Wells Fargo & Company (WFC) 10-Q 3 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 24, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	WELLS FARGO & COMPANY/MN
Entity Central Index Key	0000072971
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		4,494,342,882

Consolidated Statement of Incom

Consolidated Statement of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Interest income
Debt securities		$ 3,941	$ 3,414
Mortgage loans held for sale		152	179
Loans held for sale		24	24
Loans		11,354	10,579
Equity securities		210	231
Other interest income		1,322	920
Total interest income		17,003	15,347
Interest expense
Deposits		2,026	1,090
Short-term borrowings		596	311
Long-term debt		1,927	1,576
Other interest expense		143	132
Total interest expense		4,692	3,109
Net interest income		12,311	12,238
Provision for credit losses		845	191
Net interest income after provision for credit losses		11,466	12,047
Noninterest income
Mortgage banking		708	934
Insurance		96	114
Net gains from trading activities		357	243
Net gains on debt securities (1)	[1]	125	1
Net gains from equity securities(2)	[2]	814	783
Lease income		443	455
Other		574	602
Total noninterest income		9,298	9,696
Noninterest expense
Salaries		4,425	4,363
Commission and incentive compensation		2,845	2,768
Employee benefits		1,938	1,598
Equipment		661	617
Net occupancy		717	713
Core deposit and other intangibles		28	265
FDIC and other deposit assessments		159	324
Other		3,143	4,394
Total noninterest expense		13,916	15,042
Income before income tax expense		6,848	6,701
Income tax expense		881	1,374
Net income before noncontrolling interests		5,967	5,327
Less: Net income from noncontrolling interests		107	191
Wells Fargo net income		5,860	5,136
Less: Preferred stock dividends and other		353	403
Wells Fargo net income applicable to common stock		$ 5,507	$ 4,733
Per share information
Earnings per common share (in dollars per share)		$ 1.21	$ 0.97
Diluted earnings per common share (in dollars per share)		$ 1.20	$ 0.96
Average common shares outstanding (in shares)		4,551.5	4,885.7
Diluted average common shares outstanding (in shares)		4,584	4,930.7
Service charges on deposit accounts
Noninterest income
Fee income		$ 1,094	$ 1,173
Trust and investment fees
Noninterest income
Fee income		3,373	3,683
Card fees
Noninterest income
Fee income		944	908
Other fees
Noninterest income
Fee income		$ 770	$ 800
[1]	(1)Total other-than-temporary impairment (OTTI) losses were $45 million and $17 million for first quarter 2019 and 2018, respectively. Of total OTTI, losses of $45 million and $10 million were recognized in earnings, and losses of $0 million and $7 million were recognized as non-credit-related OTTI in other comprehensive income for first quarter 2019 and 2018, respectively.
[2]	(2)Includes OTTI losses of $36 million and $20 million for first quarter 2019 and 2018, respectively.

Consolidated Statement of Inc_2

Consolidated Statement of Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Noninterest income
Total OTTI losses recorded on equity securities	$ 36	$ 20
Debt securities [Member]
Noninterest income
Total OTTI losses recorded on debt securities	45	17
Total recorded as part of gross realized losses	45	10
Total losses recognized in OCI as non-credit-related impairment	$ 0	$ 7

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Wells Fargo net income	$ 5,860	$ 5,136
Debt securities:
Net unrealized gains (losses) arising during the period	2,831	(3,443)
Reclassification of net (gains) losses to net income	(81)	68
Derivatives and hedging activities:
Net unrealized losses arising during the period	(35)	(242)
Reclassification of net losses to net income	79	60
Defined benefit plans adjustments:
Net actuarial and prior service gains (losses) arising during the period	(4)	6
Amortization of net actuarial loss, settlements and other to net income	35	32
Foreign currency translation adjustments:
Net unrealized gains (losses) arising during the period	42	(2)
Other comprehensive income (loss), before tax	2,867	(3,521)
Income tax (expense) benefit related to other comprehensive income	(694)	862
Other comprehensive income (loss), net of tax	2,173	(2,659)
Less: Other comprehensive income from noncontrolling interests	0	0
Wells Fargo other comprehensive income (loss), net of tax	2,173	(2,659)
Wells Fargo comprehensive income	8,033	2,477
Comprehensive income from noncontrolling interests	107	191
Total comprehensive income	$ 8,140	$ 2,668

Consolidated Balance Sheet (Una

Consolidated Balance Sheet (Unaudited) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks		$ 20,650	$ 23,551
Interest-earning deposits with banks		128,318	149,736
Total cash, cash equivalents, and restricted cash		148,968	173,287
Federal funds sold and securities purchased under resale agreements		98,621	80,207
Debt securities:
Trading, at fair value		70,378	69,989
Available-for-sale, at fair value		268,099	269,912
Held-to-maturity, at cost (fair value $144,699 and $142,115)		144,990	144,788
Mortgage loans held for sale (includes $11,091 and $11,771 carried at fair value) (1)	[1]	15,016	15,126
Loans held for sale (includes $998 and $1,469 carried at fair value) (1)	[1]	1,018	2,041
Loans (includes $225 and $244 carried at fair value) (1)	[1]	948,249	953,110
Allowance for loan losses		(9,900)	(9,775)
Net loans		938,349	943,335
Mortgage servicing rights:
Measured at fair value		13,336	14,649
Amortized		1,427	1,443
Premises and equipment, net		8,825	8,920
Goodwill		26,420	26,418
Derivative assets		11,238	10,770
Equity securities (includes $32,586 and $29,556 carried at fair value) (1)	[1]	58,440	55,148
Other assets		82,667	79,850
Total assets	[2]	1,887,792	1,895,883
Liabilities
Noninterest-bearing deposits		341,399	349,534
Interest-bearing deposits		922,614	936,636
Total deposits		1,264,013	1,286,170
Short-term borrowings		106,597	105,787
Derivative liabilities		7,393	8,499
Accrued expenses and other liabilities		74,717	69,317
Long-term debt		236,339	229,044
Total liabilities	[3]	1,689,059	1,698,817
Wells Fargo stockholders’ equity:
Preferred stock		23,214	23,214
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		60,409	60,685
Retained earnings		160,776	158,163
Cumulative other comprehensive income (loss)		(3,682)	(6,336)
Treasury stock – 969,863,644 shares and 900,557,866 shares		(50,519)	(47,194)
Unearned ESOP shares		(1,502)	(1,502)
Total Wells Fargo stockholders’ equity		197,832	196,166
Noncontrolling interests		901	900
Total equity		198,733	197,066
Total liabilities and equity		$ 1,887,792	$ 1,895,883
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.
[2]	(2)Our consolidated assets at March 31, 2019, and December 31, 2018, 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, $16 million and $139 million; Interest-earning deposits with banks, $8 million and $8 million; Debt securities, $55 million and $45 million; Net loans, $14.4 billion and $13.6 billion; Equity securities, $112 million and $85 million; Other assets, $252 million and $221 million; and Total assets, $14.8 billion and $14.1 billion, respectively.
[3]	(3)Our consolidated liabilities at March 31, 2019, and December 31, 2018, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Accrued expenses and other liabilities, $205 million and $191 million; Long-term debt, $775 million and $816 million; and Total liabilities, $980 million and $1.0 billion, respectively.

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Assets
Held-to-maturity, at fair value		$ 144,699	$ 142,115
Equity securities, carried at fair value		32,586	29,556
Cash and due from banks		20,650	23,551
Interest-earning deposits with banks		128,318	149,736
Net loans		938,349	943,335
Other assets		82,667	79,850
Equity securities (includes $32,586 and $29,556 carried at fair value) (1)	[1]	58,440	55,148
Assets	[2]	1,887,792	1,895,883
Liabilities
Accrued expenses and other liabilities		74,717	69,317
Long-term debt		236,339	229,044
Liabilities	[3]	$ 1,689,059	$ 1,698,817
Wells Fargo stockholders’ equity:
Common stock, par value		$ 1.666602371	$ 1.666602371
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		969,863,644	900,557,866
VIEs that we consolidate [Member]
Assets
Cash and due from banks		$ 16	$ 139
Interest-earning deposits with banks		8	8
Debt securities		55	45
Net loans		14,400	13,600
Other assets		252	221
Equity securities (includes $32,586 and $29,556 carried at fair value) (1)		112	85
Assets		14,811	14,062
Liabilities
Accrued expenses and other liabilities		205	191
Long-term debt		775	816
Liabilities		980	1,007
Fair value option election [Member]
Assets
Mortgage loans held for sale, carried at fair value		11,091	11,771
Loans held for sale, carried at fair value		998	1,469
Loans, carried at fair value		$ 225	$ 244
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.
[2]	(2)Our consolidated assets at March 31, 2019, and December 31, 2018, 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, $16 million and $139 million; Interest-earning deposits with banks, $8 million and $8 million; Debt securities, $55 million and $45 million; Net loans, $14.4 billion and $13.6 billion; Equity securities, $112 million and $85 million; Other assets, $252 million and $221 million; and Total assets, $14.8 billion and $14.1 billion, respectively.
[3]	(3)Our consolidated liabilities at March 31, 2019, and December 31, 2018, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Accrued expenses and other liabilities, $205 million and $191 million; Long-term debt, $775 million and $816 million; and Total liabilities, $980 million and $1.0 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)
Cumulative effect of new accounting principle | Accounting Standards Update (ASU) 2016-01; ASU 2016-04; ASU 2016-16 and ASU 2014-09 [Member]	$ (24)	$ (24)				$ 94	$ (118)
Beginning balance, adjusted balance	208,055	206,912	$ 25,358	$ 9,136	$ 60,893	145,357	(2,262)	$ (29,892)	$ (1,678)	$ 1,143
Beginning balance, shares at Dec. 31, 2017			11,677,235	4,891,616,628
Balance, beginning of period at Dec. 31, 2017	208,079	206,936	$ 25,358	$ 9,136	60,893	145,263	(2,144)	(29,892)	(1,678)	1,143
Stockholders' Equity Period Increase (Decrease)
Net income	5,136	5,136				5,136
Net income attributable to noncontrolling interests	(191)									191
Net income	5,327
Other comprehensive income (loss) attributable to parent, net of tax	(2,659)	(2,659)					(2,659)
Other comprehensive income (loss) attributable to noncontrolling interest, net of tax	0									0
Other comprehensive income (loss), net of tax	(2,659)						(2,659)
Noncontrolling interests, adjustments to Additional Paid in Capital		7			7
Noncontrolling interests										(376)
Total change in noncontrolling interests	(369)
Common stock issued	1,208	1,208			25	(231)		1,414
Common stock, shares issued				28,425,759
Common stock repurchased	(3,029)	(3,029)			0			(3,029)
Common stock repurchased, shares				(50,567,457)
Preferred stock issued to ESOP	0	0	$ 1,100		43				(1,143)
Preferred stock issued to ESOP, shares			1,100,000
Preferred stock released by ESOP	231	231			(19)				250
Preferred stock converted to common shares	0	0	$ (231)		5			226
Preferred stock converted to common shares, shares			(231,000)	4,407,551
Common stock warrant repurchased/exercised	(157)	(157)			(157)
Preferred stock issued	0	0	$ 0		0
Preferred stock, shares issued			0
Common stock dividends	(1,911)	(1,911)			13	(1,924)
Preferred stock dividends	(410)	(410)				(410)
Stock incentive compensation expense	437	437			437
Net change in deferred compensation and related plans	(813)	(813)			(848)			35
Net change	(2,145)	(1,960)	$ 869	$ 0	(494)	2,571	(2,659)	(1,354)	(893)	(185)
Net change, shares			869,000	(17,734,147)
Balance, end of period at Mar. 31, 2018	205,910	204,952	$ 26,227	$ 9,136	60,399	147,928	(4,921)	(31,246)	(2,571)	958
Ending balance, shares at Mar. 31, 2018			12,546,235	4,873,882,481
Stockholders' Equity Period Increase (Decrease)
Cumulative effect of new accounting principle | Accounting Standards Update 2016-02 and Accounting Standards Update 2017-08 [Member]	(11)	(11)				(492)	481
Beginning balance, adjusted balance	197,055	196,155	$ 23,214	$ 9,136	60,685	157,671	(5,855)	(47,194)	(1,502)	900
Beginning balance, shares at Dec. 31, 2018			9,377,216	4,581,253,608
Balance, beginning of period at Dec. 31, 2018	197,066	196,166	$ 23,214	$ 9,136	60,685	158,163	(6,336)	(47,194)	(1,502)	900
Stockholders' Equity Period Increase (Decrease)
Net income	5,860	5,860				5,860
Net income attributable to noncontrolling interests	(107)									107
Net income	5,967
Other comprehensive income (loss) attributable to parent, net of tax	2,173	2,173					2,173
Other comprehensive income (loss) attributable to noncontrolling interest, net of tax	0									0
Other comprehensive income (loss), net of tax	2,173						2,173
Noncontrolling interests, adjustments to Additional Paid in Capital		0			0
Noncontrolling interests										(106)
Total change in noncontrolling interests	(106)
Common stock issued	1,139	1,139			0	(329)		1,468
Common stock, shares issued				28,057,901
Common stock repurchased	(4,820)	(4,820)			0			(4,820)
Common stock repurchased, shares				(97,363,710)
Preferred stock issued to ESOP	0	0	$ 0		0				0
Preferred stock issued to ESOP, shares			0
Preferred stock released by ESOP	0	0			0				0
Preferred stock converted to common shares	0	0	$ 0		0			0
Preferred stock converted to common shares, shares			(5)	31
Common stock warrant repurchased/exercised	0	0			0
Preferred stock issued	0	0	$ 0		0
Preferred stock, shares issued			0
Common stock dividends	(2,054)	(2,054)			19	(2,073)
Preferred stock dividends	(353)	(353)				(353)
Stock incentive compensation expense	544	544			544
Net change in deferred compensation and related plans	(812)	(812)			(839)			27
Net change	1,678	1,677	$ 0	$ 0	(276)	3,105	2,173	(3,325)	0	1
Net change, shares			(5)	(69,305,778)
Balance, end of period at Mar. 31, 2019	$ 198,733	$ 197,832	$ 23,214	$ 9,136	$ 60,409	$ 160,776	$ (3,682)	$ (50,519)	$ (1,502)	$ 901
Ending balance, shares at Mar. 31, 2019			9,377,211	4,511,947,830

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (Unaudited) (Parenthetical) $ in Millions	Mar. 31, 2019USD ($)
Private Forward Repurchase Transaction [Member]
Consolidated Statement of Changes in Equity (Textuals) [Abstract]
Private forward repurchase contract	$ 0

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income before noncontrolling interests	$ 5,967	$ 5,327
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	845	191
Changes in fair value of MSRs, MLHFS and LHFS carried at fair value	1,144	(788)
Depreciation, amortization and accretion	1,449	1,431
Other net (gains)	(1,418)	(2,309)
Stock-based compensation	902	792
Originations and purchases of mortgage loans held for sale	(25,098)	(38,460)
Proceeds from sales of and paydowns on mortgage loans held for sale	17,148	31,236
Net change in:
Debt and equity securities, held for trading	6,969	10,861
Loans held for sale	728	(602)
Deferred income taxes	312	484
Derivative assets and liabilities	(1,586)	(20)
Other assets	1,130	3,331
Other accrued expenses and liabilities	(541)	3,756
Net cash provided by operating activities	7,951	15,230
Net change in:
Federal funds sold and securities purchased under resale agreements	(18,414)	4,566
Available-for-sale debt securities:
Proceeds from sales	1,680	3,458
Prepayments and maturities	6,001	6,909
Purchases	(4,937)	(14,179)
Held-to-maturity debt securities:
Paydowns and maturities	2,123	2,304
Equity securities, not held for trading:
Proceeds from sales and capital returns	1,180	1,920
Purchases	(1,352)	(1,234)
Loans:
Loans originated by banking subsidiaries, net of principal collected	669	1,238
Proceeds from sales (including participations) of loans held for investment	3,410	3,803
Purchases (including participations) of loans	(331)	(268)
Principal collected on nonbank entities’ loans	899	2,210
Loans originated by nonbank entities	(1,318)	(1,655)
Proceeds from sales of foreclosed assets and short sales	707	935
Other, net	657	154
Net cash provided (used) by investing activities	(9,026)	10,161
Net change in:
Deposits	(22,161)	(32,276)
Short-term borrowings	810	(5,165)
Long-term debt:
Proceeds from issuance	17,338	15,517
Repayment	(11,898)	(11,625)
Preferred stock:
Cash dividends paid	(294)	(418)
Common stock:
Proceeds from issuance	181	382
Stock tendered for payment of withholding taxes	(264)	(307)
Repurchased	(4,820)	(3,029)
Cash dividends paid	(1,997)	(1,867)
Net change in noncontrolling interests	(83)	(113)
Other, net	(56)	(42)
Net cash used by financing activities	(23,244)	(38,943)
Net change in cash, cash equivalents, and restricted cash	(24,319)	(13,552)
Cash, cash equivalents, and restricted cash at beginning of period	173,287	215,947
Cash, cash equivalents, and restricted cash at end of period	148,968	202,395
Supplemental cash flow disclosures:
Cash paid for interest	4,401	3,002
Cash paid for income taxes	$ 126	$ 158

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
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, trust and investments, mortgage banking, investment banking, retail banking, brokerage, and consumer and commercial finance through banking locations, 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, 2018 ( 2018 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 worse than anticipated in those estimates, which could materially affect our results of operations and financial condition. Management has made significant estimates in several areas, including: • allowance for credit losses (Note 6 (Loans and Allowance for Credit Losses)); • valuations of residential mortgage servicing rights (MSRs) (Note 10 (Securitizations and Variable Interest Entities) and Note 11 (Mortgage Banking Activities)); • valuations of financial instruments (Note 15 (Derivatives) and Note 16 (Fair Values of Assets and Liabilities)); • liabilities for contingent litigation losses (Note 14 (Legal Actions)); and • income taxes. Actual results could differ from those estimates. These unaudited interim financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. The interim financial information should be read in conjunction with our 2018 Form 10-K. Accounting Standards Adopted in 2019 In first quarter 2019 , we adopted the following new accounting guidance: • Accounting Standards Update (ASU or Update) 2018-16 – Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes • ASU 2017-08 – Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities • ASU 2016-02 – Leases (Topic 842) and subsequent related Updates, including early adoption of ASU 2019-01 – Leases (Topic 842): Codification Improvements ASU 2018-16 expands the list of U.S. benchmark interest rates permitted in the application of hedge accounting. The Update adds the OIS rate based on SOFR as a U.S. benchmark interest rate to facilitate the LIBOR to SOFR transition and provide sufficient lead time for entities to prepare for changes to interest rate risk hedging strategies for both risk management and hedge accounting purposes. The Update is applied prospectively for qualifying new or re-designated hedging relationships entered into on or after adoption date. We adopted the guidance in first quarter 2019. The adoption did not have an impact as we did not designate SOFR OIS as a benchmark interest rate in any hedging relationships. ASU 2017-08 changes the interest income recognition model for purchased callable debt securities carried at a premium, as the premium will be amortized to the earliest call date rather than to the contractual maturity date. Accounting for purchased callable debt securities held at a discount does not change, as the discount will continue to accrete to the contractual maturity date. The Update impacted our investments in purchased callable debt securities classified as available-for-sale (AFS) and held-to-maturity (HTM), which primarily consist of debt securities of U.S. states and political subdivisions. We adopted the Update in first quarter 2019 and recorded a cumulative-effect adjustment as of January 1, 2019, that decreased total stockholders’ equity by $111 million . Retained earnings was reduced by $592 million which reflects both the incremental premium amortization under the new guidance from the acquisition date of our impacted AFS and HTM debt securities through the date of adoption and the fact that the incremental premium amortization is not deductible for federal income tax purposes. Other comprehensive income (OCI) was increased by $481 million which reflects the corresponding adjustment to the adoption date unrealized gain or loss of impacted AFS debt securities. Going forward, interest income recognized prior to the call date will be reduced because the premium will be amortized over a shorter period. ASU 2016-02 modifies the guidance used by lessors and lessees to account for leasing transactions. For our transition to the new guidance, we elected several available practical expedients, including to not reassess the classification of our existing leases, any initial direct costs associated with our leases, or whether any existing contracts are or contain leases. In addition, we elected not to provide a comparative presentation for 2018 and 2017 financial statements. We adopted the Update in first quarter 2019 and recorded a cumulative-effect adjustment that increased retained earnings by $100 million related to deferred gains on our prior sale-leaseback transactions. We also recognized operating lease right-of-use (ROU) assets and liabilities, substantially all of which relate to our leasing of real estate as a lessee, of $4.9 billion and $5.6 billion , respectively. Leasing Activity AS LESSOR We lease equipment to our customers under financing or operating leases. Financing leases are presented in loans and are recorded at the discounted amounts of lease payments receivable plus the estimated residual value of the leased asset. Leveraged leases, which are a form of financing leases, are reduced by related non-recourse debt from third-party investors. Lease payments receivable reflect contractual lease payments adjusted for renewal or termination options that we believe the customer is reasonably certain to exercise. The residual value reflects our best estimate of the expected sales price for the equipment at lease termination based on sales history adjusted for recent trends in the expected exit markets. Many of our leases allow the customer to extend the lease at prevailing market terms or purchase the asset for fair value at lease termination. Our allowance for loan losses for financing leases considers both the collectability of the lease payments receivable as well as the estimated residual value of the leased asset. We typically purchase residual value insurance on our financing leases so that our risk of loss at lease termination will be less than 10% of the initial value of the lease. Our risk to declines in residual values is further mitigated by the diversity of leased assets in our lease portfolio. In addition, we have several channels for re-leasing or marketing those assets. In connection with a lease, we may finance the customer’s purchase of other products or services from the equipment vendor and allocate the contract consideration between the use of the asset and the purchase of those products or services based on information obtained from the vendor. Amounts allocated to financing of vendor products or services are reported in loans as commercial and industrial loans, rather than as lease financing. Our primary income from financing leases is interest income recognized using the effective interest method. Variable lease revenues, such as reimbursement for property taxes associated with the leased asset, are included in lease income within noninterest income. Operating lease assets are presented in other assets, net of accumulated depreciation. Periodic depreciation expense is recorded on a straight-line basis to the estimated residual value over the estimated useful life of the leased asset. On a periodic basis, operating lease assets are reviewed for impairment and impairment loss is recognized if the carrying amount of operating lease assets exceeds fair value and is not recoverable. The carrying amount of leased assets is deemed not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the lease payments and the estimated residual value upon the eventual disposition of the equipment. Depreciation of leased assets and impairment loss are presented in operating leases expense within other noninterest expense. Operating lease rental income for leased assets is recognized in lease income within noninterest income on a straight-line basis over the lease term. For leases of railcars, revenue for maintenance services provided under the lease is recognized in lease income. We elected to exclude from revenues and expenses any sales tax incurred on lease payments which are reimbursed by the lessee. Substantially all of our leased assets are protected against casualty loss through third party insurance. AS LESSEE We enter into lease agreements to obtain the right to use assets for our business operations, substantially all of which are real estate. Lease liabilities and ROU assets are recognized when we enter into operating or financing leases and represent our obligations and rights to use these assets over the period of the leases and may be re-measured for certain modifications, resolution of certain contingencies involving variable consideration, or our exercise of options (renewal, extension, or termination) under the lease. Operating lease liabilities include fixed and in-substance fixed payments for the contractual duration of the lease, adjusted for renewals or terminations which were deemed probable of exercise when measured. The lease payments are discounted using a rate determined when the lease is recognized. As we typically do not know the discount rate implicit in the lease, we estimate a discount rate that we believe approximates a collateralized borrowing rate for the estimated duration of the lease. The discount rate is updated when re-measurement events occur. The related operating lease ROU assets may differ from operating lease liabilities due to initial direct costs, deferred or prepaid lease payments and lease incentives. We present operating lease liabilities in accrued expenses and other liabilities and the related operating lease ROU assets in other assets. The amortization of operating lease ROU assets and the accretion of operating lease liabilities are reported together as fixed lease expense and are included in net occupancy expense within noninterest expense. The fixed lease expense is recognized on a straight-line basis over the life of the lease. Some of our operating leases include variable lease payments which are periodic adjustments of our payments for the use of the asset based on changes in factors such as consumer price indices, fair market value, tax rates imposed by taxing authorities, or lessor cost of insurance. To the extent not included in operating lease liabilities and operating lease ROU assets, these variable lease payments are recognized as incurred in net occupancy expense within noninterest expense. We account for amounts paid for maintenance or other services as lease payments. In addition, for certain asset classes, we have elected to exclude leases with original terms of less than one year from the operating lease ROU assets and lease liabilities. The related short-term lease expense is included in net occupancy expense. Finance lease (formerly capital lease) liabilities are presented in long-term debt and the associated finance ROU assets are presented in premises and equipment. Share Repurchases From time to time we may enter into private forward repurchase contracts, written repurchase plans pursuant to Rule 10b5-1 of the Securities Exchange Act of 1934, or a combination of the two to complement our open-market common stock repurchase strategies. The stock repurchase transactions 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 the private forward repurchase 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 the Board of Governors of the Federal Reserve System (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 did not enter into any private forward repurchase contracts in first quarter 2019 and we had no unsettled private share repurchase contracts at March 31, 2019 . Under a Rule 10b5-1 repurchase plan, payments and receipt of repurchased shares settle on the same day and the shares repurchased reduce the total number of outstanding shares of common stock upon the settlement of each trade under the plan. Supplemental Cash Flow Information Significant noncash activities are presented in Table 1.1 . Table 1.1: Supplemental Cash Flow Information Quarter ended March 31, (in millions) 2019 2018 Trading debt securities retained from securitization of MLHFS $ 8,875 8,776 Transfers from loans to MLHFS 1,292 1,297 Transfers from loans to LHFS 3 1,973 Transfers from available-for-sale debt securities to held-to-maturity debt securities 2,407 4,451 Operating lease ROU assets acquired with operating lease liabilities (1) 5,127 — (1) First quarter 2019 includes $4.9 billion from adoption of ASU 2016-02 – Leases (Topic 842) and $227 million attributable to new leases and changes from modified leases. Subsequent Events We have evaluated the effects of events that have occurred subsequent to March 31, 2019 , and, except as disclosed elsewhere in the footnotes, there have been no material events that would require recognition in our first quarter 2019 consolidated financial statements or disclosure in the Notes to the consolidated financial statements.

Business Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2019
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. We completed no acquisitions during first quarter 2019 and had no business combinations pending as of March 31, 2019.

Cash, Loan and Dividend Restric

Cash, Loan and Dividend Restrictions	3 Months Ended
	Mar. 31, 2019
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Cash, Loan and Dividend Restrictions	Note 3: Cash, Loan and Dividend Restrictions Cash and cash equivalents may be restricted as to usage or withdrawal. FRB regulations require that each of our subsidiary banks maintain reserve balances on deposit with the Federal Reserve Banks. Table 3.1 provides a summary of restrictions on cash equivalents in addition to the FRB reserve cash balance requirements . Table 3.1: Nature of Restrictions on Cash Equivalents (in millions) Mar 31, Dec 31, Average required reserve balance for FRB (1) $ 11,164 12,428 Reserve balance for non-U.S. central banks 746 517 Segregated for benefit of brokerage customers under federal and other brokerage regulations 913 1,135 Related to consolidated variable interest entities (VIEs) that can only be used to settle liabilities of VIEs 24 147 (1) FRB required reserve balance represents average for first quarter 2019 and for the year ended December 31, 2018 . We have a state-chartered subsidiary bank that is subject to state regulations that limit dividends. Under these provisions and regulatory limitations, our national and state-chartered subsidiary banks could have declared additional dividends of $7.3 billion at March 31, 2019 , without obtaining prior regulatory approval. Our nonbank subsidiaries are also limited by certain federal and state statutory provisions and regulations covering the amount of dividends that may be paid in any given year. I n addition, under a Support Agreement dated June 28, 2017, among Wells Fargo & Company, the parent holding company (the “Parent”), WFC Holdings, LLC, an intermediate holding company and subsidiary of the Parent (the “IHC”), and Wells Fargo Bank, N.A., Wells Fargo Securities, LLC, and Wells Fargo Clearing Services, LLC, each an indirect subsidiary of the Parent, the IHC may be restricted from making dividend payments to the Parent if certain liquidity and/or capital metrics fall below defined triggers. Based on retained earnings at March 31, 2019 , our nonbank subsidiaries could have declared additional dividends of $24.9 billion at March 31, 2019 , without obtaining prior regulatory approval. For additional information see Note 3 ( Cash, Loan and Dividend Restrictions) in our 2018 Form 10-K. The FRB’s Capital Plan Rule (codified at 12 CFR 225.8 of Regulation Y) establishes capital planning and prior notice and approval requirements for capital distributions including dividends by certain large bank holding companies. The FRB has also published guidance regarding its supervisory expectations for capital planning, including capital policies regarding the process relating to common stock dividend and repurchase decisions in the FRB’s SR Letter 15-18. The effect of this guidance is to require the approval of the FRB (or specifically under the Capital Plan Rule, a notice of non-objection) for the Company to repurchase or redeem common or perpetual preferred stock as well as to raise the per share quarterly dividend from its current level of $0.45 per share as declared by the Company’s Board of Directors on April 23, 2019 , payable on June 1, 2019 .

Trading Activities

Trading Activities	3 Months Ended
	Mar. 31, 2019
Trading Activities [Abstract]
Trading Activities	Note 4: Trading Activities Table 4.1 presents a summary of our trading assets and liabilities measured at fair value through earnings . Table 4.1: Trading Assets and Liabilities Mar 31, Dec 31, (in millions) 2019 2018 Trading assets: Debt securities $ 70,378 69,989 Equity securities 20,933 19,449 Loans held for sale 998 1,469 Gross trading derivative assets 30,002 29,216 Netting (1) (20,809 ) (19,807 ) Total trading derivative assets 9,193 9,409 Total trading assets 101,502 100,316 Trading liabilities: Short sale 21,586 19,720 Gross trading derivative liabilities 28,994 28,717 Netting (1) (22,810 ) (21,178 ) Total trading derivative liabilities 6,184 7,539 Total trading liabilities $ 27,770 27,259 (1) Represents balance sheet netting for trading derivative asset and liability balances, and trading portfolio level counterparty valuation adjustments. Table 4.2 provides a summary of the net interest income earned from trading securities, and net gains and losses due to the realized and unrealized gains and losses from trading activities. Table 4.2: Net Interest Income and Net Gains (Losses) on Trading Activities Quarter ended March 31, (in millions) 2019 2018 Interest income (1): Debt securities $ 793 631 Equity securities 115 141 Loans held for sale 23 8 Total interest income 931 780 Less: Interest expense (2) 136 128 Net interest income 795 652 Net gains (losses) from trading activities: Debt securities 688 (499 ) Equity securities 2,067 (469 ) Loans held for sale 14 8 Derivatives (3) (2,412 ) 1,203 Total net gains from trading activities (4) 357 243 Total trading-related net interest and noninterest income $ 1,152 895 (1) Represents interest and dividend income earned on trading securities. (2) Represents interest and dividend expense incurred on trading securities we have sold but have not yet purchased. (3) Excludes economic hedging of mortgage banking and asset/liability management activities, for which hedge results (realized and unrealized) are reported with the respective hedged activities. (4) Represents realized gains (losses) from our trading activities and unrealized gains (losses) due to changes in fair value of our trading positions, attributable to the type of asset or liability.

AFS and HTM Debt Securities

AFS and HTM Debt Securities	3 Months Ended
	Mar. 31, 2019
AFS and HTM Debt Securities [Abstract]
AFS and HTM Debt Securities	Note 5: Available-for-Sale and Held-to-Maturity Debt Securities Table 5.1 provides the amortized cost and fair value by major categories of available-for-sale debt 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 debt securities are reported on an after-tax basis as a component of cumulative OCI. Information on debt securities held for trading is included in Note 4 (Trading Activities) to Financial Statements in this Report. Table 5.1: Amortized Cost and Fair Value (in millions) Amortized Cost Gross unrealized gains Gross unrealized losses Fair value March 31, 2019 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ 15,168 4 (66 ) 15,106 Securities of U.S. states and political subdivisions (1) 48,566 1,194 (60 ) 49,700 Mortgage-backed securities: Federal agencies 151,182 749 (1,268 ) 150,663 Residential 1,432 24 — 1,456 Commercial 4,332 50 (10 ) 4,372 Total mortgage-backed securities 156,946 823 (1,278 ) 156,491 Corporate debt securities 6,188 204 (38 ) 6,354 Collateralized loan and other debt obligations (2) 35,304 169 (158 ) 35,315 Other (3) 5,074 73 (14 ) 5,133 Total available-for-sale debt securities 267,246 2,467 (1,614 ) 268,099 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies 44,758 85 (150 ) 44,693 Securities of U.S. states and political subdivisions 6,163 102 (15 ) 6,250 Federal agency and other mortgage-backed securities (4) 94,009 419 (732 ) 93,696 Collateralized loan obligations 60 — — 60 Total held-to-maturity debt securities 144,990 606 (897 ) 144,699 Total $ 412,236 3,073 (2,511 ) 412,798 December 31, 2018 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ 13,451 3 (106 ) 13,348 Securities of U.S. states and political subdivisions (1) 48,994 716 (446 ) 49,264 Mortgage-backed securities: Federal agencies 155,974 369 (3,140 ) 153,203 Residential 2,638 142 (5 ) 2,775 Commercial 4,207 40 (22 ) 4,225 Total mortgage-backed securities 162,819 551 (3,167 ) 160,203 Corporate debt securities 6,230 131 (90 ) 6,271 Collateralized loan and other debt obligations (2) 35,581 158 (396 ) 35,343 Other (3) 5,396 100 (13 ) 5,483 Total available-for-sale debt securities 272,471 1,659 (4,218 ) 269,912 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies 44,751 4 (415 ) 44,340 Securities of U.S. states and political subdivisions 6,286 30 (116 ) 6,200 Federal agency and other mortgage-backed securities (4) 93,685 112 (2,288 ) 91,509 Collateralized loan obligations 66 — — 66 Total held-to-maturity debt securities 144,788 146 (2,819 ) 142,115 Total $ 417,259 1,805 (7,037 ) 412,027 (1) Includes investments in tax-exempt preferred debt securities issued by investment funds or trusts that predominantly invest in tax-exempt municipal securities. The cost basis and fair value of these types of securities was $5.6 billion each at March 31, 2019 , and $6.3 billion each at December 31, 2018 . (2) Includes collateralized debt obligations (CDOs) with a cost basis and fair value of $621 million and $755 million , respectively, at March 31, 2019 , and $662 million and $800 million , respectively, at December 31, 2018 . (3) Primarily includes asset-backed securities collateralized by student loans. (4) Predominantly consists of federal agency mortgage-backed securities at both March 31, 2019 and December 31, 2018 . Gross Unrealized Losses and Fair Value Table 5.2 shows the gross unrealized losses and fair value of available-for-sale and held-to-maturity debt securities by length of time those individual securities in each category have been in a continuous loss position. Debt securities on which we have taken credit-related other-than-temporary impairment (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 5.2: Gross Unrealized Losses and Fair Value Less than 12 months 12 months or more Total (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2019 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ — — (66 ) 6,220 (66 ) 6,220 Securities of U.S. states and political subdivisions (13 ) 4,027 (47 ) 3,612 (60 ) 7,639 Mortgage-backed securities: Federal agencies (5 ) 1,392 (1,263 ) 95,706 (1,268 ) 97,098 Residential — — — — — — Commercial (7 ) 1,542 (3 ) 105 (10 ) 1,647 Total mortgage-backed securities (12 ) 2,934 (1,266 ) 95,811 (1,278 ) 98,745 Corporate debt securities (17 ) 736 (21 ) 373 (38 ) 1,109 Collateralized loan and other debt obligations (131 ) 19,572 (27 ) 2,513 (158 ) 22,085 Other (7 ) 1,034 (7 ) 278 (14 ) 1,312 Total available-for-sale debt securities (180 ) 28,303 (1,434 ) 108,807 (1,614 ) 137,110 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies — — (150 ) 30,379 (150 ) 30,379 Securities of U.S. states and political subdivisions — — (15 ) 1,663 (15 ) 1,663 Federal agency and other mortgage-backed securities — — (732 ) 64,315 (732 ) 64,315 Collateralized loan obligations — — — — — — Total held-to-maturity debt securities — — (897 ) 96,357 (897 ) 96,357 Total $ (180 ) 28,303 (2,331 ) 205,164 (2,511 ) 233,467 December 31, 2018 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ (1 ) 498 (105 ) 6,204 (106 ) 6,702 Securities of U.S. states and political subdivisions (73 ) 9,746 (373 ) 9,017 (446 ) 18,763 Mortgage-backed securities: Federal agencies (42 ) 10,979 (3,098 ) 112,252 (3,140 ) 123,231 Residential (3 ) 398 (2 ) 69 (5 ) 467 Commercial (20 ) 1,972 (2 ) 79 (22 ) 2,051 Total mortgage-backed securities (65 ) 13,349 (3,102 ) 112,400 (3,167 ) 125,749 Corporate debt securities (64 ) 1,965 (26 ) 298 (90 ) 2,263 Collateralized loan and other debt obligations (388 ) 28,306 (8 ) 553 (396 ) 28,859 Other (7 ) 819 (6 ) 159 (13 ) 978 Total available-for-sale debt securities (598 ) 54,683 (3,620 ) 128,631 (4,218 ) 183,314 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies (3 ) 895 (412 ) 41,083 (415 ) 41,978 Securities of U.S. states and political subdivisions (4 ) 598 (112 ) 3,992 (116 ) 4,590 Federal agency and other mortgage-backed securities (5 ) 4,635 (2,283 ) 77,741 (2,288 ) 82,376 Collateralized loan obligations — — — — — — Total held-to-maturity debt securities (12 ) 6,128 (2,807 ) 122,816 (2,819 ) 128,944 Total $ (610 ) 60,811 (6,427 ) 251,447 (7,037 ) 312,258 We have assessed each debt 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 debt 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. We evaluate, where necessary, whether credit impairment exists by comparing the present value of the expected cash flows to the debt securities’ amortized cost basis. For descriptions of the factors we consider when analyzing debt securities for impairment, see Note 1 (Summary of Significant Accounting Policies) and Note 5 (Available-for-Sale and Held-to-Maturity Debt Securities) to Financial Statements in our 2018 Form 10-K. There were no material changes to our methodologies for assessing impairment in first quarter 2019 . Table 5.3 shows the gross unrealized losses and fair value of the available-for-sale and held-to-maturity debt 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 debt security. Debt 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, debt securities rated below investment grade, labeled as “speculative grade” by the rating agencies, are considered to be distinctively higher credit risk than investment grade debt securities. We have also included debt securities not rated by S&P or Moody’s in the table below based on our internal credit grade of the debt 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 debt securities categorized as investment grade based on internal credit grades were $11 million and $4.0 billion , respectively, at March 31, 2019 , and $20 million and $5.2 billion , respectively, at December 31, 2018 . If an internal credit grade was not assigned, we categorized the debt security as non-investment grade. Table 5.3: Gross Unrealized Losses and Fair Value by Investment Grade Investment grade Non-investment grade (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2019 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ (66 ) 6,220 — — Securities of U.S. states and political subdivisions (48 ) 7,412 (12 ) 227 Mortgage-backed securities: Federal agencies (1,268 ) 97,098 — — Residential — — — — Commercial (8 ) 1,636 (2 ) 11 Total mortgage-backed securities (1,276 ) 98,734 (2 ) 11 Corporate debt securities (8 ) 455 (30 ) 654 Collateralized loan and other debt obligations (158 ) 22,085 — — Other (8 ) 1,039 (6 ) 273 Total available-for-sale debt securities (1,564 ) 135,945 (50 ) 1,165 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies (150 ) 30,379 — — Securities of U.S. states and political subdivisions (15 ) 1,663 — — Federal agency and other mortgage-backed securities (731 ) 64,185 (1 ) 130 Collateralized loan obligations — — — — Total held-to-maturity debt securities (896 ) 96,227 (1 ) 130 Total $ (2,460 ) 232,172 (51 ) 1,295 December 31, 2018 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ (106 ) 6,702 — — Securities of U.S. states and political subdivisions (425 ) 18,447 (21 ) 316 Mortgage-backed securities: Federal agencies (3,140 ) 123,231 — — Residential (2 ) 295 (3 ) 172 Commercial (20 ) 1,999 (2 ) 52 Total mortgage-backed securities (3,162 ) 125,525 (5 ) 224 Corporate debt securities (17 ) 791 (73 ) 1,472 Collateralized loan and other debt obligations (396 ) 28,859 — — Other (7 ) 726 (6 ) 252 Total available-for-sale debt securities (4,113 ) 181,050 (105 ) 2,264 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies (415 ) 41,978 — — Securities of U.S. states and political subdivisions (116 ) 4,590 — — Federal agency and other mortgage-backed securities (2,278 ) 81,977 (10 ) 399 Collateralized loan obligations — — — — Total held-to-maturity debt securities (2,809 ) 128,545 (10 ) 399 Total $ (6,922 ) 309,595 (115 ) 2,663 Contractual Maturities Table 5.4 shows the fair value and contractual weighted-average yields (taxable-equivalent basis) of available-for-sale debt securities by contractual maturity. The remaining contractual principal maturities for mortgage-backed securities (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 5.4: Available-for Sale Debt Securities - 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 Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2019 Available-for-sale debt securities (1): Fair value: Securities of U.S. Treasury and federal agencies $ 15,106 1.93 % $ 2,154 1.63 % $ 12,903 1.98 % $ 49 1.89 % $ — — % Securities of U.S. states and political subdivisions 49,700 4.81 3,665 2.81 5,986 3.39 4,274 3.47 35,775 5.41 Mortgage-backed securities: Federal agencies 150,663 3.43 — — 152 3.50 1,819 2.57 148,692 3.44 Residential 1,456 2.97 — — 1 5.17 — — 1,455 2.96 Commercial 4,372 3.72 — — — — 341 3.60 4,031 3.73 Total mortgage-backed securities 156,491 3.44 — — 153 3.51 2,160 2.73 154,178 3.45 Corporate debt securities 6,354 5.09 430 5.78 2,509 5.25 2,795 4.70 620 5.67 Collateralized loan and other debt obligations 35,315 4.15 — — 18 4.80 10,889 4.24 24,408 4.11 Other 5,133 3.17 8 5.82 751 4.04 1,482 2.08 2,892 3.50 Total available-for-sale debt securities at fair value $ 268,099 3.73 % $ 6,257 2.61 % $ 22,320 2.81 % $ 21,649 3.85 % $ 217,873 3.85 % (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 5.5 shows the amortized cost and weighted-average yields of held-to-maturity debt securities by contractual maturity. Table 5.5: Held-to-Maturity Debt Securities - Amortized Cost by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2019 Held-to-maturity debt securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,758 2.12 % $ — — % $ 32,362 2.04 % $ 12,396 2.32 % $ — — % Securities of U.S. states and political subdivisions 6,163 4.92 — — 70 6.03 1,366 4.92 4,727 4.90 Federal agency and other mortgage-backed securities 94,009 3.11 — — 15 3.82 — — 93,994 3.11 Collateralized loan obligations 60 3.97 — — — — 60 3.97 — — Total held-to-maturity debt securities at amortized cost $ 144,990 2.88 % $ — — % $ 32,447 2.05 % $ 13,822 2.58 % $ 98,721 3.19 % (1) Weighted-average yields displayed by maturity bucket are weighted based on amortized cost and predominantly represent contractual coupon rates. Table 5.6 shows the fair value of held-to-maturity debt securities by contractual maturity. Table 5.6: Held-to-Maturity Debt Securities - Fair Value by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Amount Amount Amount Amount March 31, 2019 Held-to-maturity debt securities: Fair value: Securities of U.S. Treasury and federal agencies $ 44,693 — 32,245 12,448 — Securities of U.S. states and political subdivisions 6,250 — 70 1,403 4,777 Federal agency and other mortgage-backed securities 93,696 — 15 — 93,681 Collateralized loan obligations 60 — — 60 — Total held-to-maturity debt securities at fair value $ 144,699 — 32,330 13,911 98,458 Realized Gains and Losses Table 5.7 shows the gross realized gains and losses on sales and OTTI write-downs related to available-for-sale debt securities. Table 5.7: Realized Gains and Losses Quarter ended March 31, (in millions) 2019 2018 Gross realized gains $ 173 21 Gross realized losses (3 ) (10 ) OTTI write-downs (45 ) (10 ) Net realized gains from available-for-sale debt securities $ 125 1 Other-Than-Temporarily Impaired Debt Securities Table 5.8 shows the detail of total OTTI write-downs included in earnings for available-for-sale debt securities. There were no OTTI write-downs on held-to-maturity debt securities during first quarter 2019 and 2018 . Table 5.8: Detail of OTTI Write-downs Quarter ended March 31, (in millions) 2019 2018 Debt securities OTTI write-downs included in earnings: Securities of U.S. states and political subdivisions $ 29 2 Mortgage-backed securities: Residential — 1 Commercial 14 7 Corporate debt securities 2 — Total debt securities OTTI write-downs included in earnings $ 45 10 Table 5.9 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 5.9: OTTI Write-downs Included in Earnings and the Related Changes in OCI Quarter ended March 31, (in millions) 2019 2018 OTTI on debt securities Recorded as part of gross realized losses: Credit-related OTTI $ 16 9 Intent-to-sell OTTI 29 1 Total recorded as part of gross realized losses 45 10 Changes to OCI for losses (reversal of losses) in non-credit-related OTTI (1): Securities of U.S. states and political subdivisions — (2 ) Residential mortgage-backed securities (1 ) (1 ) Commercial mortgage-backed securities 1 10 Total changes to OCI for non-credit-related OTTI — 7 Total OTTI losses recorded on debt securities $ 45 17 (1) Represents amounts recorded to OCI for impairment of debt securities, due to factors other than credit, 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 debt securities due to non-credit factors. Table 5.10 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 5.10: Rollforward of OTTI Credit Loss Quarter ended March 31, (in millions) 2019 2018 Credit loss recognized, beginning of period $ 562 742 Additions: For securities with initial credit impairments 2 — For securities with previous credit impairments 14 9 Total additions 16 9 Reductions: For securities sold, matured, or intended/required to be sold (346 ) (101 ) For recoveries of previous credit impairments (1) — (1 ) Total reductions (346 ) (102 ) Credit loss recognized, end of period $ 232 649 (1) Recoveries of previous credit impairments result from increases in expected cash flows subsequent to credit loss recognition. Such recoveries are reflected prospectively as interest yield adjustments using the effective interest method.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans and Allowance for Credit Losses	Note 6: Loans and Allowance for Credit Losses Table 6.1 presents total loans outstanding by portfolio segment and class of financing receivable. Outstanding balances include a total net reduction of $466 million and $1.3 billion at March 31, 2019 , and December 31, 2018 , respectively, for unearned income, net deferred loan fees, and unamortized discounts and premiums. Table 6.1: Loans Outstanding (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 349,134 350,199 Real estate mortgage 122,113 121,014 Real estate construction 21,857 22,496 Lease financing 19,122 19,696 Total commercial 512,226 513,405 Consumer: Real estate 1-4 family first mortgage 284,545 285,065 Real estate 1-4 family junior lien mortgage 33,099 34,398 Credit card 38,279 39,025 Automobile 44,913 45,069 Other revolving credit and installment 35,187 36,148 Total consumer 436,023 439,705 Total loans $ 948,249 953,110 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 6.2 presents total commercial foreign loans outstanding by class of financing receivable. Table 6.2: Commercial Foreign Loans Outstanding (in millions) Mar 31, Dec 31, Commercial foreign loans: Commercial and industrial $ 63,158 62,564 Real estate mortgage 7,049 6,731 Real estate construction 1,138 1,011 Lease financing 1,167 1,159 Total commercial foreign loans $ 72,512 71,465 Loan Purchases, Sales, and Transfers Table 6.3 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 6.3: Loan Purchases, Sales, and Transfers 2019 2018 (in millions) Commercial Consumer (1) Total Commercial Consumer (1) Total Quarter ended March 31, Purchases $ 329 3 332 256 — 256 Sales (421 ) (179 ) (600 ) (460 ) — (460 ) Transfers (to) from MLHFS/LHFS (3 ) — (3 ) (420 ) (1,553 ) (1,973 ) (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. 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. The unfunded amount of these temporary advance arrangements totaled approximately $91.0 billion at both March 31, 2019 and December 31, 2018 . We issue commercial letters of credit to assist customers in purchasing goods or services, typically for international trade. At March 31, 2019 , and December 31, 2018 , we had $1.2 billion and $919 million , 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 13 (Guarantees, Pledged Assets and Collateral, and Other Commitments) 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 6.4 . The table excludes the issued standby and commercial letters of credit and temporary advance arrangements described above. Table 6.4: Unfunded Credit Commitments (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 328,156 330,492 Real estate mortgage 7,453 6,984 Real estate construction 15,748 16,400 Total commercial 351,357 353,876 Consumer: Real estate 1-4 family first mortgage 39,915 29,736 Real estate 1-4 family junior lien mortgage 37,854 37,719 Credit card 112,238 109,840 Other revolving credit and installment 27,123 27,530 Total consumer 217,130 204,825 Total unfunded credit commitments $ 568,487 558,701 Allowance for Credit Losses Table 6.5 presents the allowance for credit losses, which consists of the allowance for loan losses and the allowance for unfunded credit commitments. Table 6.5: Allowance for Credit Losses Quarter ended March 31, (in millions) 2019 2018 Balance, beginning of period $ 10,707 11,960 Provision for credit losses 845 191 Interest income on certain impaired loans (1) (39 ) (43 ) Loan charge-offs: Commercial: Commercial and industrial (176 ) (164 ) Real estate mortgage (12 ) (2 ) Real estate construction (1 ) — Lease financing (11 ) (17 ) Total commercial (200 ) (183 ) Consumer: Real estate 1-4 family first mortgage (43 ) (41 ) Real estate 1-4 family junior lien mortgage (34 ) (47 ) Credit card (437 ) (405 ) Automobile (187 ) (300 ) Other revolving credit and installment (162 ) (180 ) Total consumer (863 ) (973 ) Total loan charge-offs (1,063 ) (1,156 ) Loan recoveries: Commercial: Commercial and industrial 43 79 Real estate mortgage 6 17 Real estate construction 3 4 Lease financing 3 5 Total commercial 55 105 Consumer: Real estate 1-4 family first mortgage 55 59 Real estate 1-4 family junior lien mortgage 43 55 Credit card 85 73 Automobile 96 92 Other revolving credit and installment 34 31 Total consumer 313 310 Total loan recoveries 368 415 Net loan charge-offs (695 ) (741 ) Other 3 (54 ) Balance, end of period $ 10,821 11,313 Components: Allowance for loan losses $ 9,900 10,373 Allowance for unfunded credit commitments 921 940 Allowance for credit losses $ 10,821 11,313 Net loan charge-offs (annualized) as a percentage of average total loans 0.30 % 0.32 Allowance for loan losses as a percentage of total loans 1.04 1.10 Allowance for credit losses as a percentage of total loans 1.14 1.19 (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 6.6 summarizes the activity in the allowance for credit losses by our commercial and consumer portfolio segments. Table 6.6: Allowance Activity by Portfolio Segment 2019 2018 (in millions) Commercial Consumer Total Commercial Consumer Total Quarter ended March 31, Balance, beginning of period $ 6,417 4,290 10,707 6,632 5,328 11,960 Provision for credit losses 164 681 845 169 22 191 Interest income on certain impaired loans (11 ) (28 ) (39 ) (11 ) (32 ) (43 ) Loan charge-offs (200 ) (863 ) (1,063 ) (183 ) (973 ) (1,156 ) Loan recoveries 55 313 368 105 310 415 Net loan charge-offs (145 ) (550 ) (695 ) (78 ) (663 ) (741 ) Other 3 — 3 (4 ) (50 ) (54 ) Balance, end of period $ 6,428 4,393 10,821 6,708 4,605 11,313 Table 6.7 disaggregates our allowance for credit losses and recorded investment in loans by impairment methodology. Table 6.7: Allowance by Impairment Methodology Allowance for credit losses Recorded investment in loans (in millions) Commercial Consumer Total Commercial Consumer Total March 31, 2019 Collectively evaluated (1) $ 5,863 3,448 9,311 508,379 420,010 928,389 Individually evaluated (2) 565 945 1,510 3,847 12,813 16,660 PCI (3) — — — — 3,200 3,200 Total $ 6,428 4,393 10,821 512,226 436,023 948,249 December 31, 2018 Collectively evaluated (1) $ 5,903 3,361 9,264 510,180 421,574 931,754 Individually evaluated (2) 514 929 1,443 3,221 13,126 16,347 PCI (3) — — — 4 5,005 5,009 Total $ 6,417 4,290 10,707 513,405 439,705 953,110 (1) Represents loans collectively evaluated for impairment in accordance with Accounting Standards Codification (ASC) 450-20, Loss Contingencies (formerly Statement of Financial Accounting Standards (FAS) 5), and pursuant to amendments by ASU 2010-20 regarding allowance for non-impaired loans. (2) Represents loans individually evaluated for impairment in accordance with ASC 310-10, Receivables (formerly FAS 114), and pursuant to amendments by ASU 2010-20 regarding allowance for impaired loans. (3) Represents the allowance and related loan carrying value determined in accordance with ASC 310-30 , Receivables – Loans and Debt Securities Acquired with Deteriorated Credit Quality (formerly SOP 03-3) and pursuant to amendments by ASU 2010-20 regarding allowance for PCI loans. Credit Quality We monitor credit quality by evaluating various attributes and utilize such information in our evaluation of the appropriateness of the allowance for credit losses. The following sections provide the credit quality indicators we most closely monitor. The credit quality indicators are generally based on information as of our financial statement date, with the exception of updated Fair Isaac Corporation (FICO) scores and updated loan-to-value (LTV)/combined LTV (CLTV). We obtain FICO scores at loan origination and the scores are generally updated at least quarterly, except in limited circumstances, including compliance with the Fair Credit Reporting Act (FCRA). Generally, the LTV and CLTV indicators are updated in the second month of each quarter, with updates no older than December 31, 2018 . 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 6.8 provides a breakdown of outstanding commercial loans by risk category. Of the $15.6 billion in criticized commercial and industrial loans and $5.0 billion in criticized commercial real estate (CRE) loans at March 31, 2019 , $2.0 billion and $735 million , respectively, have been placed on nonaccrual status and written down to net realizable collateral value. Table 6.8: Commercial Loans by Risk Category (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2019 By risk category: Pass $ 333,502 117,353 21,612 18,138 490,605 Criticized 15,632 4,760 245 984 21,621 Total commercial loans (excluding PCI) 349,134 122,113 21,857 19,122 512,226 Total commercial PCI loans (carrying value) — — — — — Total commercial loans $ 349,134 122,113 21,857 19,122 512,226 December 31, 2018 By risk category: Pass $ 335,412 116,514 22,207 18,671 492,804 Criticized 14,783 4,500 289 1,025 20,597 Total commercial loans (excluding PCI) 350,195 121,014 22,496 19,696 513,401 Total commercial PCI loans (carrying value) 4 — — — 4 Total commercial loans $ 350,199 121,014 22,496 19,696 513,405 Table 6.9 provides past due information for commercial loans, which we monitor as part of our credit risk management practices. Table 6.9: Commercial Loans by Delinquency Status (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2019 By delinquency status: Current-29 days past due (DPD) and still accruing $ 346,696 121,196 21,591 18,871 508,354 30-89 DPD and still accruing 410 198 225 175 1,008 90+ DPD and still accruing 42 20 5 — 67 Nonaccrual loans 1,986 699 36 76 2,797 Total commercial loans (excluding PCI) 349,134 122,113 21,857 19,122 512,226 Total commercial PCI loans (carrying value) — — — — — Total commercial loans $ 349,134 122,113 21,857 19,122 512,226 December 31, 2018 By delinquency status: Current-29 DPD and still accruing $ 348,158 120,176 22,411 19,443 510,188 30-89 DPD and still accruing 508 207 53 163 931 90+ DPD and still accruing 43 51 — — 94 Nonaccrual loans 1,486 580 32 90 2,188 Total commercial loans (excluding PCI) 350,195 121,014 22,496 19,696 513,401 Total commercial PCI loans (carrying value) 4 — — — 4 Total commercial loans $ 350,199 121,014 22,496 19,696 513,405 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 6.10 provides the outstanding balances of our consumer portfolio by delinquency status. Table 6.10: Consumer Loans by Delinquency Status (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Credit card Automobile Other revolving credit and installment Total March 31, 2019 By delinquency status: Current-29 DPD $ 266,098 32,373 37,334 43,836 34,869 414,510 30-59 DPD 1,441 243 251 777 127 2,839 60-89 DPD 494 118 193 222 78 1,105 90-119 DPD 231 70 174 74 74 623 120-179 DPD 223 78 327 4 24 656 180+ DPD 683 201 — — 15 899 Government insured/guaranteed loans (1) 11,966 — — — — 11,966 Loans held at fair value 225 — — — — 225 Total consumer loans (excluding PCI) 281,361 33,083 38,279 44,913 35,187 432,823 Total consumer PCI loans (carrying value) (2) 3,184 16 — — — 3,200 Total consumer loans $ 284,545 33,099 38,279 44,913 35,187 436,023 December 31, 2018 By delinquency status: Current-29 DPD $ 263,881 33,644 38,008 43,604 35,794 414,931 30-59 DPD 1,411 247 292 1,040 140 3,130 60-89 DPD 549 126 212 314 87 1,288 90-119 DPD 257 74 192 109 80 712 120-179 DPD 225 77 320 2 27 651 180+ DPD 822 213 1 — 20 1,056 Government insured/guaranteed loans (1) 12,688 — — — — 12,688 Loans held at fair value 244 — — — — 244 Total consumer loans (excluding PCI) 280,077 34,381 39,025 45,069 36,148 434,700 Total consumer PCI loans (carrying value) (2) 4,988 17 — — — 5,005 Total consumer loans $ 285,065 34,398 39,025 45,069 36,148 439,705 (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 $7.0 billion at March 31, 2019 , compared with $7.7 billion at December 31, 2018 . (2) 19% of the adjusted unpaid principal balance for consumer PCI loans are 30+ DPD at March 31, 2019 , compared with 18% at December 31, 2018 . Of the $2.2 billion of consumer loans not government insured/guaranteed that are 90 days or more past due at March 31, 2019 , $807 million was accruing, compared with $2.4 billion past due and $885 million accruing at December 31, 2018 . Real estate 1-4 family first mortgage loans 180 days or more past due totaled $683 million , or 0.2% of total first mortgages (excluding PCI), at March 31, 2019 , compared with $822 million , or 0.3% , at December 31, 2018 . Table 6.11 provides a breakdown of our consumer portfolio by FICO. 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 $8.7 billion at March 31, 2019 , and $8.9 billion at December 31, 2018 . Table 6.11: Consumer Loans by FICO (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Credit card Automobile Other revolving credit and installment Total March 31, 2019 By FICO: < 600 $ 4,106 1,410 3,150 6,907 685 16,258 600-639 2,843 979 2,615 4,412 690 11,539 640-679 5,813 1,829 6,173 6,209 1,752 21,776 680-719 13,406 3,775 9,206 7,279 3,265 36,931 720-759 26,943 5,130 7,769 6,795 4,235 50,872 760-799 56,626 5,967 5,082 5,958 5,261 78,894 800+ 154,956 12,724 3,759 7,239 8,242 186,920 No FICO available 4,477 1,269 525 114 2,371 8,756 FICO not required — — — — 8,686 8,686 Government insured/guaranteed loans (1) 12,191 — — — — 12,191 Total consumer loans (excluding PCI) 281,361 33,083 38,279 44,913 35,187 432,823 Total consumer PCI loans (carrying value) (2) 3,184 16 — — — 3,200 Total consumer loans $ 284,545 33,099 38,279 44,913 35,187 436,023 December 31, 2018 By FICO: < 600 $ 4,273 1,454 3,292 7,071 697 16,787 600-639 2,974 994 2,777 4,431 725 11,901 640-679 5,810 1,898 6,464 6,225 1,822 22,219 680-719 13,568 3,908 9,445 7,354 3,384 37,659 720-759 27,258 5,323 7,949 6,853 4,395 51,778 760-799 57,193 6,315 5,227 5,947 5,322 80,004 800+ 151,465 13,190 3,794 7,099 8,411 183,959 No FICO available 4,604 1,299 77 89 2,507 8,576 FICO not required — — — — 8,885 8,885 Government insured/guaranteed loans (1) 12,932 — — — — 12,932 Total consumer loans (excluding PCI) 280,077 34,381 39,025 45,069 36,148 434,700 Total consumer PCI loans (carrying value) (2) 4,988 17 — — — 5,005 Total consumer loans $ 285,065 34,398 39,025 45,069 36,148 439,705 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. (2) 43% of the adjusted unpaid principal balance for consumer PCI loans have FICO scores less than 680 and 13% where no FICO is available to us at March 31, 2019 , compared with 45% and 15% , respectively, at December 31, 2018 . 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 6.12 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 6.12: Consumer Loans by LTV/CLTV March 31, 2019 December 31, 2018 (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% $ 145,143 15,156 160,299 147,666 15,753 163,419 60.01-80% 105,991 10,784 116,775 104,477 11,183 115,660 80.01-100% 15,477 4,725 20,202 12,372 4,874 17,246 100.01-120% (1) 1,184 1,482 2,666 1,211 1,596 2,807 > 120% (1) 472 550 1,022 484 578 1,062 No LTV/CLTV available 903 386 1,289 935 397 1,332 Government insured/guaranteed loans (2) 12,191 — 12,191 12,932 — 12,932 Total consumer loans (excluding PCI) 281,361 33,083 314,444 280,077 34,381 314,458 Total consumer PCI loans (carrying value) (3) 3,184 16 3,200 4,988 17 5,005 Total consumer loans $ 284,545 33,099 317,644 285,065 34,398 319,463 (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. (3) 10% of the adjusted unpaid principal balance for consumer PCI loans have LTV/CLTV amounts greater than 80% at both March 31, 2019 and December 31, 2018 . NONACCRUAL LOANS Table 6.13 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 6.13: Nonaccrual Loans (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 1,986 1,486 Real estate mortgage 699 580 Real estate construction 36 32 Lease financing 76 90 Total commercial 2,797 2,188 Consumer: Real estate 1-4 family first mortgage 3,026 3,183 Real estate 1-4 family junior lien mortgage 916 945 Automobile 116 130 Other revolving credit and installment 50 50 Total consumer 4,108 4,308 Total nonaccrual loans (excluding PCI) $ 6,905 6,496 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 $4.2 billion and $4.6 billion at March 31, 2019 and December 31, 2018 , respectively, which included $3.0 billion and $3.2 billion , respectively, of loans that are government insured/guaranteed. Under the Consumer Financial Protection Bureau guidelines, we do not commence the foreclosure process on consumer real estate loans until after the loan is 120 days delinquent. 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 $243 million at March 31, 2019 , and $370 million at December 31, 2018 , are not included in past due and still accruing loans even when they are 90 days or more contractually past due. 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 6.14 shows non-PCI loans 90 days or more past due and still accruing by class for loans not government insured/guaranteed. Table 6.14: Loans 90 Days or More Past Due and Still Accruing (1) (in millions) Mar 31, 2019 Dec 31, 2018 Total (excluding PCI): $ 7,870 8,704 Less: FHA insured/VA guaranteed (1) 6,996 7,725 Total, not government insured/guaranteed $ 874 979 By segment and class, not government insured/guaranteed: Commercial: Commercial and industrial $ 42 43 Real estate mortgage 20 51 Real estate construction 5 — Total commercial 67 94 Consumer: Real estate 1-4 family first mortgage 117 124 Real estate 1-4 family junior lien mortgage 28 32 Credit card 502 513 Automobile 68 114 Other revolving credit and installment 92 102 Total consumer 807 885 Total, not government insured/guaranteed $ 874 979 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. IMPAIRED LOANS Table 6.15 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 6.15 includes trial modifications that totaled $136 million at March 31, 2019 , and $149 million at December 31, 2018 . For additional information on our impaired loans and allowance for credit losses, see Note 1 (Summary of Significant Accounting Policies) in our 2018 Form 10-K. Table 6.15: Impaired Loans Summary Recorded investment (in millions) Unpaid principal balance (1) Impaired loans Impaired loans with related allowance for credit losses Related allowance for credit losses March 31, 2019 Commercial: Commercial and industrial $ 3,493 2,569 2,271 364 Real estate mortgage 1,310 1,126 1,071 161 Real estate construction 87 56 56 10 Lease financing 119 96 96 30 Total commercial 5,009 3,847 3,494 565 Consumer: Real estate 1-4 family first mortgage 11,953 10,440 4,354 526 Real estate 1-4 family junior lien mortgage 1,843 1,658 1,093 181 Credit card 474 473 473 188 Automobile 145 85 42 8 Other revolving credit and installment 164 157 138 42 Total consumer (2) 14,579 12,813 6,100 945 Total impaired loans (excluding PCI) $ 19,588 16,660 9,594 1,510 December 31, 2018 Commercial: Commercial and industrial $ 3,057 2,030 1,730 319 Real estate mortgage 1,228 1,032 1,009 154 Real estate construction 74 47 46 9 Lease financing 146 112 112 32 Total commercial 4,505 3,221 2,897 514 Consumer: Real estate 1-4 family first mortgage 12,309 10,738 4,420 525 Real estate 1-4 family junior lien mortgage 1,886 1,694 1,133 183 Credit card 449 449 449 172 Automobile 153 89 43 8 Other revolving credit and installment 162 156 136 41 Total consumer (2) 14,959 13,126 6,181 929 Total impaired loans (excluding PCI) $ 19,464 16,347 9,078 1,443 (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 $1.3 billion at both March 31, 2019 and December 31, 2018, 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 $570 million and $513 million at March 31, 2019 and December 31, 2018 , respectively. Table 6.16 provides the average recorded investment in impaired loans and the amount of interest income recognized on impaired loans by portfolio segment and class. Table 6.16: Average Recorded Investment in Impaired Loans Quarter ended March 31, 2019 2018 (in millions) Average recorded investment Recognized interest income Average recorded investment Recognized interest income Commercial: Commercial and industrial $ 2,346 23 2,404 36 Real estate mortgage 1,055 15 1,244 28 Real estate construction 52 2 58 1 Lease financing 108 — 129 — Total commercial 3,561 40 3,835 65 Consumer: Real estate 1-4 family first mortgage 10,624 153 12,073 172 Real estate 1-4 family junior lien mortgage 1,679 26 1,889 29 Credit card 461 15 370 10 Automobile 87 4 85 3 Other revolving credit and installment 156 4 133 2 Total consumer 13,007 202 14,550 216 Total impaired loans (excluding PCI) $ 16,568 242 18,385 281 Interest income: Cash basis of accounting $ 59 81 Other (1) 183 200 Total interest income $ 242 281 (1) Includes interest recognized on accruing TDRs, interest recognized related to certain impaired loans which have an allowance calculated using discounting, and amortization of purchase accounting adjustments related to certain impaired loans. TROUBLED DEBT RESTRUCTURINGS (TDRs) When, for economic or legal reasons related to a borrower’s financial difficulties, we grant a concession for other than an insignificant period of time to a borrower that we would not otherwise consider, the related loan is classified as a TDR, the balance of which totaled $15.3 billion and $15.5 billion at March 31, 2019 and December 31, 2018 , respectively. We do not consider loan resolutions such as foreclosure or short sale to be a TDR. We may require some consumer borrowers experiencing financial difficulty to make trial payments generally for a period of three to four months, according to the terms of a planned permanent modification, to determine if they can perform according to those terms. These arrangements represent trial modifications, which we classify and account for as TDRs. While loans are in trial payment programs, their original terms are not considered modified and they continue to advance through delinquency status and accrue interest according to their original terms. Table 6.17 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 6.17: TDR Modifications Primary modification type (1) Financial effects of modifications (in millions) Principal (2) Interest rate reduction Other concessions (3) Total Charge- offs (4) Weighted average interest rate reduction Recorded investment related to interest rate reduction (5) Quarter ended March 31, 2019 Commercial: Commercial and industrial $ — 11 554 565 13 0.68 % $ 11 Real estate mortgage — 2 73 75 — 0.95 2 Real estate construction — — 3 3 — — — Lease financing — — — — — — — Total commercial — 13 630 643 13 0.73 13 Consumer: Real estate 1-4 family first mortgage 35 3 294 332 1 1.95 19 Real estate 1-4 family junior lien mortgage 2 11 25 38 1 2.29 12 Credit card — 97 — 97 — 13.20 97 Automobile 2 1 12 15 6 5.38 1 Other revolving credit and installment — 11 3 14 — 7.58 11 Trial modifications (6) — — — — — — — Total consumer 39 123 334 496 8 10.27 140 Total $ 39 136 964 1,139 21 9.44 % $ 153 Quarter ended March 31, 2018 Commercial: Commercial and industrial $ — 9 48

Leasing Activity

Leasing Activity	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases as Lessor and Lessee Disclosure [Text Block]	The information below provides a summary of our leasing activities as a lessor and lessee. As a Lessor Table 7.1 presents the composition of our leasing revenue and Table 7.2 provides the components of our investment in lease financing. Table 7.1: Leasing Revenue (in millions) Quarter ended March 31, 2019 Interest income on lease financing $ 223 Variable revenues on lease financing 24 Total lease financing revenue 247 Fixed revenues on operating leases 373 Variable revenues on operating leases 18 Total operating lease revenue 391 Other lease-related revenues (1) 28 Total lease revenue $ 666 (1) Predominantly includes net gains on disposition of lease assets Table 7.2: Investment in Lease Financing (in millions) Mar 31, 2019 Lease receivables $ 17,640 Residual asset values 4,169 Unearned income (2,687 ) Lease financing $ 19,122 Our net investment in financing and sales-type leases includes $2.0 billion of leveraged leases at March 31, 2019 . As shown in Table 9.1 , included in Note 9 (Other Assets), we had $8.8 billion in operating lease assets at March 31, 2019 , which was net of $3.2 billion of accumulated depreciation. Depreciation expense for the lease assets was $229 million for first quarter 2019. Dispositions of operating lease assets for first quarter 2019, resulted in net gains of $14 million , included in lease income. Table 7.3 presents future lease payments owed by our lessees. Table 7.3: Maturities of Lease Receivables March 31, 2019 (in millions) Direct financing and sales- type leases Operating leases Remainder of 2019 $ 4,143 953 2020 4,866 862 2021 3,698 568 2022 1,857 385 2023 1,035 252 Thereafter 2,041 581 Total lease receivables $ 17,640 3,601 As a Lessee Substantially all of our leases are operating leases. Table 7.4 presents balances for our operating leases. Table 7.4: Operating Lease Right of Use (ROU) Assets and Lease Liabilities (in millions) Mar 31, 2019 ROU assets $ 4,869 Lease liabilities 5,405 Table 7.5 provides the composition of our lease costs. Table 7.5: Lease Costs (in millions) Quarter ended March 31, 2019 Fixed lease expense - operating leases 297 Variable lease expense 73 Other (1) (8 ) Total lease costs $ 362 (1) Predominantly includes sublease rental income and gains recognized from sale leaseback transactions Tables 7.6 and 7.7 provide the future lease payments under operating leases as of December 31, 2018 and March 31, 2019, respectively. Table 7.7 also includes information on the remaining average lease term and discount rate. Table 7.6: Lease Payments on Operating Leases Prior to Adoption of ASU 2016-02 - Leases (in millions) December 31, 2018 2019 $ 1,174 2020 1,056 2021 880 2022 713 2023 577 Thereafter 1,654 Total $ 6,054 Table 7.7: Lease Payments on Operating Leases Subsequent to Adoption of ASU 2016-02 - Leases (in millions, except for weighted averages) March 31, 2019 Remainder of 2019 $ 777 2020 1,123 2021 942 2022 770 2023 628 Thereafter 1,936 Total lease payments 6,176 Less: imputed interest 771 Total operating lease liabilities $ 5,405 Weighted average remaining lease term (in years) 7.3 Weighted average discount rate 3.2 % Our operating leases predominantly expire within the next 15 years , with the longest lease expiring in 2105 . We do not include renewal or termination options in the establishment of the lease term when we are not reasonably certain that we will exercise them. As of March 31, 2019 , we had additional operating leases commitments of $164 million , predominantly for real estate, which leases had not yet commenced. These leases will commence by 2022 and have lease terms of 1 year to 11 years .

Equity Securities

Equity Securities	3 Months Ended
	Mar. 31, 2019
Equity Securities [Abstract]
Equity Securities	Note 8: Equity Securities Table 8.1 provides a summary of our equity securities by business purpose and accounting method, including equity securities with readily determinable fair values (marketable) and those without readily determinable fair values (nonmarketable). Table 8.1: Equity Securities Mar 31, Dec 31, (in millions) 2019 2018 Held for trading at fair value: Marketable equity securities $ 20,933 19,449 Not held for trading: Fair value: Marketable equity securities (1) 5,135 4,513 Nonmarketable equity securities (2) 6,518 5,594 Total equity securities at fair value 11,653 10,107 Equity method: Low-income housing tax credit investments 10,925 10,999 Private equity 3,890 3,832 Tax-advantaged renewable energy 3,041 3,073 New market tax credit and other 305 311 Total equity method 18,161 18,215 Other: Federal Reserve Bank stock and other at cost (3) 5,732 5,643 Private equity (4) 1,961 1,734 Total equity securities not held for trading 37,507 35,699 Total equity securities $ 58,440 55,148 (1) Includes $3.5 billion and $3.2 billion at March 31, 2019 , and December 31, 2018 , respectively, related to securities held as economic hedges of our deferred compensation plan obligations. (2) Includes $6.4 billion and $5.5 billion at March 31, 2019 , and December 31, 2018 , respectively, related to investments for which we elected the fair value option. See Note 16 (Fair Value of Assets and Liabilities) for additional information. (3) Includes $5.7 billion and $5.6 billion at March 31, 2019 and December 31, 2018 , respectively, related to investments in Federal Reserve Bank and Federal Home Loan Bank stock. (4) Represents nonmarketable equity securities for which we have elected to account for the security under the measurement alternative. Equity Securities Held for Trading Equity securities held for trading purposes are marketable equity securities traded on organized exchanges. These securities are held as part of our customer accommodation trading activities. For more information on these activities, see Note 4 (Trading Activities). Equity Securities Not Held for Trading We also hold equity securities unrelated to trading activities. These securities include private equity and tax credit investments, securities held as economic hedges or to meet regulatory requirements (for example, Federal Reserve Bank and Federal Home Loan Bank stock). Equity securities not held for trading purposes are accounted for at either fair value, equity method, cost or the measurement alternative. FAIR VALUE Marketable equity securities held for purposes other than trading primarily consist of exchange-traded equity funds held to economically hedge obligations related to our deferred compensation plans and to a lesser extent other holdings of publicly traded equity securities held for investment purposes. We have elected to account for certain nonmarketable equity securities under the fair value method, and substantially all of these securities are economically hedged with equity derivatives. EQUITY METHOD Our equity method investments consist of tax credit and private equity investments, the majority of which are our low-income housing tax credit (LIHTC) investments. We invest in affordable housing projects that qualify for the LIHTC, which are designed to promote private development of low-income housing. These investments generate a return mostly through realization of federal tax credit and other tax benefits. In first quarter 2019 , we recognized pre-tax losses of $273 million related to our LIHTC investments, compared with $280 million in first quarter 2018 . These losses were recognized in other noninterest income. We also recognized total tax benefits of $370 million in first quarter 2019 , which included tax credits recorded to income taxes of $302 million . In first quarter 2018 , total tax benefits were $359 million , which included tax credits of $290 million . We are periodically required to provide additional financial support during the investment period. A liability is recognized for unfunded commitments that are both legally binding and probable of funding. These commitments are predominantly funded within three years of initial investment. Our liability for these unfunded commitments was $3.7 billion at March 31, 2019 , and $3.6 billion at December 31, 2018 . This liability for unfunded commitments is included in long-term debt. OTHER The remaining portion of our nonmarketable equity securities portfolio consists of securities accounted for using the cost or measurement alternative method. Realized Gains and Losses Table 8.2 provides a summary of the net gains and losses for equity securities not held for trading. Gains and losses for securities held for trading are reported in net gains from trading activities. Table 8.2: Net Gains (Losses) from Equity Securities Not Held for Trading Quarter ended March 31, (in millions) 2019 2018 Net gains (losses) from equity securities carried at fair value: Marketable equity securities $ 377 8 Nonmarketable equity securities 936 109 Total equity securities carried at fair value 1,313 117 Net gains (losses) from nonmarketable equity securities not carried at fair value: Impairment write-downs (36 ) (20 ) Net unrealized gains related to measurement alternative observable transactions 185 228 Net realized gains on sale 237 498 All other — 18 Total nonmarketable equity securities not carried at fair value 386 724 Net losses from economic hedge derivatives (1) (885 ) (58 ) Total net gains from equity securities $ 814 783 (1) Includes net gains (losses) on derivatives not designated as hedging instruments. Measurement Alternative Table 8.3 provides additional information about the impairment write-downs and observable price adjustments related to nonmarketable equity securities accounted for under the measurement alternative. Gains and losses related to these adjustments are also included in Table 8.2. Table 8.3: Net Gains (Losses) from Measurement Alternative Equity Securities Quarter ended March 31, (in millions) 2019 2018 Net gains (losses) recognized in earnings during the period: Gross unrealized gains due to observable price changes $ 185 228 Impairment write-downs (22 ) (7 ) Realized net gains from sale 23 75 Total net gains recognized during the period $ 186 296 Table 8.4 presents cumulative carrying value adjustments to nonmarketable equity securities accounted for under the measurement alternative that were still held as of the balance sheet date. Table 8.4: Measurement Alternative Cumulative Gains (Losses) Mar 31, Dec 31, (in millions) 2019 2018 Cumulative gains (losses): Gross unrealized gains due to observable price changes $ 577 415 Gross unrealized losses due to observable price changes (25 ) (25 ) Impairment write-downs (55 ) (33 )

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2019
Other Assets [Abstract]
Other Assets	Note 9: Other Assets Table 9.1 presents the components of other assets. Table 9.1: Other Assets (in millions) Mar 31, Dec 31, Corporate/bank-owned life insurance $ 19,842 19,751 Accounts receivable (1) 32,405 34,281 Interest receivable 6,277 6,084 Customer relationship and other amortized intangibles 508 545 Foreclosed assets: Residential real estate: Government insured/guaranteed (1) 75 88 Non-government insured/guaranteed 229 229 Non-residential real estate 132 134 Operating lease assets (lessor) 8,793 9,036 Operating lease ROU assets (lessee) (2) 4,869 — Due from customers on acceptances 243 258 Other 9,294 9,444 Total other assets $ 82,667 79,850 (1) 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 2018 Form 10-K. (2) We recognized operating lease right of use (ROU) assets effective January 1, 2019, in connection with the adoption of ASU 2016-02 – Leases. For more information, see Note 1 (Summary of Significant Accounting Policies) in this Report.

Securitizations and Variable In

Securitizations and Variable Interest Entities	3 Months Ended
	Mar. 31, 2019
Securitizations and Variable Interest Entities [Abstract]
Securitizations and Variable Interest Entities	Note 10: Securitizations and Variable Interest Entities Involvement with Special Purpose Entities (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 9 (Securitizations and Variable Interest Entities) to Financial Statements in our 2018 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 10.1 provides the classifications of assets and liabilities in our balance sheet for our transactions with VIEs. Table 10.1: Balance Sheet Transactions with VIEs (in millions) VIEs that we do not consolidate VIEs that we consolidate Transfers that we account for as secured borrowings Total March 31, 2019 Cash and due from banks $ — 16 — 16 Interest-earning deposits with banks — 8 — 8 Debt securities: Trading debt securities 1,848 55 200 2,103 Available-for-sale debt securities (1) 2,063 — 248 2,311 Held-to-maturity debt securities 524 — — 524 Loans 1,398 14,368 91 15,857 Mortgage servicing rights 13,515 — — 13,515 Derivative assets 74 — — 74 Equity securities 10,973 112 — 11,085 Other assets — 252 6 258 Total assets 30,395 14,811 545 45,751 Short-term borrowings — — 427 427 Derivative liabilities 6 — (2) — 6 Accrued expenses and other liabilities 198 205 (2) 7 410 Long-term debt 3,750 775 (2) 90 4,615 Total liabilities 3,954 980 524 5,458 Noncontrolling interests — 31 — 31 Net assets $ 26,441 13,800 21 40,262 December 31, 2018 Cash and due from banks $ — 139 — 139 Interest-earning deposits with banks — 8 — 8 Debt securities: Trading debt securities 2,110 45 200 2,355 Available-for-sale debt securities (1) 2,686 — 317 3,003 Held-to-maturity debt securities 510 — — 510 Loans 1,433 13,564 94 15,091 Mortgage servicing rights 14,761 — — 14,761 Derivative assets 53 — — 53 Equity securities 11,041 85 — 11,126 Other assets — 221 6 227 Total assets 32,594 14,062 617 47,273 Short-term borrowings — — 493 493 Derivative liabilities 26 — (2) — 26 Accrued expenses and other liabilities 231 191 (2) 8 430 Long-term debt 3,870 816 (2) 93 4,779 Total liabilities 4,127 1,007 594 5,728 Noncontrolling interests — 34 — 34 Net assets $ 28,467 13,021 23 41,511 (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 debt and equity securities, loans, MSRs, derivative assets and liabilities, other assets, other liabilities, and long-term debt, as appropriate. Table 10.2 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 10.2: Unconsolidated VIEs Carrying value – asset (liability) (in millions) Total VIE assets Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Net assets March 31, 2019 Residential mortgage loan securitizations: Conforming (2) $ 1,145,791 2,146 12,574 — (137 ) 14,583 Other/nonconforming 9,582 27 60 — — 87 Commercial mortgage securitizations 153,770 2,193 881 17 (41 ) 3,050 Collateralized debt obligations: Debt securities 641 — — 4 (20 ) (16 ) Asset-based finance structures 283 173 — — — 173 Tax credit structures 36,135 12,009 — — (3,750 ) 8,259 Collateralized loan obligations 203 4 — — — 4 Investment funds 204 47 — — — 47 Other (3) 1,648 207 — 47 — 254 Total $ 1,348,257 16,806 13,515 68 (3,948 ) 26,441 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,146 12,574 — 1,101 15,821 Other/nonconforming 27 60 — — 87 Commercial mortgage securitizations 2,193 881 27 11,795 14,896 Collateralized debt obligations: Debt securities — — 4 20 24 Asset-based finance structures 173 — — 72 245 Tax credit structures 12,009 — — 1,426 13,435 Collateralized loan obligations 4 — — — 4 Investment funds 47 — — — 47 Other (3) 207 — 48 157 412 Total $ 16,806 13,515 79 14,571 44,971 (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, 2018 Residential mortgage loan securitizations: Conforming (2) $ 1,172,833 2,377 13,811 — (171 ) 16,017 Other/nonconforming 10,596 453 57 — — 510 Commercial mortgage securitizations 153,350 2,409 893 (22 ) (40 ) 3,240 Collateralized debt obligations: Debt securities 659 — — 5 (20 ) (15 ) Asset-based finance structures 304 205 — — — 205 Tax credit structures 35,185 12,087 — — (3,870 ) 8,217 Collateralized loan obligations 2 — — — — — Investment funds 185 42 — — — 42 Other (3) 1,688 207 — 44 — 251 Total $ 1,374,802 17,780 14,761 27 (4,101 ) 28,467 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,377 13,811 — 1,183 17,371 Other/nonconforming 453 57 — — 510 Commercial mortgage securitizations 2,409 893 28 11,563 14,893 Collateralized debt obligations: Debt securities — — 5 20 25 Asset-based finance structures 205 — — 71 276 Tax credit structures 12,087 — — 1,420 13,507 Collateralized loan obligations — — — — — Investment funds 42 — — — 42 Other (3) 207 — 45 158 410 Total $ 17,780 14,761 78 14,415 47,034 (1) Includes total equity interests of $11.0 billion at both March 31, 2019 , and December 31, 2018 . 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 $578 million and $1.2 billion at March 31, 2019 , and December 31, 2018 , 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) Includes structured financing and credit-linked note structures. In Table 10.2 , “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 9 (Securitizations and Variable Interest Entities) to Financial Statements in our 2018 Form 10-K. INVESTMENT FUNDS We voluntarily waived a portion of our management fees for certain money market funds that are exempt from the consolidation analysis to ensure the funds maintained a minimum level of daily net investment income. The amount of fees waived was $10 million and $13 million in first quarter 2019 and 2018 , respectively. 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 we reported the debt securities issued to the VIEs as long-term junior subordinated debt with a carrying value of $2.0 billion and the preferred equity securities issued to the VIEs as preferred stock with a carrying value of $2.5 billion at both March 31, 2019 and December 31, 2018. These amounts are in addition to the involvements in these VIEs included in the preceding table. Loan Sales and Securitization Activity We periodically transfer consumer and CRE loans and other types of financial assets in securitization and whole loan sale transactions. We typically retain the servicing rights from these sales and may continue to hold other beneficial interests in the transferred financial assets. We may also provide liquidity to investors in the beneficial interests and credit enhancements in the form of standby letters of credit. Through these transfers we may be exposed to liability under limited amounts of recourse as well as standard representations and warranties we make to purchasers and issuers. Table 10.3 presents the cash flows for our transfers accounted for as sales in which we have continuing involvement with the transferred financial assets. Table 10.3: Cash Flows From Sales and Securitization Activity Mortgage loans (in millions) 2019 2018 Quarter ended March 31, Proceeds from securitizations and whole loan sales $ 36,507 50,587 Fees from servicing rights retained 780 845 Cash flows from other interests held (1) 111 185 Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions — 1 Agency securitizations (3) 17 33 Servicing advances, net of repayments (39 ) (36 ) (1) Cash flows from other interests held include principal and interest payments received on retained bonds and excess cash flows received on interest-only strips. (2) Consists of cash paid to repurchase loans from investors and cash paid to investors to reimburse them for losses on individual loans that are already liquidated. (3) Represent loans repurchased from GNMA, FNMA, and FHLMC under representation and warranty provisions included in our loan sales contracts. First quarter 2019 and 2018 exclude $ 1.9 billion and $2.9 billion , respectively, in delinquent insured/guaranteed loans that we service and have exercised our option to purchase out of GNMA pools. These loans are predominantly insured by the FHA or guaranteed by the VA. In first quarter 2019 and 2018 , we recognized net gains of $61 million and $58 million , respectively, from transfers accounted for as sales of financial assets, in which we have continuing involvement with the transferred assets. The first quarter 2018 net gain was revised from the amount previously reported to exclude transfers for which we do not have continuing involvement. These net gains predominantly relate to commercial mortgage securitizations, and residential mortgage securitizations where the loans were not already carried at fair value. Sales with continuing involvement during first quarter 2019 and 2018 largely related to securitizations of residential mortgages that are sold to the government-sponsored entities (GSEs), including FNMA, FHLMC and GNMA (conforming residential mortgage securitizations). During first quarter 2019 and 2018 , we transferred $34.1 billion and $47.3 billion , respectively, in fair value of residential mortgages to unconsolidated VIEs and third-party investors and recorded the transfers as sales. Substantially all of these transfers did not result in a gain or loss because the loans were already carried at fair value. In connection with all of these transfers, in first quarter 2019 , we recorded a $320 million servicing asset, measured at fair value using a Level 3 measurement technique, securities of $912 million , classified as Level 2, and a $3 million liability for repurchase losses which reflects management’s estimate of probable losses related to various representations and warranties for the loans transferred, initially measured at fair value. In first quarter 2018 , we recorded a $533 million servicing asset, securities of $3.8 billion , and a $3 million liability. Table 10.4 presents the key weighted-average assumptions we used to measure residential mortgage servicing rights at the date of securitization. Table 10.4: Residential Mortgage Servicing Rights Residential mortgage servicing rights 2019 2018 Quarter ended March 31, Prepayment speed (1) 13.5 % 9.6 Discount rate 8.1 7.3 Cost to service ($ per loan) (2) $ 94 117 (1) The prepayment speed assumption for residential mortgage servicing rights includes a blend of prepayment speeds and default rates. Prepayment speed assumptions are influenced by mortgage interest rate inputs as well as our estimation of drivers of borrower behavior. (2) Includes costs to service and unreimbursed foreclosure costs, which can vary period to period depending on the mix of modified government-guaranteed loans sold to GNMA. During first quarter 2019 and 2018 , we transferred $2.7 billion and $3.1 billion , respectively, in carrying value of commercial mortgages to unconsolidated VIEs and third-party investors and recorded the transfers as sales. These transfers resulted in gains of $47 million and $69 million in first quarter 2019 and 2018 , respectively, because the loans were carried at LOCOM. In connection with these transfers, in first quarter 2019 , we recorded a servicing asset of $26 million , initially measured at fair value using a Level 3 measurement technique, and no securities. In first quarter 2018 , we recorded a servicing asset of $34 million and no securities. Retained Interests from Unconsolidated VIEs Table 10.5 provides key economic assumptions and the sensitivity of the current fair value of residential mortgage servicing rights and other interests held related to unconsolidated VIEs to immediate adverse changes in those assumptions. “Other interests held” relate to residential and commercial mortgage loan securitizations. Residential mortgage-backed securities retained in securitizations issued through GSEs, such as FNMA, FHLMC and GNMA, are excluded from the table because these securities have a remote risk of credit loss due to the GSE guarantee. These securities also have economic characteristics similar to GSE mortgage-backed securities that we purchase, which are not included in the table. Subordinated interests include only those bonds whose credit rating was below AAA by a major rating agency at issuance. Senior interests include only those bonds whose credit rating was AAA by a major rating agency at issuance. The information presented excludes trading positions held in inventory. Table 10.5: Retained Interests from Unconsolidated VIEs Other interests held Residential mortgage servicing rights (1) Interest-only strips Commercial (2) ($ in millions, except cost to service amounts) Subordinated bonds Senior bonds Fair value of interests held at March 31, 2019 $ 13,336 15 679 295 Expected weighted-average life (in years) 5.9 3.5 6.9 5.5 Key economic assumptions: Prepayment speed assumption (3) 11.3 % 18.2 Decrease in fair value from: 10% adverse change $ 542 1 25% adverse change 1,280 1 Discount rate assumption 7.6 % 14.2 4.1 3.4 Decrease in fair value from: 100 basis point increase $ 548 — 38 14 200 basis point increase 1,049 — 74 26 Cost to service assumption ($ per loan) 103 Decrease in fair value from: 10% adverse change 290 25% adverse change 723 Credit loss assumption 4.5 % — Decrease in fair value from: 10% higher losses $ 2 — 25% higher losses 5 — Fair value of interests held at December 31, 2018 $ 14,649 16 668 309 Expected weighted-average life (in years) 6.5 3.6 7.0 5.7 Key economic assumptions: Prepayment speed assumption (3) 9.9 % 17.7 Decrease in fair value from: 10% adverse change $ 530 1 25% adverse change 1,301 1 Discount rate assumption 8.1 % 14.5 4.3 3.7 Decrease in fair value from: 100 basis point increase $ 615 — 37 14 200 basis point increase 1,176 1 72 28 Cost to service assumption ($ per loan) 106 Decrease in fair value from: 10% adverse change 316 25% adverse change 787 Credit loss assumption 5.1 % — Decrease in fair value from: 10% higher losses $ 2 — 25% higher losses 5 — (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 MSRs included in the previous table, we have a small portfolio of commercial MSRs with a fair value of $2.1 billion and $2.3 billion at March 31, 2019 , and December 31, 2018 , respectively. The nature of our commercial MSRs, which are carried at LOCOM, is different from our residential MSRs. Prepayment activity on serviced loans does not significantly impact the value of commercial MSRs because, unlike residential mortgages, commercial mortgages experience significantly lower prepayments due to certain contractual restrictions, impacting the borrower’s ability to prepay the mortgage. Additionally, for our commercial MSR portfolio, we are typically master/primary servicer, but not the special servicer, who is separately responsible for the servicing and workout of delinquent and foreclosed loans. It is the special servicer, similar to our role as servicer of residential mortgage loans, who is affected by higher servicing and foreclosure costs due to an increase in delinquent and foreclosed loans. Accordingly, prepayment speeds and costs to service are not key assumptions for commercial MSRs as they do not significantly impact the valuation. The primary economic driver impacting the fair value of our commercial MSRs is forward interest rates, which are derived from market observable yield curves used to price capital markets instruments. Market interest rates significantly affect interest earned on custodial deposit balances. The sensitivity of the current fair value to an immediate adverse 25% change in the assumption about interest earned on deposit balances at March 31, 2019 , and December 31, 2018 , results in a decrease in fair value of $292 million and $320 million , respectively. See Note 11 (Mortgage Banking Activities) for further information on our commercial MSRs. The sensitivities in the preceding paragraph 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 10.6 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 10.6: Off-Balance Sheet Loans Sold or Securitized Net charge-offs Total loans Delinquent loans and foreclosed assets (1) Quarter ended March 31, (in millions) Mar 31, 2019 Dec 31, 2018 Mar 31, 2019 Dec 31, 2018 2019 2018 Commercial: Real estate mortgage $ 106,087 105,173 976 1,008 79 10 Total commercial 106,087 105,173 976 1,008 79 10 Consumer: Real estate 1-4 family first mortgage 1,061,759 1,097,128 7,988 8,947 67 116 Total consumer 1,061,759 1,097,128 7,988 8,947 67 116 Total off-balance sheet sold or securitized loans (2) $ 1,167,846 1,202,301 8,964 9,955 146 126 (1) Includes $550 million and $675 million of commercial foreclosed assets and $575 million and $582 million of consumer foreclosed assets at March 31, 2019 , and December 31, 2018 , respectively. (2) At March 31, 2019 , and December 31, 2018 , the table includes total loans of $1.1 trillion at both dates, delinquent loans of $5.8 billion and $6.4 billion , and foreclosed assets of $451 million and $442 million , 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 10.7 presents a summary of financial assets and liabilities for asset transfers accounted for as secured borrowings and involvements with consolidated VIEs. Carrying values of “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 10.7: Transactions with Consolidated VIEs and Secured Borrowings Carrying value (in millions) Total VIE assets Assets Liabilities Noncontrolling interests Net assets March 31, 2019 Secured borrowings: Municipal tender option bond securitizations $ 562 454 (434 ) — 20 Residential mortgage securitizations 91 91 (90 ) — 1 Total secured borrowings 653 545 (524 ) — 21 Consolidated VIEs: Commercial and industrial loans and leases 8,643 8,629 (491 ) (12 ) 8,126 Nonconforming residential mortgage loan securitizations 1,556 1,362 (479 ) — 883 Commercial real estate loans 4,622 4,622 — — 4,622 Investment funds 185 185 (7 ) (15 ) 163 Other 13 13 (3 ) (4 ) 6 Total consolidated VIEs 15,019 14,811 (980 ) (31 ) 13,800 Total secured borrowings and consolidated VIEs $ 15,672 15,356 (1,504 ) (31 ) 13,821 December 31, 2018 Secured borrowings: Municipal tender option bond securitizations $ 627 523 (501 ) — 22 Residential mortgage securitizations 95 94 (93 ) — 1 Total secured borrowings 722 617 (594 ) — 23 Consolidated VIEs: Commercial and industrial loans and leases 8,215 8,204 (477 ) (14 ) 7,713 Nonconforming residential mortgage loan securitizations 1,947 1,732 (521 ) — 1,211 Commercial real estate loans 3,957 3,957 — — 3,957 Investment funds 155 155 (5 ) (15 ) 135 Other 14 14 (4 ) (5 ) 5 Total consolidated VIEs 14,288 14,062 (1,007 ) (34 ) 13,021 Total secured borrowings and consolidated VIEs $ 15,010 14,679 (1,601 ) (34 ) 13,044 For complete descriptions of our accounting for transfers accounted for as secured borrowings and involvements with consolidated VIEs, see Note 9 (Securitizations and Variable Interest Entities) to Financial Statements in our 2018 Form 10-K.

Mortgage Banking Activities

Mortgage Banking Activities	3 Months Ended
	Mar. 31, 2019
Mortgage Banking Activities [Abstract]
Mortgage Banking Activities	Note 11: 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 the fair value method to residential MSRs. Table 11.1 presents the changes in MSRs measured using the fair value method. Table 11.1: Analysis of Changes in Fair Value MSRs Quarter ended March 31, (in millions) 2019 2018 Fair value, beginning of period $ 14,649 13,625 Servicing from securitizations or asset transfers (1) 341 573 Sales and other (2) (281 ) (4 ) Net additions 60 569 Changes in fair value: Due to changes in valuation model inputs or assumptions: Mortgage interest rates (3) (940 ) 1,253 Servicing and foreclosure costs (4) 12 34 Discount rates (5) 100 — Prepayment estimates and other (6) (63 ) 43 Net changes in valuation model inputs or assumptions (891 ) 1,330 Changes due to collection/realization of expected cash flows over time (482 ) (483 ) Total changes in fair value (1,373 ) 847 Fair value, end of period $ 13,336 15,041 (1) Includes impacts associated with exercising our right to repurchase delinquent loans from GNMA loan securitization pools. Total reported MSRs may increase upon repurchase due to servicing liabilities associated with these loans. (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 or portfolios with servicing liabilities. (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) Reflects discount rate assumption change, excluding portion attributable to changes in mortgage interest rates. (6) 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 11.2 presents the changes in amortized MSRs. Table 11.2: Analysis of Changes in Amortized MSRs Quarter ended March 31, (in millions) 2019 2018 Balance, beginning of period $ 1,443 1,424 Purchases 24 18 Servicing from securitizations or asset transfers 26 34 Amortization (66 ) (65 ) Balance, end of period (1) $ 1,427 1,411 Fair value of amortized MSRs: Beginning of period $ 2,288 2,025 End of period 2,149 2,307 (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 11.3 at unpaid principal balance for loans serviced and subserviced for others and at book value for owned loans serviced. Table 11.3: Managed Servicing Portfolio (in billions) Mar 31, 2019 Dec 31, 2018 Residential mortgage servicing: Serviced for others $ 1,125 1,164 Owned loans serviced 331 334 Subserviced for others 26 4 Total residential servicing 1,482 1,502 Commercial mortgage servicing: Serviced for others 552 543 Owned loans serviced 122 121 Subserviced for others 9 9 Total commercial servicing 683 673 Total managed servicing portfolio $ 2,165 2,175 Total serviced for others $ 1,677 1,707 Ratio of MSRs to related loans serviced for others 0.88 % 0.94 Table 11.4 presents the components of mortgage banking noninterest income. Table 11.4: Mortgage Banking Noninterest Income Quarter ended March 31, (in millions) 2019 2018 Servicing income, net: Servicing fees: Contractually specified servicing fees $ 840 916 Late charges 33 44 Ancillary fees 38 40 Unreimbursed direct servicing costs (1) (70 ) (94 ) Net servicing fees 841 906 Changes in fair value of MSRs carried at fair value: Due to changes in valuation model inputs or assumptions (2) (A) (891 ) 1,330 Changes due to collection/realization of expected cash flows over time (482 ) (483 ) Total changes in fair value of MSRs carried at fair value (1,373 ) 847 Amortization (66 ) (65 ) Net derivative gains (losses) from economic hedges (3) (B) 962 (1,220 ) Total servicing income, net 364 468 Net gains on mortgage loan origination/sales activities (4) 344 466 Total mortgage banking noninterest income $ 708 934 Market-related valuation changes to MSRs, net of hedge results (2)(3) (A)+(B) $ 71 110 (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 11.1 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 15 (Derivatives) for additional discussion and detail. (4) Includes losses of $(151) million and gains of $625 million for first quarter 2019 and 2018, respectively, related to derivatives used as economic hedges of mortgage loans held for sale and derivative loan commitments.

Intangible Assets

Intangible Assets	3 Months Ended
	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Note 12: Intangible Assets Table 12.1 presents the gross carrying value of intangible assets and accumulated amortization. Table 12.1: Intangible Assets March 31, 2019 December 31, 2018 (in millions) Gross carrying value Accumulated amortization Net carrying value Gross carrying value Accumulated amortization Net carrying value Amortized intangible assets (1): MSRs (2) $ 4,211 (2,784 ) 1,427 4,161 (2,718 ) 1,443 Core deposit intangibles — — — 12,834 (12,834 ) — Customer relationship and other intangibles 3,937 (3,429 ) 508 3,994 (3,449 ) 545 Total amortized intangible assets $ 8,148 (6,213 ) 1,935 20,989 (19,001 ) 1,988 Unamortized intangible assets: MSRs (carried at fair value) (2) $ 13,336 14,649 Goodwill 26,420 26,418 Trademark 14 14 (1) Balances are excluded commencing in the period following full amortization. (2) See Note 11 (Mortgage Banking Activities) for additional information on MSRs. Table 12.2 provides the current year and estimated future amortization expense for amortized intangible assets. We based our projections of amortization expense shown below on existing asset balances at March 31, 2019 . Future amortization expense may vary from these projections. Table 12.2: Amortization Expense for Intangible Assets (in millions) Amortized MSRs Customer relationship and other intangibles Total Three months ended March 31, 2019 (actual) $ 66 30 96 Estimate for the remainder of 2019 $ 202 85 287 Estimate for year ended December 31, 2020 242 95 337 2021 206 81 287 2022 183 68 251 2023 154 59 213 2024 130 48 178 Table 12.3 shows the allocation of goodwill to our reportable operating segments. Table 12.3: Goodwill (in millions) Community Banking Wholesale Banking Wealth and Investment Management Consolidated Company December 31, 2017 $ 16,849 8,455 1,283 26,587 Reduction in goodwill related to divested businesses and other (142 ) — — (142 ) March 31, 2018 $ 16,707 8,455 1,283 26,445 December 31, 2018 $ 16,685 8,450 1,283 26,418 Foreign currency translation — 2 — 2 March 31, 2019 $ 16,685 8,452 1,283 26,420 We assess goodwill for impairment at a reporting unit level, which is one level below the operating segments. See Note 22 (Operating Segments) for further information on management reporting.

Guarantees, Pledged Assets and

Guarantees, Pledged Assets and Collateral, and other Commitments	3 Months Ended
	Mar. 31, 2019
Guarantees [Abstract]
Guarantees, Pledged Assets and Collateral, and other commitments	Note 13: Guarantees, Pledged Assets and Collateral, and Other Commitments 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 similar arrangements. For complete descriptions of our guarantees, see Note 15 (Guarantees, Pledged Assets and Collateral, and Other Commitments) to Financial Statements in our 2018 Form 10-K. Table 13.1 shows carrying value, maximum exposure to loss on our guarantees and the related non-investment grade amounts. Table 13.1: Guarantees – Carrying Value and Maximum Exposure to Loss Maximum exposure to loss (in millions) Carrying value of obligation (asset) Expires in one year or less Expires after one year through three years Expires after three years through five years Expires after five years Total Non- investment grade March 31, 2019 Standby letters of credit (1) $ 38 14,919 7,276 3,609 465 26,269 7,941 Securities lending and other indemnifications (2) — — — — 865 865 — Written put options (3) (394 ) 12,392 10,025 3,119 359 25,895 14,808 Loans and MLHFS sold with recourse (4) 53 109 660 1,160 10,420 12,349 9,168 Factoring guarantees (5) — 584 — — — 584 544 Other guarantees 1 — — 3 3,020 3,023 1 Total guarantees $ (302 ) 28,004 17,961 7,891 15,129 68,985 32,462 December 31, 2018 Standby letters of credit (1) $ 40 14,636 7,897 3,398 497 26,428 8,027 Securities lending and other indemnifications (2) — — 1 — 1,044 1,045 1 Written put options (3) (185 ) 17,243 10,502 3,066 400 31,211 21,732 Loans and MLHFS sold with recourse (4) 54 104 653 1,207 10,163 12,127 9,079 Factoring guarantees (5) — 889 — — — 889 751 Other guarantees 1 — — 3 2,959 2,962 1 Total guarantees $ (90 ) 32,872 19,053 7,674 15,063 74,662 39,591 (1) Total maximum exposure to loss includes direct pay letters of credit (DPLCs) of $7.2 billion and $7.5 billion at March 31, 2019 , and December 31, 2018 , respectively. (2) Includes indemnifications provided to certain third-party clearing agents. Outstanding customer obligations under these arrangements were $75 million and $70 million with related collateral of $790 million and $974 million at March 31, 2019 , and December 31, 2018 , respectively. (3) Written put options, which are in the form of derivatives, are also included in the derivative disclosures in Note 15 (Derivatives). Carrying value net asset position is a result of certain deferred premium option trades. (4) Represent recourse provided, predominantly to the GSEs, on loans sold under various programs and arrangements. (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 performance 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 6 (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 13.1 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 Federal Home Loan Bank (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 13.2 provides the total carrying amount of pledged assets by asset type and the fair value of pledged off-balance sheet securities for securities financings. The table excludes pledged consolidated VIE assets of $14.8 billion and $14.1 billion at March 31, 2019 , and December 31, 2018 , respectively, which can only be used to settle the liabilities of those entities. The table also excludes $545 million and $617 million in assets pledged in transactions with VIE’s accounted for as secured borrowings at March 31, 2019 , and December 31, 2018 , respectively. See Note 10 (Securitizations and Variable Interest Entities) for additional information on consolidated VIE assets and secured borrowings. Table 13.2: Pledged Assets (in millions) Mar 31, Dec 31, Related to trading activities: Debt securities $ 102,951 96,616 Equity securities 10,349 9,695 Total pledged assets related to trading activities (1) 113,300 106,311 Related to non-trading activities: Debt securities and other (2) 57,067 62,438 Mortgage loans held for sale and loans (3) 464,216 453,894 Total pledged assets related to non-trading activities 521,283 516,332 Total pledged assets $ 634,583 622,643 (1) Consists of pledged assets related to trading activities of $42.7 billion and $45.5 billion at March 31, 2019 , and December 31, 2018 , respectively and off-balance sheet securities of $70.6 billion and $60.8 billion as of the same dates, respectively, that are pledged as collateral for repurchase agreements and other securities financings. Total pledged assets related to trading activities includes $113.2 billion and $106.2 billion at March 31, 2019 , and December 31, 2018 , respectively, under agreements that permit the secured parties to sell or repledge the collateral. (2) Includes carrying value of $3.8 billion and $4.2 billion (fair value of $3.7 billion and $ 4.1 billion ) in collateral for repurchase agreements at March 31, 2019 , and December 31, 2018 , respectively, which are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Also includes $56 million and $68 million in collateral pledged under repurchase agreements at March 31, 2019 , and December 31, 2018 , respectively, that permit the secured parties to sell or repledge the collateral. Substantially all other pledged securities are pursuant to agreements that do not permit the secured party to sell or repledge the collateral. (3) Includes mortgage loans held for sale of $1.0 billion and $7.4 billion at March 31, 2019 , and December 31, 2018 , respectively. Substantially all of the total mortgage loans held for sale and loans are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Amounts exclude $578 million and $1.2 billion at March 31, 2019 , and December 31, 2018 , 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 SECURITIES FINANCING ACTIVITIES Table 13.3 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 13.3 , we also have balance sheet netting related to derivatives that is disclosed in Note 15 (Derivatives). Table 13.3: Offsetting – Securities Financing Activities (in millions) Mar 31, Dec 31, Assets: Resale and securities borrowing agreements Gross amounts recognized $ 135,549 112,662 Gross amounts offset in consolidated balance sheet (1) (19,688 ) (15,258 ) Net amounts in consolidated balance sheet (2) 115,861 97,404 Collateral not recognized in consolidated balance sheet (3) (115,063 ) (96,734 ) Net amount (4) $ 798 670 Liabilities: Repurchase and securities lending agreements Gross amounts recognized (5) $ 112,993 106,248 Gross amounts offset in consolidated balance sheet (1) (19,688 ) (15,258 ) Net amounts in consolidated balance sheet (6) 93,305 90,990 Collateral pledged but not netted in consolidated balance sheet (7) (93,095 ) (90,798 ) Net amount (8) $ 210 192 (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) Includes $98.6 billion and $80.1 billion classified on our consolidated balance sheet in federal funds sold and securities purchased under resale agreements at March 31, 2019 , and December 31, 2018 , respectively. Also includes securities purchased under long-term resale agreements (generally one year or more) classified in loans, which totaled $17.3 billion at both March 31, 2019 , and December 31, 2018 . (3) Represents the fair value of collateral we have received under enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized asset due from each counterparty. At March 31, 2019 , and December 31, 2018 , we have received total collateral with a fair value of $146.2 billion and $123.1 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 $70.9 billion at March 31, 2019 , and $60.8 billion at December 31, 2018 . (4) Represents the amount of our exposure that is not collateralized and/or is not subject to an enforceable MRA or MSLA. (5) For additional information on underlying collateral and contractual maturities, see the “Repurchase and Securities Lending Agreements” section in this Note. (6) Amount is classified in short-term borrowings on our consolidated balance sheet. (7) Represents the fair value of collateral we have pledged, related to enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized liability owed to each counterparty. At March 31, 2019 , and December 31, 2018 , we have pledged total collateral with a fair value of $115.2 billion and $108.8 billion , respectively, of which, the counterparty does not have the right to sell or repledge $3.8 billion as of March 31, 2019 and $4.4 billion as of December 31, 2018 . (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 in various ways. Most of our collateral consists of highly liquid securities. In addition, we underwrite and monitor the financial strength of our counterparties, monitor the fair value of collateral pledged relative to contractually required repurchase amounts, and monitor that our collateral is properly returned through the clearing and settlement process in advance of our cash repayment. Table 13.4 provides the gross amounts recognized on the balance sheet (before the effects of offsetting) of our liabilities for repurchase and securities lending agreements disaggregated by underlying collateral type. Table 13.4: Underlying Collateral Types of Gross Obligations (in millions) Mar 31, Dec 31, Repurchase agreements: Securities of U.S. Treasury and federal agencies $ 46,186 38,408 Securities of U.S. States and political subdivisions 61 159 Federal agency mortgage-backed securities 44,672 47,241 Non-agency mortgage-backed securities 1,767 1,875 Corporate debt securities 6,989 6,191 Asset-backed securities 2,337 2,074 Equity securities 1,033 992 Other 341 340 Total repurchases 103,386 97,280 Securities lending arrangements: Securities of U.S. Treasury and federal agencies 186 222 Federal agency mortgage-backed securities — 2 Corporate debt securities 390 389 Equity securities (1) 9,011 8,349 Other 20 6 Total securities lending 9,607 8,968 Total repurchases and securities lending $ 112,993 106,248 (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 13.5 provides the contractual maturities of our gross obligations under repurchase and securities lending agreements. Table 13.5: Contractual Maturities of Gross Obligations (in millions) Overnight/continuous Up to 30 days 30-90 days >90 days Total gross obligation March 31, 2019 Repurchase agreements $ 93,042 2,696 2,844 4,804 103,386 Securities lending arrangements 9,308 — 299 — 9,607 Total repurchases and securities lending (1) $ 102,350 2,696 3,143 4,804 112,993 December 31, 2018 Repurchase agreements $ 86,574 3,244 2,153 5,309 97,280 Securities lending arrangements 8,669 — 299 — 8,968 Total repurchases and securities lending (1) $ 95,243 3,244 2,452 5,309 106,248 (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. OTHER COMMITMENTS To meet the financing needs of our customers, we may enter into commitments to purchase debt and equity securities to provide capital for their funding, liquidity or other future needs. As of March 31, 2019 , a nd December 31, 2018 , we had commitments to purchase debt securities of $224 million and $335 million , respectively, and commitments to purchase equity securities of $2.5 billion for both periods. As part of maintaining our memberships in certain clearing organizations, we are required to stand ready to provide liquidity to sustain market clearing activity in the event unforeseen events occur or are deemed likely to occur. Certain of these obligations are guarantees of other members’ performance and accordingly are included in Other guarantees in Table 13.1. Also, we have commitments to purchase securities under resale agreements from central clearing organizations. We do not have any outstanding amounts funded, and the amount of our unfunded contractual commitments was $9.7 billion and $9.8 billion as of March 31, 2019 , and December 31, 2018 , respectively. Given the nature of these commitments, they are excluded from Table 6.4 (Unfunded Credit Commitments) in Note 6 (Loans and Allowance for Credit Losses). The Parent fully and unconditionally guarantees the payment of principal, interest, and any other amounts that may be due on securities that its 100% owned finance subsidiary, Wells Fargo Finance LLC, may issue. These guaranteed liabilities were $229 million and $5 million at March 31, 2019 and December 31, 2018 , respectively. These guarantees rank on parity with all of the Parent’s other unsecured and unsubordinated indebtedness.

Legal Actions

Legal Actions	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Legal Actions	Note 14: Legal Actions Wells Fargo and certain of our subsidiaries are involved in a number of judicial, regulatory, governmental, arbitration, and other proceedings or investigations concerning matters arising from the conduct of our business activities, and many of those proceedings and investigations expose Wells Fargo to potential financial loss. These proceedings and investigations 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 that 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 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. AUTOMOBILE LENDING MATTERS On April 20, 2018, the Company entered into consent orders with the Office of the Comptroller of the Currency (OCC) and the Consumer Financial Protection Bureau (CFPB) to resolve, among other things, investigations by the agencies into the Company’s compliance risk management program and its past practices involving certain automobile collateral protection insurance (CPI) policies and, as discussed below, certain mortgage interest rate lock extensions. The consent orders require remediation to customers and the payment of a total of $1.0 billion in civil money penalties to the agencies. In July 2017, the Company announced a plan to remediate customers who may have been financially harmed due to issues related to automobile CPI policies purchased through a third-party vendor on their behalf. Multiple putative class action cases alleging, among other things, unfair and deceptive practices relating to these CPI policies, have been filed against the Company and consolidated into one multi-district litigation in the United States District Court for the Central District of California. The Company has reached an agreement in principle to resolve the multi-district litigation pursuant to which the Company has agreed to pay, consistent with its remediation obligations under the consent orders, approximately $415 million in remediation to customers with CPI policies placed between October 15, 2005, and September 30, 2016. The settlement amount is not incremental to the Company’s remediation obligations under the consent orders, but instead encompasses those obligations, including remediation payments to date. The settlement amount is subject to change as the Company finalizes its remediation activity under the consent orders. In addition, the Company has agreed to contribute $1 million to a common fund for the class. The district court has set a preliminary approval hearing for June 3, 2019. The $415 million amount of the agreement in principle was fully accrued as of March 31, 2019. A putative class of shareholders also filed a securities fraud class action against the Company and its executive officers alleging material misstatements and omissions of CPI-related information in the Company’s public disclosures. Former team members have also alleged retaliation for raising concerns regarding automobile lending practices. In addition, the Company has identified certain issues related to the unused portion of guaranteed automobile protection (GAP) waiver or insurance agreements between the customer and dealer and, by assignment, the lender, which will result in remediation to customers in certain states. The Company is subject to a class action lawsuit in the United States District Court for the Central District of California alleging that customers are entitled to refunds in all states. Allegations related to the CPI and GAP programs are among the subjects of shareholder derivative lawsuits pending in federal and state court in California. The court dismissed the state court action in September 2018, but plaintiffs filed an amended complaint in November 2018. Subject to court approval, the parties to the state court action have entered into an agreement to resolve the action pursuant to which the Company will pay plaintiffs’ attorneys’ fees and undertake certain business and governance practices. These and other issues related to the origination, servicing, and collection of consumer automobile loans, including related insurance products, have also subjected the Company to formal or informal inquiries, investigations, or examinations from federal and state government agencies. In December 2018, the Company entered into an agreement with all 50 state Attorneys General and the District of Columbia to resolve an investigation into the Company’s retail sales practices, CPI and GAP, and mortgage interest rate lock matters, pursuant to which the Company paid $575 million . CONSUMER DEPOSIT ACCOUNT RELATED REGULATORY INVESTIGATION The CFPB is conducting an investigation into whether customers were unduly harmed by the Company’s historical practices associated with 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. A former team member has brought a state court action alleging retaliation for raising concerns about these practices. FIDUCIARY AND CUSTODY ACCOUNT FEE CALCULATIONS Federal government agencies are conducting formal or informal inquiries, investigations, or examinations regarding fee calculations within certain fiduciary and custody accounts in the Company’s investment and fiduciary services business, which is part of the wealth management business within the Wealth and Investment Management (WIM) operating segment. The Company has determined that there have been instances of incorrect fees being applied to certain assets and accounts, resulting in both overcharges and undercharges to customers. FOREIGN EXCHANGE BUSINESS Federal government agencies, including the United States Department of Justice (Department of Justice), are investigating or examining certain activities in the Company’s foreign exchange business. The Company has begun providing remediation to customers that may have received pricing inconsistent with commitments made to those customers, and rebates to customers where historic pricing, while consistent with contracts entered into with those customers, does not conform to recently implemented pricing review standards for prior periods. 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 8 consecutive months. The district court granted final approval of the settlement, which was appealed to the United States Court of Appeals for the Second Circuit by settlement objector merchants. Other merchants opted out of the settlement and are pursuing several individual actions. On June 30, 2016, the Second Circuit 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. The parties have entered into a settlement agreement to resolve the money damages class claims pursuant to which defendants will pay a total of approximately $6.2 billion , which includes approximately $5.3 billion of funds remaining from the 2012 settlement and $900 million in additional funding. The Company’s allocated responsibility for the additional funding is approximately $94.5 million . The court granted preliminary approval of the settlement in January 2019, and scheduled a final approval hearing for November 7, 2019. Several of the opt-out and direct action 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 equitable relief class case. LOW INCOME HOUSING TAX CREDITS Federal government agencies have undertaken formal or informal inquiries or investigations regarding the manner in which the Company purchased, and negotiated the purchase of, certain federal low income housing tax credits in connection with the financing of low income housing developments. MORTGAGE BANKRUPTCY LOAN MODIFICATION LITIGATION Plaintiffs, representing a putative class of mortgage borrowers who were debtors in Chapter 13 bankruptcy cases, filed a putative class action, Cotton, et al. v. Wells Fargo, et al. , against Wells Fargo & Company and Wells Fargo Bank, N.A. in the United States Bankruptcy Court for the Western District of North Carolina on June 7, 2017. Plaintiffs allege that Wells Fargo improperly and unilaterally modified the mortgages of borrowers who were debtors in Chapter 13 bankruptcy cases. Plaintiffs allege that Wells Fargo implemented these modifications by improperly filing mortgage payment change notices in Chapter 13 bankruptcy cases, in violation of bankruptcy rules and process. The amended complaint asserts claims based on, among other things, alleged fraud, violations of bankruptcy rules and laws, and unfair and deceptive trade practices. The amended complaint seeks monetary damages, attorneys’ fees, and declaratory and injunctive relief. The parties have entered into a settlement agreement pursuant to which the Company will pay $13.5 million to resolve the claims. The court granted final approval of the settlement on March 15, 2019 . MORTGAGE INTEREST RATE LOCK MATTERS On April 20, 2018, the Company entered into consent orders with the OCC and CFPB to resolve, among other things, investigations by the agencies into the Company’s compliance risk management program and its past practices involving certain automobile CPI policies and certain mortgage interest rate lock extensions. The consent orders require remediation to customers and the payment of a total of $1.0 billion in civil money penalties to the agencies. The Company was named in a putative class action, filed in the United States District Court for the Northern District of California, alleging violations of federal and state consumer fraud statutes relating to mortgage rate lock extension fees. The Company filed a motion to dismiss and the court granted the motion. Subsequently, a putative class action was filed in the United States District Court for the District of Oregon, raising similar allegations. The Company filed a motion to dismiss this action and the court granted the motion. In addition, former team members have asserted claims, including in pending litigation, that they were terminated for raising concerns regarding mortgage interest rate lock extension practices. Allegations related to mortgage interest rate lock extension fees are also among the subjects of two shareholder derivative lawsuits filed in California state court. Subject to court approval, the Company has entered into an agreement to resolve the derivative lawsuits pursuant to which the Company will pay plaintiffs’ attorneys’ fees and undertake certain business and governance practices. This matter has also subjected the Company to formal or informal inquiries, investigations or examinations from other federal and state government agencies. In December 2018, the Company entered into an agreement with all 50 state Attorneys General and the District of Columbia to resolve an investigation into the Company’s retail sales practices, CPI and GAP, and mortgage interest rate lock matters, pursuant to which the Company paid $575 million . MORTGAGE LOAN MODIFICATION LITIGATION Plaintiffs representing a putative class of mortgage borrowers have filed separate putative class actions, Hernandez v. Wells Fargo, et al ., and Coordes v. Wells Fargo, et al ., against Wells Fargo Bank, N.A. in the United States District Court for the Northern District of California and the United States District Court for the District of Washington, respectively. Plaintiffs allege that Wells Fargo improperly denied mortgage loan modifications or repayment plans to customers in the foreclosure process due to the overstatement of foreclosure attorneys’ fees that were included for purposes of determining whether a customer in the foreclosure process qualified for a mortgage loan modification or repayment plan. MORTGAGE-RELATED REGULATORY INVESTIGATIONS Federal and state government agencies, including the Department of Justice, have been investigating or examining certain mortgage related activities of Wells Fargo and predecessor institutions. Wells Fargo, for itself and for predecessor institutions, has responded, or 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. An agreement, pursuant to which the Company paid $2.09 billion , was reached in August 2018 to resolve the Department of Justice investigation, which related to certain 2005-2007 residential mortgage-backed securities activities. In addition, the Company reached an agreement with the Attorney General of the State of Illinois in November 2018 pursuant to which the Company paid $17 million in restitution to certain Illinois state pension funds to resolve a claim relating to certain residential mortgage-backed securities activities. 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 voluntary self-disclosures 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 (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 in October 2016, and Wells Fargo appealed this decision to the United States Court of Appeals for the Eleventh Circuit. In May 2018, the Eleventh Circuit ruled in Wells Fargo’s favor and found that Wells Fargo had not waived its arbitration rights and remanded the case to the district court for further proceedings. Plaintiffs filed a petition for rehearing to the Eleventh Circuit, which was denied in August 2018. Plaintiffs petitioned for certiorari from the United States Supreme Court, and that petition was denied in January 2019. The case has returned to the district court for further proceedings. RETAIL SALES PRACTICES MATTERS Federal, state, and local government agencies, including the Department of Justice, the United States Securities and Exchange Commission (SEC), and the United States Department of Labor; state attorneys general, including the New York Attorney General; and prosecutors’ offices, as well as Congressional committees, have undertaken formal or informal inquiries, investigations or examinations arising out of certain retail sales practices of the Company that were the subject of settlements with the CFPB, the OCC, and the Office of the Los Angeles City Attorney announced by the Company on September 8, 2016. These matters are at varying stages. The Company has responded, and continues to respond, to requests from a number of the foregoing. In October 2018, the Company entered into an agreement to resolve the New York Attorney General’s investigation pursuant to which the Company paid $65 million to the State of New York. In December 2018, the Company entered into an agreement with all 50 state Attorneys General and the District of Columbia to resolve an investigation into the Company’s retail sales practices, CPI and GAP, and mortgage interest rate lock matters, pursuant to which the Company paid $575 million . The Company has also engaged in preliminary and/or exploratory resolution discussions with the Department of Justice and the SEC, although there can be no assurance as to the outcome of these discussions. In addition, a number of lawsuits have also been filed by non-governmental parties seeking damages or other remedies related to these retail 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, the Company 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. In addition, in the unlikely event that the number of unauthorized accounts identified by settlement class members in the claims process and not disputed by the claims administrator exceeds plaintiffs’ 3.5 million account estimate, the Company will proportionately increase the $25 million reserve so that the ratio of reserve to unauthorized accounts is no less than what was implied by plaintiffs’ estimate at the time of the district court’s preliminary approval of the settlement in July 2017. The district court issued an order granting final approval of the settlement on June 14, 2018. Several appeals of the district court’s order granting final approval of the settlement have been filed with the United States Court of Appeals for the Ninth Circuit. Second, Wells Fargo shareholders brought 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. The Company entered into a settlement agreement to resolve this matter pursuant to which the Company paid $480 million . The district court issued an order granting final approval of the settlement on December 20, 2018. 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 involvement with and failure to detect and prevent sales practices issues. These actions are currently pending in the United States District Court for the Northern District of California and California state court for coordinated proceedings. An additional lawsuit asserting similar claims pending in Delaware state court has been stayed. Subject to court approval, the parties have entered into settlement agreements to resolve the shareholder derivative lawsuits pursuant to which insurance carriers will pay the Company approximately $240 million for alleged damage to the Company, and the Company will pay plaintiffs’ attorneys’ fees. Fourth, multiple employment litigation matters have been brought against Wells Fargo, including an Employee Retirement Income Security Act (ERISA) class action in the United States District Court for the District of Minnesota on behalf of 401(k) plan participants that has been dismissed and is now on appeal; a class action in the United States District Court for the Northern District of California on behalf of team members who allege that they protested sales practice misconduct and/or were terminated for not meeting sales goals that has now been dismissed, and we have entered into a framework with plaintiffs’ counsel to address individual claims that have been asserted; various wage and hour class actions brought in federal and state court in California (which have been settled), New Jersey, and Pennsylvania on behalf of non-exempt branch based team members alleging that sales pressure resulted in uncompensated overtime; and multiple single plaintiff Sarbanes-Oxley Act complaints and state law whistleblower actions filed with the United States Department of Labor or in various state courts alleging adverse employment actions for raising sales practice misconduct issues. RMBS TRUSTEE LITIGATION In November 2014, a group of institutional investors (Institutional Investor Plaintiffs), including funds affiliated with BlackRock, Inc., 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 Company in its capacity as trustee for a number of residential mortgage-backed securities (RMBS) trusts (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 (Related Federal Cases), and the various cases pending against the Company are proceeding before the same judge. On January 19, 2016, the Southern District of New York entered an order in connection with the Federal Court Complaint dismissing claims related to certain of the trusts at issue (Dismissed Trusts). The Company’s motion to dismiss the Federal Court Complaint and the complaints for the Related Federal Cases 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 (Third-Party Claims). The investment advisors have moved to dismiss those complaints. On April 17, 2018, the Southern District of New York denied class certification in the Related Federal Case brought by Royal Park Investments SA/NV (Royal Park Action). A complaint raising similar allegations to those in the Federal Court Complaint was filed in May 2016 in New York state court by a different plaintiff investor. 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 (State Court Action). 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 (Declaratory Judgment Action). The complaint seeks, among other relief, declarations that the Company 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. In November 2017, the Company’s motion to dismiss the complaint was granted. Plaintiffs filed a notice of appeal in January 2018. In November 2018, the Institutional Investor Plaintiffs and the Company entered into a settlement agreement pursuant to which, among other terms, the Company will pay $43 million to resolve the Federal Court Complaint and the State Court Action. The settlement will also resolve the Third Party Claims and the Declaratory Judgment Action. The New York state court has scheduled a fairness hearing on the settlement for May 6, 2019. In addition, Royal Park Investments SA/NV and the Company have reached an agreement resolving the Royal Park Action. Other than the Royal Park Action, the Related Federal Cases are not covered by these settlement agreements. SEMINOLE TRIBE TRUSTEE LITIGATION The Seminole Tribe of Florida filed a complaint in Florida state court alleging that Wells Fargo, as trustee, charged excess fees in connection with the administration of a minor’s trust and failed to invest the assets of the trust prudently. The complaint was later amended to include three individual current and former beneficiaries as plaintiffs and to remove the Tribe as a party to the case. In December 2016, the Company filed a motion to dismiss the amended complaint on the grounds that the Tribe is a necessary party and that the individual beneficiaries lack standing to bring claims. The motion was denied in June 2018. Trial is scheduled for October 2019. WHOLESALE BANKING CONSENT ORDER INVESTIGATION On November 19, 2015, the Company entered into a consent order with the OCC, pursuant to which the Wholesale Banking group was required to implement customer due diligence standards that include collection of current beneficial ownership information for certain business customers. The Company is responding to inquiries from various federal government agencies regarding potentially inappropriate conduct in connection with the collection of beneficial ownership information. 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 $3.1 billion as of March 31, 2019 . The increase in the high end of the range from December 31, 2018, was due to a variety of matters. 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 the retail 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

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Note 15: 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 17 (Derivatives) to Financial Statements in our 2018 Form 10-K. Table 15.1 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 15.1: Notional or Contractual Amounts and Fair Values of Derivatives March 31, 2019 December 31, 2018 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 $ 187,889 2,195 810 177,511 2,237 636 Foreign exchange contracts (1) 33,647 474 1,575 34,176 573 1,376 Total derivatives designated as qualifying hedging instruments 2,669 2,385 2,810 2,012 Derivatives not designated as hedging instruments Economic hedges: Interest rate contracts (2) 216,847 905 495 173,215 849 369 Equity contracts 16,267 1,106 450 13,920 1,362 79 Foreign exchange contracts 16,590 154 92 19,521 225 80 Credit contracts – protection purchased 200 42 — 100 27 — Subtotal 2,207 1,037 2,463 528 Customer accommodation trading and other derivatives: Interest rate contracts 10,242,378 17,349 15,957 9,162,821 15,349 15,303 Commodity contracts 62,763 1,528 1,160 66,173 1,588 2,336 Equity contracts 227,993 5,662 7,510 217,890 6,183 5,931 Foreign exchange contracts 331,020 5,272 5,045 364,982 5,916 5,657 Credit contracts – protection sold 13,426 135 125 11,741 76 182 Credit contracts – protection purchased 22,440 127 198 20,880 175 98 Subtotal 30,073 29,995 29,287 29,507 Total derivatives not designated as hedging instruments 32,280 31,032 31,750 30,035 Total derivatives before netting 34,949 33,417 34,560 32,047 Netting (3) (23,711 ) (26,024 ) (23,790 ) (23,548 ) Total $ 11,238 7,393 10,770 8,499 (1) The notional amount for foreign exchange contracts at March 31, 2019 , and December 31, 2018 , excludes $11.0 billion and $11.2 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, MLHFS, 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 15.2 for further information. Table 15.2 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 $31.6 billion and $30.5 billion of gross derivative assets and liabilities, respectively, at March 31, 2019 , and $30.9 billion and $28.4 billion , respectively, at December 31, 2018 , 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 $3.3 billion and $2.9 billion , respectively, at March 31, 2019 , and $3.7 billion and $3.6 billion , respectively, at December 31, 2018 , 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 15.2 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 13 (Guarantees, Pledged Assets and Collateral, and Other Commitments). Table 15.2: Gross Fair Values of Derivative Assets and Liabilities (in millions) Gross amounts recognized Gross amounts offset in consolidated balance sheet (1) Net amounts in consolidated balance sheet Gross amounts not offset in consolidated balance sheet (Disclosure-only netting) (2) Net amounts Percent exchanged in over-the-counter market (3) March 31, 2019 Derivative assets Interest rate contracts $ 20,449 (13,354 ) 7,095 (123 ) 6,972 90 % Commodity contracts 1,528 (846 ) 682 — 682 80 Equity contracts 6,768 (4,617 ) 2,151 (65 ) 2,086 71 Foreign exchange contracts 5,900 (4,642 ) 1,258 (17 ) 1,241 100 Credit contracts – protection sold 135 (133 ) 2 — 2 8 Credit contracts – protection purchased 169 (119 ) 50 (1 ) 49 82 Total derivative assets $ 34,949 (23,711 ) 11,238 (206 ) 11,032 Derivative liabilities Interest rate contracts $ 17,262 (14,761 ) 2,501 (576 ) 1,925 92 % Commodity contracts 1,160 (663 ) 497 (2 ) 495 72 Equity contracts 7,960 (5,154 ) 2,806 (120 ) 2,686 83 Foreign exchange contracts 6,712 (5,135 ) 1,577 (174 ) 1,403 100 Credit contracts – protection sold 125 (123 ) 2 (2 ) — 71 Credit contracts – protection purchased 198 (188 ) 10 — 10 8 Total derivative liabilities $ 33,417 (26,024 ) 7,393 (874 ) 6,519 December 31, 2018 Derivative assets Interest rate contracts $ 18,435 (12,029 ) 6,406 (80 ) 6,326 90 % Commodity contracts 1,588 (849 ) 739 (4 ) 735 57 Equity contracts 7,545 (5,318 ) 2,227 (755 ) 1,472 78 Foreign exchange contracts 6,714 (5,355 ) 1,359 (35 ) 1,324 100 Credit contracts – protection sold 76 (73 ) 3 — 3 12 Credit contracts – protection purchased 202 (166 ) 36 (1 ) 35 78 Total derivative assets $ 34,560 (23,790 ) 10,770 (875 ) 9,895 Derivative liabilities Interest rate contracts $ 16,308 (13,152 ) 3,156 (567 ) 2,589 92 % Commodity contracts 2,336 (727 ) 1,609 (8 ) 1,601 85 Equity contracts 6,010 (3,877 ) 2,133 (110 ) 2,023 75 Foreign exchange contracts 7,113 (5,522 ) 1,591 (188 ) 1,403 100 Credit contracts – protection sold 182 (180 ) 2 (2 ) — 67 Credit contracts – protection purchased 98 (90 ) 8 — 8 11 Total derivative liabilities $ 32,047 (23,548 ) 8,499 (875 ) 7,624 (1) Represents amounts with counterparties subject to enforceable master netting arrangements that have been offset in the consolidated balance sheet, including related cash collateral and portfolio level counterparty valuation adjustments. Counterparty valuation adjustments were $290 million and $353 million related to derivative assets and $104 million and $152 million related to derivative liabilities at March 31, 2019 , and December 31, 2018 , respectively. Cash collateral totaled $2.7 billion and $5.2 billion , netted against derivative assets and liabilities, respectively, at March 31, 2019 , and $3.7 billion and $3.6 billion , respectively, at December 31, 2018 . (2) Represents the fair value of non-cash collateral pledged and received against derivative assets and liabilities with the same counterparty that are subject to enforceable master netting arrangements. U.S. GAAP does not permit netting of such non-cash collateral balances in the consolidated balance sheet but requires disclosure of these amounts. (3) Over-the-counter percentages are calculated based on gross amounts recognized as of the respective balance sheet date. Fair Value and Cash Flow Hedges For fair value hedges, we use interest rate swaps to convert certain of our fixed-rate long-term debt and time certificates of deposit to floating rates to hedge our exposure to interest rate risk. We also enter into cross-currency swaps, cross-currency interest rate swaps and forward contracts to hedge our exposure to foreign currency risk and interest rate risk associated with the issuance of non-U.S. dollar denominated long-term debt. In addition, we use interest rate swaps, cross-currency swaps, cross-currency interest rate swaps and forward contracts to hedge against changes in fair value of certain investments in available-for-sale debt securities due to changes in interest rates, foreign currency rates, or both. We also use interest rate swaps to hedge against changes in fair value for certain mortgage loans held for sale. For cash flow hedges, we use interest rate swaps to hedge the variability in interest payments received on certain floating-rate commercial loans and paid on certain floating-rate debt due to changes in the contractually specified interest rate. We estimate $276 million pre-tax of deferred net losses related to cash flow hedges in OCI at March 31, 2019 , will be reclassified into net interest income during the next twelve months. The deferred losses expected to be reclassified into net interest income are predominantly related to discontinued hedges of floating rate loans. For cash flow hedges as of March 31, 2019 , we are hedging the variability of future cash flows for a maximum of 8 years . For more information on our accounting hedges, see Note 1 (Summary of Significant Accounting Policies) and Note 16 (Derivatives) to Financial Statements in our 2018 Form 10-K. Table 15.3 shows the net gains (losses) related to derivatives in fair value and cash flow hedging relationships. Table 15.3: Gains (Losses) Recognized in Consolidated Statement of Income on Fair Value and Cash Flow Hedging Relationships Net interest income Noninterest income (in millions) Debt securities Loans Mortgage loans held for sale Deposits Long-term debt Other Total Quarter ended March 31, 2019 Total amounts presented in the consolidated statement of income $ 3,941 11,354 152 (2,026 ) (1,927 ) 574 12,068 Gains (losses) on fair value hedging relationships Interest contracts Amounts related to interest settlements on derivatives (1) 16 — — (23 ) (7 ) — (14 ) Recognized on derivatives (814 ) — (8 ) 207 1,986 — 1,371 Recognized on hedged items 817 — 7 (190 ) (1,947 ) — (1,313 ) Foreign exchange contracts Amounts related to interest settlements on derivatives (1)(2) 10 — — — (142 ) — (132 ) Recognized on derivatives (3) (4 ) — — — 292 (402 ) (114 ) Recognized on hedged items 5 — — — (266 ) 391 130 Net income (expense) recognized on fair value hedges 30 — (1 ) (6 ) (84 ) (11 ) (72 ) Gains (losses) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — (78 ) — — — — (78 ) Foreign exchange contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — — — — (1 ) — (1 ) Net income (expense) recognized on cash flow hedges $ — (78 ) — — (1 ) — (79 ) (continued on following page) (continued from previous page) Net interest income Noninterest income (in millions) Debt securities Loans Mortgage loans held for sale Deposits Long-term debt Other Total Quarter ended March 31, 2018 Total amounts presented in the consolidated statement of income $ 3,414 10,579 179 (1,090 ) (1,576 ) 602 12,108 Gains (losses) on fair value hedging relationships Interest contracts Amounts related to interest settlements on derivatives (1) (82 ) — (1 ) (5 ) 171 — 83 Recognized on derivatives 950 1 6 (149 ) (2,393 ) — (1,585 ) Recognized on hedged items (968 ) (1 ) (8 ) 141 2,334 — 1,498 Foreign exchange contracts Amounts related to interest settlements on derivatives (1)(2) 5 — — — (80 ) — (75 ) Recognized on derivatives (3) 4 — — — (171 ) 660 493 Recognized on hedged items (3 ) — — — 109 (627 ) (521 ) Net income (expense) recognized on fair value hedges (94 ) — (3 ) (13 ) (30 ) 33 (107 ) Gains (losses) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — (60 ) — — — — (60 ) Foreign exchange contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — — — — — — — Net income (expense) recognized on cash flow hedges $ — (60 ) — — — — (60 ) (1) Includes changes in fair value due to the passage of time associated with the non-zero fair value amount at hedge inception. (2) Includes $7 million and $0 million for first quarter 2019 and 2018 , respectively, of the time value component recognized as net interest income (expense) on forward derivatives hedging foreign currency debt securities and long-term debt that were excluded from the assessment of hedge effectiveness. (3) For certain fair value hedges of foreign currency risk, changes in fair value of cross-currency swaps attributable to changes in cross-currency basis spreads are excluded from the assessment of hedge effectiveness and recorded in other comprehensive income. See Note 21 (Other Comprehensive Income) for the amounts recognized in other comprehensive income. (4) See Note 21 (Other Comprehensive Income) for details of amounts reclassified to net income. Table 15.4 shows the carrying amount and associated cumulative basis adjustment related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships. Table 15.4: Hedged Items in Fair Value Hedging Relationship Hedged Items Currently Designated Hedged Items No Longer Designated (1) (in millions) Carrying Amount of Assets/(Liabilities) (2)(4) Hedge Accounting Basis Adjustment Assets/(Liabilities) (3) Carrying Amount of Assets/(Liabilities) (4) Hedge Accounting Basis Adjustment March 31, 2019 Available-for-sale debt securities (5) $ 40,081 256 4,596 110 Loans — — — — Mortgage loans held for sale 316 4 228 2 Deposits (59,921 ) (82 ) — — Long-term debt (111,404 ) (2,935 ) (25,588 ) 319 December 31, 2018 Available-for-sale debt securities (5) 37,857 (157 ) 4,938 238 Loans — — — — Mortgage loans held for sale 448 7 — — Deposits (56,535 ) 115 — — Long-term debt (104,341 ) (742 ) (25,539 ) 366 (1) Represents hedged items no longer designated in qualifying fair value hedging relationships for which an associated basis adjustment exists at the balance sheet date. (2) Does not include the carrying amount of hedged items where only foreign currency risk is the designated hedged risk. The carrying amount excluded $1.6 billion for debt securities and $(6.2) billion for long-term debt as of March 31, 2019, and $1.6 billion for debt securities and $(6.3) billion for long-term debt as of December 31, 2018. (3) The balance includes $1.0 billion and $77 million of debt securities and long-term debt cumulative basis adjustments, respectively, as of March 31, 2019, and $1.4 billion and $66 million of debt securities and long-term debt cumulative basis adjustments,respectively, as of December 31, 2018, on terminated hedges whereby the hedged items have subsequently been re-designated into existing hedges. (4) Represents the full carrying amount of the hedged asset or liability item as of the balance sheet date, except for circumstances in which only a portion of the asset or liability was designated as the hedged item in which case only the portion designated is presented. (5) Carrying amount represents the amortized cost. Derivatives Not Designated as Hedging Instruments We use economic hedge derivatives to hedge the risk of changes in the fair value of certain residential MLHFS, 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 mismatches between the changes in fair value of the hedged item and hedging instrument 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 $962 million in first quarter 2019, and $(1.2) billion in first quarter 2018 , which are included in mortgage banking noninterest income. The aggregate fair value of these derivatives was a net asset of $663 million at March 31, 2019 , and net asset of $757 million at December 31, 2018 . 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. Loan 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 positive fair value of $58 million and a net positive fair value of $60 million at March 31, 2019 , and December 31, 2018 , respectively, and is included in the caption “Interest rate contracts” under “Customer accommodation trading and other derivatives” in Table 15.1 in this Note. For more information on economic hedges and other derivatives, see Note 16 (Derivatives) to Financial Statements in our 2018 Form 10-K. Table 15.5 shows the net gains (losses) recognized by income statement lines, related to derivatives not designated as hedging instruments. Table 15.5: Gains (Losses) on Derivatives Not Designated as Hedging Instruments Noninterest income (in millions) Mortgage banking Net gains (losses) from equity securities Net gains (losses) from trading activities Other Total Quarter ended March 31, 2019 Net gains (losses) recognized on economic hedges derivatives: Interest contracts (1) $ 811 — — 5 816 Equity contracts — (885 ) — 7 (878 ) Foreign exchange contracts — — — (24 ) (24 ) Credit contracts — — — 15 15 Subtotal (2) 811 (885 ) — 3 (71 ) Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest contracts (3) 118 — (284 ) — (166 ) Commodity contracts — — 51 — 51 Equity contracts — — (2,149 ) (273 ) (2,422 ) Foreign exchange contracts — — 14 — 14 Credit contracts — — (44 ) — (44 ) Subtotal 118 — (2,412 ) (273 ) (2,567 ) Net gains (losses) recognized related to derivatives not designated as hedging instruments $ 929 (885 ) (2,412 ) (270 ) (2,638 ) (continued on following page) (continued from previous page) Noninterest income (in millions) Mortgage banking Net gains (losses) from equity securities Net gains (losses) from trading activities Other Total Quarter ended March 31, 2018 Net gains (losses) recognized on economic hedges derivatives: Interest contracts (1) $ (595 ) — — 9 (586 ) Equity contracts — (58 ) — — (58 ) Foreign exchange contracts — — — (159 ) (159 ) Credit contracts — — — 4 4 Subtotal (2) (595 ) (58 ) — (146 ) (799 ) Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest contracts (3) (259 ) — 385 — 126 Commodity contracts — — 39 — 39 Equity contracts — — 459 (195 ) 264 Foreign exchange contracts — — 310 — 310 Credit contracts — — 10 — 10 Subtotal (259 ) — 1,203 (195 ) 749 Net gains (losses) recognized related to derivatives not designated as hedging instruments $ (854 ) (58 ) 1,203 (341 ) (50 ) (1) Mortgage banking amounts for first quarter 2019 are comprised of gains of $962 million related to derivatives used as economic hedges of MSRs measured at fair value offset by losses of $(151) million related to derivatives used as economic hedges of mortgage loans held for sale and derivative loan commitments. The corresponding amounts for first quarter 2018 are comprised of losses of $(1.2) billion offset by gains of $625 million , respectively. (2) Includes hedging gains (losses) of $(18) million and $28 million for first quarter 2019 and 2018, respectively, which partially offset hedge accounting ineffectiveness. (3) Amounts presented in mortgage banking noninterest income are gains on derivative loan commitments. 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 15.6 provides details of sold and purchased credit derivatives. Table 15.6: Sold and Purchased Credit Derivatives Notional amount (in millions) Fair value liability Protection sold (A) Protection sold – non- investment grade Protection purchased with identical underlyings (B) Net protection sold (A) - (B) Other protection purchased Range of maturities March 31, 2019 Credit default swaps on: Corporate bonds $ 36 2,010 483 1,332 678 1,843 2019 - 2027 Structured products 37 102 97 90 12 113 2022 - 2047 Credit protection on: Default swap index — 4,916 585 2,773 2,143 3,690 2019 - 2028 Commercial mortgage-backed securities index 42 352 97 326 26 50 2047 - 2058 Asset-backed securities index 8 42 42 42 — 1 2045 - 2046 Other 2 6,004 5,809 — 6,004 12,380 2019 - 2048 Total credit derivatives $ 125 13,426 7,113 4,563 8,863 18,077 December 31, 2018 Credit default swaps on: Corporate bonds $ 59 2,037 441 1,374 663 1,460 2019 - 2027 Structured products 62 133 128 121 12 113 2022 - 2047 Credit protection on: Default swap index 1 3,618 582 1,998 1,620 2,896 2019 - 2028 Commercial mortgage-backed securities index 49 389 109 363 26 51 2047 - 2058 Asset-backed securities index 9 42 42 42 — 1 2045 - 2046 Other 2 5,522 5,327 — 5,522 12,561 2018 - 2048 Total credit derivatives $ 182 11,741 6,629 3,898 7,843 17,082 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 $8.7 billion at March 31, 2019 , and $7.4 billion at December 31, 2018 , for which we posted $7.2 billion and $5.6 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 March 31, 2019 , or December 31, 2018 , we would have been required to post additional collateral of $1.5 billion or $1.8 billion , respectively, or potentially settle the contract in an amount equal to its fair value. Some contracts require that we provide more collateral than the fair value of derivatives that are in a net liability position if a downgrade occurs. Counterparty Credit Risk By using derivatives, we are exposed to counterparty credit risk if counterparties to the derivative contracts do not perform as expected. If a counterparty fails to perform, our counterparty credit risk is equal to the amount reported as a derivative asset on our balance sheet. The amounts reported as a derivative asset are derivative contracts in a gain position, and to the extent subject to legally enforceable master netting arrangements, net of derivatives in a loss position with the same counterparty and cash collateral received. We minimize counterparty credit risk through credit approvals, limits, monitoring procedures, executing master netting arrangements and obtaining collateral, where appropriate. To the extent the master netting arrangements and other criteria meet the applicable requirements, including determining the legal enforceability of the arrangement, it is our policy to present derivative balances and related cash collateral amounts net on the balance sheet. We incorporate credit valuation adjustments (CVA) to reflect counterparty credit risk in determining the fair value of our derivatives. Such adjustments, which consider the effects of enforceable master netting agreements and collateral arrangements, reflect market-based views of the credit quality of each counterparty. Our CVA calculation is determined based on observed credit spreads in the credit default swap market and indices indicative of the credit quality of the counterparties to our derivatives.

Fair Values of Assets and Liabi

Fair Values of Assets and Liabilities	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Values of Assets and Liabilities	Note 16: 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 16.2 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, measurement alternative accounting for nonmarketable equity securities or write-downs of individual assets. Assets recorded on a nonrecurring basis are presented in Table 16.9 in this Note. See Note 1 (Summary of Significant Accounting Policies) to Financial Statements in our 2018 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 18 (Fair Values of Assets and Liabilities) to Financial Statements in our 2018 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. We do not classify an equity security 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 use NAV per share as the fair value measurement for certain nonmarketable equity fund investments. Marketable equity securities 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 18 (Fair Values of Assets and Liabilities) to Financial Statements in our 2018 Form 10-K. Table 16.1 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 16.1 . Table 16.1: Fair Value Measurements by Brokers or Third-Party Pricing Services Brokers Third-party pricing services (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 March 31, 2019 Trading debt securities $ — — — 485 310 — Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies — — — 12,144 2,962 — Securities of U.S. states and political subdivisions — — — — 49,230 43 Mortgage-backed securities — — — — 156,450 41 Other debt securities (1) — 45 130 — 44,292 771 Total available-for-sale debt securities — 45 130 12,144 252,934 855 Equity securities: Marketable — — — — 161 — Nonmarketable — — — — — — Total equity securities — — — — 161 — Derivative assets — — — 17 — — Derivative liabilities — — — (21 ) (1 ) — Other liabilities (2) — — — — — — December 31, 2018 Trading debt securities $ — — — 899 256 — Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies — — — 10,399 2,949 — Securities of U.S. states and political subdivisions — — — — 48,377 43 Mortgage-backed securities — — — — 160,162 41 Other debt securities (1) — 45 129 — 44,292 758 Total available-for-sale debt securities — 45 129 10,399 255,780 842 Equity securities: Marketable — — — — 158 — Nonmarketable — — — — 1 — Total equity securities — — — — 159 — Derivative assets — — — 17 — — Derivative liabilities — — — (12 ) — — 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 16.2 presents the balances of assets and liabilities recorded at fair value on a recurring basis. Table 16.2: Fair Value on a Recurring Basis (in millions) Level 1 Level 2 Level 3 Netting (1) Total March 31, 2019 Trading debt securities: Securities of U.S. Treasury and federal agencies $ 17,584 4,971 — — 22,555 Securities of U.S. states and political subdivisions — 3,385 — — 3,385 Collateralized loan obligations — 674 275 — 949 Corporate debt securities — 11,073 41 — 11,114 Mortgage-backed securities — 31,162 — — 31,162 Asset-backed securities — 1,187 — — 1,187 Other trading debt securities — 11 15 — 26 Total trading debt securities 17,584 52,463 331 — 70,378 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies 12,144 2,962 — — 15,106 Securities of U.S. states and political subdivisions — 49,230 470 — 49,700 Mortgage-backed securities: Federal agencies — 150,663 — — 150,663 Residential — 1,456 — — 1,456 Commercial — 4,331 41 — 4,372 Total mortgage-backed securities — 156,450 41 — 156,491 Corporate debt securities 36 5,941 377 — 6,354 Collateralized loan and other debt obligations (2) — 34,560 755 — 35,315 Asset-backed securities: Automobile loans and leases — 945 — — 945 Home equity loans — 14 — — 14 Other asset-backed securities — 3,811 362 — 4,173 Total asset-backed securities — 4,770 362 — 5,132 Other debt securities — 1 — — 1 Total available-for-sale debt securities 12,180 253,914 2,005 (3) — 268,099 Mortgage loans held for sale — 10,093 998 — 11,091 Loans held for sale — 927 71 — 998 Loans — — 225 — 225 Mortgage servicing rights (residential) — — 13,336 — 13,336 Derivative assets: Interest rate contracts 67 20,254 128 — 20,449 Commodity contracts — 1,503 25 — 1,528 Equity contracts 1,936 3,275 1,557 — 6,768 Foreign exchange contracts 17 5,872 11 — 5,900 Credit contracts — 216 88 — 304 Netting — — — (23,711 ) (23,711 ) Total derivative assets 2,020 31,120 1,809 (23,711 ) 11,238 Equity securities - excluding securities at NAV: Marketable 25,168 900 — — 26,068 Nonmarketable — 20 6,381 — 6,401 Total equity securities 25,168 920 6,381 — 32,469 Total assets included in the fair value hierarchy $ 56,952 349,437 25,156 (23,711 ) 407,834 Equity securities at NAV (4) 117 Total assets recorded at fair value 407,951 Derivative liabilities: Interest rate contracts $ (18 ) (17,217 ) (27 ) — (17,262 ) Commodity contracts — (1,117 ) (43 ) — (1,160 ) Equity contracts (1,382 ) (4,859 ) (1,719 ) — (7,960 ) Foreign exchange contracts (21 ) (6,664 ) (27 ) — (6,712 ) Credit contracts — (284 ) (39 ) — (323 ) Netting — — — 26,024 26,024 Total derivative liabilities (1,421 ) (30,141 ) (1,855 ) 26,024 (7,393 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (12,562 ) (219 ) — — (12,781 ) Mortgage-backed securities — (404 ) — — (404 ) Corporate debt securities — (5,075 ) — — (5,075 ) Equity securities (3,325 ) (1 ) — — (3,326 ) Other securities — — — — — Total short sale liabilities (15,887 ) (5,699 ) — — (21,586 ) Other liabilities — — (2 ) — (2 ) Total liabilities recorded at fair value $ (17,308 ) (35,840 ) (1,857 ) 26,024 (28,981 ) (1) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 15 (Derivatives) for additional information. (2) Includes collateralized debt obligations of $755 million . (3) A significant portion of the balance consists of securities that are 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. (4) Consists of certain nonmarketable equity securities 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 (1) Total December 31, 2018 Trading debt securities: Securities of U.S. Treasury and federal agencies $ 20,525 2,892 — — 23,417 Securities of U.S. states and political subdivisions — 3,272 3 — 3,275 Collateralized loan obligations — 673 237 — 910 Corporate debt securities — 10,723 34 — 10,757 Mortgage-backed securities — 30,715 — — 30,715 Asset-backed securities — 893 — — 893 Other trading debt securities — 6 16 — 22 Total trading debt securities 20,525 49,174 290 — 69,989 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies 10,399 2,949 — — 13,348 Securities of U.S. states and political subdivisions — 48,820 444 — 49,264 Mortgage-backed securities: Federal agencies — 153,203 — — 153,203 Residential — 2,775 — — 2,775 Commercial — 4,184 41 — 4,225 Total mortgage-backed securities — 160,162 41 — 160,203 Corporate debt securities 34 5,867 370 — 6,271 Collateralized loan and other debt obligations (2) — 34,543 800 — 35,343 Asset-backed securities: Automobile loans and leases — 925 — — 925 Home equity loans — 112 — — 112 Other asset-backed securities — 4,056 389 — 4,445 Total asset-backed securities — 5,093 389 — 5,482 Other debt securities — 1 — — 1 Total available-for-sale debt securities 10,433 257,435 2,044 (3) — 269,912 Mortgage loans held for sale — 10,774 997 — 11,771 Loans held for sale — 1,409 60 — 1,469 Loans — — 244 — 244 Mortgage servicing rights (residential) — — 14,649 — 14,649 Derivative assets: Interest rate contracts 46 18,294 95 — 18,435 Commodity contracts — 1,535 53 — 1,588 Equity contracts 1,648 4,582 1,315 — 7,545 Foreign exchange contracts 17 6,689 8 — 6,714 Credit contracts — 179 99 — 278 Netting — — — (23,790 ) (23,790 ) Total derivative assets 1,711 31,279 1,570 (23,790 ) 10,770 Equity securities - excluding securities at NAV: Marketable 23,205 757 — — 23,962 Nonmarketable — 24 5,468 — 5,492 Total equity securities 23,205 781 5,468 — 29,454 Total assets included in the fair value hierarchy $ 55,874 350,852 25,322 (23,790 ) 408,258 Equity securities at NAV (4) 102 Total assets recorded at fair value 408,360 Derivative liabilities: Interest rate contracts $ (21 ) (16,217 ) (70 ) — (16,308 ) Commodity contracts — (2,287 ) (49 ) — (2,336 ) Equity contracts (1,492 ) (3,186 ) (1,332 ) — (6,010 ) Foreign exchange contracts (12 ) (7,067 ) (34 ) — (7,113 ) Credit contracts — (216 ) (64 ) — (280 ) Netting — — — 23,548 23,548 Total derivative liabilities (1,525 ) (28,973 ) (1,549 ) 23,548 (8,499 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (11,850 ) (411 ) — — (12,261 ) Mortgage-backed securities — (47 ) — — (47 ) Corporate debt securities — (4,505 ) — — (4,505 ) Equity securities (2,902 ) (2 ) — — (2,904 ) Other securities — (3 ) — — (3 ) Total short sale liabilities (14,752 ) (4,968 ) — — (19,720 ) Other liabilities — — (2 ) — (2 ) Total liabilities recorded at fair value $ (16,277 ) (33,941 ) (1,551 ) 23,548 (28,221 ) (1) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 15 (Derivatives) for additional information. (2) Includes collateralized debt obligations of $800 million . (3) A significant portion of the balance consists of securities that are 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. (4) Consists of certain nonmarketable equity securities 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. The amounts reported as transfers represent the fair value as of the beginning of the quarter in which the transfer occurred. The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for first quarter 2019 , are presented in Table 16.3 . Table 16.3: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Quarter ended March 31, 2019 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 (4) (in millions) Balance, beginning of period Net income Other compre- hensive income Transfers into Level 3 (2) Transfers out of Level 3 (3) Balance, end of period Quarter ended March 31, 2019 Trading debt securities: Securities of U.S. states and political subdivisions $ 3 — — (2 ) — (1 ) — — Collateralized loan obligations 237 (3 ) — 41 — — 275 1 Corporate debt securities 34 2 — 4 1 — 41 2 Other trading debt securities 16 (1 ) — — — — 15 — Total trading debt securities 290 (2 ) — 43 1 (1 ) 331 3 (5) Available-for-sale debt securities: Securities of U.S. states and political subdivisions 444 — 3 23 — — 470 — Mortgage-backed securities: Residential — — — — — — — — Commercial 41 — — — — — 41 — Total mortgage-backed securities 41 — — — — — 41 — Corporate debt securities 370 1 4 2 — — 377 — Collateralized loan and other debt obligations 800 6 (4 ) (47 ) — — 755 — Asset-backed securities: Other asset-backed securities 389 — (1 ) (26 ) — — 362 — Total asset-backed securities 389 — (1 ) (26 ) — — 362 — Total available-for-sale debt securities 2,044 7 2 (48 ) — — 2,005 — (6) Mortgage loans held for sale 997 15 — (66 ) 56 (4 ) 998 15 (7) Loans held for sale 60 — — 11 37 (37 ) 71 — Loans 244 — — (19 ) — — 225 (2 ) (7) Mortgage servicing rights (residential) (8) 14,649 (1,373 ) — 60 — — 13,336 (891 ) (7) Net derivative assets and liabilities: Interest rate contracts 25 187 — (111 ) — — 101 132 Commodity contracts 4 (51 ) — 27 2 — (18 ) (15 ) Equity contracts (17 ) (119 ) — (3 ) 9 (32 ) (162 ) (114 ) Foreign exchange contracts (26 ) 7 — 3 — — (16 ) 11 Credit contracts 35 8 — 6 — — 49 13 Total derivative contracts 21 32 — (78 ) 11 (32 ) (46 ) 27 (9) Equity securities: Nonmarketable 5,468 926 — (1 ) — (12 ) 6,381 926 Total equity securities 5,468 926 — (1 ) — (12 ) 6,381 926 (10) Other liabilities (2 ) — — — — — (2 ) — (7) (1) See Table 16.4 for detail. (2) All assets and liabilities transferred into level 3 were previously classified within level 2. (3) All assets and liabilities transferred out of level 3 are classified as level 2. (4) 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. (5) Included in net gains (losses) from trading activities in the income statement. (6) Included in net gains (losses) on debt securities in the income statement. (7) Included in mortgage banking and other noninterest income in the income statement. (8) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities). (9) Included in mortgage banking, trading activities, equity securities and other noninterest income in the income statement. (10) Included in net gains (losses) from equity securities in the income statement. (continued on following page) (continued from previous page) Table 16.4 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 first quarter 2019 . Table 16.4: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2019 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2019 Trading debt securities: Securities of U.S. states and political subdivisions $ — — — (2 ) (2 ) Collateralized loan obligations 130 (87 ) — (2 ) 41 Corporate debt securities 5 (1 ) — — 4 Other trading debt securities — — — — — Total trading debt securities 135 (88 ) — (4 ) 43 Available-for-sale debt securities: Securities of U.S. states and political subdivisions — — 49 (26 ) 23 Mortgage-backed securities: Residential — — — — — Commercial — — — — — Total mortgage-backed securities — — — — — Corporate debt securities 3 — — (1 ) 2 Collateralized loan and other debt obligations — — — (47 ) (47 ) Asset-backed securities: Other asset-backed securities — (3 ) 66 (89 ) (26 ) Total asset-backed securities — (3 ) 66 (89 ) (26 ) Total available-for-sale debt securities 3 (3 ) 115 (163 ) (48 ) Mortgage loans held for sale 16 (93 ) 46 (35 ) (66 ) Loans held for sale 12 (1 ) — — 11 Loans 2 — 3 (24 ) (19 ) Mortgage servicing rights (residential) (1) — (281 ) 341 — 60 Net derivative assets and liabilities: Interest rate contracts — — — (111 ) (111 ) Commodity contracts — — — 27 27 Equity contracts — — — (3 ) (3 ) Foreign exchange contracts — — — 3 3 Credit contracts 6 — — — 6 Total derivative contracts 6 — — (84 ) (78 ) Equity securities: Nonmarketable — (1 ) — — (1 ) Total equity securities — (1 ) — — (1 ) Other liabilities — — — — — (1) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities). The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for first quarter 2018 , are presented in Table 16.5 . Table 16.5: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – March 31, 2018 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 (2) Transfers out of Level 3 (3) Balance, end of period (4) Quarter ended March 31, 2018 Trading debt securities: Securities of U.S. states and $ 3 — — — — — 3 — Collateralized loan obligations 354 2 — (40 ) — — 316 16 Corporate debt securities 31 — — 3 — — 34 — Other trading debt securities 19 (1 ) — — — — 18 — Total trading debt securities 407 1 — (37 ) — — 371 16 (5) Available-for-sale debt securities: Securities of U.S. states and political subdivisions 925 4 (2 ) (41 ) — (269 ) 617 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 75 1 (1 ) (8 ) — — 67 — Total mortgage-backed securities 76 1 (1 ) (8 ) — — 68 — Corporate debt securities 407 1 3 (1 ) — — 410 — Collateralized loan and other debt obligations 1,020 5 43 (23 ) — — 1,045 — Asset-backed securities: Other asset-backed securities 566 8 (7 ) (66 ) — — 501 — Total asset-backed securities 566 8 (7 ) (66 ) — — 501 — Total available-for-sale debt securities 2,994 19 36 (139 ) — (269 ) 2,641 — (6) Mortgage loans held for sale 998 (23 ) — (37 ) 15 (3 ) 950 (23 ) (7) Loans held for sale 14 2 — (16 ) — — — — Loans 376 (1 ) — (23 ) — — 352 (4 ) (7) Mortgage servicing rights (residential) (8) 13,625 847 — 569 — — 15,041 1,330 (7) Net derivative assets and liabilities: Interest rate contracts 71 (345 ) — 266 — — (8 ) (73 ) Commodity contracts 19 15 — (24 ) — — 10 — Equity contracts (511 ) 69 — 71 — 49 (322 ) 25 Foreign exchange contracts 7 (7 ) — 1 — — 1 (3 ) Credit contracts 36 8 — (3 ) — — 41 4 Total derivative contracts (378 ) (260 ) — 311 — 49 (278 ) (47 ) (9) Equity securities: Nonmarketable 5,203 108 — (96 ) 4 — 5,219 101 Total equity securities 5,203 108 — (96 ) 4 — 5,219 101 (10) Other liabilities (3 ) 1 — — — — (2 ) — (7) (1) See Table 16.6 for detail. (2) All assets and liabilities transferred into level 3 were previously classified within level 2. (3) All assets and liabilities transferred out of level 3 are classified as level 2. (4) 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. (5) Included in net gains (losses) from trading activities in the income statement. (6) Included in net gains (losses) on debt securities in the income statement. (7) Included in mortgage banking and other noninterest income in the income statement. (8) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities). (9) Included in mortgage banking, trading activities, equity securities and other noninterest income in the income statement. (10) Included in net gains (losses) from equity securities in the income statement. (continued on following page) (continued from previous page) Table 16.6 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 first quarter 2018 . Table 16.6: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2018 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2018 Trading debt securities: Securities of U.S. states and political subdivisions $ — — — — — Collateralized loan obligations 182 (191 ) — (31 ) (40 ) Corporate debt securities 4 (1 ) — — 3 Other trading debt securities — — — — — Total trading debt securities 186 (192 ) — (31 ) (37 ) Available-for-sale debt securities: Securities of U.S. states and political subdivisions — (4 ) 10 (47 ) (41 ) Mortgage-backed securities: Residential — — — — — Commercial — — — (8 ) (8 ) Total mortgage-backed securities — — — (8 ) (8 ) Corporate debt securities — — — (1 ) (1 ) Collateralized loan and other debt obligations — — — (23 ) (23 ) Asset-backed securities: Other asset-backed securities — (8 ) 49 (107 ) (66 ) Total asset-backed securities — (8 ) 49 (107 ) (66 ) Total available-for-sale debt securities — (12 ) 59 (186 ) (139 ) Mortgage loans held for sale 27 (83 ) 58 (39 ) (37 ) Loans held for sale — (16 ) — — (16 ) Loans 1 — 4 (28 ) (23 ) Mortgage servicing rights (residential) (1) — (4 ) 573 — 569 Net derivative assets and liabilities: Interest rate contracts — — — 266 266 Commodity contracts — — — (24 ) (24 ) Equity contracts — — — 71 71 Foreign exchange contracts — — — 1 1 Credit contracts 3 (2 ) — (4 ) (3 ) Total derivative contracts 3 (2 ) — 310 311 Equity securities: Nonmarketable — (17 ) — (79 ) (96 ) Total equity securities — (17 ) — (79 ) (96 ) Other liabilities — — — — — (1) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities). Table 16.7 and Table 16.8 provide quantitative information about the valuation techniques and significant unobservable inputs used in the valuation of substantially all of our Level 3 assets and liabilities measured at fair value on a recurring basis for which we use an internal model. The significant unobservable inputs for Level 3 assets and liabilities that are valued using fair values obtained from third party vendors are not included in the table, as the specific inputs applied are not provided by the vendor. In addition, the table excludes the valuation techniques and significant unobservable inputs for certain classes of Level 3 assets and liabilities measured using an internal model that we consider, both individually and in the aggregate, insignificant relative to our overall Level 3 assets and liabilities. We made this determination based upon an evaluation of each class, which considered the magnitude of the positions, nature of the unobservable inputs and potential for significant changes in fair value due to changes in those inputs. For information on how changes in significant unobservable inputs affect the fair values of Level 3 assets and liabilities, see Note 18 (Fair Values of Assets and Liabilities) to Financial Statements in our 2018 Form 10-K. Table 16.7: Valuation Techniques – Recurring Basis – Marc h 31, 2019 ($ in millions, except cost to service amounts) Fair Value Level 3 Valuation Technique(s) Significant Unobservable Input Range of Inputs Weighted Average (1) March 31, 2019 Trading and available-for-sale debt securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 427 Discounted cash flow Discount rate 1.8 - 6.4 % 3.0 43 Vendor priced Collateralized loan and other debt obligations (2) 275 Market comparable pricing Comparability adjustment (12.0 ) - 16.1 2.1 755 Vendor priced Corporate debt securities 225 Discounted cash flow Discount rate 2.0 14.9 8.5 64 Market comparable pricing Comparability adjustment (11.1 ) 15.3 (2.1 ) 129 Vendor priced Asset-backed securities: Diversified payment rights (3) 150 Discounted cash flow Discount rate 3.1 - 6.8 4.0 Other commercial and consumer 195 (4) Discounted cash flow Discount rate 4.5 - 5.4 4.6 Weighted average life 1.4 - 1.9 yrs 1.8 17 Vendor priced Mortgage loans held for sale (residential) 982 Discounted cash flow Default rate 0.0 - 16.6 % 0.8 Discount rate 2.6 - 6.4 5.3 Loss severity 0.0 - 48.7 27.9 Prepayment rate 4.2 - 13.7 5.6 16 Market comparable pricing Comparability adjustment (56.3 ) - (6.3 ) (38.0 ) Loans 225 (5) Discounted cash flow Discount rate 3.9 - 4.8 4.2 Prepayment rate 4.0 - 100.0 86.6 Loss severity 0.0 - 34.8 11.2 Mortgage servicing rights (residential) 13,336 Discounted cash flow Cost to service per loan (6) $ 63 - 508 103 Discount rate 6.9 - 13.8 % 7.6 Prepayment rate (7) 10.5 - 25.2 11.3 Net derivative assets and (liabilities): Interest rate contracts 43 Discounted cash flow Default rate 0.0 - 5.0 2.0 Loss severity 50.0 - 50.0 50.0 Prepayment rate 2.8 - 25.0 15.3 Interest rate contracts: derivative loan commitments 58 Discounted cash flow Fall-out factor 1.0 - 99.0 20.5 Initial-value servicing (37.3 ) - 67.2 bps 20.1 Equity contracts 120 Discounted cash flow Conversion factor (9.0 ) - 0.0 % (7.7 ) Weighted average life 1.3 - 3.8 yrs 2.2 (282 ) Option model Correlation factor (77.0 ) - 99.0 % 24.5 Volatility factor 6.5 - 100.0 19.0 Credit contracts 2 Market comparable pricing Comparability adjustment (42.5 ) - 30.2 (5.4 ) 47 Option model Credit spread 0.1 - 18.4 1.0 Loss severity 13.0 - 60.0 45.2 Nonmarketable equity securities 6,381 Market comparable pricing Comparability adjustment (22.5 ) - (6.5 ) (16.7 ) Insignificant Level 3 assets, net of liabilities 91 (8) Total level 3 assets, net of liabilities $ 23,299 (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 $755 million of collateralized debt obligations. (3) Securities backed by specified sources of current and future receivables generated from foreign originators. (4) Predominantly 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 $63 - $199 . (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 mortgage-backed securities, other trading positions, other liabilities and certain net derivative assets and liabilities, such as commodity contracts and foreign exchange contracts. (9) Consists of total Level 3 assets of $25.2 billion and total Level 3 liabilities of $1.9 billion , before netting of derivative balances. Table 16.8: Valuation Techniques – Recurring Basis – Dece mber 31, 2018 ($ 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, 2018 Trading and available-for-sale debt securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 404 Discounted cash flow Discount rate 2.1 - 6.4 % 3.4 43 Vendor priced Collateralized loan and other debt obligations (2) 298 Market comparable pricing Comparability adjustment (13.5 ) - 22.1 3.2 739 Vendor priced Corporate debt securities 220 Discounted cash flow Discount rate 4.0 11.7 8.5 56 Market comparable pricing Comparability adjustment (11.3 ) 16.6 (1.4 ) 128 Vendor priced Asset-backed securities: Diversified payment rights (3) 171 Discounted cash flow Discount rate 3.4 - 6.2 4.4 Other commercial and consumer 198 (4) Discounted cash flow Discount rate 4.6 - 5.2 4.7 Weighted average life 1.1 - 1.5 yrs 1.1 20 Vendor priced Mortgage loans held for sale (residential) 982 Discounted cash flow Default rate 0.0 - 15.6 % 0.8 Discount rate 1.1 - 6.6 5.5 Loss severity — - 43.3 23.4 Prepayment rate 3.2 - 13.4 4.6 15 Market comparable pricing Comparability adjustment (56.3 ) - (6.3 ) (36.3 ) Loans 244 (5) Discounted cash flow Discount rate 3.4 - 6.4 4.2 Prepayment rate 2.9 - 100.0 87.2 Loss severity 0.0 - 34.8 10.2 Mortgage servicing rights (residential) 14,649 Discounted cash flow Cost to service per loan (6) $ 62 - 507 106 Discount rate 7.1 - 15.3 % 8.1 Prepayment rate (7) 9.0 - 23.5 9.9 Net derivative assets and (liabilities): Interest rate contracts (35 ) Discounted cash flow Default rate 0.0 - 5.0 2.0 Loss severity 50.0 - 50.0 50.0 Prepayment rate 2.8 - 25.0 13.8 Interest rate contracts: derivative loan commitments 60 Discounted cash flow Fall-out factor 1.0 - 99.0 19.4 Initial-value servicing (36.6 ) - 91.7 bps 18.5 Equity contracts 104 Discounted cash flow Conversion factor (9.3 ) - 0.0 % (7.8 ) Weighted average life 1.0 - 3.0 yrs 1.8 (121 ) Option model Correlation factor (77.0 ) - 99.0 % 21.6 Volatility factor 6.5 - 100.0 21.8 Credit contracts 3 Market comparable pricing Comparability adjustment (15.5 ) - 40.0 3.5 32 Option model Credit spread 0.9 - 21.5 1.3 Loss severity 13.0 - 60.0 45.2 Nonmarketable equity securities 5,468 Market comparable pricing Comparability adjustment (20.6 ) - (4.3 ) (15.8 ) Insignificant Level 3 assets, net of liabilities 93 (8) Total level 3 assets, net of liabilities $ 23,771 (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 $800 million of collateralized debt obligations. (3) Securities backed by specified sources of current and future receivables generated from foreign originators. (4) Predominantly 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 $62 - $204 . (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 mortgage-backed securities, other trading positions, other liabilities and certain net

Preferred Stock

Preferred Stock	3 Months Ended
	Mar. 31, 2019
Preferred Stock [Abstract]
Preferred Stock	Note 17: 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 17.1: Preferred Stock Shares March 31, 2019 December 31, 2018 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 I Floating Class A Preferred Stock (1) 100,000 25,010 100,000 25,010 Series K Floating Non-Cumulative Perpetual Class A Preferred Stock (2) 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 25,000 27,600 ESOP Cumulative Convertible Preferred Stock (3) — 1,406,460 — 1,406,460 Total 9,586,770 9,586,770 (1) Series I preferred stock issuance relates to trust preferred securities. See Note 10 (Securitizations and Variable Interest Entities) in this Report for additional information. This issuance has a floating interest rate that is the greater of three-month LIBOR plus 0.93% and 5.56975%. (2) Floating rate for Preferred Stock, Series K, is three-month LIBOR plus 3.77%. (3) 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 17.2: Preferred Stock – Shares Issued and Carrying Value March 31, 2019 December 31, 2018 (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)(2) Floating Class A Preferred Stock 25,010 2,501 2,501 — 25,010 2,501 2,501 — Series K (1)(3) 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 3,967,995 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 — 27,600 690 690 — ESOP Cumulative Convertible Preferred Stock 1,406,460 1,407 1,407 — 1,406,460 1,407 1,407 — Total 9,377,211 $ 24,458 23,214 1,244 9,377,216 $ 24,458 23,214 1,244 (1) Preferred shares qualify as Tier 1 capital. (2) Floating rate for Preferred Stock, Series I, is the greater of three-month LIBOR plus 0.93% and 5.56975%. (3) Floating rate for Preferred Stock, Series K, is three-month LIBOR plus 3.77% . 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 17.3: ESOP Preferred Stock Shares issued and outstanding Carrying value Adjustable dividend rate (in millions, except shares) Mar 31, Dec 31, Mar 31, Dec 31, Minimum Maximum ESOP Preferred Stock $1,000 liquidation preference per share 2018 336,945 336,945 337 337 7.00 % 8.00 % 2017 222,210 222,210 222 222 7.00 8.00 2016 233,835 233,835 234 234 9.30 10.30 2015 144,338 144,338 144 144 8.90 9.90 2014 174,151 174,151 174 174 8.70 9.70 2013 133,948 133,948 134 134 8.50 9.50 2012 77,634 77,634 78 78 10.00 11.00 2011 61,796 61,796 62 62 9.00 10.00 2010 (1) 21,603 21,603 22 22 9.50 10.50 Total ESOP Preferred Stock (2) 1,406,460 1,406,460 $ 1,407 1,407 Unearned ESOP shares (3) $ (1,502 ) (1,502 ) (1) In April 2019, all of the 2010 ESOP Preferred Stock was converted into common stock. (2) Additional paid-in capital included $95 million at both March 31, 2019 and December 31, 2018, related to ESOP preferred stock. (3) 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.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Note 18: Revenue from Contracts with Customers Our revenue includes net interest income on financial instruments and noninterest income. Table 18.1 presents our revenue by operating segment. The “Other” segment for each of the tables below includes the elimination of certain items that are included in more than one business segment, substantially all of which represents products and services for WIM customers served through Community Banking distribution channels. For additional description of our operating segments, including additional financial information and the underlying management accounting process, see Note 22 (Operating Segments). We adopted ASU 2014-09 – Revenue from Contracts with Customers on a modified retrospective basis as of January 1, 2018. For details on the impact of the adoption of this ASU, see Note 1 (Summary of Significant Accounting Policies) to Financial Statements in our 2018 Form 10-K. Table 18.1 : Revenue by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other (3) Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Net interest income (1) $ 7,248 7,195 4,534 4,532 1,101 1,112 (572 ) (601 ) 12,311 12,238 Noninterest income: Service charges on deposit accounts 610 639 483 534 4 4 (3 ) (4 ) 1,094 1,173 Trust and investment fees: Brokerage advisory, commissions and other fees 449 478 78 67 2,124 2,344 (458 ) (486 ) 2,193 2,403 Trust and investment management 210 233 114 113 676 743 (214 ) (239 ) 786 850 Investment banking (20 ) (10 ) 412 440 5 — (3 ) — 394 430 Total trust and investment fees 639 701 604 620 2,805 3,087 (675 ) (725 ) 3,373 3,683 Card fees 858 821 86 87 1 1 (1 ) (1 ) 944 908 Other fees: Lending related charges and fees (1)(2) 65 76 282 304 2 2 (2 ) (2 ) 347 380 Cash network fees 109 125 — 1 — — — — 109 126 Commercial real estate brokerage commissions — — 81 85 — — — — 81 85 Wire transfer and other remittance fees 64 63 48 52 2 2 (1 ) (1 ) 113 116 All other fees (1) 94 63 26 30 — — — — 120 93 Total other fees 332 327 437 472 4 4 (3 ) (3 ) 770 800 Mortgage banking (1) 641 842 68 93 (3 ) (3 ) 2 2 708 934 Insurance (1) 11 28 78 79 17 18 (10 ) (11 ) 96 114 Net gains (losses) from trading activities (1) 5 (1 ) 333 225 19 19 — — 357 243 Net gains on debt securities (1) 37 — 88 1 — — — — 125 1 Net gains from equity securities (1) 601 684 77 93 136 6 — — 814 783 Lease income (1) — — 443 455 — — — — 443 455 Other income of the segment (1) 768 594 (120 ) 88 (5 ) (6 ) (69 ) (74 ) 574 602 Total noninterest income 4,502 4,635 2,577 2,747 2,978 3,130 (759 ) (816 ) 9,298 9,696 Revenue $ 11,750 11,830 7,111 7,279 4,079 4,242 (1,331 ) (1,417 ) 21,609 21,934 (1) Most of our revenue is not within the scope of Accounting Standards Update (ASU) 2014-09 – Revenue from Contracts with Customers , and additional details are included in other footnotes to our financial statements. The scope explicitly excludes net interest income as well as many other revenues for financial assets and liabilities, including loans, leases, securities, and derivatives. (2) Represents combined amount of previously reported “Charges and fees on loans” and “Letters of credit fees”. (3) Includes the elimination of certain items that are included in more than one business segment, substantially all of which represents products and services for WIM customers served through Community Banking distribution channels. We provide services to customers which have related performance obligations that we complete to recognize revenue. Our revenues are generally recognized either immediately upon the completion of our service or over time as we perform services. Any services performed over time generally require that we render services each period and therefore we measure our progress in completing these services based upon the passage of time. SERVICE CHARGES ON DEPOSIT ACCOUNTS are earned on depository accounts for commercial and consumer customers and include fees for account and overdraft services. Account charges include fees for periodic account maintenance activities and event-driven services such as stop payment fees. Our obligation for event-driven services is satisfied at the time of the event when the service is delivered, while our obligation for maintenance services is satisfied over the course of each month. Our obligation for overdraft services is satisfied at the time of the overdraft. Table 18.2 presents our service charges on deposit accounts by operating segment. Table 18.2 : Service Charges on Deposit Accounts by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Overdraft fees $ 417 412 1 2 — — — — 418 414 Account charges 193 227 482 532 4 4 (3 ) (4 ) 676 759 Service charges on deposit accounts $ 610 639 483 534 4 4 (3 ) (4 ) 1,094 1,173 BROKERAGE ADVISORY, COMMISSIONS AND OTHER FEES are earned for providing full-service and discount brokerage services predominantly to retail brokerage clients. These revenues include fees earned on asset-based and transactional accounts and other brokerage advisory services. Asset-based revenues are charged based on the market value of the client’s assets. The services and related obligations associated with certain of these revenues, which include investment advice, active management of client assets, or assistance with selecting and engaging a third-party advisory manager, are generally satisfied over a month or quarter. The remaining revenues include trailing commissions which are earned for selling shares to investors. Our obligation associated with earning trailing commissions is satisfied at the time shares are sold. However, these fees are received and recognized over time during the period the customer owns the shares and we remain the broker of record. The amount of trailing commissions is variable based on the length of time the customer holds the shares and on changes in the value of the underlying assets. Transactional revenues are earned for executing transactions at the client’s direction. Our obligation is generally satisfied upon the execution of the transaction and the fees are based on the size and number of transactions executed. Other revenues earned from other brokerage advisory services include omnibus and networking fees received from mutual fund companies in return for providing record keeping and other administrative services, and annual account maintenance fees charged to customers. Table 18.3 presents our brokerage advisory, commissions and other fees by operating segment. Table 18.3 : Brokerage Advisory, Commissions and Other Fees by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Asset-based revenue (1) $ 343 371 — — 1,580 1,743 (343 ) (371 ) 1,580 1,743 Transactional revenue 89 93 16 12 387 439 (98 ) (100 ) 394 444 Other revenue 17 14 62 55 157 162 (17 ) (15 ) 219 216 Brokerage advisory, commissions and other fees $ 449 478 78 67 2,124 2,344 (458 ) (486 ) 2,193 2,403 (1) We earned trailing commissions of $280 million and $331 million in first quarter 2019 and 2018 , respectively. TRUST AND INVESTMENT MANAGEMENT FEES are earned for providing trust, investment management and other related services. Investment management services include managing and administering assets, including mutual funds, and institutional separate accounts. Fees for these services are generally determined based on a tiered scale relative to the market value of assets under management (AUM). In addition to AUM, we have client assets under administration (AUA) that earn various administrative fees which are generally based on the extent of the services provided to administer the account. Services with AUM and AUA-based fees are generally performed over time. Trust services include acting as a trustee or agent for corporate trust, personal trust, and agency assets. Obligations for trust services are generally satisfied over time, while obligations for activities that are transactional in nature are satisfied at the time of the transaction. Other related services include the custody and safekeeping of accounts. Our obligation for these services is generally satisfied over time. Table 18.4 presents our trust and investment management fees by operating segment. Table 18.4 : Trust and Investment Management Fees by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Investment management fees $ 1 — — — 477 534 — — 478 534 Trust fees 209 221 82 86 168 188 (214 ) (239 ) 245 256 Other revenue — 12 32 27 31 21 — — 63 60 Trust and investment management fees $ 210 233 114 113 676 743 (214 ) (239 ) 786 850 INVESTMENT BANKING FEES are earned for underwriting debt and equity securities, arranging loan syndications and performing other advisory services. Our obligation for these services is generally satisfied at closing of the transaction. Substantially all of these fees are in the Wholesale Banking operating segment. CARD FEES include credit and debit card interchange and network revenues and various card-related fees. Credit and debit card interchange and network revenues are earned on credit and debit card transactions conducted through payment networks such as Visa, MasterCard, and American Express. Our obligation is satisfied concurrently with the delivery of services on a daily basis . Table 18.5 presents our card fees by operating segment. Table 18.5 : Card Fees by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Credit card interchange and network revenues (1) $ 189 171 86 87 1 1 (1 ) (1 ) 275 258 Debit card interchange and network revenues 507 479 — — — — — — 507 479 Late fees, cash advance fees, balance transfer fees, and annual fees 162 171 — — — — — — 162 171 Card fees (1) $ 858 821 86 87 1 1 (1 ) (1 ) 944 908 (1) The cost of credit card rewards and rebates of $354 million and $343 million for the quarters ended March 31, 2019 and 2018, respectively, are presented net against the related revenues. CASH NETWORK FEES are earned for processing ATM transactions. Our obligation is completed daily upon settlement of ATM transactions. All of these fees are in the Community Banking operating segment. COMMERCIAL REAL ESTATE BROKERAGE COMMISSIONS are earned for assisting customers in the sale of real estate property. Our obligation is satisfied upon the successful brokering of a transaction. Fees are based on a fixed percentage of the sales price. All of these fees are in the Wholesale Banking operating segment. WIRE TRANSFER AND OTHER REMITTANCE FEES consist of fees earned for funds transfer services and issuing cashier’s checks and money orders. Our obligation is satisfied at the time of the funds transfer services or upon issuance of the cashier’s check or money order. Substantially all of these fees are in the Community Banking and Wholesale Banking operating segments. ALL OTHER FEES include various types of fees earned on services to customers which have related performance obligations that we complete to recognize revenue. A majority portion of the revenue is earned from providing business payroll services and merchant services, which are generally recognized over time as we perform the services. Most of these fees are in the Community Banking operating segment.

Employee Benefits

Employee Benefits	3 Months Ended
	Mar. 31, 2019
Defined Benefit Plan [Abstract]
Employee Benefits	Note 19: Employee Benefits We sponsor a frozen noncontributory qualified defined benefit retirement plan, 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. For additional information on our pension and postretirement plans, including plan assumptions, investment strategy and asset allocation, projected benefit payments, and valuation methodologies used for assets measured at fair value, see Note 22 (Employee Benefits and Other Expenses) to Financial Statements in our 2018 Form 10-K. Table 19.1 presents the components of net periodic benefit cost. Table 19.1: Net Periodic Benefit Cost 2019 2018 Pension benefits Pension benefits (in millions) Qualified Non-qualified Other benefits Qualified Non-qualified Other benefits Quarter ended March 31, Service cost $ 3 — — 1 — — Interest cost (1) 105 6 5 98 5 5 Expected return on plan assets (1) (142 ) — (7 ) (160 ) — (7 ) Amortization of net actuarial loss (gain) (1) 37 2 (4 ) 33 3 (4 ) Amortization of prior service credit (1) — — (2 ) — — (3 ) Settlement loss (1) — 2 — — 3 — Net periodic benefit cost (income) $ 3 10 (8 ) (28 ) 11 (9 ) (1) Balances are reported in other noninterest expense on the consolidated statement of income.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Common Share	Note 20: Earnings and Dividends Per Common Share Table 20.1 shows earnings per common share and diluted earnings per common share and reconciles the numerator and denominator of both earnings per common share calculations. See Note 1 (Summary of Significant Accounting Policies) for discussion of share repurchases. Table 20.1: Earnings Per Common Share Calculations Quarter ended March 31, (in millions, except per share amounts) 2019 2018 Wells Fargo net income $ 5,860 5,136 Less: Preferred stock dividends and other 353 403 Wells Fargo net income applicable to common stock (numerator) $ 5,507 4,733 Earnings per common share Average common shares outstanding (denominator) 4,551.5 4,885.7 Per share $ 1.21 0.97 Diluted earnings per common share Average common shares outstanding 4,551.5 4,885.7 Add: Stock options 2.5 9.9 Restricted share rights 30.0 28.3 Warrants — 6.8 Diluted average common shares outstanding (denominator) 4,584.0 4,930.7 Per share $ 1.20 0.96 Table 20.2 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 20.2: Outstanding Anti-Dilutive Options Weighted-average shares Quarter ended March 31, (in millions) 2019 2018 Options — 0.9 Table 20.3 presents dividends declared per common share. Table 20.3: Dividends Declared Per Common Share Quarter ended March 31, 2019 2018 Per common share 0.450 0.390

Other Comprehensive Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2019
Cumulative Other Comprehensive Income Balances [Abstract]
Other Comprehensive Income	Note 21: Other Comprehensive Income Table 21.1 provides the components of OCI, reclassifications to net income by income statement line item, and the related tax effects. Table 21.1: Summary of Other Comprehensive Income Quarter ended March 31, 2019 2018 (in millions) Before tax Tax effect Net of tax Before tax Tax effect Net of tax Debt securities: Net unrealized gains (losses) arising during the period $ 2,831 (695 ) 2,136 (3,443 ) 848 (2,595 ) Reclassification of net (gains) losses to net income: Interest income on debt securities (1) 45 (11 ) 34 69 (17 ) 52 Net gains on debt securities (125 ) 31 (94 ) (1 ) — (1 ) Other noninterest income (1 ) — (1 ) — — — Subtotal reclassifications to net income (81 ) 20 (61 ) 68 (17 ) 51 Net change 2,750 (675 ) 2,075 (3,375 ) 831 (2,544 ) Derivatives and hedging activities: Fair Value Hedges: Change in fair value of excluded components on fair value hedges (2) (26 ) 7 (19 ) 24 (6 ) 18 Cash Flow Hedges: Net unrealized losses arising during the period on cash flow hedges (9 ) 2 (7 ) (266 ) 66 (200 ) Reclassification of net losses to net income on cash flow hedges: Interest income on loans 78 (19 ) 59 60 (15 ) 45 Interest expense on long-term debt 1 — 1 — — — Subtotal reclassifications to net income 79 (19 ) 60 60 (15 ) 45 Net change 44 (10 ) 34 (182 ) 45 (137 ) Defined benefit plans adjustments: Net actuarial and prior service gains (losses) arising during the period (4 ) 1 (3 ) 6 (2 ) 4 Reclassification of amounts to non interest expense: Amortization of net actuarial loss 35 (8 ) 27 32 (8 ) 24 Settlements and other — — — — 1 1 Subtotal reclassifications to non interest expense 35 (8 ) 27 32 (7 ) 25 Net change 31 (7 ) 24 38 (9 ) 29 Foreign currency translation adjustments: Net unrealized gains (losses) arising during the period 42 (2 ) 40 (2 ) (5 ) (7 ) Net change 42 (2 ) 40 (2 ) (5 ) (7 ) Other comprehensive income (loss) $ 2,867 (694 ) 2,173 (3,521 ) 862 (2,659 ) Less: Other comprehensive income from noncontrolling interests, net of tax — — Wells Fargo other comprehensive income (loss), net of tax $ 2,173 (2,659 ) (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) Represents changes in fair value of cross-currency swaps attributable to changes in cross-currency basis spreads, which are excluded from the assessment of effectiveness recorded in other comprehensive income. Table 21.2: Cumulative OCI Balances (in millions) Debt securities Derivatives and hedging activities Defined benefit plans adjustments Foreign currency translation adjustments Cumulative other compre- hensive income Quarter ended March 31, 2019 Balance, beginning of period $ (3,122 ) (685 ) (2,296 ) (233 ) (6,336 ) Transition adjustment (1) 481 — — — 481 Balance, January 1, 2019 (2,641 ) (685 ) (2,296 ) (233 ) (5,855 ) Net unrealized gains (losses) arising during the period 2,136 (26 ) (3 ) 40 2,147 Amounts reclassified from accumulated other comprehensive income (61 ) 60 27 — 26 Net change 2,075 34 24 40 2,173 Less: Other comprehensive income from noncontrolling interests — — — — — Balance, end of period $ (566 ) (651 ) (2,272 ) (193 ) (3,682 ) Quarter ended March 31, 2018 Balance, beginning of period $ 171 (418 ) (1,808 ) (89 ) (2,144 ) Transition adjustment (2) (118 ) — — — (118 ) Balance, January 1, 2018 53 (418 ) (1,808 ) (89 ) (2,262 ) Net unrealized gains (losses) arising during the period (2,595 ) (182 ) 4 (7 ) (2,780 ) Amounts reclassified from accumulated other comprehensive income 51 45 25 — 121 Net change (2,544 ) (137 ) 29 (7 ) (2,659 ) Less: Other comprehensive income from noncontrolling interests — — — — — Balance, end of period $ (2,491 ) (555 ) (1,779 ) (96 ) (4,921 ) (1) The transition adjustment relates to the adoption of ASU 2017-08 – Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities . See Note 1 (Summary of Significant Accounting Policies) for more information. (2) The transition adjustment relates to the adoption of ASU 2016-01 – Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . See Note 1 (Summary of Significant Accounting Policies) for more information.

Operating Segments

Operating Segments	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Operating Segments	Note 22: 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 see Note 26 (Operating Segments) to Financial Statements in our 2018 Form 10-K. Table 22.1 presents our results by operating segment. Table 22.1: Operating Segments Community Wholesale Banking Wealth and Investment Management Other (1) Consolidated Company (income/expense in millions, average balances in billions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Quarter ended March 31, Net interest income (2) $ 7,248 7,195 4,534 4,532 1,101 1,112 (572 ) (601 ) 12,311 12,238 Provision (reversal of provision) for credit losses 710 218 134 (20 ) 4 (6 ) (3 ) (1 ) 845 191 Noninterest income 4,502 4,635 2,577 2,747 2,978 3,130 (759 ) (816 ) 9,298 9,696 Noninterest expense 7,689 8,702 3,838 3,978 3,303 3,290 (914 ) (928 ) 13,916 15,042 Income (loss) before income tax expense (benefit) 3,351 2,910 3,139 3,321 772 958 (414 ) (488 ) 6,848 6,701 Income tax expense (benefit) 424 809 369 448 192 239 (104 ) (122 ) 881 1,374 Net income (loss) before noncontrolling interests 2,927 2,101 2,770 2,873 580 719 (310 ) (366 ) 5,967 5,327 Less: Net income (loss) from noncontrolling interests 104 188 — (2 ) 3 5 — — 107 191 Net income (loss) (3) $ 2,823 1,913 2,770 2,875 577 714 (310 ) (366 ) 5,860 5,136 Average loans $ 458.2 470.5 476.4 465.1 74.4 73.9 (59.0 ) (58.5 ) 950.0 951.0 Average assets 1,015.4 1,061.9 844.5 829.2 83.2 84.2 (60.0 ) (59.4 ) 1,883.1 1,915.9 Average deposits 765.6 747.5 409.8 446.0 153.2 177.9 (66.5 ) (74.2 ) 1,262.1 1,297.2 (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 as well as interest credits for any funding of a segment available to be provided to other segments. The cost of liabilities includes actual interest expense on segment liabilities as well as funding charges for any funding provided from other segments. (3) Represents segment net income (loss) for Community Banking; Wholesale Banking; and Wealth and Investment Management segments and Wells Fargo net income for the consolidated company.

Regulatory and Agency Capital R

Regulatory and Agency Capital Requirements	3 Months Ended
	Mar. 31, 2019
Banking and Thrift [Abstract]
Regulatory and Agency Capital Requirements	Note 23: 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 23.1 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 Standardized Approach applies assigned risk weights to broad risk categories, while the calculation of risk-weighted assets (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 capital rules are being phased-in effective January 1, 2014, through the end of 2021. Beginning January 1, 2018, the requirements for calculating CET1 and tier 1 capital, along with RWAs, became fully phased-in. Accordingly, the information presented reflects fully phased-in CET1 capital, tier 1 capital, and RWAs, but reflects total capital still in accordance with Transition Requirements . The Bank is an approved seller/servicer of mortgage loans and is required to maintain minimum levels of shareholders’ equity, as specified by various agencies, including the United States Department of Housing and Urban Development, GNMA, FHLMC and FNMA. At March 31, 2019 , 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 23.1: Regulatory Capital Information Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 (in millions, except ratios) Advanced Approach Standardized Approach Advanced Approach Standardized Advanced Approach Standardized Advanced Approach Standardized Regulatory capital: Common equity tier 1 $ 148,124 148,124 146,363 146,363 145,091 145,091 142,685 142,685 Tier 1 169,611 169,611 167,866 167,866 145,091 145,091 142,685 142,685 Total 199,851 208,042 198,798 207,041 158,074 165,836 155,558 163,380 Assets: Risk-weighted assets $ 1,176,360 1,243,125 1,177,350 1,247,210 1,056,290 1,143,763 1,058,653 1,154,182 Adjusted average assets (1) 1,854,367 1,854,367 1,850,299 1,850,299 1,647,785 1,647,785 1,652,009 1,652,009 Regulatory capital ratios: Common equity tier 1 capital 12.59 % 11.92 * 12.43 11.74 * 13.74 12.69 * 13.48 12.36 * Tier 1 capital 14.42 13.64 * 14.26 13.46 * 13.74 12.69 * 13.48 12.36 * Total capital 16.99 16.74 * 16.89 16.60 * 14.97 14.50 * 14.69 14.16 * Tier 1 leverage (1) 9.15 9.15 9.07 9.07 8.81 8.81 8.64 8.64 Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 Supplementary leverage: (2) Total leverage exposure $ 2,180,614 2,174,564 1,951,217 1,957,276 Supplementary leverage ratio 7.78 % 7.72 7.44 7.29 *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. (2) The supplementary leverage ratio consists of Tier 1 capital divided by total leverage exposure. Total leverage exposure consists of the total average on-balance sheet assets, plus off-balance sheet exposures, such as undrawn commitments and derivative exposures, less amounts permitted to be deducted from Tier 1 capital. Table 23.2 presents the minimum required regulatory capital ratios under Transition Requirements to which the Company and the Bank were subject as of March 31, 2019 , and December 31, 2018 . Table 23.2: Minimum Required Regulatory Capital Ratios – Transition Requirements (1) Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 Regulatory capital ratios: Common equity tier 1 capital 9.000 % 7.875 7.000 6.375 Tier 1 capital 10.500 9.375 8.500 7.875 Total capital 12.500 11.375 10.500 9.875 Tier 1 leverage 4.000 4.000 4.000 4.000 Supplementary leverage 5.000 5.000 6.000 6.000 (1) At March 31, 2019 , under transition requirements, the CET1, tier 1 and total capital minimum ratio requirements for Wells Fargo & Company include a capital conservation buffer of 2.500% and a global systemically important bank (G-SIB) surcharge of 2.000% . Only the 2.500% capital conservation buffer applies to the Bank at March 31, 2019 .

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Significant Accounting Policies [Line Items]
Business Description and Basis of Presentation	Wells Fargo & Company is a diversified financial services company. We provide banking, trust and investments, mortgage banking, investment banking, retail banking, brokerage, and consumer and commercial finance through banking locations, 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, 2018 ( 2018 Form 10-K).
Use of Estimates	To prepare the financial statements in conformity with GAAP, management must make estimates based on assumptions about future economic and market conditions (for example, unemployment, market liquidity, real estate prices, etc.) that affect the reported amounts of assets and liabilities at the date of the financial statements, income and expenses during the reporting period and the related disclosures. Although our estimates contemplate current conditions and how we expect them to change in the future, it is reasonably possible that actual conditions could be worse than anticipated in those estimates, which could materially affect our results of operations and financial condition. Management has made significant estimates in several areas, including: • allowance for credit losses (Note 6 (Loans and Allowance for Credit Losses)); • valuations of residential mortgage servicing rights (MSRs) (Note 10 (Securitizations and Variable Interest Entities) and Note 11 (Mortgage Banking Activities)); • valuations of financial instruments (Note 15 (Derivatives) and Note 16 (Fair Values of Assets and Liabilities)); • liabilities for contingent litigation losses (Note 14 (Legal Actions)); and • income taxes. Actual results could differ from those estimates.
Comparability of Prior Year Financial Data	These unaudited interim financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. The interim financial information should be read in conjunction with our 2018 Form 10-K.
Accounting Standards Adopted in 2019	Accounting Standards Adopted in 2019 In first quarter 2019 , we adopted the following new accounting guidance: • Accounting Standards Update (ASU or Update) 2018-16 – Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes • ASU 2017-08 – Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities • ASU 2016-02 – Leases (Topic 842) and subsequent related Updates, including early adoption of ASU 2019-01 – Leases (Topic 842): Codification Improvements
Lessor, Leases [Policy Text Block]	AS LESSOR We lease equipment to our customers under financing or operating leases. Financing leases are presented in loans and are recorded at the discounted amounts of lease payments receivable plus the estimated residual value of the leased asset. Leveraged leases, which are a form of financing leases, are reduced by related non-recourse debt from third-party investors. Lease payments receivable reflect contractual lease payments adjusted for renewal or termination options that we believe the customer is reasonably certain to exercise. The residual value reflects our best estimate of the expected sales price for the equipment at lease termination based on sales history adjusted for recent trends in the expected exit markets. Many of our leases allow the customer to extend the lease at prevailing market terms or purchase the asset for fair value at lease termination. Our allowance for loan losses for financing leases considers both the collectability of the lease payments receivable as well as the estimated residual value of the leased asset. We typically purchase residual value insurance on our financing leases so that our risk of loss at lease termination will be less than 10% of the initial value of the lease. Our risk to declines in residual values is further mitigated by the diversity of leased assets in our lease portfolio. In addition, we have several channels for re-leasing or marketing those assets. In connection with a lease, we may finance the customer’s purchase of other products or services from the equipment vendor and allocate the contract consideration between the use of the asset and the purchase of those products or services based on information obtained from the vendor. Amounts allocated to financing of vendor products or services are reported in loans as commercial and industrial loans, rather than as lease financing. Our primary income from financing leases is interest income recognized using the effective interest method. Variable lease revenues, such as reimbursement for property taxes associated with the leased asset, are included in lease income within noninterest income. Operating lease assets are presented in other assets, net of accumulated depreciation. Periodic depreciation expense is recorded on a straight-line basis to the estimated residual value over the estimated useful life of the leased asset. On a periodic basis, operating lease assets are reviewed for impairment and impairment loss is recognized if the carrying amount of operating lease assets exceeds fair value and is not recoverable. The carrying amount of leased assets is deemed not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the lease payments and the estimated residual value upon the eventual disposition of the equipment. Depreciation of leased assets and impairment loss are presented in operating leases expense within other noninterest expense. Operating lease rental income for leased assets is recognized in lease income within noninterest income on a straight-line basis over the lease term. For leases of railcars, revenue for maintenance services provided under the lease is recognized in lease income. We elected to exclude from revenues and expenses any sales tax incurred on lease payments which are reimbursed by the lessee. Substantially all of our leased assets are protected against casualty loss through third party insurance.
Lessee, Leases [Policy Text Block]	AS LESSEE We enter into lease agreements to obtain the right to use assets for our business operations, substantially all of which are real estate. Lease liabilities and ROU assets are recognized when we enter into operating or financing leases and represent our obligations and rights to use these assets over the period of the leases and may be re-measured for certain modifications, resolution of certain contingencies involving variable consideration, or our exercise of options (renewal, extension, or termination) under the lease. Operating lease liabilities include fixed and in-substance fixed payments for the contractual duration of the lease, adjusted for renewals or terminations which were deemed probable of exercise when measured. The lease payments are discounted using a rate determined when the lease is recognized. As we typically do not know the discount rate implicit in the lease, we estimate a discount rate that we believe approximates a collateralized borrowing rate for the estimated duration of the lease. The discount rate is updated when re-measurement events occur. The related operating lease ROU assets may differ from operating lease liabilities due to initial direct costs, deferred or prepaid lease payments and lease incentives. We present operating lease liabilities in accrued expenses and other liabilities and the related operating lease ROU assets in other assets. The amortization of operating lease ROU assets and the accretion of operating lease liabilities are reported together as fixed lease expense and are included in net occupancy expense within noninterest expense. The fixed lease expense is recognized on a straight-line basis over the life of the lease. Some of our operating leases include variable lease payments which are periodic adjustments of our payments for the use of the asset based on changes in factors such as consumer price indices, fair market value, tax rates imposed by taxing authorities, or lessor cost of insurance. To the extent not included in operating lease liabilities and operating lease ROU assets, these variable lease payments are recognized as incurred in net occupancy expense within noninterest expense. We account for amounts paid for maintenance or other services as lease payments. In addition, for certain asset classes, we have elected to exclude leases with original terms of less than one year from the operating lease ROU assets and lease liabilities. The related short-term lease expense is included in net occupancy expense. Finance lease (formerly capital lease) liabilities are presented in long-term debt and the associated finance ROU assets are presented in premises and equipment.
Private Share Repurchases	Share Repurchases From time to time we may enter into private forward repurchase contracts, written repurchase plans pursuant to Rule 10b5-1 of the Securities Exchange Act of 1934, or a combination of the two to complement our open-market common stock repurchase strategies. The stock repurchase transactions 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 the private forward repurchase 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 the Board of Governors of the Federal Reserve System (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 did not enter into any private forward repurchase contracts in first quarter 2019 and we had no unsettled private share repurchase contracts at March 31, 2019 . Under a Rule 10b5-1 repurchase plan, payments and receipt of repurchased shares settle on the same day and the shares repurchased reduce the total number of outstanding shares of common stock upon the settlement of each trade under the plan.
Subsequent Events	Subsequent Events We have evaluated the effects of events that have occurred subsequent to March 31, 2019 , and, except as disclosed elsewhere in the footnotes, there have been no material events that would require recognition in our first quarter 2019 consolidated financial statements or disclosure in the Notes to the consolidated financial statements.
Accounting Standards Update 2018-16 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards Adopted in 2019	ASU 2018-16 expands the list of U.S. benchmark interest rates permitted in the application of hedge accounting. The Update adds the OIS rate based on SOFR as a U.S. benchmark interest rate to facilitate the LIBOR to SOFR transition and provide sufficient lead time for entities to prepare for changes to interest rate risk hedging strategies for both risk management and hedge accounting purposes. The Update is applied prospectively for qualifying new or re-designated hedging relationships entered into on or after adoption date. We adopted the guidance in first quarter 2019. The adoption did not have an impact as we did not designate SOFR OIS as a benchmark interest rate in any hedging relationships.
Accounting Standards Update 2017-08 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards Adopted in 2019	ASU 2017-08 changes the interest income recognition model for purchased callable debt securities carried at a premium, as the premium will be amortized to the earliest call date rather than to the contractual maturity date. Accounting for purchased callable debt securities held at a discount does not change, as the discount will continue to accrete to the contractual maturity date. The Update impacted our investments in purchased callable debt securities classified as available-for-sale (AFS) and held-to-maturity (HTM), which primarily consist of debt securities of U.S. states and political subdivisions. We adopted the Update in first quarter 2019 and recorded a cumulative-effect adjustment as of January 1, 2019, that decreased total stockholders’ equity by $111 million . Retained earnings was reduced by $592 million which reflects both the incremental premium amortization under the new guidance from the acquisition date of our impacted AFS and HTM debt securities through the date of adoption and the fact that the incremental premium amortization is not deductible for federal income tax purposes. Other comprehensive income (OCI) was increased by $481 million which reflects the corresponding adjustment to the adoption date unrealized gain or loss of impacted AFS debt securities. Going forward, interest income recognized prior to the call date will be reduced because the premium will be amortized over a shorter period.
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Accounting Standards Adopted in 2019	ASU 2016-02 modifies the guidance used by lessors and lessees to account for leasing transactions. For our transition to the new guidance, we elected several available practical expedients, including to not reassess the classification of our existing leases, any initial direct costs associated with our leases, or whether any existing contracts are or contain leases. In addition, we elected not to provide a comparative presentation for 2018 and 2017 financial statements. We adopted the Update in first quarter 2019 and recorded a cumulative-effect adjustment that increased retained earnings by $100 million related to deferred gains on our prior sale-leaseback transactions. We also recognized operating lease right-of-use (ROU) assets and liabilities, substantially all of which relate to our leasing of real estate as a lessee, of $4.9 billion and $5.6 billion , respectively.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information Significant noncash activities are presented in Table 1.1 . Table 1.1: Supplemental Cash Flow Information Quarter ended March 31, (in millions) 2019 2018 Trading debt securities retained from securitization of MLHFS $ 8,875 8,776 Transfers from loans to MLHFS 1,292 1,297 Transfers from loans to LHFS 3 1,973 Transfers from available-for-sale debt securities to held-to-maturity debt securities 2,407 4,451 Operating lease ROU assets acquired with operating lease liabilities (1) 5,127 — (1) First quarter 2019 includes $4.9 billion from adoption of ASU 2016-02 – Leases (Topic 842) and $227 million attributable to new leases and changes from modified leases.

Cash, Loan and Dividend Restr_2

Cash, Loan and Dividend Restrictions (Tables)	3 Months Ended
	Mar. 31, 2019
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Nature of Restrictions on Cash Equivalents [Table Text Block]	Table 3.1 provides a summary of restrictions on cash equivalents in addition to the FRB reserve cash balance requirements . Table 3.1: Nature of Restrictions on Cash Equivalents (in millions) Mar 31, Dec 31, Average required reserve balance for FRB (1) $ 11,164 12,428 Reserve balance for non-U.S. central banks 746 517 Segregated for benefit of brokerage customers under federal and other brokerage regulations 913 1,135 Related to consolidated variable interest entities (VIEs) that can only be used to settle liabilities of VIEs 24 147 (1) FRB required reserve balance represents average for first quarter 2019 and for the year ended December 31, 2018 .

Trading Activities (Tables)

Trading Activities (Tables)	3 Months Ended
	Mar. 31, 2019
Trading Activities [Abstract]
Trading Assets and Liabilities	Table 4.1 presents a summary of our trading assets and liabilities measured at fair value through earnings . Table 4.1: Trading Assets and Liabilities Mar 31, Dec 31, (in millions) 2019 2018 Trading assets: Debt securities $ 70,378 69,989 Equity securities 20,933 19,449 Loans held for sale 998 1,469 Gross trading derivative assets 30,002 29,216 Netting (1) (20,809 ) (19,807 ) Total trading derivative assets 9,193 9,409 Total trading assets 101,502 100,316 Trading liabilities: Short sale 21,586 19,720 Gross trading derivative liabilities 28,994 28,717 Netting (1) (22,810 ) (21,178 ) Total trading derivative liabilities 6,184 7,539 Total trading liabilities $ 27,770 27,259 (1) Represents balance sheet netting for trading derivative asset and liability balances, and trading portfolio level counterparty valuation adjustments.
Net Interest and Net Gains (Losses) on Trading Activities	Table 4.2 provides a summary of the net interest income earned from trading securities, and net gains and losses due to the realized and unrealized gains and losses from trading activities. Table 4.2: Net Interest Income and Net Gains (Losses) on Trading Activities Quarter ended March 31, (in millions) 2019 2018 Interest income (1): Debt securities $ 793 631 Equity securities 115 141 Loans held for sale 23 8 Total interest income 931 780 Less: Interest expense (2) 136 128 Net interest income 795 652 Net gains (losses) from trading activities: Debt securities 688 (499 ) Equity securities 2,067 (469 ) Loans held for sale 14 8 Derivatives (3) (2,412 ) 1,203 Total net gains from trading activities (4) 357 243 Total trading-related net interest and noninterest income $ 1,152 895 (1) Represents interest and dividend income earned on trading securities. (2) Represents interest and dividend expense incurred on trading securities we have sold but have not yet purchased. (3) Excludes economic hedging of mortgage banking and asset/liability management activities, for which hedge results (realized and unrealized) are reported with the respective hedged activities. (4) Represents realized gains (losses) from our trading activities and unrealized gains (losses) due to changes in fair value of our trading positions, attributable to the type of asset or liability.

AFS and HTM Debt Securities (Ta

AFS and HTM Debt Securities (Tables)	3 Months Ended
	Mar. 31, 2019
AFS and HTM Debt Securities [Abstract]
AFS and HTM Debt Securities, Amortized Cost and Fair Value, by Category	Table 5.1 provides the amortized cost and fair value by major categories of available-for-sale debt 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 debt securities are reported on an after-tax basis as a component of cumulative OCI. Information on debt securities held for trading is included in Note 4 (Trading Activities) to Financial Statements in this Report. Table 5.1: Amortized Cost and Fair Value (in millions) Amortized Cost Gross unrealized gains Gross unrealized losses Fair value March 31, 2019 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ 15,168 4 (66 ) 15,106 Securities of U.S. states and political subdivisions (1) 48,566 1,194 (60 ) 49,700 Mortgage-backed securities: Federal agencies 151,182 749 (1,268 ) 150,663 Residential 1,432 24 — 1,456 Commercial 4,332 50 (10 ) 4,372 Total mortgage-backed securities 156,946 823 (1,278 ) 156,491 Corporate debt securities 6,188 204 (38 ) 6,354 Collateralized loan and other debt obligations (2) 35,304 169 (158 ) 35,315 Other (3) 5,074 73 (14 ) 5,133 Total available-for-sale debt securities 267,246 2,467 (1,614 ) 268,099 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies 44,758 85 (150 ) 44,693 Securities of U.S. states and political subdivisions 6,163 102 (15 ) 6,250 Federal agency and other mortgage-backed securities (4) 94,009 419 (732 ) 93,696 Collateralized loan obligations 60 — — 60 Total held-to-maturity debt securities 144,990 606 (897 ) 144,699 Total $ 412,236 3,073 (2,511 ) 412,798 December 31, 2018 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ 13,451 3 (106 ) 13,348 Securities of U.S. states and political subdivisions (1) 48,994 716 (446 ) 49,264 Mortgage-backed securities: Federal agencies 155,974 369 (3,140 ) 153,203 Residential 2,638 142 (5 ) 2,775 Commercial 4,207 40 (22 ) 4,225 Total mortgage-backed securities 162,819 551 (3,167 ) 160,203 Corporate debt securities 6,230 131 (90 ) 6,271 Collateralized loan and other debt obligations (2) 35,581 158 (396 ) 35,343 Other (3) 5,396 100 (13 ) 5,483 Total available-for-sale debt securities 272,471 1,659 (4,218 ) 269,912 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies 44,751 4 (415 ) 44,340 Securities of U.S. states and political subdivisions 6,286 30 (116 ) 6,200 Federal agency and other mortgage-backed securities (4) 93,685 112 (2,288 ) 91,509 Collateralized loan obligations 66 — — 66 Total held-to-maturity debt securities 144,788 146 (2,819 ) 142,115 Total $ 417,259 1,805 (7,037 ) 412,027 (1) Includes investments in tax-exempt preferred debt securities issued by investment funds or trusts that predominantly invest in tax-exempt municipal securities. The cost basis and fair value of these types of securities was $5.6 billion each at March 31, 2019 , and $6.3 billion each at December 31, 2018 . (2) Includes collateralized debt obligations (CDOs) with a cost basis and fair value of $621 million and $755 million , respectively, at March 31, 2019 , and $662 million and $800 million , respectively, at December 31, 2018 . (3) Primarily includes asset-backed securities collateralized by student loans. (4) Predominantly consists of federal agency mortgage-backed securities at both March 31, 2019 and December 31, 2018 .
AFS and HTM Debt Securities, Gross Unrealized Losses and Fair Value, Over and Under 12 Months	Table 5.2 shows the gross unrealized losses and fair value of available-for-sale and held-to-maturity debt securities by length of time those individual securities in each category have been in a continuous loss position. Debt securities on which we have taken credit-related other-than-temporary impairment (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 5.2: Gross Unrealized Losses and Fair Value Less than 12 months 12 months or more Total (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2019 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ — — (66 ) 6,220 (66 ) 6,220 Securities of U.S. states and political subdivisions (13 ) 4,027 (47 ) 3,612 (60 ) 7,639 Mortgage-backed securities: Federal agencies (5 ) 1,392 (1,263 ) 95,706 (1,268 ) 97,098 Residential — — — — — — Commercial (7 ) 1,542 (3 ) 105 (10 ) 1,647 Total mortgage-backed securities (12 ) 2,934 (1,266 ) 95,811 (1,278 ) 98,745 Corporate debt securities (17 ) 736 (21 ) 373 (38 ) 1,109 Collateralized loan and other debt obligations (131 ) 19,572 (27 ) 2,513 (158 ) 22,085 Other (7 ) 1,034 (7 ) 278 (14 ) 1,312 Total available-for-sale debt securities (180 ) 28,303 (1,434 ) 108,807 (1,614 ) 137,110 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies — — (150 ) 30,379 (150 ) 30,379 Securities of U.S. states and political subdivisions — — (15 ) 1,663 (15 ) 1,663 Federal agency and other mortgage-backed securities — — (732 ) 64,315 (732 ) 64,315 Collateralized loan obligations — — — — — — Total held-to-maturity debt securities — — (897 ) 96,357 (897 ) 96,357 Total $ (180 ) 28,303 (2,331 ) 205,164 (2,511 ) 233,467 December 31, 2018 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ (1 ) 498 (105 ) 6,204 (106 ) 6,702 Securities of U.S. states and political subdivisions (73 ) 9,746 (373 ) 9,017 (446 ) 18,763 Mortgage-backed securities: Federal agencies (42 ) 10,979 (3,098 ) 112,252 (3,140 ) 123,231 Residential (3 ) 398 (2 ) 69 (5 ) 467 Commercial (20 ) 1,972 (2 ) 79 (22 ) 2,051 Total mortgage-backed securities (65 ) 13,349 (3,102 ) 112,400 (3,167 ) 125,749 Corporate debt securities (64 ) 1,965 (26 ) 298 (90 ) 2,263 Collateralized loan and other debt obligations (388 ) 28,306 (8 ) 553 (396 ) 28,859 Other (7 ) 819 (6 ) 159 (13 ) 978 Total available-for-sale debt securities (598 ) 54,683 (3,620 ) 128,631 (4,218 ) 183,314 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies (3 ) 895 (412 ) 41,083 (415 ) 41,978 Securities of U.S. states and political subdivisions (4 ) 598 (112 ) 3,992 (116 ) 4,590 Federal agency and other mortgage-backed securities (5 ) 4,635 (2,283 ) 77,741 (2,288 ) 82,376 Collateralized loan obligations — — — — — — Total held-to-maturity debt securities (12 ) 6,128 (2,807 ) 122,816 (2,819 ) 128,944 Total $ (610 ) 60,811 (6,427 ) 251,447 (7,037 ) 312,258
AFS and HTM Debt Securities, Gross Unrealized Losses and Fair Value, by Investment Grade	Table 5.3 shows the gross unrealized losses and fair value of the available-for-sale and held-to-maturity debt 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 debt security. Debt 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, debt securities rated below investment grade, labeled as “speculative grade” by the rating agencies, are considered to be distinctively higher credit risk than investment grade debt securities. We have also included debt securities not rated by S&P or Moody’s in the table below based on our internal credit grade of the debt 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 debt securities categorized as investment grade based on internal credit grades were $11 million and $4.0 billion , respectively, at March 31, 2019 , and $20 million and $5.2 billion , respectively, at December 31, 2018 . If an internal credit grade was not assigned, we categorized the debt security as non-investment grade. Table 5.3: Gross Unrealized Losses and Fair Value by Investment Grade Investment grade Non-investment grade (in millions) Gross unrealized losses Fair value Gross unrealized losses Fair value March 31, 2019 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ (66 ) 6,220 — — Securities of U.S. states and political subdivisions (48 ) 7,412 (12 ) 227 Mortgage-backed securities: Federal agencies (1,268 ) 97,098 — — Residential — — — — Commercial (8 ) 1,636 (2 ) 11 Total mortgage-backed securities (1,276 ) 98,734 (2 ) 11 Corporate debt securities (8 ) 455 (30 ) 654 Collateralized loan and other debt obligations (158 ) 22,085 — — Other (8 ) 1,039 (6 ) 273 Total available-for-sale debt securities (1,564 ) 135,945 (50 ) 1,165 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies (150 ) 30,379 — — Securities of U.S. states and political subdivisions (15 ) 1,663 — — Federal agency and other mortgage-backed securities (731 ) 64,185 (1 ) 130 Collateralized loan obligations — — — — Total held-to-maturity debt securities (896 ) 96,227 (1 ) 130 Total $ (2,460 ) 232,172 (51 ) 1,295 December 31, 2018 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies $ (106 ) 6,702 — — Securities of U.S. states and political subdivisions (425 ) 18,447 (21 ) 316 Mortgage-backed securities: Federal agencies (3,140 ) 123,231 — — Residential (2 ) 295 (3 ) 172 Commercial (20 ) 1,999 (2 ) 52 Total mortgage-backed securities (3,162 ) 125,525 (5 ) 224 Corporate debt securities (17 ) 791 (73 ) 1,472 Collateralized loan and other debt obligations (396 ) 28,859 — — Other (7 ) 726 (6 ) 252 Total available-for-sale debt securities (4,113 ) 181,050 (105 ) 2,264 Held-to-maturity debt securities: Securities of U.S. Treasury and federal agencies (415 ) 41,978 — — Securities of U.S. states and political subdivisions (116 ) 4,590 — — Federal agency and other mortgage-backed securities (2,278 ) 81,977 (10 ) 399 Collateralized loan obligations — — — — Total held-to-maturity debt securities (2,809 ) 128,545 (10 ) 399 Total $ (6,922 ) 309,595 (115 ) 2,663
AFS and HTM Debt Securities Contractual Maturities	Table 5.4 shows the fair value and contractual weighted-average yields (taxable-equivalent basis) of available-for-sale debt securities by contractual maturity. The remaining contractual principal maturities for mortgage-backed securities (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 5.4: Available-for Sale Debt Securities - 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 Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2019 Available-for-sale debt securities (1): Fair value: Securities of U.S. Treasury and federal agencies $ 15,106 1.93 % $ 2,154 1.63 % $ 12,903 1.98 % $ 49 1.89 % $ — — % Securities of U.S. states and political subdivisions 49,700 4.81 3,665 2.81 5,986 3.39 4,274 3.47 35,775 5.41 Mortgage-backed securities: Federal agencies 150,663 3.43 — — 152 3.50 1,819 2.57 148,692 3.44 Residential 1,456 2.97 — — 1 5.17 — — 1,455 2.96 Commercial 4,372 3.72 — — — — 341 3.60 4,031 3.73 Total mortgage-backed securities 156,491 3.44 — — 153 3.51 2,160 2.73 154,178 3.45 Corporate debt securities 6,354 5.09 430 5.78 2,509 5.25 2,795 4.70 620 5.67 Collateralized loan and other debt obligations 35,315 4.15 — — 18 4.80 10,889 4.24 24,408 4.11 Other 5,133 3.17 8 5.82 751 4.04 1,482 2.08 2,892 3.50 Total available-for-sale debt securities at fair value $ 268,099 3.73 % $ 6,257 2.61 % $ 22,320 2.81 % $ 21,649 3.85 % $ 217,873 3.85 % (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 5.5 shows the amortized cost and weighted-average yields of held-to-maturity debt securities by contractual maturity. Table 5.5: Held-to-Maturity Debt Securities - Amortized Cost by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Yield Amount Yield Amount Yield Amount Yield Amount Yield March 31, 2019 Held-to-maturity debt securities (1): Amortized cost: Securities of U.S. Treasury and federal agencies $ 44,758 2.12 % $ — — % $ 32,362 2.04 % $ 12,396 2.32 % $ — — % Securities of U.S. states and political subdivisions 6,163 4.92 — — 70 6.03 1,366 4.92 4,727 4.90 Federal agency and other mortgage-backed securities 94,009 3.11 — — 15 3.82 — — 93,994 3.11 Collateralized loan obligations 60 3.97 — — — — 60 3.97 — — Total held-to-maturity debt securities at amortized cost $ 144,990 2.88 % $ — — % $ 32,447 2.05 % $ 13,822 2.58 % $ 98,721 3.19 % (1) Weighted-average yields displayed by maturity bucket are weighted based on amortized cost and predominantly represent contractual coupon rates. Table 5.6 shows the fair value of held-to-maturity debt securities by contractual maturity. Table 5.6: Held-to-Maturity Debt Securities - Fair Value by Contractual Maturity Remaining contractual maturity Total Within one year After one year through five years After five years through ten years After ten years (in millions) amount Amount Amount Amount Amount March 31, 2019 Held-to-maturity debt securities: Fair value: Securities of U.S. Treasury and federal agencies $ 44,693 — 32,245 12,448 — Securities of U.S. states and political subdivisions 6,250 — 70 1,403 4,777 Federal agency and other mortgage-backed securities 93,696 — 15 — 93,681 Collateralized loan obligations 60 — — 60 — Total held-to-maturity debt securities at fair value $ 144,699 — 32,330 13,911 98,458
AFS and HTM Debt Securities, Realized Gains and Losses	Table 5.7 shows the gross realized gains and losses on sales and OTTI write-downs related to available-for-sale debt securities. Table 5.7: Realized Gains and Losses Quarter ended March 31, (in millions) 2019 2018 Gross realized gains $ 173 21 Gross realized losses (3 ) (10 ) OTTI write-downs (45 ) (10 ) Net realized gains from available-for-sale debt securities $ 125 1
AFS and HTM Debt Securities, Other Than Temporary Impairment	Table 5.8 shows the detail of total OTTI write-downs included in earnings for available-for-sale debt securities. There were no OTTI write-downs on held-to-maturity debt securities during first quarter 2019 and 2018 . Table 5.8: Detail of OTTI Write-downs Quarter ended March 31, (in millions) 2019 2018 Debt securities OTTI write-downs included in earnings: Securities of U.S. states and political subdivisions $ 29 2 Mortgage-backed securities: Residential — 1 Commercial 14 7 Corporate debt securities 2 — Total debt securities OTTI write-downs included in earnings $ 45 10
AFS and HTM Debt Securities Other Than Temporary Impairment Included in Earnings	Table 5.9 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 5.9: OTTI Write-downs Included in Earnings and the Related Changes in OCI Quarter ended March 31, (in millions) 2019 2018 OTTI on debt securities Recorded as part of gross realized losses: Credit-related OTTI $ 16 9 Intent-to-sell OTTI 29 1 Total recorded as part of gross realized losses 45 10 Changes to OCI for losses (reversal of losses) in non-credit-related OTTI (1): Securities of U.S. states and political subdivisions — (2 ) Residential mortgage-backed securities (1 ) (1 ) Commercial mortgage-backed securities 1 10 Total changes to OCI for non-credit-related OTTI — 7 Total OTTI losses recorded on debt securities $ 45 17 (1) Represents amounts recorded to OCI for impairment of debt securities, due to factors other than credit, 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 debt securities due to non-credit factors.
Rollforward of Credit Loss Component Of Credit-Impaired AFS and HTM Debt Securities	Table 5.10 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 5.10: Rollforward of OTTI Credit Loss Quarter ended March 31, (in millions) 2019 2018 Credit loss recognized, beginning of period $ 562 742 Additions: For securities with initial credit impairments 2 — For securities with previous credit impairments 14 9 Total additions 16 9 Reductions: For securities sold, matured, or intended/required to be sold (346 ) (101 ) For recoveries of previous credit impairments (1) — (1 ) Total reductions (346 ) (102 ) Credit loss recognized, end of period $ 232 649 (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 Credi_2

Loans and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans and Allowance for Credit Losses, Loans Outstanding	Table 6.1 presents total loans outstanding by portfolio segment and class of financing receivable. Outstanding balances include a total net reduction of $466 million and $1.3 billion at March 31, 2019 , and December 31, 2018 , respectively, for unearned income, net deferred loan fees, and unamortized discounts and premiums. Table 6.1: Loans Outstanding (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 349,134 350,199 Real estate mortgage 122,113 121,014 Real estate construction 21,857 22,496 Lease financing 19,122 19,696 Total commercial 512,226 513,405 Consumer: Real estate 1-4 family first mortgage 284,545 285,065 Real estate 1-4 family junior lien mortgage 33,099 34,398 Credit card 38,279 39,025 Automobile 44,913 45,069 Other revolving credit and installment 35,187 36,148 Total consumer 436,023 439,705 Total loans $ 948,249 953,110 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 6.2 presents total commercial foreign loans outstanding by class of financing receivable. Table 6.2: Commercial Foreign Loans Outstanding (in millions) Mar 31, Dec 31, Commercial foreign loans: Commercial and industrial $ 63,158 62,564 Real estate mortgage 7,049 6,731 Real estate construction 1,138 1,011 Lease financing 1,167 1,159 Total commercial foreign loans $ 72,512 71,465
Loans and Allowance for Credit Losses, Significant Activity	Table 6.3 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 6.3: Loan Purchases, Sales, and Transfers 2019 2018 (in millions) Commercial Consumer (1) Total Commercial Consumer (1) Total Quarter ended March 31, Purchases $ 329 3 332 256 — 256 Sales (421 ) (179 ) (600 ) (460 ) — (460 ) Transfers (to) from MLHFS/LHFS (3 ) — (3 ) (420 ) (1,553 ) (1,973 ) (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.
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 6.4 . The table excludes the issued standby and commercial letters of credit and temporary advance arrangements described above. Table 6.4: Unfunded Credit Commitments (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 328,156 330,492 Real estate mortgage 7,453 6,984 Real estate construction 15,748 16,400 Total commercial 351,357 353,876 Consumer: Real estate 1-4 family first mortgage 39,915 29,736 Real estate 1-4 family junior lien mortgage 37,854 37,719 Credit card 112,238 109,840 Other revolving credit and installment 27,123 27,530 Total consumer 217,130 204,825 Total unfunded credit commitments $ 568,487 558,701
Loans and Allowance for Credit Losses, Allowance for Credit Losses	Table 6.5 presents the allowance for credit losses, which consists of the allowance for loan losses and the allowance for unfunded credit commitments. Table 6.5: Allowance for Credit Losses Quarter ended March 31, (in millions) 2019 2018 Balance, beginning of period $ 10,707 11,960 Provision for credit losses 845 191 Interest income on certain impaired loans (1) (39 ) (43 ) Loan charge-offs: Commercial: Commercial and industrial (176 ) (164 ) Real estate mortgage (12 ) (2 ) Real estate construction (1 ) — Lease financing (11 ) (17 ) Total commercial (200 ) (183 ) Consumer: Real estate 1-4 family first mortgage (43 ) (41 ) Real estate 1-4 family junior lien mortgage (34 ) (47 ) Credit card (437 ) (405 ) Automobile (187 ) (300 ) Other revolving credit and installment (162 ) (180 ) Total consumer (863 ) (973 ) Total loan charge-offs (1,063 ) (1,156 ) Loan recoveries: Commercial: Commercial and industrial 43 79 Real estate mortgage 6 17 Real estate construction 3 4 Lease financing 3 5 Total commercial 55 105 Consumer: Real estate 1-4 family first mortgage 55 59 Real estate 1-4 family junior lien mortgage 43 55 Credit card 85 73 Automobile 96 92 Other revolving credit and installment 34 31 Total consumer 313 310 Total loan recoveries 368 415 Net loan charge-offs (695 ) (741 ) Other 3 (54 ) Balance, end of period $ 10,821 11,313 Components: Allowance for loan losses $ 9,900 10,373 Allowance for unfunded credit commitments 921 940 Allowance for credit losses $ 10,821 11,313 Net loan charge-offs (annualized) as a percentage of average total loans 0.30 % 0.32 Allowance for loan losses as a percentage of total loans 1.04 1.10 Allowance for credit losses as a percentage of total loans 1.14 1.19 (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 6.6 summarizes the activity in the allowance for credit losses by our commercial and consumer portfolio segments. Table 6.6: Allowance Activity by Portfolio Segment 2019 2018 (in millions) Commercial Consumer Total Commercial Consumer Total Quarter ended March 31, Balance, beginning of period $ 6,417 4,290 10,707 6,632 5,328 11,960 Provision for credit losses 164 681 845 169 22 191 Interest income on certain impaired loans (11 ) (28 ) (39 ) (11 ) (32 ) (43 ) Loan charge-offs (200 ) (863 ) (1,063 ) (183 ) (973 ) (1,156 ) Loan recoveries 55 313 368 105 310 415 Net loan charge-offs (145 ) (550 ) (695 ) (78 ) (663 ) (741 ) Other 3 — 3 (4 ) (50 ) (54 ) Balance, end of period $ 6,428 4,393 10,821 6,708 4,605 11,313
Loans and Allowance for Credit Losses, by Impairment Methodology	Table 6.7 disaggregates our allowance for credit losses and recorded investment in loans by impairment methodology. Table 6.7: Allowance by Impairment Methodology Allowance for credit losses Recorded investment in loans (in millions) Commercial Consumer Total Commercial Consumer Total March 31, 2019 Collectively evaluated (1) $ 5,863 3,448 9,311 508,379 420,010 928,389 Individually evaluated (2) 565 945 1,510 3,847 12,813 16,660 PCI (3) — — — — 3,200 3,200 Total $ 6,428 4,393 10,821 512,226 436,023 948,249 December 31, 2018 Collectively evaluated (1) $ 5,903 3,361 9,264 510,180 421,574 931,754 Individually evaluated (2) 514 929 1,443 3,221 13,126 16,347 PCI (3) — — — 4 5,005 5,009 Total $ 6,417 4,290 10,707 513,405 439,705 953,110 (1) Represents loans collectively evaluated for impairment in accordance with Accounting Standards Codification (ASC) 450-20, Loss Contingencies (formerly Statement of Financial Accounting Standards (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 6.8 provides a breakdown of outstanding commercial loans by risk category. Of the $15.6 billion in criticized commercial and industrial loans and $5.0 billion in criticized commercial real estate (CRE) loans at March 31, 2019 , $2.0 billion and $735 million , respectively, have been placed on nonaccrual status and written down to net realizable collateral value. Table 6.8: Commercial Loans by Risk Category (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2019 By risk category: Pass $ 333,502 117,353 21,612 18,138 490,605 Criticized 15,632 4,760 245 984 21,621 Total commercial loans (excluding PCI) 349,134 122,113 21,857 19,122 512,226 Total commercial PCI loans (carrying value) — — — — — Total commercial loans $ 349,134 122,113 21,857 19,122 512,226 December 31, 2018 By risk category: Pass $ 335,412 116,514 22,207 18,671 492,804 Criticized 14,783 4,500 289 1,025 20,597 Total commercial loans (excluding PCI) 350,195 121,014 22,496 19,696 513,401 Total commercial PCI loans (carrying value) 4 — — — 4 Total commercial loans $ 350,199 121,014 22,496 19,696 513,405
Loans and Allowance for Credit Losses, Loans by Delinquency Status, Commercial	Table 6.9 provides past due information for commercial loans, which we monitor as part of our credit risk management practices. Table 6.9: Commercial Loans by Delinquency Status (in millions) Commercial and industrial Real estate mortgage Real estate construction Lease financing Total March 31, 2019 By delinquency status: Current-29 days past due (DPD) and still accruing $ 346,696 121,196 21,591 18,871 508,354 30-89 DPD and still accruing 410 198 225 175 1,008 90+ DPD and still accruing 42 20 5 — 67 Nonaccrual loans 1,986 699 36 76 2,797 Total commercial loans (excluding PCI) 349,134 122,113 21,857 19,122 512,226 Total commercial PCI loans (carrying value) — — — — — Total commercial loans $ 349,134 122,113 21,857 19,122 512,226 December 31, 2018 By delinquency status: Current-29 DPD and still accruing $ 348,158 120,176 22,411 19,443 510,188 30-89 DPD and still accruing 508 207 53 163 931 90+ DPD and still accruing 43 51 — — 94 Nonaccrual loans 1,486 580 32 90 2,188 Total commercial loans (excluding PCI) 350,195 121,014 22,496 19,696 513,401 Total commercial PCI loans (carrying value) 4 — — — 4 Total commercial loans $ 350,199 121,014 22,496 19,696 513,405
Loans and Allowance for Credit Losses, Loans by Delinquency Status, Consumer	Table 6.10 provides the outstanding balances of our consumer portfolio by delinquency status. Table 6.10: Consumer Loans by Delinquency Status (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Credit card Automobile Other revolving credit and installment Total March 31, 2019 By delinquency status: Current-29 DPD $ 266,098 32,373 37,334 43,836 34,869 414,510 30-59 DPD 1,441 243 251 777 127 2,839 60-89 DPD 494 118 193 222 78 1,105 90-119 DPD 231 70 174 74 74 623 120-179 DPD 223 78 327 4 24 656 180+ DPD 683 201 — — 15 899 Government insured/guaranteed loans (1) 11,966 — — — — 11,966 Loans held at fair value 225 — — — — 225 Total consumer loans (excluding PCI) 281,361 33,083 38,279 44,913 35,187 432,823 Total consumer PCI loans (carrying value) (2) 3,184 16 — — — 3,200 Total consumer loans $ 284,545 33,099 38,279 44,913 35,187 436,023 December 31, 2018 By delinquency status: Current-29 DPD $ 263,881 33,644 38,008 43,604 35,794 414,931 30-59 DPD 1,411 247 292 1,040 140 3,130 60-89 DPD 549 126 212 314 87 1,288 90-119 DPD 257 74 192 109 80 712 120-179 DPD 225 77 320 2 27 651 180+ DPD 822 213 1 — 20 1,056 Government insured/guaranteed loans (1) 12,688 — — — — 12,688 Loans held at fair value 244 — — — — 244 Total consumer loans (excluding PCI) 280,077 34,381 39,025 45,069 36,148 434,700 Total consumer PCI loans (carrying value) (2) 4,988 17 — — — 5,005 Total consumer loans $ 285,065 34,398 39,025 45,069 36,148 439,705 (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 $7.0 billion at March 31, 2019 , compared with $7.7 billion at December 31, 2018 . (2) 19% of the adjusted unpaid principal balance for consumer PCI loans are 30+ DPD at March 31, 2019 , compared with 18% at December 31, 2018 .
Loans and Allowance for Credit Losses, Loans by FICO Score, Consumer	Table 6.11 provides a breakdown of our consumer portfolio by FICO. 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 $8.7 billion at March 31, 2019 , and $8.9 billion at December 31, 2018 . Table 6.11: Consumer Loans by FICO (in millions) Real estate 1-4 family first mortgage Real estate 1-4 family junior lien mortgage Credit card Automobile Other revolving credit and installment Total March 31, 2019 By FICO: < 600 $ 4,106 1,410 3,150 6,907 685 16,258 600-639 2,843 979 2,615 4,412 690 11,539 640-679 5,813 1,829 6,173 6,209 1,752 21,776 680-719 13,406 3,775 9,206 7,279 3,265 36,931 720-759 26,943 5,130 7,769 6,795 4,235 50,872 760-799 56,626 5,967 5,082 5,958 5,261 78,894 800+ 154,956 12,724 3,759 7,239 8,242 186,920 No FICO available 4,477 1,269 525 114 2,371 8,756 FICO not required — — — — 8,686 8,686 Government insured/guaranteed loans (1) 12,191 — — — — 12,191 Total consumer loans (excluding PCI) 281,361 33,083 38,279 44,913 35,187 432,823 Total consumer PCI loans (carrying value) (2) 3,184 16 — — — 3,200 Total consumer loans $ 284,545 33,099 38,279 44,913 35,187 436,023 December 31, 2018 By FICO: < 600 $ 4,273 1,454 3,292 7,071 697 16,787 600-639 2,974 994 2,777 4,431 725 11,901 640-679 5,810 1,898 6,464 6,225 1,822 22,219 680-719 13,568 3,908 9,445 7,354 3,384 37,659 720-759 27,258 5,323 7,949 6,853 4,395 51,778 760-799 57,193 6,315 5,227 5,947 5,322 80,004 800+ 151,465 13,190 3,794 7,099 8,411 183,959 No FICO available 4,604 1,299 77 89 2,507 8,576 FICO not required — — — — 8,885 8,885 Government insured/guaranteed loans (1) 12,932 — — — — 12,932 Total consumer loans (excluding PCI) 280,077 34,381 39,025 45,069 36,148 434,700 Total consumer PCI loans (carrying value) (2) 4,988 17 — — — 5,005 Total consumer loans $ 285,065 34,398 39,025 45,069 36,148 439,705 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA. (2) 43% of the adjusted unpaid principal balance for consumer PCI loans have FICO scores less than 680 and 13% where no FICO is available to us at March 31, 2019 , compared with 45% and 15% , respectively, at December 31, 2018 .
Loans and Allowance for Credit Losses, Loans by Loan to Value Ratio, Consumer	Table 6.12 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 6.12: Consumer Loans by LTV/CLTV March 31, 2019 December 31, 2018 (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% $ 145,143 15,156 160,299 147,666 15,753 163,419 60.01-80% 105,991 10,784 116,775 104,477 11,183 115,660 80.01-100% 15,477 4,725 20,202 12,372 4,874 17,246 100.01-120% (1) 1,184 1,482 2,666 1,211 1,596 2,807 > 120% (1) 472 550 1,022 484 578 1,062 No LTV/CLTV available 903 386 1,289 935 397 1,332 Government insured/guaranteed loans (2) 12,191 — 12,191 12,932 — 12,932 Total consumer loans (excluding PCI) 281,361 33,083 314,444 280,077 34,381 314,458 Total consumer PCI loans (carrying value) (3) 3,184 16 3,200 4,988 17 5,005 Total consumer loans $ 284,545 33,099 317,644 285,065 34,398 319,463 (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. (3) 10% of the adjusted unpaid principal balance for consumer PCI loans have LTV/CLTV amounts greater than 80% at both March 31, 2019 and December 31, 2018 .
Loans and Allowance for Credit Losses, Nonaccrual Loans	Table 6.13 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 6.13: Nonaccrual Loans (in millions) Mar 31, Dec 31, Commercial: Commercial and industrial $ 1,986 1,486 Real estate mortgage 699 580 Real estate construction 36 32 Lease financing 76 90 Total commercial 2,797 2,188 Consumer: Real estate 1-4 family first mortgage 3,026 3,183 Real estate 1-4 family junior lien mortgage 916 945 Automobile 116 130 Other revolving credit and installment 50 50 Total consumer 4,108 4,308 Total nonaccrual loans (excluding PCI) $ 6,905 6,496
Loans and Allowance for Credit Losses, 90 days or More Past Due and Still Accruing Loans	Table 6.14 shows non-PCI loans 90 days or more past due and still accruing by class for loans not government insured/guaranteed. Table 6.14: Loans 90 Days or More Past Due and Still Accruing (1) (in millions) Mar 31, 2019 Dec 31, 2018 Total (excluding PCI): $ 7,870 8,704 Less: FHA insured/VA guaranteed (1) 6,996 7,725 Total, not government insured/guaranteed $ 874 979 By segment and class, not government insured/guaranteed: Commercial: Commercial and industrial $ 42 43 Real estate mortgage 20 51 Real estate construction 5 — Total commercial 67 94 Consumer: Real estate 1-4 family first mortgage 117 124 Real estate 1-4 family junior lien mortgage 28 32 Credit card 502 513 Automobile 68 114 Other revolving credit and installment 92 102 Total consumer 807 885 Total, not government insured/guaranteed $ 874 979 (1) Represents loans whose repayments are predominantly insured by the FHA or guaranteed by the VA.
Loans and Allowance for Credit Losses, Impaired Loans	Table 6.15 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 6.15 includes trial modifications that totaled $136 million at March 31, 2019 , and $149 million at December 31, 2018 . For additional information on our impaired loans and allowance for credit losses, see Note 1 (Summary of Significant Accounting Policies) in our 2018 Form 10-K. Table 6.15: Impaired Loans Summary Recorded investment (in millions) Unpaid principal balance (1) Impaired loans Impaired loans with related allowance for credit losses Related allowance for credit losses March 31, 2019 Commercial: Commercial and industrial $ 3,493 2,569 2,271 364 Real estate mortgage 1,310 1,126 1,071 161 Real estate construction 87 56 56 10 Lease financing 119 96 96 30 Total commercial 5,009 3,847 3,494 565 Consumer: Real estate 1-4 family first mortgage 11,953 10,440 4,354 526 Real estate 1-4 family junior lien mortgage 1,843 1,658 1,093 181 Credit card 474 473 473 188 Automobile 145 85 42 8 Other revolving credit and installment 164 157 138 42 Total consumer (2) 14,579 12,813 6,100 945 Total impaired loans (excluding PCI) $ 19,588 16,660 9,594 1,510 December 31, 2018 Commercial: Commercial and industrial $ 3,057 2,030 1,730 319 Real estate mortgage 1,228 1,032 1,009 154 Real estate construction 74 47 46 9 Lease financing 146 112 112 32 Total commercial 4,505 3,221 2,897 514 Consumer: Real estate 1-4 family first mortgage 12,309 10,738 4,420 525 Real estate 1-4 family junior lien mortgage 1,886 1,694 1,133 183 Credit card 449 449 449 172 Automobile 153 89 43 8 Other revolving credit and installment 162 156 136 41 Total consumer (2) 14,959 13,126 6,181 929 Total impaired loans (excluding PCI) $ 19,464 16,347 9,078 1,443 (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 $1.3 billion at both March 31, 2019 and December 31, 2018, 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 6.16 provides the average recorded investment in impaired loans and the amount of interest income recognized on impaired loans by portfolio segment and class. Table 6.16: Average Recorded Investment in Impaired Loans Quarter ended March 31, 2019 2018 (in millions) Average recorded investment Recognized interest income Average recorded investment Recognized interest income Commercial: Commercial and industrial $ 2,346 23 2,404 36 Real estate mortgage 1,055 15 1,244 28 Real estate construction 52 2 58 1 Lease financing 108 — 129 — Total commercial 3,561 40 3,835 65 Consumer: Real estate 1-4 family first mortgage 10,624 153 12,073 172 Real estate 1-4 family junior lien mortgage 1,679 26 1,889 29 Credit card 461 15 370 10 Automobile 87 4 85 3 Other revolving credit and installment 156 4 133 2 Total consumer 13,007 202 14,550 216 Total impaired loans (excluding PCI) $ 16,568 242 18,385 281 Interest income: Cash basis of accounting $ 59 81 Other (1) 183 200 Total interest income $ 242 281 (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 6.17 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 6.17: TDR Modifications Primary modification type (1) Financial effects of modifications (in millions) Principal (2) Interest rate reduction Other concessions (3) Total Charge- offs (4) Weighted average interest rate reduction Recorded investment related to interest rate reduction (5) Quarter ended March 31, 2019 Commercial: Commercial and industrial $ — 11 554 565 13 0.68 % $ 11 Real estate mortgage — 2 73 75 — 0.95 2 Real estate construction — — 3 3 — — — Lease financing — — — — — — — Total commercial — 13 630 643 13 0.73 13 Consumer: Real estate 1-4 family first mortgage 35 3 294 332 1 1.95 19 Real estate 1-4 family junior lien mortgage 2 11 25 38 1 2.29 12 Credit card — 97 — 97 — 13.20 97 Automobile 2 1 12 15 6 5.38 1 Other revolving credit and installment — 11 3 14 — 7.58 11 Trial modifications (6) — — — — — — — Total consumer 39 123 334 496 8 10.27 140 Total $ 39 136 964 1,139 21 9.44 % $ 153 Quarter ended March 31, 2018 Commercial: Commercial and industrial $ — 9 488 497 6 1.07 % $ 9 Real estate mortgage — 6 98 104 — 1.24 6 Real estate construction — — 3 3 — — — Lease financing — — 39 39 — — — Total commercial — 15 628 643 6 1.15 15 Consumer: Real estate 1-4 family first mortgage 46 10 306 362 1 2.40 35 Real estate 1-4 family junior lien mortgage 1 8 28 37 1 2.22 9 Credit card — 86 — 86 — 11.32 86 Automobile 1 4 14 19 9 6.48 4 Other revolving credit and installment — 15 2 17 — 7.94 15 Trial modifications (6) — — 15 15 — — — Total consumer 48 123 365 536 11 8.20 149 Total $ 48 138 993 1,179 17 7.55 % $ 164 (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 $360 million and $503 million for the quarters ended March 31, 2019 and 2018, 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 $3 million for both of the quarters ended March 31, 2019 and 2018. (5) Reflects the effect of reduced interest rates on loans with an interest rate concession as one of its 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 6.18 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 6.18: Defaulted TDRs Recorded investment of defaults Quarter ended March 31, (in millions) 2019 2018 Commercial: Commercial and industrial $ 23 86 Real estate mortgage 28 26 Real estate construction 3 — Total commercial 54 112 Consumer: Real estate 1-4 family first mortgage 11 18 Real estate 1-4 family junior lien mortgage 5 5 Credit card 21 13 Automobile 3 3 Other revolving credit and installment 2 1 Total consumer 42 40 Total $ 96 152
Loans and Allowance for Credit Losses, Purchased Credit Impaired Loans, Loans Outstanding	Table 6.19 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 6.19: PCI Loans (in millions) Mar 31, Dec 31, Total commercial $ — 4 Consumer: Real estate 1-4 family first mortgage 3,184 4,988 Real estate 1-4 family junior lien mortgage 16 17 Total consumer 3,200 5,005 Total PCI loans (carrying value) $ 3,200 5,009 Total PCI loans (unpaid principal balance) $ 4,765 7,348

Leasing Activity (Tables)

Leasing Activity (Tables)	3 Months Ended
	Mar. 31, 2019
Lessor Disclosure [Abstract]
Leasing Revenue	Table 7.1: Leasing Revenue (in millions) Quarter ended March 31, 2019 Interest income on lease financing $ 223 Variable revenues on lease financing 24 Total lease financing revenue 247 Fixed revenues on operating leases 373 Variable revenues on operating leases 18 Total operating lease revenue 391 Other lease-related revenues (1) 28 Total lease revenue $ 666 (1) Predominantly includes net gains on disposition of lease assets
Investment in Lease Financing	Table 7.2: Investment in Lease Financing (in millions) Mar 31, 2019 Lease receivables $ 17,640 Residual asset values 4,169 Unearned income (2,687 ) Lease financing $ 19,122
Maturities of Lease Receivables	Table 7.3 presents future lease payments owed by our lessees. Table 7.3: Maturities of Lease Receivables March 31, 2019 (in millions) Direct financing and sales- type leases Operating leases Remainder of 2019 $ 4,143 953 2020 4,866 862 2021 3,698 568 2022 1,857 385 2023 1,035 252 Thereafter 2,041 581 Total lease receivables $ 17,640 3,601
Lessee Disclosure [Abstract]
Operating Lease Right of Use (ROU) Assets and Lease Liabilities	Table 7.4 presents balances for our operating leases. Table 7.4: Operating Lease Right of Use (ROU) Assets and Lease Liabilities (in millions) Mar 31, 2019 ROU assets $ 4,869 Lease liabilities 5,405
Lease Costs	Table 7.5 provides the composition of our lease costs. Table 7.5: Lease Costs (in millions) Quarter ended March 31, 2019 Fixed lease expense - operating leases 297 Variable lease expense 73 Other (1) (8 ) Total lease costs $ 362 (1) Predominantly includes sublease rental income and gains recognized from sale leaseback transactions
Lease Payments on Operating Leases Prior to Adoption of ASU 2016-02 - Leases	Table 7.6: Lease Payments on Operating Leases Prior to Adoption of ASU 2016-02 - Leases (in millions) December 31, 2018 2019 $ 1,174 2020 1,056 2021 880 2022 713 2023 577 Thereafter 1,654 Total $ 6,054
Lease Payments on Operating Leases Subsequent to Adoption of ASU 2016-02 - Leases	Table 7.7: Lease Payments on Operating Leases Subsequent to Adoption of ASU 2016-02 - Leases (in millions, except for weighted averages) March 31, 2019 Remainder of 2019 $ 777 2020 1,123 2021 942 2022 770 2023 628 Thereafter 1,936 Total lease payments 6,176 Less: imputed interest 771 Total operating lease liabilities $ 5,405 Weighted average remaining lease term (in years) 7.3 Weighted average discount rate 3.2 %

Equity Securities (Tables)

Equity Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Equity Securities [Abstract]
Equity Securities	Table 8.1 provides a summary of our equity securities by business purpose and accounting method, including equity securities with readily determinable fair values (marketable) and those without readily determinable fair values (nonmarketable). Table 8.1: Equity Securities Mar 31, Dec 31, (in millions) 2019 2018 Held for trading at fair value: Marketable equity securities $ 20,933 19,449 Not held for trading: Fair value: Marketable equity securities (1) 5,135 4,513 Nonmarketable equity securities (2) 6,518 5,594 Total equity securities at fair value 11,653 10,107 Equity method: Low-income housing tax credit investments 10,925 10,999 Private equity 3,890 3,832 Tax-advantaged renewable energy 3,041 3,073 New market tax credit and other 305 311 Total equity method 18,161 18,215 Other: Federal Reserve Bank stock and other at cost (3) 5,732 5,643 Private equity (4) 1,961 1,734 Total equity securities not held for trading 37,507 35,699 Total equity securities $ 58,440 55,148 (1) Includes $3.5 billion and $3.2 billion at March 31, 2019 , and December 31, 2018 , respectively, related to securities held as economic hedges of our deferred compensation plan obligations. (2) Includes $6.4 billion and $5.5 billion at March 31, 2019 , and December 31, 2018 , respectively, related to investments for which we elected the fair value option. See Note 16 (Fair Value of Assets and Liabilities) for additional information. (3) Includes $5.7 billion and $5.6 billion at March 31, 2019 and December 31, 2018 , respectively, related to investments in Federal Reserve Bank and Federal Home Loan Bank stock. (4) Represents nonmarketable equity securities for which we have elected to account for the security under the measurement alternative.
Net Gains (Losses) from Equity Securities Not Held for Trading	Table 8.2 provides a summary of the net gains and losses for equity securities not held for trading. Gains and losses for securities held for trading are reported in net gains from trading activities. Table 8.2: Net Gains (Losses) from Equity Securities Not Held for Trading Quarter ended March 31, (in millions) 2019 2018 Net gains (losses) from equity securities carried at fair value: Marketable equity securities $ 377 8 Nonmarketable equity securities 936 109 Total equity securities carried at fair value 1,313 117 Net gains (losses) from nonmarketable equity securities not carried at fair value: Impairment write-downs (36 ) (20 ) Net unrealized gains related to measurement alternative observable transactions 185 228 Net realized gains on sale 237 498 All other — 18 Total nonmarketable equity securities not carried at fair value 386 724 Net losses from economic hedge derivatives (1) (885 ) (58 ) Total net gains from equity securities $ 814 783 (1) Includes net gains (losses) on derivatives not designated as hedging instruments.
Gains (Losses) from Measurement Alternative Equity Securities	Table 8.3 provides additional information about the impairment write-downs and observable price adjustments related to nonmarketable equity securities accounted for under the measurement alternative. Gains and losses related to these adjustments are also included in Table 8.2. Table 8.3: Net Gains (Losses) from Measurement Alternative Equity Securities Quarter ended March 31, (in millions) 2019 2018 Net gains (losses) recognized in earnings during the period: Gross unrealized gains due to observable price changes $ 185 228 Impairment write-downs (22 ) (7 ) Realized net gains from sale 23 75 Total net gains recognized during the period $ 186 296 Table 8.4 presents cumulative carrying value adjustments to nonmarketable equity securities accounted for under the measurement alternative that were still held as of the balance sheet date. Table 8.4: Measurement Alternative Cumulative Gains (Losses) Mar 31, Dec 31, (in millions) 2019 2018 Cumulative gains (losses): Gross unrealized gains due to observable price changes $ 577 415 Gross unrealized losses due to observable price changes (25 ) (25 ) Impairment write-downs (55 ) (33 )

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Other Assets [Abstract]
Components of Other Assets	Table 9.1 presents the components of other assets. Table 9.1: Other Assets (in millions) Mar 31, Dec 31, Corporate/bank-owned life insurance $ 19,842 19,751 Accounts receivable (1) 32,405 34,281 Interest receivable 6,277 6,084 Customer relationship and other amortized intangibles 508 545 Foreclosed assets: Residential real estate: Government insured/guaranteed (1) 75 88 Non-government insured/guaranteed 229 229 Non-residential real estate 132 134 Operating lease assets (lessor) 8,793 9,036 Operating lease ROU assets (lessee) (2) 4,869 — Due from customers on acceptances 243 258 Other 9,294 9,444 Total other assets $ 82,667 79,850 (1) 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 2018 Form 10-K. (2) We recognized operating lease right of use (ROU) assets effective January 1, 2019, in connection with the adoption of ASU 2016-02 – Leases. For more information, see Note 1 (Summary of Significant Accounting Policies) in this Report.

Securitizations and Variable _2

Securitizations and Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2019
Securitizations and Variable Interest Entities [Abstract]
Balance Sheet Transactions With VIEs	Table 10.1 provides the classifications of assets and liabilities in our balance sheet for our transactions with VIEs. Table 10.1: Balance Sheet Transactions with VIEs (in millions) VIEs that we do not consolidate VIEs that we consolidate Transfers that we account for as secured borrowings Total March 31, 2019 Cash and due from banks $ — 16 — 16 Interest-earning deposits with banks — 8 — 8 Debt securities: Trading debt securities 1,848 55 200 2,103 Available-for-sale debt securities (1) 2,063 — 248 2,311 Held-to-maturity debt securities 524 — — 524 Loans 1,398 14,368 91 15,857 Mortgage servicing rights 13,515 — — 13,515 Derivative assets 74 — — 74 Equity securities 10,973 112 — 11,085 Other assets — 252 6 258 Total assets 30,395 14,811 545 45,751 Short-term borrowings — — 427 427 Derivative liabilities 6 — (2) — 6 Accrued expenses and other liabilities 198 205 (2) 7 410 Long-term debt 3,750 775 (2) 90 4,615 Total liabilities 3,954 980 524 5,458 Noncontrolling interests — 31 — 31 Net assets $ 26,441 13,800 21 40,262 December 31, 2018 Cash and due from banks $ — 139 — 139 Interest-earning deposits with banks — 8 — 8 Debt securities: Trading debt securities 2,110 45 200 2,355 Available-for-sale debt securities (1) 2,686 — 317 3,003 Held-to-maturity debt securities 510 — — 510 Loans 1,433 13,564 94 15,091 Mortgage servicing rights 14,761 — — 14,761 Derivative assets 53 — — 53 Equity securities 11,041 85 — 11,126 Other assets — 221 6 227 Total assets 32,594 14,062 617 47,273 Short-term borrowings — — 493 493 Derivative liabilities 26 — (2) — 26 Accrued expenses and other liabilities 231 191 (2) 8 430 Long-term debt 3,870 816 (2) 93 4,779 Total liabilities 4,127 1,007 594 5,728 Noncontrolling interests — 34 — 34 Net assets $ 28,467 13,021 23 41,511 (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 10.2 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 10.2: Unconsolidated VIEs Carrying value – asset (liability) (in millions) Total VIE assets Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Net assets March 31, 2019 Residential mortgage loan securitizations: Conforming (2) $ 1,145,791 2,146 12,574 — (137 ) 14,583 Other/nonconforming 9,582 27 60 — — 87 Commercial mortgage securitizations 153,770 2,193 881 17 (41 ) 3,050 Collateralized debt obligations: Debt securities 641 — — 4 (20 ) (16 ) Asset-based finance structures 283 173 — — — 173 Tax credit structures 36,135 12,009 — — (3,750 ) 8,259 Collateralized loan obligations 203 4 — — — 4 Investment funds 204 47 — — — 47 Other (3) 1,648 207 — 47 — 254 Total $ 1,348,257 16,806 13,515 68 (3,948 ) 26,441 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,146 12,574 — 1,101 15,821 Other/nonconforming 27 60 — — 87 Commercial mortgage securitizations 2,193 881 27 11,795 14,896 Collateralized debt obligations: Debt securities — — 4 20 24 Asset-based finance structures 173 — — 72 245 Tax credit structures 12,009 — — 1,426 13,435 Collateralized loan obligations 4 — — — 4 Investment funds 47 — — — 47 Other (3) 207 — 48 157 412 Total $ 16,806 13,515 79 14,571 44,971 (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, 2018 Residential mortgage loan securitizations: Conforming (2) $ 1,172,833 2,377 13,811 — (171 ) 16,017 Other/nonconforming 10,596 453 57 — — 510 Commercial mortgage securitizations 153,350 2,409 893 (22 ) (40 ) 3,240 Collateralized debt obligations: Debt securities 659 — — 5 (20 ) (15 ) Asset-based finance structures 304 205 — — — 205 Tax credit structures 35,185 12,087 — — (3,870 ) 8,217 Collateralized loan obligations 2 — — — — — Investment funds 185 42 — — — 42 Other (3) 1,688 207 — 44 — 251 Total $ 1,374,802 17,780 14,761 27 (4,101 ) 28,467 Maximum exposure to loss Debt and equity interests (1) Servicing assets Derivatives Other commitments and guarantees Total exposure Residential mortgage loan securitizations: Conforming $ 2,377 13,811 — 1,183 17,371 Other/nonconforming 453 57 — — 510 Commercial mortgage securitizations 2,409 893 28 11,563 14,893 Collateralized debt obligations: Debt securities — — 5 20 25 Asset-based finance structures 205 — — 71 276 Tax credit structures 12,087 — — 1,420 13,507 Collateralized loan obligations — — — — — Investment funds 42 — — — 42 Other (3) 207 — 45 158 410 Total $ 17,780 14,761 78 14,415 47,034 (1) Includes total equity interests of $11.0 billion at both March 31, 2019 , and December 31, 2018 . 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 $578 million and $1.2 billion at March 31, 2019 , and December 31, 2018 , 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) Includes structured financing and credit-linked note structures.
Cash Flows from Sales and Securitization Activity	Table 10.3 presents the cash flows for our transfers accounted for as sales in which we have continuing involvement with the transferred financial assets. Table 10.3: Cash Flows From Sales and Securitization Activity Mortgage loans (in millions) 2019 2018 Quarter ended March 31, Proceeds from securitizations and whole loan sales $ 36,507 50,587 Fees from servicing rights retained 780 845 Cash flows from other interests held (1) 111 185 Repurchases of assets/loss reimbursements (2): Non-agency securitizations and whole loan transactions — 1 Agency securitizations (3) 17 33 Servicing advances, net of repayments (39 ) (36 ) (1) Cash flows from other interests held include principal and interest payments received on retained bonds and excess cash flows received on interest-only strips. (2) Consists of cash paid to repurchase loans from investors and cash paid to investors to reimburse them for losses on individual loans that are already liquidated. (3) Represent loans repurchased from GNMA, FNMA, and FHLMC under representation and warranty provisions included in our loan sales contracts. First quarter 2019 and 2018 exclude $ 1.9 billion and $2.9 billion , respectively, in delinquent insured/guaranteed loans that we service and have exercised our option to purchase out of GNMA pools. These loans are predominantly insured by the FHA or guaranteed by the VA.
Residential Mortgage Servicing Rights	Table 10.4 presents the key weighted-average assumptions we used to measure residential mortgage servicing rights at the date of securitization. Table 10.4: Residential Mortgage Servicing Rights Residential mortgage servicing rights 2019 2018 Quarter ended March 31, Prepayment speed (1) 13.5 % 9.6 Discount rate 8.1 7.3 Cost to service ($ per loan) (2) $ 94 117 (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 10.5 provides key economic assumptions and the sensitivity of the current fair value of residential mortgage servicing rights and other interests held related to unconsolidated VIEs 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 10.5: Retained Interests from Unconsolidated VIEs Other interests held Residential mortgage servicing rights (1) Interest-only strips Commercial (2) ($ in millions, except cost to service amounts) Subordinated bonds Senior bonds Fair value of interests held at March 31, 2019 $ 13,336 15 679 295 Expected weighted-average life (in years) 5.9 3.5 6.9 5.5 Key economic assumptions: Prepayment speed assumption (3) 11.3 % 18.2 Decrease in fair value from: 10% adverse change $ 542 1 25% adverse change 1,280 1 Discount rate assumption 7.6 % 14.2 4.1 3.4 Decrease in fair value from: 100 basis point increase $ 548 — 38 14 200 basis point increase 1,049 — 74 26 Cost to service assumption ($ per loan) 103 Decrease in fair value from: 10% adverse change 290 25% adverse change 723 Credit loss assumption 4.5 % — Decrease in fair value from: 10% higher losses $ 2 — 25% higher losses 5 — Fair value of interests held at December 31, 2018 $ 14,649 16 668 309 Expected weighted-average life (in years) 6.5 3.6 7.0 5.7 Key economic assumptions: Prepayment speed assumption (3) 9.9 % 17.7 Decrease in fair value from: 10% adverse change $ 530 1 25% adverse change 1,301 1 Discount rate assumption 8.1 % 14.5 4.3 3.7 Decrease in fair value from: 100 basis point increase $ 615 — 37 14 200 basis point increase 1,176 1 72 28 Cost to service assumption ($ per loan) 106 Decrease in fair value from: 10% adverse change 316 25% adverse change 787 Credit loss assumption 5.1 % — Decrease in fair value from: 10% higher losses $ 2 — 25% higher losses 5 — (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 10.6 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 10.6: Off-Balance Sheet Loans Sold or Securitized Net charge-offs Total loans Delinquent loans and foreclosed assets (1) Quarter ended March 31, (in millions) Mar 31, 2019 Dec 31, 2018 Mar 31, 2019 Dec 31, 2018 2019 2018 Commercial: Real estate mortgage $ 106,087 105,173 976 1,008 79 10 Total commercial 106,087 105,173 976 1,008 79 10 Consumer: Real estate 1-4 family first mortgage 1,061,759 1,097,128 7,988 8,947 67 116 Total consumer 1,061,759 1,097,128 7,988 8,947 67 116 Total off-balance sheet sold or securitized loans (2) $ 1,167,846 1,202,301 8,964 9,955 146 126 (1) Includes $550 million and $675 million of commercial foreclosed assets and $575 million and $582 million of consumer foreclosed assets at March 31, 2019 , and December 31, 2018 , respectively. (2) At March 31, 2019 , and December 31, 2018 , the table includes total loans of $1.1 trillion at both dates, delinquent loans of $5.8 billion and $6.4 billion , and foreclosed assets of $451 million and $442 million , 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 10.7 presents a summary of financial assets and liabilities for asset transfers accounted for as secured borrowings and involvements with consolidated VIEs. Carrying values of “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 10.7: Transactions with Consolidated VIEs and Secured Borrowings Carrying value (in millions) Total VIE assets Assets Liabilities Noncontrolling interests Net assets March 31, 2019 Secured borrowings: Municipal tender option bond securitizations $ 562 454 (434 ) — 20 Residential mortgage securitizations 91 91 (90 ) — 1 Total secured borrowings 653 545 (524 ) — 21 Consolidated VIEs: Commercial and industrial loans and leases 8,643 8,629 (491 ) (12 ) 8,126 Nonconforming residential mortgage loan securitizations 1,556 1,362 (479 ) — 883 Commercial real estate loans 4,622 4,622 — — 4,622 Investment funds 185 185 (7 ) (15 ) 163 Other 13 13 (3 ) (4 ) 6 Total consolidated VIEs 15,019 14,811 (980 ) (31 ) 13,800 Total secured borrowings and consolidated VIEs $ 15,672 15,356 (1,504 ) (31 ) 13,821 December 31, 2018 Secured borrowings: Municipal tender option bond securitizations $ 627 523 (501 ) — 22 Residential mortgage securitizations 95 94 (93 ) — 1 Total secured borrowings 722 617 (594 ) — 23 Consolidated VIEs: Commercial and industrial loans and leases 8,215 8,204 (477 ) (14 ) 7,713 Nonconforming residential mortgage loan securitizations 1,947 1,732 (521 ) — 1,211 Commercial real estate loans 3,957 3,957 — — 3,957 Investment funds 155 155 (5 ) (15 ) 135 Other 14 14 (4 ) (5 ) 5 Total consolidated VIEs 14,288 14,062 (1,007 ) (34 ) 13,021 Total secured borrowings and consolidated VIEs $ 15,010 14,679 (1,601 ) (34 ) 13,044

Mortgage Banking Activities (Ta

Mortgage Banking Activities (Tables)	3 Months Ended
	Mar. 31, 2019
Mortgage Banking Activities [Abstract]
Analysis of Changes in Fair Value MSRs	Table 11.1 presents the changes in MSRs measured using the fair value method. Table 11.1: Analysis of Changes in Fair Value MSRs Quarter ended March 31, (in millions) 2019 2018 Fair value, beginning of period $ 14,649 13,625 Servicing from securitizations or asset transfers (1) 341 573 Sales and other (2) (281 ) (4 ) Net additions 60 569 Changes in fair value: Due to changes in valuation model inputs or assumptions: Mortgage interest rates (3) (940 ) 1,253 Servicing and foreclosure costs (4) 12 34 Discount rates (5) 100 — Prepayment estimates and other (6) (63 ) 43 Net changes in valuation model inputs or assumptions (891 ) 1,330 Changes due to collection/realization of expected cash flows over time (482 ) (483 ) Total changes in fair value (1,373 ) 847 Fair value, end of period $ 13,336 15,041 (1) Includes impacts associated with exercising our right to repurchase delinquent loans from GNMA loan securitization pools. Total reported MSRs may increase upon repurchase due to servicing liabilities associated with these loans. (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 or portfolios with servicing liabilities. (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) Reflects discount rate assumption change, excluding portion attributable to changes in mortgage interest rates. (6) 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 11.2 presents the changes in amortized MSRs. Table 11.2: Analysis of Changes in Amortized MSRs Quarter ended March 31, (in millions) 2019 2018 Balance, beginning of period $ 1,443 1,424 Purchases 24 18 Servicing from securitizations or asset transfers 26 34 Amortization (66 ) (65 ) Balance, end of period (1) $ 1,427 1,411 Fair value of amortized MSRs: Beginning of period $ 2,288 2,025 End of period 2,149 2,307 (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 11.3 at unpaid principal balance for loans serviced and subserviced for others and at book value for owned loans serviced. Table 11.3: Managed Servicing Portfolio (in billions) Mar 31, 2019 Dec 31, 2018 Residential mortgage servicing: Serviced for others $ 1,125 1,164 Owned loans serviced 331 334 Subserviced for others 26 4 Total residential servicing 1,482 1,502 Commercial mortgage servicing: Serviced for others 552 543 Owned loans serviced 122 121 Subserviced for others 9 9 Total commercial servicing 683 673 Total managed servicing portfolio $ 2,165 2,175 Total serviced for others $ 1,677 1,707 Ratio of MSRs to related loans serviced for others 0.88 % 0.94
Mortgage Banking Noninterest Income	Table 11.4 presents the components of mortgage banking noninterest income. Table 11.4: Mortgage Banking Noninterest Income Quarter ended March 31, (in millions) 2019 2018 Servicing income, net: Servicing fees: Contractually specified servicing fees $ 840 916 Late charges 33 44 Ancillary fees 38 40 Unreimbursed direct servicing costs (1) (70 ) (94 ) Net servicing fees 841 906 Changes in fair value of MSRs carried at fair value: Due to changes in valuation model inputs or assumptions (2) (A) (891 ) 1,330 Changes due to collection/realization of expected cash flows over time (482 ) (483 ) Total changes in fair value of MSRs carried at fair value (1,373 ) 847 Amortization (66 ) (65 ) Net derivative gains (losses) from economic hedges (3) (B) 962 (1,220 ) Total servicing income, net 364 468 Net gains on mortgage loan origination/sales activities (4) 344 466 Total mortgage banking noninterest income $ 708 934 Market-related valuation changes to MSRs, net of hedge results (2)(3) (A)+(B) $ 71 110 (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 11.1 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 15 (Derivatives) for additional discussion and detail. (4) Includes losses of $(151) million and gains of $625 million for first quarter 2019 and 2018, respectively, related to derivatives used as economic hedges of mortgage loans held for sale and derivative loan commitments.

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Carrying Value of Intangible Assets And Accumulated Amortization	Table 12.1 presents the gross carrying value of intangible assets and accumulated amortization. Table 12.1: Intangible Assets March 31, 2019 December 31, 2018 (in millions) Gross carrying value Accumulated amortization Net carrying value Gross carrying value Accumulated amortization Net carrying value Amortized intangible assets (1): MSRs (2) $ 4,211 (2,784 ) 1,427 4,161 (2,718 ) 1,443 Core deposit intangibles — — — 12,834 (12,834 ) — Customer relationship and other intangibles 3,937 (3,429 ) 508 3,994 (3,449 ) 545 Total amortized intangible assets $ 8,148 (6,213 ) 1,935 20,989 (19,001 ) 1,988 Unamortized intangible assets: MSRs (carried at fair value) (2) $ 13,336 14,649 Goodwill 26,420 26,418 Trademark 14 14 (1) Balances are excluded commencing in the period following full amortization. (2) See Note 11 (Mortgage Banking Activities) for additional information on MSRs.
Amortization Expense for Intangible Assets	Table 12.2 provides the current year and estimated future amortization expense for amortized intangible assets. We based our projections of amortization expense shown below on existing asset balances at March 31, 2019 . Future amortization expense may vary from these projections. Table 12.2: Amortization Expense for Intangible Assets (in millions) Amortized MSRs Customer relationship and other intangibles Total Three months ended March 31, 2019 (actual) $ 66 30 96 Estimate for the remainder of 2019 $ 202 85 287 Estimate for year ended December 31, 2020 242 95 337 2021 206 81 287 2022 183 68 251 2023 154 59 213 2024 130 48 178
Allocation of Goodwill to Operating Segments	Table 12.3 shows the allocation of goodwill to our reportable operating segments. Table 12.3: Goodwill (in millions) Community Banking Wholesale Banking Wealth and Investment Management Consolidated Company December 31, 2017 $ 16,849 8,455 1,283 26,587 Reduction in goodwill related to divested businesses and other (142 ) — — (142 ) March 31, 2018 $ 16,707 8,455 1,283 26,445 December 31, 2018 $ 16,685 8,450 1,283 26,418 Foreign currency translation — 2 — 2 March 31, 2019 $ 16,685 8,452 1,283 26,420

Guarantees, Pledged Assets an_2

Guarantees, Pledged Assets and Collateral and Other Commitments (Tables)	3 Months Ended
	Mar. 31, 2019
Guarantees [Abstract]
Guarantees - Carrying Value and Maximum Exposure to Loss	Table 13.1 shows carrying value, maximum exposure to loss on our guarantees and the related non-investment grade amounts. Table 13.1: Guarantees – Carrying Value and Maximum Exposure to Loss Maximum exposure to loss (in millions) Carrying value of obligation (asset) Expires in one year or less Expires after one year through three years Expires after three years through five years Expires after five years Total Non- investment grade March 31, 2019 Standby letters of credit (1) $ 38 14,919 7,276 3,609 465 26,269 7,941 Securities lending and other indemnifications (2) — — — — 865 865 — Written put options (3) (394 ) 12,392 10,025 3,119 359 25,895 14,808 Loans and MLHFS sold with recourse (4) 53 109 660 1,160 10,420 12,349 9,168 Factoring guarantees (5) — 584 — — — 584 544 Other guarantees 1 — — 3 3,020 3,023 1 Total guarantees $ (302 ) 28,004 17,961 7,891 15,129 68,985 32,462 December 31, 2018 Standby letters of credit (1) $ 40 14,636 7,897 3,398 497 26,428 8,027 Securities lending and other indemnifications (2) — — 1 — 1,044 1,045 1 Written put options (3) (185 ) 17,243 10,502 3,066 400 31,211 21,732 Loans and MLHFS sold with recourse (4) 54 104 653 1,207 10,163 12,127 9,079 Factoring guarantees (5) — 889 — — — 889 751 Other guarantees 1 — — 3 2,959 2,962 1 Total guarantees $ (90 ) 32,872 19,053 7,674 15,063 74,662 39,591 (1) Total maximum exposure to loss includes direct pay letters of credit (DPLCs) of $7.2 billion and $7.5 billion at March 31, 2019 , and December 31, 2018 , respectively. (2) Includes indemnifications provided to certain third-party clearing agents. Outstanding customer obligations under these arrangements were $75 million and $70 million with related collateral of $790 million and $974 million at March 31, 2019 , and December 31, 2018 , respectively. (3) Written put options, which are in the form of derivatives, are also included in the derivative disclosures in Note 15 (Derivatives). Carrying value net asset position is a result of certain deferred premium option trades. (4) Represent recourse provided, predominantly to the GSEs, on loans sold under various programs and arrangements. (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 13.2 provides the total carrying amount of pledged assets by asset type and the fair value of pledged off-balance sheet securities for securities financings. The table excludes pledged consolidated VIE assets of $14.8 billion and $14.1 billion at March 31, 2019 , and December 31, 2018 , respectively, which can only be used to settle the liabilities of those entities. The table also excludes $545 million and $617 million in assets pledged in transactions with VIE’s accounted for as secured borrowings at March 31, 2019 , and December 31, 2018 , respectively. See Note 10 (Securitizations and Variable Interest Entities) for additional information on consolidated VIE assets and secured borrowings. Table 13.2: Pledged Assets (in millions) Mar 31, Dec 31, Related to trading activities: Debt securities $ 102,951 96,616 Equity securities 10,349 9,695 Total pledged assets related to trading activities (1) 113,300 106,311 Related to non-trading activities: Debt securities and other (2) 57,067 62,438 Mortgage loans held for sale and loans (3) 464,216 453,894 Total pledged assets related to non-trading activities 521,283 516,332 Total pledged assets $ 634,583 622,643 (1) Consists of pledged assets related to trading activities of $42.7 billion and $45.5 billion at March 31, 2019 , and December 31, 2018 , respectively and off-balance sheet securities of $70.6 billion and $60.8 billion as of the same dates, respectively, that are pledged as collateral for repurchase agreements and other securities financings. Total pledged assets related to trading activities includes $113.2 billion and $106.2 billion at March 31, 2019 , and December 31, 2018 , respectively, under agreements that permit the secured parties to sell or repledge the collateral. (2) Includes carrying value of $3.8 billion and $4.2 billion (fair value of $3.7 billion and $ 4.1 billion ) in collateral for repurchase agreements at March 31, 2019 , and December 31, 2018 , respectively, which are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Also includes $56 million and $68 million in collateral pledged under repurchase agreements at March 31, 2019 , and December 31, 2018 , respectively, that permit the secured parties to sell or repledge the collateral. Substantially all other pledged securities are pursuant to agreements that do not permit the secured party to sell or repledge the collateral. (3) Includes mortgage loans held for sale of $1.0 billion and $7.4 billion at March 31, 2019 , and December 31, 2018 , respectively. Substantially all of the total mortgage loans held for sale and loans are pledged under agreements that do not permit the secured parties to sell or repledge the collateral. Amounts exclude $578 million and $1.2 billion at March 31, 2019 , and December 31, 2018 , 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 13.3 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 13.3 , we also have balance sheet netting related to derivatives that is disclosed in Note 15 (Derivatives). Table 13.3: Offsetting – Securities Financing Activities (in millions) Mar 31, Dec 31, Assets: Resale and securities borrowing agreements Gross amounts recognized $ 135,549 112,662 Gross amounts offset in consolidated balance sheet (1) (19,688 ) (15,258 ) Net amounts in consolidated balance sheet (2) 115,861 97,404 Collateral not recognized in consolidated balance sheet (3) (115,063 ) (96,734 ) Net amount (4) $ 798 670 Liabilities: Repurchase and securities lending agreements Gross amounts recognized (5) $ 112,993 106,248 Gross amounts offset in consolidated balance sheet (1) (19,688 ) (15,258 ) Net amounts in consolidated balance sheet (6) 93,305 90,990 Collateral pledged but not netted in consolidated balance sheet (7) (93,095 ) (90,798 ) Net amount (8) $ 210 192 (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) Includes $98.6 billion and $80.1 billion classified on our consolidated balance sheet in federal funds sold and securities purchased under resale agreements at March 31, 2019 , and December 31, 2018 , respectively. Also includes securities purchased under long-term resale agreements (generally one year or more) classified in loans, which totaled $17.3 billion at both March 31, 2019 , and December 31, 2018 . (3) Represents the fair value of collateral we have received under enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized asset due from each counterparty. At March 31, 2019 , and December 31, 2018 , we have received total collateral with a fair value of $146.2 billion and $123.1 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 $70.9 billion at March 31, 2019 , and $60.8 billion at December 31, 2018 . (4) Represents the amount of our exposure that is not collateralized and/or is not subject to an enforceable MRA or MSLA. (5) For additional information on underlying collateral and contractual maturities, see the “Repurchase and Securities Lending Agreements” section in this Note. (6) Amount is classified in short-term borrowings on our consolidated balance sheet. (7) Represents the fair value of collateral we have pledged, related to enforceable MRAs or MSLAs, limited for table presentation purposes to the amount of the recognized liability owed to each counterparty. At March 31, 2019 , and December 31, 2018 , we have pledged total collateral with a fair value of $115.2 billion and $108.8 billion , respectively, of which, the counterparty does not have the right to sell or repledge $3.8 billion as of March 31, 2019 and $4.4 billion as of December 31, 2018 . (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 13.4 provides the gross amounts recognized on the balance sheet (before the effects of offsetting) of our liabilities for repurchase and securities lending agreements disaggregated by underlying collateral type. Table 13.4: Underlying Collateral Types of Gross Obligations (in millions) Mar 31, Dec 31, Repurchase agreements: Securities of U.S. Treasury and federal agencies $ 46,186 38,408 Securities of U.S. States and political subdivisions 61 159 Federal agency mortgage-backed securities 44,672 47,241 Non-agency mortgage-backed securities 1,767 1,875 Corporate debt securities 6,989 6,191 Asset-backed securities 2,337 2,074 Equity securities 1,033 992 Other 341 340 Total repurchases 103,386 97,280 Securities lending arrangements: Securities of U.S. Treasury and federal agencies 186 222 Federal agency mortgage-backed securities — 2 Corporate debt securities 390 389 Equity securities (1) 9,011 8,349 Other 20 6 Total securities lending 9,607 8,968 Total repurchases and securities lending $ 112,993 106,248 (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 13.5 provides the contractual maturities of our gross obligations under repurchase and securities lending agreements. Table 13.5: Contractual Maturities of Gross Obligations (in millions) Overnight/continuous Up to 30 days 30-90 days >90 days Total gross obligation March 31, 2019 Repurchase agreements $ 93,042 2,696 2,844 4,804 103,386 Securities lending arrangements 9,308 — 299 — 9,607 Total repurchases and securities lending (1) $ 102,350 2,696 3,143 4,804 112,993 December 31, 2018 Repurchase agreements $ 86,574 3,244 2,153 5,309 97,280 Securities lending arrangements 8,669 — 299 — 8,968 Total repurchases and securities lending (1) $ 95,243 3,244 2,452 5,309 106,248 (1) Securities lending is executed under agreements that allow either party to terminate the transaction without notice, while repurchase agreements have a term structure to them that technically matures at a point in time. The overnight/continuous repurchase agreements require election of both parties to roll the trade rather than the election to terminate the arrangement as in securities lending.

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional or Contractual Amounts and Fair Values of Derivatives	Table 15.1 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 15.1: Notional or Contractual Amounts and Fair Values of Derivatives March 31, 2019 December 31, 2018 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 $ 187,889 2,195 810 177,511 2,237 636 Foreign exchange contracts (1) 33,647 474 1,575 34,176 573 1,376 Total derivatives designated as qualifying hedging instruments 2,669 2,385 2,810 2,012 Derivatives not designated as hedging instruments Economic hedges: Interest rate contracts (2) 216,847 905 495 173,215 849 369 Equity contracts 16,267 1,106 450 13,920 1,362 79 Foreign exchange contracts 16,590 154 92 19,521 225 80 Credit contracts – protection purchased 200 42 — 100 27 — Subtotal 2,207 1,037 2,463 528 Customer accommodation trading and other derivatives: Interest rate contracts 10,242,378 17,349 15,957 9,162,821 15,349 15,303 Commodity contracts 62,763 1,528 1,160 66,173 1,588 2,336 Equity contracts 227,993 5,662 7,510 217,890 6,183 5,931 Foreign exchange contracts 331,020 5,272 5,045 364,982 5,916 5,657 Credit contracts – protection sold 13,426 135 125 11,741 76 182 Credit contracts – protection purchased 22,440 127 198 20,880 175 98 Subtotal 30,073 29,995 29,287 29,507 Total derivatives not designated as hedging instruments 32,280 31,032 31,750 30,035 Total derivatives before netting 34,949 33,417 34,560 32,047 Netting (3) (23,711 ) (26,024 ) (23,790 ) (23,548 ) Total $ 11,238 7,393 10,770 8,499 (1) The notional amount for foreign exchange contracts at March 31, 2019 , and December 31, 2018 , excludes $11.0 billion and $11.2 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, MLHFS, 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 15.2 for further information.
Gross Fair Values of Derivative Assets and Liabilities	Table 15.2 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 $31.6 billion and $30.5 billion of gross derivative assets and liabilities, respectively, at March 31, 2019 , and $30.9 billion and $28.4 billion , respectively, at December 31, 2018 , 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 $3.3 billion and $2.9 billion , respectively, at March 31, 2019 , and $3.7 billion and $3.6 billion , respectively, at December 31, 2018 , 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 15.2 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 13 (Guarantees, Pledged Assets and Collateral, and Other Commitments). Table 15.2: Gross Fair Values of Derivative Assets and Liabilities (in millions) Gross amounts recognized Gross amounts offset in consolidated balance sheet (1) Net amounts in consolidated balance sheet Gross amounts not offset in consolidated balance sheet (Disclosure-only netting) (2) Net amounts Percent exchanged in over-the-counter market (3) March 31, 2019 Derivative assets Interest rate contracts $ 20,449 (13,354 ) 7,095 (123 ) 6,972 90 % Commodity contracts 1,528 (846 ) 682 — 682 80 Equity contracts 6,768 (4,617 ) 2,151 (65 ) 2,086 71 Foreign exchange contracts 5,900 (4,642 ) 1,258 (17 ) 1,241 100 Credit contracts – protection sold 135 (133 ) 2 — 2 8 Credit contracts – protection purchased 169 (119 ) 50 (1 ) 49 82 Total derivative assets $ 34,949 (23,711 ) 11,238 (206 ) 11,032 Derivative liabilities Interest rate contracts $ 17,262 (14,761 ) 2,501 (576 ) 1,925 92 % Commodity contracts 1,160 (663 ) 497 (2 ) 495 72 Equity contracts 7,960 (5,154 ) 2,806 (120 ) 2,686 83 Foreign exchange contracts 6,712 (5,135 ) 1,577 (174 ) 1,403 100 Credit contracts – protection sold 125 (123 ) 2 (2 ) — 71 Credit contracts – protection purchased 198 (188 ) 10 — 10 8 Total derivative liabilities $ 33,417 (26,024 ) 7,393 (874 ) 6,519 December 31, 2018 Derivative assets Interest rate contracts $ 18,435 (12,029 ) 6,406 (80 ) 6,326 90 % Commodity contracts 1,588 (849 ) 739 (4 ) 735 57 Equity contracts 7,545 (5,318 ) 2,227 (755 ) 1,472 78 Foreign exchange contracts 6,714 (5,355 ) 1,359 (35 ) 1,324 100 Credit contracts – protection sold 76 (73 ) 3 — 3 12 Credit contracts – protection purchased 202 (166 ) 36 (1 ) 35 78 Total derivative assets $ 34,560 (23,790 ) 10,770 (875 ) 9,895 Derivative liabilities Interest rate contracts $ 16,308 (13,152 ) 3,156 (567 ) 2,589 92 % Commodity contracts 2,336 (727 ) 1,609 (8 ) 1,601 85 Equity contracts 6,010 (3,877 ) 2,133 (110 ) 2,023 75 Foreign exchange contracts 7,113 (5,522 ) 1,591 (188 ) 1,403 100 Credit contracts – protection sold 182 (180 ) 2 (2 ) — 67 Credit contracts – protection purchased 98 (90 ) 8 — 8 11 Total derivative liabilities $ 32,047 (23,548 ) 8,499 (875 ) 7,624 (1) Represents amounts with counterparties subject to enforceable master netting arrangements that have been offset in the consolidated balance sheet, including related cash collateral and portfolio level counterparty valuation adjustments. Counterparty valuation adjustments were $290 million and $353 million related to derivative assets and $104 million and $152 million related to derivative liabilities at March 31, 2019 , and December 31, 2018 , respectively. Cash collateral totaled $2.7 billion and $5.2 billion , netted against derivative assets and liabilities, respectively, at March 31, 2019 , and $3.7 billion and $3.6 billion , respectively, at December 31, 2018 . (2) Represents the fair value of non-cash collateral pledged and received against derivative assets and liabilities with the same counterparty that are subject to enforceable master netting arrangements. U.S. GAAP does not permit netting of such non-cash collateral balances in the consolidated balance sheet but requires disclosure of these amounts. (3) Over-the-counter percentages are calculated based on gross amounts recognized as of the respective balance sheet date.
Derivatives in Fair Value and Cash Flow Hedging Relationships	Table 15.3 shows the net gains (losses) related to derivatives in fair value and cash flow hedging relationships. Table 15.3: Gains (Losses) Recognized in Consolidated Statement of Income on Fair Value and Cash Flow Hedging Relationships Net interest income Noninterest income (in millions) Debt securities Loans Mortgage loans held for sale Deposits Long-term debt Other Total Quarter ended March 31, 2019 Total amounts presented in the consolidated statement of income $ 3,941 11,354 152 (2,026 ) (1,927 ) 574 12,068 Gains (losses) on fair value hedging relationships Interest contracts Amounts related to interest settlements on derivatives (1) 16 — — (23 ) (7 ) — (14 ) Recognized on derivatives (814 ) — (8 ) 207 1,986 — 1,371 Recognized on hedged items 817 — 7 (190 ) (1,947 ) — (1,313 ) Foreign exchange contracts Amounts related to interest settlements on derivatives (1)(2) 10 — — — (142 ) — (132 ) Recognized on derivatives (3) (4 ) — — — 292 (402 ) (114 ) Recognized on hedged items 5 — — — (266 ) 391 130 Net income (expense) recognized on fair value hedges 30 — (1 ) (6 ) (84 ) (11 ) (72 ) Gains (losses) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — (78 ) — — — — (78 ) Foreign exchange contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — — — — (1 ) — (1 ) Net income (expense) recognized on cash flow hedges $ — (78 ) — — (1 ) — (79 ) (continued on following page) (continued from previous page) Net interest income Noninterest income (in millions) Debt securities Loans Mortgage loans held for sale Deposits Long-term debt Other Total Quarter ended March 31, 2018 Total amounts presented in the consolidated statement of income $ 3,414 10,579 179 (1,090 ) (1,576 ) 602 12,108 Gains (losses) on fair value hedging relationships Interest contracts Amounts related to interest settlements on derivatives (1) (82 ) — (1 ) (5 ) 171 — 83 Recognized on derivatives 950 1 6 (149 ) (2,393 ) — (1,585 ) Recognized on hedged items (968 ) (1 ) (8 ) 141 2,334 — 1,498 Foreign exchange contracts Amounts related to interest settlements on derivatives (1)(2) 5 — — — (80 ) — (75 ) Recognized on derivatives (3) 4 — — — (171 ) 660 493 Recognized on hedged items (3 ) — — — 109 (627 ) (521 ) Net income (expense) recognized on fair value hedges (94 ) — (3 ) (13 ) (30 ) 33 (107 ) Gains (losses) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — (60 ) — — — — (60 ) Foreign exchange contracts Realized gains (losses) (pre-tax) reclassified from cumulative OCI into net income (4) — — — — — — — Net income (expense) recognized on cash flow hedges $ — (60 ) — — — — (60 ) (1) Includes changes in fair value due to the passage of time associated with the non-zero fair value amount at hedge inception. (2) Includes $7 million and $0 million for first quarter 2019 and 2018 , respectively, of the time value component recognized as net interest income (expense) on forward derivatives hedging foreign currency debt securities and long-term debt that were excluded from the assessment of hedge effectiveness. (3) For certain fair value hedges of foreign currency risk, changes in fair value of cross-currency swaps attributable to changes in cross-currency basis spreads are excluded from the assessment of hedge effectiveness and recorded in other comprehensive income. See Note 21 (Other Comprehensive Income) for the amounts recognized in other comprehensive income. (4) See Note 21 (Other Comprehensive Income) for details of amounts reclassified to net income.
Hedged Items in Fair Value Hedging Relationships	Table 15.4 shows the carrying amount and associated cumulative basis adjustment related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships. Table 15.4: Hedged Items in Fair Value Hedging Relationship Hedged Items Currently Designated Hedged Items No Longer Designated (1) (in millions) Carrying Amount of Assets/(Liabilities) (2)(4) Hedge Accounting Basis Adjustment Assets/(Liabilities) (3) Carrying Amount of Assets/(Liabilities) (4) Hedge Accounting Basis Adjustment March 31, 2019 Available-for-sale debt securities (5) $ 40,081 256 4,596 110 Loans — — — — Mortgage loans held for sale 316 4 228 2 Deposits (59,921 ) (82 ) — — Long-term debt (111,404 ) (2,935 ) (25,588 ) 319 December 31, 2018 Available-for-sale debt securities (5) 37,857 (157 ) 4,938 238 Loans — — — — Mortgage loans held for sale 448 7 — — Deposits (56,535 ) 115 — — Long-term debt (104,341 ) (742 ) (25,539 ) 366 (1) Represents hedged items no longer designated in qualifying fair value hedging relationships for which an associated basis adjustment exists at the balance sheet date. (2) Does not include the carrying amount of hedged items where only foreign currency risk is the designated hedged risk. The carrying amount excluded $1.6 billion for debt securities and $(6.2) billion for long-term debt as of March 31, 2019, and $1.6 billion for debt securities and $(6.3) billion for long-term debt as of December 31, 2018. (3) The balance includes $1.0 billion and $77 million of debt securities and long-term debt cumulative basis adjustments, respectively, as of March 31, 2019, and $1.4 billion and $66 million of debt securities and long-term debt cumulative basis adjustments,respectively, as of December 31, 2018, on terminated hedges whereby the hedged items have subsequently been re-designated into existing hedges. (4) Represents the full carrying amount of the hedged asset or liability item as of the balance sheet date, except for circumstances in which only a portion of the asset or liability was designated as the hedged item in which case only the portion designated is presented. (5) Carrying amount represents the amortized cost.
Derivatives Not Designated as Hedging Instruments	Table 15.5 shows the net gains (losses) recognized by income statement lines, related to derivatives not designated as hedging instruments. Table 15.5: Gains (Losses) on Derivatives Not Designated as Hedging Instruments Noninterest income (in millions) Mortgage banking Net gains (losses) from equity securities Net gains (losses) from trading activities Other Total Quarter ended March 31, 2019 Net gains (losses) recognized on economic hedges derivatives: Interest contracts (1) $ 811 — — 5 816 Equity contracts — (885 ) — 7 (878 ) Foreign exchange contracts — — — (24 ) (24 ) Credit contracts — — — 15 15 Subtotal (2) 811 (885 ) — 3 (71 ) Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest contracts (3) 118 — (284 ) — (166 ) Commodity contracts — — 51 — 51 Equity contracts — — (2,149 ) (273 ) (2,422 ) Foreign exchange contracts — — 14 — 14 Credit contracts — — (44 ) — (44 ) Subtotal 118 — (2,412 ) (273 ) (2,567 ) Net gains (losses) recognized related to derivatives not designated as hedging instruments $ 929 (885 ) (2,412 ) (270 ) (2,638 ) (continued on following page) (continued from previous page) Noninterest income (in millions) Mortgage banking Net gains (losses) from equity securities Net gains (losses) from trading activities Other Total Quarter ended March 31, 2018 Net gains (losses) recognized on economic hedges derivatives: Interest contracts (1) $ (595 ) — — 9 (586 ) Equity contracts — (58 ) — — (58 ) Foreign exchange contracts — — — (159 ) (159 ) Credit contracts — — — 4 4 Subtotal (2) (595 ) (58 ) — (146 ) (799 ) Net gains (losses) recognized on customer accommodation trading and other derivatives: Interest contracts (3) (259 ) — 385 — 126 Commodity contracts — — 39 — 39 Equity contracts — — 459 (195 ) 264 Foreign exchange contracts — — 310 — 310 Credit contracts — — 10 — 10 Subtotal (259 ) — 1,203 (195 ) 749 Net gains (losses) recognized related to derivatives not designated as hedging instruments $ (854 ) (58 ) 1,203 (341 ) (50 ) (1) Mortgage banking amounts for first quarter 2019 are comprised of gains of $962 million related to derivatives used as economic hedges of MSRs measured at fair value offset by losses of $(151) million related to derivatives used as economic hedges of mortgage loans held for sale and derivative loan commitments. The corresponding amounts for first quarter 2018 are comprised of losses of $(1.2) billion offset by gains of $625 million , respectively. (2) Includes hedging gains (losses) of $(18) million and $28 million for first quarter 2019 and 2018, respectively, which partially offset hedge accounting ineffectiveness. (3) Amounts presented in mortgage banking noninterest income are gains on derivative loan commitments.
Sold and Purchased Credit Derivatives	Table 15.6 provides details of sold and purchased credit derivatives. Table 15.6: Sold and Purchased Credit Derivatives Notional amount (in millions) Fair value liability Protection sold (A) Protection sold – non- investment grade Protection purchased with identical underlyings (B) Net protection sold (A) - (B) Other protection purchased Range of maturities March 31, 2019 Credit default swaps on: Corporate bonds $ 36 2,010 483 1,332 678 1,843 2019 - 2027 Structured products 37 102 97 90 12 113 2022 - 2047 Credit protection on: Default swap index — 4,916 585 2,773 2,143 3,690 2019 - 2028 Commercial mortgage-backed securities index 42 352 97 326 26 50 2047 - 2058 Asset-backed securities index 8 42 42 42 — 1 2045 - 2046 Other 2 6,004 5,809 — 6,004 12,380 2019 - 2048 Total credit derivatives $ 125 13,426 7,113 4,563 8,863 18,077 December 31, 2018 Credit default swaps on: Corporate bonds $ 59 2,037 441 1,374 663 1,460 2019 - 2027 Structured products 62 133 128 121 12 113 2022 - 2047 Credit protection on: Default swap index 1 3,618 582 1,998 1,620 2,896 2019 - 2028 Commercial mortgage-backed securities index 49 389 109 363 26 51 2047 - 2058 Asset-backed securities index 9 42 42 42 — 1 2045 - 2046 Other 2 5,522 5,327 — 5,522 12,561 2018 - 2048 Total credit derivatives $ 182 11,741 6,629 3,898 7,843 17,082

Fair Values of Assets and Lia_2

Fair Values of Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value, Measurements from Brokers or Third Party Pricing Services	Table 16.1 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 16.1 . Table 16.1: Fair Value Measurements by Brokers or Third-Party Pricing Services Brokers Third-party pricing services (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 March 31, 2019 Trading debt securities $ — — — 485 310 — Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies — — — 12,144 2,962 — Securities of U.S. states and political subdivisions — — — — 49,230 43 Mortgage-backed securities — — — — 156,450 41 Other debt securities (1) — 45 130 — 44,292 771 Total available-for-sale debt securities — 45 130 12,144 252,934 855 Equity securities: Marketable — — — — 161 — Nonmarketable — — — — — — Total equity securities — — — — 161 — Derivative assets — — — 17 — — Derivative liabilities — — — (21 ) (1 ) — Other liabilities (2) — — — — — — December 31, 2018 Trading debt securities $ — — — 899 256 — Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies — — — 10,399 2,949 — Securities of U.S. states and political subdivisions — — — — 48,377 43 Mortgage-backed securities — — — — 160,162 41 Other debt securities (1) — 45 129 — 44,292 758 Total available-for-sale debt securities — 45 129 10,399 255,780 842 Equity securities: Marketable — — — — 158 — Nonmarketable — — — — 1 — Total equity securities — — — — 159 — Derivative assets — — — 17 — — Derivative liabilities — — — (12 ) — — 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 16.2 presents the balances of assets and liabilities recorded at fair value on a recurring basis. Table 16.2: Fair Value on a Recurring Basis (in millions) Level 1 Level 2 Level 3 Netting (1) Total March 31, 2019 Trading debt securities: Securities of U.S. Treasury and federal agencies $ 17,584 4,971 — — 22,555 Securities of U.S. states and political subdivisions — 3,385 — — 3,385 Collateralized loan obligations — 674 275 — 949 Corporate debt securities — 11,073 41 — 11,114 Mortgage-backed securities — 31,162 — — 31,162 Asset-backed securities — 1,187 — — 1,187 Other trading debt securities — 11 15 — 26 Total trading debt securities 17,584 52,463 331 — 70,378 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies 12,144 2,962 — — 15,106 Securities of U.S. states and political subdivisions — 49,230 470 — 49,700 Mortgage-backed securities: Federal agencies — 150,663 — — 150,663 Residential — 1,456 — — 1,456 Commercial — 4,331 41 — 4,372 Total mortgage-backed securities — 156,450 41 — 156,491 Corporate debt securities 36 5,941 377 — 6,354 Collateralized loan and other debt obligations (2) — 34,560 755 — 35,315 Asset-backed securities: Automobile loans and leases — 945 — — 945 Home equity loans — 14 — — 14 Other asset-backed securities — 3,811 362 — 4,173 Total asset-backed securities — 4,770 362 — 5,132 Other debt securities — 1 — — 1 Total available-for-sale debt securities 12,180 253,914 2,005 (3) — 268,099 Mortgage loans held for sale — 10,093 998 — 11,091 Loans held for sale — 927 71 — 998 Loans — — 225 — 225 Mortgage servicing rights (residential) — — 13,336 — 13,336 Derivative assets: Interest rate contracts 67 20,254 128 — 20,449 Commodity contracts — 1,503 25 — 1,528 Equity contracts 1,936 3,275 1,557 — 6,768 Foreign exchange contracts 17 5,872 11 — 5,900 Credit contracts — 216 88 — 304 Netting — — — (23,711 ) (23,711 ) Total derivative assets 2,020 31,120 1,809 (23,711 ) 11,238 Equity securities - excluding securities at NAV: Marketable 25,168 900 — — 26,068 Nonmarketable — 20 6,381 — 6,401 Total equity securities 25,168 920 6,381 — 32,469 Total assets included in the fair value hierarchy $ 56,952 349,437 25,156 (23,711 ) 407,834 Equity securities at NAV (4) 117 Total assets recorded at fair value 407,951 Derivative liabilities: Interest rate contracts $ (18 ) (17,217 ) (27 ) — (17,262 ) Commodity contracts — (1,117 ) (43 ) — (1,160 ) Equity contracts (1,382 ) (4,859 ) (1,719 ) — (7,960 ) Foreign exchange contracts (21 ) (6,664 ) (27 ) — (6,712 ) Credit contracts — (284 ) (39 ) — (323 ) Netting — — — 26,024 26,024 Total derivative liabilities (1,421 ) (30,141 ) (1,855 ) 26,024 (7,393 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (12,562 ) (219 ) — — (12,781 ) Mortgage-backed securities — (404 ) — — (404 ) Corporate debt securities — (5,075 ) — — (5,075 ) Equity securities (3,325 ) (1 ) — — (3,326 ) Other securities — — — — — Total short sale liabilities (15,887 ) (5,699 ) — — (21,586 ) Other liabilities — — (2 ) — (2 ) Total liabilities recorded at fair value $ (17,308 ) (35,840 ) (1,857 ) 26,024 (28,981 ) (1) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 15 (Derivatives) for additional information. (2) Includes collateralized debt obligations of $755 million . (3) A significant portion of the balance consists of securities that are 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. (4) Consists of certain nonmarketable equity securities 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 (1) Total December 31, 2018 Trading debt securities: Securities of U.S. Treasury and federal agencies $ 20,525 2,892 — — 23,417 Securities of U.S. states and political subdivisions — 3,272 3 — 3,275 Collateralized loan obligations — 673 237 — 910 Corporate debt securities — 10,723 34 — 10,757 Mortgage-backed securities — 30,715 — — 30,715 Asset-backed securities — 893 — — 893 Other trading debt securities — 6 16 — 22 Total trading debt securities 20,525 49,174 290 — 69,989 Available-for-sale debt securities: Securities of U.S. Treasury and federal agencies 10,399 2,949 — — 13,348 Securities of U.S. states and political subdivisions — 48,820 444 — 49,264 Mortgage-backed securities: Federal agencies — 153,203 — — 153,203 Residential — 2,775 — — 2,775 Commercial — 4,184 41 — 4,225 Total mortgage-backed securities — 160,162 41 — 160,203 Corporate debt securities 34 5,867 370 — 6,271 Collateralized loan and other debt obligations (2) — 34,543 800 — 35,343 Asset-backed securities: Automobile loans and leases — 925 — — 925 Home equity loans — 112 — — 112 Other asset-backed securities — 4,056 389 — 4,445 Total asset-backed securities — 5,093 389 — 5,482 Other debt securities — 1 — — 1 Total available-for-sale debt securities 10,433 257,435 2,044 (3) — 269,912 Mortgage loans held for sale — 10,774 997 — 11,771 Loans held for sale — 1,409 60 — 1,469 Loans — — 244 — 244 Mortgage servicing rights (residential) — — 14,649 — 14,649 Derivative assets: Interest rate contracts 46 18,294 95 — 18,435 Commodity contracts — 1,535 53 — 1,588 Equity contracts 1,648 4,582 1,315 — 7,545 Foreign exchange contracts 17 6,689 8 — 6,714 Credit contracts — 179 99 — 278 Netting — — — (23,790 ) (23,790 ) Total derivative assets 1,711 31,279 1,570 (23,790 ) 10,770 Equity securities - excluding securities at NAV: Marketable 23,205 757 — — 23,962 Nonmarketable — 24 5,468 — 5,492 Total equity securities 23,205 781 5,468 — 29,454 Total assets included in the fair value hierarchy $ 55,874 350,852 25,322 (23,790 ) 408,258 Equity securities at NAV (4) 102 Total assets recorded at fair value 408,360 Derivative liabilities: Interest rate contracts $ (21 ) (16,217 ) (70 ) — (16,308 ) Commodity contracts — (2,287 ) (49 ) — (2,336 ) Equity contracts (1,492 ) (3,186 ) (1,332 ) — (6,010 ) Foreign exchange contracts (12 ) (7,067 ) (34 ) — (7,113 ) Credit contracts — (216 ) (64 ) — (280 ) Netting — — — 23,548 23,548 Total derivative liabilities (1,525 ) (28,973 ) (1,549 ) 23,548 (8,499 ) Short sale liabilities: Securities of U.S. Treasury and federal agencies (11,850 ) (411 ) — — (12,261 ) Mortgage-backed securities — (47 ) — — (47 ) Corporate debt securities — (4,505 ) — — (4,505 ) Equity securities (2,902 ) (2 ) — — (2,904 ) Other securities — (3 ) — — (3 ) Total short sale liabilities (14,752 ) (4,968 ) — — (19,720 ) Other liabilities — — (2 ) — (2 ) Total liabilities recorded at fair value $ (16,277 ) (33,941 ) (1,551 ) 23,548 (28,221 ) (1) Represents balance sheet netting of derivative asset and liability balances and related cash collateral. See Note 15 (Derivatives) for additional information. (2) Includes collateralized debt obligations of $800 million . (3) A significant portion of the balance consists of securities that are 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. (4) Consists of certain nonmarketable equity securities 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, Assets and Liabilities Measured on Recurring Basis, Level 3 Reconciliation	Table 16.3: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – Quarter ended March 31, 2019 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 (4) (in millions) Balance, beginning of period Net income Other compre- hensive income Transfers into Level 3 (2) Transfers out of Level 3 (3) Balance, end of period Quarter ended March 31, 2019 Trading debt securities: Securities of U.S. states and political subdivisions $ 3 — — (2 ) — (1 ) — — Collateralized loan obligations 237 (3 ) — 41 — — 275 1 Corporate debt securities 34 2 — 4 1 — 41 2 Other trading debt securities 16 (1 ) — — — — 15 — Total trading debt securities 290 (2 ) — 43 1 (1 ) 331 3 (5) Available-for-sale debt securities: Securities of U.S. states and political subdivisions 444 — 3 23 — — 470 — Mortgage-backed securities: Residential — — — — — — — — Commercial 41 — — — — — 41 — Total mortgage-backed securities 41 — — — — — 41 — Corporate debt securities 370 1 4 2 — — 377 — Collateralized loan and other debt obligations 800 6 (4 ) (47 ) — — 755 — Asset-backed securities: Other asset-backed securities 389 — (1 ) (26 ) — — 362 — Total asset-backed securities 389 — (1 ) (26 ) — — 362 — Total available-for-sale debt securities 2,044 7 2 (48 ) — — 2,005 — (6) Mortgage loans held for sale 997 15 — (66 ) 56 (4 ) 998 15 (7) Loans held for sale 60 — — 11 37 (37 ) 71 — Loans 244 — — (19 ) — — 225 (2 ) (7) Mortgage servicing rights (residential) (8) 14,649 (1,373 ) — 60 — — 13,336 (891 ) (7) Net derivative assets and liabilities: Interest rate contracts 25 187 — (111 ) — — 101 132 Commodity contracts 4 (51 ) — 27 2 — (18 ) (15 ) Equity contracts (17 ) (119 ) — (3 ) 9 (32 ) (162 ) (114 ) Foreign exchange contracts (26 ) 7 — 3 — — (16 ) 11 Credit contracts 35 8 — 6 — — 49 13 Total derivative contracts 21 32 — (78 ) 11 (32 ) (46 ) 27 (9) Equity securities: Nonmarketable 5,468 926 — (1 ) — (12 ) 6,381 926 Total equity securities 5,468 926 — (1 ) — (12 ) 6,381 926 (10) Other liabilities (2 ) — — — — — (2 ) — (7) (1) See Table 16.4 for detail. (2) All assets and liabilities transferred into level 3 were previously classified within level 2. (3) All assets and liabilities transferred out of level 3 are classified as level 2. (4) 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. (5) Included in net gains (losses) from trading activities in the income statement. (6) Included in net gains (losses) on debt securities in the income statement. (7) Included in mortgage banking and other noninterest income in the income statement. (8) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities). (9) Included in mortgage banking, trading activities, equity securities and other noninterest income in the income statement. (10) Included in net gains (losses) from equity securities in the income statement. (continued on following page) (continued from previous page) Table 16.4 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 first quarter 2019 . Table 16.4: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2019 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2019 Trading debt securities: Securities of U.S. states and political subdivisions $ — — — (2 ) (2 ) Collateralized loan obligations 130 (87 ) — (2 ) 41 Corporate debt securities 5 (1 ) — — 4 Other trading debt securities — — — — — Total trading debt securities 135 (88 ) — (4 ) 43 Available-for-sale debt securities: Securities of U.S. states and political subdivisions — — 49 (26 ) 23 Mortgage-backed securities: Residential — — — — — Commercial — — — — — Total mortgage-backed securities — — — — — Corporate debt securities 3 — — (1 ) 2 Collateralized loan and other debt obligations — — — (47 ) (47 ) Asset-backed securities: Other asset-backed securities — (3 ) 66 (89 ) (26 ) Total asset-backed securities — (3 ) 66 (89 ) (26 ) Total available-for-sale debt securities 3 (3 ) 115 (163 ) (48 ) Mortgage loans held for sale 16 (93 ) 46 (35 ) (66 ) Loans held for sale 12 (1 ) — — 11 Loans 2 — 3 (24 ) (19 ) Mortgage servicing rights (residential) (1) — (281 ) 341 — 60 Net derivative assets and liabilities: Interest rate contracts — — — (111 ) (111 ) Commodity contracts — — — 27 27 Equity contracts — — — (3 ) (3 ) Foreign exchange contracts — — — 3 3 Credit contracts 6 — — — 6 Total derivative contracts 6 — — (84 ) (78 ) Equity securities: Nonmarketable — (1 ) — — (1 ) Total equity securities — (1 ) — — (1 ) Other liabilities — — — — — (1) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities). The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for first quarter 2018 , are presented in Table 16.5 . Table 16.5: Changes in Level 3 Fair Value Assets and Liabilities on a Recurring Basis – March 31, 2018 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 (2) Transfers out of Level 3 (3) Balance, end of period (4) Quarter ended March 31, 2018 Trading debt securities: Securities of U.S. states and $ 3 — — — — — 3 — Collateralized loan obligations 354 2 — (40 ) — — 316 16 Corporate debt securities 31 — — 3 — — 34 — Other trading debt securities 19 (1 ) — — — — 18 — Total trading debt securities 407 1 — (37 ) — — 371 16 (5) Available-for-sale debt securities: Securities of U.S. states and political subdivisions 925 4 (2 ) (41 ) — (269 ) 617 — Mortgage-backed securities: Residential 1 — — — — — 1 — Commercial 75 1 (1 ) (8 ) — — 67 — Total mortgage-backed securities 76 1 (1 ) (8 ) — — 68 — Corporate debt securities 407 1 3 (1 ) — — 410 — Collateralized loan and other debt obligations 1,020 5 43 (23 ) — — 1,045 — Asset-backed securities: Other asset-backed securities 566 8 (7 ) (66 ) — — 501 — Total asset-backed securities 566 8 (7 ) (66 ) — — 501 — Total available-for-sale debt securities 2,994 19 36 (139 ) — (269 ) 2,641 — (6) Mortgage loans held for sale 998 (23 ) — (37 ) 15 (3 ) 950 (23 ) (7) Loans held for sale 14 2 — (16 ) — — — — Loans 376 (1 ) — (23 ) — — 352 (4 ) (7) Mortgage servicing rights (residential) (8) 13,625 847 — 569 — — 15,041 1,330 (7) Net derivative assets and liabilities: Interest rate contracts 71 (345 ) — 266 — — (8 ) (73 ) Commodity contracts 19 15 — (24 ) — — 10 — Equity contracts (511 ) 69 — 71 — 49 (322 ) 25 Foreign exchange contracts 7 (7 ) — 1 — — 1 (3 ) Credit contracts 36 8 — (3 ) — — 41 4 Total derivative contracts (378 ) (260 ) — 311 — 49 (278 ) (47 ) (9) Equity securities: Nonmarketable 5,203 108 — (96 ) 4 — 5,219 101 Total equity securities 5,203 108 — (96 ) 4 — 5,219 101 (10) Other liabilities (3 ) 1 — — — — (2 ) — (7) (1) See Table 16.6 for detail. (2) All assets and liabilities transferred into level 3 were previously classified within level 2. (3) All assets and liabilities transferred out of level 3 are classified as level 2. (4) 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. (5) Included in net gains (losses) from trading activities in the income statement. (6) Included in net gains (losses) on debt securities in the income statement. (7) Included in mortgage banking and other noninterest income in the income statement. (8) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities). (9) Included in mortgage banking, trading activities, equity securities and other noninterest income in the income statement. (10) Included in net gains (losses) from equity securities in the income statement. (continued on following page) (continued from previous page) Table 16.6 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 first quarter 2018 . Table 16.6: Gross Purchases, Sales, Issuances and Settlements – Level 3 – Quarter ended March 31, 2018 (in millions) Purchases Sales Issuances Settlements Net Quarter ended March 31, 2018 Trading debt securities: Securities of U.S. states and political subdivisions $ — — — — — Collateralized loan obligations 182 (191 ) — (31 ) (40 ) Corporate debt securities 4 (1 ) — — 3 Other trading debt securities — — — — — Total trading debt securities 186 (192 ) — (31 ) (37 ) Available-for-sale debt securities: Securities of U.S. states and political subdivisions — (4 ) 10 (47 ) (41 ) Mortgage-backed securities: Residential — — — — — Commercial — — — (8 ) (8 ) Total mortgage-backed securities — — — (8 ) (8 ) Corporate debt securities — — — (1 ) (1 ) Collateralized loan and other debt obligations — — — (23 ) (23 ) Asset-backed securities: Other asset-backed securities — (8 ) 49 (107 ) (66 ) Total asset-backed securities — (8 ) 49 (107 ) (66 ) Total available-for-sale debt securities — (12 ) 59 (186 ) (139 ) Mortgage loans held for sale 27 (83 ) 58 (39 ) (37 ) Loans held for sale — (16 ) — — (16 ) Loans 1 — 4 (28 ) (23 ) Mortgage servicing rights (residential) (1) — (4 ) 573 — 569 Net derivative assets and liabilities: Interest rate contracts — — — 266 266 Commodity contracts — — — (24 ) (24 ) Equity contracts — — — 71 71 Foreign exchange contracts — — — 1 1 Credit contracts 3 (2 ) — (4 ) (3 ) Total derivative contracts 3 (2 ) — 310 311 Equity securities: Nonmarketable — (17 ) — (79 ) (96 ) Total equity securities — (17 ) — (79 ) (96 ) Other liabilities — — — — — (1) For more information on the changes in mortgage servicing rights, see Note 11 (Mortgage Banking Activities).
Fair Value, Assets and Liabilities Measured on Recurring Basis, Quantitative Information about Valuation Techniques and Unobservable Inputs	Table 16.7 and Table 16.8 provide quantitative information about the valuation techniques and significant unobservable inputs used in the valuation of substantially all of our Level 3 assets and liabilities measured at fair value on a recurring basis for which we use an internal model. The significant unobservable inputs for Level 3 assets and liabilities that are valued using fair values obtained from third party vendors are not included in the table, as the specific inputs applied are not provided by the vendor. In addition, the table excludes the valuation techniques and significant unobservable inputs for certain classes of Level 3 assets and liabilities measured using an internal model that we consider, both individually and in the aggregate, insignificant relative to our overall Level 3 assets and liabilities. We made this determination based upon an evaluation of each class, which considered the magnitude of the positions, nature of the unobservable inputs and potential for significant changes in fair value due to changes in those inputs. For information on how changes in significant unobservable inputs affect the fair values of Level 3 assets and liabilities, see Note 18 (Fair Values of Assets and Liabilities) to Financial Statements in our 2018 Form 10-K. Table 16.7: Valuation Techniques – Recurring Basis – Marc h 31, 2019 ($ in millions, except cost to service amounts) Fair Value Level 3 Valuation Technique(s) Significant Unobservable Input Range of Inputs Weighted Average (1) March 31, 2019 Trading and available-for-sale debt securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 427 Discounted cash flow Discount rate 1.8 - 6.4 % 3.0 43 Vendor priced Collateralized loan and other debt obligations (2) 275 Market comparable pricing Comparability adjustment (12.0 ) - 16.1 2.1 755 Vendor priced Corporate debt securities 225 Discounted cash flow Discount rate 2.0 14.9 8.5 64 Market comparable pricing Comparability adjustment (11.1 ) 15.3 (2.1 ) 129 Vendor priced Asset-backed securities: Diversified payment rights (3) 150 Discounted cash flow Discount rate 3.1 - 6.8 4.0 Other commercial and consumer 195 (4) Discounted cash flow Discount rate 4.5 - 5.4 4.6 Weighted average life 1.4 - 1.9 yrs 1.8 17 Vendor priced Mortgage loans held for sale (residential) 982 Discounted cash flow Default rate 0.0 - 16.6 % 0.8 Discount rate 2.6 - 6.4 5.3 Loss severity 0.0 - 48.7 27.9 Prepayment rate 4.2 - 13.7 5.6 16 Market comparable pricing Comparability adjustment (56.3 ) - (6.3 ) (38.0 ) Loans 225 (5) Discounted cash flow Discount rate 3.9 - 4.8 4.2 Prepayment rate 4.0 - 100.0 86.6 Loss severity 0.0 - 34.8 11.2 Mortgage servicing rights (residential) 13,336 Discounted cash flow Cost to service per loan (6) $ 63 - 508 103 Discount rate 6.9 - 13.8 % 7.6 Prepayment rate (7) 10.5 - 25.2 11.3 Net derivative assets and (liabilities): Interest rate contracts 43 Discounted cash flow Default rate 0.0 - 5.0 2.0 Loss severity 50.0 - 50.0 50.0 Prepayment rate 2.8 - 25.0 15.3 Interest rate contracts: derivative loan commitments 58 Discounted cash flow Fall-out factor 1.0 - 99.0 20.5 Initial-value servicing (37.3 ) - 67.2 bps 20.1 Equity contracts 120 Discounted cash flow Conversion factor (9.0 ) - 0.0 % (7.7 ) Weighted average life 1.3 - 3.8 yrs 2.2 (282 ) Option model Correlation factor (77.0 ) - 99.0 % 24.5 Volatility factor 6.5 - 100.0 19.0 Credit contracts 2 Market comparable pricing Comparability adjustment (42.5 ) - 30.2 (5.4 ) 47 Option model Credit spread 0.1 - 18.4 1.0 Loss severity 13.0 - 60.0 45.2 Nonmarketable equity securities 6,381 Market comparable pricing Comparability adjustment (22.5 ) - (6.5 ) (16.7 ) Insignificant Level 3 assets, net of liabilities 91 (8) Total level 3 assets, net of liabilities $ 23,299 (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 $755 million of collateralized debt obligations. (3) Securities backed by specified sources of current and future receivables generated from foreign originators. (4) Predominantly 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 $63 - $199 . (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 mortgage-backed securities, other trading positions, other liabilities and certain net derivative assets and liabilities, such as commodity contracts and foreign exchange contracts. (9) Consists of total Level 3 assets of $25.2 billion and total Level 3 liabilities of $1.9 billion , before netting of derivative balances. Table 16.8: Valuation Techniques – Recurring Basis – Dece mber 31, 2018 ($ 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, 2018 Trading and available-for-sale debt securities: Securities of U.S. states and political subdivisions: Government, healthcare and other revenue bonds $ 404 Discounted cash flow Discount rate 2.1 - 6.4 % 3.4 43 Vendor priced Collateralized loan and other debt obligations (2) 298 Market comparable pricing Comparability adjustment (13.5 ) - 22.1 3.2 739 Vendor priced Corporate debt securities 220 Discounted cash flow Discount rate 4.0 11.7 8.5 56 Market comparable pricing Comparability adjustment (11.3 ) 16.6 (1.4 ) 128 Vendor priced Asset-backed securities: Diversified payment rights (3) 171 Discounted cash flow Discount rate 3.4 - 6.2 4.4 Other commercial and consumer 198 (4) Discounted cash flow Discount rate 4.6 - 5.2 4.7 Weighted average life 1.1 - 1.5 yrs 1.1 20 Vendor priced Mortgage loans held for sale (residential) 982 Discounted cash flow Default rate 0.0 - 15.6 % 0.8 Discount rate 1.1 - 6.6 5.5 Loss severity — - 43.3 23.4 Prepayment rate 3.2 - 13.4 4.6 15 Market comparable pricing Comparability adjustment (56.3 ) - (6.3 ) (36.3 ) Loans 244 (5) Discounted cash flow Discount rate 3.4 - 6.4 4.2 Prepayment rate 2.9 - 100.0 87.2 Loss severity 0.0 - 34.8 10.2 Mortgage servicing rights (residential) 14,649 Discounted cash flow Cost to service per loan (6) $ 62 - 507 106 Discount rate 7.1 - 15.3 % 8.1 Prepayment rate (7) 9.0 - 23.5 9.9 Net derivative assets and (liabilities): Interest rate contracts (35 ) Discounted cash flow Default rate 0.0 - 5.0 2.0 Loss severity 50.0 - 50.0 50.0 Prepayment rate 2.8 - 25.0 13.8 Interest rate contracts: derivative loan commitments 60 Discounted cash flow Fall-out factor 1.0 - 99.0 19.4 Initial-value servicing (36.6 ) - 91.7 bps 18.5 Equity contracts 104 Discounted cash flow Conversion factor (9.3 ) - 0.0 % (7.8 ) Weighted average life 1.0 - 3.0 yrs 1.8 (121 ) Option model Correlation factor (77.0 ) - 99.0 % 21.6 Volatility factor 6.5 - 100.0 21.8 Credit contracts 3 Market comparable pricing Comparability adjustment (15.5 ) - 40.0 3.5 32 Option model Credit spread 0.9 - 21.5 1.3 Loss severity 13.0 - 60.0 45.2 Nonmarketable equity securities 5,468 Market comparable pricing Comparability adjustment (20.6 ) - (4.3 ) (15.8 ) Insignificant Level 3 assets, net of liabilities 93 (8) Total level 3 assets, net of liabilities $ 23,771 (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 $800 million of collateralized debt obligations. (3) Securities backed by specified sources of current and future receivables generated from foreign originators. (4) Predominantly 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 $62 - $204 . (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 mortgage-backed securities, other trading positions, other liabilities and certain net derivative assets and liabilities, such as commodity contracts and foreign exchange contracts. (9) Consists of total Level 3 assets of $25.3 billion and total Level 3 liabilities of $1.6 billion , before netting of derivative balances.
Fair Value, Assets Recorded at Fair Value on a Nonrecurring Basis	Table 16.9 provides the fair value hierarchy and fair value at the date of the nonrecurring fair value adjustment for all assets that were still held as of March 31, 2019 , and December 31, 2018 , and for which a nonrecurring fair value adjustment was recorded during the three months ended March 31, 2019 and year ended December 31, 2018 . Table 16.9: Fair Value on a Nonrecurring Basis March 31, 2019 December 31, 2018 (in millions) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Mortgage loans held for sale (LOCOM) (1) $ — 1,712 1,272 2,984 — 1,213 1,233 2,446 Loans held for sale — 5 — 5 — 313 — 313 Loans: Commercial — 147 — 147 — 339 — 339 Consumer — 117 — 117 — 346 1 347 Total loans (2) — 264 — 264 — 685 1 686 Nonmarketable equity securities (3) — 553 46 599 — 774 157 931 Other assets (4) — 169 — 169 — 149 6 155 Total assets at fair value on a nonrecurring basis $ — 2,703 1,318 4,021 — 3,134 1,397 4,531 (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) Consists of certain nonmarketable equity securities that are measured at fair value on a nonrecurring basis, including observable price adjustments for nonmarketable equity securities carried under the measurement alternative. (4) Includes the fair value of foreclosed real estate, other collateral owned and operating lease assets.
Changes in Fair Value of Assets Recorded at Fair Value on Nonrecurring Basis	Table 16.10 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 16.10: Change in Value of Assets with Nonrecurring Fair Value Adjustment Quarter ended March 31, (in millions) 2019 2018 Mortgage loans held for sale (LOCOM) $ 20 7 Loans held for sale — (82 ) Loans: Commercial (74 ) (81 ) Consumer (79 ) (107 ) Total loans (1) (153 ) (188 ) Nonmarketable equity securities (2) 149 208 Other assets (3) (18 ) (22 ) Total $ (2 ) (77 ) (1) Represents write-downs of loans based on the appraised value of the collateral. (2) Includes impairment losses for nonmarketable equity securities accounted for under the equity method and measurement alternative. Also includes observable price adjustments for nonmarketable equity securities accounted for under the measurement alternative. (3) 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.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Quantitative Information about Valuation Techniques and Unobservable Inputs	Table 16.11 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 16.11: Valuation Techniques – Nonrecurring Basis ($ in millions) Fair Value Level 3 Valuation Technique(s) (1) Significant Unobservable Inputs (1) Range of inputs Weighted Average (2) March 31, 2019 Residential mortgage loans held for sale (LOCOM) $ 1,272 (3) Discounted cash flow Default rate (4) 0.2 — 4.1 % 1.9 % Discount rate 1.5 — 8.5 4.0 Loss severity 0.4 — 70.3 1.7 Prepayment rate (5) 2.7 — 100.0 40.7 Nonmarketable equity securities — Discounted cash flow Discount rate — — — — Insignificant level 3 assets 46 Total $ 1,318 December 31, 2018 Residential mortgage loans held for sale (LOCOM) $ 1,233 (3) Discounted cash flow Default rate (4) 0.2 — 2.3 % 1.4 % Discount rate 1.5 — 8.5 4.0 Loss severity 0.5 — 66.0 1.7 Prepayment rate (5) 3.5 — 100.0 46.5 Nonmarketable equity securities 7 Discounted cash flow Discount rate 10.5 — 10.5 10.5 Insignificant level 3 assets 157 Total $ 1,397 (1) Refer to the narrative following Table 16.8 for a definition of the valuation technique(s) and significant unobservable inputs. (2) For residential MLHFS, weighted averages are calculated using the outstanding unpaid principal balance of the loans. (3) Consists of approximately $1.2 billion of government insured/guaranteed loans purchased from GNMA-guaranteed mortgage securitizations at both March 31, 2019 , and December 31, 2018 , and $26 million and $27 million , respectively, of other mortgage loans that are not government insured/guaranteed. (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 16.12 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 16.12: Fair Value Option March 31, 2019 December 31, 2018 (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 Mortgage loans held for sale: Total loans $ 11,091 10,883 208 11,771 11,573 198 Nonaccrual loans 128 157 (29 ) 127 158 (31 ) Loans 90 days or more past due and still accruing 7 9 (2 ) 7 9 (2 ) Loans held for sale: Total loans 998 1,056 (58 ) 1,469 1,536 (67 ) Nonaccrual loans 57 71 (14 ) 21 32 (11 ) Loans: Total loans 225 255 (30 ) 244 274 (30 ) Nonaccrual loans 166 196 (30 ) 179 208 (29 ) Equity securities (1) 6,381 N/A N/A 5,455 N/A N/A (1) Consists of nonmarketable equity securities carried at fair value.
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 16.13 by income statement line item. Amounts recorded as interest income are excluded from Table 16.13 . Table 16.13: Fair Value Option – Changes in Fair Value Included in Earnings 2019 2018 (in millions) Mortgage banking noninterest income Net gains (losses) from trading activities Net gains from equity securities Other noninterest income Mortgage banking noninterest income Net gains (losses) from trading activities Net gains Other noninterest income Quarter ended March 31, Mortgage loans held for sale $ 214 — — — (59 ) — — — Loans held for sale — 14 — 1 — 6 — — Loans — — — — — — — (1 ) Equity securities — — 926 — — — 101 — Other interests held (1) — (1 ) — — — (1 ) — — (1) Includes retained interests in securitizations.
Fair Value Option, Instrument Specific Credit Risk	Table 16.14 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 16.14: Fair Value Option – Gains/Losses Attributable to Instrument-Specific Credit Risk Quarter ended March 31, (in millions) 2019 2018 Gains (losses) attributable to instrument-specific credit risk: Mortgage loans held for sale $ (4 ) 1 Loans held for sale 14 6 Total $ 10 7
Fair Value, Estimates for Financial Instruments Excluding those Recorded at Fair Value on a Recurring Basis	Table 16.15 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 16.2 in this Note. The carrying amounts in the following table are recorded on the balance sheet under the indicated captions. 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 16.15: Fair Value Estimates for Financial Instruments Estimated fair value (in millions) Carrying amount Level 1 Level 2 Level 3 Total March 31, 2019 Financial assets Cash and due from banks (1) $ 20,650 20,650 — — 20,650 Interest-earning deposits with banks (1) 128,318 128,036 282 — 128,318 Federal funds sold and securities purchased under resale agreements (1) 98,621 — 98,621 — 98,621 Held-to-maturity debt securities 144,990 44,693 99,475 531 144,699 Mortgage loans held for sale 3,925 — 2,701 1,272 3,973 Loans held for sale 20 — 20 — 20 Loans, net (2) 919,308 — 46,649 873,169 919,818 Nonmarketable equity securities (cost method) 5,732 — — 5,765 5,765 Total financial assets $ 1,321,564 193,379 247,748 880,737 1,321,864 Financial liabilities Deposits (3) $ 138,494 — 110,129 28,346 138,475 Short-term borrowings 106,597 — 106,597 — 106,597 Long-term debt (4) 236,305 — 237,250 1,601 238,851 Total financial liabilities $ 481,396 — 453,976 29,947 483,923 December 31, 2018 Financial assets Cash and due from banks (1) $ 23,551 23,551 — — 23,551 Interest-earning deposits with banks (1) 149,736 149,542 194 — 149,736 Federal funds sold and securities purchased under resale agreements (1) 80,207 — 80,207 — 80,207 Held-to-maturity debt securities 144,788 44,339 97,275 501 142,115 Mortgage loans held for sale 3,355 — 2,129 1,233 3,362 Loans held for sale 572 — 572 — 572 Loans, net (2) 923,703 — 45,190 872,725 917,915 Nonmarketable equity securities (cost method) 5,643 — — 5,675 5,675 Total financial assets $ 1,331,555 217,432 225,567 880,134 1,323,133 Financial liabilities Deposits (3) $ 130,645 — 107,448 22,641 130,089 Short-term borrowings 105,787 — 105,789 — 105,789 Long-term debt (4) 229,008 — 225,904 2,230 228,134 Total financial liabilities $ 465,440 — 439,141 24,871 464,012 (1) Amounts consist of financial instruments for which carrying value approximates fair value. (2) Excludes lease financing with a carrying amount of $19.1 billion and $19.7 billion at March 31, 2019 , and December 31, 2018 , respectively. (3) Excludes deposit liabilities with no defined or contractual maturity of $1.1 trillion and $1.2 trillion at March 31, 2019 and December 31, 2018 , respectively. (4) Excludes capital lease obligations under capital leases of $34 million and $36 million at March 31, 2019 , and December 31, 2018 , respectively.

Preferred Stock (Tables)

Preferred Stock (Tables)	3 Months Ended
	Mar. 31, 2019
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 17.1: Preferred Stock Shares March 31, 2019 December 31, 2018 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 I Floating Class A Preferred Stock (1) 100,000 25,010 100,000 25,010 Series K Floating Non-Cumulative Perpetual Class A Preferred Stock (2) 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 25,000 27,600 ESOP Cumulative Convertible Preferred Stock (3) — 1,406,460 — 1,406,460 Total 9,586,770 9,586,770 (1) Series I preferred stock issuance relates to trust preferred securities. See Note 10 (Securitizations and Variable Interest Entities) in this Report for additional information. This issuance has a floating interest rate that is the greater of three-month LIBOR plus 0.93% and 5.56975%. (2) Floating rate for Preferred Stock, Series K, is three-month LIBOR plus 3.77%. (3) 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 17.2: Preferred Stock – Shares Issued and Carrying Value March 31, 2019 December 31, 2018 (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)(2) Floating Class A Preferred Stock 25,010 2,501 2,501 — 25,010 2,501 2,501 — Series K (1)(3) 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 3,967,995 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 — 27,600 690 690 — ESOP Cumulative Convertible Preferred Stock 1,406,460 1,407 1,407 — 1,406,460 1,407 1,407 — Total 9,377,211 $ 24,458 23,214 1,244 9,377,216 $ 24,458 23,214 1,244 (1) Preferred shares qualify as Tier 1 capital. (2) Floating rate for Preferred Stock, Series I, is the greater of three-month LIBOR plus 0.93% and 5.56975%. (3) Floating rate for Preferred Stock, Series K, is three-month LIBOR plus 3.77% .
ESOP Preferred Stock	Table 17.3: ESOP Preferred Stock Shares issued and outstanding Carrying value Adjustable dividend rate (in millions, except shares) Mar 31, Dec 31, Mar 31, Dec 31, Minimum Maximum ESOP Preferred Stock $1,000 liquidation preference per share 2018 336,945 336,945 337 337 7.00 % 8.00 % 2017 222,210 222,210 222 222 7.00 8.00 2016 233,835 233,835 234 234 9.30 10.30 2015 144,338 144,338 144 144 8.90 9.90 2014 174,151 174,151 174 174 8.70 9.70 2013 133,948 133,948 134 134 8.50 9.50 2012 77,634 77,634 78 78 10.00 11.00 2011 61,796 61,796 62 62 9.00 10.00 2010 (1) 21,603 21,603 22 22 9.50 10.50 Total ESOP Preferred Stock (2) 1,406,460 1,406,460 $ 1,407 1,407 Unearned ESOP shares (3) $ (1,502 ) (1,502 ) (1) In April 2019, all of the 2010 ESOP Preferred Stock was converted into common stock. (2) Additional paid-in capital included $95 million at both March 31, 2019 and December 31, 2018, related to ESOP preferred stock. (3) 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.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Table 18.1 presents our revenue by operating segment. The “Other” segment for each of the tables below includes the elimination of certain items that are included in more than one business segment, substantially all of which represents products and services for WIM customers served through Community Banking distribution channels. For additional description of our operating segments, including additional financial information and the underlying management accounting process, see Note 22 (Operating Segments). We adopted ASU 2014-09 – Revenue from Contracts with Customers on a modified retrospective basis as of January 1, 2018. For details on the impact of the adoption of this ASU, see Note 1 (Summary of Significant Accounting Policies) to Financial Statements in our 2018 Form 10-K. Table 18.1 : Revenue by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other (3) Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Net interest income (1) $ 7,248 7,195 4,534 4,532 1,101 1,112 (572 ) (601 ) 12,311 12,238 Noninterest income: Service charges on deposit accounts 610 639 483 534 4 4 (3 ) (4 ) 1,094 1,173 Trust and investment fees: Brokerage advisory, commissions and other fees 449 478 78 67 2,124 2,344 (458 ) (486 ) 2,193 2,403 Trust and investment management 210 233 114 113 676 743 (214 ) (239 ) 786 850 Investment banking (20 ) (10 ) 412 440 5 — (3 ) — 394 430 Total trust and investment fees 639 701 604 620 2,805 3,087 (675 ) (725 ) 3,373 3,683 Card fees 858 821 86 87 1 1 (1 ) (1 ) 944 908 Other fees: Lending related charges and fees (1)(2) 65 76 282 304 2 2 (2 ) (2 ) 347 380 Cash network fees 109 125 — 1 — — — — 109 126 Commercial real estate brokerage commissions — — 81 85 — — — — 81 85 Wire transfer and other remittance fees 64 63 48 52 2 2 (1 ) (1 ) 113 116 All other fees (1) 94 63 26 30 — — — — 120 93 Total other fees 332 327 437 472 4 4 (3 ) (3 ) 770 800 Mortgage banking (1) 641 842 68 93 (3 ) (3 ) 2 2 708 934 Insurance (1) 11 28 78 79 17 18 (10 ) (11 ) 96 114 Net gains (losses) from trading activities (1) 5 (1 ) 333 225 19 19 — — 357 243 Net gains on debt securities (1) 37 — 88 1 — — — — 125 1 Net gains from equity securities (1) 601 684 77 93 136 6 — — 814 783 Lease income (1) — — 443 455 — — — — 443 455 Other income of the segment (1) 768 594 (120 ) 88 (5 ) (6 ) (69 ) (74 ) 574 602 Total noninterest income 4,502 4,635 2,577 2,747 2,978 3,130 (759 ) (816 ) 9,298 9,696 Revenue $ 11,750 11,830 7,111 7,279 4,079 4,242 (1,331 ) (1,417 ) 21,609 21,934 (1) Most of our revenue is not within the scope of Accounting Standards Update (ASU) 2014-09 – Revenue from Contracts with Customers , and additional details are included in other footnotes to our financial statements. The scope explicitly excludes net interest income as well as many other revenues for financial assets and liabilities, including loans, leases, securities, and derivatives. (2) Represents combined amount of previously reported “Charges and fees on loans” and “Letters of credit fees”. (3) Includes the elimination of certain items that are included in more than one business segment, substantially all of which represents products and services for WIM customers served through Community Banking distribution channels.
Disaggregation of Revenue [Table Text Block]	Table 18.3 presents our brokerage advisory, commissions and other fees by operating segment. Table 18.3 : Brokerage Advisory, Commissions and Other Fees by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Asset-based revenue (1) $ 343 371 — — 1,580 1,743 (343 ) (371 ) 1,580 1,743 Transactional revenue 89 93 16 12 387 439 (98 ) (100 ) 394 444 Other revenue 17 14 62 55 157 162 (17 ) (15 ) 219 216 Brokerage advisory, commissions and other fees $ 449 478 78 67 2,124 2,344 (458 ) (486 ) 2,193 2,403 (1) We earned trailing commissions of $280 million and $331 million in first quarter 2019 and 2018 , respectively. Table 18.2 presents our service charges on deposit accounts by operating segment. Table 18.2 : Service Charges on Deposit Accounts by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Overdraft fees $ 417 412 1 2 — — — — 418 414 Account charges 193 227 482 532 4 4 (3 ) (4 ) 676 759 Service charges on deposit accounts $ 610 639 483 534 4 4 (3 ) (4 ) 1,094 1,173 Table 18.4 presents our trust and investment management fees by operating segment. Table 18.4 : Trust and Investment Management Fees by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Investment management fees $ 1 — — — 477 534 — — 478 534 Trust fees 209 221 82 86 168 188 (214 ) (239 ) 245 256 Other revenue — 12 32 27 31 21 — — 63 60 Trust and investment management fees $ 210 233 114 113 676 743 (214 ) (239 ) 786 850 Table 18.5 presents our card fees by operating segment. Table 18.5 : Card Fees by Operating Segment Quarter ended Mar 31, Community Banking Wholesale Banking Wealth and Investment Management Other Consolidated (in millions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Credit card interchange and network revenues (1) $ 189 171 86 87 1 1 (1 ) (1 ) 275 258 Debit card interchange and network revenues 507 479 — — — — — — 507 479 Late fees, cash advance fees, balance transfer fees, and annual fees 162 171 — — — — — — 162 171 Card fees (1) $ 858 821 86 87 1 1 (1 ) (1 ) 944 908 (1) The cost of credit card rewards and rebates of $354 million and $343 million for the quarters ended March 31, 2019 and 2018, respectively, are presented net against the related revenues.

Employee Benefits (Tables)

Employee Benefits (Tables)	3 Months Ended
	Mar. 31, 2019
Defined Benefit Plan [Abstract]
Net Periodic Benefit Cost	Table 19.1 presents the components of net periodic benefit cost. Table 19.1: Net Periodic Benefit Cost 2019 2018 Pension benefits Pension benefits (in millions) Qualified Non-qualified Other benefits Qualified Non-qualified Other benefits Quarter ended March 31, Service cost $ 3 — — 1 — — Interest cost (1) 105 6 5 98 5 5 Expected return on plan assets (1) (142 ) — (7 ) (160 ) — (7 ) Amortization of net actuarial loss (gain) (1) 37 2 (4 ) 33 3 (4 ) Amortization of prior service credit (1) — — (2 ) — — (3 ) Settlement loss (1) — 2 — — 3 — Net periodic benefit cost (income) $ 3 10 (8 ) (28 ) 11 (9 ) (1) Balances are reported in other noninterest expense on the consolidated statement of income.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Common Share Calculations	Table 20.1 shows earnings per common share and diluted earnings per common share and reconciles the numerator and denominator of both earnings per common share calculations. See Note 1 (Summary of Significant Accounting Policies) for discussion of share repurchases. Table 20.1: Earnings Per Common Share Calculations Quarter ended March 31, (in millions, except per share amounts) 2019 2018 Wells Fargo net income $ 5,860 5,136 Less: Preferred stock dividends and other 353 403 Wells Fargo net income applicable to common stock (numerator) $ 5,507 4,733 Earnings per common share Average common shares outstanding (denominator) 4,551.5 4,885.7 Per share $ 1.21 0.97 Diluted earnings per common share Average common shares outstanding 4,551.5 4,885.7 Add: Stock options 2.5 9.9 Restricted share rights 30.0 28.3 Warrants — 6.8 Diluted average common shares outstanding (denominator) 4,584.0 4,930.7 Per share $ 1.20 0.96
Outstanding Anti-Dilutive Options	Table 20.2 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 20.2: Outstanding Anti-Dilutive Options Weighted-average shares Quarter ended March 31, (in millions) 2019 2018 Options — 0.9
Dividends declared per common share	Table 20.3 presents dividends declared per common share. Table 20.3: Dividends Declared Per Common Share Quarter ended March 31, 2019 2018 Per common share 0.450 0.390

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2019
Cumulative Other Comprehensive Income Balances [Abstract]
Summary of Other Comprehensive Income	Table 21.1 provides the components of OCI, reclassifications to net income by income statement line item, and the related tax effects. Table 21.1: Summary of Other Comprehensive Income Quarter ended March 31, 2019 2018 (in millions) Before tax Tax effect Net of tax Before tax Tax effect Net of tax Debt securities: Net unrealized gains (losses) arising during the period $ 2,831 (695 ) 2,136 (3,443 ) 848 (2,595 ) Reclassification of net (gains) losses to net income: Interest income on debt securities (1) 45 (11 ) 34 69 (17 ) 52 Net gains on debt securities (125 ) 31 (94 ) (1 ) — (1 ) Other noninterest income (1 ) — (1 ) — — — Subtotal reclassifications to net income (81 ) 20 (61 ) 68 (17 ) 51 Net change 2,750 (675 ) 2,075 (3,375 ) 831 (2,544 ) Derivatives and hedging activities: Fair Value Hedges: Change in fair value of excluded components on fair value hedges (2) (26 ) 7 (19 ) 24 (6 ) 18 Cash Flow Hedges: Net unrealized losses arising during the period on cash flow hedges (9 ) 2 (7 ) (266 ) 66 (200 ) Reclassification of net losses to net income on cash flow hedges: Interest income on loans 78 (19 ) 59 60 (15 ) 45 Interest expense on long-term debt 1 — 1 — — — Subtotal reclassifications to net income 79 (19 ) 60 60 (15 ) 45 Net change 44 (10 ) 34 (182 ) 45 (137 ) Defined benefit plans adjustments: Net actuarial and prior service gains (losses) arising during the period (4 ) 1 (3 ) 6 (2 ) 4 Reclassification of amounts to non interest expense: Amortization of net actuarial loss 35 (8 ) 27 32 (8 ) 24 Settlements and other — — — — 1 1 Subtotal reclassifications to non interest expense 35 (8 ) 27 32 (7 ) 25 Net change 31 (7 ) 24 38 (9 ) 29 Foreign currency translation adjustments: Net unrealized gains (losses) arising during the period 42 (2 ) 40 (2 ) (5 ) (7 ) Net change 42 (2 ) 40 (2 ) (5 ) (7 ) Other comprehensive income (loss) $ 2,867 (694 ) 2,173 (3,521 ) 862 (2,659 ) Less: Other comprehensive income from noncontrolling interests, net of tax — — Wells Fargo other comprehensive income (loss), net of tax $ 2,173 (2,659 ) (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) Represents changes in fair value of cross-currency swaps attributable to changes in cross-currency basis spreads, which are excluded from the assessment of effectiveness recorded in other comprehensive income.
Cumulative OCI Balances	Table 21.2: Cumulative OCI Balances (in millions) Debt securities Derivatives and hedging activities Defined benefit plans adjustments Foreign currency translation adjustments Cumulative other compre- hensive income Quarter ended March 31, 2019 Balance, beginning of period $ (3,122 ) (685 ) (2,296 ) (233 ) (6,336 ) Transition adjustment (1) 481 — — — 481 Balance, January 1, 2019 (2,641 ) (685 ) (2,296 ) (233 ) (5,855 ) Net unrealized gains (losses) arising during the period 2,136 (26 ) (3 ) 40 2,147 Amounts reclassified from accumulated other comprehensive income (61 ) 60 27 — 26 Net change 2,075 34 24 40 2,173 Less: Other comprehensive income from noncontrolling interests — — — — — Balance, end of period $ (566 ) (651 ) (2,272 ) (193 ) (3,682 ) Quarter ended March 31, 2018 Balance, beginning of period $ 171 (418 ) (1,808 ) (89 ) (2,144 ) Transition adjustment (2) (118 ) — — — (118 ) Balance, January 1, 2018 53 (418 ) (1,808 ) (89 ) (2,262 ) Net unrealized gains (losses) arising during the period (2,595 ) (182 ) 4 (7 ) (2,780 ) Amounts reclassified from accumulated other comprehensive income 51 45 25 — 121 Net change (2,544 ) (137 ) 29 (7 ) (2,659 ) Less: Other comprehensive income from noncontrolling interests — — — — — Balance, end of period $ (2,491 ) (555 ) (1,779 ) (96 ) (4,921 ) (1) The transition adjustment relates to the adoption of ASU 2017-08 – Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities . See Note 1 (Summary of Significant Accounting Policies) for more information. (2) The transition adjustment relates to the adoption of ASU 2016-01 – Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . See Note 1 (Summary of Significant Accounting Policies) for more information.

Operating Segments (Tables)

Operating Segments (Tables)	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Operating Segments	Table 22.1 presents our results by operating segment. Table 22.1: Operating Segments Community Wholesale Banking Wealth and Investment Management Other (1) Consolidated Company (income/expense in millions, average balances in billions) 2019 2018 2019 2018 2019 2018 2019 2018 2019 2018 Quarter ended March 31, Net interest income (2) $ 7,248 7,195 4,534 4,532 1,101 1,112 (572 ) (601 ) 12,311 12,238 Provision (reversal of provision) for credit losses 710 218 134 (20 ) 4 (6 ) (3 ) (1 ) 845 191 Noninterest income 4,502 4,635 2,577 2,747 2,978 3,130 (759 ) (816 ) 9,298 9,696 Noninterest expense 7,689 8,702 3,838 3,978 3,303 3,290 (914 ) (928 ) 13,916 15,042 Income (loss) before income tax expense (benefit) 3,351 2,910 3,139 3,321 772 958 (414 ) (488 ) 6,848 6,701 Income tax expense (benefit) 424 809 369 448 192 239 (104 ) (122 ) 881 1,374 Net income (loss) before noncontrolling interests 2,927 2,101 2,770 2,873 580 719 (310 ) (366 ) 5,967 5,327 Less: Net income (loss) from noncontrolling interests 104 188 — (2 ) 3 5 — — 107 191 Net income (loss) (3) $ 2,823 1,913 2,770 2,875 577 714 (310 ) (366 ) 5,860 5,136 Average loans $ 458.2 470.5 476.4 465.1 74.4 73.9 (59.0 ) (58.5 ) 950.0 951.0 Average assets 1,015.4 1,061.9 844.5 829.2 83.2 84.2 (60.0 ) (59.4 ) 1,883.1 1,915.9 Average deposits 765.6 747.5 409.8 446.0 153.2 177.9 (66.5 ) (74.2 ) 1,262.1 1,297.2 (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 as well as interest credits for any funding of a segment available to be provided to other segments. The cost of liabilities includes actual interest expense on segment liabilities as well as funding charges for any funding provided from other segments. (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_2

Regulatory and Agency Capital Requirements (Tables)	3 Months Ended
	Mar. 31, 2019
Banking and Thrift [Abstract]
Regulatory And Agency Capital Requirements	Table 23.1 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 Standardized Approach applies assigned risk weights to broad risk categories, while the calculation of risk-weighted assets (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 capital rules are being phased-in effective January 1, 2014, through the end of 2021. Beginning January 1, 2018, the requirements for calculating CET1 and tier 1 capital, along with RWAs, became fully phased-in. Accordingly, the information presented reflects fully phased-in CET1 capital, tier 1 capital, and RWAs, but reflects total capital still in accordance with Transition Requirements . The Bank is an approved seller/servicer of mortgage loans and is required to maintain minimum levels of shareholders’ equity, as specified by various agencies, including the United States Department of Housing and Urban Development, GNMA, FHLMC and FNMA. At March 31, 2019 , 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 23.1: Regulatory Capital Information Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 (in millions, except ratios) Advanced Approach Standardized Approach Advanced Approach Standardized Advanced Approach Standardized Advanced Approach Standardized Regulatory capital: Common equity tier 1 $ 148,124 148,124 146,363 146,363 145,091 145,091 142,685 142,685 Tier 1 169,611 169,611 167,866 167,866 145,091 145,091 142,685 142,685 Total 199,851 208,042 198,798 207,041 158,074 165,836 155,558 163,380 Assets: Risk-weighted assets $ 1,176,360 1,243,125 1,177,350 1,247,210 1,056,290 1,143,763 1,058,653 1,154,182 Adjusted average assets (1) 1,854,367 1,854,367 1,850,299 1,850,299 1,647,785 1,647,785 1,652,009 1,652,009 Regulatory capital ratios: Common equity tier 1 capital 12.59 % 11.92 * 12.43 11.74 * 13.74 12.69 * 13.48 12.36 * Tier 1 capital 14.42 13.64 * 14.26 13.46 * 13.74 12.69 * 13.48 12.36 * Total capital 16.99 16.74 * 16.89 16.60 * 14.97 14.50 * 14.69 14.16 * Tier 1 leverage (1) 9.15 9.15 9.07 9.07 8.81 8.81 8.64 8.64 Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 Supplementary leverage: (2) Total leverage exposure $ 2,180,614 2,174,564 1,951,217 1,957,276 Supplementary leverage ratio 7.78 % 7.72 7.44 7.29 *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. (2) The supplementary leverage ratio consists of Tier 1 capital divided by total leverage exposure. Total leverage exposure consists of the total average on-balance sheet assets, plus off-balance sheet exposures, such as undrawn commitments and derivative exposures, less amounts permitted to be deducted from Tier 1 capital.
Minimum Required Regulatory Capital Ratios (Transition Requirements) [Table Text Block]	Table 23.2 presents the minimum required regulatory capital ratios under Transition Requirements to which the Company and the Bank were subject as of March 31, 2019 , and December 31, 2018 . Table 23.2: Minimum Required Regulatory Capital Ratios – Transition Requirements (1) Wells Fargo & Company Wells Fargo Bank, N.A. March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 Regulatory capital ratios: Common equity tier 1 capital 9.000 % 7.875 7.000 6.375 Tier 1 capital 10.500 9.375 8.500 7.875 Total capital 12.500 11.375 10.500 9.875 Tier 1 leverage 4.000 4.000 4.000 4.000 Supplementary leverage 5.000 5.000 6.000 6.000 (1) At March 31, 2019 , under transition requirements, the CET1, tier 1 and total capital minimum ratio requirements for Wells Fargo & Company include a capital conservation buffer of 2.500% and a global systemically important bank (G-SIB) surcharge of 2.000% . Only the 2.500% capital conservation buffer applies to the Bank at March 31, 2019 .

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2019	Dec. 31, 2018
Supplemental cash flow information - Noncash activities
Trading debt securities retained from securitization of MLHFS	$ 8,875	$ 8,776
Transfers from loans to MLHFS	1,292	1,297
Transfers from loans to LHFS	3	1,973
Transfers from available-for-sale debt securities to held-to-maturity debt securities	2,407	4,451
Operating lease ROU assets acquired with operating lease liabilities	5,127	$ 0
Summary Of Significant Accounting Policies Textuals [Abstract]
Operating lease ROU assets (lessee)	4,869			$ 0
Lease liabilities	5,405
Increase in operating leases	$ 227
Direct financing lease, risk strategy, residual asset	Our allowance for loan losses for financing leases considers both the collectability of the lease payments receivable as well as the estimated residual value of the leased asset. We typically purchase residual value insurance on our financing leases so that our risk of loss at lease termination will be less than 10% of the initial value of the lease. Our risk to declines in residual values is further mitigated by the diversity of leased assets in our lease portfolio. In addition, we have several channels for re-leasing or marketing those assets.
Private Forward Repurchase Transaction [Member]
Summary Of Significant Accounting Policies Textuals [Abstract]
Private forward repurchase contract	$ 0
Accounting Standards Update 2017-08 [Member]
Summary Of Significant Accounting Policies Textuals [Abstract]
Cumulative effect of new accounting principle			$ (111)
Accounting Standards Update 2017-08 [Member] | Cumulative other comprehensive income [Member]
Summary Of Significant Accounting Policies Textuals [Abstract]
Cumulative effect of new accounting principle				$ 481
Accounting Standards Update 2017-08 [Member] | Retained earnings [Member]
Summary Of Significant Accounting Policies Textuals [Abstract]
Cumulative effect of new accounting principle			(592)
Accounting Standards Update 2016-02 [Member]
Summary Of Significant Accounting Policies Textuals [Abstract]
Operating lease ROU assets (lessee)			4,900
Lease liabilities			5,600
Accounting Standards Update 2016-02 [Member] | Retained earnings [Member]
Summary Of Significant Accounting Policies Textuals [Abstract]
Cumulative effect of new accounting principle			$ 100

Business Combinations (Details)

Business Combinations (Details)	3 Months Ended
	Mar. 31, 2019business
Business Acquisitions and DIvestitures [Line Items]
Business acquisition, number completed during period	0
Pending Acquisition [Member]
Business Acquisitions and DIvestitures [Line Items]
Business acquisition, number completed during period	0

Cash, Loan and Dividend Restr_3

Cash, Loan and Dividend Restrictions (Details) - USD ($) $ / shares in Units, $ in Millions	Jun. 01, 2019	Apr. 23, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Cash, Loan and Dividend Restrictions [Line Items]
Average Cash Reserve Deposit Required And Made Federal Reserve Banks			$ 11,164		$ 12,428
Common Stock, Dividends, Per Share, Declared			$ 0.450	$ 0.390
Reserve Balance for Non-US Central Banks [Member]
Cash, Loan and Dividend Restrictions [Line Items]
Restricted Cash Equivalents			$ 746		517
Segregated for benefit brokerage customers under federal and other brokerage regulations [Member]
Cash, Loan and Dividend Restrictions [Line Items]
Restricted Cash Equivalents			913		1,135
Related to consolidated variable interest entities (VIEs) that can only be used to settle liabilities of VIEs [Member]
Cash, Loan and Dividend Restrictions [Line Items]
Restricted Cash Equivalents			24		$ 147
Bank Subsidiaries [Member]
Cash, Loan and Dividend Restrictions [Line Items]
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval			7,300
Nonbank Subsidiaries [Member]
Cash, Loan and Dividend Restrictions [Line Items]
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval			$ 24,900
Subsequent Event [Member]
Cash, Loan and Dividend Restrictions [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.45
Dividends Payable, Date Declared		Apr. 23, 2019
Dividends Payable, Date to be Paid	Jun. 1, 2019

Trading Activities, Assets and

Trading Activities, Assets and Liabilities (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Trading Assets and Liabilities [Line Items]
Trading debt securities		$ 70,378	$ 69,989
Trading equity securities		20,933	19,449
Loans held for sale	[1]	1,018	2,041
Derivative assets		34,949	34,560
Net amounts in consolidated balance sheet, assets		11,238	10,770
Total trading assets		101,502	100,316
Gross trading derivative liabilities		33,417	32,047
Net amounts in consolidated balance sheet, liabilities		7,393	8,499
Total trading liabilities		27,770	27,259
Held for trading [Member]
Trading Assets and Liabilities [Line Items]
Loans held for sale		998	1,469
Derivative assets		30,002	29,216
Netting, derivative assets (1)		(20,809)	(19,807)
Net amounts in consolidated balance sheet, assets		9,193	9,409
Short sales		21,586	19,720
Gross trading derivative liabilities		28,994	28,717
Netting, derivative liabilities (1)		(22,810)	(21,178)
Net amounts in consolidated balance sheet, liabilities		$ 6,184	$ 7,539
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Trading Activities, Net Interes

Trading Activities, Net Interest Income and Net Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Interest Income and Net Gains (Losses) on Trading Activities [Line Items]
Equity Securities, interest income	$ 210	$ 231
Loans held for sale, interest income	24	24
Total interest income	17,003	15,347
Net interest income	12,311	12,238
Net gains from trading activities	357	243
Held for trading [Member]
Net Interest Income and Net Gains (Losses) on Trading Activities [Line Items]
Debt Securities, interest income	793	631
Equity Securities, interest income	115	141
Loans held for sale, interest income	23	8
Total interest income	931	780
Total interest expense	136	128
Net interest income	795	652
Debt securities, net gains (losses)	688	(499)
Equity securities, net gains (losses)	2,067	(469)
Loans held for sale, net gain (losses)	14	8
Derivatives (3)	(2,412)	1,203
Net gains from trading activities	357	243
Total trading-related net interest and noninterest income	$ 1,152	$ 895

AFS and HTM Debt Securities, Ma

AFS and HTM Debt Securities, Major Categories (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale debt securities:
Amortized Cost	$ 267,246	$ 272,471
Gross unrealized gains	2,467	1,659
Gross unrealized losses	(1,614)	(4,218)
Available-for-sale, at fair value	268,099	269,912
Held-to-maturity debt securities:
Held-to-maturity securities, Amortized Cost	144,990	144,788
Gross unrealized gains	606	146
Gross unrealized losses	(897)	(2,819)
Held-to-maturity, at fair value	144,699	142,115
Total AFS and HTM Debt securities:
Amortized Cost	412,236	417,259
Gross unrealized gains	3,073	1,805
Gross unrealized losses	(2,511)	(7,037)
Fair value	412,798	412,027
Held-to-maturity, at fair value	144,699	142,115
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale debt securities:
Amortized Cost	15,168	13,451
Gross unrealized gains	4	3
Gross unrealized losses	(66)	(106)
Available-for-sale, at fair value	15,106	13,348
Held-to-maturity debt securities:
Held-to-maturity securities, Amortized Cost	44,758	44,751
Gross unrealized gains	85	4
Gross unrealized losses	(150)	(415)
Held-to-maturity, at fair value	44,693	44,340
Total AFS and HTM Debt securities:
Held-to-maturity, at fair value	44,693	44,340
Securities of U.S. states and political subdivisions [Member]
Available-for-sale debt securities:
Amortized Cost	48,566	48,994
Gross unrealized gains	1,194	716
Gross unrealized losses	(60)	(446)
Available-for-sale, at fair value	49,700	49,264
Held-to-maturity debt securities:
Held-to-maturity securities, Amortized Cost	6,163	6,286
Gross unrealized gains	102	30
Gross unrealized losses	(15)	(116)
Held-to-maturity, at fair value	6,250	6,200
Total AFS and HTM Debt securities:
Held-to-maturity, at fair value	6,250	6,200
Securities of U.S. states and political subdivisions [Member] | Nontaxable Preferred Debt Securities [Member]
Available-for-sale debt securities:
Amortized Cost	5,600	6,300
Available-for-sale, at fair value	5,600	6,300
Mortgage-backed securities [Member]
Available-for-sale debt securities:
Amortized Cost	156,946	162,819
Gross unrealized gains	823	551
Gross unrealized losses	(1,278)	(3,167)
Available-for-sale, at fair value	156,491	160,203
Federal agencies [Member]
Available-for-sale debt securities:
Amortized Cost	151,182	155,974
Gross unrealized gains	749	369
Gross unrealized losses	(1,268)	(3,140)
Available-for-sale, at fair value	150,663	153,203
Held-to-maturity debt securities:
Held-to-maturity securities, Amortized Cost	94,009	93,685
Gross unrealized gains	419	112
Gross unrealized losses	(732)	(2,288)
Held-to-maturity, at fair value	93,696	91,509
Total AFS and HTM Debt securities:
Held-to-maturity, at fair value	93,696	91,509
Residential [Member]
Available-for-sale debt securities:
Amortized Cost	1,432	2,638
Gross unrealized gains	24	142
Gross unrealized losses	0	(5)
Available-for-sale, at fair value	1,456	2,775
Commercial [Member]
Available-for-sale debt securities:
Amortized Cost	4,332	4,207
Gross unrealized gains	50	40
Gross unrealized losses	(10)	(22)
Available-for-sale, at fair value	4,372	4,225
Corporate debt securities [Member]
Available-for-sale debt securities:
Amortized Cost	6,188	6,230
Gross unrealized gains	204	131
Gross unrealized losses	(38)	(90)
Available-for-sale, at fair value	6,354	6,271
Collateralized loan obligations [Member]
Available-for-sale debt securities:
Amortized Cost	35,304	35,581
Gross unrealized gains	169	158
Gross unrealized losses	(158)	(396)
Available-for-sale, at fair value	35,315	35,343
Held-to-maturity debt securities:
Held-to-maturity securities, Amortized Cost	60	66
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Held-to-maturity, at fair value	60	66
Total AFS and HTM Debt securities:
Held-to-maturity, at fair value	60	66
Collateralized debt obligations [Member]
Available-for-sale debt securities:
Amortized Cost	621	662
Available-for-sale, at fair value	755	800
Other [Member]
Available-for-sale debt securities:
Amortized Cost	5,074	5,396
Gross unrealized gains	73	100
Gross unrealized losses	(14)	(13)
Available-for-sale, at fair value	$ 5,133	$ 5,483

AFS and HTM Debt Securities, Gr

AFS and HTM Debt Securities, Gross Unrealized Losses and Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	$ (180)	$ (598)
Less than 12 months, Fair value, available-for-sale	28,303	54,683
12 months or more, Gross unrealized losses, available-for-sale	(1,434)	(3,620)
12 months or more, Fair value, available-for-sale	108,807	128,631
Total, Gross unrealized losses, available-for-sale	(1,614)	(4,218)
Total Fair Value, available for sale	137,110	183,314
Held-to-maturity debt securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	0	(12)
Less than 12 months, Fair value, held-to-maturity	0	6,128
12 months or more, Gross unrealized losses, held-to-maturity	(897)	(2,807)
12 months or more, Fair value, held-to-maturity	96,357	122,816
Total, Gross unrealized losses, held-to-maturity	(897)	(2,819)
Total, Fair value, held-to-maturity	96,357	128,944
Total AFS and HTM debt securities:
Less than 12 months, Gross unrealized losses, investment securities	(180)	(610)
Less than 12 months, Fair value, investment securities	28,303	60,811
12 months or more, Gross unrealized losses, investment securities	(2,331)	(6,427)
12 months or more, Fair value, investment securities	205,164	251,447
Total, Gross unrealized losses, investment securities	(2,511)	(7,037)
Total, Fair value, investment securities	233,467	312,258
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	0	(1)
Less than 12 months, Fair value, available-for-sale	0	498
12 months or more, Gross unrealized losses, available-for-sale	(66)	(105)
12 months or more, Fair value, available-for-sale	6,220	6,204
Total, Gross unrealized losses, available-for-sale	(66)	(106)
Total Fair Value, available for sale	6,220	6,702
Held-to-maturity debt securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	0	(3)
Less than 12 months, Fair value, held-to-maturity	0	895
12 months or more, Gross unrealized losses, held-to-maturity	(150)	(412)
12 months or more, Fair value, held-to-maturity	30,379	41,083
Total, Gross unrealized losses, held-to-maturity	(150)	(415)
Total, Fair value, held-to-maturity	30,379	41,978
Securities of U.S. states and political subdivisions [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(13)	(73)
Less than 12 months, Fair value, available-for-sale	4,027	9,746
12 months or more, Gross unrealized losses, available-for-sale	(47)	(373)
12 months or more, Fair value, available-for-sale	3,612	9,017
Total, Gross unrealized losses, available-for-sale	(60)	(446)
Total Fair Value, available for sale	7,639	18,763
Held-to-maturity debt securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	0	(4)
Less than 12 months, Fair value, held-to-maturity	0	598
12 months or more, Gross unrealized losses, held-to-maturity	(15)	(112)
12 months or more, Fair value, held-to-maturity	1,663	3,992
Total, Gross unrealized losses, held-to-maturity	(15)	(116)
Total, Fair value, held-to-maturity	1,663	4,590
Mortgage-backed securities [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(12)	(65)
Less than 12 months, Fair value, available-for-sale	2,934	13,349
12 months or more, Gross unrealized losses, available-for-sale	(1,266)	(3,102)
12 months or more, Fair value, available-for-sale	95,811	112,400
Total, Gross unrealized losses, available-for-sale	(1,278)	(3,167)
Total Fair Value, available for sale	98,745	125,749
Federal agencies [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(5)	(42)
Less than 12 months, Fair value, available-for-sale	1,392	10,979
12 months or more, Gross unrealized losses, available-for-sale	(1,263)	(3,098)
12 months or more, Fair value, available-for-sale	95,706	112,252
Total, Gross unrealized losses, available-for-sale	(1,268)	(3,140)
Total Fair Value, available for sale	97,098	123,231
Held-to-maturity debt securities:
Less than 12 months, Gross unrealized losses, held-to-maturity	0	(5)
Less than 12 months, Fair value, held-to-maturity	0	4,635
12 months or more, Gross unrealized losses, held-to-maturity	(732)	(2,283)
12 months or more, Fair value, held-to-maturity	64,315	77,741
Total, Gross unrealized losses, held-to-maturity	(732)	(2,288)
Total, Fair value, held-to-maturity	64,315	82,376
Residential [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	0	(3)
Less than 12 months, Fair value, available-for-sale	0	398
12 months or more, Gross unrealized losses, available-for-sale	0	(2)
12 months or more, Fair value, available-for-sale	0	69
Total, Gross unrealized losses, available-for-sale	0	(5)
Total Fair Value, available for sale	0	467
Commercial [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(7)	(20)
Less than 12 months, Fair value, available-for-sale	1,542	1,972
12 months or more, Gross unrealized losses, available-for-sale	(3)	(2)
12 months or more, Fair value, available-for-sale	105	79
Total, Gross unrealized losses, available-for-sale	(10)	(22)
Total Fair Value, available for sale	1,647	2,051
Corporate debt securities [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(17)	(64)
Less than 12 months, Fair value, available-for-sale	736	1,965
12 months or more, Gross unrealized losses, available-for-sale	(21)	(26)
12 months or more, Fair value, available-for-sale	373	298
Total, Gross unrealized losses, available-for-sale	(38)	(90)
Total Fair Value, available for sale	1,109	2,263
Collateralized loan and other debt obligations [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(131)	(388)
Less than 12 months, Fair value, available-for-sale	19,572	28,306
12 months or more, Gross unrealized losses, available-for-sale	(27)	(8)
12 months or more, Fair value, available-for-sale	2,513	553
Total, Gross unrealized losses, available-for-sale	(158)	(396)
Total Fair Value, available for sale	22,085	28,859
Held-to-maturity debt 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	0
12 months or more, Fair value, held-to-maturity	0	0
Total, Gross unrealized losses, held-to-maturity	0	0
Total, Fair value, held-to-maturity	0	0
Other [Member]
Available-for-sale debt securities:
Less than 12 months, Gross unrealized losses, available-for-sale	(7)	(7)
Less than 12 months, Fair value, available-for-sale	1,034	819
12 months or more, Gross unrealized losses, available-for-sale	(7)	(6)
12 months or more, Fair value, available-for-sale	278	159
Total, Gross unrealized losses, available-for-sale	(14)	(13)
Total Fair Value, available for sale	$ 1,312	$ 978

AFS and HTM Debt Securities, Un

AFS and HTM Debt Securities, Unrealized Loss Position, by Credit Rating (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale debt securities:
Gross unrealized losses	$ (1,614)	$ (4,218)
Available-for-sale, at fair value	268,099	269,912
Held-to-maturity debt securities:
Gross unrealized losses	(897)	(2,819)
Fair value	144,699	142,115
Total AFS and HTM debt securities:
Gross unrealized losses	(2,511)	(7,037)
Fair value	412,798	412,027
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale debt securities:
Gross unrealized losses	(66)	(106)
Available-for-sale, at fair value	15,106	13,348
Held-to-maturity debt securities:
Gross unrealized losses	(150)	(415)
Fair value	44,693	44,340
Securities of U.S. states and political subdivisions [Member]
Available-for-sale debt securities:
Gross unrealized losses	(60)	(446)
Available-for-sale, at fair value	49,700	49,264
Held-to-maturity debt securities:
Gross unrealized losses	(15)	(116)
Fair value	6,250	6,200
Mortgage-backed securities [Member]
Available-for-sale debt securities:
Gross unrealized losses	(1,278)	(3,167)
Available-for-sale, at fair value	156,491	160,203
Federal agencies [Member]
Available-for-sale debt securities:
Gross unrealized losses	(1,268)	(3,140)
Available-for-sale, at fair value	150,663	153,203
Held-to-maturity debt securities:
Gross unrealized losses	(732)	(2,288)
Fair value	93,696	91,509
Residential [Member]
Available-for-sale debt securities:
Gross unrealized losses	0	(5)
Available-for-sale, at fair value	1,456	2,775
Commercial [Member]
Available-for-sale debt securities:
Gross unrealized losses	(10)	(22)
Available-for-sale, at fair value	4,372	4,225
Corporate debt securities [Member]
Available-for-sale debt securities:
Gross unrealized losses	(38)	(90)
Available-for-sale, at fair value	6,354	6,271
Collateralized loan and other debt obligations [Member]
Available-for-sale debt securities:
Gross unrealized losses	(158)	(396)
Available-for-sale, at fair value	35,315	35,343
Held-to-maturity debt securities:
Gross unrealized losses	0	0
Fair value	60	66
Other [Member]
Available-for-sale debt securities:
Gross unrealized losses	(14)	(13)
Available-for-sale, at fair value	5,133	5,483
Unrated Investment Grade Securities [Member]
Total AFS and HTM debt securities:
Gross unrealized losses	(11)	(20)
Fair value	4,000	5,200
Investment grade [Member]
Available-for-sale debt securities:
Gross unrealized losses	(1,564)	(4,113)
Available-for-sale, at fair value	135,945	181,050
Held-to-maturity debt securities:
Gross unrealized losses	(896)	(2,809)
Fair value	96,227	128,545
Total AFS and HTM debt securities:
Gross unrealized losses	(2,460)	(6,922)
Fair value	232,172	309,595
Investment grade [Member] | Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale debt securities:
Gross unrealized losses	(66)	(106)
Available-for-sale, at fair value	6,220	6,702
Held-to-maturity debt securities:
Gross unrealized losses	(150)	(415)
Fair value	30,379	41,978
Investment grade [Member] | Securities of U.S. states and political subdivisions [Member]
Available-for-sale debt securities:
Gross unrealized losses	(48)	(425)
Available-for-sale, at fair value	7,412	18,447
Held-to-maturity debt securities:
Gross unrealized losses	(15)	(116)
Fair value	1,663	4,590
Investment grade [Member] | Mortgage-backed securities [Member]
Available-for-sale debt securities:
Gross unrealized losses	(1,276)	(3,162)
Available-for-sale, at fair value	98,734	125,525
Investment grade [Member] | Federal agencies [Member]
Available-for-sale debt securities:
Gross unrealized losses	(1,268)	(3,140)
Available-for-sale, at fair value	97,098	123,231
Held-to-maturity debt securities:
Gross unrealized losses	(731)	(2,278)
Fair value	64,185	81,977
Investment grade [Member] | Residential [Member]
Available-for-sale debt securities:
Gross unrealized losses	0	(2)
Available-for-sale, at fair value	0	295
Investment grade [Member] | Commercial [Member]
Available-for-sale debt securities:
Gross unrealized losses	(8)	(20)
Available-for-sale, at fair value	1,636	1,999
Investment grade [Member] | Corporate debt securities [Member]
Available-for-sale debt securities:
Gross unrealized losses	(8)	(17)
Available-for-sale, at fair value	455	791
Investment grade [Member] | Collateralized loan and other debt obligations [Member]
Available-for-sale debt securities:
Gross unrealized losses	(158)	(396)
Available-for-sale, at fair value	22,085	28,859
Held-to-maturity debt securities:
Gross unrealized losses	0	0
Fair value	0	0
Investment grade [Member] | Other [Member]
Available-for-sale debt securities:
Gross unrealized losses	(8)	(7)
Available-for-sale, at fair value	1,039	726
Non-investment grade [Member]
Available-for-sale debt securities:
Gross unrealized losses	(50)	(105)
Available-for-sale, at fair value	1,165	2,264
Held-to-maturity debt securities:
Gross unrealized losses	(1)	(10)
Fair value	130	399
Total AFS and HTM debt securities:
Gross unrealized losses	(51)	(115)
Fair value	1,295	2,663
Non-investment grade [Member] | Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale debt securities:
Gross unrealized losses	0	0
Available-for-sale, at fair value	0	0
Held-to-maturity debt 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 debt securities:
Gross unrealized losses	(12)	(21)
Available-for-sale, at fair value	227	316
Held-to-maturity debt securities:
Gross unrealized losses	0	0
Fair value	0	0
Non-investment grade [Member] | Mortgage-backed securities [Member]
Available-for-sale debt securities:
Gross unrealized losses	(2)	(5)
Available-for-sale, at fair value	11	224
Non-investment grade [Member] | Federal agencies [Member]
Available-for-sale debt securities:
Gross unrealized losses	0	0
Available-for-sale, at fair value	0	0
Held-to-maturity debt securities:
Gross unrealized losses	(1)	(10)
Fair value	130	399
Non-investment grade [Member] | Residential [Member]
Available-for-sale debt securities:
Gross unrealized losses	0	(3)
Available-for-sale, at fair value	0	172
Non-investment grade [Member] | Commercial [Member]
Available-for-sale debt securities:
Gross unrealized losses	(2)	(2)
Available-for-sale, at fair value	11	52
Non-investment grade [Member] | Corporate debt securities [Member]
Available-for-sale debt securities:
Gross unrealized losses	(30)	(73)
Available-for-sale, at fair value	654	1,472
Non-investment grade [Member] | Collateralized loan and other debt obligations [Member]
Available-for-sale debt securities:
Gross unrealized losses	0	0
Available-for-sale, at fair value	0	0
Held-to-maturity debt securities:
Gross unrealized losses	0	0
Fair value	0	0
Non-investment grade [Member] | Other [Member]
Available-for-sale debt securities:
Gross unrealized losses	(6)	(6)
Available-for-sale, at fair value	$ 273	$ 252

AFS and HTM Debt Securities, Co

AFS and HTM Debt Securities, Contractual Maturities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 268,099	$ 269,912
Weighted average yield contractual maturities, Total, available-for-sale	3.73%
Due within 1 year, Contractual maturities, available-for-sale	$ 6,257
Percentage of weighted average yield, Due within 1 year, available-for-sale	2.61%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 22,320
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	2.81%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 21,649
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.85%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 217,873
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.85%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 144,990	144,788
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.88%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%
Due in 1-5 years, Contractual maturities, held-to-maturity, cost	$ 32,447
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	2.05%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 13,822
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.58%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 98,721
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	3.19%
Held-to-maturity securities, fair value:
Contractual maturities, Total amount, held-to-maturity, fair value	$ 144,699	142,115
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	32,330
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	13,911
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	98,458
Securities of U.S. Treasury and federal agencies [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 15,106	13,348
Weighted average yield contractual maturities, Total, available-for-sale	1.93%
Due within 1 year, Contractual maturities, available-for-sale	$ 2,154
Percentage of weighted average yield, Due within 1 year, available-for-sale	1.63%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 12,903
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	1.98%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 49
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	1.89%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due after 10 years, available-for-sale	0.00%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 44,758	44,751
Weighted average yield contractual maturities, Total, held-to-maturity, cost	2.12%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%
Due in 1-5 years, Contractual maturities, held-to-maturity, cost	$ 32,362
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	2.04%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 12,396
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	2.32%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	0.00%
Held-to-maturity securities, fair value:
Contractual maturities, Total amount, held-to-maturity, fair value	$ 44,693	44,340
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	32,245
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	12,448
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	0
Securities of U.S. states and political subdivisions [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 49,700	49,264
Weighted average yield contractual maturities, Total, available-for-sale	4.81%
Due within 1 year, Contractual maturities, available-for-sale	$ 3,665
Percentage of weighted average yield, Due within 1 year, available-for-sale	2.81%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 5,986
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	3.39%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 4,274
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.47%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 35,775
Percentage of weighted average yield, Due after 10 years, available-for-sale	5.41%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 6,163	6,286
Weighted average yield contractual maturities, Total, held-to-maturity, cost	4.92%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%
Due in 1-5 years, Contractual maturities, held-to-maturity, cost	$ 70
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	6.03%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 1,366
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	4.92%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 4,727
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	4.90%
Held-to-maturity securities, fair value:
Contractual maturities, Total amount, held-to-maturity, fair value	$ 6,250	6,200
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	70
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	1,403
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	4,777
Mortgage-backed securities [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 156,491	160,203
Weighted average yield contractual maturities, Total, available-for-sale	3.44%
Due within 1 year, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 153
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	3.51%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 2,160
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.73%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 154,178
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.45%
Federal agencies [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 150,663	153,203
Weighted average yield contractual maturities, Total, available-for-sale	3.43%
Due within 1 year, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 152
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	3.50%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 1,819
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.57%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 148,692
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.44%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 94,009	93,685
Weighted average yield contractual maturities, Total, held-to-maturity, cost	3.11%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%
Due in 1-5 years, Contractual maturities, held-to-maturity, cost	$ 15
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	3.82%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	0.00%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 93,994
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	3.11%
Held-to-maturity securities, fair value:
Contractual maturities, Total amount, held-to-maturity, fair value	$ 93,696	91,509
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	15
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	0
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	93,681
Residential [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 1,456	2,775
Weighted average yield contractual maturities, Total, available-for-sale	2.97%
Due within 1 year, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 1
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	5.17%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	0.00%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 1,455
Percentage of weighted average yield, Due after 10 years, available-for-sale	2.96%
Commercial [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 4,372	4,225
Weighted average yield contractual maturities, Total, available-for-sale	3.72%
Due within 1 year, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	0.00%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 341
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	3.60%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 4,031
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.73%
Corporate debt securities [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 6,354	6,271
Weighted average yield contractual maturities, Total, available-for-sale	5.09%
Due within 1 year, Contractual maturities, available-for-sale	$ 430
Percentage of weighted average yield, Due within 1 year, available-for-sale	5.78%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 2,509
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	5.25%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 2,795
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	4.70%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 620
Percentage of weighted average yield, Due after 10 years, available-for-sale	5.67%
Collateralized loan and other debt obligations [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 35,315	35,343
Weighted average yield contractual maturities, Total, available-for-sale	4.15%
Due within 1 year, Contractual maturities, available-for-sale	$ 0
Percentage of weighted average yield, Due within 1 year, available-for-sale	0.00%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 18
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	4.80%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 10,889
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	4.24%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 24,408
Percentage of weighted average yield, Due after 10 years, available-for-sale	4.11%
Held-to-maturity securities:
Held-to-maturity securities, Amortized Cost	$ 60	66
Weighted average yield contractual maturities, Total, held-to-maturity, cost	3.97%
Due within 1 year, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due In 1 year, held-to-maturity, cost	0.00%
Due in 1-5 years, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due In 1-5 years, held-to-maturity, cost	0.00%
Due in 5-10 years, Contractual maturities, held-to-maturity, cost	$ 60
Percentage of weighted average yield, Due In 5-10 years, held-to-maturity, cost	3.97%
Due in 10 years or more, Contractual maturities, held-to-maturity, cost	$ 0
Percentage of weighted average yield, Due after 10 years, held-to-maturity, cost	0.00%
Held-to-maturity securities, fair value:
Contractual maturities, Total amount, held-to-maturity, fair value	$ 60	66
Due within 1 year, Contractual maturities, held-to-maturity, fair value	0
Due in 1-5 years, Contractual maturities, held-to-maturity, fair value	0
Due in 5-10 years, Contractual maturities, held-to-maturity, fair value	60
Due in 10 years or more, Contractual maturities, held-to-maturity, fair value	0
Other [Member]
Available-for-sale securities:
Contractual maturities, Total amount, available-for-sale	$ 5,133	$ 5,483
Weighted average yield contractual maturities, Total, available-for-sale	3.17%
Due within 1 year, Contractual maturities, available-for-sale	$ 8
Percentage of weighted average yield, Due within 1 year, available-for-sale	5.82%
Due in 1-5 years, Contractual maturities, available-for-sale	$ 751
Percentage of weighted average yield, Due in 1-5 years, available-for-sale	4.04%
Due in 5-10 years, Contractual maturities, available-for-sale	$ 1,482
Percentage of weighted average yield, Due In 5-10 years, available-for-sale	2.08%
Due in 10 years or more, Contractual maturities, available-for-sale	$ 2,892
Percentage of weighted average yield, Due after 10 years, available-for-sale	3.50%

AFS and HTM Debt Securities, Re

AFS and HTM Debt Securities, Realized Gains and Losses (Details) - Debt securities [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Available-For-Sale Debt Securities, Realized Gain (Loss) [Abstract]
Gross realized gains	$ 173	$ 21
Gross realized losses	(3)	(10)
OTTI write-downs	(45)	(10)
Net realized gains from available-for-sale debt securities	$ 125	$ 1

AFS and HTM Debt Securities, OT

AFS and HTM Debt Securities, OTTI Included in Earnings (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Schedule Of Available-For-Sale Debt Securities [Line Items]
Other-than-temporary Impairment Loss, Debt Securities, Held-to-maturity, before Tax	$ 0	$ 0
Debt securities [Member]
OTTI write-downs included in earnings (Abstract)
Total debt securities (1)	45	10
Securities of U.S. states and political subdivisions [Member]
OTTI write-downs included in earnings (Abstract)
Total debt securities (1)	29	2
Residential [Member]
OTTI write-downs included in earnings (Abstract)
Total debt securities (1)	0	1
Commercial [Member]
OTTI write-downs included in earnings (Abstract)
Total debt securities (1)	14	7
Corporate debt securities [Member]
OTTI write-downs included in earnings (Abstract)
Total debt securities (1)	$ 2	$ 0

AFS and HTM Debt Securities, _2

AFS and HTM Debt Securities, OTTI Debt Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Debt securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	$ 45	$ 10
Total changes to OCI for non-credit-related OTTI	0	7
Total OTTI losses recorded on debt securities	45	17
Securities of U.S. states and political subdivisions [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	29	2
Total changes to OCI for non-credit-related OTTI	0	(2)
Residential [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	0	1
Total changes to OCI for non-credit-related OTTI	(1)	(1)
Commercial [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	14	7
Total changes to OCI for non-credit-related OTTI	1	10
Credit-related OTTI [Member] | Debt securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	16	9
Intent-to-sell OTTI [Member] | Debt securities [Member]
OTTI on debt securities (Abstract)
Total recorded as part of gross realized losses	$ 29	$ 1

AFS and HTM Debt Securities, Cr

AFS and HTM Debt Securities, Credit Loss Component (Details) - Debt securities [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Credit loss recognized, beginning of period	$ 562	$ 742
Additions:
For securities with initial credit impairments	2	0
For securities with previous credit impairments	14	9
Total additions	16	9
Reductions:
For securities sold, matured, or intended/required to be sold	(346)	(101)
For recoveries of previous credit impairments	0	(1)
Total reductions	(346)	(102)
Credit loss recognized, end of period	$ 232	$ 649

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses, Loans Outstanding (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Deferred Income		$ 466	$ 1,300
Loans	[1]	948,249	953,110
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		512,226	513,405
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		349,134	350,199
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		122,113	121,014
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		21,857	22,496
Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		19,122	19,696
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		436,023	439,705
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		284,545	285,065
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		33,099	34,398
Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		38,279	39,025
Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		44,913	45,069
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		35,187	36,148
Geographic Distribution, Foreign [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		72,512	71,465
Geographic Distribution, Foreign [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		63,158	62,564
Geographic Distribution, Foreign [Member] | Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		7,049	6,731
Geographic Distribution, Foreign [Member] | Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		1,138	1,011
Geographic Distribution, Foreign [Member] | Commercial Lease Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		$ 1,167	$ 1,159
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses, Significant Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	$ 332	$ 256
Sales	(600)	(460)
Transfers to MLHFS/LHFS	(3)	(1,973)
Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	329	256
Sales	(421)	(460)
Transfers to MLHFS/LHFS	(3)	(420)
Total Consumer [Member]
Loans and Allowance for Credit Losses, Significant Activity [Abstract]
Purchases	3	0
Sales	(179)	0
Transfers to MLHFS/LHFS	$ 0	$ (1,553)

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses, Commitments to Lend (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Temporary Advance Arrangements	$ 91,000	$ 91,000
Total unfunded credit commitments	568,487	558,701
Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	328,156	330,492
Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	7,453	6,984
Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	15,748	16,400
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	351,357	353,876
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	217,130	204,825
Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	39,915	29,736
Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	37,854	37,719
Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	112,238	109,840
Other revolving credit and installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total unfunded credit commitments	27,123	27,530
International [Member] | Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Letters of Credit International	$ 1,200	$ 919

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses, Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 10,707	$ 11,960
Provision for credit losses	845	191
Interest income on certain impaired loans	(39)	(43)
Loan charge-offs	(1,063)	(1,156)
Loan recoveries	368	415
Net loan charge-offs	(695)	(741)
Other	3	(54)
Allowance for credit losses, ending balance	10,821	11,313
Components:
Allowance for loan losses			$ 9,900	$ 9,775	$ 10,373
Allowance for unfunded credit commitments			921		940
Total allowance for credit losses	$ 10,707	$ 11,960	$ 10,821	10,707	$ 11,313
Net loan charge-offs (annualized) as a percentage of average total loans	0.30%	0.32%
Allowance for loan losses as a percentage of total loans			1.04%		1.10%
Allowance for credit losses as a percentage of total loans			1.14%		1.19%
Total Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 6,417	$ 6,632
Provision for credit losses	164	169
Interest income on certain impaired loans	(11)	(11)
Loan charge-offs	(200)	(183)
Loan recoveries	55	105
Net loan charge-offs	(145)	(78)
Other	3	(4)
Allowance for credit losses, ending balance	6,428	6,708
Components:
Total allowance for credit losses	6,417	6,632	$ 6,428	6,417	$ 6,708
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(176)	(164)
Loan recoveries	43	79
Commercial real estate mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(12)	(2)
Loan recoveries	6	17
Commercial Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(1)	0
Loan recoveries	3	4
Commercial Lease Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(11)	(17)
Loan recoveries	3	5
Total Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	4,290	5,328
Provision for credit losses	681	22
Interest income on certain impaired loans	(28)	(32)
Loan charge-offs	(863)	(973)
Loan recoveries	313	310
Net loan charge-offs	(550)	(663)
Other	0	(50)
Allowance for credit losses, ending balance	4,393	4,605
Components:
Total allowance for credit losses	4,290	5,328	$ 4,393	$ 4,290	$ 4,605
Real estate 1-4 family first mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(43)	(41)
Loan recoveries	55	59
Real estate 1-4 family junior lien mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(34)	(47)
Loan recoveries	43	55
Credit Card [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(437)	(405)
Loan recoveries	85	73
Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(187)	(300)
Loan recoveries	96	92
Other revolving credit and installment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loan charge-offs	(162)	(180)
Loan recoveries	$ 34	$ 31

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses, Allowance Activity by Portfolio Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	$ 10,707	$ 11,960
Provision for credit losses	845	191
Interest income on certain impaired loans	(39)	(43)
Loan charge-offs	(1,063)	(1,156)
Loan recoveries	368	415
Net loan charge-offs	(695)	(741)
Other	3	(54)
Allowance for credit losses, ending balance	10,821	11,313
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	6,417	6,632
Provision for credit losses	164	169
Interest income on certain impaired loans	(11)	(11)
Loan charge-offs	(200)	(183)
Loan recoveries	55	105
Net loan charge-offs	(145)	(78)
Other	3	(4)
Allowance for credit losses, ending balance	6,428	6,708
Total Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, beginning balance	4,290	5,328
Provision for credit losses	681	22
Interest income on certain impaired loans	(28)	(32)
Loan charge-offs	(863)	(973)
Loan recoveries	313	310
Net loan charge-offs	(550)	(663)
Other	0	(50)
Allowance for credit losses, ending balance	$ 4,393	$ 4,605

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses, Allowance by Credit Impairment Methodology (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		$ 9,311	$ 9,264
Allowance for Credit Losses, Individually evaluated		1,510	1,443
Total allowance for credit losses		10,821	10,707	$ 11,313	$ 11,960
Financing Receivable, Collectively evaluated		928,389	931,754
Financing Receivable, Individually evaluated		16,660	16,347
Loans	[1]	948,249	953,110
Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		5,863	5,903
Allowance for Credit Losses, Individually evaluated		565	514
Total allowance for credit losses		6,428	6,417	6,708	6,632
Financing Receivable, Collectively evaluated		508,379	510,180
Financing Receivable, Individually evaluated		3,847	3,221
Loans		512,226	513,405
Total Consumer [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Allowance for Credit Losses, Collectively evaluated		3,448	3,361
Allowance for Credit Losses, Individually evaluated		945	929
Total allowance for credit losses		4,393	4,290	$ 4,605	$ 5,328
Financing Receivable, Collectively evaluated		420,010	421,574
Financing Receivable, Individually evaluated		12,813	13,126
Loans		436,023	439,705
PCI Loans Carrying Value [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Financing Receivable, Recorded Investment, Current		3,200	5,009
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		0	4
PCI Loans Carrying Value [Member] | Total Consumer [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Financing Receivable, Recorded Investment, Current		3,200	5,005
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Total allowance for credit losses		0	0
SEC Schedule, 12-09, Allowance, Credit Loss [Member] | Commercial Portfolio Segment [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Total allowance for credit losses		0	0
SEC Schedule, 12-09, Allowance, Credit Loss [Member] | Total Consumer [Member]
Loans and Allowance for Credit Losses, by Credit Impairment Method [Abstract]
Total allowance for credit losses		$ 0	$ 0
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses, Loans by Credit Quality Indicator, Commercial (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Abstract]
Loans	[1]	$ 948,249	$ 953,110
Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		512,226	513,405
Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		349,134	350,199
Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		122,113	121,014
Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		21,857	22,496
Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		19,122	19,696
Loans Excluding Purchased Credit-Impaired Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Financing Receivable, Recorded Investment, Nonaccrual Status		6,905	6,496
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Mortgage and Construction Loans [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		5,000
Financing Receivable, Recorded Investment, Nonaccrual Status		735
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		512,226	513,401
Financing Receivable, Recorded Investment, Nonaccrual Status		2,797	2,188
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		490,605	492,804
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		21,621	20,597
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		349,134	350,195
Financing Receivable, Recorded Investment, Nonaccrual Status		1,986	1,486
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		333,502	335,412
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		15,632	14,783
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		122,113	121,014
Financing Receivable, Recorded Investment, Nonaccrual Status		699	580
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		117,353	116,514
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		4,760	4,500
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		21,857	22,496
Financing Receivable, Recorded Investment, Nonaccrual Status		36	32
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		21,612	22,207
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		245	289
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		19,122	19,696
Financing Receivable, Recorded Investment, Nonaccrual Status		76	90
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member] | Pass [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		18,138	18,671
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member] | Criticized [Member]
Loans and Leases Receivable Disclosure [Abstract]
Loans		984	1,025
PCI Loans Carrying Value [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		3,200	5,009
PCI Loans Carrying Value [Member] | Total Commercial [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		0	4
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		0	4
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		0	0
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		0	0
PCI Loans Carrying Value [Member] | Commercial Lease Financing Receivable [Member]
Loans and Leases Receivable Disclosure [Abstract]
PCI loans		$ 0	$ 0
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses, Loans by Delinquency Status, Commercial (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
By delinquency status:
Loans	[1]	$ 948,249	$ 953,110
Total Commercial [Member]
By delinquency status:
Loans		512,226	513,405
Commercial and Industrial Loans [Member]
By delinquency status:
Loans		349,134	350,199
Commercial real estate mortgage [Member]
By delinquency status:
Loans		122,113	121,014
Commercial Real Estate Construction [Member]
By delinquency status:
Loans		21,857	22,496
Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		19,122	19,696
Loans Excluding Purchased Credit-Impaired Loans [Member]
By delinquency status:
Over 90 DPD and still accruing		7,870	8,704
Nonaccrual loans		6,905	6,496
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		512,226	513,401
Nonaccrual loans		2,797	2,188
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Loans		349,134	350,195
Nonaccrual loans		1,986	1,486
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Loans		122,113	121,014
Nonaccrual loans		699	580
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Loans		21,857	22,496
Nonaccrual loans		36	32
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Loans		19,122	19,696
Nonaccrual loans		76	90
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans		3,200	5,009
PCI Loans Carrying Value [Member] | Total Commercial [Member]
By delinquency status:
PCI loans		0	4
PCI Loans Carrying Value [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
PCI loans		0	4
PCI Loans Carrying Value [Member] | Commercial real estate mortgage [Member]
By delinquency status:
PCI loans		0	0
PCI Loans Carrying Value [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
PCI loans		0	0
PCI Loans Carrying Value [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
PCI loans		0	0
Current-29 days past due (DPD) and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		508,354	510,188
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		346,696	348,158
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		121,196	120,176
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		21,591	22,411
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		18,871	19,443
30-89 days past due and still accruing [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Loans		1,008	931
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		410	508
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		198	207
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		225	53
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		175	163
Loans Excluding Government Insured or Guaranteed Loans [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By delinquency status:
Over 90 DPD and still accruing		874	979
Loans Excluding Government Insured or Guaranteed Loans [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
By delinquency status:
Over 90 DPD and still accruing		67	94
Loans Excluding Government Insured or Guaranteed Loans [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
By delinquency status:
Over 90 DPD and still accruing		42	43
Loans Excluding Government Insured or Guaranteed Loans [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial real estate mortgage [Member]
By delinquency status:
Over 90 DPD and still accruing		20	51
Loans Excluding Government Insured or Guaranteed Loans [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
By delinquency status:
Over 90 DPD and still accruing		5	0
Loans Excluding Government Insured or Guaranteed Loans [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Lease Financing Receivable [Member]
By delinquency status:
Over 90 DPD and still accruing		$ 0	$ 0
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses, Loans by Delinquency Status, Consumer (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
By delinquency status:
Loans	[1]	$ 948,249	$ 953,110
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		807	885
By delinquency status:
Loans		$ 436,023	$ 439,705
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		0.20%	0.30%
Loans		$ 284,545	$ 285,065
Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		33,099	34,398
Credit Card [Member]
By delinquency status:
Loans		38,279	39,025
Automobile [Member]
By delinquency status:
Loans		44,913	45,069
Other revolving credit and installment [Member]
By delinquency status:
Loans		35,187	36,148
Loans Excluding Purchased Credit-Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		7,870	8,704
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		6,996	7,725
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		432,823	434,700
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		281,361	280,077
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		33,083	34,381
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		38,279	39,025
Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		44,913	45,069
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		35,187	36,148
PCI Loans Carrying Value [Member]
By delinquency status:
PCI loans		3,200	5,009
PCI Loans Carrying Value [Member] | Total Consumer [Member]
By delinquency status:
PCI loans		3,200	5,005
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
PCI loans		3,184	4,988
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
PCI loans		16	17
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 30 Days Past Due [Member] | PCI Loans Carrying Value [Member] | Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance, percent past due		19.00%	18.00%
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Loans Government Guaranteed Or Insured [Member]
By delinquency status:
Loans		$ 7,000	$ 7,700
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		2,200	2,400
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		414,510	414,931
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		266,098	263,881
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		32,373	33,644
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		37,334	38,008
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		43,836	43,604
Current-29 days past due (DPD) [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		34,869	35,794
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		2,839	3,130
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		1,441	1,411
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		243	247
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		251	292
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		777	1,040
30-59 DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		127	140
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		1,105	1,288
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		494	549
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		118	126
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		193	212
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		222	314
60 to 89 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		78	87
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		623	712
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		231	257
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		70	74
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		174	192
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		74	109
90-119 Days Past Due [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		74	80
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		656	651
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		223	225
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		78	77
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		327	320
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		4	2
120-179 DPD member [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		24	27
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		899	1,056
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		683	822
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		201	213
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		0	1
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		0	0
180 plus DPD [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		15	20
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		11,966	12,688
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		11,966	12,688
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
Loans held at fair value [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By delinquency status:
Loans		225	244
Loans held at fair value [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By delinquency status:
Loans		225	244
Loans held at fair value [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Loans		0	0
Loans held at fair value [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By delinquency status:
Loans		0	0
Loans held at fair value [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By delinquency status:
Loans		0	0
Loans held at fair value [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By delinquency status:
Loans		$ 0	$ 0
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses, Loans by FICO Score, Consumer (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
By FICO:
Loans	[1]	$ 948,249	$ 953,110
Total Consumer [Member]
By FICO:
Loans		436,023	439,705
Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		284,545	285,065
Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		33,099	34,398
Credit Card [Member]
By FICO:
Loans		38,279	39,025
Automobile [Member]
By FICO:
Loans		44,913	45,069
Other revolving credit and installment [Member]
By FICO:
Loans		35,187	36,148
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		432,823	434,700
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		281,361	280,077
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		33,083	34,381
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		38,279	39,025
Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		44,913	45,069
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		35,187	36,148
PCI Loans Carrying Value [Member]
By FICO:
PCI loans		3,200	5,009
PCI Loans Carrying Value [Member] | Total Consumer [Member]
By FICO:
PCI loans		3,200	5,005
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
PCI loans		3,184	4,988
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
PCI loans		16	17
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		16,258	16,787
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		4,106	4,273
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		1,410	1,454
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		3,150	3,292
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		6,907	7,071
FICO less than 600 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		685	697
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		11,539	11,901
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		2,843	2,974
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		979	994
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		2,615	2,777
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		4,412	4,431
FICO 600-639 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		690	725
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		21,776	22,219
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		5,813	5,810
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		1,829	1,898
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		6,173	6,464
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		6,209	6,225
FICO 640-679 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		1,752	1,822
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		36,931	37,659
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		13,406	13,568
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		3,775	3,908
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		9,206	9,445
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		7,279	7,354
FICO 680-719 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		3,265	3,384
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		50,872	51,778
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		26,943	27,258
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		5,130	5,323
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		7,769	7,949
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		6,795	6,853
FICO 720-759 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		4,235	4,395
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		78,894	80,004
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		56,626	57,193
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		5,967	6,315
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		5,082	5,227
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		5,958	5,947
FICO 760-799 [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		5,261	5,322
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		186,920	183,959
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		154,956	151,465
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		12,724	13,190
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		3,759	3,794
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		7,239	7,099
FICO 800 or more [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		8,242	8,411
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		8,756	8,576
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		4,477	4,604
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
By FICO:
Loans		1,269	1,299
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
By FICO:
Loans		525	77
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Automobile [Member]
By FICO:
Loans		114	89
No FICO available [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
By FICO:
Loans		$ 2,371	$ 2,507
No FICO available [Member] | PCI Loans Carrying Value [Member] | Total Consumer [Member]
By FICO:
Unpaid principal balance, percent of FICO score		13.00%	15.00%
FICO not required [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		$ 8,686	$ 8,885
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		8,686	8,885
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
By FICO:
Loans		12,191	12,932
Government Insured or Guaranteed [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
By FICO:
Loans		12,191	12,932
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
FICO less than 680 [Member] | PCI Loans Carrying Value [Member] | Total Consumer [Member]
By FICO:
Unpaid principal balance, percent of FICO score		43.00%	45.00%
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Loans and Allowance for Cred_13

Loans and Allowance for Credit Losses, Loans by Loan to Value Ratio, Consumer (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
High Value Properties, Threshold		$ 1
By LTV/CLTV:
Loans	[1]	948,249	$ 953,110
Residential Mortgage [Member]
By LTV/CLTV:
Loans		317,644	319,463
Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		314,444	314,458
Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
Loans		284,545	285,065
Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		281,361	280,077
Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
Loans		33,099	34,398
Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		33,083	34,381
Total Consumer [Member]
By LTV/CLTV:
Loans		436,023	439,705
Total Consumer [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		432,823	434,700
PCI Loans Carrying Value [Member]
By LTV/CLTV:
PCI loans		3,200	5,009
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
By LTV/CLTV:
PCI loans		3,184	4,988
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
By LTV/CLTV:
PCI loans		16	17
PCI Loans Carrying Value [Member] | Residential Mortgage [Member]
By LTV/CLTV:
PCI loans		3,200	5,005
PCI Loans Carrying Value [Member] | Total Consumer [Member]
By LTV/CLTV:
PCI loans		3,200	5,005
LTV 0-60% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		160,299	163,419
LTV 0-60% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		145,143	147,666
LTV 0-60% [Member] | Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		15,156	15,753
LTV 60.01-80% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		116,775	115,660
LTV 60.01-80% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		105,991	104,477
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		10,784	11,183
LTV 80.01-100% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		20,202	17,246
LTV 80.01-100% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		15,477	12,372
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		4,725	4,874
LTV 100.01-120% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		2,666	2,807
LTV 100.01-120% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		1,184	1,211
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		1,482	1,596
LTV greater than 120% [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		1,022	1,062
LTV greater than 120% [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		472	484
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		$ 550	$ 578
LTV greater than 80% [Member] | PCI Loans Carrying Value [Member] | Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Percent of Debt-to-Value Ratio		10.00%	10.00%
No LTV/CLTV available [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		$ 1,289	$ 1,332
No LTV/CLTV available [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		903	935
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		386	397
Government Insured Or Guaranteed [Member] | Residential Mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		12,191	12,932
Government Insured Or Guaranteed [Member] | Real estate 1-4 family first mortgage [Member] | Loans Excluding Purchased Credit-Impaired Loans [Member]
By LTV/CLTV:
Loans		12,191	12,932
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]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Loans and Allowance for Cred_14

Loans and Allowance for Credit Losses, Nonaccrual (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Residential Real Estate [Member]
Nonaccrual Loans [Abstract]
Mortgage Loans in Process of Foreclosure, Amount	$ 4,200	$ 4,600
Government Guaranteed Mortgage Loans upon Foreclosure Receivable [Member]
Nonaccrual Loans [Abstract]
Mortgage Loans in Process of Foreclosure, Amount	3,000	3,200
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	6,905	6,496
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Commercial [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	2,797	2,188
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial and Industrial Loans [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	1,986	1,486
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial real estate mortgage [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	699	580
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Real Estate Construction [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	36	32
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Lease Financing Receivable [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	76	90
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Consumer [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	4,108	4,308
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Real estate 1-4 family first mortgage [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	3,026	3,183
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Real estate 1-4 family junior lien mortgage [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	916	945
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Automobile [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	116	130
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Other revolving credit and installment [Member]
Nonaccrual Loans [Abstract]
Nonaccrual loans	$ 50	$ 50

Loans and Allowance for Cred_15

Loans and Allowance for Credit Losses, 90 Days or More Past Due and Still Accruing (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Total Consumer [Member]
Loans 90 days or more past due and still accruing:
90 days or more past due and still accruing	$ 807	$ 885
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	243	370
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	7,870	8,704
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	6,996	7,725
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	874	979
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	67	94
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	43
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	20	51
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	5	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	807	885
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	117	124
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	28	32
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	502	513
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	68	114
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	$ 92	$ 102

Loans and Allowance for Cred_16

Loans and Allowance for Credit Losses, Impaired Loans (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Impaired Loans [Abstract]
Unpaid principal balance	$ 19,588	$ 19,464
Impaired loans	16,660	16,347
Impaired loans with related allowance for credit losses	9,594	9,078
Related allowance for credit losses	1,510	1,443
Loans and Leases Receivable, Impaired, Commitment to Lend	570	513
Trial modifications [Member]
Impaired Loans [Abstract]
Impaired loans	136	149
Consumer Real Estate Loans Government Guaranteed Or Insured [Member]
Impaired Loans [Abstract]
Impaired loans	1,300	1,300
Total Commercial [Member]
Impaired Loans [Abstract]
Unpaid principal balance	5,009	4,505
Impaired loans	3,847	3,221
Impaired loans with related allowance for credit losses	3,494	2,897
Related allowance for credit losses	565	514
Commercial and Industrial Loans [Member]
Impaired Loans [Abstract]
Unpaid principal balance	3,493	3,057
Impaired loans	2,569	2,030
Impaired loans with related allowance for credit losses	2,271	1,730
Related allowance for credit losses	364	319
Commercial real estate mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	1,310	1,228
Impaired loans	1,126	1,032
Impaired loans with related allowance for credit losses	1,071	1,009
Related allowance for credit losses	161	154
Commercial Real Estate Construction [Member]
Impaired Loans [Abstract]
Unpaid principal balance	87	74
Impaired loans	56	47
Impaired loans with related allowance for credit losses	56	46
Related allowance for credit losses	10	9
Commercial Lease Financing Receivable [Member]
Impaired Loans [Abstract]
Unpaid principal balance	119	146
Impaired loans	96	112
Impaired loans with related allowance for credit losses	96	112
Related allowance for credit losses	30	32
Total Consumer [Member]
Impaired Loans [Abstract]
Unpaid principal balance	14,579	14,959
Impaired loans	12,813	13,126
Impaired loans with related allowance for credit losses	6,100	6,181
Related allowance for credit losses	945	929
Real estate 1-4 family first mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	11,953	12,309
Impaired loans	10,440	10,738
Impaired loans with related allowance for credit losses	4,354	4,420
Related allowance for credit losses	526	525
Real estate 1-4 family junior lien mortgage [Member]
Impaired Loans [Abstract]
Unpaid principal balance	1,843	1,886
Impaired loans	1,658	1,694
Impaired loans with related allowance for credit losses	1,093	1,133
Related allowance for credit losses	181	183
Credit Card [Member]
Impaired Loans [Abstract]
Unpaid principal balance	474	449
Impaired loans	473	449
Impaired loans with related allowance for credit losses	473	449
Related allowance for credit losses	188	172
Automobile [Member]
Impaired Loans [Abstract]
Unpaid principal balance	145	153
Impaired loans	85	89
Impaired loans with related allowance for credit losses	42	43
Related allowance for credit losses	8	8
Other revolving credit and installment [Member]
Impaired Loans [Abstract]
Unpaid principal balance	164	162
Impaired loans	157	156
Impaired loans with related allowance for credit losses	138	136
Related allowance for credit losses	$ 42	$ 41

Loans and Allowance for Cred_17

Loans and Allowance for Credit Losses, Impaired Loans, Average Recorded Investment and Interest Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	$ 16,568	$ 18,385
Recognized interest income	242	281
Interest income:
Cash basis of accounting	59	81
Other	183	200
Total Commercial [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	3,561	3,835
Recognized interest income	40	65
Commercial and Industrial Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	2,346	2,404
Recognized interest income	23	36
Commercial real estate mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	1,055	1,244
Recognized interest income	15	28
Commercial Real Estate Construction [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	52	58
Recognized interest income	2	1
Commercial Lease Financing Receivable [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	108	129
Recognized interest income	0	0
Total Consumer [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	13,007	14,550
Recognized interest income	202	216
Real estate 1-4 family first mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	10,624	12,073
Recognized interest income	153	172
Real estate 1-4 family junior lien mortgage [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	1,679	1,889
Recognized interest income	26	29
Credit Card [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	461	370
Recognized interest income	15	10
Automobile [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	87	85
Recognized interest income	4	3
Other revolving credit and installment [Member]
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average recorded investment	156	133
Recognized interest income	$ 4	$ 2

Loans and Allowance for Cred_18

Loans and Allowance for Credit Losses, Troubled Debt Restructurings Modifications by Type (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Modifications [Line Items]
Net loans	$ 938,349		$ 943,335
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1,139	$ 1,179
Financial effects of modifications
Charge-offs	$ 21	$ 17
Weighted average interest rate reduction	9.44%	7.55%
Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 643	$ 643
Financial effects of modifications
Charge-offs	$ 13	$ 6
Weighted average interest rate reduction	0.73%	1.15%
Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 565	$ 497
Financial effects of modifications
Charge-offs	$ 13	$ 6
Weighted average interest rate reduction	0.68%	1.07%
Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 75	$ 104
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	0.95%	1.24%
Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 3	$ 3
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	0.00%	0.00%
Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 39
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	0.00%	0.00%
Total Consumer [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 496	$ 536
Financial effects of modifications
Charge-offs	$ 8	$ 11
Weighted average interest rate reduction	10.27%	8.20%
Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 332	$ 362
Financial effects of modifications
Charge-offs	$ 1	$ 1
Weighted average interest rate reduction	1.95%	2.40%
Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 38	$ 37
Financial effects of modifications
Charge-offs	$ 1	$ 1
Weighted average interest rate reduction	2.29%	2.22%
Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 97	$ 86
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	13.20%	11.32%
Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 15	$ 19
Financial effects of modifications
Charge-offs	$ 6	$ 9
Weighted average interest rate reduction	5.38%	6.48%
Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 14	$ 17
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	7.58%	7.94%
Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 15
Financial effects of modifications
Charge-offs	$ 0	$ 0
Weighted average interest rate reduction	0.00%	0.00%
Modification to principal [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 39	$ 48
Modification to principal [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Total Consumer [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	39	48
Modification to principal [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	35	46
Modification to principal [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	2	1
Modification to principal [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	2	1
Modification to principal [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification to principal [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Contractual Interest Rate Reduction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	136	138
Contractual Interest Rate Reduction [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	13	15
Contractual Interest Rate Reduction [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	11	9
Contractual Interest Rate Reduction [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	2	6
Contractual Interest Rate Reduction [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Contractual Interest Rate Reduction [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Contractual Interest Rate Reduction [Member] | Total Consumer [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	123	123
Contractual Interest Rate Reduction [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	10
Contractual Interest Rate Reduction [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	11	8
Contractual Interest Rate Reduction [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	97	86
Contractual Interest Rate Reduction [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1	4
Contractual Interest Rate Reduction [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	11	15
Contractual Interest Rate Reduction [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modifications, other concessions [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	964	993
Modifications, other concessions [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	630	628
Modifications, other concessions [Member] | Commercial and Industrial Loans [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	554	488
Modifications, other concessions [Member] | Commercial real estate mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	73	98
Modifications, other concessions [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	3
Modifications, other concessions [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	39
Modifications, other concessions [Member] | Total Consumer [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	334	365
Modifications, other concessions [Member] | Real estate 1-4 family first mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	294	306
Modifications, other concessions [Member] | Real estate 1-4 family junior lien mortgage [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	25	28
Modifications, other concessions [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modifications, other concessions [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	12	14
Modifications, other concessions [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	3	2
Modifications, other concessions [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	15
Modification of recorded investment related to interest rate reduction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	153	164
Modification of recorded investment related to interest rate reduction [Member] | Commercial Portfolio Segment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	13	15
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	11	9
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	2	6
Modification of recorded investment related to interest rate reduction [Member] | Commercial Real Estate Construction [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification of recorded investment related to interest rate reduction [Member] | Commercial Lease Financing Receivable [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Modification of recorded investment related to interest rate reduction [Member] | Total Consumer [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	140	149
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	19	35
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	12	9
Modification of recorded investment related to interest rate reduction [Member] | Credit Card [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	97	86
Modification of recorded investment related to interest rate reduction [Member] | Automobile [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	1	4
Modification of recorded investment related to interest rate reduction [Member] | Other revolving credit and installment [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	11	15
Modification of recorded investment related to interest rate reduction [Member] | Trial modifications [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	0	0
Troubled Debt Restructuring Outstanding Balance [Member]
Financing Receivable, Modifications [Line Items]
Net loans	15,300		$ 15,500
Loans remodified [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	360	503
Principal Forgiveness [Member]
Primary modification type
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 3	$ 3

Loans and Allowance for Cred_19

Loans and Allowance for Credit Losses, Troubled Debt Restructurings, Current Defaults (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	$ 96	$ 152
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	54	112
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	23	86
Commercial real estate mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	28	26
Commercial Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	3	0
Total Consumer [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	42	40
Real estate 1-4 family first mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	11	18
Real estate 1-4 family junior lien mortgage [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	5	5
Credit Card [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	21	13
Automobile [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	3	3
Other revolving credit and installment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment of defaults	$ 2	$ 1

Loans and Allowance for Cred_20

Loans and Allowance for Credit Losses, PCI Loans Outstanding (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
PCI Loans UPB [Member]
PCI loans [Abstract]
Total PCI loans (unpaid principal balance)	$ 4,765	$ 7,348
PCI Loans Carrying Value [Member]
PCI loans [Abstract]
PCI loans	3,200	5,009
PCI Loans Carrying Value [Member] | Commercial Portfolio Segment [Member]
PCI loans [Abstract]
PCI loans	0	4
PCI Loans Carrying Value [Member] | Total Consumer [Member]
PCI loans [Abstract]
PCI loans	3,200	5,005
PCI Loans Carrying Value [Member] | Real estate 1-4 family first mortgage [Member]
PCI loans [Abstract]
PCI loans	3,184	4,988
PCI Loans Carrying Value [Member] | Real estate 1-4 family junior lien mortgage [Member]
PCI loans [Abstract]
PCI loans	$ 16	$ 17

Leasing Activity, Leasing Reven

Leasing Activity, Leasing Revenue (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Direct Financing Lease, Lease Income [Abstract]
Interest income on lease financing	$ 223
Variable revenues on lease financing	24
Total lease financing revenue	247
Operating Leases, Lease Income [Abstract]
Fixed revenues on operating leases	373
Variable revenues on operating leases	18
Total operating lease revenue	391
Total lease revenue	666
Equipment leased to other party [Member]
Operating Leases, Lease Income [Abstract]
Other lease-related revenues	$ 28

Leasing Activity Leasing Activi

Leasing Activity Leasing Activity, Investment in Lease Financing (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Investment in Lease Financing [Line Items]
Lease receivables	$ 17,640
Residual asset values	4,169
Unearned income	(2,687)
Net Investment in Lease	19,122
Leasing Activity Disclosures Textual [Abstract]
Net investment in leveraged leases, lessor	2,000
Operating lease assets, lessor	9,294	$ 9,444
Assets Leased to Others [Member]
Leasing Activity Disclosures Textual [Abstract]
Operating lease assets, lessor	8,793	$ 9,036
Accumulated depreciation, Operating lease assets, lessor	3,200
Depreciation, Operating lease assets, lessor	229
Gain (loss) on disposition of lease assets, lessor	$ 14

Leasing Activity Leasing Acti_2

Leasing Activity Leasing Activity, Maturities of Lease Receivables (Details) $ in Millions	Mar. 31, 2019USD ($)
Direct financing and sales-type leases, Fiscal Year Maturity [Abstract]
Remainder of 2019, direct financing and sales-type leases	$ 4,143
2020, direct financing and sales-type leases	4,866
2021, direct financing and sales-type leases	3,698
2022, direct financing and sales-type leases	1,857
2023, direct financing and sales-type leases	1,035
Thereafter, direct financing and sales-type leases	2,041
Total lease receivable, direct financing and sales-type leases	17,640
Operating leases, Fiscal Year Maturity [Abstract]
Remainder of 2019, operating leases	953
2020, operating leases	862
2021, operating leases	568
2022, operating leases	385
2023, operating leases	252
Thereafter, operating leases	581
Total lease receivables, operating leases	$ 3,601

Leasing Activity Leasing Acti_3

Leasing Activity Leasing Activity, Operating Lease Right of Use (ROU) Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Leases [Abstract]
ROU assets	$ 4,869	$ 0
Lease liabilities	$ 5,405

Leasing Activity Leasing Acti_4

Leasing Activity Leasing Activity, Lease Costs (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Fixed lease expense - operating leases	$ 297
Variable lease expense	73
Other	(8)
Total lease costs	$ 362

Leasing Activity Leasing Acti_5

Leasing Activity Leasing Activity, Lease Payments on Operating Leases Prior to Adoption of ASU 2016-02 - Leases (Details) $ in Millions	Mar. 31, 2019USD ($)
Leases [Abstract]
2019, operating leases, prior to adoption of ASU 2016-02	$ 1,174
2020, operating leases, prior to adoption of ASU 2016-02	1,056
2021, operating leases, prior to adoption of ASU 2016-02	880
2022, operating leases, prior to adoption of ASU 2016-02	713
2023, operating leases, prior to adoption of ASU 2016-02	577
Thereafter, operating leases, prior to adoption of ASU 2016-02	1,654
Total, operating leases, prior to adoption of ASU 2016-02	$ 6,054

Leasing Activity Leasing Acti_6

Leasing Activity Leasing Activity, Lease Payments on Operating Leases Subsequent to Adoption of ASU 2016-02 - Leases (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Operating Lease Liabilities, Payments Due [Abstract]
Remainder of 2019, operating leases, subsequent to adoption of ASU 2016-02	$ 777
2020, operating leases, subsequent to adoption of ASU 2016-02	1,123
2021, operating leases, subsequent to adoption of ASU 2016-02	942
2022, operating leases, subsequent to adoption of ASU 2016-02	770
2023, operating leases, subsequent to adoption of ASU 2016-02	628
Thereafter, operating leases, subsequent to adoption of ASU 2016-02	1,936
Total lease payments, operating leases, subsequent to adoption of ASU 2016-02	6,176
Less: imputed interest	771
Total operating lease liability	$ 5,405
Weighted average remaining lease term (in years)	7 years 3 months 18 days
Weighted average discount rate	3.20%
Leasing Activity Disclosures Textual [Abstract]
Operating lease, term of contract	15 years
Operating lease, term of contract, longest expiration year	2105
Operating lease, not yet commenced, lease commitment amount	$ 164
Operating lease, not yet commenced, earliest year of commencement	2022
Minimum [Member]
Leasing Activity Disclosures Textual [Abstract]
Operating lease, lease not yet commenced, term of contract	1 year
Maximum [Member]
Leasing Activity Disclosures Textual [Abstract]
Operating lease, lease not yet commenced, term of contract	11 years

Equity Securities (Details)

Equity Securities (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Equity Securities [Line Items]
Equity securities, carried at fair value		$ 32,586		$ 29,556
Equity securities (includes $32,586 and $29,556 carried at fair value) (1)	[1]	58,440		55,148
Equity Securities Disclosures Textual [Abstract]
Securities held as economic hedges related to deferred compensation plan obligations		3,500		3,200
Federal home loan bank stock and federal reserve bank stock		5,700		5,600
Loss from Affordable Housing Projects, Equity Method Investments		273	$ 280
Affordable Housing Tax Credits and Other Tax Benefits, Amount		370	359
Affordable Housing Tax Credits, Amount		302	$ 290
Qualified Affordable Housing Project Investments, Commitment		$ 3,700		3,600
Affordable Housing Tax Credits Commitment, Payment Period		3 years
Nonmarketable equity securities [Member] | Fair value option election [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value		$ 6,381		5,455
Held for trading [Member] | Marketable equity securities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value		20,933		19,449
Not held for trading [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value		11,653		10,107
Equity securities (includes $32,586 and $29,556 carried at fair value) (1)		37,507		35,699
Not held for trading [Member] | Marketable equity securities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value		5,135		4,513
Not held for trading [Member] | Nonmarketable equity securities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value		6,518		5,594
Not held for trading [Member] | Nonmarketable equity securities [Member] | Fair value option election [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value		6,400		5,500
Not held for trading [Member] | Equity Method Investments [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value		18,161		18,215
Not held for trading [Member] | Low income housing tax credit equity method investments [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value		10,925		10,999
Not held for trading [Member] | Private equity funds [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value		3,890		3,832
Not held for trading [Member] | Tax advantaged renewable energy [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value		3,041		3,073
Not held for trading [Member] | New market tax credit and other [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value		305		311
Not held for trading [Member] | Investment in federal reserve bank stock and other at cost [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value		5,732		5,643
Not held for trading [Member] | Other security investments [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value		$ 1,961		$ 1,734
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Equity Securities, Net Gains (L

Equity Securities, Net Gains (Losses) Not Held for Trading (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Net Gains (Losses) from Equity Securities [Line Items]
Total net gains from equity securities	[1]	$ 814	$ 783
Not designated as hedging instrument [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		(2,638)	(50)
Not designated as hedging instrument [Member] | Net gain (loss) from equity securities [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		(885)	(58)
Economic hedges [Member] | Not designated as hedging instrument [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		(71)	(799)
Economic hedges [Member] | Not designated as hedging instrument [Member] | Net gain (loss) from equity securities [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net		(885)	(58)
Equity securities [Member] | Net gain (loss) from equity securities [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Net gain (loss) from equity securities carried at fair value		1,313	117
Marketable equity securities [Member] | Net gain (loss) from equity securities [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Net gain (loss) from equity securities carried at fair value		377	8
Nonmarketable equity securities [Member] | Net gain (loss) from equity securities [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Net gain (loss) from equity securities carried at fair value		936	109
Net gain (loss) from nonmarketable equity securities not carried at fair value		386	724
Nonmarketable equity securities [Member] | Impairment write-downs
Net Gains (Losses) from Equity Securities [Line Items]
Net gain (loss) from nonmarketable equity securities not carried at fair value		(36)	(20)
Nonmarketable equity securities [Member] | Measurement alternative observable transactions [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Net gain (loss) from nonmarketable equity securities not carried at fair value		185	228
Nonmarketable equity securities [Member] | Realized gains on sale [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Net gain (loss) from nonmarketable equity securities not carried at fair value		237	498
Nonmarketable equity securities [Member] | Other [Member]
Net Gains (Losses) from Equity Securities [Line Items]
Net gain (loss) from nonmarketable equity securities not carried at fair value		$ 0	$ 18
[1]	(2)Includes OTTI losses of $36 million and $20 million for first quarter 2019 and 2018, respectively.

Equity Securities, Gains (Losse

Equity Securities, Gains (Losses) Measurement Alternative (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Net Gains (Losses) from Measurement Alternative Equity Securities
Total net gains recognized during the period	[1]	$ 814	$ 783
Measurement alternative [Member] | Nonmarketable equity securities [Member]
Net Gains (Losses) from Measurement Alternative Equity Securities
Gross unrealized gains due to observable price changes		185	228
Impairment write-downs		(22)	(7)
Realized net gains from sale		23	75
Total net gains recognized during the period		186	$ 296
Measurement Alternative Cumulative Gains (Losses)
Cumulative gross unrealized gains due to observable price changes		577		$ 415
Cumulative gross unrealized losses due to observable price changes		(25)		(25)
Cumulative impairment write-downs		$ (55)		$ (33)
[1]	(2)Includes OTTI losses of $36 million and $20 million for first quarter 2019 and 2018, respectively.

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Components of Other Assets [Line Items]
Corporate/bank-owned life insurance	$ 19,842	$ 19,751
Accounts receivable (1)	32,405	34,281
Interest receivable	6,277	6,084
Net carrying value	1,935	1,988
Non-residential real estate	132	134
Operating lease ROU assets (lessee)	4,869	0
Due from customers on acceptances	243	258
Other	9,294	9,444
Other assets	82,667	79,850
Assets Leased to Others [Member]
Components of Other Assets [Line Items]
Other	8,793	9,036
Government insured/guaranteed [Member]
Components of Other Assets [Line Items]
Residential real estate	75	88
Non-government insured/guaranteed [Member]
Components of Other Assets [Line Items]
Residential real estate	229	229
Customer relationship and other amortized intangibles [Member]
Components of Other Assets [Line Items]
Net carrying value	$ 508	$ 545

Securitizations and Variable _3

Securitizations and Variable Interest Entities, Balance Sheet Transactions with VIEs (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		$ 20,650	$ 23,551
Interest-earning deposits with banks		128,318	149,736
Debt securities:
Trading debt securities		70,378	69,989
Available-for-sale, at fair value		268,099	269,912
Held-to-maturity, at cost (fair value $144,699 and $142,115)		144,990	144,788
Loans	[1]	948,249	953,110
Mortgage servicing rights		13,336	14,649
Derivative assets		11,238	10,770
Equity securities	[1]	58,440	55,148
Other assets		82,667	79,850
Total assets	[2]	1,887,792	1,895,883
Short-term borrowings		106,597	105,787
Derivative liabilities		7,393	8,499
Accrued expenses and other liabilities		74,717	69,317
Long-term debt		236,339	229,044
Total liabilities	[3]	1,689,059	1,698,817
Noncontrolling interests		901	900
VIEs that we consolidate recourse [member]
Debt securities:
Total liabilities		0	0
VIEs that we do not consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		0	0
Interest-earning deposits with banks		0	0
Debt securities:
Trading debt securities		1,848	2,110
Available-for-sale, at fair value		2,063	2,686
Held-to-maturity, at cost (fair value $144,699 and $142,115)		524	510
Loans		1,398	1,433
Mortgage servicing rights		13,515	14,761
Derivative assets		74	53
Equity securities		10,973	11,041
Other assets		0	0
Total assets		30,395	32,594
Short-term borrowings		0	0
Derivative liabilities		6	26
Accrued expenses and other liabilities		198	231
Long-term debt		3,750	3,870
Total liabilities		3,954	4,127
Noncontrolling interests		0	0
Net assets		26,441	28,467
VIEs that we consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		16	139
Interest-earning deposits with banks		8	8
Debt securities:
Trading debt securities		55	45
Available-for-sale, at fair value		0	0
Held-to-maturity, at cost (fair value $144,699 and $142,115)		0	0
Loans		14,368	13,564
Mortgage servicing rights		0	0
Derivative assets		0	0
Equity securities		112	85
Other assets		252	221
Total assets		14,811	14,062
Short-term borrowings		0	0
Derivative liabilities		0	0
Accrued expenses and other liabilities		205	191
Long-term debt		775	816
Total liabilities		980	1,007
Noncontrolling interests		31	34
Net assets		13,800	13,021
Transfers that we account for as secured borrowings [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		0	0
Interest-earning deposits with banks		0	0
Debt securities:
Trading debt securities		200	200
Available-for-sale, at fair value		248	317
Held-to-maturity, at cost (fair value $144,699 and $142,115)		0	0
Loans		91	94
Mortgage servicing rights		0	0
Derivative assets		0	0
Equity securities		0	0
Other assets		6	6
Total assets		545	617
Short-term borrowings		427	493
Derivative liabilities		0	0
Accrued expenses and other liabilities		7	8
Long-term debt		90	93
Total liabilities		524	594
Noncontrolling interests		0	0
Net assets		21	23
Total VIE [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		16	139
Interest-earning deposits with banks		8	8
Debt securities:
Trading debt securities		2,103	2,355
Available-for-sale, at fair value		2,311	3,003
Held-to-maturity, at cost (fair value $144,699 and $142,115)		524	510
Loans		15,857	15,091
Mortgage servicing rights		13,515	14,761
Derivative assets		74	53
Equity securities		11,085	11,126
Other assets		258	227
Total assets		45,751	47,273
Short-term borrowings		427	493
Derivative liabilities		6	26
Accrued expenses and other liabilities		410	430
Long-term debt		4,615	4,779
Total liabilities		5,458	5,728
Noncontrolling interests		31	34
Net assets		$ 40,262	$ 41,511
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.
[2]	(2)Our consolidated assets at March 31, 2019, and December 31, 2018, 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, $16 million and $139 million; Interest-earning deposits with banks, $8 million and $8 million; Debt securities, $55 million and $45 million; Net loans, $14.4 billion and $13.6 billion; Equity securities, $112 million and $85 million; Other assets, $252 million and $221 million; and Total assets, $14.8 billion and $14.1 billion, respectively.
[3]	(3)Our consolidated liabilities at March 31, 2019, and December 31, 2018, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Accrued expenses and other liabilities, $205 million and $191 million; Long-term debt, $775 million and $816 million; and Total liabilities, $980 million and $1.0 billion, respectively.

Securitizations and Variable _4

Securitizations and Variable Interest Entities, Unconsolidated VIEs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Variable Interest Entity [Line Items]
Total VIE assets	$ 1,348,257		$ 1,374,802
Securitizations and Variable Interest Entities Textual [Abstract]
Carrying value of delinquent loans eligible for repurchase	578		1,200
Principal amount that would be payable to securitization vehicles	578		1,200
Equity Interests [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	11,000		11,000
Trust preferred securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(2,000)		(2,000)
Trust preferred securities [Member] | Preferred Stock [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Carrying value - equity	2,500		2,500
Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,145,791		1,172,833
Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Total VIE assets	9,582		10,596
Commercial [Member]
Variable Interest Entity [Line Items]
Total VIE assets	153,770		153,350
Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Total VIE assets	641		659
Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Total VIE assets	283		304
Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Total VIE assets	36,135		35,185
Collateralized loan obligations [Member]
Variable Interest Entity [Line Items]
Total VIE assets	203		2
Investment Funds [Member]
Variable Interest Entity [Line Items]
Total VIE assets	204		185
Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Total VIE assets	1,648		1,688
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	10	$ 13
Debt and equity interests [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	16,806		17,780
Maximum exposure to loss	16,806		17,780
Debt and equity interests [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	2,146		2,377
Maximum exposure to loss	2,146		2,377
Debt and equity interests [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	27		453
Maximum exposure to loss	27		453
Debt and equity interests [Member] | Commercial [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	2,193		2,409
Maximum exposure to loss	2,193		2,409
Debt and equity interests [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Debt and equity interests [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	173		205
Maximum exposure to loss	173		205
Debt and equity interests [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	12,009		12,087
Maximum exposure to loss	12,009		12,087
Debt and equity interests [Member] | Collateralized loan obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	4		0
Maximum exposure to loss	4		0
Debt and equity interests [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	47		42
Maximum exposure to loss	47		42
Debt and equity interests [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	207		207
Maximum exposure to loss	207		207
Servicing assets [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	13,515		14,761
Maximum exposure to loss	13,515		14,761
Servicing assets [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	12,574		13,811
Maximum exposure to loss	12,574		13,811
Servicing assets [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	60		57
Maximum exposure to loss	60		57
Servicing assets [Member] | Commercial [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	881		893
Maximum exposure to loss	881		893
Servicing assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Collateralized loan obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Servicing assets [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	68		27
Maximum exposure to loss	79		78
Derivative [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Commercial [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	17		(22)
Maximum exposure to loss	27		28
Derivative [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	4		5
Maximum exposure to loss	4		5
Derivative [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Collateralized loan obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Derivative [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	47		44
Maximum exposure to loss	48		45
Other commitments and guarantees [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(3,948)		(4,101)
Maximum exposure to loss	14,571		14,415
Other commitments and guarantees [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(137)		(171)
Maximum exposure to loss	1,101		1,183
Other commitments and guarantees [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Other commitments and guarantees [Member] | Commercial [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(41)		(40)
Maximum exposure to loss	11,795		11,563
Other commitments and guarantees [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(20)		(20)
Maximum exposure to loss	20		20
Other commitments and guarantees [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	72		71
Other commitments and guarantees [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(3,750)		(3,870)
Maximum exposure to loss	1,426		1,420
Other commitments and guarantees [Member] | Collateralized loan obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Other commitments and guarantees [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	0		0
Other commitments and guarantees [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	0		0
Maximum exposure to loss	157		158
Total exposure [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	44,971		47,034
Total exposure [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	15,821		17,371
Total exposure [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	87		510
Total exposure [Member] | Commercial [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	14,896		14,893
Total exposure [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	24		25
Total exposure [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	245		276
Total exposure [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	13,435		13,507
Total exposure [Member] | Collateralized loan obligations [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	4		0
Total exposure [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	47		42
Total exposure [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss	412		410
Net assets [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	26,441		28,467
Net assets [Member] | Conforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	14,583		16,017
Net assets [Member] | Other/Nonconforming Residential Mortgage Loan Securitization [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	87		510
Net assets [Member] | Commercial [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	3,050		3,240
Net assets [Member] | Collateralized Debt Obligations Debt Securities [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	(16)		(15)
Net assets [Member] | Asset-based finance structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	173		205
Net assets [Member] | Tax Credit Structures [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	8,259		8,217
Net assets [Member] | Collateralized loan obligations [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	4		0
Net assets [Member] | Investment Funds [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	47		42
Net assets [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Carrying value asset (liability)	$ 254		$ 251

Securitizations and Variable _5

Securitizations and Variable Interest Entities, Cash Flows From Sales and Securitization Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Securitizations and Variable Interest Entities Textual [Abstract]
Amount paid to repurchase loans from securitization vehicles	$ 1,900	$ 2,900
Net gain from sale of assets securitizations	61	58
Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount transferred related to mortgages to unconsolidated VIE	34,100	47,300
Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Proceeds from securitizations and whole loan sales	36,507	50,587
Fees from servicing rights retained	780	845
Cash flows from other interests held	111	185
Servicing advances, net of repayments	(39)	(36)
Commercial Loan [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Net gain from sale of assets securitizations	47	69
Amount transferred related to mortgages to unconsolidated VIE	2,700	3,100
Non-agency securitizations and whole loan transactions [Member] | Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	0	1
Agency securitizations | Mortgage loans [Member]
Cash Flow Securitizations [Abstract]
Repurchases of assets/loss reimbursements	17	33
Fair Value, Inputs, Level 3 [Member] | Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount of servicing asset at fair value	320	533
Amount of liability for repurchase reserves at fair value	3	3
Fair Value, Inputs, Level 3 [Member] | Commercial Loan [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Amount of servicing asset at fair value	26	34
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities, at fair value	912	3,800
Fair Value, Inputs, Level 2 [Member] | Commercial Loan [Member]
Securitizations and Variable Interest Entities Textual [Abstract]
Securities, at fair value	$ 0	$ 0

Securitizations and Variable _6

Securitizations and Variable Interest Entities, Residential Mortgage Servicing Rights (Details) - Residential mortgage servicing rights [Member] - $ / loan	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Prepayment speed	13.50%	9.60%
Discount rate	8.10%	7.30%
Cost to service ($ per loan)	94	117

Securitizations and Variable _7

Securitizations and Variable Interest Entities, Retained Interests from Unconsolidated VIEs (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)$ / loan	Dec. 31, 2018USD ($)$ / loan
Commercial mortgage servicing [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 2,100	$ 2,300
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	$ 292	$ 320
Residential mortgage servicing rights [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of interests held	$ 13,336	$ 14,649
Expected weighted-average life (in years)	5 years 10 months 24 days	6 years 6 months
Key economic assumptions:
Prepayment speed assumption	11.30%	9.90%
Decrease in fair value from:
10% adverse change	$ 542	$ 530
25% adverse change	$ 1,280	$ 1,301
Discount rate assumption	7.60%	8.10%
Decrease in fair value from:
100 basis point increase	$ 548	$ 615
200 basis point increase	$ 1,049	$ 1,176
Cost to service assumption ($ per loan) | $ / loan	103	106
Decrease in fair value from:
10% adverse change	$ 290	$ 316
25% adverse change	723	787
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	$ 15	$ 16
Expected weighted-average life (in years)	3 years 6 months	3 years 7 months 6 days
Key economic assumptions:
Prepayment speed assumption	18.20%	17.70%
Decrease in fair value from:
10% adverse change	$ 1	$ 1
25% adverse change	$ 1	$ 1
Discount rate assumption	14.20%	14.50%
Decrease in fair value from:
100 basis point increase	$ 0	$ 0
200 basis point increase	0	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	$ 679	$ 668
Expected weighted-average life (in years)	6 years 10 months 24 days	7 years
Decrease in fair value from:
Discount rate assumption	4.10%	4.30%
Decrease in fair value from:
100 basis point increase	$ 38	$ 37
200 basis point increase	$ 74	$ 72
Decrease in fair value from:
Credit loss assumption	4.50%	5.10%
Decrease in fair value from:
10% higher losses	$ 2	$ 2
25% higher losses	5	5
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	$ 295	$ 309
Expected weighted-average life (in years)	5 years 6 months	5 years 8 months 12 days
Decrease in fair value from:
Discount rate assumption	3.40%	3.70%
Decrease in fair value from:
100 basis point increase	$ 14	$ 14
200 basis point increase	$ 26	$ 28
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

Securitizations and Variable _8

Securitizations and Variable Interest Entities, Off-Balance Sheet Loans Sold or Securitized (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	$ 1,167,846		$ 1,202,301
Delinquent loans and foreclosed assets	8,964		9,955
Net charge-offs	146	$ 126
FNMA, FHLMC and GNMA [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,100,000		1,100,000
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	451		442
Delinquent loans	5,800		6,400
Total Commercial [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	106,087		105,173
Delinquent loans and foreclosed assets	976		1,008
Net charge-offs	79	10
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	550		675
Commercial real estate mortgage [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	106,087		105,173
Delinquent loans and foreclosed assets	976		1,008
Net charge-offs	79	10
Total Consumer [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,061,759		1,097,128
Delinquent loans and foreclosed assets	7,988		8,947
Net charge-offs	67	116
Securitizations and Variable Interest Entities Textual [Abstract]
Foreclosed assets	575		582
Real estate 1-4 family first mortgage [Member]
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]
Total loans	1,061,759		1,097,128
Delinquent loans and foreclosed assets	7,988		$ 8,947
Net charge-offs	$ 67	$ 116

Securitizations and Variable _9

Securitizations and Variable Interest Entities, Transactions with Consolidated VIEs and Secured Borrowings (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Assets	[1]	$ 1,887,792	$ 1,895,883
Liabilities	[2]	(1,689,059)	(1,698,817)
Noncontrolling interests		(901)	(900)
Total secured borrowings [Member]
Variable Interest Entity [Line Items]
Total VIE assets		653	722
Total secured borrowings [Member] | Municipal tender option bond securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		562	627
Total secured borrowings [Member] | Residential mortgage securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		91	95
Consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Total VIE assets		15,019	14,288
Assets		14,811	14,062
Liabilities		(980)	(1,007)
Noncontrolling interests		(31)	(34)
Net assets		13,800	13,021
Consolidated VIEs [Member] | Commercial real estate loans [Member]
Variable Interest Entity [Line Items]
Total VIE assets		4,622	3,957
Consolidated VIEs [Member] | Commercial and Industrial Loans and Leases [Member]
Variable Interest Entity [Line Items]
Total VIE assets		8,643	8,215
Consolidated VIEs [Member] | Nonconforming residential mortgage loan securitizations [Member]
Variable Interest Entity [Line Items]
Total VIE assets		1,556	1,947
Consolidated VIEs [Member] | Investment funds [Member]
Variable Interest Entity [Line Items]
Total VIE assets		185	155
Consolidated VIEs [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Total VIE assets		13	14
Total secured borrowings and consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Total VIE assets		15,672	15,010
Carrying value [Member] | Total secured borrowings [Member]
Variable Interest Entity [Line Items]
Assets		545	617
Liabilities		(524)	(594)
Noncontrolling interests		0	0
Net assets		21	23
Carrying value [Member] | Total secured borrowings [Member] | Municipal tender option bond securitizations [Member]
Variable Interest Entity [Line Items]
Assets		454	523
Liabilities		(434)	(501)
Noncontrolling interests		0	0
Net assets		20	22
Carrying value [Member] | Total secured borrowings [Member] | Residential mortgage securitizations [Member]
Variable Interest Entity [Line Items]
Assets		91	94
Liabilities		(90)	(93)
Noncontrolling interests		0	0
Net assets		1	1
Carrying value [Member] | Consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Assets		14,811	14,062
Liabilities		(980)	(1,007)
Noncontrolling interests		(31)	(34)
Net assets		13,800	13,021
Carrying value [Member] | Consolidated VIEs [Member] | Commercial real estate loans [Member]
Variable Interest Entity [Line Items]
Assets		4,622	3,957
Liabilities		0	0
Noncontrolling interests		0	0
Net assets		4,622	3,957
Carrying value [Member] | Consolidated VIEs [Member] | Commercial and Industrial Loans and Leases [Member]
Variable Interest Entity [Line Items]
Assets		8,629	8,204
Liabilities		(491)	(477)
Noncontrolling interests		(12)	(14)
Net assets		8,126	7,713
Carrying value [Member] | Consolidated VIEs [Member] | Nonconforming residential mortgage loan securitizations [Member]
Variable Interest Entity [Line Items]
Assets		1,362	1,732
Liabilities		(479)	(521)
Noncontrolling interests		0	0
Net assets		883	1,211
Carrying value [Member] | Consolidated VIEs [Member] | Investment funds [Member]
Variable Interest Entity [Line Items]
Assets		185	155
Liabilities		(7)	(5)
Noncontrolling interests		(15)	(15)
Net assets		163	135
Carrying value [Member] | Consolidated VIEs [Member] | Other securitizations and transactions [Member]
Variable Interest Entity [Line Items]
Assets		13	14
Liabilities		(3)	(4)
Noncontrolling interests		(4)	(5)
Net assets		6	5
Carrying value [Member] | Total secured borrowings and consolidated VIEs [Member]
Variable Interest Entity [Line Items]
Assets		15,356	14,679
Liabilities		(1,504)	(1,601)
Noncontrolling interests		(31)	(34)
Net assets		$ 13,821	$ 13,044
[1]	(2)Our consolidated assets at March 31, 2019, and December 31, 2018, 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, $16 million and $139 million; Interest-earning deposits with banks, $8 million and $8 million; Debt securities, $55 million and $45 million; Net loans, $14.4 billion and $13.6 billion; Equity securities, $112 million and $85 million; Other assets, $252 million and $221 million; and Total assets, $14.8 billion and $14.1 billion, respectively.
[2]	(3)Our consolidated liabilities at March 31, 2019, and December 31, 2018, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Accrued expenses and other liabilities, $205 million and $191 million; Long-term debt, $775 million and $816 million; and Total liabilities, $980 million and $1.0 billion, respectively.

Mortgage Banking Activities, An

Mortgage Banking Activities, Analysis of Changes in Fair Value MSRs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Changes in MSRs measured at fair value
Fair value, beginning of period	$ 14,649
Changes in fair value:
Net changes in valuation model inputs or assumptions	(891)	$ 1,330
Changes due to collection/realization of expected cash flows over time	(482)	(483)
Total changes in fair value	(1,373)	847
Fair value, end of period	13,336
Carried at fair value [Member]
Changes in MSRs measured at fair value
Fair value, beginning of period	14,649	13,625
Servicing from securitizations or asset transfers (1)	341	573
Sales and other (2)	(281)	(4)
Net additions	60	569
Changes in fair value:
Net changes in valuation model inputs or assumptions	(891)	1,330
Changes due to collection/realization of expected cash flows over time	(482)	(483)
Total changes in fair value	(1,373)	847
Fair value, end of period	13,336	15,041
Carried at fair value [Member] | Mortgage interest rates [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	(940)	1,253
Carried at fair value [Member] | Servicing and foreclosure costs [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	12	34
Carried at fair value [Member] | Discount rates [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	100	0
Carried at fair value [Member] | Prepayment estimates and other [Member]
Changes in fair value:
Net changes in valuation model inputs or assumptions	$ (63)	$ 43

Mortgage Banking Activities, _2

Mortgage Banking Activities, Analysis of Changes in Amortized MSRs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Changes in amortized MSRs
Amortization	$ (66)	$ (65)
Amortized [Member]
Changes in amortized MSRs
Balance, beginning of period	1,443	1,424
Purchases	24	18
Servicing from securitizations or asset transfers	26	34
Amortization	(66)	(65)
Balance, end of period	1,427	1,411
Fair value of amortized MSRs:
Beginning of period	2,288	2,025
End of period	2,149	2,307
Commercial mortgage servicing [Member] | Amortized [Member]
Mortgage Banking Activities (Textual) [Abstract]
Valuation allowance	$ 0	$ 0

Mortgage Banking Activities, Ma

Mortgage Banking Activities, Managed Servicing Portfolio (Details) - USD ($) $ in Billions	Mar. 31, 2019	Dec. 31, 2018
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	$ 1,677	$ 1,707
Total managed servicing portfolio	$ 2,165	$ 2,175
Ratio of MSRs to related loans serviced for others	0.88%	0.94%
Residential mortgage servicing rights [Member]
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	$ 1,125	$ 1,164
Owned loans serviced	331	334
Subserviced for others	26	4
Total managed servicing portfolio	1,482	1,502
Commercial mortgage servicing [Member]
Components of Managed Servicing Portfolio [Abstract]
Serviced for others	552	543
Owned loans serviced	122	121
Subserviced for others	9	9
Total managed servicing portfolio	$ 683	$ 673

Mortgage Banking Activities, Mo

Mortgage Banking Activities, Mortgage Banking Noninterest Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Servicing fees:
Contractually specified servicing fees	$ 840	$ 916
Late charges	33	44
Ancillary fees	38	40
Unreimbursed direct servicing costs	(70)	(94)
Net servicing fees	841	906
Changes in fair value of MSRs carried at fair value:
Due to changes in valuation model inputs or assumptions	(891)	1,330
Changes due to collection/realization of expected cash flows over time	(482)	(483)
Total changes in fair value of MSRs carried at fair value	(1,373)	847
Amortization	(66)	(65)
Net Derivative Gains (Losses) From Economic Hedges Related To Mortgage Servicing Activities	962	(1,220)
Total servicing income, net	364	468
Net gains on mortgage loan origination/sales activities (4)	344	466
Total mortgage banking noninterest income	708	934
Market-related valuation changes to MSRs, net of hedge results	71	110
Net Derivative Gains (Losses) From Economic Hedges Related To Mortgage Loans Held for Sale and Derivative Loan Commitments	$ (151)	$ 625

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Amortized intangible assets:
Gross carrying value	$ 8,148	$ 20,989
Accumulated amortization	(6,213)	(19,001)
Net carrying value	1,935	1,988
Unamortized intangible assets:
Mortgage servicing rights	13,336	14,649
Goodwill	26,420	26,418	$ 26,445	$ 26,587
Trademark	14	14
MSRs [Member]
Amortized intangible assets:
Gross carrying value	4,211	4,161
Accumulated amortization	(2,784)	(2,718)
Net carrying value	1,427	1,443
Core deposit intangibles [Member]
Amortized intangible assets:
Gross carrying value	0	12,834
Accumulated amortization	0	(12,834)
Net carrying value	0	0
Customer relationship and other intangibles [Member]
Amortized intangible assets:
Gross carrying value	3,937	3,994
Accumulated amortization	(3,429)	(3,449)
Net carrying value	$ 508	$ 545

Intangible Assets, Amortization

Intangible Assets, Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2019 (actual)	$ 28	$ 265
Estimate for the remainder of 2019	287
Estimate for year ended December 31,
2020	337
2021	287
2022	251
2023	213
2024	178
Finite lived intangible assets [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2019 (actual)	96
Amortized MSRs [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2019 (actual)	66
Estimate for the remainder of 2019	202
Estimate for year ended December 31,
2020	242
2021	206
2022	183
2023	154
2024	130
Customer relationship and other amortized intangibles [Member]
Finite-Lived Intangible Assets, Future Amortization Expense, Current and Five Succeeding Fiscal Years [Abstract]
Three months ended March 31, 2019 (actual)	30
Estimate for the remainder of 2019	85
Estimate for year ended December 31,
2020	95
2021	81
2022	68
2023	59
2024	$ 48

Intangible Assets, Allocation o

Intangible Assets, Allocation of Goodwill to Operating Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 26,418	$ 26,587
Reduction in goodwill related to divested businesses and other		(142)
Goodwill, Foreign Currency Translation Gain (Loss)	2
Goodwill, Ending Balance	26,420	26,445
Community Banking [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	16,685	16,849
Reduction in goodwill related to divested businesses and other		(142)
Goodwill, Foreign Currency Translation Gain (Loss)	0
Goodwill, Ending Balance	16,685	16,707
Wholesale Banking [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	8,450	8,455
Reduction in goodwill related to divested businesses and other		0
Goodwill, Foreign Currency Translation Gain (Loss)	2
Goodwill, Ending Balance	8,452	8,455
Wealth and Investment Management [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,283	1,283
Reduction in goodwill related to divested businesses and other		0
Goodwill, Foreign Currency Translation Gain (Loss)	0
Goodwill, Ending Balance	$ 1,283	$ 1,283

Guarantees, Pledged Assets an_3

Guarantees, Pledged Assets and Collateral (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Guarantor Obligations [Line Items]
Carrying Value obligation (asset)		$ (302)	$ (90)
Maximum exposure to loss, expires in one year or less		28,004	32,872
Maximum exposure to loss, expires in one year through three years		17,961	19,053
Maximum exposure to loss, expires in three years through five years		7,891	7,674
Maximum exposure to loss, expires after five years		15,129	15,063
Maximum exposure to loss		68,985	74,662
Total assets	[1]	1,887,792	1,895,883
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value		3,800	4,400
Mortgages held for sale		1,000	7,400
Carrying value of delinquent loans eligible for repurchase		578	1,200
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Equity Securities, Trading		20,933	19,449
Total pledged assets, Trading		101,502	100,316
Total pledged assets		634,583	622,643
Related to non-trading activities [Member]
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Debt securities and other, non-trading activities		57,067	62,438
Mortgages held for sale and loans		464,216	453,894
Total pledged assets		521,283	516,332
Collateral Pledged [Member]
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Debt Securities, Trading		102,951	96,616
Equity Securities, Trading		10,349	9,695
Total pledged assets, Trading		113,300	106,311
Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		32,462	39,591
Written put options [Member]
Guarantor Obligations [Line Items]
Carrying Value obligation (asset)		(394)	(185)
Maximum exposure to loss, expires in one year or less		12,392	17,243
Maximum exposure to loss, expires in one year through three years		10,025	10,502
Maximum exposure to loss, expires in three years through five years		3,119	3,066
Maximum exposure to loss, expires after five years		359	400
Maximum exposure to loss		25,895	31,211
Written put options [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		14,808	21,732
Direct pay letters of credit (DPLCs) [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		7,200	7,500
Third Party Clearing Indemnifications [Member]
Guarantor Obligations [Line Items]
Third-party Clearing Customer Obligations		75	70
Collateral Provided to Third-party Clearing Agents		790	974
Standby Letters of Credit [Member]
Guarantor Obligations [Line Items]
Carrying Value obligation (asset)		38	40
Maximum exposure to loss, expires in one year or less		14,919	14,636
Maximum exposure to loss, expires in one year through three years		7,276	7,897
Maximum exposure to loss, expires in three years through five years		3,609	3,398
Maximum exposure to loss, expires after five years		465	497
Maximum exposure to loss		26,269	26,428
Standby Letters of Credit [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		7,941	8,027
Securities lending and other indemnifications [Member]
Guarantor Obligations [Line Items]
Carrying Value obligation (asset)		0	0
Maximum exposure to loss, expires in one year or less		0	0
Maximum exposure to loss, expires in one year through three years		0	1
Maximum exposure to loss, expires in three years through five years		0	0
Maximum exposure to loss, expires after five years		865	1,044
Maximum exposure to loss		865	1,045
Securities lending and other indemnifications [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		0	1
Loans and MHFS sold with recourse [Member]
Guarantor Obligations [Line Items]
Carrying Value obligation (asset)		53	54
Maximum exposure to loss, expires in one year or less		109	104
Maximum exposure to loss, expires in one year through three years		660	653
Maximum exposure to loss, expires in three years through five years		1,160	1,207
Maximum exposure to loss, expires after five years		10,420	10,163
Maximum exposure to loss		12,349	12,127
Loans and MHFS sold with recourse [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		9,168	9,079
Factoring guarantee [Member]
Guarantor Obligations [Line Items]
Carrying Value obligation (asset)		0	0
Maximum exposure to loss, expires in one year or less		584	889
Maximum exposure to loss, expires in one year through three years		0	0
Maximum exposure to loss, expires in three years through five years		0	0
Maximum exposure to loss, expires after five years		0	0
Maximum exposure to loss		584	889
Factoring guarantee [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		544	751
Other guarantees [Member]
Guarantor Obligations [Line Items]
Carrying Value obligation (asset)		1	1
Maximum exposure to loss, expires in one year or less		0	0
Maximum exposure to loss, expires in one year through three years		0	0
Maximum exposure to loss, expires in three years through five years		3	3
Maximum exposure to loss, expires after five years		3,020	2,959
Maximum exposure to loss		3,023	2,962
Other guarantees [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		1	1
Trading assets and other [Member]
Guarantor Obligations [Line Items]
Securities owned and pledged as collateral available to be repledged, Fair Value		113,200	106,200
Trading assets and other [Member] | Collateral Pledged [Member]
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Total pledged assets, Trading		42,700	45,500
Other Trading - Off-Balance Sheet [Member] | Collateral Pledged [Member]
Security Owned and Pledged as Collateral, Fair Value [Abstract]
Total pledged assets, Trading		70,600	60,800
Debt securities and other [Member] | Related to non-trading activities [Member]
Guarantor Obligations [Line Items]
Securities owned and pledged as collateral available to be repledged, Fair Value		56	68
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, carrying value		3,800	4,200
Securities owned and pledged as collateral related to repurchase agreements not available to be repledged, Fair Value		3,700	4,100
Consolidated VIEs [Member]
Guarantor Obligations [Line Items]
Total assets		14,811	14,062
Secured Borrowing transactions excluded [Member]
Guarantor Obligations [Line Items]
Total assets		$ 545	$ 617
[1]	(2)Our consolidated assets at March 31, 2019, and December 31, 2018, 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, $16 million and $139 million; Interest-earning deposits with banks, $8 million and $8 million; Debt securities, $55 million and $45 million; Net loans, $14.4 billion and $13.6 billion; Equity securities, $112 million and $85 million; Other assets, $252 million and $221 million; and Total assets, $14.8 billion and $14.1 billion, respectively.

Guarantees, Offsetting of Resal

Guarantees, Offsetting of Resale and Repurchase Agreements and Securities Borrowing and Lending (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
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	$ 3,800	$ 4,400
Net amounts in consolidated balance sheet	115,861	97,404
Collateral received, fair value	146,200	123,100
Collateral received with the right to sell or repledge	146,200	123,100
Collateral sold or repledged	70,900	60,800
Collateral pledged, fair value	115,200	108,800
Resale and securities borrowing agreements
Gross amounts recognized	135,549	112,662
Gross amounts offset in consolidated balance sheet	(19,688)	(15,258)
Net amounts in consolidated balance sheet	115,861	97,404
Collateral not recognized in consolidated balance sheet	(115,063)	(96,734)
Net amount	798	670
Repurchase and securities lending agreements
Gross amounts recognized	112,993	106,248
Gross amounts offset in consolidated balance sheet	(19,688)	(15,258)
Net amounts in consolidated balance sheet	93,305	90,990
Collateral pledged but not netted in consolidated balance sheet	(93,095)	(90,798)
Net amount	210	192
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	98,600	80,100
Resale and securities borrowing agreements
Net amounts in consolidated balance sheet	98,600	80,100
Loans [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net amounts in consolidated balance sheet	17,300	17,300
Resale and securities borrowing agreements
Net amounts in consolidated balance sheet	$ 17,300	$ 17,300

Guarantees, Pledged Assets an_4

Guarantees, Pledged Assets and Collateral, and other Commitments Guarantees, Collateral Type and Contractual Maturities of Repurchase Agreements and Securities Lending Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	$ 103,386	$ 97,280
Securities Lending	9,607	8,968
Total Repurchases and Securities Lending	112,993	106,248
Securities of U.S. Treasury and federal agencies [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	46,186	38,408
Securities Lending	186	222
Securities of U.S. states and political subdivisions [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	61	159
Federal agencies [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	44,672	47,241
Securities Lending	0	2
Non-Agency Mortgage-backed Securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	1,767	1,875
Corporate debt securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	6,989	6,191
Securities Lending	390	389
Asset-backed securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	2,337	2,074
Equity securities [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	1,033	992
Securities Lending	9,011	8,349
Other [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	341	340
Securities Lending	20	6
Overnight/Continuous [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	93,042	86,574
Securities Lending	9,308	8,669
Total Repurchases and Securities Lending	102,350	95,243
Up to 30 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	2,696	3,244
Securities Lending	0	0
Total Repurchases and Securities Lending	2,696	3,244
30-90 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	2,844	2,153
Securities Lending	299	299
Total Repurchases and Securities Lending	3,143	2,452
Over 90 days [Member]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement [Abstract]
Repurchase Agreements	4,804	5,309
Securities Lending	0	0
Total Repurchases and Securities Lending	$ 4,804	$ 5,309

Guarantees, Pledged Assets an_5

Guarantees, Pledged Assets and Collateral, and other Commitments Guarantees, Pledged Assets and Collateral, Other Commitments Guarantees, and Other Commitments (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Other Commitments [Line Items]
Resale Agreements, Funded Amounts Outstanding		$ 0	$ 0
Resale Agreements, Unfunded Commitments		$ 9,700	9,800
Description of Guarantees Given by Registrant		The Parent fully and unconditionally guarantees the payment of principal, interest, and any other amounts that may be due on securities that its 100% owned finance subsidiary, Wells Fargo Finance LLC, may issue.
Liabilities	[1]	$ 1,689,059	1,698,817
Other commitments and guarantees [Member] | Wells Fargo Finance, LLC [Member]
Other Commitments [Line Items]
Liabilities		229	5
Purchase Commitment [Member] | Debt securities [Member]
Other Commitments [Line Items]
Other Commitment		224	335
Purchase Commitment [Member] | Equity securities [Member]
Other Commitments [Line Items]
Other Commitment		$ 2,500	$ 2,500
[1]	(3)Our consolidated liabilities at March 31, 2019, and December 31, 2018, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Accrued expenses and other liabilities, $205 million and $191 million; Long-term debt, $775 million and $816 million; and Total liabilities, $980 million and $1.0 billion, respectively.

Legal Actions (Details)

Legal Actions (Details) $ in Millions

Mar. 15, 2019

Nov. 30, 2016USD ($)

Jul. 13, 2012USD ($)

Dec. 31, 2018USD ($)

Nov. 30, 2018USD ($)

Oct. 31, 2018USD ($)

Aug. 31, 2018USD ($)

Mar. 31, 2019USD ($)legal_action

Apr. 20, 2017USD ($)

Nov. 01, 2018USD ($)

Oct. 24, 2018USD ($)

Apr. 20, 2018USD ($)

Jul. 31, 2017

Nov. 17, 2016legal_action

May 31, 2016

Dec. 31, 2015legal_action

ATM Access Fee Litigation [Member]

Legal Actions (Textual) [Abstract]

Loss Contingency, Pending Claims, Number | legal_action

3

Automobile Lending Practices [Member]

Legal Actions (Textual) [Abstract]

Loss Contingency, Pending Claims, Number | legal_action

1

Loss Contingency Accrual, Provision

$ 415

Loss Contingency, Estimate of Possible Loss

415

Automobile Lending Practices [Member] | All Class Members [Member]

Legal Actions (Textual) [Abstract]

Litigation Settlement, Additional Funding

$ 1

Retail Sales Practices, CPI and GAP, and Mortgage interest rate lock matters [Member]

Legal Actions (Textual) [Abstract]

Payments for Legal Settlements

$ 575

Civil Money Penalty

$ 1,000

Interchange Litigation [Member]

Loss Contingencies [Line Items]

Litigation Settlement, Percentage Of Default Interchange Distributed To Class Merchants

0.10%

Legal Actions (Textual) [Abstract]

Loss Contingency, Estimate of Possible Loss

$ 6,600

Litigation Settlement, Default Interchange Distributed To Class Merchants, Distribution Period

8 months

Litigation Settlement, Expense

$ 6,200

Litigation Settlement, Funds Remaining from 2012

5,300

Litigation Settlement, Additional Funding

900

Litigation Settlement, Additional Funding Allocated to WFC

$ 94.5

Mortgage Bankruptcy Loan Modification Litigation [Member]

Legal Actions (Textual) [Abstract]

Loss Contingency, Estimate of Possible Loss

$ 13.5

Approval Date Of The Settlement

Mar. 15, 2019

Mortgage Interest Rate Lock [Member]

Legal Actions (Textual) [Abstract]

Loss Contingency, Pending Claims, Number | legal_action

2

Mortgage Related Regulatory Investigations [Member]

Legal Actions (Textual) [Abstract]

Payments for Legal Settlements

$ 17

$ 2,090

RMBS Trustee Litigation [Member]

Legal Actions (Textual) [Abstract]

Loss Contingency, Pending Claims, Number | legal_action

4

Loss Contingency, Estimate of Possible Loss

$ 43

Sales Practice Matters [Member]

Legal Actions (Textual) [Abstract]

Amounts To Be Paid In Connection With Legal Or Regulatory Matters

$ 142

Payments for Legal Settlements

$ 65

Gain Contingency, Estimate of Possible Insurance Carriers Payments

$ 240

Unauthorized accounts identified

3,500,000

Sales Practice Matters [Member] | All Class Members [Member]

Legal Actions (Textual) [Abstract]

Amounts To Be Paid In Connection With Legal Or Regulatory Matters

$ 25

Payments for Legal Settlements

$ 480

RMBS Trustee Punitive Class Action Complaint [Member]

Legal Actions (Textual) [Abstract]

RMBS trusts at issue in the State Court Action

261

RMBS Trustee Litigation Civil Complaint [Member]

Legal Actions (Textual) [Abstract]

RMBS trusts at issue in the State Court Action

11

Liability for Contingent Litigation Losses [Member]

Legal Actions (Textual) [Abstract]

Range of possible loss, portion not accrued

$ 3,100

Derivatives, Notional or Contra

Derivatives, Notional or Contractual Amounts and Fair Values of Derivatives (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	$ 34,949	$ 34,560
Fair value derivative assets, netting	(23,711)	(23,790)
Net amounts in consolidated balance sheet, assets	11,238	10,770
Fair value derivative liabilities	33,417	32,047
Fair value derivative liabilities, netting	(26,024)	(23,548)
Net amounts in consolidated balance sheet, liabilities	7,393	8,499
Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(13,354)	(12,029)
Net amounts in consolidated balance sheet, assets	7,095	6,406
Fair value derivative liabilities, netting	(14,761)	(13,152)
Net amounts in consolidated balance sheet, liabilities	2,501	3,156
Commodity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(846)	(849)
Net amounts in consolidated balance sheet, assets	682	739
Fair value derivative liabilities, netting	(663)	(727)
Net amounts in consolidated balance sheet, liabilities	497	1,609
Equity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(4,617)	(5,318)
Net amounts in consolidated balance sheet, assets	2,151	2,227
Fair value derivative liabilities, netting	(5,154)	(3,877)
Net amounts in consolidated balance sheet, liabilities	2,806	2,133
Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(4,642)	(5,355)
Net amounts in consolidated balance sheet, assets	1,258	1,359
Fair value derivative liabilities, netting	(5,135)	(5,522)
Net amounts in consolidated balance sheet, liabilities	1,577	1,591
Credit Contracts Protection Sold [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(133)	(73)
Net amounts in consolidated balance sheet, assets	2	3
Fair value derivative liabilities, netting	(123)	(180)
Net amounts in consolidated balance sheet, liabilities	2	2
Credit Contracts Protection Purchased [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets, netting	(119)	(166)
Net amounts in consolidated balance sheet, assets	50	36
Fair value derivative liabilities, netting	(188)	(90)
Net amounts in consolidated balance sheet, liabilities	10	8
Designated as Hedging Instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	2,669	2,810
Fair value derivative liabilities	2,385	2,012
Designated as Hedging Instrument [Member] | Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	187,889	177,511
Fair value derivative assets	2,195	2,237
Fair value derivative liabilities	810	636
Designated as Hedging Instrument [Member] | Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	33,647	34,176
Fair value derivative assets	474	573
Fair value derivative liabilities	1,575	1,376
Not designated as hedging instrument [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	32,280	31,750
Fair value derivative liabilities	31,032	30,035
Not designated as hedging instrument [Member] | Economic hedges [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Fair value derivative assets	2,207	2,463
Fair value derivative liabilities	1,037	528
Not designated as hedging instrument [Member] | Economic hedges [Member] | Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	216,847	173,215
Fair value derivative assets	905	849
Fair value derivative liabilities	495	369
Not designated as hedging instrument [Member] | Economic hedges [Member] | Equity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	16,267	13,920
Fair value derivative assets	1,106	1,362
Fair value derivative liabilities	450	79
Not designated as hedging instrument [Member] | Economic hedges [Member] | Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	16,590	19,521
Fair value derivative assets	154	225
Fair value derivative liabilities	92	80
Not designated as hedging instrument [Member] | Economic hedges [Member] | Credit Contracts Protection Purchased [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	200	100
Fair value derivative assets	42	27
Fair value derivative liabilities	0	0
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	30,073	29,287
Fair value derivative liabilities	29,995	29,507
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Interest rate contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	10,242,378	9,162,821
Fair value derivative assets	17,349	15,349
Fair value derivative liabilities	15,957	15,303
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Commodity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	62,763	66,173
Fair value derivative assets	1,528	1,588
Fair value derivative liabilities	1,160	2,336
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Equity contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	227,993	217,890
Fair value derivative assets	5,662	6,183
Fair value derivative liabilities	7,510	5,931
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Foreign exchange contract [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	331,020	364,982
Fair value derivative assets	5,272	5,916
Fair value derivative liabilities	5,045	5,657
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Credit Contracts Protection Sold [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	13,426	11,741
Fair value derivative assets	135	76
Fair value derivative liabilities	125	182
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Credit Contracts Protection Purchased [Member]
Notional Or Contractual Amounts And Fair Values For Derivatives [Abstract]
Notional or contractual amount	22,440	20,880
Fair value derivative assets	127	175
Fair value derivative liabilities	198	98
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	$ 11,000	$ 11,200

Derivatives, Gross Fair Value o

Derivatives, Gross Fair Value of Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Derivative Assets
Gross amounts recognized	$ 34,949	$ 34,560
Gross amounts offset in consolidated balance sheet	(23,711)	(23,790)
Net amounts in consolidated balance sheet, assets	11,238	10,770
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(206)	(875)
Net amounts	11,032	9,895
Derivative Liabilities
Gross amounts recognized	33,417	32,047
Gross amounts offset in consolidated balance sheet, liabilities	(26,024)	(23,548)
Net amounts in consolidated balance sheet, liabilities	7,393	8,499
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(874)	(875)
Net amounts	6,519	7,624
Derivatives (Textual) [Abstract]
Derivative assets subject to enforceable master netting arrangements	31,600	30,900
Derivative liabilities subject to enforceable master netting arrangements	30,500	28,400
Derivative assets not subject to enforceable master netting arrangements	3,300	3,700
Derivative liabilities not subject to enforceable master netting arrangements	2,900	3,600
Valuation adjustments for derivative assets	290	353
Valuation adjustments for derivative liabilities	104	152
Cash collateral netted against derivative assets	2,700	3,700
Cash collateral netted against derivative liabilities	5,200	3,600
Interest rate contract [Member]
Derivative Assets
Gross amounts recognized	20,449	18,435
Gross amounts offset in consolidated balance sheet	(13,354)	(12,029)
Net amounts in consolidated balance sheet, assets	7,095	6,406
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(123)	(80)
Net amounts	$ 6,972	$ 6,326
Percent exchanged in the over the counter market	90.00%	90.00%
Derivative Liabilities
Gross amounts recognized	$ 17,262	$ 16,308
Gross amounts offset in consolidated balance sheet, liabilities	(14,761)	(13,152)
Net amounts in consolidated balance sheet, liabilities	2,501	3,156
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(576)	(567)
Net amounts	$ 1,925	$ 2,589
Percent exchanged in over-the-counter market	92.00%	92.00%
Commodity contract [Member]
Derivative Assets
Gross amounts recognized	$ 1,528	$ 1,588
Gross amounts offset in consolidated balance sheet	(846)	(849)
Net amounts in consolidated balance sheet, assets	682	739
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	0	(4)
Net amounts	$ 682	$ 735
Percent exchanged in the over the counter market	80.00%	57.00%
Derivative Liabilities
Gross amounts recognized	$ 1,160	$ 2,336
Gross amounts offset in consolidated balance sheet, liabilities	(663)	(727)
Net amounts in consolidated balance sheet, liabilities	497	1,609
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(2)	(8)
Net amounts	$ 495	$ 1,601
Percent exchanged in over-the-counter market	72.00%	85.00%
Equity contract [Member]
Derivative Assets
Gross amounts recognized	$ 6,768	$ 7,545
Gross amounts offset in consolidated balance sheet	(4,617)	(5,318)
Net amounts in consolidated balance sheet, assets	2,151	2,227
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(65)	(755)
Net amounts	$ 2,086	$ 1,472
Percent exchanged in the over the counter market	71.00%	78.00%
Derivative Liabilities
Gross amounts recognized	$ 7,960	$ 6,010
Gross amounts offset in consolidated balance sheet, liabilities	(5,154)	(3,877)
Net amounts in consolidated balance sheet, liabilities	2,806	2,133
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(120)	(110)
Net amounts	$ 2,686	$ 2,023
Percent exchanged in over-the-counter market	83.00%	75.00%
Foreign exchange contract [Member]
Derivative Assets
Gross amounts recognized	$ 5,900	$ 6,714
Gross amounts offset in consolidated balance sheet	(4,642)	(5,355)
Net amounts in consolidated balance sheet, assets	1,258	1,359
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(17)	(35)
Net amounts	$ 1,241	$ 1,324
Percent exchanged in the over the counter market	100.00%	100.00%
Derivative Liabilities
Gross amounts recognized	$ 6,712	$ 7,113
Gross amounts offset in consolidated balance sheet, liabilities	(5,135)	(5,522)
Net amounts in consolidated balance sheet, liabilities	1,577	1,591
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(174)	(188)
Net amounts	$ 1,403	$ 1,403
Percent exchanged in over-the-counter market	100.00%	100.00%
Credit Contracts Protection Sold [Member]
Derivative Assets
Gross amounts recognized	$ 135	$ 76
Gross amounts offset in consolidated balance sheet	(133)	(73)
Net amounts in consolidated balance sheet, assets	2	3
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	0	0
Net amounts	$ 2	$ 3
Percent exchanged in the over the counter market	8.00%	12.00%
Derivative Liabilities
Gross amounts recognized	$ 125	$ 182
Gross amounts offset in consolidated balance sheet, liabilities	(123)	(180)
Net amounts in consolidated balance sheet, liabilities	2	2
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(2)	(2)
Net amounts	$ 0	$ 0
Percent exchanged in over-the-counter market	71.00%	67.00%
Credit Contracts Protection Purchased [Member]
Derivative Assets
Gross amounts recognized	$ 169	$ 202
Gross amounts offset in consolidated balance sheet	(119)	(166)
Net amounts in consolidated balance sheet, assets	50	36
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	(1)	(1)
Net amounts	$ 49	$ 35
Percent exchanged in the over the counter market	82.00%	78.00%
Derivative Liabilities
Gross amounts recognized	$ 198	$ 98
Gross amounts offset in consolidated balance sheet, liabilities	(188)	(90)
Net amounts in consolidated balance sheet, liabilities	10	8
Gross amounts not offset in consolidated balance sheet (Disclosure-only netting)	0	0
Net amounts	$ 10	$ 8
Percent exchanged in over-the-counter market	8.00%	11.00%

Derivatives, Derivatives in Fai

Derivatives, Derivatives in Fair Value and Cash Flow Hedging Relationships (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Line Items Presented in the Consolidated Statement of Income [Abstract]
Debt securities	$ 3,941	$ 3,414
Loans	11,354	10,579
Mortgage loans held for sale	152	179
Deposits (2)	(2,026)	(1,090)
Long-term debt (2)	(1,927)	(1,576)
Other	574	602
Total amounts of line items presented in the consolidated statement of income	12,068	12,108
Derivatives (Textual) [Abstract]
Cash flow hedge deferred loss in other comprehensive income	(276)
Time value component recognized as net interest income (expense) on forward derivatives excluded from the assessment of hedge effectiveness	$ 7	0
Maximum length of time hedged in cash flow hedge	8 years
Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Net income (expense) recognized on fair value hedges	$ (72)	(107)
Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Net income (expense) recognized on cash flow hedges	(79)	(60)
Interest rate contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	(14)	83
Recognized on derivatives	1,371	(1,585)
Recognized on hedged items	(1,313)	1,498
Interest rate contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	(78)	(60)
Foreign exchange contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	(132)	(75)
Recognized on derivatives	(114)	493
Recognized on hedged items	130	(521)
Foreign exchange contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	(1)	0
Debt securities [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Net income (expense) recognized on fair value hedges	30	(94)
Debt securities [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Net income (expense) recognized on cash flow hedges	0	0
Debt securities [Member] | Interest rate contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	16	(82)
Recognized on derivatives	(814)	950
Recognized on hedged items	817	(968)
Debt securities [Member] | Interest rate contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Debt securities [Member] | Foreign exchange contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	10	5
Recognized on derivatives	(4)	4
Recognized on hedged items	5	(3)
Debt securities [Member] | Foreign exchange contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Loans [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Net income (expense) recognized on fair value hedges	0	0
Loans [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Net income (expense) recognized on cash flow hedges	(78)	(60)
Loans [Member] | Interest rate contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	0	0
Recognized on derivatives	0	1
Recognized on hedged items	0	(1)
Loans [Member] | Interest rate contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	(78)	(60)
Loans [Member] | Foreign exchange contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	0	0
Recognized on derivatives	0	0
Recognized on hedged items	0	0
Loans [Member] | Foreign exchange contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Mortgage loans held for sale [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Net income (expense) recognized on fair value hedges	(1)	(3)
Mortgage loans held for sale [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Net income (expense) recognized on cash flow hedges	0	0
Mortgage loans held for sale [Member] | Interest rate contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	0	(1)
Recognized on derivatives	(8)	6
Recognized on hedged items	7	(8)
Mortgage loans held for sale [Member] | Interest rate contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Mortgage loans held for sale [Member] | Foreign exchange contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	0	0
Recognized on derivatives	0	0
Recognized on hedged items	0	0
Mortgage loans held for sale [Member] | Foreign exchange contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Deposits [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Net income (expense) recognized on fair value hedges	(6)	(13)
Deposits [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Net income (expense) recognized on cash flow hedges	0	0
Deposits [Member] | Interest rate contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	(23)	(5)
Recognized on derivatives	207	(149)
Recognized on hedged items	(190)	141
Deposits [Member] | Interest rate contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Deposits [Member] | Foreign exchange contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	0	0
Recognized on derivatives	0	0
Recognized on hedged items	0	0
Deposits [Member] | Foreign exchange contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Long-term debt [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Net income (expense) recognized on fair value hedges	(84)	(30)
Long-term debt [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Net income (expense) recognized on cash flow hedges	(1)	0
Long-term debt [Member] | Interest rate contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	(7)	171
Recognized on derivatives	1,986	(2,393)
Recognized on hedged items	(1,947)	2,334
Long-term debt [Member] | Interest rate contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Long-term debt [Member] | Foreign exchange contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	(142)	(80)
Recognized on derivatives	292	(171)
Recognized on hedged items	(266)	109
Long-term debt [Member] | Foreign exchange contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	(1)	0
Other noninterest income [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Net income (expense) recognized on fair value hedges	(11)	33
Other noninterest income [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Net income (expense) recognized on cash flow hedges	0	0
Other noninterest income [Member] | Interest rate contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	0	0
Recognized on derivatives	0	0
Recognized on hedged items	0	0
Other noninterest income [Member] | Interest rate contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	0	0
Other noninterest income [Member] | Foreign exchange contract [Member] | Fair Value Hedging [Member]
Gains (losses) on fair value hedging relationships
Amounts related to interest settlements on derivatives	0	0
Recognized on derivatives	(402)	660
Recognized on hedged items	391	(627)
Other noninterest income [Member] | Foreign exchange contract [Member] | Cash Flow Hedging [Member]
Gains (losses) on cash flow hedging relationships
Realized gains (losses) (pre tax) reclassified from cumulative OCI into net income	$ 0	$ 0

Derivatives, Fair Value Hedging

Derivatives, Fair Value Hedging Basis Adjustment (Details) - Fair Value Hedging [Member] - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Hedged Items Currently Designated [Member] | Debt securities [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of Assets	$ 40,081	$ 37,857
Hedged Asset, Fair Value Hedge, Cumulative Basis Adjustments	256	(157)
Hedged Items Currently Designated [Member] | Loans [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of Assets	0	0
Hedged Asset, Fair Value Hedge, Cumulative Basis Adjustments	0	0
Hedged Items Currently Designated [Member] | Mortgage loans held for sale [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of Assets	316	448
Hedged Asset, Fair Value Hedge, Cumulative Basis Adjustments	4	7
Hedged Items Currently Designated [Member] | Deposits [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of (Liabilities)	(59,921)	(56,535)
Hedged Liability, Fair Value Hedge, Cumulative Basis Adjustments	(82)	115
Hedged Items Currently Designated [Member] | Long-term debt [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of (Liabilities)	(111,404)	(104,341)
Hedged Liability, Fair Value Hedge, Cumulative Basis Adjustments	(2,935)	(742)
Not designated as hedging instrument [Member] | Debt securities [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of Assets	4,596	4,938
Hedged Asset, Discontinued Fair Value Hedge, Cumulative Basis Adjustments	110	238
Not designated as hedging instrument [Member] | Loans [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of Assets	0	0
Hedged Asset, Discontinued Fair Value Hedge, Cumulative Basis Adjustments	0	0
Not designated as hedging instrument [Member] | Mortgage loans held for sale [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of Assets	228	0
Hedged Asset, Discontinued Fair Value Hedge, Cumulative Basis Adjustments	2	0
Not designated as hedging instrument [Member] | Deposits [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of (Liabilities)	0	0
Hedged Liability, Discontinued Fair Value Hedge, Cumulative Basis Adjustments	0	0
Not designated as hedging instrument [Member] | Long-term debt [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of (Liabilities)	(25,588)	(25,539)
Hedged Liability, Discontinued Fair Value Hedge, Cumulative Basis Adjustments	319	366
Foreign exchange contract [Member] | Hedged Items Currently Designated [Member] | Debt securities [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of Assets	1,600	1,600
Foreign exchange contract [Member] | Hedged Items Currently Designated [Member] | Long-term debt [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Carrying Amount of (Liabilities)	(6,200)	(6,300)
Re-designated as hedging instrument [Member] | Debt securities [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Hedged Asset, Fair Value Hedge, Cumulative Basis Adjustments	1,000	1,400
Re-designated as hedging instrument [Member] | Long-term debt [Member]
Fair Value Hedging Basis Adjustment [Abstract]
Hedged Liability, Fair Value Hedge, Cumulative Basis Adjustments	$ 77	$ 66

Derivatives, Derivatives Not De

Derivatives, Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Derivatives (Textual) [Abstract]
Gains (losses) on derivatives used to hedge residential mortgage servicing rights	$ 962	$ (1,220)
Net Derivative Gains (Losses) From Economic Hedges Related To Mortgage Loans Held for Sale and Derivative Loan Commitments	(151)	625
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	(2,638)	(50)
Not designated as hedging instrument [Member] | Mortgage banking [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	929	(854)
Not designated as hedging instrument [Member] | Net gain (loss) from equity securities [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	(885)	(58)
Not designated as hedging instrument [Member] | Net gain (loss) from trading activities [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	(2,412)	1,203
Not designated as hedging instrument [Member] | Other [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	(270)	(341)
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	(71)	(799)
Derivatives (Textual) [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Loss	(18)
Derivative Instruments Not Designated as Hedging Instruments, Gain		28
Not designated as hedging instrument [Member] | Economic hedges [Member] | Interest contracts [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	816	(586)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Equity contract [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	(878)	(58)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Foreign exchange contract [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	(24)	(159)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Credit contract [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	4
Not designated as hedging instrument [Member] | Economic hedges [Member] | Mortgage banking [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	811	(595)
Derivatives (Textual) [Abstract]
Fair Value of Net Asset (Liability) From Economic Hedges Related To Mortgage Servicing Activities	663		$ 757
Not designated as hedging instrument [Member] | Economic hedges [Member] | Mortgage banking [Member] | Interest contracts [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	811	(595)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Mortgage banking [Member] | Equity contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Mortgage banking [Member] | Foreign exchange contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Mortgage banking [Member] | Credit contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from equity securities [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	(885)	(58)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from equity securities [Member] | Interest contracts [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from equity securities [Member] | Equity contract [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	(885)	(58)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from equity securities [Member] | Foreign exchange contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from equity securities [Member] | Credit contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from trading activities [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from trading activities [Member] | Interest contracts [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from trading activities [Member] | Equity contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from trading activities [Member] | Foreign exchange contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Net gain (loss) from trading activities [Member] | Credit contract [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	0	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Other [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	3	(146)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Other [Member] | Interest contracts [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	5	9
Not designated as hedging instrument [Member] | Economic hedges [Member] | Other [Member] | Equity contract [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	7	0
Not designated as hedging instrument [Member] | Economic hedges [Member] | Other [Member] | Foreign exchange contract [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	(24)	(159)
Not designated as hedging instrument [Member] | Economic hedges [Member] | Other [Member] | Credit contract [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	4
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	(2,567)	749
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Interest contracts [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	(166)	126
Derivatives (Textual) [Abstract]
Aggregate fair value of derivative loan commitments net asset (liability)	58		$ 60
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Commodity contract [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	39
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Equity contract [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	(2,422)	264
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Foreign exchange contract [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	14	310
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Credit contract [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	(44)	10
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Mortgage banking [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	118	(259)
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Mortgage banking [Member] | Interest contracts [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	118	(259)
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Mortgage banking [Member] | Commodity contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Mortgage banking [Member] | Equity contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Mortgage banking [Member] | Foreign exchange contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Mortgage banking [Member] | Credit contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from equity securities [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from equity securities [Member] | Interest contracts [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from equity securities [Member] | Commodity contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from equity securities [Member] | Equity contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from equity securities [Member] | Foreign exchange contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from equity securities [Member] | Credit contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from trading activities [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	(2,412)	1,203
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from trading activities [Member] | Interest contracts [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	(284)	385
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from trading activities [Member] | Commodity contract [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	39
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from trading activities [Member] | Equity contract [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	(2,149)	459
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from trading activities [Member] | Foreign exchange contract [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	14	310
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Net gain (loss) from trading activities [Member] | Credit contract [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	(44)	10
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Other [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)	(195)
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Other [Member] | Interest contracts [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Other [Member] | Commodity contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Other [Member] | Equity contract [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)	(195)
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Other [Member] | Foreign exchange contract [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	0	0
Not designated as hedging instrument [Member] | Customer accommodation trading, and other derivatives [Member] | Other [Member] | Credit contract [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	$ 0	$ 0

Derivatives, Sold and Purchased

Derivatives, Sold and Purchased Credit Derivatives (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	$ 125	$ 182
Notional amount Protection sold	13,426	11,741
Notional amount Protection purchased with identical underlyings	4,563	3,898
Notional Net protection sold	8,863	7,843
Notional Other protection purchased	18,077	17,082
Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	7,113	6,629
Corporate bonds [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	36	59
Notional amount Protection sold	2,010	2,037
Notional amount Protection purchased with identical underlyings	1,332	1,374
Notional Net protection sold	678	663
Notional Other protection purchased	$ 1,843	$ 1,460
Corporate bonds [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2019	Jan. 1, 2019
Corporate bonds [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2027	Dec. 31, 2027
Corporate bonds [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 483	$ 441
Structured products [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	37	62
Notional amount Protection sold	102	133
Notional amount Protection purchased with identical underlyings	90	121
Notional Net protection sold	12	12
Notional Other protection purchased	$ 113	$ 113
Structured products [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2022	Jan. 1, 2022
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	$ 97	$ 128
Credit default swap [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	0	1
Notional amount Protection sold	4,916	3,618
Notional amount Protection purchased with identical underlyings	2,773	1,998
Notional Net protection sold	2,143	1,620
Notional Other protection purchased	$ 3,690	$ 2,896
Credit default swap [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2019	Jan. 1, 2019
Credit default swap [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2028	Dec. 31, 2028
Credit default swap [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 585	$ 582
Commercial [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	42	49
Notional amount Protection sold	352	389
Notional amount Protection purchased with identical underlyings	326	363
Notional Net protection sold	26	26
Notional Other protection purchased	$ 50	$ 51
Commercial [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2047	Jan. 1, 2047
Commercial [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2058	Dec. 31, 2058
Commercial [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 97	$ 109
Asset-backed securities [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	8	9
Notional amount Protection sold	42	42
Notional amount Protection purchased with identical underlyings	42	42
Notional Net protection sold	0	0
Notional Other protection purchased	$ 1	$ 1
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	$ 42	$ 42
Other Credit Derivatives [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Fair value liability	2	2
Notional amount Protection sold	6,004	5,522
Notional amount Protection purchased with identical underlyings	0	0
Notional Net protection sold	6,004	5,522
Notional Other protection purchased	$ 12,380	$ 12,561
Other Credit Derivatives [Member] | Minimum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Jan. 1, 2019	Jan. 1, 2018
Other Credit Derivatives [Member] | Maximum [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Derivative range of maturity dates	Dec. 31, 2048	Dec. 31, 2048
Other Credit Derivatives [Member] | Non-investment grade [Member]
Details of Sold and Purchased Credit Derivatives [Abstract]
Notional amount Protection sold	$ 5,809	$ 5,327

Derivatives Credit-Risk Conting

Derivatives Credit-Risk Contingent Feature Textuals (Details) - USD ($) $ in Billions	Mar. 31, 2019	Dec. 31, 2018
Derivatives [Abstract]
Aggregate fair value of derivative instruments with credit-risk-related contingent features, net liability	$ 8.7	$ 7.4
Collateral for derivative instruments with credit-risk-related contingent features	7.2	5.6
Additional collateral for derivative instruments with credit-risk-related contingent features	$ 1.5	$ 1.8

Fair Value, Measurements From B

Fair Value, Measurements From Brokers or Third Party Pricing Services (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Financial assets
Trading debt securities		$ 70,378	$ 69,989
Available-for-sale, at fair value		268,099	269,912
Marketable equity securities		32,586	29,556
Equity securities	[1]	58,440	55,148
Derivative assets		34,949	34,560
Financial liabilities
Derivative liabilities		(33,417)	(32,047)
Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale, at fair value		15,106	13,348
Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale, at fair value		49,700	49,264
Mortgage-backed securities [Member]
Financial assets
Available-for-sale, at fair value		156,491	160,203
Other debt securities [Member]
Financial assets
Available-for-sale, at fair value		5,133	5,483
Brokers [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Derivative assets		0	0
Financial liabilities
Derivative liabilities		0	0
Other liabilities (2)		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Debt securities [Member]
Financial assets
Trading debt securities		0	0
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed securities [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Equity securities [Member]
Financial assets
Equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Marketable equity securities [Member]
Financial assets
Marketable equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 1 [Member] | Nonmarketable equity securities [Member]
Financial assets
Nonmarketable equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets
Derivative assets		0	0
Financial liabilities
Derivative liabilities		0	0
Other liabilities (2)		0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Debt securities [Member]
Financial assets
Trading debt securities		0	0
Available-for-sale, at fair value		45	45
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities [Member]
Financial assets
Available-for-sale, at fair value		45	45
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Equity securities [Member]
Financial assets
Equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Marketable equity securities [Member]
Financial assets
Marketable equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 2 [Member] | Nonmarketable equity securities [Member]
Financial assets
Nonmarketable equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Derivative assets		0	0
Financial liabilities
Derivative liabilities		0	0
Other liabilities (2)		0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Debt securities [Member]
Financial assets
Trading debt securities		0	0
Available-for-sale, at fair value		130	129
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. Treasury and federal agencies [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Securities of U.S. states and political subdivisions [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed securities [Member]
Financial assets
Available-for-sale, at fair value		0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities [Member]
Financial assets
Available-for-sale, at fair value		130	129
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Equity securities [Member]
Financial assets
Equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Marketable equity securities [Member]
Financial assets
Marketable equity securities		0	0
Brokers [Member] | Fair Value, Inputs, Level 3 [Member] | Nonmarketable equity securities [Member]
Financial assets
Nonmarketable equity securities		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Derivative assets		17	17
Financial liabilities
Derivative liabilities		(21)	(12)
Other liabilities (2)		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Debt securities [Member]
Financial assets
Trading debt securities		485	899
Available-for-sale, at fair value		12,144	10,399
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, at fair value		12,144	10,399
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, at fair value		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed securities [Member]
Financial assets
Available-for-sale, at fair value		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities [Member]
Financial assets
Available-for-sale, at fair value		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Equity securities [Member]
Financial assets
Equity securities		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Marketable equity securities [Member]
Financial assets
Marketable equity securities		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 1 [Member] | Nonmarketable equity securities [Member]
Financial assets
Nonmarketable equity securities		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets
Derivative assets		0	0
Financial liabilities
Derivative liabilities		(1)	0
Other liabilities (2)		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Debt securities [Member]
Financial assets
Trading debt securities		310	256
Available-for-sale, at fair value		252,934	255,780
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, at fair value		2,962	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, at fair value		49,230	48,377
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities [Member]
Financial assets
Available-for-sale, at fair value		156,450	160,162
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities [Member]
Financial assets
Available-for-sale, at fair value		44,292	44,292
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Equity securities [Member]
Financial assets
Equity securities		161	159
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Marketable equity securities [Member]
Financial assets
Marketable equity securities		161	158
Third party pricing services [Member] | Fair Value, Inputs, Level 2 [Member] | Nonmarketable equity securities [Member]
Financial assets
Nonmarketable equity securities		0	1
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Derivative assets		0	0
Financial liabilities
Derivative liabilities		0	0
Other liabilities (2)		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Debt securities [Member]
Financial assets
Trading debt securities		0	0
Available-for-sale, at fair value		855	842
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, at fair value		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, at fair value		43	43
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed securities [Member]
Financial assets
Available-for-sale, at fair value		41	41
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities [Member]
Financial assets
Available-for-sale, at fair value		771	758
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Equity securities [Member]
Financial assets
Equity securities		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Marketable equity securities [Member]
Financial assets
Marketable equity securities		0	0
Third party pricing services [Member] | Fair Value, Inputs, Level 3 [Member] | Nonmarketable equity securities [Member]
Financial assets
Nonmarketable equity securities		$ 0	$ 0
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Fair Value, Assets and Liabilit

Fair Value, Assets and Liabilities Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Assets:
Trading debt securities		$ 70,378	$ 69,989
Available-for-sale, at fair value		268,099	269,912
Mortgage servicing rights		13,336	14,649
Derivative assets		34,949	34,560
Net amounts in consolidated balance sheet, assets		11,238	10,770
Marketable equity securities		32,586	29,556
Equity securities	[1]	58,440	55,148
Liabilities:
Total derivative liabilities		(33,417)	(32,047)
Fair value liability derivatives, net		(7,393)	(8,499)
Interest rate contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets		7,095	6,406
Liabilities:
Fair value liability derivatives, net		(2,501)	(3,156)
Commodity contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets		682	739
Liabilities:
Fair value liability derivatives, net		(497)	(1,609)
Equity contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets		2,151	2,227
Liabilities:
Fair value liability derivatives, net		(2,806)	(2,133)
Foreign exchange contract [Member]
Assets:
Net amounts in consolidated balance sheet, assets		1,258	1,359
Liabilities:
Fair value liability derivatives, net		(1,577)	(1,591)
US Treasury and Government [Member]
Assets:
Available-for-sale, at fair value		15,106	13,348
Securities of U.S. states and political subdivisions [Member]
Assets:
Available-for-sale, at fair value		49,700	49,264
Mortgage-backed securities [Member]
Assets:
Available-for-sale, at fair value		156,491	160,203
Federal agencies [Member]
Assets:
Available-for-sale, at fair value		150,663	153,203
Residential [Member]
Assets:
Available-for-sale, at fair value		1,456	2,775
Commercial [Member]
Assets:
Available-for-sale, at fair value		4,372	4,225
Corporate debt securities [Member]
Assets:
Available-for-sale, at fair value		6,354	6,271
Collateralized loan obligations [Member]
Assets:
Available-for-sale, at fair value		35,315	35,343
Collateralized debt obligations [Member]
Assets:
Available-for-sale, at fair value		755	800
Other debt securities [Member]
Assets:
Available-for-sale, at fair value		5,133	5,483
Fair Value, Measurements, Recurring [Member]
Assets:
Mortgage loans held for sale		11,091	11,771
Loans held for sale		998	1,469
Loans		225	244
Mortgage servicing rights		13,336	14,649
Fair value asset derivatives, netting		(23,711)	(23,790)
Net amounts in consolidated balance sheet, assets		11,238	10,770
Total assets recorded at fair value		407,951	408,360
Liabilities:
Fair value liability derivatives, netting		26,024	23,548
Fair value liability derivatives, net		(7,393)	(8,499)
Total short sale liabilities		(21,586)	(19,720)
Other liabilities (2)		(2)	(2)
Total liabilities recorded at fair value		(28,981)	(28,221)
Fair Value, Measurements, Recurring [Member] | Excluding NAV Investments [Member]
Assets:
Total assets recorded at fair value		407,834	408,258
Fair Value, Measurements, Recurring [Member] | Interest rate contract [Member]
Assets:
Derivative assets		20,449	18,435
Liabilities:
Total derivative liabilities		(17,262)	(16,308)
Fair Value, Measurements, Recurring [Member] | Commodity contract [Member]
Assets:
Derivative assets		1,528	1,588
Liabilities:
Total derivative liabilities		(1,160)	(2,336)
Fair Value, Measurements, Recurring [Member] | Equity contract [Member]
Assets:
Derivative assets		6,768	7,545
Liabilities:
Total derivative liabilities		(7,960)	(6,010)
Fair Value, Measurements, Recurring [Member] | Foreign exchange contract [Member]
Assets:
Derivative assets		5,900	6,714
Liabilities:
Total derivative liabilities		(6,712)	(7,113)
Fair Value, Measurements, Recurring [Member] | Credit Risk Contract [Member]
Assets:
Derivative assets		304	278
Liabilities:
Total derivative liabilities		(323)	(280)
Fair Value, Measurements, Recurring [Member] | Debt securities [Member]
Assets:
Trading debt securities		70,378	69,989
Available-for-sale, at fair value		268,099	269,912
Fair Value, Measurements, Recurring [Member] | US Treasury and Government [Member]
Assets:
Trading debt securities		22,555	23,417
Available-for-sale, at fair value		15,106	13,348
Liabilities:
Total short sale liabilities		(12,781)	(12,261)
Fair Value, Measurements, Recurring [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading debt securities		3,385	3,275
Available-for-sale, at fair value		49,700	49,264
Fair Value, Measurements, Recurring [Member] | Other trading debt securities [Member]
Assets:
Trading debt securities		26	22
Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities [Member]
Assets:
Trading debt securities		31,162	30,715
Available-for-sale, at fair value		156,491	160,203
Fair Value, Measurements, Recurring [Member] | Federal agencies [Member]
Assets:
Available-for-sale, at fair value		150,663	153,203
Fair Value, Measurements, Recurring [Member] | Residential [Member]
Assets:
Available-for-sale, at fair value		1,456	2,775
Fair Value, Measurements, Recurring [Member] | Commercial [Member]
Assets:
Available-for-sale, at fair value		4,372	4,225
Fair Value, Measurements, Recurring [Member] | Mortgage backed securities, other [Member]
Liabilities:
Total short sale liabilities		(404)	(47)
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member]
Assets:
Trading debt securities		11,114	10,757
Available-for-sale, at fair value		6,354	6,271
Liabilities:
Total short sale liabilities		(5,075)	(4,505)
Fair Value, Measurements, Recurring [Member] | Collateralized loan obligations [Member]
Assets:
Trading debt securities		949	910
Available-for-sale, at fair value		35,315	35,343
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member]
Assets:
Trading debt securities		1,187	893
Available-for-sale, at fair value		5,132	5,482
Fair Value, Measurements, Recurring [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale, at fair value		945	925
Fair Value, Measurements, Recurring [Member] | Home equity loans [Member]
Assets:
Available-for-sale, at fair value		14	112
Fair Value, Measurements, Recurring [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale, at fair value		4,173	4,445
Fair Value, Measurements, Recurring [Member] | Other debt securities [Member]
Assets:
Available-for-sale, at fair value		1	1
Fair Value, Measurements, Recurring [Member] | Equity securities [Member]
Liabilities:
Total short sale liabilities		(3,326)	(2,904)
Fair Value, Measurements, Recurring [Member] | Equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Equity securities		32,469	29,454
Fair Value, Measurements, Recurring [Member] | Marketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Marketable equity securities		26,068	23,962
Fair Value, Measurements, Recurring [Member] | Nonmarketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Nonmarketable equity securities		6,401	5,492
Fair Value, Measurements, Recurring [Member] | Other securities sold, not yet purchased [Member]
Liabilities:
Total short sale liabilities		0	(3)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Mortgage loans held for sale		0	0
Loans 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		2,020	1,711
Liabilities:
Fair value liability derivatives, netting		0	0
Fair value liability derivatives, net		(1,421)	(1,525)
Total short sale liabilities		(15,887)	(14,752)
Other liabilities (2)		0	0
Total liabilities recorded at fair value		(17,308)	(16,277)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Excluding NAV Investments [Member]
Assets:
Total assets recorded at fair value		56,952	55,874
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest rate contract [Member]
Assets:
Derivative assets		67	46
Liabilities:
Total derivative liabilities		(18)	(21)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commodity contract [Member]
Assets:
Derivative assets		0	0
Liabilities:
Total derivative liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity contract [Member]
Assets:
Derivative assets		1,936	1,648
Liabilities:
Total derivative liabilities		(1,382)	(1,492)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign exchange contract [Member]
Assets:
Derivative assets		17	17
Liabilities:
Total derivative liabilities		(21)	(12)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Credit Risk Contract [Member]
Assets:
Derivative assets		0	0
Liabilities:
Total derivative liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Debt securities [Member]
Assets:
Trading debt securities		17,584	20,525
Available-for-sale, at fair value		12,180	10,433
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member]
Assets:
Trading debt securities		17,584	20,525
Available-for-sale, at fair value		12,144	10,399
Liabilities:
Total short sale liabilities		(12,562)	(11,850)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other trading debt securities [Member]
Assets:
Trading debt securities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-backed securities [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Federal agencies [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Residential [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commercial [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage backed securities, other [Member]
Liabilities:
Total short sale liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate debt securities [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		36	34
Liabilities:
Total short sale liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Collateralized loan obligations [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-backed securities [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Home equity loans [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity securities [Member]
Liabilities:
Total short sale liabilities		(3,325)	(2,902)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Equity securities		25,168	23,205
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Marketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Marketable equity securities		25,168	23,205
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Nonmarketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Nonmarketable equity securities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other securities sold, not yet purchased [Member]
Liabilities:
Total short sale liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Mortgage loans held for sale		10,093	10,774
Loans held for sale		927	1,409
Loans		0	0
Mortgage servicing rights		0	0
Fair value asset derivatives, netting		0	0
Net amounts in consolidated balance sheet, assets		31,120	31,279
Liabilities:
Fair value liability derivatives, netting		0	0
Fair value liability derivatives, net		(30,141)	(28,973)
Total short sale liabilities		(5,699)	(4,968)
Other liabilities (2)		0	0
Total liabilities recorded at fair value		(35,840)	(33,941)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Excluding NAV Investments [Member]
Assets:
Total assets recorded at fair value		349,437	350,852
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest rate contract [Member]
Assets:
Derivative assets		20,254	18,294
Liabilities:
Total derivative liabilities		(17,217)	(16,217)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodity contract [Member]
Assets:
Derivative assets		1,503	1,535
Liabilities:
Total derivative liabilities		(1,117)	(2,287)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity contract [Member]
Assets:
Derivative assets		3,275	4,582
Liabilities:
Total derivative liabilities		(4,859)	(3,186)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign exchange contract [Member]
Assets:
Derivative assets		5,872	6,689
Liabilities:
Total derivative liabilities		(6,664)	(7,067)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Credit Risk Contract [Member]
Assets:
Derivative assets		216	179
Liabilities:
Total derivative liabilities		(284)	(216)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Debt securities [Member]
Assets:
Trading debt securities		52,463	49,174
Available-for-sale, at fair value		253,914	257,435
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member]
Assets:
Trading debt securities		4,971	2,892
Available-for-sale, at fair value		2,962	2,949
Liabilities:
Total short sale liabilities		(219)	(411)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Trading debt securities		3,385	3,272
Available-for-sale, at fair value		49,230	48,820
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other trading debt securities [Member]
Assets:
Trading debt securities		11	6
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities [Member]
Assets:
Trading debt securities		31,162	30,715
Available-for-sale, at fair value		156,450	160,162
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Federal agencies [Member]
Assets:
Available-for-sale, at fair value		150,663	153,203
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential [Member]
Assets:
Available-for-sale, at fair value		1,456	2,775
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial [Member]
Assets:
Available-for-sale, at fair value		4,331	4,184
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage backed securities, other [Member]
Liabilities:
Total short sale liabilities		(404)	(47)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate debt securities [Member]
Assets:
Trading debt securities		11,073	10,723
Available-for-sale, at fair value		5,941	5,867
Liabilities:
Total short sale liabilities		(5,075)	(4,505)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized loan obligations [Member]
Assets:
Trading debt securities		674	673
Available-for-sale, at fair value		34,560	34,543
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed securities [Member]
Assets:
Trading debt securities		1,187	893
Available-for-sale, at fair value		4,770	5,093
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale, at fair value		945	925
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Home equity loans [Member]
Assets:
Available-for-sale, at fair value		14	112
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale, at fair value		3,811	4,056
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities [Member]
Assets:
Available-for-sale, at fair value		1	1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity securities [Member]
Liabilities:
Total short sale liabilities		(1)	(2)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Equity securities		920	781
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Marketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Marketable equity securities		900	757
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Nonmarketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Nonmarketable equity securities		20	24
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other securities sold, not yet purchased [Member]
Liabilities:
Total short sale liabilities		0	(3)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Mortgage loans held for sale		998	997
Loans held for sale		71	60
Loans		225	244
Mortgage servicing rights		13,336	14,649
Fair value asset derivatives, netting		0	0
Net amounts in consolidated balance sheet, assets		1,809	1,570
Total assets recorded at fair value		25,200	25,300
Liabilities:
Fair value liability derivatives, netting		0	0
Fair value liability derivatives, net		(1,855)	(1,549)
Total short sale liabilities		0	0
Other liabilities (2)		(2)	(2)
Total liabilities recorded at fair value		(1,857)	(1,551)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Excluding NAV Investments [Member]
Assets:
Total assets recorded at fair value		25,156	25,322
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member]
Assets:
Derivative assets		128	95
Liabilities:
Total derivative liabilities		(27)	(70)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commodity contract [Member]
Assets:
Derivative assets		25	53
Liabilities:
Total derivative liabilities		(43)	(49)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member]
Assets:
Derivative assets		1,557	1,315
Liabilities:
Total derivative liabilities		(1,719)	(1,332)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign exchange contract [Member]
Assets:
Derivative assets		11	8
Liabilities:
Total derivative liabilities		(27)	(34)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit Risk Contract [Member]
Assets:
Derivative assets		88	99
Liabilities:
Total derivative liabilities		(39)	(64)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Debt securities [Member]
Assets:
Trading debt securities		331	290
Available-for-sale, at fair value		2,005	2,044
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury and Government [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		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 debt securities		0	3
Available-for-sale, at fair value		470	444
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other trading debt securities [Member]
Assets:
Trading debt securities		15	16
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed securities [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		41	41
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Federal agencies [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Residential [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial [Member]
Assets:
Available-for-sale, at fair value		41	41
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage backed securities, other [Member]
Liabilities:
Total short sale liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate debt securities [Member]
Assets:
Trading debt securities		41	34
Available-for-sale, at fair value		377	370
Liabilities:
Total short sale liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized loan obligations [Member]
Assets:
Trading debt securities		275	237
Available-for-sale, at fair value		755	800
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized debt obligations [Member]
Assets:
Available-for-sale, at fair value		755	800
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed securities [Member]
Assets:
Trading debt securities		0	0
Available-for-sale, at fair value		362	389
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Auto loans and leases [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Home equity loans [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other asset-backed securities [Member]
Assets:
Available-for-sale, at fair value		362	389
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities [Member]
Assets:
Available-for-sale, at fair value		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity securities [Member]
Liabilities:
Total short sale liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Equity securities		6,381	5,468
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Marketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Marketable equity securities		0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Nonmarketable equity securities [Member] | Excluding NAV Investments [Member]
Assets:
Nonmarketable equity securities		6,381	5,468
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other securities sold, not yet purchased [Member]
Liabilities:
Total short sale liabilities		0	0
Fair Value, Measurements, Recurring [Member] | Fair value measured at net asset value per share [Member] | Nonmarketable equity securities [Member] | Including NAV Investments [Member]
Assets:
Nonmarketable equity securities		$ 117	$ 102
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Fair Value, Assets and Liabil_2

Fair Value, Assets and Liabilities Measured on Recurring Basis Level 3 Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity securities [Member]
Assets:
Balance, beginning of period	$ 5,468	$ 5,203
Net gains (losses) included in net income	926	108
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(1)	(96)
Transfers into Level 3	0	4
Transfers out of Level 3	(12)	0
Balance, end of period	6,381	5,219
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	926	101
Nonmarketable equity securities [Member]
Assets:
Balance, beginning of period	5,468	5,203
Net gains (losses) included in net income	926	108
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(1)	(96)
Transfers into Level 3	0	4
Transfers out of Level 3	(12)	0
Balance, end of period	6,381	5,219
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	926	101
Trading debt securities [Member] | Debt securities [Member]
Assets:
Balance, beginning of period	290	407
Net gains (losses) included in net income	(2)	1
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	43	(37)
Transfers into Level 3	1	0
Transfers out of Level 3	(1)	0
Balance, end of period	331	371
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	3	16
Trading debt securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Balance, beginning of period	3	3
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(2)	0
Transfers into Level 3	0	0
Transfers out of Level 3	(1)	0
Balance, end of period	0	3
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Trading debt securities [Member] | Corporate debt securities [Member]
Assets:
Balance, beginning of period	34	31
Net gains (losses) included in net income	2	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	4	3
Transfers into Level 3	1	0
Transfers out of Level 3	0	0
Balance, end of period	41	34
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	2	0
Trading debt securities [Member] | Collateralized loan obligations [Member]
Assets:
Balance, beginning of period	237	354
Net gains (losses) included in net income	(3)	2
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	41	(40)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	275	316
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	1	16
Trading debt securities [Member] | Other trading debt securities [Member]
Assets:
Balance, beginning of period	16	19
Net gains (losses) included in net income	(1)	(1)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	15	18
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Debt securities [Member]
Assets:
Balance, beginning of period	2,044	2,994
Net gains (losses) included in net income	7	19
Net gains (losses) included in other comprehensive income	2	36
Purchases, sales, issuances and settlements, net	(48)	(139)
Transfers into Level 3	0	0
Transfers out of Level 3	0	(269)
Balance, end of period	2,005	2,641
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Balance, beginning of period	444	925
Net gains (losses) included in net income	0	4
Net gains (losses) included in other comprehensive income	3	(2)
Purchases, sales, issuances and settlements, net	23	(41)
Transfers into Level 3	0	0
Transfers out of Level 3	0	(269)
Balance, end of period	470	617
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Mortgage-backed securities [Member]
Assets:
Balance, beginning of period	41	76
Net gains (losses) included in net income	0	1
Net gains (losses) included in other comprehensive income	0	(1)
Purchases, sales, issuances and settlements, net	0	(8)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	41	68
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Residential [Member]
Assets:
Balance, beginning of period	0	1
Net gains (losses) included in net income	0	0
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	0	1
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Commercial [Member]
Assets:
Balance, beginning of period	41	75
Net gains (losses) included in net income	0	1
Net gains (losses) included in other comprehensive income	0	(1)
Purchases, sales, issuances and settlements, net	0	(8)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	41	67
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Corporate debt securities [Member]
Assets:
Balance, beginning of period	370	407
Net gains (losses) included in net income	1	1
Net gains (losses) included in other comprehensive income	4	3
Purchases, sales, issuances and settlements, net	2	(1)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	377	410
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Collateralized loan obligations [Member]
Assets:
Balance, beginning of period	800	1,020
Net gains (losses) included in net income	6	5
Net gains (losses) included in other comprehensive income	(4)	43
Purchases, sales, issuances and settlements, net	(47)	(23)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	755	1,045
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Asset-backed securities [Member]
Assets:
Balance, beginning of period	389	566
Net gains (losses) included in net income	0	8
Net gains (losses) included in other comprehensive income	(1)	(7)
Purchases, sales, issuances and settlements, net	(26)	(66)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	362	501
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Available-for-sale securities [Member] | Other asset-backed securities [Member]
Assets:
Balance, beginning of period	389	566
Net gains (losses) included in net income	0	8
Net gains (losses) included in other comprehensive income	(1)	(7)
Purchases, sales, issuances and settlements, net	(26)	(66)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	362	501
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Mortgage loans held for sale [Member]
Assets:
Balance, beginning of period	997	998
Net gains (losses) included in net income	15	(23)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(66)	(37)
Transfers into Level 3	56	15
Transfers out of Level 3	(4)	(3)
Balance, end of period	998	950
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	15	(23)
Loans held for sale [Member]
Assets:
Balance, beginning of period	60	14
Net gains (losses) included in net income	0	2
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	11	(16)
Transfers into Level 3	37	0
Transfers out of Level 3	(37)	0
Balance, end of period	71	0
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	0	0
Loans [Member]
Assets:
Balance, beginning of period	244	376
Net gains (losses) included in net income	0	(1)
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(19)	(23)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	225	352
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(2)	(4)
Mortgage servicing rights [Member]
Assets:
Balance, beginning of period	14,649	13,625
Net gains (losses) included in net income	(1,373)	847
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	60	569
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	13,336	15,041
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(891)	1,330
Derivative [Member]
Assets and Liabilities:
Balance, beginning of period	21	(378)
Net gains (losses) included in net income	32	(260)
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(78)	311
Transfers into Level 3	11	0
Transfers out of Level 3	(32)	49
Balance, end of period	(46)	(278)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	27	(47)
Derivative [Member] | Interest rate contract [Member]
Assets and Liabilities:
Balance, beginning of period	25	71
Net gains (losses) included in net income	187	(345)
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(111)	266
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	101	(8)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	132	(73)
Derivative [Member] | Commodity contract [Member]
Assets and Liabilities:
Balance, beginning of period	4	19
Net gains (losses) included in net income	(51)	15
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	27	(24)
Transfers into Level 3	2	0
Transfers out of Level 3	0	0
Balance, end of period	(18)	10
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(15)	0
Derivative [Member] | Equity contract [Member]
Assets and Liabilities:
Balance, beginning of period	(17)	(511)
Net gains (losses) included in net income	(119)	69
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	(3)	71
Transfers into Level 3	9	0
Transfers out of Level 3	(32)	49
Balance, end of period	(162)	(322)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	(114)	25
Derivative [Member] | Foreign exchange contract [Member]
Assets and Liabilities:
Balance, beginning of period	(26)	7
Net gains (losses) included in net income	7	(7)
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	3	1
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	(16)	1
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	11	(3)
Derivative [Member] | Credit contract [Member]
Assets and Liabilities:
Balance, beginning of period	35	36
Net gains (losses) included in net income	8	8
Total net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	6	(3)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	49	41
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	13	4
Other liabilities [Member]
Liabilities:
Balance, beginning of period	(2)	(3)
Net gains (losses) included in net income	0	1
Net gains (losses) included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, net	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	(2)	(2)
Net unrealized gains (losses) included in income related to assets and liabilities held at period end	$ 0	$ 0

Fair Value, Assets and Liabil_3

Fair Value, Assets and Liabilities Measured on Recurring Basis Level 3 Reconciliation Breakout (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity securities [Member]
Assets:
Purchases	$ 0	$ 0
Sales	(1)	(17)
Issuances	0	0
Settlements	0	(79)
Net	(1)	(96)
Nonmarketable equity securities [Member]
Assets:
Purchases	0	0
Sales	(1)	(17)
Issuances	0	0
Settlements	0	(79)
Net	(1)	(96)
Trading debt securities [Member] | Debt securities [Member]
Assets:
Purchases	135	186
Sales	(88)	(192)
Issuances	0	0
Settlements	(4)	(31)
Net	43	(37)
Trading debt securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(2)	0
Net	(2)	0
Trading debt securities [Member] | Corporate debt securities [Member]
Assets:
Purchases	5	4
Sales	(1)	(1)
Issuances	0	0
Settlements	0	0
Net	4	3
Trading debt securities [Member] | Collateralized loan obligations [Member]
Assets:
Purchases	130	182
Sales	(87)	(191)
Issuances	0	0
Settlements	(2)	(31)
Net	41	(40)
Trading debt securities [Member] | Other trading debt securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Available-for-sale securities [Member] | Debt securities [Member]
Assets:
Purchases	3	0
Sales	(3)	(12)
Issuances	115	59
Settlements	(163)	(186)
Net	(48)	(139)
Available-for-sale securities [Member] | Securities of U.S. states and political subdivisions [Member]
Assets:
Purchases	0	0
Sales	0	(4)
Issuances	49	10
Settlements	(26)	(47)
Net	23	(41)
Available-for-sale securities [Member] | Mortgage-backed securities [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	(8)
Net	0	(8)
Available-for-sale securities [Member] | Residential [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	0	0
Available-for-sale securities [Member] | Commercial [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	(8)
Net	0	(8)
Available-for-sale securities [Member] | Corporate debt securities [Member]
Assets:
Purchases	3	0
Sales	0	0
Issuances	0	0
Settlements	(1)	(1)
Net	2	(1)
Available-for-sale securities [Member] | Collateralized loan obligations [Member]
Assets:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(47)	(23)
Net	(47)	(23)
Available-for-sale securities [Member] | Asset-backed securities [Member]
Assets:
Purchases	0	0
Sales	(3)	(8)
Issuances	66	49
Settlements	(89)	(107)
Net	(26)	(66)
Available-for-sale securities [Member] | Other asset-backed securities [Member]
Assets:
Purchases	0	0
Sales	(3)	(8)
Issuances	66	49
Settlements	(89)	(107)
Net	(26)	(66)
Mortgage loans held for sale [Member]
Assets:
Purchases	16	27
Sales	(93)	(83)
Issuances	46	58
Settlements	(35)	(39)
Net	(66)	(37)
Loans held for sale [Member]
Assets:
Purchases	12	0
Sales	(1)	(16)
Issuances	0	0
Settlements	0	0
Net	11	(16)
Loans [Member]
Assets:
Purchases	2	1
Sales	0	0
Issuances	3	4
Settlements	(24)	(28)
Net	(19)	(23)
Mortgage servicing rights [Member]
Assets:
Purchases	0	0
Sales	(281)	(4)
Issuances	341	573
Settlements	0	0
Net	60	569
Derivative [Member]
Assets and Liabilities:
Purchases	6	3
Sales	0	(2)
Issuances	0	0
Settlements	(84)	310
Net	(78)	311
Derivative [Member] | Interest rate contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(111)	266
Net	(111)	266
Derivative [Member] | Commodity contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	27	(24)
Net	27	(24)
Derivative [Member] | Equity contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(3)	71
Net	(3)	71
Derivative [Member] | Foreign exchange contract [Member]
Assets and Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	3	1
Net	3	1
Derivative [Member] | Credit contract [Member]
Assets and Liabilities:
Purchases	6	3
Sales	0	(2)
Issuances	0	0
Settlements	0	(4)
Net	6	(3)
Other liabilities [Member]
Liabilities:
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	0	0
Net	$ 0	$ 0

Fair Value, Assets and Liabil_4

Fair Value, Assets and Liabilities Measured on a Recurring Basis Level 3 Valuation Techniques and Significant Unobservable Inputs (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)$ / loan	Dec. 31, 2018USD ($)$ / loan	Dec. 31, 2017
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage servicing rights	$ 13,336	$ 14,649
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	268,099	269,912
Securities of U.S. states and political subdivisions [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	49,700	49,264
Corporate debt securities [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	6,354	6,271
Collateralized loan obligations [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	35,315	35,343
Collateralized debt obligations [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	755	800
Recurring [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale, carried at fair value	11,091	11,771
Loans	225	244
Mortgage servicing rights	13,336	14,649
Fair Value Disclosures, Textual [Abstract]
Total assets recorded at fair value	407,951	408,360
Total liabilities recorded at fair value	28,981	28,221
Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale, carried at fair value	998	997
Loans	225	244
Mortgage servicing rights	13,336	14,649
Total insignificant level 3 assets, net of liabilities	91	93
Assets, fair value disclosure, net of liabilities	23,299	23,771
Fair Value Disclosures, Textual [Abstract]
Total assets recorded at fair value	25,200	25,300
Total liabilities recorded at fair value	1,857	1,551
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale, carried at fair value	16	15
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale, carried at fair value	982	982
Loans	225	244
Mortgage servicing rights	$ 13,336	$ 14,649
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	(0.563)	(0.563)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.026	0.011
Loans, Measurement Input	0.039	0.034
Servicing Asset, Measurement Input	0.069	0.071
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0	0
Loans, Measurement Input	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Cost of Service Per Loan [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Servicing Asset, Measurement Input | $ / loan	63	62
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Prepayment Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.042	0.032
Loans, Measurement Input	0.040	0.029
Servicing Asset, Measurement Input	0.105	0.090
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	(0.063)	(0.063)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.064	0.066
Loans, Measurement Input	0.048	0.064
Servicing Asset, Measurement Input	0.138	0.153
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.166	0.156
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.487	0.433
Loans, Measurement Input	0.348	0.348
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Cost of Service Per Loan [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Servicing Asset, Measurement Input | $ / loan	508	507
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Prepayment Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.137	0.134
Loans, Measurement Input	1	1
Servicing Asset, Measurement Input	0.252	0.235
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	(0.380)	(0.363)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.053	0.055
Loans, Measurement Input	0.042	0.042
Servicing Asset, Measurement Input	0.076	0.081
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.008	0.008
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.279	0.234
Loans, Measurement Input	0.112	0.102
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Cost of Service Per Loan [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Servicing Asset, Measurement Input | $ / loan	103	106
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Prepayment Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage Loans Held for Sale, Measurement Input	0.056	0.046
Loans, Measurement Input	0.866	0.872
Servicing Asset, Measurement Input	0.113	0.099
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	$ 43	$ (35)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.500	0.500
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Prepayment Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.028	0.028
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.050	0.050
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.500	0.500
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Prepayment Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.250	0.250
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.020	0.020
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.500	0.500
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate contract [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Prepayment Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.153	0.138
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Loan Commitments [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	$ 58	$ 60
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Loan Commitments [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Fall-out Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.010	0.010
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Loan Commitments [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Initial-value Servicing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	(0.00373)		(0.00366)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Loan Commitments [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Fall-out Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.990	0.990
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Loan Commitments [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Initial-value Servicing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.00672		0.00917
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Loan Commitments [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Fall-out Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.205	0.194
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Loan Commitments [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Initial-value Servicing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.00201		0.00185
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	$ 120	$ 104
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Option model [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	$ (282)	$ (121)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Weighted Average Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative, Term of Contract	1 year 3 months	1 year
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Conversion Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	(0.090)	(0.093)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Minimum [Member] | Option model [Member] | Measurement Input, Correlation Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	(0.770)	(0.770)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Minimum [Member] | Option model [Member] | Measurement Input, Price Volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.065	0.065
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Weighted Average Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative, Term of Contract	3 years 9 months	3 years
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Conversion Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Maximum [Member] | Option model [Member] | Measurement Input, Correlation Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.990	0.990
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Maximum [Member] | Option model [Member] | Measurement Input, Price Volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	1	1
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Weighted Average Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative, Term of Contract	2 years 2 months	1 year 9 months
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Conversion Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	(0.077)	(0.078)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Weighted Average [Member] | Option model [Member] | Measurement Input, Correlation Factor [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.245	0.216
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity contract [Member] | Weighted Average [Member] | Option model [Member] | Measurement Input, Price Volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.190	0.218
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	$ 2	$ 3
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Option model [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net derivative assets and liabilities	$ 47	$ 32
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Minimum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	(0.425)	(0.155)
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Minimum [Member] | Option model [Member] | Measurement Input, Credit Spread [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.001	0.009
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Minimum [Member] | Option model [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.130	0.130
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Maximum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.302	0.400
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Maximum [Member] | Option model [Member] | Measurement Input, Credit Spread [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.184	0.215
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Maximum [Member] | Option model [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.600	0.600
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Weighted Average [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	(0.054)	0.035
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Weighted Average [Member] | Option model [Member] | Measurement Input, Credit Spread [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.010	0.013
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Credit contract [Member] | Weighted Average [Member] | Option model [Member] | Measurement Input, Loss Severity [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Derivative Asset (Liability) Net, Measurement Input	0.452	0.452
Recurring [Member] | Non modified loans [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Cost of Service Per Loan [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Servicing Asset, Measurement Input | $ / loan	63	62
Recurring [Member] | Non modified loans [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Cost of Service Per Loan [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Servicing Asset, Measurement Input | $ / loan	199	204
Recurring [Member] | Debt securities [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	$ 268,099	$ 269,912
Recurring [Member] | Debt securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	2,005	2,044
Recurring [Member] | Securities of U.S. states and political subdivisions [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	49,700	49,264
Recurring [Member] | Securities of U.S. states and political subdivisions [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	470	444
Recurring [Member] | Government, healthcare and other revenue bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	427	404
Recurring [Member] | Government, healthcare and other revenue bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation Technique, Vendor Pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	$ 43	$ 43
Recurring [Member] | Government, healthcare and other revenue bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.018	0.021
Recurring [Member] | Government, healthcare and other revenue bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.064	0.064
Recurring [Member] | Government, healthcare and other revenue bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.030	0.034
Recurring [Member] | Corporate debt securities [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	$ 6,354	$ 6,271
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	377	370
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	64	56
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	225	220
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation Technique, Vendor Pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	$ 129	$ 128
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	(0.111)	(0.113)
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.020	0.040
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.153	0.166
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.149	0.117
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	(0.021)	(0.014)
Recurring [Member] | Corporate debt securities [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.085	0.085
Recurring [Member] | Collateralized loan obligations [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	$ 35,315	$ 35,343
Recurring [Member] | Collateralized loan obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	755	800
Recurring [Member] | Collateralized loan obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	275	298
Recurring [Member] | Collateralized loan obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation Technique, Vendor Pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	$ 755	$ 739
Recurring [Member] | Collateralized loan obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	(0.120)	(0.135)
Recurring [Member] | Collateralized loan obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.161	0.221
Recurring [Member] | Collateralized loan obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.021	0.032
Recurring [Member] | Asset-backed securities [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	$ 5,132	$ 5,482
Recurring [Member] | Asset-backed securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	362	389
Recurring [Member] | Other asset-backed securities [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	4,173	4,445
Recurring [Member] | Other asset-backed securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	362	389
Recurring [Member] | Diversified payment rights [Member] | Fair Value, Inputs, Level 3 [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	$ 150	$ 171
Recurring [Member] | Diversified payment rights [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.031	0.034
Recurring [Member] | Diversified payment rights [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.068	0.062
Recurring [Member] | Diversified payment rights [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.040	0.044
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Discounted cash flow [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	$ 195	$ 198
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation Technique, Vendor Pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Debt securities, trading and available-for-sale	$ 17	$ 20
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.045	0.046
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted cash flow [Member] | Measurement Input, Weighted Average Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Trading and Available-for-sale, Term	1 year 146 days	1 year 1 month
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.054	0.052
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted cash flow [Member] | Measurement Input, Weighted Average Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Trading and Available-for-sale, Term	1 year 11 months	1 year 6 months
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.046	0.047
Recurring [Member] | Other commercial and consumer [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted cash flow [Member] | Measurement Input, Weighted Average Life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Debt Securities, Trading and Available-for-sale, Term	1 year 10 months	1 year 1 month
Recurring [Member] | Collateralized debt obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures, Textual [Abstract]
Available-for-sale, at fair value	$ 755	$ 800
Recurring [Member] | Nonmarketable equity securities [Member] | Fair Value, Inputs, Level 3 [Member] | Market comparable pricing [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Nonmarketable equity securities	$ 6,381	$ 5,468
Recurring [Member] | Nonmarketable equity securities [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Nonmarketable equity securities, measurement input	(22.50%)	(20.60%)
Recurring [Member] | Nonmarketable equity securities [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Nonmarketable equity securities, measurement input	(6.50%)	(4.30%)
Recurring [Member] | Nonmarketable equity securities [Member] | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Market comparable pricing [Member] | Measurement Input, Comparability Adjustment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Nonmarketable equity securities, measurement input	(16.70%)	(15.80%)

Fair Value, Assets Recorded at

Fair Value, Assets Recorded at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	$ 82,667	$ 79,850
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	2,984	2,446
Loans held for sale	5	313
Loans	264	686
Other assets	169	155
Total assets recorded at fair value	4,021	4,531
Nonrecurring [Member] | Nonmarketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable equity securities	599	931
Nonrecurring [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	147	339
Nonrecurring [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	117	347
Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	0	0
Loans held for sale	0	0
Loans	0	0
Other assets	0	0
Total assets recorded at fair value	0	0
Nonrecurring [Member] | Level 1 [Member] | Nonmarketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable equity securities	0	0
Nonrecurring [Member] | Level 1 [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Nonrecurring [Member] | Level 1 [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	1,712	1,213
Loans held for sale	5	313
Loans	264	685
Other assets	169	149
Total assets recorded at fair value	2,703	3,134
Nonrecurring [Member] | Level 2 [Member] | Nonmarketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable equity securities	553	774
Nonrecurring [Member] | Level 2 [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	147	339
Nonrecurring [Member] | Level 2 [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	117	346
Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	1,272	1,233
Loans held for sale	0	0
Loans	0	1
Other assets	0	6
Total assets recorded at fair value	1,318	1,397
Nonrecurring [Member] | Level 3 [Member] | Nonmarketable equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Nonmarketable equity securities	46	157
Nonrecurring [Member] | Level 3 [Member] | Total Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Nonrecurring [Member] | Level 3 [Member] | Total Consumer [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 0	$ 1

Fair Value, Changes in Fair Val

Fair Value, Changes in Fair Value of Assets Recorded at Fair Value on Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Mortgage loans held for sale (LOCOM)	$ 20	$ 7
Loans held for sale	0	(82)
Loans	(153)	(188)
Nonmarketable equity securities	149	208
Other assets	(18)	(22)
Total	(2)	(77)
Total Commercial [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Loans	(74)	(81)
Total Consumer [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis Increase (Decrease) [Line Items]
Loans	$ (79)	$ (107)

Fair Value, Assets Recorded a_2

Fair Value, Assets Recorded at Fair Value on a Nonrecurring Basis Level 3 Valuation Techniques and Significant Unobservable Inputs (Details) - Nonrecurring [Member] - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale	$ 2,984	$ 2,446
Total assets recorded at fair value	4,021	4,531
Residential [Member] | Government Insured Or Guaranteed [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale	1,200	1,200
Residential [Member] | Non Government Insured Or Guaranteed [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale	26	27
Nonmarketable equity securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Nonmarketable equity securities	$ 599	$ 931
Measurement Input, Default Rate [Member] | Discounted cash flow [Member] | Minimum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	0.20%	0.20%
Measurement Input, Default Rate [Member] | Discounted cash flow [Member] | Maximum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	4.10%	2.30%
Measurement Input, Default Rate [Member] | Discounted cash flow [Member] | Weighted Average [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	1.90%	1.40%
Measurement Input, Discount Rate [Member] | Discounted cash flow [Member] | Minimum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	1.50%	1.50%
Measurement Input, Discount Rate [Member] | Discounted cash flow [Member] | Minimum [Member] | Nonmarketable equity securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Nonmarketable equity securities, measurement input	0.00%	10.50%
Measurement Input, Discount Rate [Member] | Discounted cash flow [Member] | Maximum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	8.50%	8.50%
Measurement Input, Discount Rate [Member] | Discounted cash flow [Member] | Maximum [Member] | Nonmarketable equity securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Nonmarketable equity securities, measurement input	0.00%	10.50%
Measurement Input, Discount Rate [Member] | Discounted cash flow [Member] | Weighted Average [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	4.00%	4.00%
Measurement Input, Discount Rate [Member] | Discounted cash flow [Member] | Weighted Average [Member] | Nonmarketable equity securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Nonmarketable equity securities, measurement input	0.00%	10.50%
Measurement Input, Loss Severity [Member] | Discounted cash flow [Member] | Minimum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	0.40%	0.50%
Measurement Input, Loss Severity [Member] | Discounted cash flow [Member] | Maximum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	70.30%	66.00%
Measurement Input, Loss Severity [Member] | Discounted cash flow [Member] | Weighted Average [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	1.70%	1.70%
Measurement Input, Prepayment Rate [Member] | Discounted cash flow [Member] | Minimum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	2.70%	3.50%
Measurement Input, Prepayment Rate [Member] | Discounted cash flow [Member] | Maximum [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	100.00%	100.00%
Measurement Input, Prepayment Rate [Member] | Discounted cash flow [Member] | Weighted Average [Member] | Residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage loans held for sale (residential), measurement input	40.70%	46.50%
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale	$ 1,272	$ 1,233
Insignificant level 3 assets	46	157
Total assets recorded at fair value	1,318	1,397
Fair Value, Inputs, Level 3 [Member] | Nonmarketable equity securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Nonmarketable equity securities	46	157
Fair Value, Inputs, Level 3 [Member] | Discounted cash flow [Member] | Residential [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortgage loans held for sale	1,272	1,233
Fair Value, Inputs, Level 3 [Member] | Discounted cash flow [Member] | Nonmarketable equity securities [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Nonmarketable equity securities	$ 0	$ 7

Fair Value, Option, Carrying Am

Fair Value, Option, Carrying Amount (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Equity securities, carried at fair value	$ 32,586	$ 29,556
Fair value option election [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage loans held for sale	11,091	11,771
Loans held for sale	998	1,469
Loans	225	244
Fair value option election [Member] | Mortgage loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgage loans held for sale	11,091	11,771
Mortgage loans held for sale, unpaid principal	10,883	11,573
Loans, Loans held for sale and mortgage loans held for sale, aggregate difference	208	198
Nonaccrual loans	128	127
Nonaccrual loans, unpaid principal	157	158
Nonaccrual loans, aggregate difference	(29)	(31)
Loans 90 days or more past due and still accruing	7	7
Loans 90 days or more past due and still accruing, unpaid principal	9	9
Loans 90 days or more past due and still accruing, aggregate difference	(2)	(2)
Fair value option election [Member] | Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale	998	1,469
Loans held for sale, unpaid principal	1,056	1,536
Loans, Loans held for sale and mortgage loans held for sale, aggregate difference	(58)	(67)
Nonaccrual loans	57	21
Nonaccrual loans, unpaid principal	71	32
Nonaccrual loans, aggregate difference	(14)	(11)
Fair value option election [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans	225	244
Loans, unpaid principal	255	274
Loans, Loans held for sale and mortgage loans held for sale, aggregate difference	(30)	(30)
Nonaccrual loans	166	179
Nonaccrual loans, unpaid principal	196	208
Nonaccrual loans, aggregate difference	(30)	(29)
Fair value option election [Member] | Nonmarketable equity securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Equity securities, carried at fair value	$ 6,381	$ 5,455

Fair Value, Option, Changes in

Fair Value, Option, Changes in Fair Value Included in Earnings (Details) - Fair value option election [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Mortgage banking noninterest income [Member] | Mortgage loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	$ 214	$ (59)
Mortgage banking noninterest income [Member] | Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Mortgage banking noninterest income [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Mortgage banking noninterest income [Member] | Nonmarketable equity securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Mortgage banking noninterest income [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Mortgage loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	14	6
Net gains (losses) from trading activities [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Nonmarketable equity securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from trading activities [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	(1)	(1)
Net gains (losses) from equity securities [Member] | Mortgage loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from equity securities [Member] | Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from equity securities [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Net gains (losses) from equity securities [Member] | Nonmarketable equity securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	926	101
Net gains (losses) from equity securities [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Other noninterest income [Member] | Mortgage loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Other noninterest income [Member] | Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	1	0
Other noninterest income [Member] | Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	(1)
Other noninterest income [Member] | Nonmarketable equity securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	0	0
Other noninterest income [Member] | Other interests held [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) on changes in fair value	$ 0	$ 0

Fair Value, Option, Instrument

Fair Value, Option, Instrument Specific Credit Risk (Details) - Fair value option election [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	$ 10	$ 7
Mortgage loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	(4)	1
Loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (losses) attributable to instrument-specific credit risk	$ 14	$ 6

Fair Value, Estimates for Finan

Fair Value, Estimates for Financial Instruments Excluding those Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Financial assets
Cash and due from banks		$ 20,650	$ 23,551
Interest-earning deposits with banks		128,318	149,736
Federal funds sold and securities purchased under resale agreements		98,621	80,207
Held-to-maturity debt securities		144,990	144,788
Mortgage loans held for sale	[1]	15,016	15,126
Loans held for sale	[1]	1,018	2,041
Loans	[1]	948,249	953,110
Financial liabilities
Deposits		1,264,013	1,286,170
Short-term borrowings		106,597	105,787
Long-term debt		236,339	229,044
Carrying value [Member]
Financial assets
Cash and due from banks		20,650	23,551
Interest-earning deposits with banks		128,318	149,736
Federal funds sold and securities purchased under resale agreements		98,621	80,207
Held-to-maturity debt securities		144,990	144,788
Mortgage loans held for sale		3,925	3,355
Loans held for sale		20	572
Loans		919,308	923,703
Nonmarketable equity securities		5,732	5,643
Financial assets fair value disclosure		1,321,564	1,331,555
Financial liabilities
Deposits		138,494	130,645
Short-term borrowings		106,597	105,787
Long-term debt		236,305	229,008
Financial liabilities fair value disclosure		481,396	465,440
Fair Value Disclosures, Textual [Abstract]
Deposit Liabilities With No Defined or Contractual Maturity		1,100,000	1,200,000
Capital lease obligations		34	36
Carrying value [Member] | Finance leases financing receivable [Member]
Financial assets
Loans		19,100	19,700
Estimated fair value [Member]
Financial assets
Cash and due from banks		20,650	23,551
Interest-earning deposits with banks		128,318	149,736
Federal funds sold and securities purchased under resale agreements		98,621	80,207
Held-to-maturity debt securities		144,699	142,115
Mortgage loans held for sale		3,973	3,362
Loans held for sale		20	572
Loans		919,818	917,915
Nonmarketable equity securities		5,765	5,675
Financial assets fair value disclosure		1,321,864	1,323,133
Financial liabilities
Deposits		138,475	130,089
Short-term borrowings		106,597	105,789
Long-term debt		238,851	228,134
Financial liabilities fair value disclosure		483,923	464,012
Fair Value Disclosures, Textual [Abstract]
Loan commitments and standby, commercial and similar letters of credit		1,000	1,000
Estimated fair value [Member] | Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks		20,650	23,551
Interest-earning deposits with banks		128,036	149,542
Federal funds sold and securities purchased under resale agreements		0	0
Held-to-maturity debt securities		44,693	44,339
Mortgage loans held for sale		0	0
Loans held for sale		0	0
Loans		0	0
Nonmarketable equity securities		0	0
Financial assets fair value disclosure		193,379	217,432
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
Interest-earning deposits with banks		282	194
Federal funds sold and securities purchased under resale agreements		98,621	80,207
Held-to-maturity debt securities		99,475	97,275
Mortgage loans held for sale		2,701	2,129
Loans held for sale		20	572
Loans		46,649	45,190
Nonmarketable equity securities		0	0
Financial assets fair value disclosure		247,748	225,567
Financial liabilities
Deposits		110,129	107,448
Short-term borrowings		106,597	105,789
Long-term debt		237,250	225,904
Financial liabilities fair value disclosure		453,976	439,141
Estimated fair value [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Cash and due from banks		0	0
Interest-earning deposits with banks		0	0
Federal funds sold and securities purchased under resale agreements		0	0
Held-to-maturity debt securities		531	501
Mortgage loans held for sale		1,272	1,233
Loans held for sale		0	0
Loans		873,169	872,725
Nonmarketable equity securities		5,765	5,675
Financial assets fair value disclosure		880,737	880,134
Financial liabilities
Deposits		28,346	22,641
Short-term borrowings		0	0
Long-term debt		1,601	2,230
Financial liabilities fair value disclosure		$ 29,947	$ 24,871
[1]	(1)Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

Preferred Stock (Details)

Preferred Stock (Details) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)vote$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares
Detail of Preferred Stock [Abstract]
Preferred Stock, Shares authorized and designated | shares	9,586,770	9,586,770
ESOP, Liquidation preference per share | $ / shares	$ 0	$ 0
ESOP, Shares authorized and designated | shares	1,406,460	1,406,460
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares issued and outstanding | shares	9,377,211	9,377,216
Voting Rights	If issued, preference shares would be limited to one vote per share
Preferred Stock, Liquidation Preference, Value	$ 24,458	$ 24,458
Carrying value	23,214	23,214
Discount	$ 1,244	$ 1,244
ESOP Shares issued and outstanding | shares	1,406,460	1,406,460
ESOP Liquidation preference value	$ 1,407	$ 1,407
ESOP Carrying value	1,407	1,407
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 I - Floating Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend Payment Rate, Variable	the greater of three-month LIBOR plus 0.93% and 5.56975%	the greater of three-month LIBOR plus 0.93% and 5.56975%
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 K - Floating Non-Cumulative Perpetual Class A Preferred Stock [Member]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend Payment Rate, Variable	three-month LIBOR plus 3.77%	three-month LIBOR plus 3.77%
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	3,967,995	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]
Detail of Preferred Stock [Abstract]
Preferred Stock, Dividend rate (percent)	5.625%	5.625%
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	27,600	27,600
Preferred Stock, Liquidation Preference, Value	$ 690	$ 690
Carrying value	690	690
Discount	$ 0	$ 0

ESOP Preferred Stock (Details)

ESOP Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Additional paid-in capital included related to preferred stock	$ 95	$ 95
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	1,406,460	1,406,460
Carrying value	$ 1,407	$ 1,407
Unearned ESOP shares	$ (1,502)	$ (1,502)
Employee Stock Ownership Plan Preferred Stock 2018 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	336,945	336,945
Carrying value	$ 337	$ 337
Employee Stock Ownership Plan Preferred Stock 2018 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	7.00%	7.00%
Employee Stock Ownership Plan Preferred Stock 2018 [Member] | Maximum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	8.00%	8.00%
Employee Stock Ownership Plan Preferred Stock 2017 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	222,210	222,210
Carrying value	$ 222	$ 222
Employee Stock Ownership Plan Preferred Stock 2017 [Member] | Minimum [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Adjustable dividend rate	7.00%	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%	8.00%
Employee Stock Ownership Plan Preferred Stock 2016 [Member]
Detail of Employee Stock Ownership Plan Preferred Stock [Abstract]
Shares issued and outstanding	233,835	233,835
Carrying value	$ 234	$ 234
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	144,338	144,338
Carrying value	$ 144	$ 144
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	174,151	174,151
Carrying value	$ 174	$ 174
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	133,948	133,948
Carrying value	$ 134	$ 134
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	77,634	77,634
Carrying value	$ 78	$ 78
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	61,796	61,796
Carrying value	$ 62	$ 62
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	21,603	21,603
Carrying value	$ 22	$ 22
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%
Stock Compensation Plan [Member] | Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, redemption price per share	$ 1,000

Revenue from Contracts with C_3

Revenue from Contracts with Customers, Revenue by Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	$ 12,311	$ 12,238
Mortgage banking	708	934
Insurance	96	114
Net gains (losses) from trading activities	357	243
Net gains on debt securities	125	1
Net gains from equity securities	814	783
Lease income	443	455
Other income of the segment (1)	574	602
Total noninterest income	9,298	9,696
Revenue	21,609	21,934
Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	1,094	1,173
Trust and investment fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	3,373	3,683
Brokerage advisory, commissions and other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2,193	2,403
Trust and investment management
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	786	850
Investment banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	394	430
Card fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	944	908
Other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	770	800
Lending related charges and fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	347	380
Cash network fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	109	126
Commercial real estate brokerage commissions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	81	85
Wire transfer and other remittance fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	113	116
All other fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	120	93
Other [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	(572)	(601)
Mortgage banking	2	2
Insurance	(10)	(11)
Net gains (losses) from trading activities	0	0
Net gains on debt securities	0	0
Net gains from equity securities	0	0
Lease income	0	0
Other income of the segment (1)	(69)	(74)
Total noninterest income	(759)	(816)
Revenue	(1,331)	(1,417)
Other [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(3)	(4)
Other [Member] | Trust and investment fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(675)	(725)
Other [Member] | Brokerage advisory, commissions and other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(458)	(486)
Other [Member] | Trust and investment management
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(214)	(239)
Other [Member] | Investment banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(3)	0
Other [Member] | Card fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(1)	(1)
Other [Member] | Other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(3)	(3)
Other [Member] | Lending related charges and fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(2)	(2)
Other [Member] | Cash network fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Other [Member] | Commercial real estate brokerage commissions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Other [Member] | Wire transfer and other remittance fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(1)	(1)
Other [Member] | All other fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Community Banking [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	7,248	7,195
Mortgage banking	641	842
Insurance	11	28
Net gains (losses) from trading activities	5	(1)
Net gains on debt securities	37	0
Net gains from equity securities	601	684
Lease income	0	0
Other income of the segment (1)	768	594
Total noninterest income	4,502	4,635
Revenue	11,750	11,830
Community Banking [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	610	639
Community Banking [Member] | Trust and investment fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	639	701
Community Banking [Member] | Brokerage advisory, commissions and other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	449	478
Community Banking [Member] | Trust and investment management
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	210	233
Community Banking [Member] | Investment banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(20)	(10)
Community Banking [Member] | Card fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	858	821
Community Banking [Member] | Other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	332	327
Community Banking [Member] | Lending related charges and fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	65	76
Community Banking [Member] | Cash network fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	109	125
Community Banking [Member] | Commercial real estate brokerage commissions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Community Banking [Member] | Wire transfer and other remittance fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	64	63
Community Banking [Member] | All other fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	94	63
Wholesale Banking [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	4,534	4,532
Mortgage banking	68	93
Insurance	78	79
Net gains (losses) from trading activities	333	225
Net gains on debt securities	88	1
Net gains from equity securities	77	93
Lease income	443	455
Other income of the segment (1)	(120)	88
Total noninterest income	2,577	2,747
Revenue	7,111	7,279
Wholesale Banking [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	483	534
Wholesale Banking [Member] | Trust and investment fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	604	620
Wholesale Banking [Member] | Brokerage advisory, commissions and other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	78	67
Wholesale Banking [Member] | Trust and investment management
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	114	113
Wholesale Banking [Member] | Investment banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	412	440
Wholesale Banking [Member] | Card fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	86	87
Wholesale Banking [Member] | Other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	437	472
Wholesale Banking [Member] | Lending related charges and fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	282	304
Wholesale Banking [Member] | Cash network fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	1
Wholesale Banking [Member] | Commercial real estate brokerage commissions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	81	85
Wholesale Banking [Member] | Wire transfer and other remittance fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	48	52
Wholesale Banking [Member] | All other fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	26	30
Wealth and Investment Management [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	1,101	1,112
Mortgage banking	(3)	(3)
Insurance	17	18
Net gains (losses) from trading activities	19	19
Net gains on debt securities	0	0
Net gains from equity securities	136	6
Lease income	0	0
Other income of the segment (1)	(5)	(6)
Total noninterest income	2,978	3,130
Revenue	4,079	4,242
Wealth and Investment Management [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	4	4
Wealth and Investment Management [Member] | Trust and investment fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2,805	3,087
Wealth and Investment Management [Member] | Brokerage advisory, commissions and other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2,124	2,344
Wealth and Investment Management [Member] | Trust and investment management
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	676	743
Wealth and Investment Management [Member] | Investment banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	5	0
Wealth and Investment Management [Member] | Card fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	1	1
Wealth and Investment Management [Member] | Other fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	4	4
Wealth and Investment Management [Member] | Lending related charges and fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2	2
Wealth and Investment Management [Member] | Cash network fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Wealth and Investment Management [Member] | Commercial real estate brokerage commissions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Wealth and Investment Management [Member] | Wire transfer and other remittance fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2	2
Wealth and Investment Management [Member] | All other fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	$ 0	$ 0

Revenue from Contracts with C_4

Revenue from Contracts with Customers, Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Fee income	$ 1,094	$ 1,173
Overdraft fees
Disaggregation of Revenue [Line Items]
Fee income	418	414
Account charges
Disaggregation of Revenue [Line Items]
Fee income	676	759
Brokerage advisory, commissions and other fees
Disaggregation of Revenue [Line Items]
Fee income	2,193	2,403
Asset-based revenue (1)
Disaggregation of Revenue [Line Items]
Fee income	1,580	1,743
Trailing commissions
Disaggregation of Revenue [Line Items]
Fee income	280	331
Transactional revenue
Disaggregation of Revenue [Line Items]
Fee income	394	444
Other revenue
Disaggregation of Revenue [Line Items]
Fee income	219	216
Trust and investment management
Disaggregation of Revenue [Line Items]
Fee income	786	850
Investment management fees
Disaggregation of Revenue [Line Items]
Fee income	478	534
Trust fees
Disaggregation of Revenue [Line Items]
Fee income	245	256
Other revenue
Disaggregation of Revenue [Line Items]
Fee income	63	60
Card fees
Disaggregation of Revenue [Line Items]
Fee income	944	908
Credit card interchange and network revenues (1)
Disaggregation of Revenue [Line Items]
Fee income	275	258
Credit card rewards and rebates
Disaggregation of Revenue [Line Items]
Other cost of revenue	354	343
Debit card interchange and network revenues
Disaggregation of Revenue [Line Items]
Fee income	507	479
Late fees, cash advance fees, balance transfer fees, and annual fees
Disaggregation of Revenue [Line Items]
Fee income	162	171
Other [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Fee income	(3)	(4)
Other [Member] | Overdraft fees
Disaggregation of Revenue [Line Items]
Fee income	0	0
Other [Member] | Account charges
Disaggregation of Revenue [Line Items]
Fee income	(3)	(4)
Other [Member] | Brokerage advisory, commissions and other fees
Disaggregation of Revenue [Line Items]
Fee income	(458)	(486)
Other [Member] | Asset-based revenue (1)
Disaggregation of Revenue [Line Items]
Fee income	(343)	(371)
Other [Member] | Transactional revenue
Disaggregation of Revenue [Line Items]
Fee income	(98)	(100)
Other [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	(17)	(15)
Other [Member] | Trust and investment management
Disaggregation of Revenue [Line Items]
Fee income	(214)	(239)
Other [Member] | Investment management fees
Disaggregation of Revenue [Line Items]
Fee income	0	0
Other [Member] | Trust fees
Disaggregation of Revenue [Line Items]
Fee income	(214)	(239)
Other [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	0	0
Other [Member] | Card fees
Disaggregation of Revenue [Line Items]
Fee income	(1)	(1)
Other [Member] | Credit card interchange and network revenues (1)
Disaggregation of Revenue [Line Items]
Fee income	(1)	(1)
Other [Member] | Debit card interchange and network revenues
Disaggregation of Revenue [Line Items]
Fee income	0	0
Other [Member] | Late fees, cash advance fees, balance transfer fees, and annual fees
Disaggregation of Revenue [Line Items]
Fee income	0	0
Community Banking [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Fee income	610	639
Community Banking [Member] | Overdraft fees
Disaggregation of Revenue [Line Items]
Fee income	417	412
Community Banking [Member] | Account charges
Disaggregation of Revenue [Line Items]
Fee income	193	227
Community Banking [Member] | Brokerage advisory, commissions and other fees
Disaggregation of Revenue [Line Items]
Fee income	449	478
Community Banking [Member] | Asset-based revenue (1)
Disaggregation of Revenue [Line Items]
Fee income	343	371
Community Banking [Member] | Transactional revenue
Disaggregation of Revenue [Line Items]
Fee income	89	93
Community Banking [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	17	14
Community Banking [Member] | Trust and investment management
Disaggregation of Revenue [Line Items]
Fee income	210	233
Community Banking [Member] | Investment management fees
Disaggregation of Revenue [Line Items]
Fee income	1	0
Community Banking [Member] | Trust fees
Disaggregation of Revenue [Line Items]
Fee income	209	221
Community Banking [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	0	12
Community Banking [Member] | Card fees
Disaggregation of Revenue [Line Items]
Fee income	858	821
Community Banking [Member] | Credit card interchange and network revenues (1)
Disaggregation of Revenue [Line Items]
Fee income	189	171
Community Banking [Member] | Debit card interchange and network revenues
Disaggregation of Revenue [Line Items]
Fee income	507	479
Community Banking [Member] | Late fees, cash advance fees, balance transfer fees, and annual fees
Disaggregation of Revenue [Line Items]
Fee income	162	171
Wholesale Banking [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Fee income	483	534
Wholesale Banking [Member] | Overdraft fees
Disaggregation of Revenue [Line Items]
Fee income	1	2
Wholesale Banking [Member] | Account charges
Disaggregation of Revenue [Line Items]
Fee income	482	532
Wholesale Banking [Member] | Brokerage advisory, commissions and other fees
Disaggregation of Revenue [Line Items]
Fee income	78	67
Wholesale Banking [Member] | Asset-based revenue (1)
Disaggregation of Revenue [Line Items]
Fee income	0	0
Wholesale Banking [Member] | Transactional revenue
Disaggregation of Revenue [Line Items]
Fee income	16	12
Wholesale Banking [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	62	55
Wholesale Banking [Member] | Trust and investment management
Disaggregation of Revenue [Line Items]
Fee income	114	113
Wholesale Banking [Member] | Investment management fees
Disaggregation of Revenue [Line Items]
Fee income	0	0
Wholesale Banking [Member] | Trust fees
Disaggregation of Revenue [Line Items]
Fee income	82	86
Wholesale Banking [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	32	27
Wholesale Banking [Member] | Card fees
Disaggregation of Revenue [Line Items]
Fee income	86	87
Wholesale Banking [Member] | Credit card interchange and network revenues (1)
Disaggregation of Revenue [Line Items]
Fee income	86	87
Wholesale Banking [Member] | Debit card interchange and network revenues
Disaggregation of Revenue [Line Items]
Fee income	0	0
Wholesale Banking [Member] | Late fees, cash advance fees, balance transfer fees, and annual fees
Disaggregation of Revenue [Line Items]
Fee income	0	0
Wealth and Investment Management [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Fee income	4	4
Wealth and Investment Management [Member] | Overdraft fees
Disaggregation of Revenue [Line Items]
Fee income	0	0
Wealth and Investment Management [Member] | Account charges
Disaggregation of Revenue [Line Items]
Fee income	4	4
Wealth and Investment Management [Member] | Brokerage advisory, commissions and other fees
Disaggregation of Revenue [Line Items]
Fee income	2,124	2,344
Wealth and Investment Management [Member] | Asset-based revenue (1)
Disaggregation of Revenue [Line Items]
Fee income	1,580	1,743
Wealth and Investment Management [Member] | Transactional revenue
Disaggregation of Revenue [Line Items]
Fee income	387	439
Wealth and Investment Management [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	157	162
Wealth and Investment Management [Member] | Trust and investment management
Disaggregation of Revenue [Line Items]
Fee income	676	743
Wealth and Investment Management [Member] | Investment management fees
Disaggregation of Revenue [Line Items]
Fee income	477	534
Wealth and Investment Management [Member] | Trust fees
Disaggregation of Revenue [Line Items]
Fee income	168	188
Wealth and Investment Management [Member] | Other revenue
Disaggregation of Revenue [Line Items]
Fee income	31	21
Wealth and Investment Management [Member] | Card fees
Disaggregation of Revenue [Line Items]
Fee income	1	1
Wealth and Investment Management [Member] | Credit card interchange and network revenues (1)
Disaggregation of Revenue [Line Items]
Fee income	1	1
Wealth and Investment Management [Member] | Debit card interchange and network revenues
Disaggregation of Revenue [Line Items]
Fee income	0	0
Wealth and Investment Management [Member] | Late fees, cash advance fees, balance transfer fees, and annual fees
Disaggregation of Revenue [Line Items]
Fee income	$ 0	$ 0

Employee Benefits, Components o

Employee Benefits, Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		117 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019
Qualified Plan [Member]
Components of net periodic benefit cost [Abstract]
Service cost	$ 3	$ 1
Interest cost	105	98
Expected return on plan assets	(142)	(160)
Amortization of net actuarial loss (gain)	37	33
Amortization of prior service credit	0	0
Settlement loss	0	0
Net periodic benefit cost (income)	3	(28)
Nonqualified Plan [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	0
Interest cost	6	5
Expected return on plan assets	0	0
Amortization of net actuarial loss (gain)	2	3
Amortization of prior service credit	0	0
Settlement loss	2	3
Net periodic benefit cost (income)	10	11
Other benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0	0
Interest cost	5	5
Expected return on plan assets	(7)	(7)
Amortization of net actuarial loss (gain)	(4)	(4)
Amortization of prior service credit	(2)	(3)
Settlement loss	0	0
Net periodic benefit cost (income)	$ (8)	$ (9)
Cash Balance Plan [Member]
Components of net periodic benefit cost [Abstract]
Net periodic benefit cost (income)			$ 0

Earnings Per Common Share, Calc

Earnings Per Common Share, Calculation of Earnings and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Common Share [Abstract]
Wells Fargo net income	$ 5,860	$ 5,136
Less: Preferred stock dividends and other	353	403
Wells Fargo net income applicable to common stock (numerator)	$ 5,507	$ 4,733
Earnings per common share
Average common shares outstanding (denominator)	4,551.5	4,885.7
Per share	$ 1.21	$ 0.97
Diluted earnings per common share
Average common shares outstanding (in shares)	4,551.5	4,885.7
Diluted average common shares outstanding (denominator)	4,584	4,930.7
Per share	$ 1.20	$ 0.96
Stock Option [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	2.5	9.9
Restricted Share Rights [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	30	28.3
Warrants [Member]
Diluted earnings per common share
Weighted average number of diluted shares outstanding, adjustment (in shares)	0	6.8

Earnings Per Common Share, Anti

Earnings Per Common Share, Antidilutive Securities Excluded from the Calculation of Diluted Earnings per Common Share (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Instruments	0	0.9

Earnings Per Common Share Divid

Earnings Per Common Share Dividends Declared Per Common Shares (Details) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Dividends declared per common share (in dollars per share)	$ 0.450	$ 0.390

Other Comprehensive Income, Com

Other Comprehensive Income, Components of Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Debt securities:
Net unrealized gains (losses) arising during the period, Before tax	$ 2,831	$ (3,443)
Net unrealized gains (losses) arising during the period, Tax effect	(695)	848
Net unrealized gains (losses) arising during the period, Net of tax	2,136	(2,595)
Reclassification of net (gains) losses to net income, Before tax	(81)	68
Reclassification of net (gains) losses to net income, Tax effect	20	(17)
Reclassification of net (gains) losses to net income, Net of tax	(61)	51
Net change, Before tax	2,750	(3,375)
Net change, Tax effect	(675)	831
Net change, Net of tax	2,075	(2,544)
Cash Flow Hedges:
Reclassification of net losses to net income on cash flow hedges, Before Tax	79	60
Net change, Before tax	44	(182)
Net change, Tax effect	(10)	45
Net change, Net of tax	34	(137)
Defined benefit plans adjustments:
Net actuarial and prior service gains (losses) arising during the period, Before tax	(4)	6
Net actuarial and prior service gains (losses) arising during the period, Tax effect	1	(2)
Net actuarial and prior service gains (losses) arising during the period, Net of tax	(3)	4
Amortization of net actuarial loss, Before tax	35	32
Amortization of net actuarial loss, Tax effect	(8)	(8)
Amortization of net actuarial loss, Net of tax	27	24
Settlements and other, Before tax	0	0
Settlements and other, Tax effect	0	1
Settlements and other, Net of tax	0	1
Reclassification of amounts to non interest expense, Before tax	35	32
Reclassification of amounts to non interest expense, Tax effect	(8)	(7)
Reclassification of amounts to non interest expense, Net of tax	27	25
Net change, Before tax	31	38
Net change, Tax effect	(7)	(9)
Net change, Net of tax	24	29
Foreign currency translation adjustments:
Net unrealized gains (losses) arising during the period, Before tax	42	(2)
Net unrealized gains (losses) arising during the period, Tax effect	(2)	(5)
Net unrealized gains (losses) arising during the period, Net of tax	40	(7)
Net change, Before tax	42	(2)
Net change, Tax effect	(2)	(5)
Net change, Net of tax	40	(7)
Other comprehensive income (loss), before tax	2,867	(3,521)
Other comprehensive income (loss), tax effect	(694)	862
Other comprehensive income (loss), net of tax	2,173	(2,659)
Less: Other comprehensive income from noncontrolling interests	0	0
Wells Fargo other comprehensive income (loss), net of tax	2,173	(2,659)
Cash Flow Hedging [Member]
Cash Flow Hedges:
Net unrealized losses arising during the period on cash flow hedges, Before Tax	(9)	(266)
Net unrealized losses arising during the period on cash flow hedges, Tax	2	66
Net unrealized losses arising during the period on cash flow hedges, Net of Tax	(7)	(200)
Reclassification of net losses to net income on cash flow hedges, Before Tax	79	60
Reclassification of net losses to net income on cash flow hedges, Tax	(19)	(15)
Reclassification of net losses to net income on cash flow hedges, Net of Tax	60	45
Fair Value Hedging [Member]
Fair Value Hedges:
Change in fair value of excluded components on fair value hedges, Before Tax	(26)	24
Change in fair value of excluded components on fair value hedges, Tax	7	(6)
Change in fair value of excluded components on fair value hedges, Net of Tax	(19)	18
Interest expense on long-term debt [Member] | Cash Flow Hedging [Member]
Cash Flow Hedges:
Reclassification of net losses to net income on cash flow hedges, Before Tax	1	0
Reclassification of net losses to net income on cash flow hedges, Tax	0	0
Reclassification of net losses to net income on cash flow hedges, Net of Tax	1	0
Other noninterest income [Member]
Debt securities:
Reclassification of net (gains) losses to net income, Before tax	(1)	0
Reclassification of net (gains) losses to net income, Tax effect	0	0
Reclassification of net (gains) losses to net income, Net of tax	(1)	0
Debt securities [Member] | Interest income [Member]
Debt securities:
Reclassification of net (gains) losses to net income, Before tax	45	69
Reclassification of net (gains) losses to net income, Tax effect	(11)	(17)
Reclassification of net (gains) losses to net income, Net of tax	34	52
Debt securities [Member] | Net gains on debt securities [Member]
Debt securities:
Reclassification of net (gains) losses to net income, Before tax	(125)	(1)
Reclassification of net (gains) losses to net income, Tax effect	31	0
Reclassification of net (gains) losses to net income, Net of tax	(94)	(1)
Loans [Member] | Interest income [Member] | Cash Flow Hedging [Member]
Cash Flow Hedges:
Reclassification of net losses to net income on cash flow hedges, Before Tax	78	60
Reclassification of net losses to net income on cash flow hedges, Tax	(19)	(15)
Reclassification of net losses to net income on cash flow hedges, Net of Tax	$ 59	$ 45

Other Comprehensive Income, Cum

Other Comprehensive Income, Cumulative OCI Balances (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Cumulative OCI balances [Abstract]
Balance, beginning of period	$ 197,066	$ 208,079
Balance, beginning of period adjusted balance				$ 197,055	$ 208,055
Other comprehensive income (loss), net of tax	2,173	(2,659)
Less: Other comprehensive income (loss) from noncontrolling interests	0	0
Balance, end of period	198,733	205,910
Accounting Standards Update 2017-08 [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Transition Adjustment			$ (111)
Cumulative other comprehensive income [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(6,336)	(2,144)
Balance, beginning of period adjusted balance				(5,855)	(2,262)
Net unrealized gains (losses) arising during the period	2,147	(2,780)
Amounts reclassified from accumulated other comprehensive income	26	121
Other comprehensive income (loss), net of tax	2,173	(2,659)
Balance, end of period	(3,682)	(4,921)
Cumulative other comprehensive income [Member] | Accounting Standards Update 2017-08 [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Transition Adjustment				481
Cumulative other comprehensive income [Member] | Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Transition Adjustment					(118)
Debt securities, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(3,122)	171
Balance, beginning of period adjusted balance				(2,641)	53
Net unrealized gains (losses) arising during the period	2,136	(2,595)
Amounts reclassified from accumulated other comprehensive income	(61)	51
Other comprehensive income (loss), net of tax	2,075	(2,544)
Balance, end of period	(566)	(2,491)
Debt securities, parent [Member] | Accounting Standards Update 2017-08 [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Transition Adjustment				481
Debt securities, parent [Member] | Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Transition Adjustment					(118)
Derivative and hedging activities, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(685)	(418)
Balance, beginning of period adjusted balance				(685)	(418)
Net unrealized gains (losses) arising during the period	(26)	(182)
Amounts reclassified from accumulated other comprehensive income	60	45
Other comprehensive income (loss), net of tax	34	(137)
Balance, end of period	(651)	(555)
Defined benefit plans adjustments, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(2,296)	(1,808)
Balance, beginning of period adjusted balance				(2,296)	(1,808)
Net unrealized gains (losses) arising during the period	(3)	4
Amounts reclassified from accumulated other comprehensive income	27	25
Other comprehensive income (loss), net of tax	24	29
Balance, end of period	(2,272)	(1,779)
Foreign currency translation adjustments, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(233)	(89)
Balance, beginning of period adjusted balance				(233)	(89)
Net unrealized gains (losses) arising during the period	40	(7)
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss), net of tax	40	(7)
Balance, end of period	(193)	(96)
Noncontrolling Interest [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	900	1,143
Balance, beginning of period adjusted balance				$ 900	$ 1,143
Less: Other comprehensive income (loss) from noncontrolling interests	0	0
Balance, end of period	901	958
AOCI Attributable to Noncontrolling Interest [Member]
Cumulative OCI balances [Abstract]
Less: Other comprehensive income (loss) from noncontrolling interests	0	0
Debt securities, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Less: Other comprehensive income (loss) from noncontrolling interests	0	0
Derivative and hedging activities, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Less: Other comprehensive income (loss) from noncontrolling interests	0	0
Defined benefit plans adjustments, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Less: Other comprehensive income (loss) from noncontrolling interests	0	0
Foreign currency translation adjustments, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Less: Other comprehensive income (loss) from noncontrolling interests	$ 0	$ 0

Operating Segments (Details)

Operating Segments (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)segment	Mar. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments | segment	3
Financial Information of Operating Segment [Abstract]
Net interest income	$ 12,311	$ 12,238
Provision (reversal of provision) for credit losses	845	191
Noninterest income	9,298	9,696
Noninterest expense	13,916	15,042
Income before income tax expense	6,848	6,701
Income tax expense (benefit)	881	1,374
Net income before noncontrolling interests	5,967	5,327
Less: Net income from noncontrolling interests	107	191
Wells Fargo net income	5,860	5,136
Average loans	950,000	951,000
Average assets	1,883,100	1,915,900
Average Deposits	1,262,100	1,297,200
Other [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	(572)	(601)
Provision (reversal of provision) for credit losses	(3)	(1)
Noninterest income	(759)	(816)
Noninterest expense	(914)	(928)
Income before income tax expense	(414)	(488)
Income tax expense (benefit)	(104)	(122)
Net income before noncontrolling interests	(310)	(366)
Less: Net income from noncontrolling interests	0	0
Wells Fargo net income	(310)	(366)
Average loans	(59,000)	(58,500)
Average assets	(60,000)	(59,400)
Average Deposits	(66,500)	(74,200)
Community Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	7,248	7,195
Provision (reversal of provision) for credit losses	710	218
Noninterest income	4,502	4,635
Noninterest expense	7,689	8,702
Income before income tax expense	3,351	2,910
Income tax expense (benefit)	424	809
Net income before noncontrolling interests	2,927	2,101
Less: Net income from noncontrolling interests	104	188
Wells Fargo net income	2,823	1,913
Average loans	458,200	470,500
Average assets	1,015,400	1,061,900
Average Deposits	765,600	747,500
Wholesale Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	4,534	4,532
Provision (reversal of provision) for credit losses	134	(20)
Noninterest income	2,577	2,747
Noninterest expense	3,838	3,978
Income before income tax expense	3,139	3,321
Income tax expense (benefit)	369	448
Net income before noncontrolling interests	2,770	2,873
Less: Net income from noncontrolling interests	0	(2)
Wells Fargo net income	2,770	2,875
Average loans	476,400	465,100
Average assets	844,500	829,200
Average Deposits	409,800	446,000
Wealth and Investment Management [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	1,101	1,112
Provision (reversal of provision) for credit losses	4	(6)
Noninterest income	2,978	3,130
Noninterest expense	3,303	3,290
Income before income tax expense	772	958
Income tax expense (benefit)	192	239
Net income before noncontrolling interests	580	719
Less: Net income from noncontrolling interests	3	5
Wells Fargo net income	577	714
Average loans	74,400	73,900
Average assets	83,200	84,200
Average Deposits	$ 153,200	$ 177,900

Regulatory and Agency Capital_3

Regulatory and Agency Capital Requirements (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Parent Company [Member]
Supplementary leverage:
Total Leverage Exposure	$ 2,180,614	$ 2,174,564
Supplementary Leverage Ratio	7.78%	7.72%
Parent Company [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 148,124	$ 146,363
Tier 1	169,611	167,866
Total	199,851	198,798
Assets:
Risk-weighted assets	1,176,360	1,177,350
Adjusted average	$ 1,854,367	$ 1,850,299
Regulatory capital ratios:
Common equity tier 1 capital	12.59%	12.43%
Tier 1 capital	14.42%	14.26%
Total capital	16.99%	16.89%
Tier 1 leverage	9.15%	9.07%
Parent Company [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 148,124	$ 146,363
Tier 1	169,611	167,866
Total	208,042	207,041
Assets:
Risk-weighted assets	1,243,125	1,247,210
Adjusted average	$ 1,854,367	$ 1,850,299
Regulatory capital ratios:
Common equity tier 1 capital	11.92%	11.74%
Tier 1 capital	13.64%	13.46%
Total capital	16.74%	16.60%
Tier 1 leverage	9.15%	9.07%
Wells Fargo Bank, NA [Member]
Supplementary leverage:
Total Leverage Exposure	$ 1,951,217	$ 1,957,276
Supplementary Leverage Ratio	7.44%	7.29%
Wells Fargo Bank, NA [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 145,091	$ 142,685
Tier 1	145,091	142,685
Total	158,074	155,558
Assets:
Risk-weighted assets	1,056,290	1,058,653
Adjusted average	$ 1,647,785	$ 1,652,009
Regulatory capital ratios:
Common equity tier 1 capital	13.74%	13.48%
Tier 1 capital	13.74%	13.48%
Total capital	14.97%	14.69%
Tier 1 leverage	8.81%	8.64%
Wells Fargo Bank, NA [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common equity tier 1	$ 145,091	$ 142,685
Tier 1	145,091	142,685
Total	165,836	163,380
Assets:
Risk-weighted assets	1,143,763	1,154,182
Adjusted average	$ 1,647,785	$ 1,652,009
Regulatory capital ratios:
Common equity tier 1 capital	12.69%	12.36%
Tier 1 capital	12.69%	12.36%
Total capital	14.50%	14.16%
Tier 1 leverage	8.81%	8.64%

Regulatory and Agency Capital_4

Regulatory and Agency Capital Requirements Minimum Required Regulatory Capital Ratios – Transition Requirements (Details)	Mar. 31, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital Conservation Buffer	2.50%
GSIB Surcharge	2.00%
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	9.00%	7.875%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	10.50%	9.375%
Capital Required for Capital Adequacy to Risk Weighted Assets	12.50%	11.375%
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Enhanced Supplementary Leverage Capital Required Ratio	5.00%	5.00%
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	7.00%	6.375%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.50%	7.875%
Capital Required for Capital Adequacy to Risk Weighted Assets	10.50%	9.875%
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Enhanced Supplementary Leverage Capital Required Ratio	6.00%	6.00%