Wells Fargo & Company (WFC) 10-Q 4 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 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	Jun. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
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		4,963,944,641

Consolidated Statement of Incom

Consolidated Statement of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income
Trading assets		$ 710	$ 572	$ 1,353	$ 1,168
Investment securities		2,698	2,176	5,373	4,438
Mortgages held for sale		195	181	379	342
Loans held for sale		4	3	5	5
Loans		10,358	9,822	20,499	19,399
Other interest income		750	392	1,332	766
Total interest income		14,715	13,146	28,941	26,118
Interest expense
Deposits		683	332	1,220	639
Short-term borrowings		163	77	277	144
Long-term debt		1,278	921	2,461	1,763
Other interest expense		108	83	200	172
Total interest expense		2,232	1,413	4,158	2,718
Net interest income		12,483	11,733	24,783	23,400
Provision for credit losses		555	1,074	1,160	2,160
Net interest income after provision for credit losses		11,928	10,659	23,623	21,240
Noninterest income
Service charges on deposit accounts		1,276	1,336	2,589	2,645
Trust and investment fees		3,629	3,547	7,199	6,932
Card fees		1,019	997	1,964	1,938
Other fees		902	906	1,767	1,839
Mortgage banking		1,148	1,414	2,376	3,012
Insurance		280	286	557	713
Net gains from trading activities		237	328	676	528
Net gains on debt securities	[1]	120	447	156	691
Net gains from equity investments	[2]	188	189	591	433
Lease income		493	497	974	870
Other		394	482	539	1,356
Total noninterest income		9,686	10,429	19,388	20,957
Noninterest expense
Salaries		4,343	4,099	8,604	8,135
Commission and incentive compensation		2,499	2,604	5,224	5,249
Employee benefits		1,308	1,244	2,994	2,770
Equipment		529	493	1,106	1,021
Net occupancy		706	716	1,418	1,427
Core deposit and other intangibles		287	299	576	592
FDIC and other deposit assessments		328	255	661	505
Other		3,541	3,156	6,750	6,195
Total noninterest expense		13,541	12,866	27,333	25,894
Income before income tax expense		8,073	8,222	15,678	16,303
Income tax expense		2,225	2,649	4,282	5,216
Net income before noncontrolling interests		5,848	5,573	11,396	11,087
Less: Net income from noncontrolling interests		38	15	129	67
Wells Fargo net income		5,810	5,558	11,267	11,020
Less: Preferred stock dividends and other		406	385	807	762
Wells Fargo net income applicable to common stock		$ 5,404	$ 5,173	$ 10,460	$ 10,258
Per share information
Earnings per common share (in dollars per share)		$ 1.08	$ 1.02	$ 2.09	$ 2.02
Diluted earnings per common share (in dollars per share)		1.07	1.01	2.07	2
Dividends declared per common share (in dollars per share)		$ 0.380	$ 0.380	$ 0.760	$ 0.755
Average common shares outstanding (in shares)		4,989.9	5,066.9	4,999.2	5,071.3
Diluted average common shares outstanding (in shares)		5,037.7	5,118.1	5,054.8	5,129.8
[1]	(1)Total other-than-temporary impairment (OTTI) losses were $6 million and $11 million for second quarter 2017 and 2016, respectively. Of total OTTI, losses of $48 million and $26 million were recognized in earnings, and losses (reversal of losses) of $(42) million and $(15) million were recognized as non-credit-related OTTI in other comprehensive income for second quarter 2017 and 2016, respectively. Total OTTI losses were $49 million and $87 million for the first half of 2017 and 2016, respectively. Of total OTTI, losses of $100 million and $91 million were recognized in earnings, and reversal of losses of $(51) million and $(4) million were recognized as non-credit-related OTTI in other comprehensive income for the first half of 2017 and 2016, respectively.
[2]	(2)Includes OTTI losses of $25 million and $104 million for second quarter 2017 and 2016, respectively, and $102 million and $237 million for the first half of 2017 and 2016, respectively.

Consolidated Statement of Inco3

Consolidated Statement of Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Noninterest income
Total recorded as part of gross realized losses	$ 51	$ 26	$ 104	$ 95
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Equity Securities and Nonmarketable Equity Securities	25	104	102	237
Total debt securities [Member]
Noninterest income
Total OTTI losses (reversal of losses) recorded on debt securities	6	11	49	87
Total recorded as part of gross realized losses	48	26	100	91
Total reversal of losses recognized in OCI as non-credit-related impairment	$ (42)	$ (15)	$ (51)	$ (4)

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Wells Fargo net income	$ 5,810	$ 5,558	$ 11,267	$ 11,020
Investment securities:
Net unrealized gains arising during the period	1,565	1,571	1,934	2,366
Reclassification of net gains to net income	(177)	(504)	(322)	(808)
Derivatives and hedging activities:
Net unrealized gains arising during the period	376	1,057	243	3,056
Reclassification of net gains on cash flow hedges to net income	(153)	(265)	(355)	(521)
Defined benefit plans adjustments:
Net actuarial and prior service losses arising during the period	0	(19)	(7)	(27)
Amortization of net actuarial loss, settlements and other to net income	41	39	79	76
Foreign currency translation adjustments:
Net unrealized gains (losses) arising during the period	31	(6)	47	37
Other comprehensive income , before tax	1,683	1,873	1,619	4,179
Income tax expense related to other comprehensive income	(624)	(714)	(587)	(1,571)
Other comprehensive income, net of tax	1,059	1,159	1,032	2,608
Less: Other comprehensive income (loss) from noncontrolling interests	(9)	(15)	5	(43)
Wells Fargo other comprehensive income, net of tax	1,068	1,174	1,027	2,651
Wells Fargo comprehensive income	6,878	6,732	12,294	13,671
Comprehensive income from noncontrolling interests	29	0	134	24
Total comprehensive income	$ 6,907	$ 6,732	$ 12,428	$ 13,695

Consolidated Balance Sheet (Una

Consolidated Balance Sheet (Unaudited) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 20,248	$ 20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		264,706	266,038
Trading assets		83,607	74,397
Investment securities:
Available-for-sale Securities		269,202	308,364
Held-to-maturity, at cost (fair value $140,390 and $99,155)		140,392	99,583
Mortgages held for sale (includes $19,543 and $22,042 carried at fair value)	[1]	24,807	26,309
Loans held for sale		156	80
Loans (includes $443 and $758 carried at fair value)	[1]	957,423	967,604
Allowance for loan losses		(11,073)	(11,419)
Net loans		946,350	956,185
Mortgage servicing rights:
Measured at fair value		12,789	12,959
Amortized		1,399	1,406
Premises and equipment, net		8,403	8,333
Goodwill		26,573	26,693
Derivative assets		13,273	14,498
Other assets (includes $3,986 and $3,275 carried at fair value)	[1]	118,966	114,541
Total assets	[2]	1,930,871	1,930,115
Liabilities
Noninterest-bearing deposits		372,766	375,967
Interest-bearing deposits		933,064	930,112
Total deposits		1,305,830	1,306,079
Short-term borrowings		95,356	96,781
Derivative liabilities		11,636	14,492
Accrued expenses and other liabilities		73,035	57,189
Long-term debt		238,869	255,077
Total liabilities	[3]	1,724,726	1,729,618
Wells Fargo stockholders' equity:
Preferred stock		25,785	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		60,689	60,234
Retained earnings		139,524	133,075
Cumulative other comprehensive income (loss)		(2,110)	(3,137)
Treasury stock – 515,041,424 shares and 465,702,148 shares		(25,675)	(22,713)
Unearned ESOP shares		(2,119)	(1,565)
Total Wells Fargo stockholders' equity		205,230	199,581
Noncontrolling interests		915	916
Total equity		206,145	200,497
Total liabilities and equity		$ 1,930,871	$ 1,930,115
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.
[2]	Our consolidated assets at June 30, 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, $112 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $424 million and $74 million; Trading assets, $50 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $12.1 billion and $12.6 billion; Derivative assets, $0 million and $1 million; Other assets, $339 million and $452 million; and Total assets, $13.0 billion and $13.4 billion, respectively.
[3]	Our consolidated liabilities at June 30, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $28 million and $33 million; Accrued expenses and other liabilities, $96 million and $107 million; Long-term debt, $2.8 billion and $3.7 billion; and Total liabilities, $3.0 billion and $3.8 billion, respectively.

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 20,248	$ 20,729
Federal Funds Sold Securities Purchased Under Resale Agreements And Other Short Term Investments		264,706	266,038
Trading Assets		83,607	74,397
Investment securities		409,592	407,519
Held-to-maturity, at fair value		140,390	99,155
Mortgages held for sale, carried at fair value		19,543	22,042
Loans Receivable, Fair Value Disclosure		443	758
Net loans		946,350	956,185
Derivative assets		13,273	14,498
Other assets	[1]	118,966	114,541
Other assets, carried at fair value		3,986	3,275
Liabilities
Accrued expenses and other liabilities		73,035	57,189
Long-term debt		238,869	255,077
Total liabilities	[2]	1,724,726	1,729,618
Wells Fargo stockholders' equity:
Total assets	[3]	$ 1,930,871	$ 1,930,115
Common stock, par value		$ 1.6666	$ 1.6666
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		515,041,424	465,702,148
Derivative liabilities		$ 11,636	$ 14,492
VIEs that we consolidate [Member]
Assets
Cash and due from banks		112	168
Federal Funds Sold Securities Purchased Under Resale Agreements And Other Short Term Investments		424	74
Trading Assets		50	130
Investment securities		0	0
Net loans		12,100	12,600
Derivative assets		0	1
Other assets		339	452
Liabilities
Accrued expenses and other liabilities		96	107
Long-term debt		2,835	3,694
Total liabilities		2,959	3,834
Wells Fargo stockholders' equity:
Total assets		13,021	13,414
Derivative liabilities		28	33
Vies That We Consolidate No Recourse [Member]
Liabilities
Accrued expenses and other liabilities		96	107
Long-term debt		2,800	3,700
Total liabilities		$ 3,000	$ 3,800
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.
[2]	Our consolidated liabilities at June 30, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $28 million and $33 million; Accrued expenses and other liabilities, $96 million and $107 million; Long-term debt, $2.8 billion and $3.7 billion; and Total liabilities, $3.0 billion and $3.8 billion, respectively.
[3]	Our consolidated assets at June 30, 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, $112 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $424 million and $74 million; Trading assets, $50 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $12.1 billion and $12.6 billion; Derivative assets, $0 million and $1 million; Other assets, $339 million and $452 million; and Total assets, $13.0 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	192,998	$ 22,214	$ 9,136	60,714	120,866	297	(18,867)	(1,362)	893
Beginning balance, shares at Dec. 31, 2015				11,259,917	5,092,128,810
Stockholders' Equity Period Increase (Decrease)
Net income		11,020	11,020				11,020
Net income attributable to noncontrolling interests		67									67
Net income		11,087
Other comprehensive income (loss) attributable to parent, net of tax		2,651	2,651					2,651
Other comprehensive income (loss) attributable to noncontrolling interest, net of tax		(43)									(43)
Other comprehensive income (loss), net of tax		2,608
Noncontrolling interests, adjustments to Additional Paid in Capital			1			1
Noncontrolling interests											(122)
Total change in noncontrolling interests		(121)
Common stock issued		1,476	1,476			(184)	(185)		1,845
Common stock, shares issued					38,655,156
Common stock repurchased		(4,243)	(4,243)			500			(4,743)
Common stock repurchased, shares					(96,479,740)
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		684	684			(59)				743
Preferred stock converted to common shares		0	0	$ (684)		0			684
Preferred stock converted to common shares, shares				(684,244)	14,189,729
Common stock warrants repurchased/exercised		0	0			0
Preferred stock issued		2,101	2,101	$ 2,150		(49)
Preferred stock, shares issued				86,000
Common stock dividends		(3,834)	(3,834)			27	(3,861)
Preferred stock dividends		(764)	(764)				(764)
Tax benefit from stock incentive compensation		172	172			172
Stock incentive compensation expense		508	508			508
Net change in deferred compensation and related plans		(1,025)	(1,025)			(1,038)			13
Net change		8,649	8,747	$ 2,616	$ 0	(23)	6,210	2,651	(2,201)	(506)	(98)
Net change, shares				551,756	(43,634,855)
Ending balance at Jun. 30, 2016		202,661	201,745	$ 24,830	$ 9,136	60,691	127,076	2,948	(21,068)	(1,868)	916
Ending balance, shares at Jun. 30, 2016				11,811,673	5,048,493,955
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		11,267	11,267				11,267
Net income attributable to noncontrolling interests		129									129
Net income		11,396
Other comprehensive income (loss) attributable to parent, net of tax		1,027	1,027					1,027
Other comprehensive income (loss) attributable to noncontrolling interest, net of tax		5									5
Other comprehensive income (loss), net of tax		1,032
Noncontrolling interests, adjustments to Additional Paid in Capital			1			1
Noncontrolling interests											(135)
Total change in noncontrolling interests		(134)
Common stock issued		1,658	1,658			(26)	(184)		1,868
Common stock, shares issued					39,392,446
Common stock repurchased		(4,462)	(4,462)			750			(5,212)
Common stock repurchased, shares					(96,121,157)
Preferred stock issued to ESOP		0	0	$ 950		31				(981)
Preferred stock issued to ESOP, shares				950,000
Preferred stock released by ESOP		406	406			(21)				427
Preferred stock converted to common shares		0	0	$ (406)		41			365
Preferred stock converted to common shares, shares				(406,185)	7,389,435
Common stock warrants repurchased/exercised		(68)	(68)			(68)
Preferred stock issued		677	677	$ 690		(13)
Preferred stock, shares issued				27,600
Common stock dividends		(3,802)	(3,802)			25	(3,827)
Preferred stock dividends		(807)	(807)				(807)
Tax benefit from stock incentive compensation	[1]	0	0			0
Stock incentive compensation expense		534	534			534
Net change in deferred compensation and related plans		(782)	(782)			(799)			17
Net change		5,648	5,649	$ 1,234	$ 0	455	6,449	1,027	(2,962)	(554)	(1)
Net change, shares				571,415	(49,339,276)
Ending balance at Jun. 30, 2017		$ 206,145	$ 205,230	$ 25,785	$ 9,136	$ 60,689	$ 139,524	$ (2,110)	$ (25,675)	$ (2,119)	$ 915
Ending balance, shares at Jun. 30, 2017				12,104,127	4,966,770,050
[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		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income before noncontrolling interests		$ 11,396	$ 11,087
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses		1,160	2,160
Changes in fair value of MSRs, MHFS and LHFS carried at fair value		567	1,664
Depreciation, amortization and accretion		2,478	2,233
Other net losses		317	1,107
Stock-based compensation		1,186	1,176
Originations and purchases of MHFS and LHFS (1)	[1]	(86,008)	(85,821)
Proceeds from sales of and paydowns on mortgages originated for sale and LHFS (1)	[1]	53,404	59,824
Net change in:
Trading assets (1)	[1]	24,477	16,506
Deferred income taxes		1,281	(2,286)
Derivative assets and liabilities (1)	[1]	(2,133)	(10)
Other assets (1)	[1]	1,485	(8,667)
Other accrued expenses and liabilities (1)	[1]	(652)	(394)
Net cash provided (used) by operating activities		8,958	(1,421)
Net change in:
Federal funds sold, securities purchased under resale agreements and other short-term investments		(5,489)	(25,492)
Available-for-sale securities:
Sales proceeds		23,004	22,631
Prepayments and maturities		24,359	15,182
Purchases		(45,649)	(19,602)
Held-to-maturity securities:
Paydowns and maturities		4,606	2,951
Purchases		0	(19,217)
Nonmarketable equity investments:
Sales proceeds		2,146	1,060
Purchases		(1,225)	(1,998)
Loans:
Loans originated by banking subsidiaries, net of principal collected		2,317	(21,537)
Proceeds from sales (including participations) of loans held for investment		6,739	4,736
Purchases (including participations) of loans		(1,976)	(3,146)
Principal collected on nonbank entities’ loans		6,803	5,885
Loans originated by nonbank entities		(5,390)	(5,875)
Net cash paid for acquisitions		(3)	(28,987)
Proceeds from sales of foreclosed assets and short sales		2,974	3,704
Other, net (1)	[1]	(616)	201
Net cash provided (used) by investing activities		12,600	(69,504)
Net change in:
Deposits		(249)	22,161
Short-term borrowings		6,114	22,730
Long-term debt:
Proceeds from issuance		27,990	47,971
Repayment		(47,815)	(14,138)
Preferred stock:
Proceeds from issuance		677	2,101
Cash dividends paid		(807)	(764)
Common stock:
Proceeds from issuance		722	795
Stock tendered for payment of withholding taxes (1)	[1]	(368)	(473)
Repurchased		(4,462)	(4,243)
Cash dividends paid		(3,715)	(3,739)
Net change in noncontrolling interests		(66)	(135)
Other, net		(60)	(45)
Net cash provided (used) by financing activities		(22,039)	72,221
Net change in cash and due from banks		(481)	1,296
Cash and due from banks at beginning of period		20,729	19,111
Cash and due from banks at end of period		20,248	20,407
Supplemental cash flow disclosures:
Cash paid for interest		3,954	2,357
Cash paid for income taxes		$ 2,794	$ 4,255
[1]	Prior periods have been revised to conform to the current period presentation.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 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). 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 significantly different 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)); • income taxes; and • liabilities for contingent litigation losses (Note 11 (Legal Actions)). 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. Subject to completion of our assessment, we are not expecting this Update to have a material impact on our 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 June 30, 2017 and June 30, 2016 . Supplemental Cash Flow Information Significant noncash activities are presented below. Table 1.1: Supplemental Cash Flow Information Six months ended June 30, (in millions) 2017 2016 Trading assets retained from securitization of MHFS $ 34,317 23,403 Transfers from loans to MHFS 3,215 3,309 Transfers from available-for-sale to held-to-maturity securities 45,408 — Subsequent Events We have evaluated the effects of events that have occurred subsequent to June 30, 2017 , and there have been no material events that would require recognition in our second quarter 2017 consolidated financial statements or disclosure in the Notes to the consolidated financial statements.

Business Combinations

Business Combinations	6 Months Ended
	Jun. 30, 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). We completed no new acquisitions during the first half of 2017 , but did finalize the related purchase accounting for our 2016 acquisition of GE Capital's Commercial Distribution Finance and Vendor Finance businesses. As of June 30, 2017, we had one pending step acquisition involving an investment management firm with approximately $10 billion of assets under management, which we closed on July 1, 2017. We had previously been the majority owner.

Federal Funds Sold, Securities

Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments	6 Months Ended
	Jun. 30, 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 June 30, 2017 , and December 31, 2016 , were held at Federal Reserve Banks. Table 3.1: Fed Funds Sold and Other Short-Term Investments (in millions) Jun 30, Dec 31, Federal funds sold and securities purchased under resale agreements $ 67,687 58,215 Interest-earning deposits 195,700 200,671 Other short-term investments 1,319 7,152 Total $ 264,706 266,038 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 $1.6 billion and $2.9 billion as of June 30, 2017 , and December 31, 2016 , respectively. We have classified securities purchased under long-term resale agreements (generally one year or more), which totaled $20.7 billion and $21.3 billion at June 30, 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	6 Months Ended
	Jun. 30, 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 June 30, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ 17,950 11 (65 ) 17,896 Securities of U.S. states and political subdivisions 52,237 751 (975 ) 52,013 Mortgage-backed securities: Federal agencies 136,336 1,009 (1,407 ) 135,938 Residential 6,829 532 (2 ) 7,359 Commercial 5,347 82 (16 ) 5,413 Total mortgage-backed securities 148,512 1,623 (1,425 ) 148,710 Corporate debt securities 9,261 424 (83 ) 9,602 Collateralized loan and other debt obligations (1) 33,168 298 (11 ) 33,455 Other (2) 6,348 164 (14 ) 6,498 Total debt securities 267,476 3,271 (2,573 ) 268,174 Marketable equity securities: Perpetual preferred securities 446 23 (4 ) 465 Other marketable equity securities 168 398 (3 ) 563 Total marketable equity securities 614 421 (7 ) 1,028 Total available-for-sale securities 268,090 3,692 (2,580 ) 269,202 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies 44,704 666 (35 ) 45,335 Securities of U.S. states and political subdivisions 6,325 60 (55 ) 6,330 Federal agency and other mortgage-backed securities (3) 87,525 162 (806 ) 86,881 Collateralized loan obligations 993 5 — 998 Other (2) 845 1 — 846 Total held-to-maturity securities 140,392 894 (896 ) 140,390 Total $ 408,482 4,586 (3,476 ) 409,592 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 $923 million and $998 million , respectively, at June 30, 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 $345 million each at June 30, 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 $500 million and $501 million , respectively at June 30, 2017 , and $1.1 billion each at December 31, 2016 . (3) Predominantly consists of federal agency mortgage-backed securities at both June 30, 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 June 30, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (65 ) 11,486 — — (65 ) 11,486 Securities of U.S. states and political subdivisions (38 ) 8,048 (937 ) 19,964 (975 ) 28,012 Mortgage-backed securities: Federal agencies (1,271 ) 78,114 (136 ) 5,900 (1,407 ) 84,014 Residential (1 ) 90 (1 ) 78 (2 ) 168 Commercial (2 ) 369 (14 ) 670 (16 ) 1,039 Total mortgage-backed securities (1,274 ) 78,573 (151 ) 6,648 (1,425 ) 85,221 Corporate debt securities (9 ) 655 (74 ) 665 (83 ) 1,320 Collateralized loan and other debt obligations (1 ) 3,327 (10 ) 682 (11 ) 4,009 Other (3 ) 443 (11 ) 978 (14 ) 1,421 Total debt securities (1,390 ) 102,532 (1,183 ) 28,937 (2,573 ) 131,469 Marketable equity securities: Perpetual preferred securities (1 ) 32 (3 ) 50 (4 ) 82 Other marketable equity securities (3 ) 10 — — (3 ) 10 Total marketable equity securities (4 ) 42 (3 ) 50 (7 ) 92 Total available-for-sale securities (1,394 ) 102,574 (1,186 ) 28,987 (2,580 ) 131,561 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (35 ) 3,347 — — (35 ) 3,347 Securities of U.S. states and political subdivisions (55 ) 3,624 — — (55 ) 3,624 Federal agency and other mortgage-backed securities (806 ) 63,110 — — (806 ) 63,110 Collateralized loan obligations — — — — — — Other — — — — — — Total held-to-maturity securities (896 ) 70,081 — — (896 ) 70,081 Total $ (2,290 ) 172,655 (1,186 ) 28,987 (3,476 ) 201,642 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 the first half of 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 $32 million and $6.6 billion , respectively, at June 30, 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 June 30, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (65 ) 11,486 — — Securities of U.S. states and political subdivisions (932 ) 27,640 (43 ) 372 Mortgage-backed securities: Federal agencies (1,407 ) 84,014 — — Residential (1 ) 54 (1 ) 114 Commercial (3 ) 728 (13 ) 311 Total mortgage-backed securities (1,411 ) 84,796 (14 ) 425 Corporate debt securities (14 ) 630 (69 ) 690 Collateralized loan and other debt obligations (11 ) 4,009 — — Other (10 ) 997 (4 ) 424 Total debt securities (2,443 ) 129,558 (130 ) 1,911 Perpetual preferred securities (3 ) 63 (1 ) 19 Total available-for-sale securities (2,446 ) 129,621 (131 ) 1,930 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (35 ) 3,347 — — Securities of U.S. states and political subdivisions (55 ) 3,624 — — Federal agency and other mortgage-backed securities (805 ) 63,075 (1 ) 35 Collateralized loan obligations — — — — Other — — — — Total held-to-maturity securities (895 ) 70,046 (1 ) 35 Total $ (3,341 ) 199,667 (132 ) 1,965 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 June 30, 2017 Available-for-sale debt securities (1): Fair value: Securities of U.S. Treasury and federal agencies $ 17,896 1.25 % $ 10,987 1.04 % $ 5,883 1.55 % $ 1,026 1.80 % $ — — % Securities of U.S. states and political subdivisions 52,013 5.77 1,251 2.25 10,536 2.86 2,511 4.59 37,715 6.78 Mortgage-backed securities: Federal agencies 135,938 3.18 1 4.93 127 3.01 5,845 2.93 129,965 3.19 Residential 7,359 3.90 — — 25 5.55 19 3.76 7,315 3.89 Commercial 5,413 4.18 — — — — 45 2.90 5,368 4.19 Total mortgage-backed securities 148,710 3.25 1 4.93 152 3.42 5,909 2.93 142,648 3.27 Corporate debt securities 9,602 4.95 1,050 4.13 2,945 5.69 4,638 4.62 969 5.23 Collateralized loan and other debt obligations 33,455 2.89 — — 146 2.10 17,739 2.82 15,570 2.99 Other 6,498 2.32 40 3.24 779 2.54 1,632 1.91 4,047 2.43 Total available-for-sale debt securities at fair value $ 268,174 3.60 % $ 13,329 1.40 % $ 20,441 2.88 % $ 33,455 3.15 % $ 200,949 3.90 % 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 June 30, 2017 Held-to-maturity securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,704 2.12 % $ — — % $ 32,317 2.04 % $ 12,387 2.32 % $ — — % Securities of U.S. states and political subdivisions 6,325 6.04 — — 24 8.20 553 6.61 5,748 5.98 Federal agency and other mortgage-backed securities 87,525 3.11 — — — — — — 87,525 3.11 Collateralized loan obligations 993 2.72 — — — — 993 2.72 — — Other 845 2.03 — — 845 2.03 — — — — Total held-to-maturity debt securities at amortized cost $ 140,392 2.92 % $ — — % $ 33,186 2.04 % $ 13,933 2.52 % $ 93,273 3.29 % 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 June 30, 2017 Held-to-maturity securities: Fair value: Securities of U.S. Treasury and federal agencies $ 45,335 — 32,774 12,561 — Securities of U.S. states and political subdivisions 6,330 — 24 559 5,747 Federal agency and other mortgage-backed securities 86,881 — — — 86,881 Collateralized loan obligations 998 — — 998 — Other 846 — 846 — — Total held-to-maturity debt securities at fair value $ 140,390 — 33,644 14,118 92,628 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Gross realized gains $ 320 564 $ 561 949 Gross realized losses (48 ) (31 ) (84 ) (44 ) OTTI write-downs (51 ) (26 ) (104 ) (95 ) Net realized gains from available-for-sale securities 221 507 373 810 Net realized gains from nonmarketable equity investments 87 129 374 314 Net realized gains from debt securities and equity investments $ 308 636 $ 747 1,124 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 the first half of 2017 and 2016 . Table 4.8: OTTI Write-downs Quarter ended June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 OTTI write-downs included in earnings Debt securities: Securities of U.S. states and political subdivisions $ — 6 $ 8 10 Mortgage-backed securities: Residential 3 12 6 24 Commercial 41 — 66 1 Corporate debt securities 4 5 20 50 Other debt securities — 3 — 6 Total debt securities 48 26 100 91 Equity securities: Marketable equity securities: Other marketable equity securities 3 — 4 4 Total marketable equity securities 3 — 4 4 Total investment securities (1) 51 26 104 95 Nonmarketable equity investments (1) 22 104 98 233 Total OTTI write-downs included in earnings (1) $ 73 130 $ 202 328 (1) The quarters ended June 30, 2017 and 2016 , include $19 million and $29 million , respectively, in OTTI write-downs of oil and gas investments, of which $7 million and $5 million , respectively, related to investment securities and $12 million and $24 million , respectively, related to nonmarketable equity investments. Oil and gas related OTTI for the first half of 2017 and 2016 , totaled $58 million and $153 million , respectively, of which $22 million and $51 million , respectively, related to investment securities and $36 million and $102 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 OTTI on debt securities Recorded as part of gross realized losses: Credit-related OTTI $ 47 20 $ 99 81 Intent-to-sell OTTI 1 6 1 10 Total recorded as part of gross realized losses 48 26 100 91 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 ) (5 ) — 5 Commercial mortgage-backed securities (40 ) (1 ) (47 ) 2 Corporate debt securities 1 (9 ) 1 (13 ) Other debt securities — — — 2 Total changes to OCI for non-credit-related OTTI (42 ) (15 ) (51 ) (4 ) Total OTTI losses recorded on debt securities $ 6 11 $ 49 87 (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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Credit loss recognized, beginning of period $ 1,086 1,145 $ 1,043 1,092 Additions: For securities with initial credit impairments 2 — 8 38 For securities with previous credit impairments 45 20 91 43 Total additions 47 20 99 81 Reductions: For securities sold, matured, or intended/required to be sold (11 ) (83 ) (18 ) (89 ) For recoveries of previous credit impairments (1) (2 ) (2 ) (4 ) (4 ) Total reductions (13 ) (85 ) (22 ) (93 ) Credit loss recognized, end of period $ 1,120 1,080 $ 1,120 1,080 (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	6 Months Ended
	Jun. 30, 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 $3.9 billion and $4.4 billion at June 30, 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) Jun 30, Dec 31, Commercial: Commercial and industrial $ 331,113 330,840 Real estate mortgage 130,277 132,491 Real estate construction 25,337 23,916 Lease financing 19,174 19,289 Total commercial 505,901 506,536 Consumer: Real estate 1-4 family first mortgage 276,566 275,579 Real estate 1-4 family junior lien mortgage 42,747 46,237 Credit card 35,305 36,700 Automobile 57,958 62,286 Other revolving credit and installment 38,946 40,266 Total consumer 451,522 461,068 Total loans $ 957,423 967,604 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) Jun 30, Dec 31, Commercial foreign loans: Commercial and industrial $ 57,825 55,396 Real estate mortgage 8,359 8,541 Real estate construction 585 375 Lease financing 1,092 972 Total commercial foreign loans $ 67,861 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 June 30, Purchases $ 810 — 810 2,607 — 2,607 Sales (1,052 ) (84 ) (1,136 ) (385 ) (407 ) (792 ) Transfers to MHFS/LHFS (179 ) (1 ) (180 ) (69 ) (1 ) (70 ) Six months ended June 30, Purchases $ 1,969 2 1,971 27,253 — 27,253 Sales (1,339 ) (146 ) (1,485 ) (608 ) (679 ) (1,287 ) Transfers to MHFS/LHFS (658 ) (1 ) (659 ) (101 ) (4 ) (105 ) (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 June 30, 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 June 30, 2017 , and December 31, 2016 , we had $1.3 billion and $1.1 billion , respectively, 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) Jun 30, Dec 31, Commercial: Commercial and industrial $ 319,058 319,662 Real estate mortgage 7,601 7,833 Real estate construction 16,728 18,840 Lease financing 11 16 Total commercial 343,398 346,351 Consumer: Real estate 1-4 family first mortgage 35,685 33,498 Real estate 1-4 family junior lien mortgage 40,044 41,431 Credit card 106,329 101,895 Other revolving credit and installment 27,541 28,349 Total consumer 209,599 205,173 Total unfunded credit commitments $ 552,997 551,524 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Balance, beginning of period $ 12,287 12,668 12,540 12,512 Provision for credit losses 555 1,074 1,160 2,160 Interest income on certain impaired loans (1) (46 ) (51 ) (94 ) (99 ) Loan charge-offs: Commercial: Commercial and industrial (161 ) (437 ) (414 ) (786 ) Real estate mortgage (8 ) (3 ) (13 ) (6 ) Real estate construction — (1 ) — (1 ) Lease financing (13 ) (17 ) (20 ) (21 ) Total commercial (182 ) (458 ) (447 ) (814 ) Consumer: Real estate 1-4 family first mortgage (55 ) (123 ) (124 ) (260 ) Real estate 1-4 family junior lien mortgage (62 ) (133 ) (155 ) (266 ) Credit card (379 ) (320 ) (746 ) (634 ) Automobile (212 ) (176 ) (467 ) (387 ) Other revolving credit and installment (185 ) (163 ) (374 ) (338 ) Total consumer (893 ) (915 ) (1,866 ) (1,885 ) Total loan charge-offs (1,075 ) (1,373 ) (2,313 ) (2,699 ) Loan recoveries: Commercial: Commercial and industrial 83 69 165 145 Real estate mortgage 14 23 44 55 Real estate construction 4 4 12 12 Lease financing 6 5 8 8 Total commercial 107 101 229 220 Consumer: Real estate 1-4 family first mortgage 71 109 133 198 Real estate 1-4 family junior lien mortgage 66 71 136 130 Credit card 59 50 117 102 Automobile 86 86 174 170 Other revolving credit and installment 31 32 64 69 Total consumer 313 348 624 669 Total loan recoveries 420 449 853 889 Net loan charge-offs (655 ) (924 ) (1,460 ) (1,810 ) Other 5 (18 ) — (14 ) Balance, end of period $ 12,146 12,749 12,146 12,749 Components: Allowance for loan losses $ 11,073 11,664 11,073 11,664 Allowance for unfunded credit commitments 1,073 1,085 1,073 1,085 Allowance for credit losses $ 12,146 12,749 12,146 12,749 Net loan charge-offs (annualized) as a percentage of average total loans 0.27 % 0.39 0.31 0.39 Allowance for loan losses as a percentage of total loans 1.16 1.22 1.16 1.22 Allowance for credit losses as a percentage of total loans 1.27 1.33 1.27 1.33 (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 June 30, Balance, beginning of period $ 7,142 5,145 12,287 7,348 5,320 12,668 Provision (reversal of provision) for credit losses (97 ) 652 555 478 596 1,074 Interest income on certain impaired loans (14 ) (32 ) (46 ) (10 ) (41 ) (51 ) Loan charge-offs (182 ) (893 ) (1,075 ) (458 ) (915 ) (1,373 ) Loan recoveries 107 313 420 101 348 449 Net loan charge-offs (75 ) (580 ) (655 ) (357 ) (567 ) (924 ) Other 5 — 5 (18 ) — (18 ) Balance, end of period $ 6,961 5,185 12,146 7,441 5,308 12,749 Six months ended June 30, Balance, beginning of period $ 7,394 5,146 12,540 6,872 5,640 12,512 Provision (reversal of provision) for credit losses (186 ) 1,346 1,160 1,192 968 2,160 Interest income on certain impaired loans (29 ) (65 ) (94 ) (15 ) (84 ) (99 ) Loan charge-offs (447 ) (1,866 ) (2,313 ) (814 ) (1,885 ) (2,699 ) Loan recoveries 229 624 853 220 669 889 Net loan charge-offs (218 ) (1,242 ) (1,460 ) (594 ) (1,216 ) (1,810 ) Other — — — (14 ) — (14 ) Balance, end of period $ 6,961 5,185 12,146 7,441 5,308 12,749 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 June 30, 2017 Collectively evaluated (1) $ 6,131 3,844 9,975 500,942 421,646 922,588 Individually evaluated (2) 830 1,341 2,171 4,696 15,866 20,562 PCI (3) — — — 263 14,010 14,273 Total $ 6,961 5,185 12,146 505,901 451,522 957,423 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 March 31, 2017 . 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 $19.0 billion in criticized commercial and industrial loans and $5.2 billion in criticized commercial real estate (CRE) loans at June 30, 2017 , $2.6 billion and $664 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 June 30, 2017 By risk category: Pass $ 311,963 125,283 25,013 17,970 480,229 Criticized 19,019 4,875 311 1,204 25,409 Total commercial loans (excluding PCI) 330,982 130,158 25,324 19,174 505,638 Total commercial PCI loans (carrying value) 131 119 13 — 263 Total commercial loans $ 331,113 130,277 25,337 19,174 505,901 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 June 30, 2017 By delinquency status: Current-29 days past due (DPD) and still accruing $ 327,614 129,360 25,148 18,970 501,092 30-89 DPD and still accruing 694 166 132 115 1,107 90+ DPD and still accruing 42 2 10 — 54 Nonaccrual loans 2,632 630 34 89 3,385 Total commercial loans (excluding PCI) 330,982 130,158 25,324 19,174 505,638 Total commercial PCI loans (carrying value) 131 119 13 — 263 Total commercial loans $ 331,113 130,277 25,337 19,174 505,901 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 June 30, 2017 By delinquency status: Current-29 DPD $ 244,862 41,866 34,455 56,470 38,591 416,244 30-59 DPD 1,607 273 254 1,085 130 3,349 60-89 DPD 637 151 185 298 88 1,359 90-119 DPD 269 81 142 100 79 671 120-179 DPD 245 90 268 5 30 638 180+ DPD 1,378 255 1 — 28 1,662 Government insured/guaranteed loans (1) 13,589 — — — — 13,589 Total consumer loans (excluding PCI) 262,587 42,716 35,305 57,958 38,946 437,512 Total consumer PCI loans (carrying value) 13,979 31 — — — 14,010 Total consumer loans $ 276,566 42,747 35,305 57,958 38,946 451,522 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 $8.5 billion at June 30, 2017 , compared with $10.1 billion at December 31, 2016 . Of the $3.0 billion of consumer loans not government insured/guaranteed that are 90 days or more past due at June 30, 2017 , $789 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 $1.4 billion , or 0.5% of total first mortgages (excluding PCI), at June 30, 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 June 30, 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 $8.2 billion at June 30, 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 June 30, 2017 By FICO: < 600 $ 5,767 1,949 3,282 9,716 892 21,606 600-639 3,917 1,422 2,932 6,468 945 15,684 640-679 7,322 2,689 5,399 8,741 2,068 26,219 680-719 15,579 5,269 7,195 9,676 3,743 41,462 720-759 28,480 6,756 7,544 8,282 5,307 56,369 760-799 54,249 7,792 6,018 6,739 6,481 81,279 800+ 127,929 16,015 2,889 8,098 8,744 163,675 No FICO available 5,755 824 46 238 2,608 9,471 FICO not required — — — — 8,158 8,158 Government insured/guaranteed loans (2) 13,589 — — — — 13,589 Total consumer loans (excluding PCI) 262,587 42,716 35,305 57,958 38,946 437,512 Total consumer PCI loans (carrying value) 13,979 31 — — — 14,010 Total consumer loans $ 276,566 42,747 35,305 57,958 38,946 451,522 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 June 30, 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 June 30, 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% $ 124,277 15,923 140,200 121,430 16,464 137,894 60.01-80% 104,027 13,974 118,001 101,726 15,262 116,988 80.01-100% 16,229 7,827 24,056 15,795 8,765 24,560 100.01-120% (1) 2,334 3,158 5,492 2,644 3,589 6,233 > 120% (1) 981 1,359 2,340 1,066 1,613 2,679 No LTV/CLTV available 1,150 475 1,625 1,295 508 1,803 Government insured/guaranteed loans (2) 13,589 — 13,589 15,605 — 15,605 Total consumer loans (excluding PCI) 262,587 42,716 305,303 259,561 46,201 305,762 Total consumer PCI loans (carrying value) 13,979 31 14,010 16,018 36 16,054 Total consumer loans $ 276,566 42,747 319,313 275,579 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) Jun 30, Dec 31, Commercial: Commercial and industrial $ 2,632 3,216 Real estate mortgage 630 685 Real estate construction 34 43 Lease financing 89 115 Total commercial 3,385 4,059 Consumer: Real estate 1-4 family first mortgage (1) 4,413 4,962 Real estate 1-4 family junior lien mortgage 1,095 1,206 Automobile 104 106 Other revolving credit and installment 59 51 Total consumer 5,671 6,325 Total nonaccrual loans (excluding PCI) $ 9,056 10,384 (1) Includes MHFS of $140 million and $149 million at June 30, 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 $7.0 billion and $8.1 billion at June 30, 2017 and December 31, 2016 , respectively, which included $4.1 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 $1.5 billion at June 30, 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) Jun 30, 2017 Dec 31, 2016 Total (excluding PCI): $ 9,716 11,858 Less: FHA insured/guaranteed by the VA (1)(2) 8,873 10,883 Less: Student loans guaranteed under the Federal Family Education Loan Program (FFELP) (3) — 3 Total, not government insured/guaranteed $ 843 972 By segment and class, not government insured/guaranteed: Commercial: Commercial and industrial $ 42 28 Real estate mortgage 2 36 Real estate construction 10 — Total commercial 54 64 Consumer: Real estate 1-4 family first mortgage (2) 145 175 Real estate 1-4 family junior lien mortgage (2) 44 56 Credit card 411 452 Automobile 91 112 Other revolving credit and installment 98 113 Total consumer 789 908 Total, not government insured/guaranteed $ 843 972 (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 $215 million at June 30, 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 June 30, 2017 Commercial: Commercial and industrial $ 4,401 3,205 2,901 558 Real estate mortgage 1,654 1,337 1,325 238 Real estate construction 105 62 62 11 Lease financing 126 92 92 23 Total commercial 6,286 4,696 4,380 830 Consumer: Real estate 1-4 family first mortgage 15,256 13,299 8,677 905 Real estate 1-4 family junior lien mortgage 2,273 2,043 1,557 295 Credit card 317 316 316 113 Automobile 152 85 31 4 Other revolving credit and installment 129 123 113 24 Total consumer (2) 18,127 15,866 10,694 1,341 Total impaired loans (excluding PCI) $ 24,413 20,562 15,074 2,171 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 $1.4 billion and $1.5 billion at June 30, 2017 and December 31, 2016 , respectively, 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 $747 million and $403 million at June 30, 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 June 30, Six months ended June 30, 2017 2016 2017 2016 (in millions) Average recorded investment Recognized interest income Average recorded investment Recognized interest income Average recorded investment Recognized interest income Average recorded investment Recognized interest income Commercial: Commercial and industrial $ 3,390 36 3,803 21 3,457 69 3,146 40 Real estate mortgage 1,371 24 1,695 34 1,397 51 1,730 66 Real estate construction 66 2 116 3 75 3 122 5 Lease financing 98 — 93 — 110 — 79 — Total commercial 4,925 62 5,707 58 5,039 123 5,077 111 Consumer: Real estate 1-4 family first mortgage 13,602 185 16,278 211 13,866 375 16,595 432 Real estate 1-4 family junior lien mortgage 2,075 31 2,325 33 2,103 62 2,354 67 Credit card 313 9 293 8 308 17 295 17 Automobile 83 3 94 3 83 6 98 6 Other revolving credit and installment 114 2 84 2 110 4 80 3 Total consumer 16,187 230 19,074 257 16,470 464 19,422 525 Total impaired loans (excluding PCI) $ 21,112 292 24,781 315 21,509 587 24,499 636 Interest income: Cash basis of accounting $ 77 92 155 187 Other (1) 215 223 432 449 Total interest income $ 292 315 587 636 (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 loa

Other Assets

Other Assets	6 Months Ended
	Jun. 30, 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) Jun 30, Dec 31, Nonmarketable equity investments: Cost method: Federal bank stock $ 5,820 6,407 Private equity 1,367 1,465 Auction rate securities 420 525 Total cost method 7,607 8,397 Equity method: LIHTC (1) 9,828 9,714 Private equity 3,740 3,635 Tax-advantaged renewable energy 1,960 2,054 New market tax credit and other 295 305 Total equity method 15,823 15,708 Fair value (2) 3,986 3,275 Total nonmarketable equity investments 27,416 27,380 Corporate/bank-owned life insurance 19,430 19,325 Accounts receivable (3) 41,853 31,056 Interest receivable 5,401 5,339 Core deposit intangibles 1,193 1,620 Customer relationship and other amortized intangibles 940 1,089 Foreclosed assets: Residential real estate: Government insured/guaranteed (3) 149 197 Non-government insured/guaranteed 285 378 Non-residential real estate 347 403 Operating lease assets 9,713 10,089 Due from customers on acceptances 192 196 Other 12,047 17,469 Total other assets $ 118,966 114,541 (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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Net realized gains from nonmarketable equity investments $ 87 129 $ 374 314 All other (195 ) (135 ) (240 ) (321 ) Total $ (108 ) (6 ) $ 134 (7 ) 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 $9.8 billion and $9.7 billion at June 30, 2017 and December 31, 2016 , respectively. In second quarter and first half of 2017 , we recognized pre-tax losses of $227 million and $457 million , respectively, related to our LIHTC investments, compared with $199 million and $401 million , respectively, for the same periods a year ago. We also recognized total tax benefits of $347 million and $694 million in second quarter and first half of 2017 , which included tax credits recorded in income taxes of $260 million and $521 million for the same periods, respectively. In the second quarter and first half of 2016 , total tax benefits were $304 million and $611 million , respectively, which included tax credits of $230 million and $460 million for the same periods, respectively. We are periodically required to provide additional financial support during the investment period. Our liability for these unfunded commitments was $3.3 billion at June 30, 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	6 Months Ended
	Jun. 30, 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 June 30, 2017 Cash $ — 112 — 112 Federal funds sold, securities purchased under resale agreements and other short-term investments — 424 — 424 Trading assets 1,431 50 201 1,682 Investment securities (1) 5,145 — 381 5,526 Loans 5,456 12,096 121 17,673 Mortgage servicing rights 13,337 — — 13,337 Derivative assets 77 — — 77 Other assets 10,321 339 6 10,666 Total assets 35,767 13,021 709 49,497 Short-term borrowings — — 539 539 Derivative liabilities 92 28 (2) — 120 Accrued expenses and other liabilities 235 96 (2) 1 332 Long-term debt 3,282 2,835 (2) 122 6,239 Total liabilities 3,609 2,959 662 7,230 Noncontrolling interests — 86 — 86 Net assets $ 32,158 9,976 47 42,181 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 June 30, 2017 Residential mortgage loan securitizations: Conforming (2) $ 1,171,325 2,299 12,394 — (180 ) 14,513 Other/nonconforming 16,198 801 90 — (2 ) 889 Commercial mortgage securitizations 144,257 2,556 853 75 (33 ) 3,451 Collateralized debt obligations: Debt securities 1,157 — — — (20 ) (20 ) Loans (3) 1,511 1,473 — — — 1,473 Asset-based finance structures 4,862 3,755 — — — 3,755 Tax credit structures 29,774 10,811 — — (3,282 ) 7,529 Collateralized loan obligations 29 8 — — — 8 Investment funds 214 54 — — — 54 Other (4) 2,611 596 — (90 ) — 506 Total $ 1,371,938 22,353 13,337 (15 ) (3,517 ) 32,158 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,299 12,394 — 875 15,568 Other/nonconforming 801 90 — 2 893 Commercial mortgage securitizations 2,556 853 79 9,767 13,255 Collateralized debt obligations: Debt securities — — — 20 20 Loans (3) 1,473 — — — 1,473 Asset-based finance structures 3,755 — — 71 3,826 Tax credit structures 10,811 — — 1,024 11,835 Collateralized loan obligations 8 — — — 8 Investment funds 54 — — — 54 Other (4) 596 — 107 158 861 Total $ 22,353 13,337 186 11,917 47,793 (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 $10.3 billion at both June 30, 2017 , and December 31, 2016 . 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 $1.1 billion and $1.2 billion at June 30, 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 June 30, 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 in the second quarter and first half of 2017 was $13 million and $27 million , respectively, compared with $26 million and $56 million , respectively, in the same periods of 2016 . 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 June 30, 2017 , we held $420 million of ARS issued by VIEs compared with $453 million at December 31, 2016 . 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 June 30, 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 $2.0 billion and $2.1 billion , respectively, 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. In the first half of 2017 , we redeemed $150 million of trust preferred securities which were partially included in Tier 2 capital (50% credit in 2017 ) in the transitional framework and were not included under the fully-phased framework under the Basel III standards. 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 June 30, Proceeds from securitizations and whole loan sales $ 52,824 4 66,455 83 Fees from servicing rights retained 840 — 864 — Cash flows from other interests held (1) 641 — 627 — Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions 5 — 15 — Agency securitizations (3) 23 — 35 — Servicing advances, net of repayments (20 ) — (39 ) — Six months ended June 30, Proceeds from securitizations and whole loan sales $ 111,081 25 111,471 133 Fees from servicing rights retained 1,694 — 1,745 — Cash flows from other interests held (1) 1,475 — 1,034 1 Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions 7 — 18 — Agency securitizations (3) 46 — 82 — Servicing advances, net of repayments (162 ) — (107 ) — (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. Second quarter and first half of 2017 exclude $1.6 billion and $ 3.9 billion , respectively in delinquent insured/guaranteed loans that we service and have exercised our option to purchase out of GNMA pools, compared with $2.0 billion and $4.9 billion , respectively, in the same periods of 2016 . These loans are predominantly insured by the FHA or guaranteed by the VA. In the second quarter and first half of 2017 , we recognized net gains of $393 million and $525 million , respectively, from transfers accounted for as sales of financial assets, compared with $100 million and $295 million , respectively, in the same periods of 2016 . These net gains primarily relate to commercial mortgage securitizations and residential mortgage securitizations where the loans were not already carried at fair value. Sales with continuing involvement during the second quarter and first half of 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 the second quarter and first half of 2017 , we transferred $49.7 billion and $105.2 billion , respectively, in fair value of residential mortgages to unconsolidated VIEs and third-party investors and recorded the transfers as sales, compared with $65.0 billion and $102.3 billion , respectively, in the same periods of 2016 . 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 the first half of 2017 , we recorded a $957 million servicing asset, measured at fair value using a Level 3 measurement technique, securities of $3.5 billion , classified as Level 2, and a $14 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 the first half of 2016 , we recorded a $764 million servicing asset, securities of $3.2 billion , and a $15 million liability. Table 7.4 presents the key weighted-average assumptions we used to measure residential mortgage servicing rights at the date of securitization. Table 7.4: Residential Mortgage Servicing Rights Residential mortgage servicing rights 2017 2016 Quarter ended June 30, Prepayment speed (1) 12.8 % 12.1 Discount rate 6.9 6.7 Cost to service ($ per loan) (2) $ 152 141 Six months ended June 30, Prepayment speed (1) 11.5 % 12.5 Discount rate 6.8 6.8 Cost to service ($ per loan) (2) $ 142 143 (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 the second quarter and first half of 2017 , we transferred $3.3 billion and $6.6 billion , respectively, in carrying value of commercial mortgages to unconsolidated VIEs and third-party investors and recorded the transfers as sales, compared with $1.8 billion and $9.9 billion , respectively, in the same periods of 2016 . These transfers resulted in gains of $80 million and $176 million in the second quarter and first half of 2017 , respectively, because the loans were carried at lower of cost or market value (LOCOM), compared with gains of $58 million and $193 million , respectively, in the same periods of 2016 . In connection with these transfers, in the first half of 2017 , we recorded a servicing asset of $82 million , initially measured at fair value using a Level 3 measurement technique, and securities of $65 million , classified as Level 2. In the first half of 2016 , we recorded a servicing asset of $135 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 June 30, 2017 $ 12,789 24 — 487 538 Expected weighted-average life (in years) 6.2 3.8 0.0 5.5 5.3 Key economic assumptions: Prepayment speed assumption (3) 10.5 % 17.3 — Decrease in fair value from: 10% adverse change $ 560 1 — 25% adverse change 1,326 2 — Discount rate assumption 6.8 % 13.4 — 4.0 2.8 Decrease in fair value from: 100 basis point increase $ 632 — — 21 24 200 basis point increase 1,206 1 — 40 46 Cost to service assumption ($ per loan) 149 Decrease in fair value from: 10% adverse change 484 25% adverse change 1,210 Credit loss assumption — % 2.4 — 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 $2.0 billion at both June 30, 2017 , and December 31, 2016 . 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 June 30, 2017 , and December 31, 2016 , results in a decrease in fair value of $225 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 June 30, 2017 , and December 31, 2016 . The carrying amount of the loan at June 30, 2017 , and December 31, 2016 , was $2.1 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 $45 million and $154 million at June 30, 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) Six months ended June 30, (in millions) Jun 30, 2017 Dec 31, 2016 Jun 30, 2017 Dec 31, 2016 2017 2016 Commercial: Real estate mortgage $ 98,330 106,745 3,507 3,325 382 156 Total commercial 98,330 106,745 3,507 3,325 382 156 Consumer: Real estate 1-4 family first mortgage 1,149,427 1,160,191 14,287 16,453 395 534 Total consumer 1,149,427 1,160,191 14,287 16,453 395 534 Total off-balance sheet sold or securitized loans (2) $ 1,247,757 1,266,936 17,794 19,778 777 690 (1) Includes $1.6 billion and $1.7 billion of commercial foreclosed assets and $1.4 billion and $1.8 billion of consumer foreclosed assets at June 30, 2017 , and December 31, 2016 , respectively. (2) At June 30, 2017 , and December 31, 2016 , the table includes total loans of $1.2 trillion at both dates, delinquent loans of $9.1 billion and $9.8 billion , and foreclosed assets of $978 million 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 June 30, 2017 Secured borrowings: Municipal tender option bond securitizations $ 677 588 (540 ) — 48 Residential mortgage securitizations 124 121 (122 ) — (1 ) Total secured borrowings 801 709 (662 ) — 47 Consolidated VIEs: Commercial and industrial loans and leases 8,698 8,279 (2,055 ) (13 ) 6,211 Nonconforming residential mortgage loan securitizations 3,006 2,637 (895 ) — 1,742 Commercial real estate loans 1,922 1,922 — — 1,922 Structured asset finance 16 10 (7 ) — 3 Investment funds 52 52 (1 ) (32 ) 19 Other 140 121 (1 ) (41 ) 79 Total consolidated VIEs 13,834 13,021 (2,959 ) (86 ) 9,976 Total secured borrowings and consolidated VIEs $ 14,635 13,730 (3,621 ) (86 ) 10,023 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 December 31, 2016 , we had approximately $6.0 billion of private placement debt financing issued through a consolidated VIE. The issuance was classified as long-term debt in our consolidated financial statements. At December 31, 2016 , we pledged approximately $434 million in loans (principal and interest eligible to be capitalized) and $6.1 billion in available-for-sale securities to collateralize the VIE’s borrowings. These assets were not transferred to the VIE, and accordingly we excluded the VIE from the previous table. During second quarter 2017 , the

Mortgage Banking Activities

Mortgage Banking Activities	6 Months Ended
	Jun. 30, 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Fair value, beginning of period $ 13,208 11,333 $ 12,959 12,415 Servicing from securitizations or asset transfers (1) 436 477 1,019 843 Sales and other (2) (8 ) (22 ) (55 ) (22 ) Net additions 428 455 964 821 Changes in fair value: Due to changes in valuation model inputs or assumptions: Mortgage interest rates (3) (305 ) (779 ) (153 ) (1,863 ) Servicing and foreclosure costs (4) (14 ) (4 ) 13 23 Prepayment estimates and other (5) (41 ) (41 ) (46 ) 59 Net changes in valuation model inputs or assumptions (360 ) (824 ) (186 ) (1,781 ) Changes due to collection/realization of expected cash flows over time (487 ) (568 ) (948 ) (1,059 ) Total changes in fair value (847 ) (1,392 ) (1,134 ) (2,840 ) Fair value, end of period $ 12,789 10,396 $ 12,789 10,396 (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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Balance, beginning of period $ 1,402 1,359 $ 1,406 1,308 Purchases 26 24 44 45 Servicing from securitizations or asset transfers 37 38 82 135 Amortization (66 ) (68 ) (133 ) (135 ) Balance, end of period (1) $ 1,399 1,353 $ 1,399 1,353 Fair value of amortized MSRs: Beginning of period $ 2,051 1,725 $ 1,956 1,680 End of period 1,989 1,620 1,989 1,620 (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) Jun 30, 2017 Dec 31, 2016 Residential mortgage servicing: Serviced for others $ 1,189 1,205 Owned loans serviced 343 347 Subserviced for others 4 8 Total residential servicing 1,536 1,560 Commercial mortgage servicing: Serviced for others 475 479 Owned loans serviced 130 132 Subserviced for others 8 8 Total commercial servicing 613 619 Total managed servicing portfolio $ 2,149 2,179 Total serviced for others $ 1,664 1,684 Ratio of MSRs to related loans serviced for others 0.85 % 0.85 Table 8.4 presents the components of mortgage banking noninterest income. Table 8.4: Mortgage Banking Noninterest Income Quarter ended June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Servicing income, net: Servicing fees: Contractually specified servicing fees $ 900 949 $ 1,807 1,903 Late charges 44 42 92 90 Ancillary fees 59 54 109 115 Unreimbursed direct servicing costs (1) (121 ) (203 ) (244 ) (356 ) Net servicing fees 882 842 1,764 1,752 Changes in fair value of MSRs carried at fair value: Due to changes in valuation model inputs or assumptions (2) (A) (360 ) (824 ) (186 ) (1,781 ) Changes due to collection/realization of expected cash flows over time (487 ) (568 ) (948 ) (1,059 ) Total changes in fair value of MSRs carried at fair value (847 ) (1,392 ) (1,134 ) (2,840 ) Amortization (66 ) (68 ) (133 ) (135 ) Net derivative gains from economic hedges (3) (B) 431 978 359 2,433 Total servicing income, net 400 360 856 1,210 Net gains on mortgage loan origination/sales activities 748 1,054 1,520 1,802 Total mortgage banking noninterest income $ 1,148 1,414 $ 2,376 3,012 Market-related valuation changes to MSRs, net of hedge results (2)(3) (A)+(B) $ 71 154 $ 173 652 (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 $167 million at June 30, 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Balance, beginning of period $ 222 355 $ 229 378 Provision for repurchase losses: Loan sales 6 8 14 15 Change in estimate (1) (45 ) (89 ) (53 ) (108 ) Net reductions (39 ) (81 ) (39 ) (93 ) Losses (5 ) (19 ) (12 ) (30 ) Balance, end of period $ 178 255 $ 178 255 (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	6 Months Ended
	Jun. 30, 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 June 30, 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) $ 3,721 (2,322 ) 1,399 3,595 (2,189 ) 1,406 Core deposit intangibles 12,834 (11,641 ) 1,193 12,834 (11,214 ) 1,620 Customer relationship and other intangibles 3,934 (2,994 ) 940 3,928 (2,839 ) 1,089 Total amortized intangible assets $ 20,489 (16,957 ) 3,532 20,357 (16,242 ) 4,115 Unamortized intangible assets: MSRs (carried at fair value) (2) $ 12,789 12,959 Goodwill 26,573 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 June 30, 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 Six months ended June 30, 2017 (actual) $ 133 427 156 716 Estimate for the remainder of 2017 $ 127 424 149 700 Estimate for year ended December 31, 2018 227 769 293 1,289 2019 201 108 309 2020 184 89 273 2021 159 76 235 2022 140 63 203 (1) The six months ended June 30, 2017 balance includes $7 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 — (84 ) — (84 ) Goodwill from business combinations — 1,518 — 1,518 June 30, 2016 $ 16,849 8,909 1,205 26,963 December 31, 2016 $ 16,849 8,585 1,259 26,693 Reclassification of goodwill held for sale to Other Assets (1) — (96 ) — (96 ) Reduction in goodwill related to divested businesses and other — (24 ) — (24 ) June 30, 2017 (1) $ 16,849 8,465 1,259 26,573 (1) Goodwill classified as held-for-sale in other assets of $96 million as of June 30, 2017 relates to the sales agreement for Wells Fargo Insurance Services USA (and related businesses). No goodwill was classified as held-for-sale in other assets at December 31, 2016 and 2015 . 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	6 Months Ended
	Jun. 30, 2017
Guarantees [Abstract]
Guarantees, Pledged Assets and Collateral	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 June 30, 2017 Standby letters of credit (1) $ 38 14,725 8,420 3,451 685 27,281 8,915 Securities lending and other indemnifications (2) — 1 — 1 600 602 2 Written put options (3) (334 ) 14,781 10,702 4,263 1,244 30,990 17,899 Loans and MHFS sold with recourse (4) 51 191 547 928 8,865 10,531 7,751 Factoring guarantees (5) — 621 — — — 621 557 Other guarantees 1 — 6 2 4,228 4,236 4 Total guarantees $ (244 ) 30,319 19,675 8,645 15,622 74,261 35,128 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 $9.1 billion and $9.2 billion at June 30, 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 $67 million and $175 million with related collateral of $533 million and $991 million at June 30, 2017 , and December 31, 2016 , respectively. Estimated maximum exposure to loss was $600 million at June 30, 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 and $2 million respectively, of loans associated with these agreements in the second quarter and first half of 2017 , and $1 million and $2 million in the same periods of 2016 , respectively. (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 a 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 $13.0 billion and $13.4 billion at June 30, 2017 , and December 31, 2016 , respectively, which can only be used to settle the liabilities of those entities. The table also excludes $709 million and $1.1 billion in assets pledged in transactions with VIE's accounted for as secured borrowings at June 30, 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) Jun 30, Dec 31, Trading assets and other (1) $ 107,374 84,603 Investment securities (2) 75,174 90,946 Mortgages held for sale and loans (3) 496,164 516,112 Total pledged assets $ 678,712 691,661 (1) Consists of trading assets of $36.4 billion and $33.2 billion at June 30, 2017 , and December 31, 2016 , respectively and off-balance sheet securities of $71.0 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 $107.3 billion and $84.2 billion at June 30, 2017 , and December 31, 2016 , respectively that permit the secured parties to sell or repledge the collateral. (2) Includes carrying value of $4.6 billion and $6.2 billion (fair value of $4.6 billion and $ 6.2 billion ) in collateral for repurchase agreements at June 30, 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 $87 million and $617 million in collateral pledged under repurchase agreements at June 30, 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 $4.5 billion and $15.8 billion at June 30, 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 $1.1 billion and $1.2 billion at June 30, 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) Jun 30, Dec 31, Assets: Resale and securities borrowing agreements Gross amounts recognized $ 119,721 91,123 Gross amounts offset in consolidated balance sheet (1) (31,383 ) (11,680 ) Net amounts in consolidated balance sheet (2) 88,338 79,443 Collateral not recognized in consolidated balance sheet (3) (88,141 ) (78,837 ) Net amount (4) $ 197 606 Liabilities: Repurchase and securities lending agreements Gross amounts recognized (5) $ 109,536 89,111 Gross amounts offset in consolidated balance sheet (1) (31,383 ) (11,680 ) Net amounts in consolidated balance sheet (6) 78,153 77,431 Collateral pledged but not netted in consolidated balance sheet (7) (77,796 ) (77,184 ) Net amount (8) $ 357 247 (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 June 30, 2017 , and December 31, 2016 , includes $67.6 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 $20.7 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 June 30, 2017 , and December 31, 2016 , we have received total collateral with a fair value of $130.7 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 $69.8 billion at June 30, 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 June 30, 2017 , and December 31, 2016 , we have pledged total collateral with a fair value of $111.4 billion and $91.4 billion , respectively, of which, the counterparty does not have the right to sell or repledge $4.7 billion as of June 30, 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) Jun 30, Dec 31, Repurchase agreements: Securities of U.S. Treasury and federal agencies $ 52,225 34,335 Securities of U.S. States and political subdivisions 131 81 Federal agency mortgage-backed securities 32,079 32,669 Non-agency mortgage-backed securities 1,679 2,167 Corporate debt securities 8,109 6,829 Asset-backed securities 2,352 3,010 Equity securities 937 1,309 Other 1,088 1,704 Total repurchases 98,600 82,104 Securities lending: Securities of U.S. Treasury and federal agencies 108 152 Federal agency mortgage-backed securities 174 104 Non-agency mortgage-backed securities — 1 Corporate debt securities 611 653 Equity securities (1) 10,043 6,097 Total securities lending 10,936 7,007 Total repurchases and securities lending $ 109,536 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 June 30, 2017 Repurchase agreements $ 80,504 9,792 3,790 4,514 98,600 Securities lending 8,802 518 1,616 — 10,936 Total repurchases and securities lending (1) $ 89,306 10,310 5,406 4,514 109,536 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	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Legal Actions	Note 11: Legal Actions Wells Fargo and certain of our subsidiaries are involved in a number of judicial, regulatory, arbitration and other proceedings concerning matters arising from the conduct of our business activities, and many of those proceedings expose Wells Fargo to potential financial loss. These proceedings include actions brought against Wells Fargo and/or our subsidiaries with respect to corporate related matters and transactions in which Wells Fargo and/or our subsidiaries were involved. In addition, Wells Fargo and our subsidiaries may be requested to provide information or otherwise cooperate with government authorities in the conduct of investigations of other persons or industry groups. Although there can be no assurance as to the ultimate outcome, Wells Fargo and/or our subsidiaries have generally denied, or believe we have a meritorious defense and will deny, liability in all significant legal actions pending against us, including the matters described below, and we intend to defend vigorously each case, other than matters we describe as having settled. We establish accruals for legal actions when potential losses associated with the actions become probable and the costs can be reasonably estimated. For such accruals, we record the amount we consider to be the best estimate within a range of potential losses that are both probable and estimable; however, if we cannot determine a best estimate, then we record the low end of the range of those potential losses. The actual costs of resolving legal actions may be substantially higher or lower than the amounts accrued for those actions. ATM ACCESS FEE LITIGATION In October 2011, plaintiffs filed a putative class action, Mackmin, et. al. v. Visa, Inc. et. al. , against Wells Fargo & Company, Wells Fargo Bank, N.A., Visa, MasterCard, and several other banks in the United States District Court for the District of Columbia. Plaintiffs allege that the Visa and MasterCard requirement that if an ATM operator charges an access fee on Visa and MasterCard transactions, then that fee cannot be greater than the access fee charged for transactions on other networks violates antitrust rules. Plaintiffs seek treble damages, restitution, injunctive relief and attorneys’ fees where available under federal and state law. Two other antitrust cases which make similar allegations were filed in the same court, but these cases did not name Wells Fargo as a defendant. On February 13, 2013, the district court granted defendants’ motions to dismiss and dismissed the three actions. Plaintiffs appealed the dismissals and, on August 4, 2015, the United States Court of Appeals for the District of Columbia Circuit vacated the district court’s decisions and remanded the three cases to the district court for further proceedings. On June 28, 2016, the United States Supreme Court granted defendants’ petitions for writ of certiorari to review the decisions of the United States Court of Appeals for the District of Columbia. On November 17, 2016, the United States Supreme Court dismissed the petitions as improvidently granted, and the three cases returned to the district court for further proceedings. AUTO LENDING MATTERS As the Company centralizes operations in its dealer services business and tightens controls and oversight of third-party risk management, the Company anticipates it will identify and remediate issues related to historical practices concerning the origination, servicing, and/or collection of indirect consumer auto loans, including related insurance products. For example, in July 2017, the Company announced a plan to remediate customers who may have been financially harmed due to issues related to automobile collateral protection insurance (CPI) policies purchased through a third-party vendor on their behalf (based on an understanding by the vendor that the borrowers’ insurance had lapsed). The Company determined that certain external vendor processes and operational controls were inadequate, and, as a result, customers may have been charged premiums for CPI even if they were paying for their own vehicle insurance, as required, and in some cases the CPI premiums may have contributed to a default that led to their vehicle’s repossession. The Company discontinued the CPI program in September 2016. Multiple putative class action cases alleging, among other things, unfair and deceptive practices relating to these CPI policies, have been filed against the Company in United States federal courts, including in the United States District Courts for the Northern District of California and Southern District of New York. In addition, the Company has identified certain issues related to the unused portion of guaranteed auto protection waiver or insurance agreements between the dealer and, by assignment, the lender, which may result in refunds to customers in certain states. These and other issues related to the origination, servicing and/or collection of indirect consumer auto loans, including related insurance products, may subject the Company to formal or informal inquiries, investigations or examinations from federal, state and/or local government agencies, and may also subject the Company to litigation. CONSUMER DEPOSIT ACCOUNT RELATED REGULATORY INVESTIGATION The Consumer Financial Protection Bureau (CFPB) has commenced an investigation into whether customers were unduly harmed by the Company’s procedures regarding the freezing (and, in many cases, closing) of consumer deposit accounts after the Company detected suspected fraudulent activity (by third-parties or account holders) that affected those accounts. INADVERTENT CLIENT INFORMATION DISCLOSURE In July 2017, the Company inadvertently provided certain client information in response to a third-party subpoena issued in a civil litigation. The Company obtained temporary restraining orders in New Jersey and New York state courts requiring the electronic data and all copies to be delivered to the New Jersey state court for safekeeping. The Company has made voluntary self-disclosure to various regulatory agencies. INTERCHANGE LITIGATION Plaintiffs representing a putative class of merchants have filed putative class actions, and individual merchants have filed individual actions, against Wells Fargo Bank, N.A., Wells Fargo & Company, Wachovia Bank, N.A. and Wachovia Corporation regarding the interchange fees associated with Visa and MasterCard payment card transactions. Visa, MasterCard and several other banks and bank holding companies are also named as defendants in these actions. These actions have been consolidated in the United States District Court for the Eastern District of New York. 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 action 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 United States 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. MORTGAGE INTEREST RATE LOCK RELATED REGULATORY INVESTIGATION The CFPB has commenced an investigation into the Company’s policies and procedures regarding the circumstances in which the Company required customers to pay fees for the extension of interest rate lock periods for residential mortgages. MORTGAGE RELATED REGULATORY INVESTIGATIONS Federal and state government agencies, including the United States Department of Justice (the “Department of Justice”), continue investigations or examinations of certain mortgage related activities of Wells Fargo and predecessor institutions. Wells Fargo, for itself and for predecessor institutions, has responded, and continues to respond, to requests from these agencies seeking information regarding the origination, underwriting and securitization of residential mortgages, including sub-prime mortgages. These agencies have advanced theories of purported liability with respect to certain of these activities. The Department of Justice and Wells Fargo continue to discuss the matter, including potential settlement of the Department of Justice's concerns; however, litigation with these agencies, including with the Department of Justice, remains a possibility. Other financial institutions have entered into similar settlements with these agencies, the nature of which related to the specific activities of those financial institutions, including the imposition of significant financial penalties and remedial actions. OFAC RELATED INVESTIGATION The Company has self-identified an issue whereby certain foreign banks utilized a Wells Fargo software-based solution to conduct import/export trade-related financing transactions with countries and entities prohibited by the Office of Foreign Assets Control (“OFAC”) of the United States Department of the Treasury. We do not believe any funds related to these transactions flowed through accounts at Wells Fargo as a result of the aforementioned conduct. The Company has made a voluntary self-disclosure to OFAC and is cooperating with an inquiry from the Department of Justice. ORDER OF POSTING LITIGATION Plaintiffs filed a series of putative class actions against Wachovia Bank, N.A. and Wells Fargo Bank, N.A., as well as many other banks, challenging the “high to low” order in which the banks post debit card transactions to consumer deposit accounts. Most of these actions were consolidated in multi-district litigation proceedings (the “MDL proceedings”) in the United States District Court for the Southern District of Florida. The court in the MDL proceedings has certified a class of putative plaintiffs, and Wells Fargo moved to compel arbitration of the claims of unnamed class members. The court denied the motions to compel arbitration on October 17, 2016. Wells Fargo has appealed this decision to the Eleventh Circuit Court of Appeals. RMBS TRUSTEE LITIGATION In November 2014, a group of institutional investors (the “Institutional Investor Plaintiffs”) filed a putative class action 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 Wells Fargo 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”). The Company's motion to dismiss the Federal Court Complaint was granted in part and denied in part in March 2017 . In May 2017, the Company filed third-party complaints against certain investment advisors affiliated with the Institutional Investor Plaintiffs seeking contribution with respect to claims alleged in the Federal Court Complaint. 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 (the “State Court Action”). The Company has moved to dismiss the complaint. In July 2017, certain of the plaintiffs from the State Court Action filed a civil complaint relating to Wells Fargo Bank, N.A.'s setting aside reserves for legal fees and expenses in connection with the liquidation of eleven RMBS trusts at issue in the State Court Action. The complaint seeks, among other relief, declarations that Wells Fargo Bank, N.A. is not entitled to indemnification, the advancement of funds or the taking of reserves from trust funds for legal fees and expenses it incurs in defending the claims in the State Court Action. SALES PRACTICES MATTERS Federal, state and local government agencies, including the 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 separate putative class actions 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 claims regarding certain 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. In the unlikely event that the $142 million settlement total is not enough to provide remediation, pay attorneys' fees, pay settlement fund claims administration costs, and have at least $25 million left over to distribute to all class members, the Company will contribute additional funds to the settlement. The court granted preliminary approval of the settlement in July 2017. A final approval hearing has been scheduled for the first quarter of 2018. 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 duty 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 two separate actions 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 pending in the United States District Courts for the Northern District of California and Eastern District of New York on behalf of employees who allege that 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 actions 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 United States 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 have moved for judgment in their favor as a matter of law. In August 2017, the parties reached a settlement in which the Company will pay $108 million . The settlement amount does not include plaintiffs’ attorneys fees, which are subject to court approval. OUTLOOK As described above, the Company establishes accruals for legal actions when potential losses associated with the actions become probable and the costs can be reasonably estimated. The high end of the range of reasonably possible potential losses in excess of the Company’s accrual for probable and estimable losses was approximately $3.3 billion as of June 30, 2017 . The increase in the high end of the range from March 31, 2017 was due to a variety of matters, including the Company's existing mortgage related regulatory investigations. 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 accrual 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	6 Months Ended
	Jun. 30, 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 June 30, 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) $ 242,711 2,657 1,205 235,222 6,587 2,710 Foreign exchange contracts (1) 32,640 581 1,445 25,861 673 2,779 Total derivatives designated as qualifying hedging instruments 3,238 2,650 7,260 5,489 Derivatives not designated as hedging instruments Economic hedges: Interest rate contracts (2) 235,234 350 307 228,051 1,098 1,441 Equity contracts 9,641 672 54 7,964 545 83 Foreign exchange contracts 17,007 32 429 20,435 626 165 Credit contracts – protection purchased 436 71 — 482 102 — Subtotal 1,125 790 2,371 1,689 Customer accommodation trading and other derivatives: Interest rate contracts 6,790,132 16,211 14,741 6,018,370 57,583 61,058 Commodity contracts 66,260 1,534 1,666 65,532 3,057 2,551 Equity contracts 171,899 5,671 6,966 151,675 4,813 6,029 Foreign exchange contracts 345,994 7,673 7,381 318,999 9,595 9,798 Credit contracts – protection sold 10,845 169 266 10,483 85 389 Credit contracts – protection purchased 21,493 264 235 19,964 365 138 Other contracts 966 — 34 961 — 47 Subtotal 31,522 31,289 75,498 80,010 Total derivatives not designated as hedging instruments 32,647 32,079 77,869 81,699 Total derivatives before netting 35,885 34,729 85,129 87,188 Netting (3) (22,612 ) (23,093 ) (70,631 ) (72,696 ) Total $ 13,273 11,636 14,498 14,492 (1) Notional amounts presented exclude $500 million and $1.9 billion of interest rate contracts at June 30, 2017 , and December 31, 2016 , respectively, for certain derivatives that are combined for designation as a hedge on a single instrument. The notional amount for foreign exchange contracts at June 30, 2017 , and December 31, 2016 , excludes $12.9 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 $26.6 billion and $28.9 billion of gross derivative assets and liabilities, respectively, at June 30, 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 $9.3 billion and $5.8 billion , respectively, at June 30, 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 (1) Gross amounts offset in consolidated balance sheet (1)(2) Net amounts in consolidated balance sheet Gross amounts not offset in consolidated balance sheet (Disclosure-only netting) (3) Net amounts Percent exchanged in over-the-counter market (1)(4) June 30, 2017 Derivative assets Interest rate contracts $ 19,218 (12,424 ) 6,794 (360 ) 6,434 98 % Commodity contracts 1,534 (683 ) 851 (6 ) 845 80 Equity contracts 6,343 (3,319 ) 3,024 (452 ) 2,572 76 Foreign exchange contracts 8,286 (5,905 ) 2,381 (63 ) 2,318 100 Credit contracts – protection sold 169 (35 ) 134 — 134 10 Credit contracts – protection purchased 335 (246 ) 89 (4 ) 85 96 Total derivative assets $ 35,885 (22,612 ) 13,273 (885 ) 12,388 Derivative liabilities Interest rate contracts $ 16,253 (12,396 ) 3,857 (1,899 ) 1,958 98 % Commodity contracts 1,666 (321 ) 1,345 (22 ) 1,323 88 Equity contracts 7,020 (3,223 ) 3,797 (394 ) 3,403 84 Foreign exchange contracts 9,255 (6,921 ) 2,334 (659 ) 1,675 100 Credit contracts – protection sold 266 (227 ) 39 (33 ) 6 93 Credit contracts – protection purchased 235 (5 ) 230 (1 ) 229 8 Other contracts 34 — 34 — 34 100 Total derivative liabilities $ 34,729 (23,093 ) 11,636 (3,008 ) 8,628 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) In second quarter, 2017, we adopted Settlement to Market treatment for the cash collateralizing our interest rate derivative contracts with certain centrally cleared counterparties. As a result of this adoption, the “gross amounts recognized” and “gross amounts offset in the consolidated balance sheet” columns do not include exposure with certain centrally cleared counterparties because the contracts are considered settled by the collateral. Likewise, what remains in these gross amount columns consists primarily of over-the-counter (OTC) market contracts for most of the contract types as reflected by the high percentage of OTC contracts in the “percent exchanged in over-the counter market” column as of June 30, 2017. (2) 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 $289 million and $348 million related to derivative assets and $83 million and $114 million related to derivative liabilities at June 30, 2017 , and December 31, 2016 , respectively. Cash collateral totaled $3.6 billion and $4.3 billion , netted against derivative assets and liabilities, respectively, at June 30, 2017 , and $4.8 billion and $7.1 billion , respectively, at December 31, 2016 . (3) 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. (4) 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 June 30, 2017 Net interest income (expense) recognized on derivatives $ (122 ) (2 ) 372 2 (49 ) 201 Gains (losses) recorded in noninterest income Recognized on derivatives (287 ) (10 ) 431 (87 ) 1,426 1,473 Recognized on hedged item 268 6 (399 ) 86 (1,365 ) (1,404 ) Net recognized on fair value hedges (ineffective portion) (1) $ (19 ) (4 ) 32 (1 ) 61 69 Quarter ended June 30, 2016 Net interest income (expense) recognized on derivatives $ (170 ) (2 ) 483 2 15 328 Gains (losses) recorded in noninterest income Recognized on derivatives (1,012 ) (5 ) 1,983 134 (455 ) 645 Recognized on hedged item 1,018 6 (1,762 ) (133 ) 394 (477 ) Net recognized on fair value hedges (ineffective portion) (1) $ 6 1 221 1 (61 ) 168 Six months ended June 30, 2017 Net interest income (expense) recognized on derivatives (1) $ (253 ) (4 ) 799 6 (82 ) 466 Gains (losses) recorded in noninterest income Recognized on derivatives (161 ) (11 ) (133 ) (129 ) 1,583 1,149 Recognized on hedged item 127 6 141 130 (1,676 ) (1,272 ) Net recognized on fair value hedges (ineffective portion) $ (34 ) (5 ) 8 1 (93 ) (123 ) Six months ended June 30, 2016 Net interest income (expense) recognized on derivatives (1) $ (351 ) (4 ) 965 2 31 643 Gains (losses) recorded in noninterest income Recognized on derivatives (2,695 ) (42 ) 5,086 68 1,163 3,580 Recognized on hedged item 2,709 39 (4,569 ) (74 ) (1,008 ) (2,903 ) Net recognized on fair value hedges (ineffective portion) $ 14 (3 ) 517 (6 ) 155 677 (1) The second quarter and first half of 2017 included $0 million and $(1) million , respectively, and the second quarter and first half of 2016 included $(3) million and $(7) million , respectively, 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 $309 million (pre tax) of deferred net gains on derivatives in OCI at June 30, 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Gains (losses) (pre tax) recognized in OCI on derivatives $ 376 1,057 243 3,056 Gains (pre tax) reclassified from cumulative OCI into net income (1) 153 265 355 521 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 $431 million and $359 million in the second quarter and first half of 2017, respectively, and $978 million and $2.4 billion in the second quarter and first half of 2016 , respectively, which are included in mortgage banking noninterest income. The aggregate fair value of these derivatives was a net asset of $96 million at June 30, 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 $12 million and net liability of $6 million at June 30, 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Net gains (losses) recognized on economic hedges derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (1) $ 351 566 342 1,431 Other (2) (51 ) (117 ) (45 ) (252 ) Equity contracts (3) (205 ) 205 (686 ) 288 Foreign exchange contracts (2) (441 ) 495 (534 ) 329 Credit contracts (2) 10 — 14 — Subtotal (4) (336 ) 1,149 (909 ) 1,796 Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (5) 254 510 447 975 Other (6) 18 (280 ) 63 (730 ) Commodity contracts (6) 15 64 75 117 Equity contracts (6) (565 ) (315 ) (1,674 ) (295 ) Foreign exchange contracts (6) 16 276 201 498 Credit contracts (6) (13 ) (25 ) (28 ) (41 ) Other (2) 2 (9 ) 14 (30 ) Subtotal (273 ) 221 (902 ) 494 Net gains (losses) recognized related to derivatives not designated as hedging instruments $ (609 ) 1,370 (1,811 ) 2,290 (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 $(48) million and $(46) million for the second quarter and first half of 2017, respectively, and $(113) million and $(244) million for the second quarter and first half of 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 June 30, 2017 Credit default swaps on: Corporate bonds $ 21 1,860 470 1,288 572 1,197 2017 - 2027 Structured products 111 250 244 221 29 153 2020 - 2047 Credit protection on: Default swap index — 4,638 761 494 4,144 6,803 2017 - 2027 Commercial mortgage-backed securities index 116 476 — 435 41 157 2047 - 2058 Asset-backed securities index 17 43 — 39 4 5 2045 - 2046 Other 1 3,578 3,579 — 3,578 11,137 2017 - 2028 Total credit derivatives $ 266 10,845 5,054 2,477 8,368 19,452 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 a 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 $10.4 billion at June 30, 2017 , and $12.8 billion at December 31, 2016 , for which we posted $8.1 billion and $8.9 billion , respectively, in collateral in the normal course of business. A credit rating below investment grade is the credit-risk-related contingent feature that if triggered requires the maximum amount of collateral to be posted. If the credit rating of our debt had been downgraded below investment grade , on June 30, 2017 , or December 31, 2016 , we would have been required to post additional collateral of $2.4 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	6 Months Ended
	Jun. 30, 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 June 30, 2017 Trading assets $ — — — 832 344 — Available-for-sale securities: Securities of U.S. Treasury and federal agencies — — — 14,940 2,956 — Securities of U.S. states and political subdivisions — — — — 50,456 208 Mortgage-backed securities — 41 — — 148,097 76 Other debt securities (1) — 491 1,129 — 45,523 26 Total debt securities — 532 1,129 14,940 247,032 310 Total marketable equity securities — — — — 287 — Total available-for-sale securities — 532 1,129 14,940 247,319 310 Derivatives assets — — — 21 3 — Derivatives liabilities — — — (18 ) (7 ) — 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 June 30, 2017 Trading assets Securities of U.S. Treasury and federal agencies $ 13,484 3,061 — — 16,545 Securities of U.S. states and political subdivisions — 3,070 9 — 3,079 Collateralized loan obligations — 386 403 — 789 Corporate debt securities — 10,229 26 — 10,255 Mortgage-backed securities — 22,480 — — 22,480 Asset-backed securities — 1,160 — — 1,160 Equity securities 27,286 240 — — 27,526 Total trading securities (1) 40,770 40,626 438 — 81,834 Other trading assets — 1,734 39 — 1,773 Total trading assets 40,770 42,360 477 — 83,607 Securities of U.S. Treasury and federal agencies 14,940 2,956 — — 17,896 Securities of U.S. states and political subdivisions — 50,456 1,557 (2) — 52,013 Mortgage-backed securities: Federal agencies — 135,938 — — 135,938 Residential — 7,358 1 — 7,359 Commercial — 5,338 75 — 5,413 Total mortgage-backed securities — 148,634 76 — 148,710 Corporate debt securities 54 9,172 376 — 9,602 Collateralized loan and other debt obligations (3) — 32,453 1,002 (2) — 33,455 Asset-backed securities: Automobile loans and leases — 530 — — 530 Home equity loans — 319 — — 319 Other asset-backed securities — 4,777 872 (2) — 5,649 Total asset-backed securities — 5,626 872 — 6,498 Other debt securities — — — — — Total debt securities 14,994 249,297 3,883 — 268,174 Marketable equity securities: Perpetual preferred securities 178 287 — — 465 Other marketable equity securities 563 — — — 563 Total marketable equity securities 741 287 — — 1,028 Total available-for-sale securities 15,735 249,584 3,883 — 269,202 Mortgages held for sale — 18,548 995 — 19,543 Loans — — 443 — 443 Mortgage servicing rights (residential) — — 12,789 — 12,789 Derivative assets: Interest rate contracts 28 18,998 192 — 19,218 Commodity contracts — 1,504 30 — 1,534 Equity contracts 1,545 3,618 1,180 — 6,343 Foreign exchange contracts 21 8,247 18 — 8,286 Credit contracts — 320 184 — 504 Netting — — — (22,612 ) (4) (22,612 ) Total derivative assets 1,594 32,687 1,604 (22,612 ) 13,273 Other assets – excluding nonmarketable equity investments at NAV — 26 3,960 — 3,986 Total assets included in the fair value hierarchy $ 58,099 343,205 24,151 (22,612 ) 402,843 Other assets – nonmarketable equity investments at NAV (5) — Total assets recorded at fair value $ 402,843 Derivative liabilities: Interest rate contracts $ (30 ) (16,146 ) (77 ) — (16,253 ) Commodity contracts — (1,653 ) (13 ) — (1,666 ) Equity contracts (1,089 ) (4,280 ) (1,651 ) — (7,020 ) Foreign exchange contracts (18 ) (9,223 ) (14 ) — (9,255 ) Credit contracts — (389 ) (112 ) — (501 ) Other derivative contracts — — (34 ) — (34 ) Netting — — — 23,093 (4) 23,093 Total derivative liabilities (1,137 ) (31,691 ) (1,901 ) 23,093 (11,636 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (8,906 ) (622 ) — — (9,528 ) Corporate debt securities — (5,180 ) — — (5,180 ) Equity securities (2,073 ) (18 ) — — (2,091 ) Other securities — (45 ) — — (45 ) Total short sale liabilities (10,979 ) (5,865 ) — — (16,844 ) Other liabilities — — (3 ) — (3 ) Total liabilities recorded at fair value $ (12,116 ) (37,556 ) (1,904 ) 23,093 (28,483 ) (1) Net gains (losses) from trading activities recognized in the income statement for the first half of June 30, 2017 and 2016 include $1.1 billion and $1.1 billion in net unrealized gains (losses) on trading securities held at June 30, 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 $998 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 June 30, 2017 Trading assets $ — — — (16 ) 16 — — Available-for-sale securities — — 424 — — (424 ) — Mortgages held for sale — — 5 (19 ) 19 (5 ) — Other assets — — — (1 ) 1 — — Net derivative assets and liabilities (2) — — 80 — — (80 ) — Short sale liabilities — — — — — — — Total transfers $ — — 509 (36 ) 36 (509 ) — Quarter ended June 30, 2016 Trading assets $ — (4 ) 4 — — — — Available-for-sale securities — — 16 — — (16 ) — Mortgages held for sale — — 7 (25 ) 25 (7 ) — Other assets — — — — — — — Net derivative assets and liabilities (2) — — (12 ) (3 ) 3 12 — Short sale liabilities — — — — — — — Total transfers $ — (4 ) 15 (28 ) 28 (11 ) — Six months ended June 30, 2017 Trading assets $ — — 1 (19 ) 19 (1 ) — Available-for-sale securities — — 496 (5 ) 5 (496 ) — Mortgages held for sale — — 6 (61 ) 61 (6 ) — Other assets — — — (1 ) 1 — — Net derivative assets and liabilities (2) — — 83 22 (22 ) (83 ) — Short sale liabilities — — — — — — — Total transfers $ — — 586 (64 ) 64 (586 ) — Six months ended June 30, 2016 Trading assets $ 4 (4 ) 15 (4 ) — (11 ) — Available-for-sale securities — — 16 (80 ) 80 (16 ) — Mortgages held for sale — — 9 (54 ) 54 (9 ) — Other assets — — — — — — — Net derivative assets and liabilities (2) — — 50 (28 ) 28 (50 ) — Short sale liabilities (1 ) — — 1 — — — Total transfers $ 3 (4 ) 90 (165 ) 162 (86 ) — (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 June 30, 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 June 30, 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 June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 3 — — 6 — — 9 — Collateralized loan obligations 398 (7 ) — 12 — — 403 7 Corporate debt securities 37 1 — (12 ) — — 26 (1 ) Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 438 (6 ) — 6 — — 438 6 Other trading assets 26 (1 ) — (2 ) 16 — 39 (1 ) Total trading assets 464 (7 ) — 4 16 — 477 5 (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,360 1 2 618 — (424 ) 1,557 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 89 (3 ) (5 ) (6 ) — — 75 (7 ) Total mortgage-backed securities 90 (3 ) (5 ) (6 ) — — 76 (7 ) Corporate debt securities 391 — 2 (17 ) — — 376 — Collateralized loan and other debt obligations 964 5 4 29 — — 1,002 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 845 — 1 26 — — 872 — Total asset-backed securities 845 — 1 26 — — 872 — Total debt securities 3,650 3 4 650 — (424 ) 3,883 (7 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,650 3 4 650 — (424 ) 3,883 (7 ) Mortgages held for sale 957 (1 ) — 25 19 (5 ) 995 — (6) Loans 505 — — (62 ) — — 443 (4 ) (6) Mortgage servicing rights (residential) (7) 13,208 (847 ) — 428 — — 12,789 (360 ) (6) Net derivative assets and liabilities: Interest rate contracts 218 258 — (361 ) — — 115 12 Commodity contracts 19 — — — — (2 ) 17 2 Equity contracts (299 ) (14 ) — (80 ) — (78 ) (471 ) (109 ) Foreign exchange contracts 3 1 — — — — 4 1 Credit contracts 87 28 — (43 ) — — 72 (17 ) Other derivative contracts (36 ) 3 — (1 ) — — (34 ) 2 Total derivative contracts (8 ) 276 — (485 ) — (80 ) (297 ) (109 ) (8) Other assets 3,740 220 — (1 ) 1 — 3,960 226 (5) Short sale liabilities — — — — — — — — (3) Other liabilities (4 ) 1 — — — — (3 ) — (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 June 30, 2017 . Table 13.5: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended June 30, 2017 (in millions) Purchases Sales Issuances Settlements Net Quarter ended June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 6 — — — 6 Collateralized loan obligations 87 (53 ) — (22 ) 12 Corporate debt securities 3 (15 ) — — (12 ) Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 96 (68 ) — (22 ) 6 Other trading assets — — — (2 ) (2 ) Total trading assets 96 (68 ) — (24 ) 4 Available-for-sale securities: Securities of U.S. states and political subdivisions — — 655 (37 ) 618 Mortgage-backed securities: Residential — — — — — Commercial — — — (6 ) (6 ) Total mortgage-backed securities — — — (6 ) (6 ) Corporate debt securities — — — (17 ) (17 ) Collateralized loan and other debt obligations 57 — — (28 ) 29 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — — 161 (135 ) 26 Total asset-backed securities — — 161 (135 ) 26 Total debt securities 57 — 816 (223 ) 650 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 57 — 816 (223 ) 650 Mortgages held for sale 18 (88 ) 133 (38 ) 25 Loans 2 — 3 (67 ) (62 ) Mortgage servicing rights (residential) (1) — (8 ) 436 — 428 Net derivative assets and liabilities: Interest rate contracts — — — (361 ) (361 ) Commodity contracts — — — — — Equity contracts — (69 ) — (11 ) (80 ) Foreign exchange contracts — — — — — Credit contracts 2 (1 ) — (44 ) (43 ) Other derivative contracts — — — (1 ) (1 ) Total derivative contracts 2 (70 ) — (417 ) (485 ) Other assets — (1 ) — — (1 ) 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 June 30, 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 June 30, 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 June 30, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 8 — — (1 ) — — 7 — Collateralized loan obligations 268 1 — (20 ) — — 249 (4 ) Corporate debt securities 33 (3 ) — 6 — — 36 (2 ) Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 309 (2 ) — (15 ) — — 292 (6 ) Other trading assets 32 1 — — — — 33 3 Total trading assets 341 (1 ) — (15 ) — — 325 (3 ) (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,457 3 1 348 — (16 ) 1,793 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 73 — — 21 — — 94 — Total mortgage-backed securities 74 — — 21 — — 95 — Corporate debt securities 453 3 9 6 — — 471 — Collateralized loan and other debt obligations 813 8 4 126 — — 951 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 1,240 2 (7 ) (118 ) — — 1,117 (4 ) Total asset-backed securities 1,240 2 (7 ) (118 ) — — 1,117 (4 ) Total debt securities 4,037 16 7 383 — (16 ) 4,427 (4 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 4,037 16 7 383 — (16 ) 4,427 (4 ) Mortgages held for sale 1,071 6 — (11 ) 25 (7 ) 1,084 6 (6) Loans 5,221 (3 ) — (186 ) — — 5,032 (4 ) (6) Mortgage servicing rights (residential) (7) 11,333 (1,392 ) — 455 — — 10,396 (824 ) (6) Net derivative assets and liabilities: Interest rate contracts 501 660 — (471 ) — — 690 357 Commodity contracts 11 6 — 1 3 — 21 9 Equity contracts (283 ) 9 — 10 — 12 (252 ) (7 ) Foreign exchange contracts — — — — — — — — Credit contracts — (1 ) — 62 — — 61 (4 ) Other derivative contracts (77 ) (9 ) — (2 ) — — (88 ) (10 ) Total derivative contracts 152 665 — (400 ) 3 12 432 345 (8) Other assets 3,097 (181 ) — 122 — — 3,038 (181 ) (5) Short sale liabilities — — — — — — — — (3) Other liabilities (5 ) — — — — — (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 June 30, 2016 . Table 13.7: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended June 30, 2016 (in millions) Purchases Sales Issuances Settlements Net Quarter ended June 30, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 2 (2 ) — (1 ) (1 ) Collateralized loan obligations 134 (154 ) — — (20 ) Corporate debt securities 10 (4 ) — — 6 Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 146 (160 ) — (1 ) (15 ) Other trading assets — — — — — Total trading assets 146 (160 ) — (1 ) (15 ) Available-for-sale securities: Securities of U.S. states and political subdivisions — (7 ) 459 (104 ) 348 Mortgage-backed securities: Residential — — — — — Commercial 22 — — (1 ) 21 Total mortgage-backed securities 22 — — (1 ) 21 Corporate debt securities 6 — — — 6 Collateralized loan and other debt obligations 188 (4 ) — (58 ) 126 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — (28 ) 38 (128 ) (118 ) Total asset-backed securities — (28 ) 38 (128 ) (118 ) Total debt securities 216 (39 ) 497 (291 ) 383 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 216 (39 ) 497 (291 ) 383 Mortgages held for sale 22 (152 ) 164 (45 ) (11 ) Loans 8 — 84 (278 ) (186 ) Mortgage servicing rights (residential) (1) — (22 ) 477 — 455 Net derivative assets and liabilities: Interest rate contracts — — — (471 ) (471 ) Commodity contracts — — — 1 1 Equity contracts 16 1 — (7 ) 10 Foreign exchange contracts — — — — — Credit contracts — (1 ) — 63 62 Other derivative contracts — — — (2 ) (2 ) Total derivative contracts 16 — — (416 ) (400 ) Other assets 122 — — — 122 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 first half of 2017 , are presented in Table 13.8 . Table 13.8: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Six months ended June 30, 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) Six months ended June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 3 — — 6 — — 9 — Collateralized loan obligations 309 (3 ) — 97 — — 403 7 Corporate debt securities 34 1 — (11 ) 3 (1 ) 26 — Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 346 (2 ) — 92 3 (1 ) 438 7 Other trading assets 28 (3 ) — (2 ) 16 — 39 (1 ) Total trading assets 374 (5 ) — 90 19 (1 ) 477 6 (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,140 1 4 903 5 (496 ) 1,557 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 91 (6 ) (1 ) (9 ) — — 75 (11 ) Total mortgage-backed securities 92 (6 ) (1 ) (9 ) — — 76 (11 ) Corporate debt securities 432 (14 ) 10 (52 ) — — 376 — Collateralized loan and other debt obligations 879 10 45 68 — — 1,002 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 962 — 3 (93 ) — — 872 — Total asset-backed securities 962 — 3 (93 ) — — 872 — Total debt securities 3,505 (9 ) 61 817 5 (496 ) 3,883 (11 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,505 (9 ) 61 817 5 (496 ) 3,883 (11 ) Mortgages held for sale 985 (10 ) — (35 ) 61 (6 ) 995 (10 ) (6) Loans 758 (6 ) — (309 ) — — 443 (8 ) (6) Mortgage servicing rights (residential) (7) 12,959 (1,134 ) — 964 — — 12,789 (186 ) (6) Net derivative assets and liabilities: Interest rate contracts 121 467 — (473 ) — — 115 (7 ) Commodity contracts 23 2 — (6 ) — (2 ) 17 14 Equity contracts (267 ) (58 ) — (43 ) (22 ) (81 ) (471 ) (189 ) Foreign exchange contracts 12 (8 ) — — — — 4 (5 ) Credit contracts 77 35 — (40 ) — — 72 (32 ) Other derivative contracts (47 ) 14 — (1 ) — — (34 ) 14 Total derivative contracts (81 ) 452 — (563 ) (22 ) (83 ) (297 ) (205 ) (8) Other assets 3,259 701 — (1 ) 1 — 3,960 711 (5) Short sale liabilities — — — — — — — — (3) Other liabilities (4 ) 1 — — — — (3 ) — (6) (1) See Table 13.9 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 13.9 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 first half of 2017 . Table 13.9: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Six months ended June 30, 2017 (in millions) Purchases Sales Issuances Settlements Net Six months ended June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 7 (1 ) — — 6 Collateralized loan obligations 286 (129 ) — (60 ) 97 Corporate debt securities 9 (20 ) — — (11 ) Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 302 (150 ) — (60 ) 92 Other trading assets — — — (2 ) (2 ) Total trading assets 302 (150 ) — (62 ) 90 Available-for-sale securities: Securities of U.S. states and political subdivisions — — 1,001 (98 ) 903 Mortgage-backed securities: Residential — — — — — Commercial — — — (9 ) (9 ) Total mortgage-backed securities — — — (9 ) (9 ) Corporate debt securities 4 — — (56 ) (52 ) Collateralized loan and other debt obligations 129 — — (

Preferred Stock

Preferred Stock	6 Months Ended
	Jun. 30, 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 June 30, 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 Series Y 5.625% Non-Cumulative Perpetual Class A Preferred Stock 25,000 27,600 — — ESOP Cumulative Convertible Preferred Stock (2) — 1,982,996 — 1,439,181 Total 12,463,306 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 June 30, 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 — Series Y (1) 5.625% Non-Cumulative Perpetual Class A Preferred Stock 27,600 690 690 — — — — — ESOP Cumulative Convertible Preferred Stock 1,982,996 1,983 1,983 — 1,439,181 1,439 1,439 — Total 12,104,127 $ 27,184 25,785 1,399 11,532,712 $ 25,950 24,551 1,399 (1) Preferred shares qualify as Tier 1 capital. In April 2017, we issued 27.6 million Depositary Shares, each representing a 1/1000th interest in a share of Non-Cumulative Perpetual Class A Preferred Stock, Series Y, for an aggregate public offering price of $690 million . 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) Jun 30, Dec 31, Jun 30, Dec 31, Minimum Maximum ESOP Preferred Stock $1,000 liquidation preference per share 2017 700,102 — $ 700 — 7.00 % 8.00 2016 322,826 358,528 323 358 9.30 10.30 2015 187,436 200,820 187 201 8.90 9.90 2014 237,151 255,413 237 255 8.70 9.70 2013 201,948 222,558 202 223 8.50 9.50 2012 128,634 144,072 129 144 10.00 11.00 2011 129,296 149,301 129 149 9.00 10.00 2010 75,603 90,775 76 91 9.50 10.50 2008 — 17,714 — 18 10.50 11.50 Total ESOP Preferred Stock (1) 1,982,996 1,439,181 $ 1,983 1,439 Unearned ESOP shares (2) $ (2,119 ) (1,565 ) (1) At June 30, 2017 and December 31, 2016 , additional paid-in capital included $136 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	6 Months Ended
	Jun. 30, 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 June 30, Service cost $ 2 — — 1 — — Interest cost 103 6 7 109 6 10 Expected return on plan assets (163 ) — (8 ) (141 ) — (7 ) Amortization of net actuarial loss (gain) 38 4 (3 ) 33 3 (1 ) Amortization of prior service credit — — (2 ) — — — Settlement loss — 4 — 4 — — Net periodic benefit cost (income) $ (20 ) 14 (6 ) 6 9 2 Six months ended June 30, Service cost $ 3 — — 2 — — Interest cost 206 12 14 218 13 20 Expected return on plan assets (326 ) — (15 ) (283 ) — (15 ) Amortization of net actuarial loss (gain) 76 6 (5 ) 66 6 (2 ) Amortization of prior service credit — — (5 ) — — — Settlement loss 1 6 — 4 2 — Net periodic benefit cost (income) $ (40 ) 24 (11 ) 7 21 3

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 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 June 30, Six months ended June 30, (in millions, except per share amounts) 2017 2016 2017 2016 Wells Fargo net income $ 5,810 5,558 $ 11,267 11,020 Less: Preferred stock dividends and other 406 385 807 762 Wells Fargo net income applicable to common stock (numerator) $ 5,404 5,173 $ 10,460 10,258 Earnings per common share Average common shares outstanding (denominator) 4,989.9 5,066.9 4,999.2 5,071.3 Per share $ 1.08 1.02 $ 2.09 2.02 Diluted earnings per common share Average common shares outstanding 4,989.9 5,066.9 4,999.2 5,071.3 Add: Stock options 17.2 19.6 19.3 20.4 Restricted share rights 19.9 21.0 24.7 27.4 Warrants 10.7 10.6 11.6 10.7 Diluted average common shares outstanding (denominator) 5,037.7 5,118.1 5,054.8 5,129.8 Per share $ 1.07 1.01 $ 2.07 2.00 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Options 1.8 2.7 2.1 3.7

Other Comprehensive Income

Other Comprehensive Income	6 Months Ended
	Jun. 30, 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 June 30, Six months ended June 30, 2017 2016 2017 2016 (in millions) Before tax Tax effect Net of tax Before tax Tax effect Net of tax Before tax Tax effect Net of tax Before tax Tax effect Net of tax Investment securities: Net unrealized gains arising during the period $ 1,565 (589 ) 976 1,571 (596 ) 975 1,934 (722 ) 1,212 2,366 (906 ) 1,460 Reclassification of net (gains) losses to net income: Interest income on investment securities (1) 45 (17 ) 28 3 (1 ) 2 52 (20 ) 32 3 (1 ) 2 Net gains on debt securities (120 ) 44 (76 ) (447 ) 168 (279 ) (156 ) 57 (99 ) (691 ) 259 (432 ) Net gains from equity investments (101 ) 35 (66 ) (60 ) 23 (37 ) (217 ) 79 (138 ) (119 ) 45 (74 ) Other noninterest income (1 ) — (1 ) — — — (1 ) — (1 ) (1 ) — (1 ) Subtotal reclassifications to net income (177 ) 62 (115 ) (504 ) 190 (314 ) (322 ) 116 (206 ) (808 ) 303 (505 ) Net change 1,388 (527 ) 861 1,067 (406 ) 661 1,612 (606 ) 1,006 1,558 (603 ) 955 Derivatives and hedging activities: Net unrealized gains arising during the period 376 (142 ) 234 1,057 (399 ) 658 243 (92 ) 151 3,056 (1,152 ) 1,904 Reclassification of net (gains) losses to net income: Interest income on loans (156 ) 59 (97 ) (268 ) 101 (167 ) (361 ) 136 (225 ) (528 ) 199 (329 ) Interest expense on long-term debt 3 (1 ) 2 3 (1 ) 2 6 (2 ) 4 7 (3 ) 4 Subtotal reclassifications to net income (153 ) 58 (95 ) (265 ) 100 (165 ) (355 ) 134 (221 ) (521 ) 196 (325 ) Net change 223 (84 ) 139 792 (299 ) 493 (112 ) 42 (70 ) 2,535 (956 ) 1,579 Defined benefit plans adjustments: Net actuarial and prior service losses arising during the period — — — (19 ) 7 (12 ) (7 ) 3 (4 ) (27 ) 10 (17 ) Reclassification of amounts to net periodic benefit costs (2): Amortization of net actuarial loss 39 (16 ) 23 35 (14 ) 21 77 (30 ) 47 70 (27 ) 43 Settlements and other 2 1 3 4 (1 ) 3 2 1 3 6 (2 ) 4 Subtotal reclassifications to net periodic benefit costs 41 (15 ) 26 39 (15 ) 24 79 (29 ) 50 76 (29 ) 47 Net change 41 (15 ) 26 20 (8 ) 12 72 (26 ) 46 49 (19 ) 30 Foreign currency translation adjustments: Net unrealized gains (losses) arising during the period 31 2 33 (6 ) (1 ) (7 ) 47 3 50 37 7 44 Net change 31 2 33 (6 ) (1 ) (7 ) 47 3 50 37 7 44 Other comprehensive income $ 1,683 (624 ) 1,059 1,873 (714 ) 1,159 1,619 (587 ) 1,032 4,179 (1,571 ) 2,608 Less: Other comprehensive income (loss) from noncontrolling interests, net of tax (9 ) (15 ) 5 (43 ) Wells Fargo other comprehensive income, net of tax $ 1,068 1,174 1,027 2,651 (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 June 30, 2017 Balance, beginning of period $ (967 ) (120 ) (1,923 ) (168 ) (3,178 ) Net unrealized gains arising during the period 976 234 — 33 1,243 Amounts reclassified from accumulated other comprehensive income (115 ) (95 ) 26 — (184 ) Net change 861 139 26 33 1,059 Less: Other comprehensive income (loss) from noncontrolling interests (10 ) — — 1 (9 ) Balance, end of period $ (96 ) 19 (1,897 ) (136 ) (2,110 ) Quarter ended June 30, 2016 Balance, beginning of period $ 2,137 1,706 (1,933 ) (136 ) 1,774 Net unrealized gains (losses) arising during the period 975 658 (12 ) (7 ) 1,614 Amounts reclassified from accumulated other comprehensive income (314 ) (165 ) 24 — (455 ) Net change 661 493 12 (7 ) 1,159 Less: Other comprehensive loss from noncontrolling interests (14 ) — — (1 ) (15 ) Balance, end of period $ 2,812 2,199 (1,921 ) (142 ) 2,948 Six months ended June 30, 2017 Balance, beginning of period $ (1,099 ) 89 (1,943 ) (184 ) (3,137 ) Net unrealized gains (losses) arising during the period 1,212 151 (4 ) 50 1,409 Amounts reclassified from accumulated other comprehensive income (206 ) (221 ) 50 — (377 ) Net change 1,006 (70 ) 46 50 1,032 Less: Other comprehensive income from noncontrolling interests 3 — — 2 5 Balance, end of period $ (96 ) 19 (1,897 ) (136 ) (2,110 ) Six months ended June 30, 2016 Balance, beginning of period $ 1,813 620 (1,951 ) (185 ) 297 Net unrealized gains (losses) arising during the period 1,460 1,904 (17 ) 44 3,391 Amounts reclassified from accumulated other comprehensive income (505 ) (325 ) 47 — (783 ) Net change 955 1,579 30 44 2,608 Less: Other comprehensive income (loss) from noncontrolling interests (44 ) — — 1 (43 ) Balance, end of period $ 2,812 2,199 (1,921 ) (142 ) 2,948

Operating Segments

Operating Segments	6 Months Ended
	Jun. 30, 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 June 30, Net interest income (2) $ 7,548 7,379 4,278 3,919 1,127 932 (470 ) (497 ) 12,483 11,733 Provision (reversal of provision) for credit losses 623 689 (65 ) 385 7 2 (10 ) (2 ) 555 1,074 Noninterest income 4,741 4,825 2,673 3,365 3,055 2,987 (783 ) (748 ) 9,686 10,429 Noninterest expense 7,223 6,648 4,078 4,036 3,075 2,976 (835 ) (794 ) 13,541 12,866 Income (loss) before income tax expense (benefit) 4,443 4,867 2,938 2,863 1,100 941 (408 ) (449 ) 8,073 8,222 Income tax expense (benefit) 1,404 1,667 559 795 417 358 (155 ) (171 ) 2,225 2,649 Net income (loss) before noncontrolling interests 3,039 3,200 2,379 2,068 683 583 (253 ) (278 ) 5,848 5,573 Less: Net income (loss) from noncontrolling interests 46 21 (9 ) (5 ) 1 (1 ) — — 38 15 Net income (loss) (3) $ 2,993 3,179 2,388 2,073 682 584 (253 ) (278 ) 5,810 5,558 Average loans $ 477.2 485.7 464.9 451.4 71.7 66.7 (56.9 ) (53.0 ) 956.9 950.8 Average assets 983.5 967.6 817.3 772.6 213.1 205.3 (86.8 ) (83.4 ) 1,927.1 1,862.1 Average deposits 727.2 703.7 463.0 425.8 188.2 182.5 (77.2 ) (75.3 ) 1,301.2 1,236.7 Six months ended June 30, Net interest income (2) $ 15,175 14,847 8,426 7,667 2,201 1,875 (1,019 ) (989 ) 24,783 23,400 Provision (reversal of provision) for credit losses 1,269 1,409 (108 ) 748 3 (12 ) (4 ) 15 1,160 2,160 Noninterest income 9,207 9,971 5,563 6,575 6,174 5,898 (1,556 ) (1,487 ) 19,388 20,957 Noninterest expense 14,444 13,484 8,303 8,004 6,281 6,018 (1,695 ) (1,612 ) 27,333 25,894 Income (loss) before income tax expense (benefit) 8,669 9,925 5,794 5,490 2,091 1,767 (876 ) (879 ) 15,678 16,303 Income tax expense (benefit) 2,531 3,364 1,305 1,514 779 672 (333 ) (334 ) 4,282 5,216 Net income (loss) before noncontrolling interests 6,138 6,561 4,489 3,976 1,312 1,095 (543 ) (545 ) 11,396 11,087 Less: Net income (loss) from noncontrolling interests 136 86 (14 ) (18 ) 7 (1 ) — — 129 67 Net income (loss) (3) $ 6,002 6,475 4,503 3,994 1,305 1,096 (543 ) (545 ) 11,267 11,020 Average loans $ 479.9 485.0 465.6 440.6 71.2 65.4 (56.5 ) (52.0 ) 960.2 939.0 Average assets 987.0 957.5 812.6 760.6 217.5 206.7 (88.1 ) (83.8 ) 1,929.0 1,841.0 Average deposits 722.2 693.3 464.5 426.9 191.9 183.5 (78.4 ) (75.7 ) 1,300.2 1,228.0 (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	6 Months Ended
	Jun. 30, 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 June 30, 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. June 30, 2017 December 31, 2016 June 30, 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 $ 152,742 152,742 148,785 148,785 139,581 139,581 132,225 132,225 Tier 1 176,134 176,134 171,364 171,364 139,581 139,581 132,225 132,225 Total 208,535 218,399 204,425 214,877 152,850 162,320 145,665 155,281 Assets: Risk-weighted $ 1,232,977 1,287,327 1,274,589 1,336,198 1,114,978 1,188,024 1,143,681 1,222,876 Adjusted average (1) 1,897,370 1,897,370 1,914,802 1,914,802 1,703,737 1,703,737 1,714,524 1,714,524 Regulatory capital ratios: Common equity tier 1 capital 12.39 % 11.87 * 11.67 11.13 * 12.52 11.75 * 11.56 10.81 * Tier 1 capital 14.29 13.68 * 13.44 12.82 * 12.52 11.75 * 11.56 10.81 * Total capital 16.91 * 16.97 16.04 * 16.08 13.71 13.66 * 12.74 12.70 * Tier 1 leverage (1) 9.28 9.28 8.95 8.95 8.19 8.19 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 June 30, 2017 and December 31, 2016 . Table 19.2: Minimum Required Regulatory Capital Ratios – Transition Requirements (1) Wells Fargo & Company Wells Fargo Bank, N.A. June 30, 2017 December 31, 2016 June 30, 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 June 30, 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 June 30, 2017 .

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 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). 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 significantly different 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)); • income taxes; and • liabilities for contingent litigation losses (Note 11 (Legal Actions)). 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 June 30, 2017 and June 30, 2016 .
Subsequent Events	Subsequent Events We have evaluated the effects of events that have occurred subsequent to June 30, 2017 , and there have been no material events that would require recognition in our second 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. Subject to completion of our assessment, we are not expecting this Update to have a material impact on our financial statements.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 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 Six months ended June 30, (in millions) 2017 2016 Trading assets retained from securitization of MHFS $ 34,317 23,403 Transfers from loans to MHFS 3,215 3,309 Transfers from available-for-sale to held-to-maturity securities 45,408 —

Federal Funds Sold, Securitie31

Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 2017 , and December 31, 2016 , were held at Federal Reserve Banks. Table 3.1: Fed Funds Sold and Other Short-Term Investments (in millions) Jun 30, Dec 31, Federal funds sold and securities purchased under resale agreements $ 67,687 58,215 Interest-earning deposits 195,700 200,671 Other short-term investments 1,319 7,152 Total $ 264,706 266,038

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ 17,950 11 (65 ) 17,896 Securities of U.S. states and political subdivisions 52,237 751 (975 ) 52,013 Mortgage-backed securities: Federal agencies 136,336 1,009 (1,407 ) 135,938 Residential 6,829 532 (2 ) 7,359 Commercial 5,347 82 (16 ) 5,413 Total mortgage-backed securities 148,512 1,623 (1,425 ) 148,710 Corporate debt securities 9,261 424 (83 ) 9,602 Collateralized loan and other debt obligations (1) 33,168 298 (11 ) 33,455 Other (2) 6,348 164 (14 ) 6,498 Total debt securities 267,476 3,271 (2,573 ) 268,174 Marketable equity securities: Perpetual preferred securities 446 23 (4 ) 465 Other marketable equity securities 168 398 (3 ) 563 Total marketable equity securities 614 421 (7 ) 1,028 Total available-for-sale securities 268,090 3,692 (2,580 ) 269,202 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies 44,704 666 (35 ) 45,335 Securities of U.S. states and political subdivisions 6,325 60 (55 ) 6,330 Federal agency and other mortgage-backed securities (3) 87,525 162 (806 ) 86,881 Collateralized loan obligations 993 5 — 998 Other (2) 845 1 — 846 Total held-to-maturity securities 140,392 894 (896 ) 140,390 Total $ 408,482 4,586 (3,476 ) 409,592 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 $923 million and $998 million , respectively, at June 30, 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 $345 million each at June 30, 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 $500 million and $501 million , respectively at June 30, 2017 , and $1.1 billion each at December 31, 2016 . (3) Predominantly consists of federal agency mortgage-backed securities at both June 30, 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 June 30, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (65 ) 11,486 — — (65 ) 11,486 Securities of U.S. states and political subdivisions (38 ) 8,048 (937 ) 19,964 (975 ) 28,012 Mortgage-backed securities: Federal agencies (1,271 ) 78,114 (136 ) 5,900 (1,407 ) 84,014 Residential (1 ) 90 (1 ) 78 (2 ) 168 Commercial (2 ) 369 (14 ) 670 (16 ) 1,039 Total mortgage-backed securities (1,274 ) 78,573 (151 ) 6,648 (1,425 ) 85,221 Corporate debt securities (9 ) 655 (74 ) 665 (83 ) 1,320 Collateralized loan and other debt obligations (1 ) 3,327 (10 ) 682 (11 ) 4,009 Other (3 ) 443 (11 ) 978 (14 ) 1,421 Total debt securities (1,390 ) 102,532 (1,183 ) 28,937 (2,573 ) 131,469 Marketable equity securities: Perpetual preferred securities (1 ) 32 (3 ) 50 (4 ) 82 Other marketable equity securities (3 ) 10 — — (3 ) 10 Total marketable equity securities (4 ) 42 (3 ) 50 (7 ) 92 Total available-for-sale securities (1,394 ) 102,574 (1,186 ) 28,987 (2,580 ) 131,561 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (35 ) 3,347 — — (35 ) 3,347 Securities of U.S. states and political subdivisions (55 ) 3,624 — — (55 ) 3,624 Federal agency and other mortgage-backed securities (806 ) 63,110 — — (806 ) 63,110 Collateralized loan obligations — — — — — — Other — — — — — — Total held-to-maturity securities (896 ) 70,081 — — (896 ) 70,081 Total $ (2,290 ) 172,655 (1,186 ) 28,987 (3,476 ) 201,642 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 $32 million and $6.6 billion , respectively, at June 30, 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 June 30, 2017 Available-for-sale securities: Securities of U.S. Treasury and federal agencies $ (65 ) 11,486 — — Securities of U.S. states and political subdivisions (932 ) 27,640 (43 ) 372 Mortgage-backed securities: Federal agencies (1,407 ) 84,014 — — Residential (1 ) 54 (1 ) 114 Commercial (3 ) 728 (13 ) 311 Total mortgage-backed securities (1,411 ) 84,796 (14 ) 425 Corporate debt securities (14 ) 630 (69 ) 690 Collateralized loan and other debt obligations (11 ) 4,009 — — Other (10 ) 997 (4 ) 424 Total debt securities (2,443 ) 129,558 (130 ) 1,911 Perpetual preferred securities (3 ) 63 (1 ) 19 Total available-for-sale securities (2,446 ) 129,621 (131 ) 1,930 Held-to-maturity securities: Securities of U.S. Treasury and federal agencies (35 ) 3,347 — — Securities of U.S. states and political subdivisions (55 ) 3,624 — — Federal agency and other mortgage-backed securities (805 ) 63,075 (1 ) 35 Collateralized loan obligations — — — — Other — — — — Total held-to-maturity securities (895 ) 70,046 (1 ) 35 Total $ (3,341 ) 199,667 (132 ) 1,965 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 June 30, 2017 Available-for-sale debt securities (1): Fair value: Securities of U.S. Treasury and federal agencies $ 17,896 1.25 % $ 10,987 1.04 % $ 5,883 1.55 % $ 1,026 1.80 % $ — — % Securities of U.S. states and political subdivisions 52,013 5.77 1,251 2.25 10,536 2.86 2,511 4.59 37,715 6.78 Mortgage-backed securities: Federal agencies 135,938 3.18 1 4.93 127 3.01 5,845 2.93 129,965 3.19 Residential 7,359 3.90 — — 25 5.55 19 3.76 7,315 3.89 Commercial 5,413 4.18 — — — — 45 2.90 5,368 4.19 Total mortgage-backed securities 148,710 3.25 1 4.93 152 3.42 5,909 2.93 142,648 3.27 Corporate debt securities 9,602 4.95 1,050 4.13 2,945 5.69 4,638 4.62 969 5.23 Collateralized loan and other debt obligations 33,455 2.89 — — 146 2.10 17,739 2.82 15,570 2.99 Other 6,498 2.32 40 3.24 779 2.54 1,632 1.91 4,047 2.43 Total available-for-sale debt securities at fair value $ 268,174 3.60 % $ 13,329 1.40 % $ 20,441 2.88 % $ 33,455 3.15 % $ 200,949 3.90 % 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 June 30, 2017 Held-to-maturity securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,704 2.12 % $ — — % $ 32,317 2.04 % $ 12,387 2.32 % $ — — % Securities of U.S. states and political subdivisions 6,325 6.04 — — 24 8.20 553 6.61 5,748 5.98 Federal agency and other mortgage-backed securities 87,525 3.11 — — — — — — 87,525 3.11 Collateralized loan obligations 993 2.72 — — — — 993 2.72 — — Other 845 2.03 — — 845 2.03 — — — — Total held-to-maturity debt securities at amortized cost $ 140,392 2.92 % $ — — % $ 33,186 2.04 % $ 13,933 2.52 % $ 93,273 3.29 % 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 June 30, 2017 Held-to-maturity securities: Fair value: Securities of U.S. Treasury and federal agencies $ 45,335 — 32,774 12,561 — Securities of U.S. states and political subdivisions 6,330 — 24 559 5,747 Federal agency and other mortgage-backed securities 86,881 — — — 86,881 Collateralized loan obligations 998 — — 998 — Other 846 — 846 — — Total held-to-maturity debt securities at fair value $ 140,390 — 33,644 14,118 92,628 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Gross realized gains $ 320 564 $ 561 949 Gross realized losses (48 ) (31 ) (84 ) (44 ) OTTI write-downs (51 ) (26 ) (104 ) (95 ) Net realized gains from available-for-sale securities 221 507 373 810 Net realized gains from nonmarketable equity investments 87 129 374 314 Net realized gains from debt securities and equity investments $ 308 636 $ 747 1,124
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 the first half of 2017 and 2016 . Table 4.8: OTTI Write-downs Quarter ended June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 OTTI write-downs included in earnings Debt securities: Securities of U.S. states and political subdivisions $ — 6 $ 8 10 Mortgage-backed securities: Residential 3 12 6 24 Commercial 41 — 66 1 Corporate debt securities 4 5 20 50 Other debt securities — 3 — 6 Total debt securities 48 26 100 91 Equity securities: Marketable equity securities: Other marketable equity securities 3 — 4 4 Total marketable equity securities 3 — 4 4 Total investment securities (1) 51 26 104 95 Nonmarketable equity investments (1) 22 104 98 233 Total OTTI write-downs included in earnings (1) $ 73 130 $ 202 328 (1) The quarters ended June 30, 2017 and 2016 , include $19 million and $29 million , respectively, in OTTI write-downs of oil and gas investments, of which $7 million and $5 million , respectively, related to investment securities and $12 million and $24 million , respectively, related to nonmarketable equity investments. Oil and gas related OTTI for the first half of 2017 and 2016 , totaled $58 million and $153 million , respectively, of which $22 million and $51 million , respectively, related to investment securities and $36 million and $102 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 OTTI on debt securities Recorded as part of gross realized losses: Credit-related OTTI $ 47 20 $ 99 81 Intent-to-sell OTTI 1 6 1 10 Total recorded as part of gross realized losses 48 26 100 91 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 ) (5 ) — 5 Commercial mortgage-backed securities (40 ) (1 ) (47 ) 2 Corporate debt securities 1 (9 ) 1 (13 ) Other debt securities — — — 2 Total changes to OCI for non-credit-related OTTI (42 ) (15 ) (51 ) (4 ) Total OTTI losses recorded on debt securities $ 6 11 $ 49 87 (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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Credit loss recognized, beginning of period $ 1,086 1,145 $ 1,043 1,092 Additions: For securities with initial credit impairments 2 — 8 38 For securities with previous credit impairments 45 20 91 43 Total additions 47 20 99 81 Reductions: For securities sold, matured, or intended/required to be sold (11 ) (83 ) (18 ) (89 ) For recoveries of previous credit impairments (1) (2 ) (2 ) (4 ) (4 ) Total reductions (13 ) (85 ) (22 ) (93 ) Credit loss recognized, end of period $ 1,120 1,080 $ 1,120 1,080 (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)	6 Months Ended
	Jun. 30, 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 $3.9 billion and $4.4 billion at June 30, 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) Jun 30, Dec 31, Commercial: Commercial and industrial $ 331,113 330,840 Real estate mortgage 130,277 132,491 Real estate construction 25,337 23,916 Lease financing 19,174 19,289 Total commercial 505,901 506,536 Consumer: Real estate 1-4 family first mortgage 276,566 275,579 Real estate 1-4 family junior lien mortgage 42,747 46,237 Credit card 35,305 36,700 Automobile 57,958 62,286 Other revolving credit and installment 38,946 40,266 Total consumer 451,522 461,068 Total loans $ 957,423 967,604 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) Jun 30, Dec 31, Commercial foreign loans: Commercial and industrial $ 57,825 55,396 Real estate mortgage 8,359 8,541 Real estate construction 585 375 Lease financing 1,092 972 Total commercial foreign loans $ 67,861 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 June 30, Purchases $ 810 — 810 2,607 — 2,607 Sales (1,052 ) (84 ) (1,136 ) (385 ) (407 ) (792 ) Transfers to MHFS/LHFS (179 ) (1 ) (180 ) (69 ) (1 ) (70 ) Six months ended June 30, Purchases $ 1,969 2 1,971 27,253 — 27,253 Sales (1,339 ) (146 ) (1,485 ) (608 ) (679 ) (1,287 ) Transfers to MHFS/LHFS (658 ) (1 ) (659 ) (101 ) (4 ) (105 ) (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) Jun 30, Dec 31, Commercial: Commercial and industrial $ 319,058 319,662 Real estate mortgage 7,601 7,833 Real estate construction 16,728 18,840 Lease financing 11 16 Total commercial 343,398 346,351 Consumer: Real estate 1-4 family first mortgage 35,685 33,498 Real estate 1-4 family junior lien mortgage 40,044 41,431 Credit card 106,329 101,895 Other revolving credit and installment 27,541 28,349 Total consumer 209,599 205,173 Total unfunded credit commitments $ 552,997 551,524
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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Balance, beginning of period $ 12,287 12,668 12,540 12,512 Provision for credit losses 555 1,074 1,160 2,160 Interest income on certain impaired loans (1) (46 ) (51 ) (94 ) (99 ) Loan charge-offs: Commercial: Commercial and industrial (161 ) (437 ) (414 ) (786 ) Real estate mortgage (8 ) (3 ) (13 ) (6 ) Real estate construction — (1 ) — (1 ) Lease financing (13 ) (17 ) (20 ) (21 ) Total commercial (182 ) (458 ) (447 ) (814 ) Consumer: Real estate 1-4 family first mortgage (55 ) (123 ) (124 ) (260 ) Real estate 1-4 family junior lien mortgage (62 ) (133 ) (155 ) (266 ) Credit card (379 ) (320 ) (746 ) (634 ) Automobile (212 ) (176 ) (467 ) (387 ) Other revolving credit and installment (185 ) (163 ) (374 ) (338 ) Total consumer (893 ) (915 ) (1,866 ) (1,885 ) Total loan charge-offs (1,075 ) (1,373 ) (2,313 ) (2,699 ) Loan recoveries: Commercial: Commercial and industrial 83 69 165 145 Real estate mortgage 14 23 44 55 Real estate construction 4 4 12 12 Lease financing 6 5 8 8 Total commercial 107 101 229 220 Consumer: Real estate 1-4 family first mortgage 71 109 133 198 Real estate 1-4 family junior lien mortgage 66 71 136 130 Credit card 59 50 117 102 Automobile 86 86 174 170 Other revolving credit and installment 31 32 64 69 Total consumer 313 348 624 669 Total loan recoveries 420 449 853 889 Net loan charge-offs (655 ) (924 ) (1,460 ) (1,810 ) Other 5 (18 ) — (14 ) Balance, end of period $ 12,146 12,749 12,146 12,749 Components: Allowance for loan losses $ 11,073 11,664 11,073 11,664 Allowance for unfunded credit commitments 1,073 1,085 1,073 1,085 Allowance for credit losses $ 12,146 12,749 12,146 12,749 Net loan charge-offs (annualized) as a percentage of average total loans 0.27 % 0.39 0.31 0.39 Allowance for loan losses as a percentage of total loans 1.16 1.22 1.16 1.22 Allowance for credit losses as a percentage of total loans 1.27 1.33 1.27 1.33 (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 June 30, Balance, beginning of period $ 7,142 5,145 12,287 7,348 5,320 12,668 Provision (reversal of provision) for credit losses (97 ) 652 555 478 596 1,074 Interest income on certain impaired loans (14 ) (32 ) (46 ) (10 ) (41 ) (51 ) Loan charge-offs (182 ) (893 ) (1,075 ) (458 ) (915 ) (1,373 ) Loan recoveries 107 313 420 101 348 449 Net loan charge-offs (75 ) (580 ) (655 ) (357 ) (567 ) (924 ) Other 5 — 5 (18 ) — (18 ) Balance, end of period $ 6,961 5,185 12,146 7,441 5,308 12,749 Six months ended June 30, Balance, beginning of period $ 7,394 5,146 12,540 6,872 5,640 12,512 Provision (reversal of provision) for credit losses (186 ) 1,346 1,160 1,192 968 2,160 Interest income on certain impaired loans (29 ) (65 ) (94 ) (15 ) (84 ) (99 ) Loan charge-offs (447 ) (1,866 ) (2,313 ) (814 ) (1,885 ) (2,699 ) Loan recoveries 229 624 853 220 669 889 Net loan charge-offs (218 ) (1,242 ) (1,460 ) (594 ) (1,216 ) (1,810 ) Other — — — (14 ) — (14 ) Balance, end of period $ 6,961 5,185 12,146 7,441 5,308 12,749
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 June 30, 2017 Collectively evaluated (1) $ 6,131 3,844 9,975 500,942 421,646 922,588 Individually evaluated (2) 830 1,341 2,171 4,696 15,866 20,562 PCI (3) — — — 263 14,010 14,273 Total $ 6,961 5,185 12,146 505,901 451,522 957,423 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 $19.0 billion in criticized commercial and industrial loans and $5.2 billion in criticized commercial real estate (CRE) loans at June 30, 2017 , $2.6 billion and $664 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 June 30, 2017 By risk category: Pass $ 311,963 125,283 25,013 17,970 480,229 Criticized 19,019 4,875 311 1,204 25,409 Total commercial loans (excluding PCI) 330,982 130,158 25,324 19,174 505,638 Total commercial PCI loans (carrying value) 131 119 13 — 263 Total commercial loans $ 331,113 130,277 25,337 19,174 505,901 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 June 30, 2017 By delinquency status: Current-29 days past due (DPD) and still accruing $ 327,614 129,360 25,148 18,970 501,092 30-89 DPD and still accruing 694 166 132 115 1,107 90+ DPD and still accruing 42 2 10 — 54 Nonaccrual loans 2,632 630 34 89 3,385 Total commercial loans (excluding PCI) 330,982 130,158 25,324 19,174 505,638 Total commercial PCI loans (carrying value) 131 119 13 — 263 Total commercial loans $ 331,113 130,277 25,337 19,174 505,901 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 June 30, 2017 By delinquency status: Current-29 DPD $ 244,862 41,866 34,455 56,470 38,591 416,244 30-59 DPD 1,607 273 254 1,085 130 3,349 60-89 DPD 637 151 185 298 88 1,359 90-119 DPD 269 81 142 100 79 671 120-179 DPD 245 90 268 5 30 638 180+ DPD 1,378 255 1 — 28 1,662 Government insured/guaranteed loans (1) 13,589 — — — — 13,589 Total consumer loans (excluding PCI) 262,587 42,716 35,305 57,958 38,946 437,512 Total consumer PCI loans (carrying value) 13,979 31 — — — 14,010 Total consumer loans $ 276,566 42,747 35,305 57,958 38,946 451,522 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 $8.5 billion at June 30, 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 June 30, 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 $8.2 billion at June 30, 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 June 30, 2017 By FICO: < 600 $ 5,767 1,949 3,282 9,716 892 21,606 600-639 3,917 1,422 2,932 6,468 945 15,684 640-679 7,322 2,689 5,399 8,741 2,068 26,219 680-719 15,579 5,269 7,195 9,676 3,743 41,462 720-759 28,480 6,756 7,544 8,282 5,307 56,369 760-799 54,249 7,792 6,018 6,739 6,481 81,279 800+ 127,929 16,015 2,889 8,098 8,744 163,675 No FICO available 5,755 824 46 238 2,608 9,471 FICO not required — — — — 8,158 8,158 Government insured/guaranteed loans (2) 13,589 — — — — 13,589 Total consumer loans (excluding PCI) 262,587 42,716 35,305 57,958 38,946 437,512 Total consumer PCI loans (carrying value) 13,979 31 — — — 14,010 Total consumer loans $ 276,566 42,747 35,305 57,958 38,946 451,522 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 June 30, 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 June 30, 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% $ 124,277 15,923 140,200 121,430 16,464 137,894 60.01-80% 104,027 13,974 118,001 101,726 15,262 116,988 80.01-100% 16,229 7,827 24,056 15,795 8,765 24,560 100.01-120% (1) 2,334 3,158 5,492 2,644 3,589 6,233 > 120% (1) 981 1,359 2,340 1,066 1,613 2,679 No LTV/CLTV available 1,150 475 1,625 1,295 508 1,803 Government insured/guaranteed loans (2) 13,589 — 13,589 15,605 — 15,605 Total consumer loans (excluding PCI) 262,587 42,716 305,303 259,561 46,201 305,762 Total consumer PCI loans (carrying value) 13,979 31 14,010 16,018 36 16,054 Total consumer loans $ 276,566 42,747 319,313 275,579 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) Jun 30, Dec 31, Commercial: Commercial and industrial $ 2,632 3,216 Real estate mortgage 630 685 Real estate construction 34 43 Lease financing 89 115 Total commercial 3,385 4,059 Consumer: Real estate 1-4 family first mortgage (1) 4,413 4,962 Real estate 1-4 family junior lien mortgage 1,095 1,206 Automobile 104 106 Other revolving credit and installment 59 51 Total consumer 5,671 6,325 Total nonaccrual loans (excluding PCI) $ 9,056 10,384 (1) Includes MHFS of $140 million and $149 million at June 30, 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) Jun 30, 2017 Dec 31, 2016 Total (excluding PCI): $ 9,716 11,858 Less: FHA insured/guaranteed by the VA (1)(2) 8,873 10,883 Less: Student loans guaranteed under the Federal Family Education Loan Program (FFELP) (3) — 3 Total, not government insured/guaranteed $ 843 972 By segment and class, not government insured/guaranteed: Commercial: Commercial and industrial $ 42 28 Real estate mortgage 2 36 Real estate construction 10 — Total commercial 54 64 Consumer: Real estate 1-4 family first mortgage (2) 145 175 Real estate 1-4 family junior lien mortgage (2) 44 56 Credit card 411 452 Automobile 91 112 Other revolving credit and installment 98 113 Total consumer 789 908 Total, not government insured/guaranteed $ 843 972 (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 $215 million at June 30, 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 June 30, 2017 Commercial: Commercial and industrial $ 4,401 3,205 2,901 558 Real estate mortgage 1,654 1,337 1,325 238 Real estate construction 105 62 62 11 Lease financing 126 92 92 23 Total commercial 6,286 4,696 4,380 830 Consumer: Real estate 1-4 family first mortgage 15,256 13,299 8,677 905 Real estate 1-4 family junior lien mortgage 2,273 2,043 1,557 295 Credit card 317 316 316 113 Automobile 152 85 31 4 Other revolving credit and installment 129 123 113 24 Total consumer (2) 18,127 15,866 10,694 1,341 Total impaired loans (excluding PCI) $ 24,413 20,562 15,074 2,171 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 $1.4 billion and $1.5 billion at June 30, 2017 and December 31, 2016 , respectively, 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 June 30, Six months ended June 30, 2017 2016 2017 2016 (in millions) Average recorded investment Recognized interest income Average recorded investment Recognized interest income Average recorded investment Recognized interest income Average recorded investment Recognized interest income Commercial: Commercial and industrial $ 3,390 36 3,803 21 3,457 69 3,146 40 Real estate mortgage 1,371 24 1,695 34 1,397 51 1,730 66 Real estate construction 66 2 116 3 75 3 122 5 Lease financing 98 — 93 — 110 — 79 — Total commercial 4,925 62 5,707 58 5,039 123 5,077 111 Consumer: Real estate 1-4 family first mortgage 13,602 185 16,278 211 13,866 375 16,595 432 Real estate 1-4 family junior lien mortgage 2,075 31 2,325 33 2,103 62 2,354 67 Credit card 313 9 293 8 308 17 295 17 Automobile 83 3 94 3 83 6 98 6 Other revolving credit and installment 114 2 84 2 110 4 80 3 Total consumer 16,187 230 19,074 257 16,470 464 19,422 525 Total impaired loans (excluding PCI) $ 21,112 292 24,781 315 21,509 587 24,499 636 Interest income: Cash basis of accounting $ 77 92 155 187 Other (1) 215 223 432 449 Total interest income $ 292 315 587 636 (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 June 30, 2017 Commercial: Commercial and industrial $ 17 13 914 944 29 0.88 % $ 13 Real estate mortgage 4 25 137 166 13 1.36 25 Real estate construction — 1 20 21 — 0.61 1 Lease financing — — 11 11 — — — Total commercial 21 39 1,082 1,142 42 1.19 39 Consumer: Real estate 1-4 family first mortgage 74 45 234 353 3 2.55 83 Real estate 1-4 family junior lien mortgage 7 26 21 54 3 2.88 30 Credit card — 57 — 57 — 12.48 57 Automobile — 4 20 24 11 5.90 4 Other revolving credit and installment — 16 1 17 1 7.27 15 Trial modifications (6) — — (27 ) (27 ) — — — Total consumer 81 148 249 478 18 6.07 189 Total $ 102 187 1,331 1,620 60 5.24 % $ 228 Quarter ended June 30, 2016 Commercial: Commercial and industrial $ — 35 697 732 137 2.29 % $ 35 Real estate mortgage — 29 135 164 — 1.30 28 Real estate construction — 14 18 32 — 1.05 14 Lease financing — — — — — — — Total commercial — 78 850 928 137 1.70 77 Consumer: Real estate 1-4 family first mortgage 92 78 314 484 12 2.63 138 Real estate 1-4 family junior lien mortgage 6 27 33 66 11 3.11 33 Credit card — 41 — 41 — 11.98 41 Automobile 1 3 14 18 8 6.40 3 Other revolving credit and installment — 8 2 10 — 6.99 8 Trial modifications (6) — — 17 17 — — — Total consumer 99 157 380 636 31 4.64 223 Total $ 99 235 1,230 1,564 168 3.88 % $ 300 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) Six months ended June 30, 2017 Commercial: Commercial and industrial $ 17 19 1,842 1,878 94 0.86 % $ 19 Real estate mortgage 4 39 318 361 13 1.23 39 Real estate construction — 1 23 24 — 0.69 1 Lease financing — — 14 14 — — — Total commercial 21 59 2,197 2,277 107 1.10 59 Consumer: Real estate 1-4 family first mortgage 148 117 525 790 12 2.58 186 Real estate 1-4 family junior lien mortgage 20 47 44 111 9 2.91 54 Credit card — 114 — 114 — 12.35 114 Automobile 1 7 32 40 18 6.14 7 Other revolving credit and installment — 27 4 31 1 7.28 26 Trial modifications (6) — — (44 ) (44 ) — — — Total consumer 169 312 561 1,042 40 5.89 387 Total $ 190 371 2,758 3,319 147 5.25 % $ 446 Six months ended June 30, 2016 Commercial: Commercial and industrial $ 42 113 1,329 1,484 243 2.02 % $ 113 Real estate mortgage — 53 294 347 — 1.22 52 Real estate construction — 14 62 76 — 1.05 14 Lease financing — — 4 4 — — — Total commercial 42 180 1,689 1,911 243 1.71 179 Consumer: Real estate 1-4 family first mortgage 188 143 764 1,095 25 2.72 257 Real estate 1-4 family junior lien mortgage 12 56 60 128 21 3.01 67 Credit card — 85 — 85 — 11.96 85 Automobile 1 7 29 37 16 6.47 7 Other revolving credit and installment — 16 5 21 1 6.53 16 Trial modifications (6) — — 32 32 — — — Total consumer 201 307 890 1,398 63 4.79 432 Total $ 243 487 2,579 3,309 306 3.88 % $ 611 (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 $602 million and $301 million for the quarters ended June 30, 2017 and 2016 , and $1.3 billion and $649 million , for the first half of 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 $10 million and $19 million for the quarters ended June 30, 2017 and 2016, and $19 million and $38 million for the first half of 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Commercial: Commercial and industrial $ 30 20 92 45 Real estate mortgage 10 31 31 51 Real estate construction — 1 — 3 Total commercial 40 52 123 99 Consumer: Real estate 1-4 family first mortgage 26 30 51 61 Real estate 1-4 family junior lien mortgage 5 4 9 9 Credit card 17 13 32 26 Automobile 4 3 7 6 Other revolving credit and installment 1 1 2 2 Total consumer 53 51 101 104 Total $ 93 103 224 203
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) Jun 30, Dec 31, Commercial: Commercial and industrial $ 131 237 Real estate mortgage 119 383 Real estate construction 13 57 Total commercial 263 677 Consumer: Real estate 1-4 family first mortgage 13,979 16,018 Real estate 1-4 family junior lien mortgage 31 36 Total consumer 14,010 16,054 Total PCI loans (carrying value) $ 14,273 16,731 Total PCI loans (unpaid principal balance) $ 20,928 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 the first half of 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. Second quarter 2017 reflects a $309 million gain on the sale of $569 million Pick-a-Pay PCI loans. Table 5.20: Change in Accretable Yield (in millions) Quarter ended June 30, 2017 Six months 2009-2016 Balance, beginning of period $ 10,315 11,216 10,447 Change in accretable yield due to acquisitions — 2 159 Accretion into interest income (1) (374 ) (731 ) (15,577 ) Accretion into noninterest income due to sales (2) (309 ) (334 ) (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) (263 ) (1,190 ) 5,699 Balance, end of period $ 9,369 9,369 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 June 30, 2017 By risk category: Pass $ 7 84 4 95 Criticized 124 35 9 168 Total commercial PCI loans $ 131 119 13 263 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 June 30, 2017 By delinquency status: Current-29 DPD and still accruing $ 129 108 13 250 30-89 DPD and still accruing 2 — — 2 90+ DPD and still accruing — 11 — 11 Total commercial PCI loans $ 131 119 13 263 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 June 30, 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 $ 14,524 158 14,682 16,095 171 16,266 30-59 DPD and still accruing 1,229 5 1,234 1,488 7 1,495 60-89 DPD and still accruing 574 3 577 668 2 670 90-119 DPD and still accruing 224 1 225 233 2 235 120-179 DPD and still accruing 155 2 157 238 2 240 180+ DPD and still accruing 1,606 6 1,612 2,081 8 2,089 Total consumer PCI loans (adjusted unpaid principal balance) $ 18,312 175 18,487 20,803 192 20,995 Total consumer PCI loans (carrying value) $ 13,979 31 14,010 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 June 30, 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 $ 4,450 42 4,492 4,292 46 4,338 600-639 2,342 22 2,364 3,001 26 3,027 640-679 2,599 30 2,629 3,972 35 4,007 680-719 2,438 32 2,470 3,170 37 3,207 720-759 1,845 25 1,870 1,767 24 1,791 760-799 930 12 942 962 15 977 800+ 446 6 452 254 4 258 No FICO available 3,262 6 3,268 3,385 5 3,390 Total consumer PCI loans (adjusted unpaid principal balance) $ 18,312 175 18,487 20,803 192 20,995 Total consumer PCI loans (carrying value) $ 13,979 31 14,010 16,018 36 16,054 (1) June 30, 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 June 30, 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% $ 7,316 40 7,356 7,513 38 7,551 60.01-80% 7,604 70 7,674 9,000 76 9,076 80.01-100% 2,750 45 2,795 3,458 54 3,512 100.01-120% (1) 517 14 531 669 18 687 > 120% (1) 124 5 129 161 5 166 No LTV/CLTV available 1 1 2 2 1 3 Total consumer PCI loans (adjusted unpaid principal balance) $ 18,312 175 18,487 20,803 192 20,995 Total consumer PCI loans (carrying value) $ 13,979 31 14,010 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)	6 Months Ended
	Jun. 30, 2017
Other Assets [Abstract]
Components of Other Assets	Table 6.1 presents the components of other assets. Table 6.1: Other Assets (in millions) Jun 30, Dec 31, Nonmarketable equity investments: Cost method: Federal bank stock $ 5,820 6,407 Private equity 1,367 1,465 Auction rate securities 420 525 Total cost method 7,607 8,397 Equity method: LIHTC (1) 9,828 9,714 Private equity 3,740 3,635 Tax-advantaged renewable energy 1,960 2,054 New market tax credit and other 295 305 Total equity method 15,823 15,708 Fair value (2) 3,986 3,275 Total nonmarketable equity investments 27,416 27,380 Corporate/bank-owned life insurance 19,430 19,325 Accounts receivable (3) 41,853 31,056 Interest receivable 5,401 5,339 Core deposit intangibles 1,193 1,620 Customer relationship and other amortized intangibles 940 1,089 Foreclosed assets: Residential real estate: Government insured/guaranteed (3) 149 197 Non-government insured/guaranteed 285 378 Non-residential real estate 347 403 Operating lease assets 9,713 10,089 Due from customers on acceptances 192 196 Other 12,047 17,469 Total other assets $ 118,966 114,541 (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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Net realized gains from nonmarketable equity investments $ 87 129 $ 374 314 All other (195 ) (135 ) (240 ) (321 ) Total $ (108 ) (6 ) $ 134 (7 )

Securitizations and Variable 35

Securitizations and Variable Interest Entities (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 2017 Cash $ — 112 — 112 Federal funds sold, securities purchased under resale agreements and other short-term investments — 424 — 424 Trading assets 1,431 50 201 1,682 Investment securities (1) 5,145 — 381 5,526 Loans 5,456 12,096 121 17,673 Mortgage servicing rights 13,337 — — 13,337 Derivative assets 77 — — 77 Other assets 10,321 339 6 10,666 Total assets 35,767 13,021 709 49,497 Short-term borrowings — — 539 539 Derivative liabilities 92 28 (2) — 120 Accrued expenses and other liabilities 235 96 (2) 1 332 Long-term debt 3,282 2,835 (2) 122 6,239 Total liabilities 3,609 2,959 662 7,230 Noncontrolling interests — 86 — 86 Net assets $ 32,158 9,976 47 42,181 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 June 30, 2017 Residential mortgage loan securitizations: Conforming (2) $ 1,171,325 2,299 12,394 — (180 ) 14,513 Other/nonconforming 16,198 801 90 — (2 ) 889 Commercial mortgage securitizations 144,257 2,556 853 75 (33 ) 3,451 Collateralized debt obligations: Debt securities 1,157 — — — (20 ) (20 ) Loans (3) 1,511 1,473 — — — 1,473 Asset-based finance structures 4,862 3,755 — — — 3,755 Tax credit structures 29,774 10,811 — — (3,282 ) 7,529 Collateralized loan obligations 29 8 — — — 8 Investment funds 214 54 — — — 54 Other (4) 2,611 596 — (90 ) — 506 Total $ 1,371,938 22,353 13,337 (15 ) (3,517 ) 32,158 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,299 12,394 — 875 15,568 Other/nonconforming 801 90 — 2 893 Commercial mortgage securitizations 2,556 853 79 9,767 13,255 Collateralized debt obligations: Debt securities — — — 20 20 Loans (3) 1,473 — — — 1,473 Asset-based finance structures 3,755 — — 71 3,826 Tax credit structures 10,811 — — 1,024 11,835 Collateralized loan obligations 8 — — — 8 Investment funds 54 — — — 54 Other (4) 596 — 107 158 861 Total $ 22,353 13,337 186 11,917 47,793 (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 $10.3 billion at both June 30, 2017 , and December 31, 2016 . 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 $1.1 billion and $1.2 billion at June 30, 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 June 30, 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 June 30, Proceeds from securitizations and whole loan sales $ 52,824 4 66,455 83 Fees from servicing rights retained 840 — 864 — Cash flows from other interests held (1) 641 — 627 — Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions 5 — 15 — Agency securitizations (3) 23 — 35 — Servicing advances, net of repayments (20 ) — (39 ) — Six months ended June 30, Proceeds from securitizations and whole loan sales $ 111,081 25 111,471 133 Fees from servicing rights retained 1,694 — 1,745 — Cash flows from other interests held (1) 1,475 — 1,034 1 Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions 7 — 18 — Agency securitizations (3) 46 — 82 — Servicing advances, net of repayments (162 ) — (107 ) — (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. Second quarter and first half of 2017 exclude $1.6 billion and $ 3.9 billion , respectively in delinquent insured/guaranteed loans that we service and have exercised our option to purchase out of GNMA pools, compared with $2.0 billion and $4.9 billion , respectively, in the same periods of 2016 . These loans are predominantly insured by the FHA or guaranteed by the VA.
Residential Mortgage Servicing Rights	Table 7.4 presents the key weighted-average assumptions we used to measure residential mortgage servicing rights at the date of securitization. Table 7.4: Residential Mortgage Servicing Rights Residential mortgage servicing rights 2017 2016 Quarter ended June 30, Prepayment speed (1) 12.8 % 12.1 Discount rate 6.9 6.7 Cost to service ($ per loan) (2) $ 152 141 Six months ended June 30, Prepayment speed (1) 11.5 % 12.5 Discount rate 6.8 6.8 Cost to service ($ per loan) (2) $ 142 143 (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 June 30, 2017 $ 12,789 24 — 487 538 Expected weighted-average life (in years) 6.2 3.8 0.0 5.5 5.3 Key economic assumptions: Prepayment speed assumption (3) 10.5 % 17.3 — Decrease in fair value from: 10% adverse change $ 560 1 — 25% adverse change 1,326 2 — Discount rate assumption 6.8 % 13.4 — 4.0 2.8 Decrease in fair value from: 100 basis point increase $ 632 — — 21 24 200 basis point increase 1,206 1 — 40 46 Cost to service assumption ($ per loan) 149 Decrease in fair value from: 10% adverse change 484 25% adverse change 1,210 Credit loss assumption — % 2.4 — 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) Six months ended June 30, (in millions) Jun 30, 2017 Dec 31, 2016 Jun 30, 2017 Dec 31, 2016 2017 2016 Commercial: Real estate mortgage $ 98,330 106,745 3,507 3,325 382 156 Total commercial 98,330 106,745 3,507 3,325 382 156 Consumer: Real estate 1-4 family first mortgage 1,149,427 1,160,191 14,287 16,453 395 534 Total consumer 1,149,427 1,160,191 14,287 16,453 395 534 Total off-balance sheet sold or securitized loans (2) $ 1,247,757 1,266,936 17,794 19,778 777 690 (1) Includes $1.6 billion and $1.7 billion of commercial foreclosed assets and $1.4 billion and $1.8 billion of consumer foreclosed assets at June 30, 2017 , and December 31, 2016 , respectively. (2) At June 30, 2017 , and December 31, 2016 , the table includes total loans of $1.2 trillion at both dates, delinquent loans of $9.1 billion and $9.8 billion , and foreclosed assets of $978 million 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 June 30, 2017 Secured borrowings: Municipal tender option bond securitizations $ 677 588 (540 ) — 48 Residential mortgage securitizations 124 121 (122 ) — (1 ) Total secured borrowings 801 709 (662 ) — 47 Consolidated VIEs: Commercial and industrial loans and leases 8,698 8,279 (2,055 ) (13 ) 6,211 Nonconforming residential mortgage loan securitizations 3,006 2,637 (895 ) — 1,742 Commercial real estate loans 1,922 1,922 — — 1,922 Structured asset finance 16 10 (7 ) — 3 Investment funds 52 52 (1 ) (32 ) 19 Other 140 121 (1 ) (41 ) 79 Total consolidated VIEs 13,834 13,021 (2,959 ) (86 ) 9,976 Total secured borrowings and consolidated VIEs $ 14,635 13,730 (3,621 ) (86 ) 10,023 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)	6 Months Ended
	Jun. 30, 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Fair value, beginning of period $ 13,208 11,333 $ 12,959 12,415 Servicing from securitizations or asset transfers (1) 436 477 1,019 843 Sales and other (2) (8 ) (22 ) (55 ) (22 ) Net additions 428 455 964 821 Changes in fair value: Due to changes in valuation model inputs or assumptions: Mortgage interest rates (3) (305 ) (779 ) (153 ) (1,863 ) Servicing and foreclosure costs (4) (14 ) (4 ) 13 23 Prepayment estimates and other (5) (41 ) (41 ) (46 ) 59 Net changes in valuation model inputs or assumptions (360 ) (824 ) (186 ) (1,781 ) Changes due to collection/realization of expected cash flows over time (487 ) (568 ) (948 ) (1,059 ) Total changes in fair value (847 ) (1,392 ) (1,134 ) (2,840 ) Fair value, end of period $ 12,789 10,396 $ 12,789 10,396 (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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Balance, beginning of period $ 1,402 1,359 $ 1,406 1,308 Purchases 26 24 44 45 Servicing from securitizations or asset transfers 37 38 82 135 Amortization (66 ) (68 ) (133 ) (135 ) Balance, end of period (1) $ 1,399 1,353 $ 1,399 1,353 Fair value of amortized MSRs: Beginning of period $ 2,051 1,725 $ 1,956 1,680 End of period 1,989 1,620 1,989 1,620 (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) Jun 30, 2017 Dec 31, 2016 Residential mortgage servicing: Serviced for others $ 1,189 1,205 Owned loans serviced 343 347 Subserviced for others 4 8 Total residential servicing 1,536 1,560 Commercial mortgage servicing: Serviced for others 475 479 Owned loans serviced 130 132 Subserviced for others 8 8 Total commercial servicing 613 619 Total managed servicing portfolio $ 2,149 2,179 Total serviced for others $ 1,664 1,684 Ratio of MSRs to related loans serviced for others 0.85 % 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Servicing income, net: Servicing fees: Contractually specified servicing fees $ 900 949 $ 1,807 1,903 Late charges 44 42 92 90 Ancillary fees 59 54 109 115 Unreimbursed direct servicing costs (1) (121 ) (203 ) (244 ) (356 ) Net servicing fees 882 842 1,764 1,752 Changes in fair value of MSRs carried at fair value: Due to changes in valuation model inputs or assumptions (2) (A) (360 ) (824 ) (186 ) (1,781 ) Changes due to collection/realization of expected cash flows over time (487 ) (568 ) (948 ) (1,059 ) Total changes in fair value of MSRs carried at fair value (847 ) (1,392 ) (1,134 ) (2,840 ) Amortization (66 ) (68 ) (133 ) (135 ) Net derivative gains from economic hedges (3) (B) 431 978 359 2,433 Total servicing income, net 400 360 856 1,210 Net gains on mortgage loan origination/sales activities 748 1,054 1,520 1,802 Total mortgage banking noninterest income $ 1,148 1,414 $ 2,376 3,012 Market-related valuation changes to MSRs, net of hedge results (2)(3) (A)+(B) $ 71 154 $ 173 652 (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 $167 million at June 30, 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Balance, beginning of period $ 222 355 $ 229 378 Provision for repurchase losses: Loan sales 6 8 14 15 Change in estimate (1) (45 ) (89 ) (53 ) (108 ) Net reductions (39 ) (81 ) (39 ) (93 ) Losses (5 ) (19 ) (12 ) (30 ) Balance, end of period $ 178 255 $ 178 255 (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)	6 Months Ended
	Jun. 30, 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 June 30, 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) $ 3,721 (2,322 ) 1,399 3,595 (2,189 ) 1,406 Core deposit intangibles 12,834 (11,641 ) 1,193 12,834 (11,214 ) 1,620 Customer relationship and other intangibles 3,934 (2,994 ) 940 3,928 (2,839 ) 1,089 Total amortized intangible assets $ 20,489 (16,957 ) 3,532 20,357 (16,242 ) 4,115 Unamortized intangible assets: MSRs (carried at fair value) (2) $ 12,789 12,959 Goodwill 26,573 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 June 30, 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 Six months ended June 30, 2017 (actual) $ 133 427 156 716 Estimate for the remainder of 2017 $ 127 424 149 700 Estimate for year ended December 31, 2018 227 769 293 1,289 2019 201 108 309 2020 184 89 273 2021 159 76 235 2022 140 63 203 (1) The six months ended June 30, 2017 balance includes $7 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 — (84 ) — (84 ) Goodwill from business combinations — 1,518 — 1,518 June 30, 2016 $ 16,849 8,909 1,205 26,963 December 31, 2016 $ 16,849 8,585 1,259 26,693 Reclassification of goodwill held for sale to Other Assets (1) — (96 ) — (96 ) Reduction in goodwill related to divested businesses and other — (24 ) — (24 ) June 30, 2017 (1) $ 16,849 8,465 1,259 26,573 (1) Goodwill classified as held-for-sale in other assets of $96 million as of June 30, 2017 relates to the sales agreement for Wells Fargo Insurance Services USA (and related businesses). No goodwill was classified as held-for-sale in other assets at December 31, 2016 and 2015 .

Guarantees, Pledged Assets an38

Guarantees, Pledged Assets and Collateral (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 2017 Standby letters of credit (1) $ 38 14,725 8,420 3,451 685 27,281 8,915 Securities lending and other indemnifications (2) — 1 — 1 600 602 2 Written put options (3) (334 ) 14,781 10,702 4,263 1,244 30,990 17,899 Loans and MHFS sold with recourse (4) 51 191 547 928 8,865 10,531 7,751 Factoring guarantees (5) — 621 — — — 621 557 Other guarantees 1 — 6 2 4,228 4,236 4 Total guarantees $ (244 ) 30,319 19,675 8,645 15,622 74,261 35,128 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 $9.1 billion and $9.2 billion at June 30, 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 $67 million and $175 million with related collateral of $533 million and $991 million at June 30, 2017 , and December 31, 2016 , respectively. Estimated maximum exposure to loss was $600 million at June 30, 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 and $2 million respectively, of loans associated with these agreements in the second quarter and first half of 2017 , and $1 million and $2 million in the same periods of 2016 , respectively. (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 $13.0 billion and $13.4 billion at June 30, 2017 , and December 31, 2016 , respectively, which can only be used to settle the liabilities of those entities. The table also excludes $709 million and $1.1 billion in assets pledged in transactions with VIE's accounted for as secured borrowings at June 30, 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) Jun 30, Dec 31, Trading assets and other (1) $ 107,374 84,603 Investment securities (2) 75,174 90,946 Mortgages held for sale and loans (3) 496,164 516,112 Total pledged assets $ 678,712 691,661 (1) Consists of trading assets of $36.4 billion and $33.2 billion at June 30, 2017 , and December 31, 2016 , respectively and off-balance sheet securities of $71.0 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 $107.3 billion and $84.2 billion at June 30, 2017 , and December 31, 2016 , respectively that permit the secured parties to sell or repledge the collateral. (2) Includes carrying value of $4.6 billion and $6.2 billion (fair value of $4.6 billion and $ 6.2 billion ) in collateral for repurchase agreements at June 30, 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 $87 million and $617 million in collateral pledged under repurchase agreements at June 30, 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 $4.5 billion and $15.8 billion at June 30, 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 $1.1 billion and $1.2 billion at June 30, 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) Jun 30, Dec 31, Assets: Resale and securities borrowing agreements Gross amounts recognized $ 119,721 91,123 Gross amounts offset in consolidated balance sheet (1) (31,383 ) (11,680 ) Net amounts in consolidated balance sheet (2) 88,338 79,443 Collateral not recognized in consolidated balance sheet (3) (88,141 ) (78,837 ) Net amount (4) $ 197 606 Liabilities: Repurchase and securities lending agreements Gross amounts recognized (5) $ 109,536 89,111 Gross amounts offset in consolidated balance sheet (1) (31,383 ) (11,680 ) Net amounts in consolidated balance sheet (6) 78,153 77,431 Collateral pledged but not netted in consolidated balance sheet (7) (77,796 ) (77,184 ) Net amount (8) $ 357 247 (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 June 30, 2017 , and December 31, 2016 , includes $67.6 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 $20.7 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 June 30, 2017 , and December 31, 2016 , we have received total collateral with a fair value of $130.7 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 $69.8 billion at June 30, 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 June 30, 2017 , and December 31, 2016 , we have pledged total collateral with a fair value of $111.4 billion and $91.4 billion , respectively, of which, the counterparty does not have the right to sell or repledge $4.7 billion as of June 30, 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) Jun 30, Dec 31, Repurchase agreements: Securities of U.S. Treasury and federal agencies $ 52,225 34,335 Securities of U.S. States and political subdivisions 131 81 Federal agency mortgage-backed securities 32,079 32,669 Non-agency mortgage-backed securities 1,679 2,167 Corporate debt securities 8,109 6,829 Asset-backed securities 2,352 3,010 Equity securities 937 1,309 Other 1,088 1,704 Total repurchases 98,600 82,104 Securities lending: Securities of U.S. Treasury and federal agencies 108 152 Federal agency mortgage-backed securities 174 104 Non-agency mortgage-backed securities — 1 Corporate debt securities 611 653 Equity securities (1) 10,043 6,097 Total securities lending 10,936 7,007 Total repurchases and securities lending $ 109,536 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 June 30, 2017 Repurchase agreements $ 80,504 9,792 3,790 4,514 98,600 Securities lending 8,802 518 1,616 — 10,936 Total repurchases and securities lending (1) $ 89,306 10,310 5,406 4,514 109,536 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)	6 Months Ended
	Jun. 30, 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 June 30, 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) $ 242,711 2,657 1,205 235,222 6,587 2,710 Foreign exchange contracts (1) 32,640 581 1,445 25,861 673 2,779 Total derivatives designated as qualifying hedging instruments 3,238 2,650 7,260 5,489 Derivatives not designated as hedging instruments Economic hedges: Interest rate contracts (2) 235,234 350 307 228,051 1,098 1,441 Equity contracts 9,641 672 54 7,964 545 83 Foreign exchange contracts 17,007 32 429 20,435 626 165 Credit contracts – protection purchased 436 71 — 482 102 — Subtotal 1,125 790 2,371 1,689 Customer accommodation trading and other derivatives: Interest rate contracts 6,790,132 16,211 14,741 6,018,370 57,583 61,058 Commodity contracts 66,260 1,534 1,666 65,532 3,057 2,551 Equity contracts 171,899 5,671 6,966 151,675 4,813 6,029 Foreign exchange contracts 345,994 7,673 7,381 318,999 9,595 9,798 Credit contracts – protection sold 10,845 169 266 10,483 85 389 Credit contracts – protection purchased 21,493 264 235 19,964 365 138 Other contracts 966 — 34 961 — 47 Subtotal 31,522 31,289 75,498 80,010 Total derivatives not designated as hedging instruments 32,647 32,079 77,869 81,699 Total derivatives before netting 35,885 34,729 85,129 87,188 Netting (3) (22,612 ) (23,093 ) (70,631 ) (72,696 ) Total $ 13,273 11,636 14,498 14,492 (1) Notional amounts presented exclude $500 million and $1.9 billion of interest rate contracts at June 30, 2017 , and December 31, 2016 , respectively, for certain derivatives that are combined for designation as a hedge on a single instrument. The notional amount for foreign exchange contracts at June 30, 2017 , and December 31, 2016 , excludes $12.9 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 $26.6 billion and $28.9 billion of gross derivative assets and liabilities, respectively, at June 30, 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 $9.3 billion and $5.8 billion , respectively, at June 30, 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 (1) Gross amounts offset in consolidated balance sheet (1)(2) Net amounts in consolidated balance sheet Gross amounts not offset in consolidated balance sheet (Disclosure-only netting) (3) Net amounts Percent exchanged in over-the-counter market (1)(4) June 30, 2017 Derivative assets Interest rate contracts $ 19,218 (12,424 ) 6,794 (360 ) 6,434 98 % Commodity contracts 1,534 (683 ) 851 (6 ) 845 80 Equity contracts 6,343 (3,319 ) 3,024 (452 ) 2,572 76 Foreign exchange contracts 8,286 (5,905 ) 2,381 (63 ) 2,318 100 Credit contracts – protection sold 169 (35 ) 134 — 134 10 Credit contracts – protection purchased 335 (246 ) 89 (4 ) 85 96 Total derivative assets $ 35,885 (22,612 ) 13,273 (885 ) 12,388 Derivative liabilities Interest rate contracts $ 16,253 (12,396 ) 3,857 (1,899 ) 1,958 98 % Commodity contracts 1,666 (321 ) 1,345 (22 ) 1,323 88 Equity contracts 7,020 (3,223 ) 3,797 (394 ) 3,403 84 Foreign exchange contracts 9,255 (6,921 ) 2,334 (659 ) 1,675 100 Credit contracts – protection sold 266 (227 ) 39 (33 ) 6 93 Credit contracts – protection purchased 235 (5 ) 230 (1 ) 229 8 Other contracts 34 — 34 — 34 100 Total derivative liabilities $ 34,729 (23,093 ) 11,636 (3,008 ) 8,628 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) In second quarter, 2017, we adopted Settlement to Market treatment for the cash collateralizing our interest rate derivative contracts with certain centrally cleared counterparties. As a result of this adoption, the “gross amounts recognized” and “gross amounts offset in the consolidated balance sheet” columns do not include exposure with certain centrally cleared counterparties because the contracts are considered settled by the collateral. Likewise, what remains in these gross amount columns consists primarily of over-the-counter (OTC) market contracts for most of the contract types as reflected by the high percentage of OTC contracts in the “percent exchanged in over-the counter market” column as of June 30, 2017. (2) 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 $289 million and $348 million related to derivative assets and $83 million and $114 million related to derivative liabilities at June 30, 2017 , and December 31, 2016 , respectively. Cash collateral totaled $3.6 billion and $4.3 billion , netted against derivative assets and liabilities, respectively, at June 30, 2017 , and $4.8 billion and $7.1 billion , respectively, at December 31, 2016 . (3) 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. (4) 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 June 30, 2017 Net interest income (expense) recognized on derivatives $ (122 ) (2 ) 372 2 (49 ) 201 Gains (losses) recorded in noninterest income Recognized on derivatives (287 ) (10 ) 431 (87 ) 1,426 1,473 Recognized on hedged item 268 6 (399 ) 86 (1,365 ) (1,404 ) Net recognized on fair value hedges (ineffective portion) (1) $ (19 ) (4 ) 32 (1 ) 61 69 Quarter ended June 30, 2016 Net interest income (expense) recognized on derivatives $ (170 ) (2 ) 483 2 15 328 Gains (losses) recorded in noninterest income Recognized on derivatives (1,012 ) (5 ) 1,983 134 (455 ) 645 Recognized on hedged item 1,018 6 (1,762 ) (133 ) 394 (477 ) Net recognized on fair value hedges (ineffective portion) (1) $ 6 1 221 1 (61 ) 168 Six months ended June 30, 2017 Net interest income (expense) recognized on derivatives (1) $ (253 ) (4 ) 799 6 (82 ) 466 Gains (losses) recorded in noninterest income Recognized on derivatives (161 ) (11 ) (133 ) (129 ) 1,583 1,149 Recognized on hedged item 127 6 141 130 (1,676 ) (1,272 ) Net recognized on fair value hedges (ineffective portion) $ (34 ) (5 ) 8 1 (93 ) (123 ) Six months ended June 30, 2016 Net interest income (expense) recognized on derivatives (1) $ (351 ) (4 ) 965 2 31 643 Gains (losses) recorded in noninterest income Recognized on derivatives (2,695 ) (42 ) 5,086 68 1,163 3,580 Recognized on hedged item 2,709 39 (4,569 ) (74 ) (1,008 ) (2,903 ) Net recognized on fair value hedges (ineffective portion) $ 14 (3 ) 517 (6 ) 155 677 (1) The second quarter and first half of 2017 included $0 million and $(1) million , respectively, and the second quarter and first half of 2016 included $(3) million and $(7) million , respectively, 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Gains (losses) (pre tax) recognized in OCI on derivatives $ 376 1,057 243 3,056 Gains (pre tax) reclassified from cumulative OCI into net income (1) 153 265 355 521 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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Net gains (losses) recognized on economic hedges derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (1) $ 351 566 342 1,431 Other (2) (51 ) (117 ) (45 ) (252 ) Equity contracts (3) (205 ) 205 (686 ) 288 Foreign exchange contracts (2) (441 ) 495 (534 ) 329 Credit contracts (2) 10 — 14 — Subtotal (4) (336 ) 1,149 (909 ) 1,796 Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest rate contracts Recognized in noninterest income: Mortgage banking (5) 254 510 447 975 Other (6) 18 (280 ) 63 (730 ) Commodity contracts (6) 15 64 75 117 Equity contracts (6) (565 ) (315 ) (1,674 ) (295 ) Foreign exchange contracts (6) 16 276 201 498 Credit contracts (6) (13 ) (25 ) (28 ) (41 ) Other (2) 2 (9 ) 14 (30 ) Subtotal (273 ) 221 (902 ) 494 Net gains (losses) recognized related to derivatives not designated as hedging instruments $ (609 ) 1,370 (1,811 ) 2,290 (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 $(48) million and $(46) million for the second quarter and first half of 2017, respectively, and $(113) million and $(244) million for the second quarter and first half of 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 June 30, 2017 Credit default swaps on: Corporate bonds $ 21 1,860 470 1,288 572 1,197 2017 - 2027 Structured products 111 250 244 221 29 153 2020 - 2047 Credit protection on: Default swap index — 4,638 761 494 4,144 6,803 2017 - 2027 Commercial mortgage-backed securities index 116 476 — 435 41 157 2047 - 2058 Asset-backed securities index 17 43 — 39 4 5 2045 - 2046 Other 1 3,578 3,579 — 3,578 11,137 2017 - 2028 Total credit derivatives $ 266 10,845 5,054 2,477 8,368 19,452 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)	6 Months Ended
	Jun. 30, 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 June 30, 2017 Trading assets $ — — — 832 344 — Available-for-sale securities: Securities of U.S. Treasury and federal agencies — — — 14,940 2,956 — Securities of U.S. states and political subdivisions — — — — 50,456 208 Mortgage-backed securities — 41 — — 148,097 76 Other debt securities (1) — 491 1,129 — 45,523 26 Total debt securities — 532 1,129 14,940 247,032 310 Total marketable equity securities — — — — 287 — Total available-for-sale securities — 532 1,129 14,940 247,319 310 Derivatives assets — — — 21 3 — Derivatives liabilities — — — (18 ) (7 ) — 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 June 30, 2017 Trading assets Securities of U.S. Treasury and federal agencies $ 13,484 3,061 — — 16,545 Securities of U.S. states and political subdivisions — 3,070 9 — 3,079 Collateralized loan obligations — 386 403 — 789 Corporate debt securities — 10,229 26 — 10,255 Mortgage-backed securities — 22,480 — — 22,480 Asset-backed securities — 1,160 — — 1,160 Equity securities 27,286 240 — — 27,526 Total trading securities (1) 40,770 40,626 438 — 81,834 Other trading assets — 1,734 39 — 1,773 Total trading assets 40,770 42,360 477 — 83,607 Securities of U.S. Treasury and federal agencies 14,940 2,956 — — 17,896 Securities of U.S. states and political subdivisions — 50,456 1,557 (2) — 52,013 Mortgage-backed securities: Federal agencies — 135,938 — — 135,938 Residential — 7,358 1 — 7,359 Commercial — 5,338 75 — 5,413 Total mortgage-backed securities — 148,634 76 — 148,710 Corporate debt securities 54 9,172 376 — 9,602 Collateralized loan and other debt obligations (3) — 32,453 1,002 (2) — 33,455 Asset-backed securities: Automobile loans and leases — 530 — — 530 Home equity loans — 319 — — 319 Other asset-backed securities — 4,777 872 (2) — 5,649 Total asset-backed securities — 5,626 872 — 6,498 Other debt securities — — — — — Total debt securities 14,994 249,297 3,883 — 268,174 Marketable equity securities: Perpetual preferred securities 178 287 — — 465 Other marketable equity securities 563 — — — 563 Total marketable equity securities 741 287 — — 1,028 Total available-for-sale securities 15,735 249,584 3,883 — 269,202 Mortgages held for sale — 18,548 995 — 19,543 Loans — — 443 — 443 Mortgage servicing rights (residential) — — 12,789 — 12,789 Derivative assets: Interest rate contracts 28 18,998 192 — 19,218 Commodity contracts — 1,504 30 — 1,534 Equity contracts 1,545 3,618 1,180 — 6,343 Foreign exchange contracts 21 8,247 18 — 8,286 Credit contracts — 320 184 — 504 Netting — — — (22,612 ) (4) (22,612 ) Total derivative assets 1,594 32,687 1,604 (22,612 ) 13,273 Other assets – excluding nonmarketable equity investments at NAV — 26 3,960 — 3,986 Total assets included in the fair value hierarchy $ 58,099 343,205 24,151 (22,612 ) 402,843 Other assets – nonmarketable equity investments at NAV (5) — Total assets recorded at fair value $ 402,843 Derivative liabilities: Interest rate contracts $ (30 ) (16,146 ) (77 ) — (16,253 ) Commodity contracts — (1,653 ) (13 ) — (1,666 ) Equity contracts (1,089 ) (4,280 ) (1,651 ) — (7,020 ) Foreign exchange contracts (18 ) (9,223 ) (14 ) — (9,255 ) Credit contracts — (389 ) (112 ) — (501 ) Other derivative contracts — — (34 ) — (34 ) Netting — — — 23,093 (4) 23,093 Total derivative liabilities (1,137 ) (31,691 ) (1,901 ) 23,093 (11,636 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (8,906 ) (622 ) — — (9,528 ) Corporate debt securities — (5,180 ) — — (5,180 ) Equity securities (2,073 ) (18 ) — — (2,091 ) Other securities — (45 ) — — (45 ) Total short sale liabilities (10,979 ) (5,865 ) — — (16,844 ) Other liabilities — — (3 ) — (3 ) Total liabilities recorded at fair value $ (12,116 ) (37,556 ) (1,904 ) 23,093 (28,483 ) (1) Net gains (losses) from trading activities recognized in the income statement for the first half of June 30, 2017 and 2016 include $1.1 billion and $1.1 billion in net unrealized gains (losses) on trading securities held at June 30, 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 $998 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	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 June 30, 2017 Trading assets $ — — — (16 ) 16 — — Available-for-sale securities — — 424 — — (424 ) — Mortgages held for sale — — 5 (19 ) 19 (5 ) — Other assets — — — (1 ) 1 — — Net derivative assets and liabilities (2) — — 80 — — (80 ) — Short sale liabilities — — — — — — — Total transfers $ — — 509 (36 ) 36 (509 ) — Quarter ended June 30, 2016 Trading assets $ — (4 ) 4 — — — — Available-for-sale securities — — 16 — — (16 ) — Mortgages held for sale — — 7 (25 ) 25 (7 ) — Other assets — — — — — — — Net derivative assets and liabilities (2) — — (12 ) (3 ) 3 12 — Short sale liabilities — — — — — — — Total transfers $ — (4 ) 15 (28 ) 28 (11 ) — Six months ended June 30, 2017 Trading assets $ — — 1 (19 ) 19 (1 ) — Available-for-sale securities — — 496 (5 ) 5 (496 ) — Mortgages held for sale — — 6 (61 ) 61 (6 ) — Other assets — — — (1 ) 1 — — Net derivative assets and liabilities (2) — — 83 22 (22 ) (83 ) — Short sale liabilities — — — — — — — Total transfers $ — — 586 (64 ) 64 (586 ) — Six months ended June 30, 2016 Trading assets $ 4 (4 ) 15 (4 ) — (11 ) — Available-for-sale securities — — 16 (80 ) 80 (16 ) — Mortgages held for sale — — 9 (54 ) 54 (9 ) — Other assets — — — — — — — Net derivative assets and liabilities (2) — — 50 (28 ) 28 (50 ) — Short sale liabilities (1 ) — — 1 — — — Total transfers $ 3 (4 ) 90 (165 ) 162 (86 ) — (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 June 30, 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 June 30, 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 June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 3 — — 6 — — 9 — Collateralized loan obligations 398 (7 ) — 12 — — 403 7 Corporate debt securities 37 1 — (12 ) — — 26 (1 ) Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 438 (6 ) — 6 — — 438 6 Other trading assets 26 (1 ) — (2 ) 16 — 39 (1 ) Total trading assets 464 (7 ) — 4 16 — 477 5 (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,360 1 2 618 — (424 ) 1,557 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 89 (3 ) (5 ) (6 ) — — 75 (7 ) Total mortgage-backed securities 90 (3 ) (5 ) (6 ) — — 76 (7 ) Corporate debt securities 391 — 2 (17 ) — — 376 — Collateralized loan and other debt obligations 964 5 4 29 — — 1,002 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 845 — 1 26 — — 872 — Total asset-backed securities 845 — 1 26 — — 872 — Total debt securities 3,650 3 4 650 — (424 ) 3,883 (7 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,650 3 4 650 — (424 ) 3,883 (7 ) Mortgages held for sale 957 (1 ) — 25 19 (5 ) 995 — (6) Loans 505 — — (62 ) — — 443 (4 ) (6) Mortgage servicing rights (residential) (7) 13,208 (847 ) — 428 — — 12,789 (360 ) (6) Net derivative assets and liabilities: Interest rate contracts 218 258 — (361 ) — — 115 12 Commodity contracts 19 — — — — (2 ) 17 2 Equity contracts (299 ) (14 ) — (80 ) — (78 ) (471 ) (109 ) Foreign exchange contracts 3 1 — — — — 4 1 Credit contracts 87 28 — (43 ) — — 72 (17 ) Other derivative contracts (36 ) 3 — (1 ) — — (34 ) 2 Total derivative contracts (8 ) 276 — (485 ) — (80 ) (297 ) (109 ) (8) Other assets 3,740 220 — (1 ) 1 — 3,960 226 (5) Short sale liabilities — — — — — — — — (3) Other liabilities (4 ) 1 — — — — (3 ) — (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 June 30, 2017 . Table 13.5: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended June 30, 2017 (in millions) Purchases Sales Issuances Settlements Net Quarter ended June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 6 — — — 6 Collateralized loan obligations 87 (53 ) — (22 ) 12 Corporate debt securities 3 (15 ) — — (12 ) Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 96 (68 ) — (22 ) 6 Other trading assets — — — (2 ) (2 ) Total trading assets 96 (68 ) — (24 ) 4 Available-for-sale securities: Securities of U.S. states and political subdivisions — — 655 (37 ) 618 Mortgage-backed securities: Residential — — — — — Commercial — — — (6 ) (6 ) Total mortgage-backed securities — — — (6 ) (6 ) Corporate debt securities — — — (17 ) (17 ) Collateralized loan and other debt obligations 57 — — (28 ) 29 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — — 161 (135 ) 26 Total asset-backed securities — — 161 (135 ) 26 Total debt securities 57 — 816 (223 ) 650 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 57 — 816 (223 ) 650 Mortgages held for sale 18 (88 ) 133 (38 ) 25 Loans 2 — 3 (67 ) (62 ) Mortgage servicing rights (residential) (1) — (8 ) 436 — 428 Net derivative assets and liabilities: Interest rate contracts — — — (361 ) (361 ) Commodity contracts — — — — — Equity contracts — (69 ) — (11 ) (80 ) Foreign exchange contracts — — — — — Credit contracts 2 (1 ) — (44 ) (43 ) Other derivative contracts — — — (1 ) (1 ) Total derivative contracts 2 (70 ) — (417 ) (485 ) Other assets — (1 ) — — (1 ) 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 June 30, 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 June 30, 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 June 30, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 8 — — (1 ) — — 7 — Collateralized loan obligations 268 1 — (20 ) — — 249 (4 ) Corporate debt securities 33 (3 ) — 6 — — 36 (2 ) Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 309 (2 ) — (15 ) — — 292 (6 ) Other trading assets 32 1 — — — — 33 3 Total trading assets 341 (1 ) — (15 ) — — 325 (3 ) (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,457 3 1 348 — (16 ) 1,793 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 73 — — 21 — — 94 — Total mortgage-backed securities 74 — — 21 — — 95 — Corporate debt securities 453 3 9 6 — — 471 — Collateralized loan and other debt obligations 813 8 4 126 — — 951 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 1,240 2 (7 ) (118 ) — — 1,117 (4 ) Total asset-backed securities 1,240 2 (7 ) (118 ) — — 1,117 (4 ) Total debt securities 4,037 16 7 383 — (16 ) 4,427 (4 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 4,037 16 7 383 — (16 ) 4,427 (4 ) Mortgages held for sale 1,071 6 — (11 ) 25 (7 ) 1,084 6 (6) Loans 5,221 (3 ) — (186 ) — — 5,032 (4 ) (6) Mortgage servicing rights (residential) (7) 11,333 (1,392 ) — 455 — — 10,396 (824 ) (6) Net derivative assets and liabilities: Interest rate contracts 501 660 — (471 ) — — 690 357 Commodity contracts 11 6 — 1 3 — 21 9 Equity contracts (283 ) 9 — 10 — 12 (252 ) (7 ) Foreign exchange contracts — — — — — — — — Credit contracts — (1 ) — 62 — — 61 (4 ) Other derivative contracts (77 ) (9 ) — (2 ) — — (88 ) (10 ) Total derivative contracts 152 665 — (400 ) 3 12 432 345 (8) Other assets 3,097 (181 ) — 122 — — 3,038 (181 ) (5) Short sale liabilities — — — — — — — — (3) Other liabilities (5 ) — — — — — (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 June 30, 2016 . Table 13.7: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended June 30, 2016 (in millions) Purchases Sales Issuances Settlements Net Quarter ended June 30, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 2 (2 ) — (1 ) (1 ) Collateralized loan obligations 134 (154 ) — — (20 ) Corporate debt securities 10 (4 ) — — 6 Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 146 (160 ) — (1 ) (15 ) Other trading assets — — — — — Total trading assets 146 (160 ) — (1 ) (15 ) Available-for-sale securities: Securities of U.S. states and political subdivisions — (7 ) 459 (104 ) 348 Mortgage-backed securities: Residential — — — — — Commercial 22 — — (1 ) 21 Total mortgage-backed securities 22 — — (1 ) 21 Corporate debt securities 6 — — — 6 Collateralized loan and other debt obligations 188 (4 ) — (58 ) 126 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — (28 ) 38 (128 ) (118 ) Total asset-backed securities — (28 ) 38 (128 ) (118 ) Total debt securities 216 (39 ) 497 (291 ) 383 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 216 (39 ) 497 (291 ) 383 Mortgages held for sale 22 (152 ) 164 (45 ) (11 ) Loans 8 — 84 (278 ) (186 ) Mortgage servicing rights (residential) (1) — (22 ) 477 — 455 Net derivative assets and liabilities: Interest rate contracts — — — (471 ) (471 ) Commodity contracts — — — 1 1 Equity contracts 16 1 — (7 ) 10 Foreign exchange contracts — — — — — Credit contracts — (1 ) — 63 62 Other derivative contracts — — — (2 ) (2 ) Total derivative contracts 16 — — (416 ) (400 ) Other assets 122 — — — 122 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 first half of 2017 , are presented in Table 13.8 . Table 13.8: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Six months ended June 30, 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) Six months ended June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 3 — — 6 — — 9 — Collateralized loan obligations 309 (3 ) — 97 — — 403 7 Corporate debt securities 34 1 — (11 ) 3 (1 ) 26 — Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 346 (2 ) — 92 3 (1 ) 438 7 Other trading assets 28 (3 ) — (2 ) 16 — 39 (1 ) Total trading assets 374 (5 ) — 90 19 (1 ) 477 6 (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,140 1 4 903 5 (496 ) 1,557 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 91 (6 ) (1 ) (9 ) — — 75 (11 ) Total mortgage-backed securities 92 (6 ) (1 ) (9 ) — — 76 (11 ) Corporate debt securities 432 (14 ) 10 (52 ) — — 376 — Collateralized loan and other debt obligations 879 10 45 68 — — 1,002 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 962 — 3 (93 ) — — 872 — Total asset-backed securities 962 — 3 (93 ) — — 872 — Total debt securities 3,505 (9 ) 61 817 5 (496 ) 3,883 (11 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,505 (9 ) 61 817 5 (496 ) 3,883 (11 ) Mortgages held for sale 985 (10 ) — (35 ) 61 (6 ) 995 (10 ) (6) Loans 758 (6 ) — (309 ) — — 443 (8 ) (6) Mortgage servicing rights (residential) (7) 12,959 (1,134 ) — 964 — — 12,789 (186 ) (6) Net derivative assets and liabilities: Interest rate contracts 121 467 — (473 ) — — 115 (7 ) Commodity contracts 23 2 — (6 ) — (2 ) 17 14 Equity contracts (267 ) (58 ) — (43 ) (22 ) (81 ) (471 ) (189 ) Foreign exchange contracts 12 (8 ) — — — — 4 (5 ) Credit contracts 77 35 — (40 ) — — 72 (32 ) Other derivative contracts (47 ) 14 — (1 ) — — (34 ) 14 Total derivative contracts (81 ) 452 — (563 ) (22 ) (83 ) (297 ) (205 ) (8) Other assets 3,259 701 — (1 ) 1 — 3,960 711 (5) Short sale liabilities — — — — — — — — (3) Other liabilities (4 ) 1 — — — — (3 ) — (6) (1) See Table 13.9 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 13.9 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 first half of 2017 . Table 13.9: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Six months ended June 30, 2017 (in millions) Purchases Sales Issuances Settlements Net Six months ended June 30, 2017 Trading assets: Securities of U.S. states and political subdivisions $ 7 (1 ) — — 6 Collateralized loan obligations 286 (129 ) — (60 ) 97 Corporate debt securities 9 (20 ) — — (11 ) Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 302 (150 ) — (60 ) 92 Other trading assets — — — (2 ) (2 ) Total trading assets 302 (150 ) — (62 ) 90 Available-for-sale securities: Securities of U.S. states and political subdivisions — — 1,001 (98 ) 903 Mortgage-backed securities: Residential — — — — — Commercial — — — (9 ) (9 ) Total mortgage-backed securities — — — (9 ) (9 ) Corporate debt securities 4 — — (56 ) (52 ) Collateralized loan and other debt obligations 129 — — (61 ) 68 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — — 182 (275 ) (93 ) Total asset-backed securities — — 182 (275 ) (93 ) Total debt securities 133 — 1,183 (499 ) 817 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 133 — 1,183 (499 ) 817 Mortgages held for sale 40 (244 ) 239 (70 ) (35 ) Loans 3 (129 ) 9 (192 ) (309 ) Mortgage servicing rights (residential) (1) — (55 ) 1,019 — 964 Net derivative assets and liabilities: Interest rate contracts — — — (473 ) (473 ) Commodity contracts — — — (6 ) (6 ) Equity contracts — (69 ) — 26 (43 ) Foreign exchange contracts — — — — — Credit contracts 4 (2 ) — (42 ) (40 ) Other derivative contracts — — — (1 ) (1 ) Total derivative contracts 4 (71 ) — (496 ) (563 ) Other assets — (1 ) — — (1 ) 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 first half of 2016 , are presented in Table 13.10 . Table 13.10: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Six months ended June 30, 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) Six months ended June 30, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 8 — — (1 ) — — 7 — Collateralized loan obligations 343 (24 ) — (59 ) — (11 ) 249 (25 ) Corporate debt securities 56 (8 ) — (12 ) — — 36 (6 ) Mortgage-backed securities — — — — — — — — Asset-backed securities — — — — — — — — Equity securities — — — — — — — — Total trading securities 407 (32 ) — (72 ) — (11 ) 292 (31 ) Other trading assets 34 (1 ) — — — — 33 3 Total trading assets 441 (33 ) — (72 ) — (11 ) 325 (28 ) (3) Available-for-sale securities: Securities of U.S. states and political subdivisions 1,500 4 4 221 80 (16 ) 1,793 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 73 — — 21 — — 94 — Total mortgage-backed securities 74 — — 21 — — 95 — Corporate debt securities 405 5 28 33 — — 471 — Collateralized loan and other debt obligations 565 23 (20 ) 383 — — 951 — Asset-backed securities: Automobile loans and leases — — — — — — — — Other asset-backed securities 1,182 2 (7 ) (60 ) — — 1,117 (4 ) Total asset-backed securities 1,182 2 (7 ) (60 ) — — 1,117 (4 ) Total debt securities 3,726 34 5 598 80 (16 ) 4,427 (4 ) (4) Marketable equity securities: Perpetual preferred securities — — — — — — — — Other marketable equity securities — — — — — — — — Total marketable equity securities — — — — — — — — (5) Total available-for-sale securities 3,726 34 5 598 80 (16 ) 4,427 (4 ) Mortgages held for sale 1,082 30 — (73 ) 54 (9 ) 1,084 27 (6) Loans 5,316 (4 ) — (280 ) — — 5,032 (6 ) (6) Mortgage servicing rights (residential) (7) 12,415 (2,840 ) — 821 — — 10,396 (1,781 ) (6) Net derivative assets and liabilities: Interest rate contracts 288 1,259 — (850 ) — (7 ) 690 458 Commodity contracts 12 8 — (2 ) 3 — 21 13 Equity contracts (111 ) 7 — (130 ) 25 (43 ) (252 ) (160 ) Foreign exchange contracts — — — — — — — — Credit contracts (3 ) 8 — 56 — — 61 4 Other derivative contracts (58 ) (30 ) — — — — (88 ) (30 ) Total derivative contracts 128 1,252 — (926 ) 28 (50 ) 432 285 (8) Other assets 3,065 (238 ) — 211 — — 3,038 (239 ) (5) Short sale liabilities — — — — — — — — (3) Other liabilities (30 ) — — 25 — — (5 ) — (6) (1) See Table 13.11 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 13.11 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 first half of 2016 . Table 13.11: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Six months ended June 30, 2016 (in millions) Purchases Sales Issuances Settlements Net Six months ended June 30, 2016 Trading assets: Securities of U.S. states and political subdivisions $ 2 (2 ) — (1 ) (1 ) Collateralized loan obligations 190 (249 ) — — (59 ) Corporate debt securities 13 (25 ) — — (12 ) Mortgage-backed securities — — — — — Asset-backed securities — — — — — Equity securities — — — — — Total trading securities 205 (276 ) — (1 ) (72 ) Other trading assets — — — — — Total trading assets 205 (276 ) — (1 ) (72 ) Available-for-sale securities: Securities of U.S. states and political subdivisions 28 (7 ) 475 (275 ) 221 Mortgage-backed securities: Residential — — — — — Commercial 22 — — (1 ) 21 Total mortgage-backed securities 22 — — (1 ) 21 Corporate debt securities 34 — — (1 ) 33 Collateralized loan and other debt obligations 489 (4 ) — (102 ) 383 Asset-backed securities: Automobile loans and leases — — — — — Other asset-backed securities — (28 ) 198 (230 ) (60 ) Total asset-backed securities — (28 ) 198 (230 ) (60 ) Total debt securities 573 (39 ) 673 (609 ) 598 Marketable equity securities: Perpetual preferred securities — — — — — Other marketable equity securities — — — — — Total marketable equity securities — — — — — Total available-for-sale securities 573 (39 ) 673 (609 ) 598 Mortgages held for sale 44 (311 ) 282 (88 ) (73 ) Loans 12 — 172 (464 ) (280 ) Mortgage servicing rights (residential) (1) — (22 ) 843 — 821 Net derivative assets and liabilities: Interest rate contracts — — — (850 ) (850 ) Commodity contracts — — — (2 ) (2 ) Equity contracts 29 (146 ) — (13 ) (130 ) Foreign exchange contracts — — — — — Credit contracts 3 (1 ) — 54 56 Other derivative contracts — — — — — Total derivative contracts 32 (147 ) — (811 ) (926 ) Other assets 211 — — — 211 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 13.12: Valuation Techniques – Recurring Basis – June 30, 2017 ($ in millions, except cost to service amounts) Fair Value Level 3 Valuation Technique(s) Significant Unobservable Input Range of Inputs Weighted Average (1) June 30, 2017 Trading and available-for-sale securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 1,324 Discounted cash flow Discount rate 1.2 - 5.0 % 2.1 Auction rate securities and other municipal bonds 34 Discounted cash flow Discount rate 4.2 - 4.4 4.3 208 Vendor priced Collateralized loan and other debt obligations (2) 403 Market comparable pricing Comparability adjustment (19.5 ) - 20.8 2.8 1,002 Vendor priced Asset-backed securities: Diversified payment rights (3) 358 Discounted cash flow Discount rate 1.7 - 4.0 2.9 Other commercial and consumer 488 (4) Discounted cash flow Discount rate 3.3 - 4.7 4.0 Weighted average life 0.3 - 3.7 yrs 2.2 26 Vendor priced Mortgages held for sale (residential) 969 Discounted cash flow Default rate 0.5 - 7.0 % 1.7 Discount rate 1.1 - 6.9 5.2 Loss severity 0.0 - 45.2 27.1 Prepayment rate 7.1 - 18.3 10.2 26 Market comparable pricing Comparability adjustment (53.3 ) - 0.0 (38.5 ) Loans 443 (5) Discounted cash flow Discount rate 0.0 - 7.1 0.3 Prepayment rate 9.1 - 100.0 94.4 Mortgage servicing rights (residential) 12,789 Discounted cash flow Cost to service per loan (6) $ 79 - 566 149 Discount rate 6.5 - 15.2 % 6.8 Prepayment rate (7) 9.6 - 21.7 10.5 Net derivative assets and (liabilities): Interest rate contracts 103 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 10.0 Interest rate contracts: derivative loan commitments 12 Discounted cash flow Fall-out factor 1.0 - 99.0 17.2 Initial-value servicing (41.8 ) - 111.8 bps 30.8 Equity contracts 95 Discounted cash flow Conversion factor (10.1 ) - 0.0 % (7.9 ) Weighted average life 0.5 - 2.5 yrs 1.6 (566 ) Option model Correlation factor (77.0 ) - 98.5 % 37.2 Volatility factor 5.0 - 118.2 20.0 Credit contracts (4 ) Market comparable pricing Comparability adjustment (21.1 ) - 36.0 (1.5 ) 76 Option model Credit spread 0.0 - 10.1 1.0 Loss severity 12.0 - 60.0 48.6 Other assets: nonmarketable equity investments 10 Discounted cash flow Discount rate 5.0 - 10.3 9.4 Volatility Factor 1.2 - 1.3 1.3 3,950 Market comparable pricing Comparability adjustment (20.1 ) - (4.0 ) (15.1 ) Insignificant Level 3 assets, net of liabilities 501 (8) Total level 3 assets, net of liabilities $ 22,247 (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 $998 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 - $288 . (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 $24.2 billion and total Level 3 liabilities of $1.9 billion , before netting of derivative balances. Table 13.13: Valuation Techniques – Recurring Basis – December 31, 2016 ($ 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 June 30, 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 June 30, 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) $ — 2,108 1,324 3,432 — 2,312 1,350 3,662 Loans held for sale — 10 — 10 — 8 — 8 Loans: Commercial — 442 — 442 — 464 — 464 Consumer — 349 5 354 — 822 7 829 Total loans (2) — 791 5 796 — 1,286 7 1,293 Other assets - excluding nonmarketable equity investments at NAV (3) — 188 178 366 — 233 412 645 Total included in the fair value hierarchy $ — 3,097 1,507 4,604 — 3,839 1,769 5,608 Other assets - nonmarketable equity investments at NAV (4) 4 13 Total assets at fair value on a nonrecurring basis $ 4,608 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 Six months ended June 30, (in millions) 2017 2016 Mortgages held for sale (LOCOM) $ 14 30 Loans held for sale (1 ) — Loans: Commercial (186 ) (560 ) Consumer (261 ) (431 ) Total loans (1) (447 ) (991 ) Other assets (2) (66 ) (259 ) Total $ (500 ) (1,220 ) (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) June 30, 2017 Residential mortgages held for sale (LOCOM) $ 1,324 (3) Discounted cash flow Default rate (4) 0.1 — 8.5 % 1.7 % Discount rate 1.5 — 8.5 3.8 Loss severity 0.7 — 48.8 2.5 Prepayment rate (5) 3.6 — 100.0 48.8 Other assets: nonmarketable equity investments 41 Discounted cash flow Discount rate 5.0 — 15.0 10.0 Insignificant level 3 assets 142 Total $ 1,507 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 13.13 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 June 30, 2017 , and December 31, 2016 , and $31 million and $33 million of other mortgage loans that are not government insured/guaranteed at June 30, 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 June 30, 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 $ 1,742 1,804 (62 ) 1,332 1,418 (86 ) Nonaccrual loans 65 73 (8 ) 100 115 (15 ) Mortgages held for sale: Total loans 19,543 19,034 509 22,042 21,961 81 Nonaccrual loans 127 168 (41 ) 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 443 469 (26 ) 758 775 (17 ) Nonaccrual loans 272 296 (24 ) 297 318 (21 ) Other assets (1) 3,986 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 June 30, Trading assets - loans $ — 11 1 — 16 1 Mortgages held for sale 288 — — 611 — — Loans — — — — — (3 ) Other assets — — 221 — — (176 ) Other interests held (1) — (2 ) — — 1 — Six months ended June 30, Trading assets – loans $ — 36 1 — 26 1 Mortgages held for sale 567 — — 1,176 — — Loans — — — — — (4 ) Other assets — — 711 — — (234 ) Other interests held (1) — (4 ) — — (1 ) — (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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Gains (losses) attributable to instrument-specific credit risk: Trading assets – loans $ 11 16 36 26 Mortgages held for sale (4 ) (1 ) (5 ) (5 ) Total $ 7 15 31 21
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 June 30, 2017 Financial assets Cash and due from banks (1) $ 20,248 20,248 — — 20,248 Federal funds sold, securities purchased under resale agreements and other short-term investments (1) 264,706 14,247 250,382 77 264,706 Held-to-maturity securities 140,392 45,335 94,033 1,022 140,390 Mortgages held for sale (2) 5,264 — 3,949 1,324 5,273 Loans held for sale 156 — 157 — 157 Loans, net (3) 926,970 — 56,351 882,300 938,651 Nonmarketable equity investments (cost method) Excluding investments at NAV 7,587 — 20 8,104 8,124 Total financial assets included in the fair value hierarchy 1,365,323 79,830 404,892 892,827 1,377,549 Investments at NAV (4) 20 22 Total financial assets $ 1,365,343 1,377,571 Financial liabilities Deposits $ 1,305,830 — 1,283,587 22,266 1,305,853 Short-term borrowings (1) 95,356 — 95,356 — 95,356 Long-term debt (5) 238,862 — 235,085 6,992 242,077 Total financial liabilities $ 1,640,048 — 1,614,028 29,258 1,643,286 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 June 30, 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 June 30, 2017 , and December 31, 2016 .

Preferred Stock (Tables)

Preferred Stock (Tables)	6 Months Ended
	Jun. 30, 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 June 30, 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 Series Y 5.625% Non-Cumulative Perpetual Class A Preferred Stock 25,000 27,600 — — ESOP Cumulative Convertible Preferred Stock (2) — 1,982,996 — 1,439,181 Total 12,463,306 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 June 30, 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 — Series Y (1) 5.625% Non-Cumulative Perpetual Class A Preferred Stock 27,600 690 690 — — — — — ESOP Cumulative Convertible Preferred Stock 1,982,996 1,983 1,983 — 1,439,181 1,439 1,439 — Total 12,104,127 $ 27,184 25,785 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) Jun 30, Dec 31, Jun 30, Dec 31, Minimum Maximum ESOP Preferred Stock $1,000 liquidation preference per share 2017 700,102 — $ 700 — 7.00 % 8.00 2016 322,826 358,528 323 358 9.30 10.30 2015 187,436 200,820 187 201 8.90 9.90 2014 237,151 255,413 237 255 8.70 9.70 2013 201,948 222,558 202 223 8.50 9.50 2012 128,634 144,072 129 144 10.00 11.00 2011 129,296 149,301 129 149 9.00 10.00 2010 75,603 90,775 76 91 9.50 10.50 2008 — 17,714 — 18 10.50 11.50 Total ESOP Preferred Stock (1) 1,982,996 1,439,181 $ 1,983 1,439 Unearned ESOP shares (2) $ (2,119 ) (1,565 ) (1) At June 30, 2017 and December 31, 2016 , additional paid-in capital included $136 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)	6 Months Ended
	Jun. 30, 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 June 30, Service cost $ 2 — — 1 — — Interest cost 103 6 7 109 6 10 Expected return on plan assets (163 ) — (8 ) (141 ) — (7 ) Amortization of net actuarial loss (gain) 38 4 (3 ) 33 3 (1 ) Amortization of prior service credit — — (2 ) — — — Settlement loss — 4 — 4 — — Net periodic benefit cost (income) $ (20 ) 14 (6 ) 6 9 2 Six months ended June 30, Service cost $ 3 — — 2 — — Interest cost 206 12 14 218 13 20 Expected return on plan assets (326 ) — (15 ) (283 ) — (15 ) Amortization of net actuarial loss (gain) 76 6 (5 ) 66 6 (2 ) Amortization of prior service credit — — (5 ) — — — Settlement loss 1 6 — 4 2 — Net periodic benefit cost (income) $ (40 ) 24 (11 ) 7 21 3

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 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 June 30, Six months ended June 30, (in millions, except per share amounts) 2017 2016 2017 2016 Wells Fargo net income $ 5,810 5,558 $ 11,267 11,020 Less: Preferred stock dividends and other 406 385 807 762 Wells Fargo net income applicable to common stock (numerator) $ 5,404 5,173 $ 10,460 10,258 Earnings per common share Average common shares outstanding (denominator) 4,989.9 5,066.9 4,999.2 5,071.3 Per share $ 1.08 1.02 $ 2.09 2.02 Diluted earnings per common share Average common shares outstanding 4,989.9 5,066.9 4,999.2 5,071.3 Add: Stock options 17.2 19.6 19.3 20.4 Restricted share rights 19.9 21.0 24.7 27.4 Warrants 10.7 10.6 11.6 10.7 Diluted average common shares outstanding (denominator) 5,037.7 5,118.1 5,054.8 5,129.8 Per share $ 1.07 1.01 $ 2.07 2.00
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 June 30, Six months ended June 30, (in millions) 2017 2016 2017 2016 Options 1.8 2.7 2.1 3.7

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 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 June 30, Six months ended June 30, 2017 2016 2017 2016 (in millions) Before tax Tax effect Net of tax Before tax Tax effect Net of tax Before tax Tax effect Net of tax Before tax Tax effect Net of tax Investment securities: Net unrealized gains arising during the period $ 1,565 (589 ) 976 1,571 (596 ) 975 1,934 (722 ) 1,212 2,366 (906 ) 1,460 Reclassification of net (gains) losses to net income: Interest income on investment securities (1) 45 (17 ) 28 3 (1 ) 2 52 (20 ) 32 3 (1 ) 2 Net gains on debt securities (120 ) 44 (76 ) (447 ) 168 (279 ) (156 ) 57 (99 ) (691 ) 259 (432 ) Net gains from equity investments (101 ) 35 (66 ) (60 ) 23 (37 ) (217 ) 79 (138 ) (119 ) 45 (74 ) Other noninterest income (1 ) — (1 ) — — — (1 ) — (1 ) (1 ) — (1 ) Subtotal reclassifications to net income (177 ) 62 (115 ) (504 ) 190 (314 ) (322 ) 116 (206 ) (808 ) 303 (505 ) Net change 1,388 (527 ) 861 1,067 (406 ) 661 1,612 (606 ) 1,006 1,558 (603 ) 955 Derivatives and hedging activities: Net unrealized gains arising during the period 376 (142 ) 234 1,057 (399 ) 658 243 (92 ) 151 3,056 (1,152 ) 1,904 Reclassification of net (gains) losses to net income: Interest income on loans (156 ) 59 (97 ) (268 ) 101 (167 ) (361 ) 136 (225 ) (528 ) 199 (329 ) Interest expense on long-term debt 3 (1 ) 2 3 (1 ) 2 6 (2 ) 4 7 (3 ) 4 Subtotal reclassifications to net income (153 ) 58 (95 ) (265 ) 100 (165 ) (355 ) 134 (221 ) (521 ) 196 (325 ) Net change 223 (84 ) 139 792 (299 ) 493 (112 ) 42 (70 ) 2,535 (956 ) 1,579 Defined benefit plans adjustments: Net actuarial and prior service losses arising during the period — — — (19 ) 7 (12 ) (7 ) 3 (4 ) (27 ) 10 (17 ) Reclassification of amounts to net periodic benefit costs (2): Amortization of net actuarial loss 39 (16 ) 23 35 (14 ) 21 77 (30 ) 47 70 (27 ) 43 Settlements and other 2 1 3 4 (1 ) 3 2 1 3 6 (2 ) 4 Subtotal reclassifications to net periodic benefit costs 41 (15 ) 26 39 (15 ) 24 79 (29 ) 50 76 (29 ) 47 Net change 41 (15 ) 26 20 (8 ) 12 72 (26 ) 46 49 (19 ) 30 Foreign currency translation adjustments: Net unrealized gains (losses) arising during the period 31 2 33 (6 ) (1 ) (7 ) 47 3 50 37 7 44 Net change 31 2 33 (6 ) (1 ) (7 ) 47 3 50 37 7 44 Other comprehensive income $ 1,683 (624 ) 1,059 1,873 (714 ) 1,159 1,619 (587 ) 1,032 4,179 (1,571 ) 2,608 Less: Other comprehensive income (loss) from noncontrolling interests, net of tax (9 ) (15 ) 5 (43 ) Wells Fargo other comprehensive income, net of tax $ 1,068 1,174 1,027 2,651 (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 June 30, 2017 Balance, beginning of period $ (967 ) (120 ) (1,923 ) (168 ) (3,178 ) Net unrealized gains arising during the period 976 234 — 33 1,243 Amounts reclassified from accumulated other comprehensive income (115 ) (95 ) 26 — (184 ) Net change 861 139 26 33 1,059 Less: Other comprehensive income (loss) from noncontrolling interests (10 ) — — 1 (9 ) Balance, end of period $ (96 ) 19 (1,897 ) (136 ) (2,110 ) Quarter ended June 30, 2016 Balance, beginning of period $ 2,137 1,706 (1,933 ) (136 ) 1,774 Net unrealized gains (losses) arising during the period 975 658 (12 ) (7 ) 1,614 Amounts reclassified from accumulated other comprehensive income (314 ) (165 ) 24 — (455 ) Net change 661 493 12 (7 ) 1,159 Less: Other comprehensive loss from noncontrolling interests (14 ) — — (1 ) (15 ) Balance, end of period $ 2,812 2,199 (1,921 ) (142 ) 2,948 Six months ended June 30, 2017 Balance, beginning of period $ (1,099 ) 89 (1,943 ) (184 ) (3,137 ) Net unrealized gains (losses) arising during the period 1,212 151 (4 ) 50 1,409 Amounts reclassified from accumulated other comprehensive income (206 ) (221 ) 50 — (377 ) Net change 1,006 (70 ) 46 50 1,032 Less: Other comprehensive income from noncontrolling interests 3 — — 2 5 Balance, end of period $ (96 ) 19 (1,897 ) (136 ) (2,110 ) Six months ended June 30, 2016 Balance, beginning of period $ 1,813 620 (1,951 ) (185 ) 297 Net unrealized gains (losses) arising during the period 1,460 1,904 (17 ) 44 3,391 Amounts reclassified from accumulated other comprehensive income (505 ) (325 ) 47 — (783 ) Net change 955 1,579 30 44 2,608 Less: Other comprehensive income (loss) from noncontrolling interests (44 ) — — 1 (43 ) Balance, end of period $ 2,812 2,199 (1,921 ) (142 ) 2,948

Operating Segments (Tables)

Operating Segments (Tables)	6 Months Ended
	Jun. 30, 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 June 30, Net interest income (2) $ 7,548 7,379 4,278 3,919 1,127 932 (470 ) (497 ) 12,483 11,733 Provision (reversal of provision) for credit losses 623 689 (65 ) 385 7 2 (10 ) (2 ) 555 1,074 Noninterest income 4,741 4,825 2,673 3,365 3,055 2,987 (783 ) (748 ) 9,686 10,429 Noninterest expense 7,223 6,648 4,078 4,036 3,075 2,976 (835 ) (794 ) 13,541 12,866 Income (loss) before income tax expense (benefit) 4,443 4,867 2,938 2,863 1,100 941 (408 ) (449 ) 8,073 8,222 Income tax expense (benefit) 1,404 1,667 559 795 417 358 (155 ) (171 ) 2,225 2,649 Net income (loss) before noncontrolling interests 3,039 3,200 2,379 2,068 683 583 (253 ) (278 ) 5,848 5,573 Less: Net income (loss) from noncontrolling interests 46 21 (9 ) (5 ) 1 (1 ) — — 38 15 Net income (loss) (3) $ 2,993 3,179 2,388 2,073 682 584 (253 ) (278 ) 5,810 5,558 Average loans $ 477.2 485.7 464.9 451.4 71.7 66.7 (56.9 ) (53.0 ) 956.9 950.8 Average assets 983.5 967.6 817.3 772.6 213.1 205.3 (86.8 ) (83.4 ) 1,927.1 1,862.1 Average deposits 727.2 703.7 463.0 425.8 188.2 182.5 (77.2 ) (75.3 ) 1,301.2 1,236.7 Six months ended June 30, Net interest income (2) $ 15,175 14,847 8,426 7,667 2,201 1,875 (1,019 ) (989 ) 24,783 23,400 Provision (reversal of provision) for credit losses 1,269 1,409 (108 ) 748 3 (12 ) (4 ) 15 1,160 2,160 Noninterest income 9,207 9,971 5,563 6,575 6,174 5,898 (1,556 ) (1,487 ) 19,388 20,957 Noninterest expense 14,444 13,484 8,303 8,004 6,281 6,018 (1,695 ) (1,612 ) 27,333 25,894 Income (loss) before income tax expense (benefit) 8,669 9,925 5,794 5,490 2,091 1,767 (876 ) (879 ) 15,678 16,303 Income tax expense (benefit) 2,531 3,364 1,305 1,514 779 672 (333 ) (334 ) 4,282 5,216 Net income (loss) before noncontrolling interests 6,138 6,561 4,489 3,976 1,312 1,095 (543 ) (545 ) 11,396 11,087 Less: Net income (loss) from noncontrolling interests 136 86 (14 ) (18 ) 7 (1 ) — — 129 67 Net income (loss) (3) $ 6,002 6,475 4,503 3,994 1,305 1,096 (543 ) (545 ) 11,267 11,020 Average loans $ 479.9 485.0 465.6 440.6 71.2 65.4 (56.5 ) (52.0 ) 960.2 939.0 Average assets 987.0 957.5 812.6 760.6 217.5 206.7 (88.1 ) (83.8 ) 1,929.0 1,841.0 Average deposits 722.2 693.3 464.5 426.9 191.9 183.5 (78.4 ) (75.7 ) 1,300.2 1,228.0 (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)	6 Months Ended
	Jun. 30, 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 June 30, 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. June 30, 2017 December 31, 2016 June 30, 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 $ 152,742 152,742 148,785 148,785 139,581 139,581 132,225 132,225 Tier 1 176,134 176,134 171,364 171,364 139,581 139,581 132,225 132,225 Total 208,535 218,399 204,425 214,877 152,850 162,320 145,665 155,281 Assets: Risk-weighted $ 1,232,977 1,287,327 1,274,589 1,336,198 1,114,978 1,188,024 1,143,681 1,222,876 Adjusted average (1) 1,897,370 1,897,370 1,914,802 1,914,802 1,703,737 1,703,737 1,714,524 1,714,524 Regulatory capital ratios: Common equity tier 1 capital 12.39 % 11.87 * 11.67 11.13 * 12.52 11.75 * 11.56 10.81 * Tier 1 capital 14.29 13.68 * 13.44 12.82 * 12.52 11.75 * 11.56 10.81 * Total capital 16.91 * 16.97 16.04 * 16.08 13.71 13.66 * 12.74 12.70 * Tier 1 leverage (1) 9.28 9.28 8.95 8.95 8.19 8.19 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 June 30, 2017 and December 31, 2016 . Table 19.2: Minimum Required Regulatory Capital Ratios – Transition Requirements (1) Wells Fargo & Company Wells Fargo Bank, N.A. June 30, 2017 December 31, 2016 June 30, 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 June 30, 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 June 30, 2017 .

Summary of Significant Accoun47

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Supplemental cash flow information - Noncash activities
Trading assets retained from securitization of MHFS	$ 34,317	$ 23,403
Transfers from loans to MHFS	3,215	3,309
Transfers from available-for-sale to held-to-maturity securities	45,408	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) $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)business
Business Acquisition [Line Items]
Business acquisition, number completed during period	0
Pending Acquisition [Member]
Business Acquisition [Line Items]
Business acquisition, number completed during period	1
Assets Under Management [Member]
Business Acquisition [Line Items]
Business Acquisitions, Investment Advisor | $	$ 10,000

Federal Funds Sold, Securitie49

Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments (Details) - USD ($) $ in Millions	Jun. 30, 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	$ 67,687	$ 58,215
Interest-earning deposits	195,700	200,671
Other short-term investments	1,319	7,152
Total	264,706	266,038
Federal Funds Sold, Securities Purchased under Resale Agreements and Other Short-Term Investments Textual [Abstract]
Unfunded contractual commitments	1,600	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	$ 20,700	$ 21,300

Investment Securities, Major Ca

Investment Securities, Major Categories (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale securities:
Amortized Cost	$ 268,090	$ 310,153
Gross unrealized gains	3,692	3,618
Gross unrealized losses	(2,580)	(5,407)
Fair value	269,202	308,364
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	140,392	99,583
Gross unrealized gains	894	599
Gross unrealized losses	(896)	(1,027)
Held-to-maturity, at fair value	140,390	99,155
Total investment securities:
Amortized Cost	408,482	409,736
Gross unrealized gains	4,586	4,217
Gross unrealized losses	(3,476)	(6,434)
Fair value	409,592	407,519
Held-to-maturity, at fair value	140,390	99,155
Collateralized Debt Obligations [Member]
Available-for-sale securities:
Amortized Cost	923	819
Fair value	998	847
Asset-backed Securities, Securitized Loans and Receivables [Member]
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	345	1,300
Held-to-maturity, at fair value	345	1,300
Total investment securities:
Held-to-maturity, at fair value	345	1,300
Asset-backed Securities Collateralized by Dealer Floorplan Loans [Member]
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	500	1,100
Held-to-maturity, at fair value	501	1,100
Total investment securities:
Held-to-maturity, at fair value	501	1,100
Total debt securities [Member]
Available-for-sale securities:
Amortized Cost	267,476	309,447
Gross unrealized gains	3,271	3,102
Gross unrealized losses	(2,573)	(5,396)
Fair value	268,174	307,153
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	140,392	99,583
Held-to-maturity, at fair value	140,390	99,155
Total investment securities:
Held-to-maturity, at fair value	140,390	99,155
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Amortized Cost	17,950	25,874
Gross unrealized gains	11	54
Gross unrealized losses	(65)	(109)
Fair value	17,896	25,819
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	44,704	44,690
Gross unrealized gains	666	466
Gross unrealized losses	(35)	(77)
Held-to-maturity, at fair value	45,335	45,079
Total investment securities:
Held-to-maturity, at fair value	45,335	45,079
Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Amortized Cost	52,237	52,121
Gross unrealized gains	751	551
Gross unrealized losses	(975)	(1,571)
Fair value	52,013	51,101
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	6,325	6,336
Gross unrealized gains	60	17
Gross unrealized losses	(55)	(144)
Held-to-maturity, at fair value	6,330	6,209
Total investment securities:
Held-to-maturity, at fair value	6,330	6,209
Mortgage-backed securities: [Member]
Available-for-sale securities:
Amortized Cost	148,512	179,363
Gross unrealized gains	1,623	1,725
Gross unrealized losses	(1,425)	(3,540)
Fair value	148,710	177,548
Federal agencies [Member]
Available-for-sale securities:
Amortized Cost	136,336	163,513
Gross unrealized gains	1,009	1,175
Gross unrealized losses	(1,407)	(3,458)
Fair value	135,938	161,230
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	87,525	45,161
Gross unrealized gains	162	100
Gross unrealized losses	(806)	(804)
Held-to-maturity, at fair value	86,881	44,457
Total investment securities:
Held-to-maturity, at fair value	86,881	44,457
Residential [Member]
Available-for-sale securities:
Amortized Cost	6,829	7,375
Gross unrealized gains	532	449
Gross unrealized losses	(2)	(8)
Fair value	7,359	7,816
Commercial [Member]
Available-for-sale securities:
Amortized Cost	5,347	8,475
Gross unrealized gains	82	101
Gross unrealized losses	(16)	(74)
Fair value	5,413	8,502
Corporate debt securities [Member]
Available-for-sale securities:
Amortized Cost	9,261	11,186
Gross unrealized gains	424	381
Gross unrealized losses	(83)	(110)
Fair value	9,602	11,457
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Amortized Cost	33,168	34,764
Gross unrealized gains	298	287
Gross unrealized losses	(11)	(31)
Fair value	33,455	35,020
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	993	1,065
Gross unrealized gains	5	6
Gross unrealized losses	0	(1)
Held-to-maturity, at fair value	998	1,070
Total investment securities:
Held-to-maturity, at fair value	998	1,070
Other [Member]
Available-for-sale securities:
Amortized Cost	6,348	6,139
Gross unrealized gains	164	104
Gross unrealized losses	(14)	(35)
Fair value	6,498	6,208
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	845	2,331
Gross unrealized gains	1	10
Gross unrealized losses	0	(1)
Held-to-maturity, at fair value	846	2,340
Total investment securities:
Held-to-maturity, at fair value	846	2,340
Total marketable equity securities [Member]
Available-for-sale securities:
Amortized Cost	614	706
Gross unrealized gains	421	516
Gross unrealized losses	(7)	(11)
Fair value	1,028	1,211
Perpetual preferred securities [Member]
Available-for-sale securities:
Amortized Cost	446	445
Gross unrealized gains	23	35
Gross unrealized losses	(4)	(11)
Fair value	465	469
Other marketable equity securities [Member]
Available-for-sale securities:
Amortized Cost	168	261
Gross unrealized gains	398	481
Gross unrealized losses	(3)	0
Fair value	$ 563	$ 742

Investment Securities, Gross Un

Investment Securities, Gross Unrealized Losses and Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	$ (1,394)	$ (3,860)
Less than 12 months, Fair value, available-for-sale	102,574	154,806
12 months or more, Gross unrealized losses, available-for-sale	(1,186)	(1,547)
12 months or more, Fair value, available-for-sale	28,987	27,362
Total, Gross unrealized losses, available-for-sale	(2,580)	(5,407)
Total, Fair value, available-for-sale	131,561	182,168
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(896)	(1,025)
Less than 12 months, Fair value, held-to-maturity	70,081	51,317
12 months or more, Gross unrealized losses, held-to-maturity	0	(2)
12 months or more, Fair value, held-to-maturity	0	899
Total, Gross unrealized losses, held-to-maturity	(896)	(1,027)
Total, Fair value, held-to-maturity	70,081	52,216
Total investment securities:
Less than 12 months, Gross unrealized losses, investment securities	(2,290)	(4,885)
Less than 12 months, Fair value, investment securities	172,655	206,123
12 months or more, Gross unrealized losses, investment securities	(1,186)	(1,549)
12 months or more, Fair value, investment securities	28,987	28,261
Total, Gross unrealized losses, investment securities	(3,476)	(6,434)
Total, Fair value, investment securities	201,642	234,384
Total debt securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(1,390)	(3,857)
Less than 12 months, Fair value, available-for-sale	102,532	154,765
12 months or more, Gross unrealized losses, available-for-sale	(1,183)	(1,539)
12 months or more, Fair value, available-for-sale	28,937	27,317
Total, Gross unrealized losses, available-for-sale	(2,573)	(5,396)
Total, Fair value, available-for-sale	131,469	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	(65)	(109)
Less than 12 months, Fair value, available-for-sale	11,486	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	(65)	(109)
Total, Fair value, available-for-sale	11,486	10,816
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(35)	(77)
Less than 12 months, Fair value, held-to-maturity	3,347	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	(35)	(77)
Total, Fair value, held-to-maturity	3,347	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	(38)	(341)
Less than 12 months, Fair value, available-for-sale	8,048	17,412
12 months or more, Gross unrealized losses, available-for-sale	(937)	(1,230)
12 months or more, Fair value, available-for-sale	19,964	16,213
Total, Gross unrealized losses, available-for-sale	(975)	(1,571)
Total, Fair value, available-for-sale	28,012	33,625
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(55)	(144)
Less than 12 months, Fair value, held-to-maturity	3,624	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	(55)	(144)
Total, Fair value, held-to-maturity	3,624	4,871
Mortgage-backed securities: [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(1,274)	(3,385)
Less than 12 months, Fair value, available-for-sale	78,573	122,721
12 months or more, Gross unrealized losses, available-for-sale	(151)	(155)
12 months or more, Fair value, available-for-sale	6,648	5,416
Total, Gross unrealized losses, available-for-sale	(1,425)	(3,540)
Total, Fair value, available-for-sale	85,221	128,137
Federal agencies [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(1,271)	(3,338)
Less than 12 months, Fair value, available-for-sale	78,114	120,735
12 months or more, Gross unrealized losses, available-for-sale	(136)	(120)
12 months or more, Fair value, available-for-sale	5,900	3,481
Total, Gross unrealized losses, available-for-sale	(1,407)	(3,458)
Total, Fair value, available-for-sale	84,014	124,216
Held-to-maturity securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	(806)	(804)
Less than 12 months, Fair value, held-to-maturity	63,110	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	(806)	(804)
Total, Fair value, held-to-maturity	63,110	40,095
Residential [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(1)	(4)
Less than 12 months, Fair value, available-for-sale	90	527
12 months or more, Gross unrealized losses, available-for-sale	(1)	(4)
12 months or more, Fair value, available-for-sale	78	245
Total, Gross unrealized losses, available-for-sale	(2)	(8)
Total, Fair value, available-for-sale	168	772
Commercial [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(2)	(43)
Less than 12 months, Fair value, available-for-sale	369	1,459
12 months or more, Gross unrealized losses, available-for-sale	(14)	(31)
12 months or more, Fair value, available-for-sale	670	1,690
Total, Gross unrealized losses, available-for-sale	(16)	(74)
Total, Fair value, available-for-sale	1,039	3,149
Corporate debt securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(9)	(11)
Less than 12 months, Fair value, available-for-sale	655	946
12 months or more, Gross unrealized losses, available-for-sale	(74)	(99)
12 months or more, Fair value, available-for-sale	665	1,229
Total, Gross unrealized losses, available-for-sale	(83)	(110)
Total, Fair value, available-for-sale	1,320	2,175
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(1)	(2)
Less than 12 months, Fair value, available-for-sale	3,327	1,899
12 months or more, Gross unrealized losses, available-for-sale	(10)	(29)
12 months or more, Fair value, available-for-sale	682	3,197
Total, Gross unrealized losses, available-for-sale	(11)	(31)
Total, Fair value, available-for-sale	4,009	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	(3)	(9)
Less than 12 months, Fair value, available-for-sale	443	971
12 months or more, Gross unrealized losses, available-for-sale	(11)	(26)
12 months or more, Fair value, available-for-sale	978	1,262
Total, Gross unrealized losses, available-for-sale	(14)	(35)
Total, Fair value, available-for-sale	1,421	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	0	(1)
12 months or more, Fair value, held-to-maturity	0	633
Total, Gross unrealized losses, held-to-maturity	0	(1)
Total, Fair value, held-to-maturity	0	633
Total marketable equity securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(4)	(3)
Less than 12 months, Fair value, available-for-sale	42	41
12 months or more, Gross unrealized losses, available-for-sale	(3)	(8)
12 months or more, Fair value, available-for-sale	50	45
Total, Gross unrealized losses, available-for-sale	(7)	(11)
Total, Fair value, available-for-sale	92	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	32	41
12 months or more, Gross unrealized losses, available-for-sale	(3)	(8)
12 months or more, Fair value, available-for-sale	50	45
Total, Gross unrealized losses, available-for-sale	(4)	(11)
Total, Fair value, available-for-sale	82	86
Other marketable equity securities [Member]
Available-for-sale securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(3)	0
Less than 12 months, Fair value, available-for-sale	10	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	(3)	0
Total, Fair value, available-for-sale	$ 10	$ 0

Investment Securities, Unrealiz

Investment Securities, Unrealized Loss Position, by Credit Rating (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale securities:
Gross unrealized losses	$ (2,580)	$ (5,407)
Fair value	269,202	308,364
Held-to-maturity securities:
Gross unrealized losses	(896)	(1,027)
Fair value	140,390	99,155
Total investment securities:
Gross unrealized losses	(3,476)	(6,434)
Fair value	409,592	407,519
Total debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(2,573)	(5,396)
Fair value	268,174	307,153
Held-to-maturity securities:
Fair value	140,390	99,155
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(65)	(109)
Fair value	17,896	25,819
Held-to-maturity securities:
Gross unrealized losses	(35)	(77)
Fair value	45,335	45,079
Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Gross unrealized losses	(975)	(1,571)
Fair value	52,013	51,101
Held-to-maturity securities:
Gross unrealized losses	(55)	(144)
Fair value	6,330	6,209
Mortgage-backed securities: [Member]
Available-for-sale securities:
Gross unrealized losses	(1,425)	(3,540)
Fair value	148,710	177,548
Federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(1,407)	(3,458)
Fair value	135,938	161,230
Held-to-maturity securities:
Gross unrealized losses	(806)	(804)
Fair value	86,881	44,457
Residential [Member]
Available-for-sale securities:
Gross unrealized losses	(2)	(8)
Fair value	7,359	7,816
Commercial [Member]
Available-for-sale securities:
Gross unrealized losses	(16)	(74)
Fair value	5,413	8,502
Corporate debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(83)	(110)
Fair value	9,602	11,457
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Gross unrealized losses	(11)	(31)
Fair value	33,455	35,020
Held-to-maturity securities:
Gross unrealized losses	0	(1)
Fair value	998	1,070
Other [Member]
Available-for-sale securities:
Gross unrealized losses	(14)	(35)
Fair value	6,498	6,208
Held-to-maturity securities:
Gross unrealized losses	0	(1)
Fair value	846	2,340
Total marketable equity securities [Member]
Available-for-sale securities:
Gross unrealized losses	(7)	(11)
Fair value	1,028	1,211
Perpetual preferred securities [Member]
Available-for-sale securities:
Gross unrealized losses	(4)	(11)
Fair value	465	469
Unrated Investment Grade Securities [Member]
Total investment securities:
Gross unrealized losses	(32)	(54)
Fair value	6,600	7,000
Investment grade [Member]
Available-for-sale securities:
Gross unrealized losses	(2,446)	(5,202)
Fair value	129,621	179,308
Held-to-maturity securities:
Gross unrealized losses	(895)	(1,026)
Fair value	70,046	52,199
Total investment securities:
Gross unrealized losses	(3,341)	(6,228)
Fair value	199,667	231,507
Investment grade [Member] | Total debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(2,443)	(5,192)
Fair value	129,558	179,240
Investment grade [Member] | Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(65)	(109)
Fair value	11,486	10,816
Held-to-maturity securities:
Gross unrealized losses	(35)	(77)
Fair value	3,347	6,351
Investment grade [Member] | Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Gross unrealized losses	(932)	(1,517)
Fair value	27,640	33,271
Held-to-maturity securities:
Gross unrealized losses	(55)	(144)
Fair value	3,624	4,871
Investment grade [Member] | Mortgage-backed securities: [Member]
Available-for-sale securities:
Gross unrealized losses	(1,411)	(3,474)
Fair value	84,796	126,977
Investment grade [Member] | Federal agencies [Member]
Available-for-sale securities:
Gross unrealized losses	(1,407)	(3,458)
Fair value	84,014	124,216
Held-to-maturity securities:
Gross unrealized losses	(805)	(803)
Fair value	63,075	40,078
Investment grade [Member] | Residential [Member]
Available-for-sale securities:
Gross unrealized losses	(1)	(1)
Fair value	54	176
Investment grade [Member] | Commercial [Member]
Available-for-sale securities:
Gross unrealized losses	(3)	(15)
Fair value	728	2,585
Investment grade [Member] | Corporate debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(14)	(31)
Fair value	630	1,238
Investment grade [Member] | Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Gross unrealized losses	(11)	(31)
Fair value	4,009	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	(10)	(30)
Fair value	997	1,842
Held-to-maturity securities:
Gross unrealized losses	0	(1)
Fair value	0	633
Investment grade [Member] | Perpetual preferred securities [Member]
Available-for-sale securities:
Gross unrealized losses	(3)	(10)
Fair value	63	68
Non-investment grade [Member]
Available-for-sale securities:
Gross unrealized losses	(131)	(205)
Fair value	1,930	2,860
Held-to-maturity securities:
Gross unrealized losses	(1)	(1)
Fair value	35	17
Total investment securities:
Gross unrealized losses	(132)	(206)
Fair value	1,965	2,877
Non-investment grade [Member] | Total debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(130)	(204)
Fair value	1,911	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	(43)	(54)
Fair value	372	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	(14)	(66)
Fair value	425	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	35	17
Non-investment grade [Member] | Residential [Member]
Available-for-sale securities:
Gross unrealized losses	(1)	(7)
Fair value	114	596
Non-investment grade [Member] | Commercial [Member]
Available-for-sale securities:
Gross unrealized losses	(13)	(59)
Fair value	311	564
Non-investment grade [Member] | Corporate debt securities [Member]
Available-for-sale securities:
Gross unrealized losses	(69)	(79)
Fair value	690	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	(4)	(5)
Fair value	424	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	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 268,174	$ 307,153
Weighted average yield contractual maturities, Total, available-for-sale	3.60%	3.44%
Due within 1 year, Contractual maturities, available-for-sale	$ 13,329	$ 6,418
Percentage of weighted average yield, Due within 1 year, available-for-sale	1.40%	1.93%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 20,441	$ 37,442
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	2.88%	2.20%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 33,455	$ 31,202
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.15%	3.17%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 200,949	$ 232,091
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.90%	3.72%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 140,392	$ 99,583
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	140,390	99,155
Total debt securities [Member]
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 140,392	$ 99,583
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.92%	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	$ 33,186	$ 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	$ 13,933	$ 14,883
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.52%	2.43%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 93,273	$ 51,037
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	3.29%	3.55%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 140,390	$ 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	33,644	34,025
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	14,118	14,918
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	92,628	50,212
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 17,896	$ 25,819
Weighted average yield contractual maturities, Total, available-for-sale	1.25%	1.44%
Due within 1 year, Contractual maturities, available-for-sale	$ 10,987	$ 1,328
Percentage of weighted average yield, Due within 1 year, available-for-sale	1.04%	0.92%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 5,883	$ 23,477
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	1.55%	1.45%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 1,026	$ 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	$ 44,704	$ 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	$ 32,317	$ 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	$ 12,387	$ 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	$ 45,335	$ 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	32,774	32,313
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	12,561	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	$ 52,013	$ 51,101
Weighted average yield contractual maturities, Total, available-for-sale	5.77%	5.65%
Due within 1 year, Contractual maturities, available-for-sale	$ 1,251	$ 2,990
Percentage of weighted average yield, Due within 1 year, available-for-sale	2.25%	1.69%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 10,536	$ 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	$ 2,511	$ 2,391
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	4.59%	4.71%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 37,715	$ 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	$ 6,325	$ 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	$ 553	$ 436
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	6.61%	6.76%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 5,748	$ 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	$ 6,330	$ 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	559	430
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	5,747	5,755
Mortgage-backed securities: [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 148,710	$ 177,548
Weighted average yield contractual maturities, Total, available-for-sale	3.25%	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	4.93%	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 152	$ 153
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	3.42%	3.34%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 5,909	$ 5,428
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.93%	3.16%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 142,648	$ 171,967
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.27%	3.19%
Federal agencies [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 135,938	$ 161,230
Weighted average yield contractual maturities, Total, available-for-sale	3.18%	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	4.93%	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 127	$ 128
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	3.01%	2.98%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 5,845	$ 5,363
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.93%	3.16%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 129,965	$ 155,739
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.19%	3.09%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 87,525	$ 45,161
Weighted average yield contractual maturities, Total, held-to-maturity, cost	3.11%	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	$ 87,525	$ 45,161
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	3.11%	3.23%
Held-to-maturity securities, fair value: [Abstract]
Contractual maturities, Total amount, held-to-maturity, fair value	$ 86,881	$ 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	86,881	44,457
Residential [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 7,359	$ 7,816
Weighted average yield contractual maturities, Total, available-for-sale	3.90%	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	$ 25	$ 25
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	5.55%	5.21%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 19	$ 35
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.76%	4.34%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 7,315	$ 7,756
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.89%	3.83%
Commercial [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 5,413	$ 8,502
Weighted average yield contractual maturities, Total, available-for-sale	4.18%	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	$ 45	$ 30
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.90%	3.13%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 5,368	$ 8,472
Percentage of weighted average yield, Due after 10 years, available-for-sale	4.19%	4.59%
Corporate debt securities [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 9,602	$ 11,457
Weighted average yield contractual maturities, Total, available-for-sale	4.95%	4.81%
Due within 1 year, Contractual maturities, available-for-sale	$ 1,050	$ 2,043
Percentage of weighted average yield, Due within 1 year, available-for-sale	4.13%	2.90%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 2,945	$ 3,374
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	5.69%	5.89%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 4,638	$ 4,741
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	4.62%	4.71%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 969	$ 1,299
Percentage of weighted average yield, Due after 10 years, available-for-sale	5.23%	5.38%
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 33,455	$ 35,020
Weighted average yield contractual maturities, Total, available-for-sale	2.89%	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	$ 146	$ 168
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	2.10%	1.34%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 17,739	$ 16,482
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.82%	2.66%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 15,570	$ 18,370
Percentage of weighted average yield, Due after 10 years, available-for-sale	2.99%	2.74%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 993	$ 1,065
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.72%	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	$ 993	$ 1,065
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.72%	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	$ 998	$ 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	998	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	$ 6,498	$ 6,208
Weighted average yield contractual maturities, Total, available-for-sale	2.32%	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	3.24%	3.06%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 779	$ 971
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	2.54%	2.35%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 1,632	$ 1,146
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	1.91%	2.04%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 4,047	$ 4,034
Percentage of weighted average yield, Due after 10 years, available-for-sale	2.43%	2.17%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 845	$ 2,331
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.03%	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	$ 845	$ 1,683
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	2.03%	1.81%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 0	$ 648
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	0.00%	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	$ 846	$ 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	846	1,688
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	0	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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Marketable Securities, Realized Gain (Loss) [Abstract]
Gross realized gains	$ 320	$ 564	$ 561	$ 949
Gross realized losses	(48)	(31)	(84)	(44)
OTTI write-downs	(51)	(26)	(104)	(95)
Net realized gains from available-for-sale securities	221	507	373	810
Net realized gains from nonmarketable equity investments	87	129	374	314
Net realized gains from debt securities and equity investments	$ 308	$ 636	$ 747	$ 1,124

Investment Securities, OTTI Inc

Investment Securities, OTTI Included in Earnings (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 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)	$ 51	$ 26	104	95
Nonmarketable equity investments (1)	22	104	98	233
Total OTTI write-downs included in earnings (1)	73	130	202	328
Total debt securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	48	26	100	91
Securities of U.S. states and political subdivisions [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	0	6	8	10
Residential [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	3	12	6	24
Commercial [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	41	0	66	1
Corporate debt securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	4	5	20	50
Other [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	0	3	0	6
Total marketable equity securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	3	0	4	4
Other marketable equity securities [Member]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	3	0	4	4
Energy [Domain]
OTTI write-downs included in earnings (Abstract)
Total investment securities (1)	7	5	22	51
Nonmarketable equity investments (1)	12	24	36	102
Total OTTI write-downs included in earnings (1)	$ 19	$ 29	$ 58	$ 153

Investment Securities, OTTI Deb

Investment Securities, OTTI Debt Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	$ 51	$ 26	$ 104	$ 95
Total debt securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	48	26	100	91
Total changes to OCI for non-credit-related OTTI	(42)	(15)	(51)	(4)
Total OTTI losses recorded on debt securities	6	11	49	87
Total debt securities [Member] | Credit-related OTTI [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	47	20	99	81
Total debt securities [Member] | Intent-to-sell OTTI [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	1	6	1	10
Securities of U.S. states and political subdivisions [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	0	6	8	10
Total changes to OCI for non-credit-related OTTI	0	0	(5)	0
Residential [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	3	12	6	24
Total changes to OCI for non-credit-related OTTI	(3)	(5)	0	5
Commercial Mortgage Backed Securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	41	0	66	1
Total changes to OCI for non-credit-related OTTI	(40)	(1)	(47)	2
Corporate debt securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	4	5	20	50
Total changes to OCI for non-credit-related OTTI	1	(9)	1	(13)
Other debt securities
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	0	3	0	6
Total changes to OCI for non-credit-related OTTI	$ 0	$ 0	$ 0	$ 2

Investment Securities, Credit L

Investment Securities, Credit Loss Component (Details) - Total debt securities [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Credit loss recognized, beginning of period	$ 1,086	$ 1,145	$ 1,043	$ 1,092
Additions:
For securities with initial credit impairments	2	0	8	38
For securities with previous credit impairments	45	20	91	43
Total additions	47	20	99	81
Reductions:
For securities sold, matured, or intended/required to be sold	(11)	(83)	(18)	(89)
For recoveries of previous credit impairments	(2)	(2)	(4)	(4)
Total reductions	(13)	(85)	(22)	(93)
Credit loss recognized, end of period	$ 1,120	$ 1,080	$ 1,120	$ 1,080

Loans and Allowance for Credi58

Loans and Allowance for Credit Losses, Loans Outstanding (Details) - USD ($) $ in Millions		Jun. 30, 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		3,900	4,400
Loans	[1]	957,423	967,604
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		505,901	506,536
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		331,113	330,840
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		130,277	132,491
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		25,337	23,916
Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		19,174	19,289
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		451,522	461,068
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		276,566	275,579
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		42,747	46,237
Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		35,305	36,700
Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		57,958	62,286
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		38,946	40,266
Geographic Distribution, Foreign [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		67,861	65,284
Geographic Distribution, Foreign [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		57,825	55,396
Geographic Distribution, Foreign [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		8,359	8,541
Geographic Distribution, Foreign [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		585	375
Geographic Distribution, Foreign [Member] | Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		1,092	972
International [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Letters of Credit Outstanding, Amount		$ 1,300	$ 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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	$ 810	$ 2,607	$ 1,971	$ 27,253
Sales	(1,136)	(792)	(1,485)	(1,287)
Transfers to MHFS/LHFS	(180)	(70)	(659)	(105)
Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	810	2,607	1,969	27,253
Sales	(1,052)	(385)	(1,339)	(608)
Transfers to MHFS/LHFS	(179)	(69)	(658)	(101)
Consumer Portfolio Segment [Member]
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	0	0	2	0
Sales	(84)	(407)	(146)	(679)
Transfers to MHFS/LHFS	$ (1)	$ (1)	$ (1)	$ (4)

Loans and Allowance for Credi60

Loans and Allowance for Credit Losses, Commitments to Lend (Details) - USD ($) $ in Millions	Jun. 30, 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	552,997	551,524
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	319,058	319,662
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	7,601	7,833
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	16,728	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	343,398	346,351
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	209,599	205,173
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	35,685	33,498
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	40,044	41,431
Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	106,329	101,895
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	27,541	28,349
International [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Letters of Credit International	$ 1,300	$ 1,100

Loans and Allowance for Credi61

Loans and Allowance for Credit Losses, Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 12,287	$ 12,668	$ 12,540	$ 12,512
Provision for credit losses	555	1,074	1,160	2,160
Interest income on certain impaired loans	(46)	(51)	(94)	(99)
Loan charge-offs	(1,075)	(1,373)	(2,313)	(2,699)
Loan recoveries	420	449	853	889
Net loan charge-offs	(655)	(924)	(1,460)	(1,810)
Other	5	(18)	0	(14)
Allowance for credit losses, ending balance	12,146	12,749	12,146	12,749
Components:
Allowance for loan losses					$ 11,073	$ 11,419	$ 11,664
Allowance for unfunded credit commitments					1,073		1,085
Total allowance for credit losses	$ 12,287	$ 12,668	$ 12,540	$ 12,512	$ 12,146	12,540	$ 12,749
Net loan charge-offs (annualized) as a percentage of average total loans	0.27%	0.39%	0.31%	0.39%
Allowance for loan losses as a percentage of total loans					1.16%		1.22%
Allowance for credit losses as a percentage of total loans					1.27%		1.33%
Total Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 7,142	$ 7,348	$ 7,394	$ 6,872
Provision for credit losses	(97)	478	(186)	1,192
Interest income on certain impaired loans	(14)	(10)	(29)	(15)
Loan charge-offs	(182)	(458)	(447)	(814)
Loan recoveries	107	101	229	220
Net loan charge-offs	(75)	(357)	(218)	(594)
Other	5	(18)	0	(14)
Allowance for credit losses, ending balance	6,961	7,441	6,961	7,441
Components:
Total allowance for credit losses	7,142	7,348	7,394	6,872	$ 6,961	7,394	$ 7,441
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(161)	(437)	(414)	(786)
Loan recoveries	83	69	165	145
Commercial real estate mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(8)	(3)	(13)	(6)
Loan recoveries	14	23	44	55
Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	0	(1)	0	(1)
Loan recoveries	4	4	12	12
Commercial Lease Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(13)	(17)	(20)	(21)
Loan recoveries	6	5	8	8
Total Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	5,145	5,320	5,146	5,640
Provision for credit losses	652	596	1,346	968
Interest income on certain impaired loans	(32)	(41)	(65)	(84)
Loan charge-offs	(893)	(915)	(1,866)	(1,885)
Loan recoveries	313	348	624	669
Net loan charge-offs	(580)	(567)	(1,242)	(1,216)
Other	0	0	0	0
Allowance for credit losses, ending balance	5,185	5,308	5,185	5,308
Components:
Total allowance for credit losses	5,145	5,320	5,146	5,640	$ 5,185	$ 5,146	$ 5,308
Real estate 1-4 family first mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(55)	(123)	(124)	(260)
Loan recoveries	71	109	133	198
Real estate 1-4 family junior lien mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(62)	(133)	(155)	(266)
Loan recoveries	66	71	136	130
Credit Card [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(379)	(320)	(746)	(634)
Loan recoveries	59	50	117	102
Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(212)	(176)	(467)	(387)
Loan recoveries	86	86	174	170
Other revolving credit and installment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(185)	(163)	(374)	(338)
Loan recoveries	$ 31	$ 32	$ 64	$ 69

Loans and Allowance for Credi62

Loans and Allowance for Credit Losses, Allowance Activity by Portfolio Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 12,287	$ 12,668	$ 12,540	$ 12,512
Provision for credit losses	555	1,074	1,160	2,160
Interest income on certain impaired loans	(46)	(51)	(94)	(99)
Loan charge-offs	(1,075)	(1,373)	(2,313)	(2,699)
Loan recoveries	420	449	853	889
Net loan charge-offs	(655)	(924)	(1,460)	(1,810)
Other	5	(18)	0	(14)
Allowance for credit losses, ending balance	12,146	12,749	12,146	12,749
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	7,142	7,348	7,394	6,872
Provision for credit losses	(97)	478	(186)	1,192
Interest income on certain impaired loans	(14)	(10)	(29)	(15)
Loan charge-offs	(182)	(458)	(447)	(814)
Loan recoveries	107	101	229	220
Net loan charge-offs	(75)	(357)	(218)	(594)
Other	5	(18)	0	(14)
Allowance for credit losses, ending balance	6,961	7,441	6,961	7,441
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	5,145	5,320	5,146	5,640
Provision for credit losses	652	596	1,346	968
Interest income on certain impaired loans	(32)	(41)	(65)	(84)
Loan charge-offs	(893)	(915)	(1,866)	(1,885)
Loan recoveries	313	348	624	669
Net loan charge-offs	(580)	(567)	(1,242)	(1,216)
Other	0	0	0	0
Allowance for credit losses, ending balance	$ 5,185	$ 5,308	$ 5,185	$ 5,308

Loans and Allowance for Credi63

Loans and Allowance for Credit Losses, Allowance by Credit Impairment Methodology (Details) - USD ($) $ in Millions		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		$ 9,975		$ 9,945
Allowance for Credit Losses, Individually evaluated		2,171		2,593
Total allowance for credit losses		12,146	$ 12,287	12,540	$ 12,749	$ 12,668	$ 12,512
Financing Receivable, Collectively evaluated		922,588		928,496
Financing Receivable, Individually evaluated		20,562		22,377
Loans	[1]	957,423		967,604
Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		6,131		6,392
Allowance for Credit Losses, Individually evaluated		830		1,000
Total allowance for credit losses		6,961	7,142	7,394	7,441	7,348	6,872
Financing Receivable, Collectively evaluated		500,942		500,487
Financing Receivable, Individually evaluated		4,696		5,372
Loans		505,901		506,536
Consumer Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		3,844		3,553
Allowance for Credit Losses, Individually evaluated		1,341		1,593
Total allowance for credit losses		5,185	$ 5,145	5,146	$ 5,308	$ 5,320	$ 5,640
Financing Receivable, Collectively evaluated		421,646		428,009
Financing Receivable, Individually evaluated		15,866		17,005
Loans		451,522		461,068
PCI Loans Carrying Value [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Financing Receivable, Recorded Investment, Current		14,273		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		263		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		14,010		16,054
Allowance for Doubtful Accounts [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Total allowance for credit losses		0		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		0		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		Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2008
Loans and Leases Receivable Disclosure [Abstract]
Loans	[1]	$ 957,423	$ 967,604
Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		505,901	506,536
Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		331,113	330,840
Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		130,277	132,491
Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		25,337	23,916
Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		19,174	19,289
Loans Excluding Purchased Credit-Impaired Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status		9,056	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		5,200
Financing Receivable, Recorded Investment, Nonaccrual Status		664
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		505,638	505,859
Financing Receivable, Recorded Investment, Nonaccrual Status		3,385	4,059
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		480,229	476,266
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		25,409	29,593
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		330,982	330,603
Financing Receivable, Recorded Investment, Nonaccrual Status		2,632	3,216
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		311,963	308,166
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		19,019	22,437
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		130,158	132,108
Financing Receivable, Recorded Investment, Nonaccrual Status		630	685
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		125,283	126,793
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		4,875	5,315
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		25,324	23,859
Financing Receivable, Recorded Investment, Nonaccrual Status		34	43
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		25,013	23,408
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		311	451
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		19,174	19,289
Financing Receivable, Recorded Investment, Nonaccrual Status		89	115
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		17,970	17,899
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		1,204	1,390
PCI Loans Carrying Value [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		14,273	16,731
PCI Loans Carrying Value [Member] | Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		263	677	$ 18,700
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		131	237
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		119	383
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		13	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		Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2008
By delinquency status:
Loans	[1]	$ 957,423	$ 967,604
Total Commercial [Member]
By delinquency status:
Loans		505,901	506,536
Commercial and Industrial Loans [Member]
By delinquency status:
Loans		331,113	330,840
Commercial real estate mortgage [Member]
By delinquency status:
Loans		130,277	132,491
Commercial Real Estate Construction [Member]
By delinquency status:
Loans		25,337	23,916
Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		19,174	19,289
Loans Excluding Purchased Credit-Impaired Loans [Member]
By delinquency status:
Over 90 DPD and still accruing		9,716	11,858
Nonaccrual loans		9,056	10,384
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		505,638	505,859
Over 90 DPD and still accruing		54	64
Nonaccrual loans		3,385	4,059
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		330,982	330,603
Over 90 DPD and still accruing		42	28
Nonaccrual loans		2,632	3,216
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		130,158	132,108
Over 90 DPD and still accruing		2	36
Nonaccrual loans		630	685
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		25,324	23,859
Over 90 DPD and still accruing		10	0
Nonaccrual loans		34	43
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		19,174	19,289
Over 90 DPD and still accruing		0	0
Nonaccrual loans		89	115
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans		14,273	16,731
PCI Loans Carrying Value [Member] | Total Commercial [Member]
By delinquency status:
PCI loans		263	677	$ 18,700
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
PCI loans		131	237
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
By delinquency status:
PCI loans		119	383
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
PCI loans		13	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		480,229	476,266
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		311,963	308,166
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		125,283	126,793
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		25,013	23,408
Pass [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		17,970	17,899
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		25,409	29,593
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		19,019	22,437
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		4,875	5,315
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		311	451
Criticized [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		1,204	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		501,092	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		327,614	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		129,360	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		25,148	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		18,970	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		1,107	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		694	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		166	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		132	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		$ 115	$ 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		Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2008
By delinquency status:
Loans	[1]	$ 957,423	$ 967,604
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		789	908
By delinquency status:
Loans		$ 451,522	$ 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		0.50%	0.60%
Loans		$ 276,566	$ 275,579
Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		42,747	46,237
Credit Card [Member]
By delinquency status:
Loans		35,305	36,700
Automobile [Member]
By delinquency status:
Loans		57,958	62,286
Other revolving credit and installment [Member]
By delinquency status:
Loans		38,946	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		9,716	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		8,873	10,883
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		437,512	445,014
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		262,587	259,561
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		42,716	46,201
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		35,305	36,700
Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		57,958	62,286
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		38,946	40,266
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans		14,273	16,731
PCI Loans Carrying Value [Member] | Total Consumer [Member]
By delinquency status:
PCI loans		14,010	16,054	$ 40,100
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans		13,979	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans		31	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		8,500	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		3,000	3,500
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		416,244	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		244,862	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		41,866	45,238
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		34,455	35,773
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		56,470	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		38,591	39,833
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		3,349	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		1,607	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		273	296
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		254	275
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		1,085	1,262
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		130	177
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		1,359	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		637	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		151	160
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		185	200
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		298	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		88	111
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		671	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		269	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		81	102
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		142	169
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		100	116
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		79	93
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		638	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		245	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		90	108
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		268	279
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		5	5
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		30	30
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		1,662	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		1,378	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		255	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		0	1
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		28	22
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		13,589	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		13,589	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		Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2008
By FICO:
Loans	[1]	$ 957,423	$ 967,604
Total Consumer [Member]
By FICO:
Loans		451,522	461,068
90 days or more past due and still accruing		789	908
Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		276,566	275,579
Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		42,747	46,237
Credit Card [Member]
By FICO:
Loans		35,305	36,700
Automobile [Member]
By FICO:
Loans		57,958	62,286
Other revolving credit and installment [Member]
By FICO:
Loans		38,946	40,266
Loans Excluding Purchased Credit-Impaired Loans [Member]
By FICO:
90 days or more past due and still accruing		9,716	11,858
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		437,512	445,014
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		262,587	259,561
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		42,716	46,201
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		35,305	36,700
Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		57,958	62,286
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		38,946	40,266
PCI Loans Carrying Value [Member]
By FICO:
PCI loans		14,273	16,731
PCI Loans Carrying Value [Member] | Total Consumer [Member]
By FICO:
PCI loans		14,010	16,054	$ 40,100
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans		13,979	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans		31	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		21,606	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		5,767	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		1,949	2,591
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		3,282	3,475
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		9,716	9,934
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		892	976
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		15,684	18,187
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		3,917	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		1,422	1,917
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		2,932	3,109
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		6,468	6,705
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		945	1,056
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		26,219	32,937
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		7,322	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		2,689	3,747
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		5,399	5,678
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		8,741	10,204
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		2,068	2,333
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		41,462	52,649
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		15,579	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		5,269	6,432
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		7,195	7,382
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		9,676	11,233
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		3,743	4,302
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		56,369	70,515
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		28,480	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		6,756	9,413
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		7,544	7,632
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		8,282	8,769
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		5,307	5,869
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		81,279	141,240
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		54,249	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		7,792	14,929
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		6,018	6,191
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		6,739	8,164
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		6,481	8,348
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		163,675	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		127,929	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		16,015	6,391
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		2,889	2,868
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		8,098	6,856
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		8,744	6,434
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		9,471	10,086
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		5,755	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		824	781
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		46	365
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		238	421
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		2,608	2,906
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		8,158	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		8,158	8,042
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		13,589	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		13,589	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		Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
High Value Properties, Threshold		$ 1
By LTV/CLTV:
Loans	[1]	957,423	$ 967,604
Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Nonaccrual loans		9,056	10,384
Residential Mortgage [Member]
By LTV/CLTV:
Loans		319,313	321,816
Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		305,303	305,762
Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
Loans		276,566	275,579
Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		262,587	259,561
Nonaccrual loans		4,413	4,962
Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
Loans		42,747	46,237
Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		42,716	46,201
Nonaccrual loans		1,095	1,206
PCI Loans Carrying Value [Member]
By LTV/CLTV:
PCI loans		14,273	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans		13,979	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans		31	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans		14,010	16,054
LTV 0-60% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		140,200	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		124,277	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		15,923	16,464
LTV 60.01-80% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		118,001	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		104,027	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		13,974	15,262
LTV 80.01-100% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		24,056	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		16,229	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		7,827	8,765
LTV 100.01-120% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		5,492	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		2,334	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		3,158	3,589
LTV greater than 120% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		2,340	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		981	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		1,359	1,613
No LTV/CLTV available [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		1,625	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		1,150	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		475	508
Government Insured Or Guaranteed [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		13,589	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		13,589	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		Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	[1]	$ 957,423	$ 967,604
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		505,901	506,536
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		331,113	330,840
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		130,277	132,491
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		25,337	23,916
Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		19,174	19,289
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		451,522	461,068
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		276,566	275,579
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		42,747	46,237
Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		57,958	62,286
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		38,946	40,266
Residential Real Estate [Member]
Nonaccrual Loans [Abstract]
Mortgage Loans in Process of Foreclosure, Amount		7,000	8,100
Government Guaranteed Mortgage Loans upon Foreclosure Receivable [Member]
Nonaccrual Loans [Abstract]
Mortgage Loans in Process of Foreclosure, Amount		4,100	4,800
Mortgages held for sale [Member] | Real estate 1-4 family first mortgage [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans		140	149
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans		9,056	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		505,638	505,859
Nonaccrual Loans [Abstract]
Nonaccrual loans		3,385	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		330,982	330,603
Nonaccrual Loans [Abstract]
Nonaccrual loans		2,632	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		130,158	132,108
Nonaccrual Loans [Abstract]
Nonaccrual loans		630	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		25,324	23,859
Nonaccrual Loans [Abstract]
Nonaccrual loans		34	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		19,174	19,289
Nonaccrual Loans [Abstract]
Nonaccrual loans		89	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		437,512	445,014
Nonaccrual Loans [Abstract]
Nonaccrual loans		5,671	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		262,587	259,561
Nonaccrual Loans [Abstract]
Nonaccrual loans		4,413	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		42,716	46,201
Nonaccrual Loans [Abstract]
Nonaccrual loans		1,095	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		57,958	62,286
Nonaccrual Loans [Abstract]
Nonaccrual loans		104	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		38,946	40,266
Nonaccrual Loans [Abstract]
Nonaccrual loans		59	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		25,409	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		19,019	22,437
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		4,875	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		311	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		$ 1,204	$ 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	Jun. 30, 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	$ 789	$ 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	1,500	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	9,716	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	8,873	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	54	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	42	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	2	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	10	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	843	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	54	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	42	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	2	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	10	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	789	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	145	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	44	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	411	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	91	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	$ 98	$ 113

Loans and Allowance for Credi71

Loans and Allowance for Credit Losses, Impaired Loans (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Impaired Loans [Abstract]
Unpaid principal balance	$ 24,413	$ 26,547
Impaired loans	20,562	22,377
Impaired loans with related allowance for credit losses	15,074	16,604
Related allowance for credit losses	2,171	2,593
Loans and Leases Receivable, Impaired, Commitment to Lend	747	403
Trial modifications [Member]
Impaired Loans [Abstract]
Impaired loans	215	299
Consumer Real Estate Loans Government Guaranteed Or Insured [Member]
Impaired Loans [Abstract]
Impaired loans	1,400	1,500
Total Commercial [Member]
Impaired Loans [Abstract]
Unpaid principal balance	6,286	7,148
Impaired loans	4,696	5,372
Impaired loans with related allowance for credit losses	4,380	5,026
Related allowance for credit losses	830	1,000
Commercial and Industrial Loans [Member]
Impaired Loans [Abstract]
Unpaid principal balance	4,401	5,058
Impaired loans	3,205	3,742
Impaired loans with related allowance for credit losses	2,901	3,418
Related allowance for credit losses	558	675
Commercial real estate mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	1,654	1,777
Impaired loans	1,337	1,418
Impaired loans with related allowance for credit losses	1,325	1,396
Related allowance for credit losses	238	280
Commercial Real Estate Construction [Member]
Impaired Loans [Abstract]
Unpaid principal balance	105	167
Impaired loans	62	93
Impaired loans with related allowance for credit losses	62	93
Related allowance for credit losses	11	22
Commercial Lease Financing Receivable [Member]
Impaired Loans [Abstract]
Unpaid principal balance	126	146
Impaired loans	92	119
Impaired loans with related allowance for credit losses	92	119
Related allowance for credit losses	23	23
Total Consumer [Member]
Impaired Loans [Abstract]
Unpaid principal balance	18,127	19,399
Impaired loans	15,866	17,005
Impaired loans with related allowance for credit losses	10,694	11,578
Related allowance for credit losses	1,341	1,593
Real estate 1-4 family first mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	15,256	16,438
Impaired loans	13,299	14,362
Impaired loans with related allowance for credit losses	8,677	9,475
Related allowance for credit losses	905	1,117
Real estate 1-4 family junior lien mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	2,273	2,399
Impaired loans	2,043	2,156
Impaired loans with related allowance for credit losses	1,557	1,681
Related allowance for credit losses	295	350
Credit Card [Member]
Impaired Loans [Abstract]
Unpaid principal balance	317	300
Impaired loans	316	300
Impaired loans with related allowance for credit losses	316	300
Related allowance for credit losses	113	104
Automobile [Member]
Impaired Loans [Abstract]
Unpaid principal balance	152	153
Impaired loans	85	85
Impaired loans with related allowance for credit losses	31	31
Related allowance for credit losses	4	5
Other revolving credit and installment [Member]
Impaired Loans [Abstract]
Unpaid principal balance	129	109
Impaired loans	123	102
Impaired loans with related allowance for credit losses	113	91
Related allowance for credit losses	$ 24	$ 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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	$ 21,112	$ 24,781	$ 21,509	$ 24,499
Recognized interest income	292	315	587	636
Interest income:
Cash basis of accounting	77	92	155	187
Other	215	223	432	449
Total Commercial [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	4,925	5,707	5,039	5,077
Recognized interest income	62	58	123	111
Commercial and Industrial Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	3,390	3,803	3,457	3,146
Recognized interest income	36	21	69	40
Commercial real estate mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	1,371	1,695	1,397	1,730
Recognized interest income	24	34	51	66
Commercial Real Estate Construction [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	66	116	75	122
Recognized interest income	2	3	3	5
Commercial Lease Financing Receivable [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	98	93	110	79
Recognized interest income	0	0	0	0
Total Consumer [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	16,187	19,074	16,470	19,422
Recognized interest income	230	257	464	525
Real estate 1-4 family first mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	13,602	16,278	13,866	16,595
Recognized interest income	185	211	375	432
Real estate 1-4 family junior lien mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	2,075	2,325	2,103	2,354
Recognized interest income	31	33	62	67
Credit Card [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	313	293	308	295
Recognized interest income	9	8	17	17
Automobile [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	83	94	83	98
Recognized interest income	3	3	6	6
Other revolving credit and installment [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	114	84	110	80
Recognized interest income	$ 2	$ 2	$ 4	$ 3

Loans and Allowance for Credi73

Loans and Allowance for Credit Losses, Troubled Debt Restructurings Modifications by Type (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Net loans	$ 946,350		$ 946,350		$ 956,185
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,620	$ 1,564	3,319	$ 3,309
Financial effects of modifications
Charge-offs	$ 60	$ 168	$ 147	$ 306
Weighted average interest rate reduction	5.24%	3.88%	5.25%	3.88%
Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,142	$ 928	$ 2,277	$ 1,911
Financial effects of modifications
Charge-offs	$ 42	$ 137	$ 107	$ 243
Weighted average interest rate reduction	1.19%	1.70%	1.10%	1.71%
Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 944	$ 732	$ 1,878	$ 1,484
Financial effects of modifications
Charge-offs	$ 29	$ 137	$ 94	$ 243
Weighted average interest rate reduction	0.88%	2.29%	0.86%	2.02%
Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 166	$ 164	$ 361	$ 347
Financial effects of modifications
Charge-offs	$ 13	$ 0	$ 13	$ 0
Weighted average interest rate reduction	1.36%	1.30%	1.23%	1.22%
Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 21	$ 32	$ 24	$ 76
Financial effects of modifications
Charge-offs	$ 0	$ 0	$ 0	$ 0
Weighted average interest rate reduction	0.61%	1.05%	0.69%	1.05%
Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 11	$ 0	$ 14	$ 4
Financial effects of modifications
Charge-offs	$ 0	$ 0	$ 0	$ 0
Weighted average interest rate reduction	0.00%	0.00%	0.00%	0.00%
Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 478	$ 636	$ 1,042	$ 1,398
Financial effects of modifications
Charge-offs	$ 18	$ 31	$ 40	$ 63
Weighted average interest rate reduction	6.07%	4.64%	5.89%	4.79%
Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 353	$ 484	$ 790	$ 1,095
Financial effects of modifications
Charge-offs	$ 3	$ 12	$ 12	$ 25
Weighted average interest rate reduction	2.55%	2.63%	2.58%	2.72%
Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 54	$ 66	$ 111	$ 128
Financial effects of modifications
Charge-offs	$ 3	$ 11	$ 9	$ 21
Weighted average interest rate reduction	2.88%	3.11%	2.91%	3.01%
Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 57	$ 41	$ 114	$ 85
Financial effects of modifications
Charge-offs	$ 0	$ 0	$ 0	$ 0
Weighted average interest rate reduction	12.48%	11.98%	12.35%	11.96%
Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 24	$ 18	$ 40	$ 37
Financial effects of modifications
Charge-offs	$ 11	$ 8	$ 18	$ 16
Weighted average interest rate reduction	5.90%	6.40%	6.14%	6.47%
Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 17	$ 10	$ 31	$ 21
Financial effects of modifications
Charge-offs	$ 1	$ 0	$ 1	$ 1
Weighted average interest rate reduction	7.27%	6.99%	7.28%	6.53%
Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ (27)	$ 17	$ (44)	$ 32
Financial effects of modifications
Charge-offs	$ 0	$ 0	$ 0	$ 0
Weighted average interest rate reduction	0.00%	0.00%	0.00%	0.00%
Modification to principal [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 102	$ 99	$ 190	$ 243
Modification to principal [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	21	0	21	42
Modification to principal [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	17	0	17	42
Modification to principal [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	4	0	4	0
Modification to principal [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Modification to principal [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Modification to principal [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	81	99	169	201
Modification to principal [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	74	92	148	188
Modification to principal [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	7	6	20	12
Modification to principal [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Modification to principal [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	1	1	1
Modification to principal [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Modification to principal [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Contractual Interest Rate Reduction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	187	235	371	487
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	39	78	59	180
Contractual Interest Rate Reduction [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	13	35	19	113
Contractual Interest Rate Reduction [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	25	29	39	53
Contractual Interest Rate Reduction [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1	14	1	14
Contractual Interest Rate Reduction [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Contractual Interest Rate Reduction [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	148	157	312	307
Contractual Interest Rate Reduction [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	45	78	117	143
Contractual Interest Rate Reduction [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	26	27	47	56
Contractual Interest Rate Reduction [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	57	41	114	85
Contractual Interest Rate Reduction [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	4	3	7	7
Contractual Interest Rate Reduction [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	16	8	27	16
Contractual Interest Rate Reduction [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Modifications, other concessions [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,331	1,230	2,758	2,579
Modifications, other concessions [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,082	850	2,197	1,689
Modifications, other concessions [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	914	697	1,842	1,329
Modifications, other concessions [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	137	135	318	294
Modifications, other concessions [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	20	18	23	62
Modifications, other concessions [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	11	0	14	4
Modifications, other concessions [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	249	380	561	890
Modifications, other concessions [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	234	314	525	764
Modifications, other concessions [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	21	33	44	60
Modifications, other concessions [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0	0	0
Modifications, other concessions [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	20	14	32	29
Modifications, other concessions [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1	2	4	5
Modifications, other concessions [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	(27)	17	(44)	32
Modification of recorded investment related to interest rate reduction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	228	300	446	611
Modification of recorded investment related to interest rate reduction [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	39	77	59	179
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	13	35	19	113
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	25	28	39	52
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	1	14	1	14
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	0	0
Modification of recorded investment related to interest rate reduction [Member] | Consumer Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	189	223	387	432
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	83	138	186	257
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	30	33	54	67
Modification of recorded investment related to interest rate reduction [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	57	41	114	85
Modification of recorded investment related to interest rate reduction [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	4	3	7	7
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	15	8	26	16
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	0	0
Troubled Debt Restructuring Outstanding Balance [Member]
Financing Receivable, Modifications [Line Items]
Net loans	19,600		19,600		$ 20,800
Loans remodified [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	602	301	1,300	649
Principal Forgiveness [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 10	$ 19	$ 19	$ 38

Loans and Allowance for Credi74

Loans and Allowance for Credit Losses, Troubled Debt Restructurings, Current Defaults (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	$ 93	$ 103	$ 224	$ 203
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	40	52	123	99
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	30	20	92	45
Commercial real estate mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	10	31	31	51
Commercial Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	0	1	0	3
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	53	51	101	104
Real estate 1-4 family first mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	26	30	51	61
Real estate 1-4 family junior lien mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	5	4	9	9
Credit Card [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	17	13	32	26
Automobile [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	4	3	7	6
Other revolving credit and installment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	$ 1	$ 1	$ 2	$ 2

Loans and Allowance for Credi75

Loans and Allowance for Credit Losses, PCI Loans Outstanding (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2008
PCI Loans UPB [Member]
PCI loans [Abstract]
Total PCI loans (unpaid principal balance)	$ 20,928	$ 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	18,312	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	175	192
PCI Loans Carrying Value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	14,273	16,731
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	13	57
PCI Loans Carrying Value [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	263	677	18,700
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	131	237
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	13,979	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	31	36
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	119	383
PCI Loans Carrying Value [Member] | Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 14,010	$ 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		6 Months Ended		96 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Significant Sales	$ 1,136	$ 792	$ 1,485	$ 1,287
Change in accretable yield related to PCI loans [Abstract]
Total, beginning of period	10,315		11,216		$ 10,447
Change in accretable yield due to acquisitions	0		2		159
Accretion into interest income	(374)		(731)		(15,577)
Accretion into noninterest income due to sales	(309)		(334)		(467)
Reclassification from nonaccretable difference for loans with improving credit-related cash flows	0		406		10,955
Changes in expected cash flows that do not affect nonaccretable difference	(263)		(1,190)		5,699
Total, end of period	9,369		$ 9,369		$ 11,216
PCI Loans Carrying Value [Member] | Pick-A-Pay Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gain (Loss) on Sales, Net	309
Financing Receivable, Significant Sales	$ 569

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	Jun. 30, 2017	Dec. 31, 2016
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 263	$ 677
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	131	237
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	119	383
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	13	57
Pass [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	95	402
Pass [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	7	92
Pass [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	84	263
Pass [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	4	47
Criticized [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	168	275
Criticized [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	124	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	$ 9	$ 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	Jun. 30, 2017	Dec. 31, 2016
Total Commercial [Member]
By delinquency status:
Over 90 DPD and still accruing	$ 11	$ 29
PCI loans	263	677
Commercial and Industrial Loans [Member]
By delinquency status:
Over 90 DPD and still accruing	0	0
PCI loans	131	237
Commercial real estate mortgage [Member]
By delinquency status:
Over 90 DPD and still accruing	11	20
PCI loans	119	383
Commercial Real Estate Construction [Member]
By delinquency status:
Over 90 DPD and still accruing	0	9
PCI loans	13	57
Current-29 days past due (DPD) and still accruing [Member] | Total Commercial [Member]
By delinquency status:
PCI loans	250	636
Current-29 days past due (DPD) and still accruing [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
PCI loans	129	235
Current-29 days past due (DPD) and still accruing [Member] | Commercial real estate mortgage [Member]
By delinquency status:
PCI loans	108	353
Current-29 days past due (DPD) and still accruing [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
PCI loans	13	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	Jun. 30, 2017	Dec. 31, 2016
PCI Loans UPB [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	$ 18,312	$ 20,803
PCI Loans UPB [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	175	192
PCI Loans UPB [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	18,487	20,995
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans	14,273	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans	13,979	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans	31	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	14,010	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	14,524	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	158	171
Current-29 days past due (DPD) [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	14,682	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	1,229	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	5	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	1,234	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	574	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	3	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	577	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	224	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	225	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	155	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	2	2
120-179 DPD member [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	157	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	1,606	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	6	8
180 plus DPD [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By delinquency status:
PCI loans	$ 1,612	$ 2,089

Loans and Allowance for Credi80

Loans and Allowance for Credit Losses, PCI, by FICO Score, Consumer (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
PCI Loans UPB [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	$ 18,312	$ 20,803
PCI Loans UPB [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	175	192
PCI Loans UPB [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	18,487	20,995
PCI Loans Carrying Value [Member]
By FICO:
PCI loans	14,273	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	13,979	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans	31	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	14,010	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	4,450	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	42	46
FICO less than 600 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	4,492	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	2,342	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	22	26
FICO 600-639 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	2,364	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	2,599	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	30	35
FICO 640-679 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	2,629	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	2,438	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	32	37
FICO 680-719 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	2,470	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	1,845	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	25	24
FICO 720-759 [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	1,870	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	930	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	942	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	446	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	6	4
FICO 800 or more [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	452	258
No FICO available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans	3,262	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	6	5
No FICO available [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By FICO:
PCI loans	$ 3,268	$ 3,390

Loans and Allowance for Credi81

Loans and Allowance for Credit Losses, PCI, by Loan to Value Ratio, Consumer (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
PCI Loans UPB [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	$ 18,312	$ 20,803
PCI Loans UPB [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	175	192
PCI Loans UPB [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	18,487	20,995
PCI Loans Carrying Value [Member]
By LTV/CLTV:
PCI loans	14,273	16,731
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans	13,979	16,018
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans	31	36
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	14,010	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	7,316	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	7,356	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	7,604	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	70	76
LTV 60.01-80% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	7,674	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	2,750	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	45	54
LTV 80.01-100% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	2,795	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	517	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	14	18
LTV 100.01-120% [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans	531	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	124	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	129	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	1	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	1	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		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Components of Other Assets [Line Items]
Cost method investments		$ 7,607		$ 7,607		$ 8,397
Equity method investments		15,823		15,823		15,708
Other assets, carried at fair value		3,986		3,986		3,275
Total nonmarketable equity investments		27,416		27,416		27,380
Corporate/bank-owned life insurance		19,430		19,430		19,325
Accounts receivable (3)		41,853		41,853		31,056
Interest receivable		5,401		5,401		5,339
Customer relationship and other amortized intangibles		3,532		3,532		4,115
Non-residential real estate		347		347		403
Operating lease assets		9,713		9,713		10,089
Due from customers on acceptances		192		192		196
Other		12,047		12,047		17,469
Other assets	[1]	118,966		118,966		114,541
Other Assets Textual [Abstract]
Income (loss) from affordable housing projects, equity method investments		227	$ 199	457	$ 401
Low income housing tax credit (LIHTC) investment total tax benefits		347	304	694	611
Low income housing tax credit (LIHTC) investment tax credits		260	230	521	460
Low income housing tax credit (LIHTC) investment liability for unfunded commitments		3,300		$ 3,300		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		87	129	$ 374	314
All other		(195)	(135)	(240)	(321)
Total		(108)	$ (6)	134	$ (7)
Government insured/guaranteed [Member]
Components of Other Assets [Line Items]
Residential real estate		149		149		197
Non-government insured/guaranteed [Member]
Components of Other Assets [Line Items]
Residential real estate		285		285		378
Core deposit intangibles [Member]
Components of Other Assets [Line Items]
Customer relationship and other amortized intangibles		1,193		1,193		1,620
Customer relationship and other amortized intangibles [Member]
Components of Other Assets [Line Items]
Customer relationship and other amortized intangibles		940		940		1,089
Auction rate securities [Member]
Components of Other Assets [Line Items]
Cost method investments		420		420		525
Federal bank stock [Member]
Components of Other Assets [Line Items]
Cost method investments		5,820		5,820		6,407
Low Income Housing Tax Credit Equity Method Investments [Member]
Components of Other Assets [Line Items]
Equity method investments		9,828		9,828		9,714
Private equity and other [Member]
Components of Other Assets [Line Items]
Cost method investments		1,367		1,367		1,465
Equity method investments		3,740		3,740		3,635
Tax Advantaged Renewable Energy [Member]
Components of Other Assets [Line Items]
Equity method investments		1,960		1,960		2,054
New Market Tax Credit and Other [Member]
Components of Other Assets [Line Items]
Equity method investments		$ 295		$ 295		$ 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		Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		$ 20,248	$ 20,729	$ 20,407	$ 19,111
Federal funds sold, securities purchased under resale agreements and other short-term investments		264,706	266,038
Trading assets		83,607	74,397
Investment securities		409,592	407,519
Loans	[1]	957,423	967,604
Mortgage servicing rights		12,789	12,959
Derivative assets		13,273	14,498
Other assets	[1]	118,966	114,541
Total assets	[2]	1,930,871	1,930,115
Short-term borrowings		95,356	96,781
Derivative liabilities		11,636	14,492
Accrued expenses and other liabilities		73,035	57,189
Long-term debt		238,869	255,077
Total liabilities	[3]	1,724,726	1,729,618
Noncontrolling interests		915	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		1,431	2,034
Investment securities		5,145	8,530
Loans		5,456	6,698
Mortgage servicing rights		13,337	13,386
Derivative assets		77	91
Other assets		10,321	10,281
Total assets		35,767	41,020
Short-term borrowings		0	0
Derivative liabilities		92	59
Accrued expenses and other liabilities		235	306
Long-term debt		3,282	3,598
Total liabilities		3,609	3,963
Noncontrolling interests		0	0
Net assets		32,158	37,057
VIEs that we consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		112	168
Federal funds sold, securities purchased under resale agreements and other short-term investments		424	74
Trading assets		50	130
Investment securities		0	0
Loans		12,096	12,589
Mortgage servicing rights		0	0
Derivative assets		0	1
Other assets		339	452
Total assets		13,021	13,414
Short-term borrowings		0	0
Derivative liabilities		28	33
Accrued expenses and other liabilities		96	107
Long-term debt		2,835	3,694
Total liabilities		2,959	3,834
Noncontrolling interests		86	138
Net assets		9,976	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		381	786
Loans		121	138
Mortgage servicing rights		0	0
Derivative assets		0	0
Other assets		6	11
Total assets		709	1,136
Short-term borrowings		539	905
Derivative liabilities		0	0
Accrued expenses and other liabilities		1	2
Long-term debt		122	136
Total liabilities		662	1,043
Noncontrolling interests		0	0
Net assets		47	93
Total VIE [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		112	168
Federal funds sold, securities purchased under resale agreements and other short-term investments		424	74
Trading assets		1,682	2,365
Investment securities		5,526	9,316
Loans		17,673	19,425
Mortgage servicing rights		13,337	13,386
Derivative assets		77	92
Other assets		10,666	10,744
Total assets		49,497	55,570
Short-term borrowings		539	905
Derivative liabilities		120	92
Accrued expenses and other liabilities		332	415
Long-term debt		6,239	7,428
Total liabilities		7,230	8,840
Noncontrolling interests		86	138
Net assets		$ 42,181	$ 46,592
[1]	Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.
[2]	Our consolidated assets at June 30, 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, $112 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $424 million and $74 million; Trading assets, $50 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $12.1 billion and $12.6 billion; Derivative assets, $0 million and $1 million; Other assets, $339 million and $452 million; and Total assets, $13.0 billion and $13.4 billion, respectively.
[3]	Our consolidated liabilities at June 30, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $28 million and $33 million; Accrued expenses and other liabilities, $96 million and $107 million; Long-term debt, $2.8 billion and $3.7 billion; and Total liabilities, $3.0 billion and $3.8 billion, respectively.

Securitizations and Variable 84

Securitizations and Variable Interest Entities, Unconsolidated VIEs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Variable Interest Entity [Line Items]
Total VIE assets	$ 1,371,938		$ 1,371,938		$ 1,395,604
Securitizations and Variable Interest Entities Textual [Abstract]
Carrying value of delinquent loans eligible for repurchase	$ 1,100		$ 1,100		$ 1,200
Percentage of underlying collateral rated as investment grade	100.00%		100.00%		100.00%
Principal amount that would be payable to securitization vehicles	$ 1,100		$ 1,100		$ 1,200
Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,171,325		1,171,325		1,166,296
Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Total VIE assets	16,198		16,198		18,805
Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Total VIE assets	144,257		144,257		166,596
Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,157		1,157		1,472
Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,511		1,511		1,545
Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Total VIE assets	4,862		4,862		9,152
Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Total VIE assets	29,774		29,774		29,713
Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Total VIE assets	29		29		78
Investment Funds [Member]
Variable Interest Entity [Line Items]
Total VIE assets	214		214		214
Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Total VIE assets	2,611		2,611		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	13	$ 26	27	$ 56
Debt and equity interests [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	22,353		22,353		27,543
Maximum exposure to loss	22,353		22,353		27,543
Debt and equity interests [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	2,299		2,299		3,026
Maximum exposure to loss	2,299		2,299		3,026
Debt and equity interests [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	801		801		873
Maximum exposure to loss	801		801		873
Debt and equity interests [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	2,556		2,556		4,258
Maximum exposure to loss	2,556		2,556		4,258
Debt and equity interests [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Debt and equity interests [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	1,473		1,473		1,507
Maximum exposure to loss	1,473		1,473		1,507
Debt and equity interests [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	3,755		3,755		6,522
Maximum exposure to loss	3,755		3,755		6,522
Debt and equity interests [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	10,811		10,811		10,669
Maximum exposure to loss	10,811		10,811		10,669
Debt and equity interests [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	8		8		10
Maximum exposure to loss	8		8		10
Debt and equity interests [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	54		54		48
Maximum exposure to loss	54		54		48
Debt and equity interests [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	596		596		630
Maximum exposure to loss	596		596		630
Servicing assets [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	13,337		13,337		13,386
Maximum exposure to loss	13,337		13,337		13,386
Servicing assets [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	12,394		12,394		12,434
Maximum exposure to loss	12,394		12,394		12,434
Servicing assets [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	90		90		109
Maximum exposure to loss	90		90		109
Servicing assets [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	853		853		843
Maximum exposure to loss	853		853		843
Servicing assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Servicing assets [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Servicing assets [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Servicing assets [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Servicing assets [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Servicing assets [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Servicing assets [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(15)		(15)		31
Maximum exposure to loss	186		186		187
Derivative [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	75		75		87
Maximum exposure to loss	79		79		94
Derivative [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Derivative [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(90)		(90)		(56)
Maximum exposure to loss	107		107		93
Other commitments and guarantees [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(3,517)		(3,517)		(3,903)
Maximum exposure to loss	11,917		11,917		11,748
Other commitments and guarantees [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(180)		(180)		(232)
Maximum exposure to loss	875		875		979
Other commitments and guarantees [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(2)		(2)		(2)
Maximum exposure to loss	2		2		2
Other commitments and guarantees [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(33)		(33)		(35)
Maximum exposure to loss	9,767		9,767		9,566
Other commitments and guarantees [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(20)		(20)		(25)
Maximum exposure to loss	20		20		25
Other commitments and guarantees [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Other commitments and guarantees [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	71		71		72
Other commitments and guarantees [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(3,282)		(3,282)		(3,609)
Maximum exposure to loss	1,024		1,024		1,104
Other commitments and guarantees [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Other commitments and guarantees [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	0		0		0
Other commitments and guarantees [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0		0
Maximum exposure to loss	158		158		0
Total exposure [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	47,793		47,793		52,864
Total exposure [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	15,568		15,568		16,439
Total exposure [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	893		893		984
Total exposure [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	13,255		13,255		14,761
Total exposure [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	20		20		25
Total exposure [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	1,473		1,473		1,507
Total exposure [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	3,826		3,826		6,594
Total exposure [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	11,835		11,835		11,773
Total exposure [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	8		8		10
Total exposure [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	54		54		48
Total exposure [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	861		861		723
Net assets [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	32,158		32,158		37,057
Net assets [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	14,513		14,513		15,228
Net assets [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	889		889		980
Net assets [Member] | Commercial Mortgage Backed Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	3,451		3,451		5,153
Net assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(20)		(20)		(25)
Net assets [Member] | Collateralized Debt Obligations Loans [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	1,473		1,473		1,507
Net assets [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	3,755		3,755		6,522
Net assets [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	7,529		7,529		7,060
Net assets [Member] | Collateralized Loan Obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	8		8		10
Net assets [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	54		54		48
Net assets [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	506		506		574
Equity Interests [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	10,300		10,300		10,300
Other investments [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities available for sale portfolio of ARS issued by VIEs	420		420		453
Trust preferred securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(2,000)		(2,000)		(2,100)
Securitizations and Variable Interest Entities Textual [Abstract]
Trust preferred securities redeemed			150
Trust preferred securities [Member] | Preferred Stock [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Carrying value - equity	$ 2,500		$ 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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Securitizations and Variable Interest Entities Textual [Abstract]
Amount paid to repurchase loans from securitization vehicles	$ 1,600	$ 2,000	$ 3,900	$ 4,900
Net gain from sale of assets securitizations	393	100	525	295
Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount transferred related to mortgages to unconsolidated VIE	49,700	65,000	105,200	102,300
Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Proceeds from securitizations and whole loan sales	52,824	66,455	111,081	111,471
Fees from servicing rights retained	840	864	1,694	1,745
Cash flows from other interests held	641	627	1,475	1,034
Servicing advances, net of repayments	(20)	(39)	(162)	(107)
Other financial assets [Member]
Cash Flow Securitizations [Abstract]
Proceeds from securitizations and whole loan sales	4	83	25	133
Fees from servicing rights retained	0	0	0	0
Cash flows from other interests held	0	0	0	1
Servicing advances, net of repayments	0	0	0	0
Commercial Loan [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Net gain from sale of assets securitizations	80	58	176	193
Amount transferred related to mortgages to unconsolidated VIE	3,300	1,800	6,600	9,900
Non-agency securitizations and whole loan transactions [Member] | Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	5	15	7	18
Non-agency securitizations and whole loan transactions [Member] | Other financial assets [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	0	0	0	0
Agency securitizations | Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	23	35	46	82
Agency securitizations | Other financial assets [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	$ 0	$ 0	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			957	764
Amount of liability for repurchase reserves at fair value			14	15
Fair Value, Inputs, Level 3 [Member] | Commercial Loan [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount of servicing asset at fair value			82	135
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities, at fair value			3,500	3,200
Fair Value, Inputs, Level 2 [Member] | Commercial Loan [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities, at fair value			$ 65	$ 86

Securitizations and Variable 86

Securitizations and Variable Interest Entities, Residential Mortgage Servicing Rights (Details) - Residential mortgage servicing rights [Member] - $ / loan	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Prepayment speed	12.80%	12.10%	11.50%	12.50%
Discount rate	6.90%	6.70%	6.80%	6.80%
Cost to service ($ per loan)	152	141	142	143

Securitizations and Variable 87

Securitizations and Variable Interest Entities, Retained Interests from Unconsolidated VIEs (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 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	$ 12,789	$ 12,959
Expected weighted-average life (in years)	6 years 2 months 12 days	6 years 3 months 18 days
Key economic assumptions:
Prepayment speed assumption	10.50%	10.30%
Decrease in fair value from:
10% adverse change	$ 560	$ 583
25% adverse change	$ 1,326	$ 1,385
Discount rate assumption	6.80%	6.80%
Decrease in fair value from:
100 basis point increase	$ 632	$ 649
200 basis point increase	$ 1,206	$ 1,239
Cost to service assumption ($ per loan) | $ / loan	149	155
Decrease in fair value from:
10% adverse change	$ 484	$ 515
25% adverse change	1,210	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	$ 24	$ 28
Expected weighted-average life (in years)	3 years 9 months 18 days	3 years 10 months 24 days
Key economic assumptions:
Prepayment speed assumption	17.30%	17.40%
Decrease in fair value from:
10% adverse change	$ 1	$ 1
25% adverse change	$ 2	$ 2
Discount rate assumption	13.40%	13.30%
Decrease in fair value from:
100 basis point increase	$ 0	$ 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	$ 487	$ 249
Expected weighted-average life (in years)	5 years 6 months	3 years 1 month 6 days
Decrease in fair value from:
Discount rate assumption	4.00%	5.20%
Decrease in fair value from:
100 basis point increase	$ 21	$ 7
200 basis point increase	$ 40	$ 12
Decrease in fair value from:
Credit loss assumption	2.40%	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	$ 538	$ 552
Expected weighted-average life (in years)	5 years 3 months 18 days	5 years 1 month 6 days
Decrease in fair value from:
Discount rate assumption	2.80%	2.70%
Decrease in fair value from:
100 basis point increase	$ 24	$ 23
200 basis point increase	$ 46	$ 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	$ 2,000	$ 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	$ 225	$ 259
VIEs that we do not consolidate [Member] | Loans [Member]
Decrease in fair value from:
200 basis point increase	45	154
Securitizations and Variable Interest Entities Textual [Abstract]
Loans receivable	$ 2,100	$ 3,200

Securitizations and Variable 88

Securitizations and Variable Interest Entities, Off-Balance Sheet Loans Sold or Securitized (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	$ 1,247,757		$ 1,266,936
Delinquent loans and foreclosed assets	17,794		19,778
Net charge-offs	777	$ 690
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	978		1,300
Delinquent loans	9,100		9,800
Total Commercial [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	98,330		106,745
Delinquent loans and foreclosed assets	3,507		3,325
Net charge-offs	382	156
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	1,600		1,700
Commercial real estate mortgage [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	98,330		106,745
Delinquent loans and foreclosed assets	3,507		3,325
Net charge-offs	382	156
Total Consumer [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,149,427		1,160,191
Delinquent loans and foreclosed assets	14,287		16,453
Net charge-offs	395	534
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	1,400		1,800
Real estate 1-4 family first mortgage [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,149,427		1,160,191
Delinquent loans and foreclosed assets	14,287		$ 16,453
Net charge-offs	$ 395	$ 534

Securitizations and Variable 89

Securitizations and Variable Interest Entities, Transactions with Consolidated VIEs and Secured Borrowings (Details) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Assets	[1]	$ 1,930,871	$ 1,930,115
Liabilities	[2]	(1,724,726)	(1,729,618)
Noncontrolling interests		(915)	(916)
Securitizations and Variable Interest Entities Textual [Abstract]
Long-term debt		238,869	255,077
Total secured borrowings [Member]
Variable Interest Entity [Line Items]
Total VIE assets		801	1,612
Total secured borrowings [Member] | Municipal tender option bond securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		677	1,473
Total secured borrowings [Member] | Residential mortgage securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		124	139
Consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Total VIE assets		13,834	14,017
Assets		13,021	13,414
Liabilities		(2,959)	(3,834)
Noncontrolling interests		(86)	(138)
Net assets		9,976	9,442
Securitizations and Variable Interest Entities Textual [Abstract]
Long-term debt		2,835	3,694
Consolidated VIEs [Member] | Commercial real estate loans [Member]
Variable Interest Entity [Line Items]
Total VIE assets		1,922	1,516
Consolidated VIEs [Member] | Commercial and Industrial Loans and Leases [Member]
Variable Interest Entity [Line Items]
Total VIE assets		8,698	8,821
Consolidated VIEs [Member] | Nonconforming residential mortgage loan securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		3,006	3,349
Consolidated VIEs [Member] | Structured asset finance [Member]
Variable Interest Entity [Line Items]
Total VIE assets		16	23
Consolidated VIEs [Member] | Investment funds [Member]
Variable Interest Entity [Line Items]
Total VIE assets		52	142
Consolidated VIEs [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Total VIE assets		140	166
Total secured borrowings and consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Total VIE assets		14,635	15,629
Carrying value [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Long-term debt		238,862	255,070
Carrying value [Member] | Total secured borrowings [Member]
Variable Interest Entity [Line Items]
Assets		709	1,136
Liabilities		(662)	(1,043)
Noncontrolling interests		0	0
Net assets		47	93
Carrying value [Member] | Total secured borrowings [Member] | Municipal tender option bond securitizations [Member]
Variable Interest Entity [Line Items]
Assets		588	998
Liabilities		(540)	(907)
Noncontrolling interests		0	0
Net assets		48	91
Carrying value [Member] | Total secured borrowings [Member] | Residential mortgage securitizations [Member]
Variable Interest Entity [Line Items]
Assets		121	138
Liabilities		(122)	(136)
Noncontrolling interests		0	0
Net assets		(1)	2
Carrying value [Member] | Consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Assets		13,021	13,414
Liabilities		(2,959)	(3,834)
Noncontrolling interests		(86)	(138)
Net assets		9,976	9,442
Carrying value [Member] | Consolidated VIEs [Member] | Commercial real estate loans [Member]
Variable Interest Entity [Line Items]
Assets		1,922	1,516
Liabilities		0	0
Noncontrolling interests		0	0
Net assets		1,922	1,516
Carrying value [Member] | Consolidated VIEs [Member] | Commercial and Industrial Loans and Leases [Member]
Variable Interest Entity [Line Items]
Assets		8,279	8,623
Liabilities		(2,055)	(2,819)
Noncontrolling interests		(13)	(14)
Net assets		6,211	5,790
Carrying value [Member] | Consolidated VIEs [Member] | Nonconforming residential mortgage loan securitizations [Member]
Variable Interest Entity [Line Items]
Assets		2,637	2,974
Liabilities		(895)	(1,003)
Noncontrolling interests		0	0
Net assets		1,742	1,971
Carrying value [Member] | Consolidated VIEs [Member] | Structured asset finance [Member]
Variable Interest Entity [Line Items]
Assets		10	13
Liabilities		(7)	(9)
Noncontrolling interests		0	0
Net assets		3	4
Carrying value [Member] | Consolidated VIEs [Member] | Investment funds [Member]
Variable Interest Entity [Line Items]
Assets		52	142
Liabilities		(1)	(2)
Noncontrolling interests		(32)	(67)
Net assets		19	73
Carrying value [Member] | Consolidated VIEs [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Assets		121	146
Liabilities		(1)	(1)
Noncontrolling interests		(41)	(57)
Net assets		79	88
Carrying value [Member] | Total secured borrowings and consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Assets		13,730	14,550
Liabilities		(3,621)	(4,877)
Noncontrolling interests		(86)	(138)
Net assets		10,023	9,535
Long-term debt [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Private placement debt financing			6,000
Loans [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Assets pledged to collateralize the borrowings of variable interest entity			434
Available-for-sale securities [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Assets pledged to collateralize the borrowings of variable interest entity			$ 6,100
Senior notes [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Long-term debt		$ 1,000
[1]	Our consolidated assets at June 30, 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, $112 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $424 million and $74 million; Trading assets, $50 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $12.1 billion and $12.6 billion; Derivative assets, $0 million and $1 million; Other assets, $339 million and $452 million; and Total assets, $13.0 billion and $13.4 billion, respectively.
[2]	Our consolidated liabilities at June 30, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $28 million and $33 million; Accrued expenses and other liabilities, $96 million and $107 million; Long-term debt, $2.8 billion and $3.7 billion; and Total liabilities, $3.0 billion and $3.8 billion, respectively.

Mortgage Banking Activities, An

Mortgage Banking Activities, Analysis of Changes in Fair Value MSRs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 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	$ (360)	$ (824)	(186)	$ (1,781)
Changes due to collection/realization of expected cash flows over time	(487)	(568)	(948)	(1,059)
Total changes in fair value	(847)	(1,392)	(1,134)	(2,840)
Fair value, end of period	12,789		12,789
Carried at fair value [Member]
Changes in MSRs measured at fair value
Fair value, beginning of period	13,208	11,333	12,959	12,415
Servicing from securitizations or asset transfers (1)	436	477	1,019	843
Sales and other (2)	(8)	(22)	(55)	(22)
Net additions	428	455	964	821
Changes in fair value:
Net changes in valuation model inputs or assumptions	(360)	(824)	(186)	(1,781)
Changes due to collection/realization of expected cash flows over time	(487)	(568)	(948)	(1,059)
Total changes in fair value	(847)	(1,392)	(1,134)	(2,840)
Fair value, end of period	12,789	10,396	12,789	10,396
Carried at fair value [Member] | Mortgage interest rates [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	(305)	(779)	(153)	(1,863)
Carried at fair value [Member] | Servicing and foreclosure costs [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	(14)	(4)	13	23
Carried at fair value [Member] | Prepayment estimates and other [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	$ (41)	$ (41)	$ (46)	$ 59

Mortgage Banking Activities, 91

Mortgage Banking Activities, Analysis of Changes in Amortized MSRs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Changes in amortized MSRs
Amortization	$ (66)	$ (68)	$ (133)	$ (135)
Amortized [Member]
Changes in amortized MSRs
Balance, beginning of period	1,402	1,359	1,406	1,308
Purchases	26	24	44	45
Servicing from securitizations or asset transfers	37	38	82	135
Amortization	(66)	(68)	(133)	(135)
Balance, end of period	1,399	1,353	1,399	1,353
Fair value of amortized MSRs:
Beginning of period	2,051	1,725	1,956	1,680
End of period	1,989	1,620	1,989	1,620
Commercial mortgage servicing [Member] | Amortized [Member]
Mortgage Banking Activities (Textual) [Abstract]
Valuation allowance	$ 0	$ 0	$ 0	$ 0

Mortgage Banking Activities, Ma

Mortgage Banking Activities, Managed Servicing Portfolio (Details) - USD ($) $ in Billions	Jun. 30, 2017	Dec. 31, 2016
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	$ 1,664	$ 1,684
Total managed servicing portfolio	$ 2,149	$ 2,179
Ratio of MSRs to related loans serviced for others	0.85%	0.85%
Residential mortgage servicing rights [Member]
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	$ 1,189	$ 1,205
Owned loans serviced	343	347
Subserviced for others	4	8
Total managed servicing portfolio	1,536	1,560
Commercial mortgage servicing [Member]
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	475	479
Owned loans serviced	130	132
Subserviced for others	8	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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Mortgage Banking Activities [Abstract]
Contractually specified servicing fees	$ 900	$ 949	$ 1,807	$ 1,903
Late charges	44	42	92	90
Ancillary fees	59	54	109	115
Unreimbursed direct servicing costs	(121)	(203)	(244)	(356)
Net servicing fees	882	842	1,764	1,752
Changes in fair value of MSRs carried at fair value:
Due to changes in valuation model inputs or assumptions	(360)	(824)	(186)	(1,781)
Changes due to collection/realization of expected cash flows over time	(487)	(568)	(948)	(1,059)
Total changes in fair value of MSRs carried at fair value	(847)	(1,392)	(1,134)	(2,840)
Amortization	(66)	(68)	(133)	(135)
Net Derivative Gains (Losses) From Economic Hedges Related To Mortgage Servicing Activities	431	978	359	2,433
Total servicing income, net	400	360	856	1,210
Net gains on mortgage loan origination/sales activities	748	1,054	1,520	1,802
Total mortgage banking noninterest income	1,148	1,414	2,376	3,012
Market-related valuation changes to MSRs, net of hedge results	$ 71	$ 154	$ 173	$ 652

Mortgage Banking Activities, 94

Mortgage Banking Activities, Analysis of Changes in Liability for Mortgage Loan Repurchase Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Liability For Mortgage Loan Repurchase Losses [Abstract]
Balance, beginning of period	$ 222	$ 355	$ 229	$ 378
Provision for repurchase losses:
Loan sales	6	8	14	15
Change in estimate	(45)	(89)	(53)	(108)
Net reductions	(39)	(81)	(39)	(93)
Losses	(5)	(19)	(12)	(30)
Balance, end of period	178	$ 255	178	$ 255
Liability For Mortgage Loans Repurchase Losses [Member]
Mortgage Banking Activities (Textual) [Abstract]
Range of possible loss, portion not accrued	$ 167		$ 167

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Amortized intangible assets:
Gross carrying value	$ 20,489	$ 20,357
Accumulated amortization	(16,957)	(16,242)
Net carrying value	3,532	4,115
Unamortized intangible assets:
Mortgage servicing rights	12,789	12,959
Goodwill	26,573	26,693	$ 26,963	$ 25,529
Trademark	14	14
MSRs [Member]
Amortized intangible assets:
Gross carrying value	3,721	3,595
Accumulated amortization	(2,322)	(2,189)
Net carrying value	1,399	1,406
Core deposit intangibles [Member]
Amortized intangible assets:
Gross carrying value	12,834	12,834
Accumulated amortization	(11,641)	(11,214)
Net carrying value	1,193	1,620
Customer relationship and other intangibles [Member]
Amortized intangible assets:
Gross carrying value	3,934	3,928
Accumulated amortization	(2,994)	(2,839)
Net carrying value	$ 940	$ 1,089

Intangible Assets, Amortization

Intangible Assets, Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Six months ended June 30, 2017 (actual)	$ 287	$ 299	$ 576	$ 592
Estimate for the remainder of 2017	700		700
Estimate for year ended December 31,
2,018	1,289		1,289
2,019	309		309
2,020	273		273
2,021	235		235
2,022	203		203
Finite lived intangible assets [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Six months ended June 30, 2017 (actual)			716
Amortized MSRs [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Six months ended June 30, 2017 (actual)			133
Estimate for the remainder of 2017	127		127
Estimate for year ended December 31,
2,018	227		227
2,019	201		201
2,020	184		184
2,021	159		159
2,022	140		140
Core deposit intangibles [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Six months ended June 30, 2017 (actual)			427
Estimate for the remainder of 2017	424		424
Estimate for year ended December 31,
2,018	769		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]
Six months ended June 30, 2017 (actual)			156
Estimate for the remainder of 2017	149		149
Estimate for year ended December 31,
2,018	293		293
2,019	108		108
2,020	89		89
2,021	76		76
2,022	$ 63		63
Lease agreement intangibles [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Six months ended June 30, 2017 (actual)			$ 7

Intangible Assets, Allocation o

Intangible Assets, Allocation of Goodwill to Operating Segments (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 26,693	$ 25,529	$ 25,529
Reclassification of goodwill held for sale to Other Assets	(96)		0	$ 0
Reduction in goodwill related to divested business and other	(24)	(84)
Goodwill from business combinations		1,518
Goodwill, Ending Balance	26,573	26,963	26,693	25,529
Community Banking [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	16,849	16,849	16,849
Reclassification of goodwill held for sale to Other Assets	0
Reduction in goodwill related to divested business and other	0	0
Goodwill from business combinations		0
Goodwill, Ending Balance	16,849	16,849	16,849	16,849
Wholesale Banking [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	8,585	7,475	7,475
Reclassification of goodwill held for sale to Other Assets	(96)
Reduction in goodwill related to divested business and other	(24)	(84)
Goodwill from business combinations		1,518
Goodwill, Ending Balance	8,465	8,909	8,585	7,475
Wealth and Investment Management [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,259	1,205	1,205
Reclassification of goodwill held for sale to Other Assets	0
Reduction in goodwill related to divested business and other	0	0
Goodwill from business combinations		0
Goodwill, Ending Balance	$ 1,259	$ 1,205	$ 1,259	$ 1,205

Guarantees, Pledged Assets an98

Guarantees, Pledged Assets and Collateral (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		$ (244)		$ (244)		$ 136
Maximum exposure to loss, expires in one year or less		30,319		30,319		27,689
Maximum exposure to loss, expires in one year through three years		19,675		19,675		20,190
Maximum exposure to loss, expires in three years through five years		8,645		8,645		8,732
Maximum exposure to loss, expires after five years		15,622		15,622		15,212
Maximum exposure to loss		74,261		74,261		71,823
Total assets	[1]	1,930,871		1,930,871		1,930,115
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value		4,700		4,700		6,600
Mortgages held for sale		4,500		4,500		15,800
Carrying value of delinquent loans eligible for repurchase		1,100		1,100		1,200
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Trading assets and other		107,374		107,374		84,603
Investment securities		75,174		75,174		90,946
Mortgages held for sale and loans		496,164		496,164		516,112
Total pledged assets		678,712		678,712		691,661
Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		35,128		35,128		34,167
Written put options [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		(334)		(334)		37
Maximum exposure to loss, expires in one year or less		14,781		14,781		10,427
Maximum exposure to loss, expires in one year through three years		10,702		10,702		10,805
Maximum exposure to loss, expires in three years through five years		4,263		4,263		4,573
Maximum exposure to loss, expires after five years		1,244		1,244		1,216
Maximum exposure to loss		30,990		30,990		27,021
Written put options [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		17,899		17,899		15,915
Direct pay letters of credit (DPLCs) [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		9,100		9,100		9,200
Third Party Clearing Indemnifications [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		600		600		1,200
Third-party Clearing Customer Obligations		67		67		175
Collateral Provided to Third-party Clearing Agents		533		533		991
Standby Letters of Credit [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		38		38		38
Maximum exposure to loss, expires in one year or less		14,725		14,725		16,050
Maximum exposure to loss, expires in one year through three years		8,420		8,420		8,727
Maximum exposure to loss, expires in three years through five years		3,451		3,451		3,194
Maximum exposure to loss, expires after five years		685		685		658
Maximum exposure to loss		27,281		27,281		28,629
Standby Letters of Credit [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		8,915		8,915		9,898
Securities lending and other indemnifications [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		0		0		0
Maximum exposure to loss, expires in one year or less		1		1		0
Maximum exposure to loss, expires in one year through three years		0		0		0
Maximum exposure to loss, expires in three years through five years		1		1		1
Maximum exposure to loss, expires after five years		600		600		1,166
Maximum exposure to loss		602		602		1,167
Securities lending and other indemnifications [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		2		2		2
Loans and MHFS sold with recourse [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		51		51		55
Maximum exposure to loss, expires in one year or less		191		191		84
Maximum exposure to loss, expires in one year through three years		547		547		637
Maximum exposure to loss, expires in three years through five years		928		928		947
Maximum exposure to loss, expires after five years		8,865		8,865		8,592
Maximum exposure to loss		10,531		10,531		10,260
Loans and MHFS sold with recourse [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		7,751		7,751		7,228
Factoring guarantee [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		0		0		0
Maximum exposure to loss, expires in one year or less		621		621		1,109
Maximum exposure to loss, expires in one year through three years		0		0		0
Maximum exposure to loss, expires in three years through five years		0		0		0
Maximum exposure to loss, expires after five years		0		0		0
Maximum exposure to loss		621		621		1,109
Factoring guarantee [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		557		557		1,109
Other guarantees [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		1		1		6
Maximum exposure to loss, expires in one year or less		0		0		19
Maximum exposure to loss, expires in one year through three years		6		6		21
Maximum exposure to loss, expires in three years through five years		2		2		17
Maximum exposure to loss, expires after five years		4,228		4,228		3,580
Maximum exposure to loss		4,236		4,236		3,637
Other guarantees [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		4		4		15
Loans and MHFS sold with recourse [Member]
Guarantor Obligations [Line Items]
Loans repurchased		1	$ 1	2	$ 2
Trading assets and other [Member]
Guarantor Obligations [Line Items]
Securities owned and pledged as collateral available to be repledged, Fair Value		107,300		107,300		84,200
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Trading assets and other		36,400		36,400		33,200
Other Trading - Off-Balance Sheet [Member]
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Trading assets and other		71,000		71,000		51,400
Investment securities [Member]
Guarantor Obligations [Line Items]
Securities owned and pledged as collateral available to be repledged, Fair Value		87		87		617
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, carrying value		4,600		4,600		6,200
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value		4,600		4,600		6,200
Consolidated VIEs [Member]
Guarantor Obligations [Line Items]
Total assets		13,021		13,021		13,414
Secured Borrowing transactions excluded [Member]
Guarantor Obligations [Line Items]
Total assets		$ 709		$ 709		$ 1,136
[1]	Our consolidated assets at June 30, 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, $112 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $424 million and $74 million; Trading assets, $50 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $12.1 billion and $12.6 billion; Derivative assets, $0 million and $1 million; Other assets, $339 million and $452 million; and Total assets, $13.0 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	Jun. 30, 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	$ 4,700	$ 6,600
Net amounts in consolidated balance sheet	88,338	79,443
Collateral received, fair value	130,700	102,300
Collateral received with the right to sell or repledge	130,700	102,300
Collateral sold or repledged	69,800	50,000
Collateral pledged, fair value	111,400	91,400
Resale and securities borrowing agreements
Gross amounts recognized	119,721	91,123
Gross amounts offset in consolidated balance sheet	(31,383)	(11,680)
Net amounts in consolidated balance sheet	88,338	79,443
Collateral not recognized in consolidated balance sheet	(88,141)	(78,837)
Net amount	197	606
Repurchase and securities lending agreements
Gross amounts recognized	109,536	89,111
Gross amounts offset in consolidated balance sheet	(31,383)	(11,680)
Net amounts in consolidated balance sheet	78,153	77,431
Collateral pledged but not netted in consolidated balance sheet	(77,796)	(77,184)
Net amount	357	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	67,600	58,100
Resale and securities borrowing agreements
Net amounts in consolidated balance sheet	67,600	58,100
Loans [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net amounts in consolidated balance sheet	20,700	21,300
Resale and securities borrowing agreements
Net amounts in consolidated balance sheet	$ 20,700	$ 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	Jun. 30, 2017	Dec. 31, 2016
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	$ 98,600	$ 82,104
Securities Lending	10,936	7,007
Total Repurchases and Securities Lending	109,536	89,111
Securities of U.S. Treasury and federal agencies [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	52,225	34,335
Securities Lending	108	152
Securities of U.S. states and political subdivisions [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	131	81
Federal agencies [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	32,079	32,669
Securities Lending	174	104
Non-Agency Mortgage-backed Securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	1,679	2,167
Securities Lending	0	1
Corporate debt securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	8,109	6,829
Securities Lending	611	653
Asset-backed Securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	2,352	3,010
Equity Securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	937	1,309
Securities Lending	10,043	6,097
Other [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	1,088	1,704
Overnight/Continuous [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	80,504	60,516
Securities Lending	8,802	5,565
Total Repurchases and Securities Lending	89,306	66,081
Up to 30 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	9,792	9,598
Securities Lending	518	167
Total Repurchases and Securities Lending	10,310	9,765
30-90 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	3,790	6,762
Securities Lending	1,616	1,275
Total Repurchases and Securities Lending	5,406	8,037
Over 90 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	4,514	5,228
Securities Lending	0	0
Total Repurchases and Securities Lending	$ 4,514	$ 5,228

Legal Actions (Details)

Legal Actions (Details)	Aug. 01, 2017USD ($)	Jul. 13, 2012USD ($)	Jun. 30, 2017USD ($)legal_action	Apr. 20, 2017USD ($)
In re Interchange Litigation [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Percentage Of Default Interchange Distributed To Class Merchants		0.10%
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]
Amounts To Be Paid In Connection With Legal Or Regulatory Matters				$ 142,000,000
Sales Practice Matters [Member] | All Class Members [Member]
Legal Actions (Textual) [Abstract]
Amounts To Be Paid In Connection With Legal Or Regulatory Matters				$ 25,000,000
VA Loan Guaranty [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			$ 3,300,000,000
Subsequent Event [Member] | VA Loan Guaranty Program [Domain]
Legal Actions (Textual) [Abstract]
Amounts To Be Paid In Connection With Legal Or Regulatory Matters	$ 108,000,000
Minimum [Member] | VA Loan Guaranty [Member]
Legal Actions (Textual) [Abstract]
Loss Contingency, Damages Sought, Value			5,500
Maximum [Member] | VA Loan Guaranty [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	Jun. 30, 2017	Dec. 31, 2016
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	$ 35,885	$ 85,129
Fair value derivative assets, netting	(22,612)	(70,631)
Net amounts in consolidated balance sheet, assets	13,273	14,498
Fair value derivative liabilities	34,729	87,188
Fair value derivative liabilities, netting	(23,093)	(72,696)
Net amounts in consolidated balance sheet, liabilities	11,636	14,492
Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(12,424)	(59,880)
Net amounts in consolidated balance sheet, assets	6,794	5,388
Fair value derivative liabilities, netting	(12,396)	(58,956)
Net amounts in consolidated balance sheet, liabilities	3,857	6,253
Commodity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(683)	(707)
Net amounts in consolidated balance sheet, assets	851	2,350
Fair value derivative liabilities, netting	(321)	(402)
Net amounts in consolidated balance sheet, liabilities	1,345	2,149
Equity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(3,319)	(3,018)
Net amounts in consolidated balance sheet, assets	3,024	2,340
Fair value derivative liabilities, netting	(3,223)	(2,433)
Net amounts in consolidated balance sheet, liabilities	3,797	3,679
Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(5,905)	(6,663)
Net amounts in consolidated balance sheet, assets	2,381	4,231
Fair value derivative liabilities, netting	(6,921)	(10,572)
Net amounts in consolidated balance sheet, liabilities	2,334	2,170
Credit Contracts Protection Sold [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(35)	(48)
Net amounts in consolidated balance sheet, assets	134	37
Fair value derivative liabilities, netting	(227)	(295)
Net amounts in consolidated balance sheet, liabilities	39	94
Credit Contracts Protection Purchased [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(246)	(315)
Net amounts in consolidated balance sheet, assets	89	152
Fair value derivative liabilities, netting	(5)	(38)
Net amounts in consolidated balance sheet, liabilities	230	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	34	47
Designated as Hedging Instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	3,238	7,260
Fair value derivative liabilities	2,650	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	242,711	235,222
Fair value derivative assets	2,657	6,587
Fair value derivative liabilities	1,205	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	32,640	25,861
Fair value derivative assets	581	673
Fair value derivative liabilities	1,445	2,779
Not Designated as Hedging Instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	32,647	77,869
Fair value derivative liabilities	32,079	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	1,125	2,371
Fair value derivative liabilities	790	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	31,522	75,498
Fair value derivative liabilities	31,289	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	235,234	228,051
Fair value derivative assets	350	1,098
Fair value derivative liabilities	307	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	6,790,132	6,018,370
Fair value derivative assets	16,211	57,583
Fair value derivative liabilities	14,741	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	66,260	65,532
Fair value derivative assets	1,534	3,057
Fair value derivative liabilities	1,666	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	9,641	7,964
Fair value derivative assets	672	545
Fair value derivative liabilities	54	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	171,899	151,675
Fair value derivative assets	5,671	4,813
Fair value derivative liabilities	6,966	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	17,007	20,435
Fair value derivative assets	32	626
Fair value derivative liabilities	429	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	345,994	318,999
Fair value derivative assets	7,673	9,595
Fair value derivative liabilities	7,381	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	10,845	10,483
Fair value derivative assets	169	85
Fair value derivative liabilities	266	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	436	482
Fair value derivative assets	71	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	21,493	19,964
Fair value derivative assets	264	365
Fair value derivative liabilities	235	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	966	961
Fair value derivative assets	0	0
Fair value derivative liabilities	34	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	500	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	$ 12,900	$ 9,600

Derivatives, Gross Fair Value o

Derivatives, Gross Fair Value of Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Derivative Assets
Gross amounts recognized	$ 35,885	$ 85,129
Gross amounts offset in consolidated balance sheet	(22,612)	(70,631)
Net amounts in consolidated balance sheet, assets	13,273	14,498
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(885)	(1,745)
Net amounts	12,388	12,753
Derivative Liabilities
Gross amounts recognized	34,729	87,188
Gross amounts offset in consolidated balance sheet, liabilities	(23,093)	(72,696)
Net amounts in consolidated balance sheet, liabilities	11,636	14,492
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(3,008)	(3,794)
Net amounts	8,628	10,698
Derivatives (Textual) [Abstract]
Derivative assets subject to enforceable master netting arrangements	26,600	74,400
Derivative liabilities subject to enforceable master netting arrangements	28,900	78,400
Derivative assets not subject to enforceable master netting arrangements	9,300	10,700
Derivative liabilities not subject to enforceable master netting arrangements	5,800	8,700
Valuation adjustments for derivative assets	289	348
Valuation adjustments for derivative liabilities	83	114
Cash collateral netted against derivative assets	3,600	4,800
Cash collateral netted against derivative liabilities	4,300	7,100
Interest rate contract [Member]
Derivative Assets
Gross amounts recognized	19,218	65,268
Gross amounts offset in consolidated balance sheet	(12,424)	(59,880)
Net amounts in consolidated balance sheet, assets	6,794	5,388
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(360)	(987)
Net amounts	$ 6,434	$ 4,401
Percent exchanged in the over the counter market	98.00%	34.00%
Derivative Liabilities
Gross amounts recognized	$ 16,253	$ 65,209
Gross amounts offset in consolidated balance sheet, liabilities	(12,396)	(58,956)
Net amounts in consolidated balance sheet, liabilities	3,857	6,253
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(1,899)	(3,129)
Net amounts	$ 1,958	$ 3,124
Percent exchanged in over-the-counter market	98.00%	30.00%
Commodity contract [Member]
Derivative Assets
Gross amounts recognized	$ 1,534	$ 3,057
Gross amounts offset in consolidated balance sheet	(683)	(707)
Net amounts in consolidated balance sheet, assets	851	2,350
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(6)	(30)
Net amounts	$ 845	$ 2,320
Percent exchanged in the over the counter market	80.00%	74.00%
Derivative Liabilities
Gross amounts recognized	$ 1,666	$ 2,551
Gross amounts offset in consolidated balance sheet, liabilities	(321)	(402)
Net amounts in consolidated balance sheet, liabilities	1,345	2,149
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(22)	(37)
Net amounts	$ 1,323	$ 2,112
Percent exchanged in over-the-counter market	88.00%	38.00%
Equity contract [Member]
Derivative Assets
Gross amounts recognized	$ 6,343	$ 5,358
Gross amounts offset in consolidated balance sheet	(3,319)	(3,018)
Net amounts in consolidated balance sheet, assets	3,024	2,340
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(452)	(365)
Net amounts	$ 2,572	$ 1,975
Percent exchanged in the over the counter market	76.00%	75.00%
Derivative Liabilities
Gross amounts recognized	$ 7,020	$ 6,112
Gross amounts offset in consolidated balance sheet, liabilities	(3,223)	(2,433)
Net amounts in consolidated balance sheet, liabilities	3,797	3,679
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(394)	(331)
Net amounts	$ 3,403	$ 3,348
Percent exchanged in over-the-counter market	84.00%	85.00%
Foreign exchange contract [Member]
Derivative Assets
Gross amounts recognized	$ 8,286	$ 10,894
Gross amounts offset in consolidated balance sheet	(5,905)	(6,663)
Net amounts in consolidated balance sheet, assets	2,381	4,231
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(63)	(362)
Net amounts	$ 2,318	$ 3,869
Percent exchanged in the over the counter market	100.00%	97.00%
Derivative Liabilities
Gross amounts recognized	$ 9,255	$ 12,742
Gross amounts offset in consolidated balance sheet, liabilities	(6,921)	(10,572)
Net amounts in consolidated balance sheet, liabilities	2,334	2,170
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(659)	(251)
Net amounts	$ 1,675	$ 1,919
Percent exchanged in over-the-counter market	100.00%	100.00%
Credit Contracts Protection Sold [Member]
Derivative Assets
Gross amounts recognized	$ 169	$ 85
Gross amounts offset in consolidated balance sheet	(35)	(48)
Net amounts in consolidated balance sheet, assets	134	37
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	0	0
Net amounts	$ 134	$ 37
Percent exchanged in the over the counter market	10.00%	61.00%
Derivative Liabilities
Gross amounts recognized	$ 266	$ 389
Gross amounts offset in consolidated balance sheet, liabilities	(227)	(295)
Net amounts in consolidated balance sheet, liabilities	39	94
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(33)	(44)
Net amounts	$ 6	$ 50
Percent exchanged in over-the-counter market	93.00%	98.00%
Credit Contracts Protection Purchased [Member]
Derivative Assets
Gross amounts recognized	$ 335	$ 467
Gross amounts offset in consolidated balance sheet	(246)	(315)
Net amounts in consolidated balance sheet, assets	89	152
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(4)	(1)
Net amounts	$ 85	$ 151
Percent exchanged in the over the counter market	96.00%	98.00%
Derivative Liabilities
Gross amounts recognized	$ 235	$ 138
Gross amounts offset in consolidated balance sheet, liabilities	(5)	(38)
Net amounts in consolidated balance sheet, liabilities	230	100
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(1)	(2)
Net amounts	$ 229	$ 98
Percent exchanged in over-the-counter market	8.00%	50.00%
Other contract [Member]
Derivative Liabilities
Gross amounts recognized	$ 34	$ 47
Gross amounts offset in consolidated balance sheet, liabilities	0	0
Net amounts in consolidated balance sheet, liabilities	34	47
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	0	0
Net amounts	$ 34	$ 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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 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)	$ 201	$ 328	$ 466	$ 643
Gains (losses) recorded in noninterest income recognized on derivatives	1,473	645	1,149	3,580
Gains (losses) recorded in noninterest income recognized on hedged item	(1,404)	(477)	(1,272)	(2,903)
Net recognized on fair value hedges (ineffective portion)	69	168	(123)	677
Derivatives (Textual) [Abstract]
Time value component recognized as net interest income (expense) on forward derivatives excluded from the assessment of hedge effectiveness	0	(3)	(1)	(7)
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)	(122)	(170)	(253)	(351)
Gains (losses) recorded in noninterest income recognized on derivatives	(287)	(1,012)	(161)	(2,695)
Gains (losses) recorded in noninterest income recognized on hedged item	268	1,018	127	2,709
Net recognized on fair value hedges (ineffective portion)	(19)	6	(34)	14
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)	2	2	6	2
Gains (losses) recorded in noninterest income recognized on derivatives	(87)	134	(129)	68
Gains (losses) recorded in noninterest income recognized on hedged item	86	(133)	130	(74)
Net recognized on fair value hedges (ineffective portion)	(1)	1	1	(6)
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)	(4)	(4)
Gains (losses) recorded in noninterest income recognized on derivatives	(10)	(5)	(11)	(42)
Gains (losses) recorded in noninterest income recognized on hedged item	6	6	6	39
Net recognized on fair value hedges (ineffective portion)	(4)	1	(5)	(3)
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)	372	483	799	965
Gains (losses) recorded in noninterest income recognized on derivatives	431	1,983	(133)	5,086
Gains (losses) recorded in noninterest income recognized on hedged item	(399)	(1,762)	141	(4,569)
Net recognized on fair value hedges (ineffective portion)	32	221	8	517
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)	(49)	15	(82)	31
Gains (losses) recorded in noninterest income recognized on derivatives	1,426	(455)	1,583	1,163
Gains (losses) recorded in noninterest income recognized on hedged item	(1,365)	394	(1,676)	(1,008)
Net recognized on fair value hedges (ineffective portion)	$ 61	$ (61)	$ (93)	$ 155

Derivatives, Derivatives in Cas

Derivatives, Derivatives in Cash Flow Hedging Relationships (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Gains Losses Recognized Related to Derivatives in Cash Flow Hedging Relationships [Abstract]
Gains (losses) (pre tax) recognized in OCI on derivatives	$ 376	$ 1,057	$ 243	$ 3,056
Gains (pre tax) reclassified from cumulative OCI into net income	153	265	355	521
Gains (losses) (pre tax) recognized in noninterest income for hedge ineffectiveness.	0	0	(3)	1
Derivatives (Textual) [Abstract]
Deferred net gains on derivatives in other comprehensive income			$ 309
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	$ 0	$ 0

Derivatives, Derivatives Not De

Derivatives, Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Derivatives (Textual) [Abstract]
Gains (losses) on derivatives used to hedge residential mortgage servicing rights	$ 431	$ 978	$ 359	$ 2,433
Aggregate fair value of derivatives used for economic hedges net asset (liability)	96		96		$ (617)
Aggregate fair value of derivative loan commitments net asset (liability)	12		12		$ (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	(609)	1,370	(1,811)	2,290
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	(336)	1,149	(909)	1,796
Derivatives (Textual) [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Loss	(48)	(113)	(46)	(244)
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	(273)	221	(902)	494
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	351	566	342	1,431
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	254	510	447	975
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	(51)	(117)	(45)	(252)
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	18	(280)	63	(730)
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	15	64	75	117
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	(205)	205	(686)	288
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	(565)	(315)	(1,674)	(295)
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	(441)	495	(534)	329
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	16	276	201	498
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	10	0	14	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	(13)	(25)	(28)	(41)
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	$ 2	$ (9)	$ 14	$ (30)

Derivatives, Sold and Purchased

Derivatives, Sold and Purchased Credit Derivatives (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	$ 266	$ 389
Notional amount Protection sold	10,845	10,483
Notional amount Protection purchased with identical underlyings	2,477	4,118
Notional Net protection sold	8,368	6,365
Notional Other protection purchased	19,452	16,328
Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	5,054	5,862
Corporate bonds [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	21	22
Notional amount Protection sold	1,860	4,324
Notional amount Protection purchased with identical underlyings	1,288	3,060
Notional Net protection sold	572	1,264
Notional Other protection purchased	$ 1,197	$ 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, 2027	Dec. 31, 2026
Corporate bonds [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 470	$ 1,704
Structured products [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	111	193
Notional amount Protection sold	250	405
Notional amount Protection purchased with identical underlyings	221	295
Notional Net protection sold	29	110
Notional Other protection purchased	$ 153	$ 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	$ 244	$ 333
Credit default swap [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	0	0
Notional amount Protection sold	4,638	1,515
Notional amount Protection purchased with identical underlyings	494	139
Notional Net protection sold	4,144	1,376
Notional Other protection purchased	$ 6,803	$ 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	$ 761	$ 257
Commercial Mortgage Backed Securities [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	116	156
Notional amount Protection sold	476	627
Notional amount Protection purchased with identical underlyings	435	584
Notional Net protection sold	41	43
Notional Other protection purchased	$ 157	$ 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	43	45
Notional amount Protection purchased with identical underlyings	39	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	3,578	3,567
Notional amount Protection purchased with identical underlyings	0	0
Notional Net protection sold	3,578	3,567
Notional Other protection purchased	$ 11,137	$ 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	$ 3,579	$ 3,568

Derivatives Credit-Risk Conting

Derivatives Credit-Risk Contingent Feature Textuals (Details) - USD ($) $ in Billions	Jun. 30, 2017	Dec. 31, 2016
Derivatives [Abstract]
Aggregate fair value of derivative instruments with credit-risk-related contingent features, net liability	$ 10.4	$ 12.8
Collateral for derivative instruments with credit-risk-related contingent features	8.1	8.9
Additional collateral for derivative instruments with credit-risk-related contingent features	$ 2.4	$ 4

Fair Value, Measurements From B

Fair Value, Measurements From Brokers or Third Party Pricing Services (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Financial assets
Available-for-sale Securities	$ 269,202	$ 308,364
Derivatives assets	35,885	85,129
Financial liabilities
Derivatives liabilities	(34,729)	(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	532	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	532	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	41	171
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	491	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	1,129	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	1,129	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	1,129	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	832	899
Available-for-sale Securities	14,940	22,870
Derivatives assets	21	22
Financial liabilities
Derivatives liabilities	(18)	(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	14,940	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	14,940	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	344	60
Available-for-sale Securities	247,319	279,229
Derivatives assets	3	0
Financial liabilities
Derivatives liabilities	(7)	(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	247,032	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	2,956	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	50,456	49,837
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	148,097	176,923
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	45,523	49,162
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Financial assets
Available-for-sale Securities	287	358
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Trading assets	0	0
Available-for-sale Securities	310	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	310	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	208	208
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]
Financial assets
Available-for-sale Securities	76	92
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities
Financial assets
Available-for-sale Securities	26	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	6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 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)	$ 1,100	$ 1,100	$ 820
Assets:
Available-for-sale Securities	269,202		308,364
Mortgages held for sale	19,543		22,042
Loans	443		758
Mortgage servicing rights	12,789		12,959
Derivatives assets	35,885		85,129
Net amounts in consolidated balance sheet, assets	13,273		14,498
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,986		3,275
Investment Measured at NAV	22		48
Liabilities:
Total derivative liabilities	(34,729)		(87,188)
Fair value liability derivatives, net	(11,636)		(14,492)
Collateralized Debt Obligations [Member]
Assets:
Available-for-sale Securities	998		847
Interest rate contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	6,794		5,388
Liabilities:
Fair value liability derivatives, net	(3,857)		(6,253)
Commodity contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	851		2,350
Liabilities:
Fair value liability derivatives, net	(1,345)		(2,149)
Equity contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	3,024		2,340
Liabilities:
Fair value liability derivatives, net	(3,797)		(3,679)
Foreign exchange contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets	2,381		4,231
Liabilities:
Fair value liability derivatives, net	(2,334)		(2,170)
Other contract [Member]
Liabilities:
Fair value liability derivatives, net	(34)		(47)
Fair Value, Measurements, Recurring [Member]
Assets:
Trading assets	81,834		73,032
Total trading assets	83,607		74,397
Available-for-sale Securities	269,202		308,364
Mortgages held for sale	19,543		22,042
Loans	443		758
Mortgage servicing rights	12,789		12,959
Fair value asset derivatives, netting	(22,612)		(70,631)
Net amounts in consolidated balance sheet, assets	13,273		14,498
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,986		3,275
Investment Measured at NAV	0		0
Liabilities:
Fair value liability derivatives, netting	23,093		72,696
Fair value liability derivatives, net	(11,636)		(14,492)
Total short sale liabilities	(16,844)		(16,379)
Other liabilities (2)	(3)		(4)
Total liabilities recorded at fair value	(28,483)		(30,875)
Fair Value, Measurements, Recurring [Member] | Interest rate contract [Member]
Assets:
Derivatives assets	19,218		65,268
Liabilities:
Total derivative liabilities	(16,253)		(65,209)
Fair Value, Measurements, Recurring [Member] | Commodity contract [Member]
Assets:
Derivatives assets	1,534		3,057
Liabilities:
Total derivative liabilities	(1,666)		(2,551)
Fair Value, Measurements, Recurring [Member] | Equity contract [Member]
Assets:
Derivatives assets	6,343		5,358
Liabilities:
Total derivative liabilities	(7,020)		(6,112)
Fair Value, Measurements, Recurring [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	8,286		10,894
Liabilities:
Total derivative liabilities	(9,255)		(12,742)
Fair Value, Measurements, Recurring [Member] | Credit contract [Member]
Assets:
Derivatives assets	504		552
Liabilities:
Total derivative liabilities	(501)		(527)
Fair Value, Measurements, Recurring [Member] | Other contract [Member]
Liabilities:
Total derivative liabilities	(34)		(47)
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member]
Assets:
Available-for-sale Securities	268,174		307,153
Fair Value, Measurements, Recurring [Member] | Securities of U.S. Treasury and federal agencies [Member]
Assets:
Trading assets	16,545		17,660
Available-for-sale Securities	17,896		25,819
Liabilities:
Total short sale liabilities	(9,528)		(10,423)
Fair Value, Measurements, Recurring [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading assets	3,079		2,913
Available-for-sale Securities	52,013		51,101
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member]
Assets:
Trading assets	789		810
Available-for-sale Securities	33,455		35,020
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member]
Assets:
Trading assets	10,255		9,515
Available-for-sale Securities	9,602		11,457
Liabilities:
Total short sale liabilities	(5,180)		(4,063)
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities [Member]
Assets:
Trading assets	22,480		20,254
Available-for-sale Securities	148,710		177,548
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets:
Available-for-sale Securities	135,938		161,230
Fair Value, Measurements, Recurring [Member] | Residential [Member]
Assets:
Available-for-sale Securities	7,359		7,816
Fair Value, Measurements, Recurring [Member] | Commercial [Member]
Assets:
Available-for-sale Securities	5,413		8,502
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member]
Assets:
Trading assets	1,160		1,128
Available-for-sale Securities	6,498		6,207
Fair Value, Measurements, Recurring [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale Securities	530		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	5,649		5,871
Fair Value, Measurements, Recurring [Member] | Other trading assets [Member]
Assets:
Other trading assets	1,773		1,365
Fair Value, Measurements, Recurring [Member] | Other debt securities
Assets:
Available-for-sale Securities	0		1
Fair Value, Measurements, Recurring [Member] | Other short sale liabilities [Member]
Liabilities:
Total short sale liabilities	(45)		(98)
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Assets:
Trading assets	27,526		20,752
Available-for-sale Securities	1,028		1,211
Liabilities:
Total short sale liabilities	(2,091)		(1,795)
Fair Value, Measurements, Recurring [Member] | Perpetual preferred securities [Member]
Assets:
Available-for-sale Securities	465		469
Fair Value, Measurements, Recurring [Member] | Other marketable equity securities [Member]
Assets:
Available-for-sale Securities	563		742
Fair Value, Measurements, Recurring [Member] | Excluding NAV Investments [Member]
Assets:
Total assets recorded at fair value	402,843		436,293
Fair Value, Measurements, Recurring [Member] | Including NAV Investments [Member]
Assets:
Total assets recorded at fair value	402,843		436,293
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Trading assets	40,770		35,412
Total trading assets	40,770		35,412
Available-for-sale Securities	15,735		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	1,594		1,380
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	0		0
Total assets recorded at fair value	58,099		60,573
Liabilities:
Fair value liability derivatives, netting	0		0
Fair value liability derivatives, net	(1,137)		(1,073)
Total short sale liabilities	(10,979)		(11,517)
Other liabilities (2)	0		0
Total liabilities recorded at fair value	(12,116)		(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	(30)		(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	1,545		1,314
Liabilities:
Total derivative liabilities	(1,089)		(919)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	21		22
Liabilities:
Total derivative liabilities	(18)		(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	14,994		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	13,484		14,950
Available-for-sale Securities	14,940		22,870
Liabilities:
Total short sale liabilities	(8,906)		(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	54		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	27,286		20,462
Available-for-sale Securities	741		853
Liabilities:
Total short sale liabilities	(2,073)		(1,795)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Perpetual preferred securities [Member]
Assets:
Available-for-sale Securities	178		112
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other marketable equity securities [Member]
Assets:
Available-for-sale Securities	563		741
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Trading assets	40,626		37,274
Total trading assets	42,360		38,611
Available-for-sale Securities	249,584		281,078
Mortgages held for sale	18,548		21,057
Loans	0		0
Mortgage servicing rights	0		0
Fair value asset derivatives, netting	0		0
Net amounts in consolidated balance sheet, assets	32,687		82,126
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	26		16
Total assets recorded at fair value	343,205		422,888
Liabilities:
Fair value liability derivatives, netting	0		0
Fair value liability derivatives, net	(31,691)		(84,411)
Total short sale liabilities	(5,865)		(4,862)
Other liabilities (2)	0		0
Total liabilities recorded at fair value	(37,556)		(89,273)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest rate contract [Member]
Assets:
Derivatives assets	18,998		64,986
Liabilities:
Total derivative liabilities	(16,146)		(65,047)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodity contract [Member]
Assets:
Derivatives assets	1,504		3,020
Liabilities:
Total derivative liabilities	(1,653)		(2,537)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity contract [Member]
Assets:
Derivatives assets	3,618		2,997
Liabilities:
Total derivative liabilities	(4,280)		(3,879)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	8,247		10,843
Liabilities:
Total derivative liabilities	(9,223)		(12,616)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Credit contract [Member]
Assets:
Derivatives assets	320		280
Liabilities:
Total derivative liabilities	(389)		(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	249,297		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	3,061		2,710
Available-for-sale Securities	2,956		2,949
Liabilities:
Total short sale liabilities	(622)		(701)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading assets	3,070		2,910
Available-for-sale Securities	50,456		49,961
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Loan Obligations [Member]
Assets:
Trading assets	386		501
Available-for-sale Securities	32,453		34,141
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate debt securities [Member]
Assets:
Trading assets	10,229		9,481
Available-for-sale Securities	9,172		10,967
Liabilities:
Total short sale liabilities	(5,180)		(4,063)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member]
Assets:
Trading assets	22,480		20,254
Available-for-sale Securities	148,634		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	135,938		161,230
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential [Member]
Assets:
Available-for-sale Securities	7,358		7,815
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial [Member]
Assets:
Available-for-sale Securities	5,338		8,411
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed securities [Member]
Assets:
Trading assets	1,160		1,128
Available-for-sale Securities	5,626		5,245
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale Securities	530		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	4,777		4,909
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other trading assets [Member]
Assets:
Other trading assets	1,734		1,337
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities
Assets:
Available-for-sale Securities	0		1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other short sale liabilities [Member]
Liabilities:
Total short sale liabilities	(45)		(98)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Assets:
Trading assets	240		290
Available-for-sale Securities	287		358
Liabilities:
Total short sale liabilities	(18)		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Perpetual preferred securities [Member]
Assets:
Available-for-sale Securities	287		357
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other marketable equity securities [Member]
Assets:
Available-for-sale Securities	0		1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Trading assets	438		346
Total trading assets	477		374
Available-for-sale Securities	3,883		3,505
Mortgages held for sale	995		985
Loans	443		758
Mortgage servicing rights	12,789		12,959
Fair value asset derivatives, netting	0		0
Net amounts in consolidated balance sheet, assets	1,604		1,623
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,960		3,259
Total assets recorded at fair value	24,151		23,463
Liabilities:
Fair value liability derivatives, netting	0		0
Fair value liability derivatives, net	(1,901)		(1,704)
Total short sale liabilities	0		0
Other liabilities (2)	(3)		(4)
Total liabilities recorded at fair value	(1,904)		(1,708)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member]
Assets:
Derivatives assets	192		238
Liabilities:
Total derivative liabilities	(77)		(117)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commodity contract [Member]
Assets:
Derivatives assets	30		37
Liabilities:
Total derivative liabilities	(13)		(14)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member]
Assets:
Derivatives assets	1,180		1,047
Liabilities:
Total derivative liabilities	(1,651)		(1,314)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign exchange contract [Member]
Assets:
Derivatives assets	18		29
Liabilities:
Total derivative liabilities	(14)		(17)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member]
Assets:
Derivatives assets	184		272
Liabilities:
Total derivative liabilities	(112)		(195)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other contract [Member]
Liabilities:
Total derivative liabilities	(34)		(47)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member]
Assets:
Available-for-sale Securities	3,883		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	9		3
Available-for-sale Securities	1,557		1,140
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized Loan Obligations [Member]
Assets:
Trading assets	403		309
Available-for-sale Securities	1,002		879
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate debt securities [Member]
Assets:
Trading assets	26		34
Available-for-sale Securities	376		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	76		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	75		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	872		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	872		962
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other trading assets [Member]
Assets:
Other trading assets	39		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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	$ 0	$ 0	$ 0	$ 0
Trading assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	0	0	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	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	0	0
Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Total	0	0	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	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	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	0	0	3
Transfer Out	0	(4)	0	(4)
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	0	0	4
Transfer Out	0	(4)	0	(4)
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	0	0
Transfer Out	0	0	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	0	0
Transfer Out	0	0	0	0
Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	0	0	0
Transfer Out	0	0	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	0	0
Transfer Out	0	0	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	0	0	(1)
Transfer Out	0	0	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	509	15	586	90
Transfer Out	(36)	(28)	(64)	(165)
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	0	4	1	15
Transfer Out	(16)	0	(19)	(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	424	16	496	16
Transfer Out	0	0	(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	5	7	6	9
Transfer Out	(19)	(25)	(61)	(54)
Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	0	0	0	0
Transfer Out	(1)	0	(1)	0
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	80	(12)	83	50
Transfer Out	0	(3)	22	(28)
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	0	0
Transfer Out	0	0	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	36	28	64	162
Transfer Out	(509)	(11)	(586)	(86)
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	16	0	19	0
Transfer Out	0	0	(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	0	0	5	80
Transfer Out	(424)	(16)	(496)	(16)
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	19	25	61	54
Transfer Out	(5)	(7)	(6)	(9)
Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis Transfers Between Fair Value Levels [Line Items]
Transfer In	1	0	1	0
Transfer Out	0	0	0	0
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	0	3	(22)	28
Transfer Out	(80)	12	(83)	(50)
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	0	0
Transfer Out	$ 0	$ 0	$ 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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Trading securities and trading assets [Member]
Assets:
Balance, beginning of period	$ 464	$ 341	$ 374	$ 441
Net gains (losses) included in net income	(7)	(1)	(5)	(33)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	4	(15)	90	(72)
Transfers into Level 3	16	0	19	0
Transfers out of Level 3	0	0	(1)	(11)
Balance, end of period	477	325	477	325
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	5	(3)	6	(28)
Trading assets [Member]
Assets:
Balance, beginning of period	438	309	346	407
Net gains (losses) included in net income	(6)	(2)	(2)	(32)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	6	(15)	92	(72)
Transfers into Level 3	0	0	3	0
Transfers out of Level 3	0	0	(1)	(11)
Balance, end of period	438	292	438	292
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	6	(6)	7	(31)
Trading assets [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Balance, beginning of period	3	8	3	8
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	6	(1)	6	(1)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	9	7	9	7
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Trading assets [Member] | Mortgage-Backed Securities [Member]
Assets:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Trading assets [Member] | Collateralized Loan Obligations [Member]
Assets:
Balance, beginning of period	398	268	309	343
Net gains (losses) included in net income	(7)	1	(3)	(24)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	12	(20)	97	(59)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	(11)
Balance, end of period	403	249	403	249
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	7	(4)	7	(25)
Trading assets [Member] | Corporate debt securities [Member]
Assets:
Balance, beginning of period	37	33	34	56
Net gains (losses) included in net income	1	(3)	1	(8)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(12)	6	(11)	(12)
Transfers into Level 3	0	0	3	0
Transfers out of Level 3	0	0	(1)	0
Balance, end of period	26	36	26	36
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(1)	(2)	0	(6)
Trading assets [Member] | Asset-backed securities [Member]
Assets:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Trading assets [Member] | Equity Securities [Member]
Assets:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Other trading assets [Member]
Assets:
Balance, beginning of period	26	32	28	34
Net gains (losses) included in net income	(1)	1	(3)	(1)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(2)	0	(2)	0
Transfers into Level 3	16	0	16	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	39	33	39	33
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(1)	3	(1)	3
Mortgages held for sale [Member]
Assets:
Balance, beginning of period	957	1,071	985	1,082
Net gains (losses) included in net income	(1)	6	(10)	30
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	25	(11)	(35)	(73)
Transfers into Level 3	19	25	61	54
Transfers out of Level 3	(5)	(7)	(6)	(9)
Balance, end of period	995	1,084	995	1,084
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	6	(10)	27
Loans [Member]
Assets:
Balance, beginning of period	505	5,221	758	5,316
Net gains (losses) included in net income	0	(3)	(6)	(4)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(62)	(186)	(309)	(280)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	443	5,032	443	5,032
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(4)	(4)	(8)	(6)
Mortgage servicing rights [Member]
Assets:
Balance, beginning of period	13,208	11,333	12,959	12,415
Net gains (losses) included in net income	(847)	(1,392)	(1,134)	(2,840)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	428	455	964	821
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	12,789	10,396	12,789	10,396
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(360)	(824)	(186)	(1,781)
Derivative [Member]
Assets and Liabilities:
Balance, beginning of period	(8)	152	(81)	128
Net gains (losses) included in net income	276	665	452	1,252
Total net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(485)	(400)	(563)	(926)
Transfers into Level 3	0	3	(22)	28
Transfers out of Level 3	(80)	12	(83)	(50)
Balance, end of period	(297)	432	(297)	432
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(109)	345	(205)	285
Derivative [Member] | Interest rate contract [Member]
Assets and Liabilities:
Balance, beginning of period	218	501	121	288
Net gains (losses) included in net income	258	660	467	1,259
Total net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(361)	(471)	(473)	(850)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	(7)
Balance, end of period	115	690	115	690
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	12	357	(7)	458
Derivative [Member] | Commodity contract [Member]
Assets and Liabilities:
Balance, beginning of period	19	11	23	12
Net gains (losses) included in net income	0	6	2	8
Total net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	1	(6)	(2)
Transfers into Level 3	0	3	0	3
Transfers out of Level 3	(2)	0	(2)	0
Balance, end of period	17	21	17	21
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	2	9	14	13
Derivative [Member] | Equity contract [Member]
Assets and Liabilities:
Balance, beginning of period	(299)	(283)	(267)	(111)
Net gains (losses) included in net income	(14)	9	(58)	7
Total net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(80)	10	(43)	(130)
Transfers into Level 3	0	0	(22)	25
Transfers out of Level 3	(78)	12	(81)	(43)
Balance, end of period	(471)	(252)	(471)	(252)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(109)	(7)	(189)	(160)
Derivative [Member] | Foreign exchange contract [Member]
Assets and Liabilities:
Balance, beginning of period	3	0	12	0
Net gains (losses) included in net income	1	0	(8)	0
Total net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	4	0	4	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	1	0	(5)	0
Derivative [Member] | Credit contract [Member]
Assets and Liabilities:
Balance, beginning of period	87	0	77	(3)
Net gains (losses) included in net income	28	(1)	35	8
Total net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(43)	62	(40)	56
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	72	61	72	61
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(17)	(4)	(32)	4
Derivative [Member] | Other contract [Member]
Assets and Liabilities:
Balance, beginning of period	(36)	(77)	(47)	(58)
Net gains (losses) included in net income	3	(9)	14	(30)
Total net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(1)	(2)	(1)	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(34)	(88)	(34)	(88)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	2	(10)	14	(30)
Other assets [Member]
Assets:
Balance, beginning of period	3,740	3,097	3,259	3,065
Net gains (losses) included in net income	220	(181)	701	(238)
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	(1)	122	(1)	211
Transfers into Level 3	1	0	1	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	3,960	3,038	3,960	3,038
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	226	(181)	711	(239)
Short sale liabilities [Member]
Liabilities:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Other liabilities [Member]
Liabilities:
Balance, beginning of period	(4)	(5)	(4)	(30)
Net gains (losses) included in net income	1	0	1	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	25
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	(3)	(5)	(3)	(5)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member]
Assets:
Balance, beginning of period	3,650	4,037	3,505	3,726
Net gains (losses) included in net income	3	16	(9)	34
Net gains (losses) included in other comprehensive income	4	7	61	5
Purchases, sales, issuances and settlements, net	650	383	817	598
Transfers into Level 3	0	0	5	80
Transfers out of Level 3	(424)	(16)	(496)	(16)
Balance, end of period	3,883	4,427	3,883	4,427
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(7)	(4)	(11)	(4)
Available-for-sale securities [Member] | Debt Securities [Member]
Assets:
Balance, beginning of period	3,650	4,037	3,505	3,726
Net gains (losses) included in net income	3	16	(9)	34
Net gains (losses) included in other comprehensive income	4	7	61	5
Purchases, sales, issuances and settlements, net	650	383	817	598
Transfers into Level 3	0	0	5	80
Transfers out of Level 3	(424)	(16)	(496)	(16)
Balance, end of period	3,883	4,427	3,883	4,427
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(7)	(4)	(11)	(4)
Available-for-sale securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Balance, beginning of period	1,360	1,457	1,140	1,500
Net gains (losses) included in net income	1	3	1	4
Net gains (losses) included in other comprehensive income	2	1	4	4
Purchases, sales, issuances and settlements, net	618	348	903	221
Transfers into Level 3	0	0	5	80
Transfers out of Level 3	(424)	(16)	(496)	(16)
Balance, end of period	1,557	1,793	1,557	1,793
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member] | Mortgage-Backed Securities [Member]
Assets:
Balance, beginning of period	90	74	92	74
Net gains (losses) included in net income	(3)	0	(6)	0
Net gains (losses) included in other comprehensive income	(5)	0	(1)	0
Purchases, sales, issuances and settlements, net	(6)	21	(9)	21
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	76	95	76	95
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(7)	0	(11)	0
Available-for-sale securities [Member] | Residential [Member]
Assets:
Balance, beginning of period	1	1	1	1
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	1	1	1	1
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member] | Commercial [Member]
Assets:
Balance, beginning of period	89	73	91	73
Net gains (losses) included in net income	(3)	0	(6)	0
Net gains (losses) included in other comprehensive income	(5)	0	(1)	0
Purchases, sales, issuances and settlements, net	(6)	21	(9)	21
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	75	94	75	94
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(7)	0	(11)	0
Available-for-sale securities [Member] | Collateralized Loan Obligations [Member]
Assets:
Balance, beginning of period	964	813	879	565
Net gains (losses) included in net income	5	8	10	23
Net gains (losses) included in other comprehensive income	4	4	45	(20)
Purchases, sales, issuances and settlements, net	29	126	68	383
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	1,002	951	1,002	951
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member] | Corporate debt securities [Member]
Assets:
Balance, beginning of period	391	453	432	405
Net gains (losses) included in net income	0	3	(14)	5
Net gains (losses) included in other comprehensive income	2	9	10	28
Purchases, sales, issuances and settlements, net	(17)	6	(52)	33
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	376	471	376	471
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member] | Asset-backed securities [Member]
Assets:
Balance, beginning of period	845	1,240	962	1,182
Net gains (losses) included in net income	0	2	0	2
Net gains (losses) included in other comprehensive income	1	(7)	3	(7)
Purchases, sales, issuances and settlements, net	26	(118)	(93)	(60)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	872	1,117	872	1,117
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	(4)	0	(4)
Available-for-sale securities [Member] | Auto loans and leases [Member]
Assets:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member] | Other asset-backed securities [Member]
Assets:
Balance, beginning of period	845	1,240	962	1,182
Net gains (losses) included in net income	0	2	0	2
Net gains (losses) included in other comprehensive income	1	(7)	3	(7)
Purchases, sales, issuances and settlements, net	26	(118)	(93)	(60)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	872	1,117	872	1,117
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	(4)	0	(4)
Available-for-sale securities [Member] | Equity Securities [Member]
Assets:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member] | Perpetual preferred securities [Member]
Assets:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0	0	0
Available-for-sale securities [Member] | Other marketable equity securities [Member]
Assets:
Balance, beginning of period	0	0	0	0
Net gains (losses) included in net income	0	0	0	0
Net gains (losses) included in other comprehensive income	0	0	0	0
Purchases, sales, issuances and settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance, end of period	0	0	0	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	$ 0	$ 0	$ 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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Trading securities and trading assets [Member]
Assets:
Purchases	$ 96	$ 146	$ 302	$ 205
Sales	(68)	(160)	(150)	(276)
Issuances	0	0	0	0
Settlements	(24)	(1)	(62)	(1)
Net	4	(15)	90	(72)
Trading assets [Member]
Assets:
Purchases	96	146	302	205
Sales	(68)	(160)	(150)	(276)
Issuances	0	0	0	0
Settlements	(22)	(1)	(60)	(1)
Net	6	(15)	92	(72)
Trading assets [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Purchases	6	2	7	2
Sales	0	(2)	(1)	(2)
Issuances	0	0	0	0
Settlements	0	(1)	0	(1)
Net	6	(1)	6	(1)
Trading assets [Member] | Mortgage-Backed Securities [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Trading assets [Member] | Collateralized Loan Obligations [Member]
Assets:
Purchases	87	134	286	190
Sales	(53)	(154)	(129)	(249)
Issuances	0	0	0	0
Settlements	(22)	0	(60)	0
Net	12	(20)	97	(59)
Trading assets [Member] | Corporate debt securities [Member]
Assets:
Purchases	3	10	9	13
Sales	(15)	(4)	(20)	(25)
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	(12)	6	(11)	(12)
Trading assets [Member] | Asset-backed securities [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Trading assets [Member] | Equity Securities [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Other trading assets [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(2)	0	(2)	0
Net	(2)	0	(2)	0
Available-for-sale securities [Member]
Assets:
Purchases	57	216	133	573
Sales	0	(39)	0	(39)
Issuances	816	497	1,183	673
Settlements	(223)	(291)	(499)	(609)
Net	650	383	817	598
Available-for-sale securities [Member] | Debt Securities [Member]
Assets:
Purchases	57	216	133	573
Sales	0	(39)	0	(39)
Issuances	816	497	1,183	673
Settlements	(223)	(291)	(499)	(609)
Net	650	383	817	598
Available-for-sale securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Purchases	0	0	0	28
Sales	0	(7)	0	(7)
Issuances	655	459	1,001	475
Settlements	(37)	(104)	(98)	(275)
Net	618	348	903	221
Available-for-sale securities [Member] | Mortgage-Backed Securities [Member]
Assets:
Purchases	0	22	0	22
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(6)	(1)	(9)	(1)
Net	(6)	21	(9)	21
Available-for-sale securities [Member] | Residential [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Available-for-sale securities [Member] | Commercial [Member]
Assets:
Purchases	0	22	0	22
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(6)	(1)	(9)	(1)
Net	(6)	21	(9)	21
Available-for-sale securities [Member] | Collateralized Loan Obligations [Member]
Assets:
Purchases	57	188	129	489
Sales	0	(4)	0	(4)
Issuances	0	0	0	0
Settlements	(28)	(58)	(61)	(102)
Net	29	126	68	383
Available-for-sale securities [Member] | Corporate debt securities [Member]
Assets:
Purchases	0	6	4	34
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(17)	0	(56)	(1)
Net	(17)	6	(52)	33
Available-for-sale securities [Member] | Asset-backed securities [Member]
Assets:
Purchases	0	0	0	0
Sales	0	(28)	0	(28)
Issuances	161	38	182	198
Settlements	(135)	(128)	(275)	(230)
Net	26	(118)	(93)	(60)
Available-for-sale securities [Member] | Auto loans and leases [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Available-for-sale securities [Member] | Other asset-backed securities [Member]
Assets:
Purchases	0	0	0	0
Sales	0	(28)	0	(28)
Issuances	161	38	182	198
Settlements	(135)	(128)	(275)	(230)
Net	26	(118)	(93)	(60)
Available-for-sale securities [Member] | Equity Securities [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Available-for-sale securities [Member] | Perpetual preferred securities [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Available-for-sale securities [Member] | Equity Securities, Other 1 [Member]
Assets:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Mortgages held for sale [Member]
Assets:
Purchases	18	22	40	44
Sales	(88)	(152)	(244)	(311)
Issuances	133	164	239	282
Settlements	(38)	(45)	(70)	(88)
Net	25	(11)	(35)	(73)
Loans [Member]
Assets:
Purchases	2	8	3	12
Sales	0	0	(129)	0
Issuances	3	84	9	172
Settlements	(67)	(278)	(192)	(464)
Net	(62)	(186)	(309)	(280)
Mortgage servicing rights [Member]
Assets:
Purchases	0	0	0	0
Sales	(8)	(22)	(55)	(22)
Issuances	436	477	1,019	843
Settlements	0	0	0	0
Net	428	455	964	821
Derivative [Member]
Assets and Liabilities:
Purchases	2	16	4	32
Sales	(70)	0	(71)	(147)
Issuances	0	0	0	0
Settlements	(417)	(416)	(496)	(811)
Net	(485)	(400)	(563)	(926)
Derivative [Member] | Interest rate contract [Member]
Assets and Liabilities:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(361)	(471)	(473)	(850)
Net	(361)	(471)	(473)	(850)
Derivative [Member] | Commodity contract [Member]
Assets and Liabilities:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	1	(6)	(2)
Net	0	1	(6)	(2)
Derivative [Member] | Equity contract [Member]
Assets and Liabilities:
Purchases	0	16	0	29
Sales	(69)	1	(69)	(146)
Issuances	0	0	0	0
Settlements	(11)	(7)	26	(13)
Net	(80)	10	(43)	(130)
Derivative [Member] | Foreign exchange contract [Member]
Assets and Liabilities:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Derivative [Member] | Credit contract [Member]
Assets and Liabilities:
Purchases	2	0	4	3
Sales	(1)	(1)	(2)	(1)
Issuances	0	0	0	0
Settlements	(44)	63	(42)	54
Net	(43)	62	(40)	56
Derivative [Member] | Other contract [Member]
Assets and Liabilities:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(1)	(2)	(1)	0
Net	(1)	(2)	(1)	0
Other assets [Member]
Assets:
Purchases	0	122	0	211
Sales	(1)	0	(1)	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	(1)	122	(1)	211
Short sale liabilities [Member]
Liabilities:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Net	0	0	0	0
Other liabilities [Member]
Liabilities:
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	25
Net	$ 0	$ 0	$ 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	6 Months Ended	12 Months Ended
	Jun. 30, 2017USD ($)$ / loan	Dec. 31, 2016USD ($)$ / loan
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 269,202	$ 308,364
Mortgages held for sale, carried at fair value	19,543	22,042
Loans	443	758
Mortgage servicing rights	12,789	12,959
Fair Value Inputs [Abstract]
Fair value derivative assets	35,885	85,129
Aggregate Fair Value Of Derivative Loan Commitments Net Asset (Liability)	12	(6)
Fair value derivative liabilities	$ 34,729	$ 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)	(0.418%)	(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)	1.118%	1.312%
Derivative Loan Commitments [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Fall-out factor	17.20%	15.00%
Initial-value servicing (in bps)	0.308%	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	10.00%	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	6 months	1 year
Conversion factor	(10.10%)	(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 6 months	3 years
Conversion factor	0.00%	0.00%
Equity contract [Member] | Maximum [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Volatility factor	118.20%	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 7 months	2 years
Conversion factor	(7.90%)	(7.90%)
Equity contract [Member] | Weighted Average [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Volatility factor	20.00%	20.70%
Correlation factor	37.20%	39.90%
Credit contract [Member] | Minimum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(21.10%)	(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	36.00%	21.30%
Credit contract [Member] | Maximum [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Loss severity	60.00%	60.00%
Credit spread	10.10%	11.60%
Credit contract [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(1.50%)	0.02%
Credit contract [Member] | Weighted Average [Member] | Option model [Member]
Fair Value Inputs [Abstract]
Loss severity	48.60%	50.40%
Credit spread	1.00%	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	2.10%	2.00%
Auction rate and other municipal bonds [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.20%	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	4.40%	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	(19.50%)	(15.50%)
Collateralized Loan Obligations [Member] | Maximum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	20.80%	20.30%
Collateralized Loan Obligations [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	2.80%	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	4.00%	4.80%
Diversified payment rights [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	2.90%	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	3 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	3 years 8 months	4 years 2 months
Other commercial and consumer [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	4.00%	3.90%
Weighted average life	2 years 2 months	2 years 11 months
Mortgages held for sale [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	1.10%	1.10%
Prepayment rate	7.10%	6.30%
Loss severity	0.00%	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	6.90%	6.90%
Prepayment rate	18.30%	17.10%
Loss severity	45.20%	42.50%
Default rate	7.00%	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	5.20%	5.10%
Prepayment rate	10.20%	10.00%
Loss severity	27.10%	26.90%
Default rate	1.70%	1.90%
Mortgages held for sale [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(38.50%)	(37.80%)
Loans [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	0.00%	0.00%
Prepayment rate	9.10%	0.40%
Utilization rate		0.00%
Loans [Member] | Maximum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	7.10%	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	0.30%	0.60%
Prepayment rate	94.40%	83.70%
Utilization rate		0.10%
Residential mortgage servicing rights [Member] | Minimum [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	6.50%	6.50%
Prepayment rate	9.60%	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	15.20%	18.40%
Prepayment rate	21.70%	20.60%
Cost to service per loan | $ / loan	566	598
Residential mortgage servicing rights [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	6.80%	6.80%
Prepayment rate	10.50%	10.30%
Cost to service per loan | $ / loan	149	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	1.20%	0.30%
Other assets: nonmarketable equity investments [Member] | Minimum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(20.10%)	(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	1.30%	2.40%
Other assets: nonmarketable equity investments [Member] | Maximum [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(4.00%)	(5.50%)
Other assets: nonmarketable equity investments [Member] | Weighted Average [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Discount rate	9.40%	8.70%
Volatility factor	1.30%	1.10%
Other assets: nonmarketable equity investments [Member] | Weighted Average [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(15.10%)	(16.40%)
Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	$ (28,483)	$ (30,875)
Available-for-sale Securities	269,202	308,364
Mortgages held for sale, carried at fair value	19,543	22,042
Loans	443	758
Mortgage servicing rights	12,789	12,959
Recurring [Member] | Interest rate contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	19,218	65,268
Fair value derivative liabilities	16,253	65,209
Recurring [Member] | Equity contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	6,343	5,358
Fair value derivative liabilities	7,020	6,112
Recurring [Member] | Credit contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	504	552
Fair value derivative liabilities	501	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	52,013	51,101
Recurring [Member] | Collateralized Loan Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	33,455	35,020
Recurring [Member] | Asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	6,498	6,207
Recurring [Member] | Auto loans and leases [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	530	9
Recurring [Member] | Other asset-backed securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	5,649	5,871
Recurring [Member] | Equity Securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	1,028	1,211
Recurring [Member] | Perpetual preferred securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	465	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	(1,904)	(1,708)
Available-for-sale Securities	3,883	3,505
Mortgages held for sale, carried at fair value	995	985
Loans	443	758
Mortgage servicing rights	12,789	12,959
Total insignificant level 3 assets, net of liabilities	501	570
Total level 3 assets, net of liabilities	22,247	21,755
Fair Value Inputs [Abstract]
Assets, Fair Value Disclosure	24,151	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	12	(6)
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Interest rate contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	192	238
Fair value derivative liabilities	77	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	103	127
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Equity contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	1,180	1,047
Fair value derivative liabilities	1,651	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	95	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	(566)	(346)
Fair Value, Inputs, Level 3 [Member] | Recurring [Member] | Credit contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	184	272
Fair value derivative liabilities	112	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	(4)	(28)
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	76	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	1,557	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	1,324	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	34	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	208	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	1,002	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	403	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	1,002	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	872	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	872	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	358	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	488	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	26	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	969	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	26	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	443	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	12,789	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	10	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	3,950	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	(37,556)	(89,273)
Available-for-sale Securities	249,584	281,078
Mortgages held for sale, carried at fair value	18,548	21,057
Loans	0	0
Mortgage servicing rights	0	0
Fair Value Inputs [Abstract]
Assets, Fair Value Disclosure	343,205	422,888
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Interest rate contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	18,998	64,986
Fair value derivative liabilities	16,146	65,047
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Equity contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	3,618	2,997
Fair value derivative liabilities	4,280	3,879
Fair Value, Inputs, Level 2 [Member] | Recurring [Member] | Credit contract [Member]
Fair Value Inputs [Abstract]
Fair value derivative assets	320	280
Fair value derivative liabilities	389	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	50,456	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	32,453	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	5,626	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	530	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	4,777	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	287	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	$ 287	$ 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	288	293
Collateralized Debt Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 998	$ 847

Fair Value, Assets Recorded at

Fair Value, Assets Recorded at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	$ 19,543	$ 22,042
Loans	443	758
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	3,986	3,275
Investment Measured at NAV	22	48
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	3,432	3,662
Loans held for sale	10	8
Loans	796	1,293
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	366	645
Investment Measured at NAV	4	13
Nonrecurring [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	442	464
Nonrecurring [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	354	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	2,108	2,312
Loans held for sale	10	8
Loans	791	1,286
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	188	233
Assets, Fair Value Disclosure	3,097	3,839
Level 2 [Member] | Nonrecurring [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	442	464
Level 2 [Member] | Nonrecurring [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	349	822
Level 3 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages held for sale	1,324	1,350
Loans held for sale	0	0
Loans	5	7
Other assets, carried at fair value (excluding nonmarketable equity investments at NAV)	178	412
Assets, Fair Value Disclosure	1,507	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	4,604	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	$ 4,608	$ 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	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Mortgages held for sale (LOCOM)	$ 14	$ 30
Loans held for sale	(1)	0
Loans	(447)	(991)
Other assets	(66)	(259)
Total	(500)	(1,220)
Total Commercial [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Loans	(186)	(560)
Total Consumer [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Loans	$ (261)	$ (431)

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	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 269,202	$ 308,364
Mortgages held for sale	$ 19,543	$ 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	1.10%	1.10%
Loss severity	0.00%	0.10%
Prepayment rate	7.10%	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	7.00%	7.90%
Discount rate	6.90%	6.90%
Loss severity	45.20%	42.50%
Prepayment rate	18.30%	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	1.70%	1.90%
Discount rate	5.20%	5.10%
Loss severity	27.10%	26.90%
Prepayment rate	10.20%	10.00%
Weighted Average [Member] | Mortgages held for sale [Member] | Market comparable pricing [Member]
Fair Value Inputs [Abstract]
Comparability adjustment	(38.50%)	(37.80%)
Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 269,202	$ 308,364
Mortgages held for sale	19,543	22,042
Fair Value Inputs [Abstract]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(28,483)	(30,875)
Nonrecurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	$ 3,432	$ 3,662
Nonrecurring [Member] | Minimum [Member] | Discounted cash flow [Member] | Other Assets: Nonmarketable Equity Investments [Member]
Fair Value Inputs [Abstract]
Discount rate	5.00%	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	3.60%	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	8.50%	4.30%
Discount rate	8.50%	8.50%
Loss severity	48.80%	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	10.00%	7.30%
Nonrecurring [Member] | Weighted Average [Member] | Residential [Member] | Mortgages held for sale [Member] | Discounted cash flow [Member]
Fair Value Inputs [Abstract]
Default rate	1.70%	1.90%
Discount rate	3.80%	3.80%
Loss severity	2.50%	2.40%
Prepayment rate	48.80%	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	$ 3,883	$ 3,505
Mortgages held for sale	995	985
Total assets recorded at fair value	24,151	23,463
Fair Value Inputs [Abstract]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(1,904)	(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	969	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	26	30
Fair Value, Inputs, Level 3 [Member] | Nonrecurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgages held for sale	1,324	1,350
Insignificant level 3 assets	142	199
Total assets recorded at fair value	1,507	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	41	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	1,324	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	31	33
Collateralized Debt Obligations [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Available-for-sale Securities	$ 998	$ 847

Fair Value, Investments in Enti

Fair Value, Investments in Entities That Calculate Net Asset Value Per Share (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value	$ 22	$ 48
Unfunded commitments	$ 30	$ 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	2,025

Fair Value, Option, Carrying Am

Fair Value, Option, Carrying Amount (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgages held for sale	$ 19,543		$ 19,543		$ 22,042
Loans	443		443		758
Other assets, carried at fair value	3,986		3,986		3,275
Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Trading assets, loans	1,742		1,742		1,332
Trading assets, loans, unpaid principal	1,804		1,804		1,418
Trading assets, loans, aggregate difference	(62)		(62)		(86)
Nonaccrual loans	65		65		100
Nonaccrual loans, unpaid principal	73		73		115
Nonaccrual loans, Aggregate difference	(8)		(8)		(15)
Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgages held for sale	19,543		19,543		22,042
Mortgages held for sale, unpaid principal	19,034		19,034		21,961
Loans, Loans held for sale and Mortgages held for sale, aggregate difference	509		509		81
Nonaccrual loans	127		127		136
Nonaccrual loans, unpaid principal	168		168		182
Nonaccrual loans, Aggregate difference	(41)		(41)		(46)
Loans 90 days or more past due and still accruing	11		11		12
Loans 90 days or more past due and still accruing, Unpaid principal	15		15		16
Loans 90 days or more past due and still accruing, Aggregate difference	(4)		(4)		(4)
Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale	0		0		0
Loans held for sale, unpaid principal	6		6		6
Loans, Loans held for sale and Mortgages held for sale, aggregate difference	(6)		(6)		(6)
Nonaccrual loans	0		0		0
Nonaccrual loans, unpaid principal	6		6		6
Nonaccrual loans, Aggregate difference	(6)		(6)		(6)
Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans	443		443		758
Loans, Unpaid principal	469		469		775
Loans, Loans held for sale and Mortgages held for sale, aggregate difference	(26)		(26)		(17)
Nonaccrual loans	272		272		297
Nonaccrual loans, unpaid principal	296		296		318
Nonaccrual loans, Aggregate difference	(24)		(24)		(21)
Other assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Other assets, carried at fair value	3,986		3,986		$ 3,275
Net gains losses from trading activities [Member] | Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	11	$ 16	36	$ 26
Net gains losses from trading activities [Member] | Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	0	0	0	0
Net gains losses from trading activities [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	0	0	0	0
Net gains losses from trading activities [Member] | Other assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ 0	$ 0	$ 0	$ 0

Fair Value, Option, Gains and L

Fair Value, Option, Gains and Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 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	$ 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	288	611	567	1,176
Mortgage banking noninterest income [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0	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	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	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	11	16	36	26
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	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	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	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)	1	(4)	(1)
Other noninterest income [Member] | Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	1	1	1	1
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	0	0
Other noninterest income [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	(3)	0	(4)
Other noninterest income [Member] | Other assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	221	(176)	711	(234)
Other noninterest income [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	$ 0	$ 0	$ 0	$ 0

Fair Value, Option, Instrument

Fair Value, Option, Instrument Specific Credit Risk (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	$ 7	$ 15	$ 31	$ 21
Trading assets - loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	11	16	36	26
Mortgages held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	$ (4)	$ (1)	$ (5)	$ (5)

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		Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Financial assets
Cash and due from banks		$ 20,248	$ 20,729	$ 20,407	$ 19,111
Federal funds sold, securities purchased under resale agreements and other short-term investments		264,706	266,038
Held-to-maturity securities		140,392	99,583
Loans	[1]	957,423	967,604
Excluding investments at NAV		7,607	8,397
Investment Measured at NAV		22	48
Financial liabilities
Deposits		1,305,830	1,306,079
Short-term borrowings		95,356	96,781
Long-term debt		238,869	255,077
Capital Lease Obligations		7	7
Carrying value [Member]
Financial assets
Cash and due from banks		20,248	20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		264,706	266,038
Held-to-maturity securities		140,392	99,583
Mortgages held for sale		5,264	4,267
Loans held for sale		156	80
Loans		926,970	936,358
Excluding investments at NAV		7,587	8,362
Investment Measured at NAV		20	35
Financial liabilities
Deposits		1,305,830	1,306,079
Short-term borrowings		95,356	96,781
Long-term debt		238,862	255,070
Financial Liabilities Fair Value Disclosure		1,640,048	1,657,930
Estimated fair value [Member]
Financial assets
Cash and due from banks		20,248	20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		264,706	266,038
Held-to-maturity securities		140,390	99,155
Mortgages held for sale		5,273	4,277
Loans held for sale		157	81
Loans		938,651	947,834
Excluding investments at NAV		8,124	8,942
Investment Measured at NAV		22	48
Financial liabilities
Deposits		1,305,853	1,306,153
Short-term borrowings		95,356	96,781
Long-term debt		242,077	255,779
Financial Liabilities Fair Value Disclosure		1,643,286	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		20,248	20,729
Federal funds sold, securities purchased under resale agreements and other short-term investments		14,247	18,670
Held-to-maturity securities		45,335	45,079
Mortgages held for sale		0	0
Loans held for sale		0	0
Loans		0	0
Excluding investments at NAV		0	0
Assets		79,830	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		250,382	247,286
Held-to-maturity securities		94,033	51,706
Mortgages held for sale		3,949	2,927
Loans held for sale		157	81
Loans		56,351	60,245
Excluding investments at NAV		20	18
Assets		404,892	362,263
Financial liabilities
Deposits		1,283,587	1,282,158
Short-term borrowings		95,356	96,781
Long-term debt		235,085	245,704
Financial Liabilities Fair Value Disclosure		1,614,028	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		77	82
Held-to-maturity securities		1,022	2,370
Mortgages held for sale		1,324	1,350
Loans held for sale		0	0
Loans		882,300	887,589
Excluding investments at NAV		8,104	8,924
Assets		892,827	900,315
Financial liabilities
Deposits		22,266	23,995
Short-term borrowings		0	0
Long-term debt		6,992	10,075
Financial Liabilities Fair Value Disclosure		29,258	34,070
Finance Leases Financing Receivable [Member]
Financial assets
Loans		19,200	19,300
Excluding NAV Investments [Member] | Carrying value [Member]
Financial assets
Assets		1,365,323	1,335,417
Excluding NAV Investments [Member] | Estimated fair value [Member]
Financial assets
Assets		1,377,549	1,347,056
Including NAV Investments [Member] | Carrying value [Member]
Financial assets
Assets		1,365,343	1,335,452
Including NAV Investments [Member] | Estimated fair value [Member]
Financial assets
Assets		$ 1,377,571	$ 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	1 Months Ended	6 Months Ended	12 Months Ended
	Apr. 30, 2017USD ($)shares	Jun. 30, 2017USD ($)vote$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares
Detail of Preferred Stock [Abstract]
Preferred Stock, Shares authorized and designated | shares		12,463,306	11,941,891
ESOP, Liquidation preference per share | $ / shares		$ 0	$ 0
ESOP, Shares authorized and designated | shares		1,982,996	1,439,181
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares		12,104,127	11,532,712
Voting Rights		If issued, preference shares would be limited to one vote per share
Preferred Stock, Liquidation Preference, Value		$ 27,184	$ 25,950
Carrying value		25,785	24,551
Discount		$ 1,399	$ 1,399
ESOP Shares issued and outstanding | shares		1,982,996	1,439,181
ESOP Liquidation preference value		$ 1,983	$ 1,439
ESOP Carrying value		1,983	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
Series Y - 5.625% Non-Cumulative Perpetual Class A Preferred Stock [Member]
Class of Stock [Line Items]
Depositary Shares Issued and Outstanding | shares	27,600,000
Percentage Interest in Share of issued Preferred Stock	0.10%
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)		5.625%	0.00%
Preferred Stock, Liquidation preference per share (in dollars per share) | $ / shares		$ 25,000	$ 0
Preferred Stock, Shares authorized and designated | shares		27,600	0
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares		27,600	0
Preferred Stock, Liquidation Preference, Value		$ 690	$ 0
Carrying value		690	0
Discount		$ 0	$ 0
Preferred Stock, Par or Stated Value	$ 690

ESOP Preferred Stock (Details)

ESOP Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Additional paid-in capital included related to preferred stock	$ 136	$ 126
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	1,982,996	1,439,181
Carrying value	$ 1,983	$ 1,439
Unearned ESOP shares	$ (2,119)	$ (1,565)
Employee Stock Ownership Plan Preferred Stock 2017 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	700,102	0
Carrying value	$ 700	$ 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	322,826	358,528
Carrying value	$ 323	$ 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	187,436	200,820
Carrying value	$ 187	$ 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	237,151	255,413
Carrying value	$ 237	$ 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	201,948	222,558
Carrying value	$ 202	$ 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	128,634	144,072
Carrying value	$ 129	$ 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	129,296	149,301
Carrying value	$ 129	$ 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	75,603	90,775
Carrying value	$ 76	$ 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	0	17,714
Carrying value	$ 0	$ 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		6 Months Ended		96 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 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	$ 2	$ 1	$ 3	$ 2
Interest cost	103	109	206	218
Expected return on plan assets	(163)	(141)	(326)	(283)
Amortization of net actuarial loss (gain)	38	33	76	66
Amortization of prior service credit	0	0	0	0
Settlement loss	0	4	1	4
Net periodic benefit cost (income)	(20)	6	(40)	7
Pension benefits nonqualified [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	0	0	0
Interest cost	6	6	12	13
Expected return on plan assets	0	0	0	0
Amortization of net actuarial loss (gain)	4	3	6	6
Amortization of prior service credit	0	0	0	0
Settlement loss	4	0	6	2
Net periodic benefit cost (income)	14	9	24	21
Other benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	0	0	0
Interest cost	7	10	14	20
Expected return on plan assets	(8)	(7)	(15)	(15)
Amortization of net actuarial loss (gain)	(3)	(1)	(5)	(2)
Amortization of prior service credit	(2)	0	(5)	0
Settlement loss	0	0	0	0
Net periodic benefit cost (income)	$ (6)	$ 2	$ (11)	$ 3

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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Common Share [Abstract]
Wells Fargo net income	$ 5,810	$ 5,558	$ 11,267	$ 11,020
Less: Preferred stock dividends and other	406	385	807	762
Wells Fargo net income applicable to common stock (numerator)	$ 5,404	$ 5,173	$ 10,460	$ 10,258
Earnings per common share
Average common shares outstanding (denominator)	4,989.9	5,066.9	4,999.2	5,071.3
Per share	$ 1.08	$ 1.02	$ 2.09	$ 2.02
Diluted earnings per common share
Average common shares outstanding (in shares)	4,989.9	5,066.9	4,999.2	5,071.3
Diluted average common shares outstanding (denominator)	5,037.7	5,118.1	5,054.8	5,129.8
Per share	$ 1.07	$ 1.01	$ 2.07	$ 2
Stock Option [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	17.2	19.6	19.3	20.4
Restricted Share Rights [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	19.9	21	24.7	27.4
Warrants [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	10.7	10.6	11.6	10.7

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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Instruments	1.8	2.7	2.1	3.7

Other Comprehensive Income, Com

Other Comprehensive Income, Components of Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investment securities:
Net unrealized gains arising during the period, Before tax	$ 1,565	$ 1,571	$ 1,934	$ 2,366
Net unrealized gains arising during the period, Tax effect	(589)	(596)	(722)	(906)
Net unrealized gains arising during the period, Net of tax	976	975	1,212	1,460
Reclassification of net (gains) losses to net income, Before tax	(177)	(504)	(322)	(808)
Reclassification of net (gains) losses to net income, Tax effect	62	190	116	303
Reclassification of net (gains) losses to net income, Net of tax	(115)	(314)	(206)	(505)
Net change, Before tax	1,388	1,067	1,612	1,558
Net change, Tax effect	(527)	(406)	(606)	(603)
Net change, Net of tax	861	661	1,006	955
Derivatives and hedging activities:
Net unrealized gains arising during the period	376	1,057	243	3,056
Net unrealized gains arising during the period, Tax effect	(142)	(399)	(92)	(1,152)
Net unrealized gains arising during the period, Net of tax	234	658	151	1,904
Reclassification of net (gains) losses to net income, Before tax	(153)	(265)	(355)	(521)
Reclassification of net (gains) losses to net income, Tax effect	58	100	134	196
Reclassification of net (gains) losses to net income, Net of tax	(95)	(165)	(221)	(325)
Net change, Before tax	223	792	(112)	2,535
Net change, Tax effect	(84)	(299)	42	(956)
Net change, Net of tax	139	493	(70)	1,579
Defined benefit plans adjustments:
Net actuarial and prior service losses arising during the period, Before tax	0	(19)	(7)	(27)
Net actuarial and prior service losses arising during the period, Tax effect	0	7	3	10
Net actuarial and prior service losses arising during the period, Net of tax	0	(12)	(4)	(17)
Amortization of net actuarial loss, Before tax	39	35	77	70
Amortization of net actuarial loss, Tax effect	(16)	(14)	(30)	(27)
Amortization of net actuarial loss, Net of tax	23	21	47	43
Settlements and other, Before tax	2	4	2	6
Settlements and other, Tax effect	1	(1)	1	(2)
Settlements and other, Net of tax	3	3	3	4
Reclassification of amounts to net periodic benefit costs, Before tax	41	39	79	76
Reclassification of amounts to net periodic benefit costs, Tax effect	(15)	(15)	(29)	(29)
Reclassification of amounts to net periodic benefit costs, Net of tax	26	24	50	47
Net change, Before tax	41	20	72	49
Net change, Tax effect	(15)	(8)	(26)	(19)
Net change, Net of tax	26	12	46	30
Foreign currency translation adjustments:
Net unrealized gains (losses) arising during the period, Before tax	31	(6)	47	37
Net unrealized gains (losses) arising during the period, Tax effect	2	(1)	3	7
Net unrealized gains (losses) arising during the period, Net of tax	33	(7)	50	44
Net change, Before tax	31	(6)	47	37
Net change, Tax effect	2	(1)	3	7
Net change, Net of tax	33	(7)	50	44
Other comprehensive income, before tax	1,683	1,873	1,619	4,179
Other comprehensive income, tax effect	(624)	(714)	(587)	(1,571)
Other comprehensive income, net of tax	1,059	1,159	1,032	2,608
Less: Other comprehensive income (loss) from noncontrolling interests	(9)	(15)	5	(43)
Wells Fargo other comprehensive income, net of tax	1,068	1,174	1,027	2,651
Interest income [Member] | Loans [Member]
Derivatives and hedging activities:
Reclassification of net (gains) losses to net income, Before tax	(156)	(268)	(361)	(528)
Reclassification of net (gains) losses to net income, Tax effect	59	101	136	199
Reclassification of net (gains) losses to net income, Net of tax	(97)	(167)	(225)	(329)
Interest income [Member] | Investment securities [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	45	3	52	3
Reclassification of net (gains) losses to net income, Tax effect	(17)	(1)	(20)	(1)
Reclassification of net (gains) losses to net income, Net of tax	28	2	32	2
Net gains from debt and equity investments [Member] | Debt Securities [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	(120)	(447)	(156)	(691)
Reclassification of net (gains) losses to net income, Tax effect	44	168	57	259
Reclassification of net (gains) losses to net income, Net of tax	(76)	(279)	(99)	(432)
Net gains from debt and equity investments [Member] | Equity Securities [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	(101)	(60)	(217)	(119)
Reclassification of net (gains) losses to net income, Tax effect	35	23	79	45
Reclassification of net (gains) losses to net income, Net of tax	(66)	(37)	(138)	(74)
Other noninterest income [Member]
Investment securities:
Reclassification of net (gains) losses to net income, Before tax	(1)	0	(1)	(1)
Reclassification of net (gains) losses to net income, Tax effect	0	0	0	0
Reclassification of net (gains) losses to net income, Net of tax	(1)	0	(1)	(1)
Interest expense on long-term debt [Member]
Derivatives and hedging activities:
Reclassification of net (gains) losses to net income, Before tax	3	3	6	7
Reclassification of net (gains) losses to net income, Tax effect	(1)	(1)	(2)	(3)
Reclassification of net (gains) losses to net income, Net of tax	$ 2	$ 2	$ 4	$ 4

Other Comprehensive Income, Cum

Other Comprehensive Income, Cumulative OCI Balances (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investment securities:
Cumulative other comprehensive income (loss), Investment securities, beginning of period	$ (967)	$ 2,137	$ (1,099)	$ 1,813
Net unrealized gains arising during the period	976	975	1,212	1,460
Amounts reclassified from accumulated other comprehensive income	(115)	(314)	(206)	(505)
Net change, Net of tax	861	661	1,006	955
Less: Other comprehensive income (loss) from noncontrolling interests	(10)	(14)	3	(44)
Cumulative other comprehensive income (loss), Investment securities, end of period	(96)	2,812	(96)	2,812
Derivatives and hedging activities:
Cumulative other comprehensive income (loss), Derivatives and hedging activities, beginning of period	(120)	1,706	89	620
Net unrealized gains arising during the period	234	658	151	1,904
Amounts reclassified from accumulated other comprehensive income	(95)	(165)	(221)	(325)
Net change, Net of tax	139	493	(70)	1,579
Less: Other comprehensive income from noncontrolling interests	0	0	0	0
Cumulative other comprehensive income (loss), Derivatives and hedging activities, end of period	19	2,199	19	2,199
Defined benefit plans adjustments:
Cumulative other comprehensive loss, Defined benefit plans adjustment, beginning of period	(1,923)	(1,933)	(1,943)	(1,951)
Net unrealized losses arising during the period	0	(12)	(4)	(17)
Amounts reclassified from accumulated other comprehensive income	26	24	50	47
Net change, Net of tax	26	12	46	30
Less: Other comprehensive income from noncontrolling interests	0	0	0	0
Cumulative other comprehensive loss, Defined benefit plans adjustment, end of period	(1,897)	(1,921)	(1,897)	(1,921)
Foreign currency translation adjustments:
Cumulative other comprehensive loss, Foreign currency translation adjustments, beginning of period	(168)	(136)	(184)	(185)
Net unrealized gains (losses) arising during the period	33	(7)	50	44
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Net change, Net of tax	33	(7)	50	44
Less: Other comprehensive income from noncontrolling interests	1	(1)	2	1
Cumulative other comprehensive loss, Foreign currency translation adjustments, end of period	(136)	(142)	(136)	(142)
Cumulative other comprehensive income (loss), beginning of period	(3,178)	1,774	(3,137)	297
Net unrealized gains arising during the period	1,243	1,614	1,409	3,391
Amounts reclassified from accumulated other comprehensive income	(184)	(455)	(377)	(783)
Other comprehensive income, net of tax	1,059	1,159	1,032	2,608
Less: Other comprehensive income (loss) from noncontrolling interests, net of tax	(9)	(15)	5	(43)
Cumulative other comprehensive income (loss), end of period	$ (2,110)	$ 2,948	$ (2,110)	$ 2,948

Operating Segments (Details)

Operating Segments (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)segment	Jun. 30, 2016USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments | segment			3
Financial Information of Operating Segment [Abstract]
Net interest income	$ 12,483	$ 11,733	$ 24,783	$ 23,400
Provision (reversal of provision) for credit losses	555	1,074	1,160	2,160
Noninterest income	9,686	10,429	19,388	20,957
Noninterest expense	13,541	12,866	27,333	25,894
Income before income tax expense	8,073	8,222	15,678	16,303
Income tax expense (benefit)	2,225	2,649	4,282	5,216
Net income before noncontrolling interests	5,848	5,573	11,396	11,087
Less: Net income from noncontrolling interests	38	15	129	67
Wells Fargo net income	5,810	5,558	11,267	11,020
Average loans	956,900	950,800	960,200	939,000
Average assets	1,927,100	1,862,100	1,929,000	1,841,000
Average Deposits	1,301,200	1,236,700	1,300,200	1,228,000
Other [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	(470)	(497)	(1,019)	(989)
Provision (reversal of provision) for credit losses	(10)	(2)	(4)	15
Noninterest income	(783)	(748)	(1,556)	(1,487)
Noninterest expense	(835)	(794)	(1,695)	(1,612)
Income before income tax expense	(408)	(449)	(876)	(879)
Income tax expense (benefit)	(155)	(171)	(333)	(334)
Net income before noncontrolling interests	(253)	(278)	(543)	(545)
Less: Net income from noncontrolling interests	0	0	0	0
Wells Fargo net income	(253)	(278)	(543)	(545)
Average loans	(56,900)	(53,000)	(56,500)	(52,000)
Average assets	(86,800)	(83,400)	(88,100)	(83,800)
Average Deposits	(77,200)	(75,300)	(78,400)	(75,700)
Community Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	7,548	7,379	15,175	14,847
Provision (reversal of provision) for credit losses	623	689	1,269	1,409
Noninterest income	4,741	4,825	9,207	9,971
Noninterest expense	7,223	6,648	14,444	13,484
Income before income tax expense	4,443	4,867	8,669	9,925
Income tax expense (benefit)	1,404	1,667	2,531	3,364
Net income before noncontrolling interests	3,039	3,200	6,138	6,561
Less: Net income from noncontrolling interests	46	21	136	86
Wells Fargo net income	2,993	3,179	6,002	6,475
Average loans	477,200	485,700	479,900	485,000
Average assets	983,500	967,600	987,000	957,500
Average Deposits	727,200	703,700	722,200	693,300
Wholesale Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	4,278	3,919	8,426	7,667
Provision (reversal of provision) for credit losses	(65)	385	(108)	748
Noninterest income	2,673	3,365	5,563	6,575
Noninterest expense	4,078	4,036	8,303	8,004
Income before income tax expense	2,938	2,863	5,794	5,490
Income tax expense (benefit)	559	795	1,305	1,514
Net income before noncontrolling interests	2,379	2,068	4,489	3,976
Less: Net income from noncontrolling interests	(9)	(5)	(14)	(18)
Wells Fargo net income	2,388	2,073	4,503	3,994
Average loans	464,900	451,400	465,600	440,600
Average assets	817,300	772,600	812,600	760,600
Average Deposits	463,000	425,800	464,500	426,900
Wealth and Investment Management [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	1,127	932	2,201	1,875
Provision (reversal of provision) for credit losses	7	2	3	(12)
Noninterest income	3,055	2,987	6,174	5,898
Noninterest expense	3,075	2,976	6,281	6,018
Income before income tax expense	1,100	941	2,091	1,767
Income tax expense (benefit)	417	358	779	672
Net income before noncontrolling interests	683	583	1,312	1,095
Less: Net income from noncontrolling interests	1	(1)	7	(1)
Wells Fargo net income	682	584	1,305	1,096
Average loans	71,700	66,700	71,200	65,400
Average assets	213,100	205,300	217,500	206,700
Average Deposits	$ 188,200	$ 182,500	$ 191,900	$ 183,500

Regulatory and Agency Capita131

Regulatory and Agency Capital Requirements (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Wells Fargo & Company [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 152,742	$ 148,785
Tier 1	176,134	171,364
Total	208,535	204,425
Assets:
Risk-weighted	1,232,977	1,274,589
Adjusted average	$ 1,897,370	$ 1,914,802
Regulatory capital ratios:
Common equity tier 1 capital	12.39%	11.67%
Tier 1 capital	14.29%	13.44%
Total capital	16.91%	16.04%
Tier 1 leverage	9.28%	8.95%
Wells Fargo & Company [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 152,742	$ 148,785
Tier 1	176,134	171,364
Total	218,399	214,877
Assets:
Risk-weighted	1,287,327	1,336,198
Adjusted average	$ 1,897,370	$ 1,914,802
Regulatory capital ratios:
Common equity tier 1 capital	11.87%	11.13%
Tier 1 capital	13.68%	12.82%
Total capital	16.97%	16.08%
Tier 1 leverage	9.28%	8.95%
Wells Fargo Bank, NA [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 139,581	$ 132,225
Tier 1	139,581	132,225
Total	152,850	145,665
Assets:
Risk-weighted	1,114,978	1,143,681
Adjusted average	$ 1,703,737	$ 1,714,524
Regulatory capital ratios:
Common equity tier 1 capital	12.52%	11.56%
Tier 1 capital	12.52%	11.56%
Total capital	13.71%	12.74%
Tier 1 leverage	8.19%	7.71%
Wells Fargo Bank, NA [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 139,581	$ 132,225
Tier 1	139,581	132,225
Total	162,320	155,281
Assets:
Risk-weighted	1,188,024	1,222,876
Adjusted average	$ 1,703,737	$ 1,714,524
Regulatory capital ratios:
Common equity tier 1 capital	11.75%	10.81%
Tier 1 capital	11.75%	10.81%
Total capital	13.66%	12.70%
Tier 1 leverage	8.19%	7.71%

Regulatory and Agency Capita132

Regulatory and Agency Capital Requirements Minimum Required Regulatory Capital Ratios – Transition Requirements (Details)	Jun. 30, 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%