilities at March 31, 2017 , and December 31, 2016 , respectively. Cash collateral totaled $3.7 billion and $6.0 billion , netted against derivative assets and liabilities, respectively, at March 31, 2017 , and $4.8 billion and $7.1 billion , respectively, at December 31, 2016 . (2) Represents non-cash collateral pledged and received against derivative assets and liabilities with the same counterparty that are subject to enforceable master netting arrangements. U.S. GAAP does not permit netting of such non-cash collateral balances in the consolidated balance sheet but requires disclosure of these amounts. (3) Represents derivatives executed in over-the-counter markets that are not settled through a central clearing organization. Over-the-counter percentages are calculated based on gross amounts recognized as of the respective balance sheet date. The remaining percentage represents derivatives settled through a central clearing organization, which are executed in either over-the-counter or exchange-traded markets.
Derivatives in Fair Value Hedging Relationships	Table 12.3 shows the net gains (losses) recognized in the income statement related to derivatives in fair value hedging relationships. Table 12.3: Derivatives in Fair Value Hedging Relationships Interest rate contracts hedging: Foreign exchange contracts hedging: Total net gains (losses) on fair value hedges (in millions) Available- for-sale securities Mortgages held for sale Long-term debt Available- for-sale securities Long-term debt Quarter ended March 31, 2017 Net interest income (expense) recognized on derivatives (1) $ (131 ) (2 ) 427 4 (33 ) 265 Gains (losses) recorded in noninterest income Recognized on derivatives 126 (1 ) (564 ) (42 ) 157 (324 ) Recognized on hedged item (141 ) — 540 44 (311 ) 132 Net recognized on fair value hedges (ineffective portion) $ (15 ) (1 ) (24 ) 2 (154 ) (192 ) Quarter ended March 31, 2016 Net interest income (expense) recognized on derivatives (1) $ (181 ) (2 ) 482 — 16 315 Gains (losses) recorded in noninterest income Recognized on derivatives (1,683 ) (37 ) 3,103 (66 ) 1,618 2,935 Recognized on hedged item 1,691 33 (2,807 ) 59 (1,402 ) (2,426 ) Net recognized on fair value hedges (ineffective portion) $ 8 (4 ) 296 (7 ) 216 509 (1) Includes $(1) million and $(4) million , respectively, for the quarters ended March 31, 2017 and 2016 , of the time value component recognized as net interest income (expense) on forward derivatives hedging foreign currency that were excluded from the assessment of hedge effectiveness.
Derivatives in Cash Flow Hedging Relationships	Table 12.4 shows the net gains (losses) recognized related to derivatives in cash flow hedging relationships. Table 12.4: Derivatives in Cash Flow Hedging Relationships Quarter ended March 31, (in millions) 2017 2016 Gains (losses) (pre tax) recognized in OCI on derivatives (133 ) 1,999 Gains (pre tax) reclassified from cumulative OCI into net income (1) 202 256 Gains (losses) (pre tax) recognized in noninterest income for hedge ineffectiveness (2) (3 ) 1 (1) See Note 17 (Other Comprehensive Income) for detail on components of net income. (2) None of the change in value of the derivatives was excluded from the assessment of hedge effectiveness.
Derivatives Not Designated as Hedging Instruments	Table 12.5 shows the net gains recognized in the income statement related to derivatives not designated as hedging instruments. Table 12.5: Derivatives Not Designated as Hedging Instruments Quarter ended March 31, (in millions) 2017 2016 Net gains (losses) recognized on economic hedges derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (1) (9 ) 865 Other (2) 6 (135 ) Equity contracts (3) (481 ) 83 Foreign exchange contracts (2) (93 ) (166 ) Credit contracts (2) 4 — Subtotal (4) (573 ) 647 Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (5) 193 465 Other (6) 45 (450 ) Commodity contracts (6) 60 53 Equity contracts (6) (1,109 ) 20 Foreign exchange contracts (6) 185 222 Credit contracts (6) (15 ) (16 ) Other (2) 12 (21 ) Subtotal (629 ) 273 Net gains (losses) recognized related to derivatives not designated as hedging instruments (1,202 ) 920 (1) Reflected in mortgage banking noninterest income including gains (losses) on the derivatives used as economic hedges of MSRs measured at fair value, interest rate lock commitments and mortgages held for sale. (2) Included in other noninterest income. (3) Included in net gains (losses) from equity investments and other noninterest income. (4) Includes hedging gains (losses) of $2 million and $(131) million for first quarter 2017 , and 2016 , respectively, which partially offset hedge accounting ineffectiveness. (5) Reflected in mortgage banking noninterest income including gains (losses) on interest rate lock commitments and net gains from trading activities in noninterest income. (6) Included in net gains from trading activities in noninterest income.
Sold and Purchased Credit Derivatives	Table 12.6 provides details of sold and purchased credit derivatives. Table 12.6: Sold and Purchased Credit Derivatives Notional amount (in millions) Fair value liability Protection sold (A) Protection sold – non- investment grade Protection purchased with identical underlyings (B) Net protection sold (A) - (B) Other protection purchased Range of maturities March 31, 2017 Credit default swaps on: Corporate bonds $ 15 3,306 1,645 2,577 729 1,024 2017 - 2026 Structured products 141 306 271 245 61 209 2020 - 2047 Credit protection on: Default swap index — 3,043 665 241 2,802 4,168 2017 - 2027 Commercial mortgage-backed securities index 126 499 — 461 38 66 2047 - 2058 Asset-backed securities index 17 44 — 40 4 5 2045 - 2046 Other 1 3,403 3,403 — 3,403 10,777 2017 - 2028 Total credit derivatives $ 300 10,601 5,984 3,564 7,037 16,249 December 31, 2016 Credit default swaps on: Corporate bonds $ 22 4,324 1,704 3,060 1,264 1,804 2017 - 2026 Structured products 193 405 333 295 110 79 2020 - 2047 Credit protection on: Default swap index — 1,515 257 139 1,376 3,668 2017 - 2021 Commercial mortgage-backed securities index 156 627 — 584 43 71 2047 - 2058 Asset-backed securities index 17 45 — 40 5 187 2045 - 2046 Other 1 3,567 3,568 — 3,567 10,519 2017 - 2047 Total credit derivatives $ 389 10,483 5,862 4,118 6,365 16,328

Fair Values of Assets and Lia40

Fair Values of Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value, Measurements from Brokers or Third Party Pricing Services	Table 13.1 . presents unadjusted fair value measurements provided by brokers or third-party pricing services by fair value hierarchy level. Fair value measurements obtained from brokers or third-party pricing services that we have adjusted to determine the fair value recorded in our financial statements are excluded from Table 13.1 . Table 13.1: Fair Value Measurements by Brokers or Third-Party Pricing Services Brokers Third-party pricing services (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 March 31, 2017 Trading assets $ — — — 648 55 — Available-for-sale securities: Securities of U.S. Treasury and federal agencies — — — 21,672 2,953 — Securities of U.S. states and political subdivisions — — — — 50,701 214 Mortgage-backed securities — 69 — — 170,540 89 Other debt securities (1) — 777 861 — 46,797 250 Total debt securities — 846 861 21,672 270,991 553 Total marketable equity securities — — — — 293 — Total available-for-sale securities — 846 861 21,672 271,284 553 Derivatives assets — — — 25 7 — Derivatives liabilities — — — (21 ) (2 ) — Other liabilities (2) — — — — — — December 31, 2016 Trading assets $ — — — 899 60 — Available-for-sale securities: Securities of U.S. Treasury and federal agencies — — — 22,870 2,949 — Securities of U.S. states and political subdivisions — — — — 49,837 208 Mortgage-backed securities — 171 — — 176,923 92 Other debt securities (1) — 450 968 — 49,162 54 Total debt securities — 621 968 22,870 278,871 354 Total marketable equity securities — — — — 358 — Total available-for-sale securities — 621 968 22,870 279,229 354 Derivatives assets — — — 22 — — Derivatives liabilities — — — (109 ) (1 ) — Other liabilities (2) — — — — — — (1) Includes corporate debt securities, collateralized loan and other debt obligations, asset-backed securities, and other debt securities.
Assets and Liabilities Recorded at Fair Value on a Recurring Basis	Table 13.2 presents the balances of assets and liabilities recorded at fair value on a recurring basis. Table 13.2: Fair Value on a Recurring Basis (in millions) Level 1 Level 2 Level 3 Netting Total March 31, 2017 Trading assets Securities of U.S. Treasury and federal agencies $ 12,369 3,436 — — 15,805 Securities of U.S. states and political subdivisions — 3,330 3 — 3,333 Collateralized loan obligations — 426 398 — 824 Corporate debt securities — 9,252 37 — 9,289 Mortgage-backed securities — 20,466 — — 20,466 Asset-backed securities — 794 — — 794 Equity securities 28,414 246 — — 28,660 Total trading securities (1) 40,783 37,950 438 — 79,171 Other trading assets — 1,129 26 — 1,155 Total trading assets 40,783 39,079 464 — 80,326 Securities of U.S. Treasury and federal agencies 21,672 2,953 — — 24,625 Securities of U.S. states and political subdivisions — 50,701 1,360 (2) — 52,061 Mortgage-backed securities: Federal agencies — 156,966 — — 156,966 Residential — 7,592 1 — 7,593 Commercial — 6,551 89 — 6,640 Total mortgage-backed securities — 171,109 90 — 171,199 Corporate debt securities 60 9,979 391 — 10,430 Collateralized loan and other debt obligations (3) — 33,045 964 (2) — 34,009 Asset-backed securities: Automobile loans and leases — 11 — — 11 Home equity loans — 319 — — 319 Other asset-backed securities — 4,905 845 (2) — 5,750 Total asset-backed securities — 5,235 845 — 6,080 Other debt securities — 1 — — 1 Total debt securities 21,732 273,023 3,650 — 298,405 Marketable equity securities: Perpetual preferred securities 190 292 — — 482 Other marketable equity securities 642 1 — — 643 Total marketable equity securities 832 293 — — 1,125 Total available-for-sale securities 22,564 273,316 3,650 — 299,530 Mortgages held for sale — 13,061 957 — 14,018 Loans — — 505 — 505 Mortgage servicing rights (residential) — — 13,208 — 13,208 Derivative assets: Interest rate contracts 28 63,205 254 — 63,487 Commodity contracts — 1,701 37 — 1,738 Equity contracts 1,808 3,215 1,233 — 6,256 Foreign exchange contracts 25 7,679 14 — 7,718 Credit contracts — 294 229 — 523 Netting — — — (67,158 ) (4) (67,158 ) Total derivative assets 1,861 76,094 1,767 (67,158 ) 12,564 Other assets – excluding nonmarketable equity investments at NAV — 40 3,740 — 3,780 Total assets included in the fair value hierarchy $ 65,208 401,590 24,291 (67,158 ) 423,931 Other assets – nonmarketable equity investments at NAV (5) — Total assets recorded at fair value $ 423,931 Derivative liabilities: Interest rate contracts $ (19 ) (63,377 ) (36 ) — (63,432 ) Commodity contracts — (1,330 ) (18 ) — (1,348 ) Equity contracts (1,164 ) (4,114 ) (1,532 ) — (6,810 ) Foreign exchange contracts (21 ) (9,596 ) (11 ) — (9,628 ) Credit contracts — (342 ) (142 ) — (484 ) Other derivative contracts — — (36 ) — (36 ) Netting — — — 69,277 (4) 69,277 Total derivative liabilities (1,204 ) (78,759 ) (1,775 ) 69,277 (12,461 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (12,164 ) (809 ) — — (12,973 ) Corporate debt securities — (4,712 ) — — (4,712 ) Equity securities (2,246 ) — — — (2,246 ) Other securities — (51 ) — — (51 ) Total short sale liabilities (14,410 ) (5,572 ) — — (19,982 ) Other liabilities — — (4 ) — (4 ) Total liabilities recorded at fair value $ (15,614 ) (84,331 ) (1,779 ) 69,277 (32,447 ) (1) Net gains (losses) from trading activities recognized in the income statement for the quarters ended March 31, 2017 and 2016 include $587 million and $572 million in net unrealized gains (losses) on trading securities held at March 31, 2017 and 2016 , respectively. (2) Balances consist of securities that are mostly investment grade based on ratings received from the ratings agencies or internal credit grades categorized as investment grade if external ratings are not available. The securities are classified as Level 3 due to limited market activity. (3) Includes collateralized debt obligations of $945 million . (4) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 12 (Derivatives) for additional information. (5) Consists of certain nonmarketable equity investments that are measured at fair value using NAV per share (or its equivalent) as a practical expedient and are excluded from the fair value hierarchy. (continued on following page) (continued from previous page) (in millions) Level 1 Level 2 Level 3 Netting Total December 31, 2016 Trading assets Securities of U.S. Treasury and federal agencies $ 14,950 2,710 — — 17,660 Securities of U.S. states and political subdivisions — 2,910 3 — 2,913 Collateralized loan obligations — 501 309 — 810 Corporate debt securities — 9,481 34 — 9,515 Mortgage-backed securities — 20,254 — — 20,254 Asset-backed securities — 1,128 — — 1,128 Equity securities 20,462 290 — — 20,752 Total trading securities (1) 35,412 37,274 346 — 73,032 Other trading assets — 1,337 28 — 1,365 Total trading assets 35,412 38,611 374 — 74,397 Securities of U.S. Treasury and federal agencies 22,870 2,949 — — 25,819 Securities of U.S. states and political subdivisions — 49,961 1,140 (2) — 51,101 Mortgage-backed securities: Federal agencies — 161,230 — — 161,230 Residential — 7,815 1 — 7,816 Commercial — 8,411 91 — 8,502 Total mortgage-backed securities — 177,456 92 — 177,548 Corporate debt securities 58 10,967 432 — 11,457 Collateralized loan and other debt obligations (3) — 34,141 879 (2) — 35,020 Asset-backed securities: Automobile loans and leases — 9 — — 9 Home equity loans — 327 — — 327 Other asset-backed securities — 4,909 962 (2) — 5,871 Total asset-backed securities — 5,245 962 — 6,207 Other debt securities — 1 — — 1 Total debt securities 22,928 280,720 3,505 — 307,153 Marketable equity securities: Perpetual preferred securities 112 357 — — 469 Other marketable equity securities 741 1 — — 742 Total marketable equity securities 853 358 — — 1,211 Total available-for-sale securities 23,781 281,078 3,505 — 308,364 Mortgages held for sale — 21,057 985 — 22,042 Loans — — 758 — 758 Mortgage servicing rights (residential) — — 12,959 — 12,959 Derivative assets: Interest rate contracts 44 64,986 238 — 65,268 Commodity contracts — 3,020 37 — 3,057 Equity contracts 1,314 2,997 1,047 — 5,358 Foreign exchange contracts 22 10,843 29 — 10,894 Credit contracts — 280 272 — 552 Netting — — — (70,631 ) (4) (70,631 ) Total derivative assets 1,380 82,126 1,623 (70,631 ) 14,498 Other assets – excluding nonmarketable equity investments at NAV — 16 3,259 — 3,275 Total assets included in the fair value hierarchy $ 60,573 422,888 23,463 (70,631 ) 436,293 Other assets – nonmarketable equity investments at NAV (5) — Total assets recorded at fair value $ 436,293 Derivative liabilities: Interest rate contracts $ (45 ) (65,047 ) (117 ) — (65,209 ) Commodity contracts — (2,537 ) (14 ) — (2,551 ) Equity contracts (919 ) (3,879 ) (1,314 ) — (6,112 ) Foreign exchange contracts (109 ) (12,616 ) (17 ) — (12,742 ) Credit contracts — (332 ) (195 ) — (527 ) Other derivative contracts — — (47 ) — (47 ) Netting — — — 72,696 (4) 72,696 Total derivative liabilities (1,073 ) (84,411 ) (1,704 ) 72,696 (14,492 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (9,722 ) (701 ) — — (10,423 ) Corporate debt securities — (4,063 ) — — (4,063 ) Equity securities (1,795 ) — — — (1,795 ) Other securities — (98 ) — — (98 ) Total short sale liabilities (11,517 ) (4,862 ) — — (16,379 ) Other liabilities — — (4 ) — (4 ) Total liabilities recorded at fair value $ (12,590 ) (89,273 ) (1,708 ) 72,696 (30,875 ) (1) Net gains (losses) from trading activities recognized in the income statement for the year ended December 31, 2016 , include $820 million in net unrealized gains (losses) on trading securities held at December 31, 2016 . (2) Balances consist of securities that are mostly investment grade based on ratings received from the ratings agencies or internal credit grades categorized as investment grade if external ratings are not available. The securities are classified as Level 3 due to limited market activity. (3) Includes collateralized debt obligations of $847 million . (4) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 12 (Derivatives) for additional information. (5) Consists of certain nonmarketable equity investments that are measured at fair value using NAV per share (or its equivalent) as a practical expedient and are excluded from the fair value hierarchy.
Fair Value, Transfers Between Fair Value Levels	Table 13.3: Transfers Between Fair Value Levels Transfers Between Fair Value Levels Level 1 Level 2 Level 3 (1) (in millions) In Out In Out In Out Total Quarter ended March 31, 2017 Trading assets $ — — 1 (3 ) 3 (1 ) — Available-for-sale securities — — 72 (5 ) 5 (72 ) — Mortgages held for sale — — 1 (42 ) 42 (1 ) — Net derivative assets and liabilities (2) — — 3 22 (22 ) (3 ) — Short sale liabilities — — — — — — — Total transfers $ — — 77 (28 ) 28 (77 ) — Quarter ended March 31, 2016 Trading assets $ 4 — 11 (4 ) — (11 ) — Available-for-sale securities — — — (80 ) 80 — — Mortgages held for sale — — 2 (29 ) 29 (2 ) — Net derivative assets and liabilities (2) — — 62 (25 ) 25 (62 ) — Short sale liabilities (1 ) — — 1 — — — Total transfers $ 3 — 75 (137 ) 134 (75 ) — (1) All transfers in and out of Level 3 are disclosed within the recurring Level 3 rollforward tables in this Note. (2) Includes transfers of net derivative assets and net derivative liabilities between levels due to changes in observable market data.
Fair Value, Assets and Liabilities Measured on Recurring Basis, Level 3 Reconciliation	The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2017 , are presented in Table 13.4 . Table 13.4: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Quarter ended March 31, 2017 Total net gains (losses) included in Purchases, sales, issuances and settlements, net (1) Net unrealized gains (losses) included in income related to assets and liabilities held at period end (in millions) Balance, beginning of period Net income Other compre- hensive income Transfers into Level 3 Transfers out of Level 3 Balance, end of period (2) Quarter ended March 31, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 3 — — — — — 3 — Collateralized loan obligations 309 4 — 85 — — 398 — Corporate debt securities 34 — — 1 3 (1 ) 37 — Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 346 4 — 86 3 (1 ) 438 — Other trading assets 28 (2 ) — — — — 26 (1 ) Total trading assets 374 2 — 86 3 (1 ) 464 (1 ) (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,140 — 2 285 5 (72 ) 1,360 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 91 (3 ) 4 (3 ) — — 89 (4 ) Total mortgage-backed securities 92 (3 ) 4 (3 ) — — 90 (4 ) Corporate debt securities 432 (14 ) 8 (35 ) — — 391 — Collateralized loan and other debt obligations 879 5 41 39 — — 964 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 962 — 2 (119 ) — — 845 — Total asset-backed securities 962 — 2 (119 ) — — 845 — Total debt securities 3,505 (12 ) 57 167 5 (72 ) 3,650 (4 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,505 (12 ) 57 167 5 (72 ) 3,650 (4 ) Mortgages held for sale 985 (9 ) — (60 ) 42 (1 ) 957 (11 ) (6) Loans 758 (6 ) — (247 ) — — 505 (5 ) (6) Mortgage servicing rights (residential) (7) 12,959 (287 ) — 536 — — 13,208 174 (6) Net derivative assets and liabilities: Interest rate contracts 121 209 — (112 ) — — 218 85 Commodity contracts 23 2 — (6 ) — — 19 7 Equity contracts (267 ) (44 ) — 37 (22 ) (3 ) (299 ) (57 ) Foreign exchange contracts 12 (9 ) — — — — 3 (5 ) Credit contracts 77 7 — 3 — — 87 (14 ) Other derivative contracts (47 ) 11 — — — — (36 ) 11 Total derivative contracts (81 ) 176 — (78 ) (22 ) (3 ) (8 ) 27 (8) Other assets 3,259 481 — — — — 3,740 485 (5) Short sale liabilities — — — — — — — — (3) Other liabilities (4 ) — — — — — (4 ) — (6) (1) See Table 13.5 for detail. (2) Represents only net gains (losses) that are due to changes in economic conditions and management’s estimates of fair value and excludes changes due to the collection/realization of cash flows over time. (3) Included in net gains (losses) from trading activities and other noninterest income in the income statement. (4) Included in net gains (losses) from debt securities in the income statement. (5) Included in net gains (losses) from equity investments in the income statement. (6) Included in mortgage banking and other noninterest income in the income statement. (7) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities). (8) Included in mortgage banking, trading activities, equity investments and other noninterest income in the income statement. (continued on following page) (continued from previous page) Table 13.5 presents gross purchases, sales, issuances and settlements related to the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2017 . Table 13.5: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2017 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 1 (1 ) — — — Collateralized loan obligations 199 (76 ) — (38 ) 85 Corporate debt securities 6 (5 ) — — 1 Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 206 (82 ) — (38 ) 86 Other trading assets — — — — — Total trading assets 206 (82 ) — (38 ) 86 Available-for-sale securities: Securities of U.S. states and political subdivisions — — 346 (61 ) 285 Mortgage-backed securities: Residential — — — — — Commercial — — — (3 ) (3 ) Total mortgage-backed securities — — — (3 ) (3 ) Corporate debt securities 4 — — (39 ) (35 ) Collateralized loan and other debt obligations 72 — — (33 ) 39 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — — 21 (140 ) (119 ) Total asset-backed securities — — 21 (140 ) (119 ) Total debt securities 76 — 367 (276 ) 167 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 76 — 367 (276 ) 167 Mortgages held for sale 22 (156 ) 106 (32 ) (60 ) Loans 1 (129 ) 6 (125 ) (247 ) Mortgage servicing rights (residential) (1) — (47 ) 583 — 536 Net derivative assets and liabilities: Interest rate contracts — — — (112 ) (112 ) Commodity contracts — — — (6 ) (6 ) Equity contracts — — — 37 37 Foreign exchange contracts — — — — — Credit contracts 2 (1 ) — 2 3 Other derivative contracts — — — — — Total derivative contracts 2 (1 ) — (79 ) (78 ) Other assets — — — — — Short sale liabilities — — — — — Other liabilities — — — — — (1) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities). The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2016 , are presented in Table 13.6 . Table 13.6: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Quarter ended March 31, 2016 Balance, beginning of period Total net gains (losses) included in Purchases, sales, issuances and settlements, net (1) Net unrealized gains (losses) included in income related to assets and liabilities held at period end (in millions) Net income Other compre- hensive income Transfers into Level 3 Transfers out of Level 3 Balance, end of period (2) Quarter ended March 31, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 8 — — — — — 8 — Collateralized loan obligations 343 (25 ) — (39 ) — (11 ) 268 (23 ) Corporate debt securities 56 (5 ) — (18 ) — — 33 (4 ) Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 407 (30 ) — (57 ) — (11 ) 309 (27 ) Other trading assets 34 (2 ) — — — — 32 — Total trading assets 441 (32 ) — (57 ) — (11 ) 341 (27 ) (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,500 1 3 (127 ) 80 — 1,457 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 73 — — — — — 73 — Total mortgage-backed securities 74 — — — — — 74 — Corporate debt securities 405 2 19 27 — — 453 — Collateralized loan and other debt obligations 565 15 (24 ) 257 — — 813 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 1,182 — — 58 — — 1,240 — Total asset-backed securities 1,182 — — 58 — — 1,240 — Total debt securities 3,726 18 (2 ) 215 80 — 4,037 — (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,726 18 (2 ) 215 80 — 4,037 — Mortgages held for sale 1,082 24 — (62 ) 29 (2 ) 1,071 21 (6) Loans 5,316 (1 ) — (94 ) — — 5,221 (2 ) (6) Mortgage servicing rights (residential) (7) 12,415 (1,448 ) — 366 — — 11,333 (957 ) (6) Net derivative assets and liabilities: Interest rate contracts 288 599 — (379 ) — (7 ) 501 270 Commodity contracts 12 2 — (3 ) — — 11 3 Equity contracts (111 ) (2 ) — (140 ) 25 (55 ) (283 ) (147 ) Foreign exchange contracts — — — — — — — — Credit contracts (3 ) 9 — (6 ) — — — (1 ) Other derivative contracts (58 ) (21 ) — 2 — — (77 ) (21 ) Total derivative contracts 128 587 — (526 ) 25 (62 ) 152 104 (8) Other assets 3,065 (57 ) — 89 — — 3,097 (58 ) (5) Short sale liabilities — — — — — — — — (3) Other liabilities (30 ) — — 25 — — (5 ) — (6) (1) See Table 13.7 for detail. (2) Represents only net gains (losses) that are due to changes in economic conditions and management’s estimates of fair value and excludes changes due to the collection/realization of cash flows over time. (3) Included in net gains (losses) from trading activities and other noninterest income in the income statement. (4) Included in net gains (losses) from debt securities in the income statement. (5) Included in net gains (losses) from equity investments in the income statement. (6) Included in mortgage banking and other noninterest income in the income statement. (7) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities). (8) Included in mortgage banking, trading activities, equity investments and other noninterest income in the income statement. (continued on following page) (continued from previous page) Table 13.7 presents gross purchases, sales, issuances and settlements related to the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended March 31, 2016 . Table 13.7: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2016 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2016 Trading assets: Securities of U.S. states and political subdivisions $ — — — — — Collateralized loan obligations 56 (95 ) — — (39 ) Corporate debt securities 3 (21 ) — — (18 ) Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 59 (116 ) — — (57 ) Other trading assets — — — — — Total trading assets 59 (116 ) — — (57 ) Available-for-sale securities: Securities of U.S. states and political subdivisions 28 — 16 (171 ) (127 ) Mortgage-backed securities: Residential — — — — — Commercial — — — — — Total mortgage-backed securities — — — — — Corporate debt securities 28 — — (1 ) 27 Collateralized loan and other debt obligations 301 — — (44 ) 257 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — — 160 (102 ) 58 Total asset-backed securities — — 160 (102 ) 58 Total debt securities 357 — 176 (318 ) 215 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 357 — 176 (318 ) 215 Mortgages held for sale 22 (159 ) 118 (43 ) (62 ) Loans 4 — 88 (186 ) (94 ) Mortgage servicing rights (residential) (1) — — 366 — 366 Net derivative assets and liabilities: Interest rate contracts — — — (379 ) (379 ) Commodity contracts — — — (3 ) (3 ) Equity contracts 13 (147 ) — (6 ) (140 ) Foreign exchange contracts — — — — — Credit contracts 3 — — (9 ) (6 ) Other derivative contracts — — — 2 2 Total derivative contracts 16 (147 ) — (395 ) (526 ) Other assets 89 — — — 89 Short sale liabilities — — — — — Other liabilities — — — 25 25 (1) For more information on the changes in mortgage servicing rights, see Note 8 (Mortgage Banking Activities).
Fair Value, Assets and Liabilities Measured on Recurring Basis, Quantitative Information about Valuation Techniques and Unobservable Inputs	Table 13.8: Valuation Techniques – Recurring Basis – March 31, 2017 ($ in millions, except cost to service amounts) Fair Value Level 3 Valuation Technique(s) Significant Unobservable Input Range of Inputs Weighted Average (1) March 31, 2017 Trading and available-for-sale securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 1,120 Discounted cash flow Discount rate 1.2 - 5.0 % 2.0 Auction rate securities and other municipal bonds 29 Discounted cash flow Discount rate 4.1 - 4.6 4.3 214 Vendor priced Collateralized loan and other debt obligations (2) 398 Market comparable pricing Comparability adjustment (19.8 ) - 20.3 1.6 964 Vendor priced Asset-backed securities: Diversified payment rights (3) 401 Discounted cash flow Discount rate 1.7 - 4.3 3.1 Other commercial and consumer 417 (4) Discounted cash flow Discount rate 3.3 - 4.7 4.2 Weighted average life 0.6 - 4.0 yrs 2.8 27 Vendor priced Mortgages held for sale (residential) 928 Discounted cash flow Default rate 0.5 - 8.1 % 1.8 Discount rate 2.1 - 7.0 5.3 Loss severity 0.1 - 45.9 28.1 Prepayment rate 6.2 - 17.2 10.0 29 Market comparable pricing Comparability adjustment (53.3 ) - 0.0 (36.3 ) Loans 505 (5) Discounted cash flow Discount rate 0.0 - 7.2 0.2 Prepayment rate 9.4 - 100.0 95.0 Mortgage servicing rights (residential) 13,208 Discounted cash flow Cost to service per loan (6) $ 79 - 562 150 Discount rate 6.6 - 18.8 % 6.9 Prepayment rate (7) 9.2 - 21.2 10.2 Net derivative assets and (liabilities): Interest rate contracts 105 Discounted cash flow Default rate 0.0 - 6.8 1.7 Loss severity 50.0 - 50.0 50.0 Prepayment rate 2.8 - 12.5 9.6 Interest rate contracts: derivative loan commitments 113 Discounted cash flow Fall-out factor 1.0 - 99.0 21.0 Initial-value servicing (23.8 ) - 131.2 bps 61.0 Equity contracts 94 Discounted cash flow Conversion factor (10.3 ) - 0.0 % (7.9 ) Weighted average life 0.8 - 2.8 yrs 1.7 (393 ) Option model Correlation factor (77.0 ) - 98.5 % 37.6 Volatility factor 5.0 - 100.0 19.7 Credit contracts 0 (8) Market comparable pricing Comparability adjustment (23.8 ) - 29.1 1.0 87 Option model Credit spread 0.0 - 9.4 1.1 Loss severity 12.0 - 60.0 48.4 Other assets: nonmarketable equity investments 17 Discounted cash flow Discount rate 5.0 - 10.3 9.0 Volatility Factor 0.4 2.8 1.4 3,723 Market comparable pricing Comparability adjustment (21.0 ) - (4.8 ) (15.6 ) Insignificant Level 3 assets, net of liabilities 526 (9) Total level 3 assets, net of liabilities $ 22,512 (10) (1) Weighted averages are calculated using outstanding unpaid principal balance for cash instruments, such as loans and securities, and notional amounts for derivative instruments. (2) Includes $945 million of collateralized debt obligations. (3) Securities backed by specified sources of current and future receivables generated from foreign originators. (4) A significant portion of the balance consists of investments in asset-backed securities that are revolving in nature, for which the timing of advances and repayments of principal are uncertain. (5) Consists of reverse mortgage loans. (6) The high end of the range of inputs is for servicing modified loans. For non-modified loans the range is $79 - $280 . (7) Includes a blend of prepayment speeds and expected defaults. Prepayment speeds are influenced by mortgage interest rates as well as our estimation of drivers of borrower behavior. (8) Consists of $15 million of derivative assets and $15 million derivative liabilities. (9) Represents the aggregate amount of Level 3 assets and liabilities measured at fair value on a recurring basis that are individually and in the aggregate insignificant. The amount includes corporate debt securities, mortgage-backed securities, other trading assets, other liabilities and certain net derivative assets and liabilities, such as commodity contracts, foreign exchange contracts, and other derivative contracts. (10) Consists of total Level 3 assets of $24.3 billion and total Level 3 liabilities of $1.8 billion , before netting of derivative balances. Table 13.9: Valuation Techniques – Recurring Basis – December 31, 2016 ($ in millions, except cost to service amounts) Fair Value Level 3 Valuation Technique(s) Significant Unobservable Input Range of Inputs Weighted Average (1) December 31, 2016 Trading and available-for-sale securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 906 Discounted cash flow Discount rate 1.1 - 5.6 % 2.0 Auction rate securities and other municipal bonds 29 Discounted cash flow Discount rate 3.7 - 4.9 4.5 Weighted average life 3.6 - 3.6 yrs 3.6 208 Vendor priced Collateralized loan and other debt obligations (2) 309 Market comparable pricing Comparability adjustment (15.5 ) - 20.3 % 2.9 879 Vendor priced Asset-backed securities: Diversified payment rights (3) 443 Discounted cash flow Discount rate 1.9 - 4.8 3.3 Other commercial and consumer 492 (4) Discounted cash flow Discount rate 3.0 - 4.6 3.9 Weighted average life 0.8 - 4.2 yrs 2.9 27 Vendor priced Mortgages held for sale (residential) 955 Discounted cash flow Default rate 0.5 - 7.9 % 1.9 Discount rate 1.1 - 6.9 5.1 Loss severity 0.1 - 42.5 26.9 Prepayment rate 6.3 - 17.1 10.0 30 Market comparable pricing Comparability adjustment (53.3 ) - 0.0 (37.8 ) Loans 758 (5) Discounted cash flow Discount rate 0.0 - 3.9 0.6 Prepayment rate 0.4 - 100.0 83.7 Utilization rate 0.0 - 0.8 0.1 Mortgage servicing rights (residential) 12,959 Discounted cash flow Cost to service per loan (6) $ 79 - 598 155 Discount rate 6.5 - 18.4 % 6.8 Prepayment rate (7) 9.4 - 20.6 10.3 Net derivative assets and (liabilities): Interest rate contracts 127 Discounted cash flow Default rate 0.1 - 6.8 2.1 Loss severity 50.0 - 50.0 50.0 Prepayment rate 2.8 - 12.5 9.6 Interest rate contracts: derivative loan commitments (6 ) Discounted cash flow Fall-out factor 1.0 - 99.0 15.0 Initial-value servicing (23.0 ) - 131.2 bps 56.8 Equity contracts 79 Discounted cash flow Conversion factor (10.6 ) - 0.0 % (7.9 ) Weighted average life 1.0 - 3.0 yrs 2.0 (346 ) Option model Correlation factor (65.0 ) - 98.5 % 39.9 Volatility factor 6.5 - 100.0 20.7 Credit contracts (28 ) Market comparable pricing Comparability adjustment (27.7 ) - 21.3 0.02 105 Option model Credit spread 0.0 - 11.6 1.2 Loss severity 12.0 - 60.0 50.4 Other assets: nonmarketable equity investments 21 Discounted cash flow Discount rate 5.0 - 10.3 8.7 Volatility Factor 0.3 2.4 1.1 3,238 Market comparable pricing Comparability adjustment (22.1 ) - (5.5 ) (16.4 ) Insignificant Level 3 assets, net of liabilities 570 (8) Total level 3 assets, net of liabilities $ 21,755 (9) (1) Weighted averages are calculated using outstanding unpaid principal balance for cash instruments, such as loans and securities, and notional amounts for derivative instruments. (2) Includes $847 million of collateralized debt obligations. (3) Securities backed by specified sources of current and future receivables generated from foreign originators. (4) A significant portion of the balance consists of investments in asset-backed securities that are revolving in nature, for which the timing of advances and repayments of principal are uncertain. (5) Consists of reverse mortgage loans. (6) The high end of the range of inputs is for servicing modified loans. For non-modified loans the range is $79 - $293 . (7) Includes a blend of prepayment speeds and expected defaults. Prepayment speeds are influenced by mortgage interest rates as well as our estimation of drivers of borrower behavior. (8) Represents the aggregate amount of Level 3 assets and liabilities measured at fair value on a recurring basis that are individually and in the aggregate insignificant. The amount includes corporate debt securities, mortgage-backed securities, other trading assets, other liabilities and certain net derivative assets and liabilities, such as commodity contracts, foreign exchange contracts, and other derivative contracts. (9) Consists of total Level 3 assets of $23.5 billion and total Level 3 liabilities of $1.7 billion , before netting of derivative balances.
Fair Value, Assets Recorded at Fair Value on a Nonrecurring Basis	Table 13.14 provides the fair value hierarchy and carrying amount of all assets that were still held as of March 31, 2017 , and December 31, 2016 , and for which a nonrecurring fair value adjustment was recorded during the periods presented. Table 13.14: Fair Value on a Nonrecurring Basis March 31, 2017 December 31, 2016 (in millions) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Mortgages held for sale (LOCOM) (1) $ — 1,624 1,318 2,942 — 2,312 1,350 3,662 Loans held for sale — 24 — 24 — 8 — 8 Loans: Commercial — 452 — 452 — 464 — 464 Consumer — 225 5 230 — 822 7 829 Total loans (2) — 677 5 682 — 1,286 7 1,293 Other assets - excluding nonmarketable equity investments at NAV (3) — 170 147 317 — 233 412 645 Total included in the fair value hierarchy $ — 2,495 1,470 3,965 — 3,839 1,769 5,608 Other assets - nonmarketable equity investments at NAV (4) — 13 Total assets at fair value on a nonrecurring basis $ 3,965 5,621 (1) Consists of commercial mortgages and residential real estate 1-4 family first mortgage loans. (2) Represents the carrying value of loans for which nonrecurring adjustments are based on the appraised value of the collateral. (3) Includes the fair value of foreclosed real estate, other collateral owned, operating lease assets and nonmarketable equity investments. (4) Consists of certain nonmarketable equity investments that are measured at fair value on a nonrecurring basis using NAV per share (or its equivalent) as a practical expedient and are excluded from the fair value hierarchy.
Changes in Fair Value of Assets Recorded at Fair Value on Nonrecurring Basis	Table 13.15 presents the increase (decrease) in value of certain assets held at the end of the respective reporting periods presented for which a nonrecurring fair value adjustment was recognized during the periods presented. Table 13.15: Change in Value of Assets with Nonrecurring Fair Value Adjustment Quarter ended March 31, (in millions) 2017 2016 Mortgages held for sale (LOCOM) $ 21 31 Loans: Commercial (127 ) (110 ) Consumer (175 ) (260 ) Total loans (1) (302 ) (370 ) Other assets (2) (100 ) (99 ) Total $ (381 ) (438 ) (1) Represents write-downs of loans based on the appraised value of the collateral. (2) Includes the losses on foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets. Also includes impairment losses on nonmarketable equity investments.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Quantitative Information about Valuation Techniques and Unobservable Inputs	Table 13.16 provides quantitative information about the valuation techniques and significant unobservable inputs used in the valuation of substantially all of our Level 3 assets that are measured at fair value on a nonrecurring basis using an internal model. The table is limited to financial instruments that had nonrecurring fair value adjustments during the periods presented. We have excluded from the table valuation techniques and significant unobservable inputs for certain classes of Level 3 assets measured using an internal model that we consider, both individually and in the aggregate, insignificant relative to our overall Level 3 nonrecurring measurements. We made this determination based upon an evaluation of each class that considered the magnitude of the positions, nature of the unobservable inputs and potential for significant changes in fair value due to changes in those inputs. Table 13.16: Valuation Techniques – Nonrecurring Basis ($ in millions) Fair Value Level 3 Valuation Technique(s) (1) Significant Unobservable Inputs (1) Range of inputs Weighted Average (2) March 31, 2017 Residential mortgages held for sale (LOCOM) $ 1,318 (3) Discounted cash flow Default rate (4) 0.1 — 8.6 % 2.8 % Discount rate 1.5 — 8.5 3.8 Loss severity 0.7 — 47.8 2.4 Prepayment rate (5) 3.5 — 100.0 49.9 Other assets: nonmarketable equity investments 3 Discounted cash flow Discount rate 15.0 — 15.0 15.0 Insignificant level 3 assets 149 Total $ 1,470 December 31, 2016 Residential mortgages held for sale (LOCOM) $ 1,350 (3) Discounted cash flow Default rate (4) 0.2 — 4.3 % 1.9 % Discount rate 1.5 — 8.5 3.8 Loss severity 0.7 — 50.1 2.4 Prepayment rate (5) 3.0 — 100.0 50.7 Other assets: nonmarketable equity investments 220 Discounted cash flow Discount rate 4.7 — 9.3 7.3 Insignificant level 3 assets 199 Total $ 1,769 (1) Refer to the narrative following Table 13.9 for a definition of the valuation technique(s) and significant unobservable inputs. (2) For residential MHFS, weighted averages are calculated using the outstanding unpaid principal balance of the loans. (3) Consists of approximately $1.3 billion of government insured/guaranteed loans purchased from GNMA-guaranteed mortgage securitizations at both March 31, 2017 , and December 31, 2016 , and $32 million and $33 million of other mortgage loans that are not government insured/guaranteed at March 31, 2017 and December 31, 2016 , respectively. (4) Applies only to non-government insured/guaranteed loans. (5) Includes the impact on prepayment rate of expected defaults for government insured/guaranteed loans, which impact the frequency and timing of early resolution of loans.
Fair Value Option, Carrying Amount	Table 13.17 reflects differences between the fair value carrying amount of the assets for which we have elected the fair value option and the contractual aggregate unpaid principal amount at maturity. Table 13.17: Fair Value Option March 31, 2017 December 31, 2016 (in millions) Fair value carrying amount Aggregate unpaid principal Fair value carrying amount less aggregate unpaid principal Fair value carrying amount Aggregate unpaid principal Fair value carrying amount less aggregate unpaid principal Trading assets – loans: Total loans $ 1,120 1,168 (48 ) 1,332 1,418 (86 ) Nonaccrual loans 46 49 (3 ) 100 115 (15 ) Mortgages held for sale: Total loans 14,018 13,695 323 22,042 21,961 81 Nonaccrual loans 130 172 (42 ) 136 182 (46 ) Loans 90 days or more past due and still accruing 11 15 (4 ) 12 16 (4 ) Loans held for sale: Total loans — 6 (6 ) — 6 (6 ) Nonaccrual loans — 6 (6 ) — 6 (6 ) Loans: Total loans 505 529 (24 ) 758 775 (17 ) Nonaccrual loans 302 325 (23 ) 297 318 (21 ) Other assets (1) 3,780 N/A N/A 3,275 N/A N/A (1) Consists of nonmarketable equity investments carried at fair value. See Note 6 (Other Assets) for more information.
Fair Value Option, Gains and Losses	The changes in fair value related to initial measurement and subsequent changes in fair value included in earnings for these assets measured at fair value are shown in Table 13.18 by income statement line item. Table 13.18: Fair Value Option – Changes in Fair Value Included in Earnings 2017 2016 (in millions) Mortgage banking noninterest income Net gains (losses) from trading activities Other noninterest income Mortgage banking noninterest income Net gains (losses) from trading activities Other noninterest income Quarter ended March 31, Trading assets - loans $ — 25 — — 10 — Mortgages held for sale 279 — — 565 — — Loans — — — — — (1 ) Other assets — — 490 — — (58 ) Other interests held (1) — (2 ) — — (2 ) — (1) Includes retained interests in securitizations.
Fair Value Option, Instrument Specific Credit Risk	Table 13.19 shows the estimated gains and losses from earnings attributable to instrument-specific credit risk related to assets accounted for under the fair value option. Table 13.19: Fair Value Option – Gains/Losses Attributable to Instrument-Specific Credit Risk Quarter ended March 31, (in millions) 2017 2016 Gains (losses) attributable to instrument-specific credit risk: Trading assets – loans $ 25 10 Mortgages held for sale (1 ) (4 ) Total $ 24 6
Fair Value, Estimated for Financial Instruments Not Carried at Fair Value	Table 13.20 is a summary of fair value estimates for financial instruments, excluding financial instruments recorded at fair value on a recurring basis, as they are included within Table 13.2 in this Note. The carrying amounts in the following table are recorded on the balance sheet under the indicated captions, except for nonmarketable equity investments, which are included in other assets. We have not included assets and liabilities that are not financial instruments in our disclosure, such as the value of the long-term relationships with our deposit, credit card and trust customers, amortized MSRs, premises and equipment, goodwill and other intangibles, deferred taxes and other liabilities. The total of the fair value calculations presented does not represent, and should not be construed to represent, the underlying value of the Company. Table 13.20: Fair Value Estimates for Financial Instruments Estimated fair value (in millions) Carrying amount Level 1 Level 2 Level 3 Total March 31, 2017 Financial assets Cash and due from banks (1) $ 19,698 19,698 — — 19,698 Federal funds sold, securities purchased under resale agreements and other short-term investments (1) 308,747 26,189 282,480 78 308,747 Held-to-maturity securities 108,030 45,154 60,138 2,337 107,629 Mortgages held for sale (2) 3,804 — 2,496 1,318 3,814 Loans held for sale 253 — 255 — 255 Loans, net (3) 927,812 — 58,461 878,705 937,166 Nonmarketable equity investments (cost method) Excluding investments at NAV 8,108 — 18 8,637 8,655 Total financial assets included in the fair value hierarchy 1,376,452 91,041 403,848 891,075 1,385,964 Investments at NAV (4) 14 16 Total financial assets $ 1,376,466 1,385,980 Financial liabilities Deposits $ 1,325,444 — 1,302,614 22,994 1,325,608 Short-term borrowings (1) 94,871 — 94,871 — 94,871 Long-term debt (5) 256,461 — 248,256 10,163 258,419 Total financial liabilities $ 1,676,776 — 1,645,741 33,157 1,678,898 December 31, 2016 Financial assets Cash and due from banks (1) $ 20,729 20,729 — — 20,729 Federal funds sold, securities purchased under resale agreements and other short-term investments (1) 266,038 18,670 247,286 82 266,038 Held-to-maturity securities 99,583 45,079 51,706 2,370 99,155 Mortgages held for sale (2) 4,267 — 2,927 1,350 4,277 Loans held for sale 80 — 81 — 81 Loans, net (3) 936,358 — 60,245 887,589 947,834 Nonmarketable equity investments (cost method) Excluding investments at NAV 8,362 — 18 8,924 8,942 Total financial assets included in the fair value hierarchy 1,335,417 84,478 362,263 900,315 1,347,056 Investments at NAV (4) 35 48 Total financial assets $ 1,335,452 1,347,104 Financial liabilities Deposits $ 1,306,079 — 1,282,158 23,995 1,306,153 Short-term borrowings (1) 96,781 — 96,781 — 96,781 Long-term debt (5) 255,070 — 245,704 10,075 255,779 Total financial liabilities $ 1,657,930 — 1,624,643 34,070 1,658,713 (1) Amounts consist of financial instruments for which carrying value approximates fair value. (2) Excludes MHFS for which we elected the fair value option. (3) Excludes loans for which the fair value option was elected and also exclude lease financing with a carrying amount of $19.2 billion and $19.3 billion at March 31, 2017 , and December 31, 2016 , respectively. (4) Consists of certain nonmarketable equity investments for which estimated fair values are determined using NAV per share (or its equivalent) as a practical expedient and are excluded from the fair value hierarchy. (5) Excludes capital lease obligations under capital leases of $7 million at both March 31, 2017 , and December 31, 2016 .

Preferred Stock (Tables)

Preferred Stock (Tables)	3 Months Ended
	Mar. 31, 2017
Preferred Stock [Abstract]
Preferred Stock Shares	Our total authorized, issued and outstanding preferred stock is presented in the following two tables along with the Employee Stock Ownership Plan (ESOP) Cumulative Convertible Preferred Stock. Table 14.1: Preferred Stock Shares March 31, 2017 December 31, 2016 Liquidation preference per share Shares authorized and designated Liquidation preference per share Shares authorized and designated DEP Shares Dividend Equalization Preferred Shares (DEP) $ 10 97,000 $ 10 97,000 Series H Floating Class A Preferred Stock (1) — — 20,000 50,000 Series I Floating Class A Preferred Stock 100,000 25,010 100,000 25,010 Series J 8.00% Non-Cumulative Perpetual Class A Preferred Stock 1,000 2,300,000 1,000 2,300,000 Series K 7.98% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 1,000 3,500,000 1,000 3,500,000 Series L 7.50% Non-Cumulative Perpetual Convertible Class A Preferred Stock 1,000 4,025,000 1,000 4,025,000 Series N 5.20% Non-Cumulative Perpetual Class A Preferred Stock 25,000 30,000 25,000 30,000 Series O 5.125% Non-Cumulative Perpetual Class A Preferred Stock 25,000 27,600 25,000 27,600 Series P 5.25% Non-Cumulative Perpetual Class A Preferred Stock 25,000 26,400 25,000 26,400 Series Q 5.85% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 69,000 25,000 69,000 Series R 6.625% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 34,500 25,000 34,500 Series S 5.90% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 80,000 25,000 80,000 Series T 6.00% Non-Cumulative Perpetual Class A Preferred Stock 25,000 32,200 25,000 32,200 Series U 5.875% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 25,000 80,000 25,000 80,000 Series V 6.00% Non-Cumulative Perpetual Class A Preferred Stock 25,000 40,000 25,000 40,000 Series W 5.70% Non-Cumulative Perpetual Class A Preferred Stock 25,000 40,000 25,000 40,000 Series X 5.50% Non-Cumulative Perpetual Class A Preferred Stock 25,000 46,000 25,000 46,000 ESOP Cumulative Convertible Preferred Stock (2) — 2,389,181 — 1,439,181 Total 12,841,891 11,941,891 (1) On January 26, 2017, we filed with the Delaware Secretary of State a Certificate Eliminating the Certificate of Designations with respect to the Series H preferred stock. (2) See the ESOP Cumulative Convertible Preferred Stock section in this Note for additional information about the liquidation preference for the ESOP Cumulative Convertible Preferred Stock. Table 14.2: Preferred Stock – Shares Issued and Carrying Value March 31, 2017 December 31, 2016 (in millions, except shares) Shares issued and outstanding Liquidation preference value Carrying value Discount Shares issued and outstanding Liquidation preference value Carrying value Discount DEP Shares Dividend Equalization Preferred Shares (DEP) 96,546 $ — — — 96,546 $ — — — Series I (1) Floating Class A Preferred Stock 25,010 2,501 2,501 — 25,010 2,501 2,501 — Series J (1) 8.00% Non-Cumulative Perpetual Class A Preferred Stock 2,150,375 2,150 1,995 155 2,150,375 2,150 1,995 155 Series K (1) 7.98% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 3,352,000 3,352 2,876 476 3,352,000 3,352 2,876 476 Series L (1) 7.50% Non-Cumulative Perpetual Convertible Class A Preferred Stock 3,968,000 3,968 3,200 768 3,968,000 3,968 3,200 768 Series N (1) 5.20% Non-Cumulative Perpetual Class A Preferred Stock 30,000 750 750 — 30,000 750 750 — Series O (1) 5.125% Non-Cumulative Perpetual Class A Preferred Stock 26,000 650 650 — 26,000 650 650 — Series P (1) 5.25% Non-Cumulative Perpetual Class A Preferred Stock 25,000 625 625 — 25,000 625 625 — Series Q (1) 5.85% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 69,000 1,725 1,725 — 69,000 1,725 1,725 — Series R (1) 6.625% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 33,600 840 840 — 33,600 840 840 — Series S (1) 5.90% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 80,000 2,000 2,000 — 80,000 2,000 2,000 — Series T (1) 6.00% Non-Cumulative Perpetual Class A Preferred Stock 32,000 800 800 — 32,000 800 800 — Series U (1) 5.875% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock 80,000 2,000 2,000 — 80,000 2,000 2,000 — Series V (1) 6.00% Non-Cumulative Perpetual Class A Preferred Stock 40,000 1,000 1,000 — 40,000 1,000 1,000 — Series W (1) 5.70% Non-Cumulative Perpetual Class A Preferred Stock 40,000 1,000 1,000 — 40,000 1,000 1,000 — Series X (1) 5.50% Non-Cumulative Perpetual Class A Preferred Stock 46,000 1,150 1,150 — 46,000 1,150 1,150 — ESOP Cumulative Convertible Preferred Stock 2,389,181 2,389 2,389 — 1,439,181 1,439 1,439 — Total 12,482,712 $ 26,900 25,501 1,399 11,532,712 $ 25,950 24,551 1,399 (1) Preferred shares qualify as Tier 1 capital.
ESOP Preferred Stock	Table 14.3: ESOP Preferred Stock Shares issued and outstanding Carrying value Adjustable dividend rate (in millions, except shares) Mar 31, Dec 31, Mar 31, Dec 31, Minimum Maximum ESOP Preferred Stock $1,000 liquidation preference per share 2017 950,000 — $ 950 — 7.00 % 8.00 2016 358,528 358,528 358 358 9.30 10.30 2015 200,820 200,820 201 201 8.90 9.90 2014 255,413 255,413 255 255 8.70 9.70 2013 222,558 222,558 223 223 8.50 9.50 2012 144,072 144,072 144 144 10.00 11.00 2011 149,301 149,301 149 149 9.00 10.00 2010 90,775 90,775 91 91 9.50 10.50 2008 17,714 17,714 18 18 10.50 11.50 Total ESOP Preferred Stock (1) 2,389,181 1,439,181 $ 2,389 1,439 Unearned ESOP shares (2) $ (2,546 ) (1,565 ) (1) At March 31, 2017 and December 31, 2016 , additional paid-in capital included $157 million and $126 million , respectively, related to ESOP preferred stock. (2) We recorded a corresponding charge to unearned ESOP shares in connection with the issuance of the ESOP Preferred Stock. The unearned ESOP shares are reduced as shares of the ESOP Preferred Stock are committed to be released.

Employee Benefits (Tables)

Employee Benefits (Tables)	3 Months Ended
	Mar. 31, 2017
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Net Periodic Benefit Cost	Table 15.1 presents the components of net periodic benefit cost. Table 15.1: Net Periodic Benefit Cost 2017 2016 Pension benefits Pension benefits (in millions) Qualified Non-qualified Other benefits Qualified Non-qualified Other benefits Quarter ended March 31, Service cost $ 1 — — 1 — — Interest cost 103 6 7 109 7 10 Expected return on plan assets (163 ) — (7 ) (142 ) — (8 ) Amortization of net actuarial loss (gain) 38 2 (2 ) 33 3 (1 ) Amortization of prior service credit — — (3 ) — — — Settlement loss 1 2 — — 2 — Net periodic benefit cost (income) $ (20 ) 10 (5 ) 1 12 1

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share Calculations	Table 16.1 shows earnings per common share and diluted earnings per common share and reconciles the numerator and denominator of both earnings per common share calculations. Table 16.1: Earnings Per Common Share Calculations Quarter ended March 31, (in millions, except per share amounts) 2017 2016 Wells Fargo net income $ 5,457 5,462 Less: Preferred stock dividends and other 401 377 Wells Fargo net income applicable to common stock (numerator) $ 5,056 5,085 Earnings per common share Average common shares outstanding (denominator) 5,008.6 5,075.7 Per share $ 1.01 1.00 Diluted earnings per common share Average common shares outstanding 5,008.6 5,075.7 Add: Stock options 21.2 21.2 Restricted share rights 28.0 31.7 Warrants 12.6 10.8 Diluted average common shares outstanding (denominator) 5,070.4 5,139.4 Per share $ 1.00 0.99
Outstanding Anti-Dilutive Options	Table 16.2 presents the outstanding options to purchase shares of common stock that were anti-dilutive (the exercise price was higher than the weighted-average market price), and therefore not included in the calculation of diluted earnings per common share. Table 16.2: Outstanding Anti-Dilutive Options Weighted-average shares Quarter ended March 31, (in millions) 2017 2016 Options 2.2 4.4

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2017
Cumulative Other Comprehensive Income Balances [Abstract]
Summary of Other Comprehensive Income	Table 17.1 provides the components of other comprehensive income (OCI), reclassifications to net income by income statement line item, and the related tax effects. Table 17.1: Summary of Other Comprehensive Income Quarter ended March 31, 2017 2016 (in millions) Before tax Tax effect Net of tax Before tax Tax effect Net of tax Investment securities: Net unrealized gains arising during the period $ 369 (133 ) 236 795 (310 ) 485 Reclassification of net (gains) losses to net income: Interest income on investment securities (1) 7 (3 ) 4 — — — Net gains on debt securities (36 ) 13 (23 ) (244 ) 91 (153 ) Net gains from equity investments (116 ) 44 (72 ) (59 ) 22 (37 ) Other noninterest income — — — (1 ) — (1 ) Subtotal reclassifications to net income (145 ) 54 (91 ) (304 ) 113 (191 ) Net change 224 (79 ) 145 491 (197 ) 294 Derivatives and hedging activities: Net unrealized gains (losses) arising during the period (133 ) 50 (83 ) 1,999 (753 ) 1,246 Reclassification of net (gains) losses to net income: Interest income on loans (205 ) 77 (128 ) (260 ) 98 (162 ) Interest expense on long-term debt 3 (1 ) 2 4 (2 ) 2 Subtotal reclassifications to net income (202 ) 76 (126 ) (256 ) 96 (160 ) Net change (335 ) 126 (209 ) 1,743 (657 ) 1,086 Defined benefit plans adjustments: Net actuarial and prior service losses arising during the period (7 ) 3 (4 ) (8 ) 3 (5 ) Reclassification of amounts to net periodic benefit costs (2): Amortization of net actuarial loss 38 (14 ) 24 35 (13 ) 22 Settlements and other — — — 2 (1 ) 1 Subtotal reclassifications to net periodic benefit costs 38 (14 ) 24 37 (14 ) 23 Net change 31 (11 ) 20 29 (11 ) 18 Foreign currency translation adjustments: Net unrealized gains arising during the period 16 1 17 43 8 51 Net change 16 1 17 43 8 51 Other comprehensive income (loss) $ (64 ) 37 (27 ) 2,306 (857 ) 1,449 Less: Other comprehensive income (loss) from noncontrolling interests, net of tax 14 (28 ) Wells Fargo other comprehensive income (loss), net of tax $ (41 ) 1,477 (1) Represents net unrealized gains and losses amortized over the remaining lives of securities that were transferred from the available-for-sale portfolio to the held-to-maturity portfolio. (2) These items are included in the computation of net periodic benefit cost, which is recorded in employee benefits expense (see Note 15 (Employee Benefits) for additional details).
Cumulative OCI Balances	Table 17.2: Cumulative OCI Balances (in millions) Investment securities Derivatives and hedging activities Defined benefit plans adjustments Foreign currency translation adjustments Cumulative other compre- hensive income Quarter ended March 31, 2017 Balance, beginning of period $ (1,099 ) 89 (1,943 ) (184 ) (3,137 ) Net unrealized gains (losses) arising during the period 236 (83 ) (4 ) 17 166 Amounts reclassified from accumulated other comprehensive income (91 ) (126 ) 24 — (193 ) Net change 145 (209 ) 20 17 (27 ) Less: Other comprehensive income from noncontrolling interests 13 — — 1 14 Balance, end of period $ (967 ) (120 ) (1,923 ) (168 ) (3,178 ) Quarter ended March 31, 2016 Balance, beginning of period $ 1,813 620 (1,951 ) (185 ) 297 Net unrealized gains (losses) arising during the period 485 1,246 (5 ) 51 1,777 Amounts reclassified from accumulated other comprehensive income (191 ) (160 ) 23 — (328 ) Net change 294 1,086 18 51 1,449 Less: Other comprehensive income (loss) from noncontrolling interests (30 ) — — 2 (28 ) Balance, end of period $ 2,137 1,706 (1,933 ) (136 ) 1,774

Operating Segments (Tables)

Operating Segments (Tables)	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Operating Segments	Table 18.1 presents our results by operating segment. Table 18.1: Operating Segments Community Banking Wholesale Banking Wealth and Investment Management Other (1) Consolidated Company (income/expense in millions, average balances in billions) 2017 2016 2017 2016 2017 2016 2017 2016 2017 2016 Quarter ended March 31, Net interest income (2) $ 7,627 7,468 4,148 3,748 1,074 943 (549 ) (492 ) 12,300 11,667 Provision (reversal of provision) for credit losses 646 720 (43 ) 363 (4 ) (14 ) 6 17 605 1,086 Noninterest income 4,466 5,146 2,890 3,210 3,119 2,911 (773 ) (739 ) 9,702 10,528 Noninterest expense 7,221 6,836 4,225 3,968 3,206 3,042 (860 ) (818 ) 13,792 13,028 Income (loss) before income tax expense (benefit) 4,226 5,058 2,856 2,627 991 826 (468 ) (430 ) 7,605 8,081 Income tax expense (benefit) 1,127 1,697 746 719 362 314 (178 ) (163 ) 2,057 2,567 Net income (loss) before noncontrolling interests 3,099 3,361 2,110 1,908 629 512 (290 ) (267 ) 5,548 5,514 Less: Net income (loss) from noncontrolling interests 90 65 (5 ) (13 ) 6 — — — 91 52 Net income (loss) (3) $ 3,009 3,296 2,115 1,921 623 512 (290 ) (267 ) 5,457 5,462 Average loans $ 482.7 484.3 466.3 429.8 70.7 64.1 (56.1 ) (51.0 ) 963.6 927.2 Average assets 990.7 947.4 807.8 748.6 221.9 208.1 (89.4 ) (84.2 ) 1,931.0 1,819.9 Average deposits 717.2 683.0 466.0 428.0 195.6 184.5 (79.6 ) (76.1 ) 1,299.2 1,219.4 (1) Includes the elimination of certain items that are included in more than one business segment, substantially all of which represents products and services for Wealth and Investment Management customers served through Community Banking distribution channels. (2) Net interest income is the difference between interest earned on assets and the cost of liabilities to fund those assets. Interest earned includes actual interest earned on segment assets and, if the segment has excess liabilities, interest credits for providing funding to other segments. The cost of liabilities includes interest expense on segment liabilities and, if the segment does not have enough liabilities to fund its assets, a funding charge based on the cost of excess liabilities from another segment. (3) Represents segment net income (loss) for Community Banking; Wholesale Banking; and Wealth and Investment Management segments and Wells Fargo net income for the consolidated company.

Regulatory and Agency Capital46

Regulatory and Agency Capital Requirements (Tables)	3 Months Ended
	Mar. 31, 2017
Banking and Thrift [Abstract]
Regulatory And Agency Capital Requirements	Table 19.1 presents regulatory capital information for Wells Fargo & Company and the Bank using Basel III, which increased minimum required capital ratios, and introduced a minimum Common Equity Tier 1 (CET1) ratio. We must report the lower of our CET1, tier 1 and total capital ratios calculated under the Standardized Approach and under the Advanced Approach in the assessment of our capital adequacy. The information presented reflects risk-weighted assets (RWAs) under the Standardized and Advanced Approaches with Transition Requirements. The Standardized Approach applies assigned risk weights to broad risk categories, while the calculation of RWAs under the Advanced Approach differs by requiring applicable banks to utilize a risk-sensitive methodology, which relies upon the use of internal credit models, and includes an operational risk component. The Basel III revised definition of capital, and changes are being phased-in effective January 1, 2014, through the end of 2021. The Bank is an approved seller/servicer of mortgage loans and is required to maintain minimum levels of shareholders’ equity, as specified by various agencies, including the United States Department of Housing and Urban Development, GNMA, FHLMC and FNMA. At March 31, 2017 , the Bank met these requirements. Other subsidiaries, including the Company’s insurance and broker-dealer subsidiaries, are also subject to various minimum capital levels, as defined by applicable industry regulations. The minimum capital levels for these subsidiaries, and related restrictions, are not significant to our consolidated operations. Table 19.1: Regulatory Capital Information Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 (in millions, except ratios) Advanced Approach Standardized Approach Advanced Approach Standardized Advanced Approach Standardized Advanced Approach Standardized Regulatory capital: Common equity tier 1 $ 149,860 149,860 148,785 148,785 133,362 133,362 132,225 132,225 Tier 1 172,543 172,543 171,364 171,364 133,362 133,362 132,225 132,225 Total 205,269 215,158 204,425 214,877 147,007 156,150 145,665 155,281 Assets: Risk-weighted $ 1,250,630 1,300,723 1,274,589 1,336,198 1,123,251 1,190,078 1,143,681 1,222,876 Adjusted average (1) 1,901,719 1,901,719 1,914,802 1,914,802 1,705,841 1,705,841 1,714,524 1,714,524 Regulatory capital ratios: Common equity tier 1 capital 11.98 % 11.52 * 11.67 11.13 * 11.87 11.21 * 11.56 10.81 * Tier 1 capital 13.80 13.27 * 13.44 12.82 * 11.87 11.21 * 11.56 10.81 * Total capital 16.41 * 16.54 16.04 * 16.08 13.09 * 13.12 12.74 12.70 * Tier 1 leverage (1) 9.07 9.07 8.95 8.95 7.82 7.82 7.71 7.71 *Denotes the lowest capital ratio as determined under the Advanced and Standardized Approaches. (1) The leverage ratio consists of Tier 1 capital divided by quarterly average total assets, excluding goodwill and certain other items.
Minimum Required Regulatory Capital Ratios (Transition Requirements) [Table Text Block]	Table 19.2 presents the minimum required regulatory capital ratios under Transition Requirements to which the Company and the Bank were subject as of March 31, 2017 and December 31, 2016 . Table 19.2: Minimum Required Regulatory Capital Ratios – Transition Requirements (1) Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2017 December 31, 2016 March 31, 2017 December 31, 2016 Regulatory capital ratios: Common equity tier 1 capital 6.750 % 5.625 5.750 5.125 Tier 1 capital 8.250 7.125 7.250 6.625 Total capital 10.250 9.125 9.250 8.625 Tier 1 leverage 4.000 4.000 4.000 4.000 (1) At March 31, 2017 , under transition requirements, the CET1, tier 1 and total capital minimum ratio requirements for Wells Fargo & Company include a capital conservation buffer of 1.250% and a global systemically important bank (G-SIB) surcharge of 1.000% . Only the 1.250% capital conservation buffer applies to the Bank at March 31, 2017 .

Summary of Significant Accoun47

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Supplemental cash flow information - Noncash activities
Trading assets retained from securitization of MHFS	$ 20,929	$ 9,955
Transfers from loans to MHFS	1,657	1,839
Transfers from available-for-sale to held-to-maturity securities	9,897	0
Private Forward Repurchase Transaction [Member]
Summary Of Significant Accounting Policies Textuals [Abstract]
Private forward repurchase contract	$ 0	$ 0

Business Combinations (Details)

Business Combinations (Details)	3 Months Ended
	Mar. 31, 2017business
Business Acquisition [Line Items]
Business acquisition, number completed during period	0

Federal Funds Sold, Securitie49

Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Line Items]
Federal funds sold and securities purchased under resale agreements	$ 68,457	$ 58,215
Interest-earning deposits	227,635	200,671
Other short-term investments	12,655	7,152
Total	308,747	266,038
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Textual [Abstract]
Unfunded contractual commitments	1,700	2,900
Funded contractual commitments	0	0
Loans [Member]
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Textual [Abstract]
Securities purchased under long-term resale agreements	$ 21,200	$ 21,300

Investment Securities, Major Ca

Investment Securities, Major Categories (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale securities:
Amortized Cost	$ 300,688	$ 310,153
Gross unrealized gains	3,614	3,618
Gross unrealized losses	(4,772)	(5,407)
Fair value	299,530	308,364
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	108,030	99,583
Gross unrealized gains	651	599
Gross unrealized losses	(1,052)	(1,027)
Held-to-maturity, at fair value	107,629	99,155
Total investment securities:
Amortized Cost	408,718	409,736
Gross unrealized gains	4,265	4,217
Gross unrealized losses	(5,824)	(6,434)
Fair value	407,159	407,519
Held-to-maturity, at fair value	107,629	99,155
Collateralized Debt Obligations [Member]
Available-for-sale securities:
Amortized Cost	875	819
Fair value	945	847
Asset-backed Securities, Securitized Loans and Receivables [Member]
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	1,200	1,300
Held-to-maturity, at fair value	1,200	1,300
Total investment securities:
Held-to-maturity, at fair value	1,200	1,300
Asset-backed Securities Collateralized by Dealer Floorplan Loans [Member]
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	1,100	1,100
Held-to-maturity, at fair value	1,100	1,100
Total investment securities:
Held-to-maturity, at fair value	1,100	1,100
Total debt securities [Member]
Available-for-sale securities:
Amortized Cost	300,013	309,447
Gross unrealized gains	3,157	3,102
Gross unrealized losses	(4,765)	(5,396)
Fair value	298,405	307,153
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	108,030	99,583
Held-to-maturity, at fair value	107,629	99,155
Total investment securities:
Held-to-maturity, at fair value	107,629	99,155
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Amortized Cost	24,681	25,874
Gross unrealized gains	43	54
Gross unrealized losses	(99)	(109)
Fair value	24,625	25,819
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	44,697	44,690
Gross unrealized gains	518	466
Gross unrealized losses	(61)	(77)
Held-to-maturity, at fair value	45,154	45,079
Total investment securities:
Held-to-maturity, at fair value	45,154	45,079
Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Amortized Cost	52,747	52,121
Gross unrealized gains	624	551
Gross unrealized losses	(1,310)	(1,571)
Fair value	52,061	51,101
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	6,331	6,336
Gross unrealized gains	28	17
Gross unrealized losses	(120)	(144)
Held-to-maturity, at fair value	6,239	6,209
Total investment securities:
Held-to-maturity, at fair value	6,239	6,209
Mortgage-backed securities: [Member]
Available-for-sale securities:
Amortized Cost	172,839	179,363
Gross unrealized gains	1,592	1,725
Gross unrealized losses	(3,232)	(3,540)
Fair value	171,199	177,548
Federal agencies [Member]
Available-for-sale securities:
Amortized Cost	159,098	163,513
Gross unrealized gains	1,042	1,175
Gross unrealized losses	(3,174)	(3,458)
Fair value	156,966	161,230
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	53,778	45,161
Gross unrealized gains	91	100
Gross unrealized losses	(870)	(804)
Held-to-maturity, at fair value	52,999	44,457
Total investment securities:
Held-to-maturity, at fair value	52,999	44,457
Residential [Member]
Available-for-sale securities:
Amortized Cost	7,146	7,375
Gross unrealized gains	457	449
Gross unrealized losses	(10)	(8)
Fair value	7,593	7,816
Commercial [Member]
Available-for-sale securities:
Amortized Cost	6,595	8,475
Gross unrealized gains	93	101
Gross unrealized losses	(48)	(74)
Fair value	6,640	8,502
Corporate debt securities [Member]
Available-for-sale securities:
Amortized Cost	10,097	11,186
Gross unrealized gains	418	381
Gross unrealized losses	(85)	(110)
Fair value	10,430	11,457
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Amortized Cost	33,686	34,764
Gross unrealized gains	341	287
Gross unrealized losses	(18)	(31)
Fair value	34,009	35,020
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	1,011	1,065
Gross unrealized gains	5	6
Gross unrealized losses	0	(1)
Held-to-maturity, at fair value	1,016	1,070
Total investment securities:
Held-to-maturity, at fair value	1,016	1,070
Other [Member]
Available-for-sale securities:
Amortized Cost	5,963	6,139
Gross unrealized gains	139	104
Gross unrealized losses	(21)	(35)
Fair value	6,081	6,208
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	2,213	2,331
Gross unrealized gains	9	10
Gross unrealized losses	(1)	(1)
Held-to-maturity, at fair value	2,221	2,340
Total investment securities:
Held-to-maturity, at fair value	2,221	2,340
Total marketable equity securities [Member]
Available-for-sale securities:
Amortized Cost	675	706
Gross unrealized gains	457	516
Gross unrealized losses	(7)	(11)
Fair value	1,125	1,211
Perpetual preferred securities [Member]
Available-for-sale securities:
Amortized Cost	467	445
Gross unrealized gains	21	35
Gross unrealized losses	(6)	(11)
Fair value	482	469
Other marketable equity securities [Member]
Available-for-sale securities:
Amortized Cost	208	261
Gross unrealized gains	436	481
Gross unrealized losses	(1)	0
Fair value	$ 643	$ 742

Investment Securities, Gross Un

Investment Securities, Gross Unrealized Losses and Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	$ (3,427)	$ (3,860)
Less than 12 months, Fair value, available-for-sale	142,816	154,806
12 months or more, Gross unrealized losses, available-for-sale	(1,345)	(1,547)
12 months or more, Fair value, available-for-sale	24,065	27,362
Total, Gross unrealized losses, available-for-sale	(4,772)	(5,407)
Total, Fair value, available-for-sale	166,881	182,168
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(1,051)	(1,025)
Less than 12 months, Fair value, held-to-maturity	58,048	51,317
12 months or more, Gross unrealized losses, held-to-maturity	(1)	(2)
12 months or more, Fair value, held-to-maturity	178	899
Total, Gross unrealized losses, held-to-maturity	(1,052)	(1,027)
Total, Fair value, held-to-maturity	58,226	52,216
Total investment securities:
Less than 12 months, Gross unrealized losses, investment securities	(4,478)	(4,885)
Less than 12 months, Fair value, investment securities	200,864	206,123
12 months or more, Gross unrealized losses, investment securities	(1,346)	(1,549)
12 months or more, Fair value, investment securities	24,243	28,261
Total, Gross unrealized losses, investment securities	(5,824)	(6,434)
Total, Fair value, investment securities	225,107	234,384
Total debt securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(3,425)	(3,857)
Less than 12 months, Fair value, available-for-sale	142,750	154,765
12 months or more, Gross unrealized losses, available-for-sale	(1,340)	(1,539)
12 months or more, Fair value, available-for-sale	24,017	27,317
Total, Gross unrealized losses, available-for-sale	(4,765)	(5,396)
Total, Fair value, available-for-sale	166,767	182,082
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(99)	(109)
Less than 12 months, Fair value, available-for-sale	11,090	10,816
12 months or more, Gross unrealized losses, available-for-sale	0	0
12 months or more, Fair value, available-for-sale	0	0
Total, Gross unrealized losses, available-for-sale	(99)	(109)
Total, Fair value, available-for-sale	11,090	10,816
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(61)	(77)
Less than 12 months, Fair value, held-to-maturity	4,772	6,351
12 months or more, Gross unrealized losses, held-to-maturity	0	0
12 months or more, Fair value, held-to-maturity	0	0
Total, Gross unrealized losses, held-to-maturity	(61)	(77)
Total, Fair value, held-to-maturity	4,772	6,351
Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(210)	(341)
Less than 12 months, Fair value, available-for-sale	14,826	17,412
12 months or more, Gross unrealized losses, available-for-sale	(1,100)	(1,230)
12 months or more, Fair value, available-for-sale	16,070	16,213
Total, Gross unrealized losses, available-for-sale	(1,310)	(1,571)
Total, Fair value, available-for-sale	30,896	33,625
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(120)	(144)
Less than 12 months, Fair value, held-to-maturity	4,497	4,871
12 months or more, Gross unrealized losses, held-to-maturity	0	0
12 months or more, Fair value, held-to-maturity	0	0
Total, Gross unrealized losses, held-to-maturity	(120)	(144)
Total, Fair value, held-to-maturity	4,497	4,871
Mortgage-backed securities: [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(3,101)	(3,385)
Less than 12 months, Fair value, available-for-sale	113,858	122,721
12 months or more, Gross unrealized losses, available-for-sale	(131)	(155)
12 months or more, Fair value, available-for-sale	4,682	5,416
Total, Gross unrealized losses, available-for-sale	(3,232)	(3,540)
Total, Fair value, available-for-sale	118,540	128,137
Federal agencies [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(3,066)	(3,338)
Less than 12 months, Fair value, available-for-sale	112,495	120,735
12 months or more, Gross unrealized losses, available-for-sale	(108)	(120)
12 months or more, Fair value, available-for-sale	3,358	3,481
Total, Gross unrealized losses, available-for-sale	(3,174)	(3,458)
Total, Fair value, available-for-sale	115,853	124,216
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(870)	(804)
Less than 12 months, Fair value, held-to-maturity	48,779	40,095
12 months or more, Gross unrealized losses, held-to-maturity	0	0
12 months or more, Fair value, held-to-maturity	0	0
Total, Gross unrealized losses, held-to-maturity	(870)	(804)
Total, Fair value, held-to-maturity	48,779	40,095
Residential [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(5)	(4)
Less than 12 months, Fair value, available-for-sale	389	527
12 months or more, Gross unrealized losses, available-for-sale	(5)	(4)
12 months or more, Fair value, available-for-sale	240	245
Total, Gross unrealized losses, available-for-sale	(10)	(8)
Total, Fair value, available-for-sale	629	772
Commercial [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(30)	(43)
Less than 12 months, Fair value, available-for-sale	974	1,459
12 months or more, Gross unrealized losses, available-for-sale	(18)	(31)
12 months or more, Fair value, available-for-sale	1,084	1,690
Total, Gross unrealized losses, available-for-sale	(48)	(74)
Total, Fair value, available-for-sale	2,058	3,149
Corporate debt securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(7)	(11)
Less than 12 months, Fair value, available-for-sale	883	946
12 months or more, Gross unrealized losses, available-for-sale	(78)	(99)
12 months or more, Fair value, available-for-sale	878	1,229
Total, Gross unrealized losses, available-for-sale	(85)	(110)
Total, Fair value, available-for-sale	1,761	2,175
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(2)	(2)
Less than 12 months, Fair value, available-for-sale	1,366	1,899
12 months or more, Gross unrealized losses, available-for-sale	(16)	(29)
12 months or more, Fair value, available-for-sale	1,399	3,197
Total, Gross unrealized losses, available-for-sale	(18)	(31)
Total, Fair value, available-for-sale	2,765	5,096
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	0	0
Less than 12 months, Fair value, held-to-maturity	0	0
12 months or more, Gross unrealized losses, held-to-maturity	0	(1)
12 months or more, Fair value, held-to-maturity	0	266
Total, Gross unrealized losses, held-to-maturity	0	(1)
Total, Fair value, held-to-maturity	0	266
Other [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(6)	(9)
Less than 12 months, Fair value, available-for-sale	727	971
12 months or more, Gross unrealized losses, available-for-sale	(15)	(26)
12 months or more, Fair value, available-for-sale	988	1,262
Total, Gross unrealized losses, available-for-sale	(21)	(35)
Total, Fair value, available-for-sale	1,715	2,233
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	0	0
Less than 12 months, Fair value, held-to-maturity	0	0
12 months or more, Gross unrealized losses, held-to-maturity	(1)	(1)
12 months or more, Fair value, held-to-maturity	178	633
Total, Gross unrealized losses, held-to-maturity	(1)	(1)
Total, Fair value, held-to-maturity	178	633
Total marketable equity securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(2)	(3)
Less than 12 months, Fair value, available-for-sale	66	41
12 months or more, Gross unrealized losses, available-for-sale	(5)	(8)
12 months or more, Fair value, available-for-sale	48	45
Total, Gross unrealized losses, available-for-sale	(7)	(11)
Total, Fair value, available-for-sale	114	86
Perpetual preferred securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(1)	(3)
Less than 12 months, Fair value, available-for-sale	61	41
12 months or more, Gross unrealized losses, available-for-sale	(5)	(8)
12 months or more, Fair value, available-for-sale	48	45
Total, Gross unrealized losses, available-for-sale	(6)	(11)
Total, Fair value, available-for-sale	109	86
Other marketable equity securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(1)	0
Less than 12 months, Fair value, available-for-sale	5	0
12 months or more, Gross unrealized losses, available-for-sale	0	0
12 months or more, Fair value, available-for-sale	0	0
Total, Gross unrealized losses, available-for-sale	(1)	0
Total, Fair value, available-for-sale	$ 5	$ 0

Investment Securities, Unrealiz

Investment Securities, Unrealized Loss Position, by Credit Rating (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale securities:
Gross unrealized losses	$ (4,772)	$ (5,407)
Fair value	299,530	308,364
Held-to-maturity securities:
Gross unrealized losses	(1,052)	(1,027)
Fair value	107,629	99,155
Total investment securities:
Gross unrealized losses	(5,824)	(6,434)
Fair value	407,159	407,519
Total debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(4,765)	(5,396)
Fair value	298,405	307,153
Held-to-maturity securities:
Fair value	107,629	99,155
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(99)	(109)
Fair value	24,625	25,819
Held-to-maturity securities:
Gross unrealized losses	(61)	(77)
Fair value	45,154	45,079
Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Gross unrealized losses	(1,310)	(1,571)
Fair value	52,061	51,101
Held-to-maturity securities:
Gross unrealized losses	(120)	(144)
Fair value	6,239	6,209
Mortgage-backed securities: [Member]
Available-for-sale securities:
Gross unrealized losses	(3,232)	(3,540)
Fair value	171,199	177,548
Federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(3,174)	(3,458)
Fair value	156,966	161,230
Held-to-maturity securities:
Gross unrealized losses	(870)	(804)
Fair value	52,999	44,457
Residential [Member]
Available-for-sale securities:
Gross unrealized losses	(10)	(8)
Fair value	7,593	7,816
Commercial [Member]
Available-for-sale securities:
Gross unrealized losses	(48)	(74)
Fair value	6,640	8,502
Corporate debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(85)	(110)
Fair value	10,430	11,457
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Gross unrealized losses	(18)	(31)
Fair value	34,009	35,020
Held-to-maturity securities:
Gross unrealized losses	0	(1)
Fair value	1,016	1,070
Other [Member]
Available-for-sale securities:
Gross unrealized losses	(21)	(35)
Fair value	6,081	6,208
Held-to-maturity securities:
Gross unrealized losses	(1)	(1)
Fair value	2,221	2,340
Total marketable equity securities [Member]
Available-for-sale securities:
Gross unrealized losses	(7)	(11)
Fair value	1,125	1,211
Perpetual preferred securities [Member]
Available-for-sale securities:
Gross unrealized losses	(6)	(11)
Fair value	482	469
Unrated Investment Grade Securities [Member]
Total investment securities:
Gross unrealized losses	(38)	(54)
Fair value	5,900	7,000
Investment grade [Member]
Available-for-sale securities:
Gross unrealized losses	(4,606)	(5,202)
Fair value	164,282	179,308
Held-to-maturity securities:
Gross unrealized losses	(1,051)	(1,026)
Fair value	58,158	52,199
Total investment securities:
Gross unrealized losses	(5,657)	(6,228)
Fair value	222,440	231,507
Investment grade [Member] | Total debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(4,601)	(5,192)
Fair value	164,192	179,240
Investment grade [Member] | Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(99)	(109)
Fair value	11,090	10,816
Held-to-maturity securities:
Gross unrealized losses	(61)	(77)
Fair value	4,772	6,351
Investment grade [Member] | Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Gross unrealized losses	(1,262)	(1,517)
Fair value	30,538	33,271
Held-to-maturity securities:
Gross unrealized losses	(120)	(144)
Fair value	4,497	4,871
Investment grade [Member] | Mortgage-backed securities: [Member]
Available-for-sale securities:
Gross unrealized losses	(3,183)	(3,474)
Fair value	117,520	126,977
Investment grade [Member] | Federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(3,174)	(3,458)
Fair value	115,853	124,216
Held-to-maturity securities:
Gross unrealized losses	(869)	(803)
Fair value	48,711	40,078
Investment grade [Member] | Residential [Member]
Available-for-sale securities:
Gross unrealized losses	(1)	(1)
Fair value	105	176
Investment grade [Member] | Commercial [Member]
Available-for-sale securities:
Gross unrealized losses	(8)	(15)
Fair value	1,562	2,585
Investment grade [Member] | Corporate debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(23)	(31)
Fair value	972	1,238
Investment grade [Member] | Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Gross unrealized losses	(18)	(31)
Fair value	2,765	5,096
Held-to-maturity securities:
Gross unrealized losses	0	(1)
Fair value	0	266
Investment grade [Member] | Other [Member]
Available-for-sale securities:
Gross unrealized losses	(16)	(30)
Fair value	1,307	1,842
Held-to-maturity securities:
Gross unrealized losses	(1)	(1)
Fair value	178	633
Investment grade [Member] | Perpetual preferred securities [Member]
Available-for-sale securities:
Gross unrealized losses	(5)	(10)
Fair value	90	68
Non-investment grade [Member]
Available-for-sale securities:
Gross unrealized losses	(165)	(205)
Fair value	2,594	2,860
Held-to-maturity securities:
Gross unrealized losses	(1)	(1)
Fair value	68	17
Total investment securities:
Gross unrealized losses	(166)	(206)
Fair value	2,662	2,877
Non-investment grade [Member] | Total debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(164)	(204)
Fair value	2,575	2,842
Non-investment grade [Member] | Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	0	0
Fair value	0	0
Held-to-maturity securities:
Gross unrealized losses	0	0
Fair value	0	0
Non-investment grade [Member] | Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Gross unrealized losses	(48)	(54)
Fair value	358	354
Held-to-maturity securities:
Gross unrealized losses	0	0
Fair value	0	0
Non-investment grade [Member] | Mortgage-backed securities: [Member]
Available-for-sale securities:
Gross unrealized losses	(49)	(66)
Fair value	1,020	1,160
Non-investment grade [Member] | Federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	0	0
Fair value	0	0
Held-to-maturity securities:
Gross unrealized losses	(1)	(1)
Fair value	68	17
Non-investment grade [Member] | Residential [Member]
Available-for-sale securities:
Gross unrealized losses	(9)	(7)
Fair value	524	596
Non-investment grade [Member] | Commercial [Member]
Available-for-sale securities:
Gross unrealized losses	(40)	(59)
Fair value	496	564
Non-investment grade [Member] | Corporate debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(62)	(79)
Fair value	789	937
Non-investment grade [Member] | Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Gross unrealized losses	0	0
Fair value	0	0
Held-to-maturity securities:
Gross unrealized losses	0	0
Fair value	0	0
Non-investment grade [Member] | Other [Member]
Available-for-sale securities:
Gross unrealized losses	(5)	(5)
Fair value	408	391
Held-to-maturity securities:
Gross unrealized losses	0	0
Fair value	0	0
Non-investment grade [Member] | Perpetual preferred securities [Member]
Available-for-sale securities:
Gross unrealized losses	(1)	(1)
Fair value	$ 19	$ 18

Investment Securities, Contract

Investment Securities, Contractual Maturities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 298,405	$ 307,153
Weighted average yield contractual maturities, Total, available-for-sale	3.48%	3.44%
Due within 1 year, Contractual maturities, available-for-sale	$ 5,420	$ 6,418
Percentage of weighted average yield, Due within 1 year, available-for-sale	2.11%	1.93%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 36,559	$ 37,442
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	2.25%	2.20%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 32,937	$ 31,202
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.19%	3.17%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 223,489	$ 232,091
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.76%	3.72%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 108,030	$ 99,583
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	107,629	99,155
Total debt securities [Member]
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 108,030	$ 99,583
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.88%	2.87%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	$ 33,900	$ 33,663
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	2.04%	2.04%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 14,515	$ 14,883
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.48%	2.43%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 59,615	$ 51,037
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	3.46%	3.55%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 107,629	$ 99,155
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	34,278	34,025
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	14,606	14,918
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	58,745	50,212
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 24,625	$ 25,819
Weighted average yield contractual maturities, Total, available-for-sale	1.45%	1.44%
Due within 1 year, Contractual maturities, available-for-sale	$ 1,322	$ 1,328
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.92%	0.92%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 22,288	$ 23,477
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	1.46%	1.45%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 1,015	$ 1,014
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	1.80%	1.80%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 0	$ 0
Percentage of weighted average yield, Due after 10 years, available-for-sale	0.00%	0.00%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 44,697	$ 44,690
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.12%	2.12%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	$ 32,311	$ 31,956
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	2.04%	2.05%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 12,386	$ 12,734
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.32%	2.30%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 45,154	$ 45,079
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	32,686	32,313
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	12,468	12,766
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	0	0
Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 52,061	$ 51,101
Weighted average yield contractual maturities, Total, available-for-sale	5.68%	5.65%
Due within 1 year, Contractual maturities, available-for-sale	$ 2,590	$ 2,990
Percentage of weighted average yield, Due within 1 year, available-for-sale	1.80%	1.69%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 9,990	$ 9,299
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	2.86%	2.74%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 2,597	$ 2,391
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	4.65%	4.71%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 36,884	$ 36,421
Percentage of weighted average yield, Due after 10 years, available-for-sale	6.78%	6.78%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 6,331	$ 6,336
Weighted average yield contractual maturities, Total, held-to-maturity, cost	6.04%	6.04%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	$ 24	$ 24
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	8.20%	8.20%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 470	$ 436
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	6.72%	6.76%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 5,837	$ 5,876
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	5.98%	5.98%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 6,239	$ 6,209
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	24	24
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	469	430
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	5,746	5,755
Mortgage-backed securities: [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 171,199	$ 177,548
Weighted average yield contractual maturities, Total, available-for-sale	3.20%	3.19%
Due within 1 year, Contractual maturities, available-for-sale	$ 1	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	5.16%	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 133	$ 153
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	3.54%	3.34%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 5,618	$ 5,428
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.08%	3.16%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 165,447	$ 171,967
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.20%	3.19%
Federal agencies [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 156,966	$ 161,230
Weighted average yield contractual maturities, Total, available-for-sale	3.11%	3.09%
Due within 1 year, Contractual maturities, available-for-sale	$ 1	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	5.16%	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 107	$ 128
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	3.07%	2.98%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 5,564	$ 5,363
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.08%	3.16%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 151,294	$ 155,739
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.11%	3.09%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 53,778	$ 45,161
Weighted average yield contractual maturities, Total, held-to-maturity, cost	3.19%	3.23%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	$ 0	$ 0
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	0.00%	0.00%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	0.00%	0.00%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 53,778	$ 45,161
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	3.19%	3.23%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 52,999	$ 44,457
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	0	0
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	0	0
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	52,999	44,457
Residential [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 7,593	$ 7,816
Weighted average yield contractual maturities, Total, available-for-sale	3.84%	3.84%
Due within 1 year, Contractual maturities, available-for-sale	$ 0	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 26	$ 25
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	5.50%	5.21%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 23	$ 35
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.85%	4.34%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 7,544	$ 7,756
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.84%	3.83%
Commercial [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 6,640	$ 8,502
Weighted average yield contractual maturities, Total, available-for-sale	4.40%	4.58%
Due within 1 year, Contractual maturities, available-for-sale	$ 0	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 0	$ 0
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	0.00%	0.00%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 31	$ 30
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.13%	3.13%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 6,609	$ 8,472
Percentage of weighted average yield, Due after 10 years, available-for-sale	4.40%	4.59%
Corporate debt securities [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 10,430	$ 11,457
Weighted average yield contractual maturities, Total, available-for-sale	4.92%	4.81%
Due within 1 year, Contractual maturities, available-for-sale	$ 1,467	$ 2,043
Percentage of weighted average yield, Due within 1 year, available-for-sale	3.70%	2.90%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 3,124	$ 3,374
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	5.79%	5.89%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 4,696	$ 4,741
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	4.63%	4.71%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 1,143	$ 1,299
Percentage of weighted average yield, Due after 10 years, available-for-sale	5.35%	5.38%
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 34,009	$ 35,020
Weighted average yield contractual maturities, Total, available-for-sale	2.81%	2.70%
Due within 1 year, Contractual maturities, available-for-sale	$ 0	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 153	$ 168
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	1.84%	1.34%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 17,841	$ 16,482
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.77%	2.66%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 16,015	$ 18,370
Percentage of weighted average yield, Due after 10 years, available-for-sale	2.86%	2.74%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 1,011	$ 1,065
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.66%	2.58%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	$ 0	$ 0
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	0.00%	0.00%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 1,011	$ 1,065
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.66%	2.58%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 1,016	$ 1,070
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	0	0
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	1,016	1,070
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	0	0
Other [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 6,081	$ 6,208
Weighted average yield contractual maturities, Total, available-for-sale	2.37%	2.18%
Due within 1 year, Contractual maturities, available-for-sale	$ 40	$ 57
Percentage of weighted average yield, Due within 1 year, available-for-sale	3.21%	3.06%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 871	$ 971
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	2.41%	2.35%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 1,170	$ 1,146
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.24%	2.04%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 4,000	$ 4,034
Percentage of weighted average yield, Due after 10 years, available-for-sale	2.39%	2.17%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 2,213	$ 2,331
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.00%	1.83%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	$ 1,565	$ 1,683
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	1.95%	1.81%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 648	$ 648
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.13%	1.89%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 0	$ 0
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	0.00%	0.00%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 2,221	$ 2,340
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	1,568	1,688
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	653	652
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	$ 0	$ 0

Investment Securities, Realized

Investment Securities, Realized Gains and Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Marketable Securities, Realized Gain (Loss) [Abstract]
Gross realized gains	$ 241	$ 385
Gross realized losses	(36)	(13)
OTTI write-downs	(53)	(69)
Net realized gains from available-for-sale securities	152	303
Net realized gains from nonmarketable equity investments	287	185
Net realized gains from debt securities and equity investments	$ 439	$ 488

Investment Securities, OTTI Inc

Investment Securities, OTTI Included in Earnings (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule of Marketable Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities	$ 0	$ 0
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	53	69
Nonmarketable equity investments (1)	76	129
Total OTTI write-downs included in earnings (1)	129	198
Total debt securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	52	65
Securities of U.S. states and political subdivisions [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	8	4
Residential [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	3	12
Commercial [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	25	1
Corporate debt securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	16	45
Other [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	0	3
Total marketable equity securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	1	4
Other marketable equity securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	1	4
Energy [Domain]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	15	46
Nonmarketable equity investments (1)	24	78
Total OTTI write-downs included in earnings (1)	$ 39	$ 124

Investment Securities, OTTI Deb

Investment Securities, OTTI Debt Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	$ 53	$ 69
Cost And Equity Method, Other Than Temporary Impairment	76	129
Other Than Temporary Impairment Investments Portion Recognized In Earnings Net	129	198
Total debt securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	52	65
Total changes to OCI for non-credit-related OTTI	(9)	11
Total OTTI losses recorded on debt securities	43	76
Total debt securities [Member] | Credit-related OTTI [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	52	61
Total debt securities [Member] | Intent-to-sell OTTI [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	0	4
Securities of U.S. states and political subdivisions [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	8	4
Total changes to OCI for non-credit-related OTTI	(5)	0
Residential [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	3	12
Total changes to OCI for non-credit-related OTTI	3	10
Commercial Mortgage Backed Securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	25	1
Total changes to OCI for non-credit-related OTTI	(7)	3
Corporate debt securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	16	45
Total changes to OCI for non-credit-related OTTI	0	(4)
Other debt securities
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	0	3
Total changes to OCI for non-credit-related OTTI	0	2
Equity Securities, Other 1 [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	1	4
Equity Securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	$ 1	$ 4

Investment Securities, Credit L

Investment Securities, Credit Loss Component (Details) - Total debt securities [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Credit loss recognized, beginning of period	$ 1,043	$ 1,092
Additions:
For securities with initial credit impairments	6	38
For securities with previous credit impairments	46	23
Total additions	52	61
Reductions:
For securities sold, matured, or intended/required to be sold	(7)	(6)
For recoveries of previous credit impairments	(2)	(2)
Total reductions	(9)	(8)
Credit loss recognized, end of period	$ 1,086	$ 1,145

Loans and Allowance for Credi58

Loans and Allowance for Credit Losses, Loans Outstanding (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Temporary Advance Arrangements		$ 76,000	$ 77,000
Loans and Leases Receivable, Deferred Income		4,300	4,400
Loans	[1]	958,405	967,604
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		505,004	506,536
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		329,252	330,840
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		131,532	132,491
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		25,064	23,916
Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		19,156	19,289
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		453,401	461,068
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		274,633	275,579
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		44,333	46,237
Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		34,742	36,700
Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		60,408	62,286
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		39,285	40,266
Geographic Distribution, Foreign [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		66,650	65,284
Geographic Distribution, Foreign [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		56,987	55,396
Geographic Distribution, Foreign [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		8,206	8,541
Geographic Distribution, Foreign [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		471	375
Geographic Distribution, Foreign [Member] | Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		986	972
International [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Letters of Credit Outstanding, Amount		$ 1,100	$ 1,100
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi59

Loans and Allowance for Credit Losses, Significant Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	$ 1,161	$ 24,646
Sales	(349)	(495)
Transfers to MHFS/LHFS	(479)	(35)
Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	1,159	24,646
Sales	(287)	(223)
Transfers to MHFS/LHFS	(479)	(32)
Consumer Portfolio Segment [Member]
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	2	0
Sales	(62)	(272)
Transfers to MHFS/LHFS	$ 0	$ (3)

Loans and Allowance for Credi60

Loans and Allowance for Credit Losses, Commitments to Lend (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Temporary Advance Arrangements	$ 76,000	$ 77,000
Total unfunded credit commitments	549,155	551,524
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	316,794	319,662
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	7,448	7,833
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	17,794	18,840
Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	11	16
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	342,047	346,351
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	207,108	205,173
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	33,594	33,498
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	41,070	41,431
Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	104,630	101,895
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	27,814	28,349
International [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Letters of Credit International	$ 1,100	$ 1,100

Loans and Allowance for Credi61

Loans and Allowance for Credit Losses, Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 12,540	$ 12,512
Provision for credit losses	605	1,086
Interest income on certain impaired loans	(48)	(48)
Loan charge-offs	(1,238)	(1,326)
Loan recoveries	433	440
Net loan charge-offs	(805)	(886)
Other	(5)	4
Allowance for credit losses, ending balance	12,287	12,668
Components:
Allowance for loan losses			$ 11,168	$ 11,419	$ 11,621
Allowance for unfunded credit commitments			1,119		1,047
Total allowance for credit losses	$ 12,540	$ 12,512	$ 12,287	12,540	$ 12,668
Net loan charge-offs (annualized) as a percentage of average total loans	0.34%	0.38%
Allowance for loan losses as a percentage of total loans			1.17%		1.23%
Allowance for credit losses as a percentage of total loans			1.28%		1.34%
Total Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 7,394	$ 6,872
Provision for credit losses	(89)	714
Interest income on certain impaired loans	(15)	(5)
Loan charge-offs	(265)	(356)
Loan recoveries	122	119
Net loan charge-offs	(143)	(237)
Other	(5)	4
Allowance for credit losses, ending balance	7,142	7,348
Components:
Total allowance for credit losses	7,394	6,872	$ 7,142	7,394	$ 7,348
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(253)	(349)
Loan recoveries	82	76
Commercial real estate mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(5)	(3)
Loan recoveries	30	32
Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	0	0
Loan recoveries	8	8
Commercial Lease Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(7)	(4)
Loan recoveries	2	3
Total Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	5,146	5,640
Provision for credit losses	694	372
Interest income on certain impaired loans	(33)	(43)
Loan charge-offs	(973)	(970)
Loan recoveries	311	321
Net loan charge-offs	(662)	(649)
Other	0	0
Allowance for credit losses, ending balance	5,145	5,320
Components:
Total allowance for credit losses	5,146	5,640	$ 5,145	$ 5,146	$ 5,320
Real estate 1-4 family first mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(69)	(137)
Loan recoveries	62	89
Real estate 1-4 family junior lien mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(93)	(133)
Loan recoveries	70	59
Credit Card [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(367)	(314)
Loan recoveries	58	52
Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(255)	(211)
Loan recoveries	88	84
Other revolving credit and installment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(189)	(175)
Loan recoveries	$ 33	$ 37

Loans and Allowance for Credi62

Loans and Allowance for Credit Losses, Allowance Activity by Portfolio Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 12,540	$ 12,512
Provision for credit losses	605	1,086
Interest income on certain impaired loans	(48)	(48)
Loan charge-offs	(1,238)	(1,326)
Loan recoveries	433	440
Net loan charge-offs	(805)	(886)
Other	(5)	4
Allowance for credit losses, ending balance	12,287	12,668
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	7,394	6,872
Provision for credit losses	(89)	714
Interest income on certain impaired loans	(15)	(5)
Loan charge-offs	(265)	(356)
Loan recoveries	122	119
Net loan charge-offs	(143)	(237)
Other	(5)	4
Allowance for credit losses, ending balance	7,142	7,348
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	5,146	5,640
Provision for credit losses	694	372
Interest income on certain impaired loans	(33)	(43)
Loan charge-offs	(973)	(970)
Loan recoveries	311	321
Net loan charge-offs	(662)	(649)
Other	0	0
Allowance for credit losses, ending balance	$ 5,145	$ 5,320

Loans and Allowance for Credi63

Loans and Allowance for Credit Losses, Allowance by Credit Impairment Methodology (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		$ 9,972	$ 9,945
Allowance for Credit Losses, Individually evaluated		2,313	2,593
Total allowance for credit losses		12,287	12,540	$ 12,668	$ 12,512
Financing Receivable, Collectively evaluated		921,184	928,496
Financing Receivable, Individually evaluated		21,551	22,377
Loans	[1]	958,405	967,604
Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		6,281	6,392
Allowance for Credit Losses, Individually evaluated		859	1,000
Total allowance for credit losses		7,142	7,394	7,348	6,872
Financing Receivable, Collectively evaluated		499,565	500,487
Financing Receivable, Individually evaluated		5,076	5,372
Loans		505,004	506,536
Consumer Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		3,691	3,553
Allowance for Credit Losses, Individually evaluated		1,454	1,593
Total allowance for credit losses		5,145	5,146	$ 5,320	$ 5,640
Financing Receivable, Collectively evaluated		421,619	428,009
Financing Receivable, Individually evaluated		16,475	17,005
Loans		453,401	461,068
PCI Loans Carrying Value [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Financing Receivable, Recorded Investment, Current		15,670	16,731
PCI Loans Carrying Value [Member] | Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Financing Receivable, Recorded Investment, Current		363	677
PCI Loans Carrying Value [Member] | Consumer Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Financing Receivable, Recorded Investment, Current		15,307	16,054
Allowance for Doubtful Accounts [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Total allowance for credit losses		2	2
Allowance for Doubtful Accounts [Member] | Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Total allowance for credit losses		2	2
Allowance for Doubtful Accounts [Member] | Consumer Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Total allowance for credit losses		$ 0	$ 0
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi64

Loans and Allowance for Credit Losses, Loans by Credit Quality Indicator, Commercial (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2008
Loans and Leases Receivable Disclosure [Abstract]
Loans	[1]	$ 958,405	$ 967,604
Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		505,004	506,536
Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		329,252	330,840
Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		131,532	132,491
Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		25,064	23,916
Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		19,156	19,289
Loans Excluding Purchased Credit-Impaired Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status		9,759	10,384
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Mortgage and Construction Loans [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		5,700
Financing Receivable, Recorded Investment, Nonaccrual Status		712
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		504,641	505,859
Financing Receivable, Recorded Investment, Nonaccrual Status		3,706	4,059
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		477,198	476,266
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		27,443	29,593
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		329,075	330,603
Financing Receivable, Recorded Investment, Nonaccrual Status		2,898	3,216
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		308,652	308,166
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		20,423	22,437
Financing Receivable, Recorded Investment, Nonaccrual Status		2,898
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		131,368	132,108
Financing Receivable, Recorded Investment, Nonaccrual Status		672	685
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		126,215	126,793
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		5,153	5,315
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		25,042	23,859
Financing Receivable, Recorded Investment, Nonaccrual Status		40	43
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		24,450	23,408
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		592	451
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		19,156	19,289
Financing Receivable, Recorded Investment, Nonaccrual Status		96	115
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		17,881	17,899
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		1,275	1,390
PCI Loans Carrying Value [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		15,670	16,731
PCI Loans Carrying Value [Member] | Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		363	677	$ 18,700
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		177	237
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		164	383
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		22	57
PCI Loans Carrying Value [Member] | Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		$ 0	$ 0
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi65

Loans and Allowance for Credit Losses, Loans by Delinquency Status, Commercial (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2008
By delinquency status:
Loans	[1]	$ 958,405	$ 967,604
Total Commercial [Member]
By delinquency status:
Loans		505,004	506,536
Commercial and Industrial Loans [Member]
By delinquency status:
Loans		329,252	330,840
Commercial real estate mortgage [Member]
By delinquency status:
Loans		131,532	132,491
Commercial Real Estate Construction [Member]
By delinquency status:
Loans		25,064	23,916
Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		19,156	19,289
Loans Excluding Purchased Credit-Impaired Loans [Member]
By delinquency status:
Over 90 DPD and still accruing		10,525	11,858
Nonaccrual loans		9,759	10,384
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		504,641	505,859
Over 90 DPD and still accruing		102	64
Nonaccrual loans		3,706	4,059
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		329,075	330,603
Over 90 DPD and still accruing		88	28
Nonaccrual loans		2,898	3,216
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		131,368	132,108
Over 90 DPD and still accruing		11	36
Nonaccrual loans		672	685
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		25,042	23,859
Over 90 DPD and still accruing		3	0
Nonaccrual loans		40	43
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		19,156	19,289
Over 90 DPD and still accruing		0	0
Nonaccrual loans		96	115
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans		15,670	16,731
PCI Loans Carrying Value [Member] | Total Commercial [Member]
By delinquency status:
PCI loans		363	677	$ 18,700
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
PCI loans		177	237
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
By delinquency status:
PCI loans		164	383
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
PCI loans		22	57
PCI Loans Carrying Value [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
PCI loans		0	0
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		477,198	476,266
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		308,652	308,166
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		126,215	126,793
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		24,450	23,408
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		17,881	17,899
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		27,443	29,593
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		20,423	22,437
Nonaccrual loans		2,898
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		5,153	5,315
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		592	451
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		1,275	1,390
Current-29 days past due (DPD) and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		499,482	500,748
Current-29 days past due (DPD) and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		325,001	326,765
Current-29 days past due (DPD) and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		130,566	131,165
Current-29 days past due (DPD) and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		24,969	23,776
Current-29 days past due (DPD) and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		18,946	19,042
30-89 days past due and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		1,351	988
30-89 days past due and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		1,088	594
30-89 days past due and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		119	222
30-89 days past due and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		30	40
30-89 days past due and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		$ 114	$ 132
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi66

Loans and Allowance for Credit Losses, Loans by Delinquency Status, Consumer (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2008
By delinquency status:
Loans	[1]	$ 958,405	$ 967,604
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		838	908
By delinquency status:
Loans		$ 453,401	$ 461,068
Real estate 1-4 family first mortgage [Member]
By delinquency status:
Financing Receivables Equal To Or Greater Than 180 Days Past Due Percentage Of Portfolio		0.60%	0.60%
Loans		$ 274,633	$ 275,579
Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		44,333	46,237
Credit Card [Member]
By delinquency status:
Loans		34,742	36,700
Automobile [Member]
By delinquency status:
Loans		60,408	62,286
Other revolving credit and installment [Member]
By delinquency status:
Loans		39,285	40,266
Loans Excluding Purchased Credit-Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		10,525	11,858
Loans Excluding Purchased Credit-Impaired Loans [Member] | Consumer Real Estate Loans Government Guaranteed Or Insured [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		9,585	10,883
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		438,094	445,014
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		259,360	259,561
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		44,299	46,201
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		34,742	36,700
Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		60,408	62,286
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		39,285	40,266
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans		15,670	16,731
PCI Loans Carrying Value [Member] | Total Consumer [Member]
By delinquency status:
PCI loans		15,307	16,054	$ 40,100
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans		15,273	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans		34	36
PCI Loans Carrying Value [Member] | Credit Card [Member]
By delinquency status:
PCI loans		0	0
PCI Loans Carrying Value [Member] | Automobile [Member]
By delinquency status:
PCI loans		0	0
PCI Loans Carrying Value [Member] | Other revolving credit and installment [Member]
By delinquency status:
PCI loans		0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Loans Government Guaranteed Or Insured [Member]
By delinquency status:
Loans		9,200	10,100
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		3,200	3,500
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		415,747	420,477
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		240,508	239,061
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		43,422	45,238
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		33,868	35,773
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		59,064	60,572
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		38,885	39,833
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		3,297	3,914
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		1,612	1,904
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		286	296
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		238	275
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		1,007	1,262
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		154	177
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		1,293	1,501
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		635	700
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		137	160
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		183	200
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		243	330
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		95	111
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		669	787
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		253	307
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		80	102
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		160	169
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		87	116
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		89	93
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		719	745
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		289	323
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		99	108
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		292	279
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		6	5
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		33	30
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		1,840	1,985
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		1,534	1,661
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		275	297
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		1	4
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		1	1
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		29	22
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		14,529	15,605
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		14,529	15,605
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		0	0
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		0	0
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		0	0
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		$ 0	$ 0
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi67

Loans and Allowance for Credit Losses, Loans by FICO Score, Consumer (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2008
By FICO:
Loans	[1]	$ 958,405	$ 967,604
Total Consumer [Member]
By FICO:
Loans		453,401	461,068
90 days or more past due and still accruing		838	908
Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		274,633	275,579
Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		44,333	46,237
Credit Card [Member]
By FICO:
Loans		34,742	36,700
Automobile [Member]
By FICO:
Loans		60,408	62,286
Other revolving credit and installment [Member]
By FICO:
Loans		39,285	40,266
Loans Excluding Purchased Credit-Impaired Loans [Member]
By FICO:
90 days or more past due and still accruing		10,525	11,858
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		438,094	445,014
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		259,360	259,561
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		44,299	46,201
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		34,742	36,700
Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		60,408	62,286
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		39,285	40,266
PCI Loans Carrying Value [Member]
By FICO:
PCI loans		15,670	16,731
PCI Loans Carrying Value [Member] | Total Consumer [Member]
By FICO:
PCI loans		15,307	16,054	$ 40,100
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans		15,273	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans		34	36
PCI Loans Carrying Value [Member] | Credit Card [Member]
By FICO:
PCI loans		0	0
PCI Loans Carrying Value [Member] | Automobile [Member]
By FICO:
PCI loans		0	0
PCI Loans Carrying Value [Member] | Other revolving credit and installment [Member]
By FICO:
PCI loans		0	0
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		22,588	23,696
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		6,260	6,720
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		2,123	2,591
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		3,352	3,475
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		9,906	9,934
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		947	976
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		16,102	18,187
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		4,256	5,400
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		1,501	1,917
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		2,943	3,109
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		6,393	6,705
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		1,009	1,056
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		28,307	32,937
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		8,081	10,975
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		2,934	3,747
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		5,371	5,678
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		9,763	10,204
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		2,158	2,333
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		43,971	52,649
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		16,503	23,300
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		5,663	6,432
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		7,080	7,382
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		10,826	11,233
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		3,899	4,302
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		56,627	70,515
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		28,250	38,832
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		7,106	9,413
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		7,339	7,632
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		8,525	8,769
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		5,407	5,869
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		80,188	141,240
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		51,813	103,608
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		7,993	14,929
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		5,823	6,191
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		7,945	8,164
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		6,614	8,348
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		158,965	72,057
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		124,534	49,508
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		16,237	6,391
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		2,792	2,868
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		6,720	6,856
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		8,682	6,434
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		8,891	10,086
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		5,134	5,613
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		742	781
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		42	365
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		330	421
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		2,643	2,906
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		7,926	8,042
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		0	0
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		0	0
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		0	0
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		0	0
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		7,926	8,042
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		14,529	15,605
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		14,529	15,605
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		0	0
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		0	0
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		0	0
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		$ 0	$ 0
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi68

Loans and Allowance for Credit Losses, Loans by Loan to Value Ratio, Consumer (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
High Value Properties, Threshold		$ 1
By LTV/CLTV:
Loans	[1]	958,405	$ 967,604
Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Nonaccrual loans		9,759	10,384
Residential Mortgage [Member]
By LTV/CLTV:
Loans		318,966	321,816
Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		303,659	305,762
Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
Loans		274,633	275,579
Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		259,360	259,561
Nonaccrual loans		4,743	4,962
Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
Loans		44,333	46,237
Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		44,299	46,201
Nonaccrual loans		1,153	1,206
PCI Loans Carrying Value [Member]
By LTV/CLTV:
PCI loans		15,670	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans		15,273	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans		34	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans		15,307	16,054
LTV 0-60% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		137,677	137,894
LTV 0-60% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		121,653	121,430
LTV 0-60% [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		16,024	16,464
LTV 60.01-80% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		116,607	116,988
LTV 60.01-80% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		101,956	101,726
LTV 60.01-80% [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		14,651	15,262
LTV 80.01-100% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		24,818	24,560
LTV 80.01-100% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		16,506	15,795
LTV 80.01-100% [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		8,312	8,765
LTV 100.01-120% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		5,798	6,233
LTV 100.01-120% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		2,459	2,644
LTV 100.01-120% [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		3,339	3,589
LTV greater than 120% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		2,507	2,679
LTV greater than 120% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		1,025	1,066
LTV greater than 120% [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		1,482	1,613
No LTV/CLTV available [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		1,723	1,803
No LTV/CLTV available [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		1,232	1,295
No LTV/CLTV available [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		491	508
Government Insured Or Guaranteed [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		14,529	15,605
Government Insured Or Guaranteed [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		14,529	15,605
Government Insured Or Guaranteed [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		$ 0	$ 0
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi69

Loans and Allowance for Credit Losses, Nonaccrual (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	[1]	$ 958,405	$ 967,604
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		505,004	506,536
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		329,252	330,840
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		131,532	132,491
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		25,064	23,916
Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		19,156	19,289
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		453,401	461,068
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		274,633	275,579
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		44,333	46,237
Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		60,408	62,286
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		39,285	40,266
Residential Real Estate [Member]
Nonaccrual Loans [Abstract]
Mortgage Loans in Process of Foreclosure, Amount		7,800	8,100
Government Guaranteed Mortgage Loans upon Foreclosure Receivable [Member]
Nonaccrual Loans [Abstract]
Mortgage Loans in Process of Foreclosure, Amount		4,700	4,800
Mortgages held for sale [Member] | Real estate 1-4 family first mortgage [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans		145	149
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans		9,759	10,384
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		504,641	505,859
Nonaccrual Loans [Abstract]
Nonaccrual loans		3,706	4,059
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		329,075	330,603
Nonaccrual Loans [Abstract]
Nonaccrual loans		2,898	3,216
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		131,368	132,108
Nonaccrual Loans [Abstract]
Nonaccrual loans		672	685
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		25,042	23,859
Nonaccrual Loans [Abstract]
Nonaccrual loans		40	43
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		19,156	19,289
Nonaccrual Loans [Abstract]
Nonaccrual loans		96	115
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		438,094	445,014
Nonaccrual Loans [Abstract]
Nonaccrual loans		6,053	6,325
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		259,360	259,561
Nonaccrual Loans [Abstract]
Nonaccrual loans		4,743	4,962
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		44,299	46,201
Nonaccrual Loans [Abstract]
Nonaccrual loans		1,153	1,206
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		60,408	62,286
Nonaccrual Loans [Abstract]
Nonaccrual loans		101	106
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		39,285	40,266
Nonaccrual Loans [Abstract]
Nonaccrual loans		56	51
Criticized [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		27,443	29,593
Criticized [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		20,423	22,437
Nonaccrual Loans [Abstract]
Nonaccrual loans		2,898
Criticized [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		5,153	5,315
Criticized [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		592	451
Criticized [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		$ 1,275	$ 1,390
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Loans and Allowance for Credi70

Loans and Allowance for Credit Losses, 90 Days or More Past Due and Still Accruing (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Total Consumer [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	$ 838	$ 908
Financing Receivable Acquired With Deteriorated Credit Quality [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	1,800	2,000
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	10,525	11,858
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | FHA Insured/VA Guaranteed [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	9,585	10,883
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Student Loans guaranteed under FFELP [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	0	3
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Commercial [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	102	64
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial and Industrial Loans [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	88	28
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial real estate mortgage [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	11	36
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Real Estate Construction [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	3	0
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	940	972
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Total Commercial [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	102	64
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Commercial and Industrial Loans [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	88	28
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Commercial real estate mortgage [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	11	36
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Commercial Real Estate Construction [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	3	0
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Total Consumer [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	838	908
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Real estate 1-4 family first mortgage [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	149	175
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Real estate 1-4 family junior lien mortgage [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	42	56
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Credit Card [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	453	452
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Automobile [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	79	112
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total, not government insured/guaranteed [Member] | Other revolving credit and installment [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	$ 115	$ 113

Loans and Allowance for Credi71

Loans and Allowance for Credit Losses, Impaired Loans (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Impaired Loans [Abstract]
Unpaid principal balance	$ 25,639	$ 26,547
Impaired loans	21,551	22,377
Impaired loans with related allowance for credit losses	15,865	16,604
Related allowance for credit losses	2,313	2,593
Loans and Leases Receivable, Impaired, Commitment to Lend	630	403
Trial modifications [Member]
Impaired Loans [Abstract]
Impaired loans	261	299
Consumer Real Estate Loans Government Guaranteed Or Insured [Member]
Impaired Loans [Abstract]
Impaired loans	1,500	1,500
Total Commercial [Member]
Impaired Loans [Abstract]
Unpaid principal balance	6,838	7,148
Impaired loans	5,076	5,372
Impaired loans with related allowance for credit losses	4,726	5,026
Related allowance for credit losses	859	1,000
Commercial and Industrial Loans [Member]
Impaired Loans [Abstract]
Unpaid principal balance	4,833	5,058
Impaired loans	3,508	3,742
Impaired loans with related allowance for credit losses	3,158	3,418
Related allowance for credit losses	571	675
Commercial real estate mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	1,722	1,777
Impaired loans	1,393	1,418
Impaired loans with related allowance for credit losses	1,393	1,396
Related allowance for credit losses	236	280
Commercial Real Estate Construction [Member]
Impaired Loans [Abstract]
Unpaid principal balance	134	167
Impaired loans	73	93
Impaired loans with related allowance for credit losses	73	93
Related allowance for credit losses	14	22
Commercial Lease Financing Receivable [Member]
Impaired Loans [Abstract]
Unpaid principal balance	149	146
Impaired loans	102	119
Impaired loans with related allowance for credit losses	102	119
Related allowance for credit losses	38	23
Total Consumer [Member]
Impaired Loans [Abstract]
Unpaid principal balance	18,801	19,399
Impaired loans	16,475	17,005
Impaired loans with related allowance for credit losses	11,139	11,578
Related allowance for credit losses	1,454	1,593
Real estate 1-4 family first mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	15,891	16,438
Impaired loans	13,872	14,362
Impaired loans with related allowance for credit losses	9,075	9,475
Related allowance for credit losses	996	1,117
Real estate 1-4 family junior lien mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	2,339	2,399
Impaired loans	2,106	2,156
Impaired loans with related allowance for credit losses	1,628	1,681
Related allowance for credit losses	326	350
Credit Card [Member]
Impaired Loans [Abstract]
Unpaid principal balance	308	300
Impaired loans	308	300
Impaired loans with related allowance for credit losses	308	300
Related allowance for credit losses	107	104
Automobile [Member]
Impaired Loans [Abstract]
Unpaid principal balance	146	153
Impaired loans	80	85
Impaired loans with related allowance for credit losses	29	31
Related allowance for credit losses	7	5
Other revolving credit and installment [Member]
Impaired Loans [Abstract]
Unpaid principal balance	117	109
Impaired loans	109	102
Impaired loans with related allowance for credit losses	99	91
Related allowance for credit losses	$ 18	$ 17

Loans and Allowance for Credi72

Loans and Allowance for Credit Losses, Impaired Loans, Average Recorded Investment and Interest Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	$ 22,026	$ 24,516
Recognized interest income	295	321
Interest income:
Cash basis of accounting	78	95
Other	217	226
Total Commercial [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	5,272	4,743
Recognized interest income	61	53
Commercial and Industrial Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	3,675	2,766
Recognized interest income	33	19
Commercial real estate mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	1,394	1,772
Recognized interest income	27	32
Commercial Real Estate Construction [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	84	130
Recognized interest income	1	2
Commercial Lease Financing Receivable [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	119	75
Recognized interest income	0	0
Total Consumer [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	16,754	19,773
Recognized interest income	234	268
Real estate 1-4 family first mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	14,132	16,911
Recognized interest income	190	221
Real estate 1-4 family junior lien mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	2,131	2,382
Recognized interest income	31	34
Credit Card [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	302	297
Recognized interest income	8	9
Automobile [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	83	101
Recognized interest income	3	3
Other revolving credit and installment [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	106	82
Recognized interest income	$ 2	$ 1

Loans and Allowance for Credi73

Loans and Allowance for Credit Losses, Troubled Debt Restructurings Modifications by Type (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Net loans	$ 947,237		$ 956,185
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,699	$ 1,745
Financial effects of modifications
Charge-offs	$ 87	$ 138
Weighted average interest rate reduction	5.27%	3.88%
Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,135	$ 983
Financial effects of modifications
Charge-offs	$ 65	$ 106
Weighted average interest rate reduction	0.95%	1.71%
Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 564	$ 762
Financial effects of modifications
Charge-offs	$ 22	$ 32
Weighted average interest rate reduction	5.72%	4.94%
Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 934	$ 752
Financial effects of modifications
Charge-offs	$ 65	$ 106
Weighted average interest rate reduction	0.82%	1.89%
Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 195	$ 183
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	1.00%	1.13%
Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 3	$ 44
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	2.00%	0.00%
Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 3	$ 4
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	0.00%	0.00%
Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 437	$ 611
Financial effects of modifications
Charge-offs	$ 9	$ 13
Weighted average interest rate reduction	2.60%	2.81%
Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 57	$ 62
Financial effects of modifications
Charge-offs	$ 6	$ 10
Weighted average interest rate reduction	2.95%	2.92%
Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 57	$ 44
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	12.22%	11.94%
Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 16	$ 19
Financial effects of modifications
Charge-offs	$ 7	$ 8
Weighted average interest rate reduction	6.42%	6.54%
Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 14	$ 11
Financial effects of modifications
Charge-offs	$ 0	$ 1
Weighted average interest rate reduction	7.29%	6.10%
Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ (17)	$ 15
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	0.00%	0.00%
Modification to principal [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 88	$ 144
Modification to principal [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	42
Modification to principal [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	88	102
Modification to principal [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	42
Modification to principal [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	74	96
Modification to principal [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	13	6
Modification to principal [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1	0
Modification to principal [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Contractual Interest Rate Reduction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	184	252
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	20	102
Contractual Interest Rate Reduction [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	164	150
Contractual Interest Rate Reduction [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	6	78
Contractual Interest Rate Reduction [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	14	24
Contractual Interest Rate Reduction [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Contractual Interest Rate Reduction [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Contractual Interest Rate Reduction [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	72	65
Contractual Interest Rate Reduction [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	21	29
Contractual Interest Rate Reduction [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	57	44
Contractual Interest Rate Reduction [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	4
Contractual Interest Rate Reduction [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	11	8
Contractual Interest Rate Reduction [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modifications, other concessions [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,427	1,349
Modifications, other concessions [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,115	839
Modifications, other concessions [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	312	510
Modifications, other concessions [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	928	632
Modifications, other concessions [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	181	159
Modifications, other concessions [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	44
Modifications, other concessions [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	4
Modifications, other concessions [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	291	450
Modifications, other concessions [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	23	27
Modifications, other concessions [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modifications, other concessions [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	12	15
Modifications, other concessions [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	3
Modifications, other concessions [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	(17)	15
Modification of recorded investment related to interest rate reduction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	218	311
Modification of recorded investment related to interest rate reduction [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	20	102
Modification of recorded investment related to interest rate reduction [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	198	209
Modification of recorded investment related to interest rate reduction [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	6	78
Modification of recorded investment related to interest rate reduction [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	14	24
Modification of recorded investment related to interest rate reduction [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification of recorded investment related to interest rate reduction [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification of recorded investment related to interest rate reduction [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	103	119
Modification of recorded investment related to interest rate reduction [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	24	34
Modification of recorded investment related to interest rate reduction [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	57	44
Modification of recorded investment related to interest rate reduction [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	4
Modification of recorded investment related to interest rate reduction [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	11	8
Modification of recorded investment related to interest rate reduction [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Troubled Debt Restructuring Outstanding Balance [Member]
Financing Receivable, Modifications [Line Items]
Net loans	20,100		$ 20,800
Loans remodified [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	657	348
Principal Forgiveness [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 9	$ 19

Loans and Allowance for Credi74

Loans and Allowance for Credit Losses, Troubled Debt Restructurings, Current Defaults (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	$ 131	$ 100
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	62	25
Commercial real estate mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	21	20
Commercial Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	0	2
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	83	47
Real estate 1-4 family first mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	25	31
Real estate 1-4 family junior lien mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	4	5
Credit Card [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	15	13
Automobile [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	3	3
Other revolving credit and installment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	1	1
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	$ 48	$ 53

Loans and Allowance for Credi75

Loans and Allowance for Credit Losses, PCI Loans Outstanding (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2008
PCI Loans UPB [Member]
PCI loans [Abstract]
Total PCI loans (unpaid principal balance)	$ 22,855	$ 24,136	$ 98,200
PCI Loans UPB [Member] | Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	19,977	20,803
PCI Loans UPB [Member] | Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	184	192
PCI Loans Carrying Value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	15,670	16,731
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	22	57
PCI Loans Carrying Value [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	363	677	18,700
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	177	237
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	15,273	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	34	36
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	164	383
PCI Loans Carrying Value [Member] | Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 15,307	$ 16,054	$ 40,100

Loans and Allowance for Credi76

Loans and Allowance for Credit Losses, PCI, Accretable Yield (Details) - USD ($) $ in Millions	3 Months Ended	96 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Change in accretable yield related to PCI loans [Abstract]
Total, beginning of period	$ 11,216	$ 10,447
Change in accretable yield due to acquisitions	2	159
Accretion into interest income	(357)	(15,577)
Accretion into noninterest income due to sales	(25)	(467)
Reclassification from nonaccretable difference for loans with improving credit-related cash flows	406	10,955
Changes in expected cash flows that do not affect nonaccretable difference	(927)	5,699
Total, end of period	$ 10,315	$ 11,216

Loans and Allowance for Credi77

Loans and Allowance for Credit Losses, PCI, by Credit Quality Indicator (Details) - Receivables Acquired with Deteriorated Credit Quality [Member] - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 363	$ 677
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	177	237
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	164	383
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	22	57
Pass [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	164	402
Pass [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	21	92
Pass [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	129	263
Pass [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	14	47
Criticized [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	199	275
Criticized [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	156	145
Criticized [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	35	120
Criticized [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 8	$ 10

Loans and Allowance for Credi78

Loans and Allowance for Credit Losses, PCI, by Delinquency Status, Commercial (Details) - Receivables Acquired with Deteriorated Credit Quality [Member] - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Total Commercial [Member]
By delinquency status:
Over 90 DPD and still accruing	$ 25	$ 29
PCI loans	363	677
Commercial and Industrial Loans [Member]
By delinquency status:
Over 90 DPD and still accruing	0	0
PCI loans	177	237
Commercial real estate mortgage [Member]
By delinquency status:
Over 90 DPD and still accruing	17	20
PCI loans	164	383
Commercial Real Estate Construction [Member]
By delinquency status:
Over 90 DPD and still accruing	8	9
PCI loans	22	57
Current-29 days past due (DPD) and still accruing [Member] | Total Commercial [Member]
By delinquency status:
PCI loans	336	636
Current-29 days past due (DPD) and still accruing [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
PCI loans	175	235
Current-29 days past due (DPD) and still accruing [Member] | Commercial real estate mortgage [Member]
By delinquency status:
PCI loans	147	353
Current-29 days past due (DPD) and still accruing [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
PCI loans	14	48
30-89 days past due and still accruing [Member] | Total Commercial [Member]
By delinquency status:
PCI loans	2	12
30-89 days past due and still accruing [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
PCI loans	2	2
30-89 days past due and still accruing [Member] | Commercial real estate mortgage [Member]
By delinquency status:
PCI loans	0	10
30-89 days past due and still accruing [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
PCI loans	$ 0	$ 0

Loans and Allowance for Credi79

Loans and Allowance for Credit Losses, PCI, by Delinquency Status, Consumer (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
PCI Loans UPB [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	$ 19,977	$ 20,803
PCI Loans UPB [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	184	192
PCI Loans UPB [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	20,161	20,995
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans	15,670	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	15,273	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	34	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	15,307	16,054
Current-29 days past due (DPD) [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	15,851	16,095
Current-29 days past due (DPD) [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	167	171
Current-29 days past due (DPD) [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	16,018	16,266
Financing Receivables, 30 to 59 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	1,276	1,488
Financing Receivables, 30 to 59 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	6	7
Financing Receivables, 30 to 59 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	1,282	1,495
Financing Receivables, 60 to 89 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	572	668
Financing Receivables, 60 to 89 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	2	2
Financing Receivables, 60 to 89 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	574	670
90-119 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	185	233
90-119 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	1	2
90-119 Days Past Due [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	186	235
120-179 DPD member [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	209	238
120-179 DPD member [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	1	2
120-179 DPD member [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	210	240
180 plus DPD [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	1,884	2,081
180 plus DPD [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	7	8
180 plus DPD [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	$ 1,891	$ 2,089

Loans and Allowance for Credi80

Loans and Allowance for Credit Losses, PCI, by FICO Score, Consumer (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
PCI Loans UPB [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	$ 19,977	$ 20,803
PCI Loans UPB [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	184	192
PCI Loans UPB [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	20,161	20,995
PCI Loans Carrying Value [Member]
By FICO:
PCI loans	15,670	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	15,273	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	34	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	15,307	16,054
FICO less than 600 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	5,022	4,292
FICO less than 600 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	46	46
FICO less than 600 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	5,068	4,338
FICO 600-639 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	2,703	3,001
FICO 600-639 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	24	26
FICO 600-639 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	2,727	3,027
FICO 640-679 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	3,075	3,972
FICO 640-679 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	34	35
FICO 640-679 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	3,109	4,007
FICO 680-719 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	2,653	3,170
FICO 680-719 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	34	37
FICO 680-719 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	2,687	3,207
FICO 720-759 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	1,956	1,767
FICO 720-759 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	24	24
FICO 720-759 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	1,980	1,791
FICO 760-799 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	952	962
FICO 760-799 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	12	15
FICO 760-799 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	964	977
FICO 800 or more [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	457	254
FICO 800 or more [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	7	4
FICO 800 or more [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	464	258
No FICO available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	3,159	3,385
No FICO available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	3	5
No FICO available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	$ 3,162	$ 3,390

Loans and Allowance for Credi81

Loans and Allowance for Credit Losses, PCI, by Loan to Value Ratio, Consumer (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
PCI Loans UPB [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	$ 19,977	$ 20,803
PCI Loans UPB [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	184	192
PCI Loans UPB [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	20,161	20,995
PCI Loans Carrying Value [Member]
By LTV/CLTV:
PCI loans	15,670	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	15,273	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	34	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	15,307	16,054
LTV 0-60% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	7,710	7,513
LTV 0-60% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	40	38
LTV 0-60% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	7,750	7,551
LTV 60.01-80% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	8,490	9,000
LTV 60.01-80% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	74	76
LTV 60.01-80% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	8,564	9,076
LTV 80.01-100% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	3,063	3,458
LTV 80.01-100% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	50	54
LTV 80.01-100% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	3,113	3,512
LTV 100.01-120% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	575	669
LTV 100.01-120% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	15	18
LTV 100.01-120% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	590	687
LTV greater than 120% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	137	161
LTV greater than 120% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	5	5
LTV greater than 120% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	142	166
No LTV/CLTV available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	2	2
No LTV/CLTV available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	0	1
No LTV/CLTV available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	$ 2	$ 3

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Components of Other Assets [Line Items]
Cost method investments		$ 8,122		$ 8,397
Equity method investments		15,534		15,708
Other assets, carried at fair value		3,780		3,275
Total nonmarketable equity investments		27,436		27,380
Corporate/bank-owned life insurance		19,368		19,325
Accounts receivable (3)		31,570		31,056
Interest receivable		5,486		5,339
Customer relationship and other amortized intangibles		3,837		4,115
Non-residential real estate		381		403
Operating lease assets		9,837		10,089
Due from customers on acceptances		191		196
Other		10,533		17,469
Other assets	[1]	107,761		114,541
Other Assets Textual [Abstract]
Income (loss) from affordable housing projects, equity method investments		230	$ 202
Low income housing tax credit (LIHTC) investment total tax benefits		347	307
Low income housing tax credit (LIHTC) investment tax credits		261	230
Low income housing tax credit (LIHTC) investment liability for unfunded commitments		$ 3,400		3,600
Low income housing tax credit (LIHTC) investment, year liability is expected to be paid		3 years
Income (Expense) Related to Nonmarketable Equity Investments [Abstract]
Net realized gains from nonmarketable equity investments		$ 287	185
All other		(45)	(186)
Total		242	$ (1)
Government insured/guaranteed [Member]
Components of Other Assets [Line Items]
Residential real estate		179		197
Non-government insured/guaranteed [Member]
Components of Other Assets [Line Items]
Residential real estate		345		378
Core deposit intangibles [Member]
Components of Other Assets [Line Items]
Customer relationship and other amortized intangibles		1,407		1,620
Customer relationship and other amortized intangibles [Member]
Components of Other Assets [Line Items]
Customer relationship and other amortized intangibles		1,028		1,089
Auction rate securities [Member]
Components of Other Assets [Line Items]
Cost method investments		453		525
Federal bank stock [Member]
Components of Other Assets [Line Items]
Cost method investments		6,185		6,407
Low Income Housing Tax Credit Equity Method Investments [Member]
Components of Other Assets [Line Items]
Equity method investments		9,624		9,714
Private equity and other [Member]
Components of Other Assets [Line Items]
Cost method investments		1,484		1,465
Equity method investments		3,620		3,635
Tax Advantaged Renewable Energy [Member]
Components of Other Assets [Line Items]
Equity method investments		2,013		2,054
New Market Tax Credit and Other [Member]
Components of Other Assets [Line Items]
Equity method investments		$ 277		$ 305
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Securitizations and Variable 83

Securitizations and Variable Interest Entities, Balance Sheet Transactions with VIEs (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		$ 19,698	$ 20,729	$ 19,084	$ 19,111
Federal funds sold, securities purchased under resale agreements and other short-term investments		308,747	266,038
Trading assets		80,326	74,397
Investment securities		407,159	407,519
Loans	[1]	958,405	967,604
Mortgage servicing rights		13,208	12,959
Derivative asset		12,564	14,498
Other assets	[1]	107,761	114,541
Total assets	[2]	1,951,564	1,930,115
Short-term borrowings		94,871	96,781
Derivative liabilities		12,461	14,492
Accrued expenses and other liabilities		59,831	57,189
Long-term debt		256,468	255,077
Total liabilities	[3]	1,749,075	1,729,618
Noncontrolling interests		989	916
VIEs that we consolidate recourse [member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Total liabilities		0	0
VIEs that we do not consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		0	0
Federal funds sold, securities purchased under resale agreements and other short-term investments		0	0
Trading assets		1,546	2,034
Investment securities		7,221	8,530
Loans		6,527	6,698
Mortgage servicing rights		13,704	13,386
Derivative asset		68	91
Other assets		10,148	10,281
Total assets		39,214	41,020
Short-term borrowings		0	0
Derivative liabilities		57	59
Accrued expenses and other liabilities		287	306
Long-term debt		3,351	3,598
Total liabilities		3,695	3,963
Noncontrolling interests		0	0
Net assets		35,519	37,057
VIEs that we consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		128	168
Federal funds sold, securities purchased under resale agreements and other short-term investments		485	74
Trading assets		126	130
Investment securities		0	0
Loans		13,056	12,589
Mortgage servicing rights		0	0
Derivative asset		1	1
Other assets		361	452
Total assets		14,157	13,414
Short-term borrowings		0	0
Derivative liabilities		30	33
Accrued expenses and other liabilities		103	107
Long-term debt		3,640	3,694
Total liabilities		3,773	3,834
Noncontrolling interests		132	138
Net assets		10,252	9,442
Transfers that we account for as secured borrowings [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		0	0
Federal funds sold, securities purchased under resale agreements and other short-term investments		0	0
Trading assets		201	201
Investment securities		650	786
Loans		127	138
Mortgage servicing rights		0	0
Derivative asset		0	0
Other assets		10	11
Total assets		988	1,136
Short-term borrowings		783	905
Derivative liabilities		0	0
Accrued expenses and other liabilities		2	2
Long-term debt		129	136
Total liabilities		914	1,043
Noncontrolling interests		0	0
Net assets		74	93
Total VIE [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		128	168
Federal funds sold, securities purchased under resale agreements and other short-term investments		485	74
Trading assets		1,873	2,365
Investment securities		7,871	9,316
Loans		19,710	19,425
Mortgage servicing rights		13,704	13,386
Derivative asset		69	92
Other assets		10,519	10,744
Total assets		54,359	55,570
Short-term borrowings		783	905
Derivative liabilities		87	92
Accrued expenses and other liabilities		392	415
Long-term debt		7,120	7,428
Total liabilities		8,382	8,840
Noncontrolling interests		132	138
Net assets		$ 45,845	$ 46,592
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.
[2]	Our consolidated assets at March 31, 2017, and December 31, 2016, include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash and due from banks, $128 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $485 million and $74 million; Trading assets, $126 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $13.1 billion and $12.6 billion; Derivative assets, $1 million and $1 million; Other assets, $361 million and $452 million; and Total assets, $14.2 billion and $13.4 billion, respectively.
[3]	Our consolidated liabilities at March 31, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $30 million and $33 million; Accrued expenses and other liabilities, $103 million and $107 million; Long-term debt, $3.6 billion and $3.7 billion; and Total liabilities, $3.8 billion at both period ends, respectively.

Securitizations and Variable 84

Securitizations and Variable Interest Entities, Unconsolidated VIEs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Variable Interest Entity [Line Items]
Total VIE assets	$ 1,389,580		$ 1,395,604
Securitizations and Variable Interest Entities Textual [Abstract]
Carrying value of delinquent loans eligible for repurchase	$ 888		$ 1,200
Percentage of underlying collateral rated as investment grade	100.00%		100.00%
Principal amount that would be payable to securitization vehicles	$ 888		$ 1,200
Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,176,819		1,166,296
Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Total VIE assets	17,459		18,805
Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Total VIE assets	152,603		166,596
Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,336		1,472
Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,527		1,545
Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Total VIE assets	8,039		9,152
Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Total VIE assets	29,808		29,713
Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Total VIE assets	49		78
Investment Funds [Member]
Variable Interest Entity [Line Items]
Total VIE assets	220		214
Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,720		1,733
VIEs that we do not consolidate [Member] | Waived fees [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Financial support provided to a nonconsolidated legal entity	14	$ 30
Debt and equity interests [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	25,442		27,543
Maximum exposure to loss	25,442		27,543
Debt and equity interests [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	2,539		3,026
Maximum exposure to loss	2,539		3,026
Debt and equity interests [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	824		873
Maximum exposure to loss	824		873
Debt and equity interests [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	3,115		4,258
Maximum exposure to loss	3,115		4,258
Debt and equity interests [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Debt and equity interests [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	1,489		1,507
Maximum exposure to loss	1,489		1,507
Debt and equity interests [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	6,142		6,522
Maximum exposure to loss	6,142		6,522
Debt and equity interests [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	10,642		10,669
Maximum exposure to loss	10,642		10,669
Debt and equity interests [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	10		10
Maximum exposure to loss	10		10
Debt and equity interests [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	52		48
Maximum exposure to loss	52		48
Debt and equity interests [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	629		630
Maximum exposure to loss	629		630
Servicing assets [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	13,704		13,386
Maximum exposure to loss	13,704		13,386
Servicing assets [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	12,750		12,434
Maximum exposure to loss	12,750		12,434
Servicing assets [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	101		109
Maximum exposure to loss	101		109
Servicing assets [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	853		843
Maximum exposure to loss	853		843
Servicing assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	11		31
Maximum exposure to loss	161		187
Derivative [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	62		87
Maximum exposure to loss	72		94
Derivative [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(51)		(56)
Maximum exposure to loss	89		93
Other commitments and guarantees [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(3,638)		(3,903)
Maximum exposure to loss	11,751		11,748
Other commitments and guarantees [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(226)		(232)
Maximum exposure to loss	929		979
Other commitments and guarantees [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(2)		(2)
Maximum exposure to loss	2		2
Other commitments and guarantees [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(34)		(35)
Maximum exposure to loss	9,783		9,566
Other commitments and guarantees [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(25)		(25)
Maximum exposure to loss	25		25
Other commitments and guarantees [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Other commitments and guarantees [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	71		72
Other commitments and guarantees [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(3,351)		(3,609)
Maximum exposure to loss	941		1,104
Other commitments and guarantees [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Other commitments and guarantees [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Other commitments and guarantees [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Total exposure [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	51,058		52,864
Total exposure [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	16,218		16,439
Total exposure [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	927		984
Total exposure [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	13,823		14,761
Total exposure [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	25		25
Total exposure [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	1,489		1,507
Total exposure [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	6,213		6,594
Total exposure [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	11,583		11,773
Total exposure [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	10		10
Total exposure [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	52		48
Total exposure [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	718		723
Net assets [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	35,519		37,057
Net assets [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	15,063		15,228
Net assets [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	923		980
Net assets [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	3,996		5,153
Net assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(25)		(25)
Net assets [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	1,489		1,507
Net assets [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	6,142		6,522
Net assets [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	7,291		7,060
Net assets [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	10		10
Net assets [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	52		48
Net assets [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	578		574
Equity Interests [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	10,100		10,300
Other Investments [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities Available for Sale Portfolio of ARS issued by VIEs	453		453
Trust Preferred Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(2,100)		(2,100)
Trust Preferred Securities [Member] | Preferred Stock [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Carrying value - equity	$ 2,500		$ 2,500

Securitizations and Variable 85

Securitizations and Variable Interest Entities, Cash Flows From Sales and Securitization Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Securitizations and Variable Interest Entities Textual [Abstract]
Amount paid to repurchase loans from securitization vehicles	$ 2,300	$ 2,900
Net gain from sale of assets securitizations	132	195
Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount transferred related to mortgages to unconsolidated VIE	55,500	37,300
Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Proceeds from securitizations and whole loan sales	58,257	45,016
Fees from servicing rights retained	854	881
Cash flows from other interests held	834	407
Servicing advances, net of repayments	(142)	(68)
Other financial assets [Member]
Cash Flow Securitizations [Abstract]
Proceeds from securitizations and whole loan sales	21	50
Fees from servicing rights retained	0	0
Cash flows from other interests held	0	1
Servicing advances, net of repayments	0	0
Commercial Loans [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Net gain from sale of assets securitizations	96	135
Amount transferred related to mortgages to unconsolidated VIE	3,300	8,100
Non-agency securitizations and whole loan transactions [Member] | Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	2	3
Non-agency securitizations and whole loan transactions [Member] | Other financial assets [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	0	0
Agency securitizations | Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	23	47
Agency securitizations | Other financial assets [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	0	0
Fair Value, Inputs, Level 3 [Member] | Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount of servicing asset at fair value	546	315
Amount of liability for repurchase reserves at fair value	8	7
Fair Value, Inputs, Level 3 [Member] | Commercial Loans [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount of servicing asset at fair value	45	97
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities, at fair value	2,800	832
Fair Value, Inputs, Level 2 [Member] | Commercial Loans [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities, at fair value	$ 0	$ 86

Securitizations and Variable 86

Securitizations and Variable Interest Entities, Residential Mortgage Servicing Rights (Details) - Residential mortgage servicing rights [Member] - $ / loan	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Prepayment speed	10.30%	13.00%
Discount rate	6.80%	6.80%
Cost to service ($ per loan)	134	146

Securitizations and Variable 87

Securitizations and Variable Interest Entities, Retained Interests from Unconsolidated VIEs (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)$ / loan	Dec. 31, 2016USD ($)$ / loan
Residential mortgage servicing rights [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 13,208	$ 12,959
Expected weighted-average life (in years)	6 years 4 months 24 days	6 years 3 months 18 days
Key economic assumptions:
Prepayment speed assumption	10.20%	10.30%
Decrease in fair value from:
10% adverse change	$ 570	$ 583
25% adverse change	$ 1,353	$ 1,385
Discount rate assumption	6.90%	6.80%
Decrease in fair value from:
100 basis point increase	$ 658	$ 649
200 basis point increase	$ 1,257	$ 1,239
Cost to service assumption ($ per loan) | $ / loan	150	155
Decrease in fair value from:
10% adverse change	$ 498	$ 515
25% adverse change	1,246	1,282
Interest-Only Strips [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 26	$ 28
Expected weighted-average life (in years)	3 years 10 months 24 days	3 years 10 months 24 days
Key economic assumptions:
Prepayment speed assumption	17.20%	17.40%
Decrease in fair value from:
10% adverse change	$ 1	$ 1
25% adverse change	$ 2	$ 2
Discount rate assumption	13.60%	13.30%
Decrease in fair value from:
100 basis point increase	$ 1	$ 1
200 basis point increase	1	1
Subordinated bonds [Member] | Commercial securitizations [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 346	$ 249
Expected weighted-average life (in years)	4 years 6 months 18 days	3 years 1 month 6 days
Decrease in fair value from:
Discount rate assumption	4.30%	5.20%
Decrease in fair value from:
100 basis point increase	$ 12	$ 7
200 basis point increase	$ 23	$ 12
Decrease in fair value from:
Credit loss assumption	3.40%	4.70%
Decrease in fair value from:
10% higher losses	$ 0	$ 0
25% higher losses	0	0
Subordinated bonds [Member] | Consumer securitizations [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 0	$ 1
Expected weighted-average life (in years)	0 years	8 years 3 months 18 days
Key economic assumptions:
Prepayment speed assumption	0.00%	13.50%
Decrease in fair value from:
10% adverse change	$ 0	$ 0
25% adverse change	$ 0	$ 0
Discount rate assumption	0.00%	10.70%
Decrease in fair value from:
100 basis point increase	$ 0	$ 0
200 basis point increase	$ 0	$ 0
Decrease in fair value from:
Credit loss assumption	0.00%	3.00%
Decrease in fair value from:
10% higher losses	$ 0	$ 0
25% higher losses	0	0
Senior bonds [Member] | Commercial securitizations [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 545	$ 552
Expected weighted-average life (in years)	5 years 6 months 18 days	5 years 1 month 6 days
Decrease in fair value from:
Discount rate assumption	2.90%	2.70%
Decrease in fair value from:
100 basis point increase	$ 24	$ 23
200 basis point increase	$ 47	$ 45
Decrease in fair value from:
Credit loss assumption	0.00%	0.00%
Decrease in fair value from:
10% higher losses	$ 0	$ 0
25% higher losses	0	0
Commercial mortgage servicing [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 2,100	$ 2,000
Securitizations and Variable Interest Entities Textual [Abstract]
Percentage of adverse change in interest rate	25.00%	25.00%
Decrease in fair value from 25% adverse change in interest rate	$ 270	$ 259
VIEs that we do not consolidate [Member] | Loans [Member]
Decrease in fair value from:
200 basis point increase	129	154
Securitizations and Variable Interest Entities Textual [Abstract]
Loans receivable	$ 3,100	$ 3,200

Securitizations and Variable 88

Securitizations and Variable Interest Entities, Off-Balance Sheet Loans Sold or Securitized (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	$ 1,262,807		$ 1,266,936
Delinquent loans and foreclosed assets	18,278		19,778
Net charge-offs	495	$ 370
FNMA, FHLMC and GNMA [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,200,000		1,200,000
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	1,200		1,300
Delinquent loans	9,500		9,800
Total Commercial [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	100,695		106,745
Delinquent loans and foreclosed assets	3,076		3,325
Net charge-offs	295	83
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	1,500		1,700
Commercial real estate mortgage [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	100,695		106,745
Delinquent loans and foreclosed assets	3,076		3,325
Net charge-offs	295	83
Total Consumer [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,162,112		1,160,191
Delinquent loans and foreclosed assets	15,202		16,453
Net charge-offs	200	287
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	1,600		1,800
Real estate 1-4 family first mortgage [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,162,112		1,160,191
Delinquent loans and foreclosed assets	15,202		$ 16,453
Net charge-offs	$ 200	$ 287

Securitizations and Variable 89

Securitizations and Variable Interest Entities, Transactions with Consolidated VIEs and Secured Borrowings (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Assets	[1]	$ 1,951,564	$ 1,930,115
Liabilities	[2]	(1,749,075)	(1,729,618)
Noncontrolling interests		(989)	(916)
Total secured borrowings [Member]
Variable Interest Entity [Line Items]
Total VIE assets		1,459	1,612
Total secured borrowings [Member] | Municipal tender option bond securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		1,328	1,473
Total secured borrowings [Member] | Residential mortgage securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		131	139
Consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Total VIE assets		14,766	14,017
Assets		14,157	13,414
Liabilities		(3,773)	(3,834)
Noncontrolling interests		(132)	(138)
Net assets		10,252	9,442
Consolidated VIEs [Member] | Commercial real estate loans [Member]
Variable Interest Entity [Line Items]
Total VIE assets		1,747	1,516
Consolidated VIEs [Member] | Commercial and Industrial Loans and Leases [Member]
Variable Interest Entity [Line Items]
Total VIE assets		9,504	8,821
Consolidated VIEs [Member] | Nonconforming residential mortgage loan securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		3,189	3,349
Consolidated VIEs [Member] | Structured asset finance [Member]
Variable Interest Entity [Line Items]
Total VIE assets		22	23
Consolidated VIEs [Member] | Investment funds [Member]
Variable Interest Entity [Line Items]
Total VIE assets		147	142
Consolidated VIEs [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Total VIE assets		157	166
Total secured borrowings and consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Total VIE assets		16,225	15,629
Carrying value [Member] | Total secured borrowings [Member]
Variable Interest Entity [Line Items]
Assets		988	1,136
Liabilities		(914)	(1,043)
Noncontrolling interests		0	0
Net assets		74	93
Carrying value [Member] | Total secured borrowings [Member] | Municipal tender option bond securitizations [Member]
Variable Interest Entity [Line Items]
Assets		861	998
Liabilities		(785)	(907)
Noncontrolling interests		0	0
Net assets		76	91
Carrying value [Member] | Total secured borrowings [Member] | Residential mortgage securitizations [Member]
Variable Interest Entity [Line Items]
Assets		127	138
Liabilities		(129)	(136)
Noncontrolling interests		0	0
Net assets		(2)	2
Carrying value [Member] | Consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Assets		14,157	13,414
Liabilities		(3,773)	(3,834)
Noncontrolling interests		(132)	(138)
Net assets		10,252	9,442
Carrying value [Member] | Consolidated VIEs [Member] | Commercial real estate loans [Member]
Variable Interest Entity [Line Items]
Assets		1,747	1,516
Liabilities		0	0
Noncontrolling interests		0	0
Net assets		1,747	1,516
Carrying value [Member] | Consolidated VIEs [Member] | Commercial and Industrial Loans and Leases [Member]
Variable Interest Entity [Line Items]
Assets		9,306	8,623
Liabilities		(2,812)	(2,819)
Noncontrolling interests		(12)	(14)
Net assets		6,482	5,790
Carrying value [Member] | Consolidated VIEs [Member] | Nonconforming residential mortgage loan securitizations [Member]
Variable Interest Entity [Line Items]
Assets		2,812	2,974
Liabilities		(950)	(1,003)
Noncontrolling interests		0	0
Net assets		1,862	1,971
Carrying value [Member] | Consolidated VIEs [Member] | Structured asset finance [Member]
Variable Interest Entity [Line Items]
Assets		11	13
Liabilities		(8)	(9)
Noncontrolling interests		0	0
Net assets		3	4
Carrying value [Member] | Consolidated VIEs [Member] | Investment funds [Member]
Variable Interest Entity [Line Items]
Assets		147	142
Liabilities		(2)	(2)
Noncontrolling interests		(69)	(67)
Net assets		76	73
Carrying value [Member] | Consolidated VIEs [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Assets		134	146
Liabilities		(1)	(1)
Noncontrolling interests		(51)	(57)
Net assets		82	88
Carrying value [Member] | Total secured borrowings and consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Assets		15,145	14,550
Liabilities		(4,687)	(4,877)
Noncontrolling interests		(132)	(138)
Net assets		10,326	9,535
Long-term debt [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Private placement debt financing		6,000	6,000
Loans [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Assets pledged to collateralize the borrowings of variable interest entity		414	434
Available-for-sale securities [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Assets pledged to collateralize the borrowings of variable interest entity		$ 6,200	$ 6,100
[1]	Our consolidated assets at March 31, 2017, and December 31, 2016, include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash and due from banks, $128 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $485 million and $74 million; Trading assets, $126 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $13.1 billion and $12.6 billion; Derivative assets, $1 million and $1 million; Other assets, $361 million and $452 million; and Total assets, $14.2 billion and $13.4 billion, respectively.
[2]	Our consolidated liabilities at March 31, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $30 million and $33 million; Accrued expenses and other liabilities, $103 million and $107 million; Long-term debt, $3.6 billion and $3.7 billion; and Total liabilities, $3.8 billion at both period ends, respectively.

Mortgage Banking Activities, An

Mortgage Banking Activities, Analysis of Changes in Fair Value MSRs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Changes in MSRs measured at fair value
Fair value, beginning of period	$ 12,959
Changes in fair value:
Net changes in valuation model inputs or assumptions	174	$ (957)
Changes due to collection/realization of expected cash flows over time	(461)	(491)
Total changes in fair value	(287)	(1,448)
Fair value, end of period	13,208
Carried at fair value [Member]
Changes in MSRs measured at fair value
Fair value, beginning of period	12,959	12,415
Servicing from securitizations or asset transfers (1)	583	366
Sales and other (2)	(47)	0
Net additions	536	366
Changes in fair value:
Net changes in valuation model inputs or assumptions	174	(957)
Changes due to collection/realization of expected cash flows over time	(461)	(491)
Total changes in fair value	(287)	(1,448)
Fair value, end of period	13,208	11,333
Carried at fair value [Member] | Mortgage interest rates [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	152	(1,084)
Carried at fair value [Member] | Servicing and foreclosure costs [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	27	27
Carried at fair value [Member] | Prepayment estimates and other [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	$ (5)	$ 100

Mortgage Banking Activities, 91

Mortgage Banking Activities, Analysis of Changes in Amortized MSRs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Changes in amortized MSRs
Amortization	$ (67)	$ (67)
Amortized [Member]
Changes in amortized MSRs
Balance, beginning of period	1,406	1,308
Purchases	18	21
Servicing from securitizations or asset transfers	45	97
Amortization	(67)	(67)
Balance, end of period	1,402	1,359
Fair value of amortized MSRs:
Beginning of period	1,956	1,680
End of period	2,051	1,725
Commercial mortgage servicing [Member] | Amortized [Member]
Mortgage Banking Activities (Textual) [Abstract]
Valuation allowance	$ 0	$ 0

Mortgage Banking Activities, Ma

Mortgage Banking Activities, Managed Servicing Portfolio (Details) - USD ($) $ in Billions	Mar. 31, 2017	Dec. 31, 2016
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	$ 1,678	$ 1,684
Total managed servicing portfolio	$ 2,156	$ 2,179
Ratio of MSRs to related loans serviced for others	0.87%	0.85%
Residential mortgage servicing rights [Member]
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	$ 1,204	$ 1,205
Owned loans serviced	335	347
Subserviced for others	4	8
Total managed servicing portfolio	1,543	1,560
Commercial mortgage servicing [Member]
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	474	479
Owned loans serviced	132	132
Subserviced for others	7	8
Total managed servicing portfolio	$ 613	$ 619

Mortgage Banking Activities, Mo

Mortgage Banking Activities, Mortgage Banking Noninterest Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Mortgage Banking Activities [Abstract]
Contractually specified servicing fees	$ 907	$ 954
Late charges	48	48
Ancillary fees	50	61
Unreimbursed direct servicing costs	(123)	(153)
Net servicing fees	882	910
Changes in fair value of MSRs carried at fair value:
Due to changes in valuation model inputs or assumptions	174	(957)
Changes due to collection/realization of expected cash flows over time	(461)	(491)
Total changes in fair value of MSRs carried at fair value	(287)	(1,448)
Amortization	(67)	(67)
Net derivative gains from economic hedges	(72)	1,455
Total servicing income, net	456	850
Net gains on mortgage loan origination/sales activities	772	748
Total mortgage banking noninterest income	1,228	1,598
Market-related valuation changes to MSRs, net of hedge results	$ 102	$ 498

Mortgage Banking Activities, 94

Mortgage Banking Activities, Analysis of Changes in Liability for Mortgage Loan Repurchase Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Liability For Mortgage Loan Repurchase Losses [Abstract]
Balance, beginning of period	$ 229	$ 378
Provision for repurchase losses:
Loan sales	8	7
Change in estimate	(8)	(19)
Net additions (reductions)	0	(12)
Losses	(7)	(11)
Balance, end of period	222	$ 355
Liability For Mortgage Loans Repurchase Losses [Member]
Mortgage Banking Activities (Textual) [Abstract]
Range of possible loss, portion not accrued	$ 155

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Amortized intangible assets:
Gross carrying value	$ 20,437	$ 20,357
Accumulated amortization	(16,600)	(16,242)
Net carrying value	3,837	4,115
Unamortized intangible assets:
Mortgage servicing rights	13,208	12,959
Goodwill	26,666	26,693	$ 27,003	$ 25,529
Trademark	14	14
MSRs [Member]
Amortized intangible assets:
Gross carrying value	3,658	3,595
Accumulated amortization	(2,256)	(2,189)
Net carrying value	1,402	1,406
Core deposit intangibles [Member]
Amortized intangible assets:
Gross carrying value	12,834	12,834
Accumulated amortization	(11,427)	(11,214)
Net carrying value	1,407	1,620
Customer relationship and other intangibles [Member]
Amortized intangible assets:
Gross carrying value	3,945	3,928
Accumulated amortization	(2,917)	(2,839)
Net carrying value	$ 1,028	$ 1,089

Intangible Assets, Amortization

Intangible Assets, Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2017 (actual)	$ 289	$ 293
Estimate for the remainder of 2017	1,058
Estimate for year ended December 31,
2,018	1,287
2,019	302
2,020	267
2,021	229
2,022	197
Finite lived intangible assets [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2017 (actual)	359
Amortized MSRs [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2017 (actual)	67
Estimate for the remainder of 2017	190
Estimate for year ended December 31,
2,018	218
2,019	194
2,020	178
2,021	153
2,022	134
Core deposit intangibles [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2017 (actual)	213
Estimate for the remainder of 2017	638
Estimate for year ended December 31,
2,018	769
2,019
2,020
2,021
2,022
Customer relationship and other amortized intangibles [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2017 (actual)	79
Estimate for the remainder of 2017	230
Estimate for year ended December 31,
2,018	300
2,019	108
2,020	89
2,021	76
2,022	63
Lease agreement intangibles [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2017 (actual)	$ 3

Intangible Assets, Allocation o

Intangible Assets, Allocation of Goodwill to Operating Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 26,693	$ 25,529
Reduction in goodwill related to divested business and other	(27)	(58)
Goodwill from business combinations		1,532
Goodwill, Ending Balance	26,666	27,003
Community Banking [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	16,849	16,849
Reduction in goodwill related to divested business and other	0	0
Goodwill from business combinations		0
Goodwill, Ending Balance	16,849	16,849
Wholesale Banking [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	8,585	7,475
Reduction in goodwill related to divested business and other	(27)	(58)
Goodwill from business combinations		1,532
Goodwill, Ending Balance	8,558	8,949
Wealth and Investment Management [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,259	1,205
Reduction in goodwill related to divested business and other	0	0
Goodwill from business combinations		0
Goodwill, Ending Balance	$ 1,259	$ 1,205

Guarantees, Pledged Assets an98

Guarantees, Pledged Assets and Collateral (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		$ (32)		$ 136
Maximum exposure to loss, expires in one year or less		29,518		27,689
Maximum exposure to loss, expires in one year through three years		19,562		20,190
Maximum exposure to loss, expires in three years through five years		8,640		8,732
Maximum exposure to loss, expires after five years		16,138		15,212
Maximum exposure to loss		73,858		71,823
Total assets	[1]	1,951,564		1,930,115
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value		5,100		6,600
Mortgages held for sale		9,700		15,800
Carrying value of delinquent loans eligible for repurchase		888		1,200
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Trading assets and other		93,849		84,603
Investment securities		78,163		90,946
Mortgages held for sale and loans		506,776		516,112
Total pledged assets		678,788		691,661
Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		35,662		34,167
Written put options [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		(129)		37
Maximum exposure to loss, expires in one year or less		12,708		10,427
Maximum exposure to loss, expires in one year through three years		10,690		10,805
Maximum exposure to loss, expires in three years through five years		4,354		4,573
Maximum exposure to loss, expires after five years		1,438		1,216
Maximum exposure to loss		29,190		27,021
Written put options [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		17,870		15,915
Direct pay letters of credit (DPLCs) [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		8,800		9,200
Third Party Clearing Indemnifications [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		793		1,200
Third-party Clearing Customer Obligations		75		175
Collateral Provided to Third-party Clearing Agents		718		991
Standby Letters of Credit [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		39		38
Maximum exposure to loss, expires in one year or less		15,818		16,050
Maximum exposure to loss, expires in one year through three years		8,319		8,727
Maximum exposure to loss, expires in three years through five years		3,288		3,194
Maximum exposure to loss, expires after five years		661		658
Maximum exposure to loss		28,086		28,629
Standby Letters of Credit [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		9,594		9,898
Securities lending and other indemnifications [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		0		0
Maximum exposure to loss, expires in one year or less		0		0
Maximum exposure to loss, expires in one year through three years		0		0
Maximum exposure to loss, expires in three years through five years		1		1
Maximum exposure to loss, expires after five years		793		1,166
Maximum exposure to loss		794		1,167
Securities lending and other indemnifications [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		2		2
Loans and MHFS sold with recourse [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		54		55
Maximum exposure to loss, expires in one year or less		213		84
Maximum exposure to loss, expires in one year through three years		533		637
Maximum exposure to loss, expires in three years through five years		980		947
Maximum exposure to loss, expires after five years		8,739		8,592
Maximum exposure to loss		10,465		10,260
Loans and MHFS sold with recourse [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		7,425		7,228
Factoring guarantee [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		0		0
Maximum exposure to loss, expires in one year or less		766		1,109
Maximum exposure to loss, expires in one year through three years		0		0
Maximum exposure to loss, expires in three years through five years		0		0
Maximum exposure to loss, expires after five years		0		0
Maximum exposure to loss		766		1,109
Factoring guarantee [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		766		1,109
Other guarantees [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		4		6
Maximum exposure to loss, expires in one year or less		13		19
Maximum exposure to loss, expires in one year through three years		20		21
Maximum exposure to loss, expires in three years through five years		17		17
Maximum exposure to loss, expires after five years		4,507		3,580
Maximum exposure to loss		4,557		3,637
Other guarantees [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		5		15
Loans and MHFS sold with recourse [Member]
Guarantor Obligations [Line Items]
Loans repurchased		1	$ 1
Trading assets and other [Member]
Guarantor Obligations [Line Items]
Securities owned and pledged as collateral available to be repledged, Fair Value		93,400		84,200
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Trading assets and other		31,100		33,200
Other Trading - Off-Balance Sheet [Member]
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Trading assets and other		62,700		51,400
Investment securities [Member]
Guarantor Obligations [Line Items]
Securities owned and pledged as collateral available to be repledged, Fair Value		101		617
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, carrying value		4,800		6,200
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value		4,700		6,200
Consolidated VIEs [Member]
Guarantor Obligations [Line Items]
Total assets		14,157		13,414
Secured Borrowing transactions excluded [Member]
Guarantor Obligations [Line Items]
Total assets		$ 988		$ 1,136
[1]	Our consolidated assets at March 31, 2017, and December 31, 2016, include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash and due from banks, $128 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $485 million and $74 million; Trading assets, $126 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $13.1 billion and $12.6 billion; Derivative assets, $1 million and $1 million; Other assets, $361 million and $452 million; and Total assets, $14.2 billion and $13.4 billion, respectively.

Guarantees, Offsetting of Resal

Guarantees, Offsetting of Resale and Repurchase Agreements and Securities Borrowing and Lending (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value	$ 5,100	$ 6,600
Net amounts in consolidated balance sheet	89,532	79,443
Collateral received, fair value	120,800	102,300
Collateral received with the right to sell or repledge	120,800	102,300
Collateral sold or repledged	61,500	50,000
Collateral pledged, fair value	98,600	91,400
Resale and securities borrowing agreements
Gross amounts recognized	110,061	91,123
Gross amounts offset in consolidated balance sheet	(20,529)	(11,680)
Net amounts in consolidated balance sheet	89,532	79,443
Collateral not recognized in consolidated balance sheet	(88,755)	(78,837)
Net amount	777	606
Repurchase and securities lending agreements
Gross amounts recognized	96,273	89,111
Gross amounts offset in consolidated balance sheet	(20,529)	(11,680)
Net amounts in consolidated balance sheet	75,744	77,431
Collateral pledged but not netted in consolidated balance sheet	(75,505)	(77,184)
Net amount	239	247
Fed Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net amounts in consolidated balance sheet	68,300	58,100
Resale and securities borrowing agreements
Net amounts in consolidated balance sheet	68,300	58,100
Loans [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net amounts in consolidated balance sheet	21,200	21,300
Resale and securities borrowing agreements
Net amounts in consolidated balance sheet	$ 21,200	$ 21,300

Guarantees, Pledged Assets a100

Guarantees, Pledged Assets and Collateral Guarantees, Collateral Type and Contractual Maturities of Repurchase Agreements and Securities Lending Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	$ 87,540	$ 82,104
Securities Lending	8,733	7,007
Total Repurchases and Securities Lending	96,273	89,111
Securities of U.S. Treasury and federal agencies [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	44,376	34,335
Securities Lending	130	152
Securities of U.S. states and political subdivisions [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	106	81
Federal agencies [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	28,726	32,669
Securities Lending	240	104
Non-Agency Mortgage-backed Securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	1,800	2,167
Securities Lending	0	1
Corporate debt securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	7,481	6,829
Securities Lending	556	653
Asset-backed Securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	2,370	3,010
Equity Securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	1,530	1,309
Securities Lending	7,807	6,097
Other [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	1,151	1,704
Overnight/Continuous [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	64,530	60,516
Securities Lending	7,054	5,565
Total Repurchases and Securities Lending	71,584	66,081
Up to 30 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	12,321	9,598
Securities Lending	432	167
Total Repurchases and Securities Lending	12,753	9,765
30-90 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	5,723	6,762
Securities Lending	1,247	1,275
Total Repurchases and Securities Lending	6,970	8,037
Over 90 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	4,966	5,228
Securities Lending	0	0
Total Repurchases and Securities Lending	$ 4,966	$ 5,228

Legal Actions (Details)

Legal Actions (Details)	Jul. 13, 2012USD ($)	Mar. 31, 2017USD ($)legal_action	Apr. 20, 2017USD ($)
In re Interchange Litigation [Member]
Legal Actions (Textual) [Abstract]
Amounts To Be Paid In Connection With Legal Or Regulatory Matters	$ 6,600,000,000
Litigation Settlement, Default Interchange Distributed To Class Merchants, Distribution Period	8 months
RMBS Trustee Litigation [Member]
Legal Actions (Textual) [Abstract]
Legal actions, number | legal_action		4
Sales Practice Matters [Member]
Legal Actions (Textual) [Abstract]
Legal actions, number | legal_action		11
VALoanGuaranty [Member]
Legal Actions (Textual) [Abstract]
Loss Contingency, Number of Plaintiffs | legal_action		2
Liability for Contingent Litigation Losses [Member]
Legal Actions (Textual) [Abstract]
Range of possible loss, portion not accrued		$ 2,000,000,000
Subsequent Event [Member] | Sales Practice Matters [Member]
Legal Actions (Textual) [Abstract]
Amounts To Be Paid In Connection With Legal Or Regulatory Matters			$ 142,000,000
Minimum [Member] | VALoanGuaranty [Member]
Legal Actions (Textual) [Abstract]
Loss Contingency, Damages Sought, Value		5,500
Maximum [Member] | VALoanGuaranty [Member]
Legal Actions (Textual) [Abstract]
Loss Contingency, Damages Sought, Value		$ 11,000

Derivatives, Notional or Contra

Derivatives, Notional or Contractual Amounts and Fair Values of Derivatives (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	$ 79,722	$ 85,129
Fair value derivative assets, netting	(67,158)	(70,631)
Net amounts in consolidated balance sheet, assets	12,564	14,498
Fair value derivative liabilities	81,738	87,188
Fair value derivative liabilities, netting	(69,277)	(72,696)
Net amounts in consolidated balance sheet, liabilities	12,461	14,492
Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(56,813)	(59,880)
Net amounts in consolidated balance sheet, assets	6,674	5,388
Fair value derivative liabilities, netting	(58,885)	(58,956)
Net amounts in consolidated balance sheet, liabilities	4,547	6,253
Commodity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(734)	(707)
Net amounts in consolidated balance sheet, assets	1,004	2,350
Fair value derivative liabilities, netting	(378)	(402)
Net amounts in consolidated balance sheet, liabilities	970	2,149
Equity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(3,123)	(3,018)
Net amounts in consolidated balance sheet, assets	3,133	2,340
Fair value derivative liabilities, netting	(2,939)	(2,433)
Net amounts in consolidated balance sheet, liabilities	3,871	3,679
Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(6,142)	(6,663)
Net amounts in consolidated balance sheet, assets	1,576	4,231
Fair value derivative liabilities, netting	(6,813)	(10,572)
Net amounts in consolidated balance sheet, liabilities	2,815	2,170
Credit Contracts Protection Sold [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(54)	(48)
Net amounts in consolidated balance sheet, assets	88	37
Fair value derivative liabilities, netting	(252)	(295)
Net amounts in consolidated balance sheet, liabilities	48	94
Credit Contracts Protection Purchased [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(292)	(315)
Net amounts in consolidated balance sheet, assets	89	152
Fair value derivative liabilities, netting	(10)	(38)
Net amounts in consolidated balance sheet, liabilities	174	100
Other contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative liabilities, netting	0	0
Net amounts in consolidated balance sheet, liabilities	36	47
Designated as Hedging Instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	6,450	7,260
Fair value derivative liabilities	5,432	5,489
Designated as Hedging Instrument [Member] | Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	243,374	235,222
Fair value derivative assets	5,910	6,587
Fair value derivative liabilities	2,876	2,710
Designated as Hedging Instrument [Member] | Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	27,692	25,861
Fair value derivative assets	540	673
Fair value derivative liabilities	2,556	2,779
Not Designated as Hedging Instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	73,272	77,869
Fair value derivative liabilities	76,306	81,699
Not Designated as Hedging Instrument [Member] | Economic hedges [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	1,348	2,371
Fair value derivative liabilities	788	1,689
Not Designated as Hedging Instrument [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	71,924	75,498
Fair value derivative liabilities	75,518	80,010
Not Designated as Hedging Instrument [Member] | Interest rate contract [Member] | Economic hedges [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	222,692	228,051
Fair value derivative assets	547	1,098
Fair value derivative liabilities	548	1,441
Not Designated as Hedging Instrument [Member] | Interest rate contract [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	7,231,404	6,018,370
Fair value derivative assets	57,030	57,583
Fair value derivative liabilities	60,008	61,058
Not Designated as Hedging Instrument [Member] | Commodity contract [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	63,882	65,532
Fair value derivative assets	1,738	3,057
Fair value derivative liabilities	1,348	2,551
Not Designated as Hedging Instrument [Member] | Equity contract [Member] | Economic hedges [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	9,036	7,964
Fair value derivative assets	586	545
Fair value derivative liabilities	98	83
Not Designated as Hedging Instrument [Member] | Equity contract [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	174,984	151,675
Fair value derivative assets	5,670	4,813
Fair value derivative liabilities	6,712	6,029
Not Designated as Hedging Instrument [Member] | Foreign exchange contract [Member] | Economic hedges [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	17,308	20,435
Fair value derivative assets	130	626
Fair value derivative liabilities	142	165
Not Designated as Hedging Instrument [Member] | Foreign exchange contract [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	325,923	318,999
Fair value derivative assets	7,048	9,595
Fair value derivative liabilities	6,930	9,798
Not Designated as Hedging Instrument [Member] | Credit Contracts Protection Sold [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	10,601	10,483
Fair value derivative assets	142	85
Fair value derivative liabilities	300	389
Not Designated as Hedging Instrument [Member] | Credit Contracts Protection Purchased [Member] | Economic hedges [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	161	482
Fair value derivative assets	85	102
Fair value derivative liabilities	0	0
Not Designated as Hedging Instrument [Member] | Credit Contracts Protection Purchased [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	19,652	19,964
Fair value derivative assets	296	365
Fair value derivative liabilities	184	138
Not Designated as Hedging Instrument [Member] | Other contract [Member] | Customer accommodation trading, and other derivatives [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	977	961
Fair value derivative assets	0	0
Fair value derivative liabilities	36	47
Basis swap [Member] | Designated as Hedging Instrument [Member] | Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	1,900	1,900
Basis swap [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	$ 9,800	$ 9,600

Derivatives, Gross Fair Value o

Derivatives, Gross Fair Value of Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Derivative Assets
Gross amounts recognized	$ 79,722	$ 85,129
Gross amounts offset in consolidated balance sheet	(67,158)	(70,631)
Net amounts in consolidated balance sheet, assets	12,564	14,498
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(712)	(1,745)
Net amounts	11,852	12,753
Derivative Liabilities
Gross amounts recognized	81,738	87,188
Gross amounts offset in consolidated balance sheet, liabilities	(69,277)	(72,696)
Net amounts in consolidated balance sheet, liabilities	12,461	14,492
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(3,378)	(3,794)
Net amounts	9,083	10,698
Derivatives (Textual) [Abstract]
Derivative assets subject to enforceable master netting arrangements	70,500	74,400
Derivative liabilities subject to enforceable master netting arrangements	75,500	78,400
Derivative assets not subject to enforceable master netting arrangements	9,200	10,700
Derivative liabilities not subject to enforceable master netting arrangements	6,200	8,700
Valuation adjustments for derivative assets	288	348
Valuation adjustments for derivative liabilities	99	114
Cash collateral netted against derivative assets	3,700	4,800
Cash collateral netted against derivative liabilities	6,000	7,100
Interest rate contract [Member]
Derivative Assets
Gross amounts recognized	63,487	65,268
Gross amounts offset in consolidated balance sheet	(56,813)	(59,880)
Net amounts in consolidated balance sheet, assets	6,674	5,388
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(355)	(987)
Net amounts	$ 6,319	$ 4,401
Percent exchanged in the over the counter market	31.00%	34.00%
Derivative Liabilities
Gross amounts recognized	$ 63,432	$ 65,209
Gross amounts offset in consolidated balance sheet, liabilities	(58,885)	(58,956)
Net amounts in consolidated balance sheet, liabilities	4,547	6,253
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(2,038)	(3,129)
Net amounts	$ 2,509	$ 3,124
Percent exchanged in over-the-counter market	27.00%	30.00%
Commodity contract [Member]
Derivative Assets
Gross amounts recognized	$ 1,738	$ 3,057
Gross amounts offset in consolidated balance sheet	(734)	(707)
Net amounts in consolidated balance sheet, assets	1,004	2,350
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(6)	(30)
Net amounts	$ 998	$ 2,320
Percent exchanged in the over the counter market	87.00%	74.00%
Derivative Liabilities
Gross amounts recognized	$ 1,348	$ 2,551
Gross amounts offset in consolidated balance sheet, liabilities	(378)	(402)
Net amounts in consolidated balance sheet, liabilities	970	2,149
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(33)	(37)
Net amounts	$ 937	$ 2,112
Percent exchanged in over-the-counter market	83.00%	38.00%
Equity contract [Member]
Derivative Assets
Gross amounts recognized	$ 6,256	$ 5,358
Gross amounts offset in consolidated balance sheet	(3,123)	(3,018)
Net amounts in consolidated balance sheet, assets	3,133	2,340
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(328)	(365)
Net amounts	$ 2,805	$ 1,975
Percent exchanged in the over the counter market	71.00%	75.00%
Derivative Liabilities
Gross amounts recognized	$ 6,810	$ 6,112
Gross amounts offset in consolidated balance sheet, liabilities	(2,939)	(2,433)
Net amounts in consolidated balance sheet, liabilities	3,871	3,679
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(451)	(331)
Net amounts	$ 3,420	$ 3,348
Percent exchanged in over-the-counter market	83.00%	85.00%
Foreign exchange contract [Member]
Derivative Assets
Gross amounts recognized	$ 7,718	$ 10,894
Gross amounts offset in consolidated balance sheet	(6,142)	(6,663)
Net amounts in consolidated balance sheet, assets	1,576	4,231
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(22)	(362)
Net amounts	$ 1,554	$ 3,869
Percent exchanged in the over the counter market	96.00%	97.00%
Derivative Liabilities
Gross amounts recognized	$ 9,628	$ 12,742
Gross amounts offset in consolidated balance sheet, liabilities	(6,813)	(10,572)
Net amounts in consolidated balance sheet, liabilities	2,815	2,170
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(783)	(251)
Net amounts	$ 2,032	$ 1,919
Percent exchanged in over-the-counter market	99.00%	100.00%
Credit Contracts Protection Sold [Member]
Derivative Assets
Gross amounts recognized	$ 142	$ 85
Gross amounts offset in consolidated balance sheet	(54)	(48)
Net amounts in consolidated balance sheet, assets	88	37
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	0	0
Net amounts	$ 88	$ 37
Percent exchanged in the over the counter market	19.00%	61.00%
Derivative Liabilities
Gross amounts recognized	$ 300	$ 389
Gross amounts offset in consolidated balance sheet, liabilities	(252)	(295)
Net amounts in consolidated balance sheet, liabilities	48	94
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(40)	(44)
Net amounts	$ 8	$ 50
Percent exchanged in over-the-counter market	96.00%	98.00%
Credit Contracts Protection Purchased [Member]
Derivative Assets
Gross amounts recognized	$ 381	$ 467
Gross amounts offset in consolidated balance sheet	(292)	(315)
Net amounts in consolidated balance sheet, assets	89	152
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(1)	(1)
Net amounts	$ 88	$ 151
Percent exchanged in the over the counter market	99.00%	98.00%
Derivative Liabilities
Gross amounts recognized	$ 184	$ 138
Gross amounts offset in consolidated balance sheet, liabilities	(10)	(38)
Net amounts in consolidated balance sheet, liabilities	174	100
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(33)	(2)
Net amounts	$ 141	$ 98
Percent exchanged in over-the-counter market	14.00%	50.00%
Other contract [Member]
Derivative Liabilities
Gross amounts recognized	$ 36	$ 47
Gross amounts offset in consolidated balance sheet, liabilities	0	0
Net amounts in consolidated balance sheet, liabilities	36	47
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	0	0
Net amounts	$ 36	$ 47
Percent exchanged in over-the-counter market	100.00%	100.00%

Derivatives, Derivatives in Fai

Derivatives, Derivatives in Fair Value Hedging Relationships (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract]
Net interest income (expense) recognized on derivatives (1)	$ 265	$ 315
Gains (losses) recorded in noninterest income recognized on derivatives	(324)	2,935
Gains (losses) recorded in noninterest income recognized on hedged item	132	(2,426)
Net recognized on fair value hedges (ineffective portion)	(192)	509
Derivatives (Textual) [Abstract]
Time value component recognized as net interest income (expense) on forward derivatives excluded from the assessment of hedge effectiveness	(1)	(4)
Available-for-sale securities [Member] | Interest rate contract [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract]
Net interest income (expense) recognized on derivatives (1)	(131)	(181)
Gains (losses) recorded in noninterest income recognized on derivatives	126	(1,683)
Gains (losses) recorded in noninterest income recognized on hedged item	(141)	1,691
Net recognized on fair value hedges (ineffective portion)	(15)	8
Available-for-sale securities [Member] | Foreign exchange contract [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract]
Net interest income (expense) recognized on derivatives (1)	4	0
Gains (losses) recorded in noninterest income recognized on derivatives	(42)	(66)
Gains (losses) recorded in noninterest income recognized on hedged item	44	59
Net recognized on fair value hedges (ineffective portion)	2	(7)
Mortgages held for sale [Member] | Interest rate contract [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract]
Net interest income (expense) recognized on derivatives (1)	(2)	(2)
Gains (losses) recorded in noninterest income recognized on derivatives	(1)	(37)
Gains (losses) recorded in noninterest income recognized on hedged item	0	33
Net recognized on fair value hedges (ineffective portion)	(1)	(4)
Long-term debt [Member] | Interest rate contract [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract]
Net interest income (expense) recognized on derivatives (1)	427	482
Gains (losses) recorded in noninterest income recognized on derivatives	(564)	3,103
Gains (losses) recorded in noninterest income recognized on hedged item	540	(2,807)
Net recognized on fair value hedges (ineffective portion)	(24)	296
Long-term debt [Member] | Foreign exchange contract [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives In Fair Value Hedging Relationships [Abstract]
Net interest income (expense) recognized on derivatives (1)	(33)	16
Gains (losses) recorded in noninterest income recognized on derivatives	157	1,618
Gains (losses) recorded in noninterest income recognized on hedged item	(311)	(1,402)
Net recognized on fair value hedges (ineffective portion)	$ (154)	$ 216

Derivatives, Derivatives in Cas

Derivatives, Derivatives in Cash Flow Hedging Relationships (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net Gains Losses Recognized Related to Derivatives in Cash Flow Hedging Relationships [Abstract]
Gains (losses) (pre tax) recognized in OCI on derivatives	$ (133)	$ 1,999
Gains (pre tax) reclassified from cumulative OCI into net income	202	256
Gains (losses) (pre tax) recognized in noninterest income for hedge ineffectiveness.	(3)	1
Derivatives (Textual) [Abstract]
Deferred net gains on derivatives in other comprehensive income	$ 416
Maximum length of time hedged in cash flow hedge	6 years
Change in value of derivatives excluded from assessment of cash flow hedge effectiveness	$ 0	$ 0

Derivatives, Derivatives Not De

Derivatives, Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Derivatives (Textual) [Abstract]
Gains (losses) on derivatives used to hedge residential mortgage servicing rights	$ (72)	$ 1,455
Aggregate fair value of derivatives used for economic hedges net asset (liability)	228		$ (617)
Aggregate fair value of derivative loan commitments net asset (liability)	113		$ (6)
Not Designated as Hedging Instrument [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1,202)	920
Not Designated as Hedging Instrument [Member] | Economic hedges [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(573)	647
Derivatives (Textual) [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Loss		(131)
Derivative Instruments Not Designated as Hedging Instruments, Gain	2
Not Designated as Hedging Instrument [Member] | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(629)	273
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts, Mortgage Banking [ Member] | Economic hedges [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(9)	865
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts, Mortgage Banking [ Member] | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	193	465
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts, Other | Economic hedges [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	6	(135)
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts, Other | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	45	(450)
Not Designated as Hedging Instrument [Member] | Commodity contract [Member] | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	60	53
Not Designated as Hedging Instrument [Member] | Equity contract [Member] | Economic hedges [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(481)	83
Not Designated as Hedging Instrument [Member] | Equity contract [Member] | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(1,109)	20
Not Designated as Hedging Instrument [Member] | Foreign exchange contract [Member] | Economic hedges [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(93)	(166)
Not Designated as Hedging Instrument [Member] | Foreign exchange contract [Member] | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	185	222
Not Designated as Hedging Instrument [Member] | Credit contract [Member] | Economic hedges [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	4	0
Not Designated as Hedging Instrument [Member] | Credit contract [Member] | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	(15)	(16)
Not Designated as Hedging Instrument [Member] | Other contract [Member] | Customer accommodation trading, and other derivatives [Member]
Net Gains Losses Recognized In Income Statement Related To Derivatives Not Designated As Hedging Instruments [Abstract]
Net gains (losses) recognized related to derivatives not designated as hedging instruments	$ 12	$ (21)

Derivatives, Sold and Purchased

Derivatives, Sold and Purchased Credit Derivatives (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	$ 300	$ 389
Notional amount Protection sold	10,601	10,483
Notional amount Protection purchased with identical underlyings	3,564	4,118
Notional Net protection sold	7,037	6,365
Notional Other protection purchased	16,249	16,328
Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	5,984	5,862
Corporate bonds [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	15	22
Notional amount Protection sold	3,306	4,324
Notional amount Protection purchased with identical underlyings	2,577	3,060
Notional Net protection sold	729	1,264
Notional Other protection purchased	$ 1,024	$ 1,804
Corporate bonds [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2017	Jan. 1, 2017
Corporate bonds [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2026	Dec. 31, 2026
Corporate bonds [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 1,645	$ 1,704
Structured products [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	141	193
Notional amount Protection sold	306	405
Notional amount Protection purchased with identical underlyings	245	295
Notional Net protection sold	61	110
Notional Other protection purchased	$ 209	$ 79
Structured products [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2020	Jan. 1, 2020
Structured products [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2047	Dec. 31, 2047
Structured products [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 271	$ 333
Credit default swap [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	0	0
Notional amount Protection sold	3,043	1,515
Notional amount Protection purchased with identical underlyings	241	139
Notional Net protection sold	2,802	1,376
Notional Other protection purchased	$ 4,168	$ 3,668
Credit default swap [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2017	Jan. 1, 2017
Credit default swap [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2027	Dec. 31, 2021
Credit default swap [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 665	$ 257
Commercial Mortgage Backed Securities [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	126	156
Notional amount Protection sold	499	627
Notional amount Protection purchased with identical underlyings	461	584
Notional Net protection sold	38	43
Notional Other protection purchased	$ 66	$ 71
Commercial Mortgage Backed Securities [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2047	Jan. 1, 2047
Commercial Mortgage Backed Securities [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2058	Dec. 31, 2058
Commercial Mortgage Backed Securities [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 0	$ 0
Asset-backed securities [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	17	17
Notional amount Protection sold	44	45
Notional amount Protection purchased with identical underlyings	40	40
Notional Net protection sold	4	5
Notional Other protection purchased	$ 5	$ 187
Asset-backed securities [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2045	Jan. 1, 2045
Asset-backed securities [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2046	Dec. 31, 2046
Asset-backed securities [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 0	$ 0
Other Credit Derivatives [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	1	1
Notional amount Protection sold	3,403	3,567
Notional amount Protection purchased with identical underlyings	0	0
Notional Net protection sold	3,403	3,567
Notional Other protection purchased	$ 10,777	$ 10,519
Other Credit Derivatives [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2017	Jan. 1, 2017
Other Credit Derivatives [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2028	Dec. 31, 2047
Other Credit Derivatives [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 3,403	$ 3,568

Derivatives Credit-Risk Conting

Derivatives Credit-Risk Contingent Feature Textuals (Details) - USD ($) $ in Billions	Mar. 31, 2017	Dec. 31, 2016
Derivatives [Abstract]
Aggregate fair value of derivative instruments with credit-risk-related contingent features, net liability	$ 11.3	$ 12.8
Collateral for derivative instruments with credit-risk-related contingent features	8.3	8.9
Additional collateral for derivative instruments with credit-risk-related contingent features	$ 3	$ 4

Fair Value, Measurements From B

Fair Value, Measurements From Brokers or Third Party Pricing Services (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Financial assets
Available-for-sale Securities	$ 299,530	$ 308,364
Derivatives assets	79,722	85,129
Financial liabilities
Derivatives liabilities	(81,738)	(87,188)
Brokers [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Trading assets	0	0
Available-for-sale Securities	0	0
Derivatives assets	0	0
Financial liabilities
Derivatives liabilities	0	0
Other liabilities (2)	0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets
Trading assets	0	0
Available-for-sale Securities	846	621
Derivatives assets	0	0
Financial liabilities
Derivatives liabilities	0	0
Other liabilities (2)	0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Financial assets
Available-for-sale Securities	846	621
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	69	171
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	777	450
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Trading assets	0	0
Available-for-sale Securities	861	968
Derivatives assets	0	0
Financial liabilities
Derivatives liabilities	0	0
Other liabilities (2)	0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member]
Financial assets
Available-for-sale Securities	861	968
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	861	968
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Trading assets	648	899
Available-for-sale Securities	21,672	22,870
Derivatives assets	25	22
Financial liabilities
Derivatives liabilities	(21)	(109)
Other liabilities (2)	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member]
Financial assets
Available-for-sale Securities	21,672	22,870
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale Securities	21,672	22,870
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale Securities	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Financial assets
Available-for-sale Securities	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets
Trading assets	55	60
Available-for-sale Securities	271,284	279,229
Derivatives assets	7	0
Financial liabilities
Derivatives liabilities	(2)	(1)
Other liabilities (2)	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Financial assets
Available-for-sale Securities	270,991	278,871
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale Securities	2,953	2,949
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale Securities	50,701	49,837
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	170,540	176,923
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	46,797	49,162
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Financial assets
Available-for-sale Securities	293	358
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Trading assets	0	0
Available-for-sale Securities	553	354
Derivatives assets	0	0
Financial liabilities
Derivatives liabilities	0	0
Other liabilities (2)	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member]
Financial assets
Available-for-sale Securities	553	354
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale Securities	0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale Securities	214	208
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	89	92
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	250	54
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Financial assets
Available-for-sale Securities	$ 0	$ 0

Fair Value, Assets and Liabilit

Fair Value, Assets and Liabilities Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities, Change in Unrealized Holding Gain (Loss)	$ 587	$ 572	$ 820
Assets:
Available-for-sale Securities	299,530		308,364
Mortgages held for sale	14,018		22,042
Loans	505		758
Mortgage servicing rights	13,208		12,959
Derivatives assets	79,722		85,129
Net amounts in consolidated balance sheet, assets	12,564		14,498
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,780		3,275
Investment Measured at NAV	16		48
Liabilities:
Total derivative liabilities	(81,738)		(87,188)
Fair value liability derivatives, net	(12,461)		(14,492)
Collateralized Debt Obligations [Member]
Assets:
Available-for-sale Securities	945		847
Interest rate contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	6,674		5,388
Liabilities:
Fair value liability derivatives, net	(4,547)		(6,253)
Commodity contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	1,004		2,350
Liabilities:
Fair value liability derivatives, net	(970)		(2,149)
Equity contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	3,133		2,340
Liabilities:
Fair value liability derivatives, net	(3,871)		(3,679)
Foreign exchange contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	1,576		4,231
Liabilities:
Fair value liability derivatives, net	(2,815)		(2,170)
Other contract [Member]
Liabilities:
Fair value liability derivatives, net	(36)		(47)
Fair Value, Measurements, Recurring [Member]
Assets:
Trading assets	79,171		73,032
Total trading assets	80,326		74,397
Available-for-sale Securities	299,530		308,364
Mortgages held for sale	14,018		22,042
Loans	505		758
Mortgage servicing rights	13,208		12,959
Fair value asset derivatives, netting	(67,158)		(70,631)
Net amounts in consolidated balance sheet, assets	12,564		14,498
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,780		3,275
Liabilities:
Fair value liability derivatives, netting	69,277		72,696
Fair value liability derivatives, net	(12,461)		(14,492)
Total short sale liabilities	(19,982)		(16,379)
Other liabilities (2)	(4)		(4)
Total liabilities recorded at fair value	(32,447)		(30,875)
Fair Value, Measurements, Recurring [Member] | Interest rate contract [Member]
Assets:
Derivatives assets	63,487		65,268
Liabilities:
Total derivative liabilities	(63,432)		(65,209)
Fair Value, Measurements, Recurring [Member] | Commodity contract [Member]
Assets:
Derivatives assets	1,738		3,057
Liabilities:
Total derivative liabilities	(1,348)		(2,551)
Fair Value, Measurements, Recurring [Member] | Equity contract [Member]
Assets:
Derivatives assets	6,256		5,358
Liabilities:
Total derivative liabilities	(6,810)		(6,112)
Fair Value, Measurements, Recurring [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	7,718		10,894
Liabilities:
Total derivative liabilities	(9,628)		(12,742)
Fair Value, Measurements, Recurring [Member] | Credit contract [Member]
Assets:
Derivatives assets	523		552
Liabilities:
Total derivative liabilities	(484)		(527)
Fair Value, Measurements, Recurring [Member] | Other contract [Member]
Liabilities:
Total derivative liabilities	(36)		(47)
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member]
Assets:
Available-for-sale Securities	298,405		307,153
Fair Value, Measurements, Recurring [Member] | Securities of U.S. Treasury and federal agencies [Member]
Assets:
Trading assets	15,805		17,660
Available-for-sale Securities	24,625		25,819
Liabilities:
Total short sale liabilities	(12,973)		(10,423)
Fair Value, Measurements, Recurring [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading assets	3,333		2,913
Available-for-sale Securities	52,061		51,101
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member]
Assets:
Trading assets	824		810
Available-for-sale Securities	34,009		35,020
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member]
Assets:
Trading assets	9,289		9,515
Available-for-sale Securities	10,430		11,457
Liabilities:
Total short sale liabilities	(4,712)		(4,063)
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities [Member]
Assets:
Trading assets	20,466		20,254
Available-for-sale Securities	171,199		177,548
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets:
Available-for-sale Securities	156,966		161,230
Fair Value, Measurements, Recurring [Member] | Residential [Member]
Assets:
Available-for-sale Securities	7,593		7,816
Fair Value, Measurements, Recurring [Member] | Commercial [Member]
Assets:
Available-for-sale Securities	6,640		8,502
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member]
Assets:
Trading assets	794		1,128
Available-for-sale Securities	6,080		6,207
Fair Value, Measurements, Recurring [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale Securities	11		9
Fair Value, Measurements, Recurring [Member] | Home equity loans [Member]
Assets:
Available-for-sale Securities	319		327
Fair Value, Measurements, Recurring [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale Securities	5,750		5,871
Fair Value, Measurements, Recurring [Member] | Other trading assets [Member]
Assets:
Other trading assets	1,155		1,365
Fair Value, Measurements, Recurring [Member] | Other debt securities
Assets:
Available-for-sale Securities	1		1
Fair Value, Measurements, Recurring [Member] | Other short sale liabilities [Member]
Liabilities:
Total short sale liabilities	(51)		(98)
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Assets:
Trading assets	28,660		20,752
Available-for-sale Securities	1,125		1,211
Liabilities:
Total short sale liabilities	(2,246)		(1,795)
Fair Value, Measurements, Recurring [Member] | Perpetual preferred securities [Member]
Assets:
Available-for-sale Securities	482		469
Fair Value, Measurements, Recurring [Member] | Other marketable equity securities [Member]
Assets:
Available-for-sale Securities	643		742
Fair Value, Measurements, Recurring [Member] | Excluding NAV Investments [Member]
Assets:
Total assets recorded at fair value	423,931		436,293
Fair Value, Measurements, Recurring [Member] | Including NAV Investments [Member]
Assets:
Total assets recorded at fair value	423,931		436,293
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Trading assets	40,783		35,412
Total trading assets	40,783		35,412
Available-for-sale Securities	22,564		23,781
Mortgages held for sale	0		0
Loans	0		0
Mortgage servicing rights	0		0
Fair value asset derivatives, netting	0		0
Net amounts in consolidated balance sheet, assets	1,861		1,380
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	0		0
Total assets recorded at fair value	65,208		60,573
Liabilities:
Fair value liability derivatives, netting	0		0
Fair value liability derivatives, net	(1,204)		(1,073)
Total short sale liabilities	(14,410)		(11,517)
Other liabilities (2)	0		0
Total liabilities recorded at fair value	(15,614)		(12,590)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest rate contract [Member]
Assets:
Derivatives assets	28		44
Liabilities:
Total derivative liabilities	(19)		(45)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commodity contract [Member]
Assets:
Derivatives assets	0		0
Liabilities:
Total derivative liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity contract [Member]
Assets:
Derivatives assets	1,808		1,314
Liabilities:
Total derivative liabilities	(1,164)		(919)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	25		22
Liabilities:
Total derivative liabilities	(21)		(109)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Credit contract [Member]
Assets:
Derivatives assets	0		0
Liabilities:
Total derivative liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other contract [Member]
Liabilities:
Total derivative liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member]
Assets:
Available-for-sale Securities	21,732		22,928
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Assets:
Trading assets	12,369		14,950
Available-for-sale Securities	21,672		22,870
Liabilities:
Total short sale liabilities	(12,164)		(9,722)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Collateralized Loan Obligations [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate debt securities [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	60		58
Liabilities:
Total short sale liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-Backed Securities [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Residential [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commercial [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-backed securities [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Home equity loans [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other trading assets [Member]
Assets:
Other trading assets	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other short sale liabilities [Member]
Liabilities:
Total short sale liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Assets:
Trading assets	28,414		20,462
Available-for-sale Securities	832		853
Liabilities:
Total short sale liabilities	(2,246)		(1,795)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Perpetual preferred securities [Member]
Assets:
Available-for-sale Securities	190		112
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other marketable equity securities [Member]
Assets:
Available-for-sale Securities	642		741
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Trading assets	37,950		37,274
Total trading assets	39,079		38,611
Available-for-sale Securities	273,316		281,078
Mortgages held for sale	13,061		21,057
Loans	0		0
Mortgage servicing rights	0		0
Fair value asset derivatives, netting	0		0
Net amounts in consolidated balance sheet, assets	76,094		82,126
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	40		16
Total assets recorded at fair value	401,590		422,888
Liabilities:
Fair value liability derivatives, netting	0		0
Fair value liability derivatives, net	(78,759)		(84,411)
Total short sale liabilities	(5,572)		(4,862)
Other liabilities (2)	0		0
Total liabilities recorded at fair value	(84,331)		(89,273)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest rate contract [Member]
Assets:
Derivatives assets	63,205		64,986
Liabilities:
Total derivative liabilities	(63,377)		(65,047)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodity contract [Member]
Assets:
Derivatives assets	1,701		3,020
Liabilities:
Total derivative liabilities	(1,330)		(2,537)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity contract [Member]
Assets:
Derivatives assets	3,215		2,997
Liabilities:
Total derivative liabilities	(4,114)		(3,879)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	7,679		10,843
Liabilities:
Total derivative liabilities	(9,596)		(12,616)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Credit contract [Member]
Assets:
Derivatives assets	294		280
Liabilities:
Total derivative liabilities	(342)		(332)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other contract [Member]
Liabilities:
Total derivative liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Assets:
Available-for-sale Securities	273,023		280,720
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Assets:
Trading assets	3,436		2,710
Available-for-sale Securities	2,953		2,949
Liabilities:
Total short sale liabilities	(809)		(701)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading assets	3,330		2,910
Available-for-sale Securities	50,701		49,961
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Loan Obligations [Member]
Assets:
Trading assets	426		501
Available-for-sale Securities	33,045		34,141
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate debt securities [Member]
Assets:
Trading assets	9,252		9,481
Available-for-sale Securities	9,979		10,967
Liabilities:
Total short sale liabilities	(4,712)		(4,063)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member]
Assets:
Trading assets	20,466		20,254
Available-for-sale Securities	171,109		177,456
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets:
Available-for-sale Securities	156,966		161,230
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential [Member]
Assets:
Available-for-sale Securities	7,592		7,815
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial [Member]
Assets:
Available-for-sale Securities	6,551		8,411
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed securities [Member]
Assets:
Trading assets	794		1,128
Available-for-sale Securities	5,235		5,245
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale Securities	11		9
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Home equity loans [Member]
Assets:
Available-for-sale Securities	319		327
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale Securities	4,905		4,909
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other trading assets [Member]
Assets:
Other trading assets	1,129		1,337
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities
Assets:
Available-for-sale Securities	1		1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other short sale liabilities [Member]
Liabilities:
Total short sale liabilities	(51)		(98)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Assets:
Trading assets	246		290
Available-for-sale Securities	293		358
Liabilities:
Total short sale liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Perpetual preferred securities [Member]
Assets:
Available-for-sale Securities	292		357
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other marketable equity securities [Member]
Assets:
Available-for-sale Securities	1		1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Trading assets	438		346
Total trading assets	464		374
Available-for-sale Securities	3,650		3,505
Mortgages held for sale	957		985
Loans	505		758
Mortgage servicing rights	13,208		12,959
Fair value asset derivatives, netting	0		0
Net amounts in consolidated balance sheet, assets	1,767		1,623
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,740		3,259
Total assets recorded at fair value	24,291		23,463
Liabilities:
Fair value liability derivatives, netting	0		0
Fair value liability derivatives, net	(1,775)		(1,704)
Total short sale liabilities	0		0
Other liabilities (2)	(4)		(4)
Total liabilities recorded at fair value	(1,779)		(1,708)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member]
Assets:
Derivatives assets	254		238
Liabilities:
Total derivative liabilities	(36)		(117)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commodity contract [Member]
Assets:
Derivatives assets	37		37
Liabilities:
Total derivative liabilities	(18)		(14)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member]
Assets:
Derivatives assets	1,233		1,047
Liabilities:
Total derivative liabilities	(1,532)		(1,314)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	14		29
Liabilities:
Total derivative liabilities	(11)		(17)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member]
Assets:
Derivatives assets	229		272
Liabilities:
Total derivative liabilities	(142)		(195)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other contract [Member]
Liabilities:
Total derivative liabilities	(36)		(47)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member]
Assets:
Available-for-sale Securities	3,650		3,505
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	0		0
Liabilities:
Total short sale liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading assets	3		3
Available-for-sale Securities	1,360		1,140
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized Loan Obligations [Member]
Assets:
Trading assets	398		309
Available-for-sale Securities	964		879
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate debt securities [Member]
Assets:
Trading assets	37		34
Available-for-sale Securities	391		432
Liabilities:
Total short sale liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	90		92
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Residential [Member]
Assets:
Available-for-sale Securities	1		1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial [Member]
Assets:
Available-for-sale Securities	89		91
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed securities [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	845		962
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Home equity loans [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale Securities	845		962
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other trading assets [Member]
Assets:
Other trading assets	26		28
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other short sale liabilities [Member]
Liabilities:
Total short sale liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Assets:
Trading assets	0		0
Available-for-sale Securities	0		0
Liabilities:
Total short sale liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Perpetual preferred securities [Member]
Assets:
Available-for-sale Securities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other marketable equity securities [Member]
Assets:
Available-for-sale Securities	$ 0		$ 0

Fair Value, Transfers Between F

Fair Value, Transfers Between Fair Value Levels (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	$ 0	$ 0
Trading assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	0	0
Available-for-sale securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	0	0
Mortgages held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	0	0
Net derivative assets and liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	0	0
Short sale liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	0	0
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	3
Transfer Out	0	0
Fair Value, Inputs, Level 1 [Member] | Trading assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	4
Transfer Out	0	0
Fair Value, Inputs, Level 1 [Member] | Available-for-sale securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	0
Transfer Out	0	0
Fair Value, Inputs, Level 1 [Member] | Mortgages held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	0
Transfer Out	0	0
Fair Value, Inputs, Level 1 [Member] | Net derivative assets and liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	0
Transfer Out	0	0
Fair Value, Inputs, Level 1 [Member] | Short sale liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	(1)
Transfer Out	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	77	75
Transfer Out	(28)	(137)
Fair Value, Inputs, Level 2 [Member] | Trading assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	1	11
Transfer Out	(3)	(4)
Fair Value, Inputs, Level 2 [Member] | Available-for-sale securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	72	0
Transfer Out	(5)	(80)
Fair Value, Inputs, Level 2 [Member] | Mortgages held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	1	2
Transfer Out	(42)	(29)
Fair Value, Inputs, Level 2 [Member] | Net derivative assets and liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	3	62
Transfer Out	22	(25)
Fair Value, Inputs, Level 2 [Member] | Short sale liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	0
Transfer Out	0	1
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	28	134
Transfer Out	(77)	(75)
Fair Value, Inputs, Level 3 [Member] | Trading assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	3	0
Transfer Out	(1)	(11)
Fair Value, Inputs, Level 3 [Member] | Available-for-sale securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	5	80
Transfer Out	(72)	0
Fair Value, Inputs, Level 3 [Member] | Mortgages held for sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	42	29
Transfer Out	(1)	(2)
Fair Value, Inputs, Level 3 [Member] | Net derivative assets and liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	(22)	25
Transfer Out	(3)	(62)
Fair Value, Inputs, Level 3 [Member] | Short sale liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	0
Transfer Out	$ 0	$ 0

Fair Value, Assets and Liabi112

Fair Value, Assets and Liabilities Measured on Recurring Basis Level 3 Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Trading securities and trading assets [Member]
Assets:
Balance, beginning of period	$ 374	$ 441
Net gains (losses) included in net income	2	(32)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	86	(57)
Transfers into Level 3	3	0
Transfers out of Level 3	(1)	(11)
Balance, end of period	464	341
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(1)	(27)
Trading assets [Member]
Assets:
Balance, beginning of period	346	407
Net gains (losses) included in net income	4	(30)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	86	(57)
Transfers into Level 3	3	0
Transfers out of Level 3	(1)	(11)
Balance, end of period	438	309
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	(27)
Trading assets [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Balance, beginning of period	3	8
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	3	8
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Trading assets [Member] | Mortgage-Backed Securities [Member]
Assets:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Trading assets [Member] | Collateralized Loan Obligations [Member]
Assets:
Balance, beginning of period	309	343
Net gains (losses) included in net income	4	(25)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	85	(39)
Transfers into Level 3	0	0
Transfers out of Level 3	0	(11)
Balance, end of period	398	268
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	(23)
Trading assets [Member] | Corporate debt securities [Member]
Assets:
Balance, beginning of period	34	56
Net gains (losses) included in net income	0	(5)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	1	(18)
Transfers into Level 3	3	0
Transfers out of Level 3	(1)	0
Balance, end of period	37	33
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	(4)
Trading assets [Member] | Asset-backed securities [Member]
Assets:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Trading assets [Member] | Equity Securities [Member]
Assets:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Other trading assets [Member]
Assets:
Balance, beginning of period	28	34
Net gains (losses) included in net income	(2)	(2)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	26	32
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(1)	0
Mortgages held for sale [Member]
Assets:
Balance, beginning of period	985	1,082
Net gains (losses) included in net income	(9)	24
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(60)	(62)
Transfers into Level 3	42	29
Transfers out of Level 3	(1)	(2)
Balance, end of period	957	1,071
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(11)	21
Loans [Member]
Assets:
Balance, beginning of period	758	5,316
Net gains (losses) included in net income	(6)	(1)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(247)	(94)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	505	5,221
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(5)	(2)
Mortgage servicing rights [Member]
Assets:
Balance, beginning of period	12,959	12,415
Net gains (losses) included in net income	(287)	(1,448)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	536	366
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	13,208	11,333
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	174	(957)
Derivative [Member]
Assets and Liabilities:
Balance, beginning of period	(81)	128
Net gains (losses) included in net income	176	587
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(78)	(526)
Transfers into Level 3	(22)	25
Transfers out of Level 3	(3)	(62)
Balance, end of period	(8)	152
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	27	104
Derivative [Member] | Interest rate contract [Member]
Assets and Liabilities:
Balance, beginning of period	121	288
Net gains (losses) included in net income	209	599
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(112)	(379)
Transfers into Level 3	0	0
Transfers out of Level 3	0	(7)
Balance, end of period	218	501
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	85	270
Derivative [Member] | Commodity contract [Member]
Assets and Liabilities:
Balance, beginning of period	23	12
Net gains (losses) included in net income	2	2
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(6)	(3)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	19	11
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	7	3
Derivative [Member] | Equity contract [Member]
Assets and Liabilities:
Balance, beginning of period	(267)	(111)
Net gains (losses) included in net income	(44)	(2)
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	37	(140)
Transfers into Level 3	(22)	25
Transfers out of Level 3	(3)	(55)
Balance, end of period	(299)	(283)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(57)	(147)
Derivative [Member] | Foreign exchange contract [Member]
Assets and Liabilities:
Balance, beginning of period	12	0
Net gains (losses) included in net income	(9)	0
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	3	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(5)	0
Derivative [Member] | Credit contract [Member]
Assets and Liabilities:
Balance, beginning of period	77	(3)
Net gains (losses) included in net income	7	9
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	3	(6)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	87	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(14)	(1)
Derivative [Member] | Other contract [Member]
Assets and Liabilities:
Balance, beginning of period	(47)	(58)
Net gains (losses) included in net income	11	(21)
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	2
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	(36)	(77)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	11	(21)
Other assets [Member]
Assets:
Balance, beginning of period	3,259	3,065
Net gains (losses) included in net income	481	(57)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	89
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	3,740	3,097
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	485	(58)
Short sale liabilities [Member]
Liabilities:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Other liabilities [Member]
Liabilities:
Balance, beginning of period	(4)	(30)
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	25
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	(4)	(5)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member]
Assets:
Balance, beginning of period	3,505	3,726
Net gains (losses) included in net income	(12)	18
Net gains (losses) included in other comprehensive income	57	(2)
Purchases, sales, issuances and settlements, net	167	215
Transfers into Level 3	5	80
Transfers out of Level 3	(72)	0
Balance, end of period	3,650	4,037
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(4)	0
Available-for-sale securities [Member] | Debt Securities [Member]
Assets:
Balance, beginning of period	3,505	3,726
Net gains (losses) included in net income	(12)	18
Net gains (losses) included in other comprehensive income	57	(2)
Purchases, sales, issuances and settlements, net	167	215
Transfers into Level 3	5	80
Transfers out of Level 3	(72)	0
Balance, end of period	3,650	4,037
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(4)	0
Available-for-sale securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Balance, beginning of period	1,140	1,500
Net gains (losses) included in net income	0	1
Net gains (losses) included in other comprehensive income	2	3
Purchases, sales, issuances and settlements, net	285	(127)
Transfers into Level 3	5	80
Transfers out of Level 3	(72)	0
Balance, end of period	1,360	1,457
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Mortgage-Backed Securities [Member]
Assets:
Balance, beginning of period	92	74
Net gains (losses) included in net income	(3)	0
Net gains (losses) included in other comprehensive income	4	0
Purchases, sales, issuances and settlements, net	(3)	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	90	74
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(4)	0
Available-for-sale securities [Member] | Residential [Member]
Assets:
Balance, beginning of period	1	1
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	1	1
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Commercial [Member]
Assets:
Balance, beginning of period	91	73
Net gains (losses) included in net income	(3)	0
Net gains (losses) included in other comprehensive income	4	0
Purchases, sales, issuances and settlements, net	(3)	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	89	73
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(4)	0
Available-for-sale securities [Member] | Collateralized Loan Obligations [Member]
Assets:
Balance, beginning of period	879	565
Net gains (losses) included in net income	5	15
Net gains (losses) included in other comprehensive income	41	(24)
Purchases, sales, issuances and settlements, net	39	257
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	964	813
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Corporate debt securities [Member]
Assets:
Balance, beginning of period	432	405
Net gains (losses) included in net income	(14)	2
Net gains (losses) included in other comprehensive income	8	19
Purchases, sales, issuances and settlements, net	(35)	27
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	391	453
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Asset-backed securities [Member]
Assets:
Balance, beginning of period	962	1,182
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	2	0
Purchases, sales, issuances and settlements, net	(119)	58
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	845	1,240
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Auto loans and leases [Member]
Assets:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Other asset-backed securities [Member]
Assets:
Balance, beginning of period	962	1,182
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	2	0
Purchases, sales, issuances and settlements, net	(119)	58
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	845	1,240
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Equity Securities [Member]
Assets:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Perpetual preferred securities [Member]
Assets:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Other marketable equity securities [Member]
Assets:
Balance, beginning of period	0	0
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	$ 0	$ 0

Fair Value, Assets and Liabi113

Fair Value, Assets and Liabilities Measured on Recurring Basis Level 3 Reconciliation Breakout (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Trading securities and trading assets [Member]
Assets:
Purchases	$ 206	$ 59
Sales	(82)	(116)
Issuances	0	0
Settlements	(38)	0
Net	86	(57)
Trading assets [Member]
Assets:
Purchases	206	59
Sales	(82)	(116)
Issuances	0	0
Settlements	(38)	0
Net	86	(57)
Trading assets [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Purchases	1	0
Sales	(1)	0
Issuances	0	0
Settlements	0	0
Net	0	0
Trading assets [Member] | Mortgage-Backed Securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Trading assets [Member] | Collateralized Loan Obligations [Member]
Assets:
Purchases	199	56
Sales	(76)	(95)
Issuances	0	0
Settlements	(38)	0
Net	85	(39)
Trading assets [Member] | Corporate debt securities [Member]
Assets:
Purchases	6	3
Sales	(5)	(21)
Issuances	0	0
Settlements	0	0
Net	1	(18)
Trading assets [Member] | Asset-backed securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Trading assets [Member] | Equity Securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Other trading assets [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Available-for-sale securities [Member]
Assets:
Purchases	76	357
Sales	0	0
Issuances	367	176
Settlements	(276)	(318)
Net	167	215
Available-for-sale securities [Member] | Debt Securities [Member]
Assets:
Purchases	76	357
Sales	0	0
Issuances	367	176
Settlements	(276)	(318)
Net	167	215
Available-for-sale securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Purchases	0	28
Sales	0	0
Issuances	346	16
Settlements	(61)	(171)
Net	285	(127)
Available-for-sale securities [Member] | Mortgage-Backed Securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(3)	0
Net	(3)	0
Available-for-sale securities [Member] | Residential [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Available-for-sale securities [Member] | Commercial [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(3)	0
Net	(3)	0
Available-for-sale securities [Member] | Collateralized Loan Obligations [Member]
Assets:
Purchases	72	301
Sales	0	0
Issuances	0	0
Settlements	(33)	(44)
Net	39	257
Available-for-sale securities [Member] | Corporate debt securities [Member]
Assets:
Purchases	4	28
Sales	0	0
Issuances	0	0
Settlements	(39)	(1)
Net	(35)	27
Available-for-sale securities [Member] | Asset-backed securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	21	160
Settlements	(140)	(102)
Net	(119)	58
Available-for-sale securities [Member] | Auto loans and leases [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Available-for-sale securities [Member] | Other asset-backed securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	21	160
Settlements	(140)	(102)
Net	(119)	58
Available-for-sale securities [Member] | Equity Securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Available-for-sale securities [Member] | Perpetual preferred securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Available-for-sale securities [Member] | Equity Securities, Other 1 [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Mortgages held for sale [Member]
Assets:
Purchases	22	22
Sales	(156)	(159)
Issuances	106	118
Settlements	(32)	(43)
Net	(60)	(62)
Loans [Member]
Assets:
Purchases	1	4
Sales	(129)	0
Issuances	6	88
Settlements	(125)	(186)
Net	(247)	(94)
Mortgage servicing rights [Member]
Assets:
Purchases	0	0
Sales	(47)	0
Issuances	583	366
Settlements	0	0
Net	536	366
Derivative [Member]
Assets and Liabilities:
Purchases	2	16
Sales	(1)	(147)
Issuances	0	0
Settlements	(79)	(395)
Net	(78)	(526)
Derivative [Member] | Interest rate contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(112)	(379)
Net	(112)	(379)
Derivative [Member] | Commodity contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(6)	(3)
Net	(6)	(3)
Derivative [Member] | Equity contract [Member]
Assets and Liabilities:
Purchases	0	13
Sales	0	(147)
Issuances	0	0
Settlements	37	(6)
Net	37	(140)
Derivative [Member] | Foreign exchange contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Derivative [Member] | Credit contract [Member]
Assets and Liabilities:
Purchases	2	3
Sales	(1)	0
Issuances	0	0
Settlements	2	(9)
Net	3	(6)
Derivative [Member] | Other contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	2
Net	0	2
Other assets [Member]
Assets:
Purchases	0	89
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	89
Short sale liabilities [Member]
Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Other liabilities [Member]
Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	25
Net	$ 0	$ 25

Fair Value, Assets and Liabi114

Fair Value, Assets and Liabilities Measured on a Recurring Basis Level 3 Valuation Techniques and Significant Unobservable Inputs (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)$ / loan	Dec. 31, 2016USD ($)$ / loan
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 299,530	$ 308,364
Mortgages held for sale, carried at fair value	14,018	22,042
Loans	505	758
Mortgage servicing rights	13,208	12,959
Fair Value Inputs [Abstract]
Fair value derivative assets	79,722	85,129
Aggregate Fair Value Of Derivative Loan Commitments Net Asset (Liability)	113	(6)
Fair value derivative liabilities	$ 81,738	$ 87,188
Derivative Loan Commitments [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Fall-out factor	1.00%	1.00%
Initial-value servicing (in bps)	(0.238%)	(0.23%)
Derivative Loan Commitments [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Fall-out factor	99.00%	99.00%
Initial-value servicing (in bps)	1.31%	1.312%
Derivative Loan Commitments [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Fall-out factor	21.00%	15.00%
Initial-value servicing (in bps)	0.61%	0.568%
Interest rate contract [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Prepayment rate	2.80%	2.80%
Loss severity	50.00%	50.00%
Default rate	0.00%	0.10%
Interest rate contract [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Prepayment rate	12.50%	12.50%
Loss severity	50.00%	50.00%
Default rate	6.80%	6.80%
Interest rate contract [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Prepayment rate	9.60%	9.60%
Loss severity	50.00%	50.00%
Default rate	1.70%	2.10%
Equity contract [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Weighted average life	9 months	1 year
Conversion factor	(10.30%)	(10.60%)
Equity contract [Member] | Minimum [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Volatility factor	5.00%	6.50%
Correlation factor	(77.00%)	(65.00%)
Equity contract [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Weighted average life	2 years 9 months	3 years
Conversion factor	0.00%	0.00%
Equity contract [Member] | Maximum [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Volatility factor	100.00%	100.00%
Correlation factor	98.50%	98.50%
Equity contract [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Weighted average life	1 year 8 months	2 years
Conversion factor	(7.90%)	(7.90%)
Equity contract [Member] | Weighted Average [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Volatility factor	19.70%	20.70%
Correlation factor	37.60%	39.90%
Credit contract [Member] | Minimum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(23.80%)	(27.70%)
Credit contract [Member] | Minimum [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Loss severity	12.00%	12.00%
Credit spread	0.00%	0.00%
Credit contract [Member] | Maximum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	29.10%	21.30%
Credit contract [Member] | Maximum [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Loss severity	60.00%	60.00%
Credit spread	9.40%	11.60%
Credit contract [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	1.00%	0.02%
Credit contract [Member] | Weighted Average [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Loss severity	48.40%	50.40%
Credit spread	1.10%	1.20%
Government, healthcare and other revenue bonds [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	1.20%	1.10%
Government, healthcare and other revenue bonds [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	5.00%	5.60%
Government, healthcare and other revenue bonds [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	2.00%	2.00%
Auction rate and other municipal bonds [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.10%	3.70%
Weighted average life		3 years 7 months
Auction rate and other municipal bonds [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.60%	4.90%
Weighted average life		3 years 7 months
Auction rate and other municipal bonds [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.30%	4.50%
Weighted average life		3 years 7 months
Collateralized Loan Obligations [Member] | Minimum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(19.80%)	(15.50%)
Collateralized Loan Obligations [Member] | Maximum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	20.30%	20.30%
Collateralized Loan Obligations [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	1.60%	2.90%
Diversified payment rights [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	1.70%	1.90%
Diversified payment rights [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.30%	4.80%
Diversified payment rights [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	3.10%	3.30%
Other commercial and consumer [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	3.30%	3.00%
Weighted average life	7 months	9 months
Other commercial and consumer [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.70%	4.60%
Weighted average life	4 years	4 years 2 months
Other commercial and consumer [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.20%	3.90%
Weighted average life	2 years 9 months	2 years 11 months
Mortgages held for sale [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	2.10%	1.10%
Prepayment rate	6.20%	6.30%
Loss severity	0.10%	0.10%
Default rate	0.50%	0.50%
Mortgages held for sale [Member] | Minimum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(53.30%)	(53.30%)
Mortgages held for sale [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	7.00%	6.90%
Prepayment rate	17.20%	17.10%
Loss severity	45.90%	42.50%
Default rate	8.10%	7.90%
Mortgages held for sale [Member] | Maximum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	0.00%	0.00%
Mortgages held for sale [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	5.30%	5.10%
Prepayment rate	10.00%	10.00%
Loss severity	28.10%	26.90%
Default rate	1.80%	1.90%
Mortgages held for sale [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(36.30%)	(37.80%)
Loans [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	0.00%	0.00%
Prepayment rate	9.40%	0.40%
Utilization rate		0.00%
Loans [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	7.20%	3.90%
Prepayment rate	100.00%	100.00%
Utilization rate		0.80%
Loans [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	0.20%	0.60%
Prepayment rate	95.00%	83.70%
Utilization rate		0.10%
Residential mortgage servicing rights [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	6.60%	6.50%
Prepayment rate	9.20%	9.40%
Cost to service per loan | $ / loan	79	79
Residential mortgage servicing rights [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	18.80%	18.40%
Prepayment rate	21.20%	20.60%
Cost to service per loan | $ / loan	562	598
Residential mortgage servicing rights [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	6.90%	6.80%
Prepayment rate	10.20%	10.30%
Cost to service per loan | $ / loan	150	155
Other assets: nonmarketable equity investments [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	5.00%	5.00%
Volatility factor	0.40%	0.30%
Other assets: nonmarketable equity investments [Member] | Minimum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(21.00%)	(22.10%)
Other assets: nonmarketable equity investments [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	10.30%	10.30%
Volatility factor	2.80%	2.40%
Other assets: nonmarketable equity investments [Member] | Maximum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(4.80%)	(5.50%)
Other assets: nonmarketable equity investments [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	9.00%	8.70%
Volatility factor	1.40%	1.10%
Other assets: nonmarketable equity investments [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(15.60%)	(16.40%)
Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	$ (32,447)	$ (30,875)
Available-for-sale Securities	299,530	308,364
Mortgages held for sale, carried at fair value	14,018	22,042
Loans	505	758
Mortgage servicing rights	13,208	12,959
Recurring [Member] | Interest rate contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	63,487	65,268
Fair value derivative liabilities	63,432	65,209
Recurring [Member] | Equity contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	6,256	5,358
Fair value derivative liabilities	6,810	6,112
Recurring [Member] | Credit contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	523	552
Fair value derivative liabilities	484	527
Recurring [Member] | Securities of U.S. states and political subdivisions [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	52,061	51,101
Recurring [Member] | Collateralized Loan Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	34,009	35,020
Recurring [Member] | Asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	6,080	6,207
Recurring [Member] | Auto loans and leases [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	11	9
Recurring [Member] | Other asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	5,750	5,871
Recurring [Member] | Equity Securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	1,125	1,211
Recurring [Member] | Perpetual preferred securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	482	469
Fair Value, Inputs, Level 3 [Member] | Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(1,779)	(1,708)
Available-for-sale Securities	3,650	3,505
Mortgages held for sale, carried at fair value	957	985
Loans	505	758
Mortgage servicing rights	13,208	12,959
Total insignificant level 3 assets, net of liabilities	526	570
Total level 3 assets, net of liabilities	22,512	21,755
Fair Value Inputs [Abstract]
Assets, Fair Value Disclosure	24,291	23,463
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Derivative Loan Commitments [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	113	(6)
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Interest rate contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	254	238
Fair value derivative liabilities	36	117
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Interest rate contract [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	105	127
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Equity contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	1,233	1,047
Fair value derivative liabilities	1,532	1,314
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Equity contract [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	94	79
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Equity contract [Member] | Option model [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	(393)	(346)
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Credit contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	229	272
Fair value derivative liabilities	142	195
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Credit contract [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	0	(28)
Fair Value Inputs [Abstract]
Fair value derivative assets	15
Fair value derivative liabilities	(15)
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Credit contract [Member] | Option model [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	87	105
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Securities of U.S. states and political subdivisions [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	1,360	1,140
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Government, healthcare and other revenue bonds [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	1,120	906
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Auction rate and other municipal bonds [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	29	29
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Auction rate and other municipal bonds [Member] | Vendor priced [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	214	208
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Collateralized Loan Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	964	879
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Collateralized Loan Obligations [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	398	309
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Collateralized Loan Obligations [Member] | Vendor priced [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	964	879
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	845	962
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Auto loans and leases [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	0	0
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Other asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	845	962
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Diversified payment rights [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	401	443
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Other commercial and consumer [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	417	492
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Other commercial and consumer [Member] | Vendor priced [Member]
Fair Value Inputs [Abstract]
Trading and Available for Sale Securities, Fair Value Disclosure	27	27
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Equity Securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	0	0
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Perpetual preferred securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	0	0
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale, carried at fair value	928	955
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Mortgages held for sale [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale, carried at fair value	29	30
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Loans [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Loans	505	758
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Residential mortgage servicing rights [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage servicing rights	13,208	12,959
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Other assets: nonmarketable equity investments [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Other assets: nonmarketable equity investments	17	21
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Other assets: nonmarketable equity investments [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Other assets: nonmarketable equity investments	3,723	3,238
Fair Value, Inputs, Level 2 [Member] | Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(84,331)	(89,273)
Available-for-sale Securities	273,316	281,078
Mortgages held for sale, carried at fair value	13,061	21,057
Loans	0	0
Mortgage servicing rights	0	0
Fair Value Inputs [Abstract]
Assets, Fair Value Disclosure	401,590	422,888
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Interest rate contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	63,205	64,986
Fair value derivative liabilities	63,377	65,047
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Equity contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	3,215	2,997
Fair value derivative liabilities	4,114	3,879
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Credit contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	294	280
Fair value derivative liabilities	342	332
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Securities of U.S. states and political subdivisions [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	50,701	49,961
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Collateralized Loan Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	33,045	34,141
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	5,235	5,245
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Auto loans and leases [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	11	9
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Other asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	4,905	4,909
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Equity Securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	293	358
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Perpetual preferred securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 292	$ 357
Non modified loans [Member] | Minimum [Member]
Fair Value Inputs [Abstract]
Cost to service per loan | $ / loan	79	79
Non modified loans [Member] | Maximum [Member]
Fair Value Inputs [Abstract]
Cost to service per loan | $ / loan	280	293
Collateralized Debt Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 945	$ 847

Fair Value, Assets Recorded at

Fair Value, Assets Recorded at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	$ 14,018	$ 22,042
Loans	505	758
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,780	3,275
Investment Measured at NAV	16	48
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	2,942	3,662
Loans held for sale	24	8
Loans	682	1,293
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	317	645
Investment Measured at NAV	0	13
Nonrecurring [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	452	464
Nonrecurring [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	230	829
Level 1 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	0	0
Loans held for sale	0	0
Loans	0	0
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	0	0
Assets, Fair Value Disclosure	0	0
Level 1 [Member] | Nonrecurring [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Level 1 [Member] | Nonrecurring [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Level 2 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	1,624	2,312
Loans held for sale	24	8
Loans	677	1,286
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	170	233
Assets, Fair Value Disclosure	2,495	3,839
Level 2 [Member] | Nonrecurring [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	452	464
Level 2 [Member] | Nonrecurring [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	225	822
Level 3 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	1,318	1,350
Loans held for sale	0	0
Loans	5	7
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	147	412
Assets, Fair Value Disclosure	1,470	1,769
Level 3 [Member] | Nonrecurring [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Level 3 [Member] | Nonrecurring [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	5	7
Excluding NAV Investments [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	3,965	5,608
Including NAV Investments [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 3,965	$ 5,621

Fair Value, Changes in Fair Val

Fair Value, Changes in Fair Value of Assets Recorded at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Mortgages held for sale (LOCOM)	$ 21	$ 31
Loans	(302)	(370)
Other assets	(100)	(99)
Total	(381)	(438)
Total Commercial [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Loans	(127)	(110)
Total Consumer [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Loans	$ (175)	$ (260)

Fair Value, Assets Recorded 117

Fair Value, Assets Recorded at Fair Value on a Nonrecurring Basis Level 3 Valuation Techniques and Significant Unobservable Inputs (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 299,530	$ 308,364
Mortgages held for sale	$ 14,018	$ 22,042
Minimum [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Default rate	0.50%	0.50%
Discount rate	2.10%	1.10%
Loss severity	0.10%	0.10%
Prepayment rate	6.20%	6.30%
Minimum [Member] | Mortgages held for sale [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(53.30%)	(53.30%)
Maximum [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Default rate	8.10%	7.90%
Discount rate	7.00%	6.90%
Loss severity	45.90%	42.50%
Prepayment rate	17.20%	17.10%
Maximum [Member] | Mortgages held for sale [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	0.00%	0.00%
Weighted Average [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Default rate	1.80%	1.90%
Discount rate	5.30%	5.10%
Loss severity	28.10%	26.90%
Prepayment rate	10.00%	10.00%
Weighted Average [Member] | Mortgages held for sale [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(36.30%)	(37.80%)
Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 299,530	$ 308,364
Mortgages held for sale	14,018	22,042
Fair Value Inputs [Abstract]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(32,447)	(30,875)
Nonrecurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	$ 2,942	$ 3,662
Nonrecurring [Member] | Minimum [Member] | Discounted cash flow [Member] | Other Assets: Nonmarketable Equity Investments [Member]
Fair Value Inputs [Abstract]
Discount rate	15.00%	4.70%
Nonrecurring [Member] | Minimum [Member] | Residential [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Default rate	0.10%	0.20%
Discount rate	1.50%	1.50%
Loss severity	0.70%	0.70%
Prepayment rate	3.50%	3.00%
Nonrecurring [Member] | Maximum [Member] | Discounted cash flow [Member] | Other Assets: Nonmarketable Equity Investments [Member]
Fair Value Inputs [Abstract]
Discount rate	15.00%	9.30%
Nonrecurring [Member] | Maximum [Member] | Residential [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Default rate	8.60%	4.30%
Discount rate	8.50%	8.50%
Loss severity	47.80%	50.10%
Prepayment rate	100.00%	100.00%
Nonrecurring [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Other Assets: Nonmarketable Equity Investments [Member]
Fair Value Inputs [Abstract]
Discount rate	15.00%	7.30%
Nonrecurring [Member] | Weighted Average [Member] | Residential [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Default rate	2.80%	1.90%
Discount rate	3.80%	3.80%
Loss severity	2.40%	2.40%
Prepayment rate	49.90%	50.70%
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 3,650	$ 3,505
Mortgages held for sale	957	985
Total assets recorded at fair value	24,291	23,463
Fair Value Inputs [Abstract]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(1,779)	(1,708)
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	928	955
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgages held for sale [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	29	30
Fair Value, Inputs, Level 3 [Member] | Nonrecurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	1,318	1,350
Insignificant level 3 assets	149	199
Total assets recorded at fair value	1,470	1,769
Fair Value, Inputs, Level 3 [Member] | Nonrecurring [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Other Assets Nonmarketable Equity Investments, Fair Value Disclosure	3	220
Fair Value, Inputs, Level 3 [Member] | Nonrecurring [Member] | Residential [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	1,318	1,350
Government Insured Or Guaranteed [Member] | Residential [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	1,300	1,300
Non Government Insured Or Guaranteed [Member] | Residential [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	32	33
Collateralized Debt Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 945	$ 847

Fair Value, Investments in Enti

Fair Value, Investments in Entities That Calculate Net Asset Value Per Share (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 16	$ 48
Unfunded commitments	$ 27	$ 37
Private equity funds [Member]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Alternative investment, distributions from underlying assets, distribution period	2,023

Fair Value, Option, Carrying Am

Fair Value, Option, Carrying Amount (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgages held for sale	$ 14,018	$ 22,042
Loans	505	758
Other assets, carried at fair value	3,780	3,275
Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Trading assets, loans	1,120	1,332
Trading assets, loans, unpaid principal	1,168	1,418
Trading assets, loans, aggregate difference	(48)	(86)
Nonaccrual loans	46	100
Nonaccrual loans, unpaid principal	49	115
Nonaccrual loans, Aggregate difference	(3)	(15)
Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgages held for sale	14,018	22,042
Mortgages held for sale, unpaid principal	13,695	21,961
Loans, Loans held for sale and Mortgages held for sale, aggregate difference	323	81
Nonaccrual loans	130	136
Nonaccrual loans, unpaid principal	172	182
Nonaccrual loans, Aggregate difference	(42)	(46)
Loans 90 days or more past due and still accruing	11	12
Loans 90 days or more past due and still accruing, Unpaid principal	15	16
Loans 90 days or more past due and still accruing, Aggregate difference	(4)	(4)
Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale	0	0
Loans held for sale, unpaid principal	6	6
Loans, Loans held for sale and Mortgages held for sale, aggregate difference	(6)	(6)
Nonaccrual loans	0	0
Nonaccrual loans, unpaid principal	6	6
Nonaccrual loans, Aggregate difference	(6)	(6)
Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans	505	758
Loans, Unpaid principal	529	775
Loans, Loans held for sale and Mortgages held for sale, aggregate difference	(24)	(17)
Nonaccrual loans	302	297
Nonaccrual loans, unpaid principal	325	318
Nonaccrual loans, Aggregate difference	(23)	(21)
Other assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Other assets, carried at fair value	$ 3,780	$ 3,275

Fair Value, Option, Gains and L

Fair Value, Option, Gains and Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Mortgage banking noninterest income [Member] | Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	$ 0	$ 0
Mortgage banking noninterest income [Member] | Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	279	565
Mortgage banking noninterest income [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Mortgage banking noninterest income [Member] | Other assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Mortgage banking noninterest income [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	25	10
Net gains (losses) from trading activities [Member] | Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Other assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	(2)	(2)
Other noninterest income [Member] | Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Other noninterest income [Member] | Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Other noninterest income [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	(1)
Other noninterest income [Member] | Other assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	490	(58)
Other noninterest income [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	$ 0	$ 0

Fair Value, Option, Instrument

Fair Value, Option, Instrument Specific Credit Risk (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	$ 24	$ 6
Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	25	10
Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	$ (1)	$ (4)

Fair Value, Estimates for Finan

Fair Value, Estimates for Financial Instruments Excluding those Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Financial assets
Cash and due from banks		$ 19,698	$ 20,729	$ 19,084	$ 19,111
Federal funds sold, securities purchased under resale agreements and other short-term investments		308,747	266,038
Held-to-maturity securities		108,030	99,583
Loans	[1]	958,405	967,604
Excluding investments at NAV		8,122	8,397
Investment Measured at NAV		16	48
Financial liabilities
Deposits		1,325,444	1,306,079
Short-term borrowings		94,871	96,781
Long-Term Debt		256,468	255,077
Capital Lease Obligations		7	8
Carrying value [Member]
Financial assets
Cash and due from banks		19,698	20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		308,747	266,038
Held-to-maturity securities		108,030	99,583
Mortgages held for sale		3,804	4,267
Loans held for sale		253	80
Loans		927,812	936,358
Excluding investments at NAV		8,108	8,362
Investment Measured at NAV		14	35
Financial liabilities
Deposits		1,325,444	1,306,079
Short-term borrowings		94,871	96,781
Long-Term Debt		256,461	255,070
Financial Liabilities Fair Value Disclosure		1,676,776	1,657,930
Estimated fair value [Member]
Financial assets
Cash and due from banks		19,698	20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		308,747	266,038
Held-to-maturity securities		107,629	99,155
Mortgages held for sale		3,814	4,277
Loans held for sale		255	81
Loans		937,166	947,834
Excluding investments at NAV		8,655	8,942
Investment Measured at NAV		16	48
Financial liabilities
Deposits		1,325,608	1,306,153
Short-term borrowings		94,871	96,781
Long-Term Debt		258,419	255,779
Financial Liabilities Fair Value Disclosure		1,678,898	1,658,713
Loan Commitments And Standby, Commercial And Similar Letters of Credit		1,200	1,200
Estimated fair value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks		19,698	20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		26,189	18,670
Held-to-maturity securities		45,154	45,079
Mortgages held for sale		0	0
Loans held for sale		0	0
Loans		0	0
Excluding investments at NAV		0	0
Assets		91,041	84,478
Financial liabilities
Deposits		0	0
Short-term borrowings		0	0
Long-Term Debt		0	0
Financial Liabilities Fair Value Disclosure		0	0
Estimated fair value [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets
Cash and due from banks		0	0
Federal funds sold, securities purchased under resale agreements and other short-term investments		282,480	247,286
Held-to-maturity securities		60,138	51,706
Mortgages held for sale		2,496	2,927
Loans held for sale		255	81
Loans		58,461	60,245
Excluding investments at NAV		18	18
Assets		403,848	362,263
Financial liabilities
Deposits		1,302,614	1,282,158
Short-term borrowings		94,871	96,781
Long-Term Debt		248,256	245,704
Financial Liabilities Fair Value Disclosure		1,645,741	1,624,643
Estimated fair value [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Cash and due from banks		0	0
Federal funds sold, securities purchased under resale agreements and other short-term investments		78	82
Held-to-maturity securities		2,337	2,370
Mortgages held for sale		1,318	1,350
Loans held for sale		0	0
Loans		878,705	887,589
Excluding investments at NAV		8,637	8,924
Assets		891,075	900,315
Financial liabilities
Deposits		22,994	23,995
Short-term borrowings		0	0
Long-Term Debt		10,163	10,075
Financial Liabilities Fair Value Disclosure		33,157	34,070
Finance Leases Financing Receivable [Member]
Financial assets
Loans		19,200	19,300
Excluding NAV Investments [Member] | Carrying value [Member]
Financial assets
Assets		1,376,452	1,335,417
Excluding NAV Investments [Member] | Estimated fair value [Member]
Financial assets
Assets		1,385,964	1,347,056
Including NAV Investments [Member] | Carrying value [Member]
Financial assets
Assets		1,376,466	1,335,452
Including NAV Investments [Member] | Estimated fair value [Member]
Financial assets
Assets		$ 1,385,980	$ 1,347,104
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

Preferred Stock (Details)

Preferred Stock (Details) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)vote$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares
Detail of Preferred Stock [Abstract]
Preferred Stock, Shares authorized and designated | shares	12,841,891	11,941,891
ESOP, Liquidation preference per share | $ / shares	$ 0	$ 0
ESOP, Shares authorized and designated | shares	2,389,181	1,439,181
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	12,482,712	11,532,712
Voting Rights	If issued, preference shares would be limited to one vote per share
Preferred Stock, Liquidation Preference, Value	$ 26,900	$ 25,950
Carrying value	25,501	24,551
Discount	$ 1,399	$ 1,399
ESOP Shares issued and outstanding | shares	2,389,181	1,439,181
ESOP Liquidation preference value	$ 2,389	$ 1,439
ESOP Carrying value	2,389	1,439
ESOP Discount	$ 0	$ 0
Preferred Stock, No Voting Rights [Member]
Class of Stock [Line Items]
Preferred shares authorized | shares	20,000,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred Stock, Par or Stated Value	$ 0
Preferred Stock, Voting Rights [Member]
Class of Stock [Line Items]
Preferred shares authorized | shares	4,000,000
Number of votes per share | vote	1
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	0
Preferred Stock, Par or Stated Value	$ 0
Dividend Equalization Preferred Shares (DEP) [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 10	$ 10
Preferred Stock, Shares authorized and designated | shares	97,000	97,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	96,546	96,546
Preferred Stock, Liquidation Preference, Value	$ 0	$ 0
Carrying value	0	0
Discount	$ 0	$ 0
Series H - Floating Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 0	$ 20,000
Preferred Stock, Shares authorized and designated | shares	0	50,000
Series I - Floating Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 100,000	$ 100,000
Preferred Stock, Shares authorized and designated | shares	25,010	25,010
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	25,010	25,010
Preferred Stock, Liquidation Preference, Value	$ 2,501	$ 2,501
Carrying value	2,501	2,501
Discount	$ 0	$ 0
Series J - 8.00% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	8.00%	8.00%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 1,000	$ 1,000
Preferred Stock, Shares authorized and designated | shares	2,300,000	2,300,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	2,150,375	2,150,375
Preferred Stock, Liquidation Preference, Value	$ 2,150	$ 2,150
Carrying value	1,995	1,995
Discount	$ 155	$ 155
Series K - 7.98% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	7.98%	7.98%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 1,000	$ 1,000
Preferred Stock, Shares authorized and designated | shares	3,500,000	3,500,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	3,352,000	3,352,000
Preferred Stock, Liquidation Preference, Value	$ 3,352	$ 3,352
Carrying value	2,876	2,876
Discount	$ 476	$ 476
Series L - 7.50% Non-Cumulative Perpetual Convertible Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	7.50%	7.50%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 1,000	$ 1,000
Preferred Stock, Shares authorized and designated | shares	4,025,000	4,025,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	3,968,000	3,968,000
Preferred Stock, Liquidation Preference, Value	$ 3,968	$ 3,968
Carrying value	3,200	3,200
Discount	$ 768	$ 768
Series N - 5.20% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.20%	5.20%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	30,000	30,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	30,000	30,000
Preferred Stock, Liquidation Preference, Value	$ 750	$ 750
Carrying value	750	750
Discount	$ 0	$ 0
Series O - 5.125% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.125%	5.125%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	27,600	27,600
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	26,000	26,000
Preferred Stock, Liquidation Preference, Value	$ 650	$ 650
Carrying value	650	650
Discount	$ 0	$ 0
Series P - 5.25% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.25%	5.25%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	26,400	26,400
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	25,000	25,000
Preferred Stock, Liquidation Preference, Value	$ 625	$ 625
Carrying value	625	625
Discount	$ 0	$ 0
Series Q - 5.85% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.85%	5.85%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	69,000	69,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	69,000	69,000
Preferred Stock, Liquidation Preference, Value	$ 1,725	$ 1,725
Carrying value	1,725	1,725
Discount	$ 0	$ 0
Series R - 6.625% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	6.625%	6.625%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	34,500	34,500
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	33,600	33,600
Preferred Stock, Liquidation Preference, Value	$ 840	$ 840
Carrying value	840	840
Discount	$ 0	$ 0
Series S - 5.900% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.90%	5.90%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	80,000	80,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	80,000	80,000
Preferred Stock, Liquidation Preference, Value	$ 2,000	$ 2,000
Carrying value	2,000	2,000
Discount	$ 0	$ 0
Series T - 6.000% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	6.00%	6.00%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	32,200	32,200
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	32,000	32,000
Preferred Stock, Liquidation Preference, Value	$ 800	$ 800
Carrying value	800	800
Discount	$ 0	$ 0
Series U - 5.875% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.875%	5.875%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	80,000	80,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	80,000	80,000
Preferred Stock, Liquidation Preference, Value	$ 2,000	$ 2,000
Carrying value	2,000	2,000
Discount	$ 0	$ 0
Series V - 6.000% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	6.00%	6.00%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	40,000	40,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	40,000	40,000
Preferred Stock, Liquidation Preference, Value	$ 1,000	$ 1,000
Carrying value	1,000	1,000
Discount	$ 0	$ 0
Series W - 5.700% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.70%	5.70%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	40,000	40,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	40,000	40,000
Preferred Stock, Liquidation Preference, Value	$ 1,000	$ 1,000
Carrying value	1,000	1,000
Discount	$ 0	$ 0
Series X - 5.500% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.50%	5.50%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares	$ 25,000	$ 25,000
Preferred Stock, Shares authorized and designated | shares	46,000	46,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	46,000	46,000
Preferred Stock, Liquidation Preference, Value	$ 1,150	$ 1,150
Carrying value	1,150	1,150
Discount	$ 0	$ 0

ESOP Preferred Stock (Details)

ESOP Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Additional paid-in capital included related to preferred stock	$ 157	$ 126
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	2,389,181	1,439,181
Carrying value	$ 2,389	$ 1,439
Unearned ESOP shares	$ (2,546)	$ (1,565)
Employee Stock Ownership Plan Preferred Stock 2017 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	950,000	0
Carrying value	$ 950	$ 0
Employee Stock Ownership Plan Preferred Stock 2017 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	7.00%
Employee Stock Ownership Plan Preferred Stock 2017 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	8.00%
Employee Stock Ownership Plan Preferred Stock 2016 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	358,528	358,528
Carrying value	$ 358	$ 358
Employee Stock Ownership Plan Preferred Stock 2016 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	9.30%	9.30%
Employee Stock Ownership Plan Preferred Stock 2016 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	10.30%	10.30%
Employee Stock Ownership Plan Preferred Stock 2015 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	200,820	200,820
Carrying value	$ 201	$ 201
Employee Stock Ownership Plan Preferred Stock 2015 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	8.90%	8.90%
Employee Stock Ownership Plan Preferred Stock 2015 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	9.90%	9.90%
Employee Stock Ownership Plan Preferred Stock 2014 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	255,413	255,413
Carrying value	$ 255	$ 255
Employee Stock Ownership Plan Preferred Stock 2014 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	8.70%	8.70%
Employee Stock Ownership Plan Preferred Stock 2014 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	9.70%	9.70%
Employee Stock Ownership Plan Preferred Stock 2013 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	222,558	222,558
Carrying value	$ 223	$ 223
Employee Stock Ownership Plan Preferred Stock 2013 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	8.50%	8.50%
Employee Stock Ownership Plan Preferred Stock 2013 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	9.50%	9.50%
Employee Stock Ownership Plan Preferred Stock 2012 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	144,072	144,072
Carrying value	$ 144	$ 144
Employee Stock Ownership Plan Preferred Stock 2012 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	10.00%	10.00%
Employee Stock Ownership Plan Preferred Stock 2012 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	11.00%	11.00%
Employee Stock Ownership Plan Preferred Stock 2011 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	149,301	149,301
Carrying value	$ 149	$ 149
Employee Stock Ownership Plan Preferred Stock 2011 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	9.00%	9.00%
Employee Stock Ownership Plan Preferred Stock 2011 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	10.00%	10.00%
Employee Stock Ownership Plan Preferred Stock 2010 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	90,775	90,775
Carrying value	$ 91	$ 91
Employee Stock Ownership Plan Preferred Stock 2010 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	9.50%	9.50%
Employee Stock Ownership Plan Preferred Stock 2010 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	10.50%	10.50%
Employee Stock Ownership Plan Preferred Stock 2008 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	17,714	17,714
Carrying value	$ 18	$ 18
Employee Stock Ownership Plan Preferred Stock 2008 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	10.50%	10.50%
Employee Stock Ownership Plan Preferred Stock 2008 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	11.50%	11.50%
Stock Compensation Plan [Member] | Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, redemption price per share	$ 1,000

Employee Benefits, Components o

Employee Benefits, Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		93 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017
Cash Balance Plan [Member]
Components of net periodic benefit cost [Abstract]
Net periodic benefit cost (income)			$ 0
Pension benefits qualified [Member]
Components of net periodic benefit cost [Abstract]
Service cost	$ 1	$ 1
Interest cost	103	109
Expected return on plan assets	(163)	(142)
Amortization of net actuarial loss (gain)	38	33
Amortization of prior service credit	0	0
Settlement loss	1	0
Net periodic benefit cost (income)	(20)	1
Pension benefits nonqualified [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	0
Interest cost	6	7
Expected return on plan assets	0	0
Amortization of net actuarial loss (gain)	2	3
Amortization of prior service credit	0	0
Settlement loss	2	2
Net periodic benefit cost (income)	10	12
Other benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	0
Interest cost	7	10
Expected return on plan assets	(7)	(8)
Amortization of net actuarial loss (gain)	(2)	(1)
Amortization of prior service credit	(3)	0
Settlement loss	0	0
Net periodic benefit cost (income)	$ (5)	$ 1

Earnings Per Common Share, Calc

Earnings Per Common Share, Calculation of Earnings and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Common Share [Abstract]
Wells Fargo net income	$ 5,457	$ 5,462
Less: Preferred stock dividends and other	401	377
Wells Fargo net income applicable to common stock (numerator)	$ 5,056	$ 5,085
Earnings per common share
Average common shares outstanding (denominator)	5,008.6	5,075.7
Per share	$ 1.01	$ 1
Diluted earnings per common share
Average common shares outstanding (in shares)	5,008.6	5,075.7
Diluted average common shares outstanding (denominator)	5,070.4	5,139.4
Per share	$ 1	$ 0.99
Stock Option [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	21.2	21.2
Restricted Share Rights [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	28	31.7
Warrants [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	12.6	10.8

Earnings Per Common Share, Anti

Earnings Per Common Share, Antidilutive Securities Excluded from the Calculation of Diluted Earnings per Common Share (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Instruments	2.2	4.4

Other Comprehensive Income, Com

Other Comprehensive Income, Components of Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Investment securities:
Net unrealized gains arising during the period, Before tax	$ 369	$ 795
Net unrealized gains arising during the period, Tax effect	(133)	(310)
Net unrealized gains (losses) arising during the period, Net of tax	236	485
Reclassification of net (gains) losses to net income, Before tax	(145)	(304)
Reclassification of net (gains) losses to net income, Tax effect	54	113
Reclassification of net (gains) losses to net income, Net of tax	(91)	(191)
Net change, Before tax	224	491
Net change, Tax effect	(79)	(197)
Net change, Net of tax	145	294
Derivatives and hedging activities:
Net unrealized gains (losses) arising during the period	(133)	1,999
Net unrealized gains (losses) arising during the period, Tax effect	50	(753)
Net unrealized gains (losses) arising during the period, Net of tax	(83)	1,246
Reclassification of net (gains) losses to net income, Before tax	(202)	(256)
Reclassification of net (gains) losses to net income, Tax effect	76	96
Reclassification of net (gains) losses to net income, Net of tax	(126)	(160)
Net change, Before tax	(335)	1,743
Net change, Tax effect	126	(657)
Net change, Net of tax	(209)	1,086
Defined benefit plans adjustments:
Net actuarial and prior service losses arising during the period, Before tax	(7)	(8)
Net actuarial and prior service losses arising during the period, Tax effect	3	3
Net actuarial and prior service losses arising during the period, Net of tax	(4)	(5)
Amortization of net actuarial loss, Before tax	38	35
Amortization of net actuarial loss, Tax effect	(14)	(13)
Amortization of net actuarial loss, Net of tax	24	22
Settlements and other, Before tax	0	2
Settlements and other, Tax effect	0	(1)
Settlements and other, Net of tax	0	1
Reclassification of amounts to net periodic benefit costs, Before tax	38	37
Reclassification of amounts to net periodic benefit costs, Tax effect	(14)	(14)
Reclassification of amounts to net periodic benefit costs, Net of tax	24	23
Net change, Before tax	31	29
Net change, Tax effect	(11)	(11)
Net change, Net of tax	20	18
Foreign currency translation adjustments:
Net unrealized gains arising during the period, Before tax	16	43
Net unrealized gains arising during the period, Tax effect	1	8
Net unrealized gains arising during the period, Net of tax	17	51
Net change, Before tax	16	43
Net change, Tax effect	1	8
Net change, Net of tax	17	51
Other comprehensive income (loss), before tax	(64)	2,306
Other comprehensive income (loss), tax effect	37	(857)
Other comprehensive income (loss), net of tax	(27)	1,449
Less: Other comprehensive income (loss) from noncontrolling interests	14	(28)
Wells Fargo other comprehensive income (loss), net of tax	(41)	1,477
Interest income [Member] | Loans [Member]
Derivatives and hedging activities:
Reclassification of net (gains) losses to net income, Before tax	(205)	(260)
Reclassification of net (gains) losses to net income, Tax effect	77	98
Reclassification of net (gains) losses to net income, Net of tax	(128)	(162)
Interest income [Member] | Investment securities [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	7	0
Reclassification of net (gains) losses to net income, Tax effect	(3)	0
Reclassification of net (gains) losses to net income, Net of tax	4	0
Net (gains) losses from debt and equity investments [Member] | Debt Securities [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	(36)	(244)
Reclassification of net (gains) losses to net income, Tax effect	13	91
Reclassification of net (gains) losses to net income, Net of tax	(23)	(153)
Net (gains) losses from debt and equity investments [Member] | Equity Securities [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	(116)	(59)
Reclassification of net (gains) losses to net income, Tax effect	44	22
Reclassification of net (gains) losses to net income, Net of tax	(72)	(37)
Other noninterest income [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	0	(1)
Reclassification of net (gains) losses to net income, Tax effect	0	0
Reclassification of net (gains) losses to net income, Net of tax	0	(1)
Interest expense on long-term debt [Member]
Derivatives and hedging activities:
Reclassification of net (gains) losses to net income, Before tax	3	4
Reclassification of net (gains) losses to net income, Tax effect	(1)	(2)
Reclassification of net (gains) losses to net income, Net of tax	$ 2	$ 2

Other Comprehensive Income, Cum

Other Comprehensive Income, Cumulative OCI Balances (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Investment securities:
Cumulative other comprehensive income (loss), Investment securities, beginning of period	$ (1,099)	$ 1,813
Net unrealized gains arising during the period	236	485
Amounts reclassified from accumulated other comprehensive income	(91)	(191)
Net change, Net of tax	145	294
Less: Other comprehensive income (loss) from noncontrolling interests	13	(30)
Cumulative other comprehensive income (loss), Investment securities, end of period	(967)	2,137
Derivatives and hedging activities:
Cumulative other comprehensive income, Derivatives and hedging activities, beginning of period	89	620
Net unrealized gains (losses) arising during the period	(83)	1,246
Amounts reclassified from accumulated other comprehensive income	(126)	(160)
Net change, Net of tax	(209)	1,086
Less: Other comprehensive income from noncontrolling interests	0	0
Cumulative other comprehensive income (loss), Derivatives and hedging activities, end of period	(120)	1,706
Defined benefit plans adjustments:
Cumulative other comprehensive loss, Defined benefit plans adjustment, beginning of period	(1,943)	(1,951)
Net unrealized losses arising during the period	(4)	(5)
Amounts reclassified from accumulated other comprehensive income	24	23
Net change, Net of tax	20	18
Less: Other comprehensive income from noncontrolling interests	0	0
Cumulative other comprehensive loss, Defined benefit plans adjustment, end of period	(1,923)	(1,933)
Foreign currency translation adjustments:
Cumulative other comprehensive loss, Foreign currency translation adjustments, beginning of period	(184)	(185)
Net unrealized gains arising during the period	17	51
Amounts reclassified from accumulated other comprehensive income	0	0
Net change, Net of tax	17	51
Less: Other comprehensive income from noncontrolling interests	1	2
Cumulative other comprehensive loss, Foreign currency translation adjustments, end of period	(168)	(136)
Cumulative other comprehensive income (loss), beginning of period	(3,137)	297
Net unrealized gains arising during the period	166	1,777
Amounts reclassified from accumulated other comprehensive income	(193)	(328)
Other comprehensive income (loss), net of tax	(27)	1,449
Less: Other comprehensive income (loss) from noncontrolling interests, net of tax	14	(28)
Cumulative other comprehensive income (loss), end of period	$ (3,178)	$ 1,774

Operating Segments (Details)

Operating Segments (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)segment	Mar. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments | segment	3
Financial Information of Operating Segment [Abstract]
Net interest income	$ 12,300	$ 11,667
Provision (reversal of provision) for credit losses	605	1,086
Noninterest income	9,702	10,528
Noninterest expense	13,792	13,028
Income before income tax expense	7,605	8,081
Income tax expense (benefit)	2,057	2,567
Net income before noncontrolling interests	5,548	5,514
Less: Net income from noncontrolling interests	91	52
Wells Fargo net income	5,457	5,462
Average loans	963,600	927,200
Average assets	1,931,000	1,819,900
Average Deposits	1,299,200	1,219,400
Other [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	(549)	(492)
Provision (reversal of provision) for credit losses	6	17
Noninterest income	(773)	(739)
Noninterest expense	(860)	(818)
Income before income tax expense	(468)	(430)
Income tax expense (benefit)	(178)	(163)
Net income before noncontrolling interests	(290)	(267)
Less: Net income from noncontrolling interests	0	0
Wells Fargo net income	(290)	(267)
Average loans	(56,100)	(51,000)
Average assets	(89,400)	(84,200)
Average Deposits	(79,600)	(76,100)
Community Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	7,627	7,468
Provision (reversal of provision) for credit losses	646	720
Noninterest income	4,466	5,146
Noninterest expense	7,221	6,836
Income before income tax expense	4,226	5,058
Income tax expense (benefit)	1,127	1,697
Net income before noncontrolling interests	3,099	3,361
Less: Net income from noncontrolling interests	90	65
Wells Fargo net income	3,009	3,296
Average loans	482,700	484,300
Average assets	990,700	947,400
Average Deposits	717,200	683,000
Wholesale Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	4,148	3,748
Provision (reversal of provision) for credit losses	(43)	363
Noninterest income	2,890	3,210
Noninterest expense	4,225	3,968
Income before income tax expense	2,856	2,627
Income tax expense (benefit)	746	719
Net income before noncontrolling interests	2,110	1,908
Less: Net income from noncontrolling interests	(5)	(13)
Wells Fargo net income	2,115	1,921
Average loans	466,300	429,800
Average assets	807,800	748,600
Average Deposits	466,000	428,000
Wealth and Investment Management [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	1,074	943
Provision (reversal of provision) for credit losses	(4)	(14)
Noninterest income	3,119	2,911
Noninterest expense	3,206	3,042
Income before income tax expense	991	826
Income tax expense (benefit)	362	314
Net income before noncontrolling interests	629	512
Less: Net income from noncontrolling interests	6	0
Wells Fargo net income	623	512
Average loans	70,700	64,100
Average assets	221,900	208,100
Average Deposits	$ 195,600	$ 184,500

Regulatory and Agency Capita131

Regulatory and Agency Capital Requirements (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Wells Fargo & Company [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 149,860	$ 148,785
Tier 1	172,543	171,364
Total	205,269	204,425
Assets:
Risk-weighted	1,250,630	1,274,589
Adjusted average	$ 1,901,719	$ 1,914,802
Regulatory capital ratios:
Common equity tier 1 capital	11.98%	11.67%
Tier 1 capital	13.80%	13.44%
Total capital	16.41%	16.04%
Tier 1 leverage	9.07%	8.95%
Wells Fargo & Company [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 149,860	$ 148,785
Tier 1	172,543	171,364
Total	215,158	214,877
Assets:
Risk-weighted	1,300,723	1,336,198
Adjusted average	$ 1,901,719	$ 1,914,802
Regulatory capital ratios:
Common equity tier 1 capital	11.52%	11.13%
Tier 1 capital	13.27%	12.82%
Total capital	16.54%	16.08%
Tier 1 leverage	9.07%	8.95%
Wells Fargo Bank, NA [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 133,362	$ 132,225
Tier 1	133,362	132,225
Total	147,007	145,665
Assets:
Risk-weighted	1,123,251	1,143,681
Adjusted average	$ 1,705,841	$ 1,714,524
Regulatory capital ratios:
Common equity tier 1 capital	11.87%	11.56%
Tier 1 capital	11.87%	11.56%
Total capital	13.09%	12.74%
Tier 1 leverage	7.82%	7.71%
Wells Fargo Bank, NA [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 133,362	$ 132,225
Tier 1	133,362	132,225
Total	156,150	155,281
Assets:
Risk-weighted	1,190,078	1,222,876
Adjusted average	$ 1,705,841	$ 1,714,524
Regulatory capital ratios:
Common equity tier 1 capital	11.21%	10.81%
Tier 1 capital	11.21%	10.81%
Total capital	13.12%	12.70%
Tier 1 leverage	7.82%	7.71%

Regulatory and Agency Capita132

Regulatory and Agency Capital Requirements Minimum Required Regulatory Capital Ratios – Transition Requirements (Details)	Mar. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital Conservation Buffer	1.25%
GSIB Surcharge	1.00%
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Risk Based Common Equity Required for Capital Adequacy to Risk Weighted Assets	6.75%	5.625%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.25%	7.125%
Capital Required for Capital Adequacy to Risk Weighted Assets	10.25%	9.125%
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Wells Fargo Bank, NA [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Risk Based Common Equity Required for Capital Adequacy to Risk Weighted Assets	5.75%	5.125%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	7.25%	6.625%
Capital Required for Capital Adequacy to Risk Weighted Assets	9.25%	8.625%
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%