Capital One Financial (COF) 10-Q 1 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	COF
Entity Registrant Name	CAPITAL ONE FINANCIAL CORP
Entity Central Index Key	927,628
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		484,744,182

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income:
Loans, including loans held for sale	$ 5,960	$ 5,383	$ 17,255	$ 15,616
Investment securities	431	386	1,280	1,206
Other	29	25	83	60
Total interest income	6,420	5,794	18,618	16,882
Interest expense:
Deposits	410	306	1,145	881
Securitized debt obligations	85	56	236	151
Senior and subordinated notes	194	121	522	338
Other borrowings	31	34	68	86
Total interest expense	720	517	1,971	1,456
Net interest income	5,700	5,277	16,647	15,426
Provision for loan, lease and other losses	1,833	1,588	5,625	4,707
Net interest income after provision for credit losses	3,867	3,689	11,022	10,719
Non-interest income:
Service charges and other customer-related fees	414	417	1,203	1,233
Interchange fees, net	662	603	1,908	1,828
Gain (Loss) on Sale of Securities, Net	68	1	64	(7)
Other	141	163	402	455
Total non-interest income	1,285	1,184	3,577	3,509
Non-interest expense:
Salaries and associate benefits	1,524	1,317	4,378	3,866
Occupancy and equipment	471	499	1,416	1,422
Marketing	379	393	1,210	1,236
Professional services	297	257	823	762
Communications and data processing	294	291	871	873
Amortization of intangibles	61	89	184	285
Other	541	515	1,533	1,435
Total non-interest expense	3,567	3,361	10,415	9,879
Income from continuing operations before income taxes	1,585	1,512	4,184	4,349
Income tax provision	448	496	1,205	1,372
Income from continuing operations, net of tax	1,137	1,016	2,979	2,977
Income (loss) from discontinued operations, net of tax	(30)	(11)	(26)	(17)
Net income	1,107	1,005	2,953	2,960
Dividends and undistributed earnings allocated to participating securities	(8)	(6)	(21)	(18)
Preferred stock dividends	(52)	(37)	(185)	(139)
Net income available to common stockholders	$ 1,047	$ 962	$ 2,747	$ 2,803
Basic earnings per common share:
Net income from continuing operations (in dollars per share)	$ 2.22	$ 1.94	$ 5.73	$ 5.50
Income (loss) from discontinued operations (in dollars per share)	(0.06)	(0.02)	(0.05)	(0.03)
Net income per basic common share (in dollars per share)	2.16	1.92	5.68	5.47
Diluted earnings per common share:
Net income from continuing operations (in dollars per share)	2.20	1.92	5.68	5.45
Income (loss) from discontinued operations (in dollars per share)	(0.06)	(0.02)	(0.05)	(0.03)
Net income per diluted common share (in dollars per share)	2.14	1.90	5.63	5.42
Dividends paid per common share (in dollars per share)	$ 0.4	$ 0.40	$ 1.2	$ 1.20

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 1,107	$ 1,005	$ 2,953	$ 2,960
After Tax
Net unrealized gains (losses) on securities available for sale	10	10	195	333
Net changes in securities held to maturity	26	28	72	74
Net unrealized gains (losses) on cash flow hedges	(17)	(142)	(38)	378
Foreign currency translation adjustments	38	(20)	86	(49)
Other	4	4	12	1
Other comprehensive income (loss), net of tax	61	(120)	327	737
Comprehensive income	$ 1,168	$ 885	$ 3,280	$ 3,697

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Cash and cash equivalents:
Cash and due from banks	$ 4,154	$ 4,185
Interest-bearing deposits and other short-term investments	4,330	5,791
Total cash and cash equivalents	8,484	9,976
Restricted cash for securitization investors	304	2,517
Securities available for sale, at fair value	39,742	40,737
Securities held to maturity, at carrying value	28,650	25,712
Loans held for investment:
Total loans held for investment	252,422	245,586
Allowance for loan and lease losses	(7,418)	(6,503)
Net loans held for investment	245,004	239,083
Loans held for sale, at lower of cost or fair value	1,566	1,043
Premises and equipment, net	3,955	3,675
Interest receivable	1,426	1,351
Goodwill	14,532	14,519
Other assets	17,739	18,420
Total assets	361,402	357,033
Liabilities:
Interest payable	301	327
Deposits:
Non-interest-bearing deposits	26,106	25,502
Interest-bearing deposits	212,956	211,266
Total deposits	239,062	236,768
Securitized debt obligations	17,087	18,826
Other debt:
Federal funds purchased and securities loaned or sold under agreements to repurchase	767	992
Senior and subordinated notes	28,420	23,431
Other borrowings	13,184	17,211
Total other debt	42,371	41,634
Other liabilities	12,427	11,964
Total liabilities	311,248	309,519
Stockholders’ equity:
Preferred stock (par value $.01 per share; 50,000,000 shares authorized; 4,475,000 shares issued and outstanding as of both September 30, 2017 and December 31, 2016)	0	0
Common stock (par value $.01 per share; 1,000,000,000 shares authorized; 660,583,843 and 653,736,607 shares issued as of September 30, 2017 and December 31, 2016, respectively, 484,419,510 and 480,218,547 shares outstanding as of September 30, 2017 and December 31, 2016, respectively)	7	7
Additional paid-in capital, net	31,526	31,157
Retained earnings	31,946	29,766
Accumulated other comprehensive loss	(622)	(949)
Treasury stock, at cost (par value $.01 per share; 176,164,333 and 173,518,060 shares as of September 30, 2017 and December 31, 2016, respectively)	(12,703)	(12,467)
Total stockholders’ equity	50,154	47,514
Total liabilities and stockholders’ equity	361,402	357,033
Unsecuritized loans held for investment
Loans held for investment:
Total loans held for investment	217,659	213,824
Loans held in consolidated trusts
Loans held for investment:
Total loans held for investment	$ 34,763	$ 31,762

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	4,475,000	4,475,000
Preferred stock, shares outstanding	4,475,000	4,475,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	660,583,843	653,736,607
Common stock, shares outstanding	484,419,510	480,218,547
Treasury stock, common, shares	176,164,333	173,518,060

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2017 - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2016	$ 47,514	$ 0	$ 7	$ 31,157	$ 29,766	$ (949)	$ (12,467)
Beginning balance (shares) at Dec. 31, 2016		4,475,000	653,736,607
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	3,280				2,953	327
Common Stock Dividends, Shares			37,777
Dividends, Common Stock	(585)		$ 0		(588)
Dividends, Share-based Compensation, Stock				3
Cash dividends - preferred series	(185)				(185)
Purchases of treasury stock	(236)						(236)
Issuances of common stock and restricted stock, shares, net of forfeitures			3,466,690
Issuances of common stock and restricted stock, value, net of forfeitures	124		$ 0	124
Exercise of stock options and warrants, tax effects of exercises and restricted stock vesting, shares			3,342,769
Exercise of stock options and warrants, tax effects of exercises and restricted stock vesting, value	102		$ 0	102
Compensation expense for restricted stock awards, restricted stock units and stock options	140			140
Ending balance at Sep. 30, 2017	$ 50,154	$ 0	$ 7	$ 31,526	$ 31,946	$ (622)	$ (12,703)
Ending balance (shares) at Sep. 30, 2017		4,475,000	660,583,843

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities:
Income from continuing operations, net of tax	$ 2,979	$ 2,977
Income (loss) from discontinued operations, net of tax	(26)	(17)
Net income	2,953	2,960
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan, lease and other losses	5,625	4,707
Depreciation and amortization, net	1,719	1,819
Deferred tax benefit	(321)	(621)
Net (gains) losses on sales of securities available for sale	(69)	(3)
Impairment losses on securities available for sale	5	10
Gain on sales of loans held for sale	(42)	(77)
Stock plan compensation expense	164	150
Other	(4)	(10)
Loans held for sale:
Originations and purchases	(6,776)	(6,122)
Proceeds from sales and paydowns	6,387	5,888
Changes in operating assets and liabilities:
Changes in interest receivable	(47)	(63)
Changes in other assets	781	93
Changes in interest payable	(27)	(62)
Changes in other liabilities	(198)	1,166
Net change from discontinued operations	(59)	26
Net cash from operating activities	10,091	9,861
Securities available for sale:
Purchases	(9,565)	(11,349)
Proceeds from paydowns and maturities	5,493	5,773
Proceeds from sales	5,793	3,528
Securities held to maturity:
Purchases	(4,731)	(2,281)
Proceeds from paydowns and maturities	1,894	1,874
Loans:
Net changes in loans held for investment	(7,690)	(13,068)
Principal recoveries of loans previously charged off	1,469	1,123
Purchases of premises and equipment	(776)	(508)
Payments to Acquire Businesses, Net of Cash Acquired	(3,220)	11
Net cash from other investing activities	(412)	(280)
Net cash from investing activities	(11,745)	(15,177)
Financing activities:
Changes in deposits	2,268	8,249
Proceeds from Issuance of Secured Debt	2,991	4,987
Maturities and paydowns of securitized debt obligations	(7,233)	(2,790)
Issuance of senior and subordinated notes and long-term FHLB advances	27,784	20,380
Maturities and paydowns of senior and subordinated notes and long-term FHLB advances	(26,871)	(22,401)
Changes in other borrowings	(210)	97
Common stock:
Net proceeds from issuances	124	99
Dividends paid	(585)	(618)
Preferred stock:
Proceeds from Issuance of Preferred Stock	0	583
Dividends paid	(185)	(139)
Purchases of treasury stock	(236)	(2,793)
Proceeds from share-based payment activities	102	3
Net cash from financing activities	(2,051)	5,657
Changes in cash, cash equivalents and restricted cash for securitization investors	(3,705)	341
Cash, cash equivalents and restricted cash for securitization investors, beginning of the period	12,493	9,040
Cash, cash equivalents and restricted cash for securitization investors, ending of the period	8,788	9,381
Non-cash item:
Net transfers from loans held for investment to loans held for sale	449	397
Securitized debt obligations assumed in acquisition	2,484	0
Interest paid	2,080	1,518
Income tax paid	$ 779	$ 1,551

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The Company Capital One Financial Corporation, a Delaware Corporation established in 1994 and headquartered in McLean, Virginia, is a diversified financial services holding company with banking and non-banking subsidiaries. Capital One Financial Corporation and its subsidiaries (the “Company”) offer a broad array of financial products and services to consumers, small businesses and commercial clients through branches, the internet and other distribution channels. As of September 30, 2017 , our principal subsidiaries included: • Capital One Bank (USA), National Association (“COBNA”), which offers credit and debit card products, other lending products and deposit products; and • Capital One, National Association (“CONA”), which offers a broad spectrum of banking products and financial services to consumers, small businesses and commercial clients. The Company is hereafter collectively referred to as “we,” “us” or “our.” COBNA and CONA are collectively referred to as the “Banks.” We also offer products outside of the United States of America (“U.S.”) principally through Capital One (Europe) plc (“COEP”), an indirect subsidiary of COBNA organized and located in the United Kingdom (“U.K.”), and through a branch of COBNA in Canada. COEP has authority, among other things, to provide credit card loans. Our branch of COBNA in Canada also has the authority to provide credit card loans. Our principal operations are currently organized for management reporting purposes into three major business segments, which are defined based on the products and services provided or the type of customer served: Credit Card, Consumer Banking and Commercial Banking. We provide details on our business segments, the integration of recent acquisitions, if any, into our business segments and the allocation methodologies and accounting policies used to derive our business segment results in “ Note 13—Business Segments .” On September 25, 2017, we completed the acquisition from Synovus Bank of credit card assets and related liabilities of World’s Foremost Bank, a wholly-owned subsidiary of Cabela’s Incorporated (“Cabela’s acquisition”) for a total purchase price of $3.2 billion net of cash and restricted cash acquired. The Cabela’s acquisition was accounted for as a business combination under the acquisition method of accounting, which requires, among other things, that we allocate the purchase price to the assets acquired and liabilities assumed based on our best estimates of fair value as of the acquisition date. As of the acquisition date, we recorded $6.0 billion of assets, which primarily consisted of $5.7 billion of credit card receivables, and assumed $2.6 billion of liabilities, of which $2.5 billion were securitized debt obligations. We expect to finalize the accounting for assets acquired and liabilities assumed in the Cabela’s acquisition by December 31, 2017. Results of the Cabela’s acquisition are included within our Credit Card segment. Basis of Presentation and Use of Estimates The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the U.S. (“U.S. GAAP”). The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and in the related disclosures. These estimates are based on information available as of the date of the consolidated financial statements. While management makes its best judgment, actual amounts or results could differ from these estimates. In the opinion of management, all normal, recurring adjustments have been included for a fair statement of this interim financial information. Certain prior period amounts have been reclassified to conform to the current period presentation. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements, and related notes thereto, included in Capital One Financial Corporation’s 2016 Form 10-K. Principles of Consolidation The unaudited consolidated financial statements include the accounts of Capital One Financial Corporation and all other entities in which we have a controlling financial interest. We determine whether we have a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity (“VIE”). All significant intercompany account balances and transactions have been eliminated. Loans Charge-Offs In the second quarter of 2017, we implemented changes in accounting estimates impacting our charge-off practices for the treatment of certain loans within our consumer banking loan portfolio . This includes changes to the charge-off timing of auto and home loans where the borrower has filed for bankruptcy and the loans have not been reaffirmed, which are now charged off in the period that the loan is 60 days from the bankruptcy notification date. Newly Adopted Accounting Standards Restricted Cash In November 2016 , the Financial Accounting Standards Board (“FASB”) issued revised guidance that requires restricted cash and restricted cash equivalents to be included within beginning and ending total cash amounts reported in the consolidated statements of cash flows. Disclosure of the nature of the restrictions on cash balances is required under the guidance. We have elected to early adopt the guidance retrospectively effective as of January 1, 2017. Upon adoption, changes in restricted cash, which had previously been presented as financing activities, are now included within beginning and ending Cash, cash equivalents and restricted cash for securitization investors balances. The Cash, cash equivalents and restricted cash for securitization investors balances presented in the consolidated statements of cash flows are comprised of the amounts captioned on the consolidated balance sheets as Total cash and cash equivalents and Restricted cash for securitization investors. Improvements to Employee Share-Based Accounting In March 2016, the FASB issued revised guidance for accounting for employee share-based payments. The guidance requires that all excess tax benefits and tax deficiencies that pertain to employee stock-based incentive payments be recognized as income tax expense or benefit in the consolidated statements of income, rather than within additional paid-in capital; and that excess tax benefits be classified as an operating activity rather than financing activity in the consolidated statements of cash flows. The guidance also permits an accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. We adopted the guidance effective in the first quarter of 2017 on a prospective basis related to recognition of excess tax benefits and deficiencies in the consolidated statements of income and presentation of excess tax benefits in the consolidated statements of cash flows. In addition, we made an accounting policy election to account for forfeitures of awards as they occur and applied a modified retrospective transition method. Our adoption of this guidance did not have a material impact to our consolidated financial statements. Recently Issued but Not Yet Adopted Accounting Standards Targeted Improvements to Accounting for Hedging Activities In August 2017, the FASB issued new hedge accounting guidance to amend the existing hedge accounting recognition and presentation requirements . The amendments better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of the impacts of those hedging relationships. The guidance is effective for us on January 1, 2019, with early adoption permitted. We are currently assessing the potential impacts of this guidance to our existing risk management practices as well as the overall effects on our consolidated financial statements and related disclosures. We are currently evaluating the overall impact of adopting this standard earlier than required. Premium Amortization on Purchased Callable Debt Securities In March 2017, the FASB issued revised guidance to shorten the amortization period to the earliest call date for certain purchased callable debt securities held at a premium. There is no change for accounting for securities held at a discount. Under the existing guidance, the premium is generally amortized as an adjustment to interest income over the contractual life of the debt security. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. This guidance is effective for us on January 1, 2019, with early adoption permitted, using the modified retrospective method of adoption. We plan to adopt the standard on its effective date. Simplifying the Test for Goodwill Impairment In January 2017, the FASB issued revised guidance which is intended to reduce the cost and complexity of testing goodwill for impairment by eliminating the second step from the current goodwill impairment test. Under the existing guidance, the first step compares a reporting unit’s carrying value to its fair value. If the carrying value exceeds fair value, an entity performs the second step, which assigns the reporting unit’s fair value to its assets and liabilities, including unrecognized assets and liabilities, in the same manner as required in purchase accounting. Under the new guidance, any impairment of a reporting unit’s goodwill is determined based on the amount by which the reporting unit’s carrying value exceeds its fair value, limited to the amount of goodwill allocated to the reporting unit. This guidance is effective for us on January 1, 2020, with early adoption permitted, using the prospective method of adoption. We plan to adopt the standard on its effective date. Measurement of Credit Losses on Financial Instruments In June 2016, the FASB issued revised guidance for impairments on financial instruments. The guidance requires an impairment model (known as the current expected credit loss (“CECL”) model) that is based on expected rather than incurred losses, with an anticipated result of more timely loss recognition. The CECL model is applicable to financial assets measured at amortized cost, net investments in leases that are not accounted for at fair value through net income and certain off-balance sheet arrangements. The CECL model will replace our current accounting for purchased credit-impaired (“PCI”) and impaired loans. The guidance also amends the available for sale (“AFS”) debt securities other-than-temporary impairment (“OTTI”) model. Credit losses (and subsequent recoveries) on AFS debt securities will be recorded through an allowance approach, rather than the current U.S. GAAP practice of permanent write-downs for credit losses and accreting positive changes through interest income over time. This guidance is effective for us on January 1, 2020, with early adoption permitted no earlier than January 1, 2019, using the modified retrospective method of adoption. We plan to adopt the standard on its effective date. We have established a company-wide, cross-functional governance structure for our implementation of this standard. We are in the process of determining key accounting interpretations, data requirements and necessary changes to our credit loss estimation methods, processes and systems. We continue to assess the potential impact on our consolidated financial statements and related disclosures. Due to the significant differences in the revised guidance from existing U.S. GAAP, the implementation of this guidance may result in material changes in our accounting for credit losses on financial instruments. Leases In February 2016, the FASB issued revised guidance for leases. The guidance requires lessees to recognize right of use assets and lease liabilities on their consolidated balance sheets and disclose key information about all their leasing arrangements, with certain practical expedients. This guidance is effective for us on January 1, 2019, with early adoption permitted, using the modified retrospective method of adoption. We plan to adopt the standard on the effective date. We are currently in the process of reviewing lease contracts, establishing new processes and internal controls, evaluating the impact of various accounting policy elections and the potential impact on our consolidated financial statements. We expect our total assets and liabilities to increase. Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, the FASB issued revised guidance for the recognition, measurement, presentation, and disclosure of financial instruments. The main provisions of the guidance include, (i) the measurement of most equity investments at fair value with changes in fair value recorded through net income, except those accounted for under the equity method of accounting, or those that do not have a readily determinable fair value (for which a practical expedient can be elected); (ii) the required use of the exit price notion when valuing financial instruments for disclosure purposes; (iii) the separate presentation in other comprehensive income of the instrument-specific credit risk portion of the total change in the fair value of a liability under the fair value option; (iv) the determination of the need for a valuation allowance on a deferred tax asset related to AFS securities must be made in combination with other deferred tax assets. The guidance eliminates the current classifications of equity securities as trading or AFS and will require separate presentation of financial assets and liabilities by category and form of the financial assets on the face of the consolidated balance sheets or within the accompanying notes. The guidance also eliminates the requirement to disclose the methods and significant assumptions used to estimate fair value of financial instruments measured at amortized cost on the balance sheet. This guidance is effective for us on January 1, 2018. Early adoption is only permitted for the requirement to present the portion of the total change in fair value attributable to a change in the instrument-specific credit risk in other comprehensive income. We plan to adopt the standard on its effective date, and do not expect such adoption to have a material impact on our consolidated financial statements. Revenue from Contracts with Customers In May 2014, the FASB issued revised guidance for the recognition, measurement and disclosure of revenue from contracts with customers. The original guidance has been amended through subsequent accounting standard updates that resulted in technical corrections, improvements, and a one-year deferral of the effective date to January 1, 2018. The guidance, as amended, is applicable to all entities and, once effective, will replace significant portions of existing industry and transaction-specific revenue recognition rules with a more principles-based recognition model. Entities can elect to apply either a full or modified retrospective method of adoption. Most revenue associated with financial instruments, including interest income, loan origination fees and credit card fees, is outside the scope of the guidance. Gains and losses on investment securities, derivatives and sales of financial instruments are similarly excluded from the scope. Our implementation efforts have included identifying revenues and related costs within the scope of this guidance, reviewing the associated contracts and evaluating the related accounting policies and internal controls to determine if any changes will be required. We have substantially completed the evaluation of the potential impact of this guidance on the timing, recognition, and presentation of revenues and expenses and have not identified any material changes. We continue to evaluate and prepare for the new disclosures required by this guidance. We plan to adopt the standard on its effective date, using the modified retrospective method of adoption.

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	NOTE 2—DISCONTINUED OPERATIONS Our discontinued operations consist of the mortgage origination operations of our wholesale mortgage banking unit, GreenPoint Mortgage Funding, Inc. (“GreenPoint”) and the manufactured housing operations of GreenPoint Credit, LLC, a subsidiary of GreenPoint, both of which were acquired as part of the North Fork Bancorporation, Inc. (“North Fork”) acquisition in December 2006. Although the manufactured housing operations were sold to a third party in 2004 prior to our acquisition of North Fork, we acquired certain retained interests and obligations related to those operations as part of the acquisition. Separately, in the third quarter of 2007 we closed the mortgage origination operations of the wholesale mortgage banking unit. The results of both the wholesale banking unit and the manufactured housing operations have been accounted for as discontinued operations and are reported as income or loss from discontinued operations, net of tax, on the consolidated statements of income. As of September 30, 2017, we had no significant continuing involvement in these operations. The following table summarizes the results from discontinued operations for the three and nine months ended September 30, 2017 and 2016 : Table 2.1 : Results of Discontinued Operations Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Income (loss) from discontinued operations before income taxes $ (47 ) $ (17 ) $ (40 ) $ (27 ) Income tax provision (benefit) (17 ) (6 ) (14 ) (10 ) Income (loss) from discontinued operations, net of tax $ (30 ) $ (11 ) $ (26 ) $ (17 ) The discontinued mortgage origination operations of our wholesale mortgage banking unit have remaining assets primarily consisting of a deferred tax asset related to the reserve for representations and warranties on loans previously sold to third parties. As of September 30, 2017, we had contingent obligations to exercise mandatory clean-up calls associated with certain securitization transactions undertaken by the discontinued GreenPoint Credit, LLC manufactured housing operations in the event the third-party servicer could not fulfill its obligation to exercise these clean-up calls. On October 10, 2017, we entered into an agreement with the third-party servicer under which we assumed the mandatory obligation to exercise the remaining clean-up calls as they become due on certain securitization transactions. See “ Note 6—Variable Interest Entities and Securitizations ” and “ Note 14—Commitments, Contingencies, Guarantees and Others ” for information on the reserve related to our retained interests and obligations associated with GreenPoint Credit, LLC manufactured housing operations and the reserves we have established for our mortgage representation and warranty exposure.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	NOTE 3—INVESTMENT SECURITIES Our investment portfolio consists primarily of the following: U.S. Treasury securities; U.S. government-sponsored enterprise or agency (“Agency”) and non-agency residential mortgage-backed securities (“RMBS”); Agency and non-agency commercial mortgage-backed securities (“CMBS”); other asset-backed securities (“ABS”); and other securities. The carrying value of our investments in U.S. Treasury and Agency securities represented 92% and 91% of our total investment securities as of September 30, 2017 and December 31, 2016 , respectively. The table below presents the overview of our investment securities portfolio as of September 30, 2017 and December 31, 2016 . Table 3.1 : Overview of Investment Securities Portfolio (Dollars in millions) September 30, 2017 December 31, 2016 Securities available for sale, at fair value $ 39,742 $ 40,737 Securities held to maturity, at carrying value 28,650 25,712 Total investment securities $ 68,392 $ 66,449 The table below presents the amortized cost, gross unrealized gains and losses, and fair value of securities available for sale as of September 30, 2017 and December 31, 2016 . Table 3.2 : Investment Securities Available for Sale September 30, 2017 (Dollars in millions) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses (1) Fair Value Investment securities available for sale: U.S. Treasury securities $ 5,110 $ 29 $ 0 $ 5,139 RMBS: Agency (2) 26,186 109 (256 ) 26,039 Non-agency 1,797 402 0 2,199 Total RMBS 27,983 511 (256 ) 28,238 CMBS: Agency (2) 3,033 16 (28 ) 3,021 Non-agency 1,783 27 (2 ) 1,808 Total CMBS 4,816 43 (30 ) 4,829 Other ABS (3) 546 1 0 547 Other securities (4) 984 6 (1 ) 989 Total investment securities available for sale $ 39,439 $ 590 $ (287 ) $ 39,742 December 31, 2016 (Dollars in millions) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses (1) Fair Value Investment securities available for sale: U.S. Treasury securities $ 5,103 $ 11 $ (49 ) $ 5,065 RMBS: Agency (2) 26,830 109 (412 ) 26,527 Non-agency 2,349 382 (9 ) 2,722 Total RMBS 29,179 491 (421 ) 29,249 CMBS: Agency (2) 3,335 14 (45 ) 3,304 Non-agency 1,676 21 (13 ) 1,684 Total CMBS 5,011 35 (58 ) 4,988 Other ABS (3) 714 1 (1 ) 714 Other securities (4) 726 1 (6 ) 721 Total investment securities available for sale $ 40,733 $ 539 $ (535 ) $ 40,737 __________ (1) Includes non-credit-related OTTI that is recorded in accumulated other comprehensive income (“AOCI”) of $1 million and $9 million as of September 30, 2017 and December 31, 2016 , respectively. Substantially all of this amount is related to non-agency RMBS. (2) Includes Government National Mortgage Association (“Ginnie Mae”) guaranteed securities, Federal National Mortgage Association (“Fannie Mae”) and Federal Home Loan Mortgage Corporation (“Freddie Mac”) issued securities. (3) ABS collateralized by credit card loans constituted approximately 56% and 57% of the other ABS portfolio as of September 30, 2017 and December 31, 2016 , respectively, and ABS collateralized by auto dealer floor plan inventory loans and leases constituted approximately 23% of the other ABS portfolio as of both September 30, 2017 and December 31, 2016 . (4) Includes supranational bonds, foreign government bonds, mutual funds and equity investments. The table below presents the amortized cost, carrying value, gross unrealized gains and losses, and fair value of securities held to maturity as of September 30, 2017 and December 31, 2016 . Table 3.3 : Investment Securities Held to Maturity September 30, 2017 (Dollars in millions) Amortized Cost Unrealized Losses Recorded in AOCI (1) Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 199 $ 0 $ 199 $ 0 $ 0 $ 199 Agency RMBS 25,590 (795 ) 24,795 704 (102 ) 25,397 Agency CMBS 3,737 (81 ) 3,656 97 (22 ) 3,731 Total investment securities held to maturity $ 29,526 $ (876 ) $ 28,650 $ 801 $ (124 ) $ 29,327 December 31, 2016 (Dollars in millions) Amortized Cost Unrealized Losses Recorded in AOCI (1) Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 199 $ 0 $ 199 $ 0 $ 0 $ 199 Agency RMBS 23,022 (897 ) 22,125 606 (158 ) 22,573 Agency CMBS 3,480 (92 ) 3,388 77 (41 ) 3,424 Total investment securities held to maturity $ 26,701 $ (989 ) $ 25,712 $ 683 $ (199 ) $ 26,196 __________ (1) Certain investment securities were transferred from the available for sale category to the held to maturity category in 2013. This amount represents the unrealized holding gain or loss at the date of transfer, net of any subsequent accretion. Any bonds purchased into the securities held to maturity portfolio rather than transferred, will not have unrealized losses recognized in AOCI. Investment Securities in a Gross Unrealized Loss Position The table below provides, by major security type, information about our securities available for sale in a gross unrealized loss position and the length of time that individual securities have been in a continuous unrealized loss position as of September 30, 2017 and December 31, 2016 . Table 3.4 : Securities in a Gross Unrealized Loss Position September 30, 2017 Less than 12 Months 12 Months or Longer Total (Dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Investment securities available for sale: U.S. Treasury securities $ 1 $ 0 $ 0 $ 0 $ 1 $ 0 RMBS: Agency 9,699 (85 ) 8,237 (171 ) 17,936 (256 ) Non-agency 9 0 11 0 20 0 Total RMBS 9,708 (85 ) 8,248 (171 ) 17,956 (256 ) CMBS: Agency 828 (8 ) 818 (20 ) 1,646 (28 ) Non-agency 177 0 152 (2 ) 329 (2 ) Total CMBS 1,005 (8 ) 970 (22 ) 1,975 (30 ) Other ABS 116 0 52 0 168 0 Other securities 364 (1 ) 0 0 364 (1 ) Total investment securities available for sale in a gross unrealized loss position $ 11,194 $ (94 ) $ 9,270 $ (193 ) $ 20,464 $ (287 ) December 31, 2016 Less than 12 Months 12 Months or Longer Total (Dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Investment securities available for sale: U.S. Treasury securities $ 1,060 $ (49 ) $ 0 $ 0 $ 1,060 $ (49 ) RMBS: Agency 16,899 (329 ) 4,865 (83 ) 21,764 (412 ) Non-agency 128 (2 ) 145 (7 ) 273 (9 ) Total RMBS 17,027 (331 ) 5,010 (90 ) 22,037 (421 ) CMBS: Agency 1,624 (21 ) 745 (24 ) 2,369 (45 ) Non-agency 826 (11 ) 129 (2 ) 955 (13 ) Total CMBS 2,450 (32 ) 874 (26 ) 3,324 (58 ) Other ABS 187 (1 ) 21 0 208 (1 ) Other securities 417 (6 ) 0 0 417 (6 ) Total investment securities available for sale in a gross unrealized loss position $ 21,141 $ (419 ) $ 5,905 $ (116 ) $ 27,046 $ (535 ) As of September 30, 2017 , the amortized cost of approximately 680 securities available for sale exceeded their fair value by $287 million , of which $193 million related to securities that had been in a loss position for 12 months or longer. As of September 30, 2017 , our investments in non-agency RMBS and CMBS, other ABS and other securities accounted for $3 million , or 1% , of total gross unrealized losses on securities available for sale. As of September 30, 2017 , the carrying value of approximately 160 securities classified as held to maturity exceeded their fair value by $124 million . The unrealized losses related to investment securities for which we have not recognized credit impairment were primarily attributable to changes in market interest rates. As discussed in more detail below, we conduct periodic reviews of all investment securities with unrealized losses to assess whether impairment is other-than-temporary. Maturities and Yields of Investment Securities The following tables summarize the remaining scheduled contractual maturities, assuming no prepayments, of our investment securities as of September 30, 2017 . Table 3.5 : Contractual Maturities of Securities Available for Sale September 30, 2017 (Dollars in millions) Amortized Cost Fair Value Due in 1 year or less $ 730 $ 731 Due after 1 year through 5 years 2,983 3,013 Due after 5 years through 10 years 6,650 6,694 Due after 10 years (1) 29,076 29,304 Total $ 39,439 $ 39,742 __________ (1) Investments with no stated maturities, which consist of equity securities, are included with contractual maturities due after 10 years. Table 3.6 : Contractual Maturities of Securities Held to Maturity September 30, 2017 (Dollars in millions) Carrying Value Fair Value Due in 1 year or less $ 200 $ 199 Due after 1 year through 5 years 753 795 Due after 5 years through 10 years 598 625 Due after 10 years 27,099 27,708 Total $ 28,650 $ 29,327 Because borrowers may have the right to call or prepay certain obligations, the expected maturities of our securities are likely to differ from the scheduled contractual maturities presented above. The table below summarizes, by major security type, the expected maturities and weighted-average yields of our investment securities as of September 30, 2017 . Table 3.7 : Expected Maturities and Weighted-Average Yields of Securities September 30, 2017 (Dollars in millions) Due in 1 Year or Less Due > 1 Year through 5 Years Due > 5 Years through 10 Years Due > 10 Years Total Fair value of securities available for sale: U.S. Treasury securities $ 202 $ 647 $ 4,290 $ 0 $ 5,139 RMBS: Agency 173 12,086 13,780 0 26,039 Non-agency 11 1,094 860 234 2,199 Total RMBS 184 13,180 14,640 234 28,238 CMBS: Agency 151 1,899 971 0 3,021 Non-agency 178 1,207 423 0 1,808 Total CMBS 329 3,106 1,394 0 4,829 Other ABS 282 265 0 0 547 Other securities 206 335 352 96 989 Total securities available for sale $ 1,203 $ 17,533 $ 20,676 $ 330 $ 39,742 Amortized cost of securities available for sale $ 1,204 $ 17,346 $ 20,598 $ 291 $ 39,439 Weighted-average yield for securities available for sale (1) 1.42 % 2.51 % 2.32 % 6.26 % 2.40 % Carrying value of securities held to maturity: U.S. Treasury securities $ 199 $ 0 $ 0 $ 0 $ 199 Agency RMBS 22 1,781 18,421 4,571 24,795 Agency CMBS 0 1,955 628 1,073 3,656 Total securities held to maturity $ 221 $ 3,736 $ 19,049 $ 5,644 $ 28,650 Fair value of securities held to maturity $ 220 $ 3,832 $ 19,513 $ 5,762 $ 29,327 Weighted-average yield for securities held to maturity (1) 0.67 % 2.52 % 2.67 % 3.33 % 2.76 % __________ (1) The weighted-average yield represents the effective yield for the investment securities and is calculated based on the amortized cost of each security. Other-Than-Temporary Impairment We evaluate all securities in an unrealized loss position at least on a quarterly basis, and more often as market conditions require, to assess whether the impairment is other-than-temporary. Our OTTI assessment is based on a discounted cash flow analysis which requires careful use of judgments and assumptions. A number of qualitative and quantitative criteria may be considered in our assessment as applicable, including the size and the nature of the portfolio; historical and projected performance such as prepayment, default and loss severity for the RMBS portfolio; recent credit events specific to the issuer and/or industry to which the issuer belongs; the payment structure of the security; external credit ratings of the issuer and any failure or delay of the issuer to make scheduled interest or principal payments; the value of underlying collateral; our intent and ability to hold the security; and current and projected market and macro-economic conditions. If we intend to sell a security in an unrealized loss position or it is more likely than not that we will be required to sell the security prior to recovery of its amortized cost basis, the entire difference between the amortized cost basis of the security and its fair value is recognized in earnings. As of September 30, 2017 , for any securities with unrealized losses recorded in AOCI, we do not intend to sell, nor believe that we will be required to sell, these securities prior to recovery of their amortized cost. For those securities that we do not intend to sell nor expect to be required to sell, an analysis is performed to determine if any of the impairment is due to credit-related factors or whether it is due to other factors, such as interest rates. Credit-related impairment is recognized in earnings, with the remaining unrealized non-credit-related impairment recorded in AOCI. We determine the credit component based on the difference between the security’s amortized cost basis and the present value of its expected cash flows, discounted based on the effective yield. The table below presents a rollforward of the credit-related OTTI recognized in earnings for the three and nine months ended September 30, 2017 and 2016 on investment securities for which we had no intent to sell. Table 3.8 : Credit Impairment Rollforward Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Credit loss component, beginning of period $ 207 $ 204 $ 207 $ 199 Additions: Initial credit impairment 1 0 1 1 Subsequent credit impairment 0 0 1 7 Total additions 1 0 2 8 Reductions due to payoffs, disposals, transfers and other (61 ) 0 (62 ) (3 ) Credit loss component, end of period $ 147 $ 204 $ 147 $ 204 Realized Gains and Losses on Securities and OTTI Recognized in Earnings The following table presents the gross realized gains and losses on the sale and redemption of securities available for sale, and the OTTI losses recognized in earnings for the three and nine months ended September 30, 2017 and 2016 . We also present the proceeds from the sale of securities available for sale for the periods presented. We did not sell any investment securities that are classified as held to maturity. Table 3.9 : Realized Gains and Losses and OTTI Recognized in Earnings Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Realized gains (losses): Gross realized gains $ 118 $ 2 $ 123 $ 8 Gross realized losses (49 ) (1 ) (54 ) (5 ) Net realized gains 69 1 69 3 OTTI recognized in earnings: Credit-related OTTI (1 ) 0 (2 ) (8 ) Intent-to-sell OTTI 0 0 (3 ) (2 ) Total OTTI recognized in earnings (1 ) 0 (5 ) (10 ) Net securities gains (losses) $ 68 $ 1 $ 64 $ (7 ) Total proceeds from sales $ 2,670 $ 828 $ 5,793 $ 3,528 Securities Pledged and Received As part of our liquidity management strategy, we pledge securities to secure borrowings from counterparties including the Federal Home Loan Banks (“FHLB”). We also pledge securities to secure trust and public deposits and for other purposes as required or permitted by law. We pledged securities available for sale with a fair value of $1.6 billion and $1.9 billion as of September 30, 2017 and December 31, 2016 , respectively. We also pledged securities held to maturity with a carrying value of $7.8 billion and $8.1 billion as of September 30, 2017 and December 31, 2016 , respectively. Of the total securities pledged as collateral, we have encumbered a fair value of $8.7 billion and $9.3 billion as of September 30, 2017 and December 31, 2016 , respectively, primarily related to Public Fund deposits. We accepted pledges of securities with a fair value of $1 million and $16 million as of September 30, 2017 and December 31, 2016 , respectively, primarily related to our derivative transactions. Purchased Credit-Impaired Debt Securities The table below presents the outstanding balance and carrying value of the purchased credit-impaired debt securities as of September 30, 2017 and December 31, 2016 . Table 3.10 : Outstanding Balance and Carrying Value of Acquired Credit-Impaired Debt Securities (Dollars in millions) September 30, 2017 December 31, 2016 Outstanding balance $ 2,226 $ 2,899 Carrying value 1,913 2,277 Changes in Accretable Yield of Purchased Credit-Impaired Debt Securities The following table presents changes in the accretable yield related to the purchased credit-impaired debt securities for the three and nine months ended September 30, 2017 . Table 3.11 : Changes in the Accretable Yield of Purchased Credit-Impaired Debt Securities (Dollars in millions) Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Accretable yield, beginning of period $ 1,093 $ 1,173 Accretion recognized in earnings (46 ) (144 ) Reduction due to payoffs, disposals, transfers and other (154 ) (157 ) Net reclassifications from nonaccretable difference (35 ) (14 ) Accretable yield, end of period $ 858 $ 858

Loans

Loans	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans	NOTE 4—LOANS Loan Portfolio Composition Our loan portfolio consists of loans held for investment, including loans held in our consolidated trusts, and loans held for sale, and is divided into three portfolio segments: credit card, consumer banking and commercial banking. Credit card loans consist of domestic and international credit card loans. Consumer banking loans consist of auto, home and retail banking loans. Commercial banking loans consist of commercial and multifamily real estate, commercial and industrial, and small-ticket commercial real estate loans. Our portfolio of loans held for investment also includes certain consumer and commercial loans acquired through business combinations that were recorded at fair value at acquisition and subsequently accounted for based on cash flows expected to be collected, which are referred to as PCI loans. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for additional information on the accounting guidance for these loans. The credit metrics presented in this section exclude loans held for sale, which are carried at lower of cost or fair value. Credit Quality We closely monitor economic conditions and loan performance trends to manage and evaluate our exposure to credit risk. Trends in delinquency rates are an indicator, among other considerations, of credit risk within our loan portfolio. The level of nonperforming loans represents another indicator of the potential for future credit losses. Accordingly, key metrics we track and use in evaluating the credit quality of our loan portfolio include delinquency and nonperforming loan rates, as well as net charge-off rates and our internal risk ratings of larger balance commercial loans. The table below presents the composition and an aging analysis of our loans held for investment portfolio as of September 30, 2017 and December 31, 2016 . The delinquency aging includes all past due loans, both performing and nonperforming. Table 4.1 : Loan Portfolio Composition and Aging Analysis September 30, 2017 (Dollars in millions) Current 30-59 Days 60-89 Days > 90 Days Total Delinquent Loans PCI Loans Total Loans Credit Card: Domestic credit card $ 96,010 $ 1,223 $ 871 $ 1,846 $ 3,940 $ 31 $ 99,981 International card businesses 8,810 135 78 126 339 0 9,149 Total credit card 104,820 1,358 949 1,972 4,279 31 109,130 Consumer Banking: Auto 49,945 2,125 944 276 3,345 0 53,290 Home loan 7,294 36 12 48 96 11,430 18,820 Retail banking 3,387 21 7 18 46 21 3,454 Total consumer banking 60,626 2,182 963 342 3,487 11,451 75,564 Commercial Banking: Commercial and multifamily real estate 27,839 12 1 67 80 25 27,944 Commercial and industrial 38,495 52 93 188 333 478 39,306 Total commercial lending 66,334 64 94 255 413 503 67,250 Small-ticket commercial real estate 412 3 1 4 8 0 420 Total commercial banking 66,746 67 95 259 421 503 67,670 Other loans 54 1 1 2 4 0 58 Total loans (1) $ 232,246 $ 3,608 $ 2,008 $ 2,575 $ 8,191 $ 11,985 $ 252,422 % of Total loans 92.01 % 1.43 % 0.79 % 1.02 % 3.24 % 4.75 % 100.00 % December 31, 2016 (Dollars in millions) Current 30-59 Days 60-89 Days > 90 Days Total Delinquent Loans PCI Loans Total Loans Credit Card: Domestic credit card $ 93,279 $ 1,153 $ 846 $ 1,840 $ 3,839 $ 2 $ 97,120 International card businesses 8,115 124 72 121 317 0 8,432 Total credit card 101,394 1,277 918 1,961 4,156 2 105,552 Consumer Banking: Auto 44,762 2,041 890 223 3,154 0 47,916 Home loan 6,951 44 20 141 205 14,428 21,584 Retail banking 3,477 22 7 20 49 28 3,554 Total consumer banking 55,190 2,107 917 384 3,408 14,456 73,054 Commercial Banking: Commercial and multifamily real estate 26,536 45 0 0 45 28 26,609 Commercial and industrial 38,831 27 84 297 408 585 39,824 Total commercial lending 65,367 72 84 297 453 613 66,433 Small-ticket commercial real estate 473 7 1 2 10 0 483 Total commercial banking 65,840 79 85 299 463 613 66,916 Other loans 56 3 0 5 8 0 64 Total loans (1) $ 222,480 $ 3,466 $ 1,920 $ 2,649 $ 8,035 $ 15,071 $ 245,586 % of Total loans 90.59 % 1.41 % 0.78 % 1.08 % 3.27 % 6.14 % 100.00 % __________ (1) Loans (other than PCI loans) include unearned income, unamortized premiums and discounts, and unamortized deferred fees and costs totaling $739 million and $558 million as of September 30, 2017 and December 31, 2016 , respectively. We pledged loan collateral of $28.5 billion and $29.3 billion to secure the majority of our FHLB borrowing capacity of $22.9 billion and $24.9 billion as of September 30, 2017 and December 31, 2016 , respectively. The following table presents the outstanding balance of loans 90 days or more past due that continue to accrue interest and loans classified as nonperforming as of September 30, 2017 and December 31, 2016 . Table 4.2 : 90+ Day Delinquent Loans Accruing Interest and Nonperforming Loans (1) September 30, 2017 December 31, 2016 (Dollars in millions) > 90 Days and Accruing Nonperforming Loans > 90 Days and Accruing Nonperforming Loans Credit Card: Domestic credit card $ 1,846 N/A $ 1,840 N/A International card businesses 120 $ 25 96 $ 42 Total credit card 1,966 25 1,936 42 Consumer Banking: Auto 0 346 0 223 Home loan 0 158 0 273 Retail banking 0 33 0 31 Total consumer banking 0 537 0 527 September 30, 2017 December 31, 2016 (Dollars in millions) > 90 Days and Accruing Nonperforming Loans > 90 Days and Accruing Nonperforming Loans Commercial Banking: Commercial and multifamily real estate $ 4 $ 64 $ 0 $ 30 Commercial and industrial 0 717 0 988 Total commercial lending 4 781 0 1,018 Small-ticket commercial real estate 0 7 0 4 Total commercial banking 4 788 0 1,022 Other loans 0 4 0 8 Total $ 1,970 $ 1,354 $ 1,936 $ 1,599 % of Total loans 0.78 % 0.54 % 0.79 % 0.65 % __________ (1) Nonperfor ming loans generally include loans that have been placed on nonaccrual status. PCI loans are excluded from loans reported as 90 days or more past due and accruing interest as well as nonperforming loans. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for additional information on our policies for nonperforming loans. Credit Card Our credit card loan portfolio is highly diversified across millions of accounts and numerous geographies without significant individual exposure. We therefore generally manage credit risk based on portfolios with common risk characteristics. The risk in our credit card loan portfolio correlates to broad economic trends, such as unemployment rates and home values, as well as consumers’ financial condition, all of which can have a material effect on credit performance. The primary indicators we assess in monitoring the credit quality and risk of our credit card portfolio are delinquency and charge-off trends, including an analysis of loan migration between delinquency categories over time. The table below displays the geographic profile of our credit card loan portfolio as of September 30, 2017 and December 31, 2016 . Table 4.3 : Credit Card Risk Profile by Geographic Region September 30, 2017 December 31, 2016 (Dollars in millions) Amount % of Total (1) Amount % of Total (1) Domestic credit card: California $ 10,946 10.0 % $ 11,068 10.5 % Texas 7,474 6.8 7,227 6.8 New York 7,069 6.5 7,090 6.7 Florida 6,453 5.9 6,540 6.2 Illinois 4,499 4.1 4,492 4.3 Pennsylvania 4,294 3.9 4,048 3.8 Ohio 3,689 3.4 3,654 3.5 New Jersey 3,441 3.2 3,488 3.3 Michigan 3,334 3.1 3,164 3.0 Other 48,782 44.7 46,349 43.9 Total domestic credit card 99,981 91.6 97,120 92.0 International card businesses: Canada 6,070 5.6 5,594 5.3 United Kingdom 3,079 2.8 2,838 2.7 Total international card businesses 9,149 8.4 8,432 8.0 Total credit card $ 109,130 100.0 % $ 105,552 100.0 % __________ (1) P ercentages by geographic region are calculated based on period-end amounts. The table below presents net charge-offs for the three and nine months ended September 30, 2017 and 2016 . Table 4.4 : Credit Card Net Charge-Offs Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in millions) Amount Rate (1) Amount Rate (1) Amount Rate (1) Amount Rate (1) Net charge-offs: (1) Domestic credit card (2) $ 1,087 4.64 % $ 841 3.74 % $ 3,455 4.96 % $ 2,602 3.99 % International card businesses 68 3.08 65 3.18 227 3.60 203 3.32 Total credit card (2) $ 1,155 4.51 $ 906 3.70 $ 3,682 4.85 $ 2,805 3.93 __________ (1) Net charge-offs consist of the unpaid principal balance that we determine to be uncollectible, net of recovered amounts. The net charge-off rate is calculated by dividing annualized net charge-offs by average balance of loans held for investment for the period for each loan category. Net charge-offs and the net charge-off rate are impacted periodically by fluctuations in recoveries, including loan sales. (2) On September 25, 2017, we completed the Cabela’s acquisition. The domestic credit card metrics reported above for the three and nine months ended September 30, 2017 include the impact of this acquisition. Excluding this impact (i) the total credit card and domestic credit card net charge-off rate for the three months ended September 30, 2017 would have been 4.52% and 4.66% , respectively; and (ii) the total credit card and domestic credit card net charge-off rate for the nine months ended September 30, 2017 would have been 4.85% and 4.97% , respectively. Consumer Banking Our consumer banking loan portfolio consists of auto, home and retail banking loans. Similar to our credit card loan portfolio, the risk in our consumer banking loan portfolio correlates to broad economic trends, such as unemployment rates, gross domestic product (“GDP”) and home values, as well as consumers’ financial condition, all of which can have a material effect on credit performance. Delinquency, nonperforming loans and charge-off trends are key indicators we assess in monitoring the credit quality and risk of our consumer banking loan portfolio. The table below displays the geographic profile of our consumer banking loan portfolio, including PCI loans as of September 30, 2017 and December 31, 2016 . Table 4.5 : Consumer Banking Risk Profile by Geographic Region September 30, 2017 December 31, 2016 (Dollars in millions) Amount % of Total (1) Amount % of Total (1) Auto: Texas $ 6,961 9.2 % $ 6,304 8.6 % California 6,052 8.0 5,448 7.5 Florida 4,402 5.8 3,985 5.5 Georgia 2,715 3.6 2,506 3.4 Ohio 2,265 3.0 2,017 2.8 Louisiana 2,260 3.0 2,159 3.0 Illinois 2,188 2.9 2,065 2.8 Other 26,447 35.0 23,432 32.0 Total auto 53,290 70.5 47,916 65.6 Home loan: California 4,115 5.4 4,993 6.8 New York 1,985 2.6 2,036 2.8 Maryland 1,287 1.7 1,409 1.9 Virginia 1,102 1.5 1,204 1.7 Illinois 1,053 1.4 1,218 1.7 New Jersey 1,000 1.3 1,112 1.5 Texas 883 1.2 823 1.1 Other 7,395 9.8 8,789 12.0 Total home loan 18,820 24.9 21,584 29.5 Retail banking: Louisiana 977 1.3 1,010 1.4 New York 934 1.2 941 1.3 Texas 718 1.0 756 1.0 New Jersey 219 0.3 238 0.3 Maryland 187 0.2 190 0.3 Virginia 154 0.2 156 0.2 Other 265 0.4 263 0.4 Total retail banking 3,454 4.6 3,554 4.9 Total consumer banking $ 75,564 100.0 % $ 73,054 100.0 % __________ (1) Pe rcentages by geographic region are calculated based on period-end amounts. The table below presents nonperforming loans in our consumer banking loan portfolio as of September 30, 2017 and December 31, 2016 , as well as net charge-offs for the three and nine months ended September 30, 2017 and 2016 . Table 4.6 : Consumer Banking Net Charge-Offs and Nonperforming Loans Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in millions) Amount Rate (1) Amount Rate (1) Amount Rate (1) Amount Rate (1) Net charge-offs: Auto $ 257 1.96 % $ 210 1.85 % $ 671 1.77 % $ 508 1.55 % Home loan (2) 1 0.02 1 0.03 5 0.03 9 0.05 Retail banking 18 2.10 16 1.75 50 1.91 39 1.46 Total consumer banking (2) $ 276 1.47 $ 227 1.26 $ 726 1.30 $ 556 1.04 September 30, 2017 December 31, 2016 (Dollars in millions) Amount Rate (3) Amount Rate (3) Nonperforming loans: Auto $ 346 0.65 % $ 223 0.47 % Home loan (4) 158 0.84 273 1.26 Retail banking 33 0.97 31 0.86 Total consumer banking (4) $ 537 0.71 $ 527 0.72 __________ (1) The net charge-off rate is calculated by dividing annualized net charge-offs by average balance of loans held for investment for the period for each loan category. (2) Excluding the impact of PCI loans, the net charge-off rates for our home loan and total consumer banking portfolios were 0.06% and 1.74% , respectively, for the three months ended September 30, 2017 , compared to 0.08% and 1.62% , respectively, for the three months ended September 30, 2016 ; and 0.08% and 1.57% , respectively, for the nine months ended September 30, 2017 , compared to 0.18% and 1.37% , respectively, for the nine months ended September 30, 2016 . (3) Nonperforming loan rates are calculated based on nonperforming loans for each category divided by period-end total loans held for investment for each respective category. (4) Excluding the impact of PCI loans, the nonperforming loan rates for our home loan and total consumer banking portfolios were 2.13% and 0.84% , respectively, as of September 30, 2017 , compared to 3.81% and 0.90% , respectively, as of December 31, 2016 . Home Loan Our home loan portfolio consists of both first-lien and second-lien residential mortgage loans. In evaluating the credit quality and risk of our home loan portfolio, we monitor a variety of mortgage loan characteristics that may affect the default experience on this loan portfolio, such as vintage, geographic concentrations, lien priority and product type. Certain loan concentrations have experienced higher delinquency rates as a result of the significant decline in home prices after the peak in 2006 and subsequent rise in unemployment. These loan concentrations include loans originated between 2006 and 2008 in an environment of decreasing home sales, broadly declining home prices and more relaxed underwriting standards. The following table presents the distribution of our home loan portfolio as of September 30, 2017 and December 31, 2016 , based on selected key risk characteristics. Table 4.7 : Home Loan Risk Profile by Vintage, Geography, Lien Priority and Interest Rate Type September 30, 2017 Loans PCI Loans (1) Total Home Loans (Dollars in millions) Amount % of Total (2) Amount % of Total (2) Amount % of Total (2) Origination year: (3) < = 2008 $ 1,689 9.0 % $ 7,808 41.5 % $ 9,497 50.5 % 2009 65 0.3 833 4.5 898 4.8 2010 66 0.4 1,172 6.2 1,238 6.6 2011 120 0.6 1,272 6.8 1,392 7.4 2012 727 3.9 192 1.0 919 4.9 2013 402 2.1 48 0.3 450 2.4 2014 491 2.6 28 0.1 519 2.7 2015 936 5.0 28 0.1 964 5.1 2016 1,647 8.7 23 0.1 1,670 8.8 2017 1,247 6.7 26 0.1 1,273 6.8 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % Geographic concentration: (4) California $ 999 5.3 % $ 3,116 16.6 % $ 4,115 21.9 % New York 1,400 7.4 585 3.1 1,985 10.5 Maryland 610 3.2 677 3.6 1,287 6.8 Virginia 538 2.9 564 3.0 1,102 5.9 Illinois 154 0.8 899 4.8 1,053 5.6 New Jersey 391 2.1 609 3.2 1,000 5.3 Texas 804 4.3 79 0.4 883 4.7 Louisiana 848 4.5 19 0.1 867 4.6 Florida 184 1.0 618 3.3 802 4.3 Arizona 94 0.5 634 3.4 728 3.9 Other 1,368 7.3 3,630 19.2 4,998 26.5 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % Lien type: 1 st lien $ 6,414 34.1 % $ 11,193 59.5 % $ 17,607 93.6 % 2 nd lien 976 5.2 237 1.2 1,213 6.4 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % Interest rate type: Fixed rate $ 3,725 19.8 % $ 1,653 8.8 % $ 5,378 28.6 % Adjustable rate 3,665 19.5 9,777 51.9 13,442 71.4 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % December 31, 2016 Loans PCI Loans (1) Total Home Loans (Dollars in millions) Amount % of Total (2) Amount % of Total (2) Amount % of Total (2) Origination year: (3) < = 2008 $ 2,166 10.0 % $ 9,684 44.9 % $ 11,850 54.9 % 2009 80 0.4 1,088 5.0 1,168 5.4 2010 82 0.4 1,562 7.2 1,644 7.6 2011 139 0.6 1,683 7.8 1,822 8.4 2012 969 4.5 268 1.2 1,237 5.7 2013 465 2.2 59 0.2 524 2.4 2014 557 2.6 31 0.2 588 2.8 2015 1,024 4.7 30 0.2 1,054 4.9 2016 1,674 7.8 23 0.1 1,697 7.9 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % Geographic concentration: (4) California $ 976 4.5 % $ 4,017 18.6 % $ 4,993 23.1 % New York 1,343 6.2 693 3.2 2,036 9.4 Maryland 585 2.7 824 3.9 1,409 6.6 Illinois 108 0.5 1,110 5.1 1,218 5.6 Virginia 490 2.3 714 3.3 1,204 5.6 New Jersey 379 1.8 733 3.4 1,112 5.2 Louisiana 962 4.5 23 0.1 985 4.6 Florida 159 0.7 772 3.6 931 4.3 Arizona 89 0.4 799 3.7 888 4.1 Texas 725 3.4 98 0.4 823 3.8 Other 1,340 6.2 4,645 21.5 5,985 27.7 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % Lien type: 1 st lien $ 6,182 28.7 % $ 14,159 65.5 % $ 20,341 94.2 % 2 nd lien 974 4.5 269 1.3 1,243 5.8 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % Interest rate type: Fixed rate $ 3,394 15.8 % $ 1,822 8.4 % $ 5,216 24.2 % Adjustable rate 3,762 17.4 12,606 58.4 16,368 75.8 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % __________ (1) The PCI loan balances with an origination date in the years subsequent to 2012 represent refinancing of previously acquired home loans. (2) Percentages within each risk category are calculated based on period-end amounts. (3) Modified loans are reported in the origination year of the initial borrowing. (4) States listed represent those that have the highest individual concentration of home loans. Our recorded investment in home loans that are in process of foreclosure was $310 million and $382 million as of September 30, 2017 and December 31, 2016 , respectively. We commence the foreclosure process on home loans when a borrower becomes at least 120 days delinquent in accordance with Consumer Financial Protection Bureau regulations. Foreclosure procedures and timelines vary according to state laws. As of September 30, 2017 and December 31, 2016 , the carrying value of the foreclosed residential real estate properties we hold and report as other assets on our consolidated balance sheets totaled $47 million and $69 million , respectively. Commercial Banking We evaluate the credit risk of commercial loans using a dual risk rating system. We assign internal risk ratings to loans based on relevant information about the ability of the borrowers to repay their debt. In determining the risk rating of a particular loan, some of the factors considered are the borrower’s current financial condition, historical and projected future credit performance, prospects for support from financially responsible guarantors, the estimated realizable value of any collateral and current economic trends. The scale based on our internal risk rating system is as follows: • Noncriticized: Loans that have not been designated as criticized, frequently referred to as “pass” loans. • Criticized performing: Loans in which the financial condition of the obligor is stressed, affecting earnings, cash flows or collateral values. The borrower currently has adequate capacity to meet near-term obligations; however, the stress, left unabated, may result in deterioration of the repayment prospects at some future date. • Criticized nonperforming: Loans that are not adequately protected by the current net worth and paying capacity of the obligor or the collateral pledged, if any. Loans classified as criticized nonperforming have a well-defined weakness, or weaknesses, which jeopardize the full repayment of the debt. These loans are characterized by the distinct possibility that we will sustain a credit loss if the deficiencies are not corrected and are generally placed on nonaccrual status. We use our internal risk rating system for regulatory reporting, determining the frequency of credit exposure reviews, and evaluating and determining the allowance for loan and lease losses for commercial loans. Loans of $1 million or more that are designated as criticized performing and criticized nonperforming are reviewed quarterly by management to determine if they are appropriately classified/rated and whether any impairment exists. Noncriticized loans greater than $1 million are specifically reviewed, at least annually, to determine the appropriate risk rating. In addition, we evaluate the risk rating during the renewal process of any loan or if a loan becomes past due. The following table presents the geographic distribution and internal risk ratings of our commercial loan portfolio as of September 30, 2017 and December 31, 2016 . Table 4.8 : Commercial Banking Risk Profile by Geographic Region and Internal Risk Rating September 30, 2017 (Dollars in millions) Commercial and Multifamily Real Estate % of Total (1) Commercial and Industrial % of Total (1) Small-Ticket Commercial Real Estate % of Total (1) Total Commercial Banking % of Total (1) Geographic concentration: (2) Northeast $ 16,302 58.4 % $ 8,498 21.6 % $ 259 61.7 % $ 25,059 37.1 % Mid-Atlantic 3,132 11.2 3,838 9.8 15 3.6 6,985 10.3 South 3,692 13.2 14,991 38.1 27 6.4 18,710 27.6 Other 4,818 17.2 11,979 30.5 119 28.3 16,916 25.0 Total $ 27,944 100.0 % $ 39,306 100.0 % $ 420 100.0 % $ 67,670 100.0 % Internal risk rating: (3) Noncriticized $ 27,369 98.0 % $ 35,721 90.9 % $ 411 97.8 % $ 63,501 93.8 % Criticized performing 486 1.7 2,390 6.1 2 0.5 2,878 4.3 Criticized nonperforming 64 0.2 717 1.8 7 1.7 788 1.2 PCI loans 25 0.1 478 1.2 0 0.0 503 0.7 Total $ 27,944 100.0 % $ 39,306 100.0 % $ 420 100.0 % $ 67,670 100.0 % December 31, 2016 (Dollars in millions) Commercial and Multifamily Real Estate % of Total (1) Commercial and Industrial % of Total (1) Small-Ticket Commercial Real Estate % of Total (1) Total Commercial Banking % of Total (1) Geographic concentration: (2) Northeast $ 15,714 59.0 % $ 9,628 24.2 % $ 298 61.7 % $ 25,640 38.3 % Mid-Atlantic 3,024 11.4 3,450 8.7 16 3.3 6,490 9.7 South 4,032 15.2 15,193 38.1 34 7.0 19,259 28.8 Other 3,839 14.4 11,553 29.0 135 28.0 15,527 23.2 Total $ 26,609 100.0 % $ 39,824 100.0 % $ 483 100.0 % $ 66,916 100.0 % Internal risk rating: (3) Noncriticized $ 26,309 98.9 % $ 36,046 90.5 % $ 473 97.9 % $ 62,828 93.9 % Criticized performing 242 0.9 2,205 5.5 6 1.3 2,453 3.7 Criticized nonperforming 30 0.1 988 2.5 4 0.8 1,022 1.5 PCI loans 28 0.1 585 1.5 0 0.0 613 0.9 Total $ 26,609 100.0 % $ 39,824 100.0 % $ 483 100.0 % $ 66,916 100.0 % __________ (1) Percentages calculated based on total loans held for investment in each respective loan category using period-end amounts. (2) Geographic concentration is generally determined by the location of the borrower’s business or the location of the collateral associated with the loan. Northeast consists of CT, MA, ME, NH, NJ, NY, PA and VT. Mid-Atlantic consists of DC, DE, MD, VA and WV. South consists of AL, AR, FL, GA, KY, LA, MO, MS, NC, SC, TN and TX. (3) Criticized exposures correspond to the “Special Mention,” “Substandard” and “Doubtful” asset c ategories defined by banking regulatory authorities. Impaired Loans The following table presents information about our impaired loans, excluding PCI loans, which are reported separately as of September 30, 2017 , and December 31, 2016 , and for the three and nine months ended September 30, 2017 and 2016 . Table 4.9 : Impaired Loans (1) September 30, 2017 (Dollars in millions) With an Allowance Without an Allowance Total Recorded Investment Related Allowance Net Recorded Investment Unpaid Principal Balance Credit Card: Domestic credit card $ 612 $ 0 $ 612 $ 207 $ 405 $ 598 International card businesses 165 0 165 81 84 160 Total credit card (2) 777 0 777 288 489 758 Consumer Banking: Auto (3) 353 134 487 32 455 738 Home loan 190 36 226 15 211 285 Retail banking 50 12 62 8 54 66 Total consumer banking 593 182 775 55 720 1,089 Commercial Banking: Commercial and multifamily real estate 142 25 167 10 157 168 Commercial and industrial 893 247 1,140 79 1,061 1,701 Total commercial lending 1,035 272 1,307 89 1,218 1,869 Small-ticket commercial real estate 7 0 7 0 7 9 Total commercial banking 1,042 272 1,314 89 1,225 1,878 Total $ 2,412 $ 454 $ 2,866 $ 432 $ 2,434 $ 3,725 December 31, 2016 (Dollars in millions) With an Allowance Without an Allowance Total Recorded Investment Related Allowance Net Recorded Investment Unpaid Principal Balance Credit Card: Domestic credit card $ 581 $ 0 $ 581 $ 174 $ 407 $ 566 International card businesses 134 0 134 65 69 129 Total credit card (2) 715 0 715 239 476 695 Consumer Banking: Auto (3) 316 207 523 24 499 807 Home loan 241 117 358 19 339 464 Retail banking 52 10 62 14 48 65 Total consumer banking 609 334 943 57 886 1,336 Commercial Banking: Commercial and multifamily real estate 83 29 112 7 105 112 Commercial and industrial 1,249 144 1,393 162 1,231 1,444 Total commercial lending 1,332 173 1,505 169 1,336 1,556 Small-ticket commercial real estate 4 0 4 0 4 4 Total commercial banking 1,336 173 1,509 169 1,340 1,560 Total $ 2,660 $ 507 $ 3,167 $ 465 $ 2,702 $ 3,591 Three Months Ended Nine Months Ended September 30, 2017 September 30, 2017 (Dollars in millions) Average Interest Average Interest Credit Card: Domestic credit card $ 601 $ 16 $ 593 $ 47 International card businesses 160 3 150 8 Total credit card (2) 761 19 743 55 Consumer Banking: Auto (3) 485 13 498 39 Home loan 288 2 316 4 Retail banking 60 0 59 1 Total consumer banking 833 15 873 44 Commercial Banking: Commercial and multifamily real estate 152 1 132 3 Commercial and industrial 1,130 5 1,220 13 Total commercial lending 1,282 6 1,352 16 Small-ticket commercial real estate 8 0 7 0 Total commercial banking 1,290 6 1,359 16 Total $ 2,884 $ 40 $ 2,975 $ 115 Three Months Ended Nine Months Ended September 30, 2016 September 30, 2016 (Dollars in millions) Average Interest Average Interest Credit Card: Domestic credit card $ 528 $ 15 $ 530 $ 43 International card businesses 135 3 132 8 Total credit card (2) 663 18 662 51 Consumer Banking: Auto (3) 498 21 495 64 Home loan 358 2 362 4 Retail banking 60 0 62 1 Total consumer banking 916 23 919 69 Commercial Banking: Commercial and multifamily real estate 128 0 111 2 Commercial and industrial 1,277 4 1,171 9 Total commercial lending 1,405 4 1,282 11 Small-ticket commercial real estate 8 0 8 0 Total commercial banking 1,413 4 1,290 11 Total $ 2,992 $ 45 $ 2,871 $ 131 __________ (1) Impaired loans include loans modified in troubled debt restructurings (“TDRs”), all nonperforming commercial loans and nonperforming home loans with a specific impairment. Impaired loans without an allowance generally represent loans that have been charged down to the fair value of the underlying collateral for which we believe no additional losses have been incurred, or where the fair value of the underlying collateral meets or exceeds the loan’s amortized cost. (2) The period-end and average recorded investments of credit card loans include finance charges and fees. (3) Although certain assets from loan recovery inventory are not reported in our loans held for investment, they are included as impaired loans above since they are reported as TD Rs. The total recorded investment of loans modified in TDRs represents $2.4 billion and $2.5 billion of the impaired loans presented above as of September 30, 2017 and December 31, 2016 , respectively. TDRs classified as performing in our credit card and consumer banking loan portfolios totaled $1.2 billion and $1.1 billion as of September 30, 2017 and December 31, 2016 , respectively. TDRs classified as performing in our commercial banking loan portfolio totaled $526 million and $487 million as of September 30, 2017 and December 31, 2016 , respectively. Commitments to lend additional funds on loans modified in TDRs totaled $243 million and $208 million as of September 30, 2017 and December 31, 2016 , respectively. As part of our loan modification programs to borrowers experiencing financial difficulty, we may provide multiple concessions to minimize our economic loss and improve long-term loan performance and collectability. The following tables present the major modification types, recorded investment amounts and financial effects of loans modified in TDRs during the three and nine months ended September 30, 2017 and 2016 . Table 4.10 : Troubled Debt Restructurings Total Loans (1)(2) Three Months Ended September 30, 2017 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 107 100 % 14.51 % 0 % 0 0 % $ 0 International card businesses 41 100 26.71 0 0 0 0 Total credit card 148 100 17.85 0 0 0 0 Consumer Banking: Auto 104 35 3.78 99 5 0 0 Home loan 3 19 1.35 53 292 0 0 Retail banking 7 13 9.30 82 10 0 0 Total consumer banking 114 33 3.88 97 9 0 0 Commercial Banking: Commercial and multifamily real estate 3 0 0.00 100 6 0 0 Commercial and industrial 202 24 0.24 96 18 0 0 Total commercial lending 205 24 0.24 96 18 0 0 Small-ticket commercial real estate 1 0 0.00 12 0 0 0 Total commercial banking 206 24 0.24 96 18 0 0 Total $ 468 50 11.91 66 15 0 $ 0 Total Loans (1)(2) Nine Months Ended September 30, 2017 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 291 100 % 14.25 % 0 % 0 0 % $ 0 International card businesses 124 100 26.46 0 0 0 0 Total credit card 415 100 17.90 0 0 0 0 Consumer Banking: Auto 240 44 3.83 96 6 3 7 Home loan 17 49 2.44 79 234 2 0 Retail banking 13 21 5.56 73 10 0 0 Total consumer banking 270 44 3.77 94 18 3 7 Commercial Banking: Commercial and multifamily real estate 29 7 0.02 26 5 0 0 Commercial and industrial 483 15 0.81 59 18 0 0 Total commercial lending 512 15 0.79 57 18 0 0 Small-ticket commercial real estate 2 0 0.00 5 0 0 0 Total commercial banking 514 15 0.79 57 18 0 0 Total $ 1,199 51 13.04 45 18 0 $ 7 Total Loans (1)(2) Three Months Ended September 30, 2016 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 88 100 % 13.12 % 0 % 0 0 % $ 0 International card businesses 35 100 25.91 0 0 0 0 Total credit card 123 100 16.69 0 0 0 0 Consumer Banking: Auto 91 47 3.52 75 8 24 21 Home loan 13 71 2.18 90 241 2 0 Retail banking 9 11 10.44 61 9 0 0 Total consumer banking 113 47 3.41 75 38 20 21 Commercial Banking: Commercial and multifamily real estate 13 0 0.00 0 0 97 3 Commercial and industrial 257 1 0.15 49 10 19 26 Total commercial lending 270 1 0.15 47 10 23 29 Small-ticket commercial real estate 1 0 0.00 0 0 0 0 Total commercial banking 271 1 0.15 47 10 23 29 Total $ 507 35 12.55 42 21 17 $ 50 Total Loans (1)(2) Nine Months Ended September 30, 2016 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 212 100 % 12.95 % 0 % 0 0 % $ 0 International card businesses 104 100 25.86 0 0 0 0 Total credit card 316 100 17.18 0 0 0 0 Consumer Banking: Auto 254 45 3.75 74 7 25 57 Home loan 38 62 2.37 86 247 2 0 Retail banking 16 23 7.90 65 9 11 1 Total consumer banking 308 46 3.62 75 41 22 58 Commercial Banking: Commercial and multifamily real estate 38 0 0.00 67 6 32 3 Commercial and industrial 558 6 0.09 54 17 9 26 Total commercial lending 596 5 0.09 55 16 10 29 Small-ticket commercial real estate 1 0 0.00 0 0 0 0 Total commercial banking 597 5 0.09 55 16 10 29 Total $ 1,221 40 12.17 46 26 11 $ 87 __________ (1) Represents the recorded investment of total loans modified in TDRs at the end of the quarter in which they were modified. (2) We present the modification types utilized most prevalently across our loan portfolios. As not every modification type is included in the table above, the total percentage of TDR activity may not add up to 100%. Some loans may receive more than one type of concession as part of the modification. (3) Represents percentage of loans modified in TDRs during the period that were granted a reduced interest rate. (4) Due to multiple concessions granted to some troubled borrowers, percentages may total more than 100% for certain loan types. (5) Represents weighted average interest rate reduction for those loans that received an interest rate concession. (6) Represents percentage of loans modified in TDRs during the period that were granted a maturity date extension. (7) Represents weighted average change in maturity date for those loans that received a maturity date extension. (8) Represents percentage of loans modified in TDRs during the period that were granted forgiveness or forbearance of a portion of their balance. (9) Represents the gross balance forgiven. For loans modified in bankruptcy, the gross balance reduction represents collateral value write-downs associated with the discharge of the borrower’s obligations. TDR—Subseq

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses	9 Months Ended
	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Allowance for Loans and Lease Losses	NOTE 5—ALLOWANCE FOR LOAN AND LEASE LOSSES AND RESERVE FOR UNFUNDED LENDING COMMITMENTS Our allowance for loan and lease losses represents management’s best estimate of incurred loan and lease losses inherent in our loans held for investment portfolio as of each balance sheet date. In addition to the allowance for loan and lease losses, we also estimate probable losses related to unfunded lending commitments, such as letters of credit, financial guarantees and binding unfunded loan commitments. The provision for losses on unfunded lending commitments is included in the provision for credit losses in our consolidated statements of income and the related reserve for unfunded lending commitments is included in other liabilities on our consolidated balance sheets. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for further discussion on the methodology and policy for determining our allowance for loan and lease losses for each of our loan portfolio segments, as well as information on our reserve for unfunded lending commitments. Allowance for Loan and Lease Losses and Reserve for Unfunded Lending Commitments Activity The table below summarizes changes in the allowance for loan and lease losses and reserve for unfunded lending commitments by portfolio segment for the three and nine months ended September 30, 2017 and 2016 . Table 5.1 : Allowance for Loan and Lease Losses and Reserve for Unfunded Lending Commitments Activity Three Months Ended September 30, 2017 (Dollars in millions) Credit Card Consumer Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of June 30, 2017 $ 5,210 $ 1,199 $ 758 $ 3 $ 7,170 Charge-offs (1,471 ) (435 ) (168 ) (36 ) (2,110 ) Recoveries 316 159 5 24 504 Net charge-offs (1,155 ) (276 ) (163 ) (12 ) (1,606 ) Provision for loan and lease losses 1,466 292 75 11 1,844 Allowance build (release) for loan and lease losses 311 16 (88 ) (1 ) 238 Other changes (2) 13 (2 ) (1 ) 0 10 Balance as of September 30, 2017 5,534 1,213 669 2 7,418 Reserve for unfunded lending commitments: Balance as of June 30, 2017 0 7 132 0 139 Provision (benefit) for losses on unfunded lending commitments 0 1 (12 ) 0 (11 ) Balance as of September 30, 2017 0 8 120 0 128 Combined allowance and reserve as of September 30, 2017 $ 5,534 $ 1,221 $ 789 $ 2 $ 7,546 Nine Months Ended September 30, 2017 (Dollars in millions) Credit Card Consumer Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of December 31, 2016 $ 4,606 $ 1,102 $ 793 $ 2 $ 6,503 Charge-offs (4,644 ) (1,189 ) (334 ) (36 ) (6,203 ) Recoveries 962 463 12 32 1,469 Net charge-offs (3,682 ) (726 ) (322 ) (4 ) (4,734 ) Provision for loan and lease losses 4,580 839 210 4 5,633 Allowance build (release) for loan and lease losses 898 113 (112 ) 0 899 Other changes (2) 30 (2 ) (12 ) 0 16 Balance as of September 30, 2017 5,534 1,213 669 2 7,418 Reserve for unfunded lending commitments: Balance as of December 31, 2016 0 7 129 0 136 Provision (benefit) for losses on unfunded lending commitments 0 1 (9 ) 0 (8 ) Balance as of September 30, 2017 0 8 120 0 128 Combined allowance and reserve as of September 30, 2017 $ 5,534 $ 1,221 $ 789 $ 2 $ 7,546 Three Months Ended September 30, 2016 (Dollars in millions) Credit Card Consumer Banking Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of June 30, 2016 $ 4,086 $ 972 $ 821 $ 2 $ 5,881 Charge-offs (1,171 ) (323 ) (112 ) 0 (1,606 ) Recoveries 265 96 4 1 366 Net charge-offs (906 ) (227 ) (108 ) 1 (1,240 ) Provision (benefit) for loan and lease losses 1,272 258 96 (1 ) 1,625 Allowance build (release) for loan and lease losses 366 31 (12 ) 0 385 Other changes (2) (7 ) 0 (1 ) 0 (8 ) Balance as of September 30, 2016 4,445 1,003 808 2 6,258 Reserve for unfunded lending commitments: Balance as of June 30, 2016 0 8 161 0 169 Provision (benefit) for losses on unfunded lending commitments 0 (2 ) (35 ) 0 (37 ) Balance as of September 30, 2016 0 6 126 0 132 Combined allowance and reserve as of September 30, 2016 $ 4,445 $ 1,009 $ 934 $ 2 $ 6,390 Nine Months Ended September 30, 2016 (Dollars in millions) Credit Card Consumer Banking Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of December 31, 2015 $ 3,654 $ 868 $ 604 $ 4 $ 5,130 Charge-offs (3,608 ) (862 ) (224 ) (2 ) (4,696 ) Recoveries 803 306 10 4 1,123 Net charge-offs (2,805 ) (556 ) (214 ) 2 (3,573 ) Provision (benefit) for loan and lease losses 3,604 691 452 (4 ) 4,743 Allowance build (release) for loan and lease losses 799 135 238 (2 ) 1,170 Other changes (2) (8 ) 0 (34 ) 0 (42 ) Balance as of September 30, 2016 4,445 1,003 808 2 6,258 Reserve for unfunded lending commitments: Balance as of December 31, 2015 0 7 161 0 168 Provision (benefit) for losses on unfunded lending commitments 0 (1 ) (35 ) 0 (36 ) Balance as of September 30, 2016 0 6 126 0 132 Combined allowance and reserve as of September 30, 2016 $ 4,445 $ 1,009 $ 934 $ 2 $ 6,390 __________ (1) Primarily consists of the legacy loan portfolio of our discontinued GreenPoint mortgage operations. (2) Represents foreign currency translation adjustments and the net impact of loan transfers and sales. Components of Allowance for Loan and Lease Losses by Impairment Methodology The table below presents the components of our allowance for loan and lease losses by portfolio segment and impairment methodology with the recorded investment of the related loans as of September 30, 2017 and December 31, 2016 . Table 5.2 : Components of Allowance for Loan and Lease Losses by Impairment Methodology September 30, 2017 (Dollars in millions) Credit Card Consumer Banking Commercial Banking Other Total Allowance for loan and lease losses: Collectively evaluated (1) $ 5,246 $ 1,125 $ 575 $ 2 $ 6,948 Asset-specific (2) 288 55 89 0 432 PCI loans (3) 0 33 5 0 38 Total allowance for loan and lease losses $ 5,534 $ 1,213 $ 669 $ 2 $ 7,418 Loans held for investment: Collectively evaluated (1) $ 108,322 $ 63,432 $ 65,853 $ 58 $ 237,665 Asset-specific (2) 777 681 1,314 0 2,772 PCI loans (3) 31 11,451 503 0 11,985 Total loans held for investment $ 109,130 $ 75,564 $ 67,670 $ 58 $ 252,422 Allowance coverage ratio (4) 5.07 % 1.61 % 0.99 % 3.45 % 2.94 % December 31, 2016 (Dollars in millions) Credit Consumer Banking Commercial Banking Other Total Allowance for loan and lease losses: Collectively evaluated (1) $ 4,367 $ 1,016 $ 622 $ 2 $ 6,007 Asset-specific (2) 239 57 169 0 465 PCI loans (3) 0 29 2 0 31 Total allowance for loan and lease losses $ 4,606 $ 1,102 $ 793 $ 2 $ 6,503 Loans held for investment: Collectively evaluated (1) $ 104,835 $ 57,862 $ 64,794 $ 64 $ 227,555 Asset-specific (2) 715 736 1,509 0 2,960 PCI loans (3) 2 14,456 613 0 15,071 Total loans held for investment $ 105,552 $ 73,054 $ 66,916 $ 64 $ 245,586 Allowance coverage ratio (4) 4.36 % 1.51 % 1.19 % 3.13 % 2.65 % __________ (1) The component of the allowance for loan and lease losses for credit card and other consumer loans that we collectively evaluate for impairment is based on a statistical calculation supplemented by management judgment and interpretation. The component of the allowance for loan and lease losses for commercial loans that we collectively evaluate for impairment is based on historical loss experience for loans with similar characteristics and consideration of credit quality supplemented by management judgment and interpretation. (2) The asset-specific component of the allowance for loan and lease losses for smaller-balance impaired loans is calculated on a pool basis using historical loss experience for the respective class of assets. The asset-specific component of the allowance for loan and lease losses for larger-balance commercial loans is individually calculated for each loan. (3) The PCI loans component of the allowance for loan and lease losses is accounted for based on expected cash flows. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for details on these loans. (4) Allowance coverage ratio is calculated by dividing the period-end allowance for loan and lease losses by period-end loans held for investment within the specified loan category. We have certain credit card partnership arrangements in which our partner agrees to share a portion of the credit losses associated with the partnership that qualify for net accounting treatment. The expected reimbursements from these partners, which are netted against our allowance for loan and lease losses, result in reductions to reported net charge-offs and provision for credit losses. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for further discussion on our card partnership agreements. The table below summarizes the changes in the estimated reimbursements from these partners for the three and nine months ended September 30, 2017 and 2016 . Table 5.3 : Summary of Loss Sharing Arrangements Impacts Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Estimated reimbursements from loss sharing partners: Balance as of beginning of the period $ 263 $ 219 $ 228 $ 194 Impact to net charge-offs (66 ) (56 ) (198 ) (161 ) Impact to provision for credit losses 135 64 302 194 Balance as of end of the period $ 332 $ 227 $ 332 $ 227

Variable Interest Entities and

Variable Interest Entities and Securitizations	9 Months Ended
	Sep. 30, 2017
Variable Interest Entities and Securitization [Abstract]
Variable Interest Entities and Securitizations	NOTE 6—VARIABLE INTEREST ENTITIES AND SECURITIZATIONS In the normal course of business, we enter into various types of transactions with entities that are considered to be VIEs. Our primary involvement with VIEs has been related to our securitization transactions in which we transferred assets from our balance sheet to securitization trusts. We have primarily securitized credit card and home loans, which have provided a source of funding for us and enabled us to transfer a certain portion of the economic risk of the loans or related debt securities to third parties. The entity that has a controlling financial interest in a VIE is referred to as the primary beneficiary and is required to consolidate the VIE. The majority of the VIEs in which we are involved have been consolidated in our financial statements. Summary of Consolidated and Unconsolidated VIEs The assets of our consolidated VIEs primarily consist of cash, credit card loan receivables and the related allowance for loan and lease losses, which we report on our consolidated balance sheets under restricted cash, loans held in consolidated trusts and allowance for loan and lease losses, respectively. The assets of a particular VIE are the primary source of funding to settle its obligations. The creditors of the VIEs typically do not have recourse to the general credit of the Company. The liabilities primarily consist of debt securities issued by the VIEs, which we report under securitized debt obligations. For unconsolidated VIEs, we present the carrying amount of assets and liabilities reflected on our consolidated balance sheets and our maximum exposure to loss. Our maximum exposure to loss is estimated based on the unlikely event that all of the assets in the VIEs become worthless and we are required to meet our maximum remaining funding obligations. The table below presents a summary of certain VIEs in which we had continuing involvement or held a variable interest, aggregated based on VIEs with similar characteristics as of September 30, 2017 and December 31, 2016 . We separately present information for consolidated and unconsolidated VIEs. Table 6.1 : Carrying Amount of Consolidated and Unconsolidated VIEs September 30, 2017 Consolidated Unconsolidated (Dollars in millions) Carrying Amount of Assets Carrying Amount of Liabilities Carrying Amount of Assets Carrying Amount of Liabilities Maximum Exposure to Loss Securitization-Related VIEs: Credit card loan securitizations (1) $ 34,230 $ 17,654 $ 0 $ 0 $ 0 Home loan securitizations (2) 0 0 178 89 1,105 Total securitization-related VIEs 34,230 17,654 178 89 1,105 Other VIEs: (3) Affordable housing entities 221 18 4,237 1,316 4,237 Entities that provide capital to low-income and rural communities 1,321 128 0 0 0 Other 0 0 314 0 314 Total other VIEs 1,542 146 4,551 1,316 4,551 Total VIEs $ 35,772 $ 17,800 $ 4,729 $ 1,405 $ 5,656 December 31, 2016 Consolidated Unconsolidated (Dollars in millions) Carrying Amount of Assets Carrying Amount of Liabilities Carrying Amount of Assets Carrying Amount of Liabilities Maximum Exposure to Loss Securitization-Related VIEs: Credit card loan securitizations (1) $ 33,550 $ 19,662 $ 0 $ 0 $ 0 Home loan securitizations (2) 0 0 201 27 1,276 Total securitization-related VIEs 33,550 19,662 201 27 1,276 Other VIEs: (3) Affordable housing entities 174 9 3,862 1,093 3,862 Entities that provide capital to low-income and rural communities 927 127 0 0 0 Other 0 0 187 0 187 Total other VIEs 1,101 136 4,049 1,093 4,049 Total VIEs $ 34,651 $ 19,798 $ 4,250 $ 1,120 $ 5,325 __________ (1) Represents the carrying amount of assets and liabilities owned by the VIE, which includes the seller’s interest and repurchased notes held by other related parties. (2) The carrying amount of assets of unconsolidated securitization-related VIEs consists of retained interests associated with the securitization of option-adjustable rate mortgage (“option-ARM”) loans and letters of credit related to manufactured housing securitizations. These are reported on our consolidated balance sheets within other assets. The carrying amount of liabilities of unconsolidated securitization-related VIEs is comprised of obligations on certain swap agreements associated with the securitizations of manufactured housing loans and other obligations. These are reported on our consolidated balance sheets within other liabilities. (3) In certain investment structures, we consolidate a VIE which in turn holds as its primary asset an investment in an unconsolidated VIE. In these instances, we disclose the carrying amount of assets and liabilities on our consolidated balance sheets in the unconsolidated VIEs to avoid duplicating our exposure, as the unconsolidated VIEs are generally the operating entities generating the exposure. The carrying amount of assets and liabilities included in the unconsolidated VIE columns above related to these investment structures were $2.2 billion of assets and $898 million of liabilities as of September 30, 2017 and $1.9 billion of assets and $618 million of liabilities as of December 31, 2016 . Securitization-Related VIEs In a securitization transaction, assets from our balance sheet are transferred to a trust, which generally meets the definition of a VIE. Our primary securitization activity is in the form of credit card securitizations, conducted through securitization trusts which we consolidate. Our continuing involvement in these securitization transactions mainly consists of acting as the primary servicer and holding certain retained interests. We transfer residential home loans and multifamily commercial loans that we originate to the government-sponsored enterprises (“GSEs”) and retain the right to service the transferred loans pursuant to the guidelines set forth by the GSEs. Subsequent to such transfers, these loans are commonly securitized into RMBS or CMBS by the GSEs. We also hold RMBS, CMBS and ABS in our investment portfolio, which represent an interest in the respective securitization trusts employed in the transactions under which those securities were issued. We do not consolidate the securitization trusts employed in these transactions as we do not have the power to direct the activities that most significantly impact the economic performance of these securitization trusts. Our maximum exposure to loss as a result of our involvement with these VIEs is the carrying value of the mortgage servicing rights (“MSRs”) and investment securities on our consolidated balance sheets. See “ Note 7—Goodwill and Intangible Assets ” for information related to our MSRs associated with these residential home loan and multifamily commercial loan securitizations and “ Note 3—Investment Securities ” for more information on the securities held in our investment securities portfolio. We exclude these VIEs from the tables within this note because we do not consider our continuing involvement with these VIEs to be significant; we either invest in securities issued by the VIE and were not involved in the design of the VIE or no transfers have occurred between the VIE and us. In addition, where we have certain lending arrangements in the normal course of business with entities that could be VIEs, we have also excluded these VIEs from the tables presented in this note. See “ Note 4—Loans ” for additional information regarding our lending arrangements in the normal course of business. We also may have exposure associated with contractual obligations to repurchase previously transferred loans due to breaches of representations and warranties. See “ Note 14—Commitments, Contingencies, Guarantees and Others ” for information related to reserves we have established for our mortgage representation and warranty exposure. The table below presents our continuing involvement in certain securitization-related VIEs as of September 30, 2017 and December 31, 2016 . Table 6.2 : Continuing Involvement in Securitization-Related VIEs Mortgage (Dollars in millions) Credit Card Option- ARM GreenPoint HELOCs GreenPoint Manufactured Housing September 30, 2017: Securities held by third-party investors $ 17,087 $ 1,288 $ 44 $ 599 Receivables in the trust 34,763 1,331 38 603 Cash balance of spread or reserve accounts 0 8 N/A 121 Retained interests Yes Yes Yes Yes Servicing retained Yes Yes (1) No No (2) Amortization event (3) No No No No December 31, 2016: Securities held by third-party investors $ 18,826 $ 1,499 $ 56 $ 697 Receivables in the trust 31,762 1,549 50 702 Cash balance of spread or reserve accounts 0 8 N/A 130 Retained interests Yes Yes Yes Yes Servicing retained Yes Yes (1) No No (2) Amortization event (3) No No No No __________ (1) We continue to service certain option-ARM securitizations. (2) The core servicing activities for the manufactured housing securitizations are completed by a third party. (3) Amortization events vary according to each specific trust agreement but generally are triggered by declines in performance or credit metrics of the underlying assets, such as net charge-off rates or delinquency rates, beyond certain predetermined thresholds. Generally, the occurrence of an amortization event changes the sequencing and amount of trust-related cash flows to the benefit of more senior interest holders. Credit Card Securitizations We hold certain retained interests in our credit card securitizations and continue to service the receivables in these trusts. As of September 30, 2017 and December 31, 2016 , we were deemed to be the primary beneficiary, and accordingly, all of these trusts have been consolidated in our financial statements. Mortgage Securitizations Option-ARM Loans We had previously securitized option-ARM loans by transferring these loans to securitization trusts that had issued mortgage-backed securities to investors. The outstanding balance of debt securities held by third-party investors related to these mortgage loan securitization trusts was $1.3 billion and $1.5 billion as of September 30, 2017 and December 31, 2016 , respectively. We continue to service a portion of the remaining mortgage loans in these securitizations. We also retain rights to future cash flows arising from these securitizations, the most significant being certificated interest-only bonds issued by the trusts. We generally estimate the fair value of these retained interests based on the estimated present value of expected future cash flows, using our best estimates of the key assumptions which include credit losses, prepayment speeds and discount rates commensurate with the risks involved. For the mortgage loans that we continue to service, we do not consolidate the related trusts because we do not have the right to receive benefits nor the obligation to absorb losses that could potentially be significant to the trusts. For the remaining trusts, for which we no longer service the underlying mortgage loans, we do not consolidate these entities since we do not have the power to direct the activities that most significantly impact the economic performance of the trusts. In connection with the securitization of certain option-ARM loans, a third party is obligated to advance a portion of any “negative amortization” resulting from monthly payments that are less than the interest accrued for that payment period. We have an agreement in place with the third party that mirrors this advance requirement. The amount advanced is tracked through mortgage-backed securities retained as part of the securitization transaction. As advances occur, we record an asset in the form of negative amortization bonds, which are held at fair value in other assets on our consolidated balance sheets. Our maximum exposure is affected by rate caps and monthly payment change caps, but the funding obligation cannot exceed the difference between the original loan balance multiplied by a preset negative amortization cap and the current unpaid principal balance. For the transactions where the negative amortization funding agreements have been terminated, incremental negative amortization is funded through the available cash flow in each transaction. We have also entered into certain derivative contracts related to the securitization activities. These are classified as free-standing derivatives, with fair value adjustments recorded in non-interest income in our consolidated statements of income. See “ Note 9—Derivative Instruments and Hedging Activities ” for further details on these derivatives. GreenPoint Mortgage Home Equity Lines of Credit (“HELOCs”) Our discontinued wholesale mortgage banking unit, GreenPoint Mortgage Funding, Inc. (“GreenPoint”), previously sold HELOCs in whole loan sales that were subsequently securitized by third parties. GreenPoint acquired residual interests in certain of those securitization trusts. We do not consolidate these trusts because we either lack the power to direct the activities that most significantly impact the economic performance of the trusts or because we do not have the right to receive benefits or the obligation to absorb losses that could potentially be significant to the trusts. As the residual interest holder, GreenPoint is required to fund advances on the HELOCs when certain performance triggers are met due to deterioration in asset performance. On behalf of GreenPoint, we have funded cumulative advances of $30 million as of both September 30, 2017 and December 31, 2016 . We also have unfunded commitments of $5 million related to those interests for our non-consolidated VIEs as of both September 30, 2017 and December 31, 2016 . GreenPoint Credit Manufactured Housing As of September 30, 2017, we had certain retained interests and obligations related to the discontinued manufactured housing operations of GreenPoint Credit, LLC, a subsidiary of GreenPoint. Such discontinued operations, including the related recourse obligations, servicing rights and the primary obligation to execute mandatory clean-up calls in certain securitization transactions were sold to a third party in 2004. We did not consolidate these securitization trusts because we did not have the power to direct the activities that most significantly impact the economic performance of the trusts as we did not service the loans. The unpaid principal balance of manufactured housing securitization transactions where we were the residual interest holder was $603 million and $702 million as of September 30, 2017 and December 31, 2016 , respectively. In the event the third-party servicer could not fulfill its obligation to exercise the clean-up calls on certain securitizations, the obligation would revert to us and we would be required to acquire a maximum of approximately $391 million of loan receivables and other assets upon our execution of these clean-up calls with the requirement to absorb any losses on the loan receivables and other assets. See “ Note 14—Commitments, Contingencies, Guarantees and Others ” for information related to these obligations. On October 10, 2017, we entered into an agreement with the third-party servicer under which we assumed the mandatory obligation to exercise the remaining clean-up calls as they become due on certain securitization transactions and received approximately $37 million in compensation for assuming this obligation. As a result of this agreement, we will recognize the loan receivables and a corresponding liability on our consolidated balance sheets in the fourth quarter of 2017. We were required to fund letters of credit to cover losses on certain manufactured housing securitizations. We have the right to receive any funds remaining in the letters of credit after the securities are released. The fair value of these letters of credit are included in other assets on our consolidated balance sheets and totaled $76 million and $85 million as of September 30, 2017 and December 31, 2016 , respectively. We also have credit exposure on an agreement that we entered into to absorb a portion of the risk of loss on certain manufactured housing securitizations not subject to the funded letters of credit. Our maximum credit exposure related to the agreement totaled $11 million and $12 million as of September 30, 2017 and December 31, 2016 , respectively. Our obligation under the agreement included in other liabilities on our consolidated balance sheets was $8 million as of both September 30, 2017 and December 31, 2016 . Other VIEs Affordable Housing Entities As part of our community reinvestment initiatives, we invest in private investment funds that make equity investments in multi-family affordable housing properties. We receive affordable housing tax credits for these investments. The activities of these entities are financed with a combination of invested equity capital and debt. We account for certain of our investments in qualified affordable housing projects using the proportional amortization method if certain criteria are met. The proportional amortization method amortizes the cost of the investment over the period in which the investor expects to receive tax credits and other tax benefits, and the resulting amortization is recognized as a component of income tax expense attributable to continuing operations. For the nine months ended September 30, 2017 and 2016 , we recognized amortization of $347 million and $295 million , respectively, and tax credits of $388 million and $336 million , respectively, associated with these investments within income tax provision. The carrying value of our equity investments in these qualified affordable housing projects was $4.0 billion and $3.8 billion as of September 30, 2017 and December 31, 2016 , respectively. We are periodically required to provide additional financial or other support during the period of the investments. Our liability for these unfunded commitments was $1.5 billion and $1.2 billion as of September 30, 2017 and December 31, 2016 , respectively. Predominantly all of this liability is expected to be paid from 2017 to 2019 . For those investment funds considered to be VIEs, we are not required to consolidate them if we do not have the power to direct the activities that most significantly impact the economic performance of those entities. We record our interests in these unconsolidated VIEs in loans held for investment, other assets and other liabilities on our consolidated balance sheets. Our interests consisted of assets of approximately $4.2 billion and $3.9 billion as of September 30, 2017 and December 31, 2016 , respectively. Our maximum exposure to these entities is limited to our variable interests in the entities of $4.2 billion and $3.9 billion as of September 30, 2017 and December 31, 2016 , respectively. The creditors of the VIEs have no recourse to our general credit and we do not provide additional financial or other support other than during the period that we are contractually required to provide it. The total assets of the unconsolidated VIE investment funds were approximately $10.4 billion and $11.5 billion as of September 30, 2017 and December 31, 2016 , respectively. Entities that Provide Capital to Low-Income and Rural Communities We hold variable interests in entities (“Investor Entities”) that invest in community development entities (“CDEs”) that provide debt financing to businesses and non-profit entities in low-income and rural communities. Variable interests in the CDEs held by the consolidated Investor Entities are also our variable interests. The activities of the Investor Entities are financed with a combination of invested equity capital and debt. The activities of the CDEs are financed solely with invested equity capital. We receive federal and state tax credits for these investments. We consolidate the VIEs in which we have the power to direct the activities that most significantly impact the VIE’s economic performance and where we have the obligation to absorb losses or right to receive benefits that could be potentially significant to the VIE. We have also consolidated other investments and CDEs that are not considered to be VIEs, but where we hold a controlling financial interest. The assets of the VIEs that we consolidated, which totaled approximately $1.3 billion and $927 million as of September 30, 2017 and December 31, 2016 , respectively, are reflected on our consolidated balance sheets in cash, loans held for investment, interest receivable and other assets. The liabilities are reflected in other liabilities. The creditors of the VIEs have no recourse to our general credit. We have not provided additional financial or other support other than during the period that we are contractually required to provide it. Other Other VIEs include variable interests that we hold in companies that promote renewable energy sources and other equity method investments. We were not required to consolidate these entities because we do not have the power to direct the activities that most significantly impact their economic performance. Our maximum exposure to these entities is limited to the investment on our consolidated balance sheets of $314 million and $187 million as of September 30, 2017 and December 31, 2016 , respectively. The creditors of the other VIEs have no recourse to our general credit. We have not provided additional financial or other support other than during the period that we are contractually required to provide it.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 7—GOODWILL AND INTANGIBLE ASSETS The table below displays the components of goodwill, intangible assets and MSRs as of September 30, 2017 and December 31, 2016 . Goodwill is presented separately on our consolidated balance sheets. Intangible assets and MSRs are included in other assets on our consolidated balance sheets. Table 7.1 : Components of Goodwill, Intangible Assets and MSRs September 30, 2017 (Dollars in millions) Carrying (1) Accumulated Amortization (1) Net Goodwill $ 14,532 N/A $ 14,532 Intangible assets: Purchased credit card relationship (“PCCR”) intangibles 2,105 $ (1,800 ) 305 Core deposit intangibles 1,391 (1,368 ) 23 Other (2) 299 (146 ) 153 Total intangible assets 3,795 (3,314 ) 481 Total goodwill and intangible assets $ 18,327 $ (3,314 ) $ 15,013 MSRs: Consumer MSRs (3) $ 90 N/A $ 90 Commercial MSRs (4) 327 $ (112 ) 215 Total MSRs $ 417 $ (112 ) $ 305 December 31, 2016 (Dollars in millions) Carrying (1) Accumulated Amortization (1) Net Goodwill $ 14,519 N/A $ 14,519 Intangible assets: PCCR intangibles 2,151 $ (1,715 ) 436 Core deposit intangibles 1,391 (1,345 ) 46 Other (2) 314 (131 ) 183 Total intangible assets 3,856 (3,191 ) 665 Total goodwill and intangible assets $ 18,375 $ (3,191 ) $ 15,184 MSRs: Consumer MSRs (3) $ 80 N/A $ 80 Commercial MSRs (4) 276 $ (82 ) 194 Total MSRs $ 356 $ (82 ) $ 274 __________ (1) Certain intangible assets that were fully amortized in prior periods were removed from our consolidated balance sheets. (2) Primarily consists of intangibles for sponsorship relationships, brokerage relationship intangibles, partnership and other contract intangibles and trade name intangibles. (3) Represents MSRs related to our Consumer Banking business that are carried at fair value on our consolidated balance sheets. (4) Represents MSRs related to our Commercial Banking business that are subsequently accounted for under the amortization method and periodically assessed for impairment. Amortization expense for amortizable intangible assets, which is presented separately in our consolidated statements of income, totaled $61 million and $184 million for the three and nine months ended September 30, 2017 , respectively, and $89 million and $285 million for the three and nine months ended September 30, 2016 , respectively. Goodwill The following table presents changes in the carrying amount of goodwill as well as goodwill attributable to each of our business segments as of September 30, 2017 and December 31, 2016 . Table 7.2 : Goodwill Attributable to Business Segments (Dollars in millions) Credit Card Consumer Banking Commercial Banking Total Balance as of December 31, 2016 $ 5,018 $ 4,600 $ 4,901 $ 14,519 Acquisitions 6 0 0 6 Other adjustments (1) 7 0 0 7 Balance as of September 30, 2017 $ 5,031 $ 4,600 $ 4,901 $ 14,532 __________ (1) Represents foreign currency translation adjustments.

Deposits and Borrowings

Deposits and Borrowings	9 Months Ended
	Sep. 30, 2017
Deposits and Borrowings [Abstract]
Deposits and Borrowings	NOTE 8—DEPOSITS AND BORROWINGS Deposits Our deposits, which are our largest source of funding for our assets and operations, consist of non-interest-bearing and interest-bearing deposits, which include checking accounts, money market deposit accounts, negotiable order of withdrawals, savings deposits and time deposits. Securitized and Unsecured Debt Obligations In addition to our deposits, which serve as our primary funding source, we use a variety of other funding sources including short-term borrowings, the issuance of senior and subordinated notes and other borrowings, and securitization transactions. In addition, we utilize FHLB advances, which are secured by certain portions of our loan and investment securities portfolios, for our funding needs. The securitized debt obligations are separately presented on our consolidated balance sheets as they represent obligations of consolidated securitization trusts, while federal funds purchased and securities loaned or sold under agreements to repurchase, senior and subordinated notes and other borrowings, including FHLB advances, are included in other debt on our consolidated balance sheets. Securitized Debt Obligations Our borrowings due to securitization investors decreased to $17.1 billion as of September 30, 2017 from $18.8 billion as of December 31, 2016 . During the first nine months of 2017 , we had $7.2 billion of maturities, partially offset by $3.0 billion of new issuances from our credit card loan securitization trust and $2.5 billion of securitized debt obligations assumed in the Cabela’s acquisition . Senior and Subordinated Notes We had $28.4 billion and $23.4 billion of senior and subordinated notes outstanding as of September 30, 2017 and December 31, 2016 , respectively. During the first nine months of 2017 , we issued $7.8 billion of long-term senior and subordinated debt comprised of $1.7 billion of floating-rate notes and $6.1 billion of fixed-rate notes. During the first nine months of 2017 , $2.8 billion of senior and subordinated notes matured. FHLB Advances and Other We have access to funding through the FHLB system and the Federal Reserve Discount Window. Our FHLB and Federal Reserve memberships require us to hold FHLB and Federal Reserve stock which totaled $1.7 billion and $1.9 billion as of September 30, 2017 and December 31, 2016 , respectively, and are included in other assets on our consolidated balance sheets. Our FHLB advances and lines of credit are secured by our investment securities, residential home loans, multifamily real estate loans, commercial real estate loans and HELOCs. Outstanding FHLB advances totaled $13.1 billion and $17.2 billion as of September 30, 2017 and December 2016 , respectively, substantially all of which represented long-term advances generally callable on either a monthly or a quarterly basis. Composition of Deposits, Short-Term Borrowings and Long-Term Debt The table below summarizes the components of our deposits, short-term borrowings and long-term debt as of September 30, 2017 and December 31, 2016 . Our total short-term borrowings consist of federal funds purchased and securities loaned or sold under agreements to repurchase. Our long-term debt consists of borrowings with an original contractual maturity of greater than one year. The carrying value presented below for these borrowings include unamortized debt premiums and discounts, net of debt issuance costs and fair value hedge accounting adjustments. Table 8.1 : Components of Deposits, Short-Term Borrowings and Long-Term Debt (Dollars in millions) September 30, December 31, Deposits: Non-interest-bearing deposits $ 26,106 $ 25,502 Interest-bearing deposits 212,956 211,266 Total deposits $ 239,062 $ 236,768 Short-term borrowings: Federal funds purchased and securities loaned or sold under agreements to repurchase $ 767 $ 992 Total short-term borrowings $ 767 $ 992 September 30, 2017 (Dollars in millions) Maturity Dates Interest Rates Weighted- Average Interest Rate Carrying Value December 31, Long-term debt: Securitized debt obligations (1) 2018 - 2025 1.33 - 2.75% 1.77 $ 17,087 $ 18,826 Senior and subordinated notes: (1) Fixed unsecured senior debt 2018 - 2027 1.50 - 4.75 2.69 20,815 17,546 Floating unsecured senior debt 2018 - 2023 1.99 - 2.46 2.19 3,047 1,353 Total unsecured senior debt 2.63 23,862 18,899 Fixed unsecured subordinated debt 2019 - 2026 3.38 - 8.80 4.09 4,558 4,532 Total senior and subordinated notes 28,420 23,431 Other long-term borrowings: FHLB advances 2017 - 2023 1.21 - 5.43 1.23 13,136 17,179 Capital lease obligations 2022 - 2035 2.50 - 12.86 5.75 48 32 Total other long-term borrowings 13,184 17,211 Total long-term debt $ 58,691 $ 59,468 Total short-term borrowings and long-term debt $ 59,458 $ 60,460 __________ (1) Carrying value includes fair value hedge accounting adjustments. Components of Interest Expense The following table displays interest expense attributable to short-term borrowings and long-term debt for the three and nine months ended September 30, 2017 and 2016 : Table 8.2 : Components of Interest Expense on Short-Term Borrowings and Long-Term Debt Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Short-term borrowings: Federal funds purchased and securities loaned or sold under agreements to repurchase $ 1 $ 0 $ 3 $ 2 Total short-term borrowings 1 0 3 2 Long-term debt: Securitized debt obligations (1) 85 56 236 151 Senior and subordinated notes (1) 194 121 522 338 Other long-term borrowings 30 34 65 84 Total long-term debt 309 211 823 573 Total interest expense on short-term borrowings and long-term debt $ 310 $ 211 $ 826 $ 575 _ _________ (1) Interest expense includes the impact from qualifying hedge accounting relationships.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	NOTE 9—DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Use of Derivatives We manage asset and liability positions and market risk exposure and limits in accordance with market risk management policies that are approved by our Board of Directors. Our primary market risks stem from the impact on our earnings and economic value of equity from changes in interest rates and, to a lesser extent, changes in foreign exchange rates. We employ several techniques to manage our interest rate sensitivity, which include changing the duration and re-pricing characteristics of various assets and liabilities by using interest rate derivatives. Our current policies also include the use of derivatives to hedge exposures denominated in foreign currency so we may limit our earnings and capital ratio exposures to foreign exchange risk. We execute our derivative contracts in both the over-the-counter (“OTC”) and exchange-traded derivative markets. Under the Dodd-Frank Act, we are required to clear eligible derivative transactions through Central Counterparty Clearinghouses (“CCPs”) such as the Chicago Mercantile Exchange (“CME”) and Clearnet (“LCH”), which are often referred to as “central clearinghouses.” The majority of our derivatives are interest rate swaps. In addition, we may use a variety of other derivative instruments, including caps, floors, options, futures and forward contracts, to manage our interest rate and foreign exchange risks. We offer various interest rate, foreign exchange rate and commodity derivatives as an accommodation to our customers within our Commercial Banking business, and usually offset our exposure through derivative transactions with other counterparties. Derivatives Counterparty Credit Risk Derivative instruments contain an element of credit risk that arises from the potential failure of a counterparty to perform according to the terms of the contract. Our exposure to derivative counterparty credit risk, at any point in time, is represented by the fair value of derivatives in a gain position, or derivative asset position, assuming no recoveries of underlying collateral. To mitigate the risk of counterparty default, we enter into legally enforceable master netting agreements and collateral agreements, where possible, with certain derivative counterparties. We generally enter into these agreements on a bilateral basis with our counterparties. These bilateral agreements typically provide the right to offset exposures and require one counterparty to post collateral on derivative instruments in a net liability position to the other counterparty. Certain of these bilateral agreements include provisions requiring that our debt maintain a credit rating of investment grade or above by each of the major credit rating agencies. In the event of a downgrade of our debt credit rating below investment grade, some of our counterparties would have the right to terminate the derivative contract and close out the existing positions. We also clear certain OTC derivatives with central clearinghouses through futures commission merchants (“FCMs”) as part of the regulatory requirement. The use of the central clearinghouses and the FCMs reduces our bilateral counterparty credit exposures while it increases our credit exposures to CCPs and FCMs. We are required by CCPs to post initial and variation margin to mitigate the risk of non-payment through our FCMs. Our FCM agreements governing these derivative transactions generally include provisions that may require us to post more collateral or otherwise change terms in our agreements under certain circumstances. Effective January 3, 2017, the CME amended its rulebook to legally characterize variation margin cash payments for cleared OTC derivatives as a settlement of the position rather than collateral. We adopted this variation margin rule change in the second quarter of 2017. As a result, we began reducing the corresponding derivative assets and liabilities for CME-cleared OTC derivatives to reflect the settlement of these positions. Variation margin payments for LCH-cleared OTC derivatives continue to be characterized as collateral. We record counterparty credit risk valuation adjustments (“CVAs”) on our OTC derivative contracts to properly reflect the credit quality of the counterparty. We consider collateral and legally enforceable master netting agreements that mitigate our credit exposure to each counterparty in determining the counterparty credit risk valuation adjustment, which may be adjusted in future periods due to changes in the fair value of the derivative contracts, collateral and creditworthiness of the counterparty. We also record debit valuation adjustments (“DVAs”) to adjust the fair value of our derivative liabilities to reflect the impact of our own credit quality. We calculate this adjustment by comparing the spreads on our credit default swaps to the discount benchmark curve. Accounting for Derivatives Our derivatives are designated as either qualifying accounting hedges or free-standing derivatives. Qualifying accounting hedges are designated as fair value hedges, cash flow hedges or net investment hedges. Free-standing derivatives primarily consist of customer-accommodation derivatives and economic hedges that do not qualify for hedge accounting. • Fair Value Hedges: We designate derivatives as fair value hedges when they are used to manage our exposure to changes in the fair value of certain financial assets and liabilities, which fluctuate in value as a result of movements in interest rates. Changes in the fair value of derivatives designated as fair value hedges are recorded in earnings together with offsetting changes in the fair value of the hedged item and any resulting ineffectiveness. Our fair value hedges consist of interest rate swaps that are intended to modify our exposure to interest rate risk on various fixed-rate assets and liabilities. • Cash Flow Hedges: We designate derivatives as cash flow hedges when they are used to manage our exposure to variability in cash flows related to forecasted transactions. Changes in the fair value of derivatives designated as cash flow hedges are recorded as a component of AOCI, to the extent that the hedge relationships are effective, and amounts are reclassified from AOCI to earnings as the forecasted transactions impact earnings. To the extent that any ineffectiveness exists in the hedge relationships, the amounts are recorded in current period earnings. Our cash flow hedges use interest rate swaps and floors that are intended to hedge the variability in interest receipts or interest payments on some of our variable-rate assets or liabilities. We also enter into foreign currency forward derivative contracts to hedge our exposure to variability in cash flows related to intercompany borrowings denominated in foreign currency. • Net Investment Hedges: We use net investment hedges to manage the foreign currency exposure related to our net investments in foreign operations that have functional currencies other than the U.S. dollar. Changes in the fair value of net investment hedges are recorded in the translation adjustment component of AOCI, offsetting the translation gain or loss from those foreign operations. We execute net investment hedges using foreign exchange forward contracts to hedge the translation exposure of the net investment in our foreign operations. • Free-Standing Derivatives: We use free-standing derivatives to hedge the risk of changes in the fair value of residential MSRs, mortgage loan origination and purchase commitments and other interests held. We also categorize our customer accommodation derivatives and the related offsetting contracts as free-standing derivatives. Changes in the fair value of free-standing derivatives are recorded in earnings as a component of other non-interest income. Balance Sheet Presentation The following table summarizes the notional and fair values of our derivative instruments as of September 30, 2017 and December 31, 2016 , which are segregated by derivatives that are designated as accounting hedges and those that are not, and are further segregated by type of contract within those two categories. The total derivative assets and liabilities are adjusted on an aggregate basis to take into consideration the effects of legally enforceable master netting agreements and any associated cash collateral received or pledged. Table 9.1 : Derivative Assets and Liabilities at Fair Value September 30, 2017 December 31, 2016 Notional or Contractual Amount Derivative (1)(5) Notional or Contractual Amount Derivative (1) (Dollars in millions) Assets Liabilities Assets Liabilities Derivatives designated as accounting hedges: Interest rate contracts: Fair value hedges $ 51,645 $ 78 $ 79 $ 40,480 $ 295 $ 569 Cash flow hedges 65,700 30 96 50,400 151 287 Total interest rate contracts 117,345 108 175 90,880 446 856 Foreign exchange contracts: Cash flow hedges 5,833 10 228 5,620 108 9 Net investment hedges 2,849 0 172 2,396 163 0 Total foreign exchange contracts 8,682 10 400 8,016 271 9 Total derivatives designated as accounting hedges 126,027 118 575 98,896 717 865 Derivatives not designated as accounting hedges: Interest rate contracts covering: MSRs (2) 1,639 8 4 1,696 17 21 Customer accommodation 45,886 570 435 39,474 670 530 Other interest rate exposures (3) 4,914 49 12 1,105 33 8 Total interest rate contracts 52,439 627 451 42,275 720 559 Other contracts 1,053 0 5 1,767 57 14 Total derivatives not designated as accounting hedges 53,492 627 456 44,042 777 573 Total derivatives $ 179,519 $ 745 $ 1,031 $ 142,938 $ 1,494 $ 1,438 Less: netting adjustment (4) (236 ) (598 ) (539 ) (336 ) Total derivative assets/liabilities $ 509 $ 433 $ 955 $ 1,102 __________ (1) Derivative assets and liabilities presented above exclude valuation adjustments related to non-performance risk. As of September 30, 2017 and December 31, 2016 , the cumulative CVA balances were $4 million and $6 million , respectively, and the cumulative DVA balances were less than $1 million as of both September 30, 2017 and December 31, 2016 . (2) Includes interest rate swaps and to-be-announced contracts. (3) Includes mortgage-related derivatives. (4) Represents balance sheet netting of derivative assets and liabilities, and related payables and receivables for cash collateral held or placed with the same counterparty. See Table 9.2 for further information. (5) Reflects a reduction of derivative assets of $23 million and a reduction of derivative liabilities of $500 million on our consolidated balance sheets as of September 30, 2017 as a result of adoption of the CME variation margin rule change in the second quarter of 2017. Offsetting of Financial Assets and Liabilities Derivative contracts and repurchase agreements that we execute bilaterally in the OTC market are governed by enforceable master netting arrangements where we generally have the right to offset exposure with the same counterparty. Either counterparty can generally request to net settle all contracts through a single payment upon default on, or termination of, any one contract. We elect to offset the derivative assets and liabilities under netting arrangements for balance sheet presentation where a right of setoff exists. For derivative contracts entered into under master netting arrangements for which we have not been able to confirm the enforceability of the setoff rights, or those not subject to master netting arrangements, we do not offset our derivative positions for balance sheet presentation. We also maintain collateral agreements with certain derivative counterparties. For bilateral derivatives, we review our collateral positions on a daily basis and exchange collateral with our counterparties in accordance with standard International Swaps and Derivatives Association documentation and other related agreements. Agreements with certain bilateral counterparties require both parties to maintain collateral in the event the fair values of derivative instruments exceed established exposure thresholds. For centrally cleared derivatives, we are subject to initial margin and daily variation margin posting with the central clearinghouses. Acceptable types of collateral are typically in the form of cash or high quality liquid securities. The exchange of collateral is dependent upon the fair value of the derivative instruments as well as the fair value of the pledged collateral. When valuing collateral, an estimate of the variation in price and liquidity over time is subtracted in the form of a “haircut” to discount the value of the collateral pledged. The following table presents as of September 30, 2017 and December 31, 2016 the gross and net fair values of our derivative assets and liabilities and repurchase agreements, as well as the related offsetting amounts permitted under U.S. GAAP. The table also includes cash and non-cash collateral received or pledged associated with such arrangements. The collateral amounts shown are limited to the extent of the related net derivative fair values or outstanding balances, thus instances of over-collateralization are not shown. Table 9.2 : Offsetting of Financial Assets and Financial Liabilities Gross Amounts Gross Amounts Offset in the Balance Sheet Net Amounts as Recognized Securities Collateral Held Under Master Netting Agreements (Dollars in millions) Financial Instruments Cash Collateral Received Net Exposure As of September 30, 2017 Derivatives assets (1)(2) $ 745 $ (187 ) $ (49 ) $ 509 $ 0 $ 509 As of December 31, 2016 Derivatives assets (1)(2) 1,494 (152 ) (387 ) 955 (11 ) 944 Gross Amounts Gross Amounts Offset in the Balance Sheet Net Amounts as Recognized Securities Collateral Pledged Under Master Netting Agreements (Dollars in millions) Financial Instruments Cash Collateral Pledged Net Exposure As of September 30, 2017 Derivatives liabilities (1)(2) $ 1,031 $ (187 ) $ (411 ) $ 433 $ 0 $ 433 Repurchase agreements (3) 767 0 0 767 (767 ) 0 As of December 31, 2016 Derivatives liabilities (1)(2) 1,438 (152 ) (184 ) 1,102 0 1,102 Repurchase agreements 992 0 0 992 (992 ) 0 __________ (1) Reflects a reduction of derivative assets of $23 million and a reduction of derivative liabilities of $500 million on our consolidated balance sheets as of September 30, 2017 as a result of adoption of the CME variation margin rule change in the second quarter of 2017. (2) We received cash collateral from derivative counterparties totaling $51 million and $448 million as of September 30, 2017 and December 31, 2016 , respectively. We also received securities from derivative counterparties with a fair value of $1 million and $16 million as of September 30, 2017 and December 31, 2016 , respectively, which we have the ability to re-pledge. We posted $914 million and $1.5 billion of cash collateral as of September 30, 2017 and December 31, 2016 , respectively. (3) Represents customer repurchase agreements that mature the next business day. As of September 30, 2017 , we pledged collateral with a fair value of $782 million under these customer repurchase agreements, which were primarily agency RMBS securities. Income Statement Presentation and AOCI Fair Value Hedges and Free-Standing Derivatives The net gains (losses) recognized in earnings related to derivatives in fair value hedging relationships and free-standing derivatives are presented below for the three and nine months ended September 30, 2017 and 2016 . Table 9.3 : Gains and Losses on Fair Value Hedges and Free-Standing Derivatives Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Derivatives designated as accounting hedges: (1)(2) Fair value interest rate contracts: Gains (losses) recognized in earnings on derivatives $ (23 ) $ (219 ) $ 70 $ 171 Gains (losses) recognized in earnings on hedged items 19 220 (74 ) (147 ) Net fair value hedge ineffectiveness gains (losses) (4 ) 1 (4 ) 24 Derivatives not designated as accounting hedges: (1) Interest rate contracts covering: MSRs 1 3 4 21 Customer accommodation 11 10 27 22 Other interest rate exposures 24 26 45 57 Total interest rate contracts 36 39 76 100 Other contracts 0 0 0 (9 ) Total gains on derivatives not designated as accounting hedges 36 39 76 91 Net derivative gains recognized in earnings $ 32 $ 40 $ 72 $ 115 __________ (1) Amounts are recorded in our consolidated statements of income in other non-interest income. (2) The accrued interest income (expense) on fair value hedges is recorded in net interest income (expense) and is excluded from this table. Cash Flow and Net Investment Hedges The table below shows the net gains (losses) related to derivatives designated as cash flow hedges and net investment hedges for the three and nine months ended September 30, 2017 and 2016 . Table 9.4 : Gains and Losses on Derivatives Designated as Cash Flow Hedges and Net Investment Hedges Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Gains (losses) recorded in AOCI: Cash flow hedges: Interest rate contracts $ (2 ) $ (94 ) $ 37 $ 524 Foreign exchange contracts 5 1 14 1 Subtotal 3 (93 ) 51 525 Net investment hedges: Foreign exchange contracts (49 ) 39 (129 ) 202 Net derivatives gains (losses) recognized in AOCI $ (46 ) $ (54 ) $ (78 ) $ 727 Gains (losses) recorded in earnings: Cash flow hedges: Gains (losses) reclassified from AOCI into earnings: Interest rate contracts (1) $ 15 $ 48 $ 76 $ 146 Foreign exchange contracts (2) 5 1 13 1 Subtotal 20 49 89 147 Gains (losses) recognized in earnings due to ineffectiveness: Interest rate contracts (2) 0 0 3 3 Net derivative gains (losses) recognized in earnings $ 20 $ 49 $ 92 $ 150 __________ (1) Amounts reclassified are recorded in our consolidated statements of income in interest income or interest expense. (2) Amounts are recorded in our consolidated statements of income in other non-interest income or other interest income. In the next 12 months, we expect to reclassify to earnings net after-tax gains of $35 million currently recorded in AOCI as of September 30, 2017 . These amounts will offset the cash flows associated with the hedged forecasted transactions. The maximum length of time over which forecasted transactions were hedged was approximately six years as of September 30, 2017 . The amount we expect to reclassify into earnings may change as a result of changes in market conditions and ongoing actions taken as part of our overall risk management strategy.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Stockholders' Equity	NOTE 10—STOCKHOLDERS’ EQUITY Preferred Stock The following table summarizes the Company’s preferred stock issued and outstanding as of September 30, 2017 and December 31, 2016 . Table 10.1 : Preferred Stock Issued and Outstanding (1) Redeemable by Issuer Beginning Per Annum Dividend Rate Dividend Frequency Liquidation Preference per Share Carrying Value (in millions) Series Description Issuance Date Total Shares Outstanding September 30, 2017 December 31, 2016 Series B 6.00% Non-Cumulative August 20, 2012 September 1, 2017 6.00% Quarterly $ 1,000 875,000 $ 853 $ 853 Series C 6.25% Non-Cumulative June 12, 2014 September 1, 2019 6.25 Quarterly 1,000 500,000 484 484 Series D 6.70% Non-Cumulative October 31, 2014 December 1, 2019 6.70 Quarterly 1,000 500,000 485 485 Series E Fixed-to-Floating Rate Non-Cumulative May 14, 2015 June 1, 2020 5.55% through 5/31/2020; Semi-Annually through 5/31/2020; Quarterly thereafter 1,000 1,000,000 988 988 Series F 6.20% Non-Cumulative August 24, 2015 December 1, 2020 6.20 Quarterly 1,000 500,000 484 484 Series G 5.20% Non-Cumulative July 29, 2016 December 1, 2021 5.20 Quarterly 1,000 600,000 583 583 Series H 6.00% Non-Cumulative November 29, 2016 December 1, 2021 6.00 Quarterly 1,000 500,000 483 483 Total $ 4,360 $ 4,360 __________ (1) Except for Series E, ownership is held in the form of depositary shares, each representing a 1/40th interest in a share of fixed-rate non-cumulative perpetual preferred stock. Accumulated Other Comprehensive Income The following table presents the changes in AOCI by component for the three and nine months ended September 30, 2017 and 2016 . Table 10.2 : Accumulated Other Comprehensive Income Three Months Ended September 30, 2017 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of June 30, 2017 $ 181 $ (575 ) $ (99 ) $ (174 ) $ (16 ) $ (683 ) Other comprehensive income before reclassifications 52 0 3 38 5 98 Amounts reclassified from AOCI into earnings (42 ) 26 (20 ) 0 (1 ) (37 ) Net other comprehensive income (loss) 10 26 (17 ) 38 4 61 AOCI as of September 30, 2017 $ 191 $ (549 ) $ (116 ) $ (136 ) $ (12 ) $ (622 ) Nine Months Ended September 30, 2017 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of December 31, 2016 $ (4 ) $ (621 ) $ (78 ) $ (222 ) $ (24 ) $ (949 ) Other comprehensive income before reclassifications 235 0 51 86 16 388 Amounts reclassified from AOCI into earnings (40 ) 72 (89 ) 0 (4 ) (61 ) Net other comprehensive income (loss) 195 72 (38 ) 86 12 327 AOCI as of September 30, 2017 $ 191 $ (549 ) $ (116 ) $ (136 ) $ (12 ) $ (622 ) Three Months Ended September 30, 2016 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of June 30, 2016 $ 485 $ (679 ) $ 640 $ (172 ) $ (33 ) $ 241 Other comprehensive income (loss) before reclassifications 10 (1 ) (93 ) (20 ) 6 (98 ) Amounts reclassified from AOCI into earnings 0 29 (49 ) 0 (2 ) (22 ) Net other comprehensive income (loss) 10 28 (142 ) (20 ) 4 (120 ) AOCI as of September 30, 2016 $ 495 $ (651 ) $ 498 $ (192 ) $ (29 ) $ 121 Nine Months Ended September 30, 2016 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of December 31, 2015 $ 162 $ (725 ) $ 120 $ (143 ) $ (30 ) $ (616 ) Other comprehensive income (loss) before reclassifications 329 (1 ) 525 (49 ) 1 805 Amounts reclassified from AOCI into earnings 4 75 (147 ) 0 0 (68 ) Net other comprehensive income (loss) 333 74 378 (49 ) 1 737 AOCI as of September 30, 2016 $ 495 $ (651 ) $ 498 $ (192 ) $ (29 ) $ 121 __________ (1) The amortization of unrealized holding gains or losses reported in AOCI for securities held to maturity will be offset by the amortization of premium or discount created from the transfer of securities from available for sale to held to maturity, which occurred at fair value. These unrealized gains or losses will be amortized over the remaining life of the security with no expected impact on future net income. (2) Includes the impact from hedging instruments designated as net investment hedges. The following table presents the impacts on net income of amounts reclassified from each component of AOCI for the three and nine months ended September 30, 2017 and 2016 . Table 10.3 : Reclassifications from AOCI Amount Reclassified from AOCI (Dollars in millions) Three Months Ended September 30, Nine Months Ended September 30, AOCI Components Affected Income Statement Line Item 2017 2016 2017 2016 Securities available for sale: Non-interest income $ 68 $ 1 $ 64 $ (6 ) Income tax provision (benefit) 26 1 24 (2 ) Net income (loss) 42 0 40 (4 ) Securities held to maturity: (1) Interest income (40 ) (46 ) (113 ) (119 ) Income tax provision (benefit) (14 ) (17 ) (41 ) (44 ) Net income (loss) (26 ) (29 ) (72 ) (75 ) Cash flow hedges: Interest rate contracts: Interest income 25 77 122 234 Foreign exchange contracts: Interest income 6 1 19 1 Non-interest income 1 0 1 (1 ) Income from continuing operations before income taxes 32 78 142 234 Income tax provision 12 29 53 87 Net income 20 49 89 147 Other: Various (pension and other) 3 2 7 0 Income tax provision 2 0 3 0 Net income 1 2 4 0 Total reclassifications $ 37 $ 22 $ 61 $ 68 __________ (1) The amortization of unrealized holding gains or losses reported in AOCI for securities held to maturity will be offset by the amortization of premium or discount created from the transfer of securities from available for sale to held to maturity, which occurred at fair value. These unrealized gains or losses will be amortized over the remaining life of the security with no expected impact on future net income. The table below summarizes other comprehensive income activity and the related tax impact for the three and nine months ended September 30, 2017 and 2016 . Table 10.4 : Other Comprehensive Income (Loss) Three Months Ended September 30, 2017 2016 (Dollars in millions) Before Tax Provision After Tax Before Tax Provision After Tax Other comprehensive income (loss): Net unrealized gains on securities available for sale $ 16 $ 6 $ 10 $ 17 $ 7 $ 10 Net changes in securities held to maturity 40 14 26 44 16 28 Net unrealized gains (losses) on cash flow hedges (29 ) (12 ) (17 ) (226 ) (84 ) (142 ) Foreign currency translation adjustments (1) 11 (27 ) 38 4 24 (20 ) Other 7 3 4 6 2 4 Other comprehensive income (loss) $ 45 $ (16 ) $ 61 $ (155 ) $ (35 ) $ (120 ) Nine Months Ended September 30, 2017 2016 (Dollars in millions) Before Tax Provision After Tax Before Tax Provision After Tax Other comprehensive income: Net unrealized gains on securities available for sale $ 299 $ 104 $ 195 $ 525 $ 192 $ 333 Net changes in securities held to maturity 113 41 72 118 44 74 Net unrealized gains (losses) on cash flow hedges (61 ) (23 ) (38 ) 601 223 378 Foreign currency translation adjustments (1) 12 (74 ) 86 70 119 (49 ) Other 19 7 12 1 0 1 Other comprehensive income $ 382 $ 55 $ 327 $ 1,315 $ 578 $ 737 __________ (1) Includes the impact from hedging instruments designated as net investment hedges.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	NOTE 11—EARNINGS PER COMMON SHARE The following table sets forth the computation of basic and diluted earnings per common share. Table 11.1 : Computation of Basic and Diluted Earnings per Common Share Three Months Ended September 30, Nine Months Ended September 30, (Dollars and shares in millions, except per share data) 2017 2016 2017 2016 Income from continuing operations, net of tax $ 1,137 $ 1,016 $ 2,979 $ 2,977 Income (loss) from discontinued operations, net of tax (30 ) (11 ) (26 ) (17 ) Net income 1,107 1,005 2,953 2,960 Dividends and undistributed earnings allocated to participating securities (1) (8 ) (6 ) (21 ) (18 ) Preferred stock dividends (52 ) (37 ) (185 ) (139 ) Net income available to common stockholders $ 1,047 $ 962 $ 2,747 $ 2,803 Total weighted-average basic shares outstanding 484.9 501.1 483.7 512.0 Effect of dilutive securities: Stock options 2.2 1.9 2.5 1.9 Other contingently issuable shares 1.2 1.3 1.2 1.3 Warrants (2) 0.7 1.6 0.7 1.6 Total effect of dilutive securities 4.1 4.8 4.4 4.8 Total weighted-average diluted shares outstanding 489.0 505.9 488.1 516.8 Basic earnings per common share: Net income from continuing operations $ 2.22 $ 1.94 $ 5.73 $ 5.50 Income (loss) from discontinued operations (0.06 ) (0.02 ) (0.05 ) (0.03 ) Net income per basic common share $ 2.16 $ 1.92 $ 5.68 $ 5.47 Diluted earnings per common share: (3) Net income from continuing operations $ 2.20 $ 1.92 $ 5.68 $ 5.45 Income (loss) from discontinued operations (0.06 ) (0.02 ) (0.05 ) (0.03 ) Net income per diluted common share $ 2.14 $ 1.90 $ 5.63 $ 5.42 __________ (1) Dividends and undistributed earnings allocated to participating securities includes undistributed earnings allocated to participating securities using the two-class method under the accounting guidance for computing earnings per share. (2) Represents warrants issued as part of the U.S. Department of Treasury’s Troubled Assets Relief Program (“TARP”). There were 1.4 million and 4.1 million warrants to purchase common stock outstanding as of September 30, 2017 and 2016 , respectively. (3) Excluded from the computation of diluted earnings per share were 304,000 shares related to options with an exercise price of $82.08 to $86.34 , and 279,000 shares related to options with exercise prices ranging from $82.08 to $86.34 for the three and nine months ended September 30, 2017 , respectively, and 2.0 million shares related to options with exercise prices ranging from $63.73 to $82.08 , and 2.3 million shares related to options with exercise prices ranging from $63.73 to $88.81 for the three and nine months ended September 30, 2016 , respectively, because their inclusion would be anti-dilutive.

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurement	NOTE 12—FAIR VALUE MEASUREMENT Fair value, also referred to as an exit price, is defined as the price that would be received for an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date . The fair value accounting guidance provides a three-level fair value hierarchy for classifying financial instruments. This hierarchy is based on the markets in which the assets or liabilities trade and whether the inputs to the valuation techniques used to measure fair value are observable or unobservable. The fair value measurement of a financial asset or liability is assigned a level based on the lowest level of any input that is significant to the fair value measurement in its entirety. The three levels of the fair value hierarchy are described below: Level 1: Valuation is based on quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2: Valuation is based on observable market-based inputs, other than quoted prices in active markets for identical assets or liabilities, quoted prices in markets that are not active, or models using inputs that are observable or can be corroborated by observable market data of substantially the full term of the assets or liabilities. Level 3: Valuation is generated from techniques that use significant assumptions not observable in the market. Valuation techniques include pricing models, discounted cash flow methodologies or similar techniques. The accounting guidance for fair value measurements requires that we maximize the use of observable inputs and minimize the use of unobservable inputs in determining fair value. The accounting guidance provides for the irrevocable option to elect, on a contract-by-contract basis, to measure certain financial assets and liabilities at fair value at inception of the contract and record any subsequent changes in fair value in earnings. We have not made any material fair value option elections as of or for the periods disclosed herein. The determination and classification of financial instruments in the fair value hierarchy is performed at the end of each reporting period. We consider all available information, including observable market data, indications of market liquidity and orderliness, and our understanding of the valuation techniques and significant inputs. For additional information on the valuation techniques used in estimating the fair value of our financial assets and liabilities on a recurring or nonrecurring basis and for estimating the fair value for financial instruments that are not recorded at fair value, see “Note 17—Fair Value Measurement” in our 2016 Form 10-K. Fair Value Governance and Control We have a governance framework and a number of key controls that are intended to ensure that our fair value measurements are appropriate and reliable. Our governance framework provides for independent oversight and segregation of duties. Our control processes include review and approval of new transaction types, price verification and review of valuation judgments, methods, models, process controls and results. Groups independent of our trading and investing functions participate in the review and validation process. Tasks performed by these groups include periodic verification of fair value measurements to determine if assigned fair values are reasonable, including comparing prices from third-party pricing services to other available market information. Our Fair Value Committee (“FVC”), which includes representation from business areas, Risk Management and Finance divisions, provides guidance and oversight to ensure an appropriate valuation control environment. The FVC regularly reviews and approves our fair valuations to ensure that our valuation practices are consistent with industry standards and adhere to regulatory and accounting guidance. We have a model policy, established by an independent Model Risk Office, which governs the validation of models and related supporting documentation to ensure the appropriate use of models for pricing and fair value measurements. The Model Risk Office validates all models and provides ongoing monitoring of their performance. The fair valuation governance process is set up in a manner that allows the Chairperson of the FVC to escalate valuation disputes that cannot be resolved by the FVC to a more senior committee called the Valuations Advisory Committee (“VAC”) for resolution. The VAC is chaired by the Chief Financial Officer and includes other members of senior management. The VAC is only required to convene to review escalated valuation disputes . Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table displays our assets and liabilities measured on our consolidated balance sheets at fair value on a recurring basis as of September 30, 2017 and December 31, 2016 . During the nine months ended September 30, 2017 , we had minimal movements between Levels 1 and 2. Table 12.1 : Assets and Liabilities Measured at Fair Value on a Recurring Basis September 30, 2017 Fair Value Measurements Using Netting Adjustments (1) (Dollars in millions) Level 1 Level 2 Level 3 Total Assets: Securities available for sale: U.S. Treasury securities $ 5,139 $ 0 $ 0 $ — $ 5,139 RMBS 0 27,718 520 — 28,238 CMBS 0 4,763 66 — 4,829 Other ABS 0 547 0 — 547 Other securities 292 688 9 — 989 Total securities available for sale 5,431 33,716 595 — 39,742 Other assets: Derivative assets (1)(2) 1 687 57 (236 ) 509 Other (3) 267 0 268 — 535 Total assets $ 5,699 $ 34,403 $ 920 $ (236 ) $ 40,786 Liabilities: Other liabilities: Derivative liabilities (1)(2) $ 3 $ 998 $ 30 $ (598 ) $ 433 Total liabilities $ 3 $ 998 $ 30 $ (598 ) $ 433 December 31, 2016 Fair Value Measurements Using Netting Adjustments (1) (Dollars in millions) Level 1 Level 2 Level 3 Total Assets: Securities available for sale: U.S. Treasury securities $ 5,065 $ 0 $ 0 $ — $ 5,065 RMBS 0 28,731 518 — 29,249 CMBS 0 4,937 51 — 4,988 Other ABS 0 714 0 — 714 Other securities 295 417 9 — 721 Total securities available for sale 5,360 34,799 578 — 40,737 Other assets: Derivative assets (1)(2) 7 1,440 47 (539 ) 955 Other (3) 219 0 281 — 500 Total assets $ 5,586 $ 36,239 $ 906 $ (539 ) $ 42,192 Liabilities: Other liabilities: Derivative liabilities (1)(2) $ 12 $ 1,397 $ 29 $ (336 ) $ 1,102 Total liabilities $ 12 $ 1,397 $ 29 $ (336 ) $ 1,102 __________ (1) Represents balance sheet netting of derivative assets and liabilities, and related payable and receivables for cash collateral held or placed with the same counterparty. See “Note 9—Derivative Instrument and Hedging Activities” for additional information. (2) Does not reflect $3 million and $5 million recognized as a net valuation allowance on derivative assets and liabilities for non-performance risk as of September 30, 2017 and December 31, 2016 , respectively. Non-performance risk is included in the derivative assets and liabilities which are part of other assets and liabilities on the consolidated balance sheets and offset through non-interest income in the consolidated statements of income. (3) Other includes consumer MSRs of $90 million and $80 million , retained interests in securitizat ions of $178 million an d $201 million and deferred compensation plan assets of $267 million and $219 million as of September 30, 2017 and December 31, 2016 , respectively. Level 3 Recurring Fair Val ue Rollforward The table below presents a reconciliation for all assets and liabilities measured and recognized at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2017 and 2016 . When assets and liabilities are transferred between levels, we recognize the transfer as of the end of the period. Table 12.2 : Level 3 Recurring Fair Value Rollforward Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Three Months Ended September 30, 2017 Total Gains (Losses) (Realized/Unrealized) Net Unrealized (3) (Dollars in millions) Balance, July 1, 2017 Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2017 Assets: Securities available for sale: RMBS $ 429 $ 65 $ (37 ) $ 0 $ (111 ) $ 0 $ (23 ) $ 222 $ (25 ) $ 520 $ 5 CMBS 17 0 0 50 0 0 (1 ) 0 0 66 0 Other securities 9 0 0 0 0 0 0 0 0 9 0 Total securities available for sale 455 65 (37 ) 50 (111 ) 0 (24 ) 222 (25 ) 595 5 Other assets: Derivative assets (4) 57 (2 ) 0 0 0 25 (20 ) 0 (3 ) 57 (2 ) Consumer MSRs 85 1 0 0 0 6 (2 ) 0 0 90 1 Retained interest in securitizations 188 (10 ) 0 0 0 0 0 0 0 178 (10 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (32 ) $ 0 $ 0 $ 0 $ 0 $ (7 ) $ 7 $ 0 $ 2 $ (30 ) $ 0 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Three Months Ended September 30, 2016 Total Gains (Losses) (Realized/Unrealized) Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held as of September 30, 2016 (3) (Dollars in millions) Balance, Included (1) Included in OCI Purchases Sales Issuances Settlements Transfers (2) Transfers (2) Balance, September 30, 2016 Assets: Securities available for sale: RMBS $ 555 $ 9 $ 11 $ 51 $ 0 $ 0 $ (27 ) $ 122 $ (137 ) $ 584 $ 8 CMBS 128 0 0 78 0 0 (2 ) 0 (106 ) 98 0 Other ABS 30 0 0 0 0 0 0 0 (30 ) 0 0 Other securities 19 (9 ) 0 6 0 0 (7 ) 0 0 9 0 Total securities available for sale 732 0 11 135 0 0 (36 ) 122 (273 ) 691 8 Other assets: Derivative assets (4) 85 0 0 0 0 18 (27 ) 0 (2 ) 74 0 Consumer MSRs 53 3 0 0 0 7 (1 ) 0 0 62 3 Retained interest in securitizations 203 2 0 0 0 0 0 0 0 205 2 Liabilities: Other liabilities: Derivative liabilities (4) $ (67 ) $ 1 $ 0 $ 0 $ 0 $ (1 ) $ 22 $ 0 $ 1 $ (44 ) $ 1 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Nine Months Ended September 30, 2017 Total Gains (Losses) (Realized/Unrealized) Net Unrealized (3) (Dollars in millions) Balance, January 1, 2017 Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2017 Assets: Securities available for sale: RMBS $ 518 $ 82 $ (19 ) $ 0 $ (116 ) $ 0 $ (69 ) $ 434 $ (310 ) $ 520 $ 17 CMBS 51 0 0 110 0 0 (3 ) 0 (92 ) 66 0 Other securities 9 0 0 0 0 0 0 0 0 9 0 Total securities available for sale 578 82 (19 ) 110 (116 ) 0 (72 ) 434 (402 ) 595 17 Other assets: Derivative assets (4) 47 1 0 0 0 65 (45 ) 0 (11 ) 57 1 Consumer MSRs 80 (3 ) 0 0 0 18 (5 ) 0 0 90 (3 ) Retained interest in securitizations 201 (23 ) 0 0 0 0 0 0 0 178 (23 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (29 ) $ (2 ) $ 0 $ 0 $ 0 $ (20 ) $ 17 $ 0 $ 4 $ (30 ) $ (2 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Nine Months Ended September 30, 2016 Total Gains (Losses) (Realized/Unrealized) Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held as of September 30, 2016 (3) (Dollars in millions) Balance, Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2016 Assets: Securities available for sale: RMBS $ 504 $ 22 $ 17 $ 110 $ 0 $ 0 $ (75 ) $ 329 $ (323 ) $ 584 $ 22 CMBS 97 0 2 234 0 0 (12 ) 64 (287 ) 98 0 Other ABS 0 0 0 30 0 0 0 0 (30 ) 0 0 Other securities 14 (9 ) 0 14 0 0 (10 ) 0 0 9 0 Total securities available for sale 615 13 19 388 0 0 (97 ) 393 (640 ) 691 22 Other assets: Derivative assets (4) 57 28 0 0 0 60 (53 ) 0 (18 ) 74 28 Consumer MSRs 68 (17 ) 0 0 0 15 (4 ) 0 0 62 (17 ) Retained interest in securitizations 211 (6 ) 0 0 0 0 0 0 0 205 (6 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (27 ) $ (28 ) $ 0 $ 0 $ 0 $ (32 ) $ 35 $ 0 $ 8 $ (44 ) $ (28 ) __________ (1) Gains (losses) related to Level 3 Consumer MSRs, derivative assets and derivative liabilities, and retained interests in securitizations are reported in other non-interest income, which is a component of non-interest income, in our consolidated statements of income. (2) During the three and nine months ended September 30, 2017 and 2016 , the transfers into Level 3 were primarily driven by the usage of unobservable assumptions in the pricing of these securities as evidenced by wider pricing variations among pricing vendors. Transfers out of Level 3 were primarily driven by the usage of assumptions corroborated by market observable information as evidenced by tighter pricing among multiple pricing sources. (3) The amount presented for unrealized gains (losses) for assets still held as of the reporting date primarily represents impairments of securities available for sale, accretion on certain fixed maturity securities, changes in fair value of derivative instruments and mortgage servicing rights transactions. (4) All Level 3 derivative assets and liabilities are presented on a gross basis and are not reduced by the impact of legally enforceable master netting agreements that allow us to net positive and negative positions and the related payables and receivables for cash collateral held or placed with the same counterparty. Significant Level 3 Fair Value Asset and Liability Input Sensitivity Changes in unobservable inputs may have a significant impact on fair value. Certain of these unobservable inputs will, in isolation, have a directionally consistent impact on the fair value of the instrument for a given change in that input. Alternatively, the fair value of the instrument may move in an opposite direction for a given change in another input. In general, an increase in the discount rate, default rates, loss severity and credit spreads, in isolation, would result in a decrease in the fair value measurement. In addition, an increase in default rates would generally be accompanied by a decrease in recovery rates, slower prepayment rates and an increase in liquidity spreads. Techniques and Inputs for Level 3 Fair Value Measurements The following table presents the significant unobservable inputs used to determine the fair values of our Level 3 financial instruments on a recurring basis. We utilize multiple third-party pricing services to obtain fair value for our securities. Several of our third-party pricing services are only able to provide unobservable input information for a limited number of securities due to software licensing restrictions. Other third-party pricing services are able to provide unobservable input information for all securities for which they provide a valuation. As a result, the unobservable input information for the securities available for sale presented below represents a composite summary of all information we are able to obtain. The unobservable input information for all other Level 3 financial instruments is based on the assumptions used in our internal valuation models. Table 12.3 : Quantitative Information about Level 3 Fair Value Measurements Quantitative Information about Level 3 Fair Value Measurements (Dollars in millions) Fair Value at September 30, Significant Valuation Techniques Significant Unobservable Inputs Range Weighted Average Assets: Securities available for sale: RMBS $ 520 Discounted cash flows (3rd party pricing) Yield 2-9% 4% CMBS 66 Discounted cash flows (3rd party pricing) Yield 2-3% 2% Other securities 9 Discounted cash flows Yield 2% 2% Other assets: Derivative assets (1) 57 Discounted cash flows Swap rates 2% 2% Consumer MSRs 90 Discounted cash flows Total prepayment rate 7-21% 15% Retained interests in securitization (2) 178 Discounted cash flows Life of receivables (months) 2-87 N/A Liabilities: Derivative liabilities (1) $ 30 Discounted cash flows Swap rates 2% 2% Quantitative Information about Level 3 Fair Value Measurements (Dollars in millions) Fair Value at December 31, 2016 Significant Valuation Techniques Significant Unobservable Inputs Range Weighted Average Assets: Securities available for sale: RMBS $ 518 Discounted cash flows (3rd party pricing) Yield 0-15% 5% CMBS 51 Discounted cash flows (3rd party pricing) Yield 2% 2% Other securities 9 Discounted cash flows Yield 1-2% 1% Other assets: Derivative assets (1) 47 Discounted cash flows Swap rates 2% 2% Consumer MSRs 80 Discounted cash flows Total prepayment rate 8-20% 15% Retained interests in securitization (2) 201 Discounted cash flows Life of receivables (months) Voluntary prepayment rate 6-87 N/A Liabilities: Derivative liabilities (1) $ 29 Discounted cash flows Swap rates 2% 2% __________ (1) All Level 3 derivative assets and liabilities are presented on a gross basis and are not reduced by the impact of legally enforceable master netting agreements that allow us to net positive and negative positions and the related payables and receivables for cash collateral held or placed with the same counterparty. (2) Due to the nature of the various mortgage securitization structures in which we have retained interests, it is not meaningful to present a consolidated weighted average for the significant unobservable inputs. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis We are required to measure and recognize certain assets at fair value on a nonrecurring basis on the consolidated balance sheets. These assets are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, from the application of lower of cost or fair value accounting or when we evaluate for impairment). The following table presents the carrying value of the assets measured at fair value on a nonrecurring basis and still held as of September 30, 2017 and December 31, 2016 , and for which a nonrecurring fair value measurement was recorded during the nine and twelve months then ended: Table 12.4 : Nonrecurring Fair Value Measurements September 30, 2017 Estimated Fair Value Hierarchy Total (Dollars in millions) Level 2 Level 3 Loans held for investment $ 0 $ 563 $ 563 Loans held for sale 773 2 775 Other assets (1) 0 29 29 Total $ 773 $ 594 $ 1,367 December 31, 2016 Estimated Fair Value Hierarchy Total (Dollars in millions) Level 2 Level 3 Loans held for investment $ 0 $ 587 $ 587 Loans held for sale 157 0 157 Other assets (1) 0 83 83 Total $ 157 $ 670 $ 827 __________ (1) Other assets includes foreclosed property and repossessed assets of $22 million and long-lived assets held for sale of $7 million as of September 30, 2017 , compared to foreclosed property and repossessed assets of $43 million and long-lived assets held for sale of $40 million as of December 31, 2016 . In the above table, loans held for investment primarily include nonperforming loans for which specific reserves or charge-offs have been recognized. These loans are classified as Level 3, as they are valued based in part on the estimated fair value of the underlying collateral and the non-recoverable rate, which is considered to be a significant unobservable input. Collateral fair value sources include the appraisal value obtained from independent appraisers, broker pricing opinions or other available market information. The non-recoverable rate ranged from 0% to 17% , with a weighted average of 12% , and from 0% to 73% , with a weighted average of 16% , as of September 30, 2017 and December 31, 2016 , respectively. The fair value of the loans held for sale and the other assets classified as Level 3 is determined based on appraisal value or listing price which involves significant judgment; the significant unobservable inputs and related quantitative information are not meaningful to disclose as they vary significantly across properties and collateral. The following table presents total nonrecurring fair value measurements for the period, included in earnings, attributable to the change in fair value relating to assets that are still held at September 30, 2017 and 2016 . Table 12.5 : Nonrecurring Fair Value Measurements Included in Earnings Total Gains (Losses) Nine Months Ended September 30, (Dollars in millions) 2017 2016 Loans held for investment $ (237 ) $ (142 ) Loans held for sale (5 ) 0 Other assets (1) (7 ) (15 ) Total $ (249 ) $ (157 ) __________ (1) Other assets includes losses related to foreclosed property, repossessed assets and long-lived assets held for sale. Fair Value of Financial Instruments The following table presents the carrying value and estimated fair value, including the level within the fair value hierarchy, of our financial instruments that are not measured at fair value on a recurring basis on our consolidated balance sheets as of September 30, 2017 and December 31, 2016 . Table 12.6 : Fair Value of Financial Instruments September 30, 2017 Carrying Value Estimated Fair Value Estimated Fair Value Hierarchy (Dollars in millions) Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 8,484 $ 8,484 $ 4,154 $ 4,330 $ 0 Restricted cash for securitization investors 304 304 304 0 0 Securities held to maturity 28,650 29,327 199 29,122 6 Net loans held for investment 245,004 249,622 0 0 249,622 Loans held for sale 1,566 1,580 0 1,578 2 Interest receivable 1,426 1,426 0 1,426 0 Other investments (1) 1,803 1,804 0 1,793 11 Financial liabilities: Deposits $ 239,062 $ 241,634 $ 26,106 $ 215,528 $ 0 Securitized debt obligations 17,087 17,196 0 17,196 0 Senior and subordinated notes 28,420 29,004 0 29,004 0 Federal funds purchased and securities loaned or sold under agreements to repurchase 767 767 0 767 0 Other borrowings (2) 13,136 13,137 0 13,137 0 Interest payable 301 301 0 301 0 December 31, 2016 Carrying Value Estimated Fair Value Estimated Fair Value Hierarchy (Dollars in millions) Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 9,976 $ 9,976 $ 4,185 $ 5,791 $ 0 Restricted cash for securitization investors 2,517 2,517 2,517 0 0 Securities held to maturity 25,712 26,196 199 25,962 35 Net loans held for investment 239,083 242,935 0 0 242,935 Loans held for sale 1,043 1,038 0 1,038 0 Interest receivable 1,351 1,351 0 1,351 0 Other investments (1) 2,029 2,029 0 2,020 9 Financial liabilities: Deposits $ 236,768 $ 237,082 $ 25,502 $ 211,580 $ 0 Securitized debt obligations 18,826 18,920 0 18,920 0 Senior and subordinated notes 23,431 23,774 0 23,774 0 Federal funds purchased and securities loaned or sold under agreements to repurchase 992 992 0 992 0 Other borrowings 17,211 17,180 0 17,180 0 Interest payable 327 327 0 327 0 __________ (1) Other investments includes FHLB, Federal Reserve stock and cost method investments. These investments are included in other assets on our consolidated balance sheets. (2) Other borrowings exclude capital lease obligations.

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Business Segments	NOTE 13—BUSINESS SEGMENTS Our principal operations are currently organized into three major business segments, which are defined based on the products and services provided or the type of customer served: Credit Card, Consumer Banking and Commercial Banking. The operations of acquired businesses have been integrated into our existing business segments. Certain activities that are not part of a segment, such as management of our corporate investment portfolio and asset/liability management by our centralized Corporate Treasury group, are included in the Other category. Basis of Presentation We report the results of each of our business segments on a continuing operations basis. See “ Note 2—Discontinued Operations ” for a discussion of our discontinued operations. The results of our individual businesses reflect the manner in which management evaluates performance and makes decisions about funding our operations and allocating resources. Business Segment Reporting Methodology The results of our business segments are intended to present each segment as if it were a stand-alone business. Our internal management and reporting process used to derive our segment results employs various allocation methodologies, including funds transfer pricing, to assign certain balance sheet assets, deposits and other liabilities and their related revenue and expenses directly or indirectly attributable to each business segment. Our funds transfer pricing process provides a funds credit for sources of funds, such as deposits generated by our Consumer Banking and Commercial Banking businesses, and a funds charge for the use of funds by each segment. Due to the integrated nature of our business segments, estimates and judgments have been made in allocating certain revenue and expense items. Transactions between segments are based on specific criteria or approximate third-party rates. We regularly assess the assumptions, methodologies and reporting classifications used for segment reporting, which may result in the implementation of refinements or changes in future periods. We provide additional information on the allocation methodologies used to derive our business segment results in “Note 18—Business Segments” in our 2016 Form 10-K. Segment Results and Reconciliation We may periodically change our business segments or reclassify business segment results based on modifications to our management reporting methodologies or changes in organizational alignment. The following tables present our business segment results for the three and nine months ended September 30, 2017 and 2016 , selected balance sheet data as of September 30, 2017 and 2016 , and a reconciliation of our total business segment results to our reported consolidated income from continuing operations, loans held for investment and deposits. Table 13.1 : Segment Results and Reconciliation Three Months Ended September 30, 2017 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 3,440 $ 1,649 $ 560 $ 51 $ 5,700 Non-interest income 865 192 179 49 1,285 Total net revenue 4,305 1,841 739 100 6,985 Provision (benefit) for credit losses 1,466 293 63 11 1,833 Non-interest expense 1,961 1,051 394 161 3,567 Income (loss) from continuing operations before income taxes 878 497 282 (72 ) 1,585 Income tax provision (benefit) 306 181 103 (142 ) 448 Income from continuing operations, net of tax $ 572 $ 316 $ 179 $ 70 $ 1,137 Loans held for investment $ 109,130 $ 75,564 $ 67,670 $ 58 $ 252,422 Deposits 0 184,719 32,783 21,560 239,062 Three Months Ended September 30, 2016 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 3,204 $ 1,472 $ 555 $ 46 $ 5,277 Non-interest income 825 201 156 2 1,184 Total net revenue 4,029 1,673 711 48 6,461 Provision (benefit) for credit losses 1,272 256 61 (1 ) 1,588 Non-interest expense 1,884 1,034 349 94 3,361 Income (loss) from continuing operations before income taxes 873 383 301 (45 ) 1,512 Income tax provision (benefit) 318 139 110 (71 ) 496 Income from continuing operations, net of tax $ 555 $ 244 $ 191 $ 26 $ 1,016 Loans held for investment $ 99,201 $ 72,285 $ 66,457 $ 76 $ 238,019 Deposits 0 178,793 33,611 13,577 225,981 Nine Months Ended September 30, 2017 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 10,080 $ 4,744 $ 1,695 $ 128 $ 16,647 Non-interest income 2,478 570 520 9 3,577 Total net revenue 12,558 5,314 2,215 137 20,224 Provision (benefit) for credit losses 4,580 840 201 4 5,625 Non-interest expense 5,808 3,152 1,166 289 10,415 Income (loss) from continuing operations before income taxes 2,170 1,322 848 (156 ) 4,184 Income tax provision (benefit) 774 482 310 (361 ) 1,205 Income from continuing operations, net of tax $ 1,396 $ 840 $ 538 $ 205 $ 2,979 Loans held for investment $ 109,130 $ 75,564 $ 67,670 $ 58 $ 252,422 Deposits 0 184,719 32,783 21,560 239,062 Nine Months Ended September 30, 2016 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 9,282 $ 4,331 $ 1,651 $ 162 $ 15,426 Non-interest income 2,531 567 403 8 3,509 Total net revenue 11,813 4,898 2,054 170 18,935 Provision (benefit) for credit losses 3,604 690 417 (4 ) 4,707 Non-interest expense 5,630 3,030 1,014 205 9,879 Income (loss) from continuing operations before income taxes 2,579 1,178 623 (31 ) 4,349 Income tax provision (benefit) 931 428 227 (214 ) 1,372 Income from continuing operations, net of tax $ 1,648 $ 750 $ 396 $ 183 $ 2,977 Loans held for investment $ 99,201 $ 72,285 $ 66,457 $ 76 $ 238,019 Deposits 0 178,793 33,611 13,577 225,981 __________ (1) Some of our tax-related commercial investments generate tax-exempt income or tax credits. Accordingly, we make certain reclassifications within our Commercial Banking business results to present revenues and yields on a taxable-equivalent basis, calculated assuming an effective tax rate approximately equal to our federal statutory tax rate of 35% with offsetting reclassifications to the Other category.

Commitments, Contingencies, Gua

Commitments, Contingencies, Guarantees, and Others	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies, Guarantees and Others	NOTE 14—COMMITMENTS, CONTINGENCIES, GUARANTEES AND OTHERS Commitments to Lend Our unfunded lending commitments primarily consist of credit card lines, loan commitments to customers of both our Commercial Banking and Consumer Banking businesses, as well as standby and commercial letters of credit. These commitments, other than credit card lines, are legally binding conditional agreements that have fixed expirations or termination dates and specified interest rates and purposes. The contractual amount of these commitments represents the maximum possible credit risk to us should the counterparty draw upon the commitment. We generally manage the potential risk of unfunded lending commitments by limiting the total amount of arrangements, monitoring the size and maturity structure of these portfolios and applying the same credit standards for all of our credit activities. For unused credit card lines, we have not experienced and do not anticipate that all of our customers will access their entire available line at any given point in time. Commitments to extend credit other than credit card lines generally require customers to maintain certain credit standards. Collateral requirements and loan-to-value (“LTV”) ratios are the same as those for funded transactions and are established based on management’s credit assessment of the customer. These commitments may expire without being drawn upon; therefore, the total commitment amount does not necessarily represent future funding requirements. We also issue letters of credit, such as financial standby, performance standby and commercial letters of credit, to meet the financing needs of our customers. Standby letters of credit are conditional commitments issued by us to guarantee the performance of a customer to a third party in a borrowing arrangement. Commercial letters of credit are short-term commitments issued primarily to facilitate trade finance activities for customers and are generally collateralized by the goods being shipped to the client. These collateral requirements are similar to those for funded transactions and are established based on management’s credit assessment of the customer. Management conducts regular reviews of all outstanding letters of credit and the results of these reviews are considered in assessing the adequacy of our allowance for loan and lease losses. The following table presents contractual amount and carrying value of our unfunded lending commitments as of September 30, 2017 and December 31, 2016 . The carrying value represents our reserve and deferred revenue on legally binding commitments. Table 14.1 : Unfunded Lending Commitments: Contractual Amount and Carrying Value Contractual Amount Carrying Value (Dollars in millions) September 30, December 31, September 30, December 31, Standby letter of credit and commercial letter of credit (1) $ 2,074 $ 1,936 $ 39 $ 42 Credit card lines 354,155 312,864 N/A N/A Other loan commitments (2) 30,498 28,402 92 98 Total unfunded lending commitments $ 386,727 $ 343,202 $ 131 $ 140 __________ (1) These financial guarantees have expiration dates ranging from 2017 to 2025 as of September 30, 2017 . (2) Includes $898 million and $699 million of advised lines of credit as of September 30, 2017 and December 31, 2016 , respectively. Loss Sharing Agreements and Other Obligations Within our Commercial Banking business, we originate multifamily commercial real estate loans with the intent to sell them to the GSEs. We enter into loss sharing agreements with the GSEs upon the sale of the loans. At inception, we record a liability representing the fair value of our obligation which is subsequently amortized as we are released from risk of payment under the loss sharing agreement. If payment under the loss sharing agreement becomes probable and estimable, an additional liability may be recorded on the consolidated balance sheets and a non-interest expense may be recognized in the consolidated statements of income. The amount of liability recognized on our consolidated balance sheets for our loss sharing agreements was $52 million and $48 million as of September 30, 2017 and December 31, 2016 , respectively. As of September 30, 2017, in certain securitizations associated with the discontinued manufactured housing operations of GreenPoint Credit, LLC, the third-party servicer had an obligation to exercise mandatory clean-up calls. In the event the third-party servicer could not fulfill its obligation to exercise these clean-up calls, the obligation would revert to us. The amount of loan receivables and other assets subject to these clean-up calls was approximately $391 million as of September 30, 2017. Based on our current projections, we expect these securitizations to reach their individual clean-up call thresholds beginning in 2017 and continuing through 2019. According to current information and estimates, we also expect the fair value of the loan receivables and other assets to be less than the contractual amount required to exercise the clean-up calls. We have monitored the underlying assets for trends in delinquencies and related losses and reviewed the third-party servicer’s financial strength. As of September 30, 2017 , we had a liability of $61 million associated with these clean-up call obligations. On October 10, 2017, we entered into an agreement with the third-party servicer under which we assumed the mandatory obligation to exercise the remaining clean-up calls as they become due on certain securitization transactions. See “ Note 6—Variable Interest Entities and Securitizations ” for information related to these obligations. U.K. Payment Protection Insurance In the U.K., we previously sold payment protection insurance (“PPI”) and other ancillary cross sell products. In response to an elevated level of customer complaints across the industry, heightened media coverage and pressure from consumer advocacy groups, the U.K. Financial Conduct Authority (“FCA”), formerly the Financial Services Authority, investigated and raised concerns about the way the industry has handled complaints related to the sale of these insurance policies. For the past several years, the U.K.’s Financial Ombudsman Service (“FOS”) has been adjudicating customer complaints relating to PPI, escalated to it by consumers who disagree with the rejection of their complaint by firms, leading to customer remediation payments by us and others within the industry. On October 2, 2015, the FCA issued a Statement on PPI (“FCA Proposal”) announcing it has decided to consult on the introduction of a time bar for PPI complaints and on new rules and guidance about how banks should handle unfair relationship PPI complaints covered by s.140A of the Consumer Credit Act of 1974 (“Consumer Credit Act”). On March 2, 2017, the FCA further issued a statement that sets out final rules and guidance on the PPI complaints deadline, which has been set as August 29, 2019. The statement also provides clarity on how to handle PPI complaints under s.140A of the Consumer Credit Act, including guidance on how redress for such complaints should be calculated. The final rules and guidance came into force on August 29, 2017. In determining our best estimate of incurred losses for future remediation payments, management considers numerous factors, including (i) the number of customer complaints we expect in the future; (ii) our expectation of upholding those complaints; (iii) the expected number of complaints customers escalate to the FOS; (iv) our expectation of the FOS upholding such escalated complaints; (v) the number of complaints that fall under the s.140A of the Consumer Credit Act; and (vi) the estimated remediation payout to customers. We monitor these factors each quarter and adjust our reserves to reflect the latest data. Management’s best estimate of incurred losses related to U.K. PPI totaled $298 million and $238 million as of September 30, 2017 and December 31, 2016 , respectively. The increase in the reserve was primarily driven by an addition of $99 million recorded in the first quarter of 2017. Other movements were due to a combination of utilization of the reserve through customer refund payments and foreign exchange movements. For the three months ended September 30, 2017 , no additions were made to our reserve. Our best estimate of reasonably possible future losses beyond our reserve as of September 30, 2017 is approximately $200 million . Mortgage Representation and Warranty Liabilities We acquired three subsidiaries that originated residential mortgage loans and sold these loans to various purchasers, including purchasers who created securitization trusts. These subsidiaries are Capital One Home Loans, LLC, which was acquired in February 2005; GreenPoint, which was acquired in December 2006 as part of the North Fork acquisition; and Chevy Chase Bank, F.S.B. (“CCB”), which was acquired in February 2009 and subsequently merged into CONA (collectively, the “subsidiaries”). In connection with their sales of mortgage loans, the subsidiaries entered into agreements containing varying representations and warranties about, among other things, the ownership of the loan, the validity of the lien securing the loan, the loan’s compliance with any applicable loan criteria established by the purchaser, including underwriting guidelines and the existence of mortgage insurance, and the loan’s compliance with applicable federal, state and local laws. The representations and warranties do not address the credit performance of the mortgage loans, but mortgage loan performance often influences whether a claim for breach of representation and warranty will be asserted and has an effect on the amount of any loss in the event of a breach of a representation or warranty. Each of these subsidiaries may be required to repurchase mortgage loans in the event of certain breaches of these representations and warranties. In the event of a repurchase, the subsidiary is typically required to pay the unpaid principal balance of the loan together with interest and certain expenses (including, in certain cases, legal costs incurred by the purchaser and/or others). The subsidiary then recovers the loan or, if the loan has been foreclosed, the underlying collateral. The subsidiary is exposed to any losses on the repurchased loans, taking into account any recoveries on the collateral. In some instances, rather than repurchase the loans, a subsidiary may agree to make cash payments to make a purchaser whole on losses or to settle repurchase claims, possibly including claims for attorneys’ fees and interest. In addition, our subsidiaries may be required to indemnify certain purchasers and others against losses they incur as a result of certain breaches of representations and warranties. These subsidiaries, in total, originated and sold to non-affiliates approximately $111 billion original principal balance of mortgage loans between 2005 and 2008, which are the years (or “vintages”) with respect to which our subsidiaries have received the vast majority of the repurchase-related requests and other related claims. The following table presents the original principal balance of mortgage loan originations for the three general categories of purchasers of mortgage loans and the estimated unpaid principal balance as of September 30, 2017 and December 31, 2016 . Table 14.2 : Unpaid Principal Balance of Mortgage Loans Originated and Sold to Third Parties Based on Category of Purchaser Estimated Unpaid Principal Balance Original Principal Balance (Dollars in billions) September 30, December 31, 2005-2008 GSEs $ 1 $ 2 $ 11 Insured Securitizations 3 3 20 Uninsured Securitizations and Other 11 12 80 Total $ 15 $ 17 $ 111 Of the $20 billion in original principal balance of mortgage loans sold directly by our subsidiaries to private-label purchasers who placed the loans into securitizations supported by bond insurance (“Insured Securitizations”), approximately 48% of the original principal balance was covered by bond insurance. Further, approximately $16 billion original principal balance was placed in securitizations as to which the monoline bond insurers have made repurchase-related requests or loan file requests to one of our subsidiaries (“Active Insured Securitizations”) and the remaining approximately $4 billion original principal balance was placed in securitizations as to which the monoline bond insurers have not made repurchase-related requests or loan file requests to one of our subsidiaries (“Inactive Insured Securitizations”). Insured Securitizations often allow the monoline bond insurer to act independently of the investors. Bond insurers typically have indemnity agreements directly with both the mortgage originators and the securitizers, and they often have super-majority rights within the trust documentation that allow them to direct trustees to pursue mortgage repurchase-related requests without coordination with other investors. Because we do not service most of the loans our subsidiaries sold to others, we do not have complete information about the current ownership of a portion of the $80 billion in original principal balance of mortgage loans not sold directly to GSEs or placed in Insured Securitizations. We have determined based on information obtained from third-party databases that about $48 billion original principal balance of these mortgage loans was placed in private-label publicly issued securitizations not supported by bond insurance (“Uninsured Securitizations”). An additional approximately $22 billion original principal balance of mortgage loans were initially sold to private investors as whole loans. Various known and unknown investors purchased the remaining $10 billion original principal balance of mortgage loans. With respect to the $111 billion in original principal balance of mortgage loans originated and sold to others between 2005 and 2008, we estimate that approximately $15 billion in unpaid principal balance remains outstanding as of September 30, 2017 , of which approximately $2 billion in unpaid principal balance is at least 90 days delinquent. Approximately $23 billion in losses have been realized by third parties. Because we do not service most of the loans we sold to others, we do not have complete information about the underlying credit performance levels for some of these mortgage loans. These amounts reflect our best estimates, including extrapolations of underlying credit performance where necessary. These estimates are dependent on the availability of performance data. The subsidiaries had open repurchase-related requests with regard to approximately $566 million original principal balance of mortgage loans as of September 30, 2017 , a decrease of $803 million from $1.4 billion as of December 31, 2016. The remaining repurchase requests are almost entirely related to outstanding litigation matters. The repurchase-related requests reflect the original principal balance amounts of the mortgage loans at issue and do not correspond to the losses our subsidiary would incur upon the repurchase of these loans. Total repurchase-related requests include all timely requests ever received by our subsidiaries where the requesting party has not formally rescinded the repurchase-related requests or our subsidiary has not agreed to either repurchase the loan at issue or make the requesting party whole with respect to its losses. We have received relatively few repurchase-related requests subsequent to the New York’s highest court ruling in 2015 that the statute of limitations for repurchase claims begins when the relevant representations and warranties were made, as opposed to some later date during the life of the loan. Additionally, we have received relatively few repurchase-related demands for vintages after 2007, mostly because GreenPoint ceased originating mortgages in August 2007. For the $16 billion original principal balance in Active Insured Securitizations, our reserving approach is based upon the expected resolution of litigation directed by the monoline bond insurers. Accordingly, our representation and warranty reserves related to Active Insured Securitizations are litigation reserves. In establishing these litigation reserves, we consider the current and future monoline insurer losses inherent within the securitization and apply legal judgment to the developing factual and legal record to estimate the liability for each securitization. We also consider both our own past monoline settlements and publicly available industry monoline settlements in establishing these litigation reserves. Our reserves with respect to the U.S. Bank Litigation, referenced below, are related to Active Insured Securitizations. Further, to the extent we have litigation reserves with respect to indemnification risks from certain representation and warranty lawsuits brought by monoline bond insurers against third-party securitizations sponsors, where one of our subsidiaries provided some or all of the mortgage collateral within the securitization but is not a defendant in the litigation, such reserves are also contained within this category. For the $11 billion original principal balance of GSE loans, the $4 billion original principal balance of mortgage loans in Inactive Insured Securitizations and the $80 billion in original principal balance of mortgage loans not sold directly to GSEs or placed in Insured Securitizations, our remaining reserves are also litigation reserves. In establishing these litigation reserves, we consider the current and future losses associated with the loans at issue and apply legal judgment to the developing factual and legal record to estimate the probable liability for each claim, if any, utilizing both our own experience and publicly available industry settlement information. Accordingly, we only reserve for such exposures when a trustee or investor with standing brings claims and it is probable we have incurred a loss. Some Uninsured Securitization investors are currently suing investment banks and securitization sponsors under federal and/or state securities laws. Although we face some indirect indemnity risks from these litigations, we generally have not established reserves with respect to these indemnity risks because we do not consider them to be both probable and reasonably estimable liabilities. In addition, to the extent we have litigation reserves with respect to indemnification risks from certain representation and warranty lawsuits brought by parties who purchased loans from our subsidiaries and subsequently re-sold the loans into securitizations, such reserves are also contained within this category. Our reserves could be impacted by any claims which may be brought by governmental agencies under the Financial Institutions Reform, Recovery and Enforcement Act (“FIRREA”), the False Claims Act or other federal or state statutes. For example, GreenPoint and Capital One have received requests for information and/or subpoenas from various governmental regulators and law enforcement authorities, including members of the RMBS Working Group, relating to the origination of loans for sale to the GSEs and to RMBS participants. We are cooperating with these regulators and other authorities in responding to such requests. The aggregate reserve for all three subsidiaries totaled $401 million as of September 30, 2017 compared to $630 million as of December 31, 2016 . The decrease was primarily due to the resolution of several legal matters . The remaining representation and warranty reserve relates almost entirely to outstanding litigation matters. The table below summarizes changes in our representation and warranty reserve for the three and nine months ended September 30, 2017 and 2016 . Table 14.3 : Changes in Representation and Warranty Reserve (1) Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Representation and warranty reserve, beginning of period $ 521 $ 614 $ 630 $ 610 Provision (benefit) for mortgage representation and warranty losses: Recorded in continuing operations (1 ) 0 (26 ) (2 ) Recorded in discontinued operations 13 18 (48 ) 23 Total provision (benefit) for mortgage representation and warranty losses 12 18 (74 ) 21 Net realized recoveries (losses) (132 ) 0 (155 ) 1 Representation and warranty reserve, end of period $ 401 $ 632 $ 401 $ 632 __________ (1) Reported on our consolidated balance sheets as a component of other liabilities. As part of our business planning processes, we have considered various outcomes relating to the future representation and warranty liabilities of our subsidiaries that are possible but do not rise to the level of being both probable and reasonably estimable outcomes justifying an incremental accrual under applicable accounting standards. Our current best estimate of reasonably possible future losses from representation and warranty claims beyond our reserves as of September 30, 2017 is approximately $550 million , a decrease from our $1.5 billion estimate at December 31, 2016 . The primary driver of the decrease in this estimate has been the resolution of several legal matters. The estimate as of September 30, 2017 covers all reasonably possible losses relating to representation and warranty claim activity, including those relating to the cases more specifically described below in Mortgage Repurchase Litigation. In estimating reasonably possible future losses in excess of our current reserves, for Active Insured Securitizations, we assume loss rates on the high end of those observed in monoline settlements or court rulings. For our remaining GSE exposures, Uninsured Securitizations and whole loan exposures, our reasonably possible risk estimates assume lifetime loss rates and claims rates at the highest levels of our past experience and also consider the limited instances of observed settlements. We do not however, based on industry precedent, assume claim rates or loss rates for these risk categories will be as high as those assumed for the Active Insured Securitizations. Should the number of claims or the loss rates on these claims increase significantly, our estimate of reasonably possible risk would increase materially. We also assume that repurchase-related requests will be resolved at discounts reflecting the nature of the claims, the vintage of the underlying loans and evolving legal precedents. Notwithstanding our ongoing attempts to estimate a reasonably possible amount of future losses beyond our current accrual levels based on current information, it is possible that actual future losses will exceed both the current accrual level and our current estimate of the amount of reasonably possible losses. Our reserve and reasonably possible loss estimates involve considerable judgment and reflect that there is still significant uncertainty regarding numerous factors that may impact the ultimate loss levels, including, but not limited to: litigation outcomes; court rulings; governmental enforcement decisions; future repurchase and indemnification claim levels; securitization trustees pursuing mortgage repurchase litigation unilaterally or in coordination with investors; investors successfully pursuing repurchase litigation independently and without the involvement of the trustee as a party; ultimate repurchase and indemnification rates; future mortgage loan performance levels; actual recoveries on the collateral; and macroeconomic conditions (including unemployment levels and housing prices). In light of the significant uncertainty as to the ultimate liability our subsidiaries may incur from these matters, an adverse outcome in one or more of these matters could be material to our results of operations or cash flows for any particular reporting period. Litigation In accordance with the current accounting standards for loss contingencies, we establish reserves for litigation related matters that arise from the ordinary course of our business activities when it is probable that a loss associated with a claim or proceeding has been incurred and the amount of the loss can be reasonably estimated. None of the amounts we currently have recorded individually or in the aggregate are considered to be material to our financial condition. Litigation claims and proceedings of all types are subject to many uncertain factors that generally cannot be predicted with assurance. Below we provide a description of potentially material legal proceedings and claims. For some of the matters disclosed below, we are able to determine estimates of potential future outcomes that are not probable and reasonably estimable outcomes justifying either the establishment of a reserve or an incremental reserve build, but which are reasonably possible outcomes. For other disclosed matters, such an estimate is not possible at this time. For those matters below where an estimate is possible (excluding the reasonably possible future losses relating to the Mortgage Repurchase Litigation described below, which are included within the estimate of reasonably possible representation and warranty losses discussed above), management currently estimates the reasonably possible future losses beyond our reserves as of September 30, 2017 is approximately $250 million . Notwithstanding our attempt to estimate a reasonably possible range of loss beyond our current accrual levels for some litigation matters based on current information, it is possible that actual future losses will exceed both the current accrual level and the range of reasonably possible losses disclosed here. Given the inherent uncertainties involved in these matters, especially those involving governmental agencies, and the very large or indeterminate damages sought in some of these matters, there is significant uncertainty as to the ultimate liability we may incur from these litigation matters and an adverse outcome in one or more of these matters could be material to our results of operations or cash flows for any particular reporting period. Interchange Litigation In 2005, a number of entities, each purporting to represent a class of retail merchants, filed antitrust lawsuits against MasterCard and Visa and several member banks, including our subsidiaries and us, alleging among other things, that the defendants conspired to fix the level of interchange fees. The complaints seek injunctive relief and civil monetary damages, which could be trebled. Separately, a number of large merchants have asserted similar claims against Visa and MasterCard only (together with the lawsuits described above, “Interchange Lawsuits”). In October 2005, the class and merchant Interchange Lawsuits were consolidated before the U.S. District Court for the Eastern District of New York for certain purposes, including discovery. In July 2012, the parties executed and filed with the court a Memorandum of Understanding agreeing to resolve the litigation on certain terms set forth in a settlement agreement attached to the Memorandum. The class settlement provides for, among other things, (i) payments by defendants to the class and individual plaintiffs totaling approximately $6.6 billion ; (ii) a distribution to the class merchants of an amount equal to 10 basis points of certain interchange transactions for a period of eight months ; and (iii) modifications to certain Visa and MasterCard rules regarding point of sale practices. In December 2013, the district court granted final approval of the proposed class settlement, which was appealed to the Second Circuit Court of Appeals in January 2014. On June 30, 2016, the Second Circuit Court of Appeals vacated the district court’s certification of the class, reversed approval of the proposed class settlement, and remanded the litigation to the district court for further proceedings, ruling that some of the merchants that were part of the proposed class settlement were not adequately represented. Because the Second Circuit ruling remands the litigation to the district court for further proceedings, the ultimate outcome in this matter is uncertain. Several merchant plaintiffs also opted out of the class settlement before it was overturned, and some of those plaintiffs have sued MasterCard, Visa and various member banks, including Capital One. The opt-out cases are consolidated before the U.S. District Court for the Eastern District of New York for certain purposes, including discovery. Visa and MasterCard have settled a number of individual opt-out cases, requiring non-material payments from all banks, including Capital One. Separate settlement and judgment sharing agreements between Capital One, MasterCard and Visa allocate the liabilities of any judgment or settlement arising from the Interchange Lawsuits and associated opt-out cases. Visa created a litigation escrow account following its IPO of stock in 2008, which funds any settlements for its member banks, and any settlements related to MasterCard allocated losses are reflected in Capital One’s reserves. Mortgage Repurchase Litigation In February 2009, GreenPoint was named as a defendant in a lawsuit commenced in the New York County Supreme Court, by U.S. Bank, N. A., Syncora Guarantee Inc. and CIFG Assurance North America, Inc. (“U.S. Bank Litigation”). Plaintiffs allege, among other things, that GreenPoint breached certain representations and warranties in two contracts pursuant to which GreenPoint sold approximately 30,000 mortgage loans having an aggregate original principal balance of approximately $ 1.8 billion to a purchaser that ultimately transferred most of these mortgage loans to a securitization trust. Some of the securities issued by the trust were insured by Syncora and CIFG. Plaintiffs seek unspecified damages and an order compelling GreenPoint to repurchase the entire portfolio of 30,000 mortgage loans based on alleged breaches of representations and warranties relating to a limited sampling of loans in the portfolio, or, alternatively, the repurchase of specific mortgage loans to which the alleged breaches of representations and warranties relate. In March 2010, the court granted GreenPoint’s motion to dismiss with respect to plaintiffs Syncora and CIFG but denied the motion with respect to U.S. Bank. GreenPoint subsequently answered the complaint with respect to U.S. Bank, denying the allegations, and filed a counterclaim against U.S. Bank alleging breach of covenant of good faith and fair dealing. In February 2012, the court denied plaintiffs’ motion for leave to file an amended complaint and dismissed Syncora and CIFG from the case. Syncora and CIFG appealed their dismissal to the New York Supreme Court, Appellate Division, First Department (“First Department”), which affirmed the dismissal in April 2013. The New York Court of Appeals denied Syncora’s and CIFG’s motion for leave to appeal the First Department’s decision in February 2014. Therefore, the case is now proceeding with U.S. Bank as the sole plaintiff. In May, June and July 2012, the Federal Housing Finance Agency (“FHFA”) (acting as conservator for Freddie Mac) filed three summonses with notice in the New York state court against GreenPoint, on behalf of the trustees for three RMBS trusts backed by loans originated by GreenPoint with an aggregate original principal balance of $3.4 billion . In January 2013, the plaintiffs filed an amended consolidated complaint in the name of the three trusts, acting by the respective trustees, alleging breaches of contractual representations and warranties regarding compliance with GreenPoint underwriting guidelines relating to certain loans (“FHFA Litigation”). Plaintiffs seek specific performance of the repurchase obligations with respect to the loans for which they have provided notice of alleged breaches as well as all other allegedly breaching loans, rescissory damages, indemnification, costs and interest. On March 29, 2017, the trial court granted GreenPoint’s motion for summary judgment and dismissed plaintiff’s claims as untimely. In May 2017, the plaintiff appealed the dismissal to the Second Circuit. As noted above in the section entitled Mortgage Representation and Warranty Liabilities, the Company’s subsidiaries establish reserves with respect to representation and warranty litigation matters, where appropriate, within the Company’s overall representation and warranty reserves. Anti-Money Laundering Capital One is being investigated by the New York District Attorney’s Office (“NYDA”), the Department of Justice and the Financial Crimes Enforcement Network (“FinCEN”) of the U.S. Department of Treasury with respect to certain former check casher clients

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation and Use of Estimates The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the U.S. (“U.S. GAAP”).
Use of Estimates	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and in the related disclosures. These estimates are based on information available as of the date of the consolidated financial statements. While management makes its best judgment, actual amounts or results could differ from these estimates. In the opinion of management, all normal, recurring adjustments have been included for a fair statement of this interim financial information. Certain prior period amounts have been reclassified to conform to the current period presentation.
Principles of Consolidation	Principles of Consolidation The unaudited consolidated financial statements include the accounts of Capital One Financial Corporation and all other entities in which we have a controlling financial interest. We determine whether we have a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity (“VIE”). All significant intercompany account balances and transactions have been eliminated.
New Accounting Standards	Newly Adopted Accounting Standards Restricted Cash In November 2016 , the Financial Accounting Standards Board (“FASB”) issued revised guidance that requires restricted cash and restricted cash equivalents to be included within beginning and ending total cash amounts reported in the consolidated statements of cash flows. Disclosure of the nature of the restrictions on cash balances is required under the guidance. We have elected to early adopt the guidance retrospectively effective as of January 1, 2017. Upon adoption, changes in restricted cash, which had previously been presented as financing activities, are now included within beginning and ending Cash, cash equivalents and restricted cash for securitization investors balances. The Cash, cash equivalents and restricted cash for securitization investors balances presented in the consolidated statements of cash flows are comprised of the amounts captioned on the consolidated balance sheets as Total cash and cash equivalents and Restricted cash for securitization investors. Improvements to Employee Share-Based Accounting In March 2016, the FASB issued revised guidance for accounting for employee share-based payments. The guidance requires that all excess tax benefits and tax deficiencies that pertain to employee stock-based incentive payments be recognized as income tax expense or benefit in the consolidated statements of income, rather than within additional paid-in capital; and that excess tax benefits be classified as an operating activity rather than financing activity in the consolidated statements of cash flows. The guidance also permits an accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. We adopted the guidance effective in the first quarter of 2017 on a prospective basis related to recognition of excess tax benefits and deficiencies in the consolidated statements of income and presentation of excess tax benefits in the consolidated statements of cash flows. In addition, we made an accounting policy election to account for forfeitures of awards as they occur and applied a modified retrospective transition method. Our adoption of this guidance did not have a material impact to our consolidated financial statements. Recently Issued but Not Yet Adopted Accounting Standards Targeted Improvements to Accounting for Hedging Activities In August 2017, the FASB issued new hedge accounting guidance to amend the existing hedge accounting recognition and presentation requirements . The amendments better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of the impacts of those hedging relationships. The guidance is effective for us on January 1, 2019, with early adoption permitted. We are currently assessing the potential impacts of this guidance to our existing risk management practices as well as the overall effects on our consolidated financial statements and related disclosures. We are currently evaluating the overall impact of adopting this standard earlier than required. Premium Amortization on Purchased Callable Debt Securities In March 2017, the FASB issued revised guidance to shorten the amortization period to the earliest call date for certain purchased callable debt securities held at a premium. There is no change for accounting for securities held at a discount. Under the existing guidance, the premium is generally amortized as an adjustment to interest income over the contractual life of the debt security. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. This guidance is effective for us on January 1, 2019, with early adoption permitted, using the modified retrospective method of adoption. We plan to adopt the standard on its effective date. Simplifying the Test for Goodwill Impairment In January 2017, the FASB issued revised guidance which is intended to reduce the cost and complexity of testing goodwill for impairment by eliminating the second step from the current goodwill impairment test. Under the existing guidance, the first step compares a reporting unit’s carrying value to its fair value. If the carrying value exceeds fair value, an entity performs the second step, which assigns the reporting unit’s fair value to its assets and liabilities, including unrecognized assets and liabilities, in the same manner as required in purchase accounting. Under the new guidance, any impairment of a reporting unit’s goodwill is determined based on the amount by which the reporting unit’s carrying value exceeds its fair value, limited to the amount of goodwill allocated to the reporting unit. This guidance is effective for us on January 1, 2020, with early adoption permitted, using the prospective method of adoption. We plan to adopt the standard on its effective date. Measurement of Credit Losses on Financial Instruments In June 2016, the FASB issued revised guidance for impairments on financial instruments. The guidance requires an impairment model (known as the current expected credit loss (“CECL”) model) that is based on expected rather than incurred losses, with an anticipated result of more timely loss recognition. The CECL model is applicable to financial assets measured at amortized cost, net investments in leases that are not accounted for at fair value through net income and certain off-balance sheet arrangements. The CECL model will replace our current accounting for purchased credit-impaired (“PCI”) and impaired loans. The guidance also amends the available for sale (“AFS”) debt securities other-than-temporary impairment (“OTTI”) model. Credit losses (and subsequent recoveries) on AFS debt securities will be recorded through an allowance approach, rather than the current U.S. GAAP practice of permanent write-downs for credit losses and accreting positive changes through interest income over time. This guidance is effective for us on January 1, 2020, with early adoption permitted no earlier than January 1, 2019, using the modified retrospective method of adoption. We plan to adopt the standard on its effective date. We have established a company-wide, cross-functional governance structure for our implementation of this standard. We are in the process of determining key accounting interpretations, data requirements and necessary changes to our credit loss estimation methods, processes and systems. We continue to assess the potential impact on our consolidated financial statements and related disclosures. Due to the significant differences in the revised guidance from existing U.S. GAAP, the implementation of this guidance may result in material changes in our accounting for credit losses on financial instruments. Leases In February 2016, the FASB issued revised guidance for leases. The guidance requires lessees to recognize right of use assets and lease liabilities on their consolidated balance sheets and disclose key information about all their leasing arrangements, with certain practical expedients. This guidance is effective for us on January 1, 2019, with early adoption permitted, using the modified retrospective method of adoption. We plan to adopt the standard on the effective date. We are currently in the process of reviewing lease contracts, establishing new processes and internal controls, evaluating the impact of various accounting policy elections and the potential impact on our consolidated financial statements. We expect our total assets and liabilities to increase. Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, the FASB issued revised guidance for the recognition, measurement, presentation, and disclosure of financial instruments. The main provisions of the guidance include, (i) the measurement of most equity investments at fair value with changes in fair value recorded through net income, except those accounted for under the equity method of accounting, or those that do not have a readily determinable fair value (for which a practical expedient can be elected); (ii) the required use of the exit price notion when valuing financial instruments for disclosure purposes; (iii) the separate presentation in other comprehensive income of the instrument-specific credit risk portion of the total change in the fair value of a liability under the fair value option; (iv) the determination of the need for a valuation allowance on a deferred tax asset related to AFS securities must be made in combination with other deferred tax assets. The guidance eliminates the current classifications of equity securities as trading or AFS and will require separate presentation of financial assets and liabilities by category and form of the financial assets on the face of the consolidated balance sheets or within the accompanying notes. The guidance also eliminates the requirement to disclose the methods and significant assumptions used to estimate fair value of financial instruments measured at amortized cost on the balance sheet. This guidance is effective for us on January 1, 2018. Early adoption is only permitted for the requirement to present the portion of the total change in fair value attributable to a change in the instrument-specific credit risk in other comprehensive income. We plan to adopt the standard on its effective date, and do not expect such adoption to have a material impact on our consolidated financial statements. Revenue from Contracts with Customers In May 2014, the FASB issued revised guidance for the recognition, measurement and disclosure of revenue from contracts with customers. The original guidance has been amended through subsequent accounting standard updates that resulted in technical corrections, improvements, and a one-year deferral of the effective date to January 1, 2018. The guidance, as amended, is applicable to all entities and, once effective, will replace significant portions of existing industry and transaction-specific revenue recognition rules with a more principles-based recognition model. Entities can elect to apply either a full or modified retrospective method of adoption. Most revenue associated with financial instruments, including interest income, loan origination fees and credit card fees, is outside the scope of the guidance. Gains and losses on investment securities, derivatives and sales of financial instruments are similarly excluded from the scope. Our implementation efforts have included identifying revenues and related costs within the scope of this guidance, reviewing the associated contracts and evaluating the related accounting policies and internal controls to determine if any changes will be required. We have substantially completed the evaluation of the potential impact of this guidance on the timing, recognition, and presentation of revenues and expenses and have not identified any material changes. We continue to evaluate and prepare for the new disclosures required by this guidance. We plan to adopt the standard on its effective date, using the modified retrospective method of adoption.
Offsetting of Financial Assets and Liabilities	Offsetting of Financial Assets and Liabilities Derivative contracts and repurchase agreements that we execute bilaterally in the OTC market are governed by enforceable master netting arrangements where we generally have the right to offset exposure with the same counterparty. Either counterparty can generally request to net settle all contracts through a single payment upon default on, or termination of, any one contract. We elect to offset the derivative assets and liabilities under netting arrangements for balance sheet presentation where a right of setoff exists. For derivative contracts entered into under master netting arrangements for which we have not been able to confirm the enforceability of the setoff rights, or those not subject to master netting arrangements, we do not offset our derivative positions for balance sheet presentation. We also maintain collateral agreements with certain derivative counterparties. For bilateral derivatives, we review our collateral positions on a daily basis and exchange collateral with our counterparties in accordance with standard International Swaps and Derivatives Association documentation and other related agreements. Agreements with certain bilateral counterparties require both parties to maintain collateral in the event the fair values of derivative instruments exceed established exposure thresholds. For centrally cleared derivatives, we are subject to initial margin and daily variation margin posting with the central clearinghouses. Acceptable types of collateral are typically in the form of cash or high quality liquid securities. The exchange of collateral is dependent upon the fair value of the derivative instruments as well as the fair value of the pledged collateral. When valuing collateral, an estimate of the variation in price and liquidity over time is subtracted in the form of a “haircut” to discount the value of the collateral pledged.

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Summary of Results from Discontinued Operations	The following table summarizes the results from discontinued operations for the three and nine months ended September 30, 2017 and 2016 : Table 2.1 : Results of Discontinued Operations Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Income (loss) from discontinued operations before income taxes $ (47 ) $ (17 ) $ (40 ) $ (27 ) Income tax provision (benefit) (17 ) (6 ) (14 ) (10 ) Income (loss) from discontinued operations, net of tax $ (30 ) $ (11 ) $ (26 ) $ (17 )

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Schedule Of Expected Maturity And Weighted Average Yield Of Securities [Line Items]
Schedule of Investment Portfolio	The table below presents the overview of our investment securities portfolio as of September 30, 2017 and December 31, 2016 . Table 3.1 : Overview of Investment Securities Portfolio (Dollars in millions) September 30, 2017 December 31, 2016 Securities available for sale, at fair value $ 39,742 $ 40,737 Securities held to maturity, at carrying value 28,650 25,712 Total investment securities $ 68,392 $ 66,449
Schedule of Available-for-Sale Securities	The table below presents the amortized cost, gross unrealized gains and losses, and fair value of securities available for sale as of September 30, 2017 and December 31, 2016 . Table 3.2 : Investment Securities Available for Sale September 30, 2017 (Dollars in millions) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses (1) Fair Value Investment securities available for sale: U.S. Treasury securities $ 5,110 $ 29 $ 0 $ 5,139 RMBS: Agency (2) 26,186 109 (256 ) 26,039 Non-agency 1,797 402 0 2,199 Total RMBS 27,983 511 (256 ) 28,238 CMBS: Agency (2) 3,033 16 (28 ) 3,021 Non-agency 1,783 27 (2 ) 1,808 Total CMBS 4,816 43 (30 ) 4,829 Other ABS (3) 546 1 0 547 Other securities (4) 984 6 (1 ) 989 Total investment securities available for sale $ 39,439 $ 590 $ (287 ) $ 39,742 December 31, 2016 (Dollars in millions) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses (1) Fair Value Investment securities available for sale: U.S. Treasury securities $ 5,103 $ 11 $ (49 ) $ 5,065 RMBS: Agency (2) 26,830 109 (412 ) 26,527 Non-agency 2,349 382 (9 ) 2,722 Total RMBS 29,179 491 (421 ) 29,249 CMBS: Agency (2) 3,335 14 (45 ) 3,304 Non-agency 1,676 21 (13 ) 1,684 Total CMBS 5,011 35 (58 ) 4,988 Other ABS (3) 714 1 (1 ) 714 Other securities (4) 726 1 (6 ) 721 Total investment securities available for sale $ 40,733 $ 539 $ (535 ) $ 40,737 __________ (1) Includes non-credit-related OTTI that is recorded in accumulated other comprehensive income (“AOCI”) of $1 million and $9 million as of September 30, 2017 and December 31, 2016 , respectively. Substantially all of this amount is related to non-agency RMBS. (2) Includes Government National Mortgage Association (“Ginnie Mae”) guaranteed securities, Federal National Mortgage Association (“Fannie Mae”) and Federal Home Loan Mortgage Corporation (“Freddie Mac”) issued securities. (3) ABS collateralized by credit card loans constituted approximately 56% and 57% of the other ABS portfolio as of September 30, 2017 and December 31, 2016 , respectively, and ABS collateralized by auto dealer floor plan inventory loans and leases constituted approximately 23% of the other ABS portfolio as of both September 30, 2017 and December 31, 2016 . (4) Includes supranational bonds, foreign government bonds, mutual funds and equity investments.
Investment Securities Held to Maturity	The table below presents the amortized cost, carrying value, gross unrealized gains and losses, and fair value of securities held to maturity as of September 30, 2017 and December 31, 2016 . Table 3.3 : Investment Securities Held to Maturity September 30, 2017 (Dollars in millions) Amortized Cost Unrealized Losses Recorded in AOCI (1) Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 199 $ 0 $ 199 $ 0 $ 0 $ 199 Agency RMBS 25,590 (795 ) 24,795 704 (102 ) 25,397 Agency CMBS 3,737 (81 ) 3,656 97 (22 ) 3,731 Total investment securities held to maturity $ 29,526 $ (876 ) $ 28,650 $ 801 $ (124 ) $ 29,327 December 31, 2016 (Dollars in millions) Amortized Cost Unrealized Losses Recorded in AOCI (1) Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 199 $ 0 $ 199 $ 0 $ 0 $ 199 Agency RMBS 23,022 (897 ) 22,125 606 (158 ) 22,573 Agency CMBS 3,480 (92 ) 3,388 77 (41 ) 3,424 Total investment securities held to maturity $ 26,701 $ (989 ) $ 25,712 $ 683 $ (199 ) $ 26,196 __________ (1) Certain investment securities were transferred from the available for sale category to the held to maturity category in 2013. This amount represents the unrealized holding gain or loss at the date of transfer, net of any subsequent accretion. Any bonds purchased into the securities held to maturity portfolio rather than transferred, will not have unrealized losses recognized in AOCI.
Schedule of Available-for-Sale Securities in Gross Unrealized Loss Position	The table below provides, by major security type, information about our securities available for sale in a gross unrealized loss position and the length of time that individual securities have been in a continuous unrealized loss position as of September 30, 2017 and December 31, 2016 . Table 3.4 : Securities in a Gross Unrealized Loss Position September 30, 2017 Less than 12 Months 12 Months or Longer Total (Dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Investment securities available for sale: U.S. Treasury securities $ 1 $ 0 $ 0 $ 0 $ 1 $ 0 RMBS: Agency 9,699 (85 ) 8,237 (171 ) 17,936 (256 ) Non-agency 9 0 11 0 20 0 Total RMBS 9,708 (85 ) 8,248 (171 ) 17,956 (256 ) CMBS: Agency 828 (8 ) 818 (20 ) 1,646 (28 ) Non-agency 177 0 152 (2 ) 329 (2 ) Total CMBS 1,005 (8 ) 970 (22 ) 1,975 (30 ) Other ABS 116 0 52 0 168 0 Other securities 364 (1 ) 0 0 364 (1 ) Total investment securities available for sale in a gross unrealized loss position $ 11,194 $ (94 ) $ 9,270 $ (193 ) $ 20,464 $ (287 ) December 31, 2016 Less than 12 Months 12 Months or Longer Total (Dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Investment securities available for sale: U.S. Treasury securities $ 1,060 $ (49 ) $ 0 $ 0 $ 1,060 $ (49 ) RMBS: Agency 16,899 (329 ) 4,865 (83 ) 21,764 (412 ) Non-agency 128 (2 ) 145 (7 ) 273 (9 ) Total RMBS 17,027 (331 ) 5,010 (90 ) 22,037 (421 ) CMBS: Agency 1,624 (21 ) 745 (24 ) 2,369 (45 ) Non-agency 826 (11 ) 129 (2 ) 955 (13 ) Total CMBS 2,450 (32 ) 874 (26 ) 3,324 (58 ) Other ABS 187 (1 ) 21 0 208 (1 ) Other securities 417 (6 ) 0 0 417 (6 ) Total investment securities available for sale in a gross unrealized loss position $ 21,141 $ (419 ) $ 5,905 $ (116 ) $ 27,046 $ (535 )
Schedule of Contractual Maturities for Securities	The table below summarizes, by major security type, the expected maturities and weighted-average yields of our investment securities as of September 30, 2017 . Table 3.7 : Expected Maturities and Weighted-Average Yields of Securities September 30, 2017 (Dollars in millions) Due in 1 Year or Less Due > 1 Year through 5 Years Due > 5 Years through 10 Years Due > 10 Years Total Fair value of securities available for sale: U.S. Treasury securities $ 202 $ 647 $ 4,290 $ 0 $ 5,139 RMBS: Agency 173 12,086 13,780 0 26,039 Non-agency 11 1,094 860 234 2,199 Total RMBS 184 13,180 14,640 234 28,238 CMBS: Agency 151 1,899 971 0 3,021 Non-agency 178 1,207 423 0 1,808 Total CMBS 329 3,106 1,394 0 4,829 Other ABS 282 265 0 0 547 Other securities 206 335 352 96 989 Total securities available for sale $ 1,203 $ 17,533 $ 20,676 $ 330 $ 39,742 Amortized cost of securities available for sale $ 1,204 $ 17,346 $ 20,598 $ 291 $ 39,439 Weighted-average yield for securities available for sale (1) 1.42 % 2.51 % 2.32 % 6.26 % 2.40 % Carrying value of securities held to maturity: U.S. Treasury securities $ 199 $ 0 $ 0 $ 0 $ 199 Agency RMBS 22 1,781 18,421 4,571 24,795 Agency CMBS 0 1,955 628 1,073 3,656 Total securities held to maturity $ 221 $ 3,736 $ 19,049 $ 5,644 $ 28,650 Fair value of securities held to maturity $ 220 $ 3,832 $ 19,513 $ 5,762 $ 29,327 Weighted-average yield for securities held to maturity (1) 0.67 % 2.52 % 2.67 % 3.33 % 2.76 % __________ (1) The weighted-average yield represents the effective yield for the investment securities and is calculated based on the amortized cost of each security.
Schedule of Credit Losses Related to Debt Securities Recognized in Earnings	The table below presents a rollforward of the credit-related OTTI recognized in earnings for the three and nine months ended September 30, 2017 and 2016 on investment securities for which we had no intent to sell. Table 3.8 : Credit Impairment Rollforward Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Credit loss component, beginning of period $ 207 $ 204 $ 207 $ 199 Additions: Initial credit impairment 1 0 1 1 Subsequent credit impairment 0 0 1 7 Total additions 1 0 2 8 Reductions due to payoffs, disposals, transfers and other (61 ) 0 (62 ) (3 ) Credit loss component, end of period $ 147 $ 204 $ 147 $ 204
Schedule of Gross Realized Gains and Losses on Sale and Redemption of Available-for-Sale Securities Recognized in Earnings	The following table presents the gross realized gains and losses on the sale and redemption of securities available for sale, and the OTTI losses recognized in earnings for the three and nine months ended September 30, 2017 and 2016 . We also present the proceeds from the sale of securities available for sale for the periods presented. We did not sell any investment securities that are classified as held to maturity. Table 3.9 : Realized Gains and Losses and OTTI Recognized in Earnings Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Realized gains (losses): Gross realized gains $ 118 $ 2 $ 123 $ 8 Gross realized losses (49 ) (1 ) (54 ) (5 ) Net realized gains 69 1 69 3 OTTI recognized in earnings: Credit-related OTTI (1 ) 0 (2 ) (8 ) Intent-to-sell OTTI 0 0 (3 ) (2 ) Total OTTI recognized in earnings (1 ) 0 (5 ) (10 ) Net securities gains (losses) $ 68 $ 1 $ 64 $ (7 ) Total proceeds from sales $ 2,670 $ 828 $ 5,793 $ 3,528
Schedule of Outstanding Contractual Balance and Carrying Value of Credit-Impaired ING Direct Debt Securities	The table below presents the outstanding balance and carrying value of the purchased credit-impaired debt securities as of September 30, 2017 and December 31, 2016 . Table 3.10 : Outstanding Balance and Carrying Value of Acquired Credit-Impaired Debt Securities (Dollars in millions) September 30, 2017 December 31, 2016 Outstanding balance $ 2,226 $ 2,899 Carrying value 1,913 2,277
Schedule of Changes in Accretable Yield of Acquired Securities	The following table presents changes in the accretable yield related to the purchased credit-impaired debt securities for the three and nine months ended September 30, 2017 . Table 3.11 : Changes in the Accretable Yield of Purchased Credit-Impaired Debt Securities (Dollars in millions) Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Accretable yield, beginning of period $ 1,093 $ 1,173 Accretion recognized in earnings (46 ) (144 ) Reduction due to payoffs, disposals, transfers and other (154 ) (157 ) Net reclassifications from nonaccretable difference (35 ) (14 ) Accretable yield, end of period $ 858 $ 858
Available-for-sale Securities
Schedule Of Expected Maturity And Weighted Average Yield Of Securities [Line Items]
Schedule of Contractual Maturities for Securities	The following tables summarize the remaining scheduled contractual maturities, assuming no prepayments, of our investment securities as of September 30, 2017 . Table 3.5 : Contractual Maturities of Securities Available for Sale September 30, 2017 (Dollars in millions) Amortized Cost Fair Value Due in 1 year or less $ 730 $ 731 Due after 1 year through 5 years 2,983 3,013 Due after 5 years through 10 years 6,650 6,694 Due after 10 years (1) 29,076 29,304 Total $ 39,439 $ 39,742 __________ (1) Investments with no stated maturities, which consist of equity securities, are included with contractual maturities due after 10 years.
Securities Held to Maturity
Schedule Of Expected Maturity And Weighted Average Yield Of Securities [Line Items]
Schedule of Contractual Maturities for Securities	Table 3.6 : Contractual Maturities of Securities Held to Maturity September 30, 2017 (Dollars in millions) Carrying Value Fair Value Due in 1 year or less $ 200 $ 199 Due after 1 year through 5 years 753 795 Due after 5 years through 10 years 598 625 Due after 10 years 27,099 27,708 Total $ 28,650 $ 29,327

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loan Portfolio Composition and Aging Analysis	The table below presents the composition and an aging analysis of our loans held for investment portfolio as of September 30, 2017 and December 31, 2016 . The delinquency aging includes all past due loans, both performing and nonperforming. Table 4.1 : Loan Portfolio Composition and Aging Analysis September 30, 2017 (Dollars in millions) Current 30-59 Days 60-89 Days > 90 Days Total Delinquent Loans PCI Loans Total Loans Credit Card: Domestic credit card $ 96,010 $ 1,223 $ 871 $ 1,846 $ 3,940 $ 31 $ 99,981 International card businesses 8,810 135 78 126 339 0 9,149 Total credit card 104,820 1,358 949 1,972 4,279 31 109,130 Consumer Banking: Auto 49,945 2,125 944 276 3,345 0 53,290 Home loan 7,294 36 12 48 96 11,430 18,820 Retail banking 3,387 21 7 18 46 21 3,454 Total consumer banking 60,626 2,182 963 342 3,487 11,451 75,564 Commercial Banking: Commercial and multifamily real estate 27,839 12 1 67 80 25 27,944 Commercial and industrial 38,495 52 93 188 333 478 39,306 Total commercial lending 66,334 64 94 255 413 503 67,250 Small-ticket commercial real estate 412 3 1 4 8 0 420 Total commercial banking 66,746 67 95 259 421 503 67,670 Other loans 54 1 1 2 4 0 58 Total loans (1) $ 232,246 $ 3,608 $ 2,008 $ 2,575 $ 8,191 $ 11,985 $ 252,422 % of Total loans 92.01 % 1.43 % 0.79 % 1.02 % 3.24 % 4.75 % 100.00 % December 31, 2016 (Dollars in millions) Current 30-59 Days 60-89 Days > 90 Days Total Delinquent Loans PCI Loans Total Loans Credit Card: Domestic credit card $ 93,279 $ 1,153 $ 846 $ 1,840 $ 3,839 $ 2 $ 97,120 International card businesses 8,115 124 72 121 317 0 8,432 Total credit card 101,394 1,277 918 1,961 4,156 2 105,552 Consumer Banking: Auto 44,762 2,041 890 223 3,154 0 47,916 Home loan 6,951 44 20 141 205 14,428 21,584 Retail banking 3,477 22 7 20 49 28 3,554 Total consumer banking 55,190 2,107 917 384 3,408 14,456 73,054 Commercial Banking: Commercial and multifamily real estate 26,536 45 0 0 45 28 26,609 Commercial and industrial 38,831 27 84 297 408 585 39,824 Total commercial lending 65,367 72 84 297 453 613 66,433 Small-ticket commercial real estate 473 7 1 2 10 0 483 Total commercial banking 65,840 79 85 299 463 613 66,916 Other loans 56 3 0 5 8 0 64 Total loans (1) $ 222,480 $ 3,466 $ 1,920 $ 2,649 $ 8,035 $ 15,071 $ 245,586 % of Total loans 90.59 % 1.41 % 0.78 % 1.08 % 3.27 % 6.14 % 100.00 % __________ (1) Loans (other than PCI loans) include unearned income, unamortized premiums and discounts, and unamortized deferred fees and costs totaling $739 million and $558 million as of September 30, 2017 and December 31, 2016 , respectively.
90 Plus Day Delinquent Loans Accruing Interest and Nonperforming Loans	The following table presents the outstanding balance of loans 90 days or more past due that continue to accrue interest and loans classified as nonperforming as of September 30, 2017 and December 31, 2016 . Table 4.2 : 90+ Day Delinquent Loans Accruing Interest and Nonperforming Loans (1) September 30, 2017 December 31, 2016 (Dollars in millions) > 90 Days and Accruing Nonperforming Loans > 90 Days and Accruing Nonperforming Loans Credit Card: Domestic credit card $ 1,846 N/A $ 1,840 N/A International card businesses 120 $ 25 96 $ 42 Total credit card 1,966 25 1,936 42 Consumer Banking: Auto 0 346 0 223 Home loan 0 158 0 273 Retail banking 0 33 0 31 Total consumer banking 0 537 0 527 September 30, 2017 December 31, 2016 (Dollars in millions) > 90 Days and Accruing Nonperforming Loans > 90 Days and Accruing Nonperforming Loans Commercial Banking: Commercial and multifamily real estate $ 4 $ 64 $ 0 $ 30 Commercial and industrial 0 717 0 988 Total commercial lending 4 781 0 1,018 Small-ticket commercial real estate 0 7 0 4 Total commercial banking 4 788 0 1,022 Other loans 0 4 0 8 Total $ 1,970 $ 1,354 $ 1,936 $ 1,599 % of Total loans 0.78 % 0.54 % 0.79 % 0.65 % __________ (1) Nonperfor ming loans generally include loans that have been placed on nonaccrual status. PCI loans are excluded from loans reported as 90 days or more past due and accruing interest as well as nonperforming loans. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for additional information on our policies for nonperforming loans.
Loans and Leases Receivable Disclosure [Line Items]
Individually Impaired Loans, Excluding Acquired Loans	The following table presents information about our impaired loans, excluding PCI loans, which are reported separately as of September 30, 2017 , and December 31, 2016 , and for the three and nine months ended September 30, 2017 and 2016 . Table 4.9 : Impaired Loans (1) September 30, 2017 (Dollars in millions) With an Allowance Without an Allowance Total Recorded Investment Related Allowance Net Recorded Investment Unpaid Principal Balance Credit Card: Domestic credit card $ 612 $ 0 $ 612 $ 207 $ 405 $ 598 International card businesses 165 0 165 81 84 160 Total credit card (2) 777 0 777 288 489 758 Consumer Banking: Auto (3) 353 134 487 32 455 738 Home loan 190 36 226 15 211 285 Retail banking 50 12 62 8 54 66 Total consumer banking 593 182 775 55 720 1,089 Commercial Banking: Commercial and multifamily real estate 142 25 167 10 157 168 Commercial and industrial 893 247 1,140 79 1,061 1,701 Total commercial lending 1,035 272 1,307 89 1,218 1,869 Small-ticket commercial real estate 7 0 7 0 7 9 Total commercial banking 1,042 272 1,314 89 1,225 1,878 Total $ 2,412 $ 454 $ 2,866 $ 432 $ 2,434 $ 3,725 December 31, 2016 (Dollars in millions) With an Allowance Without an Allowance Total Recorded Investment Related Allowance Net Recorded Investment Unpaid Principal Balance Credit Card: Domestic credit card $ 581 $ 0 $ 581 $ 174 $ 407 $ 566 International card businesses 134 0 134 65 69 129 Total credit card (2) 715 0 715 239 476 695 Consumer Banking: Auto (3) 316 207 523 24 499 807 Home loan 241 117 358 19 339 464 Retail banking 52 10 62 14 48 65 Total consumer banking 609 334 943 57 886 1,336 Commercial Banking: Commercial and multifamily real estate 83 29 112 7 105 112 Commercial and industrial 1,249 144 1,393 162 1,231 1,444 Total commercial lending 1,332 173 1,505 169 1,336 1,556 Small-ticket commercial real estate 4 0 4 0 4 4 Total commercial banking 1,336 173 1,509 169 1,340 1,560 Total $ 2,660 $ 507 $ 3,167 $ 465 $ 2,702 $ 3,591 Three Months Ended Nine Months Ended September 30, 2017 September 30, 2017 (Dollars in millions) Average Interest Average Interest Credit Card: Domestic credit card $ 601 $ 16 $ 593 $ 47 International card businesses 160 3 150 8 Total credit card (2) 761 19 743 55 Consumer Banking: Auto (3) 485 13 498 39 Home loan 288 2 316 4 Retail banking 60 0 59 1 Total consumer banking 833 15 873 44 Commercial Banking: Commercial and multifamily real estate 152 1 132 3 Commercial and industrial 1,130 5 1,220 13 Total commercial lending 1,282 6 1,352 16 Small-ticket commercial real estate 8 0 7 0 Total commercial banking 1,290 6 1,359 16 Total $ 2,884 $ 40 $ 2,975 $ 115 Three Months Ended Nine Months Ended September 30, 2016 September 30, 2016 (Dollars in millions) Average Interest Average Interest Credit Card: Domestic credit card $ 528 $ 15 $ 530 $ 43 International card businesses 135 3 132 8 Total credit card (2) 663 18 662 51 Consumer Banking: Auto (3) 498 21 495 64 Home loan 358 2 362 4 Retail banking 60 0 62 1 Total consumer banking 916 23 919 69 Commercial Banking: Commercial and multifamily real estate 128 0 111 2 Commercial and industrial 1,277 4 1,171 9 Total commercial lending 1,405 4 1,282 11 Small-ticket commercial real estate 8 0 8 0 Total commercial banking 1,413 4 1,290 11 Total $ 2,992 $ 45 $ 2,871 $ 131 __________ (1) Impaired loans include loans modified in troubled debt restructurings (“TDRs”), all nonperforming commercial loans and nonperforming home loans with a specific impairment. Impaired loans without an allowance generally represent loans that have been charged down to the fair value of the underlying collateral for which we believe no additional losses have been incurred, or where the fair value of the underlying collateral meets or exceeds the loan’s amortized cost. (2) The period-end and average recorded investments of credit card loans include finance charges and fees. (3) Although certain assets from loan recovery inventory are not reported in our loans held for investment, they are included as impaired loans above since they are reported as TD Rs.
TDR Disclosures in Progress Financial Impact of Modification	The following tables present the major modification types, recorded investment amounts and financial effects of loans modified in TDRs during the three and nine months ended September 30, 2017 and 2016 . Table 4.10 : Troubled Debt Restructurings Total Loans (1)(2) Three Months Ended September 30, 2017 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 107 100 % 14.51 % 0 % 0 0 % $ 0 International card businesses 41 100 26.71 0 0 0 0 Total credit card 148 100 17.85 0 0 0 0 Consumer Banking: Auto 104 35 3.78 99 5 0 0 Home loan 3 19 1.35 53 292 0 0 Retail banking 7 13 9.30 82 10 0 0 Total consumer banking 114 33 3.88 97 9 0 0 Commercial Banking: Commercial and multifamily real estate 3 0 0.00 100 6 0 0 Commercial and industrial 202 24 0.24 96 18 0 0 Total commercial lending 205 24 0.24 96 18 0 0 Small-ticket commercial real estate 1 0 0.00 12 0 0 0 Total commercial banking 206 24 0.24 96 18 0 0 Total $ 468 50 11.91 66 15 0 $ 0 Total Loans (1)(2) Nine Months Ended September 30, 2017 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 291 100 % 14.25 % 0 % 0 0 % $ 0 International card businesses 124 100 26.46 0 0 0 0 Total credit card 415 100 17.90 0 0 0 0 Consumer Banking: Auto 240 44 3.83 96 6 3 7 Home loan 17 49 2.44 79 234 2 0 Retail banking 13 21 5.56 73 10 0 0 Total consumer banking 270 44 3.77 94 18 3 7 Commercial Banking: Commercial and multifamily real estate 29 7 0.02 26 5 0 0 Commercial and industrial 483 15 0.81 59 18 0 0 Total commercial lending 512 15 0.79 57 18 0 0 Small-ticket commercial real estate 2 0 0.00 5 0 0 0 Total commercial banking 514 15 0.79 57 18 0 0 Total $ 1,199 51 13.04 45 18 0 $ 7 Total Loans (1)(2) Three Months Ended September 30, 2016 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 88 100 % 13.12 % 0 % 0 0 % $ 0 International card businesses 35 100 25.91 0 0 0 0 Total credit card 123 100 16.69 0 0 0 0 Consumer Banking: Auto 91 47 3.52 75 8 24 21 Home loan 13 71 2.18 90 241 2 0 Retail banking 9 11 10.44 61 9 0 0 Total consumer banking 113 47 3.41 75 38 20 21 Commercial Banking: Commercial and multifamily real estate 13 0 0.00 0 0 97 3 Commercial and industrial 257 1 0.15 49 10 19 26 Total commercial lending 270 1 0.15 47 10 23 29 Small-ticket commercial real estate 1 0 0.00 0 0 0 0 Total commercial banking 271 1 0.15 47 10 23 29 Total $ 507 35 12.55 42 21 17 $ 50 Total Loans (1)(2) Nine Months Ended September 30, 2016 Reduced Interest Rate Term Extension Balance Reduction (Dollars in millions) % of (3)(4) Average (5) % of (4)(6) Average (7) % of (4)(8) Gross (9) Credit Card: Domestic credit card $ 212 100 % 12.95 % 0 % 0 0 % $ 0 International card businesses 104 100 25.86 0 0 0 0 Total credit card 316 100 17.18 0 0 0 0 Consumer Banking: Auto 254 45 3.75 74 7 25 57 Home loan 38 62 2.37 86 247 2 0 Retail banking 16 23 7.90 65 9 11 1 Total consumer banking 308 46 3.62 75 41 22 58 Commercial Banking: Commercial and multifamily real estate 38 0 0.00 67 6 32 3 Commercial and industrial 558 6 0.09 54 17 9 26 Total commercial lending 596 5 0.09 55 16 10 29 Small-ticket commercial real estate 1 0 0.00 0 0 0 0 Total commercial banking 597 5 0.09 55 16 10 29 Total $ 1,221 40 12.17 46 26 11 $ 87 __________ (1) Represents the recorded investment of total loans modified in TDRs at the end of the quarter in which they were modified. (2) We present the modification types utilized most prevalently across our loan portfolios. As not every modification type is included in the table above, the total percentage of TDR activity may not add up to 100%. Some loans may receive more than one type of concession as part of the modification. (3) Represents percentage of loans modified in TDRs during the period that were granted a reduced interest rate. (4) Due to multiple concessions granted to some troubled borrowers, percentages may total more than 100% for certain loan types. (5) Represents weighted average interest rate reduction for those loans that received an interest rate concession. (6) Represents percentage of loans modified in TDRs during the period that were granted a maturity date extension. (7) Represents weighted average change in maturity date for those loans that received a maturity date extension. (8) Represents percentage of loans modified in TDRs during the period that were granted forgiveness or forbearance of a portion of their balance. (9) Represents the gross balance forgiven. For loans modified in bankruptcy, the gross balance reduction represents collateral value write-downs associated with the discharge of the borrower’s obligations. TDR—Subsequent Defaults of Completed TDR Modifications The following table presents the type, number and recorded investment amount of loans modified in TDRs that experienced a default during the period and had completed a modification event in the twelve months prior to the default. A default occurs if the loan is either 90 days or more delinquent, has been charged off as of the end of the period presented or has been reclassified from accrual to nonaccrual status. Table 4.11 : TDR — Subsequent Defaults Three Months Ended Nine Months Ended September 30, 2017 September 30, 2017 (Dollars in millions) Number of Amount Number of Amount Credit Card: Domestic credit card 13,528 $ 28 39,555 $ 79 International card businesses (1) 13,015 24 38,201 67 Total credit card 26,543 52 77,756 146 Consumer Banking: Auto 2,288 26 7,000 81 Home loan 5 0 24 6 Retail banking 9 1 29 4 Total consumer banking 2,302 27 7,053 91 Commercial Banking: Commercial and multifamily real estate 0 0 0 0 Commercial and industrial 141 103 176 211 Total commercial lending 141 103 176 211 Small-ticket commercial real estate 0 0 2 1 Total commercial banking 141 103 178 212 Total 28,986 $ 182 84,987 $ 449 Three Months Ended Nine Months Ended September 30, 2016 September 30, 2016 (Dollars in millions) Number of Amount Number of Amount Credit Card: Domestic credit card 9,138 $ 15 29,963 $ 49 International card businesses (1) 10,670 20 29,455 61 Total credit card 19,808 35 59,418 110 Consumer Banking: Auto 2,096 24 6,009 67 Home loan 17 2 40 5 Retail banking 12 4 37 7 Total consumer banking 2,125 30 6,086 79 Commercial Banking: Commercial and multifamily real estate 1 2 1 2 Commercial and industrial 22 108 42 145 Total commercial lending 23 110 43 147 Small-ticket commercial real estate 1 0 3 0 Total commercial banking 24 110 46 147 Total 21,957 $ 175 65,550 $ 336 __________ (1) In the U.K., regulators require the acceptance of payment plan proposals in which the modified payments may be less than the contractual minimum amount. As a result, loans entering long-term TDR payment programs in the U.K. typically continue to age and ultimately charge off even when fully in compliance with the TDR program terms.
Outstanding Balance and Carrying Value of Acquired Loans	The table below presents the outstanding balance and the carrying value of PCI loans as of September 30, 2017 and December 31, 2016 . The table also displays loans which would have otherwise been considered impaired at acquisition based on our applicable accounting policies. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for information related to our accounting policies for impaired loans. Table 4.12 : PCI Loans September 30, 2017 December 31, 2016 (Dollars in millions) Total PCI Loans Impaired Loans Non-Impaired Loans Total PCI Loans Impaired Loans Non-Impaired Loans Outstanding balance $ 13,255 $ 2,827 $ 10,428 $ 16,506 $ 3,272 $ 13,234 Carrying value (1) 11,981 1,966 10,015 15,074 2,263 12,811 __________ (1) Includes $38 million and $31 million of allowance for loan and lease losses for these loans as of September 30, 2017 and December 31, 2016 , respectively. We recorded a $7 million provision and a $9 million release for credit losses for the nine months ended September 30, 2017 and 2016 , respectively, for PCI loans.
Changes in Accretable Yield on Acquired Loans	The following table presents changes in the accretable yield on PCI loans: Table 4.13 : Changes in Accretable Yield on PCI Loans Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 (Dollars in millions) Total Impaired Loans Non-Impaired Loans Total PCI Loans Impaired Loans Non-Impaired Loans Accretable yield, beginning of period $ 2,691 $ 992 $ 1,699 $ 3,177 $ 1,064 $ 2,113 Accretion recognized in earnings (144 ) (54 ) (90 ) (465 ) (164 ) (301 ) Reclassifications from/(to) nonaccretable differences (1) 2 0 2 10 (10 ) 20 Changes in accretable yield for non-credit related changes in expected cash flows (2) (124 ) (32 ) (92 ) (297 ) 16 (313 ) Accretable yield, end of period $ 2,425 $ 906 $ 1,519 $ 2,425 $ 906 $ 1,519 __________ (1) Represents changes in accretable yield for those loans in pools that are driven primarily by credit performance. (2) Represents changes in accretable yield for those loans in pools that are driven primarily by actual prepayments and changes in estimated prepayments.
Credit Card Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Schedule of Concentration Risk, by Risk Factor, Including Delinquency and Performing Status	The table below displays the geographic profile of our credit card loan portfolio as of September 30, 2017 and December 31, 2016 . Table 4.3 : Credit Card Risk Profile by Geographic Region September 30, 2017 December 31, 2016 (Dollars in millions) Amount % of Total (1) Amount % of Total (1) Domestic credit card: California $ 10,946 10.0 % $ 11,068 10.5 % Texas 7,474 6.8 7,227 6.8 New York 7,069 6.5 7,090 6.7 Florida 6,453 5.9 6,540 6.2 Illinois 4,499 4.1 4,492 4.3 Pennsylvania 4,294 3.9 4,048 3.8 Ohio 3,689 3.4 3,654 3.5 New Jersey 3,441 3.2 3,488 3.3 Michigan 3,334 3.1 3,164 3.0 Other 48,782 44.7 46,349 43.9 Total domestic credit card 99,981 91.6 97,120 92.0 International card businesses: Canada 6,070 5.6 5,594 5.3 United Kingdom 3,079 2.8 2,838 2.7 Total international card businesses 9,149 8.4 8,432 8.0 Total credit card $ 109,130 100.0 % $ 105,552 100.0 % __________ (1) P ercentages by geographic region are calculated based on period-end amounts.
Schedule of Net Charge-Offs	The table below presents net charge-offs for the three and nine months ended September 30, 2017 and 2016 . Table 4.4 : Credit Card Net Charge-Offs Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in millions) Amount Rate (1) Amount Rate (1) Amount Rate (1) Amount Rate (1) Net charge-offs: (1) Domestic credit card (2) $ 1,087 4.64 % $ 841 3.74 % $ 3,455 4.96 % $ 2,602 3.99 % International card businesses 68 3.08 65 3.18 227 3.60 203 3.32 Total credit card (2) $ 1,155 4.51 $ 906 3.70 $ 3,682 4.85 $ 2,805 3.93 __________ (1) Net charge-offs consist of the unpaid principal balance that we determine to be uncollectible, net of recovered amounts. The net charge-off rate is calculated by dividing annualized net charge-offs by average balance of loans held for investment for the period for each loan category. Net charge-offs and the net charge-off rate are impacted periodically by fluctuations in recoveries, including loan sales. (2) On September 25, 2017, we completed the Cabela’s acquisition. The domestic credit card metrics reported above for the three and nine months ended September 30, 2017 include the impact of this acquisition. Excluding this impact (i) the total credit card and domestic credit card net charge-off rate for the three months ended September 30, 2017 would have been 4.52% and 4.66% , respectively; and (ii) the total credit card and domestic credit card net charge-off rate for the nine months ended September 30, 2017 would have been 4.85% and 4.97% , respectively.
Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Schedule of Concentration Risk, by Risk Factor, Including Delinquency and Performing Status	The table below displays the geographic profile of our consumer banking loan portfolio, including PCI loans as of September 30, 2017 and December 31, 2016 . Table 4.5 : Consumer Banking Risk Profile by Geographic Region September 30, 2017 December 31, 2016 (Dollars in millions) Amount % of Total (1) Amount % of Total (1) Auto: Texas $ 6,961 9.2 % $ 6,304 8.6 % California 6,052 8.0 5,448 7.5 Florida 4,402 5.8 3,985 5.5 Georgia 2,715 3.6 2,506 3.4 Ohio 2,265 3.0 2,017 2.8 Louisiana 2,260 3.0 2,159 3.0 Illinois 2,188 2.9 2,065 2.8 Other 26,447 35.0 23,432 32.0 Total auto 53,290 70.5 47,916 65.6 Home loan: California 4,115 5.4 4,993 6.8 New York 1,985 2.6 2,036 2.8 Maryland 1,287 1.7 1,409 1.9 Virginia 1,102 1.5 1,204 1.7 Illinois 1,053 1.4 1,218 1.7 New Jersey 1,000 1.3 1,112 1.5 Texas 883 1.2 823 1.1 Other 7,395 9.8 8,789 12.0 Total home loan 18,820 24.9 21,584 29.5 Retail banking: Louisiana 977 1.3 1,010 1.4 New York 934 1.2 941 1.3 Texas 718 1.0 756 1.0 New Jersey 219 0.3 238 0.3 Maryland 187 0.2 190 0.3 Virginia 154 0.2 156 0.2 Other 265 0.4 263 0.4 Total retail banking 3,454 4.6 3,554 4.9 Total consumer banking $ 75,564 100.0 % $ 73,054 100.0 % __________ (1) Pe rcentages by geographic region are calculated based on period-end amounts.
Schedule of Net Charge-Offs	The table below presents nonperforming loans in our consumer banking loan portfolio as of September 30, 2017 and December 31, 2016 , as well as net charge-offs for the three and nine months ended September 30, 2017 and 2016 . Table 4.6 : Consumer Banking Net Charge-Offs and Nonperforming Loans Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (Dollars in millions) Amount Rate (1) Amount Rate (1) Amount Rate (1) Amount Rate (1) Net charge-offs: Auto $ 257 1.96 % $ 210 1.85 % $ 671 1.77 % $ 508 1.55 % Home loan (2) 1 0.02 1 0.03 5 0.03 9 0.05 Retail banking 18 2.10 16 1.75 50 1.91 39 1.46 Total consumer banking (2) $ 276 1.47 $ 227 1.26 $ 726 1.30 $ 556 1.04 September 30, 2017 December 31, 2016 (Dollars in millions) Amount Rate (3) Amount Rate (3) Nonperforming loans: Auto $ 346 0.65 % $ 223 0.47 % Home loan (4) 158 0.84 273 1.26 Retail banking 33 0.97 31 0.86 Total consumer banking (4) $ 537 0.71 $ 527 0.72 __________ (1) The net charge-off rate is calculated by dividing annualized net charge-offs by average balance of loans held for investment for the period for each loan category. (2) Excluding the impact of PCI loans, the net charge-off rates for our home loan and total consumer banking portfolios were 0.06% and 1.74% , respectively, for the three months ended September 30, 2017 , compared to 0.08% and 1.62% , respectively, for the three months ended September 30, 2016 ; and 0.08% and 1.57% , respectively, for the nine months ended September 30, 2017 , compared to 0.18% and 1.37% , respectively, for the nine months ended September 30, 2016 . (3) Nonperforming loan rates are calculated based on nonperforming loans for each category divided by period-end total loans held for investment for each respective category. (4) Excluding the impact of PCI loans, the nonperforming loan rates for our home loan and total consumer banking portfolios were 2.13% and 0.84% , respectively, as of September 30, 2017 , compared to 3.81% and 0.90% , respectively, as of December 31, 2016 .
Consumer Portfolio Segment [Member] | Home loan
Loans and Leases Receivable Disclosure [Line Items]
Schedule of Concentration of Risk, by Risk Factor	The following table presents the distribution of our home loan portfolio as of September 30, 2017 and December 31, 2016 , based on selected key risk characteristics. Table 4.7 : Home Loan Risk Profile by Vintage, Geography, Lien Priority and Interest Rate Type September 30, 2017 Loans PCI Loans (1) Total Home Loans (Dollars in millions) Amount % of Total (2) Amount % of Total (2) Amount % of Total (2) Origination year: (3) < = 2008 $ 1,689 9.0 % $ 7,808 41.5 % $ 9,497 50.5 % 2009 65 0.3 833 4.5 898 4.8 2010 66 0.4 1,172 6.2 1,238 6.6 2011 120 0.6 1,272 6.8 1,392 7.4 2012 727 3.9 192 1.0 919 4.9 2013 402 2.1 48 0.3 450 2.4 2014 491 2.6 28 0.1 519 2.7 2015 936 5.0 28 0.1 964 5.1 2016 1,647 8.7 23 0.1 1,670 8.8 2017 1,247 6.7 26 0.1 1,273 6.8 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % Geographic concentration: (4) California $ 999 5.3 % $ 3,116 16.6 % $ 4,115 21.9 % New York 1,400 7.4 585 3.1 1,985 10.5 Maryland 610 3.2 677 3.6 1,287 6.8 Virginia 538 2.9 564 3.0 1,102 5.9 Illinois 154 0.8 899 4.8 1,053 5.6 New Jersey 391 2.1 609 3.2 1,000 5.3 Texas 804 4.3 79 0.4 883 4.7 Louisiana 848 4.5 19 0.1 867 4.6 Florida 184 1.0 618 3.3 802 4.3 Arizona 94 0.5 634 3.4 728 3.9 Other 1,368 7.3 3,630 19.2 4,998 26.5 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % Lien type: 1 st lien $ 6,414 34.1 % $ 11,193 59.5 % $ 17,607 93.6 % 2 nd lien 976 5.2 237 1.2 1,213 6.4 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % Interest rate type: Fixed rate $ 3,725 19.8 % $ 1,653 8.8 % $ 5,378 28.6 % Adjustable rate 3,665 19.5 9,777 51.9 13,442 71.4 Total $ 7,390 39.3 % $ 11,430 60.7 % $ 18,820 100.0 % December 31, 2016 Loans PCI Loans (1) Total Home Loans (Dollars in millions) Amount % of Total (2) Amount % of Total (2) Amount % of Total (2) Origination year: (3) < = 2008 $ 2,166 10.0 % $ 9,684 44.9 % $ 11,850 54.9 % 2009 80 0.4 1,088 5.0 1,168 5.4 2010 82 0.4 1,562 7.2 1,644 7.6 2011 139 0.6 1,683 7.8 1,822 8.4 2012 969 4.5 268 1.2 1,237 5.7 2013 465 2.2 59 0.2 524 2.4 2014 557 2.6 31 0.2 588 2.8 2015 1,024 4.7 30 0.2 1,054 4.9 2016 1,674 7.8 23 0.1 1,697 7.9 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % Geographic concentration: (4) California $ 976 4.5 % $ 4,017 18.6 % $ 4,993 23.1 % New York 1,343 6.2 693 3.2 2,036 9.4 Maryland 585 2.7 824 3.9 1,409 6.6 Illinois 108 0.5 1,110 5.1 1,218 5.6 Virginia 490 2.3 714 3.3 1,204 5.6 New Jersey 379 1.8 733 3.4 1,112 5.2 Louisiana 962 4.5 23 0.1 985 4.6 Florida 159 0.7 772 3.6 931 4.3 Arizona 89 0.4 799 3.7 888 4.1 Texas 725 3.4 98 0.4 823 3.8 Other 1,340 6.2 4,645 21.5 5,985 27.7 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % Lien type: 1 st lien $ 6,182 28.7 % $ 14,159 65.5 % $ 20,341 94.2 % 2 nd lien 974 4.5 269 1.3 1,243 5.8 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % Interest rate type: Fixed rate $ 3,394 15.8 % $ 1,822 8.4 % $ 5,216 24.2 % Adjustable rate 3,762 17.4 12,606 58.4 16,368 75.8 Total $ 7,156 33.2 % $ 14,428 66.8 % $ 21,584 100.0 % __________ (1) The PCI loan balances with an origination date in the years subsequent to 2012 represent refinancing of previously acquired home loans. (2) Percentages within each risk category are calculated based on period-end amounts. (3) Modified loans are reported in the origination year of the initial borrowing. (4) States listed represent those that have the highest individual concentration of home loans.
Commercial Banking
Loans and Leases Receivable Disclosure [Line Items]
Schedule of Concentration of Risk, by Risk Factor	The following table presents the geographic distribution and internal risk ratings of our commercial loan portfolio as of September 30, 2017 and December 31, 2016 . Table 4.8 : Commercial Banking Risk Profile by Geographic Region and Internal Risk Rating September 30, 2017 (Dollars in millions) Commercial and Multifamily Real Estate % of Total (1) Commercial and Industrial % of Total (1) Small-Ticket Commercial Real Estate % of Total (1) Total Commercial Banking % of Total (1) Geographic concentration: (2) Northeast $ 16,302 58.4 % $ 8,498 21.6 % $ 259 61.7 % $ 25,059 37.1 % Mid-Atlantic 3,132 11.2 3,838 9.8 15 3.6 6,985 10.3 South 3,692 13.2 14,991 38.1 27 6.4 18,710 27.6 Other 4,818 17.2 11,979 30.5 119 28.3 16,916 25.0 Total $ 27,944 100.0 % $ 39,306 100.0 % $ 420 100.0 % $ 67,670 100.0 % Internal risk rating: (3) Noncriticized $ 27,369 98.0 % $ 35,721 90.9 % $ 411 97.8 % $ 63,501 93.8 % Criticized performing 486 1.7 2,390 6.1 2 0.5 2,878 4.3 Criticized nonperforming 64 0.2 717 1.8 7 1.7 788 1.2 PCI loans 25 0.1 478 1.2 0 0.0 503 0.7 Total $ 27,944 100.0 % $ 39,306 100.0 % $ 420 100.0 % $ 67,670 100.0 % December 31, 2016 (Dollars in millions) Commercial and Multifamily Real Estate % of Total (1) Commercial and Industrial % of Total (1) Small-Ticket Commercial Real Estate % of Total (1) Total Commercial Banking % of Total (1) Geographic concentration: (2) Northeast $ 15,714 59.0 % $ 9,628 24.2 % $ 298 61.7 % $ 25,640 38.3 % Mid-Atlantic 3,024 11.4 3,450 8.7 16 3.3 6,490 9.7 South 4,032 15.2 15,193 38.1 34 7.0 19,259 28.8 Other 3,839 14.4 11,553 29.0 135 28.0 15,527 23.2 Total $ 26,609 100.0 % $ 39,824 100.0 % $ 483 100.0 % $ 66,916 100.0 % Internal risk rating: (3) Noncriticized $ 26,309 98.9 % $ 36,046 90.5 % $ 473 97.9 % $ 62,828 93.9 % Criticized performing 242 0.9 2,205 5.5 6 1.3 2,453 3.7 Criticized nonperforming 30 0.1 988 2.5 4 0.8 1,022 1.5 PCI loans 28 0.1 585 1.5 0 0.0 613 0.9 Total $ 26,609 100.0 % $ 39,824 100.0 % $ 483 100.0 % $ 66,916 100.0 % __________ (1) Percentages calculated based on total loans held for investment in each respective loan category using period-end amounts. (2) Geographic concentration is generally determined by the location of the borrower’s business or the location of the collateral associated with the loan. Northeast consists of CT, MA, ME, NH, NJ, NY, PA and VT. Mid-Atlantic consists of DC, DE, MD, VA and WV. South consists of AL, AR, FL, GA, KY, LA, MO, MS, NC, SC, TN and TX. (3) Criticized exposures correspond to the “Special Mention,” “Substandard” and “Doubtful” asset c ategories defined by banking regulatory authorities.

Allowance for Loan and Lease 26

Allowance for Loan and Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Allowance for Credit Losses on Financing Receivables	The table below presents the components of our allowance for loan and lease losses by portfolio segment and impairment methodology with the recorded investment of the related loans as of September 30, 2017 and December 31, 2016 . Table 5.2 : Components of Allowance for Loan and Lease Losses by Impairment Methodology September 30, 2017 (Dollars in millions) Credit Card Consumer Banking Commercial Banking Other Total Allowance for loan and lease losses: Collectively evaluated (1) $ 5,246 $ 1,125 $ 575 $ 2 $ 6,948 Asset-specific (2) 288 55 89 0 432 PCI loans (3) 0 33 5 0 38 Total allowance for loan and lease losses $ 5,534 $ 1,213 $ 669 $ 2 $ 7,418 Loans held for investment: Collectively evaluated (1) $ 108,322 $ 63,432 $ 65,853 $ 58 $ 237,665 Asset-specific (2) 777 681 1,314 0 2,772 PCI loans (3) 31 11,451 503 0 11,985 Total loans held for investment $ 109,130 $ 75,564 $ 67,670 $ 58 $ 252,422 Allowance coverage ratio (4) 5.07 % 1.61 % 0.99 % 3.45 % 2.94 % December 31, 2016 (Dollars in millions) Credit Consumer Banking Commercial Banking Other Total Allowance for loan and lease losses: Collectively evaluated (1) $ 4,367 $ 1,016 $ 622 $ 2 $ 6,007 Asset-specific (2) 239 57 169 0 465 PCI loans (3) 0 29 2 0 31 Total allowance for loan and lease losses $ 4,606 $ 1,102 $ 793 $ 2 $ 6,503 Loans held for investment: Collectively evaluated (1) $ 104,835 $ 57,862 $ 64,794 $ 64 $ 227,555 Asset-specific (2) 715 736 1,509 0 2,960 PCI loans (3) 2 14,456 613 0 15,071 Total loans held for investment $ 105,552 $ 73,054 $ 66,916 $ 64 $ 245,586 Allowance coverage ratio (4) 4.36 % 1.51 % 1.19 % 3.13 % 2.65 % __________ (1) The component of the allowance for loan and lease losses for credit card and other consumer loans that we collectively evaluate for impairment is based on a statistical calculation supplemented by management judgment and interpretation. The component of the allowance for loan and lease losses for commercial loans that we collectively evaluate for impairment is based on historical loss experience for loans with similar characteristics and consideration of credit quality supplemented by management judgment and interpretation. (2) The asset-specific component of the allowance for loan and lease losses for smaller-balance impaired loans is calculated on a pool basis using historical loss experience for the respective class of assets. The asset-specific component of the allowance for loan and lease losses for larger-balance commercial loans is individually calculated for each loan. (3) The PCI loans component of the allowance for loan and lease losses is accounted for based on expected cash flows. See “ Note 1—Summary of Significant Accounting Policies ” in our 2016 Form 10-K for details on these loans. (4) Allowance coverage ratio is calculated by dividing the period-end allowance for loan and lease losses by period-end loans held for investment within the specified loan category. The table below summarizes changes in the allowance for loan and lease losses and reserve for unfunded lending commitments by portfolio segment for the three and nine months ended September 30, 2017 and 2016 . Table 5.1 : Allowance for Loan and Lease Losses and Reserve for Unfunded Lending Commitments Activity Three Months Ended September 30, 2017 (Dollars in millions) Credit Card Consumer Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of June 30, 2017 $ 5,210 $ 1,199 $ 758 $ 3 $ 7,170 Charge-offs (1,471 ) (435 ) (168 ) (36 ) (2,110 ) Recoveries 316 159 5 24 504 Net charge-offs (1,155 ) (276 ) (163 ) (12 ) (1,606 ) Provision for loan and lease losses 1,466 292 75 11 1,844 Allowance build (release) for loan and lease losses 311 16 (88 ) (1 ) 238 Other changes (2) 13 (2 ) (1 ) 0 10 Balance as of September 30, 2017 5,534 1,213 669 2 7,418 Reserve for unfunded lending commitments: Balance as of June 30, 2017 0 7 132 0 139 Provision (benefit) for losses on unfunded lending commitments 0 1 (12 ) 0 (11 ) Balance as of September 30, 2017 0 8 120 0 128 Combined allowance and reserve as of September 30, 2017 $ 5,534 $ 1,221 $ 789 $ 2 $ 7,546 Nine Months Ended September 30, 2017 (Dollars in millions) Credit Card Consumer Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of December 31, 2016 $ 4,606 $ 1,102 $ 793 $ 2 $ 6,503 Charge-offs (4,644 ) (1,189 ) (334 ) (36 ) (6,203 ) Recoveries 962 463 12 32 1,469 Net charge-offs (3,682 ) (726 ) (322 ) (4 ) (4,734 ) Provision for loan and lease losses 4,580 839 210 4 5,633 Allowance build (release) for loan and lease losses 898 113 (112 ) 0 899 Other changes (2) 30 (2 ) (12 ) 0 16 Balance as of September 30, 2017 5,534 1,213 669 2 7,418 Reserve for unfunded lending commitments: Balance as of December 31, 2016 0 7 129 0 136 Provision (benefit) for losses on unfunded lending commitments 0 1 (9 ) 0 (8 ) Balance as of September 30, 2017 0 8 120 0 128 Combined allowance and reserve as of September 30, 2017 $ 5,534 $ 1,221 $ 789 $ 2 $ 7,546 Three Months Ended September 30, 2016 (Dollars in millions) Credit Card Consumer Banking Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of June 30, 2016 $ 4,086 $ 972 $ 821 $ 2 $ 5,881 Charge-offs (1,171 ) (323 ) (112 ) 0 (1,606 ) Recoveries 265 96 4 1 366 Net charge-offs (906 ) (227 ) (108 ) 1 (1,240 ) Provision (benefit) for loan and lease losses 1,272 258 96 (1 ) 1,625 Allowance build (release) for loan and lease losses 366 31 (12 ) 0 385 Other changes (2) (7 ) 0 (1 ) 0 (8 ) Balance as of September 30, 2016 4,445 1,003 808 2 6,258 Reserve for unfunded lending commitments: Balance as of June 30, 2016 0 8 161 0 169 Provision (benefit) for losses on unfunded lending commitments 0 (2 ) (35 ) 0 (37 ) Balance as of September 30, 2016 0 6 126 0 132 Combined allowance and reserve as of September 30, 2016 $ 4,445 $ 1,009 $ 934 $ 2 $ 6,390 Nine Months Ended September 30, 2016 (Dollars in millions) Credit Card Consumer Banking Commercial Banking Other (1) Total Allowance for loan and lease losses: Balance as of December 31, 2015 $ 3,654 $ 868 $ 604 $ 4 $ 5,130 Charge-offs (3,608 ) (862 ) (224 ) (2 ) (4,696 ) Recoveries 803 306 10 4 1,123 Net charge-offs (2,805 ) (556 ) (214 ) 2 (3,573 ) Provision (benefit) for loan and lease losses 3,604 691 452 (4 ) 4,743 Allowance build (release) for loan and lease losses 799 135 238 (2 ) 1,170 Other changes (2) (8 ) 0 (34 ) 0 (42 ) Balance as of September 30, 2016 4,445 1,003 808 2 6,258 Reserve for unfunded lending commitments: Balance as of December 31, 2015 0 7 161 0 168 Provision (benefit) for losses on unfunded lending commitments 0 (1 ) (35 ) 0 (36 ) Balance as of September 30, 2016 0 6 126 0 132 Combined allowance and reserve as of September 30, 2016 $ 4,445 $ 1,009 $ 934 $ 2 $ 6,390 __________ (1) Primarily consists of the legacy loan portfolio of our discontinued GreenPoint mortgage operations. (2) Represents foreign currency translation adjustments and the net impact of loan transfers and sales.
Schedule of Loss sharing arrangement impact	The table below summarizes the changes in the estimated reimbursements from these partners for the three and nine months ended September 30, 2017 and 2016 . Table 5.3 : Summary of Loss Sharing Arrangements Impacts Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Estimated reimbursements from loss sharing partners: Balance as of beginning of the period $ 263 $ 219 $ 228 $ 194 Impact to net charge-offs (66 ) (56 ) (198 ) (161 ) Impact to provision for credit losses 135 64 302 194 Balance as of end of the period $ 332 $ 227 $ 332 $ 227

Variable Interest Entities an27

Variable Interest Entities and Securitizations (Tables)	9 Months Ended
	Sep. 30, 2017
Variable Interest Entities and Securitization [Abstract]
Carrying Amount of Assets and Liabilities of Variable Interest Entities	The table below presents a summary of certain VIEs in which we had continuing involvement or held a variable interest, aggregated based on VIEs with similar characteristics as of September 30, 2017 and December 31, 2016 . We separately present information for consolidated and unconsolidated VIEs. Table 6.1 : Carrying Amount of Consolidated and Unconsolidated VIEs September 30, 2017 Consolidated Unconsolidated (Dollars in millions) Carrying Amount of Assets Carrying Amount of Liabilities Carrying Amount of Assets Carrying Amount of Liabilities Maximum Exposure to Loss Securitization-Related VIEs: Credit card loan securitizations (1) $ 34,230 $ 17,654 $ 0 $ 0 $ 0 Home loan securitizations (2) 0 0 178 89 1,105 Total securitization-related VIEs 34,230 17,654 178 89 1,105 Other VIEs: (3) Affordable housing entities 221 18 4,237 1,316 4,237 Entities that provide capital to low-income and rural communities 1,321 128 0 0 0 Other 0 0 314 0 314 Total other VIEs 1,542 146 4,551 1,316 4,551 Total VIEs $ 35,772 $ 17,800 $ 4,729 $ 1,405 $ 5,656 December 31, 2016 Consolidated Unconsolidated (Dollars in millions) Carrying Amount of Assets Carrying Amount of Liabilities Carrying Amount of Assets Carrying Amount of Liabilities Maximum Exposure to Loss Securitization-Related VIEs: Credit card loan securitizations (1) $ 33,550 $ 19,662 $ 0 $ 0 $ 0 Home loan securitizations (2) 0 0 201 27 1,276 Total securitization-related VIEs 33,550 19,662 201 27 1,276 Other VIEs: (3) Affordable housing entities 174 9 3,862 1,093 3,862 Entities that provide capital to low-income and rural communities 927 127 0 0 0 Other 0 0 187 0 187 Total other VIEs 1,101 136 4,049 1,093 4,049 Total VIEs $ 34,651 $ 19,798 $ 4,250 $ 1,120 $ 5,325 __________ (1) Represents the carrying amount of assets and liabilities owned by the VIE, which includes the seller’s interest and repurchased notes held by other related parties. (2) The carrying amount of assets of unconsolidated securitization-related VIEs consists of retained interests associated with the securitization of option-adjustable rate mortgage (“option-ARM”) loans and letters of credit related to manufactured housing securitizations. These are reported on our consolidated balance sheets within other assets. The carrying amount of liabilities of unconsolidated securitization-related VIEs is comprised of obligations on certain swap agreements associated with the securitizations of manufactured housing loans and other obligations. These are reported on our consolidated balance sheets within other liabilities. (3) In certain investment structures, we consolidate a VIE which in turn holds as its primary asset an investment in an unconsolidated VIE. In these instances, we disclose the carrying amount of assets and liabilities on our consolidated balance sheets in the unconsolidated VIEs to avoid duplicating our exposure, as the unconsolidated VIEs are generally the operating entities generating the exposure. The carrying amount of assets and liabilities included in the unconsolidated VIE columns above related to these investment structures were $2.2 billion of assets and $898 million of liabilities as of September 30, 2017 and $1.9 billion of assets and $618 million of liabilities as of December 31, 2016 .
External Debt and Receivable Balances of Securitization Programs	The table below presents our continuing involvement in certain securitization-related VIEs as of September 30, 2017 and December 31, 2016 . Table 6.2 : Continuing Involvement in Securitization-Related VIEs Mortgage (Dollars in millions) Credit Card Option- ARM GreenPoint HELOCs GreenPoint Manufactured Housing September 30, 2017: Securities held by third-party investors $ 17,087 $ 1,288 $ 44 $ 599 Receivables in the trust 34,763 1,331 38 603 Cash balance of spread or reserve accounts 0 8 N/A 121 Retained interests Yes Yes Yes Yes Servicing retained Yes Yes (1) No No (2) Amortization event (3) No No No No December 31, 2016: Securities held by third-party investors $ 18,826 $ 1,499 $ 56 $ 697 Receivables in the trust 31,762 1,549 50 702 Cash balance of spread or reserve accounts 0 8 N/A 130 Retained interests Yes Yes Yes Yes Servicing retained Yes Yes (1) No No (2) Amortization event (3) No No No No __________ (1) We continue to service certain option-ARM securitizations. (2) The core servicing activities for the manufactured housing securitizations are completed by a third party. (3) Amortization events vary according to each specific trust agreement but generally are triggered by declines in performance or credit metrics of the underlying assets, such as net charge-off rates or delinquency rates, beyond certain predetermined thresholds. Generally, the occurrence of an amortization event changes the sequencing and amount of trust-related cash flows to the benefit of more senior interest holders.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Components of Goodwill, Intangible Assets and MSRs	The table below displays the components of goodwill, intangible assets and MSRs as of September 30, 2017 and December 31, 2016 . Goodwill is presented separately on our consolidated balance sheets. Intangible assets and MSRs are included in other assets on our consolidated balance sheets. Table 7.1 : Components of Goodwill, Intangible Assets and MSRs September 30, 2017 (Dollars in millions) Carrying (1) Accumulated Amortization (1) Net Goodwill $ 14,532 N/A $ 14,532 Intangible assets: Purchased credit card relationship (“PCCR”) intangibles 2,105 $ (1,800 ) 305 Core deposit intangibles 1,391 (1,368 ) 23 Other (2) 299 (146 ) 153 Total intangible assets 3,795 (3,314 ) 481 Total goodwill and intangible assets $ 18,327 $ (3,314 ) $ 15,013 MSRs: Consumer MSRs (3) $ 90 N/A $ 90 Commercial MSRs (4) 327 $ (112 ) 215 Total MSRs $ 417 $ (112 ) $ 305 December 31, 2016 (Dollars in millions) Carrying (1) Accumulated Amortization (1) Net Goodwill $ 14,519 N/A $ 14,519 Intangible assets: PCCR intangibles 2,151 $ (1,715 ) 436 Core deposit intangibles 1,391 (1,345 ) 46 Other (2) 314 (131 ) 183 Total intangible assets 3,856 (3,191 ) 665 Total goodwill and intangible assets $ 18,375 $ (3,191 ) $ 15,184 MSRs: Consumer MSRs (3) $ 80 N/A $ 80 Commercial MSRs (4) 276 $ (82 ) 194 Total MSRs $ 356 $ (82 ) $ 274 __________ (1) Certain intangible assets that were fully amortized in prior periods were removed from our consolidated balance sheets. (2) Primarily consists of intangibles for sponsorship relationships, brokerage relationship intangibles, partnership and other contract intangibles and trade name intangibles. (3) Represents MSRs related to our Consumer Banking business that are carried at fair value on our consolidated balance sheets. (4) Represents MSRs related to our Commercial Banking business that are subsequently accounted for under the amortization method and periodically assessed for impairment.
Goodwill Attributable to Business Segments	The following table presents changes in the carrying amount of goodwill as well as goodwill attributable to each of our business segments as of September 30, 2017 and December 31, 2016 . Table 7.2 : Goodwill Attributable to Business Segments (Dollars in millions) Credit Card Consumer Banking Commercial Banking Total Balance as of December 31, 2016 $ 5,018 $ 4,600 $ 4,901 $ 14,519 Acquisitions 6 0 0 6 Other adjustments (1) 7 0 0 7 Balance as of September 30, 2017 $ 5,031 $ 4,600 $ 4,901 $ 14,532 __________ (1) Represents foreign currency translation adjustments.

Deposits and Borrowings (Tables

Deposits and Borrowings (Tables)	9 Months Ended
	Sep. 30, 2017
Deposits and Borrowings [Abstract]
Components of Deposits, Short-term Borrowings and Long-term Debt	The table below summarizes the components of our deposits, short-term borrowings and long-term debt as of September 30, 2017 and December 31, 2016 . Our total short-term borrowings consist of federal funds purchased and securities loaned or sold under agreements to repurchase. Our long-term debt consists of borrowings with an original contractual maturity of greater than one year. The carrying value presented below for these borrowings include unamortized debt premiums and discounts, net of debt issuance costs and fair value hedge accounting adjustments. Table 8.1 : Components of Deposits, Short-Term Borrowings and Long-Term Debt (Dollars in millions) September 30, December 31, Deposits: Non-interest-bearing deposits $ 26,106 $ 25,502 Interest-bearing deposits 212,956 211,266 Total deposits $ 239,062 $ 236,768 Short-term borrowings: Federal funds purchased and securities loaned or sold under agreements to repurchase $ 767 $ 992 Total short-term borrowings $ 767 $ 992 September 30, 2017 (Dollars in millions) Maturity Dates Interest Rates Weighted- Average Interest Rate Carrying Value December 31, Long-term debt: Securitized debt obligations (1) 2018 - 2025 1.33 - 2.75% 1.77 $ 17,087 $ 18,826 Senior and subordinated notes: (1) Fixed unsecured senior debt 2018 - 2027 1.50 - 4.75 2.69 20,815 17,546 Floating unsecured senior debt 2018 - 2023 1.99 - 2.46 2.19 3,047 1,353 Total unsecured senior debt 2.63 23,862 18,899 Fixed unsecured subordinated debt 2019 - 2026 3.38 - 8.80 4.09 4,558 4,532 Total senior and subordinated notes 28,420 23,431 Other long-term borrowings: FHLB advances 2017 - 2023 1.21 - 5.43 1.23 13,136 17,179 Capital lease obligations 2022 - 2035 2.50 - 12.86 5.75 48 32 Total other long-term borrowings 13,184 17,211 Total long-term debt $ 58,691 $ 59,468 Total short-term borrowings and long-term debt $ 59,458 $ 60,460 __________ (1) Carrying value includes fair value hedge accounting adjustments.
Schedule of Components of Interest Expense on Short-Term Borrowings and Long-Term Debt	The following table displays interest expense attributable to short-term borrowings and long-term debt for the three and nine months ended September 30, 2017 and 2016 : Table 8.2 : Components of Interest Expense on Short-Term Borrowings and Long-Term Debt Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Short-term borrowings: Federal funds purchased and securities loaned or sold under agreements to repurchase $ 1 $ 0 $ 3 $ 2 Total short-term borrowings 1 0 3 2 Long-term debt: Securitized debt obligations (1) 85 56 236 151 Senior and subordinated notes (1) 194 121 522 338 Other long-term borrowings 30 34 65 84 Total long-term debt 309 211 823 573 Total interest expense on short-term borrowings and long-term debt $ 310 $ 211 $ 826 $ 575 _ _________ (1) Interest expense includes the impact from qualifying hedge accounting relationships.

Derivative Instruments and He30

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional and Fair Values of Derivative Instruments	The following table summarizes the notional and fair values of our derivative instruments as of September 30, 2017 and December 31, 2016 , which are segregated by derivatives that are designated as accounting hedges and those that are not, and are further segregated by type of contract within those two categories. The total derivative assets and liabilities are adjusted on an aggregate basis to take into consideration the effects of legally enforceable master netting agreements and any associated cash collateral received or pledged. Table 9.1 : Derivative Assets and Liabilities at Fair Value September 30, 2017 December 31, 2016 Notional or Contractual Amount Derivative (1)(5) Notional or Contractual Amount Derivative (1) (Dollars in millions) Assets Liabilities Assets Liabilities Derivatives designated as accounting hedges: Interest rate contracts: Fair value hedges $ 51,645 $ 78 $ 79 $ 40,480 $ 295 $ 569 Cash flow hedges 65,700 30 96 50,400 151 287 Total interest rate contracts 117,345 108 175 90,880 446 856 Foreign exchange contracts: Cash flow hedges 5,833 10 228 5,620 108 9 Net investment hedges 2,849 0 172 2,396 163 0 Total foreign exchange contracts 8,682 10 400 8,016 271 9 Total derivatives designated as accounting hedges 126,027 118 575 98,896 717 865 Derivatives not designated as accounting hedges: Interest rate contracts covering: MSRs (2) 1,639 8 4 1,696 17 21 Customer accommodation 45,886 570 435 39,474 670 530 Other interest rate exposures (3) 4,914 49 12 1,105 33 8 Total interest rate contracts 52,439 627 451 42,275 720 559 Other contracts 1,053 0 5 1,767 57 14 Total derivatives not designated as accounting hedges 53,492 627 456 44,042 777 573 Total derivatives $ 179,519 $ 745 $ 1,031 $ 142,938 $ 1,494 $ 1,438 Less: netting adjustment (4) (236 ) (598 ) (539 ) (336 ) Total derivative assets/liabilities $ 509 $ 433 $ 955 $ 1,102 __________ (1) Derivative assets and liabilities presented above exclude valuation adjustments related to non-performance risk. As of September 30, 2017 and December 31, 2016 , the cumulative CVA balances were $4 million and $6 million , respectively, and the cumulative DVA balances were less than $1 million as of both September 30, 2017 and December 31, 2016 . (2) Includes interest rate swaps and to-be-announced contracts. (3) Includes mortgage-related derivatives. (4) Represents balance sheet netting of derivative assets and liabilities, and related payables and receivables for cash collateral held or placed with the same counterparty. See Table 9.2 for further information. (5) Reflects a reduction of derivative assets of $23 million and a reduction of derivative liabilities of $500 million on our consolidated balance sheets as of September 30, 2017 as a result of adoption of the CME variation margin rule change in
Offsetting Assets	The following table presents as of September 30, 2017 and December 31, 2016 the gross and net fair values of our derivative assets and liabilities and repurchase agreements, as well as the related offsetting amounts permitted under U.S. GAAP. The table also includes cash and non-cash collateral received or pledged associated with such arrangements. The collateral amounts shown are limited to the extent of the related net derivative fair values or outstanding balances, thus instances of over-collateralization are not shown. Table 9.2 : Offsetting of Financial Assets and Financial Liabilities Gross Amounts Gross Amounts Offset in the Balance Sheet Net Amounts as Recognized Securities Collateral Held Under Master Netting Agreements (Dollars in millions) Financial Instruments Cash Collateral Received Net Exposure As of September 30, 2017 Derivatives assets (1)(2) $ 745 $ (187 ) $ (49 ) $ 509 $ 0 $ 509 As of December 31, 2016 Derivatives assets (1)(2) 1,494 (152 ) (387 ) 955 (11 ) 944
Offsetting Liabilities	Gross Amounts Gross Amounts Offset in the Balance Sheet Net Amounts as Recognized Securities Collateral Pledged Under Master Netting Agreements (Dollars in millions) Financial Instruments Cash Collateral Pledged Net Exposure As of September 30, 2017 Derivatives liabilities (1)(2) $ 1,031 $ (187 ) $ (411 ) $ 433 $ 0 $ 433 Repurchase agreements (3) 767 0 0 767 (767 ) 0 As of December 31, 2016 Derivatives liabilities (1)(2) 1,438 (152 ) (184 ) 1,102 0 1,102 Repurchase agreements 992 0 0 992 (992 ) 0 __________ (1) Reflects a reduction of derivative assets of $23 million and a reduction of derivative liabilities of $500 million on our consolidated balance sheets as of September 30, 2017 as a result of adoption of the CME variation margin rule change in the second quarter of 2017. (2) We received cash collateral from derivative counterparties totaling $51 million and $448 million as of September 30, 2017 and December 31, 2016 , respectively. We also received securities from derivative counterparties with a fair value of $1 million and $16 million as of September 30, 2017 and December 31, 2016 , respectively, which we have the ability to re-pledge. We posted $914 million and $1.5 billion of cash collateral as of September 30, 2017 and December 31, 2016 , respectively. (3) Represents customer repurchase agreements that mature the next business day. As of September 30, 2017 , we pledged collateral with a fair value of $782 million under these customer repurchase agreements, which were primarily agency RMBS securities.
Fair Value Hedging and Free-Standing Derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss)	The net gains (losses) recognized in earnings related to derivatives in fair value hedging relationships and free-standing derivatives are presented below for the three and nine months ended September 30, 2017 and 2016 . Table 9.3 : Gains and Losses on Fair Value Hedges and Free-Standing Derivatives Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Derivatives designated as accounting hedges: (1)(2) Fair value interest rate contracts: Gains (losses) recognized in earnings on derivatives $ (23 ) $ (219 ) $ 70 $ 171 Gains (losses) recognized in earnings on hedged items 19 220 (74 ) (147 ) Net fair value hedge ineffectiveness gains (losses) (4 ) 1 (4 ) 24 Derivatives not designated as accounting hedges: (1) Interest rate contracts covering: MSRs 1 3 4 21 Customer accommodation 11 10 27 22 Other interest rate exposures 24 26 45 57 Total interest rate contracts 36 39 76 100 Other contracts 0 0 0 (9 ) Total gains on derivatives not designated as accounting hedges 36 39 76 91 Net derivative gains recognized in earnings $ 32 $ 40 $ 72 $ 115 __________ (1) Amounts are recorded in our consolidated statements of income in other non-interest income. (2) The accrued interest income (expense) on fair value hedges is recorded in net interest income (expense) and is excluded from this table.
Cash Flow Hedging and Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss)	The table below shows the net gains (losses) related to derivatives designated as cash flow hedges and net investment hedges for the three and nine months ended September 30, 2017 and 2016 . Table 9.4 : Gains and Losses on Derivatives Designated as Cash Flow Hedges and Net Investment Hedges Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Gains (losses) recorded in AOCI: Cash flow hedges: Interest rate contracts $ (2 ) $ (94 ) $ 37 $ 524 Foreign exchange contracts 5 1 14 1 Subtotal 3 (93 ) 51 525 Net investment hedges: Foreign exchange contracts (49 ) 39 (129 ) 202 Net derivatives gains (losses) recognized in AOCI $ (46 ) $ (54 ) $ (78 ) $ 727 Gains (losses) recorded in earnings: Cash flow hedges: Gains (losses) reclassified from AOCI into earnings: Interest rate contracts (1) $ 15 $ 48 $ 76 $ 146 Foreign exchange contracts (2) 5 1 13 1 Subtotal 20 49 89 147 Gains (losses) recognized in earnings due to ineffectiveness: Interest rate contracts (2) 0 0 3 3 Net derivative gains (losses) recognized in earnings $ 20 $ 49 $ 92 $ 150 __________ (1) Amounts reclassified are recorded in our consolidated statements of income in interest income or interest expense. (2) Amounts are recorded in our consolidated statements of income in other non-interest income or other interest income.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Schedule of Preferred Stock	The following table summarizes the Company’s preferred stock issued and outstanding as of September 30, 2017 and December 31, 2016 . Table 10.1 : Preferred Stock Issued and Outstanding (1) Redeemable by Issuer Beginning Per Annum Dividend Rate Dividend Frequency Liquidation Preference per Share Carrying Value (in millions) Series Description Issuance Date Total Shares Outstanding September 30, 2017 December 31, 2016 Series B 6.00% Non-Cumulative August 20, 2012 September 1, 2017 6.00% Quarterly $ 1,000 875,000 $ 853 $ 853 Series C 6.25% Non-Cumulative June 12, 2014 September 1, 2019 6.25 Quarterly 1,000 500,000 484 484 Series D 6.70% Non-Cumulative October 31, 2014 December 1, 2019 6.70 Quarterly 1,000 500,000 485 485 Series E Fixed-to-Floating Rate Non-Cumulative May 14, 2015 June 1, 2020 5.55% through 5/31/2020; Semi-Annually through 5/31/2020; Quarterly thereafter 1,000 1,000,000 988 988 Series F 6.20% Non-Cumulative August 24, 2015 December 1, 2020 6.20 Quarterly 1,000 500,000 484 484 Series G 5.20% Non-Cumulative July 29, 2016 December 1, 2021 5.20 Quarterly 1,000 600,000 583 583 Series H 6.00% Non-Cumulative November 29, 2016 December 1, 2021 6.00 Quarterly 1,000 500,000 483 483 Total $ 4,360 $ 4,360 __________ (1) Except for Series E, ownership is held in the form of depositary shares, each representing a 1/40th interest in a share of fixed-rate non-cumulative perpetual preferred stock.
Change in AOCI Gain (Loss) by Component (Net of Tax)	The following table presents the changes in AOCI by component for the three and nine months ended September 30, 2017 and 2016 . Table 10.2 : Accumulated Other Comprehensive Income Three Months Ended September 30, 2017 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of June 30, 2017 $ 181 $ (575 ) $ (99 ) $ (174 ) $ (16 ) $ (683 ) Other comprehensive income before reclassifications 52 0 3 38 5 98 Amounts reclassified from AOCI into earnings (42 ) 26 (20 ) 0 (1 ) (37 ) Net other comprehensive income (loss) 10 26 (17 ) 38 4 61 AOCI as of September 30, 2017 $ 191 $ (549 ) $ (116 ) $ (136 ) $ (12 ) $ (622 ) Nine Months Ended September 30, 2017 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of December 31, 2016 $ (4 ) $ (621 ) $ (78 ) $ (222 ) $ (24 ) $ (949 ) Other comprehensive income before reclassifications 235 0 51 86 16 388 Amounts reclassified from AOCI into earnings (40 ) 72 (89 ) 0 (4 ) (61 ) Net other comprehensive income (loss) 195 72 (38 ) 86 12 327 AOCI as of September 30, 2017 $ 191 $ (549 ) $ (116 ) $ (136 ) $ (12 ) $ (622 ) Three Months Ended September 30, 2016 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of June 30, 2016 $ 485 $ (679 ) $ 640 $ (172 ) $ (33 ) $ 241 Other comprehensive income (loss) before reclassifications 10 (1 ) (93 ) (20 ) 6 (98 ) Amounts reclassified from AOCI into earnings 0 29 (49 ) 0 (2 ) (22 ) Net other comprehensive income (loss) 10 28 (142 ) (20 ) 4 (120 ) AOCI as of September 30, 2016 $ 495 $ (651 ) $ 498 $ (192 ) $ (29 ) $ 121 Nine Months Ended September 30, 2016 (Dollars in millions) Securities Available for Sale Securities Held to Maturity (1) Cash Flow Hedges Foreign (2) Other Total AOCI as of December 31, 2015 $ 162 $ (725 ) $ 120 $ (143 ) $ (30 ) $ (616 ) Other comprehensive income (loss) before reclassifications 329 (1 ) 525 (49 ) 1 805 Amounts reclassified from AOCI into earnings 4 75 (147 ) 0 0 (68 ) Net other comprehensive income (loss) 333 74 378 (49 ) 1 737 AOCI as of September 30, 2016 $ 495 $ (651 ) $ 498 $ (192 ) $ (29 ) $ 121 __________ (1) The amortization of unrealized holding gains or losses reported in AOCI for securities held to maturity will be offset by the amortization of premium or discount created from the transfer of securities from available for sale to held to maturity, which occurred at fair value. These unrealized gains or losses will be amortized over the remaining life of the security with no expected impact on future net income. (2) Includes the impact from hedging instruments designated as net investment hedges.
Reclassifications from AOCI	The following table presents the impacts on net income of amounts reclassified from each component of AOCI for the three and nine months ended September 30, 2017 and 2016 . Table 10.3 : Reclassifications from AOCI Amount Reclassified from AOCI (Dollars in millions) Three Months Ended September 30, Nine Months Ended September 30, AOCI Components Affected Income Statement Line Item 2017 2016 2017 2016 Securities available for sale: Non-interest income $ 68 $ 1 $ 64 $ (6 ) Income tax provision (benefit) 26 1 24 (2 ) Net income (loss) 42 0 40 (4 ) Securities held to maturity: (1) Interest income (40 ) (46 ) (113 ) (119 ) Income tax provision (benefit) (14 ) (17 ) (41 ) (44 ) Net income (loss) (26 ) (29 ) (72 ) (75 ) Cash flow hedges: Interest rate contracts: Interest income 25 77 122 234 Foreign exchange contracts: Interest income 6 1 19 1 Non-interest income 1 0 1 (1 ) Income from continuing operations before income taxes 32 78 142 234 Income tax provision 12 29 53 87 Net income 20 49 89 147 Other: Various (pension and other) 3 2 7 0 Income tax provision 2 0 3 0 Net income 1 2 4 0 Total reclassifications $ 37 $ 22 $ 61 $ 68 __________ (1) The amortization of unrealized holding gains or losses reported in AOCI for securities held to maturity will be offset by the amortization of premium or discount created from the transfer of securities from available for sale to held to maturity, which occurred at fair value. These unrealized gains or losses will be amortized over the remaining life of the security with no expected impact on future net income.
Components of Other Comprehensive Income (Loss) and Related Tax Impact	The table below summarizes other comprehensive income activity and the related tax impact for the three and nine months ended September 30, 2017 and 2016 . Table 10.4 : Other Comprehensive Income (Loss) Three Months Ended September 30, 2017 2016 (Dollars in millions) Before Tax Provision After Tax Before Tax Provision After Tax Other comprehensive income (loss): Net unrealized gains on securities available for sale $ 16 $ 6 $ 10 $ 17 $ 7 $ 10 Net changes in securities held to maturity 40 14 26 44 16 28 Net unrealized gains (losses) on cash flow hedges (29 ) (12 ) (17 ) (226 ) (84 ) (142 ) Foreign currency translation adjustments (1) 11 (27 ) 38 4 24 (20 ) Other 7 3 4 6 2 4 Other comprehensive income (loss) $ 45 $ (16 ) $ 61 $ (155 ) $ (35 ) $ (120 ) Nine Months Ended September 30, 2017 2016 (Dollars in millions) Before Tax Provision After Tax Before Tax Provision After Tax Other comprehensive income: Net unrealized gains on securities available for sale $ 299 $ 104 $ 195 $ 525 $ 192 $ 333 Net changes in securities held to maturity 113 41 72 118 44 74 Net unrealized gains (losses) on cash flow hedges (61 ) (23 ) (38 ) 601 223 378 Foreign currency translation adjustments (1) 12 (74 ) 86 70 119 (49 ) Other 19 7 12 1 0 1 Other comprehensive income $ 382 $ 55 $ 327 $ 1,315 $ 578 $ 737 __________ (1) Includes the impact from hedging instruments designated as net investment hedges.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Earnings Per Common Share	The following table sets forth the computation of basic and diluted earnings per common share. Table 11.1 : Computation of Basic and Diluted Earnings per Common Share Three Months Ended September 30, Nine Months Ended September 30, (Dollars and shares in millions, except per share data) 2017 2016 2017 2016 Income from continuing operations, net of tax $ 1,137 $ 1,016 $ 2,979 $ 2,977 Income (loss) from discontinued operations, net of tax (30 ) (11 ) (26 ) (17 ) Net income 1,107 1,005 2,953 2,960 Dividends and undistributed earnings allocated to participating securities (1) (8 ) (6 ) (21 ) (18 ) Preferred stock dividends (52 ) (37 ) (185 ) (139 ) Net income available to common stockholders $ 1,047 $ 962 $ 2,747 $ 2,803 Total weighted-average basic shares outstanding 484.9 501.1 483.7 512.0 Effect of dilutive securities: Stock options 2.2 1.9 2.5 1.9 Other contingently issuable shares 1.2 1.3 1.2 1.3 Warrants (2) 0.7 1.6 0.7 1.6 Total effect of dilutive securities 4.1 4.8 4.4 4.8 Total weighted-average diluted shares outstanding 489.0 505.9 488.1 516.8 Basic earnings per common share: Net income from continuing operations $ 2.22 $ 1.94 $ 5.73 $ 5.50 Income (loss) from discontinued operations (0.06 ) (0.02 ) (0.05 ) (0.03 ) Net income per basic common share $ 2.16 $ 1.92 $ 5.68 $ 5.47 Diluted earnings per common share: (3) Net income from continuing operations $ 2.20 $ 1.92 $ 5.68 $ 5.45 Income (loss) from discontinued operations (0.06 ) (0.02 ) (0.05 ) (0.03 ) Net income per diluted common share $ 2.14 $ 1.90 $ 5.63 $ 5.42 __________ (1) Dividends and undistributed earnings allocated to participating securities includes undistributed earnings allocated to participating securities using the two-class method under the accounting guidance for computing earnings per share. (2) Represents warrants issued as part of the U.S. Department of Treasury’s Troubled Assets Relief Program (“TARP”). There were 1.4 million and 4.1 million warrants to purchase common stock outstanding as of September 30, 2017 and 2016 , respectively. (3) Excluded from the computation of diluted earnings per share were 304,000 shares related to options with an exercise price of $82.08 to $86.34 , and 279,000 shares related to options with exercise prices ranging from $82.08 to $86.34 for the three and nine months ended September 30, 2017 , respectively, and 2.0 million shares related to options with exercise prices ranging from $63.73 to $82.08 , and 2.3 million shares related to options with exercise prices ranging from $63.73 to $88.81 for the three and nine months ended September 30, 2016 , respectively, because their inclusion would be anti-dilutive.

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table displays our assets and liabilities measured on our consolidated balance sheets at fair value on a recurring basis as of September 30, 2017 and December 31, 2016 . During the nine months ended September 30, 2017 , we had minimal movements between Levels 1 and 2. Table 12.1 : Assets and Liabilities Measured at Fair Value on a Recurring Basis September 30, 2017 Fair Value Measurements Using Netting Adjustments (1) (Dollars in millions) Level 1 Level 2 Level 3 Total Assets: Securities available for sale: U.S. Treasury securities $ 5,139 $ 0 $ 0 $ — $ 5,139 RMBS 0 27,718 520 — 28,238 CMBS 0 4,763 66 — 4,829 Other ABS 0 547 0 — 547 Other securities 292 688 9 — 989 Total securities available for sale 5,431 33,716 595 — 39,742 Other assets: Derivative assets (1)(2) 1 687 57 (236 ) 509 Other (3) 267 0 268 — 535 Total assets $ 5,699 $ 34,403 $ 920 $ (236 ) $ 40,786 Liabilities: Other liabilities: Derivative liabilities (1)(2) $ 3 $ 998 $ 30 $ (598 ) $ 433 Total liabilities $ 3 $ 998 $ 30 $ (598 ) $ 433 December 31, 2016 Fair Value Measurements Using Netting Adjustments (1) (Dollars in millions) Level 1 Level 2 Level 3 Total Assets: Securities available for sale: U.S. Treasury securities $ 5,065 $ 0 $ 0 $ — $ 5,065 RMBS 0 28,731 518 — 29,249 CMBS 0 4,937 51 — 4,988 Other ABS 0 714 0 — 714 Other securities 295 417 9 — 721 Total securities available for sale 5,360 34,799 578 — 40,737 Other assets: Derivative assets (1)(2) 7 1,440 47 (539 ) 955 Other (3) 219 0 281 — 500 Total assets $ 5,586 $ 36,239 $ 906 $ (539 ) $ 42,192 Liabilities: Other liabilities: Derivative liabilities (1)(2) $ 12 $ 1,397 $ 29 $ (336 ) $ 1,102 Total liabilities $ 12 $ 1,397 $ 29 $ (336 ) $ 1,102 __________ (1) Represents balance sheet netting of derivative assets and liabilities, and related payable and receivables for cash collateral held or placed with the same counterparty. See “Note 9—Derivative Instrument and Hedging Activities” for additional information. (2) Does not reflect $3 million and $5 million recognized as a net valuation allowance on derivative assets and liabilities for non-performance risk as of September 30, 2017 and December 31, 2016 , respectively. Non-performance risk is included in the derivative assets and liabilities which are part of other assets and liabilities on the consolidated balance sheets and offset through non-interest income in the consolidated statements of income. (3) Other includes consumer MSRs of $90 million and $80 million , retained interests in securitizat ions of $178 million an d $201 million and deferred compensation plan assets of $267 million and $219 million as of September 30, 2017 and December 31, 2016 , respectively.
Schedule of Level 3 Inputs Reconciliation for Assets	The table below presents a reconciliation for all assets and liabilities measured and recognized at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2017 and 2016 . When assets and liabilities are transferred between levels, we recognize the transfer as of the end of the period. Table 12.2 : Level 3 Recurring Fair Value Rollforward Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Three Months Ended September 30, 2017 Total Gains (Losses) (Realized/Unrealized) Net Unrealized (3) (Dollars in millions) Balance, July 1, 2017 Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2017 Assets: Securities available for sale: RMBS $ 429 $ 65 $ (37 ) $ 0 $ (111 ) $ 0 $ (23 ) $ 222 $ (25 ) $ 520 $ 5 CMBS 17 0 0 50 0 0 (1 ) 0 0 66 0 Other securities 9 0 0 0 0 0 0 0 0 9 0 Total securities available for sale 455 65 (37 ) 50 (111 ) 0 (24 ) 222 (25 ) 595 5 Other assets: Derivative assets (4) 57 (2 ) 0 0 0 25 (20 ) 0 (3 ) 57 (2 ) Consumer MSRs 85 1 0 0 0 6 (2 ) 0 0 90 1 Retained interest in securitizations 188 (10 ) 0 0 0 0 0 0 0 178 (10 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (32 ) $ 0 $ 0 $ 0 $ 0 $ (7 ) $ 7 $ 0 $ 2 $ (30 ) $ 0 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Three Months Ended September 30, 2016 Total Gains (Losses) (Realized/Unrealized) Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held as of September 30, 2016 (3) (Dollars in millions) Balance, Included (1) Included in OCI Purchases Sales Issuances Settlements Transfers (2) Transfers (2) Balance, September 30, 2016 Assets: Securities available for sale: RMBS $ 555 $ 9 $ 11 $ 51 $ 0 $ 0 $ (27 ) $ 122 $ (137 ) $ 584 $ 8 CMBS 128 0 0 78 0 0 (2 ) 0 (106 ) 98 0 Other ABS 30 0 0 0 0 0 0 0 (30 ) 0 0 Other securities 19 (9 ) 0 6 0 0 (7 ) 0 0 9 0 Total securities available for sale 732 0 11 135 0 0 (36 ) 122 (273 ) 691 8 Other assets: Derivative assets (4) 85 0 0 0 0 18 (27 ) 0 (2 ) 74 0 Consumer MSRs 53 3 0 0 0 7 (1 ) 0 0 62 3 Retained interest in securitizations 203 2 0 0 0 0 0 0 0 205 2 Liabilities: Other liabilities: Derivative liabilities (4) $ (67 ) $ 1 $ 0 $ 0 $ 0 $ (1 ) $ 22 $ 0 $ 1 $ (44 ) $ 1 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Nine Months Ended September 30, 2017 Total Gains (Losses) (Realized/Unrealized) Net Unrealized (3) (Dollars in millions) Balance, January 1, 2017 Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2017 Assets: Securities available for sale: RMBS $ 518 $ 82 $ (19 ) $ 0 $ (116 ) $ 0 $ (69 ) $ 434 $ (310 ) $ 520 $ 17 CMBS 51 0 0 110 0 0 (3 ) 0 (92 ) 66 0 Other securities 9 0 0 0 0 0 0 0 0 9 0 Total securities available for sale 578 82 (19 ) 110 (116 ) 0 (72 ) 434 (402 ) 595 17 Other assets: Derivative assets (4) 47 1 0 0 0 65 (45 ) 0 (11 ) 57 1 Consumer MSRs 80 (3 ) 0 0 0 18 (5 ) 0 0 90 (3 ) Retained interest in securitizations 201 (23 ) 0 0 0 0 0 0 0 178 (23 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (29 ) $ (2 ) $ 0 $ 0 $ 0 $ (20 ) $ 17 $ 0 $ 4 $ (30 ) $ (2 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Nine Months Ended September 30, 2016 Total Gains (Losses) (Realized/Unrealized) Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held as of September 30, 2016 (3) (Dollars in millions) Balance, Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2016 Assets: Securities available for sale: RMBS $ 504 $ 22 $ 17 $ 110 $ 0 $ 0 $ (75 ) $ 329 $ (323 ) $ 584 $ 22 CMBS 97 0 2 234 0 0 (12 ) 64 (287 ) 98 0 Other ABS 0 0 0 30 0 0 0 0 (30 ) 0 0 Other securities 14 (9 ) 0 14 0 0 (10 ) 0 0 9 0 Total securities available for sale 615 13 19 388 0 0 (97 ) 393 (640 ) 691 22 Other assets: Derivative assets (4) 57 28 0 0 0 60 (53 ) 0 (18 ) 74 28 Consumer MSRs 68 (17 ) 0 0 0 15 (4 ) 0 0 62 (17 ) Retained interest in securitizations 211 (6 ) 0 0 0 0 0 0 0 205 (6 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (27 ) $ (28 ) $ 0 $ 0 $ 0 $ (32 ) $ 35 $ 0 $ 8 $ (44 ) $ (28 ) __________ (1) Gains (losses) related to Level 3 Consumer MSRs, derivative assets and derivative liabilities, and retained interests in securitizations are reported in other non-interest income, which is a component of non-interest income, in our consolidated statements of income. (2) During the three and nine months ended September 30, 2017 and 2016 , the transfers into Level 3 were primarily driven by the usage of unobservable assumptions in the pricing of these securities as evidenced by wider pricing variations among pricing vendors. Transfers out of Level 3 were primarily driven by the usage of assumptions corroborated by market observable information as evidenced by tighter pricing among multiple pricing sources. (3) The amount presented for unrealized gains (losses) for assets still held as of the reporting date primarily represents impairments of securities available for sale, accretion on certain fixed maturity securities, changes in fair value of derivative instruments and mortgage servicing rights transactions. (4) All Level 3 derivative assets and liabilities are presented on a gross basis and are not reduced by the impact of legally enforceable master netting agreements that allow us to net positive and negative positions and the related payables and receivables for cash collateral held or placed with the same counterparty.
Schedule of Level 3 Inputs Reconciliation for Liabilities	The table below presents a reconciliation for all assets and liabilities measured and recognized at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2017 and 2016 . When assets and liabilities are transferred between levels, we recognize the transfer as of the end of the period. Table 12.2 : Level 3 Recurring Fair Value Rollforward Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Three Months Ended September 30, 2017 Total Gains (Losses) (Realized/Unrealized) Net Unrealized (3) (Dollars in millions) Balance, July 1, 2017 Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2017 Assets: Securities available for sale: RMBS $ 429 $ 65 $ (37 ) $ 0 $ (111 ) $ 0 $ (23 ) $ 222 $ (25 ) $ 520 $ 5 CMBS 17 0 0 50 0 0 (1 ) 0 0 66 0 Other securities 9 0 0 0 0 0 0 0 0 9 0 Total securities available for sale 455 65 (37 ) 50 (111 ) 0 (24 ) 222 (25 ) 595 5 Other assets: Derivative assets (4) 57 (2 ) 0 0 0 25 (20 ) 0 (3 ) 57 (2 ) Consumer MSRs 85 1 0 0 0 6 (2 ) 0 0 90 1 Retained interest in securitizations 188 (10 ) 0 0 0 0 0 0 0 178 (10 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (32 ) $ 0 $ 0 $ 0 $ 0 $ (7 ) $ 7 $ 0 $ 2 $ (30 ) $ 0 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Three Months Ended September 30, 2016 Total Gains (Losses) (Realized/Unrealized) Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held as of September 30, 2016 (3) (Dollars in millions) Balance, Included (1) Included in OCI Purchases Sales Issuances Settlements Transfers (2) Transfers (2) Balance, September 30, 2016 Assets: Securities available for sale: RMBS $ 555 $ 9 $ 11 $ 51 $ 0 $ 0 $ (27 ) $ 122 $ (137 ) $ 584 $ 8 CMBS 128 0 0 78 0 0 (2 ) 0 (106 ) 98 0 Other ABS 30 0 0 0 0 0 0 0 (30 ) 0 0 Other securities 19 (9 ) 0 6 0 0 (7 ) 0 0 9 0 Total securities available for sale 732 0 11 135 0 0 (36 ) 122 (273 ) 691 8 Other assets: Derivative assets (4) 85 0 0 0 0 18 (27 ) 0 (2 ) 74 0 Consumer MSRs 53 3 0 0 0 7 (1 ) 0 0 62 3 Retained interest in securitizations 203 2 0 0 0 0 0 0 0 205 2 Liabilities: Other liabilities: Derivative liabilities (4) $ (67 ) $ 1 $ 0 $ 0 $ 0 $ (1 ) $ 22 $ 0 $ 1 $ (44 ) $ 1 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Nine Months Ended September 30, 2017 Total Gains (Losses) (Realized/Unrealized) Net Unrealized (3) (Dollars in millions) Balance, January 1, 2017 Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2017 Assets: Securities available for sale: RMBS $ 518 $ 82 $ (19 ) $ 0 $ (116 ) $ 0 $ (69 ) $ 434 $ (310 ) $ 520 $ 17 CMBS 51 0 0 110 0 0 (3 ) 0 (92 ) 66 0 Other securities 9 0 0 0 0 0 0 0 0 9 0 Total securities available for sale 578 82 (19 ) 110 (116 ) 0 (72 ) 434 (402 ) 595 17 Other assets: Derivative assets (4) 47 1 0 0 0 65 (45 ) 0 (11 ) 57 1 Consumer MSRs 80 (3 ) 0 0 0 18 (5 ) 0 0 90 (3 ) Retained interest in securitizations 201 (23 ) 0 0 0 0 0 0 0 178 (23 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (29 ) $ (2 ) $ 0 $ 0 $ 0 $ (20 ) $ 17 $ 0 $ 4 $ (30 ) $ (2 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Nine Months Ended September 30, 2016 Total Gains (Losses) (Realized/Unrealized) Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held as of September 30, 2016 (3) (Dollars in millions) Balance, Included in Net Income (1) Included in OCI Purchases Sales Issuances Settlements Transfers Into Level 3 (2) Transfers Out of Level 3 (2) Balance, September 30, 2016 Assets: Securities available for sale: RMBS $ 504 $ 22 $ 17 $ 110 $ 0 $ 0 $ (75 ) $ 329 $ (323 ) $ 584 $ 22 CMBS 97 0 2 234 0 0 (12 ) 64 (287 ) 98 0 Other ABS 0 0 0 30 0 0 0 0 (30 ) 0 0 Other securities 14 (9 ) 0 14 0 0 (10 ) 0 0 9 0 Total securities available for sale 615 13 19 388 0 0 (97 ) 393 (640 ) 691 22 Other assets: Derivative assets (4) 57 28 0 0 0 60 (53 ) 0 (18 ) 74 28 Consumer MSRs 68 (17 ) 0 0 0 15 (4 ) 0 0 62 (17 ) Retained interest in securitizations 211 (6 ) 0 0 0 0 0 0 0 205 (6 ) Liabilities: Other liabilities: Derivative liabilities (4) $ (27 ) $ (28 ) $ 0 $ 0 $ 0 $ (32 ) $ 35 $ 0 $ 8 $ (44 ) $ (28 ) __________ (1) Gains (losses) related to Level 3 Consumer MSRs, derivative assets and derivative liabilities, and retained interests in securitizations are reported in other non-interest income, which is a component of non-interest income, in our consolidated statements of income. (2) During the three and nine months ended September 30, 2017 and 2016 , the transfers into Level 3 were primarily driven by the usage of unobservable assumptions in the pricing of these securities as evidenced by wider pricing variations among pricing vendors. Transfers out of Level 3 were primarily driven by the usage of assumptions corroborated by market observable information as evidenced by tighter pricing among multiple pricing sources. (3) The amount presented for unrealized gains (losses) for assets still held as of the reporting date primarily represents impairments of securities available for sale, accretion on certain fixed maturity securities, changes in fair value of derivative instruments and mortgage servicing rights transactions. (4) All Level 3 derivative assets and liabilities are presented on a gross basis and are not reduced by the impact of legally enforceable master netting agreements that allow us to net positive and negative positions and the related payables and receivables for cash collateral held or placed with the same counterparty.
Schedule of Assets Measured at Fair Value on Recurring Basis Quantitative Information	The following table presents the significant unobservable inputs used to determine the fair values of our Level 3 financial instruments on a recurring basis. We utilize multiple third-party pricing services to obtain fair value for our securities. Several of our third-party pricing services are only able to provide unobservable input information for a limited number of securities due to software licensing restrictions. Other third-party pricing services are able to provide unobservable input information for all securities for which they provide a valuation. As a result, the unobservable input information for the securities available for sale presented below represents a composite summary of all information we are able to obtain. The unobservable input information for all other Level 3 financial instruments is based on the assumptions used in our internal valuation models. Table 12.3 : Quantitative Information about Level 3 Fair Value Measurements Quantitative Information about Level 3 Fair Value Measurements (Dollars in millions) Fair Value at September 30, Significant Valuation Techniques Significant Unobservable Inputs Range Weighted Average Assets: Securities available for sale: RMBS $ 520 Discounted cash flows (3rd party pricing) Yield 2-9% 4% CMBS 66 Discounted cash flows (3rd party pricing) Yield 2-3% 2% Other securities 9 Discounted cash flows Yield 2% 2% Other assets: Derivative assets (1) 57 Discounted cash flows Swap rates 2% 2% Consumer MSRs 90 Discounted cash flows Total prepayment rate 7-21% 15% Retained interests in securitization (2) 178 Discounted cash flows Life of receivables (months) 2-87 N/A Liabilities: Derivative liabilities (1) $ 30 Discounted cash flows Swap rates 2% 2% Quantitative Information about Level 3 Fair Value Measurements (Dollars in millions) Fair Value at December 31, 2016 Significant Valuation Techniques Significant Unobservable Inputs Range Weighted Average Assets: Securities available for sale: RMBS $ 518 Discounted cash flows (3rd party pricing) Yield 0-15% 5% CMBS 51 Discounted cash flows (3rd party pricing) Yield 2% 2% Other securities 9 Discounted cash flows Yield 1-2% 1% Other assets: Derivative assets (1) 47 Discounted cash flows Swap rates 2% 2% Consumer MSRs 80 Discounted cash flows Total prepayment rate 8-20% 15% Retained interests in securitization (2) 201 Discounted cash flows Life of receivables (months) Voluntary prepayment rate 6-87 N/A Liabilities: Derivative liabilities (1) $ 29 Discounted cash flows Swap rates 2% 2% __________ (1) All Level 3 derivative assets and liabilities are presented on a gross basis and are not reduced by the impact of legally enforceable master netting agreements that allow us to net positive and negative positions and the related payables and receivables for cash collateral held or placed with the same counterparty. (2) Due to the nature of the various mortgage securitization structures in which we have retained interests, it is not meaningful to present a consolidated weighted average for the significant unobservable inputs.
Schedule of Liabilities Measured at Fair Value on Recurring Basis Quantitative Information	The following table presents the significant unobservable inputs used to determine the fair values of our Level 3 financial instruments on a recurring basis. We utilize multiple third-party pricing services to obtain fair value for our securities. Several of our third-party pricing services are only able to provide unobservable input information for a limited number of securities due to software licensing restrictions. Other third-party pricing services are able to provide unobservable input information for all securities for which they provide a valuation. As a result, the unobservable input information for the securities available for sale presented below represents a composite summary of all information we are able to obtain. The unobservable input information for all other Level 3 financial instruments is based on the assumptions used in our internal valuation models. Table 12.3 : Quantitative Information about Level 3 Fair Value Measurements Quantitative Information about Level 3 Fair Value Measurements (Dollars in millions) Fair Value at September 30, Significant Valuation Techniques Significant Unobservable Inputs Range Weighted Average Assets: Securities available for sale: RMBS $ 520 Discounted cash flows (3rd party pricing) Yield 2-9% 4% CMBS 66 Discounted cash flows (3rd party pricing) Yield 2-3% 2% Other securities 9 Discounted cash flows Yield 2% 2% Other assets: Derivative assets (1) 57 Discounted cash flows Swap rates 2% 2% Consumer MSRs 90 Discounted cash flows Total prepayment rate 7-21% 15% Retained interests in securitization (2) 178 Discounted cash flows Life of receivables (months) 2-87 N/A Liabilities: Derivative liabilities (1) $ 30 Discounted cash flows Swap rates 2% 2% Quantitative Information about Level 3 Fair Value Measurements (Dollars in millions) Fair Value at December 31, 2016 Significant Valuation Techniques Significant Unobservable Inputs Range Weighted Average Assets: Securities available for sale: RMBS $ 518 Discounted cash flows (3rd party pricing) Yield 0-15% 5% CMBS 51 Discounted cash flows (3rd party pricing) Yield 2% 2% Other securities 9 Discounted cash flows Yield 1-2% 1% Other assets: Derivative assets (1) 47 Discounted cash flows Swap rates 2% 2% Consumer MSRs 80 Discounted cash flows Total prepayment rate 8-20% 15% Retained interests in securitization (2) 201 Discounted cash flows Life of receivables (months) Voluntary prepayment rate 6-87 N/A Liabilities: Derivative liabilities (1) $ 29 Discounted cash flows Swap rates 2% 2% __________ (1) All Level 3 derivative assets and liabilities are presented on a gross basis and are not reduced by the impact of legally enforceable master netting agreements that allow us to net positive and negative positions and the related payables and receivables for cash collateral held or placed with the same counterparty. (2) Due to the nature of the various mortgage securitization structures in which we have retained interests, it is not meaningful to present a consolidated weighted average for the significant unobservable inputs.
Schedule of Assets Measured at Fair Value on Nonrecurring Basis	The following table presents the carrying value of the assets measured at fair value on a nonrecurring basis and still held as of September 30, 2017 and December 31, 2016 , and for which a nonrecurring fair value measurement was recorded during the nine and twelve months then ended: Table 12.4 : Nonrecurring Fair Value Measurements September 30, 2017 Estimated Fair Value Hierarchy Total (Dollars in millions) Level 2 Level 3 Loans held for investment $ 0 $ 563 $ 563 Loans held for sale 773 2 775 Other assets (1) 0 29 29 Total $ 773 $ 594 $ 1,367 December 31, 2016 Estimated Fair Value Hierarchy Total (Dollars in millions) Level 2 Level 3 Loans held for investment $ 0 $ 587 $ 587 Loans held for sale 157 0 157 Other assets (1) 0 83 83 Total $ 157 $ 670 $ 827 __________ (1) Other assets includes foreclosed property and repossessed assets of $22 million and long-lived assets held for sale of $7 million as of September 30, 2017 , compared to foreclosed property and repossessed assets of $43 million and long-lived assets held for sale of $40 million as of December 31, 2016 .
Schedule of Earnings Related to Assets Measured at Fair Value on Nonrecurring Basis	The following table presents total nonrecurring fair value measurements for the period, included in earnings, attributable to the change in fair value relating to assets that are still held at September 30, 2017 and 2016 . Table 12.5 : Nonrecurring Fair Value Measurements Included in Earnings Total Gains (Losses) Nine Months Ended September 30, (Dollars in millions) 2017 2016 Loans held for investment $ (237 ) $ (142 ) Loans held for sale (5 ) 0 Other assets (1) (7 ) (15 ) Total $ (249 ) $ (157 ) __________ (1) Other assets includes losses related to foreclosed property, repossessed assets and long-lived assets held for sale.
Schedule of Fair Value of Financial Instruments	The following table presents the carrying value and estimated fair value, including the level within the fair value hierarchy, of our financial instruments that are not measured at fair value on a recurring basis on our consolidated balance sheets as of September 30, 2017 and December 31, 2016 . Table 12.6 : Fair Value of Financial Instruments September 30, 2017 Carrying Value Estimated Fair Value Estimated Fair Value Hierarchy (Dollars in millions) Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 8,484 $ 8,484 $ 4,154 $ 4,330 $ 0 Restricted cash for securitization investors 304 304 304 0 0 Securities held to maturity 28,650 29,327 199 29,122 6 Net loans held for investment 245,004 249,622 0 0 249,622 Loans held for sale 1,566 1,580 0 1,578 2 Interest receivable 1,426 1,426 0 1,426 0 Other investments (1) 1,803 1,804 0 1,793 11 Financial liabilities: Deposits $ 239,062 $ 241,634 $ 26,106 $ 215,528 $ 0 Securitized debt obligations 17,087 17,196 0 17,196 0 Senior and subordinated notes 28,420 29,004 0 29,004 0 Federal funds purchased and securities loaned or sold under agreements to repurchase 767 767 0 767 0 Other borrowings (2) 13,136 13,137 0 13,137 0 Interest payable 301 301 0 301 0 December 31, 2016 Carrying Value Estimated Fair Value Estimated Fair Value Hierarchy (Dollars in millions) Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 9,976 $ 9,976 $ 4,185 $ 5,791 $ 0 Restricted cash for securitization investors 2,517 2,517 2,517 0 0 Securities held to maturity 25,712 26,196 199 25,962 35 Net loans held for investment 239,083 242,935 0 0 242,935 Loans held for sale 1,043 1,038 0 1,038 0 Interest receivable 1,351 1,351 0 1,351 0 Other investments (1) 2,029 2,029 0 2,020 9 Financial liabilities: Deposits $ 236,768 $ 237,082 $ 25,502 $ 211,580 $ 0 Securitized debt obligations 18,826 18,920 0 18,920 0 Senior and subordinated notes 23,431 23,774 0 23,774 0 Federal funds purchased and securities loaned or sold under agreements to repurchase 992 992 0 992 0 Other borrowings 17,211 17,180 0 17,180 0 Interest payable 327 327 0 327 0 __________ (1) Other investments includes FHLB, Federal Reserve stock and cost method investments. These investments are included in other assets on our consolidated balance sheets. (2) Other borrowings exclude capital lease obligations.

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Schedule of Segment Results and Reconciliation	The following tables present our business segment results for the three and nine months ended September 30, 2017 and 2016 , selected balance sheet data as of September 30, 2017 and 2016 , and a reconciliation of our total business segment results to our reported consolidated income from continuing operations, loans held for investment and deposits. Table 13.1 : Segment Results and Reconciliation Three Months Ended September 30, 2017 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 3,440 $ 1,649 $ 560 $ 51 $ 5,700 Non-interest income 865 192 179 49 1,285 Total net revenue 4,305 1,841 739 100 6,985 Provision (benefit) for credit losses 1,466 293 63 11 1,833 Non-interest expense 1,961 1,051 394 161 3,567 Income (loss) from continuing operations before income taxes 878 497 282 (72 ) 1,585 Income tax provision (benefit) 306 181 103 (142 ) 448 Income from continuing operations, net of tax $ 572 $ 316 $ 179 $ 70 $ 1,137 Loans held for investment $ 109,130 $ 75,564 $ 67,670 $ 58 $ 252,422 Deposits 0 184,719 32,783 21,560 239,062 Three Months Ended September 30, 2016 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 3,204 $ 1,472 $ 555 $ 46 $ 5,277 Non-interest income 825 201 156 2 1,184 Total net revenue 4,029 1,673 711 48 6,461 Provision (benefit) for credit losses 1,272 256 61 (1 ) 1,588 Non-interest expense 1,884 1,034 349 94 3,361 Income (loss) from continuing operations before income taxes 873 383 301 (45 ) 1,512 Income tax provision (benefit) 318 139 110 (71 ) 496 Income from continuing operations, net of tax $ 555 $ 244 $ 191 $ 26 $ 1,016 Loans held for investment $ 99,201 $ 72,285 $ 66,457 $ 76 $ 238,019 Deposits 0 178,793 33,611 13,577 225,981 Nine Months Ended September 30, 2017 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 10,080 $ 4,744 $ 1,695 $ 128 $ 16,647 Non-interest income 2,478 570 520 9 3,577 Total net revenue 12,558 5,314 2,215 137 20,224 Provision (benefit) for credit losses 4,580 840 201 4 5,625 Non-interest expense 5,808 3,152 1,166 289 10,415 Income (loss) from continuing operations before income taxes 2,170 1,322 848 (156 ) 4,184 Income tax provision (benefit) 774 482 310 (361 ) 1,205 Income from continuing operations, net of tax $ 1,396 $ 840 $ 538 $ 205 $ 2,979 Loans held for investment $ 109,130 $ 75,564 $ 67,670 $ 58 $ 252,422 Deposits 0 184,719 32,783 21,560 239,062 Nine Months Ended September 30, 2016 (Dollars in millions) Credit Consumer Commercial (1) Other (1) Consolidated Net interest income $ 9,282 $ 4,331 $ 1,651 $ 162 $ 15,426 Non-interest income 2,531 567 403 8 3,509 Total net revenue 11,813 4,898 2,054 170 18,935 Provision (benefit) for credit losses 3,604 690 417 (4 ) 4,707 Non-interest expense 5,630 3,030 1,014 205 9,879 Income (loss) from continuing operations before income taxes 2,579 1,178 623 (31 ) 4,349 Income tax provision (benefit) 931 428 227 (214 ) 1,372 Income from continuing operations, net of tax $ 1,648 $ 750 $ 396 $ 183 $ 2,977 Loans held for investment $ 99,201 $ 72,285 $ 66,457 $ 76 $ 238,019 Deposits 0 178,793 33,611 13,577 225,981 __________ (1) Some of our tax-related commercial investments generate tax-exempt income or tax credits. Accordingly, we make certain reclassifications within our Commercial Banking business results to present revenues and yields on a taxable-equivalent basis, calculated assuming an effective tax rate approximately equal to our federal statutory tax rate of 35% with offsetting reclassifications to the Other category.

Commitments, Contingencies, G35

Commitments, Contingencies, Guarantees, and Others (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Letter of Credit and Other Loan Commitments [Table Text Block]	The following table presents contractual amount and carrying value of our unfunded lending commitments as of September 30, 2017 and December 31, 2016 . The carrying value represents our reserve and deferred revenue on legally binding commitments. Table 14.1 : Unfunded Lending Commitments: Contractual Amount and Carrying Value Contractual Amount Carrying Value (Dollars in millions) September 30, December 31, September 30, December 31, Standby letter of credit and commercial letter of credit (1) $ 2,074 $ 1,936 $ 39 $ 42 Credit card lines 354,155 312,864 N/A N/A Other loan commitments (2) 30,498 28,402 92 98 Total unfunded lending commitments $ 386,727 $ 343,202 $ 131 $ 140 __________ (1) These financial guarantees have expiration dates ranging from 2017 to 2025 as of September 30, 2017 . (2) Includes $898 million and $699 million of advised lines of credit as of September 30, 2017 and December 31, 2016 , respectively.
Schedule of Unpaid Principal Balance of Mortgage Loans Originated and Sold to Third Parties Based on Category of Purchaser	The following table presents the original principal balance of mortgage loan originations for the three general categories of purchasers of mortgage loans and the estimated unpaid principal balance as of September 30, 2017 and December 31, 2016 . Table 14.2 : Unpaid Principal Balance of Mortgage Loans Originated and Sold to Third Parties Based on Category of Purchaser Estimated Unpaid Principal Balance Original Principal Balance (Dollars in billions) September 30, December 31, 2005-2008 GSEs $ 1 $ 2 $ 11 Insured Securitizations 3 3 20 Uninsured Securitizations and Other 11 12 80 Total $ 15 $ 17 $ 111
Schedule of Changes in Representation and Warranty Reserve	The table below summarizes changes in our representation and warranty reserve for the three and nine months ended September 30, 2017 and 2016 . Table 14.3 : Changes in Representation and Warranty Reserve (1) Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2017 2016 2017 2016 Representation and warranty reserve, beginning of period $ 521 $ 614 $ 630 $ 610 Provision (benefit) for mortgage representation and warranty losses: Recorded in continuing operations (1 ) 0 (26 ) (2 ) Recorded in discontinued operations 13 18 (48 ) 23 Total provision (benefit) for mortgage representation and warranty losses 12 18 (74 ) 21 Net realized recoveries (losses) (132 ) 0 (155 ) 1 Representation and warranty reserve, end of period $ 401 $ 632 $ 401 $ 632 __________ (1) Reported on our consolidated balance sheets as a component of other liabilities.

Summary of Significant Accoun36

Summary of Significant Accounting Policies - Segments (Details) - Segment	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Business Acquisition [Line Items]
Number of Operating Segments	3	3

Summary of Significant Accoun37

Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Acquisition (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 3,220	$ (11)
Cabela [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 3,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	6,000	6,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	2,600	2,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Credit Card Receivables	5,700	5,700
Business combination, recognized identifiable assets acquired and liabilities assumed, securitized debt obligation	$ 2,500	$ 2,500

Discontinued Operations - Summa

Discontinued Operations - Summary of Results from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of tax	$ (30)	$ (11)	$ (26)	$ (17)
Wholesale Mortgage Banking Unit
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations before income taxes	(47)	(17)	(40)	(27)
Income tax provision (benefit)	(17)	(6)	(14)	(10)
Income (loss) from discontinued operations, net of tax	$ (30)	$ (11)	$ (26)	$ (17)

Investment Securities - Schedul

Investment Securities - Schedule of Investment Portfolio (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Securities available for sale, at fair value	$ 39,742	$ 40,737
Securities held to maturity, at carrying value	28,650	25,712
Total investments securities	$ 68,392	$ 66,449

Investment Securities - Additio

Investment Securities - Additional Information (Details) $ in Millions	Sep. 30, 2017USD ($)Security	Dec. 31, 2016USD ($)
Schedule of Available-for-sale Securities [Line Items]
Number of sale securities exceeding amortized cost over fair value | Security	680
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (287)	$ (535)
Difference in amortized cost and fair value of securities that had been in a loss position for 12 months or longer	$ (193)	(116)
Securities held to maturity | Security	160
Fair value of securities pledged	$ 1,600	1,900
Carrying value of securities pledged	7,800	8,100
Encumbered amount of securities pledged as collateral	8,700	9,300
Fair value of securities pledged, accepted	1	16
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	$ (124)	$ (199)
Non-agency RMBS and CMBS, Non-agency ABS and Other Securities | Gross Unrealized Losses on Available-for-sale Securities
Schedule of Available-for-sale Securities [Line Items]
Percentage of portfolio	1.00%
Investment Securities Portfolio | US Treasury and Government
Schedule of Available-for-sale Securities [Line Items]
Percentage of portfolio	92.00%	91.00%
Residential Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (256)	$ (421)
Difference in amortized cost and fair value of securities that had been in a loss position for 12 months or longer	(171)	(90)
Non-agency RMBS and CMBS, Non-agency ABS and Other Securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(3)
Non-Agency | Residential Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	1	9
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	0	(9)
Difference in amortized cost and fair value of securities that had been in a loss position for 12 months or longer	$ 0	$ (7)

Investment Securities - Sched41

Investment Securities - Schedule of Available-for-Sale Securities (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Investment securities available for sale:
Total Amortized Cost	$ 39,439	$ 40,733
Gross Unrealized Gains	590	539
Gross Unrealized Losses	(287)	(535)
Securities available for sale, at fair value	39,742	40,737
U.S. Treasury securities
Investment securities available for sale:
Total Amortized Cost	5,110	5,103
Gross Unrealized Gains	29	11
Gross Unrealized Losses	0	(49)
Securities available for sale, at fair value	5,139	5,065
RMBS
Investment securities available for sale:
Total Amortized Cost	27,983	29,179
Gross Unrealized Gains	511	491
Gross Unrealized Losses	(256)	(421)
Securities available for sale, at fair value	28,238	29,249
RMBS | Agency
Investment securities available for sale:
Total Amortized Cost	26,186	26,830
Gross Unrealized Gains	109	109
Gross Unrealized Losses	(256)	(412)
Securities available for sale, at fair value	26,039	26,527
RMBS | Non-Agency
Investment securities available for sale:
Total Amortized Cost	1,797	2,349
Gross Unrealized Gains	402	382
Gross Unrealized Losses	0	(9)
Securities available for sale, at fair value	2,199	2,722
Non-credit OTTI losses related to non-agency RMBS	1	9
CMBS
Investment securities available for sale:
Total Amortized Cost	4,816	5,011
Gross Unrealized Gains	43	35
Gross Unrealized Losses	(30)	(58)
Securities available for sale, at fair value	4,829	4,988
CMBS | Agency
Investment securities available for sale:
Total Amortized Cost	3,033	3,335
Gross Unrealized Gains	16	14
Gross Unrealized Losses	(28)	(45)
Securities available for sale, at fair value	3,021	3,304
CMBS | Non-Agency
Investment securities available for sale:
Total Amortized Cost	1,783	1,676
Gross Unrealized Gains	27	21
Gross Unrealized Losses	(2)	(13)
Securities available for sale, at fair value	1,808	1,684
Other ABS
Investment securities available for sale:
Total Amortized Cost	546	714
Gross Unrealized Gains	1	1
Gross Unrealized Losses	0	(1)
Securities available for sale, at fair value	547	714
Other securities
Investment securities available for sale:
Total Amortized Cost	984	726
Gross Unrealized Gains	6	1
Gross Unrealized Losses	(1)	(6)
Securities available for sale, at fair value	$ 989	$ 721
Collateralized Credit Card Securities [Member] | Product Concentration Risk [Member] | Other Asset-backed Securities Portfolio
Investment securities available for sale:
Percentage of portfolio	56.00%	57.00%
Collateralized Auto Dealer Floor Plan Inventory Loans and Leases [Member] | Product Concentration Risk [Member] | Other Asset-backed Securities Portfolio
Investment securities available for sale:
Percentage of portfolio	23.00%	23.00%

Investment Securities - Investm

Investment Securities - Investment Securities Held to Maturity (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 29,526	$ 26,701
Unrealized Losses Recorded in AOCI	(876)	(989)
Carrying Value	28,650	25,712
Gross Unrealized Gains	801	683
Gross Unrealized Losses	(124)	(199)
Fair Value	29,327	26,196
U.S. Treasury securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	199	199
Unrealized Losses Recorded in AOCI	0	0
Carrying Value	199	199
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	199	199
Agency | RMBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	25,590	23,022
Unrealized Losses Recorded in AOCI	(795)	(897)
Carrying Value	24,795	22,125
Gross Unrealized Gains	704	606
Gross Unrealized Losses	(102)	(158)
Fair Value	25,397	22,573
Agency | CMBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	3,737	3,480
Unrealized Losses Recorded in AOCI	(81)	(92)
Carrying Value	3,656	3,388
Gross Unrealized Gains	97	77
Gross Unrealized Losses	(22)	(41)
Fair Value	$ 3,731	$ 3,424

Investment Securities - Sched43

Investment Securities - Schedule of Available-for-Sale Securities in Gross Unrealized Loss Position (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 11,194	$ 21,141
Less than 12 Months, Gross Unrealized Losses	(94)	(419)
12 Months or Longer, Fair Value	9,270	5,905
12 Months or Longer, Gross Unrealized Losses	(193)	(116)
Total Fair Value	20,464	27,046
Total Gross Unrealized Losses	(287)	(535)
U.S. Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	1	1,060
Less than 12 Months, Gross Unrealized Losses	0	(49)
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	1	1,060
Total Gross Unrealized Losses	0	(49)
RMBS
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	9,708	17,027
Less than 12 Months, Gross Unrealized Losses	(85)	(331)
12 Months or Longer, Fair Value	8,248	5,010
12 Months or Longer, Gross Unrealized Losses	(171)	(90)
Total Fair Value	17,956	22,037
Total Gross Unrealized Losses	(256)	(421)
RMBS | Agency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	9,699	16,899
Less than 12 Months, Gross Unrealized Losses	(85)	(329)
12 Months or Longer, Fair Value	8,237	4,865
12 Months or Longer, Gross Unrealized Losses	(171)	(83)
Total Fair Value	17,936	21,764
Total Gross Unrealized Losses	(256)	(412)
RMBS | Non-Agency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	9	128
Less than 12 Months, Gross Unrealized Losses	0	(2)
12 Months or Longer, Fair Value	11	145
12 Months or Longer, Gross Unrealized Losses	0	(7)
Total Fair Value	20	273
Total Gross Unrealized Losses	0	(9)
CMBS
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	1,005	2,450
Less than 12 Months, Gross Unrealized Losses	(8)	(32)
12 Months or Longer, Fair Value	970	874
12 Months or Longer, Gross Unrealized Losses	(22)	(26)
Total Fair Value	1,975	3,324
Total Gross Unrealized Losses	(30)	(58)
CMBS | Agency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	828	1,624
Less than 12 Months, Gross Unrealized Losses	(8)	(21)
12 Months or Longer, Fair Value	818	745
12 Months or Longer, Gross Unrealized Losses	(20)	(24)
Total Fair Value	1,646	2,369
Total Gross Unrealized Losses	(28)	(45)
CMBS | Non-Agency
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	177	826
Less than 12 Months, Gross Unrealized Losses	0	(11)
12 Months or Longer, Fair Value	152	129
12 Months or Longer, Gross Unrealized Losses	(2)	(2)
Total Fair Value	329	955
Total Gross Unrealized Losses	(2)	(13)
Other ABS
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	116	187
Less than 12 Months, Gross Unrealized Losses	0	(1)
12 Months or Longer, Fair Value	52	21
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	168	208
Total Gross Unrealized Losses	0	(1)
Other securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	364	417
Less than 12 Months, Gross Unrealized Losses	(1)	(6)
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Gross Unrealized Losses	0	0
Total Fair Value	364	417
Total Gross Unrealized Losses	$ (1)	$ (6)

Investment Securities - Sched44

Investment Securities - Schedule of Contractual Maturities for Available for Sale Securities (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost
Due in 1 year or less	$ 730
Due after 1 year through 5 years	2,983
Due after 5 years through 10 years	6,650
Due after 10 years	29,076
Total Amortized Cost	39,439	$ 40,733
Fair Value
Due in 1 year or less	731
Due after 1 year through 5 years	3,013
Due after 5 years through 10 years	6,694
Due after 10 years	29,304
Available-for-sale Securities	$ 39,742	$ 40,737

Investment Securities - Sched45

Investment Securities - Schedule of Contractual Maturities of Securities Held to Maturity (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Carrying Value
Due in 1 year or less	$ 200
Due after 1 year through 5 years	753
Due after 5 years through 10 years	598
Due after 10 years	27,099
Carrying Value	28,650	$ 25,712
Fair Value
Due in 1 year or less	199
Due after 1 year through 5 years	795
Due after 5 years through 10 years	625
Due after 10 years	27,708
Fair Value	$ 29,327	$ 26,196

Investment Securities - Sched46

Investment Securities - Schedule of Expected Maturities and Weighted Average Yields of Investment Securities by Major Security Type (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Securities available for sale
Due in 1 Year or Less	$ 1,203
Due 1 Year through 5 Years	17,533
Due 5 Years through 10 Years	20,676
Due 10 Years	330
Available-for-sale Securities	39,742	$ 40,737
Amortized cost of securities available for sale
Due in 1 Year or Less	1,204
Due 1 Year through 5 Years	17,346
Due 5 Years through 10 Years	20,598
Due 10 Years	291
Total Amortized Cost	$ 39,439	40,733
Weighted average yield for securities available for sale
Due in 1 Year or Less	1.42%
Due 1 Year through 5 Years	2.51%
Due 5 Years through 10 Years	2.32%
Due 10 Years	6.26%
Total weighted average yield	2.40%
Carrying value of securities held to maturity
Due in 1 Year or Less	$ 221
Due 1 Year through 5 Years	3,736
Due 5 Years through 10 Years	19,049
Due 10 Years	5,644
Carrying Value	28,650	25,712
Fair value of securities held to maturity
Due in 1 Year or Less	220
Due 1 Year through 5 Years	3,832
Due 5 Years through 10 Years	19,513
Due 10 Years	5,762
Fair Value	$ 29,327	26,196
Weighted average yield for securities held to maturity
Due in 1 Year or Less	0.67%
Due 1 Year through 5 Years	2.52%
Due 5 Years through 10 Years	2.67%
Due 10 Years	3.33%
Total weighted average yield	2.76%
U.S. Treasury securities
Carrying value of securities held to maturity
Due in 1 Year or Less	$ 199
Due 1 Year through 5 Years	0
Due 5 Years through 10 Years	0
Due 10 Years	0
Carrying Value	199	199
Fair value of securities held to maturity
Fair Value	199	199
U.S. Treasury securities
Securities available for sale
Due in 1 Year or Less	202
Due 1 Year through 5 Years	647
Due 5 Years through 10 Years	4,290
Due 10 Years	0
Available-for-sale Securities	5,139	5,065
Amortized cost of securities available for sale
Total Amortized Cost	5,110	5,103
RMBS
Securities available for sale
Due in 1 Year or Less	184
Due 1 Year through 5 Years	13,180
Due 5 Years through 10 Years	14,640
Due 10 Years	234
Available-for-sale Securities	28,238	29,249
Amortized cost of securities available for sale
Total Amortized Cost	27,983	29,179
RMBS | Agency
Securities available for sale
Due in 1 Year or Less	173
Due 1 Year through 5 Years	12,086
Due 5 Years through 10 Years	13,780
Due 10 Years	0
Available-for-sale Securities	26,039	26,527
Amortized cost of securities available for sale
Total Amortized Cost	26,186	26,830
Carrying value of securities held to maturity
Due in 1 Year or Less	22
Due 1 Year through 5 Years	1,781
Due 5 Years through 10 Years	18,421
Due 10 Years	4,571
Carrying Value	24,795	22,125
Fair value of securities held to maturity
Fair Value	25,397	22,573
RMBS | Non-Agency
Securities available for sale
Due in 1 Year or Less	11
Due 1 Year through 5 Years	1,094
Due 5 Years through 10 Years	860
Due 10 Years	234
Available-for-sale Securities	2,199	2,722
Amortized cost of securities available for sale
Total Amortized Cost	1,797	2,349
CMBS
Securities available for sale
Due in 1 Year or Less	329
Due 1 Year through 5 Years	3,106
Due 5 Years through 10 Years	1,394
Due 10 Years	0
Available-for-sale Securities	4,829	4,988
Amortized cost of securities available for sale
Total Amortized Cost	4,816	5,011
CMBS | Agency
Securities available for sale
Due in 1 Year or Less	151
Due 1 Year through 5 Years	1,899
Due 5 Years through 10 Years	971
Due 10 Years	0
Available-for-sale Securities	3,021	3,304
Amortized cost of securities available for sale
Total Amortized Cost	3,033	3,335
Carrying value of securities held to maturity
Due in 1 Year or Less	0
Due 1 Year through 5 Years	1,955
Due 5 Years through 10 Years	628
Due 10 Years	1,073
Carrying Value	3,656	3,388
Fair value of securities held to maturity
Fair Value	3,731	3,424
CMBS | Non-Agency
Securities available for sale
Due in 1 Year or Less	178
Due 1 Year through 5 Years	1,207
Due 5 Years through 10 Years	423
Due 10 Years	0
Available-for-sale Securities	1,808	1,684
Amortized cost of securities available for sale
Total Amortized Cost	1,783	1,676
Other ABS
Securities available for sale
Due in 1 Year or Less	282
Due 1 Year through 5 Years	265
Due 5 Years through 10 Years	0
Due 10 Years	0
Available-for-sale Securities	547	714
Amortized cost of securities available for sale
Total Amortized Cost	546	714
Other securities
Securities available for sale
Due in 1 Year or Less	206
Due 1 Year through 5 Years	335
Due 5 Years through 10 Years	352
Due 10 Years	96
Available-for-sale Securities	989	721
Amortized cost of securities available for sale
Total Amortized Cost	$ 984	$ 726

Investment Securities - Sched47

Investment Securities - Schedule of Credit Losses Related to Debt Securities Recognized in Earnings (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Credit loss component, beginning of period	$ 207	$ 204	$ 207	$ 199
Additions:
Initial credit impairment	1	0	1	1
Subsequent credit impairment	0	0	1	7
Total additions	1	0	2	8
Reductions due to payoffs, disposals, transfers and other	(61)	0	(62)	(3)
Credit loss component, end of period	$ 147	$ 204	$ 147	$ 204

Investment Securities - Sched48

Investment Securities - Schedule of Gross Realized Gains and Losses on Available-for-Sale Securities and OTTI Recognized in Earnings (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Realized gains (losses):
Gross realized gains	$ 118	$ 2	$ 123	$ 8
Gross realized losses	(49)	(1)	(54)	(5)
Net realized gains	69	1	69	3
OTTI recognized in earnings:
Credit-related OTTI	(1)	0	(2)	(8)
Intent to Sell OTTI	0	0	(3)	(2)
Total OTTI recognized in earnings	(1)	0	(5)	(10)
Net securities gains (losses)	68	1	64	(7)
Proceeds from sales	$ 2,670	$ 828	$ 5,793	$ 3,528

Investment Securities - Sched49

Investment Securities - Schedule of Outstanding Contractual Balance and Carrying Value of Acquired Credit-Impaired Debt Securities (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Outstanding Balance and Carrying Value of Acquired Securities
Outstanding balance	$ 2,226	$ 2,899
Carrying value	$ 1,913	$ 2,277

Investment Securities - Sched50

Investment Securities - Schedule of Changes in Accretable Yield of Acquired Securities (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Changes in Accretable Yield of Acquired Securities [Roll Forward]
Accretable yield beginning balance	$ 1,093	$ 1,173
Accretion recognized in earnings	(46)	(144)
Reduction due to payoffs, disposals, transfers and other	(154)	(157)
Net reclassifications from (to) nonaccretable difference	(35)	(14)
Accretable yield ending balance	$ 858	$ 858

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Mortgage loans in process of foreclosure	$ 310	$ 382
Loans and Leases Receivable, Impaired, Commitment to Lend	243	208
Performing
Loans and Leases Receivable Disclosure [Line Items]
Troubled debt restructurings included in impaired loans	2,400	2,500
Home loan | Other Assets
Loans and Leases Receivable Disclosure [Line Items]
Real estate acquired through foreclosure	47	69
Consumer Portfolio Segment [Member] | Performing
Loans and Leases Receivable Disclosure [Line Items]
Troubled debt restructurings included in impaired loans	1,200	1,100
Commercial Banking | Criticized
Loans and Leases Receivable Disclosure [Line Items]
Minimum loan amount reviewed quarterly by management for further deterioration	1
Commercial Banking | Noncriticized
Loans and Leases Receivable Disclosure [Line Items]
Minimum loan amount requiring annual review	1
Commercial Banking | Performing
Loans and Leases Receivable Disclosure [Line Items]
Troubled debt restructurings included in impaired loans	526	487
Federal Home Loan Bank Advances [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans Pledged as Collateral	28,500	29,300
Line of Credit Facility, Remaining Borrowing Capacity	$ 22,900	$ 24,900

Loans - Loan Portfolio Composit

Loans - Loan Portfolio Composition and Aging Analysis (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	$ 232,246	$ 222,480
Past due	8,191	8,035
Loans held for investment	$ 252,422	$ 245,586	$ 238,019
Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract]
Financing Receivable, Percent Current	92.01%	90.59%
Total Delinquent Loans (as percent)	3.24%	3.27%
Total Loans (as percent)	100.00%	100.00%
Loans and Leases Receivable, Deferred Income	$ 739	$ 558
Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	104,820	101,394
Past due	4,279	4,156
Loans held for investment	109,130	105,552
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	60,626	55,190
Past due	3,487	3,408
Loans held for investment	75,564	73,054
Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	49,945	44,762
Past due	3,345	3,154
Loans held for investment	53,290	47,916
Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	7,294	6,951
Past due	96	205
Loans held for investment	18,820	21,584
Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	3,387	3,477
Past due	46	49
Loans held for investment	3,454	3,554
Commercial Banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	66,746	65,840
Past due	421	463
Loans held for investment	67,670	66,916
Commercial Banking | Total commercial lending
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	66,334	65,367
Past due	413	453
Loans held for investment	67,250	66,433
Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	27,839	26,536
Past due	80	45
Loans held for investment	27,944	26,609
Commercial Banking | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	38,495	38,831
Past due	333	408
Loans held for investment	39,306	39,824
Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	412	473
Past due	8	10
Loans held for investment	420	483
Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	54	56
Past due	4	8
Loans held for investment	58	64
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	$ 11,985	$ 15,071
Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract]
Total Loans (as percent)	4.75%	6.14%
Receivables Acquired with Deteriorated Credit Quality [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	$ 31	$ 2
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	11,451	14,456
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	0	0
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	11,430	14,428
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	21	28
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	503	613
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Banking | Total commercial lending
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	503	613
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	25	28
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Banking | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	478	585
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment		0
Receivables Acquired with Deteriorated Credit Quality [Member] | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	0	0
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	$ 3,608	$ 3,466
Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract]
Total Delinquent Loans (as percent)	1.43%	1.41%
Financing Receivables, 30 to 59 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	$ 1,358	$ 1,277
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	2,182	2,107
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	2,125	2,041
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	36	44
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	21	22
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	67	79
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Banking | Total commercial lending
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	64	72
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	12	45
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Banking | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	52	27
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	3	7
Financing Receivables, 30 to 59 Days Past Due [Member] | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	1	3
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	$ 2,008	$ 1,920
Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract]
Total Delinquent Loans (as percent)	0.79%	0.78%
Financing Receivables, 60 to 89 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	$ 949	$ 918
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	963	917
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	944	890
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	12	20
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	7	7
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	95	85
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Banking | Total commercial lending
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	94	84
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	1	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Banking | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	93	84
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	1	1
Financing Receivables, 60 to 89 Days Past Due [Member] | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	1	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	$ 2,575	$ 2,649
Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract]
Total Delinquent Loans (as percent)	1.02%	1.08%
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	$ 1,972	$ 1,961
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	342	384
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	276	223
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	48	141
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	18	20
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	259	299
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Banking | Total commercial lending
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	255	297
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	67	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Banking | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	188	297
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	4	2
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Other
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	2	5
Geographic Distribution, Domestic [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	96,010	93,279
Past due	3,940	3,839
Loans held for investment	99,981	97,120
Geographic Distribution, Domestic [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	31	2
Geographic Distribution, Domestic [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	1,223	1,153
Geographic Distribution, Domestic [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	871	846
Geographic Distribution, Domestic [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	1,846	1,840
Geographic Distribution, Foreign [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	8,810	8,115
Past due	339	317
Loans held for investment	9,149	8,432
Geographic Distribution, Foreign [Member] | Receivables Acquired with Deteriorated Credit Quality [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	0	0
Geographic Distribution, Foreign [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	135	124
Geographic Distribution, Foreign [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	78	72
Geographic Distribution, Foreign [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Past due	126	121
Operating Segments [Member] | Consumer Banking
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans held for investment	75,564	66,916	$ 72,285
Federal Home Loan Bank Advances [Member]
Financing Receivable, Recorded Investment, Aging, Percent of Total Loan [Abstract]
Loans Pledged as Collateral	$ 28,500	$ 29,300

Loans - 90+ Day Delinquent Loan

Loans - 90+ Day Delinquent Loans Accruing Interest and Nonperforming Loans (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	$ 1,970	$ 1,936
Loans and Leases Receivable, Gross	252,422	245,586	$ 238,019
Nonperforming Loans	$ 1,354	$ 1,599
Percent 90 days past due and still accruing	0.78%	0.79%
Financing Receivable, Nonaccrual, Percent Past Due	0.54%	0.65%
Credit Card Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	$ 1,966	$ 1,936
Loans and Leases Receivable, Gross	109,130	105,552
Nonperforming Loans	25	42
Credit Card Portfolio Segment [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	1,846	1,840
Loans and Leases Receivable, Gross	99,981	97,120
Credit Card Portfolio Segment [Member] | Geographic Distribution, Foreign [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	120	96
Loans and Leases Receivable, Gross	9,149	8,432
Nonperforming Loans	25	42
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	0	0
Loans and Leases Receivable, Gross	75,564	73,054
Nonperforming Loans	$ 537	$ 527
Financing Receivable, Nonaccrual, Percent Past Due	0.71%	0.72%
Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	$ 0	$ 0
Loans and Leases Receivable, Gross	53,290	47,916
Nonperforming Loans	$ 346	$ 223
Financing Receivable, Nonaccrual, Percent Past Due	0.65%	0.47%
Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	$ 0	$ 0
Loans and Leases Receivable, Gross	18,820	21,584
Nonperforming Loans	$ 158	$ 273
Financing Receivable, Nonaccrual, Percent Past Due	0.84%	1.26%
Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	$ 0	$ 0
Loans and Leases Receivable, Gross	3,454	3,554
Nonperforming Loans	$ 33	$ 31
Financing Receivable, Nonaccrual, Percent Past Due	0.97%	0.86%
Commercial Banking
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	$ 4	$ 0
Loans and Leases Receivable, Gross	67,670	66,916
Nonperforming Loans		1,022
Commercial Banking | Total commercial lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	4	0
Loans and Leases Receivable, Gross	67,250	66,433
Nonperforming Loans	781	1,018
Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	4	0
Loans and Leases Receivable, Gross	27,944	26,609
Nonperforming Loans	64	30
Commercial Banking | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	0	0
Loans and Leases Receivable, Gross	39,306	39,824
Nonperforming Loans	717	988
Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	0	0
Loans and Leases Receivable, Gross	420	483
Nonperforming Loans	7	4
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 Days Past Due and Accruing	0	0
Loans and Leases Receivable, Gross	58	64
Nonperforming Loans	$ 4	$ 8

Loans - Credit Card_ Risk Profi

Loans - Credit Card: Risk Profile by Geographic Region and Delinquency Status (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Percent Past Due	3.24%	3.27%
Financing Receivable, Recorded Investment, Past Due	$ 8,191	$ 8,035
Loans held for investment	252,422	245,586	$ 238,019
Credit Card Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,279	4,156
Loans held for investment	$ 109,130	$ 105,552
Percentage of portfolio	100.00%	100.00%
Credit Card Portfolio Segment [Member] | California
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 10,946	$ 11,068
Percentage of portfolio	10.00%	10.50%
Credit Card Portfolio Segment [Member] | Texas
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,474	$ 7,227
Percentage of portfolio	6.80%	6.80%
Credit Card Portfolio Segment [Member] | New York
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,069	$ 7,090
Percentage of portfolio	6.50%	6.70%
Credit Card Portfolio Segment [Member] | Florida
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 6,453	$ 6,540
Percentage of portfolio	5.90%	6.20%
Credit Card Portfolio Segment [Member] | Illinois
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 4,499	$ 4,492
Percentage of portfolio	4.10%	4.30%
Credit Card Portfolio Segment [Member] | Pennsylvania
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 4,294	$ 4,048
Percentage of portfolio	3.90%	3.80%
Credit Card Portfolio Segment [Member] | Ohio
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,689	$ 3,654
Percentage of portfolio	3.40%	3.50%
Credit Card Portfolio Segment [Member] | New Jersey
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,441	$ 3,488
Percentage of portfolio	3.20%	3.30%
Credit Card Portfolio Segment [Member] | Michigan
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,334	$ 3,164
Percentage of portfolio	3.10%	3.00%
Credit Card Portfolio Segment [Member] | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 48,782	$ 46,349
Percentage of portfolio	44.70%	43.90%
Credit Card Portfolio Segment [Member] | Canada
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 6,070	$ 5,594
Percentage of portfolio	5.60%	5.30%
Credit Card Portfolio Segment [Member] | United Kingdom
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,079	$ 2,838
Percentage of portfolio	2.80%	2.70%
Credit Card Portfolio Segment [Member] | Geographic Distribution, Domestic [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 3,940	$ 3,839
Loans held for investment	$ 99,981	$ 97,120
Percentage of portfolio	91.60%	92.00%
Credit Card Portfolio Segment [Member] | Geographic Distribution, Foreign [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 339	$ 317
Loans held for investment	$ 9,149	$ 8,432
Percentage of portfolio	8.40%	8.00%

Loans - Credit Card_ Net Charge

Loans - Credit Card: Net Charge-Offs (Detail) - Credit Card Portfolio Segment [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Line Items]
Net charge-offs	$ 1,155	$ 906	$ 3,682	$ 2,805
Percentage annualized net charge-off by average loans held for investment	4.51%	3.70%	4.85%	3.93%
Percentage Annualized Net Charge-Offs by Average Loans Held for Investment, Excluding Loans Acquired Impact	4.52%		4.85%
Geographic Distribution, Domestic [Member]
Loans and Leases Receivable Disclosure [Line Items]
Net charge-offs	$ 1,087	$ 841	$ 3,455	$ 2,602
Percentage annualized net charge-off by average loans held for investment	4.64%	3.74%	4.96%	3.99%
Percentage Annualized Net Charge-Offs by Average Loans Held for Investment, Excluding Loans Acquired Impact	4.66%		4.97%
Geographic Distribution, Foreign [Member]
Loans and Leases Receivable Disclosure [Line Items]
Net charge-offs	$ 68	$ 65	$ 227	$ 203
Percentage annualized net charge-off by average loans held for investment	3.08%	3.18%	3.60%	3.32%

Loans - Consumer Banking_ Risk

Loans - Consumer Banking: Risk Profile by Geographic Region, Delinquency Status and Performing Status (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 252,422	$ 245,586	$ 238,019
Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 75,564	$ 73,054
Percentage of portfolio	100.00%	100.00%
Consumer Portfolio Segment [Member] | Auto
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 53,290	$ 47,916
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 53,290	$ 47,916
Percentage of portfolio	70.50%	65.60%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Texas
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 6,961	$ 6,304
Percentage of portfolio	9.20%	8.60%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | California
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 6,052	$ 5,448
Percentage of portfolio	8.00%	7.50%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Florida
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 4,402	$ 3,985
Percentage of portfolio	5.80%	5.50%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Georgia
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 2,715	$ 2,506
Percentage of portfolio	3.60%	3.40%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Louisiana
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 2,260	$ 2,159
Percentage of portfolio	3.00%	3.00%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Ohio
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 2,265	$ 2,017
Percentage of portfolio	3.00%	2.80%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Illinois
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 2,188	$ 2,065
Percentage of portfolio	2.90%	2.80%
Consumer Portfolio Segment [Member] | Auto | Loans Receivable | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 26,447	$ 23,432
Percentage of portfolio	35.00%	32.00%
Consumer Portfolio Segment [Member] | Home loan
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,820	$ 21,584
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,820	$ 21,584
Percentage of portfolio	24.90%	29.50%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Texas
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 883	$ 823
Percentage of portfolio	1.20%	1.10%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | California
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 4,115	$ 4,993
Percentage of portfolio	5.40%	6.80%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Illinois
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,053	$ 1,218
Percentage of portfolio	1.40%	1.70%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,395	$ 8,789
Percentage of portfolio	9.80%	12.00%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | New York
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,985	$ 2,036
Percentage of portfolio	2.60%	2.80%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Maryland
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,287	$ 1,409
Percentage of portfolio	1.70%	1.90%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | Virginia
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,102	$ 1,204
Percentage of portfolio	1.50%	1.70%
Consumer Portfolio Segment [Member] | Home loan | Loans Receivable | Geographic Concentration Risk | New Jersey
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,000	$ 1,112
Percentage of portfolio	1.30%	1.50%
Consumer Portfolio Segment [Member] | Retail banking
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,454	$ 3,554
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,454	$ 3,554
Percentage of portfolio	4.60%	4.90%
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Texas
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 718	$ 756
Percentage of portfolio	1.00%	1.00%
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Louisiana
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 977	$ 1,010
Percentage of portfolio	1.30%	1.40%
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 265	$ 263
Percentage of portfolio	0.40%	0.40%
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | New York
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 934	$ 941
Percentage of portfolio	1.20%	1.30%
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Maryland
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 187	$ 190
Percentage of portfolio	0.20%	0.30%
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | Virginia
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 154	$ 156
Percentage of portfolio	0.20%	0.20%
Consumer Portfolio Segment [Member] | Retail banking | Loans Receivable | Geographic Concentration Risk | New Jersey
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 219	$ 238
Percentage of portfolio	0.30%	0.30%

Loans - Consumer Banking_ Net C

Loans - Consumer Banking: Net Charge-Offs and Nonperforming Loans (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Line Items]
Nonperforming Loans	$ 1,354	$ 1,599	$ 1,354		$ 1,354
Financing Receivable, Nonaccrual, Percent Past Due	0.54%	0.65%	0.54%		0.54%
Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Net charge-offs			$ 276	$ 227	$ 726	$ 556
Percentage annualized net charge-off by average loans held for investment			1.47%	1.26%	1.30%	1.04%
Nonperforming Loans	$ 537	$ 527	$ 537		$ 537
Financing Receivable, Nonaccrual, Percent Past Due	0.71%	0.72%	0.71%		0.71%
Percentage annualized net charge-off by average loans held for investment, excluding loans acquired (as percent)			1.74%	1.62%	1.57%	1.37%
Nonperforming loans, excluding acquired loans (as percent)	0.84%	0.90%
Consumer Portfolio Segment [Member] | Auto
Loans and Leases Receivable Disclosure [Line Items]
Net charge-offs			$ 257	$ 210	$ 671	$ 508
Percentage annualized net charge-off by average loans held for investment			1.96%	1.85%	1.77%	1.55%
Nonperforming Loans	$ 346	$ 223	$ 346		$ 346
Financing Receivable, Nonaccrual, Percent Past Due	0.65%	0.47%	0.65%		0.65%
Consumer Portfolio Segment [Member] | Home loan
Loans and Leases Receivable Disclosure [Line Items]
Net charge-offs			$ 1	$ 1	$ 5	$ 9
Percentage annualized net charge-off by average loans held for investment			0.02%	0.03%	0.03%	0.05%
Nonperforming Loans	$ 158	$ 273	$ 158		$ 158
Financing Receivable, Nonaccrual, Percent Past Due	0.84%	1.26%	0.84%		0.84%
Percentage annualized net charge-off by average loans held for investment, excluding loans acquired (as percent)			0.06%	0.08%	0.08%	0.18%
Nonperforming loans, excluding acquired loans (as percent)	2.13%	3.81%
Consumer Portfolio Segment [Member] | Retail banking
Loans and Leases Receivable Disclosure [Line Items]
Net charge-offs			$ 18	$ 16	$ 50	$ 39
Percentage annualized net charge-off by average loans held for investment			2.10%	1.75%	1.91%	1.46%
Nonperforming Loans	$ 33	$ 31	$ 33		$ 33
Financing Receivable, Nonaccrual, Percent Past Due	0.97%	0.86%	0.97%		0.97%

Loans - Home Loan_ Risk Profile

Loans - Home Loan: Risk Profile by Vintage, Geography, Lien Priority and Interest Rate Type (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 252,422	$ 245,586	$ 238,019
Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 75,564	$ 73,054
Percentage of portfolio	100.00%	100.00%
Consumer Portfolio Segment [Member] | Home loan
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,820	$ 21,584
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,820	$ 21,584
Percentage of portfolio	100.00%	100.00%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | Origination during or before 2008
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 9,497	$ 11,850
Percentage of portfolio	50.50%	54.90%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2009
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 898	$ 1,168
Percentage of portfolio	4.80%	5.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2010
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,238	$ 1,644
Percentage of portfolio	6.60%	7.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2011
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,392	$ 1,822
Percentage of portfolio	7.40%	8.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2012
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 919	$ 1,237
Percentage of portfolio	4.90%	5.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2013
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 450	$ 524
Percentage of portfolio	2.40%	2.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2014
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 519	$ 588
Percentage of portfolio	2.70%	2.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2015
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 964	$ 1,054
Percentage of portfolio	5.10%	4.90%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,670	$ 1,697
Percentage of portfolio	8.80%	7.90%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Origination Year Concentration Risk | 2017
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,273
Percentage of portfolio	6.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,820	$ 21,584
Percentage of portfolio	100.00%	100.00%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | California
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 4,115	$ 4,993
Percentage of portfolio	21.90%	23.10%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | New York
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,985	$ 2,036
Percentage of portfolio	10.50%	9.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | Maryland
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,287	$ 1,409
Percentage of portfolio	6.80%	6.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | Illinois
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,053	$ 1,218
Percentage of portfolio	5.60%	5.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | Virginia
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,102	$ 1,204
Percentage of portfolio	5.90%	5.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | New Jersey
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,000	$ 1,112
Percentage of portfolio	5.30%	5.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | Louisiana
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 867	$ 985
Percentage of portfolio	4.60%	4.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | Florida
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 802	$ 931
Percentage of portfolio	4.30%	4.30%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | TEXAS
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 883	$ 823
Percentage of portfolio	4.70%	3.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | ARIZONA
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 728	$ 888
Percentage of portfolio	3.90%	4.10%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 4,998	$ 5,985
Percentage of portfolio	26.50%	27.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Lien Type Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,820	$ 21,584
Percentage of portfolio	100.00%	100.00%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Lien Type Concentration Risk | 1st lien
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 17,607	$ 20,341
Percentage of portfolio	93.60%	94.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Lien Type Concentration Risk | 2nd lien
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,213	$ 1,243
Percentage of portfolio	6.40%	5.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Interest Rate Type Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,820	$ 21,584
Percentage of portfolio	100.00%	100.00%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Interest Rate Type Concentration Risk | Fixed rate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 5,378	$ 5,216
Percentage of portfolio	28.60%	24.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Interest Rate Type Concentration Risk | Adjustable rate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 13,442	$ 16,368
Percentage of portfolio	71.40%	75.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,390	$ 7,156
Percentage of portfolio	39.30%	33.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | Origination during or before 2008
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,689	$ 2,166
Percentage of portfolio	9.00%	10.00%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2009
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 65	$ 80
Percentage of portfolio	0.30%	0.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2010
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 66	$ 82
Percentage of portfolio	0.40%	0.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2011
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 120	$ 139
Percentage of portfolio	0.60%	0.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2012
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 727	$ 969
Percentage of portfolio	3.90%	4.50%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2013
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 402	$ 465
Percentage of portfolio	2.10%	2.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2014
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 491	$ 557
Percentage of portfolio	2.60%	2.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2015
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 936	$ 1,024
Percentage of portfolio	5.00%	4.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,647	$ 1,674
Percentage of portfolio	8.70%	7.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Origination Year Concentration Risk | 2017
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,247
Percentage of portfolio	6.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,390	$ 7,156
Percentage of portfolio	39.30%	33.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | California
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 999	$ 976
Percentage of portfolio	5.30%	4.50%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | New York
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,400	$ 1,343
Percentage of portfolio	7.40%	6.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | Maryland
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 610	$ 585
Percentage of portfolio	3.20%	2.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | Illinois
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 154	$ 108
Percentage of portfolio	0.80%	0.50%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | Virginia
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 538	$ 490
Percentage of portfolio	2.90%	2.30%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | New Jersey
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 391	$ 379
Percentage of portfolio	2.10%	1.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | Louisiana
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 848	$ 962
Percentage of portfolio	4.50%	4.50%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | Florida
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 184	$ 159
Percentage of portfolio	1.00%	0.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | TEXAS
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 804	$ 725
Percentage of portfolio	4.30%	3.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | ARIZONA
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 94	$ 89
Percentage of portfolio	0.50%	0.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,368	$ 1,340
Percentage of portfolio	7.30%	6.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Lien Type Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,390	$ 7,156
Percentage of portfolio	39.30%	33.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Lien Type Concentration Risk | 1st lien
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 6,414	$ 6,182
Percentage of portfolio	34.10%	28.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Lien Type Concentration Risk | 2nd lien
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 976	$ 974
Percentage of portfolio	5.20%	4.50%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Interest Rate Type Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,390	$ 7,156
Percentage of portfolio	39.30%	33.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Interest Rate Type Concentration Risk | Fixed rate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,725	$ 3,394
Percentage of portfolio	19.80%	15.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Loans excluding Acquired Loans | Interest Rate Type Concentration Risk | Adjustable rate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,665	$ 3,762
Percentage of portfolio	19.50%	17.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 11,430	$ 14,428
Percentage of portfolio	60.70%	66.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | Origination during or before 2008
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7,808	$ 9,684
Percentage of portfolio	41.50%	44.90%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2009
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 833	$ 1,088
Percentage of portfolio	4.50%	5.00%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2010
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,172	$ 1,562
Percentage of portfolio	6.20%	7.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2011
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,272	$ 1,683
Percentage of portfolio	6.80%	7.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2012
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 192	$ 268
Percentage of portfolio	1.00%	1.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2013
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 48	$ 59
Percentage of portfolio	0.30%	0.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2014
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 28	$ 31
Percentage of portfolio	0.10%	0.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2015
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 28	$ 30
Percentage of portfolio	0.10%	0.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 23	$ 23
Percentage of portfolio	0.10%	0.10%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Origination Year Concentration Risk | 2017
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 26
Percentage of portfolio	0.10%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 11,430	$ 14,428
Percentage of portfolio	60.70%	66.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | California
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,116	$ 4,017
Percentage of portfolio	16.60%	18.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | New York
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 585	$ 693
Percentage of portfolio	3.10%	3.20%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | Maryland
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 677	$ 824
Percentage of portfolio	3.60%	3.90%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | Illinois
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 899	$ 1,110
Percentage of portfolio	4.80%	5.10%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | Virginia
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 564	$ 714
Percentage of portfolio	3.00%	3.30%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | New Jersey
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 609	$ 733
Percentage of portfolio	3.20%	3.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | Louisiana
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 19	$ 23
Percentage of portfolio	0.10%	0.10%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | Florida
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 618	$ 772
Percentage of portfolio	3.30%	3.60%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | TEXAS
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 79	$ 98
Percentage of portfolio	0.40%	0.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | ARIZONA
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 634	$ 799
Percentage of portfolio	3.40%	3.70%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,630	$ 4,645
Percentage of portfolio	19.20%	21.50%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Lien Type Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 11,430	$ 14,428
Percentage of portfolio	60.70%	66.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Lien Type Concentration Risk | 1st lien
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 11,193	$ 14,159
Percentage of portfolio	59.50%	65.50%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Lien Type Concentration Risk | 2nd lien
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 237	$ 269
Percentage of portfolio	1.20%	1.30%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Interest Rate Type Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 11,430	$ 14,428
Percentage of portfolio	60.70%	66.80%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Interest Rate Type Concentration Risk | Fixed rate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 1,653	$ 1,822
Percentage of portfolio	8.80%	8.40%
Consumer Portfolio Segment [Member] | Home loan | Home Loans Receivable | Acquired Loans | Interest Rate Type Concentration Risk | Adjustable rate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 9,777	$ 12,606
Percentage of portfolio	51.90%	58.40%

Loans - Commercial Banking_ Ris

Loans - Commercial Banking: Risk Profile by Geographic Region and Internal Risk Rating (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 252,422	$ 245,586	$ 238,019
Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	11,985	15,071
Commercial Banking
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 67,670	$ 66,916
Percentage of portfolio	100.00%	100.00%
Commercial Banking | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 503	$ 613
Commercial Banking | Commercial and multifamily real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 27,944	$ 26,609
Percentage of portfolio	100.00%	100.00%
Commercial Banking | Commercial and multifamily real estate | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 25	$ 28
Commercial Banking | Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 39,306	$ 39,824
Percentage of portfolio	100.00%	100.00%
Commercial Banking | Commercial and industrial | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 478	$ 585
Commercial Banking | Small-ticket commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 420	$ 483
Percentage of portfolio	100.00%	100.00%
Commercial Banking | Small-ticket commercial real estate | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment		$ 0
Commercial Banking | Loans Receivable | Geographic Concentration Risk | Northeast
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 25,059	$ 25,640
Percentage of portfolio	37.10%	38.30%
Commercial Banking | Loans Receivable | Geographic Concentration Risk | Mid-Atlantic
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 6,985	$ 6,490
Percentage of portfolio	10.30%	9.70%
Commercial Banking | Loans Receivable | Geographic Concentration Risk | South
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 18,710	$ 19,259
Percentage of portfolio	27.60%	28.80%
Commercial Banking | Loans Receivable | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 16,916	$ 15,527
Percentage of portfolio	25.00%	23.20%
Commercial Banking | Loans Receivable | Internal Risk Rating Concentration Risk | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 503	$ 613
Percentage of portfolio	0.70%	0.90%
Commercial Banking | Loans Receivable | Internal Risk Rating Concentration Risk | Noncriticized
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 63,501	$ 62,828
Percentage of portfolio	93.80%	93.90%
Commercial Banking | Loans Receivable | Internal Risk Rating Concentration Risk | Criticized | Criticized performing
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 2,878	$ 2,453
Percentage of portfolio	4.30%	3.70%
Commercial Banking | Loans Receivable | Internal Risk Rating Concentration Risk | Criticized | Criticized nonperforming
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 788	$ 1,022
Percentage of portfolio	1.20%	1.50%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Geographic Concentration Risk | Northeast
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 16,302	$ 15,714
Percentage of portfolio	58.40%	59.00%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Geographic Concentration Risk | Mid-Atlantic
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,132	$ 3,024
Percentage of portfolio	11.20%	11.40%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Geographic Concentration Risk | South
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,692	$ 4,032
Percentage of portfolio	13.20%	15.20%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 4,818	$ 3,839
Percentage of portfolio	17.20%	14.40%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Internal Risk Rating Concentration Risk | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 25	$ 28
Percentage of portfolio	0.10%	0.10%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Internal Risk Rating Concentration Risk | Noncriticized
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 27,369	$ 26,309
Percentage of portfolio	98.00%	98.90%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Internal Risk Rating Concentration Risk | Criticized | Criticized performing
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 486	$ 242
Percentage of portfolio	1.70%	0.90%
Commercial Banking | Loans Receivable | Commercial and multifamily real estate | Internal Risk Rating Concentration Risk | Criticized | Criticized nonperforming
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 64	$ 30
Percentage of portfolio	0.20%	0.10%
Commercial Banking | Loans Receivable | Commercial and industrial | Geographic Concentration Risk | Northeast
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 8,498	$ 9,628
Percentage of portfolio	21.60%	24.20%
Commercial Banking | Loans Receivable | Commercial and industrial | Geographic Concentration Risk | Mid-Atlantic
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 3,838	$ 3,450
Percentage of portfolio	9.80%	8.70%
Commercial Banking | Loans Receivable | Commercial and industrial | Geographic Concentration Risk | South
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 14,991	$ 15,193
Percentage of portfolio	38.10%	38.10%
Commercial Banking | Loans Receivable | Commercial and industrial | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 11,979	$ 11,553
Percentage of portfolio	30.50%	29.00%
Commercial Banking | Loans Receivable | Commercial and industrial | Internal Risk Rating Concentration Risk | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 478	$ 585
Percentage of portfolio	1.20%	1.50%
Commercial Banking | Loans Receivable | Commercial and industrial | Internal Risk Rating Concentration Risk | Noncriticized
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 35,721	$ 36,046
Percentage of portfolio	90.90%	90.50%
Commercial Banking | Loans Receivable | Commercial and industrial | Internal Risk Rating Concentration Risk | Criticized | Criticized performing
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 2,390	$ 2,205
Percentage of portfolio	6.10%	5.50%
Commercial Banking | Loans Receivable | Commercial and industrial | Internal Risk Rating Concentration Risk | Criticized | Criticized nonperforming
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 717	$ 988
Percentage of portfolio	1.80%	2.50%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Geographic Concentration Risk | Northeast
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 259	$ 298
Percentage of portfolio	61.70%	61.70%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Geographic Concentration Risk | Mid-Atlantic
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 15	$ 16
Percentage of portfolio	3.60%	3.30%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Geographic Concentration Risk | South
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 27	$ 34
Percentage of portfolio	6.40%	7.00%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Geographic Concentration Risk | Other
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 119	$ 135
Percentage of portfolio	28.30%	28.00%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Internal Risk Rating Concentration Risk | Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 0	$ 0
Percentage of portfolio	0.00%	0.00%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Internal Risk Rating Concentration Risk | Noncriticized
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 411	$ 473
Percentage of portfolio	97.80%	97.90%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Internal Risk Rating Concentration Risk | Criticized | Criticized performing
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 2	$ 6
Percentage of portfolio	0.50%	1.30%
Commercial Banking | Loans Receivable | Small-ticket commercial real estate | Internal Risk Rating Concentration Risk | Criticized | Criticized nonperforming
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 7	$ 4
Percentage of portfolio	1.70%	0.80%
Operating Segments [Member] | Commercial Banking
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	$ 67,670	$ 66,916	$ 66,457

Loans - Impaired Loans, Excludi

Loans - Impaired Loans, Excluding Acquired Loans (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Impaired Financing Receivable:
With an Allowance	$ 2,412		$ 2,412		$ 2,660
Without an Allowance	454		454		507
Total Recorded Investment	2,866		2,866		3,167
Related Allowance	432		432		465
Net Recorded Investment	2,434		2,434		2,702
Unpaid Principal Balance	3,725		3,725		3,591
Average Recorded Investment	2,884	$ 2,992	2,975	$ 2,871
Interest Income Recognized	40	45	115	131
Credit Card Portfolio Segment [Member]
Impaired Financing Receivable:
With an Allowance	777		777		715
Without an Allowance	0		0		0
Total Recorded Investment	777		777		715
Related Allowance	288		288		239
Net Recorded Investment	489		489		476
Unpaid Principal Balance	758		758		695
Average Recorded Investment	761	663	743	662
Interest Income Recognized	19	18	55	51
Credit Card Portfolio Segment [Member] | Geographic Distribution, Domestic [Member]
Impaired Financing Receivable:
With an Allowance	612		612		581
Without an Allowance	0		0		0
Total Recorded Investment	612		612		581
Related Allowance	207		207		174
Net Recorded Investment	405		405		407
Unpaid Principal Balance	598		598		566
Average Recorded Investment	601	528	593	530
Interest Income Recognized	16	15	47	43
Credit Card Portfolio Segment [Member] | Geographic Distribution, Foreign [Member]
Impaired Financing Receivable:
With an Allowance	165		165		134
Without an Allowance	0		0		0
Total Recorded Investment	165		165		134
Related Allowance	81		81		65
Net Recorded Investment	84		84		69
Unpaid Principal Balance	160		160		129
Average Recorded Investment	160	135	150	132
Interest Income Recognized	3	3	8	8
Consumer Portfolio Segment [Member]
Impaired Financing Receivable:
With an Allowance	593		593		609
Without an Allowance	182		182		334
Total Recorded Investment	775		775		943
Related Allowance	55		55		57
Net Recorded Investment	720		720		886
Unpaid Principal Balance	1,089		1,089		1,336
Average Recorded Investment	833	916	873	919
Interest Income Recognized	15	23	44	69
Consumer Portfolio Segment [Member] | Auto
Impaired Financing Receivable:
With an Allowance	353		353		316
Without an Allowance	134		134		207
Total Recorded Investment	487		487		523
Related Allowance	32		32		24
Net Recorded Investment	455		455		499
Unpaid Principal Balance	738		738		807
Average Recorded Investment	485	498	498	495
Interest Income Recognized	13	21	39	64
Consumer Portfolio Segment [Member] | Home loan
Impaired Financing Receivable:
With an Allowance	190		190		241
Without an Allowance	36		36		117
Total Recorded Investment	226		226		358
Related Allowance	15		15		19
Net Recorded Investment	211		211		339
Unpaid Principal Balance	285		285		464
Average Recorded Investment	288	358	316	362
Interest Income Recognized	2	2	4	4
Consumer Portfolio Segment [Member] | Retail banking
Impaired Financing Receivable:
With an Allowance	50		50		52
Without an Allowance	12		12		10
Total Recorded Investment	62		62		62
Related Allowance	8		8		14
Net Recorded Investment	54		54		48
Unpaid Principal Balance	66		66		65
Average Recorded Investment	60	60	59	62
Interest Income Recognized	0	0	1	1
Commercial Banking
Impaired Financing Receivable:
With an Allowance	1,042		1,042		1,336
Without an Allowance	272		272		173
Total Recorded Investment	1,314		1,314		1,509
Related Allowance	89		89		169
Net Recorded Investment	1,225		1,225		1,340
Unpaid Principal Balance	1,878		1,878		1,560
Average Recorded Investment	1,290	1,413	1,359	1,290
Interest Income Recognized	6	4	16	11
Commercial Banking | Total commercial lending
Impaired Financing Receivable:
With an Allowance	1,035		1,035		1,332
Without an Allowance	272		272		173
Total Recorded Investment	1,307		1,307		1,505
Related Allowance	89		89		169
Net Recorded Investment	1,218		1,218		1,336
Unpaid Principal Balance	1,869		1,869		1,556
Average Recorded Investment	1,282	1,405	1,352	1,282
Interest Income Recognized	6	4	16	11
Commercial Banking | Commercial and multifamily real estate
Impaired Financing Receivable:
With an Allowance	142		142		83
Without an Allowance	25		25		29
Total Recorded Investment	167		167		112
Related Allowance	10		10		7
Net Recorded Investment	157		157		105
Unpaid Principal Balance	168		168		112
Average Recorded Investment	152	128	132	111
Interest Income Recognized	1	0	3	2
Commercial Banking | Commercial and industrial
Impaired Financing Receivable:
With an Allowance	893		893		1,249
Without an Allowance	247		247		144
Total Recorded Investment	1,140		1,140		1,393
Related Allowance	79		79		162
Net Recorded Investment	1,061		1,061		1,231
Unpaid Principal Balance	1,701		1,701		1,444
Average Recorded Investment	1,130	1,277	1,220	1,171
Interest Income Recognized	5	4	13	9
Commercial Banking | Small-ticket commercial real estate
Impaired Financing Receivable:
With an Allowance	7		7		4
Without an Allowance	0		0		0
Total Recorded Investment	7		7		4
Related Allowance	0		0		0
Net Recorded Investment	7		7		4
Unpaid Principal Balance	9		9		$ 4
Average Recorded Investment	8	8	7	8
Interest Income Recognized	$ 0	$ 0	$ 0	$ 0

Loans - TDR Disclosures in Prog

Loans - TDR Disclosures in Progress Financial Impact of Modification (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable, Modifications [Line Items]
Total Loans Modified	$ 468	$ 507	$ 1,199	$ 1,221
Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Total Loans Modified	148	123	415	316
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Total Loans Modified	114	113	270	308
Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Modifications [Line Items]
Total Loans Modified	104	91	240	254
Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Modifications [Line Items]
Total Loans Modified	3	13	17	38
Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Modifications [Line Items]
Total Loans Modified	7	9	13	16
Commercial Banking
Financing Receivable, Modifications [Line Items]
Total Loans Modified	206	271	514	597
Commercial Banking | Total commercial lending
Financing Receivable, Modifications [Line Items]
Total Loans Modified	205	270	512	596
Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Modifications [Line Items]
Total Loans Modified	3	13	29	38
Commercial Banking | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Total Loans Modified	202	257	483	558
Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Modifications [Line Items]
Total Loans Modified	$ 1	$ 1	$ 2	$ 1
Reduced Interest Rate
Financing Receivable, Modifications [Line Items]
% of TDR Activity	50.00%	35.00%	51.00%	40.00%
Average Rate Reduction	11.91%	12.55%	13.04%	12.17%
Reduced Interest Rate | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	100.00%	100.00%	100.00%	100.00%
Average Rate Reduction	17.85%	16.69%	17.90%	17.18%
Reduced Interest Rate | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	33.00%	47.00%	44.00%	46.00%
Average Rate Reduction	3.88%	3.41%	3.77%	3.62%
Reduced Interest Rate | Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Modifications [Line Items]
% of TDR Activity	35.00%	47.00%	44.00%	45.00%
Average Rate Reduction	3.78%	3.52%	3.83%	3.75%
Reduced Interest Rate | Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Modifications [Line Items]
% of TDR Activity	19.00%	71.00%	49.00%	62.00%
Average Rate Reduction	1.35%	2.18%	2.44%	2.37%
Reduced Interest Rate | Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Modifications [Line Items]
% of TDR Activity	13.00%	11.00%	21.00%	23.00%
Average Rate Reduction	9.30%	10.44%	5.56%	7.90%
Reduced Interest Rate | Commercial Banking
Financing Receivable, Modifications [Line Items]
% of TDR Activity	24.00%	1.00%	15.00%	5.00%
Average Rate Reduction	0.24%	0.15%	0.79%	0.09%
Reduced Interest Rate | Commercial Banking | Total commercial lending
Financing Receivable, Modifications [Line Items]
% of TDR Activity	24.00%	1.00%	15.00%	5.00%
Average Rate Reduction	0.24%	0.15%	0.79%	0.09%
Reduced Interest Rate | Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	7.00%	0.00%
Average Rate Reduction	0.00%	0.00%	0.02%	0.00%
Reduced Interest Rate | Commercial Banking | Commercial and industrial
Financing Receivable, Modifications [Line Items]
% of TDR Activity	24.00%	1.00%	15.00%	6.00%
Average Rate Reduction	0.24%	0.15%	0.81%	0.09%
Reduced Interest Rate | Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Average Rate Reduction	0.00%	0.00%	0.00%	0.00%
Term Extension
Financing Receivable, Modifications [Line Items]
% of TDR Activity	66.00%	42.00%	45.00%	46.00%
Average Term Extension (Months)	15 months	21 months	18 months	26 months
Term Extension | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Average Term Extension (Months)	0 months	0 months	0 months	0 months
Term Extension | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	97.00%	75.00%	94.00%	75.00%
Average Term Extension (Months)	9 months	38 months	18 months	41 months
Term Extension | Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Modifications [Line Items]
% of TDR Activity	99.00%	75.00%	96.00%	74.00%
Average Term Extension (Months)	5 months	8 months	6 months	7 months
Term Extension | Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Modifications [Line Items]
% of TDR Activity	53.00%	90.00%	79.00%	86.00%
Average Term Extension (Months)	292 months	241 months	234 months	247 months
Term Extension | Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Modifications [Line Items]
% of TDR Activity	82.00%	61.00%	73.00%	65.00%
Average Term Extension (Months)	10 months	9 months	10 months	9 months
Term Extension | Commercial Banking
Financing Receivable, Modifications [Line Items]
% of TDR Activity	96.00%	47.00%	57.00%	55.00%
Average Term Extension (Months)	18 months	10 months	18 months	16 months
Term Extension | Commercial Banking | Total commercial lending
Financing Receivable, Modifications [Line Items]
% of TDR Activity	96.00%	47.00%	57.00%	55.00%
Average Term Extension (Months)	18 months	10 months	18 months	16 months
Term Extension | Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Modifications [Line Items]
% of TDR Activity	100.00%	0.00%	26.00%	67.00%
Average Term Extension (Months)	6 months	0 months	5 months	6 months
Term Extension | Commercial Banking | Commercial and industrial
Financing Receivable, Modifications [Line Items]
% of TDR Activity	96.00%	49.00%	59.00%	54.00%
Average Term Extension (Months)	18 months	10 months	18 months	17 months
Term Extension | Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Modifications [Line Items]
% of TDR Activity	12.00%	0.00%	5.00%	0.00%
Average Term Extension (Months)	0 months	0 months	0 months	0 months
Balance Reduction
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	17.00%	0.00%	11.00%
Gross Balance Reduction	$ 0	$ 50	$ 7	$ 87
Balance Reduction | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Gross Balance Reduction	$ 0	$ 0	$ 0	$ 0
Balance Reduction | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	20.00%	3.00%	22.00%
Gross Balance Reduction	$ 0	$ 21	$ 7	$ 58
Balance Reduction | Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	24.00%	3.00%	25.00%
Gross Balance Reduction	$ 0	$ 21	$ 7	$ 57
Balance Reduction | Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	2.00%	2.00%	2.00%
Gross Balance Reduction	$ 0	$ 0	$ 0	$ 0
Balance Reduction | Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	11.00%
Gross Balance Reduction	$ 0	$ 0	$ 0	$ 1
Balance Reduction | Commercial Banking
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	23.00%	0.00%	10.00%
Gross Balance Reduction	$ 0	$ 29	$ 0	$ 29
Balance Reduction | Commercial Banking | Total commercial lending
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	23.00%	0.00%	10.00%
Gross Balance Reduction	$ 0	$ 29	$ 0	$ 29
Balance Reduction | Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	97.00%	0.00%	32.00%
Gross Balance Reduction	$ 0	$ 3	$ 0	$ 3
Balance Reduction | Commercial Banking | Commercial and industrial
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	19.00%	0.00%	9.00%
Gross Balance Reduction	$ 0	$ 26	$ 0	$ 26
Balance Reduction | Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Gross Balance Reduction	$ 0	$ 0	$ 0	$ 0
Geographic Distribution, Domestic [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Total Loans Modified	$ 107	$ 88	$ 291	$ 212
Geographic Distribution, Domestic [Member] | Reduced Interest Rate | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	100.00%	100.00%	100.00%	100.00%
Average Rate Reduction	14.51%	13.12%	14.25%	12.95%
Geographic Distribution, Domestic [Member] | Term Extension | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Average Term Extension (Months)	0 months	0 months	0 months	0 months
Geographic Distribution, Domestic [Member] | Balance Reduction | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Gross Balance Reduction	$ 0	$ 0	$ 0	$ 0
Geographic Distribution, Foreign [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Total Loans Modified	$ 41	$ 35	$ 124	$ 104
Geographic Distribution, Foreign [Member] | Reduced Interest Rate | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	100.00%	100.00%	100.00%	100.00%
Average Rate Reduction	26.71%	25.91%	26.46%	25.86%
Geographic Distribution, Foreign [Member] | Term Extension | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Average Term Extension (Months)	0 months	0 months	0 months	0 months
Geographic Distribution, Foreign [Member] | Balance Reduction | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
% of TDR Activity	0.00%	0.00%	0.00%	0.00%
Gross Balance Reduction	$ 0	$ 0	$ 0	$ 0

Loans - TDR - Subsequent Defaul

Loans - TDR - Subsequent Defaults of Completed TDR Modifications (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)Contract	Sep. 30, 2016USD ($)Contract	Sep. 30, 2017USD ($)Contract	Sep. 30, 2016USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	28,986	21,957	84,987	65,550
Total Loans | $	$ 182	$ 175	$ 449	$ 336
Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	26,543	19,808	77,756	59,418
Total Loans | $	$ 52	$ 35	$ 146	$ 110
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	2,302	2,125	7,053	6,086
Total Loans | $	$ 27	$ 30	$ 91	$ 79
Consumer Portfolio Segment [Member] | Auto
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	2,288	2,096	7,000	6,009
Total Loans | $	$ 26	$ 24	$ 81	$ 67
Consumer Portfolio Segment [Member] | Home loan
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	5	17	24	40
Total Loans | $	$ 0	$ 2	$ 6	$ 5
Consumer Portfolio Segment [Member] | Retail banking
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	9	12	29	37
Total Loans | $	$ 1	$ 4	$ 4	$ 7
Commercial Banking
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	141	24	178	46
Total Loans | $	$ 103	$ 110	$ 212	$ 147
Commercial Banking | Total commercial lending
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	141	23	176	43
Total Loans | $	$ 103	$ 110	$ 211	$ 147
Commercial Banking | Commercial and multifamily real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	1	0	1
Total Loans | $	$ 0	$ 2	$ 0	$ 2
Commercial Banking | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	141	22	176	42
Total Loans | $	$ 103	$ 108	$ 211	$ 145
Commercial Banking | Small-ticket commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	1	2	3
Total Loans | $	$ 0	$ 0	$ 1	$ 0
Geographic Distribution, Domestic [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	13,528	9,138	39,555	29,963
Total Loans | $	$ 28	$ 15	$ 79	$ 49
Geographic Distribution, Foreign [Member] | Credit Card Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	13,015	10,670	38,201	29,455
Total Loans | $	$ 24	$ 20	$ 67	$ 61

Loans - Outstanding Balance and

Loans - Outstanding Balance and Carrying Value of Acquired Loans (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Outstanding balance	$ 13,255		$ 16,506
Carrying value	11,981		15,074
Impaired Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Outstanding balance	2,827		3,272
Carrying value	1,966		2,263
Non-Impaired Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Outstanding balance	10,428		13,234
Carrying value	10,015		12,811
Receivables Acquired with Deteriorated Credit Quality [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Allowance for Credit Losses	38		$ 31
Provision for credit losses for Acquired Loans	$ 7	$ 9

Loans - Changes in Accretable Y

Loans - Changes in Accretable Yield on Acquired Loans (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield, beginning balance	$ 2,691	$ 3,177
Accretion recognized in earnings	(144)	(465)
Reclassifications from/(to) nonaccretable differences	2	10
Changes in accretable yield for non-credit related changes in expected cash flows	(124)	(297)
Accretable yield, ending balance	2,425	2,425
Impaired Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield, beginning balance	992	1,064
Accretion recognized in earnings	(54)	(164)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference	0	(10)
Changes in accretable yield for non-credit related changes in expected cash flows	(32)	16
Accretable yield, ending balance	906	906
Non-Impaired Loans
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield, beginning balance	1,699	2,113
Accretion recognized in earnings	(90)	(301)
Reclassifications from/(to) nonaccretable differences	2	20
Changes in accretable yield for non-credit related changes in expected cash flows	(92)	(313)
Accretable yield, ending balance	$ 1,519	$ 1,519

Allowance for Loan and Lease 65

Allowance for Loan and Lease Losses - Summary of Changes in Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period			$ 6,503
Balance at end of the period	$ 7,418		7,418
Total Allowance
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	7,170	$ 5,881	6,503	$ 5,130
Charge-offs	(2,110)	(1,606)	(6,203)	(4,696)
Recoveries	504	366	1,469	1,123
Net charge-offs	(1,606)	(1,240)	(4,734)	(3,573)
Provision (benefit) for loan and lease losses	1,844	1,625	5,633	4,743
Allowance build (release) for loan and lease losses	238	385	899	1,170
Other changes	10	(8)	16	(42)
Balance at end of the period	7,418	6,258	7,418	6,258
Unfunded Lending Commitments Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	139	169	136	168
Provision (benefit) for loan and lease losses	(11)	(37)	(8)	(36)
Balance at end of the period	128	132	128	132
Combined Allowance & Unfunded Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance at end of the period	7,546	6,390	7,546	6,390
Credit Card Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	5,210	4,086	4,606	3,654
Charge-offs	(1,471)	(1,171)	(4,644)	(3,608)
Recoveries	316	265	962	803
Net charge-offs	(1,155)	(906)	(3,682)	(2,805)
Provision (benefit) for loan and lease losses	1,466	1,272	4,580	3,604
Allowance build (release) for loan and lease losses	311	366	898	799
Other changes	13	(7)	30	(8)
Balance at end of the period	5,534	4,445	5,534	4,445
Credit Card Portfolio Segment [Member] | Unfunded Lending Commitments Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	0	0	0	0
Provision (benefit) for loan and lease losses	0	0	0	0
Balance at end of the period	0	0	0	0
Credit Card Portfolio Segment [Member] | Combined Allowance & Unfunded Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance at end of the period	5,534	4,445	5,534	4,445
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	1,199	972	1,102	868
Charge-offs	(435)	(323)	(1,189)	(862)
Recoveries	159	96	463	306
Net charge-offs	(276)	(227)	(726)	(556)
Provision (benefit) for loan and lease losses	292	258	839	691
Allowance build (release) for loan and lease losses	16	31	113	135
Other changes	(2)	0	(2)	0
Balance at end of the period	1,213	1,003	1,213	1,003
Consumer Portfolio Segment [Member] | Unfunded Lending Commitments Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	7	8	7	7
Provision (benefit) for loan and lease losses	1	(2)	1	(1)
Balance at end of the period	8	6	8	6
Consumer Portfolio Segment [Member] | Combined Allowance & Unfunded Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance at end of the period	1,221	1,009	1,221	1,009
Commercial Banking
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	758	821	793	604
Charge-offs	(168)	(112)	(334)	(224)
Recoveries	5	4	12	10
Net charge-offs	(163)	(108)	(322)	(214)
Provision (benefit) for loan and lease losses	75	96	210	452
Allowance build (release) for loan and lease losses	(88)	(12)	(112)	238
Other changes	(1)	(1)	(12)	(34)
Balance at end of the period	669	808	669	808
Commercial Banking | Unfunded Lending Commitments Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	132	161	129	161
Provision (benefit) for loan and lease losses	(12)	(35)	(9)	(35)
Balance at end of the period	120	126	120	126
Commercial Banking | Combined Allowance & Unfunded Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance at end of the period	789	934	789	934
Other
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	3	2	2	4
Charge-offs	(36)	0	(36)	(2)
Recoveries	24	1	32	4
Net charge-offs	(12)	1	(4)	2
Provision (benefit) for loan and lease losses	11	(1)	4	(4)
Allowance build (release) for loan and lease losses	(1)	0	0	(2)
Other changes	0	0	0	0
Balance at end of the period	2	2	2	2
Other | Unfunded Lending Commitments Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance as beginning of the period	0	0	0	0
Provision (benefit) for loan and lease losses	0	0	0	0
Balance at end of the period	0	0	0	0
Other | Combined Allowance & Unfunded Reserve
Allowance for Loan and Lease Losses [Roll Forward]
Balance at end of the period	$ 2	$ 2	$ 2	$ 2

Allowance for Loan and Lease 66

Allowance for Loan and Lease Losses - Components of Allowance for Loan and Lease Losses by Impairment Methodology (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Allowance for loan and lease losses by impairment methodology:
Collectively evaluated	$ 6,948		$ 6,007
Asset-specific	432		465
Total allowance for loan and lease losses	7,418		6,503
Loans held for investment by impairment methodology:
Collectively evaluated	237,665		227,555
Asset-specific	2,772		2,960
Loans held for investment	$ 252,422		$ 245,586	$ 238,019
Allowance as a percentage of period-end loans held for investment	2.94%		2.65%
Credit Card Portfolio Segment [Member]
Allowance for loan and lease losses by impairment methodology:
Collectively evaluated	$ 5,246		$ 4,367
Asset-specific	288		239
Total allowance for loan and lease losses	5,534	$ 5,210	4,606	4,445	$ 4,086	$ 3,654
Loans held for investment by impairment methodology:
Collectively evaluated	108,322		104,835
Asset-specific	777		715
Loans held for investment	$ 109,130		$ 105,552
Allowance as a percentage of period-end loans held for investment	5.07%		4.36%
Consumer Portfolio Segment [Member]
Allowance for loan and lease losses by impairment methodology:
Collectively evaluated	$ 1,125		$ 1,016
Asset-specific	55		57
Total allowance for loan and lease losses	1,213	1,199	1,102	1,003	972	868
Loans held for investment by impairment methodology:
Collectively evaluated	63,432		57,862
Asset-specific	681		736
Loans held for investment	$ 75,564		$ 73,054
Allowance as a percentage of period-end loans held for investment	1.61%		1.51%
Commercial Banking
Allowance for loan and lease losses by impairment methodology:
Collectively evaluated	$ 575		$ 622
Asset-specific	89		169
Total allowance for loan and lease losses	669	758	793	808	821	604
Loans held for investment by impairment methodology:
Collectively evaluated	65,853		64,794
Asset-specific	1,314		1,509
Loans held for investment	$ 67,670		$ 66,916
Allowance as a percentage of period-end loans held for investment	0.99%		1.19%
Other
Allowance for loan and lease losses by impairment methodology:
Collectively evaluated	$ 2		$ 2
Asset-specific	0		0
Total allowance for loan and lease losses	2	$ 3	2	$ 2	$ 2	$ 4
Loans held for investment by impairment methodology:
Collectively evaluated	58		64
Asset-specific	0		0
Loans held for investment	$ 58		$ 64
Allowance as a percentage of period-end loans held for investment	3.45%		3.13%
Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for loan and lease losses by impairment methodology:
Financing Receivable, Allowance for Credit Losses	$ 38		$ 31
Loans held for investment by impairment methodology:
Loans held for investment	11,985		15,071
Receivables Acquired with Deteriorated Credit Quality [Member] | Credit Card Portfolio Segment [Member]
Allowance for loan and lease losses by impairment methodology:
Financing Receivable, Allowance for Credit Losses	0		0
Loans held for investment by impairment methodology:
Loans held for investment	31		2
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member]
Allowance for loan and lease losses by impairment methodology:
Financing Receivable, Allowance for Credit Losses	33		29
Loans held for investment by impairment methodology:
Loans held for investment	11,451		14,456
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Banking
Allowance for loan and lease losses by impairment methodology:
Financing Receivable, Allowance for Credit Losses	5		2
Loans held for investment by impairment methodology:
Loans held for investment	503		613
Receivables Acquired with Deteriorated Credit Quality [Member] | Other
Allowance for loan and lease losses by impairment methodology:
Financing Receivable, Allowance for Credit Losses	0		0
Loans held for investment by impairment methodology:
Loans held for investment	$ 0		$ 0

Allowance for Loan and Lease 67

Allowance for Loan and Lease Losses Allowance for Loan and Lease Losses - Loss Sharing Arrangements (Details) - Loss Sharing Agreement [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Expected reimbursement from loss sharing partners	$ 332	$ 227	$ 332	$ 227	$ 263	$ 228	$ 219	$ 194
Impact to net charge-offs	(66)	(56)	(198)	(161)
Impact to provision for credit losses	$ 135	$ 64	$ 302	$ 194

Variable Interest Entities an68

Variable Interest Entities and Securitizations - Carrying Amount of Assets and Liabilities of Variable Interest Entities (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	$ 35,772	$ 34,651
Carrying Amount of Liabilities, Consolidated	17,800	19,798
Carrying Amount of Assets, Unconsolidated	4,729	4,250
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	1,405	1,120
Maximum exposure to loss	5,656	5,325
Affordable housing entities
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	221	174
Carrying Amount of Liabilities, Consolidated	18	9
Carrying Amount of Assets, Unconsolidated	4,237	3,862
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	1,316	1,093
Variable Interest Entities, nonconsolidated, Carrying amount of Assets included in certain investment structures	2,200	1,900
Variable Interest Entities, nonconsolidated, Carrying amount of liabilities included in certain investment structures	898	618
Maximum exposure to loss	4,237	3,862
Entities that provide capital to low-income and rural communities
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	1,321	927
Carrying Amount of Liabilities, Consolidated	128	127
Carrying Amount of Assets, Unconsolidated	0	0
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	0	0
Maximum exposure to loss	0	0
Other
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	0	0
Carrying Amount of Liabilities, Consolidated	0	0
Carrying Amount of Assets, Unconsolidated	314	187
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	0	0
Maximum exposure to loss	314	187
Total Other VIEs
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	1,542	1,101
Carrying Amount of Liabilities, Consolidated	146	136
Carrying Amount of Assets, Unconsolidated	4,551	4,049
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	1,316	1,093
Maximum exposure to loss	4,551	4,049
Gpm Mfh [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	8	8
Maximum exposure to loss	391
Credit card loan securitizations
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	34,230	33,550
Carrying Amount of Liabilities, Consolidated	17,654	19,662
Carrying Amount of Assets, Unconsolidated	0	0
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	0	0
Maximum exposure to loss	0	0
Home loan
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	0	0
Carrying Amount of Liabilities, Consolidated	0	0
Carrying Amount of Assets, Unconsolidated	178	201
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	89	27
Maximum exposure to loss	1,105	1,276
Total securitization-related VIEs
Variable Interest Entity [Line Items]
Carrying Amount of Assets, Consolidated	34,230	33,550
Carrying Amount of Liabilities, Consolidated	17,654	19,662
Carrying Amount of Assets, Unconsolidated	178	201
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	89	27
Maximum exposure to loss	$ 1,105	$ 1,276

Variable Interest Entities an69

Variable Interest Entities and Securitizations - External Debt and Receivable Balances of Securitization Programs (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity, Primary Beneficiary
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities held by third-party investors, non-mortgage	$ 17,087	$ 18,826
Receivables in the trust, non-mortgage	34,763	31,762
Cash balance of spread or reserve accounts, non-mortgage	0	0
Variable Interest Entity, Not Primary Beneficiary | Option- ARM
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities held by third-party investors, mortgage	1,288	1,499
Receivables in the trust, mortgage	1,331	1,549
Cash balance of spread or reserve accounts, mortgage	8	8
Variable Interest Entity, Not Primary Beneficiary | GreenPoint HELOCs
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities held by third-party investors, mortgage	44	56
Receivables in the trust, mortgage	38	50
Variable Interest Entity, Not Primary Beneficiary | GreenPoint Manufactured Housing
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Securities held by third-party investors, mortgage	599	697
Receivables in the trust, mortgage	603	702
Cash balance of spread or reserve accounts, mortgage	$ 121	$ 130

Variable Interest Entities an70

Variable Interest Entities and Securitizations - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Variable Interest Entity [Line Items]
Funded HELOCs advances	$ 30		$ 30
Unfunded commitment on residual interests on trusts	5		5
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	1,405		1,120
Amortization Method Qualified Affordable Housing Project Investments, Amortization	347	$ 295
Affordable Housing Tax Credits And Other Tax Benefits, Amount	388	$ 336
Amortization Method Qualified Affordable Housing Project Investments	4,000		3,800
Qualified Affordable Housing Project Investments, Commitment	1,500		1,200
Variable Interest Entity, Consolidated, Carrying Amount, Assets	35,772		34,651
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	4,729		4,250
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 5,656		5,325
Minimum
Variable Interest Entity [Line Items]
Affordable Housing Tax Credits Commitment, Year to be Paid	2,017
Maximum
Variable Interest Entity [Line Items]
Affordable Housing Tax Credits Commitment, Year to be Paid	2,019
Affordable housing entities
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	$ 1,316		1,093
Total assets of the unconsolidated VIE investment funds	10,400		11,500
Variable Interest Entity, Consolidated, Carrying Amount, Assets	221		174
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	4,237		3,862
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	4,237		3,862
Entities that provide capital to low-income and rural communities
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	0		0
Variable Interest Entity, Consolidated, Carrying Amount, Assets	1,321		927
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	0		0
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	0		0
Other
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	0		0
Variable Interest Entity, Consolidated, Carrying Amount, Assets	0		0
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	314		187
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	314		187
GreenPoint Manufactured Housing
Variable Interest Entity [Line Items]
Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Amount	11		12
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	8		8
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	391
Variable Interest Entity, Not Primary Beneficiary | Option- ARM
Variable Interest Entity [Line Items]
Continuing Involvement with Derecognized Transferred Financial Assets, Liabilities Incurred	1,288		1,499
Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding	1,331		1,549
Variable Interest Entity, Not Primary Beneficiary | GreenPoint HELOCs
Variable Interest Entity [Line Items]
Continuing Involvement with Derecognized Transferred Financial Assets, Liabilities Incurred	44		56
Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding	38		50
Variable Interest Entity, Not Primary Beneficiary | GreenPoint Manufactured Housing
Variable Interest Entity [Line Items]
Continuing Involvement with Derecognized Transferred Financial Assets, Liabilities Incurred	599		697
Continuing Involvement with Derecognized Transferred Financial Assets, Amount Outstanding	603		702
Letters of credit funded	76		$ 85
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 391

Goodwill and Intangible Asset71

Goodwill and Intangible Assets - Components (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Schedule of Intangible Assets by Major Class [Line Items]
Goodwill, Gross	$ 14,532	$ 14,519
Goodwill	14,532	14,519
Intangible Assets, Gross (Excluding Goodwill)	3,795	3,856
Accumulated Amortization	(3,314)	(3,191)
Intangible Assets, Net (Excluding Goodwill)	481	665
Intangible Assets Gross Including Goodwill	18,327	18,375
Total goodwill and other intangible assets, Net Carrying Value	15,013	15,184
Commercial MSRs, Gross	327	276
Commercial MSR, Accumulated Amortization	(112)	(82)
Consumer MSRs	90	80
Total MSRs, Gross	417	356
Servicing Asset at Amortized Cost	215	194
Total MSRs, Net	305	274
PCCR intangibles
Schedule of Intangible Assets by Major Class [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	2,105	2,151
Accumulated Amortization	(1,800)	(1,715)
Intangible Assets, Net (Excluding Goodwill)	305	436
Core deposit intangibles
Schedule of Intangible Assets by Major Class [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	1,391	1,391
Accumulated Amortization	(1,368)	(1,345)
Intangible Assets, Net (Excluding Goodwill)	23	46
Other Intangible Assets [Member]
Schedule of Intangible Assets by Major Class [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	299	314
Accumulated Amortization	(146)	(131)
Intangible Assets, Net (Excluding Goodwill)	$ 153	$ 183

Goodwill and Intangible Asset72

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2014	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Amortization of Intangible Assets	$ 61	$ 89	$ 184	$ 285
Impairment of Intangible Assets	0	0
Goodwill accumulated impairment	0		$ 0			$ 0
Goodwill iImpairment loss	$ 0	$ 0			$ 0

Goodwill and Intangible Asset73

Goodwill and Intangible Assets - Goodwill Attributable to Each Business Segments (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 14,519
Goodwill, Acquired During Period	6
Other adjustments	7
Goodwill, Ending Balance	14,532
Commercial Banking
Goodwill [Roll Forward]
Goodwill, Beginning Balance	4,901
Goodwill, Acquired During Period	0
Other adjustments	0
Goodwill, Ending Balance	4,901
Credit Card
Goodwill [Roll Forward]
Goodwill, Beginning Balance	5,018
Goodwill, Acquired During Period	6
Other adjustments	7
Goodwill, Ending Balance	5,031
Consumer Banking
Goodwill [Roll Forward]
Goodwill, Beginning Balance	4,600
Goodwill, Acquired During Period	0
Other adjustments	0
Goodwill, Ending Balance	$ 4,600

Deposits and Borrowings - Addit

Deposits and Borrowings - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Deposits And Borrowings [Line Items]
Interest-bearing deposits	$ 212,956		$ 211,266
Securitized debt obligations	17,087		18,826
Proceeds from Issuance of Secured Debt	2,991	$ 4,987
Maturities of secured debt	7,200
Senior and subordinated notes	28,420		23,431
Repayments of Unsecured Debt	2,800
Advances from Federal Home Loan Banks	13,100		17,200
Cabela [Member]
Deposits And Borrowings [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, securitized debt obligation	2,500
Other Assets
Deposits And Borrowings [Line Items]
Federal Home Loan Bank Stock and Federal Reserve Bank Stock	1,700		$ 1,900
Senior notes | Total unsecured senior debt
Deposits And Borrowings [Line Items]
Proceeds from issuance of unsecured debt	7,800
Senior notes | Floating unsecured senior debt
Deposits And Borrowings [Line Items]
Proceeds from issuance of unsecured debt	1,700
Senior notes | Fixed unsecured senior debt
Deposits And Borrowings [Line Items]
Proceeds from issuance of unsecured debt	$ 6,100

Deposits and Borrowings - Depos

Deposits and Borrowings - Deposits and Short-term Borrowings (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Deposits:
Non-interest-bearing deposits	$ 26,106	$ 25,502
Interest-bearing deposits	212,956	211,266
Total deposits	239,062	236,768	$ 225,981
Short-term Debt [Line Items]
Short-term borrowings	767	992
Federal funds purchased and securities loaned or sold under agreements to repurchase
Short-term Debt [Line Items]
Short-term borrowings	$ 767	$ 992

Deposits and Borrowings - Long-

Deposits and Borrowings - Long-Term Debt (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Securitized debt obligations	$ 17,087	$ 18,826
Long-term Debt and Capital Lease Obligations	58,691	59,468
Debt and Capital Lease Obligations	$ 59,458	60,460
Securitized debt obligations
Debt Instrument [Line Items]
Weighted average interest rate	1.77%
Long-term debt		18,826
Total senior and subordinated notes
Debt Instrument [Line Items]
Long-term debt	$ 28,420	23,431
Senior notes | Total unsecured senior debt
Debt Instrument [Line Items]
Weighted average interest rate	2.63%
Long-term debt	$ 23,862	18,899
Senior notes | Fixed unsecured senior debt
Debt Instrument [Line Items]
Weighted average interest rate	2.69%
Long-term debt	$ 20,815	17,546
Senior notes | Floating unsecured senior debt
Debt Instrument [Line Items]
Weighted average interest rate	2.19%
Long-term debt	$ 3,047	1,353
Subordinated notes | Fixed unsecured subordinated debt
Debt Instrument [Line Items]
Weighted average interest rate	4.09%
Long-term debt	$ 4,558	4,532
FHLB advances
Debt Instrument [Line Items]
Weighted average interest rate	1.23%
Long-term debt		17,179
Capital Lease Obligations
Debt Instrument [Line Items]
Weighted average interest rate	5.75%
Long-term debt	$ 48	32
FHLB Advance and Capital Lease Obligation
Debt Instrument [Line Items]
Long-term debt	$ 13,184	$ 17,211
Minimum [Member] | Securitized debt obligations
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.33%
Minimum [Member] | Senior notes | Fixed unsecured senior debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.50%
Minimum [Member] | Senior notes | Floating unsecured senior debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.99%
Minimum [Member] | Subordinated notes | Fixed unsecured subordinated debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.38%
Minimum [Member] | FHLB advances
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.21%
Minimum [Member] | Capital Lease Obligations
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.50%
Maximum [Member] | Securitized debt obligations
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.75%
Maximum [Member] | Senior notes | Fixed unsecured senior debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Maximum [Member] | Senior notes | Floating unsecured senior debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.46%
Maximum [Member] | Subordinated notes | Fixed unsecured subordinated debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.80%
Maximum [Member] | FHLB advances
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.43%
Maximum [Member] | Capital Lease Obligations
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	12.86%

Deposits and Borrowings - Sched

Deposits and Borrowings - Schedule of Components of Interest Expense on Short-Term Borrowings and Long-Term Debt (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Short-term borrowings:
Federal funds purchased and securities loaned or sold under agreements to repurchase	$ 1	$ 0	$ 3	$ 2
Total short-term borrowings	1	0	3	2
Long-term debt:
Securitized debt obligations	85	56	236	151
Senior and subordinated notes	194	121	522	338
Other long-term borrowings	30	34	65	84
Total long-term debt	309	211	823	573
Total interest expense	$ 310	$ 211	$ 826	$ 575

Derivative Instruments and He78

Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Decrease in derivative assets due to CME Rulebook change	$ 23
Cumulative counterparty credit risk valuation adjustment	4	$ 6
Cumulative credit risk valuation adjustment related to our credit quality (less than $1 million)	1	$ 1
Gain (net after-tax) recorded in AOCI related to derivatives designated as cash flow hedges expected to be reclassified to earnings over the next 12 months	$ 35
Maximum length of time over which forecasted transactions were hedged, years	6 years
Decrease in derivative liabilities due to CME Rulebook change	$ 500

Derivative Instruments and He79

Derivative Instruments and Hedging Activities - Notional and Fair Values of Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Cumulative counterparty credit risk valuation adjustment	$ 4	$ 6
Notional or Contractual Amount	179,519	142,938
Derivative Assets, Gross Amount	745	1,494
Derivative Liabilities, Gross Amount	1,031	1,438
Derivative Asset, Netting Adjustment	(236)	(539)
Derivative Liability, Netting Adjustment	(598)	(336)
Derivative Assets	509	955
Derivative Liability	433	1,102
Cumulative credit risk valuation adjustment related to our credit quality (less than $1 million	1	1
Decrease in derivative assets due to CME Rulebook change	23
Decrease in derivative liabilities due to CME Rulebook change	500
Derivatives designated as accounting hedges
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	126,027	98,896
Derivative Assets, Gross Amount	118	717
Derivative Liabilities, Gross Amount	575	865
Derivatives designated as accounting hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	117,345	90,880
Derivative Assets, Gross Amount	108	446
Derivative Liabilities, Gross Amount	175	856
Derivatives designated as accounting hedges | Interest rate contracts | Fair value hedges
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	51,645	40,480
Derivative Assets, Gross Amount	78	295
Derivative Liabilities, Gross Amount	79	569
Derivatives designated as accounting hedges | Interest rate contracts | Cash flow hedges
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	65,700	50,400
Derivative Assets, Gross Amount	30	151
Derivative Liabilities, Gross Amount	96	287
Derivatives designated as accounting hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	8,682	8,016
Derivative Assets, Gross Amount	10	271
Derivative Liabilities, Gross Amount	400	9
Derivatives designated as accounting hedges | Foreign exchange contracts | Cash flow hedges
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	5,833	5,620
Derivative Assets, Gross Amount	10	108
Derivative Liabilities, Gross Amount	228	9
Derivatives designated as accounting hedges | Foreign exchange contracts | Net investment hedges
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	2,849	2,396
Derivative Assets, Gross Amount	0	163
Derivative Liabilities, Gross Amount	172	0
Derivatives not designated as accounting hedges
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	53,492	44,042
Derivative Assets, Gross Amount	627	777
Derivative Liabilities, Gross Amount	456	573
Derivatives not designated as accounting hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	52,439	42,275
Derivative Assets, Gross Amount	627	720
Derivative Liabilities, Gross Amount	451	559
Derivatives not designated as accounting hedges | Interest rate contracts | MSRs
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	1,639	1,696
Derivative Assets, Gross Amount	8	17
Derivative Liabilities, Gross Amount	4	21
Derivatives not designated as accounting hedges | Interest rate contracts | Customer accommodation
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	45,886	39,474
Derivative Assets, Gross Amount	570	670
Derivative Liabilities, Gross Amount	435	530
Derivatives not designated as accounting hedges | Interest rate contracts | Other interest rate exposures
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	4,914	1,105
Derivative Assets, Gross Amount	49	33
Derivative Liabilities, Gross Amount	12	8
Derivatives not designated as accounting hedges | Other contracts
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	1,053	1,767
Derivative Assets, Gross Amount	0	57
Derivative Liabilities, Gross Amount	$ 5	$ 14

Derivative Instruments and He80

Derivative Instruments and Hedging Activities - Offsetting Assets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Collateral, Obligation to Return Cash	$ 51	$ 448
Derivatives assets(1)(2)
Gross Amounts	745	1,494
Derivative Asset, Offsetting Financial Instruments	(187)	(152)
Derivative Assets, Offsetting Cash Collateral	(49)	(387)
Derivative Assets	509	955
Derivative Asset, Securities Not Netted	0	(11)
Net Exposure	509	944
Derivative, Collateral, Obligation to Return Securities	1	16
Derivative, Collateral, Right to Reclaim Cash	$ 914	$ 1,500

Derivative Instruments and He81

Derivative Instruments and Hedging Activities - Offsetting Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivatives liabilities(1)(2)
Derivative Liabilities, Gross Amount	$ 1,031	$ 1,438
Derivative Liability, Offsetting Financial Instruments	(187)	(152)
Derivative Liability, Offsetting Cash Collateral	(411)	(184)
Derivative Liability	433	1,102
Derivative Liability, Securities Collateral Not Netted	0	0
Net Exposure	433	1,102
Repurchase agreements(3)
Gross Amounts	767	992
Securities Sold under Agreements to Repurchase, Asset	0	0
Repurchase Agreement, Collateral, Right To Reclaim Cash, Offset	0	0
Net Amounts as Recognized	767	992
Offsetting Amounts Not Netted, Collateral Pledged	(767)	(992)
Net Exposure	0	0
Securities Sold under Agreements to Repurchase, Fair Value of Collateral	782
Derivative, Collateral, Obligation to Return Cash	51	448
Derivative, Collateral, Obligation to Return Securities	1	16
Derivative, Collateral, Right to Reclaim Cash	$ 914	$ 1,500

Derivative Instruments and He82

Derivative Instruments and Hedging Activities - Net Gains (Losses) Recognized in Earnings Related to Derivatives in Fair Value Hedging Relationships and Free-Standing Derivatives (Details) - Other Non-Interest Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains recognized in earnings	$ 32	$ 40	$ 72	$ 115
Derivatives designated as accounting hedges | Fair value hedges | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings on derivatives	(23)	(219)	70	171
Gains (losses) recognized in earnings on hedged items	19	220	(74)	(147)
Net fair value hedge ineffectiveness gains (losses)	(4)	1	(4)	24
Derivatives not designated as accounting hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives not designated as accounting hedges	36	39	76	91
Derivatives not designated as accounting hedges | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives not designated as accounting hedges	36	39	76	100
Derivatives not designated as accounting hedges | Interest rate contracts | MSRs
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives not designated as accounting hedges	1	3	4	21
Derivatives not designated as accounting hedges | Interest rate contracts | Customer accommodation
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives not designated as accounting hedges	11	10	27	22
Derivatives not designated as accounting hedges | Interest rate contracts | Other interest rate exposures
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives not designated as accounting hedges	24	26	45	57
Derivatives not designated as accounting hedges | Other contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives not designated as accounting hedges	$ 0	$ 0	$ 0	$ (9)

Derivative Instruments and He83

Derivative Instruments and Hedging Activities - Net Gains (Losses) Related to Derivatives Designated as Cash Flow Hedges and Net Investment Hedges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recorded in AOCI	$ (46)	$ (54)	$ (78)	$ 727
Other Non-Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains recognized in earnings	32	40	72	115
Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recorded in AOCI	3	(93)	51	525
Gains (losses) reclassified from AOCI into earnings	20	49	89	147
Net derivative gains recognized in earnings	20	49	92	150
Cash flow hedges | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recorded in AOCI	(2)	(94)	37	524
Cash flow hedges | Interest rate contracts | Interest Income (Expense)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from AOCI into earnings	15	48	76	146
Cash flow hedges | Interest rate contracts | Other Non-Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings due to ineffectiveness	0	0	3	3
Cash flow hedges | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recorded in AOCI	5	1	14	1
Cash flow hedges | Foreign exchange contracts | Other Non-Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from AOCI into earnings	5	1	13	1
Net investment hedges | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recorded in AOCI	$ (49)	$ 39	$ (129)	$ 202

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Preferred Stock (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)$ / sharesshares	Dec. 31, 2016USD ($)
Class of Stock [Line Items]
Depository Share, Percent Interest in Preferred Stock	0.025
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 4,360	$ 4,360
Series B Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.00%
Redemption Price per Depositary Share (in dollars per share) | $ / shares	$ 1,000
Number of Depositary Shares (in shares) | shares	875,000
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 853	853
Series C Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.25%
Redemption Price per Depositary Share (in dollars per share) | $ / shares	$ 1,000
Number of Depositary Shares (in shares) | shares	500,000
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 484	484
Series D Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.70%
Redemption Price per Depositary Share (in dollars per share) | $ / shares	$ 1,000
Number of Depositary Shares (in shares) | shares	500,000
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 485	485
Series E Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	5.55%
Redemption Price per Depositary Share (in dollars per share) | $ / shares	$ 1,000
Number of Depositary Shares (in shares) | shares	1,000,000
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 988	988
Preferred Stock, Dividend Payment Rate, Variable	Libor + 380 bps
Preferred Stock Dividend Rate, Variable	3.80%
Series F Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.20%
Redemption Price per Depositary Share (in dollars per share) | $ / shares	$ 1,000
Number of Depositary Shares (in shares) | shares	500,000
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 484	484
Series G Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	5.20%
Redemption Price per Depositary Share (in dollars per share) | $ / shares	$ 1,000
Number of Depositary Shares (in shares) | shares	600,000
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 583	583
Series H Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.00%
Redemption Price per Depositary Share (in dollars per share) | $ / shares	$ 1,000
Number of Depositary Shares (in shares) | shares	500,000
Preferred Stock, Including Additional Paid in Capital, Net of Discount	$ 483	$ 483

Stockholders' Equity - Change i

Stockholders' Equity - Change in AOCI Gain (Loss) by Component (Net of Tax) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
AOCI beginning balance	$ (683)	$ 241	$ (949)	$ (616)
Other comprehensive income (loss) before reclassifications	98	(98)	388	805
Net realized (gains) losses reclassified from AOCI into earnings	(37)	(22)	(61)	(68)
Other comprehensive income (loss), net of tax	61	(120)	327	737
AOCI ending balance	(622)	121	(622)	121
Accumulated Net Unrealized Investment Gain (Loss) | Available-for-sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
AOCI beginning balance	181	485	(4)	162
Other comprehensive income (loss) before reclassifications	52	10	235	329
Net realized (gains) losses reclassified from AOCI into earnings	(42)	0	(40)	4
Other comprehensive income (loss), net of tax	10	10	195	333
AOCI ending balance	191	495	191	495
Accumulated Net Unrealized Investment Gain (Loss) | Securities Held to Maturity
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
AOCI beginning balance	(575)	(679)	(621)	(725)
Other comprehensive income (loss) before reclassifications	0	(1)	0	(1)
Net realized (gains) losses reclassified from AOCI into earnings	26	29	72	75
Other comprehensive income (loss), net of tax	26	28	72	74
AOCI ending balance	(549)	(651)	(549)	(651)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
AOCI beginning balance	(99)	640	(78)	120
Other comprehensive income (loss) before reclassifications	3	(93)	51	525
Net realized (gains) losses reclassified from AOCI into earnings	(20)	(49)	(89)	(147)
Other comprehensive income (loss), net of tax	(17)	(142)	(38)	378
AOCI ending balance	(116)	498	(116)	498
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
AOCI beginning balance	(174)	(172)	(222)	(143)
Other comprehensive income (loss) before reclassifications	38	(20)	86	(49)
Net realized (gains) losses reclassified from AOCI into earnings	0	0	0	0
Other comprehensive income (loss), net of tax	38	(20)	86	(49)
AOCI ending balance	(136)	(192)	(136)	(192)
Other
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
AOCI beginning balance	(16)	(33)	(24)	(30)
Other comprehensive income (loss) before reclassifications	5	6	16	1
Net realized (gains) losses reclassified from AOCI into earnings	(1)	(2)	(4)	0
Other comprehensive income (loss), net of tax	4	4	12	1
AOCI ending balance	$ (12)	$ (29)	$ (12)	$ (29)

Stockholders' Equity - Reclassi

Stockholders' Equity - Reclassifications from AOCI (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	$ 5,700	$ 5,277	$ 16,647	$ 15,426
Non-interest income	141	163	402	455
Income from continuing operations before income taxes	1,585	1,512	4,184	4,349
Income tax provision (benefit)	448	496	1,205	1,372
Net income	1,107	1,005	2,953	2,960
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	37	22	61	68
Accumulated Net Unrealized Investment Gain (Loss) | Reclassification out of Accumulated Other Comprehensive Income [Member] | Available-for-sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest income	68	1	64	(6)
Income tax provision (benefit)	26	1	24	(2)
Net income	42	0	40	(4)
Accumulated Net Unrealized Investment Gain (Loss) | Reclassification out of Accumulated Other Comprehensive Income [Member] | Securities Held to Maturity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	(40)	(46)	(113)	(119)
Income tax provision (benefit)	(14)	(17)	(41)	(44)
Net income	(26)	(29)	(72)	(75)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes	32	78	142	234
Income tax provision (benefit)	12	29	53	87
Net income	20	49	89	147
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest rate contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	25	77	122	234
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income	6	1	19	1
Non-interest income	1	0	1	(1)
Other | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes	3	2	7	0
Income tax provision (benefit)	2	0	3	0
Net income	$ 1	$ 2	$ 4	$ 0

Stockholders' Equity - Componen

Stockholders' Equity - Components of Other Comprehensive Income Loss and Related Tax Impact (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Before Tax
Net unrealized gains (losses) on securities available for sale	$ 16	$ 17	$ 299	$ 525
Net changes in securities held to maturity	40	44	113	118
Net unrealized gains (losses) on cash flow hedges	(29)	(226)	(61)	601
Foreign currency translation adjustments	11	4	12	70
Other	7	6	19	1
Other comprehensive income before taxes	45	(155)	382	1,315
Provision (Benefit)
Net unrealized gains on securities available for sale	6	7	104	192
Net changes in securities held to maturity	14	16	41	44
Net unrealized gains (losses) on cash flow hedges	(12)	(84)	(23)	223
Foreign currency translation adjustments	(27)	24	(74)	119
Other	3	2	7	0
Other comprehensive income (loss), provision (benefit)	(16)	(35)	55	578
After Tax
Net unrealized gains on securities available for sale	10	10	195	333
Net changes in securities held to maturity	26	28	72	74
Net unrealized gains (losses) on cash flow hedges	(17)	(142)	(38)	378
Foreign currency translation adjustments	38	(20)	86	(49)
Other	4	4	12	1
Other comprehensive income (loss), net of tax	$ 61	$ (120)	$ 327	$ 737

Earnings Per Common Share - Sch

Earnings Per Common Share - Schedule of Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Income from continuing operations, net of tax	$ 1,137	$ 1,016	$ 2,979	$ 2,977
Income (loss) from discontinued operations, net of tax	(30)	(11)	(26)	(17)
Net income	1,107	1,005	2,953	2,960
Dividends and undistributed earnings allocated to participating securities	(8)	(6)	(21)	(18)
Preferred stock dividends	(52)	(37)	(185)	(139)
Net income available to common stockholders	$ 1,047	$ 962	$ 2,747	$ 2,803
Total weighted-average basic shares outstanding	484.9	501.1	483.7	512
Effect of dilutive securities:
Stock options	2.2	1.9	2.5	1.9
Other contingently issuable shares	1.2	1.3	1.2	1.3
Warrants	0.7	1.6	0.7	1.6
Total effect of dilutive securities	4.1	4.8	4.4	4.8
Total weighted-average diluted shares outstanding	489	505.9	488.1	516.8
Basic earnings per common share:
Net income from continuing operations (in dollars per share)	$ 2.22	$ 1.94	$ 5.73	$ 5.50
Income (loss) from discontinued operations (in dollars per share)	(0.06)	(0.02)	(0.05)	(0.03)
Net income per basic common share (in dollars per share)	2.16	1.92	5.68	5.47
Diluted earnings per common share:
Net income from continuing operations (in dollars per share)	2.20	1.92	5.68	5.45
Income (loss) from discontinued operations (in dollars per share)	(0.06)	(0.02)	(0.05)	(0.03)
Net income per diluted common share (in dollars per share)	$ 2.14	$ 1.90	$ 5.63	$ 5.42

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Detail) - $ / shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive options excluded from the computation of diluted earnings per share (in shares)	0.3	2	0.3	2.3
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit	$ 82.08	$ 63.73	$ 82.08	$ 63.73
Maximum exercise price range	$ 86.34	$ 82.08	$ 86.34	$ 88.81
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Class of Warrant or Right, Outstanding	1.4	4.1	1.4	4.1

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Securities available for sale:
Securities available for sale	$ 39,742	$ 40,737
Other assets:
Derivative Assets, Gross Amount	745	1,494
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	(236)	(539)
Consumer MSRs	90	80
Liabilities:
Derivative Liabilities, Gross Amount	1,031	1,438
Derivative Asset	509	955
Derivative Liabilities	433	1,102
Derivative Credit Risk Valuation Adjustment, Derivative Assets (Liabilities)	3	5
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	(598)	(336)
Fair Value, Measurements, Recurring [Member]
Securities available for sale:
Securities available for sale	39,742	40,737
Other assets:
Derivative Assets, Gross Amount	509	955
Other Assets Fair Value, Amount	535	500
Total assets	40,786	42,192
Liabilities:
Derivative Liabilities, Gross Amount	433	1,102
Total liabilities	433	1,102
Fair Value, Measurements, Recurring [Member] | Level 1
Securities available for sale:
Securities available for sale	5,431	5,360
Other assets:
Derivative Assets, Gross Amount	1	7
Other Assets Fair Value, Amount	267	219
Deferred Compensation Plan Assets	267	219
Total assets	5,699	5,586
Liabilities:
Derivative Liabilities, Gross Amount	3	12
Total liabilities	3	12
Fair Value, Measurements, Recurring [Member] | Level 2
Securities available for sale:
Securities available for sale	33,716	34,799
Other assets:
Derivative Assets, Gross Amount	687	1,440
Other Assets Fair Value, Amount	0	0
Total assets	34,403	36,239
Liabilities:
Derivative Liabilities, Gross Amount	998	1,397
Total liabilities	998	1,397
Fair Value, Measurements, Recurring [Member] | Level 3
Securities available for sale:
Securities available for sale	595	578
Other assets:
Derivative Assets, Gross Amount	57	47
Other Assets Fair Value, Amount	268	281
Consumer MSRs	90	80
Retained interests in securitizations	178	201
Total assets	920	906
Liabilities:
Derivative Liabilities, Gross Amount	30	29
Total liabilities	30	29
US Treasury securities | Fair Value, Measurements, Recurring [Member]
Securities available for sale:
Securities available for sale	5,139	5,065
US Treasury securities | Fair Value, Measurements, Recurring [Member] | Level 1
Securities available for sale:
Securities available for sale	5,139	5,065
US Treasury securities | Fair Value, Measurements, Recurring [Member] | Level 2
Securities available for sale:
Securities available for sale	0	0
US Treasury securities | Fair Value, Measurements, Recurring [Member] | Level 3
Securities available for sale:
Securities available for sale	0	0
RMBS | Fair Value, Measurements, Recurring [Member]
Securities available for sale:
Securities available for sale	28,238	29,249
RMBS | Fair Value, Measurements, Recurring [Member] | Level 1
Securities available for sale:
Securities available for sale	0	0
RMBS | Fair Value, Measurements, Recurring [Member] | Level 2
Securities available for sale:
Securities available for sale	27,718	28,731
RMBS | Fair Value, Measurements, Recurring [Member] | Level 3
Securities available for sale:
Securities available for sale	520	518
CMBS | Fair Value, Measurements, Recurring [Member]
Securities available for sale:
Securities available for sale	4,829	4,988
CMBS | Fair Value, Measurements, Recurring [Member] | Level 1
Securities available for sale:
Securities available for sale	0	0
CMBS | Fair Value, Measurements, Recurring [Member] | Level 2
Securities available for sale:
Securities available for sale	4,763	4,937
CMBS | Fair Value, Measurements, Recurring [Member] | Level 3
Securities available for sale:
Securities available for sale	66	51
Other ABS | Fair Value, Measurements, Recurring [Member]
Securities available for sale:
Securities available for sale	547	714
Other ABS | Fair Value, Measurements, Recurring [Member] | Level 1
Securities available for sale:
Securities available for sale	0	0
Other ABS | Fair Value, Measurements, Recurring [Member] | Level 2
Securities available for sale:
Securities available for sale	547	714
Other ABS | Fair Value, Measurements, Recurring [Member] | Level 3
Securities available for sale:
Securities available for sale	0	0
Other securities | Fair Value, Measurements, Recurring [Member]
Securities available for sale:
Securities available for sale	989	721
Other securities | Fair Value, Measurements, Recurring [Member] | Level 1
Securities available for sale:
Securities available for sale	292	295
Other securities | Fair Value, Measurements, Recurring [Member] | Level 2
Securities available for sale:
Securities available for sale	688	417
Other securities | Fair Value, Measurements, Recurring [Member] | Level 3
Securities available for sale:
Securities available for sale	$ 9	$ 9

Fair Value Measurement Fair Val

Fair Value Measurement Fair Value Measurement - Schedule of Level 3 Inputs Reconciliation for Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Available-for-sale Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 455	$ 732	$ 578	$ 615
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income	65	0	82	13
Total Gains or (Losses) (Realized/Unrealized), Included in OCI	(37)	11	(19)	19
Purchases	50	135	110	388
Sales	(111)	0	(116)	0
Issuances	0	0	0	0
Settlements	(24)	(36)	(72)	(97)
Transfers Into Level 3	222	122	434	393
Transfers Out of Level 3	(25)	(273)	(402)	(640)
Ending balance	595	691	595	691
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	5	8	17	22
RMBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	429	555	518	504
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income	65	9	82	22
Total Gains or (Losses) (Realized/Unrealized), Included in OCI	(37)	11	(19)	17
Purchases	0	51	0	110
Sales	(111)	0	(116)	0
Issuances	0	0	0	0
Settlements	(23)	(27)	(69)	(75)
Transfers Into Level 3	222	122	434	329
Transfers Out of Level 3	(25)	(137)	(310)	(323)
Ending balance	520	584	520	584
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	5	8	17	22
CMBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	17	128	51	97
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income	0	0	0	0
Total Gains or (Losses) (Realized/Unrealized), Included in OCI	0	0	0	2
Purchases	50	78	110	234
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(1)	(2)	(3)	(12)
Transfers Into Level 3	0	0	0	64
Transfers Out of Level 3	0	(106)	(92)	(287)
Ending balance	66	98	66	98
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	0	0	0	0
Other ABS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		30		0
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income		0		0
Total Gains or (Losses) (Realized/Unrealized), Included in OCI		0		0
Purchases		0		30
Sales		0		0
Issuances		0		0
Settlements		0		0
Transfers Into Level 3		0		0
Transfers Out of Level 3		(30)		(30)
Ending balance		0		0
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held		0		0
Other securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9	19	9	14
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income	0	(9)	0	(9)
Total Gains or (Losses) (Realized/Unrealized), Included in OCI	0	0	0	0
Purchases		6		14
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	(7)	0	(10)
Transfers Into Level 3	0	0	0	0
Transfers Out of Level 3	0	0	0	0
Ending balance	9	9	9	9
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	0	0	0	0
Consumer MSRs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	85	53	80	68
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income	1	3	(3)	(17)
Total Gains or (Losses) (Realized/Unrealized), Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	6	7	18	15
Settlements	(2)	(1)	(5)	(4)
Transfers Into Level 3	0	0	0	0
Transfers Out of Level 3	0	0	0	0
Ending balance	90	62	90	62
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	1	3	(3)	(17)
Derivative Financial Instruments, Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	57	85	47	57
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income	(2)	0	1	28
Total Gains or (Losses) (Realized/Unrealized), Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	25	18	65	60
Settlements	(20)	(27)	(45)	(53)
Transfers Into Level 3	0	0	0	0
Transfers Out of Level 3	(3)	(2)	(11)	(18)
Ending balance	57	74	57	74
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	(2)	0	1	28
Retained interest in securitizations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	188	203	201	211
Total Gains or (Losses) (Realized/Unrealized), Included in Net Income	(10)	2	(23)	(6)
Total Gains or (Losses) (Realized/Unrealized), Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers Into Level 3	0	0	0	0
Transfers Out of Level 3	0	0	0	0
Ending balance	178	205	178	205
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	$ (10)	$ 2	$ (23)	$ (6)

Fair Value Measurement Fair V92

Fair Value Measurement Fair Value Measurement - Schedule of Level 3 Inputs Reconciliation for Liabilities (Details) - Derivative Financial Instruments, Liabilities [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ (32)	$ (67)	$ (29)	$ (27)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	0	1	(2)	(28)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	(7)	(1)	(20)	(32)
Settlements	7	22	17	35
Transfers Into Level 3	0	0	0	0
Transfers Out of Level 3	2	1	4	8
Ending balance	(30)	(44)	(30)	(44)
Net Unrealized Gains (Losses) Included in Net Income Related to Assets and Liabilities Still Held	$ 0	$ 1	$ (2)	$ (28)

Fair Value Measurement - Sche93

Fair Value Measurement - Schedule of Assets Measured at Fair Value on Recurring Basis Quantitative Information about Level 3 Fair Value Measurements (Detail) $ in Millions	Sep. 30, 2017USD ($)$ / SecurityLoan	Dec. 31, 2016USD ($)$ / SecurityLoan
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	$ 39,742	$ 40,737
Derivative Assets, Gross Amount	745	1,494
Consumer MSRs	90	80
Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	39,742	40,737
Derivative Assets, Gross Amount	509	955
Fair Value, Measurements, Recurring [Member] | RMBS
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	28,238	29,249
Fair Value, Measurements, Recurring [Member] | CMBS
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	4,829	4,988
Fair Value, Measurements, Recurring [Member] | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	595	578
Derivative Assets, Gross Amount	57	47
Consumer MSRs	90	80
Retained interests in securitizations	178	201
Fair Value, Measurements, Recurring [Member] | Level 3 | RMBS
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	$ 520	$ 518
Fair Value, Measurements, Recurring [Member] | Level 3 | RMBS | Discounted cash flows | Minimum
Fair Value Inputs [Abstract]
Yield (percent)	2.00%	0.00%
Constant prepayment rate (percent)	0.00%	0.00%
Default rate (percent)	0.00%	0.00%
Loss severity (percent)	0.00%	9.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | RMBS | Discounted cash flows | Maximum
Fair Value Inputs [Abstract]
Yield (percent)	9.00%	15.00%
Constant prepayment rate (percent)	15.00%	30.00%
Default rate (percent)	10.00%	16.00%
Loss severity (percent)	90.00%	87.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | RMBS | Discounted cash flows | Weighted Average
Fair Value Inputs [Abstract]
Yield (percent)	4.00%	5.00%
Constant prepayment rate (percent)	4.00%	4.00%
Default rate (percent)	4.00%	4.00%
Loss severity (percent)	65.00%	57.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | CMBS
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	$ 66	$ 51
Fair Value, Measurements, Recurring [Member] | Level 3 | CMBS | Discounted cash flows | Minimum
Fair Value Inputs [Abstract]
Yield (percent)	2.00%	2.00%
Constant prepayment rate (percent)	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | CMBS | Discounted cash flows | Maximum
Fair Value Inputs [Abstract]
Yield (percent)	3.00%	2.00%
Constant prepayment rate (percent)	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | CMBS | Discounted cash flows | Weighted Average
Fair Value Inputs [Abstract]
Yield (percent)	2.00%	2.00%
Constant prepayment rate (percent)	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Foreign government bonds
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Securities available for sale	$ 9	$ 9
Fair Value, Measurements, Recurring [Member] | Level 3 | Foreign government bonds | Discounted cash flows | Minimum
Fair Value Inputs [Abstract]
Yield (percent)	2.00%	1.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Foreign government bonds | Discounted cash flows | Maximum
Fair Value Inputs [Abstract]
Yield (percent)	2.00%	2.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Foreign government bonds | Discounted cash flows | Weighted Average
Fair Value Inputs [Abstract]
Yield (percent)	2.00%	1.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative assets
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Derivative Assets, Gross Amount	$ 57	$ 47
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative assets | Discounted cash flows | Minimum
Fair Value Inputs [Abstract]
Swap rates (percent)	2.00%	2.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative assets | Discounted cash flows | Maximum
Fair Value Inputs [Abstract]
Swap rates (percent)	2.00%	2.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative assets | Discounted cash flows | Weighted Average
Fair Value Inputs [Abstract]
Swap rates (percent)	2.00%	2.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Consumer MSRs
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Consumer MSRs	$ 90	$ 80
Fair Value, Measurements, Recurring [Member] | Level 3 | Consumer MSRs | Discounted cash flows | Minimum
Fair Value Inputs [Abstract]
Total prepayment rate (percent)	7.00%	8.00%
Discount rate (percent)	15.00%	15.00%
Option adjusted spread rate (percent)	4.00%	5.80%
Servicing cost ($ per loan) | $ / SecurityLoan	75	75
Fair Value, Measurements, Recurring [Member] | Level 3 | Consumer MSRs | Discounted cash flows | Maximum
Fair Value Inputs [Abstract]
Total prepayment rate (percent)	21.00%	20.00%
Discount rate (percent)	15.00%	15.00%
Option adjusted spread rate (percent)	14.64%	15.00%
Servicing cost ($ per loan) | $ / SecurityLoan	100	100
Fair Value, Measurements, Recurring [Member] | Level 3 | Consumer MSRs | Discounted cash flows | Weighted Average
Fair Value Inputs [Abstract]
Total prepayment rate (percent)	15.00%	15.00%
Discount rate (percent)	15.00%	15.00%
Option adjusted spread rate (percent)	4.97%	6.36%
Servicing cost ($ per loan) | $ / SecurityLoan	76	76
Fair Value, Measurements, Recurring [Member] | Level 3 | Retained interest in securitizations
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Retained interests in securitizations	$ 178	$ 201
Fair Value, Measurements, Recurring [Member] | Level 3 | Retained interest in securitizations | Discounted cash flows | Minimum
Fair Value Inputs [Abstract]
Life of receivables (months)	2 months	6 months
Constant prepayment rate (percent)	2.00%	2.00%
Default rate (percent)	1.00%	1.00%
Loss severity (percent)	5.00%	7.00%
Discount rate (percent)	3.00%	4.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Retained interest in securitizations | Discounted cash flows | Maximum
Fair Value Inputs [Abstract]
Life of receivables (months)	87 months	87 months
Constant prepayment rate (percent)	10.00%	11.00%
Default rate (percent)	11.00%	6.00%
Loss severity (percent)	113.00%	102.00%
Discount rate (percent)	11.00%	11.00%

Fair Value Measurement Fair V94

Fair Value Measurement Fair Value Measurement - Schedule of Liabilities Measured at Fair Value on Recurring Basis Quantitative Information about Level 3 Fair Value Measurements (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative Liabilities, Gross Amount	$ 1,031	$ 1,438
Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative Liabilities, Gross Amount	433	1,102
Fair Value, Measurements, Recurring [Member] | Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative Liabilities, Gross Amount	30	29
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative Liabilities, Gross Amount	$ 30	$ 29
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative liabilities | Discounted cash flows | Minimum
Fair Value Inputs [Abstract]
Swap rates (percent)	2.00%	2.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative liabilities | Discounted cash flows | Maximum
Fair Value Inputs [Abstract]
Swap rates (percent)	2.00%	2.00%
Fair Value, Measurements, Recurring [Member] | Level 3 | Derivative liabilities | Discounted cash flows | Weighted Average
Fair Value Inputs [Abstract]
Swap rates (percent)	2.00%	2.00%

Fair Value Measurement - Sche95

Fair Value Measurement - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans held for investment	$ 0	$ 0
Loans held for sale	1,578	1,038
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans held for investment	249,622	242,935
Loans held for sale	2	0
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans held for investment	563	587
Loans held for sale	775	157
Other Assets, Fair Value Disclosure	29	83
Total	1,367	827
Nonrecurring | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed Properties and Repossessed Assets	22	43
Long Lived Assets Held for Sale	7	40
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans held for investment	0	0
Loans held for sale	773	157
Other Assets, Fair Value Disclosure	0	0
Total	773	157
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans held for investment	563	587
Loans held for sale	2	0
Other Assets, Fair Value Disclosure	29	83
Total	$ 594	$ 670

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - Level 3 - Loans Held for Investment - Appraisal Value	Sep. 30, 2017	Dec. 31, 2016
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-recoverable rate	0.00%	0.00%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-recoverable rate	17.00%	73.00%
Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-recoverable rate	12.00%	16.00%

Fair Value Measurement - Sche97

Fair Value Measurement - Schedule of Earnings Related to Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Assets:
Loans held for investment	$ (237)	$ (142)
Loans held for sale	(5)	0
Other assets	(7)	(15)
Total	$ (249)	$ (157)

Fair Value Measurement - Sche98

Fair Value Measurement - Schedule of Fair Value of Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Financial assets:
Securities held to maturity	$ 29,327	$ 26,196
Level 1
Financial assets:
Cash and cash equivalents	4,154	4,185
Restricted cash for securitization investors	304	2,517
Securities held to maturity	199	199
Net loans held for investment	0	0
Loans held for sale	0	0
Interest receivable	0	0
Other investments	0	0
Financial liabilities:
Deposits	26,106	25,502
Securitized debt obligations	0	0
Senior and subordinated notes	0	0
Federal funds purchased and securities loaned or sold under agreements to repurchase	0	0
Other borrowings	0	0
Interest payable	0	0
Level 2
Financial assets:
Cash and cash equivalents	4,330	5,791
Restricted cash for securitization investors	0	0
Securities held to maturity	29,122	25,962
Net loans held for investment	0	0
Loans held for sale	1,578	1,038
Interest receivable	1,426	1,351
Other investments	1,793	2,020
Financial liabilities:
Deposits	215,528	211,580
Securitized debt obligations	17,196	18,920
Senior and subordinated notes	29,004	23,774
Federal funds purchased and securities loaned or sold under agreements to repurchase	767	992
Other borrowings	13,137	17,180
Interest payable	301	327
Level 3
Financial assets:
Cash and cash equivalents	0	0
Restricted cash for securitization investors	0	0
Securities held to maturity	6	35
Net loans held for investment	249,622	242,935
Loans held for sale	2	0
Interest receivable	0	0
Other investments	11	9
Financial liabilities:
Deposits	0	0
Securitized debt obligations	0	0
Senior and subordinated notes	0	0
Federal funds purchased and securities loaned or sold under agreements to repurchase	0	0
Other borrowings	0	0
Interest payable	0	0
Carrying Value
Financial assets:
Cash and cash equivalents	8,484	9,976
Restricted cash for securitization investors	304	2,517
Securities held to maturity	28,650	25,712
Net loans held for investment	245,004	239,083
Loans held for sale	1,566	1,043
Interest receivable	1,426	1,351
Other investments	1,803	2,029
Financial liabilities:
Deposits	239,062	236,768
Securitized debt obligations	17,087	18,826
Senior and subordinated notes	28,420	23,431
Federal funds purchased and securities loaned or sold under agreements to repurchase	767	992
Other borrowings	13,136	17,211
Interest payable	301	327
Estimated Fair Value
Financial assets:
Cash and cash equivalents	8,484	9,976
Restricted cash for securitization investors	304	2,517
Securities held to maturity	29,327	26,196
Net loans held for investment	249,622	242,935
Loans held for sale	1,580	1,038
Interest receivable	1,426	1,351
Other investments	1,804	2,029
Financial liabilities:
Deposits	241,634	237,082
Securitized debt obligations	17,196	18,920
Senior and subordinated notes	29,004	23,774
Federal funds purchased and securities loaned or sold under agreements to repurchase	767	992
Other borrowings	13,137	17,180
Interest payable	$ 301	$ 327

Business Segments - Additional

Business Segments - Additional Information (Detail) - Segment	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Segment Reporting Information [Line Items]
Number of Operating Segments	3	3

Business Segments - Schedule of

Business Segments - Schedule of Segment Results and Reconciliation (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net interest income	$ 5,700	$ 5,277	$ 16,647	$ 15,426
Non-interest income	1,285	1,184	3,577	3,509
Total net revenue	6,985	6,461	20,224	18,935
Provision for loan, lease and other losses	1,833	1,588	5,625	4,707
Total non-interest expense	3,567	3,361	10,415	9,879
Income from continuing operations before income taxes	1,585	1,512	4,184	4,349
Income tax provision (benefit)	448	496	1,205	1,372
Income from continuing operations, net of tax	1,137	1,016	2,979	2,977
Loans held for investment	252,422	238,019	252,422	238,019	$ 245,586
Total deposits	239,062	225,981	239,062	225,981	236,768
Operating Segments | Credit Card
Segment Reporting Information [Line Items]
Net interest income	3,440	3,204	10,080	9,282
Non-interest income	865	825	2,478	2,531
Total net revenue	4,305	4,029	12,558	11,813
Provision for loan, lease and other losses	1,466	1,272	4,580	3,604
Total non-interest expense	1,961	1,884	5,808	5,630
Income from continuing operations before income taxes	878	873	2,170	2,579
Income tax provision (benefit)	306	318	774	931
Income from continuing operations, net of tax	572	555	1,396	1,648
Loans held for investment	109,130	99,201	109,130	99,201
Total deposits	0	0	0	0
Operating Segments | Consumer Banking
Segment Reporting Information [Line Items]
Net interest income	1,649	1,472	4,744	4,331
Non-interest income	192	201	570	567
Total net revenue	1,841	1,673	5,314	4,898
Provision for loan, lease and other losses	293	256	840	690
Total non-interest expense	1,051	1,034	3,152	3,030
Income from continuing operations before income taxes	497	383	1,322	1,178
Income tax provision (benefit)	181	139	482	428
Income from continuing operations, net of tax	316	244	840	750
Loans held for investment	75,564	72,285	75,564	72,285	66,916
Total deposits	184,719	178,793	184,719	178,793
Operating Segments | Commercial Banking
Segment Reporting Information [Line Items]
Net interest income	560	555	1,695	1,651
Non-interest income	179	156	520	403
Total net revenue	739	711	2,215	2,054
Provision for loan, lease and other losses	63	61	201	417
Total non-interest expense	394	349	1,166	1,014
Income from continuing operations before income taxes	282	301	848	623
Income tax provision (benefit)	103	110	310	227
Income from continuing operations, net of tax	179	191	538	396
Loans held for investment	67,670	66,457	67,670	66,457	$ 66,916
Total deposits	32,783	33,611	32,783	33,611
Other
Segment Reporting Information [Line Items]
Net interest income	51	46	128	162
Non-interest income	49	2	9	8
Total net revenue	100	48	137	170
Provision for loan, lease and other losses	11	(1)	4	(4)
Total non-interest expense	161	94	289	205
Income from continuing operations before income taxes	(72)	(45)	(156)	(31)
Income tax provision (benefit)	(142)	(71)	(361)	(214)
Income from continuing operations, net of tax	70	26	205	183
Loans held for investment	58	76	58	76
Total deposits	$ 21,560	$ 13,577	$ 21,560	$ 13,577

Commitments, Contingencies, 101

Commitments, Contingencies, Guarantees, and Others Commitments, Contingencies, Guarantees, and Others - Schedule of letter of credit and other loan commitments (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Letter of Credit Issued Contractual Amount and Unused Commitment to Extend Credit	$ 386,727	$ 343,202
Off-balance Sheet Lending Commitment Carrying Value	131	140
Credit Card Portfolio Segment [Member]
Loss Contingencies [Line Items]
Unused Commitments to Extend Credit	354,155	312,864
Other Portfolio Segments, Excluding Credit Card
Loss Contingencies [Line Items]
Unused Commitments to Extend Credit	30,498	28,402
Off-balance Sheet Lending Commitment Carrying Value	92	98
Advised Line of Credit	898	699
Letter of Credit [Member]
Loss Contingencies [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,074	1,936
Off-balance Sheet Lending Commitment Carrying Value	$ 39	$ 42

Commitments, Contingencies, 102

Commitments, Contingencies, Guarantees, and Others - Guarantees, Loss Sharing, U.K Cross Sell (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 5,656		$ 5,325
Insurance Claims [Member]
Loss Contingencies [Line Items]
Loss contingency accrual	298		238
Loss accrual increase (decrease)	0	$ 99
Loss Contingency, Range of Possible Loss, Portion Not Accrued	200
Gpm Mfh [Member]
Loss Contingencies [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	391
Loss contingency accrual	61
Loss Sharing Agreement
Loss Contingencies [Line Items]
Guarantee Obligation	$ 52		$ 48

Commitments, Contingencies, 103

Commitments, Contingencies, Guarantees, and Others - Schedule of Unpaid Principal Balance of Mortgage Loans Originated and Sold to Third Parties Based on Category of Purchaser (Details) $ in Millions	9 Months Ended	49 Months Ended
	Sep. 30, 2017USD ($)	Feb. 28, 2009Subsidiary	Dec. 31, 2016USD ($)
Loss Contingencies [Line Items]
Number of subsidiaries acquired that originated residential mortgage loans | Subsidiary		3
Subsidiaries
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Estimated Unpaid Principal Balance	$ 15,000		$ 17,000
Unpaid principal balance, delinquent 90 days or greater	2,000
Losses realized by third party	23,000
Unresolved Repurchase Claims, Face Amount	566		1,400
Increase (Decrease) In Unresolved Repurchase Claims Face Amount	803
Subsidiaries | 2005 to 2008 Year
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Original Principal Balance	111,000
Subsidiaries | Insured Securitizations
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Estimated Unpaid Principal Balance	3,000		3,000
Subsidiaries | Insured Securitizations | 2005 to 2008 Year
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Original Principal Balance	$ 20,000
Percent covered by bond insurance	48.00%
Original principal balance, sold to third party with repurchase requests	$ 16,000
Original principal balance, sold to third party without repurchase requests	4,000
Subsidiaries | Government Sponsored Enterprises [Member]
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Estimated Unpaid Principal Balance	1,000		2,000
Subsidiaries | Government Sponsored Enterprises [Member] | 2005 to 2008 Year
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Original Principal Balance	11,000
Subsidiaries | Uninsured Securitizations and Other
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Estimated Unpaid Principal Balance	11,000		$ 12,000
Subsidiaries | Uninsured Securitizations and Other | 2005 to 2008 Year
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Original Principal Balance	80,000
Subsidiaries | Uninsured Securitizations | 2005 to 2008 Year
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Original Principal Balance	48,000
Subsidiaries | Private Investors | 2005 to 2008 Year
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Original Principal Balance	22,000
Subsidiaries | Various Known and Unknown Investors | 2005 to 2008 Year
Mortgage Loans on Real Estate, Sold to Third Party [Abstract]
Original Principal Balance	$ 10,000

Commitments, Contingencies, 104

Commitments, Contingencies, Guarantees, and Others - Schedule of Changes in Representation and Warranty Reserve (Details) - Subsidiaries - Representation and Warranty Liability [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loss Contingency Accrual [Roll Forward]
Representation and warranty repurchase reserve, beginning of period	$ 521	$ 614	$ 630	$ 610
Provision (benefit) for mortgage representation and warranty losses	12	18	(74)	21
Net realized losses	(132)	0	(155)	1
Representation and warranty repurchase reserve, end of period	401	632	401	632
Continuing Operations
Loss Contingency Accrual [Roll Forward]
Provision (benefit) for mortgage representation and warranty losses	(1)	0	(26)	(2)
Discontinued Operations
Loss Contingency Accrual [Roll Forward]
Provision (benefit) for mortgage representation and warranty losses	$ 13	$ 18	$ (48)	$ 23

Commitments, Contingencies, 105

Commitments, Contingencies, Guarantees, and Others - Schedule of Allocation of Representation and Warranty Reserve (Details) $ in Millions	49 Months Ended
	Feb. 28, 2009Subsidiary	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Loss Contingencies [Line Items]
Number of subsidiaries acquired that originated residential mortgage loans | Subsidiary	3
Subsidiaries | Representation and Warranty Liability [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual		$ 401	$ 521	$ 630	$ 632	$ 614	$ 610
Loss Contingency, Range of Possible Loss, Portion Not Accrued		550		$ 1,500
Subsidiaries | 2005 to 2008 Year
Loss Contingencies [Line Items]
Loans sold 2005 to 2008		111,000
Subsidiaries | 2005 to 2008 Year | Government-sponsored enterprises (“GSEs”)
Loss Contingencies [Line Items]
Loans sold 2005 to 2008		11,000
Subsidiaries | 2005 to 2008 Year | Insured Securitizations
Loss Contingencies [Line Items]
Loans sold 2005 to 2008		20,000
Original principal balance, sold to third party with repurchase requests		16,000
Original principal balance, sold to third party without repurchase requests		4,000
Subsidiaries | 2005 to 2008 Year | Uninsured Securitizations And Other Whole Loans Sales [Member]
Loss Contingencies [Line Items]
Loans sold 2005 to 2008		80,000
Subsidiaries | 2005 to 2008 Year | Uninsured Securitizations
Loss Contingencies [Line Items]
Loans sold 2005 to 2008		48,000
Subsidiaries | 2005 to 2008 Year | Private Investors
Loss Contingencies [Line Items]
Loans sold 2005 to 2008		$ 22,000

Commitments, Contingencies, 106

Commitments, Contingencies, Guarantees, and Others - Litigation (Details) $ in Millions	1 Months Ended		3 Months Ended
	Jul. 31, 2012USD ($)	Feb. 28, 2009USD ($)ContractMortgageLoan	Jul. 31, 2012USD ($)trustsummon	Sep. 30, 2017USD ($)
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss				$ 250
Pending Litigation | Interchange Litigation
Loss Contingencies [Line Items]
Litigation settlement, attributable to reporting entity and third party	$ 6,600
Litigation settlement, attributable to reporting entity and third party, percent of transactions	0.10%
Litigation settlement, attributable to reporting entity and third party, period of payment of settlement	8 months
GreenPoint Subsidiary | Pending Litigation | U.S. Bank Litigation
Loss Contingencies [Line Items]
Number of contracts breached | Contract		2
Number of mortgage loans sold to third party under litigation | MortgageLoan		30,000
Mortgage loans sold to third party, face amount under litigation		$ 1,800
GreenPoint Subsidiary | Pending Litigation | FHFA Litigation
Loss Contingencies [Line Items]
Mortgage loans sold to third party, face amount under litigation	$ 3,400		$ 3,400
Number of summons filed | summon			3
Number of residential mortgage backed securities trusts | trust			3