U.S. Bancorp (USB) 10-K 23 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2016	Jan. 31, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	USB
Entity Registrant Name	US BANCORP \DE\
Entity Central Index Key	36,104
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		1,694,070,891
Entity Public Float			$ 69.3

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks		$ 15,705	$ 11,147
Investment securities
Held-to-maturity (fair value $42,435 and $43,493, respectively)		42,991	43,590
Available-for-sale ($755 and $1,018 pledged as collateral, respectively)	[1]	66,284	61,997
Loans held for sale (including $4,822 and $3,110 of mortgage loans carried at fair value, respectively)		4,826	3,184
Loans
Commercial		93,386	88,402
Commercial real estate		43,098	42,137
Residential mortgages		57,274	53,496
Credit card		21,749	21,012
Other retail		53,864	51,206
Total loans, excluding covered loans		269,371	256,253
Covered loans		3,836	4,596
Total loans		273,207	260,849
Less allowance for loan losses		(3,813)	(3,863)
Net loans		269,394	256,986
Premises and equipment		2,443	2,513
Goodwill		9,344	9,361
Other intangible assets		3,303	3,350
Other assets (including $314 and $121 of trading securities at fair value pledged as collateral, respectively)	[1]	31,674	29,725
Total assets		445,964	421,853
Deposits
Noninterest-bearing		86,097	83,766
Interest-bearing	[2]	248,493	216,634
Total deposits		334,590	300,400
Short-term borrowings		13,963	27,877
Long-term debt		33,323	32,078
Other liabilities		16,155	14,681
Total liabilities		398,031	375,036
Shareholders' equity
Preferred stock		5,501	5,501
Common stock, par value $0.01 a share - authorized: 4,000,000,000 shares; issued: 2016 and 2015 - 2,125,725,742 shares		21	21
Capital surplus		8,440	8,376
Retained earnings		50,151	46,377
Less cost of common stock in treasury: 2016 - 428,813,585 shares; 2015 - 380,534,801 shares		(15,280)	(13,125)
Accumulated other comprehensive income (loss)		(1,535)	(1,019)
Total U.S. Bancorp shareholders' equity		47,298	46,131
Noncontrolling interests		635	686
Total equity		47,933	46,817
Total liabilities and equity		$ 445,964	$ 421,853
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.
[2]	lncludes time deposits greater than $250,000 balances of $3.0 billion and $2.6 billion at December 31, 2016 and 2015, respectively.

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Held-to-maturity securities, Fair Value	$ 42,435	$ 43,493
Securities, pledged as collateral	755	1,000
Mortgage loans, carried at fair value	$ 4,822	$ 3,110
Common stock, par value	$ 0.01	$ 0.01
Common stock, share-authorized (actual number of shares)	4,000,000,000	4,000,000,000
Common stock, shares issued (actual number of shares)	2,125,725,742	2,125,725,742
Treasury stock, shares (actual number of shares)	428,813,585	380,534,801
Time deposits greater than 250,000	$ 3,000	$ 2,600
Available-for-Sale Securities [Member]
Securities, pledged as collateral	755	1,018
Trading Securities [Member]
Securities, pledged as collateral	$ 314	$ 121

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Income
Loans	$ 10,810	$ 10,059	$ 10,113
Loans held for sale	154	206	128
Investment securities	2,078	2,001	1,866
Other interest income	125	136	121
Total interest income	13,167	12,402	12,228
Interest Expense
Deposits	622	457	465
Short-term borrowings	263	245	263
Long-term debt	754	699	725
Total interest expense	1,639	1,401	1,453
Net interest income	11,528	11,001	10,775
Provision for credit losses	1,324	1,132	1,229
Net interest income after provision for credit losses	10,204	9,869	9,546
Noninterest Income
Credit and debit card revenue	1,177	1,070	1,021
Corporate payment products revenue	712	708	724
Merchant processing services	1,592	1,547	1,511
ATM processing services	338	318	321
Trust and investment management fees	1,427	1,321	1,252
Deposit service charges	725	702	693
Treasury management fees	583	561	545
Commercial products revenue	871	867	854
Mortgage banking revenue	979	906	1,009
Investment products fees	158	185	191
Securities gains (losses), net
Realized gains (losses), net	27	1	11
Total other-than-temporary impairment	(6)	(1)	(7)
Portion of other-than-temporary impairment recognized in other comprehensive income	1		(1)
Total securities gains (losses), net	22		3
Other	993	907	1,040
Total noninterest income	9,577	9,092	9,164
Noninterest Expense
Compensation	5,212	4,812	4,523
Employee benefits	1,119	1,167	1,041
Net occupancy and equipment	988	991	987
Professional services	502	423	414
Marketing and business development	435	361	382
Technology and communications	955	887	863
Postage, printing and supplies	311	297	328
Other intangibles	179	174	199
Other	1,975	1,819	1,978
Total noninterest expense	11,676	10,931	10,715
Income before income taxes	8,105	8,030	7,995
Applicable income taxes	2,161	2,097	2,087
Net income	5,944	5,933	5,908
Net (income) loss attributable to noncontrolling interests	(56)	(54)	(57)
Net income attributable to U.S. Bancorp	5,888	5,879	5,851
Net income applicable to U.S. Bancorp common shareholders	$ 5,589	$ 5,608	$ 5,583
Earnings per common share	$ 3.25	$ 3.18	$ 3.10
Diluted earnings per common share	3.24	3.16	3.08
Dividends declared per common share	$ 1.070	$ 1.010	$ 0.965
Average common shares outstanding	1,718	1,764	1,803
Average diluted common shares outstanding	1,724	1,772	1,813

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 5,944	$ 5,933	$ 5,908
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on securities available-for-sale	(858)	(457)	764
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	(1)		1
Changes in unrealized gains and losses on derivative hedges	74	(25)	(41)
Foreign currency translation	(28)	20	(4)
Changes in unrealized gains and losses on retirement plans	(255)	(142)	(733)
Reclassification to earnings of realized gains and losses	247	393	297
Income taxes related to other comprehensive income (loss)	305	88	(109)
Total other comprehensive income (loss)	(516)	(123)	175
Comprehensive income	5,428	5,810	6,083
Comprehensive (income) loss attributable to noncontrolling interests	(56)	(54)	(57)
Comprehensive income attributable to U.S. Bancorp	$ 5,372	$ 5,756	$ 6,026

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Preferred Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total U.S. Bancorp Shareholders' Equity [Member]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2013	$ 41,807	$ 21	$ 4,756	$ 8,216	$ 38,667	$ (9,476)	$ (1,071)	$ 41,113	$ 694
Shares, Beginning Balance at Dec. 31, 2013		1,825
Net income (loss)	5,908				5,851			5,851	57
Other comprehensive income (loss)	175						175	175
Preferred stock dividends	(243)				(243)			(243)
Common stock dividends	(1,745)				(1,745)			(1,745)
Issuance of common and treasury stock	480			(13)		493		480
Issuance of common and treasury stock, shares		15
Purchase of treasury stock	$ (2,262)					(2,262)		(2,262)
Purchase of treasury stock, shares	(54)	(54)
Distributions to noncontrolling interests	$ (59)								(59)
Net other changes in noncontrolling interests	(3)								(3)
Stock option and restricted stock grants	110			110				110
Ending Balance at Dec. 31, 2014	44,168	$ 21	4,756	8,313	42,530	(11,245)	(896)	43,479	689
Shares, Ending Balance at Dec. 31, 2014		1,786
Net income (loss)	5,933				5,879			5,879	54
Other comprehensive income (loss)	(123)						(123)	(123)
Preferred stock dividends	(247)				(247)			(247)
Common stock dividends	(1,785)				(1,785)			(1,785)
Issuance of preferred stock	745		745					745
Issuance of common and treasury stock	311			(55)		366		311
Issuance of common and treasury stock, shares		11
Purchase of treasury stock	$ (2,246)					(2,246)		(2,246)
Purchase of treasury stock, shares	(52)	(52)
Distributions to noncontrolling interests	$ (55)								(55)
Net other changes in noncontrolling interests	(2)								(2)
Stock option and restricted stock grants	118			118				118
Ending Balance at Dec. 31, 2015	$ 46,817	$ 21	5,501	8,376	46,377	(13,125)	(1,019)	46,131	686
Shares, Ending Balance at Dec. 31, 2015	1,700	1,745
Net income (loss)	$ 5,944				5,888			5,888	56
Other comprehensive income (loss)	(516)						(516)	(516)
Preferred stock dividends	(281)				(281)			(281)
Common stock dividends	(1,842)				(1,842)			(1,842)
Issuance of common and treasury stock	374			(71)		445		374
Issuance of common and treasury stock, shares		13
Purchase of treasury stock	$ (2,600)					(2,600)		(2,600)
Purchase of treasury stock, shares	(61)	(61)
Distributions to noncontrolling interests	$ (56)								(56)
Purchase of noncontrolling interests	(40)			1	9			10	(50)
Net other changes in noncontrolling interests	(1)								(1)
Stock option and restricted stock grants	134			134				134
Ending Balance at Dec. 31, 2016	$ 47,933	$ 21	$ 5,501	$ 8,440	$ 50,151	$ (15,280)	$ (1,535)	$ 47,298	$ 635
Shares, Ending Balance at Dec. 31, 2016	1,700	1,697

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Activities
Net income attributable to U.S. Bancorp	$ 5,888	$ 5,879	$ 5,851
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	1,324	1,132	1,229
Depreciation and amortization of premises and equipment	291	307	302
Amortization of intangibles	179	174	199
(Gain) loss on sale of loans held for sale	(954)	(993)	(801)
(Gain) loss on sale of securities and other assets	(617)	(403)	(595)
Loans originated for sale in the secondary market, net of repayments	(42,867)	(43,312)	(30,858)
Proceeds from sales of loans held for sale	41,605	45,211	29,962
Other, net	487	787	43
Net cash provided by operating activities	5,336	8,782	5,332
Investing Activities
Proceeds from sales of available-for-sale investment securities	9,877	690	475
Proceeds from maturities of held-to-maturity investment securities	9,733	10,567	9,479
Proceeds from maturities of available-for-sale investment securities	14,625	13,395	7,212
Purchases of held-to-maturity investment securities	(9,171)	(9,234)	(15,597)
Purchases of available-for-sale investment securities	(29,684)	(20,502)	(21,752)
Net increase in loans outstanding	(13,383)	(11,788)	(12,873)
Proceeds from sales of loans	2,604	1,723	1,657
Purchases of loans	(2,881)	(4,475)	(2,355)
Acquisitions, net of cash acquired			3,436
Other, net	322	(1,526)	506
Net cash (used in) provided by investing activities	(17,958)	(21,150)	(29,812)
Financing Activities
Net increase in deposits	34,192	18,290	15,822
Net increase (decrease) in short-term borrowings	(13,914)	(2,016)	2,285
Proceeds from issuance of long-term debt	10,715	5,067	16,394
Principal payments or redemption of long-term debt	(9,495)	(5,311)	(4,128)
Proceeds from issuance of preferred stock		745
Proceeds from issuance of common stock	355	295	453
Repurchase of common stock	(2,556)	(2,190)	(2,200)
Cash dividends paid on preferred stock	(267)	(242)	(243)
Cash dividends paid on common stock	(1,810)	(1,777)	(1,726)
Purchase of noncontrolling interests	(40)
Net cash provided by (used in) financing activities	17,180	12,861	26,657
Change in cash and due from banks	4,558	493	2,177
Cash and due from banks at beginning of year	11,147	10,654	8,477
Cash and due from banks at end of year	15,705	11,147	10,654
Supplemental Cash Flow Disclosures
Cash paid for income taxes	595	742	748
Cash paid for interest	1,591	1,434	1,476
Net noncash transfers to foreclosed property	$ 156	$ 204	199
Acquisitions
Assets (sold) acquired			1,376
Liabilities sold (assumed)			(4,797)
Net			$ (3,421)

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	NOTE 1 Significant Accounting Policies U.S. Bancorp is a multi-state financial services holding company headquartered in Minneapolis, Minnesota. U.S. Bancorp and its subsidiaries (the “Company”) provide a full range of financial services, including lending and depository services through banking offices principally in the Midwest and West regions of the United States. The Company also engages in credit card, merchant, and ATM processing, mortgage banking, cash management, capital markets, insurance, trust and investment management, brokerage, and leasing activities, principally in domestic markets. Basis of Presentation The consolidated financial statements include the accounts of the Company and its subsidiaries and all variable interest entities (“VIEs”) for which the Company has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance, and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. Consolidation eliminates all significant intercompany accounts and transactions. Certain items in prior periods have been reclassified to conform to the current presentation. Uses of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual experience could differ from those estimates. Business Segments Within the Company, financial performance is measured by major lines of business based on the products and services provided to customers through its distribution channels. The Company has five reportable operating segments: Wholesale Banking and Commercial Real Estate Wholesale Banking and Commercial Real Estate offers lending, equipment finance and small-ticket leasing, depository services, treasury management, capital markets services, international trade services and other financial services to middle market, large corporate, commercial real estate, financial institution, non-profit and public sector clients. Consumer and Small Business Banking Consumer and Small Business Banking delivers products and services through banking offices, telephone servicing and sales, on-line services, direct mail, ATM processing and mobile devices, such as mobile phones and tablet computers. It encompasses community banking, metropolitan banking and indirect lending, as well as mortgage banking. Wealth Management and Securities Services Wealth Management and Securities Services provides private banking, financial advisory services, investment management, retail brokerage services, insurance, trust, custody and fund servicing through five businesses: Wealth Management, Corporate Trust Services, U.S. Bancorp Asset Management, Institutional Trust & Custody and Fund Services. Payment Services Payment Services includes consumer and business credit cards, stored-value cards, debit cards, corporate, government and purchasing card services, consumer lines of credit and merchant processing. Treasury and Corporate Support Treasury and Corporate Support includes the Company’s investment portfolios, funding, capital management, interest rate risk management, income taxes not allocated to business lines, including most investments in tax-advantaged projects, and the residual aggregate of those expenses associated with corporate activities that are managed on a consolidated basis. Segment Results Accounting policies for the lines of business are the same as those used in preparation of the consolidated financial statements with respect to activities specifically attributable to each business line. However, the preparation of business line results requires management to allocate funding costs and benefits, expenses and other financial elements to each line of business. For details of these methodologies and segment results, see “Basis for Financial Presentation” and Table 25 “Line of Business Financial Performance” included in Management’s Discussion and Analysis which is incorporated by reference into these Notes to Consolidated Financial Statements. Securities Realized gains or losses on securities are determined on a trade date basis based on the specific amortized cost of the investments sold. Trading Securities Debt and equity securities held for resale are classified as trading securities and are included in other assets and reported at fair value. Changes in fair value and realized gains or losses are reported in noninterest income. Available-for-sale Securities These securities are not trading securities but may be sold before maturity in response to changes in the Company’s interest rate risk profile, funding needs, demand for collateralized deposits by public entities or other reasons. Available-for-sale securities are carried at fair value with unrealized net gains or losses reported within other comprehensive income (loss). Declines in fair value for credit-related other-than-temporary impairment, if any, are reported in noninterest income. Held-to-maturity Securities Debt securities for which the Company has the positive intent and ability to hold to maturity are reported at historical cost adjusted for amortization of premiums and accretion of discounts. Declines in fair value for credit-related other-than-temporary impairment, if any, are reported in noninterest income. Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase Securities purchased under agreements to resell and securities sold under agreements to repurchase are accounted for as collateralized financing transactions with a receivable or payable recorded at the amounts at which the securities were acquired or sold, plus accrued interest. Collateral requirements are continually monitored and additional collateral is received or provided as required. The Company records a receivable or payable for cash collateral paid or received. Equity Investments in Operating Entities Equity investments in public entities in which the Company’s ownership is less than 20 percent are generally accounted for as available-for-sale securities and are carried at fair value. Similar investments in private entities are accounted for using the cost method. Investments in entities where the Company has a significant influence (generally between 20 percent and 50 percent ownership), but does not control the entity, are accounted for using the equity method. Investments in limited partnerships and limited liability companies where the Company’s ownership interest is greater than 5 percent are accounted for using the equity method. All equity investments are evaluated for impairment at least annually and more frequently if certain criteria are met. Loans The Company offers a broad array of lending products and categorizes its loan portfolio into three segments, which is the level at which it develops and documents a systematic methodology to determine the allowance for credit losses. The Company’s three loan portfolio segments are commercial lending, consumer lending and covered loans. The Company further disaggregates its loan portfolio segments into various classes based on their underlying risk characteristics. The two classes within the commercial lending segment are commercial loans and commercial real estate loans. The three classes within the consumer lending segment are residential mortgages, credit card loans and other retail loans. The covered loan segment consists of only one class. The Company’s accounting methods for loans differ depending on whether the loans are originated or purchased, and for purchased loans, whether the loans were acquired at a discount related to evidence of credit deterioration since date of origination. Originated Loans Held for Investment Loans the Company originates as held for investment are reported at the principal amount outstanding, net of unearned income, net deferred loan fees or costs, and any direct principal charge-offs. Interest income is accrued on the unpaid principal balances as earned. Loan and commitment fees and certain direct loan origination costs are deferred and recognized over the life of the loan and/or commitment period as yield adjustments. Purchased Loans All purchased loans (non-impaired and impaired) acquired after January 1, 2009 are initially measured at fair value as of the acquisition date in accordance with applicable authoritative accounting guidance. Credit discounts are included in the determination of fair value. An allowance for credit losses is not recorded at the acquisition date for loans purchased after January 1, 2009. In accordance with applicable authoritative accounting guidance, purchased non-impaired loans acquired in a business combination prior to January 1, 2009 were generally recorded at the predecessor’s carrying value including an allowance for credit losses. In determining the acquisition date fair value of purchased impaired loans, and in subsequent accounting, the Company generally aggregates purchased consumer loans and certain smaller balance commercial loans into pools of loans with common risk characteristics, while accounting for larger balance commercial loans individually. Expected cash flows at the purchase date in excess of the fair value of loans are recorded as interest income over the life of the loans if the timing and amount of the future cash flows is reasonably estimable. Subsequent to the purchase date, increases in cash flows over those expected at the purchase date are recognized as interest income prospectively. The present value of any decreases in expected cash flows, other than from decreases in variable interest rates, after the purchase date is recognized by recording an allowance for credit losses. Revolving loans, including lines of credit and credit cards loans, and leases are excluded from purchased impaired loans accounting. For purchased loans acquired after January 1, 2009 that are not deemed impaired at acquisition, credit discounts representing the principal losses expected over the life of the loan are a component of the initial fair value. Subsequent to the purchase date, the methods utilized to estimate the required allowance for credit losses for these loans is similar to originated loans; however, the Company records a provision for credit losses only when the required allowance exceeds any remaining credit discounts. The remaining differences between the purchase price and the unpaid principal balance at the date of acquisition are recorded in interest income over the life of the loans. Covered Assets Loans covered under loss sharing or similar credit protection agreements with the Federal Deposit Insurance Corporation (“FDIC”) are reported in loans along with the related indemnification asset. Foreclosed real estate covered under similar agreements is recorded in other assets. In accordance with applicable authoritative accounting guidance effective for the Company beginning January 1, 2009, all purchased loans and related indemnification assets are recorded at fair value at the date of purchase. Effective January 1, 2013, the Company amortizes any reduction in expected cash flows from the FDIC resulting from increases in expected cash flows from the covered assets (when there are no previous valuation allowances to reverse) over the shorter of the remaining contractual term of the indemnification agreements or the remaining life of the covered assets. Prior to January 1, 2013, the Company considered such increases in expected cash flows of purchased loans and decreases in expected cash flows of the FDIC indemnification assets together and recognized them over the remaining life of the loans. Commitments to Extend Credit Unfunded commitments for residential mortgage loans intended to be held for sale are considered derivatives and recorded in other assets and other liabilities on the Consolidated Balance Sheet at fair value with changes in fair value recorded in noninterest income. All other unfunded loan commitments are not considered derivatives and are not reported on the Consolidated Balance Sheet. For loans purchased after January 1, 2009, the fair value of the unfunded credit commitments is generally considered in the determination of the fair value of the loans recorded at the date of acquisition. Reserves for credit exposure on all other unfunded credit commitments are recorded in other liabilities. Allowance for Credit Losses The allowance for credit losses is established for probable and estimable losses incurred in the Company’s loan and lease portfolio, including unfunded credit commitments, and includes certain amounts that do not represent loss exposure to the Company because those losses are recoverable under loss sharing agreements with the FDIC. The allowance for credit losses is increased through provisions charged to operating earnings and reduced by net charge-offs. Management evaluates the allowance each quarter to ensure it appropriately reserves for incurred losses. The allowance recorded for loans in the commercial lending segment is based on reviews of individual credit relationships and considers the migration analysis of commercial lending segment loans and actual loss experience. In the migration analysis applied to risk rated loan portfolios, the Company currently examines up to a 16-year period of loss experience. For each loan type, this historical loss experience is adjusted as necessary to consider any relevant changes in portfolio composition, lending policies, underwriting standards, risk management practices or economic conditions. The results of the analysis are evaluated quarterly to confirm an appropriate historical time frame is selected for each commercial loan type. The allowance recorded for impaired loans greater than $5 million in the commercial lending segment is based on an individual loan analysis utilizing expected cash flows discounted using the original effective interest rate, the observable market price of the loan, or the fair value of the collateral, less selling costs, for collateral-dependent loans, rather than the migration analysis. The allowance recorded for all other commercial lending segment loans is determined on a homogenous pool basis and includes consideration of product mix, risk characteristics of the portfolio, bankruptcy experience, portfolio growth and historical losses, adjusted for current trends. The Company also considers the impacts of any loan modifications made to commercial lending segment loans and any subsequent payment defaults to its expectations of cash flows, principal balance, and current expectations about the borrower’s ability to pay in determining the allowance for credit losses. The allowance recorded for Troubled Debt Restructuring (“TDR”) loans and purchased impaired loans in the consumer lending segment is determined on a homogenous pool basis utilizing expected cash flows discounted using the original effective interest rate of the pool, or the prior quarter effective rate, respectively. The allowance for collateral-dependent loans in the consumer lending segment is determined based on the fair value of the collateral less costs to sell. The allowance recorded for all other consumer lending segment loans is determined on a homogenous pool basis and includes consideration of product mix, risk characteristics of the portfolio, bankruptcy experience, delinquency status, refreshed loan-to-value ratios when possible, portfolio growth and historical losses, adjusted for current trends. The Company also considers any modifications made to consumer lending segment loans including the impacts of any subsequent payment defaults since modification in determining the allowance for credit losses, such as the borrower’s ability to pay under the restructured terms, and the timing and amount of payments. The allowance for the covered loan segment is evaluated each quarter in a manner similar to that described for non-covered loans and reflects decreases in expected cash flows of those loans after the acquisition date. The provision for credit losses for covered loans considers the indemnification provided by the FDIC. In addition, subsequent payment defaults on loan modifications considered TDRs are considered in the underlying factors used in the determination of the appropriateness of the allowance for credit losses. For each loan segment, the Company estimates future loan charge-offs through a variety of analysis, trends and underlying assumptions. With respect to the commercial lending segment, TDRs may be collectively evaluated for impairment where observed performance history, including defaults, is a primary driver of the loss allocation. For commercial TDRs individually evaluated for impairment, attributes of the borrower are the primary factors in determining the allowance for credit losses. However, historical loss experience is also incorporated into the allowance methodology applied to this category of loans. With respect to the consumer lending segment, performance of the portfolio, including defaults on TDRs, is considered when estimating future cash flows. The Company’s methodology for determining the appropriate allowance for credit losses for each loan segment also considers the imprecision inherent in the methodologies used. As a result, in addition to the amounts determined under the methodologies described above, management also considers the potential impact of other qualitative factors which include, but are not limited to, economic factors; geographic and other concentration risks; delinquency and nonaccrual trends; current business conditions; changes in lending policy, underwriting standards and other relevant business practices; results of internal review; and the regulatory environment. The consideration of these items results in adjustments to allowance amounts included in the Company’s allowance for credit losses for each of the above loan segments. The Company also assesses the credit risk associated with off-balance sheet loan commitments, letters of credit, and derivatives. Credit risk associated with derivatives is reflected in the fair values recorded for those positions. The liability for off-balance sheet credit exposure related to loan commitments and other credit guarantees is included in other liabilities. Because business processes and credit risks associated with unfunded credit commitments are essentially the same as for loans, the Company utilizes similar processes to estimate its liability for unfunded credit commitments. Credit Quality The credit quality of the Company’s loan portfolios is assessed as a function of net credit losses, levels of nonperforming assets and delinquencies, and credit quality ratings as defined by the Company. For all loan classes, loans are considered past due based on the number of days delinquent except for monthly amortizing loans which are classified delinquent based upon the number of contractually required payments not made (for example, two missed payments is considered 30 days delinquent). When a loan is placed on nonaccrual status, unpaid accrued interest is reversed, reducing interest income in the current period. Commercial lending segment loans are generally placed on nonaccrual status when the collection of principal and interest has become 90 days past due or is otherwise considered doubtful. Commercial lending segment loans are generally fully or partially charged down to the fair value of the collateral securing the loan, less costs to sell, when the loan is placed on nonaccrual. Consumer lending segment loans are generally charged-off at a specific number of days or payments past due. Residential mortgages and other retail loans secured by 1-4 family properties are generally charged down to the fair value of the collateral securing the loan, less costs to sell, at 180 days past due. Residential mortgage loans and lines in a first lien position are placed on nonaccrual status in instances where a partial charge-off occurs unless the loan is well secured and in the process of collection. Residential mortgage loans and lines in a junior lien position secured by 1-4 family For all loan classes, interest payments received on nonaccrual loans are generally recorded as a reduction to a loan’s carrying amount while a loan is on nonaccrual and are recognized as interest income upon payoff of the loan. However, interest income may be recognized for interest payments if the remaining carrying amount of the loan is believed to be collectible. In certain circumstances, loans in any class may be restored to accrual status, such as when a loan has demonstrated sustained repayment performance or no amounts are past due and prospects for future payment are no longer in doubt; or when the loan becomes well secured and is in the process of collection. Loans where there has been a partial charge-off may be returned to accrual status if all principal and interest (including amounts previously charged-off) is expected to be collected and the loan is current. Covered loans not considered to be purchased impaired are evaluated for delinquency, nonaccrual status and charge-off consistent with the class of loan they would be included in had the loss share coverage not been in place. Generally, purchased impaired loans are considered accruing loans. However, the timing and amount of future cash flows for some loans is not reasonably estimable, and those loans are classified as nonaccrual loans with interest income not recognized until the timing and amount of the future cash flows can be reasonably estimated. The Company classifies its loan portfolios using internal credit quality ratings on a quarterly basis. These ratings include: pass, special mention and classified, and are an important part of the Company’s overall credit risk management process and evaluation of the allowance for credit losses. Loans with a pass rating represent those not classified on the Company’s rating scale for problem credits, as minimal credit risk has been identified. Special mention loans are those that have a potential weakness deserving management’s close attention. Classified loans are those where a well-defined weakness has been identified that may put full collection of contractual cash flows at risk. It is possible that others, given the same information, may reach different reasonable conclusions regarding the credit quality rating classification of specific loans. Troubled Debt Restructurings In certain circumstances, the Company may modify the terms of a loan to maximize the collection of amounts due when a borrower is experiencing financial difficulties or is expected to experience difficulties in the near-term. Concessionary modifications are classified as TDRs unless the modification results in only an insignificant delay in payments to be received. The Company recognizes interest on TDRs if the borrower complies with the revised terms and conditions as agreed upon with the Company and has demonstrated repayment performance at a level commensurate with the modified terms over several payment cycles, which is generally six months or greater. To the extent a previous restructuring was insignificant, the Company considers the cumulative effect of past restructurings related to the receivable when determining whether a current restructuring is a TDR. Loans classified as TDRs are considered impaired loans for reporting and measurement purposes. The Company has implemented certain restructuring programs that may result in TDRs. However, many of the Company’s TDRs are also determined on a case-by-case basis in connection with ongoing loan collection processes. For the commercial lending segment, modifications generally result in the Company working with borrowers on a case-by-case basis. Commercial and commercial real estate modifications generally include extensions of the maturity date and may be accompanied by an increase or decrease to the interest rate, which may not be deemed a market rate of interest. In addition, the Company may work with the borrower in identifying other changes that mitigate loss to the Company, which may include additional collateral or guarantees to support the loan. To a lesser extent, the Company may waive contractual principal. The Company classifies all of the above concessions as TDRs to the extent the Company determines that the borrower is experiencing financial difficulty. Modifications for the consumer lending segment are generally part of programs the Company has initiated. The Company participates in the United States Department of Treasury Home Affordable Modification Program (“HAMP”). HAMP gives qualifying homeowners an opportunity to permanently modify residential mortgage loans and achieve more affordable monthly payments, with the United States Department of Treasury compensating the Company for a portion of the reduction in monthly amounts due from borrowers participating in this program. The Company also modifies residential mortgage loans under Federal Housing Administration, United States Department of Veterans Affairs, or its own internal programs. Under these programs, the Company provides concessions to qualifying borrowers experiencing financial difficulties. The concessions may include adjustments to interest rates, conversion of adjustable rates to fixed rates, extension of maturity dates or deferrals of payments, capitalization of accrued interest and/or outstanding advances, or in limited situations, partial forgiveness of loan principal. In most instances, participation in residential mortgage loan restructuring programs requires the customer to complete a short-term trial period. A permanent loan modification is contingent on the customer successfully completing the trial period arrangement and the loan documents are not modified until that time. The Company reports loans in a trial period arrangement as TDRs and continues to report them as TDRs after the trial period. Credit card and other retail loan TDRs are generally part of distinct restructuring programs providing customers experiencing financial difficulty with modifications whereby balances may be amortized up to 60 months, and generally include waiver of fees and reduced interest rates. In addition, the Company considers secured loans to consumer borrowers that have debt discharged through bankruptcy where the borrower has not reaffirmed the debt to be TDRs. Modifications to loans in the covered segment are similar in nature to that described above for non-covered loans, and the evaluation and determination of TDR status is similar, except that acquired loans restructured after acquisition are not considered TDRs for accounting and disclosure purposes if the loans evidenced credit deterioration as of the acquisition date and are accounted for in pools. Losses associated with the modification on covered loans, including the economic impact of interest rate reductions, are generally eligible for reimbursement under loss sharing agreements with the FDIC. Impaired Loans For all loan classes, a loan is considered to be impaired when, based on current events or information, it is probable the Company will be unable to collect all amounts due per the contractual terms of the loan agreement. Impaired loans include all nonaccrual and TDR loans. For all loan classes, interest income on TDR loans is recognized under the modified terms and conditions if the borrower has demonstrated repayment performance at a level commensurate with the modified terms over several payment cycles. Interest income is generally not recognized on other impaired loans until the loan is paid off. However, interest income may be recognized for interest payments if the remaining carrying amount of the loan is believed to be collectible. Factors used by the Company in determining whether all principal and interest payments due on commercial and commercial real estate loans will be collected and, therefore, whether those loans are impaired include, but are not limited to, the financial condition of the borrower, collateral and/or guarantees on the loan, and the borrower’s estimated future ability to pay based on industry, geographic location and certain financial ratios. The evaluation of impairment on residential mortgages, credit card loans and other retail loans is primarily driven by delinquency status of individual loans or whether a loan has been modified, and considers any government guarantee where applicable. Individual covered loans, whose future losses are covered by loss sharing agreements with the FDIC that substantially reduce the risk of credit losses to the Company, are evaluated for impairment and accounted for in a manner consistent with the class of loan they would have been included in had the loss sharing coverage not been in place. Leases The Company’s lease portfolio includes both direct financing and leveraged leases. The net investment in direct financing leases is the sum of all minimum lease payments and estimated residual values, less unearned income. Unearned income is recorded in interest income over the terms of the leases to produce a level yield. The investment in leveraged leases is the sum of all lease payments, less nonrecourse debt payments, plus estimated residual values, less unearned income. Income from leveraged leases is recognized over the term of the leases based on the unrecovered equity investment. Residual values on leased assets are reviewed regularly for other-than-temporary impairment. Residual valuations for retail automobile leases are based on independent assessments of expected used car sale prices at the end-of-term. Impairment tests are conducted based on these valuations considering the probability of the lessee returning the asset to the Company, re-marketing efforts, insurance coverage and ancillary fees and costs. Valuations for commercial leases are based upon external or internal management appraisals. When there is impairment of the Company’s interest in the residual value of a leased asset, the carrying value is reduced to the estimated fair value with the writedown recognized in the current period. Other Real Estate Other real estate owned (“OREO”) is included in other assets, and is property acquired through foreclosure or other proceedings on defaulted loans. OREO is initially recorded at fair value, less estimated selling costs. The fair value of OREO is evaluated regularly and any decreases in value along with holding costs, such as taxes and insurance, are reported in noninterest expense. Loans Held For Sale Loans held for sale (“LHFS”) represent mortgage loans intended to be sold in the secondary market and other loans that management has an active plan to sell. LHFS are carried at the lower-of-cost-or-fair value as determined on an aggregate basis by type of loan with the exception of loans for which the Company has elected fair value accounting, which are carried at fair value. The credit component of any writedowns upon the transfer of loans to LHFS is reflected in loan charge-offs. Where an election is made to carry the LHFS at fair value, any change in fair value is recognized in noninterest income. Where an election is made to carry LHFS at lower-of-cost-or-fair value, any further decreases are recognized in noninterest income and increases in fair value above the loan cost basis are not recognized until the loans are sold. Fair value elections are made at the time of origination or purchase based on the Company’s fair value election policy. The Company has elected fair value accounting for substantially all its mortgage loans held for sale (“MLHFS”). Derivative Financial Instruments In the ordinary course of business, the Company enters into derivative transactions to manage various risks and to accommodate the business requirements of its customers. Derivative instruments are reported in other assets or other liabilities at fair value. Changes in a derivative’s fair value are recognized currently in earnings unless specific hedge accounting criteria are met. All derivative instruments that qualify and are designated for hedge accounting are recorded at fair value and classified as either a hedge of the fair value of a recognized asset or liability (“fair value hedge”); a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”); or a hedge of the volatility of a net investment in foreign operations driven by changes in foreign curr

Accounting Changes

Accounting Changes	12 Months Ended
	Dec. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Accounting Changes	NOTE 2 Accounting Changes Revenue Recognition In May 2014, the Financial Accounting Standards Board (“FASB”) issued accounting guidance, originally effective for the Company on January 1, 2017, related to revenue recognition from contracts with customers. In August 2015, the FASB delayed the effective date of this guidance by one year, resulting in it becoming effective for the Company on January 1, 2018. This guidance amends certain currently existing revenue recognition accounting guidance and allows for either retrospective application to all periods presented or a modified retrospective approach where the guidance would only be applied to existing contracts in effect at the adoption date and new contracts going forward. The Company expects the adoption of this guidance will not be material to its financial statements. Accounting for Leases In February 2016, the FASB issued accounting guidance, effective for the Company on January 1, 2019, related to the accounting for leases. This guidance will require lessees to recognize all leases on the Consolidated Balance Sheet as lease assets and lease liabilities, with lessor accounting being largely unchanged. This guidance also requires additional disclosures regarding leasing arrangements. The Company expects the adoption of this guidance will not be material to its financial statements. Financial Instruments – Credit Losses In June 2016, the FASB issued accounting guidance, effective for the Company no later than January 1, 2020, related to the impairment of financial instruments. This guidance changes existing impairment recognition to a model that is based on expected losses rather than incurred losses, which is intended to result in more timely recognition of credit losses. This guidance is also intended to reduce the complexity of current accounting guidance by decreasing the number of credit impairment models that entities use to account for debt instruments. The Company is currently evaluating the impact of this guidance on its financial statements.

Restrictions on Cash and Due fr

Restrictions on Cash and Due from Banks	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Restrictions on Cash and Due from Banks	NOTE 3 Restrictions on Cash and Due from Banks Banking regulators require bank subsidiaries to maintain minimum average reserve balances, either in the form of vault cash or reserve balances held with central banks or other financial institutions. The amount of required reserve balances were approximately $3.0 billion and $2.2 billion at December 31, 2016 and 2015, respectively, and primarily represent those required to be held at the Federal Reserve Bank. In addition to vault cash, the Company held balances at the Federal Reserve Bank and other financial institutions of $2.9 billion and $3.3 billion at December 31, 2016 and 2015, respectively, to meet these requirements. These balances are included in cash and due from banks on the Consolidated Balance Sheet.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Investment Securities	NOTE 4 Investment Securities The amortized cost, other-than-temporary impairment recorded in other comprehensive income (loss), gross unrealized holding gains and losses, and fair value of held-to-maturity and available-for-sale investment securities at December 31 were as follows: 2016 2015 Unrealized Losses Unrealized Losses (Dollars in Millions) Amortized Unrealized Other-than- (e) Other (f) Fair Value Amortized Unrealized Other-than- (e) Other (f) Fair Value Held-to-maturity (a) U.S. Treasury and agencies $ 5,246 $ 12 $ – $ (132 ) $ 5,126 $ 2,925 $ 14 $ – $ (20 ) $ 2,919 Mortgage-backed securities Residential Agency 37,706 85 – (529 ) 37,262 40,619 175 – (273 ) 40,521 Non-agency non-prime (d) 1 – – – 1 1 – – – 1 Asset-backed securities Collateralized debt obligations/Collateralized loan obligations – 5 – – 5 – 6 – – 6 Other 8 3 – – 11 10 3 – – 13 Obligations of state and political subdivisions 6 1 – – 7 8 1 – (1 ) 8 Obligations of foreign governments 9 – – – 9 9 – – – 9 Other debt securities 15 – – (1 ) 14 18 – – (2 ) 16 Total held-to-maturity $ 42,991 $ 106 $ – $ (662 ) $ 42,435 $ 43,590 $ 199 $ – $ (296 ) $ 43,493 Available-for-sale (b) U.S. Treasury and agencies $ 17,314 $ 11 $ – $ (198 ) $ 17,127 $ 4,611 $ 12 $ – $ (27 ) $ 4,596 Mortgage-backed securities Residential Agency 43,558 225 – (645 ) 43,138 50,056 384 – (364 ) 50,076 Non-agency Prime (c) 240 6 (3 ) (1 ) 242 316 6 (3 ) (1 ) 318 Non-prime (d) 178 20 (3 ) – 195 221 20 (1 ) – 240 Commercial agency 15 – – – 15 52 – – – 52 Asset-backed securities Collateralized debt obligations/Collateralized loan obligations – – – – – 16 3 – – 19 Other 475 8 – – 483 532 9 – – 541 Obligations of state and political subdivisions 5,167 55 – (183 ) 5,039 5,149 169 – (2 ) 5,316 Corporate debt securities 11 – – (2 ) 9 677 3 – (70 ) 610 Perpetual preferred securities – – – – – 153 20 – (12 ) 161 Other investments 27 9 – – 36 34 34 – – 68 Total available-for-sale $ 66,985 $ 334 $ (6 ) $ (1,029 ) $ 66,284 $ 61,817 $ 660 $ (4 ) $ (476 ) $ 61,997 (a) Held-to-maturity investment securities are carried at historical cost or at fair value at the time of transfer from the available-for-sale to held-to-maturity category, adjusted for amortization of premiums and accretion of discounts and credit-related other-than-temporary impairment. (b) Available-for-sale investment securities are carried at fair value with unrealized net gains or losses reported within accumulated other comprehensive income (loss) in shareholders’ equity. (c) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). When the Company determines the designation, prime securities typically have a weighted-average credit score of 725 or higher and a loan-to-value of 80 percent or lower; however, other pool characteristics may result in designations that deviate from these credit score and loan-to-value thresholds. (d) Includes all securities not meeting the conditions to be designated as prime. (e) Represents impairment not related to credit for those investment securities that have been determined to be other-than-temporarily impaired. (f) Represents unrealized losses on investment securities that have not been determined to be other-than-temporarily impaired. The weighted-average maturity of the available-for-sale investment securities was 5.1 years at December 31, 2016, compared with 4.7 years at December 31, 2015. The corresponding weighted-average yields were 2.06 percent and 2.21 percent, respectively. The weighted-average maturity of the held-to-maturity investment securities was 4.6 years at December 31, 2016, and 4.2 years at December 31, 2015. The corresponding weighted-average yields were 1.93 percent and 1.92 percent, respectively. For amortized cost, fair value and yield by maturity date of held-to-maturity and available-for-sale investment securities outstanding at December 31, 2016, refer to Table 13 included in Management’s Discussion and Analysis, which is incorporated by reference into these Notes to Consolidated Financial Statements. Investment securities with a fair value of $11.3 billion at December 31, 2016, and $13.1 billion at December 31, 2015, were pledged to secure public, private and trust deposits, repurchase agreements and for other purposes required by contractual obligation or law. Included in these amounts were securities where the Company and certain counterparties have agreements granting the counterparties the right to sell or pledge the securities. Investment securities securing these types of arrangements had a fair value of $755 million at December 31, 2016, and $1.0 billion at December 31, 2015. The following table provides information about the amount of interest income from taxable and non-taxable investment securities: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Taxable $ 1,878 $ 1,778 $ 1,634 Non-taxable 200 223 232 Total interest income from investment securities $ 2,078 $ 2,001 $ 1,866 The following table provides information about the amount of gross gains and losses realized through the sales of available-for-sale investment securities: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Realized gains $ 93 $ 7 $ 11 Realized losses (66 ) (6 ) – Net realized gains (losses) $ 27 $ 1 $ 11 Income tax (benefit) on net realized gains (losses) $ 10 $ – $ 4 The Company conducts a regular assessment of its investment securities with unrealized losses to determine whether investment securities are other-than-temporarily impaired considering, among other factors, the nature of the investment securities, the credit ratings or financial condition of the issuer, the extent and duration of the unrealized loss, expected cash flows of underlying collateral, the existence of any government or agency guarantees, market conditions and whether the Company intends to sell or it is more likely than not the Company will be required to sell the investment securities. The Company determines other-than-temporary impairment recorded in earnings for debt securities not intended to be sold by estimating the future cash flows of each individual investment security, using market information where available, and discounting the cash flows at the original effective rate of the investment security. Other-than-temporary impairment recorded in other comprehensive income (loss) is measured as the difference between that discounted amount and the fair value of each investment security. The total amount of other-than-temporary impairment recorded was immaterial for the years ended December 31, 2016, 2015 and 2014. Changes in the credit losses on debt securities are summarized as follows: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 84 $ 101 $ 116 Additions to Credit Losses Due to Other-than-temporary Impairments Decreases in expected cash flows on securities for which other-than-temporary impairment was previously recognized 3 1 3 Total other-than-temporary impairment on debt securities 3 1 3 Other Changes in Credit Losses Increases in expected cash flows (2 ) (3 ) (5 ) Realized losses (a) (10 ) (15 ) (13 ) Balance at end of period $ 75 $ 84 $ 101 (a) Primarily represents principal losses allocated to mortgage and asset-backed securities in the Company’s portfolio under the terms of the securitization transaction documents. At December 31, 2016, certain investment securities had a fair value below amortized cost. The following table shows the gross unrealized losses and fair value of the Company’s investment securities with unrealized losses, aggregated by investment category and length of time the individual investment securities have been in continuous unrealized loss positions, at December 31, 2016: Less Than 12 Months 12 Months or Greater Total (Dollars in Millions) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Held-to-maturity U.S. Treasury and agencies $ 3,662 $ (132 ) $ – $ – $ 3,662 $ (132 ) Residential agency mortgage-backed securities 26,937 (462 ) 2,132 (67 ) 29,069 (529 ) Other asset-backed securities – – 5 – 5 – Other debt securities 15 (1 ) – – 15 (1 ) Total held-to-maturity $ 30,614 $ (595 ) $ 2,137 $ (67 ) $ 32,751 $ (662 ) Available-for-sale U.S. Treasury and agencies $ 14,490 $ (198 ) $ – $ – $ 14,490 $ (198 ) Residential mortgage-backed securities Agency 30,601 (552 ) 3,149 (93 ) 33,750 (645 ) Non-agency (a) Prime (b) 11 – 93 (4 ) 104 (4 ) Non-prime (c) 18 (1 ) 12 (2 ) 30 (3 ) Commercial agency 10 – – – 10 – Other asset-backed securities – – 2 – 2 – Obligations of state and political subdivisions 2,272 (183 ) 3 – 2,275 (183 ) Corporate debt securities – – 9 (2 ) 9 (2 ) Other investments 1 – – – 1 – Total available-for-sale $ 47,403 $ (934 ) $ 3,268 $ (101 ) $ 50,671 $ (1,035 ) (a) The Company had $7 million of unrealized losses on residential non-agency mortgage-backed securities. Credit-related other-than-temporary impairment on these securities may occur if there is further deterioration in the underlying collateral pool performance. Borrower defaults may increase if economic conditions worsen. Additionally, deterioration in home prices may increase the severity of projected losses. (b) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (c) Includes all securities not meeting the conditions to be designated as prime. The Company does not consider these unrealized losses to be credit-related. These unrealized losses primarily relate to changes in interest rates and market spreads subsequent to purchase. A substantial portion of investment securities that have unrealized losses are either U.S. Treasury and agencies, agency mortgage-backed or state and political securities. In general, the issuers of the investment securities are contractually prohibited from prepayment at less than par, and the Company did not pay significant purchase premiums for these investment securities. At December 31, 2016, the Company had no plans to sell investment securities with unrealized losses, and believes it is more likely than not it would not be required to sell such investment securities before recovery of their amortized cost.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loans and Allowance for Credit Losses	NOTE 5 Loans and Allowance for Credit Losses The composition of the loan portfolio at December 31, disaggregated by class and underlying specific portfolio type, was as follows: (Dollars in Millions) 2016 2015 Commercial Commercial $ 87,928 $ 83,116 Lease financing 5,458 5,286 Total commercial 93,386 88,402 Commercial Real Estate Commercial mortgages 31,592 31,773 Construction and development 11,506 10,364 Total commercial real estate 43,098 42,137 Residential Mortgages Residential mortgages 43,632 40,425 Home equity loans, first liens 13,642 13,071 Total residential mortgages 57,274 53,496 Credit Card 21,749 21,012 Other Retail Retail leasing 6,316 5,232 Home equity and second mortgages 16,369 16,384 Revolving credit 3,282 3,354 Installment 8,087 7,030 Automobile 17,571 16,587 Student 2,239 2,619 Total other retail 53,864 51,206 Total loans, excluding covered loans 269,371 256,253 Covered Loans 3,836 4,596 Total loans $ 273,207 $ 260,849 The Company had loans of $84.5 billion at December 31, 2016, and $78.1 billion at December 31, 2015, pledged at the Federal Home Loan Bank, and loans of $66.5 billion at December 31, 2016, and $63.4 billion at December 31, 2015, pledged at the Federal Reserve Bank. The majority of the Company’s loans are to borrowers in the states in which it has Consumer and Small Business Banking offices. Collateral for commercial loans may include marketable securities, accounts receivable, inventory, equipment and real estate. For details of the Company’s commercial portfolio by industry group and geography as of December 31, 2016 and 2015, see Table 7 included in Management’s Discussion and Analysis which is incorporated by reference into these Notes to Consolidated Financial Statements. For detail of the Company’s commercial real estate portfolio by property type and geography as of December 31, 2016 and 2015, see Table 8 included in Management’s Discussion and Analysis which is incorporated by reference into these Notes to Consolidated Financial Statements. Collateral for such loans may include the related property, marketable securities, accounts receivable, inventory and equipment. Originated loans are reported at the principal amount outstanding, net of unearned interest and deferred fees and costs. Net unearned interest and deferred fees and costs amounted to $672 million at December 31, 2016, and $550 million at December 31, 2015. All purchased loans and related indemnification assets are recorded at fair value at the date of purchase. The Company evaluates purchased loans for impairment at the date of purchase in accordance with applicable authoritative accounting guidance. Purchased loans with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are considered “purchased impaired loans.” All other purchased loans are considered “purchased nonimpaired loans.” Changes in the accretable balance for purchased impaired loans for the years ended December 31, were as follows: (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 957 $ 1,309 $ 1,655 Accretion (392 ) (382 ) (441 ) Disposals (110 ) (132 ) (131 ) Reclassifications from nonaccretable difference (a) 244 163 229 Other (1 ) (1 ) (3 ) Balance at end of period $ 698 $ 957 $ 1,309 (a) Primarily relates to changes in expected credit performance. Allowance for Credit Losses The allowance for credit losses is established for probable and estimable losses incurred in the Company’s loan and lease portfolio, including unfunded credit commitments, and includes certain amounts that do not represent loss exposure to the Company because those losses are recoverable under loss sharing agreements with the FDIC. Activity in the allowance for credit losses by portfolio class was as follows: (Dollars in Millions) Commercial Commercial Residential Credit Other Total Loans, Covered Loans Total Balance at December 31, 2015 $ 1,287 $ 724 $ 631 $ 883 $ 743 $ 4,268 $ 38 $ 4,306 Add Provision for credit losses 488 75 (61 ) 728 95 1,325 (1 ) 1,324 Deduct Loans charged off 417 22 85 759 332 1,615 – 1,615 Less recoveries of loans charged off (92 ) (35 ) (25 ) (83 ) (111 ) (346 ) – (346 ) Net loans charged off 325 (13 ) 60 676 221 1,269 – 1,269 Other changes (a) – – – (1 ) – (1 ) (3 ) (4 ) Balance at December 31, 2016 $ 1,450 $ 812 $ 510 $ 934 $ 617 $ 4,323 $ 34 $ 4,357 Balance at December 31, 2014 $ 1,146 $ 726 $ 787 $ 880 $ 771 $ 4,310 $ 65 $ 4,375 Add Provision for credit losses 361 (30 ) (47 ) 654 193 1,131 1 1,132 Deduct Loans charged off 314 22 135 726 319 1,516 – 1,516 Less recoveries of loans charged off (95 ) (50 ) (26 ) (75 ) (98 ) (344 ) – (344 ) Net loans charged off 219 (28 ) 109 651 221 1,172 – 1,172 Other changes (a) (1 ) – – – – (1 ) (28 ) (29 ) Balance at December 31, 2015 $ 1,287 $ 724 $ 631 $ 883 $ 743 $ 4,268 $ 38 $ 4,306 Balance at December 31, 2013 $ 1,075 $ 776 $ 875 $ 884 $ 781 $ 4,391 $ 146 $ 4,537 Add Provision for credit losses 266 (63 ) 107 657 278 1,245 (16 ) 1,229 Deduct Loans charged off 305 36 216 725 384 1,666 13 1,679 Less recoveries of loans charged off (110 ) (49 ) (21 ) (67 ) (96 ) (343 ) (2 ) (345 ) Net loans charged off 195 (13 ) 195 658 288 1,323 11 1,334 Other changes (a) – – – (3 ) – (3 ) (54 ) (57 ) Balance at December 31, 2014 $ 1,146 $ 726 $ 787 $ 880 $ 771 $ 4,310 $ 65 $ 4,375 (a) Includes net changes in credit losses to be reimbursed by the FDIC and reductions in the allowance for covered loans where the reversal of a previously recorded allowance was offset by an associated decrease in the indemnification asset, and the impact of any loan sales. Additional detail of the allowance for credit losses by portfolio class was as follows: (Dollars in Millions) Commercial Commercial Residential Credit Other Total Loans, Covered Total Allowance Balance at December 31, 2016 Related to Loans individually evaluated for impairment (a) $ 50 $ 4 $ – $ – $ – $ 54 $ – $ 54 TDRs collectively evaluated for impairment 12 4 180 65 20 281 1 282 Other loans collectively evaluated for impairment 1,388 798 330 869 597 3,982 – 3,982 Loans acquired with deteriorated credit quality – 6 – – – 6 33 39 Total allowance for credit losses $ 1,450 $ 812 $ 510 $ 934 $ 617 $ 4,323 $ 34 $ 4,357 Allowance Balance at December 31, 2015 Related to Loans individually evaluated for impairment (a) $ 11 $ 2 $ – $ – $ – $ 13 $ – $ 13 TDRs collectively evaluated for impairment 10 7 236 57 33 343 2 345 Other loans collectively evaluated for impairment 1,266 703 395 826 710 3,900 – 3,900 Loans acquired with deteriorated credit quality – 12 – – – 12 36 48 Total allowance for credit losses $ 1,287 $ 724 $ 631 $ 883 $ 743 $ 4,268 $ 38 $ 4,306 (a) Represents the allowance for credit losses related to loans greater than $5 million classified as nonperforming or TDRs. Additional detail of loan balances by portfolio class was as follows: (Dollars in Millions) Commercial Commercial Residential Credit Other Total Loans, Covered (b) Total Loans December 31, 2016 Loans individually evaluated for impairment (a) $ 623 $ 70 $ – $ – $ – $ 693 $ – $ 693 TDRs collectively evaluated for impairment 145 146 3,678 222 173 4,364 35 4,399 Other loans collectively evaluated for impairment 92,611 42,751 53,595 21,527 53,691 264,175 1,553 265,728 Loans acquired with deteriorated credit quality 7 131 1 – – 139 2,248 2,387 Total loans $ 93,386 $ 43,098 $ 57,274 $ 21,749 $ 53,864 $ 269,371 $ 3,836 $ 273,207 December 31, 2015 Loans individually evaluated for impairment (a) $ 336 $ 41 $ 13 $ – $ – $ 390 $ – $ 390 TDRs collectively evaluated for impairment 138 235 4,241 210 211 5,035 35 5,070 Other loans collectively evaluated for impairment 87,927 41,566 49,241 20,802 50,995 250,531 2,059 252,590 Loans acquired with deteriorated credit quality 1 295 1 – – 297 2,502 2,799 Total loans $ 88,402 $ 42,137 $ 53,496 $ 21,012 $ 51,206 $ 256,253 $ 4,596 $ 260,849 (a) Represents loans greater than $5 million classified as nonperforming or TDRs. (b) Includes expected reimbursements from the FDIC under loss sharing agreements. Credit Quality The credit quality of the Company’s loan portfolios is assessed as a function of net credit losses, levels of nonperforming assets and delinquencies, and credit quality ratings as defined by the Company. These credit quality ratings are an important part of the Company’s overall credit risk management and evaluation of its allowance for credit losses. The following table provides a summary of loans by portfolio class, including the delinquency status of those that continue to accrue interest, and those that are nonperforming: Accruing (Dollars in Millions) Current 30-89 Days 90 Days or Nonperforming Total December 31, 2016 Commercial $ 92,588 $ 263 $ 52 $ 483 $ 93,386 Commercial real estate 42,922 44 8 124 43,098 Residential mortgages (a) 56,372 151 156 595 57,274 Credit card 21,209 284 253 3 21,749 Other retail 53,340 284 83 157 53,864 Total loans, excluding covered loans 266,431 1,026 552 1,362 269,371 Covered loans 3,563 55 212 6 3,836 Total loans $ 269,994 $ 1,081 $ 764 $ 1,368 $ 273,207 December 31, 2015 Commercial $ 87,863 $ 317 $ 48 $ 174 $ 88,402 Commercial real estate 41,907 89 14 127 42,137 Residential mortgages (a) 52,438 170 176 712 53,496 Credit card 20,532 243 228 9 21,012 Other retail 50,745 224 75 162 51,206 Total loans, excluding covered loans 253,485 1,043 541 1,184 256,253 Covered loans 4,236 62 290 8 4,596 Total loans $ 257,721 $ 1,105 $ 831 $ 1,192 $ 260,849 (a) At December 31, 2016, $273 million of loans 30–89 days past due and $2.5 billion of loans 90 days or more past due purchased from Government National Mortgage Association (“GNMA”) mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs, were classified as current, compared with $320 million and $2.9 billion at December 31, 2015, respectively. Total nonperforming assets include nonaccrual loans, restructured loans not performing in accordance with modified terms, other real estate and other nonperforming assets owned by the Company. For details of the Company’s nonperforming assets as of December 31, 2016 and 2015, see Table 16 included in Management’s Discussion and Analysis which is incorporated by reference into these Notes to Consolidated Financial Statements. At December 31, 2016, the amount of foreclosed residential real estate held by the Company, and included in OREO, was $201 million ($175 million excluding covered assets), compared with $282 million ($250 million excluding covered assets) at December 31, 2015. This excludes $373 million and $535 million at December 31, 2016 and 2015, respectively, of foreclosed residential real estate related to mortgage loans whose payments are primarily insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs. In addition, the amount of residential mortgage loans secured by residential real estate in the process of foreclosure at December 31, 2016 and 2015, was $2.1 billion and $2.6 billion, respectively, of which $1.6 billion and $1.9 billion, respectively, related to loans purchased from Government National Mortgage Association (“GNMA”) mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs. The following table provides a summary of loans by portfolio class and the Company’s internal credit quality rating: Criticized (Dollars in Millions) Pass Special Classified (a) Total Total December 31, 2016 Commercial (b) $ 89,739 $ 1,721 $ 1,926 $ 3,647 $ 93,386 Commercial real estate 41,634 663 801 1,464 43,098 Residential mortgages (c) 56,457 10 807 817 57,274 Credit card 21,493 – 256 256 21,749 Other retail 53,576 6 282 288 53,864 Total loans, excluding covered loans 262,899 2,400 4,072 6,472 269,371 Covered loans 3,766 – 70 70 3,836 Total loans $ 266,665 $ 2,400 $ 4,142 $ 6,542 $ 273,207 Total outstanding commitments $ 562,704 $ 4,920 $ 5,629 $ 10,549 $ 573,253 December 31, 2015 Commercial (b) $ 85,206 $ 1,629 $ 1,567 $ 3,196 $ 88,402 Commercial real estate 41,079 365 693 1,058 42,137 Residential mortgages (c) 52,548 2 946 948 53,496 Credit card 20,775 – 237 237 21,012 Other retail 50,899 6 301 307 51,206 Total loans, excluding covered loans 250,507 2,002 3,744 5,746 256,253 Covered loans 4,507 – 89 89 4,596 Total loans $ 255,014 $ 2,002 $ 3,833 $ 5,835 $ 260,849 Total outstanding commitments $ 539,614 $ 3,945 $ 4,845 $ 8,790 $ 548,404 (a) Classified rating on consumer loans primarily based on delinquency status. (b) At December 31, 2016, $1.2 billion of energy loans ($2.8 billion of total outstanding commitments) had a special mention or classified rating, compared with $1.1 billion of energy loans ($1.9 billion of total outstanding commitments) at December 31, 2015. (c) At December 31, 2016, $2.5 billion of GNMA loans 90 days or more past due and $1.6 billion of restructured GNMA loans whose repayments are insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs were classified with a pass rating, compared with $2.9 billion and $1.9 billion at December 31, 2015, respectively. For all loan classes, a loan is considered to be impaired when, based on current events or information, it is probable the Company will be unable to collect all amounts due per the contractual terms of the loan agreement. A summary of impaired loans, which include all nonaccrual and TDR loans, by portfolio class was as follows: (Dollars in Millions) Period-end (a) Unpaid Valuation Commitments December 31, 2016 Commercial $ 849 $ 1,364 $ 68 $ 284 Commercial real estate 293 697 10 – Residential mortgages 2,274 2,847 153 – Credit card 222 222 64 – Other retail 281 456 22 4 Total loans, excluding GNMA and covered loans 3,919 5,586 317 288 Loans purchased from GNMA mortgage pools 1,574 1,574 28 – Covered loans 36 42 1 1 Total $ 5,529 $ 7,202 $ 346 $ 289 December 31, 2015 Commercial $ 520 $ 1,110 $ 25 $ 154 Commercial real estate 336 847 11 1 Residential mortgages 2,575 3,248 199 – Credit card 210 210 57 – Other retail 309 503 35 4 Total loans, excluding GNMA and covered loans 3,950 5,918 327 159 Loans purchased from GNMA mortgage pools 1,913 1,913 40 – Covered loans 39 48 2 1 Total $ 5,902 $ 7,879 $ 369 $ 160 (a) Substantially all loans classified as impaired at December 31, 2016 and 2015, had an associated allowance for credit losses. The total amount of interest income recognized during 2016 on loans classified as impaired at December 31, 2016, excluding those acquired with deteriorated credit quality, was $237 million, compared to what would have been recognized at the original contractual terms of the loans of $308 million. Additional information on impaired loans for the years ended December 31 follows: (Dollars in Millions) Average Interest 2016 Commercial $ 799 $ 9 Commercial real estate 324 15 Residential mortgages 2,422 124 Credit card 214 4 Other retail 293 13 Total loans, excluding GNMA and covered loans 4,052 165 Loans purchased from GNMA mortgage pools 1,620 71 Covered loans 38 1 Total $ 5,710 $ 237 2015 Commercial $ 383 $ 13 Commercial real estate 433 16 Residential mortgages 2,666 131 Credit card 221 4 Other retail 336 14 Total loans, excluding GNMA and covered loans 4,039 178 Loans purchased from GNMA mortgage pools 2,079 95 Covered loans 42 1 Total $ 6,160 $ 274 2014 Commercial $ 414 $ 9 Commercial real estate 592 26 Residential mortgages 2,742 140 Credit card 273 9 Other retail 377 17 Total loans, excluding GNMA and covered loans 4,398 201 Loans purchased from GNMA mortgage pools 2,609 124 Covered loans 334 15 Total $ 7,341 $ 340 Troubled Debt Restructurings In certain circumstances, the Company may modify the terms of a loan to maximize the collection of amounts due when a borrower is experiencing financial difficulties or is expected to experience difficulties in the near-term. The following table provides a summary of loans modified as TDRs for the years ended December 31, by portfolio class: (Dollars in Millions) Number Pre-Modification Balance Post-Modification Balance 2016 Commercial 2,352 $ 844 $ 699 Commercial real estate 102 259 256 Residential mortgages 1,576 168 178 Credit card 31,394 151 153 Other retail 2,235 41 40 Total loans, excluding GNMA and covered loans 37,659 1,463 1,326 Loans purchased from GNMA mortgage pools 11,260 1,274 1,267 Covered loans 39 6 7 Total loans 48,958 $ 2,743 $ 2,600 2015 Commercial 1,607 $ 385 $ 396 Commercial real estate 108 78 76 Residential mortgages 2,080 260 258 Credit card 26,772 133 134 Other retail 2,530 54 54 Total loans, excluding GNMA and covered loans 33,097 910 918 Loans purchased from GNMA mortgage pools 8,199 864 862 Covered loans 16 5 5 Total loans 41,312 $ 1,779 $ 1,785 2014 Commercial 2,027 $ 238 $ 203 Commercial real estate 78 80 71 Residential mortgages 2,089 271 274 Credit card 26,511 144 145 Other retail 2,833 61 61 Total loans, excluding GNMA and covered loans 33,538 794 754 Loans purchased from GNMA mortgage pools 8,961 1,000 1,013 Covered loans 43 15 14 Total loans 42,542 $ 1,809 $ 1,781 Residential mortgages, home equity and second mortgages, and loans purchased from GNMA mortgage pools in the table above include trial period arrangements offered to customers during the periods presented. The post-modification balances for these loans reflect the current outstanding balance until a permanent modification is made. In addition, the post-modification balances typically include capitalization of unpaid accrued interest and/or fees under the various modification programs. For those loans modified as TDRs during the fourth quarter of 2016, at December 31, 2016, 106 residential mortgages, 6 home equity and second mortgage loans and 1,366 loans purchased from GNMA mortgage pools with outstanding balances of $11 million, less than $1 million and $179 million, respectively, were in a trial period and have estimated post-modification balances of $13 million, less than $1 million and $175 million, respectively, assuming permanent modification occurs at the end of the trial period. The following table provides a summary of TDR loans that defaulted (fully or partially charged-off or became 90 days or more past due) for the years ended December 31, that were modified as TDRs within 12 months previous to default: (Dollars in Millions) Number Amount 2016 Commercial 531 $ 24 Commercial real estate 27 12 Residential mortgages 132 17 Credit card 6,827 30 Other retail 434 9 Total loans, excluding GNMA and covered loans 7,951 92 Loans purchased from GNMA mortgage pools 202 25 Covered loans 4 1 Total loans 8,157 $ 118 2015 Commercial 494 $ 21 Commercial real estate 18 8 Residential mortgages 273 36 Credit card 6,286 29 Other retail 636 12 Total loans, excluding GNMA and covered loans 7,707 106 Loans purchased from GNMA mortgage pools 598 75 Covered loans 5 1 Total loans 8,310 $ 182 2014 Commercial 629 $ 44 Commercial real estate 22 12 Residential mortgages 611 86 Credit card 6,335 33 Other retail 845 24 Total loans, excluding GNMA and covered loans 8,442 199 Loans purchased from GNMA mortgage pools 876 102 Covered loans 14 5 Total loans 9,332 $ 306 In addition to the defaults in the table above, the Company had a total of 1,697 residential mortgage loans, home equity and second mortgage loans and loans purchased from GNMA mortgage pools for the year ended December 31, 2016, where borrowers did not successfully complete the trial period arrangement and, therefore, are no longer eligible for a permanent modification under the applicable modification program. These loans had aggregate outstanding balances of $230 million for year ended December 31, 2016. Covered Assets Covered assets represent loans and other assets acquired from the FDIC, subject to loss sharing agreements, and include expected reimbursements from the FDIC. The carrying amount of the covered assets at December 31, consisted of purchased impaired loans, purchased nonimpaired loans and other assets as shown in the following table: 2016 2015 (Dollars in Millions) Purchased Purchased Other Total Purchased Purchased Other Total Residential mortgage loans $ 2,248 $ 506 $ – $ 2,754 $ 2,502 $ 615 $ – $ 3,117 Other retail loans – 278 – 278 – 447 – 447 Losses reimbursable by the FDIC (a) – – 381 381 – – 517 517 Unamortized changes in FDIC asset (b) – – 423 423 – – 515 515 Covered loans 2,248 784 804 3,836 2,502 1,062 1,032 4,596 Foreclosed real estate – – 26 26 – – 32 32 Total covered assets $ 2,248 $ 784 $ 830 $ 3,862 $ 2,502 $ 1,062 $ 1,064 $ 4,628 (a) Relates to loss sharing agreements with remaining terms up to three years. (b) Represents decreases in expected reimbursements by the FDIC as a result of decreases in expected losses on the covered loans. These amounts are amortized as a reduction in interest income on covered loans over the shorter of the expected life of the respective covered loans or the remaining contractual term of the indemnification agreements. Interest income is recognized on purchased impaired loans through accretion of the difference between the carrying amount of those loans and their expected cash flows. The initial determination of the fair value of the purchased loans includes the impact of expected credit losses and, therefore, no allowance for credit losses is recorded at the purchase date. To the extent credit deterioration occurs after the date of acquisition, the Company records an allowance for credit losses.

Leases

Leases	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Leases	NOTE 6 Leases The components of the net investment in sales-type and direct financing leases at December 31 were as follows: (Dollars in Millions) 2016 2015 Aggregate future minimum lease payments to be received $ 11,257 $ 10,257 Unguaranteed residual values accruing to the lessor’s benefit 1,175 766 Unearned income (1,023 ) (887 ) Initial direct costs 237 204 Total net investment in sales-type and direct financing leases (a) $ 11,646 $ 10,340 (a) The accumulated allowance for uncollectible minimum lease payments was $83 million and $66 million at December 31, 2016 and 2015, respectively. The minimum future lease payments to be received from sales-type and direct financing leases were as follows at December 31, 2016: (Dollars in Millions) 2017 $ 3,836 2018 2,884 2019 2,641 2020 1,116 2021 375 Thereafter 405

Accounting for Transfers and Se

Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities	NOTE 7 Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities The Company transfers financial assets in the normal course of business. The majority of the Company’s financial asset transfers are residential mortgage loan sales primarily to government-sponsored enterprises (“GSEs”), transfers of tax-advantaged investments, commercial loan sales through participation agreements, and other individual or portfolio loan and securities sales. In accordance with the accounting guidance for asset transfers, the Company considers any ongoing involvement with transferred assets in determining whether the assets can be derecognized from the balance sheet. Guarantees provided to certain third parties in connection with the transfer of assets are further discussed in Note 22. For loans sold under participation agreements, the Company also considers whether the terms of the loan participation agreement meet the accounting definition of a participating interest. With the exception of servicing and certain performance-based guarantees, the Company’s continuing involvement with financial assets sold is minimal and generally limited to market customary representation and warranty clauses. Any gain or loss on sale depends on the previous carrying amount of the transferred financial assets, the consideration received, and any liabilities incurred in exchange for the transferred assets. Upon transfer, any servicing assets and other interests that continue to be held by the Company are initially recognized at fair value. For further information on MSRs, refer to Note 9. On a limited basis, the Company may acquire and package high-grade corporate bonds for select corporate customers, in which the Company generally has no continuing involvement with these transactions. Additionally, the Company is an authorized GNMA issuer and issues GNMA securities on a regular basis. The Company has no other asset securitizations or similar asset-backed financing arrangements that are off-balance sheet. Effective January 1, 2016, the Company adopted accounting guidance, issued by the FASB in February 2015, relating to the analysis required by organizations to evaluate whether they should consolidate certain legal entities. The adoption of this guidance did not have a material impact on the Company’s financial statements, and specifically excludes registered money market funds from the consolidation analysis. The Company provides financial support primarily through the use of waivers of management fees associated with various registered money market funds it manages, which are excluded from the consolidation analysis. The Company provided $45 million, $112 million and $119 million of support to the funds during the years ended December 31, 2016, 2015 and 2014, respectively. The Company is involved in various entities that are considered to be VIEs. The Company’s investments in VIEs are primarily related to investments promoting affordable housing, community development and renewable energy sources. Some of these tax-advantaged investments support the Company’s regulatory compliance with the Community Reinvestment Act. The Company’s investments in these entities generate a return primarily through the realization of federal and state income tax credits, and other tax benefits, such as tax deductions from operating losses of the investments, over specified time periods. These tax credits are recognized as a reduction of tax expense or, for investments qualifying as investment tax credits, as a reduction to the related investment asset. The Company recognized federal and state income tax credits related to its affordable housing and other tax-advantaged investments in tax expense of $698 million, $733 million and $773 million for the years ended December 31, 2016, 2015 and 2014, respectively. The Company also recognized $1.4 billion, $1.2 billion and $937 million of investment tax credits for the years ended December 31, 2016, 2015 and 2014, respectively. The Company recognized $672 million, $698 million and $771 million of expenses related to all of these investments for the years ended December 31, 2016, 2015 and 2014, of which $251 million, $261 million and $258 million, respectively, was included in tax expense and the remainder was included in noninterest expense. The Company is not required to consolidate VIEs in which it has concluded it does not have a controlling financial interest, and thus is not the primary beneficiary. In such cases, the Company does not have both the power to direct the entities’ most significant activities and the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIEs. The Company’s investments in these unconsolidated VIEs are carried in other assets on the Consolidated Balance Sheet. The Company’s unfunded capital and other commitments related to these unconsolidated VIEs are generally carried in other liabilities on the Consolidated Balance Sheet. The Company’s maximum exposure to loss from these unconsolidated VIEs include the investment recorded on the Company’s Consolidated Balance Sheet, net of unfunded capital commitments, and previously recorded tax credits which remain subject to recapture by taxing authorities based on compliance features required to be met at the project level. While the Company believes potential losses from these investments are remote, the maximum exposure was determined by assuming a scenario where the community-based business and housing projects completely fail and do not meet certain government compliance requirements resulting in recapture of the related tax credits. The following table provides a summary of investments in community development and tax-advantaged VIEs that the Company has not consolidated: At December 31 (Dollars in Millions) 2016 2015 Investment carrying amount $ 5,009 $ 5,257 Unfunded capital and other commitments 2,477 2,499 Maximum exposure to loss 10,373 9,436 The Company also has noncontrolling financial investments in private investment funds and partnerships considered to be VIEs, which are not consolidated. The Company’s recorded investment in these entities, carried in other assets on the Consolidated Balance Sheet, was approximately $28 million at December 31, 2016, compared with $32 million at December 31, 2015. The maximum exposure to loss related to these VIEs was $50 million at December 31, 2016 and $47 million at December 31, 2015, representing the Company’s investment balance and its unfunded commitments to invest additional amounts. The Company’s individual net investments in unconsolidated VIEs, which exclude any unfunded capital commitments, ranged from less than $1 million to $40 million at December 31, 2016, compared with less than $1 million to $46 million at December 31, 2015. The Company is required to consolidate VIEs in which it has concluded it has a controlling financial interest. The Company sponsors entities to which it transfers its interests in tax-advantaged investments to third parties. At December 31, 2016, approximately $3.5 billion of the Company’s assets and $2.6 billion of its liabilities included on the Consolidated Balance Sheet were related to community development and tax-advantaged investment VIEs which the Company has consolidated, primarily related to these transfers. These amounts compared to $3.0 billion and $2.2 billion, respectively, at December 31, 2015. The majority of the assets of these consolidated VIEs are reported in other assets, and the liabilities are reported in long-term debt and other liabilities. The assets of a particular VIE are the primary source of funds to settle its obligations. The creditors of the VIEs do not have recourse to the general credit of the Company. The Company’s exposure to the consolidated VIEs is generally limited to the carrying value of its variable interests plus any related tax credits previously recognized or transferred to others with a guarantee. The Company also sponsors a conduit to which it previously transferred high-grade investment securities. The Company consolidates the conduit because of its ability to manage the activities of the conduit. At December 31, 2016, $24 million of the held-to-maturity investment securities on the Company’s Consolidated Balance Sheet were related to the conduit, compared with $28 million at December 31, 2015. In addition, the Company sponsors a municipal bond securities tender option bond program. The Company controls the activities of the program’s entities, is entitled to the residual returns and provides credit, liquidity and remarketing arrangements to the program. As a result, the Company has consolidated the program’s entities. At December 31, 2016, $1.1 billion of available-for-sale investment securities and $1.1 billion of short-term borrowings on the Consolidated Balance Sheet were related to the tender option bond program, compared with $2.3 billion of available-for-sale investment securities and $2.2 billion of short-term borrowings at December 31, 2015.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Premises and Equipment	NOTE 8 Premises and Equipment Premises and equipment at December 31 consisted of the following: (Dollars in Millions) 2016 2015 Land $ 516 $ 522 Buildings and improvements 3,383 3,348 Furniture, fixtures and equipment 2,798 2,721 Capitalized building and equipment leases 125 113 Construction in progress 29 19 6,851 6,723 Less accumulated depreciation and amortization (4,408 ) (4,210 ) Total $ 2,443 $ 2,513

Mortgage Servicing Rights

Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Mortgage Servicing Rights	NOTE 9 Mortgage Servicing Rights The Company serviced $232.6 billion of residential mortgage loans for others at December 31, 2016, and $231.8 billion at December 31, 2015, which include subserviced mortgages with no corresponding MSRs asset. The net impact included in mortgage banking revenue of fair value changes of MSRs due to changes in valuation assumptions and derivatives used to economically hedge MSRs were net gains of $7 million, $23 million and $241 million (of which $44 million related to excess servicing rights sold during 2014) for the years ended December 31, 2016, 2015 and 2014, respectively. Loan servicing and ancillary fees, not including valuation changes, included in mortgage banking revenue, were $750 million, $728 million and $732 million for the years ended December 31, 2016, 2015 and 2014, respectively. Changes in fair value of capitalized MSRs for the years ended December 31, are summarized as follows: (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 2,512 $ 2,338 $ 2,680 Rights purchased 43 29 5 Rights capitalized 524 632 382 Rights sold – – (141 ) Changes in fair value of MSRs Due to fluctuations in market interest rates (a) (55 ) (58 ) (276 ) Due to revised assumptions or models (b) 19 10 86 Other changes in fair value (c) (452 ) (439 ) (398 ) Balance at end of period $ 2,591 $ 2,512 $ 2,338 (a) Includes changes in MSR value associated with changes in market interest rates, including estimated prepayment rates and anticipated earnings on escrow deposits. (b) Includes changes in MSR value not caused by changes in market interest rates, such as changes in cost to service, ancillary income, and option adjusted spread or discount rate , as well as the impact of any model changes. 2014 includes a $44 million revaluation gain related to excess servicing rights sold. (c) Primarily represents changes due to realization of expected cash flows over time (decay). The estimated sensitivity to changes in interest rates of the fair value of the MSRs portfolio and the related derivative instruments as of December 31 follows: 2016 2015 (Dollars in Millions) Down Down Down Up Up Up Down Down Down Up Up Up MSR portfolio $ (476 ) $ (209 ) $ (98 ) $ 85 $ 159 $ 270 $ (598 ) $ (250 ) $ (114 ) $ 96 $ 176 $ 344 Derivative instrument hedges 375 180 88 (84 ) (165 ) (314 ) 475 226 107 (98 ) (192 ) (377 ) Net sensitivity $ (101 ) $ (29 ) $ (10 ) $ 1 $ (6 ) $ (44 ) $ (123 ) $ (24 ) $ (7 ) $ (2 ) $ (16 ) $ (33 ) The fair value of MSRs and their sensitivity to changes in interest rates is influenced by the mix of the servicing portfolio and characteristics of each segment of the portfolio. The Company’s servicing portfolio consists of the distinct portfolios of government-insured mortgages, conventional mortgages and Housing Finance Agency (“HFA”) mortgages. The servicing portfolios are predominantly comprised of fixed-rate agency loans with limited adjustable-rate or jumbo mortgage loans. The HFA division specializes in servicing loans made under state and local housing authority programs. These programs provide mortgages to low-income and moderate-income borrowers and are generally government-insured programs with a favorable rate subsidy, down payment and/or closing cost assistance. A summary of the Company’s MSRs and related characteristics by portfolio as of December 31 follows: 2016 2015 (Dollars in Millions) HFA Government Conventional (c) Total HFA Government Conventional (c) Total Servicing portfolio (a) $ 34,746 $ 37,530 $ 157,771 $ 230,047 $ 26,492 $ 40,350 $ 162,533 $ 229,375 Fair value $ 398 $ 422 $ 1,771 $ 2,591 $ 297 $ 443 $ 1,772 $ 2,512 Value (bps) (b) 115 112 112 113 112 110 109 110 Weighted-average servicing fees (bps) 36 34 27 30 36 34 27 29 Multiple (value/servicing fees) 3.19 3.29 4.15 3.77 3.11 3.24 4.04 3.79 Weighted-average note rate 4.37 % 3.95 % 4.02 % 4.06 % 4.46 % 4.08 % 4.09 % 4.13 % Weighted-average age (in years) 2.9 3.8 3.8 3.7 3.1 3.6 3.4 3.4 Weighted-average expected prepayment (constant prepayment rate) 9.4 % 11.3 % 9.8 % 10.0 % 12.8 % 13.9 % 10.4 % 11.3 % Weighted-average expected life (in years) 8.0 6.8 6.9 7.0 6.1 5.7 6.6 6.4 Weighted-average option adjusted spread or discount rate (d) 9.9 % 9.2 % 7.2 % 8.0 % 11.8 % 11.2 % 9.4 % 10.0 % (a) Represents principal balance of mortgages having corresponding MSR asset. (b) Value is calculated as fair value divided by the servicing portfolio. (c) Represents loans sold primarily to GSEs. (d) Option adjusted spread is the incremental spread added to the risk-free rate to reflect optionality and other risk inherent in the MSRs. Prior to December 31, 2016 the Company valued MSRs using a static discount rate.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	NOTE 10 Intangible Assets Intangible assets consisted of the following: At December 31 (Dollars in Millions) Estimated Life (a) Amortization Method (b) Balance 2016 2015 Goodwill (c ) $ 9,344 $ 9,361 Merchant processing contracts 7 years/8 years SL/AC 108 135 Core deposit benefits 22 years/5 years SL/AC 161 194 Mortgage servicing rights (c ) 2,591 2,512 Trust relationships 10 years/6 years SL/AC 59 75 Other identified intangibles 8 years/4 years SL/AC 384 434 Total $ 12,647 $ 12,711 (a) Estimated life represents the amortization period for assets subject to the straight line method and the weighted average or life of the underlying cash flows amortization period for intangibles subject to accelerated methods. If more than one amortization method is used for a category, the estimated life for each method is calculated and reported separately. (b) Amortization methods: SL = straight line method AC = accelerated methods generally based on cash flows (c) Goodwill is evaluated for impairment, but not amortized. Mortgage servicing rights are recorded at fair value, and are not amortized. Aggregate amortization expense consisted of the following: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Merchant processing contracts $ 28 $ 35 $ 50 Core deposit benefits 34 40 38 Trust relationships 16 21 27 Other identified intangibles 101 78 84 Total $ 179 $ 174 $ 199 The estimated amortization expense for the next five years is as follows: (Dollars in Millions) 2017 $ 171 2018 138 2019 109 2020 86 2021 65 The following table reflects the changes in the carrying value of goodwill for the years ended December 31, 2016, 2015 and 2014: (Dollars in Millions) Wholesale Banking and Consumer and Small Wealth Management and Payment Treasury and Consolidated Balance at December 31, 2013 $ 1,605 $ 3,514 $ 1,565 $ 2,521 $ – $ 9,205 Goodwill acquired 43 166 8 – – 217 Foreign exchange translation and other – – (3 ) (30 ) – (33 ) Balance at December 31, 2014 $ 1,648 $ 3,680 $ 1,570 $ 2,491 $ – $ 9,389 Foreign exchange translation and other (1 ) 1 (3 ) (25 ) – (28 ) Balance at December 31, 2015 $ 1,647 $ 3,681 $ 1,567 $ 2,466 $ – $ 9,361 Foreign exchange translation and other – – (1 ) (16 ) – (17 ) Balance at December 31, 2016 $ 1,647 $ 3,681 $ 1,566 $ 2,450 $ – $ 9,344

Deposits

Deposits	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Deposits	NOTE 11 Deposits The composition of deposits at December 31 was as follows: (Dollars in Millions) 2016 2015 Noninterest-bearing deposits $ 86,097 $ 83,766 Interest-bearing deposits Interest checking 66,298 59,169 Money market savings 109,947 86,159 Savings accounts 41,783 38,468 Time deposits 30,465 32,838 Total interest-bearing deposits 248,493 216,634 Total deposits $ 334,590 $ 300,400 The maturities of time deposits outstanding at December 31, 2016 were as follows: (Dollars in Millions) 2017 $ 23,428 2018 3,019 2019 1,601 2020 1,267 2021 1,147 Thereafter 3 Total $ 30,465

Short-Term Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Short-Term Borrowings	NOTE 12 Short-Term Borrowings (a) The following table is a summary of short-term borrowings for the last three years: 2016 2015 2014 (Dollars in Millions) Amount Rate Amount Rate Amount Rate At year-end Federal funds purchased $ 447 .30 % $ 647 .23 % $ 886 .12 % Securities sold under agreements to repurchase 801 .12 1,092 .02 948 .05 Commercial paper 10,010 .30 22,022 .21 22,197 .12 Other short-term borrowings 2,705 1.00 4,116 .69 5,862 .51 Total $ 13,963 .43 % $ 27,877 .27 % $ 29,893 .19 % Average for the year Federal funds purchased (b) $ 1,015 17.17 % $ 1,169 15.05 % $ 2,366 7.94 % Securities sold under agreements to repurchase 891 .18 973 .10 798 1.07 Commercial paper 14,827 .26 21,892 .12 21,227 .12 Other short-term borrowings 3,173 1.67 3,926 1.13 5,861 .78 Total (b) $ 19,906 1.34 % $ 27,960 .89 % $ 30,252 .88 % Maximum month-end balance Federal funds purchased $ 2,487 $ 1,868 $ 3,258 Securities sold under agreements to repurchase 1,177 1,124 948 Commercial paper 21,441 23,101 22,322 Other short-term borrowings 6,771 7,656 7,417 (a) Interest and rates are presented on a fully taxable-equivalent basis utilizing a tax rate of 35 percent. (b) Average federal funds purchased and total short-term borrowings rates include amounts paid by the Company to certain corporate card customers for paying outstanding noninterest-bearing corporate card balances within certain timeframes per specific agreements. These activities reduce the Company’s short-term funding needs, and if they did not occur, the Company would use other funding alternatives, including the use of federal funds purchased. The amount of this compensation expense paid by the Company and included in federal funds purchased and total short-term borrowings rates for 2016, 2015 and 2014 was $171 million, $175 million and $186 million, respectively.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 13 Long-Term Debt Long-term debt (debt with original maturities of more than one year) at December 31 consisted of the following: (Dollars in Millions) Rate Type Rate (a) Maturity Date 2016 2015 U.S. Bancorp (Parent Company) Subordinated notes Fixed 2.950 % 2022 $ 1,300 $ 1,300 Fixed 3.600 % 2024 1,000 1,000 Fixed 7.500 % 2026 199 199 Fixed 3.100 % 2026 1,000 – Medium-term notes Fixed 1.650% - 4.125 % 2017 - 2026 8,800 7,500 Floating 1.282% - 1.396 % 2018 - 2019 750 750 Junior subordinated debentures Fixed 3.442 % 2016 – 500 Other (b) (4 ) 204 Subtotal 13,045 11,453 Subsidiaries Federal Home Loan Bank advances Fixed 1.250% - 8.250 % 2017 - 2026 10 11 Floating .866% - 1.447 % 2017 - 2026 8,559 9,081 Bank notes Fixed 1.350% - 2.800 % 2017 - 2025 6,800 5,850 Floating .582% - 1.467 % 2017 - 2056 3,898 4,928 Other (c) 1,011 755 Subtotal 20,278 20,625 Total $ 33,323 $ 32,078 (a) Weighted-average interest rates of medium-term notes, Federal Home Loan Bank advances and bank notes were 2.48 percent, 1.17 percent and 1.57 percent, respectively. (b) Includes debt issuance fees and unrealized gains and losses and deferred amounts relating to derivative instruments. (c) Includes consolidated community development and tax-advantaged investment VIEs, capitalized lease obligations, debt issuance fees, and unrealized gains and losses and deferred amounts relating to derivative instruments. The Company has arrangements with the Federal Home Loan Bank and Federal Reserve Bank whereby the Company could have borrowed an additional $91.4 billion and $74.9 billion at December 31, 2016 and 2015, respectively, based on collateral available. Maturities of long-term debt outstanding at December 31, 2016, were: (Dollars in Millions) Parent Consolidated 2017 $ 1,250 $ 5,461 2018 1,498 7,282 2019 1,503 6,019 2020 – 43 2021 2,195 2,221 Thereafter 6,599 12,297 Total $ 13,045 $ 33,323

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity At December 31, 2016 and 2015, the Company had authority to issue 4 billion shares of common stock and 50 million shares of preferred stock. The Company had 1.7 billion shares of common stock outstanding at December 31, 2016 and 2015. The Company had 67 million shares reserved for future issuances, primarily under its stock incentive plans at December 31, 2016. The number of shares issued and outstanding and the carrying amount of each outstanding series of the Company’s preferred stock was as follows: 2016 2015 At December 31 (Dollars in Millions) Shares Liquidation Discount Carrying Shares Liquidation Discount Carrying Series A 12,510 $ 1,251 $ 145 $ 1,106 12,510 $ 1,251 $ 145 $ 1,106 Series B 40,000 1,000 – 1,000 40,000 1,000 – 1,000 Series F 44,000 1,100 12 1,088 44,000 1,100 12 1,088 Series G 43,400 1,085 10 1,075 43,400 1,085 10 1,075 Series H 20,000 500 13 487 20,000 500 13 487 Series I 30,000 750 5 745 30,000 750 5 745 Total preferred stock (a) 189,910 $ 5,686 $ 185 $ 5,501 189,910 $ 5,686 $ 185 $ 5,501 (a) The par value of all shares issued and outstanding at December 31, 2016 and 2015, was $1.00 per share. During 2015, the Company issued depositary shares representing an ownership interest in 30,000 shares of Series I Non-Cumulative Perpetual Preferred Stock with a liquidation preference of $25,000 per share (the “Series I Preferred Stock”). The Series I Preferred Stock has no stated maturity and will not be subject to any sinking fund or other obligation of the Company. Dividends, if declared, will accrue and be payable semiannually, in arrears, at a rate per annum equal to 5.125 percent from the date of issuance to, but excluding, January 15, 2021, and thereafter will accrue and be payable quarterly at a floating rate per annum equal to three-month LIBOR plus 3.486 percent. The Series I Preferred Stock is redeemable at the Company’s option, in whole or in part, on or after January 15, 2021. The Series I Preferred stock is redeemable at the Company’s option, in whole, but not in part, prior to January 15, 2021 within 90 days following an official administrative or judicial decision, amendment to, or change in the laws or regulations that would not allow the Company to treat the full liquidation value of the Series I Preferred Stock as Tier 1 capital for purposes of the capital adequacy guidelines of the Federal Reserve Board. During 2013, the Company issued depositary shares representing an ownership interest in 20,000 shares of Series H Non-Cumulative Perpetual Preferred Stock with a liquidation preference of $25,000 per share (the “Series H Preferred Stock”). The Series H Preferred Stock has no stated maturity and will not be subject to any sinking fund or other obligation of the Company. Dividends, if declared, will accrue and be payable quarterly, in arrears, at a rate per annum equal to 5.15 percent. The Series H Preferred Stock is redeemable at the Company’s option, in whole or in part, on or after July 15, 2018. The Series H Preferred stock is redeemable at the Company’s option, in whole, but not in part, prior to July 15, 2018 within 90 days following an official administrative or judicial decision, amendment to, or change in the laws or regulations that would not allow the Company to treat the full liquidation value of the Series H Preferred Stock as Tier 1 capital for purposes of the capital adequacy guidelines of the Federal Reserve. During 2012, the Company issued depositary shares representing an ownership interest in 44,000 shares of Series F Non-Cumulative Perpetual Preferred Stock with a liquidation preference of $25,000 per share (the “Series F Preferred Stock”), and depositary shares representing an ownership interest in 43,400 shares of Series G Non-Cumulative Perpetual Preferred Stock with a liquidation preference of $25,000 per share (the “Series G Preferred Stock”). The Series F Preferred Stock and Series G Preferred Stock have no stated maturity and will not be subject to any sinking fund or other obligation of the Company. Dividends, if declared, will accrue and be payable quarterly, in arrears, at a rate per annum equal to 6.50 percent from the date of issuance to, but excluding, January 15, 2022, and thereafter at a floating rate per annum equal to three-month LIBOR plus 4.468 percent for the Series F Preferred Stock, and 6.00 percent from the date of issuance to, but excluding, April 15, 2017, and thereafter at a floating rate per annum equal to three-month LIBOR plus 4.86125 percent for the Series G Preferred Stock. Both series are redeemable at the Company’s option, in whole or in part, on or after January 15, 2022, for the Series F Preferred Stock and April 15, 2017, for the Series G Preferred Stock. Both series are redeemable at the Company’s option, in whole, but not in part, prior to January 15, 2022, for the Series F Preferred Stock and prior to April 15, 2017, for the Series G Preferred Stock, within 90 days following an official administrative or judicial decision, amendment to, or change in the laws or regulations that would not allow the Company to treat the full liquidation value of the Series F Preferred Stock or Series G Preferred Stock, respectively, as Tier 1 capital for purposes of the capital adequacy guidelines of the Federal Reserve Board. During 2010, the Company issued depositary shares representing an ownership interest in 5,746 shares of Series A Non-Cumulative Perpetual Preferred Stock (the “Series A Preferred Stock”) to investors, in exchange for their portion of USB Capital IX Income Trust Securities. During 2011, the Company issued depositary shares representing an ownership interest in 6,764 shares of Series A Preferred Stock to USB Capital IX, thereby settling the stock purchase contract established between the Company and USB Capital IX as part of the 2006 issuance of USB Capital IX Income Trust Securities. The preferred shares were issued to USB Capital IX for the purchase price specified in the stock forward purchase contract. The Series A Preferred Stock has a liquidation preference of $100,000 per share, no stated maturity and will not be subject to any sinking fund or other obligation of the Company. Dividends, if declared, will accrue and be payable quarterly, in arrears, at a rate per annum equal to the greater of three-month LIBOR plus 1.02 percent or 3.50 percent. The Series A Preferred Stock is redeemable at the Company’s option, subject to prior approval by the Federal Reserve Board. During 2006, the Company issued depositary shares representing an ownership interest in 40,000 shares of Series B Non-Cumulative Perpetual Preferred Stock with a liquidation preference of $25,000 per share (the “Series B Preferred Stock”). The Series B Preferred Stock has no stated maturity and will not be subject to any sinking fund or other obligation of the Company. Dividends, if declared, will accrue and be payable quarterly, in arrears, at a rate per annum equal to the greater of three-month LIBOR plus .60 percent, or 3.50 percent. The Series B Preferred Stock is redeemable at the Company’s option, subject to the prior approval of the Federal Reserve Board. During 2016, 2015 and 2014, the Company repurchased shares of its common stock under various authorizations approved by its Board of Directors. As of December 31, 2016, the approximate dollar value of shares that may yet be purchased by the Company under the current Board of Directors approved authorization was $1.3 billion. The following table summarizes the Company’s common stock repurchased in each of the last three years: (Dollars and Shares in Millions) Shares Value 2016 61 $ 2,600 2015 52 2,246 2014 54 2,262 Shareholders’ equity is affected by transactions and valuations of asset and liability positions that require adjustments to accumulated other comprehensive income (loss). The reconciliation of the transactions affecting accumulated other comprehensive income (loss) included in shareholders’ equity for the years ended December 31, is as follows: (Dollars in Millions) Unrealized Gains Unrealized Gains Unrealized Gains Unrealized Gains Foreign Currency Total 2016 Balance at beginning of period $ 111 $ 36 $ (67 ) $ (1,056 ) $ (43 ) $ (1,019 ) Changes in unrealized gains and losses (858 ) – 74 (255 ) – (1,039 ) Other-than-temporary impairment not recognized in earnings on securities available-for-sale (1 ) – – – – (1 ) Foreign currency translation adjustment (a) – – – – (28 ) (28 ) Reclassification to earnings of realized gains and losses (22 ) (18 ) 124 163 – 247 Applicable income taxes 339 7 (76 ) 35 – 305 Balance at end of period $ (431 ) $ 25 $ 55 $ (1,113 ) $ (71 ) $ (1,535 ) 2015 Balance at beginning of period $ 392 $ 52 $ (172 ) $ (1,106 ) $ (62 ) $ (896 ) Changes in unrealized gains and losses (457 ) – (25 ) (142 ) – (624 ) Foreign currency translation adjustment (a) – – – – 20 20 Reclassification to earnings of realized gains and losses – (25 ) 195 223 – 393 Applicable income taxes 176 9 (65 ) (31 ) (1 ) 88 Balance at end of period $ 111 $ 36 $ (67 ) $ (1,056 ) $ (43 ) $ (1,019 ) 2014 Balance at beginning of period $ (77 ) $ 70 $ (261 ) $ (743 ) $ (60 ) $ (1,071 ) Changes in unrealized gains and losses 764 – (41 ) (733 ) – (10 ) Other-than-temporary impairment not recognized in earnings on securities available-for-sale 1 – – – – 1 Foreign currency translation adjustment (a) – – – – (4 ) (4 ) Reclassification to earnings of realized gains and losses (3 ) (30 ) 186 144 – 297 Applicable income taxes (293 ) 12 (56 ) 226 2 (109 ) Balance at end of period $ 392 $ 52 $ (172 ) $ (1,106 ) $ (62 ) $ (896 ) (a) Represents the impact of changes in foreign currency exchange rates on the Company’s net investment in foreign operations and related hedges. Additional detail about the impact to net income for items reclassified out of accumulated other comprehensive income (loss) and into earnings for the years ended December 31, is as follows: Impact to Net Income Affected Line Item in the (Dollars in Millions) 2016 2015 2014 Unrealized gains (losses) on securities available-for-sale Realized gains (losses) on sale of securities $ 27 $ 1 $ 11 Total securities gains (losses), net Other-than-temporary impairment recognized in earnings (5 ) (1 ) (8 ) 22 – 3 Total before tax (9 ) – (1 ) Applicable income taxes 13 – 2 Net-of-tax Unrealized gains (losses) on securities transferred from available-for-sale to held-to-maturity Amortization of unrealized gains 18 25 30 Interest income (7 ) (9 ) (12 ) Applicable income taxes 11 16 18 Net-of-tax Unrealized gains (losses) on derivative hedges Realized gains (losses) on derivative hedges (124 ) (195 ) (186 ) Net interest income 48 75 71 Applicable income taxes (76 ) (120 ) (115 ) Net-of-tax Unrealized gains (losses) on retirement plans Actuarial gains (losses), prior service cost (credit) and transition obligation (asset) amortization (163 ) (223 ) (144 ) Employee benefits expense 63 85 56 Applicable income taxes (100 ) (138 ) (88 ) Net-of-tax Total impact to net income $ (152 ) $ (242 ) $ (183 ) Regulatory Capital The Company uses certain measures defined by bank regulatory agencies to assess its capital. Beginning January 1, 2014, the regulatory capital requirements effective for the Company follow Basel III, subject to certain transition provisions from Basel I over the following four years to full implementation by January 1, 2018. Basel III includes two comprehensive methodologies for calculating risk-weighted assets: a general standardized approach and more risk-sensitive advanced approaches, with the Company’s capital adequacy being evaluated against the methodology that is most restrictive. Tier 1 capital is considered core capital and includes common shareholders’ equity adjusted for the aggregate impact of certain items included in other comprehensive income (loss) (“common equity tier 1 capital”), plus qualifying preferred stock, trust preferred securities and noncontrolling interests in consolidated subsidiaries subject to certain limitations. Total risk-based capital includes Tier 1 capital and other items such as subordinated debt and the allowance for credit losses. Capital measures are stated as a percentage of risk-weighted assets, which are measured based on their perceived credit and operational risks and include certain off-balance sheet exposures, such as unfunded loan commitments, letters of credit, and derivative contracts. Under the standardized approach, the Company is also subject to a leverage ratio requirement, a non risk-based asset ratio, which is defined as Tier 1 capital as a percentage of average assets adjusted for goodwill and other non-qualifying intangibles and other assets. For a summary of the regulatory capital requirements and the actual ratios as of December 31, 2016 and 2015, for the Company and its bank subsidiary, see Table 23 included in Management’s Discussion and Analysis, which is incorporated by reference into these Notes to Consolidated Financial Statements. The following table provides the components of the Company’s regulatory capital at December 31: (Dollars in Millions) 2016 2015 Basel III transitional standardized approach: Common shareholders’ equity $ 41,797 $ 40,630 Less intangible assets Goodwill (net of deferred tax liability) (8,203 ) (8,295 ) Other disallowed intangible assets (427 ) (335 ) Other (a) 553 612 Total common equity tier 1 capital 33,720 32,612 Qualifying preferred stock 5,501 5,501 Noncontrolling interests eligible for tier 1 capital 203 318 Other (3 ) – Total tier 1 capital 39,421 38,431 Eligible portion of allowance for credit losses 4,357 4,255 Subordinated debt and noncontrolling interests eligible for tier 2 capital 3,576 2,616 Other 1 11 Total tier 2 capital 7,934 6,882 Total risk-based capital $ 47,355 $ 45,313 Risk-weighted assets $ 358,237 $ 341,360 Basel III transitional advanced approaches: Common shareholders’ equity $ 41,797 $ 40,630 Less intangible assets Goodwill (net of deferred tax liability) (8,203 ) (8,295 ) Other disallowed intangible assets (427 ) (335 ) Other (a) 553 612 Total common equity tier 1 capital 33,720 32,612 Qualifying preferred stock 5,501 5,501 Noncontrolling interests eligible for tier 1 capital 203 318 Other (3 ) – Total tier 1 capital 39,421 38,431 Eligible portion of allowance for credit losses 1,266 1,204 Subordinated debt and noncontrolling interests eligible for tier 2 capital 3,576 2,616 Other 1 11 Total tier 2 capital 4,843 3,831 Total risk-based capital $ 44,264 $ 42,262 Risk-weighted assets $ 277,141 $ 261,668 (a) Includes the impact of items included in other comprehensive income (loss), such as unrealized gains (losses) on available-for-sale securities, accumulated net gains on cash flow hedges, pension liability adjustments, etc. Noncontrolling interests principally represent third party investors’ interests in consolidated entities, including preferred stock of consolidated subsidiaries. During 2006, the Company’s banking subsidiary formed USB Realty Corp., a real estate investment trust, for the purpose of issuing 5,000 shares of Fixed-to-Floating Rate Exchangeable Non-cumulative Perpetual Series A Preferred Stock with a liquidation preference of $100,000 per share (“Series A Preferred Securities”) to third party investors. Dividends on the Series A Preferred Securities, if declared, will accrue and be payable quarterly, in arrears, at a rate per annum equal to three-month LIBOR plus 1.147 percent. If USB Realty Corp. has not declared a dividend on the Series A Preferred Securities before the dividend payment date for any dividend period, such dividend shall not be cumulative and shall cease to accrue and be payable, and USB Realty Corp. will have no obligation to pay dividends accrued for such dividend period, whether or not dividends on the Series A Preferred Securities are declared for any future dividend period. The Series A Preferred Securities will be redeemable, in whole or in part, at the option of USB Realty Corp. on each fifth anniversary after the dividend payment date occurring in January 2012. Any redemption will be subject to the approval of the Office of the Comptroller of the Currency. During 2016, the Company purchased 500 shares of the Series A Preferred Securities held by third party investors at an amount below their carrying amount, recording a net gain of $9 million directly to retained earnings. As of December 31, 2016, 4,500 shares of the Series A Preferred Securities remain outstanding.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 15 Earnings Per Share The components of earnings per share were: Year Ended December 31 (Dollars and Shares in Millions, Except Per Share Data) 2016 2015 2014 Net income attributable to U.S. Bancorp $ 5,888 $ 5,879 $ 5,851 Preferred dividends (281 ) (247 ) (243 ) Impact of the purchase of noncontrolling interests (a) 9 – – Earnings allocated to participating stock awards (27 ) (24 ) (25 ) Net income applicable to U.S. Bancorp common shareholders $ 5,589 $ 5,608 $ 5,583 Average common shares outstanding 1,718 1,764 1,803 Net effect of the exercise and assumed purchase of stock awards 6 8 10 Average diluted common shares outstanding 1,724 1,772 1,813 Earnings per common share $ 3.25 $ 3.18 $ 3.10 Diluted earnings per common share $ 3.24 $ 3.16 $ 3.08 (a) Represents the difference between the carrying amount and amount paid by the Company to purchase third party investor holdings of the preferred stock of USB Realty Corp, a consolidated subsidiary of the Company. Options outstanding at December 31, 2016 and 2015 to purchase 1 million common shares, respectively, were not included in the computation of diluted earnings per share for the years ended December 31, 2016 and 2015, respectively, because they were antidilutive.

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Benefits	Employee Benefits Employee Retirement Savings Plan The Company has a defined contribution retirement savings plan that covers substantially all its employees. Qualified employees are allowed to contribute up to 75 percent of their annual compensation, subject to Internal Revenue Service limits, through salary deductions under Section 401(k) of the Internal Revenue Code. Employee contributions are invested at their direction among a variety of investment alternatives. Employee contributions are 100 percent matched by the Company, up to four percent of each employee’s eligible annual compensation. The Company’s matching contribution vests immediately and is invested in the same manner as each employee’s future contribution elections. Total expense for the Company’s matching contributions was $142 million, $131 million and $122 million in 2016, 2015 and 2014, respectively. Pension Plans The Company has a tax qualified noncontributory defined benefit pension plan that provides benefits to substantially all its employees. Participants receive annual cash balance pay credits based on eligible pay multiplied by a percentage determined by their age and years of service. Participants also receive an annual interest credit. Employees become vested upon completing three years of vesting service. For participants in the plan before 2010 that elected to stay under their existing formula, pension benefits are provided to eligible employees based on years of service, multiplied by a percentage of their final average pay. Additionally, as a result of plan mergers, a portion of pension benefits may also be provided using a cash balance benefit formula where only interest credits continue to be credited to participants’ accounts. In general, the Company’s qualified pension plan’s funding objectives include maintaining a funded status sufficient to meet participant benefit obligations over time while reducing long-term funding requirements and pension costs. The Company has an established process for evaluating the plan, its performance and significant plan assumptions, including the assumed discount rate and the long-term rate of return (“LTROR”). Annually, the Company’s Compensation and Human Resources Committee (the “Committee”), assisted by outside consultants, evaluates plan objectives, funding policies and plan investment policies considering its long-term investment time horizon and asset allocation strategies. The process also evaluates significant plan assumptions. Although plan assumptions are established annually, the Company may update its analysis on an interim basis in order to be responsive to significant events that occur during the year, such as plan mergers and amendments. The Company’s funding policy is to contribute amounts to its plan sufficient to meet the minimum funding requirements of the Employee Retirement Income Security Act of 1974, as amended by the Pension Protection Act, plus such additional amounts as the Company determines to be appropriate. The Company made a contribution of $358 million and $414 million to its qualified pension plan in 2016 and 2015, respectively, and expects to contribute $185 million in 2017. Any contributions made to the qualified plan are invested in accordance with established investment policies and asset allocation strategies. In addition to the funded qualified pension plan, the Company maintains a non-qualified plan that is unfunded and provides benefits to certain employees. The assumptions used in computing the accumulated benefit obligation, the projected benefit obligation and net pension expense are substantially consistent with those assumptions used for the funded qualified plan. In 2017, the Company expects to contribute $22 million to its non-qualified pension plan which equals the 2017 expected benefit payments. Postretirement Welfare Plan In addition to providing pension benefits, the Company provides health care and death benefits to certain former employees who retired prior to January 1, 2014. Employees retiring after December 31, 2013, are not eligible for retiree health care benefits. The Company expects to contribute $6 million to its postretirement welfare plan in 2017. The following table summarizes the changes in benefit obligations and plan assets for the years ended December 31, and the funded status and amounts recognized in the Consolidated Balance Sheet at December 31 for the retirement plans: Pension Plans Postretirement (Dollars in Millions) 2016 2015 2016 2015 Change In Projected Benefit Obligation Benefit obligation at beginning of measurement period $ 4,650 $ 4,612 $ 93 $ 104 Service cost 177 188 – – Interest cost 211 195 3 3 Participants’ contributions – – 10 10 Actuarial loss (gain) 234 (176 ) (14 ) (5 ) Lump sum settlements (61 ) (37 ) – – Benefit payments (138 ) (132 ) (19 ) (21 ) Federal subsidy on benefits paid – – 2 2 Benefit obligation at end of measurement period (a) $ 5,073 $ 4,650 $ 75 $ 93 Change In Fair Value Of Plan Assets Fair value at beginning of measurement period $ 3,355 $ 3,187 $ 82 $ 85 Actual return on plan assets 230 (99 ) 2 – Employer contributions 383 436 7 8 Participants’ contributions – – 10 10 Lump sum settlements (61 ) (37 ) – – Benefit payments (138 ) (132 ) (19 ) (21 ) Fair value at end of measurement period $ 3,769 $ 3,355 $ 82 $ 82 Funded (Unfunded) Status $ (1,304 ) $ (1,295 ) $ 7 $ (11 ) Components Of The Consolidated Balance Sheet Noncurrent benefit asset $ – $ – $ 7 $ – Current benefit liability (22 ) (21 ) – – Noncurrent benefit liability (1,282 ) (1,274 ) – (11 ) Recognized amount $ (1,304 ) $ (1,295 ) $ 7 $ (11 ) Accumulated Other Comprehensive Income (Loss), Pretax Net actuarial gain (loss) $ (1,901 ) $ (1,806 ) $ 66 $ 55 Net prior service credit (cost) 2 7 25 28 Recognized amount $ (1,899 ) $ (1,799 ) $ 91 $ 83 (a) At December 31, 2016 and 2015, the accumulated benefit obligation for all pension plans was $4.6 billion and $4.3 billion. The following table provides information for pension plans with benefit obligations in excess of plan assets at December 31: (Dollars in Millions) 2016 2015 Pension Plans with Projected Benefit Obligations in Excess of Plan Assets Projected benefit obligation $ 5,073 $ 4,650 Fair value of plan assets 3,769 3,355 Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets Projected benefit obligation $ 5,073 $ 4,650 Accumulated benefit obligation 4,625 4,310 Fair value of plan assets 3,769 3,355 The following table sets forth the components of net periodic benefit cost and other amounts recognized in accumulated other comprehensive income (loss) for the years ended December 31 for the retirement plans: Pension Plans Postretirement Welfare Plan (Dollars in Millions) 2016 2015 2014 2016 2015 2014 Components Of Net Periodic Benefit Cost Service cost $ 177 $ 188 $ 152 $ – $ – $ – Interest cost 211 195 197 3 3 3 Expected return on plan assets (266 ) (223 ) (208 ) (1 ) (1 ) (1 ) Prior service cost (credit) and transition obligation (asset) amortization (5 ) (4 ) (5 ) (3 ) (3 ) (3 ) Actuarial loss (gain) amortization 175 234 158 (4 ) (4 ) (6 ) Net periodic benefit cost $ 292 $ 390 $ 294 $ (5 ) $ (5 ) $ (7 ) Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income (Loss) Net actuarial gain (loss) arising during the year $ (270 ) $ (146 ) $ (719 ) $ 15 $ 4 $ (14 ) Net actuarial loss (gain) amortized during the year 175 234 158 (4 ) (4 ) (6 ) Net prior service cost (credit) and transition obligation (asset) amortized during the year (5 ) (4 ) (5 ) (3 ) (3 ) (3 ) Total recognized in other comprehensive income (loss) $ (100 ) $ 84 $ (566 ) $ 8 $ (3 ) $ (23 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) (a)(b) $ (392 ) $ (306 ) $ (860 ) $ 13 $ 2 $ (16 ) (a) The pretax estimated actuarial loss (gain) and prior service cost (credit) for the pension plans that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost in 2017 are $127 million and $(2) million, respectively. (b) The pretax estimated actuarial loss (gain) and prior service cost (credit) for the postretirement welfare plan that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost in 2017 are $(6) million and $(3) million, respectively. The following table sets forth weighted average assumptions used to determine the projected benefit obligations at December 31: Pension Plans Postretirement Welfare Plan (Dollars in Millions) 2016 2015 2016 2015 Discount rate (a) 4.27 % 4.45 % 3.57 % 3.59 % Rate of compensation increase (b) 3.58 4.06 * * Health care cost trend rate for the next year (c) 7.00 % 6.50 % Effect on accumulated postretirement benefit obligation One percent increase $ 4 $ 5 One percent decrease (4 ) (5 ) (a) The discount rates were developed using a cash flow matching bond model with a modified duration for the qualified pension plan, non-qualified pension plan and postretirement welfare plan of 15.5, 12.1, and 6.2 years, respectively, for 2016, and 15.0, 11.9 and 6.3 years, respectively, for 2015. (b) Determined on an active liability-weighted basis. (c) The 2016 and 2015 rates are assumed to decrease gradually to 5.00 percent by 2025 and 2019, respectively, and remain at this level thereafter. * Not applicable The following table sets forth weighted average assumptions used to determine net periodic benefit cost for the years ended December 31: Pension Plans Postretirement Welfare Plan (Dollars in Millions) 2016 2015 2014 2016 2015 2014 Discount rate (a) 4.45 % 4.13 % 4.97 % 3.59 % 3.46 % 3.93 % Expected return on plan assets (b) 7.50 7.50 7.50 1.50 1.50 1.50 Rate of compensation increase (c) 4.06 4.07 4.02 * * * Health care cost trend rate (d) Prior to age 65 6.50 % 7.00 % 7.50 % After age 65 6.50 7.00 7.50 Effect on total of service cost and interest cost One percent increase $ – $ – $ – One percent decrease – – – (a) The discount rates were developed using a cash flow matching bond model with a modified duration for the qualified pension plan, non-qualified pension plan and postretirement welfare plan of 15.0, 11.9, and 6.3 years, respectively, for 2016, and 15.9, 12.4 and 6.8 years, respectively, for 2015. (b) With the help of an independent pension consultant, the Company considers several sources when developing its expected long-term rates of return on plan assets assumptions, including, but not limited to, past returns and estimates of future returns given the plans’ asset allocation, economic conditions, and peer group LTROR information. The Company determines its expected long-term rates of return reflecting current economic conditions and plan assets. (c) Determined on an active liability weighted basis. (d) The pre-65 and post-65 rates are both assumed to decrease gradually to 5.00 percent by 2019 and remain at that level thereafter. * Not applicable Investment Policies and Asset Allocation In establishing its investment policies and asset allocation strategies, the Company considers expected returns and the volatility associated with different strategies. An independent consultant performs modeling that projects numerous outcomes using a broad range of possible scenarios, including a mix of possible rates of inflation and economic growth. Starting with current economic information, the model bases its projections on past relationships between inflation, fixed income rates and equity returns when these types of economic conditions have existed over the previous 30 years, both in the United States and in foreign countries. Estimated future returns and other actuarially determined adjustments are also considered in calculating the estimated return on assets. Generally, based on historical performance of the various investment asset classes, investments in equities have outperformed other investment classes but are subject to higher volatility. In an effort to minimize volatility, while recognizing the long-term up-side potential of investing in equities, the Committee has determined that a target asset allocation of 43 percent global equities, 30 percent debt securities, 7 percent domestic mid-small cap equities, 5 percent emerging markets equities, 5 percent real estate equities, 5 percent hedge funds and 5 percent private equity funds is appropriate. At December 31, 2016 and 2015, plan assets of the qualified pension plan included an asset management arrangement with a related party totaling $48 million and $63 million, respectively. In accordance with authoritative accounting guidance, the Company groups plan assets into a three-level hierarchy for valuation techniques used to measure their fair value based on whether the valuation inputs are observable or unobservable. Refer to Note 21 for further discussion on these levels. The assets of the qualified pension plan include investments in equity and U.S. Treasury securities whose fair values are determined based on quoted prices in active markets and are classified within Level 1 of the fair value hierarchy. The qualified pension plan also invests in U.S. agency, corporate and municipal debt securities, which are all valued based on observable market prices or data by third party pricing services, and mutual funds which are valued based on quoted net asset values provided by the trustee of the fund; these assets are classified as Level 2. Additionally, the qualified pension plan invests in certain assets that are valued based on net asset values as a practical expedient, including investments in collective investment funds, hedge funds, and private equity funds; the net asset values are provided by the fund trustee or administrator and are not classified in the fair value hierarchy. The following table summarizes plan investment assets measured at fair value at December 31: Qualified Pension Plan Postretirement 2016 2015 2016 2015 (Dollars in Millions) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 1 Cash and cash equivalents $ 49 $ – $ – $ 49 $ 64 $ – $ – $ 64 $ 82 $ 82 Debt securities 362 577 – 939 361 465 – 826 – – Corporate stock Domestic equity securities – – – – 178 – – 178 – – Mid-small cap equity securities (a) – – – – 146 – – 146 – – International equity securities – – – – 123 – – 123 – – Real estate equity securities (b) 169 – – 169 163 – – 163 – – Mutual funds Debt securities – 164 – 164 – 197 – 197 – – Emerging markets equity securities – 155 – 155 – 81 – 81 – – Other – – 1 1 – – 1 1 – – $ 580 $ 896 $ 1 1,477 $ 1,035 $ 743 $ 1 1,779 82 82 Plan investment assets not classified in fair value hierarchy (e) Collective investment funds Domestic equity securities 977 679 Mid-small cap equity securities (c) 303 68 Emerging markets equity securities – 75 International equity securities 725 533 Hedge funds (d) 188 171 Private equity funds 99 50 Total plan investment assets at fair value $ 3,769 $ 3,355 $ 82 $ 82 (a) At December 31, 2015, securities included $139 million in domestic equities and $7 million in international equities. (b) At December 31, 2016 and 2015, securities included $98 million and $90 million in domestic equities, respectively, and $71 million and $73 million in international equities, respectively. (c) At December 31, 2016, securities included $303 million in domestic equities. At December 31, 2015, securities included $30 million in domestic equities, $20 million in international equities and $18 million in cash and cash equivalents. (d) This category consists of several investment strategies diversified across several hedge fund managers. (e) These investments are valued based on net asset value per share as a practical expedient; fair values are provided to reconcile to total investment assets of the plans at fair value. The following table summarizes the changes in fair value for qualified pension plan investment assets measured at fair value using significant unobservable inputs (Level 3) for the years ended December 31: (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 1 $ 2 $ 4 Unrealized gains (losses) relating to assets still held at end of year – (1 ) (2 ) Balance at end of period $ 1 $ 1 $ 2 The following benefit payments are expected to be paid from the retirement plans for the years ended December 31: (Dollars in Millions) Pension Postretirement (a) Medicare Part D 2017 $ 191 $ 10 $ 2 2018 202 10 2 2019 215 10 2 2020 230 9 2 2021 244 9 2 2022 – 2026 1,448 33 5 (a) Net of expected retiree contributions and before Medicare Part D subsidy.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation As part of its employee and director compensation programs, the Company currently may grant certain stock awards under the provisions of its stock incentive plan. The plan provides for grants of options to purchase shares of common stock at a fixed price equal to the fair value of the underlying stock at the date of grant. Option grants are generally exercisable up to ten years from the date of grant. In addition, the plan provides for grants of shares of common stock or stock units that are subject to restriction on transfer prior to vesting. Most stock and unit awards vest over three to five years and are subject to forfeiture if certain vesting requirements are not met. Stock incentive plans of acquired companies are generally terminated at the merger closing dates. Participants under such plans receive the Company’s common stock, or options to buy the Company’s common stock, based on the conversion terms of the various merger agreements. At December 31, 2016, there were 41 million shares (subject to adjustment for forfeitures) available for grant under the Company’s stock incentive plan. Stock Option Awards The following is a summary of stock options outstanding and exercised under prior and existing stock incentive plans of the Company: Year Ended December 31 Stock Weighted- Weighted-Average Aggregate 2016 Number outstanding at beginning of period 25,725,708 $ 29.82 Granted 1,644,288 39.50 Exercised (10,163,668 ) 31.09 Cancelled (a) (147,087 ) 35.18 Number outstanding at end of period (b) 17,059,241 $ 29.95 4.1 $ 365 Exercisable at end of period 13,856,142 $ 27.53 3.1 $ 330 2015 Number outstanding at beginning of period 33,649,198 $ 29.31 Granted 1,122,697 44.28 Exercised (8,721,834 ) 29.59 Cancelled (a) (324,353 ) 32.93 Number outstanding at end of period (b) 25,725,708 $ 29.82 3.6 $ 331 Exercisable at end of period 22,446,095 $ 28.68 3.0 $ 314 2014 Number outstanding at beginning of period 46,724,765 $ 29.12 Granted 1,246,451 40.32 Exercised (13,851,590 ) 29.59 Cancelled (a) (470,428 ) 31.12 Number outstanding at end of period (b) 33,649,198 $ 29.31 4.0 $ 526 Exercisable at end of period 28,923,260 $ 28.79 3.4 $ 467 (a) Options cancelled include both non-vested (i.e., forfeitures) and vested options. (b) Outstanding options include stock-based awards that may be forfeited in future periods. The impact of the estimated forfeitures is reflected in compensation expense. Stock-based compensation expense is based on the estimated fair value of the award at the date of grant or modification. The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model, requiring the use of subjective assumptions. Because employee stock options have characteristics that differ from those of traded options, including vesting provisions and trading limitations that impact their liquidity, the determined value used to measure compensation expense may vary from the actual fair value of the employee stock options. The following table includes the weighted-average estimated fair value of stock options granted and the assumptions utilized by the Company for newly issued grants: Year Ended December 31 2016 2015 2014 Estimated fair value $ 10.28 $ 12.23 $ 11.38 Risk-free interest rates 1.3 % 1.7 % 1.7 % Dividend yield 2.6 % 2.6 % 2.6 % Stock volatility factor .36 .37 .38 Expected life of options (in years) 5.5 5.5 5.5 Expected stock volatility is based on several factors including the historical volatility of the Company’s common stock, implied volatility determined from traded options and other factors. The Company uses historical data to estimate option exercises and employee terminations to estimate the expected life of options. The risk-free interest rate for the expected life of the options is based on the U.S. Treasury yield curve in effect on the date of grant. The expected dividend yield is based on the Company’s expected dividend yield over the life of the options. The following summarizes certain stock option activity of the Company: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Fair value of options vested $ 18 $ 25 $ 33 Intrinsic value of options exercised 138 130 171 Cash received from options exercised 316 257 408 Tax benefit realized from options exercised 53 50 66 To satisfy option exercises, the Company predominantly uses treasury stock. Additional information regarding stock options outstanding as of December 31, 2016, is as follows: Outstanding Options Exercisable Options Range of Exercise Prices Shares Weighted- Weighted- Shares Weighted- $11.02 – $15.00 1,997,288 2.1 $ 11.14 1,997,288 $ 11.14 $15.01 – $20.00 156,573 .9 19.63 156,573 19.63 $20.01 – $25.00 1,611,033 3.1 23.85 1,611,033 23.85 $25.01 – $30.00 4,282,283 4.4 28.28 4,282,283 28.28 $30.01 – $35.00 4,929,704 2.0 32.45 4,688,105 32.37 $35.01 – $40.00 1,956,643 7.6 38.93 340,870 36.25 $40.01 – $44.32 2,125,717 7.6 42.32 779,990 41.67 Total 17,059,241 4.1 $ 29.95 13,856,142 $ 27.53 Restricted Stock and Unit Awards A summary of the status of the Company’s restricted shares of stock and unit awards is presented below: 2016 2015 2014 Year Ended December 31 Shares Weighted- Value Shares Weighted- Value Shares Weighted- Value Outstanding at beginning of period 6,894,831 $ 38.44 7,921,571 $ 34.09 8,653,859 $ 29.96 Granted 4,879,421 39.65 2,897,396 44.24 3,133,168 40.37 Vested (3,069,035 ) 37.25 (3,428,736 ) 33.27 (3,409,650 ) 29.38 Cancelled (439,710 ) 40.18 (495,400 ) 38.66 (455,806 ) 34.05 Outstanding at end of period 8,265,507 $ 39.50 6,894,831 $ 38.44 7,921,571 $ 34.09 The total fair value of shares vested was $128 million, $152 million and $139 million for the years ended December 31, 2016, 2015 and 2014, respectively. Stock-based compensation expense was $150 million, $125 million and $125 million for the years ended December 31, 2016, 2015 and 2014, respectively. On an after-tax basis, stock-based compensation was $93 million, $78 million and $78 million for the years ended December 31, 2016, 2015 and 2014, respectively. As of December 31, 2016, there was $199 million of total unrecognized compensation cost related to nonvested share-based arrangements granted under the plans. That cost is expected to be recognized over a weighted-average period of 2.6 years as compensation expense.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of income tax expense were: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Federal Current $ 2,585 $ 1,956 $ 1,888 Deferred (711 ) (223 ) (126 ) Federal income tax 1,874 1,733 1,762 State Current 337 346 331 Deferred (50 ) 18 (6 ) State income tax 287 364 325 Total income tax provision $ 2,161 $ 2,097 $ 2,087 A reconciliation of expected income tax expense at the federal statutory rate of 35 percent to the Company’s applicable income tax expense follows: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Tax at statutory rate $ 2,837 $ 2,810 $ 2,798 State income tax, at statutory rates, net of federal tax benefit 244 237 211 Tax effect of Tax credits and benefits, net of related expenses (710 ) (700 ) (701 ) Tax-exempt income (196 ) (201 ) (205 ) Noncontrolling interests (20 ) (19 ) (20 ) Other items 6 (30 ) (a) 4 Applicable income taxes $ 2,161 $ 2,097 $ 2,087 (a) Includes the resolution of certain tax matters with taxing authorities in the first quarter of 2015. The tax effects of fair value adjustments on securities available-for-sale, derivative instruments in cash flow hedges, foreign currency translation adjustments, pension and post-retirement plans and certain tax benefits related to share-based compensation are recorded directly to shareholders’ equity as part of other comprehensive income (loss) or additional paid-in capital. In preparing its tax returns, the Company is required to interpret complex tax laws and regulations and utilize income and cost allocation methods to determine its taxable income. On an ongoing basis, the Company is subject to examinations by federal, state, local and foreign taxing authorities that may give rise to differing interpretations of these complex laws, regulations and methods. Due to the nature of the examination process, it generally takes years before these examinations are completed and matters are resolved. Federal tax examinations for all years ending through December 31, 2010, are completed and resolved. The Company’s tax returns for the years ended December 31, 2011, 2012, 2013 and 2014 are under examination by the Internal Revenue Service. The years open to examination by state and local government authorities vary by jurisdiction. A reconciliation of the changes in the federal, state and foreign unrecognized tax position balances are summarized as follows Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 243 $ 267 $ 264 Additions (reductions) for tax positions taken in prior years 57 (17 ) 31 Additions for tax positions taken in the current year 12 13 4 Exam resolutions (6 ) (17 ) (22 ) Statute expirations (4 ) (3 ) (10 ) Balance at end of period $ 302 $ 243 $ 267 The total amount of unrecognized tax positions that, if recognized, would impact the effective income tax rate as of December 31, 2016, 2015 and 2014, were $234 million, $165 million and $192 million, respectively. The Company classifies interest and penalties related to unrecognized tax positions as a component of income tax expense. At December 31, 2016, the Company’s unrecognized tax position balance included $37 million in accrued interest. During the years ended December 31, 2016, 2015 and 2014 the Company recorded approximately $7 million, $(1) million and $4 million, respectively, in interest on unrecognized tax positions. Deferred income tax assets and liabilities reflect the tax effect of estimated temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for the same items for income tax reporting purposes. The significant components of the Company’s net deferred tax asset (liability) follows: At December 31 (Dollars in Millions) 2016 2015 Deferred Tax Assets Allowance for credit losses $ 1,667 $ 1,615 Federal, state and foreign net operating loss and credit carryforwards 971 464 Accrued expenses 806 764 Partnerships and other investment assets 521 380 Pension and postretirement benefits 394 247 Securities available-for-sale and financial instruments 220 – Stock compensation 120 131 Other deferred tax assets, net 291 219 Gross deferred tax assets 4,990 3,820 Deferred Tax Liabilities Leasing activities (3,096 ) (3,026 ) Goodwill and other intangible assets (962 ) (859 ) Mortgage servicing rights (883 ) (859 ) Loans (234 ) (204 ) Fixed assets (60 ) (111 ) Securities available-for-sale and financial instruments – (47 ) Other deferred tax liabilities, net (113 ) (55 ) Gross deferred tax liabilities (5,348 ) (5,161 ) Valuation allowance (121 ) (137 ) Net Deferred Tax Asset (Liability) $ (479 ) $ (1,478 ) The Company has approximately $1.3 billion of federal, state and foreign net operating loss carryforwards which expire at various times through 2036. A substantial portion of these carryforwards relate to state-only net operating losses, which are subject to a full valuation allowance as they are not expected to be realized within the carryforward period. Management has determined it is more likely than not the other net deferred tax assets could be realized through carry back to taxable income in prior years, future reversals of existing taxable temporary differences and future taxable income. In addition, the Company has $794 million of federal credit carryforwards which expire at various times through 2036 which are not subject to a valuation allowance as management believes that it is more likely than not that the credits will be utilized within the carryforward period. At December 31, 2016, retained earnings included approximately $102 million of base year reserves of acquired thrift institutions, for which no deferred federal income tax liability has been recognized. These base year reserves would be recaptured if certain subsidiaries of the Company cease to qualify as a bank for federal income tax purposes. The base year reserves also remain subject to income tax penalty provisions that, in general, require recapture upon certain stock redemptions of, and excess distributions to, stockholders.

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	NOTE 19 Derivative Instruments In the ordinary course of business, the Company enters into derivative transactions to manage various risks and to accommodate the business requirements of its customers. The Company recognizes all derivatives on the Consolidated Balance Sheet at fair value in other assets or in other liabilities. On the date the Company enters into a derivative contract, the derivative is designated as either a fair value hedge, cash flow hedge, net investment hedge, or a designation is not made as it is a customer-related transaction, an economic hedge for asset/liability risk management purposes or another stand-alone derivative created through the Company’s operations (“free-standing derivative”). When a derivative is designated as a fair value, cash flow or net investment hedge, the Company performs an assessment, at inception and, at a minimum, quarterly thereafter, to determine the effectiveness of the derivative in offsetting changes in the value or cash flows of the hedged item(s). Fair Value Hedges These derivatives are interest rate swaps the Company uses to hedge the change in fair value related to interest rate changes of its underlying fixed-rate debt. Changes in the fair value of derivatives designated as fair value hedges, and changes in the fair value of the hedged items, are recorded in earnings. All fair value hedges were highly effective for the year ended December 31, 2016, and the change in fair value attributed to hedge ineffectiveness was not material. Cash Flow Hedges These derivatives are interest rate swaps the Company uses to hedge the forecasted cash flows from its underlying variable-rate debt. Changes in the fair value of derivatives designated as cash flow hedges are recorded in other comprehensive income (loss) until the cash flows of the hedged items are realized. If a derivative designated as a cash flow hedge is terminated or ceases to be highly effective, the gain or loss in other comprehensive income (loss) is amortized to earnings over the period the forecasted hedged transactions impact earnings. If a hedged forecasted transaction is no longer probable, hedge accounting is ceased and any gain or loss included in other comprehensive income (loss) is reported in earnings immediately, unless the forecasted transaction is at least reasonably possible of occurring, whereby the amounts remain within other comprehensive income (loss). At December 31, 2016, the Company had $55 million (net-of-tax) of realized and unrealized gains on derivatives classified as cash flow hedges recorded in other comprehensive income (loss), compared with $67 million (net-of-tax) of realized and unrealized losses at December 31, 2015. The estimated amount to be reclassified from other comprehensive income (loss) into earnings during the next 12 months is a loss of $20 million (net-of-tax). This amount includes gains and losses related to hedges that were terminated early for which the forecasted transactions are still probable. All cash flow hedges were highly effective for the year ended December 31, 2016, and the change in fair value attributed to hedge ineffectiveness was not material. Net Investment Hedges The Company uses forward commitments to sell specified amounts of certain foreign currencies, and occasionally non-derivative debt instruments, to hedge the volatility of its net investment in foreign operations driven by fluctuations in foreign currency exchange rates. The ineffectiveness on all net investment hedges was not material for the year ended December 31, 2016. There were no non-derivative debt instruments designated as net investment hedges at December 31, 2016 or 2015. Other Derivative Positions The Company enters into free-standing derivatives to mitigate interest rate risk and for other risk management purposes. These derivatives include forward commitments to sell to-be-announced securities (“TBAs”) and other commitments to sell residential mortgage loans, which are used to economically hedge the interest rate risk related to residential MLHFS and unfunded mortgage loan commitments. The Company also enters into interest rate swaps, swaptions, forward commitments to buy TBAs, U.S. Treasury and Eurodollar futures and options on U.S. Treasury futures to economically hedge the change in the fair value of the Company’s MSRs. The Company also enters into foreign currency forwards to economically hedge remeasurement gains and losses the Company recognizes on foreign currency denominated assets and liabilities. In addition, the Company acts as a seller and buyer of interest rate derivatives and foreign exchange contracts for its customers. The Company mitigates the market and liquidity risk associated with these customer derivatives by entering into similar offsetting positions with broker-dealers, or on a portfolio basis by entering into other derivative or non-derivative financial instruments that partially or fully offset the exposure from these customer-related positions. The Company’s customer derivatives and related hedges are monitored and reviewed by the Company’s Market Risk Committee, which establishes policies for market risk management, including exposure limits for each portfolio. The Company also has derivative contracts that are created through its operations, including commitments to originate MLHFS and swap agreements related to the sale of a portion of its Class B common shares of Visa Inc. Refer to Note 21 for further information on these swap agreements. For additional information on the Company’s purpose for entering into derivative transactions and its overall risk management strategies, refer to “Management Discussion and Analysis — Use of Derivatives to Manage Interest Rate and Other Risks”, which is incorporated by reference into these Notes to Consolidated Financial Statements. The following table summarizes the asset and liability management derivative positions of the Company: Asset Derivatives Liability Derivatives (Dollars in Millions) Notional Fair Weighted-Average In Years Notional Fair Weighted-Average In Years December 31, 2016 Fair value hedges Interest rate contracts Receive fixed/pay floating swaps $ 2,550 $ 49 4.28 $ 1,250 $ 12 2.32 Cash flow hedges Interest rate contracts Pay fixed/receive floating swaps 3,272 108 8.63 2,787 35 .83 Net investment hedges Foreign exchange forward contracts 1,347 15 .04 – – – Other economic hedges Interest rate contracts Futures and forwards Buy 1,748 13 .09 1,722 18 .05 Sell 2,278 129 .08 4,214 43 .09 Options Purchased 1,565 43 8.60 – – – Written 1,073 25 .07 12 1 .06 Receive fixed/pay floating swaps 6,452 26 11.48 1,561 16 6.54 Pay fixed/receive floating swaps 4,705 13 6.51 2,320 9 7.80 Foreign exchange forward contracts 849 6 .02 867 6 .02 Equity contracts 11 – .40 102 1 .57 Credit contracts 1,397 – 3.38 3,674 2 3.57 Other (a) 19 – .03 830 106 3.42 Total $ 27,266 $ 427 $ 19,339 $ 249 December 31, 2015 Fair value hedges Interest rate contracts Receive fixed/pay floating swaps $ 3,050 $ 73 4.43 $ – $ – – Cash flow hedges Interest rate contracts Pay fixed/receive floating swaps 1,772 7 9.22 5,009 146 1.13 Net investment hedges Foreign exchange forward contracts 1,140 4 .04 – – – Other economic hedges Interest rate contracts Futures and forwards Buy 3,812 17 .07 452 1 .06 Sell 3,201 12 .09 2,559 7 .12 Options Purchased 2,935 – .06 – – – Written 3,199 29 .10 5 1 .08 Receive fixed/pay floating swaps 3,733 42 9.98 4,748 18 10.18 Pay fixed/receive floating swaps 287 2 9.82 4,158 35 9.97 Foreign exchange forward contracts 3,023 13 .01 2,380 10 .03 Equity contracts 62 – .47 24 1 .82 Credit contracts 1,192 2 2.58 2,821 3 2.99 Other (a) 36 – .04 662 64 2.60 Total $ 27,442 $ 201 $ 22,818 $ 286 (a) Includes short-term underwriting purchase and sale commitments with total asset and liability notional values of $19 million and $36 million at December 31, 2016 and 2015, respectively, and derivative liability swap agreements related to the sale of a portion of the Company’s Class B common shares of Visa Inc. The Visa swap agreements had a total notional value, fair value and weighted average remaining maturity of $811 million, $106 million and 3.50 years at December 31, 2016, respectively, compared to $626 million, $64 million and 2.75 years at December 31, 2015, respectively. The following table summarizes the customer-related derivative positions of the Company: Asset Derivatives Liability Derivatives (Dollars in Millions) Notional Fair Weighted-Average Notional Fair Weighted-Average December 31, 2016 Interest rate contracts Receive fixed/pay floating swaps $ 38,501 $ 930 4.07 $ 39,403 $ 632 4.89 Pay fixed/receive floating swaps 36,671 612 4.99 40,324 996 4.07 Options Purchased 14,545 51 1.85 125 2 1.37 Written 125 3 1.37 13,518 50 1.70 Futures Buy 306 – 1.96 7,111 7 .90 Foreign exchange rate contracts Forwards, spots and swaps 20,664 849 .58 19,640 825 .60 Options Purchased 2,376 98 1.67 – – – Written – – – 2,376 98 1.67 Total $ 113,188 $ 2,543 $ 122,497 $ 2,610 December 31, 2015 Interest rate contracts Receive fixed/pay floating swaps $ 32,647 $ 1,097 5.69 $ 14,068 $ 54 4.71 Pay fixed/receive floating swaps 10,685 43 4.55 35,045 1,160 5.74 Options Purchased 8,705 10 2.61 146 1 2.23 Written 146 2 2.23 8,482 9 2.57 Futures Buy – – – 2,859 2 .84 Sell 45 – .97 – – – Foreign exchange rate contracts Forwards, spots and swaps 18,399 851 .59 17,959 830 .58 Options Purchased 1,485 43 1.19 – – – Written – – – 1,485 43 1.19 Total $ 72,112 $ 2,046 $ 80,044 $ 2,099 The table below shows the effective portion of the gains (losses) recognized in other comprehensive income (loss) and the gains (losses) reclassified from other comprehensive income (loss) into earnings (net-of-tax) for the years ended December 31: Gains (Losses) Recognized in Other Gains (Losses) Reclassified from (Dollars in Millions) 2016 2015 2014 2016 2015 2014 Asset and Liability Management Positions Cash flow hedges Interest rate contracts (a) $ 46 $ (15 ) $ (26 ) $ (76 ) $ (120 ) $ (115 ) Net investment hedges Foreign exchange forward contracts 33 101 130 – – – Note: Ineffectiveness on cash flow and net investment hedges was not material for the years ended December 31, 2016, 2015 and 2014. (a) Gains (Losses) reclassified from other comprehensive income (loss) into interest income on loans and interest expense on long-term debt. The table below shows the gains (losses) recognized in earnings for fair value hedges, other economic hedges and the customer-related positions for the years ended December 31: (Dollars in Millions) Location of Gains (Losses) Recognized in Earnings 2016 2015 2014 Asset and Liability Management Positions Fair value hedges (a) Interest rate contracts Other noninterest income $ (31 ) $ 7 $ 29 Other economic hedges Interest rate contracts Futures and forwards Mortgage banking revenue 101 186 (122 ) Purchased and written options Mortgage banking revenue 331 191 287 Receive fixed/pay floating swaps Mortgage banking revenue 226 139 384 Pay fixed/receive floating swaps Mortgage banking revenue (140 ) (33 ) – Foreign exchange forward contracts Commercial products revenue (14 ) 108 (29 ) Equity contracts Compensation expense 1 (1 ) 2 Credit contracts Other noninterest income 1 2 – Other Other noninterest income (39 ) – (43 ) Customer-Related Positions Interest rate contracts Receive fixed/pay floating swaps Other noninterest income (708 ) 360 686 Pay fixed/receive floating swaps Other noninterest income 769 (320 ) (652 ) Purchased and written options Other noninterest income (5 ) 3 – Futures Other noninterest income (6 ) 1 – Foreign exchange rate contracts Forwards, spots and swaps Commercial products revenue 88 74 66 Purchased and written options Commercial products revenue (1 ) 2 1 (a) Gains (Losses) on items hedged by interest rate contracts included in noninterest income (expense), were $31 million, $(7) million and $(27) million for the years ended December 31, 2016, 2015 and 2014, respectively. The ineffective portion was immaterial for the years ended December 31, 2016, 2015 and 2014. Derivatives are subject to credit risk associated with counterparties to the derivative contracts. The Company measures that credit risk using a credit valuation adjustment and includes it within the fair value of the derivative. The Company manages counterparty credit risk through diversification of its derivative positions among various counterparties, by entering into derivative positions that are centrally cleared through clearinghouses, by entering into master netting arrangements and, where possible, by requiring collateral arrangements. A master netting arrangement allows two counterparties, who have multiple derivative contracts with each other, the ability to net settle amounts under all contracts, including any related collateral, through a single payment and in a single currency. Collateral arrangements require the counterparty to deliver collateral (typically cash or U.S. Treasury and agency securities) equal to the Company’s net derivative receivable, subject to minimum transfer and credit rating requirements. The Company’s collateral arrangements are predominately bilateral and, therefore, contain provisions that require collateralization of the Company’s net liability derivative positions. Required collateral coverage is based on certain net liability thresholds and contingent upon the Company’s credit rating from two of the nationally recognized statistical rating organizations. If the Company’s credit rating were to fall below credit ratings thresholds established in the collateral arrangements, the counterparties to the derivatives could request immediate additional collateral coverage up to and including full collateral coverage for derivatives in a net liability position. The aggregate fair value of all derivatives under collateral arrangements that were in a net liability position at December 31, 2016, was $563 million. At December 31, 2016, the Company had $455 million of cash posted as collateral against this net liability position.

Netting Arrangements for Certai

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Netting Arrangements for Certain Financial Instruments and Securities Financing Activities	NOTE 20 Netting Arrangements for Certain Financial Instruments and Securities Financing Activities The majority of the Company’s derivative portfolio consists of bilateral over-the-counter trades. However, current regulations require that certain interest rate swaps and forwards and credit contracts need to be centrally cleared through clearinghouses. In addition, a portion of the Company’s derivative positions are exchange-traded. These are predominately U.S. Treasury futures or options on U.S. Treasury futures. Of the Company’s $282.3 billion total notional amount of derivative positions at December 31, 2016, $130.3 billion related to those centrally cleared through clearinghouses and $7.4 billion related to those that were exchange-traded. Irrespective of how derivatives are traded, the Company’s derivative contracts include offsetting rights (referred to as netting arrangements), and depending on expected volume, credit risk, and counterparty preference, collateral maintenance may be required. For all derivatives under collateral support arrangements, fair value is determined daily and, depending on the collateral maintenance requirements, the Company and a counterparty may receive or deliver collateral, based upon the net fair value of all derivative positions between the Company and the counterparty. Collateral is typically cash, but securities may be allowed under collateral arrangements with certain counterparties. Receivables and payables related to cash collateral are included in other assets and other liabilities on the Consolidated Balance Sheet, along with the related derivative asset and liability fair values. Any securities pledged to counterparties as collateral remain on the Consolidated Balance Sheet. Securities received from counterparties as collateral are not recognized on the Consolidated Balance Sheet, unless the counterparty defaults. In general, securities used as collateral can be sold, repledged or otherwise used by the party in possession. No restrictions exist on the use of cash collateral by either party. Refer to Note 19 for further discussion of the Company’s derivatives, including collateral arrangements. As part of the Company’s treasury and broker-dealer operations, the Company executes transactions that are treated as securities sold under agreements to repurchase or securities purchased under agreements to resell, both of which are accounted for as collateralized financings. Securities sold under agreements to repurchase include repurchase agreements and securities loaned transactions. Securities purchased under agreements to resell include reverse repurchase agreements and securities borrowed transactions. For securities sold under agreements to repurchase, the Company records a liability for the cash received, which is included in short-term borrowings on the Consolidated Balance Sheet. For securities purchased under agreements to resell, the Company records a receivable for the cash paid, which is included in other assets on the Consolidated Balance Sheet. Securities transferred to counterparties under repurchase agreements and securities loaned transactions continue to be recognized on the Consolidated Balance Sheet, are measured at fair value, and are included in investment securities or other assets. Securities received from counterparties under reverse repurchase agreements and securities borrowed transactions are not recognized on the Consolidated Balance Sheet unless the counterparty defaults. The securities transferred under repurchase and reverse repurchase transactions typically are U.S. Treasury and agency securities or residential agency mortgage-backed securities. The securities loaned or borrowed typically are corporate debt securities traded by the Company’s broker-dealer. In general, the securities transferred can be sold, repledged or otherwise used by the party in possession. No restrictions exist on the use of cash collateral by either party. Repurchase/reverse repurchase and securities loaned/borrowed transactions expose the Company to counterparty risk. The Company manages this risk by performing assessments, independent of business line managers, and establishing concentration limits on each counterparty. Additionally, these transactions include collateral arrangements that require the fair values of the underlying securities to be determined daily, resulting in cash being obtained or refunded to counterparties to maintain specified collateral levels. At December 31, 2015, the Company had no outstanding securities loaned transactions. The following table summarizes the maturities by category of collateral pledged for repurchase agreements and securities loaned transactions: (Dollars in Millions) Overnight and Less Than Total December 31, 2016 Repurchase agreements U.S. Treasury and agencies $ 60 $ – $ 60 Residential agency mortgage-backed securities 681 30 711 Corporate debt securities 30 – 30 Total repurchase agreements 771 30 801 Securities loaned Corporate debt securities 223 – 223 Total securities loaned 223 – 223 Gross amount of recognized liabilities $ 994 $ 30 $ 1,024 December 31, 2015 Repurchase agreements U.S. Treasury and agencies $ 122 $ – $ 122 Residential agency mortgage-backed securities 802 168 970 Gross amount of recognized liabilities $ 924 $ 168 $ 1,092 The Company executes its derivative, repurchase/reverse repurchase and securities loaned/borrowed transactions under the respective industry standard agreements. These agreements include master netting arrangements that allow for multiple contracts executed with the same counterparty to be viewed as a single arrangement. This allows for net settlement of a single amount on a daily basis. In the event of default, the master netting arrangement provides for close-out netting, which allows all of these positions with the defaulting counterparty to be terminated and net settled with a single payment amount. The Company has elected to offset the assets and liabilities under netting arrangements for the balance sheet presentation of the majority of its derivative counterparties, excluding centrally cleared derivative contracts due to current uncertainty about the legal enforceability of netting arrangements with the clearinghouses. The netting occurs at the counterparty level, and includes all assets and liabilities related to the derivative contracts, including those associated with cash collateral received or delivered. The Company has not elected to offset the assets and liabilities under netting arrangements for the balance sheet presentation of repurchase/reverse repurchase and securities loaned/borrowed transactions. The following tables provide information on the Company’s netting adjustments, and items not offset on the Consolidated Balance Sheet but available for offset in the event of default: Gross Recognized Gross Amounts Consolidated (a) Net Amounts Consolidated Gross Amounts Not Offset on (Dollars in Millions) Financial (b) Collateral (c) Net December 31, 2016 Derivative assets (d) $ 2,122 $ (984 ) $ 1,138 $ (78 ) $ (10 ) $ 1,050 Reverse repurchase agreements 77 – 77 (60 ) (17 ) – Securities borrowed 944 – 944 (10 ) (909 ) 25 Total $ 3,143 $ (984 ) $ 2,159 $ (148 ) $ (936 ) $ 1,075 December 31, 2015 Derivative assets (d) $ 1,879 $ (807 ) $ 1,072 $ (82 ) $ – $ 990 Reverse repurchase agreements 106 – 106 (102 ) (4 ) – Securities borrowed 772 – 772 – (753 ) 19 Total $ 2,757 $ (807 ) $ 1,950 $ (184 ) $ (757 ) $ 1,009 (a) Includes $210 million and $165 million of cash collateral related payables that were netted against derivative assets at December 31, 2016 and 2015, respectively. (b) For derivative assets this includes any derivative liability fair values that could be offset in the event of counterparty default; for reverse repurchase agreements this includes any repurchase agreement payables that could be offset in the event of counterparty default; for securities borrowed this includes any securities loaned payables that could be offset in the event of counterparty default. (c) Includes the fair value of securities received by the Company from the counterparty. These securities are not included on the Consolidated Balance Sheet unless the counterparty defaults. (d) Excludes $848 million and $368 million of derivative assets centrally cleared or otherwise not subject to netting arrangements at December 31, 2016 and 2015, respectively. Gross Recognized Gross Amounts Consolidated (a) Net Amounts Consolidated Gross Amounts Not Offset on the Consolidated Balance Sheet Net (Dollars in Millions) Financial (b) Collateral (c) December 31, 2016 Derivative liabilities (d) $ 1,951 $ (1,185 ) $ 766 $ (78 ) $ – $ 688 Repurchase agreements 801 – 801 (60 ) (741 ) – Securities loaned 223 – 223 (10 ) (211 ) 2 Total $ 2,975 $ (1,185 ) $ 1,790 $ (148 ) $ (952 ) $ 690 December 31, 2015 Derivative liabilities (d) $ 1,809 $ (1,283 ) $ 526 $ (82 ) $ – $ 444 Repurchase agreements 1,092 – 1,092 (102 ) (990 ) – Total $ 2,901 $ (1,283 ) $ 1,618 $ (184 ) $ (990 ) $ 444 (a) Includes $411 million and $641 million of cash collateral related receivables that were netted against derivative liabilities at December 31, 2016 and 2015, respectively. (b) For derivative liabilities this includes any derivative asset fair values that could be offset in the event of counterparty default; for repurchase agreements this includes any reverse repurchase agreement receivables that could be offset in the event of counterparty default; for securities loaned this includes any securities borrowed receivables that could be offset in the event of counterparty default. (c) Includes the fair value of securities pledged by the Company to the counterparty. These securities are included on the Consolidated Balance Sheet unless the Company defaults. (d) Excludes $908 million and $576 million of derivative liabilities centrally cleared or otherwise not subject to netting arrangements at December 31, 2016 and 2015, respectively.

Fair Values of Assets and Liabi

Fair Values of Assets and Liabilities	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Values of Assets and Liabilities	Fair Values of Assets and Liabilities The Company uses fair value measurements for the initial recording of certain assets and liabilities, periodic remeasurement of certain assets and liabilities, and disclosures. Derivatives, trading and available-for-sale investment securities, MSRs and substantially all MLHFS are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans held for sale, loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application of lower-of-cost-or-fair value accounting or impairment write-downs of individual assets. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A fair value measurement reflects all of the assumptions that market participants would use in pricing the asset or liability, including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. The Company groups its assets and liabilities measured at fair value into a three-level hierarchy for valuation techniques used to measure financial assets and financial liabilities at fair value. This hierarchy is based on whether the valuation inputs are observable or unobservable. These levels are: – Level 1 — Quoted prices in active markets for identical assets or liabilities. Level 1 includes U.S. Treasury securities, as well as exchange-traded instruments, including certain perpetual preferred and corporate debt securities. – Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 includes debt securities that are traded less frequently than exchange-traded instruments and which are typically valued using third party pricing services; derivative contracts and other assets and liabilities, including securities, whose value is determined using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data; and MLHFS whose values are determined using quoted prices for similar assets or pricing models with inputs that are observable in the market or can be corroborated by observable market data. – Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. This category includes MSRs, certain debt securities and certain derivative contracts. When the Company changes its valuation inputs for measuring financial assets and financial liabilities at fair value, either due to changes in current market conditions or other factors, it may need to transfer those assets or liabilities to another level in the hierarchy based on the new inputs used. The Company recognizes these transfers at the end of the reporting period in which the transfers occur. During the years ended December 31, 2016, 2015 and 2014, there were no transfers of financial assets or financial liabilities between the hierarchy levels. The Company has processes and controls in place to increase the reliability of estimates it makes in determining fair value measurements. Items quoted on an exchange are verified to the quoted price. Items provided by a third party pricing service are subject to price verification procedures as described in more detail in the specific valuation discussions below. For fair value measurements modeled internally, the Company’s valuation models are subject to the Company’s Model Risk Governance Policy and Program, as maintained by the Company’s risk management department. The purpose of model validation is to assess the accuracy of the models’ input, processing, and reporting components. All models are required to be independently reviewed and approved prior to being placed in use, and are subject to formal change control procedures. Under the Company’s Model Risk Governance Policy, models are required to be reviewed at least annually to ensure they are operating as intended. Inputs into the models are market observable inputs whenever available. When market observable inputs are not available, the inputs are developed based upon analysis of historical experience and evaluation of other relevant market data. Significant unobservable model inputs are subject to review by senior management in corporate functions, who are independent from the modeling. Significant unobservable model inputs are also compared to actual results, typically on a quarterly basis. Significant Level 3 fair value measurements are also subject to corporate-level review and are benchmarked to market transactions or other market data, when available. Additional discussion of processes and controls are provided in the valuation methodologies section that follows. The following section describes the valuation methodologies used by the Company to measure financial assets and liabilities at fair value and for estimating fair value for financial instruments not recorded at fair value as required under disclosure guidance related to the fair value of financial instruments. In addition, the following section includes an indication of the level of the fair value hierarchy in which the assets or liabilities are classified. Where appropriate, the description includes information about the valuation models and key inputs to those models. During the years ended December 31, 2016, 2015 and 2014, there were no significant changes to the valuation techniques used by the Company to measure fair value. Cash and Due From Banks The carrying value of cash and due from banks approximate fair value and are classified within Level 1. Fair value is provided for disclosure purposes only. Federal Funds Sold and Securities Purchased Under Resale Agreements The carrying value of federal funds sold and securities purchased under resale agreements approximate fair value because of the relatively short time between the origination of the instrument and its expected realization and are classified within Level 2. Fair value is provided for disclosure purposes only. Investment Securities When quoted market prices for identical securities are available in an active market, these prices are used to determine fair value and these securities are classified within Level 1 of the fair value hierarchy. Level 1 investment securities include U.S. Treasury and exchange-traded securities. For other securities, quoted market prices may not be readily available for the specific securities. When possible, the Company determines fair value based on market observable information, including quoted market prices for similar securities, inactive transaction prices, and broker quotes. These securities are classified within Level 2 of the fair value hierarchy. Level 2 valuations are generally provided by a third party pricing service. The Company reviews the valuation methodologies utilized by the pricing service and, on a quarterly basis, reviews the security level prices provided by the pricing service against management’s expectation of fair value, based on changes in various benchmarks and market knowledge from recent trading activity. Additionally, each quarter, the Company validates the fair value provided by the pricing services by comparing them to recent observable market trades (where available), broker provided quotes, or other independent secondary pricing sources. Prices obtained from the pricing service are adjusted if they are found to be inconsistent with relevant market data. Level 2 investment securities are predominantly agency mortgage-backed securities, certain other asset-backed securities, obligations of state and political subdivisions, corporate debt securities, agency debt securities and certain perpetual preferred securities. The fair value of securities for which there are no market trades, or where trading is inactive as compared to normal market activity, are classified within Level 3 of the fair value hierarchy. The Company determines the fair value of these securities by using a discounted cash flow methodology and incorporating observable market information, where available. These valuations are modeled by a unit within the Company’s treasury department. The valuations use assumptions regarding housing prices, interest rates and borrower performance. Inputs are refined and updated at least quarterly to reflect market developments and actual performance. The primary valuation drivers of these securities are the prepayment rates, default rates and default severities associated with the underlying collateral, as well as the discount rate used to calculate the present value of the projected cash flows. Level 3 fair values, including the assumptions used, are subject to review by senior management in corporate functions, who are independent from the modeling. The fair value measurements are also compared to fair values provided by third party pricing services and broker provided quotes, where available. Securities classified within Level 3 include non-agency mortgage-backed securities, non-agency commercial mortgage-backed securities, certain asset-backed securities and certain corporate debt securities. Mortgage Loans Held For Sale MLHFS measured at fair value, for which an active secondary market and readily available market prices exist, are initially valued at the transaction price and are subsequently valued by comparison to instruments with similar collateral and risk profiles. MLHFS are classified within Level 2. Included in mortgage banking revenue were net gains of $33 million, $27 million and $185 million for the years ended December 31, 2016, 2015 and 2014, respectively, from the changes to fair value of these MLHFS under fair value option accounting guidance. Changes in fair value due to instrument specific credit risk were immaterial. Interest income for MLHFS is measured based on contractual interest rates and reported as interest income on the Consolidated Statement of Income. Electing to measure MLHFS at fair value reduces certain timing differences and better matches changes in fair value of these assets with changes in the value of the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting. Loans The loan portfolio includes adjustable and fixed-rate loans, the fair value of which is estimated using discounted cash flow analyses and other valuation techniques. The expected cash flows of loans consider historical prepayment experiences and estimated credit losses and are discounted using current rates offered to borrowers with similar credit characteristics. Generally, loan fair values reflect Level 3 information. Fair value is provided for disclosure purposes only, with the exception of impaired collateral-based loans that are measured at fair value on a non-recurring basis utilizing the underlying collateral fair value. Mortgage Servicing Rights MSRs are valued using a discounted cash flow methodology, and are classified within Level 3. The Company determines fair value of the MSRs by projecting future cash flows for different interest rate scenarios using prepayment rates and other assumptions, and discounts these cash flows using a risk adjusted rate based on option adjusted spread levels. The MSR valuations, as well as the assumptions used, are developed by the mortgage banking division and are subject to review by senior management in corporate functions, who are independent from the modeling. The MSR valuations and assumptions are validated through comparison to trade information when available, publicly available data and industry surveys and are also compared to independent third party valuations each quarter. Risks inherent in MSR valuation include higher than expected prepayment rates and/or delayed receipt of cash flows. There is minimal observable market activity for MSRs on comparable portfolios and, therefore, the determination of fair value requires significant management judgment. Refer to Note 9 for further information on MSR valuation assumptions. Derivatives The majority of derivatives held by the Company are executed over-the-counter and are valued using standard cash flow, Black-Derman-Toy and Monte Carlo valuation techniques. The models incorporate inputs, depending on the type of derivative, including interest rate curves, foreign exchange rates and volatility. In addition, all derivative values incorporate an assessment of the risk of counterparty nonperformance, measured based on the Company’s evaluation of credit risk as well as external assessments of credit risk, where available. The Company monitors and manages its nonperformance risk by considering its ability to net derivative positions under master netting arrangements, as well as collateral received or provided under collateral arrangements. Accordingly, the Company has elected to measure the fair value of derivatives, at a counterparty level, on a net basis. The majority of the derivatives are classified within Level 2 of the fair value hierarchy, as the significant inputs to the models, including nonperformance risk, are observable. However, certain derivative transactions are with counterparties where risk of nonperformance cannot be observed in the market and, therefore, the credit valuation adjustments result in these derivatives being classified within Level 3 of the fair value hierarchy. The credit valuation adjustments for nonperformance risk are determined by the Company’s treasury department using credit assumptions provided by the risk management department. The credit assumptions are compared to actual results quarterly and are recalibrated as appropriate. The Company also has other derivative contracts that are created through its operations, including commitments to purchase and originate mortgage loans and swap agreements executed in conjunction with the sale of a portion of its Class B common shares of Visa Inc. (the “Visa swaps”). The mortgage loan commitments are valued by pricing models that include market observable and unobservable inputs, which result in the commitments being classified within Level 3 of the fair value hierarchy. The unobservable inputs include assumptions about the percentage of commitments that actually become a closed loan and the MSR value that is inherent in the underlying loan value, both of which are developed by the Company’s mortgage banking division. The closed loan percentages for the mortgage loan commitments are monitored on an on-going basis, as these percentages are also used for the Company’s economic hedging activities. The inherent MSR value for the commitments are generated by the same models used for the Company’s MSRs and thus are subject to the same processes and controls as described for the MSRs above. The Visa swaps require payments by either the Company or the purchaser of the Visa Inc. Class B common shares when there are changes in the conversion rate of the Visa Inc. Class B common shares to Visa Inc. Class A common shares, as well as quarterly payments to the purchaser based on specified terms of the agreements. Management reviews and updates the Visa swaps fair value in conjunction with its review of Visa related litigation contingencies, and the associated escrow funding. The fair value of the Visa swaps are calculated by the Company’s corporate development department using a discounted cash flow methodology which includes unobservable inputs about the timing and settlement amounts related to the resolution of certain Visa related litigation. The expected litigation resolution impacts the Visa Inc. Class B common share to Visa Inc. Class A common share conversion rate, as well as the ultimate termination date for the Visa swaps. Accordingly, the Visa swaps are classified within Level 3. Refer to Note 22 for further information on the Visa restructuring and related card association litigation. Other Financial Instruments Other financial instruments include cost method equity investments and certain community development and tax-advantaged related assets and liabilities. The majority of the Company’s cost method equity investments are in Federal Home Loan Bank and Federal Reserve Bank stock, for which the carrying amounts approximate fair value and are classified within Level 2. Investments in other equity and limited partnership funds are estimated using fund provided net asset values. These equity investments are classified within Level 3. The community development and tax-advantaged related asset balances primarily represent the underlying assets of consolidated community development and tax-advantaged entities. The community development and tax-advantaged related liabilities represent the underlying liabilities of the consolidated entities (included in long-term debt) and liabilities related to other third party interests (included in other liabilities). The carrying value of the community development and tax-advantaged related asset and other liability balances are a reasonable estimate of fair value and are classified within Level 3. Refer to Note 7 for further information on community development and tax-advantaged related assets and liabilities. Fair value is provided for disclosure purposes only. Deposit Liabilities The fair value of demand deposits, savings accounts and certain money market deposits is equal to the amount payable on demand. The fair value of fixed-rate certificates of deposit was estimated by discounting the contractual cash flow using current market rates. Deposit liabilities are classified within Level 2. Fair value is provided for disclosure purposes only. Short-term Borrowings Federal funds purchased, securities sold under agreements to repurchase, commercial paper and other short-term funds borrowed have floating rates or short-term maturities. The fair value of short-term borrowings was determined by discounting contractual cash flows using current market rates. Short-term borrowings are classified within Level 2. Included in short-term borrowings is the Company’s obligation on securities sold short, which is required to be accounted for at fair value per applicable accounting guidance. Fair value for other short-term borrowings is provided for disclosure purposes only. Long-term Debt The fair value for most long-term debt was determined by discounting contractual cash flows using current market rates. Junior subordinated debt instruments were valued using market quotes. Long-term debt is classified within Level 2. Fair value is provided for disclosure purposes only. Loan Commitments, Letters of Credit and Guarantees The fair value of commitments, letters of credit and guarantees represents the estimated costs to terminate or otherwise settle the obligations with a third party. Other loan commitments, letters of credit and guarantees are not actively traded, and the Company estimates their fair value based on the related amount of unamortized deferred commitment fees adjusted for the probable losses for these arrangements. These arrangements are classified within Level 3. Fair value is provided for disclosure purposes only. Significant Unobservable Inputs of Level 3 Assets and Liabilities The following section provides information on the significant inputs used by the Company to determine the fair value measurements of Level 3 assets and liabilities recorded at fair value on the Consolidated Balance Sheet. In addition, the following section includes a discussion of the sensitivity of the fair value measurements to changes in the significant inputs and a description of any interrelationships between these inputs for Level 3 assets and liabilities recorded at fair value on a recurring basis. The discussion below excludes nonrecurring fair value measurements of collateral value used for impairment measures for loans and OREO. These valuations utilize third party appraisal or broker price opinions, and are classified as Level 3 due to the significant judgment involved. Available-For-Sale Investment Securities The significant unobservable inputs used in the fair value measurement of the Company’s modeled Level 3 available-for-sale investment securities are prepayment rates, probability of default and loss severities associated with the underlying collateral, as well as the discount margin used to calculate the present value of the projected cash flows. Increases in prepayment rates for Level 3 securities will typically result in higher fair values, as increased prepayment rates accelerate the receipt of expected cash flows and reduce exposure to credit losses. Increases in the probability of default and loss severities will result in lower fair values, as these increases reduce expected cash flows. Discount margin is the Company’s estimate of the current market spread above the respective benchmark rate. Higher discount margin will result in lower fair values, as it reduces the present value of the expected cash flows. Prepayment rates generally move in the opposite direction of market interest rates. In the current environment, an increase in the probability of default will generally be accompanied with an increase in loss severity, as both are impacted by underlying collateral values. Discount margins are influenced by market expectations about the security’s collateral performance and, therefore, may directionally move with probability and severity of default; however, discount margins are also impacted by broader market forces, such as competing investment yields, sector liquidity, economic news, and other macroeconomic factors. The following table shows the significant valuation assumption ranges for Level 3 available-for-sale investment securities at December 31, 2016: Minimum Maximum Average Residential Prime Non-Agency Mortgage-Backed Securities (a) Estimated lifetime prepayment rates 6 % 19 % 14 % Lifetime probability of default rates – 6 4 Lifetime loss severity rates 15 65 35 Discount margin 2 7 3 Residential Non-Prime Non-Agency Mortgage-Backed Securities (b) Estimated lifetime prepayment rates 3 % 16 % 9 % Lifetime probability of default rates 4 12 7 Lifetime loss severity rates 15 80 49 Discount margin 1 10 4 (a) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (b) Includes all securities not meeting the conditions to be designated as prime. Mortgage Servicing Rights The significant unobservable inputs used in the fair value measurement of the Company’s MSRs are expected prepayments and the option adjusted spread that is added to the risk-free rate to discount projected cash flows. Significant increases in either of these inputs in isolation would result in a significantly lower fair value measurement. Significant decreases in either of these inputs in isolation would result in a significantly higher fair value measurement. There is no direct interrelationship between prepayments and option adjusted spread. Prepayment rates generally move in the opposite direction of market interest rates. Option adjusted spread is generally impacted by changes in market return requirements. The following table shows the significant valuation assumption ranges for MSRs at December 31, 2016: Minimum Maximum Average Expected prepayment 6 % 18 % 10 % Option adjusted spread 7 10 8 Derivatives The Company has two distinct Level 3 derivative portfolios: (i) the Company’s commitments to purchase and originate mortgage loans that meet the requirements of a derivative and (ii) the Company’s asset/liability and customer-related derivatives that are Level 3 due to unobservable inputs related to measurement of risk of nonperformance by the counterparty. In addition, the Company’s Visa swaps are classified within Level 3. The significant unobservable inputs used in the fair value measurement of the Company’s derivative commitments to purchase and originate mortgage loans are the percentage of commitments that actually become a closed loan and the MSR value that is inherent in the underlying loan value. A significant increase in the rate of loans that close would result in a larger derivative asset or liability. A significant increase in the inherent MSR value would result in an increase in the derivative asset or a reduction in the derivative liability. Expected loan close rates and the inherent MSR values are directly impacted by changes in market rates and will generally move in the same direction as interest rates. The following table shows the significant valuation assumption ranges for the Company’s derivative commitments to purchase and originate mortgage loans at December 31, 2016: Minimum Maximum Average Expected loan close rate 33 % 100 % 80 % Inherent MSR value (basis points per loan) (34 ) 203 113 The significant unobservable input used in the fair value measurement of certain of the Company’s asset/liability and customer-related derivatives is the credit valuation adjustment related to the risk of counterparty nonperformance. A significant increase in the credit valuation adjustment would result in a lower fair value measurement. A significant decrease in the credit valuation adjustment would result in a higher fair value measurement. The credit valuation adjustment is impacted by changes in the Company’s assessment of the counterparty’s credit position. At December 31, 2016, the minimum, maximum and average credit valuation adjustment as a percentage of the derivative contract fair value prior to adjustment was 0 percent, 96 percent and 3 percent, respectively. The significant unobservable inputs used in the fair value measurement of the Visa swaps are management’s estimate of the probability of certain litigation scenarios, and the timing of the resolution of the related litigation loss estimates in excess, or shortfall, of the Company’s proportional share of escrow funds. An increase in the loss estimate or a delay in the resolution of the related litigation would result in an increase in the derivative liability. A decrease in the loss estimate or an acceleration of the resolution of the related litigation would result in a decrease in the derivative liability. The following table summarizes the balances of assets and liabilities measured at fair value on a recurring basis: (Dollars in Millions) Level 1 Level 2 Level 3 Netting Total December 31, 2016 Available-for-sale securities U.S. Treasury and agencies $ 16,355 $ 772 $ – $ – $ 17,127 Mortgage-backed securities Residential Agency – 43,138 – – 43,138 Non-agency Prime (a) – – 242 – 242 Non-prime (b) – – 195 – 195 Commercial Agency – 15 – – 15 Asset-backed securities Other – 481 2 – 483 Obligations of state and political subdivisions – 5,039 – – 5,039 Corporate debt securities – – 9 – 9 Other investments 36 – – – 36 Total available-for-sale 16,391 49,445 448 – 66,284 Mortgage loans held for sale – 4,822 – – 4,822 Mortgage servicing rights – – 2,591 – 2,591 Derivative assets – 2,416 554 (984 ) 1,986 Other assets 183 1,137 – – 1,320 Total $ 16,574 $ 57,820 $ 3,593 $ (984 ) $ 77,003 Derivative liabilities $ 7 $ 2,469 $ 383 $ (1,185 ) $ 1,674 Short-term borrowings and other liabilities (c) 142 938 – – 1,080 Total $ 149 $ 3,407 $ 383 $ (1,185 ) $ 2,754 December 31, 2015 Available-for-sale securities U.S. Treasury and agencies $ 3,708 $ 888 $ – $ – $ 4,596 Mortgage-backed securities Residential Agency – 50,076 – – 50,076 Non-agency Prime (a) – – 318 – 318 Non-prime (b) – – 240 – 240 Commercial Agency – 52 – – 52 Asset-backed securities Collateralized debt obligations/Collateralized loan obligations – 19 – – 19 Other – 539 2 – 541 Obligations of state and political subdivisions – 5,316 – – 5,316 Corporate debt securities 102 499 9 – 610 Perpetual preferred securities 48 113 – – 161 Other investments 40 28 – – 68 Total available-for-sale 3,898 57,530 569 – 61,997 Mortgage loans held for sale – 3,110 – – 3,110 Mortgage servicing rights – – 2,512 – 2,512 Derivative assets – 1,632 615 (807 ) 1,440 Other assets 202 589 – – 791 Total $ 4,100 $ 62,861 $ 3,696 $ (807 ) $ 69,850 Derivative liabilities $ 2 $ 2,266 $ 117 $ (1,283 ) $ 1,102 Short-term borrowings (c) 122 645 – – 767 Total $ 124 $ 2,911 $ 117 $ (1,283 ) $ 1,869 (a) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (b) Includes all securities not meeting the conditions to be designated as prime. (c) Primarily represents the Company’s obligation on securities sold short required to be accounted for at fair value per applicable accounting guidance. The following table presents the changes in fair value for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31: (Dollars in Millions) Beginning Net Gains Net Gains Purchases Sales Principal Issuances Settlements End of Net Change 2016 Available-for-sale securities Mortgage-backed securities Residential non-agency Prime (a) $ 318 $ (1 ) $ – $ – $ – $ (75 ) $ – $ – $ 242 $ – Non-prime (b) 240 (1 ) (2 ) – – (42 ) – – 195 (2 ) Asset-backed securities Other 2 – – – – – – – 2 – Corporate debt securities 9 – – – – – – – 9 – Total available-for-sale 569 (2 ) (c) (2 ) (f) – – (117 ) – – 448 (2 ) Mortgage servicing rights 2,512 (488 ) (d) – 43 – – 524 (g) – 2,591 (488 ) (d) Net derivative assets and liabilities 498 332 (e) – 2 (14 ) – – (647 ) 171 (257 ) (h) 2015 Available-for-sale securities Mortgage-backed securities Residential non-agency Prime (a) $ 405 $ – $ (4 ) $ – $ – $ (83 ) $ – $ – $ 318 $ (4 ) Non-prime (b) 280 (1 ) (1 ) – – (38 ) – – 240 (1 ) Asset-backed securities Other 62 4 (2 ) – (51 ) (11 ) – – 2 – Corporate debt securities 9 – – – – – – – 9 – Total available-for-sale 756 3 (i) (7 ) (f) – (51 ) (132 ) – – 569 (5 ) Mortgage servicing rights 2,338 (487 ) (d) – 29 – – 632 (g) – 2,512 (487 ) (d) Net derivative assets and liabilities 574 707 (j) – 1 (13 ) – – (771 ) 498 135 (k) 2014 Available-for-sale securities Mortgage-backed securities Residential non-agency Prime (a) $ 478 $ – $ 15 $ – $ – $ (88 ) $ – $ – $ 405 $ 14 Non-prime (b) 297 (6 ) 19 – – (30 ) – – 280 19 Asset-backed securities Other 63 4 – 5 – (10 ) – – 62 – Corporate debt securities 9 – – – – – – – 9 – Total available-for-sale 847 (2 ) (l) 34 (f) 5 – (128 ) – – 756 33 Mortgage servicing rights 2,680 (588 ) (d) – 5 (141 ) – 382 (g) – 2,338 (588 ) (d) Net derivative assets and liabilities 445 904 (m) – 1 (4 ) – – (772 ) 574 188 (n) (a) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (b) Includes all securities not meeting the conditions to be designated as prime. (c) Approximately $(3) million included in securities gains (losses) and $1 million included in interest income. (d) Included in mortgage banking revenue. (e) Approximately $(77) million included in other noninterest income and $409 million included in mortgage banking revenue. (f) Included in changes in unrealized gains and losses on securities availa

Guarantees and Contingent Liabi

Guarantees and Contingent Liabilities	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Guarantees and Contingent Liabilities	Guarantees and Contingent Liabilities Visa Restructuring and Card Association Litigation The Company’s payment services business issues credit and debit cards and acquires credit and debit card transactions through the Visa U.S.A. Inc. card association or its affiliates (collectively “Visa”). In 2007, Visa completed a restructuring and issued shares of Visa Inc. common stock to its financial institution members in contemplation of its initial public offering (“IPO”) completed in the first quarter of 2008 (the “Visa Reorganization”). As a part of the Visa Reorganization, the Company received its proportionate number of shares of Visa Inc. common stock, which were subsequently converted to Class B shares of Visa Inc. (“Class B shares”). Visa U.S.A. Inc. (“Visa U.S.A.”) and MasterCard International (collectively, the “Card Associations”) are defendants in antitrust lawsuits challenging the practices of the Card Associations (the “Visa Litigation”). Visa U.S.A. member banks have a contingent obligation to indemnify Visa Inc. under the Visa U.S.A. bylaws (which were modified at the time of the restructuring in October 2007) for potential losses arising from the Visa Litigation. The indemnification by the Visa U.S.A. member banks has no specific maximum amount. Using proceeds from its IPO and through reductions to the conversion ratio applicable to the Class B shares held by Visa U.S.A. member banks, Visa Inc. has funded an escrow account for the benefit of member financial institutions to fund their indemnification obligations associated with the Visa Litigation. The receivable related to the escrow account is classified in other liabilities as a direct offset to the related Visa Litigation contingent liability. On October 19, 2012, Visa signed a settlement agreement to resolve class action claims associated with the multi-district interchange litigation, the largest of the remaining Visa Litigation matters. The United States District Court for the Eastern District of New York approved the settlement, but that approval was appealed by certain class members. On June 30, 2016, the United States Court of Appeals for the Second Circuit reversed the approval of the settlement and remanded the case to the district court for further proceedings consistent with the appellate ruling. On November 23, 2016, plaintiff merchants filed a petition with the United States Supreme Court asking it to review the Second Circuit’s decision to reject the settlement. At December 31, 2016, the carrying amount of the Company’s liability related to the Visa Litigation matters, net of its share of the escrow fundings, was $19 million. During 2016, the Company sold 1.5 million of its Class B shares. These sales, and any previous sales of its Class B shares, do not impact the Company’s liability for the Visa Litigation matters or the receivable related to the escrow account. Upon final settlement of the Visa Litigation, the remaining 4.9 million Class B shares held by the Company will be eligible for conversion to Class A shares of Visa Inc., which are publicly traded. The Class B shares are excluded from the Company’s financial instruments disclosures included in Note 21. Commitments to Extend Credit Commitments to extend credit are legally binding and generally have fixed expiration dates or other termination clauses. The contractual amount represents the Company’s exposure to credit loss, in the event of default by the borrower. The Company manages this credit risk by using the same credit policies it applies to loans. Collateral is obtained to secure commitments based on management’s credit assessment of the borrower. The collateral may include marketable securities, receivables, inventory, equipment and real estate. Since the Company expects many of the commitments to expire without being drawn, total commitment amounts do not necessarily represent the Company’s future liquidity requirements. In addition, the commitments include consumer credit lines that are cancelable upon notification to the consumer. The contract or notional amounts of unfunded commitments to extend credit at December 31, 2016, excluding those commitments considered derivatives, were as follows: Term (Dollars in Millions) Less Than Greater Than Total Commercial and commercial real estate loans $ 26,471 $ 98,452 $ 124,923 Corporate and purchasing card loans (a) 25,085 – 25,085 Residential mortgages 379 12 391 Retail credit card loans (a) 101,258 – 101,258 Other retail loans 13,254 22,552 35,806 Covered loans – 320 320 Other 5,558 18 5,576 (a) Primarily cancelable at the Company’s discretion. Lease Commitments Rental expense for operating leases totaled $326 million in 2016, $328 million in 2015 and $326 million in 2014. Future minimum payments, net of sublease rentals, under capitalized leases and noncancelable operating leases with initial or remaining terms of one year or more, consisted of the following at December 31, 2016: (Dollars in Millions) Capitalized Operating 2017 $ 17 $ 270 2018 16 243 2019 14 207 2020 13 166 2021 10 140 Thereafter 41 490 Total minimum lease payments 111 $ 1,516 Less amount representing interest 39 Present value of net minimum lease payments $ 72 Other Guarantees and Contingent Liabilities The following table is a summary of other guarantees and contingent liabilities of the Company at December 31, 2016: (Dollars in Millions) Collateral Carrying Amount Maximum Standby letters of credit $ – $ 61 $ 11,917 Third party borrowing arrangements – – 8 Securities lending indemnifications 3,164 – 3,083 Asset sales – 138 6,211 Merchant processing 483 48 91,040 Tender option bond program guarantee 1,129 – 1,114 Minimum revenue guarantees – – 9 Other – – 1,287 Letters of Credit Standby letters of credit are commitments the Company issues to guarantee the performance of a customer to a third party. The guarantees frequently support public and private borrowing arrangements, including commercial paper issuances, bond financings and other similar transactions. The Company also issues and confirms commercial letters of credit on behalf of customers to ensure payment or collection in connection with trade transactions. In the event of a customer’s or counterparty’s nonperformance, the Company’s credit loss exposure is similar to that in any extension of credit, up to the letter’s contractual amount. Management assesses the borrower’s credit to determine the necessary collateral, which may include marketable securities, receivables, inventory, equipment and real estate. Since the conditions requiring the Company to fund letters of credit may not occur, the Company expects its liquidity requirements to be less than the total outstanding commitments. The maximum potential future payments guaranteed by the Company under standby letter of credit arrangements at December 31, 2016, were approximately $11.9 billion with a weighted-average term of approximately 20 months. The estimated fair value of standby letters of credit was approximately $61 million at December 31, 2016. The contract or notional amount of letters of credit at December 31, 2016, were as follows: Term (Dollars in Millions) Less Than Greater Than Total Standby $ 5,552 $ 6,365 $ 11,917 Commercial 328 18 346 Guarantees Guarantees are contingent commitments issued by the Company to customers or other third parties. The Company’s guarantees primarily include parent guarantees related to subsidiaries’ third party borrowing arrangements; third party performance guarantees inherent in the Company’s business operations, such as indemnified securities lending programs and merchant charge-back guarantees; and indemnification or buy-back provisions related to certain asset sales. For certain guarantees, the Company has recorded a liability related to the potential obligation, or has access to collateral to support the guarantee or through the exercise of other recourse provisions can offset some or all of the maximum potential future payments made under these guarantees. Third Party Borrowing Arrangements Commitments from Securities Lending Asset Sales The maximum potential future payments do not include loan sales where the Company provides standard representation and warranties to the buyer against losses related to loan underwriting documentation defects that may have existed at the time of sale that generally are identified after the occurrence of a triggering event such as delinquency. For these types of loan sales, the maximum potential future payments is generally the unpaid principal balance of loans sold measured at the end of the current reporting period. Actual losses will be significantly less than the maximum exposure, as only a fraction of loans sold will have a representation and warranty breach, and any losses on repurchase would generally be mitigated by any collateral held against the loans. The Company regularly sells loans to GSEs as part of its mortgage banking activities. The Company provides customary representations and warranties to the GSEs in conjunction with these sales. These representations and warranties generally require the Company to repurchase assets if it is subsequently determined that a loan did not meet specified criteria, such as a documentation deficiency or rescission of mortgage insurance. If the Company is unable to cure or refute a repurchase request, the Company is generally obligated to repurchase the loan or otherwise reimburse the counterparty for losses. At December 31, 2016, the Company had reserved $19 million for potential losses from representation and warranty obligations, compared with $30 million at December 31, 2015. The Company’s reserve reflects management’s best estimate of losses for representation and warranty obligations. The Company’s repurchase reserve is modeled at the loan level, taking into consideration the individual credit quality and borrower activity that has transpired since origination. The model applies credit quality and economic risk factors to derive a probability of default and potential repurchase that are based on the Company’s historical loss experience, and estimates loss severity based on expected collateral value. The Company also considers qualitative factors that may result in anticipated losses differing from historical loss trends. As of December 31, 2016 and 2015, the Company had $7 million and $12 million, respectively, of unresolved representation and warranty claims from the GSEs. The Company does not have a significant amount of unresolved claims from investors other than the GSEs. Merchant Processing A cardholder, through its issuing bank, generally has until the later of up to four months after the date the transaction is processed or the receipt of the product or service to present a charge-back to the Company as the merchant processor. The absolute maximum potential liability is estimated to be the total volume of credit card transactions that meet the associations’ requirements to be valid charge-back transactions at any given time. Management estimates that the maximum potential exposure for charge-backs would approximate the total amount of merchant transactions processed through the credit card associations for the last four months. For the last four months this amount totaled approximately $91.0 billion. In most cases, this contingent liability is unlikely to arise, as most products and services are delivered when purchased and amounts are refunded when items are returned to merchants. However, where the product or service has been purchased but is not provided until a future date (“future delivery”), the potential for this contingent liability increases. To mitigate this risk, the Company may require the merchant to make an escrow deposit, place maximum volume limitations on future delivery transactions processed by the merchant at any point in time, or require various credit enhancements (including letters of credit and bank guarantees). Also, merchant processing contracts may include event triggers to provide the Company more financial and operational control in the event of financial deterioration of the merchant. The Company currently processes card transactions in the United States, Canada, Europe and Mexico through wholly-owned subsidiaries and joint ventures with other financial institutions. In the event a merchant was unable to fulfill product or services subject to future delivery, such as airline tickets, the Company could become financially liable for refunding tickets purchased through the credit card associations under the charge-back provisions. Charge-back risk related to these merchants is evaluated in a manner similar to credit risk assessments and, as such, merchant processing contracts contain various provisions to protect the Company in the event of default. At December 31, 2016, the value of airline tickets purchased to be delivered at a future date was $5.7 billion. The Company held collateral of $375 million in escrow deposits, letters of credit and indemnities from financial institutions, and liens on various assets. With respect to future delivery risk for other merchants, the Company held $22 million of merchant escrow deposits as collateral. In addition to specific collateral or other credit enhancements, the Company maintains a liability for its implied guarantees associated with future delivery. At December 31, 2016, the liability was $35 million primarily related to these airline processing arrangements. In the normal course of business, the Company has unresolved charge-backs. The Company assesses the likelihood of its potential liability based on the extent and nature of unresolved charge-backs and its historical loss experience. At December 31, 2016, the Company held $86 million of merchant escrow deposits as collateral and had a recorded liability for potential losses of $13 million. Tender Option Bond Program Guarantee Minimum Revenue Guarantees Other Guarantees and Commitments The Company has also made other financial performance guarantees and commitments primarily related to the operations of its subsidiaries. At December 31, 2016, the maximum potential future payments guaranteed or committed by the Company under these arrangements were approximately $606 million. Litigation and Regulatory Matters The Company is subject to various litigation and regulatory matters that arise in the ordinary course of its business. The Company establishes reserves for such matters when potential losses become probable and can be reasonably estimated. The Company believes the ultimate resolution of existing legal and regulatory matters will not have a material adverse effect on the financial condition, results of operations or cash flows of the Company. However, in light of the inherent uncertainties involved in these matters, it is possible that the ultimate resolution of one or more of these matters may have a material adverse effect on the Company’s results from operations for a particular period, and future changes in circumstances or additional information could result in additional accruals or resolution in excess of established accruals, which could adversely affect the Company’s results from operations, potentially materially. Litigation Matters Regulatory Matters The Company is continually subject to examinations, inquiries and investigations in areas of increasing regulatory scrutiny, such as compliance, risk management, third party risk management and consumer protection. The Company is cooperating fully with all pending examinations, inquiries and investigations, any of which could lead to administrative or legal proceedings or settlements. Remedies in these proceedings or settlements may include fines, penalties, restitution or alterations in the Company’s business practices (which may increase the Company’s operating expenses and decrease its revenue). In October 2015, the Company entered into a Consent Order with the Office of the Comptroller of the Currency (the “OCC”) concerning deficiencies in its Bank Secrecy Act/anti-money laundering compliance program, and requiring an ongoing review of that program. If the Company does not satisfactorily correct the identified deficiencies, it could be required to enter into further orders, pay fines or penalties or further modify its business practices. Some of the compliance program enhancements and other actions required by the Consent Order have already been, or are currently in the process of being, implemented, and are not expected to be material to the Company. In April 2011, the Company and certain other large financial institutions entered into Consent Orders with the OCC and the Board of Governors of the Federal Reserve System relating to residential mortgage servicing and foreclosure practices. In June 2015, the Company entered into an agreement to amend the 2011 Consent Order it had with the OCC. The OCC terminated the amended Consent Order in February 2016. Depending on the Company’s progress toward addressing the requirements of the 2011 Consent Order it has with the Board of Governors of the Federal Reserve System, the Company may be required to enter into further orders and settlements, pay additional fines or penalties, make restitution or further modify the Company’s business practices (which may increase the Company’s operating expenses and decrease its revenue). Outlook

U.S. Bancorp (Parent Company)

U.S. Bancorp (Parent Company)	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
U.S. Bancorp (Parent Company)	NOTE 23 U.S. Bancorp (Parent Company) Condensed Balance Sheet At December 31 (Dollars in Millions) 2016 2015 Assets Due from banks, principally interest-bearing $ 7,800 $ 9,426 Available-for-sale securities 225 352 Investments in bank subsidiaries 44,955 41,708 Investments in nonbank subsidiaries 2,326 2,060 Advances to bank subsidiaries 3,800 3,150 Advances to nonbank subsidiaries 1,265 823 Other assets 1,052 983 Total assets $ 61,423 $ 58,502 Liabilities and Shareholders’ Equity Short-term funds borrowed $ 22 $ 25 Long-term debt 13,045 11,453 Other liabilities 1,058 893 Shareholders’ equity 47,298 46,131 Total liabilities and shareholders’ equity $ 61,423 $ 58,502 Condensed Statement of Income Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Income Dividends from bank subsidiaries $ 2,100 $ 3,900 $ 3,850 Dividends from nonbank subsidiaries 4 3 38 Interest from subsidiaries 140 120 123 Other income 57 55 64 Total income 2,301 4,078 4,075 Expense Interest expense 327 292 335 Other expense 123 105 90 Total expense 450 397 425 Income before income taxes and equity in undistributed income of subsidiaries 1,851 3,681 3,650 Applicable income taxes (97 ) (207 ) (94 ) Income of parent company 1,948 3,888 3,744 Equity in undistributed income of subsidiaries 3,940 1,991 2,107 Net income attributable to U.S. Bancorp $ 5,888 $ 5,879 $ 5,851 Condensed Statement of Cash Flows Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Operating Activities Net income attributable to U.S. Bancorp $ 5,888 $ 5,879 $ 5,851 Adjustments to reconcile net income to net cash provided by operating activities Equity in undistributed income of subsidiaries (3,940 ) (1,991 ) (2,107 ) Other, net 75 507 48 Net cash provided by operating activities 2,023 4,395 3,792 Investing Activities Proceeds from sales and maturities of investment securities 232 153 46 Purchases of investment securities (120 ) (47 ) (39 ) Net (increase) decrease in short-term advances to subsidiaries (442 ) (273 ) 984 Long-term advances to subsidiaries (750 ) (500 ) (1,800 ) Principal collected on long-term advances to subsidiaries 100 – 1,400 Other, net (12 ) (6 ) (52 ) Net cash (used in) provided by investing activities (992 ) (673 ) 539 Financing Activities Net (decrease) increase in short-term borrowings (3 ) (152 ) 39 Proceeds from issuance of long-term debt 3,550 – 3,250 Principal payments or redemption of long-term debt (1,926 ) (1,750 ) (1,500 ) Proceeds from issuance of preferred stock – 745 – Proceeds from issuance of common stock 355 295 453 Repurchase of common stock (2,556 ) (2,190 ) (2,200 ) Cash dividends paid on preferred stock (267 ) (242 ) (243 ) Cash dividends paid on common stock (1,810 ) (1,777 ) (1,726 ) Net cash used in financing activities (2,657 ) (5,071 ) (1,927 ) Change in cash and due from banks (1,626 ) (1,349 ) 2,404 Cash and due from banks at beginning of year 9,426 10,775 8,371 Cash and due from banks at end of year $ 7,800 $ 9,426 $ 10,775 Transfer of funds (dividends, loans or advances) from bank subsidiaries to the Company is restricted. Federal law requires loans to the Company or its affiliates to be secured and generally limits loans to the Company or an individual affiliate to 10 percent of each bank’s unimpaired capital and surplus. In the aggregate, loans to the Company and all affiliates cannot exceed 20 percent of each bank’s unimpaired capital and surplus. Dividend payments to the Company by its subsidiary bank are subject to regulatory review and statutory limitations and, in some instances, regulatory approval. In general, dividends by the Company’s bank subsidiary to the parent company are limited by rules which compare dividends to net income for regulatorily-defined periods. Furthermore, dividends are restricted by minimum capital constraints for all national banks.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE 24 Subsequent Events The Company has evaluated the impact of events that have occurred subsequent to December 31, 2016 through the date the consolidated financial statements were filed with the United States Securities and Exchange Commission. Based on this evaluation, the Company has determined none of these events were required to be recognized or disclosed in the consolidated financial statements and related notes.

Significant Accounting Polici32

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of the Company and its subsidiaries and all variable interest entities (“VIEs”) for which the Company has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance, and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. Consolidation eliminates all significant intercompany accounts and transactions. Certain items in prior periods have been reclassified to conform to the current presentation.
Uses of Estimates	Uses of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual experience could differ from those estimates.
Business Segments	Business Segments Within the Company, financial performance is measured by major lines of business based on the products and services provided to customers through its distribution channels. The Company has five reportable operating segments: Wholesale Banking and Commercial Real Estate Wholesale Banking and Commercial Real Estate offers lending, equipment finance and small-ticket leasing, depository services, treasury management, capital markets services, international trade services and other financial services to middle market, large corporate, commercial real estate, financial institution, non-profit and public sector clients. Consumer and Small Business Banking Consumer and Small Business Banking delivers products and services through banking offices, telephone servicing and sales, on-line services, direct mail, ATM processing and mobile devices, such as mobile phones and tablet computers. It encompasses community banking, metropolitan banking and indirect lending, as well as mortgage banking. Wealth Management and Securities Services Wealth Management and Securities Services provides private banking, financial advisory services, investment management, retail brokerage services, insurance, trust, custody and fund servicing through five businesses: Wealth Management, Corporate Trust Services, U.S. Bancorp Asset Management, Institutional Trust & Custody and Fund Services. Payment Services Payment Services includes consumer and business credit cards, stored-value cards, debit cards, corporate, government and purchasing card services, consumer lines of credit and merchant processing. Treasury and Corporate Support Treasury and Corporate Support includes the Company’s investment portfolios, funding, capital management, interest rate risk management, income taxes not allocated to business lines, including most investments in tax-advantaged projects, and the residual aggregate of those expenses associated with corporate activities that are managed on a consolidated basis. Segment Results Accounting policies for the lines of business are the same as those used in preparation of the consolidated financial statements with respect to activities specifically attributable to each business line. However, the preparation of business line results requires management to allocate funding costs and benefits, expenses and other financial elements to each line of business. For details of these methodologies and segment results, see “Basis for Financial Presentation” and Table 25 “Line of Business Financial Performance” included in Management’s Discussion and Analysis which is incorporated by reference into these Notes to Consolidated Financial Statements.
Securities	Securities Realized gains or losses on securities are determined on a trade date basis based on the specific amortized cost of the investments sold. Trading Securities Debt and equity securities held for resale are classified as trading securities and are included in other assets and reported at fair value. Changes in fair value and realized gains or losses are reported in noninterest income. Available-for-sale Securities These securities are not trading securities but may be sold before maturity in response to changes in the Company’s interest rate risk profile, funding needs, demand for collateralized deposits by public entities or other reasons. Available-for-sale securities are carried at fair value with unrealized net gains or losses reported within other comprehensive income (loss). Declines in fair value for credit-related other-than-temporary impairment, if any, are reported in noninterest income. Held-to-maturity Securities Debt securities for which the Company has the positive intent and ability to hold to maturity are reported at historical cost adjusted for amortization of premiums and accretion of discounts. Declines in fair value for credit-related other-than-temporary impairment, if any, are reported in noninterest income. Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase Securities purchased under agreements to resell and securities sold under agreements to repurchase are accounted for as collateralized financing transactions with a receivable or payable recorded at the amounts at which the securities were acquired or sold, plus accrued interest. Collateral requirements are continually monitored and additional collateral is received or provided as required. The Company records a receivable or payable for cash collateral paid or received.
Equity Investments in Operating Entities	Equity Investments in Operating Entities Equity investments in public entities in which the Company’s ownership is less than 20 percent are generally accounted for as available-for-sale securities and are carried at fair value. Similar investments in private entities are accounted for using the cost method. Investments in entities where the Company has a significant influence (generally between 20 percent and 50 percent ownership), but does not control the entity, are accounted for using the equity method. Investments in limited partnerships and limited liability companies where the Company’s ownership interest is greater than 5 percent are accounted for using the equity method. All equity investments are evaluated for impairment at least annually and more frequently if certain criteria are met.
Loans	Loans The Company offers a broad array of lending products and categorizes its loan portfolio into three segments, which is the level at which it develops and documents a systematic methodology to determine the allowance for credit losses. The Company’s three loan portfolio segments are commercial lending, consumer lending and covered loans. The Company further disaggregates its loan portfolio segments into various classes based on their underlying risk characteristics. The two classes within the commercial lending segment are commercial loans and commercial real estate loans. The three classes within the consumer lending segment are residential mortgages, credit card loans and other retail loans. The covered loan segment consists of only one class. The Company’s accounting methods for loans differ depending on whether the loans are originated or purchased, and for purchased loans, whether the loans were acquired at a discount related to evidence of credit deterioration since date of origination. Originated Loans Held for Investment Loans the Company originates as held for investment are reported at the principal amount outstanding, net of unearned income, net deferred loan fees or costs, and any direct principal charge-offs. Interest income is accrued on the unpaid principal balances as earned. Loan and commitment fees and certain direct loan origination costs are deferred and recognized over the life of the loan and/or commitment period as yield adjustments. Purchased Loans All purchased loans (non-impaired and impaired) acquired after January 1, 2009 are initially measured at fair value as of the acquisition date in accordance with applicable authoritative accounting guidance. Credit discounts are included in the determination of fair value. An allowance for credit losses is not recorded at the acquisition date for loans purchased after January 1, 2009. In accordance with applicable authoritative accounting guidance, purchased non-impaired loans acquired in a business combination prior to January 1, 2009 were generally recorded at the predecessor’s carrying value including an allowance for credit losses. In determining the acquisition date fair value of purchased impaired loans, and in subsequent accounting, the Company generally aggregates purchased consumer loans and certain smaller balance commercial loans into pools of loans with common risk characteristics, while accounting for larger balance commercial loans individually. Expected cash flows at the purchase date in excess of the fair value of loans are recorded as interest income over the life of the loans if the timing and amount of the future cash flows is reasonably estimable. Subsequent to the purchase date, increases in cash flows over those expected at the purchase date are recognized as interest income prospectively. The present value of any decreases in expected cash flows, other than from decreases in variable interest rates, after the purchase date is recognized by recording an allowance for credit losses. Revolving loans, including lines of credit and credit cards loans, and leases are excluded from purchased impaired loans accounting. For purchased loans acquired after January 1, 2009 that are not deemed impaired at acquisition, credit discounts representing the principal losses expected over the life of the loan are a component of the initial fair value. Subsequent to the purchase date, the methods utilized to estimate the required allowance for credit losses for these loans is similar to originated loans; however, the Company records a provision for credit losses only when the required allowance exceeds any remaining credit discounts. The remaining differences between the purchase price and the unpaid principal balance at the date of acquisition are recorded in interest income over the life of the loans. Covered Assets Loans covered under loss sharing or similar credit protection agreements with the Federal Deposit Insurance Corporation (“FDIC”) are reported in loans along with the related indemnification asset. Foreclosed real estate covered under similar agreements is recorded in other assets. In accordance with applicable authoritative accounting guidance effective for the Company beginning January 1, 2009, all purchased loans and related indemnification assets are recorded at fair value at the date of purchase. Effective January 1, 2013, the Company amortizes any reduction in expected cash flows from the FDIC resulting from increases in expected cash flows from the covered assets (when there are no previous valuation allowances to reverse) over the shorter of the remaining contractual term of the indemnification agreements or the remaining life of the covered assets. Prior to January 1, 2013, the Company considered such increases in expected cash flows of purchased loans and decreases in expected cash flows of the FDIC indemnification assets together and recognized them over the remaining life of the loans. Commitments to Extend Credit Unfunded commitments for residential mortgage loans intended to be held for sale are considered derivatives and recorded in other assets and other liabilities on the Consolidated Balance Sheet at fair value with changes in fair value recorded in noninterest income. All other unfunded loan commitments are not considered derivatives and are not reported on the Consolidated Balance Sheet. For loans purchased after January 1, 2009, the fair value of the unfunded credit commitments is generally considered in the determination of the fair value of the loans recorded at the date of acquisition. Reserves for credit exposure on all other unfunded credit commitments are recorded in other liabilities. Allowance for Credit Losses The allowance for credit losses is established for probable and estimable losses incurred in the Company’s loan and lease portfolio, including unfunded credit commitments, and includes certain amounts that do not represent loss exposure to the Company because those losses are recoverable under loss sharing agreements with the FDIC. The allowance for credit losses is increased through provisions charged to operating earnings and reduced by net charge-offs. Management evaluates the allowance each quarter to ensure it appropriately reserves for incurred losses. The allowance recorded for loans in the commercial lending segment is based on reviews of individual credit relationships and considers the migration analysis of commercial lending segment loans and actual loss experience. In the migration analysis applied to risk rated loan portfolios, the Company currently examines up to a 16-year period of loss experience. For each loan type, this historical loss experience is adjusted as necessary to consider any relevant changes in portfolio composition, lending policies, underwriting standards, risk management practices or economic conditions. The results of the analysis are evaluated quarterly to confirm an appropriate historical time frame is selected for each commercial loan type. The allowance recorded for impaired loans greater than $5 million in the commercial lending segment is based on an individual loan analysis utilizing expected cash flows discounted using the original effective interest rate, the observable market price of the loan, or the fair value of the collateral, less selling costs, for collateral-dependent loans, rather than the migration analysis. The allowance recorded for all other commercial lending segment loans is determined on a homogenous pool basis and includes consideration of product mix, risk characteristics of the portfolio, bankruptcy experience, portfolio growth and historical losses, adjusted for current trends. The Company also considers the impacts of any loan modifications made to commercial lending segment loans and any subsequent payment defaults to its expectations of cash flows, principal balance, and current expectations about the borrower’s ability to pay in determining the allowance for credit losses. The allowance recorded for Troubled Debt Restructuring (“TDR”) loans and purchased impaired loans in the consumer lending segment is determined on a homogenous pool basis utilizing expected cash flows discounted using the original effective interest rate of the pool, or the prior quarter effective rate, respectively. The allowance for collateral-dependent loans in the consumer lending segment is determined based on the fair value of the collateral less costs to sell. The allowance recorded for all other consumer lending segment loans is determined on a homogenous pool basis and includes consideration of product mix, risk characteristics of the portfolio, bankruptcy experience, delinquency status, refreshed loan-to-value ratios when possible, portfolio growth and historical losses, adjusted for current trends. The Company also considers any modifications made to consumer lending segment loans including the impacts of any subsequent payment defaults since modification in determining the allowance for credit losses, such as the borrower’s ability to pay under the restructured terms, and the timing and amount of payments. The allowance for the covered loan segment is evaluated each quarter in a manner similar to that described for non-covered loans and reflects decreases in expected cash flows of those loans after the acquisition date. The provision for credit losses for covered loans considers the indemnification provided by the FDIC. In addition, subsequent payment defaults on loan modifications considered TDRs are considered in the underlying factors used in the determination of the appropriateness of the allowance for credit losses. For each loan segment, the Company estimates future loan charge-offs through a variety of analysis, trends and underlying assumptions. With respect to the commercial lending segment, TDRs may be collectively evaluated for impairment where observed performance history, including defaults, is a primary driver of the loss allocation. For commercial TDRs individually evaluated for impairment, attributes of the borrower are the primary factors in determining the allowance for credit losses. However, historical loss experience is also incorporated into the allowance methodology applied to this category of loans. With respect to the consumer lending segment, performance of the portfolio, including defaults on TDRs, is considered when estimating future cash flows. The Company’s methodology for determining the appropriate allowance for credit losses for each loan segment also considers the imprecision inherent in the methodologies used. As a result, in addition to the amounts determined under the methodologies described above, management also considers the potential impact of other qualitative factors which include, but are not limited to, economic factors; geographic and other concentration risks; delinquency and nonaccrual trends; current business conditions; changes in lending policy, underwriting standards and other relevant business practices; results of internal review; and the regulatory environment. The consideration of these items results in adjustments to allowance amounts included in the Company’s allowance for credit losses for each of the above loan segments. The Company also assesses the credit risk associated with off-balance sheet loan commitments, letters of credit, and derivatives. Credit risk associated with derivatives is reflected in the fair values recorded for those positions. The liability for off-balance sheet credit exposure related to loan commitments and other credit guarantees is included in other liabilities. Because business processes and credit risks associated with unfunded credit commitments are essentially the same as for loans, the Company utilizes similar processes to estimate its liability for unfunded credit commitments. Credit Quality The credit quality of the Company’s loan portfolios is assessed as a function of net credit losses, levels of nonperforming assets and delinquencies, and credit quality ratings as defined by the Company. For all loan classes, loans are considered past due based on the number of days delinquent except for monthly amortizing loans which are classified delinquent based upon the number of contractually required payments not made (for example, two missed payments is considered 30 days delinquent). When a loan is placed on nonaccrual status, unpaid accrued interest is reversed, reducing interest income in the current period. Commercial lending segment loans are generally placed on nonaccrual status when the collection of principal and interest has become 90 days past due or is otherwise considered doubtful. Commercial lending segment loans are generally fully or partially charged down to the fair value of the collateral securing the loan, less costs to sell, when the loan is placed on nonaccrual. Consumer lending segment loans are generally charged-off at a specific number of days or payments past due. Residential mortgages and other retail loans secured by 1-4 family properties are generally charged down to the fair value of the collateral securing the loan, less costs to sell, at 180 days past due. Residential mortgage loans and lines in a first lien position are placed on nonaccrual status in instances where a partial charge-off occurs unless the loan is well secured and in the process of collection. Residential mortgage loans and lines in a junior lien position secured by 1-4 family For all loan classes, interest payments received on nonaccrual loans are generally recorded as a reduction to a loan’s carrying amount while a loan is on nonaccrual and are recognized as interest income upon payoff of the loan. However, interest income may be recognized for interest payments if the remaining carrying amount of the loan is believed to be collectible. In certain circumstances, loans in any class may be restored to accrual status, such as when a loan has demonstrated sustained repayment performance or no amounts are past due and prospects for future payment are no longer in doubt; or when the loan becomes well secured and is in the process of collection. Loans where there has been a partial charge-off may be returned to accrual status if all principal and interest (including amounts previously charged-off) is expected to be collected and the loan is current. Covered loans not considered to be purchased impaired are evaluated for delinquency, nonaccrual status and charge-off consistent with the class of loan they would be included in had the loss share coverage not been in place. Generally, purchased impaired loans are considered accruing loans. However, the timing and amount of future cash flows for some loans is not reasonably estimable, and those loans are classified as nonaccrual loans with interest income not recognized until the timing and amount of the future cash flows can be reasonably estimated. The Company classifies its loan portfolios using internal credit quality ratings on a quarterly basis. These ratings include: pass, special mention and classified, and are an important part of the Company’s overall credit risk management process and evaluation of the allowance for credit losses. Loans with a pass rating represent those not classified on the Company’s rating scale for problem credits, as minimal credit risk has been identified. Special mention loans are those that have a potential weakness deserving management’s close attention. Classified loans are those where a well-defined weakness has been identified that may put full collection of contractual cash flows at risk. It is possible that others, given the same information, may reach different reasonable conclusions regarding the credit quality rating classification of specific loans. Troubled Debt Restructurings In certain circumstances, the Company may modify the terms of a loan to maximize the collection of amounts due when a borrower is experiencing financial difficulties or is expected to experience difficulties in the near-term. Concessionary modifications are classified as TDRs unless the modification results in only an insignificant delay in payments to be received. The Company recognizes interest on TDRs if the borrower complies with the revised terms and conditions as agreed upon with the Company and has demonstrated repayment performance at a level commensurate with the modified terms over several payment cycles, which is generally six months or greater. To the extent a previous restructuring was insignificant, the Company considers the cumulative effect of past restructurings related to the receivable when determining whether a current restructuring is a TDR. Loans classified as TDRs are considered impaired loans for reporting and measurement purposes. The Company has implemented certain restructuring programs that may result in TDRs. However, many of the Company’s TDRs are also determined on a case-by-case basis in connection with ongoing loan collection processes. For the commercial lending segment, modifications generally result in the Company working with borrowers on a case-by-case basis. Commercial and commercial real estate modifications generally include extensions of the maturity date and may be accompanied by an increase or decrease to the interest rate, which may not be deemed a market rate of interest. In addition, the Company may work with the borrower in identifying other changes that mitigate loss to the Company, which may include additional collateral or guarantees to support the loan. To a lesser extent, the Company may waive contractual principal. The Company classifies all of the above concessions as TDRs to the extent the Company determines that the borrower is experiencing financial difficulty. Modifications for the consumer lending segment are generally part of programs the Company has initiated. The Company participates in the United States Department of Treasury Home Affordable Modification Program (“HAMP”). HAMP gives qualifying homeowners an opportunity to permanently modify residential mortgage loans and achieve more affordable monthly payments, with the United States Department of Treasury compensating the Company for a portion of the reduction in monthly amounts due from borrowers participating in this program. The Company also modifies residential mortgage loans under Federal Housing Administration, United States Department of Veterans Affairs, or its own internal programs. Under these programs, the Company provides concessions to qualifying borrowers experiencing financial difficulties. The concessions may include adjustments to interest rates, conversion of adjustable rates to fixed rates, extension of maturity dates or deferrals of payments, capitalization of accrued interest and/or outstanding advances, or in limited situations, partial forgiveness of loan principal. In most instances, participation in residential mortgage loan restructuring programs requires the customer to complete a short-term trial period. A permanent loan modification is contingent on the customer successfully completing the trial period arrangement and the loan documents are not modified until that time. The Company reports loans in a trial period arrangement as TDRs and continues to report them as TDRs after the trial period. Credit card and other retail loan TDRs are generally part of distinct restructuring programs providing customers experiencing financial difficulty with modifications whereby balances may be amortized up to 60 months, and generally include waiver of fees and reduced interest rates. In addition, the Company considers secured loans to consumer borrowers that have debt discharged through bankruptcy where the borrower has not reaffirmed the debt to be TDRs. Modifications to loans in the covered segment are similar in nature to that described above for non-covered loans, and the evaluation and determination of TDR status is similar, except that acquired loans restructured after acquisition are not considered TDRs for accounting and disclosure purposes if the loans evidenced credit deterioration as of the acquisition date and are accounted for in pools. Losses associated with the modification on covered loans, including the economic impact of interest rate reductions, are generally eligible for reimbursement under loss sharing agreements with the FDIC. Impaired Loans For all loan classes, a loan is considered to be impaired when, based on current events or information, it is probable the Company will be unable to collect all amounts due per the contractual terms of the loan agreement. Impaired loans include all nonaccrual and TDR loans. For all loan classes, interest income on TDR loans is recognized under the modified terms and conditions if the borrower has demonstrated repayment performance at a level commensurate with the modified terms over several payment cycles. Interest income is generally not recognized on other impaired loans until the loan is paid off. However, interest income may be recognized for interest payments if the remaining carrying amount of the loan is believed to be collectible. Factors used by the Company in determining whether all principal and interest payments due on commercial and commercial real estate loans will be collected and, therefore, whether those loans are impaired include, but are not limited to, the financial condition of the borrower, collateral and/or guarantees on the loan, and the borrower’s estimated future ability to pay based on industry, geographic location and certain financial ratios. The evaluation of impairment on residential mortgages, credit card loans and other retail loans is primarily driven by delinquency status of individual loans or whether a loan has been modified, and considers any government guarantee where applicable. Individual covered loans, whose future losses are covered by loss sharing agreements with the FDIC that substantially reduce the risk of credit losses to the Company, are evaluated for impairment and accounted for in a manner consistent with the class of loan they would have been included in had the loss sharing coverage not been in place. Leases The Company’s lease portfolio includes both direct financing and leveraged leases. The net investment in direct financing leases is the sum of all minimum lease payments and estimated residual values, less unearned income. Unearned income is recorded in interest income over the terms of the leases to produce a level yield. The investment in leveraged leases is the sum of all lease payments, less nonrecourse debt payments, plus estimated residual values, less unearned income. Income from leveraged leases is recognized over the term of the leases based on the unrecovered equity investment. Residual values on leased assets are reviewed regularly for other-than-temporary impairment. Residual valuations for retail automobile leases are based on independent assessments of expected used car sale prices at the end-of-term. Impairment tests are conducted based on these valuations considering the probability of the lessee returning the asset to the Company, re-marketing efforts, insurance coverage and ancillary fees and costs. Valuations for commercial leases are based upon external or internal management appraisals. When there is impairment of the Company’s interest in the residual value of a leased asset, the carrying value is reduced to the estimated fair value with the writedown recognized in the current period. Other Real Estate Other real estate owned (“OREO”) is included in other assets, and is property acquired through foreclosure or other proceedings on defaulted loans. OREO is initially recorded at fair value, less estimated selling costs. The fair value of OREO is evaluated regularly and any decreases in value along with holding costs, such as taxes and insurance, are reported in noninterest expense.
Indemnification Assets Related to FDIC Loss-Sharing Agreements	Effective January 1, 2013, the Company amortizes any reduction in expected cash flows from the FDIC resulting from increases in expected cash flows from the covered assets (when there are no previous valuation allowances to reverse) over the shorter of the remaining contractual term of the indemnification agreements or the remaining life of the covered assets. Prior to January 1, 2013, the Company considered such increases in expected cash flows of purchased loans and decreases in expected cash flows of the FDIC indemnification assets together and recognized them over the remaining life of the loans.
Loans Held for Sale	Loans Held For Sale Loans held for sale (“LHFS”) represent mortgage loans intended to be sold in the secondary market and other loans that management has an active plan to sell. LHFS are carried at the lower-of-cost-or-fair value as determined on an aggregate basis by type of loan with the exception of loans for which the Company has elected fair value accounting, which are carried at fair value. The credit component of any writedowns upon the transfer of loans to LHFS is reflected in loan charge-offs. Where an election is made to carry the LHFS at fair value, any change in fair value is recognized in noninterest income. Where an election is made to carry LHFS at lower-of-cost-or-fair value, any further decreases are recognized in noninterest income and increases in fair value above the loan cost basis are not recognized until the loans are sold. Fair value elections are made at the time of origination or purchase based on the Company’s fair value election policy. The Company has elected fair value accounting for substantially all its mortgage loans held for sale (“MLHFS”).
Derivative Financial Instruments	Derivative Financial Instruments In the ordinary course of business, the Company enters into derivative transactions to manage various risks and to accommodate the business requirements of its customers. Derivative instruments are reported in other assets or other liabilities at fair value. Changes in a derivative’s fair value are recognized currently in earnings unless specific hedge accounting criteria are met. All derivative instruments that qualify and are designated for hedge accounting are recorded at fair value and classified as either a hedge of the fair value of a recognized asset or liability (“fair value hedge”); a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”); or a hedge of the volatility of a net investment in foreign operations driven by changes in foreign currency exchange rates (“net investment hedge”). Changes in the fair value of a derivative that is highly effective and designated as a fair value hedge, and the offsetting changes in the fair value of the hedged item, are recorded in earnings. Changes in the fair value of a derivative that is highly effective and designated as a cash flow hedge are recorded in other comprehensive income (loss) until cash flows of the hedged item are realized. Any change in fair value resulting from hedge ineffectiveness is immediately recorded in noninterest income. Changes in the fair value of net investment hedges that are highly effective are recorded in other comprehensive income (loss). The Company performs an assessment, at inception and, at a minimum, quarterly thereafter, to determine the effectiveness of the derivative in offsetting changes in the value or cash flows of the hedged item(s). If a derivative designated as a cash flow hedge is terminated or ceases to be highly effective, the gain or loss in other comprehensive income (loss) is amortized to earnings over the period the forecasted hedged transactions impact earnings. If a hedged forecasted transaction is no longer probable, hedge accounting is ceased and any gain or loss included in other comprehensive income (loss) is reported in earnings immediately, unless the forecasted transaction is at least reasonably possible of occurring, whereby the amounts remain within other comprehensive income (loss).
Revenue Recognition	Revenue Recognition The Company recognizes revenue as it is earned based on contractual terms, as transactions occur, or as services are provided and collectability is reasonably assured. In certain circumstances, noninterest income is reported net of associated expenses that are directly related to variable volume-based sales or revenue sharing arrangements or when the Company acts on an agency basis for others. Certain specific policies include the following: Credit and Debit Card Revenue Credit and debit card revenue includes interchange from consumer credit and debit cards processed through card association networks, annual fees, and other transaction and account management fees. Interchange rates are generally set by the credit card associations and based on purchase volumes and other factors. The Company records interchange as transactions occur. Transaction and account management fees are recognized as transactions occur or services are provided, except for annual fees which are recognized over the applicable period. Volume-related payments to partners and credit card associations and costs for rewards programs are also recorded within credit and debit card revenue when earned by the partner or customer. Corporate Payment Products Revenue Corporate payment products revenue primarily includes interchange from corporate and purchasing cards processed through card association networks and revenue from proprietary network transactions. The Company records corporate payment products revenue as transactions occur. Volume-related payments to customers and credit card associations are also recorded within corporate payment products revenue when earned by the customer or card association. Merchant Processing Services Merchant processing services revenue consists principally of merchant discount and other transaction and account management fees charged to merchants for the electronic processing of card association network transactions, net of interchange paid to the card-issuing bank, card association assessments, and revenue sharing amounts. All of these are recognized at the time the merchant’s transactions are processed or other services are performed. The Company may enter into revenue sharing agreements with referral partners or in connection with purchases of merchant contracts from sellers. The revenue sharing amounts are determined primarily on sales volume processed or revenue generated for a particular group of merchants. Merchant processing revenue also includes revenues related to point-of-sale equipment recorded as sales when the equipment is shipped or as earned for equipment rentals. Trust and Investment Management Fees Trust and investment management fees are recognized over the period in which services are performed and are based on a percentage of the fair value of the assets under management or administration, fixed based on account type, or transaction-based fees. Deposit Service Charges Service charges on deposit accounts are primarily monthly fees based on minimum balances or transaction-based fees. These fees are recognized as earned or as transactions occur and services are provided. Commercial Products Revenue Commercial products revenue primarily includes revenue related to ancillary services provided to Wholesale Banking and Commercial Real Estate customers including standby letter of credit fees, non-yield related loan fees, capital markets related revenue and non-yield related leasing revenue. These fees are recognized as earned or as transactions occur and services are provided. Mortgage Banking Revenue Mortgage banking revenue includes revenue derived from mortgages originated and subsequently sold, generally with servicing retained. The primary components include: gains and losses on mortgage sales; servicing revenue; changes in fair value for mortgage loans originated with the intent to sell and measured at fair value under the fair value option; changes in fair value for derivative commitments to purchase and originate mortgage loans; changes in the fair value of mortgage servicing rights (“MSRs”); and the impact of risk management activities associated with the mortgage origination pipeline, funded loans and MSRs. Net interest income from mortgage loans is recorded in interest income. Refer to Other Significant Policies in Note 1, as well as Note 9 and Note 21 for a further discussion of MSRs.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill is recorded on acquired businesses if the purchase price exceeds the fair value of the net assets acquired. Other intangible assets are recorded at their fair value upon completion of a business acquisition or certain other transactions, and generally represent the value of customer contracts or relationships. Goodwill is not amortized but is subject, at a minimum, to annual tests for impairment at a reporting unit level. In certain situations, an interim impairment test may be required if events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Other intangible assets are amortized over their estimated useful lives, using straight-line and accelerated methods and are subject to impairment if events or circumstances indicate a possible inability to realize the carrying amount. Determining the amount of goodwill impairment, if any, includes assessing the current implied fair value of the reporting unit as if it were being acquired in a business combination and comparing it to the carrying amount of the reporting unit’s goodwill. Determining the amount of other intangible asset impairment, if any, includes assessing the present value of the estimated future cash flows associated with the intangible asset and comparing it to the carrying amount of the asset.
Income Taxes	Income Taxes Deferred taxes are recorded to reflect the tax consequences on future years of differences between the tax basis of assets and liabilities and their financial reporting carrying amounts. The Company uses the deferral method of accounting on investments that generate investment tax credits. Under this method, the investment tax credits are recognized as a reduction to the related asset. Beginning January 1, 2014, the Company presents the expense on certain qualified affordable housing investments in tax expense rather than noninterest expense.
Mortgage Servicing Rights	Mortgage Servicing Rights MSRs are capitalized as separate assets when loans are sold and servicing is retained or if they are purchased from others. MSRs are recorded at fair value. The Company determines the fair value by estimating the present value of the asset’s future cash flows utilizing market-based prepayment rates, option adjusted spread, and other assumptions validated through comparison to trade information, industry surveys and independent third party valuations. Changes in the fair value of MSRs are recorded in earnings as mortgage banking revenue during the period in which they occur.
Pensions	Pensions For purposes of its pension plans, the Company utilizes its fiscal year-end as the measurement date. At the measurement date, plan assets are determined based on fair value, generally representing observable market prices or the net asset value provided by the funds’ trustee or administrator. The actuarial cost method used to compute the pension liabilities and related expense is the projected unit credit method. The projected benefit obligation is principally determined based on the present value of projected benefit distributions at an assumed discount rate. The discount rate utilized is based on the investment yield of high quality corporate bonds available in the marketplace with maturities equal to projected cash flows of future benefit payments as of the measurement date. Periodic pension expense (or income) includes service costs, interest costs based on the assumed discount rate, the expected return on plan assets based on an actuarially derived market-related value and amortization of actuarial gains and losses. Pension accounting reflects the long-term nature of benefit obligations and the investment horizon of plan assets, and can have the effect of reducing earnings volatility related to short-term changes in interest rates and market valuations. Actuarial gains and losses include the impact of plan amendments and various unrecognized gains and losses which are deferred and amortized over the future service periods of active employees. The market-related value utilized to determine the expected return on plan assets is based on fair value adjusted for the difference between expected returns and actual performance of plan assets. The unrealized difference between actual experience and expected returns is included in expense over a period of approximately fifteen years. The overfunded or underfunded status of the plans is recorded as an asset or liability on the Consolidated Balance Sheet, with changes in that status recognized through other comprehensive income (loss).
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation and depreciated primarily on a straight-line basis over the estimated life of the assets. Estimated useful lives range up to 40 years for newly constructed buildings and from 3 to 20 years for furniture and equipment. Capitalized leases, less accumulated amortization, are included in premises and equipment. Capitalized lease obligations are included in long-term debt. Capitalized leases are amortized on a straight-line basis over the lease term and the amortization is included in depreciation expense.
Stock-Based Compensation	Stock-Based Compensation The Company grants stock-based awards, including restricted stock, restricted stock units and options to purchase common stock of the Company. Stock option grants are for a fixed number of shares to employees and directors with an exercise price equal to the fair value of the shares at the date of grant. Restricted stock and restricted stock unit grants are awarded at no cost to the recipient. Stock-based compensation for awards is recognized in the Company’s results of operations on a straight-line basis over the vesting period. The Company immediately recognizes compensation cost of awards to employees that meet retirement status, despite their continued active employment. The amortization of stock-based compensation reflects estimated forfeitures adjusted for actual forfeiture experience. As compensation expense is recognized, a deferred tax asset is recorded that represents an estimate of the future tax deduction from exercise or release of restrictions. At the time stock-based awards are exercised, cancelled, expire, or restrictions are released, the Company may be required to recognize an adjustment to tax expense, depending on the market price of the Company’s common stock at that time.
Per Share Calculations	Per Share Calculations Earnings per common share is calculated by dividing net income applicable to U.S. Bancorp common shareholders by the weighted-average number of common shares outstanding. Diluted earnings per common share is calculated by adjusting income and outstanding shares, assuming conversion of all potentially dilutive securities.
Accounting Changes	Revenue Recognition In May 2014, the Financial Accounting Standards Board (“FASB”) issued accounting guidance, originally effective for the Company on January 1, 2017, related to revenue recognition from contracts with customers. In August 2015, the FASB delayed the effective date of this guidance by one year, resulting in it becoming effective for the Company on January 1, 2018. This guidance amends certain currently existing revenue recognition accounting guidance and allows for either retrospective application to all periods presented or a modified retrospective approach where the guidance would only be applied to existing contracts in effect at the adoption date and new contracts going forward. The Company expects the adoption of this guidance will not be material to its financial statements. Accounting for Leases In February 2016, the FASB issued accounting guidance, effective for the Company on January 1, 2019, related to the accounting for leases. This guidance will require lessees to recognize all leases on the Consolidated Balance Sheet as lease assets and lease liabilities, with lessor accounting being largely unchanged. This guidance also requires additional disclosures regarding leasing arrangements. The Company expects the adoption of this guidance will not be material to its financial statements. Financial Instruments – Credit Losses In June 2016, the FASB issued accounting guidance, effective for the Company no later than January 1, 2020, related to the impairment of financial instruments. This guidance changes existing impairment recognition to a model that is based on expected losses rather than incurred losses, which is intended to result in more timely recognition of credit losses. This guidance is also intended to reduce the complexity of current accounting guidance by decreasing the number of credit impairment models that entities use to account for debt instruments. The Company is currently evaluating the impact of this guidance on its financial statements.
Accounting for Transfers and Servicing of Financial Assets	In accordance with the accounting guidance for asset transfers, the Company considers any ongoing involvement with transferred assets in determining whether the assets can be derecognized from the balance sheet. For loans sold under participation agreements, the Company also considers whether the terms of the loan participation agreement meet the accounting definition of a participating interest. With the exception of servicing and certain performance-based guarantees, the Company’s continuing involvement with financial assets sold is minimal and generally limited to market customary representation and warranty clauses. Any gain or loss on sale depends on the previous carrying amount of the transferred financial assets, the consideration received, and any liabilities incurred in exchange for the transferred assets. Upon transfer, any servicing assets and other interests that continue to be held by the Company are initially recognized at fair value. For further information on MSRs, refer to Note 9. On a limited basis, the Company may acquire and package high-grade corporate bonds for select corporate customers, in which the Company generally has no continuing involvement with these transactions. Additionally, the Company is an authorized GNMA issuer and issues GNMA securities on a regular basis. The Company has no other asset securitizations or similar asset-backed financing arrangements that are off-balance sheet.
Variable Interest Entities	The Company is not required to consolidate VIEs in which it has concluded it does not have a controlling financial interest, and thus is not the primary beneficiary. In such cases, the Company does not have both the power to direct the entities’ most significant activities and the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIEs. The Company’s investments in these unconsolidated VIEs are carried in other assets on the Consolidated Balance Sheet. The Company’s unfunded capital and other commitments related to these unconsolidated VIEs are generally carried in other liabilities on the Consolidated Balance Sheet. The Company’s maximum exposure to loss from these unconsolidated VIEs include the investment recorded on the Company’s Consolidated Balance Sheet, net of unfunded capital commitments, and previously recorded tax credits which remain subject to recapture by taxing authorities based on compliance features required to be met at the project level. While the Company believes potential losses from these investments are remote, the maximum exposure was determined by assuming a scenario where the community-based business and housing projects completely fail and do not meet certain government compliance requirements resulting in recapture of the related tax credits. The Company is required to consolidate VIEs in which it has concluded it has a controlling financial interest. The Company sponsors entities to which it transfers its interests in tax-advantaged investments to third parties. The majority of the assets of these consolidated VIEs are reported in other assets, and the liabilities are reported in long-term debt and other liabilities. The assets of a particular VIE are the primary source of funds to settle its obligations. The creditors of the VIEs do not have recourse to the general credit of the Company. The Company’s exposure to the consolidated VIEs is generally limited to the carrying value of its variable interests plus any related tax credits previously recognized or transferred to others with a guarantee. Effective January 1, 2016, the Company adopted accounting guidance, issued by the FASB in February 2015, relating to the analysis required by organizations to evaluate whether they should consolidate certain legal entities. The adoption of this guidance did not have a material impact on the Company’s financial statements, and specifically excludes registered money market funds from the consolidation analysis.
Netting Arrangements for Certain Financial Instruments	Irrespective of how derivatives are traded, the Company’s derivative contracts include offsetting rights (referred to as netting arrangements), and depending on expected volume, credit risk, and counterparty preference, collateral maintenance may be required. For all derivatives under collateral support arrangements, fair value is determined daily and, depending on the collateral maintenance requirements, the Company and a counterparty may receive or deliver collateral, based upon the net fair value of all derivative positions between the Company and the counterparty. Collateral is typically cash, but securities may be allowed under collateral arrangements with certain counterparties. Receivables and payables related to cash collateral are included in other assets and other liabilities on the Consolidated Balance Sheet, along with the related derivative asset and liability fair values. Any securities pledged to counterparties as collateral remain on the Consolidated Balance Sheet. Securities received from counterparties as collateral are not recognized on the Consolidated Balance Sheet, unless the counterparty defaults. In general, securities used as collateral can be sold, repledged or otherwise used by the party in possession. No restrictions exist on the use of cash collateral by either party. As part of the Company’s treasury and broker-dealer operations, the Company executes transactions that are treated as securities sold under agreements to repurchase or securities purchased under agreements to resell, both of which are accounted for as collateralized financings. Securities sold under agreements to repurchase include repurchase agreements and securities loaned transactions. Securities purchased under agreements to resell include reverse repurchase agreements and securities borrowed transactions. For securities sold under agreements to repurchase, the Company records a liability for the cash received, which is included in short-term borrowings on the Consolidated Balance Sheet. For securities purchased under agreements to resell, the Company records a receivable for the cash paid, which is included in other assets on the Consolidated Balance Sheet. Securities transferred to counterparties under repurchase agreements and securities loaned transactions continue to be recognized on the Consolidated Balance Sheet, are measured at fair value, and are included in investment securities or other assets. Securities received from counterparties under reverse repurchase agreements and securities borrowed transactions are not recognized on the Consolidated Balance Sheet unless the counterparty defaults. The securities transferred under repurchase and reverse repurchase transactions typically are U.S. Treasury and agency securities or residential agency mortgage-backed securities. The securities loaned or borrowed typically are corporate debt securities traded by the Company’s broker-dealer. In general, the securities transferred can be sold, repledged or otherwise used by the party in possession. No restrictions exist on the use of cash collateral by either party. Repurchase/reverse repurchase and securities loaned/borrowed transactions expose the Company to counterparty risk. The Company manages this risk by performing assessments, independent of business line managers, and establishing concentration limits on each counterparty. Additionally, these transactions include collateral arrangements that require the fair values of the underlying securities to be determined daily, resulting in cash being obtained or refunded to counterparties to maintain specified collateral levels. The Company executes its derivative, repurchase/reverse repurchase and securities loaned/borrowed transactions under the respective industry standard agreements. These agreements include master netting arrangements that allow for multiple contracts executed with the same counterparty to be viewed as a single arrangement. This allows for net settlement of a single amount on a daily basis. In the event of default, the master netting arrangement provides for close-out netting, which allows all of these positions with the defaulting counterparty to be terminated and net settled with a single payment amount. The Company has elected to offset the assets and liabilities under netting arrangements for the balance sheet presentation of the majority of its derivative counterparties, excluding centrally cleared derivative contracts due to current uncertainty about the legal enforceability of netting arrangements with the clearinghouses. The netting occurs at the counterparty level, and includes all assets and liabilities related to the derivative contracts, including those associated with cash collateral received or delivered. The Company has not elected to offset the assets and liabilities under netting arrangements for the balance sheet presentation of repurchase/reverse repurchase and securities loaned/borrowed transactions.
Fair Values of Assets and Liabilities	The Company uses fair value measurements for the initial recording of certain assets and liabilities, periodic remeasurement of certain assets and liabilities, and disclosures. Derivatives, trading and available-for-sale investment securities, MSRs and substantially all MLHFS are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans held for sale, loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application of lower-of-cost-or-fair value accounting or impairment write-downs of individual assets. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A fair value measurement reflects all of the assumptions that market participants would use in pricing the asset or liability, including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. The Company groups its assets and liabilities measured at fair value into a three-level hierarchy for valuation techniques used to measure financial assets and financial liabilities at fair value. This hierarchy is based on whether the valuation inputs are observable or unobservable. These levels are: – Level 1 — Quoted prices in active markets for identical assets or liabilities. Level 1 includes U.S. Treasury securities, as well as exchange-traded instruments, including certain perpetual preferred and corporate debt securities. – Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 includes debt securities that are traded less frequently than exchange-traded instruments and which are typically valued using third party pricing services; derivative contracts and other assets and liabilities, including securities, whose value is determined using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data; and MLHFS whose values are determined using quoted prices for similar assets or pricing models with inputs that are observable in the market or can be corroborated by observable market data. – Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. This category includes MSRs, certain debt securities and certain derivative contracts. When the Company changes its valuation inputs for measuring financial assets and financial liabilities at fair value, either due to changes in current market conditions or other factors, it may need to transfer those assets or liabilities to another level in the hierarchy based on the new inputs used. The Company recognizes these transfers at the end of the reporting period in which the transfers occur. The Company has processes and controls in place to increase the reliability of estimates it makes in determining fair value measurements. Items quoted on an exchange are verified to the quoted price. Items provided by a third party pricing service are subject to price verification procedures as described in more detail in the specific valuation discussions below. For fair value measurements modeled internally, the Company’s valuation models are subject to the Company’s Model Risk Governance Policy and Program, as maintained by the Company’s risk management department. The purpose of model validation is to assess the accuracy of the models’ input, processing, and reporting components. All models are required to be independently reviewed and approved prior to being placed in use, and are subject to formal change control procedures. Under the Company’s Model Risk Governance Policy, models are required to be reviewed at least annually to ensure they are operating as intended. Inputs into the models are market observable inputs whenever available. When market observable inputs are not available, the inputs are developed based upon analysis of historical experience and evaluation of other relevant market data. Significant unobservable model inputs are subject to review by senior management in corporate functions, who are independent from the modeling. Significant unobservable model inputs are also compared to actual results, typically on a quarterly basis. Significant Level 3 fair value measurements are also subject to corporate-level review and are benchmarked to market transactions or other market data, when available.

Significant Accounting Polici33

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Line of Business Financial Performance	TABLE 25 Line of Business Financial Performance Wholesale Banking and Commercial Real Estate Consumer and Small Business Banking Year Ended December 31 (Dollars in Millions) 2016 2015 Percent 2016 2015 Percent Condensed Income Statement Net interest income (taxable-equivalent basis) $ 2,240 $ 2,002 11.9 % $ 4,752 $ 4,580 3.8 % Noninterest income 897 892 .6 2,527 2,485 1.7 Securities gains (losses), net 2 – * – – – Total net revenue 3,139 2,894 8.5 7,279 7,065 3.0 Noninterest expense 1,417 1,322 7.2 4,999 4,799 4.2 Other intangibles 4 4 – 32 40 (20.0 ) Total noninterest expense 1,421 1,326 7.2 5,031 4,839 4.0 Income before provision and income taxes 1,718 1,568 9.6 2,248 2,226 1.0 Provision for credit losses 365 214 70.6 93 148 (37.2 ) Income before income taxes 1,353 1,354 (.1 ) 2,155 2,078 3.7 Income taxes and taxable-equivalent adjustment 492 493 (.2 ) 785 755 4.0 Net income 861 861 – 1,370 1,323 3.6 Net (income) loss attributable to noncontrolling interests – – – – – – Net income attributable to U.S. Bancorp $ 861 $ 861 – $ 1,370 $ 1,323 3.6 Average Balance Sheet Commercial $ 70,854 $ 64,569 9.7 % $ 10,352 $ 9,848 5.1 % Commercial real estate 21,193 20,506 3.4 18,224 17,917 1.7 Residential mortgages 8 8 – 53,402 50,007 6.8 Credit card – – – – – – Other retail 2 2 – 50,251 46,964 7.0 Total loans, excluding covered loans 92,057 85,085 8.2 132,229 124,736 6.0 Covered loans – – – 4,196 4,934 (15.0 ) Total loans 92,057 85,085 8.2 136,425 129,670 5.2 Goodwill 1,647 1,647 – 3,681 3,681 – Other intangible assets 17 20 (15.0 ) 2,421 2,594 (6.7 ) Assets 100,575 93,421 7.7 151,754 146,554 3.5 Noninterest-bearing deposits 36,849 36,345 1.4 27,544 25,829 6.6 Interest checking 8,615 7,445 15.7 43,587 39,930 9.2 Savings products 42,284 28,095 50.5 57,465 53,753 6.9 Time deposits 13,078 15,027 (13.0 ) 14,273 15,828 (9.8 ) Total deposits 100,826 86,912 16.0 142,869 135,340 5.6 Total U.S. Bancorp shareholders’ equity 8,996 8,309 8.3 11,192 10,892 2.8 * Not meaningful Wealth Management and Securities Services Payment Services Treasury and Corporate Support Consolidated Company 2016 2015 Percent 2016 2015 Percent 2016 2015 Percent 2016 2015 Percent $ 537 $ 355 51.3 % $ 2,140 $ 1,930 10.9 % $ 2,062 $ 2,347 (12.1 )% $ 11,731 $ 11,214 4.6 % 1,589 1,475 7.7 3,562 3,371 5.7 980 869 12.8 9,555 9,092 5.1 – – – – – – 20 – * 22 – * 2,126 1,830 16.2 5,702 5,301 7.6 3,062 3,216 (4.8 ) 21,308 20,306 4.9 1,510 1,422 6.2 2,656 2,521 5.4 915 693 32.0 11,497 10,757 6.9 24 28 (14.3 ) 119 102 16.7 – – – 179 174 2.9 1,534 1,450 5.8 2,775 2,623 5.8 915 693 32.0 11,676 10,931 6.8 592 380 55.8 2,927 2,678 9.3 2,147 2,523 (14.9 ) 9,632 9,375 2.7 (4 ) – * 869 787 10.4 1 (17 ) * 1,324 1,132 17.0 596 380 56.8 2,058 1,891 8.8 2,146 2,540 (15.5 ) 8,308 8,243 .8 217 138 57.2 750 687 9.2 120 237 (49.4 ) 2,364 2,310 2.3 379 242 56.6 1,308 1,204 8.6 2,026 2,303 (12.0 ) 5,944 5,933 .2 – – – (32 ) (31 ) (3.2 ) (24 ) (23 ) (4.3 ) (56 ) (54 ) (3.7 ) $ 379 $ 242 56.6 $ 1,276 $ 1,173 8.8 $ 2,002 $ 2,280 (12.2 ) $ 5,888 $ 5,879 .2 $ 2,916 $ 2,322 25.6 % $ 7,535 $ 7,059 6.7 % $ 386 $ 285 35.4 % $ 92,043 $ 84,083 9.5 % 520 569 (8.6 ) – – – 3,103 3,423 (9.3 ) 43,040 42,415 1.5 2,272 1,816 25.1 – – – – 9 * 55,682 51,840 7.4 – – – 20,490 18,057 13.5 – – – 20,490 18,057 13.5 1,553 1,517 2.4 524 596 (12.1 ) – – – 52,330 49,079 6.6 7,261 6,224 16.7 28,549 25,712 11.0 3,489 3,717 (6.1 ) 263,585 245,474 7.4 – 1 * – – – 30 50 (40.0 ) 4,226 4,985 (15.2 ) 7,261 6,225 16.6 28,549 25,712 11.0 3,519 3,767 (6.6 ) 267,811 250,459 6.9 1,566 1,567 (.1 ) 2,465 2,475 (.4 ) – – – 9,359 9,370 (.1 ) 101 126 (19.8 ) 494 411 20.2 – – – 3,033 3,151 (3.7 ) 10,352 9,238 12.1 34,409 31,796 8.2 136,223 127,856 6.5 433,313 408,865 6.0 13,735 14,393 (4.6 ) 951 879 8.2 2,097 1,757 19.4 81,176 79,203 2.5 9,484 7,959 19.2 – 605 * 40 35 14.3 61,726 55,974 10.3 36,564 33,994 7.6 97 91 6.6 490 483 1.4 136,900 116,416 17.6 3,876 3,343 15.9 – – – 1,781 1,360 31.0 33,008 35,558 (7.2 ) 63,659 59,689 6.7 1,048 1,575 (33.5 ) 4,408 3,635 21.3 312,810 287,151 8.9 2,382 2,312 3.0 6,390 5,868 8.9 18,379 17,432 5.4 47,339 44,813 5.6

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Investment Securities	TABLE 13 Investment Securities Available-for-Sale Held-to-Maturity At December 31, 2016 (Dollars in Millions) Amortized Fair Value Weighted- Weighted- (e) Amortized Fair Value Weighted- Weighted- (e) U.S. Treasury and Agencies Maturing in one year or less $ 3,219 $ 3,218 .6 .74 % $ 450 $ 450 .5 .98 % Maturing after one year through five years 9,509 9,414 2.7 1.10 709 715 2.7 1.78 Maturing after five years through ten years 4,285 4,203 6.2 1.91 4,087 3,961 6.7 1.77 Maturing after ten years 301 292 10.2 2.26 – – – – Total $ 17,314 $ 17,127 3.3 1.25 % $ 5,246 $ 5,126 5.6 1.71 % Mortgage-Backed Securities (a) Maturing in one year or less $ 161 $ 165 .7 4.15 % $ 271 $ 273 .7 2.83 % Maturing after one year through five years 19,304 19,279 4.2 2.06 25,882 25,680 3.8 1.99 Maturing after five years through ten years 22,222 21,834 5.8 1.79 11,317 11,071 5.7 1.86 Maturing after ten years 2,304 2,312 12.2 1.70 237 239 11.1 1.62 Total $ 43,991 $ 43,590 5.4 1.91 % $ 37,707 $ 37,263 4.4 1.96 % Asset-Backed Securities (a) Maturing in one year or less $ – $ – – – % $ – $ – .1 1.38 % Maturing after one year through five years 252 256 3.9 3.18 5 8 3.1 1.39 Maturing after five years through ten years 223 227 5.4 3.49 2 2 5.8 1.53 Maturing after ten years – – – – 1 6 11.5 1.52 Total $ 475 $ 483 4.6 3.32 % $ 8 $ 16 5.0 1.45 % Obligations of State and Political Subdivisions (b)(c) Maturing in one year or less $ 1,573 $ 1,593 .4 7.09 % $ – $ – .3 8.20 % Maturing after one year through five years 517 530 2.6 6.15 – – 2.5 8.15 Maturing after five years through ten years 1,771 1,732 8.1 5.30 6 7 8.8 3.30 Maturing after ten years 1,306 1,184 20.0 5.05 – – – – Total $ 5,167 $ 5,039 8.2 5.87 % $ 6 $ 7 8.4 3.59 % Other Debt Securities Maturing in one year or less $ – $ – – – % $ 8 $ 8 .3 2.15 % Maturing after one year through five years – – – – 16 15 3.8 1.65 Maturing after five years through ten years – – – – – – – – Maturing after ten years 11 9 20.4 5.65 – – – – Total $ 11 $ 9 20.4 5.65 % $ 24 $ 23 2.6 1.82 % Other Investments $ 27 $ 36 – – % $ – $ – – – % Total investment securities (d) $ 66,985 $ 66,284 5.1 2.06 % $ 42,991 $ 42,435 4.6 1.93 % (a) Information related to asset and mortgage-backed securities included above is presented based upon weighted-average maturities anticipating future prepayments. (b) Information related to obligations of state and political subdivisions is presented based upon yield to first optional call date if the security is purchased at a premium, yield to maturity if purchased at par or a discount. (c) Maturity calculations for obligations of state and political subdivisions are based on the first optional call date for securities with a fair value above par and contractual maturity for securities with a fair value equal to or below par. (d) The weighted-average maturity of the available-for-sale investment securities was 4.7 years at December 31, 2015, with a corresponding weighted-average yield of 2.21 percent. The weighted-average maturity of the held-to-maturity investment securities was 4.2 years at December 31, 2015, with a corresponding weighted-average yield of 1.92 percent. (e) Weighted-average yields are presented on a fully-taxable equivalent basis under a tax rate of 35 percent. Yields on available-for-sale and held-to-maturity investment securities are computed based on amortized cost balances, excluding any premiums or discounts recorded related to the transfer of investment securities at fair value from available-for-sale to held-to-maturity. Weighted-average yield and maturity calculations exclude equity securities that have no stated yield or maturity. 2016 2015 At December 31 (Dollars in Millions) Amortized Percent Amortized Percent U.S. Treasury and agencies $ 22,560 20.5 % $ 7,536 7.2 % Mortgage-backed securities 81,698 74.3 91,265 86.6 Asset-backed securities 483 .4 558 .5 Obligations of state and political subdivisions 5,173 4.7 5,157 4.9 Other debt securities and investments 62 .1 891 .8 Total investment securities $ 109,976 100.0 % $ 105,407 100.0 %
Investment Securities Held-to-Maturity	The amortized cost, other-than-temporary impairment recorded in other comprehensive income (loss), gross unrealized holding gains and losses, and fair value of held-to-maturity and available-for-sale investment securities at December 31 were as follows: 2016 2015 Unrealized Losses Unrealized Losses (Dollars in Millions) Amortized Unrealized Other-than- (e) Other (f) Fair Value Amortized Unrealized Other-than- (e) Other (f) Fair Value Held-to-maturity (a) U.S. Treasury and agencies $ 5,246 $ 12 $ – $ (132 ) $ 5,126 $ 2,925 $ 14 $ – $ (20 ) $ 2,919 Mortgage-backed securities Residential Agency 37,706 85 – (529 ) 37,262 40,619 175 – (273 ) 40,521 Non-agency non-prime (d) 1 – – – 1 1 – – – 1 Asset-backed securities Collateralized debt obligations/Collateralized loan obligations – 5 – – 5 – 6 – – 6 Other 8 3 – – 11 10 3 – – 13 Obligations of state and political subdivisions 6 1 – – 7 8 1 – (1 ) 8 Obligations of foreign governments 9 – – – 9 9 – – – 9 Other debt securities 15 – – (1 ) 14 18 – – (2 ) 16 Total held-to-maturity $ 42,991 $ 106 $ – $ (662 ) $ 42,435 $ 43,590 $ 199 $ – $ (296 ) $ 43,493 (a) Held-to-maturity investment securities are carried at historical cost or at fair value at the time of transfer from the available-for-sale to held-to-maturity category, adjusted for amortization of premiums and accretion of discounts and credit-related other-than-temporary impairment. (b) Available-for-sale investment securities are carried at fair value with unrealized net gains or losses reported within accumulated other comprehensive income (loss) in shareholders’ equity. (c) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). When the Company determines the designation, prime securities typically have a weighted-average credit score of 725 or higher and a loan-to-value of 80 percent or lower; however, other pool characteristics may result in designations that deviate from these credit score and loan-to-value thresholds. (d) Includes all securities not meeting the conditions to be designated as prime. (e) Represents impairment not related to credit for those investment securities that have been determined to be other-than-temporarily impaired. (f) Represents unrealized losses on investment securities that have not been determined to be other-than-temporarily impaired.
Investment Securities Available-for-Sale	The amortized cost, other-than-temporary impairment recorded in other comprehensive income (loss), gross unrealized holding gains and losses, and fair value of held-to-maturity and available-for-sale investment securities at December 31 were as follows: 2016 2015 Unrealized Losses Unrealized Losses (Dollars in Millions) Amortized Unrealized Other-than- (e) Other (f) Fair Value Amortized Unrealized Other-than- (e) Other (f) Fair Value Available-for-sale (b) U.S. Treasury and agencies $ 17,314 $ 11 $ – $ (198 ) $ 17,127 $ 4,611 $ 12 $ – $ (27 ) $ 4,596 Mortgage-backed securities Residential Agency 43,558 225 – (645 ) 43,138 50,056 384 – (364 ) 50,076 Non-agency Prime (c) 240 6 (3 ) (1 ) 242 316 6 (3 ) (1 ) 318 Non-prime (d) 178 20 (3 ) – 195 221 20 (1 ) – 240 Commercial agency 15 – – – 15 52 – – – 52 Asset-backed securities Collateralized debt obligations/Collateralized loan obligations – – – – – 16 3 – – 19 Other 475 8 – – 483 532 9 – – 541 Obligations of state and political subdivisions 5,167 55 – (183 ) 5,039 5,149 169 – (2 ) 5,316 Corporate debt securities 11 – – (2 ) 9 677 3 – (70 ) 610 Perpetual preferred securities – – – – – 153 20 – (12 ) 161 Other investments 27 9 – – 36 34 34 – – 68 Total available-for-sale $ 66,985 $ 334 $ (6 ) $ (1,029 ) $ 66,284 $ 61,817 $ 660 $ (4 ) $ (476 ) $ 61,997 (a) Held-to-maturity investment securities are carried at historical cost or at fair value at the time of transfer from the available-for-sale to held-to-maturity category, adjusted for amortization of premiums and accretion of discounts and credit-related other-than-temporary impairment. (b) Available-for-sale investment securities are carried at fair value with unrealized net gains or losses reported within accumulated other comprehensive income (loss) in shareholders’ equity. (c) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). When the Company determines the designation, prime securities typically have a weighted-average credit score of 725 or higher and a loan-to-value of 80 percent or lower; however, other pool characteristics may result in designations that deviate from these credit score and loan-to-value thresholds. (d) Includes all securities not meeting the conditions to be designated as prime. (e) Represents impairment not related to credit for those investment securities that have been determined to be other-than-temporarily impaired. (f) Represents unrealized losses on investment securities that have not been determined to be other-than-temporarily impaired.
Amount of Interest Income from Taxable and Non-Taxable Investment Securities	The following table provides information about the amount of interest income from taxable and non-taxable investment securities: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Taxable $ 1,878 $ 1,778 $ 1,634 Non-taxable 200 223 232 Total interest income from investment securities $ 2,078 $ 2,001 $ 1,866
Amount of Gross Gains and Losses Realized through Sales of Available-for-Sale Investment Securities	The following table provides information about the amount of gross gains and losses realized through the sales of available-for-sale investment securities: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Realized gains $ 93 $ 7 $ 11 Realized losses (66 ) (6 ) – Net realized gains (losses) $ 27 $ 1 $ 11 Income tax (benefit) on net realized gains (losses) $ 10 $ – $ 4
Changes in Credit Losses on Debt Securities	Changes in the credit losses on debt securities are summarized as follows: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 84 $ 101 $ 116 Additions to Credit Losses Due to Other-than-temporary Impairments Decreases in expected cash flows on securities for which other-than-temporary impairment was previously recognized 3 1 3 Total other-than-temporary impairment on debt securities 3 1 3 Other Changes in Credit Losses Increases in expected cash flows (2 ) (3 ) (5 ) Realized losses (a) (10 ) (15 ) (13 ) Balance at end of period $ 75 $ 84 $ 101 (a) Primarily represents principal losses allocated to mortgage and asset-backed securities in the Company’s portfolio under the terms of the securitization transaction documents.
Gross Unrealized Losses and Fair Value of Company's Investment Securities	The following table shows the gross unrealized losses and fair value of the Company’s investment securities with unrealized losses, aggregated by investment category and length of time the individual investment securities have been in continuous unrealized loss positions, at December 31, 2016: Less Than 12 Months 12 Months or Greater Total (Dollars in Millions) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Held-to-maturity U.S. Treasury and agencies $ 3,662 $ (132 ) $ – $ – $ 3,662 $ (132 ) Residential agency mortgage-backed securities 26,937 (462 ) 2,132 (67 ) 29,069 (529 ) Other asset-backed securities – – 5 – 5 – Other debt securities 15 (1 ) – – 15 (1 ) Total held-to-maturity $ 30,614 $ (595 ) $ 2,137 $ (67 ) $ 32,751 $ (662 ) Available-for-sale U.S. Treasury and agencies $ 14,490 $ (198 ) $ – $ – $ 14,490 $ (198 ) Residential mortgage-backed securities Agency 30,601 (552 ) 3,149 (93 ) 33,750 (645 ) Non-agency (a) Prime (b) 11 – 93 (4 ) 104 (4 ) Non-prime (c) 18 (1 ) 12 (2 ) 30 (3 ) Commercial agency 10 – – – 10 – Other asset-backed securities – – 2 – 2 – Obligations of state and political subdivisions 2,272 (183 ) 3 – 2,275 (183 ) Corporate debt securities – – 9 (2 ) 9 (2 ) Other investments 1 – – – 1 – Total available-for-sale $ 47,403 $ (934 ) $ 3,268 $ (101 ) $ 50,671 $ (1,035 ) (a) The Company had $7 million of unrealized losses on residential non-agency mortgage-backed securities. Credit-related other-than-temporary impairment on these securities may occur if there is further deterioration in the underlying collateral pool performance. Borrower defaults may increase if economic conditions worsen. Additionally, deterioration in home prices may increase the severity of projected losses. (b) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (c) Includes all securities not meeting the conditions to be designated as prime.

Loans and Allowance for Credi35

Loans and Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Composition of Loan Portfolio	The composition of the loan portfolio at December 31, disaggregated by class and underlying specific portfolio type, was as follows: (Dollars in Millions) 2016 2015 Commercial Commercial $ 87,928 $ 83,116 Lease financing 5,458 5,286 Total commercial 93,386 88,402 Commercial Real Estate Commercial mortgages 31,592 31,773 Construction and development 11,506 10,364 Total commercial real estate 43,098 42,137 Residential Mortgages Residential mortgages 43,632 40,425 Home equity loans, first liens 13,642 13,071 Total residential mortgages 57,274 53,496 Credit Card 21,749 21,012 Other Retail Retail leasing 6,316 5,232 Home equity and second mortgages 16,369 16,384 Revolving credit 3,282 3,354 Installment 8,087 7,030 Automobile 17,571 16,587 Student 2,239 2,619 Total other retail 53,864 51,206 Total loans, excluding covered loans 269,371 256,253 Covered Loans 3,836 4,596 Total loans $ 273,207 $ 260,849
Changes in Accretable Balance for Purchased Impaired Loans	Changes in the accretable balance for purchased impaired loans for the years ended December 31, were as follows: (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 957 $ 1,309 $ 1,655 Accretion (392 ) (382 ) (441 ) Disposals (110 ) (132 ) (131 ) Reclassifications from nonaccretable difference (a) 244 163 229 Other (1 ) (1 ) (3 ) Balance at end of period $ 698 $ 957 $ 1,309 (a) Primarily relates to changes in expected credit performance.
Activity in Allowance for Credit Losses by Portfolio Class	Activity in the allowance for credit losses by portfolio class was as follows: (Dollars in Millions) Commercial Commercial Residential Credit Other Total Loans, Covered Loans Total Balance at December 31, 2015 $ 1,287 $ 724 $ 631 $ 883 $ 743 $ 4,268 $ 38 $ 4,306 Add Provision for credit losses 488 75 (61 ) 728 95 1,325 (1 ) 1,324 Deduct Loans charged off 417 22 85 759 332 1,615 – 1,615 Less recoveries of loans charged off (92 ) (35 ) (25 ) (83 ) (111 ) (346 ) – (346 ) Net loans charged off 325 (13 ) 60 676 221 1,269 – 1,269 Other changes (a) – – – (1 ) – (1 ) (3 ) (4 ) Balance at December 31, 2016 $ 1,450 $ 812 $ 510 $ 934 $ 617 $ 4,323 $ 34 $ 4,357 Balance at December 31, 2014 $ 1,146 $ 726 $ 787 $ 880 $ 771 $ 4,310 $ 65 $ 4,375 Add Provision for credit losses 361 (30 ) (47 ) 654 193 1,131 1 1,132 Deduct Loans charged off 314 22 135 726 319 1,516 – 1,516 Less recoveries of loans charged off (95 ) (50 ) (26 ) (75 ) (98 ) (344 ) – (344 ) Net loans charged off 219 (28 ) 109 651 221 1,172 – 1,172 Other changes (a) (1 ) – – – – (1 ) (28 ) (29 ) Balance at December 31, 2015 $ 1,287 $ 724 $ 631 $ 883 $ 743 $ 4,268 $ 38 $ 4,306 Balance at December 31, 2013 $ 1,075 $ 776 $ 875 $ 884 $ 781 $ 4,391 $ 146 $ 4,537 Add Provision for credit losses 266 (63 ) 107 657 278 1,245 (16 ) 1,229 Deduct Loans charged off 305 36 216 725 384 1,666 13 1,679 Less recoveries of loans charged off (110 ) (49 ) (21 ) (67 ) (96 ) (343 ) (2 ) (345 ) Net loans charged off 195 (13 ) 195 658 288 1,323 11 1,334 Other changes (a) – – – (3 ) – (3 ) (54 ) (57 ) Balance at December 31, 2014 $ 1,146 $ 726 $ 787 $ 880 $ 771 $ 4,310 $ 65 $ 4,375 (a) Includes net changes in credit losses to be reimbursed by the FDIC and reductions in the allowance for covered loans where the reversal of a previously recorded allowance was offset by an associated decrease in the indemnification asset, and the impact of any loan sales.
Additional Detail of Allowance for Credit Losses and Related Loan Balances by Portfolio Class	Additional detail of the allowance for credit losses by portfolio class was as follows: (Dollars in Millions) Commercial Commercial Residential Credit Other Total Loans, Covered Total Allowance Balance at December 31, 2016 Related to Loans individually evaluated for impairment (a) $ 50 $ 4 $ – $ – $ – $ 54 $ – $ 54 TDRs collectively evaluated for impairment 12 4 180 65 20 281 1 282 Other loans collectively evaluated for impairment 1,388 798 330 869 597 3,982 – 3,982 Loans acquired with deteriorated credit quality – 6 – – – 6 33 39 Total allowance for credit losses $ 1,450 $ 812 $ 510 $ 934 $ 617 $ 4,323 $ 34 $ 4,357 Allowance Balance at December 31, 2015 Related to Loans individually evaluated for impairment (a) $ 11 $ 2 $ – $ – $ – $ 13 $ – $ 13 TDRs collectively evaluated for impairment 10 7 236 57 33 343 2 345 Other loans collectively evaluated for impairment 1,266 703 395 826 710 3,900 – 3,900 Loans acquired with deteriorated credit quality – 12 – – – 12 36 48 Total allowance for credit losses $ 1,287 $ 724 $ 631 $ 883 $ 743 $ 4,268 $ 38 $ 4,306 (a) Represents the allowance for credit losses related to loans greater than $5 million classified as nonperforming or TDRs. Additional detail of loan balances by portfolio class was as follows: (Dollars in Millions) Commercial Commercial Residential Credit Other Total Loans, Covered (b) Total Loans December 31, 2016 Loans individually evaluated for impairment (a) $ 623 $ 70 $ – $ – $ – $ 693 $ – $ 693 TDRs collectively evaluated for impairment 145 146 3,678 222 173 4,364 35 4,399 Other loans collectively evaluated for impairment 92,611 42,751 53,595 21,527 53,691 264,175 1,553 265,728 Loans acquired with deteriorated credit quality 7 131 1 – – 139 2,248 2,387 Total loans $ 93,386 $ 43,098 $ 57,274 $ 21,749 $ 53,864 $ 269,371 $ 3,836 $ 273,207 December 31, 2015 Loans individually evaluated for impairment (a) $ 336 $ 41 $ 13 $ – $ – $ 390 $ – $ 390 TDRs collectively evaluated for impairment 138 235 4,241 210 211 5,035 35 5,070 Other loans collectively evaluated for impairment 87,927 41,566 49,241 20,802 50,995 250,531 2,059 252,590 Loans acquired with deteriorated credit quality 1 295 1 – – 297 2,502 2,799 Total loans $ 88,402 $ 42,137 $ 53,496 $ 21,012 $ 51,206 $ 256,253 $ 4,596 $ 260,849 (a) Represents loans greater than $5 million classified as nonperforming or TDRs. (b) Includes expected reimbursements from the FDIC under loss sharing agreements.
Summary of Loans by Portfolio Class, Including Delinquency Status of those that Continue to Accrue Interest and are Nonperforming	The following table provides a summary of loans by portfolio class, including the delinquency status of those that continue to accrue interest, and those that are nonperforming: Accruing (Dollars in Millions) Current 30-89 Days 90 Days or Nonperforming Total December 31, 2016 Commercial $ 92,588 $ 263 $ 52 $ 483 $ 93,386 Commercial real estate 42,922 44 8 124 43,098 Residential mortgages (a) 56,372 151 156 595 57,274 Credit card 21,209 284 253 3 21,749 Other retail 53,340 284 83 157 53,864 Total loans, excluding covered loans 266,431 1,026 552 1,362 269,371 Covered loans 3,563 55 212 6 3,836 Total loans $ 269,994 $ 1,081 $ 764 $ 1,368 $ 273,207 December 31, 2015 Commercial $ 87,863 $ 317 $ 48 $ 174 $ 88,402 Commercial real estate 41,907 89 14 127 42,137 Residential mortgages (a) 52,438 170 176 712 53,496 Credit card 20,532 243 228 9 21,012 Other retail 50,745 224 75 162 51,206 Total loans, excluding covered loans 253,485 1,043 541 1,184 256,253 Covered loans 4,236 62 290 8 4,596 Total loans $ 257,721 $ 1,105 $ 831 $ 1,192 $ 260,849 (a) At December 31, 2016, $273 million of loans 30–89 days past due and $2.5 billion of loans 90 days or more past due purchased from Government National Mortgage Association (“GNMA”) mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs, were classified as current, compared with $320 million and $2.9 billion at December 31, 2015, respectively.
Summary of Loans by Portfolio Class and Company's Internal Credit Quality Rating	The following table provides a summary of loans by portfolio class and the Company’s internal credit quality rating: Criticized (Dollars in Millions) Pass Special Classified (a) Total Total December 31, 2016 Commercial (b) $ 89,739 $ 1,721 $ 1,926 $ 3,647 $ 93,386 Commercial real estate 41,634 663 801 1,464 43,098 Residential mortgages (c) 56,457 10 807 817 57,274 Credit card 21,493 – 256 256 21,749 Other retail 53,576 6 282 288 53,864 Total loans, excluding covered loans 262,899 2,400 4,072 6,472 269,371 Covered loans 3,766 – 70 70 3,836 Total loans $ 266,665 $ 2,400 $ 4,142 $ 6,542 $ 273,207 Total outstanding commitments $ 562,704 $ 4,920 $ 5,629 $ 10,549 $ 573,253 December 31, 2015 Commercial (b) $ 85,206 $ 1,629 $ 1,567 $ 3,196 $ 88,402 Commercial real estate 41,079 365 693 1,058 42,137 Residential mortgages (c) 52,548 2 946 948 53,496 Credit card 20,775 – 237 237 21,012 Other retail 50,899 6 301 307 51,206 Total loans, excluding covered loans 250,507 2,002 3,744 5,746 256,253 Covered loans 4,507 – 89 89 4,596 Total loans $ 255,014 $ 2,002 $ 3,833 $ 5,835 $ 260,849 Total outstanding commitments $ 539,614 $ 3,945 $ 4,845 $ 8,790 $ 548,404 (a) Classified rating on consumer loans primarily based on delinquency status. (b) At December 31, 2016, $1.2 billion of energy loans ($2.8 billion of total outstanding commitments) had a special mention or classified rating, compared with $1.1 billion of energy loans ($1.9 billion of total outstanding commitments) at December 31, 2015. (c) At December 31, 2016, $2.5 billion of GNMA loans 90 days or more past due and $1.6 billion of restructured GNMA loans whose repayments are insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs were classified with a pass rating, compared with $2.9 billion and $1.9 billion at December 31, 2015, respectively.
Summary of Impaired Loans, which Include Nonaccrual and TDR Loans, by Portfolio Class	A summary of impaired loans, which include all nonaccrual and TDR loans, by portfolio class was as follows: (Dollars in Millions) Period-end (a) Unpaid Valuation Commitments December 31, 2016 Commercial $ 849 $ 1,364 $ 68 $ 284 Commercial real estate 293 697 10 – Residential mortgages 2,274 2,847 153 – Credit card 222 222 64 – Other retail 281 456 22 4 Total loans, excluding GNMA and covered loans 3,919 5,586 317 288 Loans purchased from GNMA mortgage pools 1,574 1,574 28 – Covered loans 36 42 1 1 Total $ 5,529 $ 7,202 $ 346 $ 289 December 31, 2015 Commercial $ 520 $ 1,110 $ 25 $ 154 Commercial real estate 336 847 11 1 Residential mortgages 2,575 3,248 199 – Credit card 210 210 57 – Other retail 309 503 35 4 Total loans, excluding GNMA and covered loans 3,950 5,918 327 159 Loans purchased from GNMA mortgage pools 1,913 1,913 40 – Covered loans 39 48 2 1 Total $ 5,902 $ 7,879 $ 369 $ 160 (a) Substantially all loans classified as impaired at December 31, 2016 and 2015, had an associated allowance for credit losses. The total amount of interest income recognized during 2016 on loans classified as impaired at December 31, 2016, excluding those acquired with deteriorated credit quality, was $237 million, compared to what would have been recognized at the original contractual terms of the loans of $308 million.
Impaired Loans Average Recorded Investment and Interest Income Recognized	Additional information on impaired loans for the years ended December 31 follows: (Dollars in Millions) Average Interest 2016 Commercial $ 799 $ 9 Commercial real estate 324 15 Residential mortgages 2,422 124 Credit card 214 4 Other retail 293 13 Total loans, excluding GNMA and covered loans 4,052 165 Loans purchased from GNMA mortgage pools 1,620 71 Covered loans 38 1 Total $ 5,710 $ 237 2015 Commercial $ 383 $ 13 Commercial real estate 433 16 Residential mortgages 2,666 131 Credit card 221 4 Other retail 336 14 Total loans, excluding GNMA and covered loans 4,039 178 Loans purchased from GNMA mortgage pools 2,079 95 Covered loans 42 1 Total $ 6,160 $ 274 2014 Commercial $ 414 $ 9 Commercial real estate 592 26 Residential mortgages 2,742 140 Credit card 273 9 Other retail 377 17 Total loans, excluding GNMA and covered loans 4,398 201 Loans purchased from GNMA mortgage pools 2,609 124 Covered loans 334 15 Total $ 7,341 $ 340
Summary of Loans Modified as TDRs	The following table provides a summary of loans modified as TDRs for the years ended December 31, by portfolio class: (Dollars in Millions) Number Pre-Modification Balance Post-Modification Balance 2016 Commercial 2,352 $ 844 $ 699 Commercial real estate 102 259 256 Residential mortgages 1,576 168 178 Credit card 31,394 151 153 Other retail 2,235 41 40 Total loans, excluding GNMA and covered loans 37,659 1,463 1,326 Loans purchased from GNMA mortgage pools 11,260 1,274 1,267 Covered loans 39 6 7 Total loans 48,958 $ 2,743 $ 2,600 2015 Commercial 1,607 $ 385 $ 396 Commercial real estate 108 78 76 Residential mortgages 2,080 260 258 Credit card 26,772 133 134 Other retail 2,530 54 54 Total loans, excluding GNMA and covered loans 33,097 910 918 Loans purchased from GNMA mortgage pools 8,199 864 862 Covered loans 16 5 5 Total loans 41,312 $ 1,779 $ 1,785 2014 Commercial 2,027 $ 238 $ 203 Commercial real estate 78 80 71 Residential mortgages 2,089 271 274 Credit card 26,511 144 145 Other retail 2,833 61 61 Total loans, excluding GNMA and covered loans 33,538 794 754 Loans purchased from GNMA mortgage pools 8,961 1,000 1,013 Covered loans 43 15 14 Total loans 42,542 $ 1,809 $ 1,781
Summary of Loans Modified as TDRs in the Past Twelve Months that have Subsequently Defaulted	The following table provides a summary of TDR loans that defaulted (fully or partially charged-off or became 90 days or more past due) for the years ended December 31, that were modified as TDRs within 12 months previous to default: (Dollars in Millions) Number Amount 2016 Commercial 531 $ 24 Commercial real estate 27 12 Residential mortgages 132 17 Credit card 6,827 30 Other retail 434 9 Total loans, excluding GNMA and covered loans 7,951 92 Loans purchased from GNMA mortgage pools 202 25 Covered loans 4 1 Total loans 8,157 $ 118 2015 Commercial 494 $ 21 Commercial real estate 18 8 Residential mortgages 273 36 Credit card 6,286 29 Other retail 636 12 Total loans, excluding GNMA and covered loans 7,707 106 Loans purchased from GNMA mortgage pools 598 75 Covered loans 5 1 Total loans 8,310 $ 182 2014 Commercial 629 $ 44 Commercial real estate 22 12 Residential mortgages 611 86 Credit card 6,335 33 Other retail 845 24 Total loans, excluding GNMA and covered loans 8,442 199 Loans purchased from GNMA mortgage pools 876 102 Covered loans 14 5 Total loans 9,332 $ 306
Carrying Amount of Covered Assets	The carrying amount of the covered assets at December 31, consisted of purchased impaired loans, purchased nonimpaired loans and other assets as shown in the following table: 2016 2015 (Dollars in Millions) Purchased Purchased Other Total Purchased Purchased Other Total Residential mortgage loans $ 2,248 $ 506 $ – $ 2,754 $ 2,502 $ 615 $ – $ 3,117 Other retail loans – 278 – 278 – 447 – 447 Losses reimbursable by the FDIC (a) – – 381 381 – – 517 517 Unamortized changes in FDIC asset (b) – – 423 423 – – 515 515 Covered loans 2,248 784 804 3,836 2,502 1,062 1,032 4,596 Foreclosed real estate – – 26 26 – – 32 32 Total covered assets $ 2,248 $ 784 $ 830 $ 3,862 $ 2,502 $ 1,062 $ 1,064 $ 4,628 (a) Relates to loss sharing agreements with remaining terms up to three years. (b) Represents decreases in expected reimbursements by the FDIC as a result of decreases in expected losses on the covered loans. These amounts are amortized as a reduction in interest income on covered loans over the shorter of the expected life of the respective covered loans or the remaining contractual term of the indemnification agreements.
Commercial Loans by Industry Group and Geography Excluding Covered Loans	TABLE 7 Commercial Loans by Industry Group and Geography 2016 2015 At December 31 (Dollars in Millions) Loans Percent Loans Percent Industry Group Manufacturing $ 13,779 14.8 % $ 13,404 15.2 % Real estate, rental and leasing 10,553 11.3 9,514 10.8 Finance and insurance 8,728 9.3 8,288 9.4 Retail trade 7,573 8.1 6,846 7.7 Wholesale trade 7,552 8.1 8,069 9.1 Healthcare and social assistance 6,345 6.8 5,802 6.6 Public administration 4,546 4.9 4,190 4.7 Professional, scientific and technical services 3,744 4.0 3,493 4.0 Information 3,597 3.8 3,542 4.0 Transport and storage 3,561 3.8 3,262 3.7 Arts, entertainment and recreation 3,340 3.6 2,772 3.1 Educational services 3,167 3.4 2,791 3.2 Utilities 1,747 1.9 1,435 1.6 Mining 1,645 1.8 2,208 2.5 Other services 1,625 1.7 1,703 1.9 Agriculture, forestry, fishing and hunting 1,449 1.5 1,721 1.9 Other 10,435 11.2 9,362 10.6 Total $ 93,386 100.0 % $ 88,402 100.0 % Geography California $ 12,677 13.6 % $ 11,253 12.7 % Colorado 4,362 4.7 3,930 4.5 Illinois 4,636 5.0 4,636 5.3 Minnesota 7,093 7.6 7,166 8.1 Missouri 3,536 3.8 3,309 3.8 Ohio 4,270 4.6 4,063 4.6 Oregon 2,090 2.2 1,938 2.2 Washington 3,447 3.7 3,219 3.6 Wisconsin 3,512 3.8 2,936 3.3 Iowa, Kansas, Nebraska, North Dakota, South Dakota 4,900 5.2 4,543 5.1 Arkansas, Indiana, Kentucky, Tennessee 5,168 5.5 5,106 5.8 Idaho, Montana, Wyoming 1,251 1.3 1,427 1.6 Arizona, Nevada, New Mexico, Utah 3,487 3.7 3,280 3.7 Total banking region 60,429 64.7 56,806 64.3 Florida, Michigan, New York, Pennsylvania, Texas 15,467 16.6 15,819 17.9 All other states 17,490 18.7 15,777 17.8 Total outside Company’s banking region 32,957 35.3 31,596 35.7 Total $ 93,386 100.0 % $ 88,402 100.0 %
Commercial Real Estate Loans by Property Type and Geography Excluding Covered Loans	TABLE 8 Commercial Real Estate Loans by Property Type and Geography 2016 2015 At December 31 (Dollars in Millions) Loans Percent Loans Percent Property Type Business owner occupied $ 10,899 25.3 % $ 11,186 26.6 % Commercial property Industrial 1,631 3.8 1,530 3.6 Office 5,536 12.8 5,480 13.0 Retail 4,997 11.6 4,944 11.7 Other commercial 4,064 9.4 4,165 9.9 Multi-family 9,607 22.3 8,833 21.0 Hotel/motel 3,791 8.8 3,428 8.1 Residential homebuilders 2,311 5.4 2,319 5.5 Healthcare facilities 262 .6 252 .6 Total $ 43,098 100.0 % $ 42,137 100.0 % Geography California $ 10,734 24.9 % $ 10,456 24.8 % Colorado 1,819 4.2 2,004 4.8 Illinois 1,678 3.9 1,810 4.3 Minnesota 2,177 5.0 2,022 4.8 Missouri 1,372 3.2 1,382 3.3 Ohio 1,462 3.4 1,260 3.0 Oregon 2,094 4.9 1,988 4.7 Washington 3,435 8.0 3,422 8.1 Wisconsin 2,161 5.0 2,323 5.5 Iowa, Kansas, Nebraska, North Dakota, South Dakota 2,312 5.4 2,227 5.3 Arkansas, Indiana, Kentucky, Tennessee 1,810 4.2 1,708 4.1 Idaho, Montana, Wyoming 1,271 2.9 1,275 3.0 Arizona, Nevada, New Mexico, Utah 3,257 7.6 3,259 7.7 Total banking region 35,582 82.6 35,136 83.4 Florida, Michigan, New York, Pennsylvania, Texas 3,829 8.9 3,793 9.0 All other states 3,687 8.5 3,208 7.6 Total outside Company’s banking region 7,516 17.4 7,001 16.6 Total $ 43,098 100.0 % $ 42,137 100.0 %
Summary of Nonperforming Assets	TABLE 16 Nonperforming Assets (a) At December 31 (Dollars in Millions) 2016 2015 2014 2013 2012 Commercial Commercial $ 443 $ 160 $ 99 $ 122 $ 107 Lease financing 40 14 13 12 16 Total commercial 483 174 112 134 123 Commercial Real Estate Commercial mortgages 87 92 175 182 308 Construction and development 37 35 84 121 238 Total commercial real estate 124 127 259 303 546 Residential Mortgages (b) 595 712 864 770 661 Credit Card 3 9 30 78 146 Other Retail Retail leasing 2 3 1 1 1 Home equity and second mortgages 128 136 170 167 189 Other 27 23 16 23 27 Total other retail 157 162 187 191 217 Total nonperforming loans, excluding covered loans 1,362 1,184 1,452 1,476 1,693 Covered Loans 6 8 14 127 386 Total nonperforming loans 1,368 1,192 1,466 1,603 2,079 Other Real Estate (c)(d) 186 280 288 327 381 Covered Other Real Estate (d) 26 32 37 97 197 Other Assets 23 19 17 10 14 Total nonperforming assets $ 1,603 $ 1,523 $ 1,808 $ 2,037 $ 2,671 Total nonperforming assets, excluding covered assets $ 1,571 $ 1,483 $ 1,757 $ 1,813 $ 2,088 Excluding covered assets Accruing loans 90 days or more past due (b) $ 552 $ 541 $ 550 $ 713 $ 660 Nonperforming loans to total loans .51 % .46 % .60 % .65 % .80 % Nonperforming assets to total loans plus other real estate (c) .58 % .58 % .72 % .80 % .98 % Including covered assets Accruing loans 90 days or more past due (b) $ 764 $ 831 $ 945 $ 1,189 $ 1,323 Nonperforming loans to total loans .50 % .46 % .59 % .68 % .93 % Nonperforming assets to total loans plus other real estate (c) .59 % .58 % .73 % .86 % 1.19 % Changes in Nonperforming Assets (Dollars in Millions) Commercial and Residential Covered Total Balance December 31, 2015 $ 336 $ 1,147 $ 40 $ 1,523 Additions to nonperforming assets New nonaccrual loans and foreclosed properties 1,051 431 22 1,504 Advances on loans 59 – – 59 Total additions 1,110 431 22 1,563 Reductions in nonperforming assets Paydowns, payoffs (273 ) (256 ) (3 ) (532 ) Net sales (218 ) (184 ) (25 ) (427 ) Return to performing status (29 ) (119 ) (1 ) (149 ) Charge-offs (e) (303 ) (71 ) (1 ) (375 ) Total reductions (823 ) (630 ) (30 ) (1,483 ) Net additions to (reductions in) nonperforming assets 287 (199 ) (8 ) 80 Balance December 31, 2016 $ 623 $ 948 $ 32 $ 1,603 (a) Throughout this document, nonperforming assets and related ratios do not include accruing loans 90 days or more past due. (b) Excludes $2.5 billion, $2.9 billion, $3.1 billion, $3.7 billion and $3.2 billion at December 31, 2016, 2015, 2014, 2013 and 2012, respectively, of loans purchased from GNMA mortgage pools that are 90 days or more past due that continue to accrue interest, as their repayments are primarily insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs. (c) Foreclosed GNMA loans of $373 million, $535 million, $641 million, $527 million and $548 million at December 31, 2016, 2015, 2014, 2013 and 2012, respectively, continue to accrue interest and are recorded as other assets and excluded from nonperforming assets because they are insured by the Federal Housing Administration or guaranteed by the United States Department of Veterans Affairs. (d) Includes equity investments in entities whose principal assets are other real estate owned. (e) Charge-offs exclude actions for certain card products and loan sales that were not classified as nonperforming at the time the charge-off occurred.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Components of Net Investment in Sales-Type and Direct Financing Leases	The components of the net investment in sales-type and direct financing leases at December 31 were as follows: (Dollars in Millions) 2016 2015 Aggregate future minimum lease payments to be received $ 11,257 $ 10,257 Unguaranteed residual values accruing to the lessor’s benefit 1,175 766 Unearned income (1,023 ) (887 ) Initial direct costs 237 204 Total net investment in sales-type and direct financing leases (a) $ 11,646 $ 10,340 (a) The accumulated allowance for uncollectible minimum lease payments was $83 million and $66 million at December 31, 2016 and 2015, respectively.
Minimum Future Lease Payments to be Received from Sales-Type and Direct Financing Leases	The minimum future lease payments to be received from sales-type and direct financing leases were as follows at December 31, 2016: (Dollars in Millions) 2017 $ 3,836 2018 2,884 2019 2,641 2020 1,116 2021 375 Thereafter 405

Accounting for Transfers and 37

Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Investments in Community Development and Tax-advantaged VIEs	The following table provides a summary of investments in community development and tax-advantaged VIEs that the Company has not consolidated: At December 31 (Dollars in Millions) 2016 2015 Investment carrying amount $ 5,009 $ 5,257 Unfunded capital and other commitments 2,477 2,499 Maximum exposure to loss 10,373 9,436

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and equipment at December 31 consisted of the following: (Dollars in Millions) 2016 2015 Land $ 516 $ 522 Buildings and improvements 3,383 3,348 Furniture, fixtures and equipment 2,798 2,721 Capitalized building and equipment leases 125 113 Construction in progress 29 19 6,851 6,723 Less accumulated depreciation and amortization (4,408 ) (4,210 ) Total $ 2,443 $ 2,513

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Changes in Fair Value of Capitalized MSRs	Changes in fair value of capitalized MSRs for the years ended December 31, are summarized as follows: (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 2,512 $ 2,338 $ 2,680 Rights purchased 43 29 5 Rights capitalized 524 632 382 Rights sold – – (141 ) Changes in fair value of MSRs Due to fluctuations in market interest rates (a) (55 ) (58 ) (276 ) Due to revised assumptions or models (b) 19 10 86 Other changes in fair value (c) (452 ) (439 ) (398 ) Balance at end of period $ 2,591 $ 2,512 $ 2,338 (a) Includes changes in MSR value associated with changes in market interest rates, including estimated prepayment rates and anticipated earnings on escrow deposits. (b) Includes changes in MSR value not caused by changes in market interest rates, such as changes in cost to service, ancillary income, and option adjusted spread or discount rate, as well as the impact of any model changes. 2014 includes a $44 million revaluation gain related to excess servicing rights sold. (c) Primarily represents changes due to realization of expected cash flows over time (decay).
Sensitivity to Changes in Interest Rates of the Fair Value of MSRs Portfolio and Related Derivative Instruments	The estimated sensitivity to changes in interest rates of the fair value of the MSRs portfolio and the related derivative instruments as of December 31 follows: 2016 2015 (Dollars in Millions) Down Down Down Up Up Up Down Down Down Up Up Up MSR portfolio $ (476 ) $ (209 ) $ (98 ) $ 85 $ 159 $ 270 $ (598 ) $ (250 ) $ (114 ) $ 96 $ 176 $ 344 Derivative instrument hedges 375 180 88 (84 ) (165 ) (314 ) 475 226 107 (98 ) (192 ) (377 ) Net sensitivity $ (101 ) $ (29 ) $ (10 ) $ 1 $ (6 ) $ (44 ) $ (123 ) $ (24 ) $ (7 ) $ (2 ) $ (16 ) $ (33 )
MSRs and Related Characteristics by Portfolio	A summary of the Company’s MSRs and related characteristics by portfolio as of December 31 follows: 2016 2015 (Dollars in Millions) HFA Government Conventional (c) Total HFA Government Conventional (c) Total Servicing portfolio (a) $ 34,746 $ 37,530 $ 157,771 $ 230,047 $ 26,492 $ 40,350 $ 162,533 $ 229,375 Fair value $ 398 $ 422 $ 1,771 $ 2,591 $ 297 $ 443 $ 1,772 $ 2,512 Value (bps) (b) 115 112 112 113 112 110 109 110 Weighted-average servicing fees (bps) 36 34 27 30 36 34 27 29 Multiple (value/servicing fees) 3.19 3.29 4.15 3.77 3.11 3.24 4.04 3.79 Weighted-average note rate 4.37 % 3.95 % 4.02 % 4.06 % 4.46 % 4.08 % 4.09 % 4.13 % Weighted-average age (in years) 2.9 3.8 3.8 3.7 3.1 3.6 3.4 3.4 Weighted-average expected prepayment (constant prepayment rate) 9.4 % 11.3 % 9.8 % 10.0 % 12.8 % 13.9 % 10.4 % 11.3 % Weighted-average expected life (in years) 8.0 6.8 6.9 7.0 6.1 5.7 6.6 6.4 Weighted-average option adjusted spread or discount rate (d) 9.9 % 9.2 % 7.2 % 8.0 % 11.8 % 11.2 % 9.4 % 10.0 % (a) Represents principal balance of mortgages having corresponding MSR asset. (b) Value is calculated as fair value divided by the servicing portfolio. (c) Represents loans sold primarily to GSEs. (d) Option adjusted spread is the incremental spread added to the risk-free rate to reflect optionality and other risk inherent in the MSRs. Prior to December 31, 2016 the Company valued MSRs using a static discount rate.

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible assets consisted of the following: At December 31 (Dollars in Millions) Estimated Life (a) Amortization Method (b) Balance 2016 2015 Goodwill (c ) $ 9,344 $ 9,361 Merchant processing contracts 7 years/8 years SL/AC 108 135 Core deposit benefits 22 years/5 years SL/AC 161 194 Mortgage servicing rights (c ) 2,591 2,512 Trust relationships 10 years/6 years SL/AC 59 75 Other identified intangibles 8 years/4 years SL/AC 384 434 Total $ 12,647 $ 12,711 (a) Estimated life represents the amortization period for assets subject to the straight line method and the weighted average or life of the underlying cash flows amortization period for intangibles subject to accelerated methods. If more than one amortization method is used for a category, the estimated life for each method is calculated and reported separately. (b) Amortization methods: SL = straight line method AC = accelerated methods generally based on cash flows (c) Goodwill is evaluated for impairment, but not amortized. Mortgage servicing rights are recorded at fair value, and are not amortized.
Aggregate Amortization Expense	Aggregate amortization expense consisted of the following: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Merchant processing contracts $ 28 $ 35 $ 50 Core deposit benefits 34 40 38 Trust relationships 16 21 27 Other identified intangibles 101 78 84 Total $ 179 $ 174 $ 199
Estimated Amortization Expense	The estimated amortization expense for the next five years is as follows: (Dollars in Millions) 2017 $ 171 2018 138 2019 109 2020 86 2021 65
Changes in Carrying Value of Goodwill	The following table reflects the changes in the carrying value of goodwill for the years ended December 31, 2016, 2015 and 2014: (Dollars in Millions) Wholesale Banking and Consumer and Small Wealth Management and Payment Treasury and Consolidated Balance at December 31, 2013 $ 1,605 $ 3,514 $ 1,565 $ 2,521 $ – $ 9,205 Goodwill acquired 43 166 8 – – 217 Foreign exchange translation and other – – (3 ) (30 ) – (33 ) Balance at December 31, 2014 $ 1,648 $ 3,680 $ 1,570 $ 2,491 $ – $ 9,389 Foreign exchange translation and other (1 ) 1 (3 ) (25 ) – (28 ) Balance at December 31, 2015 $ 1,647 $ 3,681 $ 1,567 $ 2,466 $ – $ 9,361 Foreign exchange translation and other – – (1 ) (16 ) – (17 ) Balance at December 31, 2016 $ 1,647 $ 3,681 $ 1,566 $ 2,450 $ – $ 9,344

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Composition of Deposits	The composition of deposits at December 31 was as follows: (Dollars in Millions) 2016 2015 Noninterest-bearing deposits $ 86,097 $ 83,766 Interest-bearing deposits Interest checking 66,298 59,169 Money market savings 109,947 86,159 Savings accounts 41,783 38,468 Time deposits 30,465 32,838 Total interest-bearing deposits 248,493 216,634 Total deposits $ 334,590 $ 300,400
Maturities of Time Deposits Outstanding	The maturities of time deposits outstanding at December 31, 2016 were as follows: (Dollars in Millions) 2017 $ 23,428 2018 3,019 2019 1,601 2020 1,267 2021 1,147 Thereafter 3 Total $ 30,465

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Summary of Short-Term Borrowings	The following table is a summary of short-term borrowings for the last three years: 2016 2015 2014 (Dollars in Millions) Amount Rate Amount Rate Amount Rate At year-end Federal funds purchased $ 447 .30 % $ 647 .23 % $ 886 .12 % Securities sold under agreements to repurchase 801 .12 1,092 .02 948 .05 Commercial paper 10,010 .30 22,022 .21 22,197 .12 Other short-term borrowings 2,705 1.00 4,116 .69 5,862 .51 Total $ 13,963 .43 % $ 27,877 .27 % $ 29,893 .19 % Average for the year Federal funds purchased (b) $ 1,015 17.17 % $ 1,169 15.05 % $ 2,366 7.94 % Securities sold under agreements to repurchase 891 .18 973 .10 798 1.07 Commercial paper 14,827 .26 21,892 .12 21,227 .12 Other short-term borrowings 3,173 1.67 3,926 1.13 5,861 .78 Total (b) $ 19,906 1.34 % $ 27,960 .89 % $ 30,252 .88 % Maximum month-end balance Federal funds purchased $ 2,487 $ 1,868 $ 3,258 Securities sold under agreements to repurchase 1,177 1,124 948 Commercial paper 21,441 23,101 22,322 Other short-term borrowings 6,771 7,656 7,417 (a) Interest and rates are presented on a fully taxable-equivalent basis utilizing a tax rate of 35 percent. (b) Average federal funds purchased and total short-term borrowings rates include amounts paid by the Company to certain corporate card customers for paying outstanding noninterest-bearing corporate card balances within certain timeframes per specific agreements. These activities reduce the Company’s short-term funding needs, and if they did not occur, the Company would use other funding alternatives, including the use of federal funds purchased. The amount of this compensation expense paid by the Company and included in federal funds purchased and total short-term borrowings rates for 2016, 2015 and 2014 was $171 million, $175 million and $186 million, respectively.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Summary of Long-term Debt	Long-term debt (debt with original maturities of more than one year) at December 31 consisted of the following: (Dollars in Millions) Rate Type Rate (a) Maturity Date 2016 2015 U.S. Bancorp (Parent Company) Subordinated notes Fixed 2.950 % 2022 $ 1,300 $ 1,300 Fixed 3.600 % 2024 1,000 1,000 Fixed 7.500 % 2026 199 199 Fixed 3.100 % 2026 1,000 – Medium-term notes Fixed 1.650% - 4.125 % 2017 - 2026 8,800 7,500 Floating 1.282% - 1.396 % 2018 - 2019 750 750 Junior subordinated debentures Fixed 3.442 % 2016 – 500 Other (b) (4 ) 204 Subtotal 13,045 11,453 Subsidiaries Federal Home Loan Bank advances Fixed 1.250% - 8.250 % 2017 - 2026 10 11 Floating .866% - 1.447 % 2017 - 2026 8,559 9,081 Bank notes Fixed 1.350% - 2.800 % 2017 - 2025 6,800 5,850 Floating .582% - 1.467 % 2017 - 2056 3,898 4,928 Other (c) 1,011 755 Subtotal 20,278 20,625 Total $ 33,323 $ 32,078 (a) Weighted-average interest rates of medium-term notes, Federal Home Loan Bank advances and bank notes were 2.48 percent, 1.17 percent and 1.57 percent, respectively. (b) Includes debt issuance fees and unrealized gains and losses and deferred amounts relating to derivative instruments. (c) Includes consolidated community development and tax-advantaged investment VIEs, capitalized lease obligations, debt issuance fees, and unrealized gains and losses and deferred amounts relating to derivative instruments.
Maturities of Long-term Debt Outstanding	Maturities of long-term debt outstanding at December 31, 2016, were: (Dollars in Millions) Parent Consolidated 2017 $ 1,250 $ 5,461 2018 1,498 7,282 2019 1,503 6,019 2020 – 43 2021 2,195 2,221 Thereafter 6,599 12,297 Total $ 13,045 $ 33,323

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Regulatory Capital Ratios	TABLE 23 Regulatory Capital Ratios U.S. Bancorp U.S. Bank National Association At December 31 (Dollars in Millions) 2016 2015 2016 2015 Basel III transitional standardized approach: Common equity tier 1 capital $ 33,720 $ 32,612 $ 36,914 $ 33,831 Tier 1 capital 39,421 38,431 37,114 34,148 Total risk-based capital 47,355 45,313 44,853 41,112 Risk-weighted assets 358,237 341,360 352,023 336,938 Common equity tier 1 capital as a percent of risk-weighted assets 9.4 % 9.6 % 10.5 % 10.0 % Tier 1 capital as a percent of risk-weighted assets 11.0 11.3 10.5 10.1 Total risk-based capital as a percent of risk-weighted assets 13.2 13.3 12.7 12.2 Tier 1 capital as a percent of adjusted quarterly average assets (leverage ratio) 9.0 9.5 8.6 8.5 Basel III transitional advanced approaches: Common equity tier 1 capital $ 33,720 $ 32,612 $ 36,914 $ 33,831 Tier 1 capital 39,421 38,431 37,114 34,148 Total risk-based capital 44,264 42,262 41,737 38,090 Risk-weighted assets 277,141 261,668 271,920 258,207 Common equity tier 1 capital as a percent of risk-weighted assets 12.2 % 12.5 % 13.6 % 13.1 % Tier 1 capital as a percent of risk-weighted assets 14.2 14.7 13.6 13.2 Total risk-based capital as a percent of risk-weighted assets 16.0 16.2 15.3 14.8 Bank Regulatory Capital Requirements Minimum Well- 2016 Common equity tier 1 capital as a percent of risk-weighted assets 5.125 % 6.500 % Tier 1 capital as a percent of risk-weighted assets 6.625 8.000 Total risk-based capital as a percent of risk-weighted assets 8.625 10.000 Tier 1 capital as a percent of adjusted quarterly average assets (leverage ratio) 4.000 5.000 2015 Common equity tier 1 capital as a percent of risk-weighted assets 4.500 % 6.500 % Tier 1 capital as a percent of risk-weighted assets 6.000 8.000 Total risk-based capital as a percent of risk-weighted assets 8.000 10.000 Tier 1 capital as a percent of adjusted quarterly average assets (leverage ratio) 4.000 5.000
Number of Shares Issued and Outstanding and Carrying Amount of Preferred Stock	The number of shares issued and outstanding and the carrying amount of each outstanding series of the Company’s preferred stock was as follows: 2016 2015 At December 31 (Dollars in Millions) Shares Liquidation Discount Carrying Shares Liquidation Discount Carrying Series A 12,510 $ 1,251 $ 145 $ 1,106 12,510 $ 1,251 $ 145 $ 1,106 Series B 40,000 1,000 – 1,000 40,000 1,000 – 1,000 Series F 44,000 1,100 12 1,088 44,000 1,100 12 1,088 Series G 43,400 1,085 10 1,075 43,400 1,085 10 1,075 Series H 20,000 500 13 487 20,000 500 13 487 Series I 30,000 750 5 745 30,000 750 5 745 Total preferred stock (a) 189,910 $ 5,686 $ 185 $ 5,501 189,910 $ 5,686 $ 185 $ 5,501 (a) The par value of all shares issued and outstanding at December 31, 2016 and 2015, was $1.00 per share.
Common Stock Repurchased	The following table summarizes the Company’s common stock repurchased in each of the last three years: (Dollars and Shares in Millions) Shares Value 2016 61 $ 2,600 2015 52 2,246 2014 54 2,262
Reconciliation of Transactions Affecting Accumulated Other Comprehensive Income (Loss) Included in Shareholders' Equity	Shareholders’ equity is affected by transactions and valuations of asset and liability positions that require adjustments to accumulated other comprehensive income (loss). The reconciliation of the transactions affecting accumulated other comprehensive income (loss) included in shareholders’ equity for the years ended December 31, is as follows: (Dollars in Millions) Unrealized Gains Unrealized Gains Unrealized Gains Unrealized Gains Foreign Currency Total 2016 Balance at beginning of period $ 111 $ 36 $ (67 ) $ (1,056 ) $ (43 ) $ (1,019 ) Changes in unrealized gains and losses (858 ) – 74 (255 ) – (1,039 ) Other-than-temporary impairment not recognized in earnings on securities available-for-sale (1 ) – – – – (1 ) Foreign currency translation adjustment (a) – – – – (28 ) (28 ) Reclassification to earnings of realized gains and losses (22 ) (18 ) 124 163 – 247 Applicable income taxes 339 7 (76 ) 35 – 305 Balance at end of period $ (431 ) $ 25 $ 55 $ (1,113 ) $ (71 ) $ (1,535 ) 2015 Balance at beginning of period $ 392 $ 52 $ (172 ) $ (1,106 ) $ (62 ) $ (896 ) Changes in unrealized gains and losses (457 ) – (25 ) (142 ) – (624 ) Foreign currency translation adjustment (a) – – – – 20 20 Reclassification to earnings of realized gains and losses – (25 ) 195 223 – 393 Applicable income taxes 176 9 (65 ) (31 ) (1 ) 88 Balance at end of period $ 111 $ 36 $ (67 ) $ (1,056 ) $ (43 ) $ (1,019 ) 2014 Balance at beginning of period $ (77 ) $ 70 $ (261 ) $ (743 ) $ (60 ) $ (1,071 ) Changes in unrealized gains and losses 764 – (41 ) (733 ) – (10 ) Other-than-temporary impairment not recognized in earnings on securities available-for-sale 1 – – – – 1 Foreign currency translation adjustment (a) – – – – (4 ) (4 ) Reclassification to earnings of realized gains and losses (3 ) (30 ) 186 144 – 297 Applicable income taxes (293 ) 12 (56 ) 226 2 (109 ) Balance at end of period $ 392 $ 52 $ (172 ) $ (1,106 ) $ (62 ) $ (896 ) (a) Represents the impact of changes in foreign currency exchange rates on the Company’s net investment in foreign operations and related hedges.
Impact to Net Income for Items Reclassified out of Accumulated Other Comprehensive Income and into Earnings	Additional detail about the impact to net income for items reclassified out of accumulated other comprehensive income (loss) and into earnings for the years ended December 31, is as follows: Impact to Net Income Affected Line Item in the (Dollars in Millions) 2016 2015 2014 Unrealized gains (losses) on securities available-for-sale Realized gains (losses) on sale of securities $ 27 $ 1 $ 11 Total securities gains (losses), net Other-than-temporary impairment recognized in earnings (5 ) (1 ) (8 ) 22 – 3 Total before tax (9 ) – (1 ) Applicable income taxes 13 – 2 Net-of-tax Unrealized gains (losses) on securities transferred from available-for-sale to held-to-maturity Amortization of unrealized gains 18 25 30 Interest income (7 ) (9 ) (12 ) Applicable income taxes 11 16 18 Net-of-tax Unrealized gains (losses) on derivative hedges Realized gains (losses) on derivative hedges (124 ) (195 ) (186 ) Net interest income 48 75 71 Applicable income taxes (76 ) (120 ) (115 ) Net-of-tax Unrealized gains (losses) on retirement plans Actuarial gains (losses), prior service cost (credit) and transition obligation (asset) amortization (163 ) (223 ) (144 ) Employee benefits expense 63 85 56 Applicable income taxes (100 ) (138 ) (88 ) Net-of-tax Total impact to net income $ (152 ) $ (242 ) $ (183 )
Components of Company's Regulatory Capital	The following table provides the components of the Company’s regulatory capital at December 31: (Dollars in Millions) 2016 2015 Basel III transitional standardized approach: Common shareholders’ equity $ 41,797 $ 40,630 Less intangible assets Goodwill (net of deferred tax liability) (8,203 ) (8,295 ) Other disallowed intangible assets (427 ) (335 ) Other (a) 553 612 Total common equity tier 1 capital 33,720 32,612 Qualifying preferred stock 5,501 5,501 Noncontrolling interests eligible for tier 1 capital 203 318 Other (3 ) – Total tier 1 capital 39,421 38,431 Eligible portion of allowance for credit losses 4,357 4,255 Subordinated debt and noncontrolling interests eligible for tier 2 capital 3,576 2,616 Other 1 11 Total tier 2 capital 7,934 6,882 Total risk-based capital $ 47,355 $ 45,313 Risk-weighted assets $ 358,237 $ 341,360 Basel III transitional advanced approaches: Common shareholders’ equity $ 41,797 $ 40,630 Less intangible assets Goodwill (net of deferred tax liability) (8,203 ) (8,295 ) Other disallowed intangible assets (427 ) (335 ) Other (a) 553 612 Total common equity tier 1 capital 33,720 32,612 Qualifying preferred stock 5,501 5,501 Noncontrolling interests eligible for tier 1 capital 203 318 Other (3 ) – Total tier 1 capital 39,421 38,431 Eligible portion of allowance for credit losses 1,266 1,204 Subordinated debt and noncontrolling interests eligible for tier 2 capital 3,576 2,616 Other 1 11 Total tier 2 capital 4,843 3,831 Total risk-based capital $ 44,264 $ 42,262 Risk-weighted assets $ 277,141 $ 261,668 (a) Includes the impact of items included in other comprehensive income (loss), such as unrealized gains (losses) on available-for-sale securities, accumulated net gains on cash flow hedges, pension liability adjustments, etc.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Components of Earnings Per Share	The components of earnings per share were: Year Ended December 31 (Dollars and Shares in Millions, Except Per Share Data) 2016 2015 2014 Net income attributable to U.S. Bancorp $ 5,888 $ 5,879 $ 5,851 Preferred dividends (281 ) (247 ) (243 ) Impact of the purchase of noncontrolling interests (a) 9 – – Earnings allocated to participating stock awards (27 ) (24 ) (25 ) Net income applicable to U.S. Bancorp common shareholders $ 5,589 $ 5,608 $ 5,583 Average common shares outstanding 1,718 1,764 1,803 Net effect of the exercise and assumed purchase of stock awards 6 8 10 Average diluted common shares outstanding 1,724 1,772 1,813 Earnings per common share $ 3.25 $ 3.18 $ 3.10 Diluted earnings per common share $ 3.24 $ 3.16 $ 3.08 (a) Represents the difference between the carrying amount and amount paid by the Company to purchase third party investor holdings of the preferred stock of USB Realty Corp, a consolidated subsidiary of the Company.

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Summary of Changes in Projected Benefit Obligation, Plan Assets, Funded Status, Amounts Recognized in Consolidated Balance Sheet and Accumulated Other Comprehensive Income (Loss)	The following table summarizes the changes in benefit obligations and plan assets for the years ended December 31, and the funded status and amounts recognized in the Consolidated Balance Sheet at December 31 for the retirement plans: Pension Plans Postretirement (Dollars in Millions) 2016 2015 2016 2015 Change In Projected Benefit Obligation Benefit obligation at beginning of measurement period $ 4,650 $ 4,612 $ 93 $ 104 Service cost 177 188 – – Interest cost 211 195 3 3 Participants’ contributions – – 10 10 Actuarial loss (gain) 234 (176 ) (14 ) (5 ) Lump sum settlements (61 ) (37 ) – – Benefit payments (138 ) (132 ) (19 ) (21 ) Federal subsidy on benefits paid – – 2 2 Benefit obligation at end of measurement period (a) $ 5,073 $ 4,650 $ 75 $ 93 Change In Fair Value Of Plan Assets Fair value at beginning of measurement period $ 3,355 $ 3,187 $ 82 $ 85 Actual return on plan assets 230 (99 ) 2 – Employer contributions 383 436 7 8 Participants’ contributions – – 10 10 Lump sum settlements (61 ) (37 ) – – Benefit payments (138 ) (132 ) (19 ) (21 ) Fair value at end of measurement period $ 3,769 $ 3,355 $ 82 $ 82 Funded (Unfunded) Status $ (1,304 ) $ (1,295 ) $ 7 $ (11 ) Components Of The Consolidated Balance Sheet Noncurrent benefit asset $ – $ – $ 7 $ – Current benefit liability (22 ) (21 ) – – Noncurrent benefit liability (1,282 ) (1,274 ) – (11 ) Recognized amount $ (1,304 ) $ (1,295 ) $ 7 $ (11 ) Accumulated Other Comprehensive Income (Loss), Pretax Net actuarial gain (loss) $ (1,901 ) $ (1,806 ) $ 66 $ 55 Net prior service credit (cost) 2 7 25 28 Recognized amount $ (1,899 ) $ (1,799 ) $ 91 $ 83 (a) At December 31, 2016 and 2015, the accumulated benefit obligation for all pension plans was $4.6 billion and $4.3 billion.
Pension Plans with Benefit Obligations in Excess of Plan Assets	The following table provides information for pension plans with benefit obligations in excess of plan assets at December 31: (Dollars in Millions) 2016 2015 Pension Plans with Projected Benefit Obligations in Excess of Plan Assets Projected benefit obligation $ 5,073 $ 4,650 Fair value of plan assets 3,769 3,355 Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets Projected benefit obligation $ 5,073 $ 4,650 Accumulated benefit obligation 4,625 4,310 Fair value of plan assets 3,769 3,355
Components of Net Periodic Benefit Cost and Other Amounts Recognized in Accumulated Other Comprehensive Income (Loss)	The following table sets forth the components of net periodic benefit cost and other amounts recognized in accumulated other comprehensive income (loss) for the years ended December 31 for the retirement plans: Pension Plans Postretirement Welfare Plan (Dollars in Millions) 2016 2015 2014 2016 2015 2014 Components Of Net Periodic Benefit Cost Service cost $ 177 $ 188 $ 152 $ – $ – $ – Interest cost 211 195 197 3 3 3 Expected return on plan assets (266 ) (223 ) (208 ) (1 ) (1 ) (1 ) Prior service cost (credit) and transition obligation (asset) amortization (5 ) (4 ) (5 ) (3 ) (3 ) (3 ) Actuarial loss (gain) amortization 175 234 158 (4 ) (4 ) (6 ) Net periodic benefit cost $ 292 $ 390 $ 294 $ (5 ) $ (5 ) $ (7 ) Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income (Loss) Net actuarial gain (loss) arising during the year $ (270 ) $ (146 ) $ (719 ) $ 15 $ 4 $ (14 ) Net actuarial loss (gain) amortized during the year 175 234 158 (4 ) (4 ) (6 ) Net prior service cost (credit) and transition obligation (asset) amortized during the year (5 ) (4 ) (5 ) (3 ) (3 ) (3 ) Total recognized in other comprehensive income (loss) $ (100 ) $ 84 $ (566 ) $ 8 $ (3 ) $ (23 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) (a)(b) $ (392 ) $ (306 ) $ (860 ) $ 13 $ 2 $ (16 ) (a) The pretax estimated actuarial loss (gain) and prior service cost (credit) for the pension plans that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost in 2017 are $127 million and $(2) million, respectively. (b) The pretax estimated actuarial loss (gain) and prior service cost (credit) for the postretirement welfare plan that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost in 2017 are $(6) million and $(3) million, respectively.
Weighted Average Assumptions to Determine Projected Benefit Obligations	The following table sets forth weighted average assumptions used to determine the projected benefit obligations at December 31: Pension Plans Postretirement Welfare Plan (Dollars in Millions) 2016 2015 2016 2015 Discount rate (a) 4.27 % 4.45 % 3.57 % 3.59 % Rate of compensation increase (b) 3.58 4.06 * * Health care cost trend rate for the next year (c) 7.00 % 6.50 % Effect on accumulated postretirement benefit obligation One percent increase $ 4 $ 5 One percent decrease (4 ) (5 ) (a) The discount rates were developed using a cash flow matching bond model with a modified duration for the qualified pension plan, non-qualified pension plan and postretirement welfare plan of 15.5, 12.1, and 6.2 years, respectively, for 2016, and 15.0, 11.9 and 6.3 years, respectively, for 2015. (b) Determined on an active liability-weighted basis. (c) The 2016 and 2015 rates are assumed to decrease gradually to 5.00 percent by 2025 and 2019, respectively, and remain at this level thereafter. * Not applicable
Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost	The following table sets forth weighted average assumptions used to determine net periodic benefit cost for the years ended December 31: Pension Plans Postretirement Welfare Plan (Dollars in Millions) 2016 2015 2014 2016 2015 2014 Discount rate (a) 4.45 % 4.13 % 4.97 % 3.59 % 3.46 % 3.93 % Expected return on plan assets (b) 7.50 7.50 7.50 1.50 1.50 1.50 Rate of compensation increase (c) 4.06 4.07 4.02 * * * Health care cost trend rate (d) Prior to age 65 6.50 % 7.00 % 7.50 % After age 65 6.50 7.00 7.50 Effect on total of service cost and interest cost One percent increase $ – $ – $ – One percent decrease – – – (a) The discount rates were developed using a cash flow matching bond model with a modified duration for the qualified pension plan, non-qualified pension plan and postretirement welfare plan of 15.0, 11.9, and 6.3 years, respectively, for 2016, and 15.9, 12.4 and 6.8 years, respectively, for 2015. (b) With the help of an independent pension consultant, the Company considers several sources when developing its expected long-term rates of return on plan assets assumptions, including, but not limited to, past returns and estimates of future returns given the plans’ asset allocation, economic conditions, and peer group LTROR information. The Company determines its expected long-term rates of return reflecting current economic conditions and plan assets. (c) Determined on an active liability weighted basis. (d) The pre-65 and post-65 rates are both assumed to decrease gradually to 5.00 percent by 2019 and remain at that level thereafter. * Not applicable
Summary of Plan Investment Assets Measured at Fair Value	The following table summarizes plan investment assets measured at fair value at December 31: Qualified Pension Plan Postretirement 2016 2015 2016 2015 (Dollars in Millions) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 1 Cash and cash equivalents $ 49 $ – $ – $ 49 $ 64 $ – $ – $ 64 $ 82 $ 82 Debt securities 362 577 – 939 361 465 – 826 – – Corporate stock Domestic equity securities – – – – 178 – – 178 – – Mid-small cap equity securities (a) – – – – 146 – – 146 – – International equity securities – – – – 123 – – 123 – – Real estate equity securities (b) 169 – – 169 163 – – 163 – – Mutual funds Debt securities – 164 – 164 – 197 – 197 – – Emerging markets equity securities – 155 – 155 – 81 – 81 – – Other – – 1 1 – – 1 1 – – $ 580 $ 896 $ 1 1,477 $ 1,035 $ 743 $ 1 1,779 82 82 Plan investment assets not classified in fair value hierarchy (e) Collective investment funds Domestic equity securities 977 679 Mid-small cap equity securities (c) 303 68 Emerging markets equity securities – 75 International equity securities 725 533 Hedge funds (d) 188 171 Private equity funds 99 50 Total plan investment assets at fair value $ 3,769 $ 3,355 $ 82 $ 82 (a) At December 31, 2015, securities included $139 million in domestic equities and $7 million in international equities. (b) At December 31, 2016 and 2015, securities included $98 million and $90 million in domestic equities, respectively, and $71 million and $73 million in international equities, respectively. (c) At December 31, 2016, securities included $303 million in domestic equities. At December 31, 2015, securities included $30 million in domestic equities, $20 million in international equities and $18 million in cash and cash equivalents. (d) This category consists of several investment strategies diversified across several hedge fund managers. (e) These investments are valued based on net asset value per share as a practical expedient; fair values are provided to reconcile to total investment assets of the plans at fair value.
Summarizes the Changes for Qualified Pension Plan Assets Measured at Fair Value Using Significant Unobservable Inputs (Level 3)	The following table summarizes the changes in fair value for qualified pension plan investment assets measured at fair value using significant unobservable inputs (Level 3) for the years ended December 31: (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 1 $ 2 $ 4 Unrealized gains (losses) relating to assets still held at end of year – (1 ) (2 ) Balance at end of period $ 1 $ 1 $ 2
Expected Future Benefit Payments	The following benefit payments are expected to be paid from the retirement plans for the years ended December 31: (Dollars in Millions) Pension Postretirement (a) Medicare Part D 2017 $ 191 $ 10 $ 2 2018 202 10 2 2019 215 10 2 2020 230 9 2 2021 244 9 2 2022 – 2026 1,448 33 5 (a) Net of expected retiree contributions and before Medicare Part D subsidy.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Options Outstanding and Exercised Under Prior and Existing Stock Incentive Plans	The following is a summary of stock options outstanding and exercised under prior and existing stock incentive plans of the Company: Year Ended December 31 Stock Weighted- Weighted-Average Aggregate 2016 Number outstanding at beginning of period 25,725,708 $ 29.82 Granted 1,644,288 39.50 Exercised (10,163,668 ) 31.09 Cancelled (a) (147,087 ) 35.18 Number outstanding at end of period (b) 17,059,241 $ 29.95 4.1 $ 365 Exercisable at end of period 13,856,142 $ 27.53 3.1 $ 330 2015 Number outstanding at beginning of period 33,649,198 $ 29.31 Granted 1,122,697 44.28 Exercised (8,721,834 ) 29.59 Cancelled (a) (324,353 ) 32.93 Number outstanding at end of period (b) 25,725,708 $ 29.82 3.6 $ 331 Exercisable at end of period 22,446,095 $ 28.68 3.0 $ 314 2014 Number outstanding at beginning of period 46,724,765 $ 29.12 Granted 1,246,451 40.32 Exercised (13,851,590 ) 29.59 Cancelled (a) (470,428 ) 31.12 Number outstanding at end of period (b) 33,649,198 $ 29.31 4.0 $ 526 Exercisable at end of period 28,923,260 $ 28.79 3.4 $ 467 (a) Options cancelled include both non-vested (i.e., forfeitures) and vested options. (b) Outstanding options include stock-based awards that may be forfeited in future periods. The impact of the estimated forfeitures is reflected in compensation expense.
Weighted-Average Estimated Fair Value of Stock Options Granted and Assumptions Utilized by Company for Newly Issued Grants	The following table includes the weighted-average estimated fair value of stock options granted and the assumptions utilized by the Company for newly issued grants: Year Ended December 31 2016 2015 2014 Estimated fair value $ 10.28 $ 12.23 $ 11.38 Risk-free interest rates 1.3 % 1.7 % 1.7 % Dividend yield 2.6 % 2.6 % 2.6 % Stock volatility factor .36 .37 .38 Expected life of options (in years) 5.5 5.5 5.5
Summary of Certain Stock Option Activity	The following summarizes certain stock option activity of the Company: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Fair value of options vested $ 18 $ 25 $ 33 Intrinsic value of options exercised 138 130 171 Cash received from options exercised 316 257 408 Tax benefit realized from options exercised 53 50 66
Stock Options Outstanding Additional Information	Additional information regarding stock options outstanding as of December 31, 2016, is as follows: Outstanding Options Exercisable Options Range of Exercise Prices Shares Weighted- Weighted- Shares Weighted- $11.02 – $15.00 1,997,288 2.1 $ 11.14 1,997,288 $ 11.14 $15.01 – $20.00 156,573 .9 19.63 156,573 19.63 $20.01 – $25.00 1,611,033 3.1 23.85 1,611,033 23.85 $25.01 – $30.00 4,282,283 4.4 28.28 4,282,283 28.28 $30.01 – $35.00 4,929,704 2.0 32.45 4,688,105 32.37 $35.01 – $40.00 1,956,643 7.6 38.93 340,870 36.25 $40.01 – $44.32 2,125,717 7.6 42.32 779,990 41.67 Total 17,059,241 4.1 $ 29.95 13,856,142 $ 27.53
Summary of Company's Restricted Shares of Stock and Unit Awards	A summary of the status of the Company’s restricted shares of stock and unit awards is presented below: 2016 2015 2014 Year Ended December 31 Shares Weighted- Value Shares Weighted- Value Shares Weighted- Value Outstanding at beginning of period 6,894,831 $ 38.44 7,921,571 $ 34.09 8,653,859 $ 29.96 Granted 4,879,421 39.65 2,897,396 44.24 3,133,168 40.37 Vested (3,069,035 ) 37.25 (3,428,736 ) 33.27 (3,409,650 ) 29.38 Cancelled (439,710 ) 40.18 (495,400 ) 38.66 (455,806 ) 34.05 Outstanding at end of period 8,265,507 $ 39.50 6,894,831 $ 38.44 7,921,571 $ 34.09

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Components of Income Tax Expense	The components of income tax expense were: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Federal Current $ 2,585 $ 1,956 $ 1,888 Deferred (711 ) (223 ) (126 ) Federal income tax 1,874 1,733 1,762 State Current 337 346 331 Deferred (50 ) 18 (6 ) State income tax 287 364 325 Total income tax provision $ 2,161 $ 2,097 $ 2,087
Reconciliation of Expected Income Tax Expense at Federal Statutory Rate of 35 Percent to Company's Applicable Income Tax Expense	A reconciliation of expected income tax expense at the federal statutory rate of 35 percent to the Company’s applicable income tax expense follows: Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Tax at statutory rate $ 2,837 $ 2,810 $ 2,798 State income tax, at statutory rates, net of federal tax benefit 244 237 211 Tax effect of Tax credits and benefits, net of related expenses (710 ) (700 ) (701 ) Tax-exempt income (196 ) (201 ) (205 ) Noncontrolling interests (20 ) (19 ) (20 ) Other items 6 (30 ) (a) 4 Applicable income taxes $ 2,161 $ 2,097 $ 2,087 (a) Includes the resolution of certain tax matters with taxing authorities in the first quarter of 2015.
Reconciliation of Changes in Federal, State and Foreign Unrecognized Tax Position Balances	A reconciliation of the changes in the federal, state and foreign unrecognized tax position balances are summarized as follows Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Balance at beginning of period $ 243 $ 267 $ 264 Additions (reductions) for tax positions taken in prior years 57 (17 ) 31 Additions for tax positions taken in the current year 12 13 4 Exam resolutions (6 ) (17 ) (22 ) Statute expirations (4 ) (3 ) (10 ) Balance at end of period $ 302 $ 243 $ 267
Significant Components of the Company's Net Deferred Tax Asset (Liability)	The significant components of the Company’s net deferred tax asset (liability) follows: At December 31 (Dollars in Millions) 2016 2015 Deferred Tax Assets Allowance for credit losses $ 1,667 $ 1,615 Federal, state and foreign net operating loss and credit carryforwards 971 464 Accrued expenses 806 764 Partnerships and other investment assets 521 380 Pension and postretirement benefits 394 247 Securities available-for-sale and financial instruments 220 – Stock compensation 120 131 Other deferred tax assets, net 291 219 Gross deferred tax assets 4,990 3,820 Deferred Tax Liabilities Leasing activities (3,096 ) (3,026 ) Goodwill and other intangible assets (962 ) (859 ) Mortgage servicing rights (883 ) (859 ) Loans (234 ) (204 ) Fixed assets (60 ) (111 ) Securities available-for-sale and financial instruments – (47 ) Other deferred tax liabilities, net (113 ) (55 ) Gross deferred tax liabilities (5,348 ) (5,161 ) Valuation allowance (121 ) (137 ) Net Deferred Tax Asset (Liability) $ (479 ) $ (1,478 )

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Asset and Liability Management Derivative Positions of Company	The following table summarizes the asset and liability management derivative positions of the Company: Asset Derivatives Liability Derivatives (Dollars in Millions) Notional Fair Weighted-Average In Years Notional Fair Weighted-Average In Years December 31, 2016 Fair value hedges Interest rate contracts Receive fixed/pay floating swaps $ 2,550 $ 49 4.28 $ 1,250 $ 12 2.32 Cash flow hedges Interest rate contracts Pay fixed/receive floating swaps 3,272 108 8.63 2,787 35 .83 Net investment hedges Foreign exchange forward contracts 1,347 15 .04 – – – Other economic hedges Interest rate contracts Futures and forwards Buy 1,748 13 .09 1,722 18 .05 Sell 2,278 129 .08 4,214 43 .09 Options Purchased 1,565 43 8.60 – – – Written 1,073 25 .07 12 1 .06 Receive fixed/pay floating swaps 6,452 26 11.48 1,561 16 6.54 Pay fixed/receive floating swaps 4,705 13 6.51 2,320 9 7.80 Foreign exchange forward contracts 849 6 .02 867 6 .02 Equity contracts 11 – .40 102 1 .57 Credit contracts 1,397 – 3.38 3,674 2 3.57 Other (a) 19 – .03 830 106 3.42 Total $ 27,266 $ 427 $ 19,339 $ 249 December 31, 2015 Fair value hedges Interest rate contracts Receive fixed/pay floating swaps $ 3,050 $ 73 4.43 $ – $ – – Cash flow hedges Interest rate contracts Pay fixed/receive floating swaps 1,772 7 9.22 5,009 146 1.13 Net investment hedges Foreign exchange forward contracts 1,140 4 .04 – – – Other economic hedges Interest rate contracts Futures and forwards Buy 3,812 17 .07 452 1 .06 Sell 3,201 12 .09 2,559 7 .12 Options Purchased 2,935 – .06 – – – Written 3,199 29 .10 5 1 .08 Receive fixed/pay floating swaps 3,733 42 9.98 4,748 18 10.18 Pay fixed/receive floating swaps 287 2 9.82 4,158 35 9.97 Foreign exchange forward contracts 3,023 13 .01 2,380 10 .03 Equity contracts 62 – .47 24 1 .82 Credit contracts 1,192 2 2.58 2,821 3 2.99 Other (a) 36 – .04 662 64 2.60 Total $ 27,442 $ 201 $ 22,818 $ 286 (a) Includes short-term underwriting purchase and sale commitments with total asset and liability notional values of $19 million and $36 million at December 31, 2016 and 2015, respectively, and derivative liability swap agreements related to the sale of a portion of the Company’s Class B common shares of Visa Inc. The Visa swap agreements had a total notional value, fair value and weighted average remaining maturity of $811 million, $106 million and 3.50 years at December 31, 2016, respectively, compared to $626 million, $64 million and 2.75 years at December 31, 2015, respectively.
Customer-Related Derivative Positions of Company	The following table summarizes the customer-related derivative positions of the Company: Asset Derivatives Liability Derivatives (Dollars in Millions) Notional Fair Weighted-Average Notional Fair Weighted-Average December 31, 2016 Interest rate contracts Receive fixed/pay floating swaps $ 38,501 $ 930 4.07 $ 39,403 $ 632 4.89 Pay fixed/receive floating swaps 36,671 612 4.99 40,324 996 4.07 Options Purchased 14,545 51 1.85 125 2 1.37 Written 125 3 1.37 13,518 50 1.70 Futures Buy 306 – 1.96 7,111 7 .90 Foreign exchange rate contracts Forwards, spots and swaps 20,664 849 .58 19,640 825 .60 Options Purchased 2,376 98 1.67 – – – Written – – – 2,376 98 1.67 Total $ 113,188 $ 2,543 $ 122,497 $ 2,610 December 31, 2015 Interest rate contracts Receive fixed/pay floating swaps $ 32,647 $ 1,097 5.69 $ 14,068 $ 54 4.71 Pay fixed/receive floating swaps 10,685 43 4.55 35,045 1,160 5.74 Options Purchased 8,705 10 2.61 146 1 2.23 Written 146 2 2.23 8,482 9 2.57 Futures Buy – – – 2,859 2 .84 Sell 45 – .97 – – – Foreign exchange rate contracts Forwards, spots and swaps 18,399 851 .59 17,959 830 .58 Options Purchased 1,485 43 1.19 – – – Written – – – 1,485 43 1.19 Total $ 72,112 $ 2,046 $ 80,044 $ 2,099
Summary of Effective Portion of Gains (Losses) Recognized in Other Comprehensive Income (Loss) and Gains (Losses) Reclassified from Other Comprehensive Income (Loss) into Earnings	The table below shows the effective portion of the gains (losses) recognized in other comprehensive income (loss) and the gains (losses) reclassified from other comprehensive income (loss) into earnings (net-of-tax) for the years ended December 31: Gains (Losses) Recognized in Other Gains (Losses) Reclassified from (Dollars in Millions) 2016 2015 2014 2016 2015 2014 Asset and Liability Management Positions Cash flow hedges Interest rate contracts (a) $ 46 $ (15 ) $ (26 ) $ (76 ) $ (120 ) $ (115 ) Net investment hedges Foreign exchange forward contracts 33 101 130 – – – Note: Ineffectiveness on cash flow and net investment hedges was not material for the years ended December 31, 2016, 2015 and 2014. (a) Gains (Losses) reclassified from other comprehensive income (loss) into interest income on loans and interest expense on long-term debt.
Summary of Gains (Losses) Recognized in Earnings for Fair Value Hedges, Other Economic Hedges and Customer-Related Positions	The table below shows the gains (losses) recognized in earnings for fair value hedges, other economic hedges and the customer-related positions for the years ended December 31: (Dollars in Millions) Location of Gains (Losses) Recognized in Earnings 2016 2015 2014 Asset and Liability Management Positions Fair value hedges (a) Interest rate contracts Other noninterest income $ (31 ) $ 7 $ 29 Other economic hedges Interest rate contracts Futures and forwards Mortgage banking revenue 101 186 (122 ) Purchased and written options Mortgage banking revenue 331 191 287 Receive fixed/pay floating swaps Mortgage banking revenue 226 139 384 Pay fixed/receive floating swaps Mortgage banking revenue (140 ) (33 ) – Foreign exchange forward contracts Commercial products revenue (14 ) 108 (29 ) Equity contracts Compensation expense 1 (1 ) 2 Credit contracts Other noninterest income 1 2 – Other Other noninterest income (39 ) – (43 ) Customer-Related Positions Interest rate contracts Receive fixed/pay floating swaps Other noninterest income (708 ) 360 686 Pay fixed/receive floating swaps Other noninterest income 769 (320 ) (652 ) Purchased and written options Other noninterest income (5 ) 3 – Futures Other noninterest income (6 ) 1 – Foreign exchange rate contracts Forwards, spots and swaps Commercial products revenue 88 74 66 Purchased and written options Commercial products revenue (1 ) 2 1 (a) Gains (Losses) on items hedged by interest rate contracts included in noninterest income (expense), were $31 million, $(7) million and $(27) million for the years ended December 31, 2016, 2015 and 2014, respectively. The ineffective portion was immaterial for the years ended December 31, 2016, 2015 and 2014.

Netting Arrangements for Cert50

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities (Tables)	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Summary of Maturities by Category of Collateral Pledged for Repurchase Agreements and Securities Loaned Transactions	The following table summarizes the maturities by category of collateral pledged for repurchase agreements and securities loaned transactions: (Dollars in Millions) Overnight and Less Than Total December 31, 2016 Repurchase agreements U.S. Treasury and agencies $ 60 $ – $ 60 Residential agency mortgage-backed securities 681 30 711 Corporate debt securities 30 – 30 Total repurchase agreements 771 30 801 Securities loaned Corporate debt securities 223 – 223 Total securities loaned 223 – 223 Gross amount of recognized liabilities $ 994 $ 30 $ 1,024 December 31, 2015 Repurchase agreements U.S. Treasury and agencies $ 122 $ – $ 122 Residential agency mortgage-backed securities 802 168 970 Gross amount of recognized liabilities $ 924 $ 168 $ 1,092
Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet Assets But Available for Offset in Event of Default	The following tables provide information on the Company’s netting adjustments, and items not offset on the Consolidated Balance Sheet but available for offset in the event of default: Gross Recognized Gross Amounts Consolidated (a) Net Amounts Consolidated Gross Amounts Not Offset on (Dollars in Millions) Financial (b) Collateral (c) Net December 31, 2016 Derivative assets (d) $ 2,122 $ (984 ) $ 1,138 $ (78 ) $ (10 ) $ 1,050 Reverse repurchase agreements 77 – 77 (60 ) (17 ) – Securities borrowed 944 – 944 (10 ) (909 ) 25 Total $ 3,143 $ (984 ) $ 2,159 $ (148 ) $ (936 ) $ 1,075 December 31, 2015 Derivative assets (d) $ 1,879 $ (807 ) $ 1,072 $ (82 ) $ – $ 990 Reverse repurchase agreements 106 – 106 (102 ) (4 ) – Securities borrowed 772 – 772 – (753 ) 19 Total $ 2,757 $ (807 ) $ 1,950 $ (184 ) $ (757 ) $ 1,009 (a) Includes $210 million and $165 million of cash collateral related payables that were netted against derivative assets at December 31, 2016 and 2015, respectively. (b) For derivative assets this includes any derivative liability fair values that could be offset in the event of counterparty default; for reverse repurchase agreements this includes any repurchase agreement payables that could be offset in the event of counterparty default; for securities borrowed this includes any securities loaned payables that could be offset in the event of counterparty default. (c) Includes the fair value of securities received by the Company from the counterparty. These securities are not included on the Consolidated Balance Sheet unless the counterparty defaults. (d) Excludes $848 million and $368 million of derivative assets centrally cleared or otherwise not subject to netting arrangements at December 31, 2016 and 2015, respectively.
Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet Liabilities But Available for Offset in Event of Default	Gross Recognized Gross Amounts Consolidated (a) Net Amounts Consolidated Gross Amounts Not Offset on the Consolidated Balance Sheet Net (Dollars in Millions) Financial (b) Collateral (c) December 31, 2016 Derivative liabilities (d) $ 1,951 $ (1,185 ) $ 766 $ (78 ) $ – $ 688 Repurchase agreements 801 – 801 (60 ) (741 ) – Securities loaned 223 – 223 (10 ) (211 ) 2 Total $ 2,975 $ (1,185 ) $ 1,790 $ (148 ) $ (952 ) $ 690 December 31, 2015 Derivative liabilities (d) $ 1,809 $ (1,283 ) $ 526 $ (82 ) $ – $ 444 Repurchase agreements 1,092 – 1,092 (102 ) (990 ) – Total $ 2,901 $ (1,283 ) $ 1,618 $ (184 ) $ (990 ) $ 444 (a) Includes $411 million and $641 million of cash collateral related receivables that were netted against derivative liabilities at December 31, 2016 and 2015, respectively. (b) For derivative liabilities this includes any derivative asset fair values that could be offset in the event of counterparty default; for repurchase agreements this includes any reverse repurchase agreement receivables that could be offset in the event of counterparty default; for securities loaned this includes any securities borrowed receivables that could be offset in the event of counterparty default. (c) Includes the fair value of securities pledged by the Company to the counterparty. These securities are included on the Consolidated Balance Sheet unless the Company defaults. (d) Excludes $908 million and $576 million of derivative liabilities centrally cleared or otherwise not subject to netting arrangements at December 31, 2016 and 2015, respectively.

Fair Values of Assets and Lia51

Fair Values of Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Valuation Assumption Ranges for Level 3 Available-for-Sale Investment Securities	The following table shows the significant valuation assumption ranges for Level 3 available-for-sale investment securities at December 31, 2016: Minimum Maximum Average Residential Prime Non-Agency Mortgage-Backed Securities (a) Estimated lifetime prepayment rates 6 % 19 % 14 % Lifetime probability of default rates – 6 4 Lifetime loss severity rates 15 65 35 Discount margin 2 7 3 Residential Non-Prime Non-Agency Mortgage-Backed Securities (b) Estimated lifetime prepayment rates 3 % 16 % 9 % Lifetime probability of default rates 4 12 7 Lifetime loss severity rates 15 80 49 Discount margin 1 10 4 (a) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (b) Includes all securities not meeting the conditions to be designated as prime.
Valuation Assumption Ranges for MSRs	The following table shows the significant valuation assumption ranges for MSRs at December 31, 2016: Minimum Maximum Average Expected prepayment 6 % 18 % 10 % Option adjusted spread 7 10 8
Valuation Assumption Ranges for Derivative Commitments	The following table shows the significant valuation assumption ranges for the Company’s derivative commitments to purchase and originate mortgage loans at December 31, 2016: Minimum Maximum Average Expected loan close rate 33 % 100 % 80 % Inherent MSR value (basis points per loan) (34 ) 203 113
Balances of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table summarizes the balances of assets and liabilities measured at fair value on a recurring basis: (Dollars in Millions) Level 1 Level 2 Level 3 Netting Total December 31, 2016 Available-for-sale securities U.S. Treasury and agencies $ 16,355 $ 772 $ – $ – $ 17,127 Mortgage-backed securities Residential Agency – 43,138 – – 43,138 Non-agency Prime (a) – – 242 – 242 Non-prime (b) – – 195 – 195 Commercial Agency – 15 – – 15 Asset-backed securities Other – 481 2 – 483 Obligations of state and political subdivisions – 5,039 – – 5,039 Corporate debt securities – – 9 – 9 Other investments 36 – – – 36 Total available-for-sale 16,391 49,445 448 – 66,284 Mortgage loans held for sale – 4,822 – – 4,822 Mortgage servicing rights – – 2,591 – 2,591 Derivative assets – 2,416 554 (984 ) 1,986 Other assets 183 1,137 – – 1,320 Total $ 16,574 $ 57,820 $ 3,593 $ (984 ) $ 77,003 Derivative liabilities $ 7 $ 2,469 $ 383 $ (1,185 ) $ 1,674 Short-term borrowings and other liabilities (c) 142 938 – – 1,080 Total $ 149 $ 3,407 $ 383 $ (1,185 ) $ 2,754 December 31, 2015 Available-for-sale securities U.S. Treasury and agencies $ 3,708 $ 888 $ – $ – $ 4,596 Mortgage-backed securities Residential Agency – 50,076 – – 50,076 Non-agency Prime (a) – – 318 – 318 Non-prime (b) – – 240 – 240 Commercial Agency – 52 – – 52 Asset-backed securities Collateralized debt obligations/Collateralized loan obligations – 19 – – 19 Other – 539 2 – 541 Obligations of state and political subdivisions – 5,316 – – 5,316 Corporate debt securities 102 499 9 – 610 Perpetual preferred securities 48 113 – – 161 Other investments 40 28 – – 68 Total available-for-sale 3,898 57,530 569 – 61,997 Mortgage loans held for sale – 3,110 – – 3,110 Mortgage servicing rights – – 2,512 – 2,512 Derivative assets – 1,632 615 (807 ) 1,440 Other assets 202 589 – – 791 Total $ 4,100 $ 62,861 $ 3,696 $ (807 ) $ 69,850 Derivative liabilities $ 2 $ 2,266 $ 117 $ (1,283 ) $ 1,102 Short-term borrowings (c) 122 645 – – 767 Total $ 124 $ 2,911 $ 117 $ (1,283 ) $ 1,869 (a) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (b) Includes all securities not meeting the conditions to be designated as prime. (c) Primarily represents the Company’s obligation on securities sold short required to be accounted for at fair value per applicable accounting guidance.
Changes in Fair Value for All Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)	The following table presents the changes in fair value for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31: (Dollars in Millions) Beginning Net Gains Net Gains Purchases Sales Principal Issuances Settlements End of Net Change 2016 Available-for-sale securities Mortgage-backed securities Residential non-agency Prime (a) $ 318 $ (1 ) $ – $ – $ – $ (75 ) $ – $ – $ 242 $ – Non-prime (b) 240 (1 ) (2 ) – – (42 ) – – 195 (2 ) Asset-backed securities Other 2 – – – – – – – 2 – Corporate debt securities 9 – – – – – – – 9 – Total available-for-sale 569 (2 ) (c) (2 ) (f) – – (117 ) – – 448 (2 ) Mortgage servicing rights 2,512 (488 ) (d) – 43 – – 524 (g) – 2,591 (488 ) (d) Net derivative assets and liabilities 498 332 (e) – 2 (14 ) – – (647 ) 171 (257 ) (h) 2015 Available-for-sale securities Mortgage-backed securities Residential non-agency Prime (a) $ 405 $ – $ (4 ) $ – $ – $ (83 ) $ – $ – $ 318 $ (4 ) Non-prime (b) 280 (1 ) (1 ) – – (38 ) – – 240 (1 ) Asset-backed securities Other 62 4 (2 ) – (51 ) (11 ) – – 2 – Corporate debt securities 9 – – – – – – – 9 – Total available-for-sale 756 3 (i) (7 ) (f) – (51 ) (132 ) – – 569 (5 ) Mortgage servicing rights 2,338 (487 ) (d) – 29 – – 632 (g) – 2,512 (487 ) (d) Net derivative assets and liabilities 574 707 (j) – 1 (13 ) – – (771 ) 498 135 (k) 2014 Available-for-sale securities Mortgage-backed securities Residential non-agency Prime (a) $ 478 $ – $ 15 $ – $ – $ (88 ) $ – $ – $ 405 $ 14 Non-prime (b) 297 (6 ) 19 – – (30 ) – – 280 19 Asset-backed securities Other 63 4 – 5 – (10 ) – – 62 – Corporate debt securities 9 – – – – – – – 9 – Total available-for-sale 847 (2 ) (l) 34 (f) 5 – (128 ) – – 756 33 Mortgage servicing rights 2,680 (588 ) (d) – 5 (141 ) – 382 (g) – 2,338 (588 ) (d) Net derivative assets and liabilities 445 904 (m) – 1 (4 ) – – (772 ) 574 188 (n) (a) Prime securities are those designated as such by the issuer at origination. When an issuer designation is unavailable, the Company determines at acquisition date the categorization based on asset pool characteristics (such as weighted-average credit score, loan-to-value, loan type, prevalence of low documentation loans) and deal performance (such as pool delinquencies and security market spreads). (b) Includes all securities not meeting the conditions to be designated as prime. (c) Approximately $(3) million included in securities gains (losses) and $1 million included in interest income. (d) Included in mortgage banking revenue. (e) Approximately $(77) million included in other noninterest income and $409 million included in mortgage banking revenue. (f) Included in changes in unrealized gains and losses on securities available-for-sale. (g) Represents MSRs capitalized during the period. (h) Approximately $(276) million included in other noninterest income and $19 million included in mortgage banking revenue. (i) Included in interest income. (j) Approximately $289 million included in other noninterest income and $418 million included in mortgage banking revenue. (k) Approximately $92 million included in other noninterest income and $43 million included in mortgage banking revenue. (l) Approximately $(3) million included in securities gains (losses) and $1 million included in interest income. (m) Approximately $404 million included in other noninterest income and $500 million included in mortgage banking revenue. (n) Approximately $128 million included in other noninterest income and $60 million included in mortgage banking revenue.
Adjusted Carrying Values for Assets Measured at Fair Value on Nonrecurring Basis	The following table summarizes the balances as of the measurement date of assets measured at fair value on a nonrecurring basis, and still held as of the reporting date as of December 31: 2016 2015 (Dollars in Millions) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Loans (a) $ – $ – $ 59 $ 59 $ – $ – $ 87 $ 87 Other assets (b) – – 60 60 – – 66 66 (a) Represents the carrying value of loans for which adjustments were based on the fair value of the collateral, excluding loans fully charged-off. (b) Primarily represents the fair value of foreclosed properties that were measured at fair value based on an appraisal or broker price opinion of the collateral subsequent to their initial acquisition.
Losses Recognized Related to Nonrecurring Fair Value Measurements of Individual Assets or Portfolios	The following table summarizes losses recognized related to nonrecurring fair value measurements of individual assets or portfolios for the years ended December 31: (Dollars in Millions) 2016 2015 2014 Loans (a) $ 192 $ 175 $ 108 Other assets (b) 32 42 70 (a) Represents write-downs of student loans held for sale based on non-binding quoted prices received for the portfolio, that were subsequently transferred to loans, and write-downs of loans which were based on the fair value of the collateral, excluding loans fully charged-off. (b) Primarily represents related losses of foreclosed properties that were measured at fair value subsequent to their initial acquisition.
Differences Between Aggregate Fair Value Carrying Amount of MLHFS for which Fair Value Option has been Elected and Aggregate Unpaid Principal Amount Contractually Obligated to Receive at Maturity	The following table summarizes the differences between the aggregate fair value carrying amount of MLHFS for which the fair value option has been elected and the aggregate unpaid principal amount that the Company is contractually obligated to receive at maturity as of December 31: 2016 2015 (Dollars in Millions) Fair Value Aggregate Carrying Fair Value Aggregate Carrying Total loans $ 4,822 $ 4,763 $ 59 $ 3,110 $ 3,032 $ 78 Nonaccrual loans 2 3 (1 ) 5 7 (2 ) Loans 90 days or more past due 1 1 – – – –
Estimated Fair Values of Financial Instruments	The estimated fair values of the Company’s financial instruments as of December 31, are shown in the table below: 2016 2015 Carrying Amount Fair Value Carrying Amount Fair Value (Dollars in Millions) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial Assets Cash and due from banks $ 15,705 $ 15,705 $ – $ – $ 15,705 $ 11,147 $ 11,147 $ – $ – $ 11,147 Federal funds sold and securities purchased under resale agreements 138 – 138 – 138 169 – 169 – 169 Investment securities held-to-maturity 42,991 4,605 37,810 20 42,435 43,590 2,275 41,138 80 43,493 Loans held for sale (a) 4 – – 4 4 74 – – 74 74 Loans 269,394 – – 273,422 273,422 256,986 – – 259,823 259,823 Other financial instruments 2,362 – 920 1,449 2,369 2,311 – 921 1,398 2,319 Financial Liabilities Deposits 334,590 – 334,361 – 334,361 300,400 – 300,225 – 300,225 Short-term borrowings (b) 12,891 – 12,706 – 12,706 27,110 – 26,782 – 26,782 Long-term debt 33,323 – 33,678 – 33,678 32,078 – 32,412 – 32,412 Other liabilities 1,702 – – 1,702 1,702 1,353 – – 1,353 1,353 (a) Excludes mortgages held for sale for which the fair value option under applicable accounting guidance was elected. (b) Excludes the Company’s obligation on securities sold short required to be accounted for at fair value per applicable accounting guidance.

Guarantees and Contingent Lia52

Guarantees and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Contract or Notional Amounts of Unfunded Commitments to Extend Credit	The contract or notional amounts of unfunded commitments to extend credit at December 31, 2016, excluding those commitments considered derivatives, were as follows: Term (Dollars in Millions) Less Than Greater Than Total Commercial and commercial real estate loans $ 26,471 $ 98,452 $ 124,923 Corporate and purchasing card loans (a) 25,085 – 25,085 Residential mortgages 379 12 391 Retail credit card loans (a) 101,258 – 101,258 Other retail loans 13,254 22,552 35,806 Covered loans – 320 320 Other 5,558 18 5,576 (a) Primarily cancelable at the Company’s discretion.
Future Minimum Payments Under Capital Leases and Noncancelable Operating Leases	Future minimum payments, net of sublease rentals, under capitalized leases and noncancelable operating leases with initial or remaining terms of one year or more, consisted of the following at December 31, 2016: (Dollars in Millions) Capitalized Operating 2017 $ 17 $ 270 2018 16 243 2019 14 207 2020 13 166 2021 10 140 Thereafter 41 490 Total minimum lease payments 111 $ 1,516 Less amount representing interest 39 Present value of net minimum lease payments $ 72
Summary of Other Guarantees and Contingent Liabilities	The following table is a summary of other guarantees and contingent liabilities of the Company at December 31, 2016: (Dollars in Millions) Collateral Carrying Amount Maximum Standby letters of credit $ – $ 61 $ 11,917 Third party borrowing arrangements – – 8 Securities lending indemnifications 3,164 – 3,083 Asset sales – 138 6,211 Merchant processing 483 48 91,040 Tender option bond program guarantee 1,129 – 1,114 Minimum revenue guarantees – – 9 Other – – 1,287
Contract or Notional Amount of Letters of Credit	The contract or notional amount of letters of credit at December 31, 2016, were as follows: Term (Dollars in Millions) Less Than Greater Than Total Standby $ 5,552 $ 6,365 $ 11,917 Commercial 328 18 346

U.S. Bancorp (Parent Company) (

U.S. Bancorp (Parent Company) (Tables)	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Statement of Financial Position of Parent Company Only	Condensed Balance Sheet At December 31 (Dollars in Millions) 2016 2015 Assets Due from banks, principally interest-bearing $ 7,800 $ 9,426 Available-for-sale securities 225 352 Investments in bank subsidiaries 44,955 41,708 Investments in nonbank subsidiaries 2,326 2,060 Advances to bank subsidiaries 3,800 3,150 Advances to nonbank subsidiaries 1,265 823 Other assets 1,052 983 Total assets $ 61,423 $ 58,502 Liabilities and Shareholders’ Equity Short-term funds borrowed $ 22 $ 25 Long-term debt 13,045 11,453 Other liabilities 1,058 893 Shareholders’ equity 47,298 46,131 Total liabilities and shareholders’ equity $ 61,423 $ 58,502
Condensed Income Statement of Parent Company Only	Condensed Statement of Income Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Income Dividends from bank subsidiaries $ 2,100 $ 3,900 $ 3,850 Dividends from nonbank subsidiaries 4 3 38 Interest from subsidiaries 140 120 123 Other income 57 55 64 Total income 2,301 4,078 4,075 Expense Interest expense 327 292 335 Other expense 123 105 90 Total expense 450 397 425 Income before income taxes and equity in undistributed income of subsidiaries 1,851 3,681 3,650 Applicable income taxes (97 ) (207 ) (94 ) Income of parent company 1,948 3,888 3,744 Equity in undistributed income of subsidiaries 3,940 1,991 2,107 Net income attributable to U.S. Bancorp $ 5,888 $ 5,879 $ 5,851
Condensed Statement of Cash Flows of Parent Company Only	Condensed Statement of Cash Flows Year Ended December 31 (Dollars in Millions) 2016 2015 2014 Operating Activities Net income attributable to U.S. Bancorp $ 5,888 $ 5,879 $ 5,851 Adjustments to reconcile net income to net cash provided by operating activities Equity in undistributed income of subsidiaries (3,940 ) (1,991 ) (2,107 ) Other, net 75 507 48 Net cash provided by operating activities 2,023 4,395 3,792 Investing Activities Proceeds from sales and maturities of investment securities 232 153 46 Purchases of investment securities (120 ) (47 ) (39 ) Net (increase) decrease in short-term advances to subsidiaries (442 ) (273 ) 984 Long-term advances to subsidiaries (750 ) (500 ) (1,800 ) Principal collected on long-term advances to subsidiaries 100 – 1,400 Other, net (12 ) (6 ) (52 ) Net cash (used in) provided by investing activities (992 ) (673 ) 539 Financing Activities Net (decrease) increase in short-term borrowings (3 ) (152 ) 39 Proceeds from issuance of long-term debt 3,550 – 3,250 Principal payments or redemption of long-term debt (1,926 ) (1,750 ) (1,500 ) Proceeds from issuance of preferred stock – 745 – Proceeds from issuance of common stock 355 295 453 Repurchase of common stock (2,556 ) (2,190 ) (2,200 ) Cash dividends paid on preferred stock (267 ) (242 ) (243 ) Cash dividends paid on common stock (1,810 ) (1,777 ) (1,726 ) Net cash used in financing activities (2,657 ) (5,071 ) (1,927 ) Change in cash and due from banks (1,626 ) (1,349 ) 2,404 Cash and due from banks at beginning of year 9,426 10,775 8,371 Cash and due from banks at end of year $ 7,800 $ 9,426 $ 10,775

Loans and Allowance for Credi54

Loans and Allowance for Credit Losses - Commercial Loans by Industry Group and Geography Excluding Covered Loans (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Loans by Industry Group and Geography [Line Items]
Commercial	$ 93,386	$ 88,402
Commercial, percentage	100.00%	100.00%
California [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 12,677	$ 11,253
Commercial, percentage	13.60%	12.70%
Colorado [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 4,362	$ 3,930
Commercial, percentage	4.70%	4.50%
Illinois [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 4,636	$ 4,636
Commercial, percentage	5.00%	5.30%
Minnesota [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 7,093	$ 7,166
Commercial, percentage	7.60%	8.10%
Missouri [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,536	$ 3,309
Commercial, percentage	3.80%	3.80%
Ohio [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 4,270	$ 4,063
Commercial, percentage	4.60%	4.60%
Oregon [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 2,090	$ 1,938
Commercial, percentage	2.20%	2.20%
Washington [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,447	$ 3,219
Commercial, percentage	3.70%	3.60%
Wisconsin [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,512	$ 2,936
Commercial, percentage	3.80%	3.30%
Iowa, Kansas, Nebraska, North Dakota, South Dakota [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 4,900	$ 4,543
Commercial, percentage	5.20%	5.10%
Arkansas, Indiana, Kentucky, Tennessee [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 5,168	$ 5,106
Commercial, percentage	5.50%	5.80%
Idaho, Montana, Wyoming [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 1,251	$ 1,427
Commercial, percentage	1.30%	1.60%
Arizona, Nevada, New Mexico, Utah [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,487	$ 3,280
Commercial, percentage	3.70%	3.70%
Total Banking Region [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 60,429	$ 56,806
Commercial, percentage	64.70%	64.30%
Florida, Michigan, New York, Pennsylvania, Texas [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 15,467	$ 15,819
Commercial, percentage	16.60%	17.90%
All Other States [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 17,490	$ 15,777
Commercial, percentage	18.70%	17.80%
Total Outside Company's Banking Region [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 32,957	$ 31,596
Commercial, percentage	35.30%	35.70%
Manufacturing [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 13,779	$ 13,404
Commercial, percentage	14.80%	15.20%
Real Estate, Rental and Leasing [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 10,553	$ 9,514
Commercial, percentage	11.30%	10.80%
Finance and Insurance [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 8,728	$ 8,288
Commercial, percentage	9.30%	9.40%
Wholesale Trade [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 7,552	$ 8,069
Commercial, percentage	8.10%	9.10%
Retail Trade [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 7,573	$ 6,846
Commercial, percentage	8.10%	7.70%
Healthcare and Social Assistance [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 6,345	$ 5,802
Commercial, percentage	6.80%	6.60%
Public Administration [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 4,546	$ 4,190
Commercial, percentage	4.90%	4.70%
Information [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,597	$ 3,542
Commercial, percentage	3.80%	4.00%
Professional, Scientific and Technical Services [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,744	$ 3,493
Commercial, percentage	4.00%	4.00%
Transport and Storage [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,561	$ 3,262
Commercial, percentage	3.80%	3.70%
Educational Services [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,167	$ 2,791
Commercial, percentage	3.40%	3.20%
Arts, Entertainment and Recreation [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 3,340	$ 2,772
Commercial, percentage	3.60%	3.10%
Mining [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 1,645	$ 2,208
Commercial, percentage	1.80%	2.50%
Agriculture, Forestry, Fishing and Hunting [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 1,449	$ 1,721
Commercial, percentage	1.50%	1.90%
Other Services [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 1,625	$ 1,703
Commercial, percentage	1.70%	1.90%
Utilities [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 1,747	$ 1,435
Commercial, percentage	1.90%	1.60%
Other [Member]
Loans by Industry Group and Geography [Line Items]
Commercial	$ 10,435	$ 9,362
Commercial, percentage	11.20%	10.60%

Loans and Allowance for Credi55

Loans and Allowance for Credit Losses - Commercial Real Estate Loans by Property Type and Geography Excluding Covered Loans (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 43,098	$ 42,137
Commercial real estate, percentage	100.00%	100.00%
California [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 10,734	$ 10,456
Commercial real estate, percentage	24.90%	24.80%
Colorado [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 1,819	$ 2,004
Commercial real estate, percentage	4.20%	4.80%
Illinois [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 1,678	$ 1,810
Commercial real estate, percentage	3.90%	4.30%
Minnesota [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 2,177	$ 2,022
Commercial real estate, percentage	5.00%	4.80%
Missouri [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 1,372	$ 1,382
Commercial real estate, percentage	3.20%	3.30%
Ohio [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 1,462	$ 1,260
Commercial real estate, percentage	3.40%	3.00%
Oregon [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 2,094	$ 1,988
Commercial real estate, percentage	4.90%	4.70%
Washington [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 3,435	$ 3,422
Commercial real estate, percentage	8.00%	8.10%
Wisconsin [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 2,161	$ 2,323
Commercial real estate, percentage	5.00%	5.50%
Iowa, Kansas, Nebraska, North Dakota, South Dakota [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 2,312	$ 2,227
Commercial real estate, percentage	5.40%	5.30%
Arkansas, Indiana, Kentucky, Tennessee [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 1,810	$ 1,708
Commercial real estate, percentage	4.20%	4.10%
Idaho, Montana, Wyoming [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 1,271	$ 1,275
Commercial real estate, percentage	2.90%	3.00%
Arizona, Nevada, New Mexico, Utah [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 3,257	$ 3,259
Commercial real estate, percentage	7.60%	7.70%
Total Banking Region [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 35,582	$ 35,136
Commercial real estate, percentage	82.60%	83.40%
Florida, Michigan, New York, Pennsylvania, Texas [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 3,829	$ 3,793
Commercial real estate, percentage	8.90%	9.00%
All Other States [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 3,687	$ 3,208
Commercial real estate, percentage	8.50%	7.60%
Total Outside Company's Banking Region [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 7,516	$ 7,001
Commercial real estate, percentage	17.40%	16.60%
Business Owner Occupied [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 10,899	$ 11,186
Commercial real estate, percentage	25.30%	26.60%
Industrial Commercial Property [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 1,631	$ 1,530
Commercial real estate, percentage	3.80%	3.60%
Office Commercial Property [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 5,536	$ 5,480
Commercial real estate, percentage	12.80%	13.00%
Retail Commercial Property [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 4,997	$ 4,944
Commercial real estate, percentage	11.60%	11.70%
Other Commercial Property [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 4,064	$ 4,165
Commercial real estate, percentage	9.40%	9.90%
Multi-Family [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 9,607	$ 8,833
Commercial real estate, percentage	22.30%	21.00%
Hotel/Motel [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 3,791	$ 3,428
Commercial real estate, percentage	8.80%	8.10%
Residential Homebuilders [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 2,311	$ 2,319
Commercial real estate, percentage	5.40%	5.50%
Healthcare Facilities [Member]
Loans by Property Type and Geography [Line Items]
Commercial real estate	$ 262	$ 252
Commercial real estate, percentage	0.60%	0.60%

Investment Securities - Investm

Investment Securities - Investment Securities (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Contractual Maturities of Investment Securities [Line Items]
Available-for-sale securities, total, amortized cost		$ 66,985	$ 61,817
Available-for-sale securities, total, fair value	[1]	$ 66,284	$ 61,997
Available-for-sale securities, total, weighted-average maturity in years		5 years 1 month 6 days	4 years 8 months 12 days
Available-for-sale securities, total, weighted-average yield		2.06%	2.21%
Held-to-maturity securities, total, amortized cost		$ 42,991	$ 43,590
Held-to-maturity securities, total, fair value		$ 42,435	$ 43,493
Held-to-maturity securities, total, weighted-average maturity in years		4 years 7 months 6 days	4 years 2 months 12 days
Held-to-maturity securities, total, weighted-average yield		1.93%	1.92%
Amortized Cost of Investment Securities		$ 109,976	$ 105,407
Amortized Cost of Investment Securities, Percentage		100.00%	100.00%
U.S. Treasury and Agencies [Member]
Contractual Maturities of Investment Securities [Line Items]
Available-for-sale securities, maturing in one year or less, amortized cost		$ 3,219
Available-for-sale securities, maturing after one year through five years, amortized cost		9,509
Available-for-sale securities, maturing after five years through ten years, amortized cost		4,285
Available-for-sale securities, maturing after ten years, amortized cost		301
Available-for-sale securities, total, amortized cost		17,314	$ 4,611
Available-for-sale securities, maturing in one year or less, fair value		3,218
Available-for-sale securities, maturing after one year through five years, fair value		9,414
Available-for-sale securities, maturing after five years through ten years, fair value		4,203
Available-for-sale securities, maturing after ten years, fair value		292
Available-for-sale securities, total, fair value		$ 17,127	4,596
Available-for-sale securities, maturing in one year or less, weighted-average maturity in years		7 months 6 days
Available-for-sale securities, maturing after one year through five years, weighted-average maturity in years		2 years 8 months 12 days
Available-for-sale securities, maturing after five years through ten years, weighted-average maturity in years		6 years 2 months 12 days
Available-for-sale securities, maturing after ten years, weighted- average maturity in years		10 years 2 months 12 days
Available-for-sale securities, total, weighted-average maturity in years		3 years 3 months 18 days
Available-for-sale securities, maturing in one year or less, weighted-average yield		0.74%
Available-for-sale securities, maturing after one year through five years, weighted-average yield		1.10%
Available-for-sale securities, maturing after five years through ten years, weighted-average yield		1.91%
Available-for-sale securities, maturing after ten years, weighted-average yield		2.26%
Available-for-sale securities, total, weighted-average yield		1.25%
Held-to-maturity securities, maturing in one year or less, amortized cost		$ 450
Held-to-maturity securities, maturing after one year through five years, amortized cost		709
Held-to-maturity securities, maturing after five years through ten years, amortized cost		4,087
Held-to-maturity securities, total, amortized cost		5,246	2,925
Held-to-maturity securities, maturing in one year or less, fair value		450
Held-to-maturity securities, maturing after one year through five years, fair value		715
Held-to-maturity securities, maturing after five years through ten years, fair value		3,961
Held-to-maturity securities, total, fair value		$ 5,126	2,919
Held-to-maturity securities, maturing in one year or less, weighted-average maturity in years		6 months
Held-to-maturity securities, maturing after one year through five years, weighted-average maturity in years		2 years 8 months 12 days
Held-to-maturity securities, maturing after five years through ten years, weighted-average maturity in years		6 years 8 months 12 days
Held-to-maturity securities, total, weighted-average maturity in years		5 years 7 months 6 days
Held-to-maturity securities, maturing in one year or less, weighted-average yield		0.98%
Held-to-maturity securities, maturing after one year through five years, weighted-average yield		1.78%
Held-to-maturity securities, maturing after five years through ten years, weighted-average yield		1.77%
Held-to-maturity securities, total, weighted-average yield		1.71%
Amortized Cost of Investment Securities		$ 22,560	$ 7,536
Amortized Cost of Investment Securities, Percentage		20.50%	7.20%
Mortgage-Backed Securities [Member]
Contractual Maturities of Investment Securities [Line Items]
Available-for-sale securities, maturing in one year or less, amortized cost		$ 161
Available-for-sale securities, maturing after one year through five years, amortized cost		19,304
Available-for-sale securities, maturing after five years through ten years, amortized cost		22,222
Available-for-sale securities, maturing after ten years, amortized cost		2,304
Available-for-sale securities, total, amortized cost		43,991
Available-for-sale securities, maturing in one year or less, fair value		165
Available-for-sale securities, maturing after one year through five years, fair value		19,279
Available-for-sale securities, maturing after five years through ten years, fair value		21,834
Available-for-sale securities, maturing after ten years, fair value		2,312
Available-for-sale securities, total, fair value		$ 43,590
Available-for-sale securities, maturing in one year or less, weighted-average maturity in years		8 months 12 days
Available-for-sale securities, maturing after one year through five years, weighted-average maturity in years		4 years 2 months 12 days
Available-for-sale securities, maturing after five years through ten years, weighted-average maturity in years		5 years 9 months 18 days
Available-for-sale securities, maturing after ten years, weighted- average maturity in years		12 years 2 months 12 days
Available-for-sale securities, total, weighted-average maturity in years		5 years 4 months 24 days
Available-for-sale securities, maturing in one year or less, weighted-average yield		4.15%
Available-for-sale securities, maturing after one year through five years, weighted-average yield		2.06%
Available-for-sale securities, maturing after five years through ten years, weighted-average yield		1.79%
Available-for-sale securities, maturing after ten years, weighted-average yield		1.70%
Available-for-sale securities, total, weighted-average yield		1.91%
Held-to-maturity securities, maturing in one year or less, amortized cost		$ 271
Held-to-maturity securities, maturing after one year through five years, amortized cost		25,882
Held-to-maturity securities, maturing after five years through ten years, amortized cost		11,317
Held-to-maturity securities, maturing after ten years, amortized cost		237
Held-to-maturity securities, total, amortized cost		37,707
Held-to-maturity securities, maturing in one year or less, fair value		273
Held-to-maturity securities, maturing after one year through five years, fair value		25,680
Held-to-maturity securities, maturing after five years through ten years, fair value		11,071
Held-to-maturity securities, maturing after ten years, fair value		239
Held-to-maturity securities, total, fair value		$ 37,263
Held-to-maturity securities, maturing in one year or less, weighted-average maturity in years		8 months 12 days
Held-to-maturity securities, maturing after one year through five years, weighted-average maturity in years		3 years 9 months 18 days
Held-to-maturity securities, maturing after five years through ten years, weighted-average maturity in years		5 years 8 months 12 days
Held-to-maturity securities, maturing after ten years, weighted-average maturity in years		11 years 1 month 6 days
Held-to-maturity securities, total, weighted-average maturity in years		4 years 4 months 24 days
Held-to-maturity securities, maturing in one year or less, weighted-average yield		2.83%
Held-to-maturity securities, maturing after one year through five years, weighted-average yield		1.99%
Held-to-maturity securities, maturing after five years through ten years, weighted-average yield		1.86%
Held-to-maturity securities, maturing after ten years, weighted-average yield		1.62%
Held-to-maturity securities, total, weighted-average yield		1.96%
Amortized Cost of Investment Securities		$ 81,698	$ 91,265
Amortized Cost of Investment Securities, Percentage		74.30%	86.60%
Asset-Backed Securities [Member]
Contractual Maturities of Investment Securities [Line Items]
Available-for-sale securities, maturing after one year through five years, amortized cost		$ 252
Available-for-sale securities, maturing after five years through ten years, amortized cost		223
Available-for-sale securities, total, amortized cost		475
Available-for-sale securities, maturing after one year through five years, fair value		256
Available-for-sale securities, maturing after five years through ten years, fair value		227
Available-for-sale securities, total, fair value		$ 483
Available-for-sale securities, maturing after one year through five years, weighted-average maturity in years		3 years 10 months 24 days
Available-for-sale securities, maturing after five years through ten years, weighted-average maturity in years		5 years 4 months 24 days
Available-for-sale securities, total, weighted-average maturity in years		4 years 7 months 6 days
Available-for-sale securities, maturing after one year through five years, weighted-average yield		3.18%
Available-for-sale securities, maturing after five years through ten years, weighted-average yield		3.49%
Available-for-sale securities, total, weighted-average yield		3.32%
Held-to-maturity securities, maturing after one year through five years, amortized cost		$ 5
Held-to-maturity securities, maturing after five years through ten years, amortized cost		2
Held-to-maturity securities, maturing after ten years, amortized cost		1
Held-to-maturity securities, total, amortized cost		8
Held-to-maturity securities, maturing after one year through five years, fair value		8
Held-to-maturity securities, maturing after five years through ten years, fair value		2
Held-to-maturity securities, maturing after ten years, fair value		6
Held-to-maturity securities, total, fair value		$ 16
Held-to-maturity securities, maturing in one year or less, weighted-average maturity in years		1 month 6 days
Held-to-maturity securities, maturing after one year through five years, weighted-average maturity in years		3 years 1 month 6 days
Held-to-maturity securities, maturing after five years through ten years, weighted-average maturity in years		5 years 9 months 18 days
Held-to-maturity securities, maturing after ten years, weighted-average maturity in years		11 years 6 months
Held-to-maturity securities, total, weighted-average maturity in years		5 years
Held-to-maturity securities, maturing in one year or less, weighted-average yield		1.38%
Held-to-maturity securities, maturing after one year through five years, weighted-average yield		1.39%
Held-to-maturity securities, maturing after five years through ten years, weighted-average yield		1.53%
Held-to-maturity securities, maturing after ten years, weighted-average yield		1.52%
Held-to-maturity securities, total, weighted-average yield		1.45%
Amortized Cost of Investment Securities		$ 483	$ 558
Amortized Cost of Investment Securities, Percentage		0.40%	0.50%
Obligations of State and Political Subdivisions [Member]
Contractual Maturities of Investment Securities [Line Items]
Available-for-sale securities, maturing in one year or less, amortized cost		$ 1,573
Available-for-sale securities, maturing after one year through five years, amortized cost		517
Available-for-sale securities, maturing after five years through ten years, amortized cost		1,771
Available-for-sale securities, maturing after ten years, amortized cost		1,306
Available-for-sale securities, total, amortized cost		5,167	$ 5,149
Available-for-sale securities, maturing in one year or less, fair value		1,593
Available-for-sale securities, maturing after one year through five years, fair value		530
Available-for-sale securities, maturing after five years through ten years, fair value		1,732
Available-for-sale securities, maturing after ten years, fair value		1,184
Available-for-sale securities, total, fair value		$ 5,039	5,316
Available-for-sale securities, maturing in one year or less, weighted-average maturity in years		4 months 24 days
Available-for-sale securities, maturing after one year through five years, weighted-average maturity in years		2 years 7 months 6 days
Available-for-sale securities, maturing after five years through ten years, weighted-average maturity in years		8 years 1 month 6 days
Available-for-sale securities, maturing after ten years, weighted- average maturity in years		20 years
Available-for-sale securities, total, weighted-average maturity in years		8 years 2 months 12 days
Available-for-sale securities, maturing in one year or less, weighted-average yield		7.09%
Available-for-sale securities, maturing after one year through five years, weighted-average yield		6.15%
Available-for-sale securities, maturing after five years through ten years, weighted-average yield		5.30%
Available-for-sale securities, maturing after ten years, weighted-average yield		5.05%
Available-for-sale securities, total, weighted-average yield		5.87%
Held-to-maturity securities, maturing after five years through ten years, amortized cost		$ 6
Held-to-maturity securities, total, amortized cost		6	8
Held-to-maturity securities, maturing after five years through ten years, fair value		7
Held-to-maturity securities, total, fair value		$ 7	8
Held-to-maturity securities, maturing in one year or less, weighted-average maturity in years		3 months 18 days
Held-to-maturity securities, maturing after one year through five years, weighted-average maturity in years		2 years 6 months
Held-to-maturity securities, maturing after five years through ten years, weighted-average maturity in years		8 years 9 months 18 days
Held-to-maturity securities, total, weighted-average maturity in years		8 years 4 months 24 days
Held-to-maturity securities, maturing in one year or less, weighted-average yield		8.20%
Held-to-maturity securities, maturing after one year through five years, weighted-average yield		8.15%
Held-to-maturity securities, maturing after five years through ten years, weighted-average yield		3.30%
Held-to-maturity securities, total, weighted-average yield		3.59%
Amortized Cost of Investment Securities		$ 5,173	$ 5,157
Amortized Cost of Investment Securities, Percentage		4.70%	4.90%
Other Debt Securities and Obligations of Foreign Governments [Member]
Contractual Maturities of Investment Securities [Line Items]
Available-for-sale securities, maturing after ten years, amortized cost		$ 11
Available-for-sale securities, total, amortized cost		11
Available-for-sale securities, maturing after ten years, fair value		9
Available-for-sale securities, total, fair value		$ 9
Available-for-sale securities, maturing after ten years, weighted- average maturity in years		20 years 4 months 24 days
Available-for-sale securities, total, weighted-average maturity in years		20 years 4 months 24 days
Available-for-sale securities, maturing after ten years, weighted-average yield		5.65%
Available-for-sale securities, total, weighted-average yield		5.65%
Held-to-maturity securities, maturing in one year or less, amortized cost		$ 8
Held-to-maturity securities, maturing after one year through five years, amortized cost		16
Held-to-maturity securities, total, amortized cost		24
Held-to-maturity securities, maturing in one year or less, fair value		8
Held-to-maturity securities, maturing after one year through five years, fair value		15
Held-to-maturity securities, total, fair value		$ 23
Held-to-maturity securities, maturing in one year or less, weighted-average maturity in years		3 months 18 days
Held-to-maturity securities, maturing after one year through five years, weighted-average maturity in years		3 years 9 months 18 days
Held-to-maturity securities, total, weighted-average maturity in years		2 years 7 months 6 days
Held-to-maturity securities, maturing in one year or less, weighted-average yield		2.15%
Held-to-maturity securities, maturing after one year through five years, weighted-average yield		1.65%
Held-to-maturity securities, total, weighted-average yield		1.82%
Amortized Cost of Investment Securities		$ 62	$ 891
Amortized Cost of Investment Securities, Percentage		0.10%	0.80%
Other Investments Including Perpetual Preferred Securities [Member]
Contractual Maturities of Investment Securities [Line Items]
Available-for-sale securities, total, amortized cost		$ 27
Available-for-sale securities, total, fair value		$ 36
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Investment Securities - Inves57

Investment Securities - Investment Securities (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Contractual Maturities of Investment Securities [Abstract]
Federal statutory rate	35.00%
Weighted-average maturity of available-for-sale investment securities	5 years 1 month 6 days	4 years 8 months 12 days
Weighted-average yield of available-for-sale investment securities	2.06%	2.21%
Weighted-average maturity of held-to-maturity investment securities	4 years 7 months 6 days	4 years 2 months 12 days
Weighted-average yield of held-to-maturity investment securities	1.93%	1.92%

Loans and Allowance for Credi58

Loans and Allowance for Credit Losses - Summary of Nonperforming Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Nonperforming Assets [Line Items]
Nonperforming Loans	$ 1,368	$ 1,192	$ 1,466	$ 1,603	$ 2,079
Other Real Estate	186	280	288	327	381
Covered Other Real Estate	26	32	37	97	197
Other Assets	23	19	17	10	14
Total nonperforming assets	1,603	1,523	1,808	2,037	2,671
Total nonperforming assets, excluding covered assets	1,571	1,483	1,757	1,813	2,088
Accruing loans 90 days or more past due	$ 552	$ 541	$ 550	$ 713	$ 660
Nonperforming loans to total loans	0.51%	0.46%	0.60%	0.65%	0.80%
Nonperforming assets to total loans plus other real estate	0.58%	0.58%	0.72%	0.80%	0.98%
Accruing loans 90 days or more past due	$ 764	$ 831	$ 945	$ 1,189	$ 1,323
Nonperforming loans to total loans	0.50%	0.46%	0.59%	0.68%	0.93%
Nonperforming assets to total loans plus other real estate	0.59%	0.58%	0.73%	0.86%	1.19%
Lease Financing [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	$ 40	$ 14	$ 13	$ 12	$ 16
Commercial Mortgages [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	87	92	175	182	308
Construction and Development [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	37	35	84	121	238
Credit Card [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	3	9	30	78	146
Accruing loans 90 days or more past due	253	228
Retail Leasing [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	2	3	1	1	1
Home Equity and Second Mortgages [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	128	136	170	167	189
Total Loans, Excluding Covered Loans [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	1,362	1,184	1,452	1,476	1,693
Accruing loans 90 days or more past due	552	541
Covered Loans [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	6	8	14	127	386
Accruing loans 90 days or more past due	212	290
Commercial [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	443	160	99	122	107
Commercial [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	483	174	112	134	123
Accruing loans 90 days or more past due	52	48
Commercial Real Estate [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	124	127	259	303	546
Accruing loans 90 days or more past due	8	14
Residential Mortgages [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	595	712	864	770	661
Accruing loans 90 days or more past due	156	176
Other [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	27	23	16	23	27
Other Retail [Member]
Nonperforming Assets [Line Items]
Nonperforming Loans	157	162	$ 187	$ 191	$ 217
Accruing loans 90 days or more past due	$ 83	$ 75

Loans and Allowance for Credi59

Loans and Allowance for Credit Losses - Summary of Change in Nonperforming Assets (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Nonperforming Assets [Line Items]
Balance December 31, 2015	$ 1,523
Additions to nonperforming assets
New nonaccrual loans and foreclosed properties	1,504
Advances on loans	59
Total additions	1,563
Reductions in nonperforming assets
Paydowns, payoffs	(532)
Net sales	(427)
Return to performing status	(149)
Charge-offs	(375)
Total reductions	(1,483)
Net additions to (reductions in) nonperforming assets	80
Balance December 31, 2016	1,603
Commercial and Commercial Real Estate Loans [Member]
Nonperforming Assets [Line Items]
Balance December 31, 2015	336
Additions to nonperforming assets
New nonaccrual loans and foreclosed properties	1,051
Advances on loans	59
Total additions	1,110
Reductions in nonperforming assets
Paydowns, payoffs	(273)
Net sales	(218)
Return to performing status	(29)
Charge-offs	(303)
Total reductions	(823)
Net additions to (reductions in) nonperforming assets	287
Balance December 31, 2016	623
Residential Mortgages, Credit Card and Other Retail [Member]
Nonperforming Assets [Line Items]
Balance December 31, 2015	1,147
Additions to nonperforming assets
New nonaccrual loans and foreclosed properties	431
Total additions	431
Reductions in nonperforming assets
Paydowns, payoffs	(256)
Net sales	(184)
Return to performing status	(119)
Charge-offs	(71)
Total reductions	(630)
Net additions to (reductions in) nonperforming assets	(199)
Balance December 31, 2016	948
Covered Assets [Member]
Nonperforming Assets [Line Items]
Balance December 31, 2015	40
Additions to nonperforming assets
New nonaccrual loans and foreclosed properties	22
Total additions	22
Reductions in nonperforming assets
Paydowns, payoffs	(3)
Net sales	(25)
Return to performing status	(1)
Charge-offs	(1)
Total reductions	(30)
Net additions to (reductions in) nonperforming assets	(8)
Balance December 31, 2016	$ 32

Loans and Allowance for Credi60

Loans and Allowance for Credit Losses - Summary of Change in Nonperforming Assets (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Receivables [Abstract]
Period of accruing loans excluded from nonperforming assets and related ratios	90 days	90 days	90 days	90 days	90 days
GNMA loans that are 90 days past due and continue to accrue interest	$ 2,500	$ 2,900	$ 3,100	$ 3,700	$ 3,200
Foreclosed GNMA loans that continue to accrue interest and excluded from nonperforming assets	$ 373	$ 535	$ 641	$ 527	$ 548

Shareholders' Equity - Regulato

Shareholders' Equity - Regulatory Capital Ratios (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital as a percent of risk-weighted assets - Minimum capital ratio requirement	5.125%	4.50%
Tier 1 capital as a percent of risk-weighted assets - Minimum capital ratio requirement	6.625%	6.00%
Total risk-based capital as a percent of risk-weighted assets - Minimum capital ratio requirement	8.625%	8.00%
Tier 1 capital as a percent of adjusted quarterly average assets (leverage ratio) - Minimum capital ratio requirement	4.00%	4.00%
Common equity tier 1 capital as a percent of risk-weighted assets - Well capitalized ratio requirement	6.50%	6.50%
Tier 1 capital as a percent of risk-weighted assets - Well capitalized ratio requirement	8.00%	8.00%
Total risk-based capital as a percent of risk-weighted assets - Well capitalized ratio requirement	10.00%	10.00%
Tier 1 capital as a percent of adjusted quarterly average assets (leverage ratio) - Well capitalized ratio requirement	5.00%	5.00%
Basel III Transitional Standardized Approach: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital	$ 39,421	$ 38,431
Total risk-based capital	47,355	45,313
Risk-weighted assets	358,237	341,360
Basel III transitional advanced approaches: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital	33,720	32,612
Tier 1 capital	39,421	38,431
Total risk-based capital	44,264	42,262
Risk-weighted assets	277,141	261,668
U.S. Bancorp [Member] | Basel III Transitional Standardized Approach: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital	33,720	32,612
Tier 1 capital	39,421	38,431
Total risk-based capital	47,355	45,313
Risk-weighted assets	$ 358,237	$ 341,360
Common equity tier 1 capital as a percent of risk-weighted assets	9.40%	9.60%
Tier 1 capital as a percent of risk-weighted assets	11.00%	11.30%
Total risk-based capital as a percent of risk-weighted assets	13.20%	13.30%
Tier 1 capital as a percent of adjusted quarterly average assets (leverage ratio)	9.00%	9.50%
U.S. Bancorp [Member] | Basel III transitional advanced approaches: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital	$ 33,720	$ 32,612
Tier 1 capital	39,421	38,431
Total risk-based capital	44,264	42,262
Risk-weighted assets	$ 277,141	$ 261,668
Common equity tier 1 capital as a percent of risk-weighted assets	12.20%	12.50%
Tier 1 capital as a percent of risk-weighted assets	14.20%	14.70%
Total risk-based capital as a percent of risk-weighted assets	16.00%	16.20%
U.S. Bank National Association [Member] | Basel III Transitional Standardized Approach: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital	$ 36,914	$ 33,831
Tier 1 capital	37,114	34,148
Total risk-based capital	44,853	41,112
Risk-weighted assets	$ 352,023	$ 336,938
Common equity tier 1 capital as a percent of risk-weighted assets	10.50%	10.00%
Tier 1 capital as a percent of risk-weighted assets	10.50%	10.10%
Total risk-based capital as a percent of risk-weighted assets	12.70%	12.20%
Tier 1 capital as a percent of adjusted quarterly average assets (leverage ratio)	8.60%	8.50%
U.S. Bank National Association [Member] | Basel III transitional advanced approaches: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital	$ 36,914	$ 33,831
Tier 1 capital	37,114	34,148
Total risk-based capital	41,737	38,090
Risk-weighted assets	$ 271,920	$ 258,207
Common equity tier 1 capital as a percent of risk-weighted assets	13.60%	13.10%
Tier 1 capital as a percent of risk-weighted assets	13.60%	13.20%
Total risk-based capital as a percent of risk-weighted assets	15.30%	14.80%

Significant Accounting Polici62

Significant Accounting Policies - Line of Business Financial Performance (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 11,731	$ 11,214
Net interest income (taxable-equivalent basis), Percent change	4.60%
Noninterest income	$ 9,555	9,092
Noninterest income, Percent change	5.10%
Securities gains (losses), net	$ 22		$ 3
Securities gains (losses), net, Percent change	0.00%
Total net revenue	$ 21,308	20,306
Total net revenue, Percent change	4.90%
Noninterest expense, Percent change	6.90%
Other intangibles, Percent change	2.90%
Total noninterest expense, Percent change	6.80%
Income before provision and income taxes, Percent change	2.70%
Provision for credit losses, Percent change	17.00%
Income before income taxes, Percent change	0.80%
Income taxes and taxable-equivalent adjustment, Percent change	2.30%
Net income, Percent change	0.20%
Net (income) loss attributable to noncontrolling interests, Percent change	(3.70%)
Net income attributable to U.S. Bancorp, Percent change	0.20%
Noninterest expense	$ 11,497	10,757
Other intangibles	179	174	199
Total noninterest expense	11,676	10,931	10,715
Income before provision and income taxes	9,632	9,375
Provision for credit losses	1,324	1,132	1,229
Income before income taxes	8,308	8,243
Income taxes and taxable-equivalent adjustment	2,364	2,310
Net income	5,944	5,933	5,908
Net (income) loss attributable to noncontrolling interests	(56)	(54)	(57)
Net income attributable to U.S. Bancorp	5,888	5,879	$ 5,851
Average Balance Sheet
Commercial	$ 92,043	84,083
Commercial, Percent change	9.50%
Commercial real estate	$ 43,040	42,415
Commercial real estate, Percent change	1.50%
Residential mortgages	$ 55,682	51,840
Residential mortgages, Percent change	7.40%
Credit card	$ 20,490	18,057
Credit card, Percent change	13.50%
Other retail	$ 52,330	49,079
Other retail, Percent change	6.60%
Total loans, excluding covered loans	$ 263,585	245,474
Total loans, excluding covered loans, Percent change	7.40%
Covered loans	$ 4,226	4,985
Covered loans, Percent change	(15.20%)
Total loans	$ 267,811	250,459
Total loans, Percent change	6.90%
Goodwill, Percent change	(0.10%)
Other intangible assets, Percent change	(3.70%)
Assets, Percent change	6.00%
Noninterest-bearing deposits, Percent change	2.50%
Interest checking, Percent change	10.30%
Savings products, Percent change	17.60%
Time deposits, Percent change	(7.20%)
Total deposits, Percent change	8.90%
Total U.S. Bancorp shareholders' equity, Percent change	5.60%
Goodwill	$ 9,359	9,370
Other intangible assets	3,033	3,151
Assets	433,313	408,865
Noninterest-bearing deposits	81,176	79,203
Interest checking	61,726	55,974
Savings products	136,900	116,416
Time deposits	33,008	35,558
Total deposits	312,810	287,151
Total U.S. Bancorp shareholders' equity	47,339	44,813
Wholesale Banking and Commercial Real Estate [Member]
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 2,240	2,002
Net interest income (taxable-equivalent basis), Percent change	11.90%
Noninterest income	$ 897	892
Noninterest income, Percent change	0.60%
Securities gains (losses), net	$ 2
Securities gains (losses), net, Percent change	0.00%
Total net revenue	$ 3,139	2,894
Total net revenue, Percent change	8.50%
Noninterest expense, Percent change	7.20%
Total noninterest expense, Percent change	7.20%
Income before provision and income taxes, Percent change	9.60%
Provision for credit losses, Percent change	70.60%
Income before income taxes, Percent change	(0.10%)
Income taxes and taxable-equivalent adjustment, Percent change	(0.20%)
Noninterest expense	$ 1,417	1,322
Other intangibles	4	4
Total noninterest expense	1,421	1,326
Income before provision and income taxes	1,718	1,568
Provision for credit losses	365	214
Income before income taxes	1,353	1,354
Income taxes and taxable-equivalent adjustment	492	493
Net income	861	861
Net income attributable to U.S. Bancorp	861	861
Average Balance Sheet
Commercial	$ 70,854	64,569
Commercial, Percent change	9.70%
Commercial real estate	$ 21,193	20,506
Commercial real estate, Percent change	3.40%
Residential mortgages	$ 8	8
Other retail	2	2
Total loans, excluding covered loans	$ 92,057	85,085
Total loans, excluding covered loans, Percent change	8.20%
Total loans	$ 92,057	85,085
Total loans, Percent change	8.20%
Other intangible assets, Percent change	(15.00%)
Assets, Percent change	7.70%
Noninterest-bearing deposits, Percent change	1.40%
Interest checking, Percent change	15.70%
Savings products, Percent change	50.50%
Time deposits, Percent change	(13.00%)
Total deposits, Percent change	16.00%
Total U.S. Bancorp shareholders' equity, Percent change	8.30%
Goodwill	$ 1,647	1,647
Other intangible assets	17	20
Assets	100,575	93,421
Noninterest-bearing deposits	36,849	36,345
Interest checking	8,615	7,445
Savings products	42,284	28,095
Time deposits	13,078	15,027
Total deposits	100,826	86,912
Total U.S. Bancorp shareholders' equity	8,996	8,309
Consumer and Small Business Banking [Member]
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 4,752	4,580
Net interest income (taxable-equivalent basis), Percent change	3.80%
Noninterest income	$ 2,527	2,485
Noninterest income, Percent change	1.70%
Securities gains (losses), net, Percent change	0.00%
Total net revenue	$ 7,279	7,065
Total net revenue, Percent change	3.00%
Noninterest expense, Percent change	4.20%
Other intangibles, Percent change	(20.00%)
Total noninterest expense, Percent change	4.00%
Income before provision and income taxes, Percent change	1.00%
Provision for credit losses, Percent change	(37.20%)
Income before income taxes, Percent change	3.70%
Income taxes and taxable-equivalent adjustment, Percent change	4.00%
Net income, Percent change	3.60%
Net income attributable to U.S. Bancorp, Percent change	3.60%
Noninterest expense	$ 4,999	4,799
Other intangibles	32	40
Total noninterest expense	5,031	4,839
Income before provision and income taxes	2,248	2,226
Provision for credit losses	93	148
Income before income taxes	2,155	2,078
Income taxes and taxable-equivalent adjustment	785	755
Net income	1,370	1,323
Net income attributable to U.S. Bancorp	1,370	1,323
Average Balance Sheet
Commercial	$ 10,352	9,848
Commercial, Percent change	5.10%
Commercial real estate	$ 18,224	17,917
Commercial real estate, Percent change	1.70%
Residential mortgages	$ 53,402	50,007
Residential mortgages, Percent change	6.80%
Other retail	$ 50,251	46,964
Other retail, Percent change	7.00%
Total loans, excluding covered loans	$ 132,229	124,736
Total loans, excluding covered loans, Percent change	6.00%
Covered loans	$ 4,196	4,934
Covered loans, Percent change	(15.00%)
Total loans	$ 136,425	129,670
Total loans, Percent change	5.20%
Other intangible assets, Percent change	(6.70%)
Assets, Percent change	3.50%
Noninterest-bearing deposits, Percent change	6.60%
Interest checking, Percent change	9.20%
Savings products, Percent change	6.90%
Time deposits, Percent change	(9.80%)
Total deposits, Percent change	5.60%
Total U.S. Bancorp shareholders' equity, Percent change	2.80%
Goodwill	$ 3,681	3,681
Other intangible assets	2,421	2,594
Assets	151,754	146,554
Noninterest-bearing deposits	27,544	25,829
Interest checking	43,587	39,930
Savings products	57,465	53,753
Time deposits	14,273	15,828
Total deposits	142,869	135,340
Total U.S. Bancorp shareholders' equity	11,192	10,892
Wealth Management and Securities Services [Member]
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 537	355
Net interest income (taxable-equivalent basis), Percent change	51.30%
Noninterest income	$ 1,589	1,475
Noninterest income, Percent change	7.70%
Securities gains (losses), net, Percent change	0.00%
Total net revenue	$ 2,126	1,830
Total net revenue, Percent change	16.20%
Noninterest expense, Percent change	6.20%
Other intangibles, Percent change	(14.30%)
Total noninterest expense, Percent change	5.80%
Income before provision and income taxes, Percent change	55.80%
Income before income taxes, Percent change	56.80%
Income taxes and taxable-equivalent adjustment, Percent change	57.20%
Net income, Percent change	56.60%
Net income attributable to U.S. Bancorp, Percent change	56.60%
Noninterest expense	$ 1,510	1,422
Other intangibles	24	28
Total noninterest expense	1,534	1,450
Income before provision and income taxes	592	380
Provision for credit losses	(4)
Income before income taxes	596	380
Income taxes and taxable-equivalent adjustment	217	138
Net income	379	242
Net income attributable to U.S. Bancorp	379	242
Average Balance Sheet
Commercial	$ 2,916	2,322
Commercial, Percent change	25.60%
Commercial real estate	$ 520	569
Commercial real estate, Percent change	(8.60%)
Residential mortgages	$ 2,272	1,816
Residential mortgages, Percent change	25.10%
Other retail	$ 1,553	1,517
Other retail, Percent change	2.40%
Total loans, excluding covered loans	$ 7,261	6,224
Total loans, excluding covered loans, Percent change	16.70%
Covered loans		1
Total loans	$ 7,261	6,225
Total loans, Percent change	16.60%
Goodwill, Percent change	(0.10%)
Other intangible assets, Percent change	(19.80%)
Assets, Percent change	12.10%
Noninterest-bearing deposits, Percent change	(4.60%)
Interest checking, Percent change	19.20%
Savings products, Percent change	7.60%
Time deposits, Percent change	15.90%
Total deposits, Percent change	6.70%
Total U.S. Bancorp shareholders' equity, Percent change	3.00%
Goodwill	$ 1,566	1,567
Other intangible assets	101	126
Assets	10,352	9,238
Noninterest-bearing deposits	13,735	14,393
Interest checking	9,484	7,959
Savings products	36,564	33,994
Time deposits	3,876	3,343
Total deposits	63,659	59,689
Total U.S. Bancorp shareholders' equity	2,382	2,312
Payment Services [Member]
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 2,140	1,930
Net interest income (taxable-equivalent basis), Percent change	10.90%
Noninterest income	$ 3,562	3,371
Noninterest income, Percent change	5.70%
Securities gains (losses), net, Percent change	0.00%
Total net revenue	$ 5,702	5,301
Total net revenue, Percent change	7.60%
Noninterest expense, Percent change	5.40%
Other intangibles, Percent change	16.70%
Total noninterest expense, Percent change	5.80%
Income before provision and income taxes, Percent change	9.30%
Provision for credit losses, Percent change	10.40%
Income before income taxes, Percent change	8.80%
Income taxes and taxable-equivalent adjustment, Percent change	9.20%
Net income, Percent change	8.60%
Net (income) loss attributable to noncontrolling interests, Percent change	(3.20%)
Net income attributable to U.S. Bancorp, Percent change	8.80%
Noninterest expense	$ 2,656	2,521
Other intangibles	119	102
Total noninterest expense	2,775	2,623
Income before provision and income taxes	2,927	2,678
Provision for credit losses	869	787
Income before income taxes	2,058	1,891
Income taxes and taxable-equivalent adjustment	750	687
Net income	1,308	1,204
Net (income) loss attributable to noncontrolling interests	(32)	(31)
Net income attributable to U.S. Bancorp	1,276	1,173
Average Balance Sheet
Commercial	$ 7,535	7,059
Commercial, Percent change	6.70%
Credit card	$ 20,490	18,057
Credit card, Percent change	13.50%
Other retail	$ 524	596
Other retail, Percent change	(12.10%)
Total loans, excluding covered loans	$ 28,549	25,712
Total loans, excluding covered loans, Percent change	11.00%
Total loans	$ 28,549	25,712
Total loans, Percent change	11.00%
Goodwill, Percent change	(0.40%)
Other intangible assets, Percent change	20.20%
Assets, Percent change	8.20%
Noninterest-bearing deposits, Percent change	8.20%
Savings products, Percent change	6.60%
Total deposits, Percent change	(33.50%)
Total U.S. Bancorp shareholders' equity, Percent change	8.90%
Goodwill	$ 2,465	2,475
Other intangible assets	494	411
Assets	34,409	31,796
Noninterest-bearing deposits	951	879
Interest checking		605
Savings products	97	91
Total deposits	1,048	1,575
Total U.S. Bancorp shareholders' equity	6,390	5,868
Treasury and Corporate Support [Member]
Condensed Income Statement
Net interest income (taxable-equivalent basis)	$ 2,062	2,347
Net interest income (taxable-equivalent basis), Percent change	(12.10%)
Noninterest income	$ 980	869
Noninterest income, Percent change	12.80%
Securities gains (losses), net	$ 20
Securities gains (losses), net, Percent change	0.00%
Total net revenue	$ 3,062	3,216
Total net revenue, Percent change	(4.80%)
Noninterest expense, Percent change	32.00%
Total noninterest expense, Percent change	32.00%
Income before provision and income taxes, Percent change	(14.90%)
Income before income taxes, Percent change	(15.50%)
Income taxes and taxable-equivalent adjustment, Percent change	(49.40%)
Net income, Percent change	(12.00%)
Net (income) loss attributable to noncontrolling interests, Percent change	(4.30%)
Net income attributable to U.S. Bancorp, Percent change	(12.20%)
Noninterest expense	$ 915	693
Total noninterest expense	915	693
Income before provision and income taxes	2,147	2,523
Provision for credit losses	1	(17)
Income before income taxes	2,146	2,540
Income taxes and taxable-equivalent adjustment	120	237
Net income	2,026	2,303
Net (income) loss attributable to noncontrolling interests	(24)	(23)
Net income attributable to U.S. Bancorp	2,002	2,280
Average Balance Sheet
Commercial	$ 386	285
Commercial, Percent change	35.40%
Commercial real estate	$ 3,103	3,423
Commercial real estate, Percent change	(9.30%)
Residential mortgages		9
Total loans, excluding covered loans	$ 3,489	3,717
Total loans, excluding covered loans, Percent change	(6.10%)
Covered loans	$ 30	50
Covered loans, Percent change	(40.00%)
Total loans	$ 3,519	3,767
Total loans, Percent change	(6.60%)
Assets, Percent change	6.50%
Noninterest-bearing deposits, Percent change	19.40%
Interest checking, Percent change	14.30%
Savings products, Percent change	1.40%
Time deposits, Percent change	31.00%
Total deposits, Percent change	21.30%
Total U.S. Bancorp shareholders' equity, Percent change	5.40%
Assets	$ 136,223	127,856
Noninterest-bearing deposits	2,097	1,757
Interest checking	40	35
Savings products	490	483
Time deposits	1,781	1,360
Total deposits	4,408	3,635
Total U.S. Bancorp shareholders' equity	$ 18,379	$ 17,432

Significant Accounting Polici63

Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)SecurityLoanSegmentBusiness
Significant Accounting Policies Additional Information [Line Items]
Number of reportable operating segments | Segment	5
Wealth Management and Securities Services number of businesses | Business	5
Maximum equity investments in public entities accounted for as available-for-sale securities and carried at fair value	20.00%
Minimum ownership percentage for significant influence in entities accounted for using equity method	20.00%
Maximum ownership percentage for significant influence in entities accounted for using equity method	50.00%
Minimum ownership percentage for Limited Partnerships and Limited Liability Companies accounted for using equity method	5.00%
Number of loan portfolio segments | Segment	3
Minimum period for non collection of principal and interest placed on nonaccrual status for commercial lending segment loans	90 days
Minimum period beyond which revolving consumer lines and credit cards are charged off	180 days
Minimum period beyond which residential mortgages and other retail loans secured by 1-4 family properties are charged down to fair value of the collateral securing the loan less costs to sell	180 days
Minimum period beyond which other retail loans not secured by 1-4 family properties are charged off	120 days
Maximum restructuring period under credit card and other retail loan financial difficulty modifications	60 months
Pension plan assets unrealized difference between actual experience and expected returns amortization period	15 years
Junior Lien [Member]
Significant Accounting Policies Additional Information [Line Items]
Loans and lines in a junior lien position secured by 1-4 family properties placed on nonaccrual status	120 days
First Lien [Member]
Significant Accounting Policies Additional Information [Line Items]
Loans and lines in a junior lien position placed on nonaccrual status when behind a first lien past due	180 days
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
Significant Accounting Policies Additional Information [Line Items]
Useful life	20 years
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Significant Accounting Policies Additional Information [Line Items]
Useful life	3 years
Building [Member]
Significant Accounting Policies Additional Information [Line Items]
Useful life	40 years
Commercial Lending Segment [Member]
Significant Accounting Policies Additional Information [Line Items]
Number of classes of loans	2
Commercial Lending Segment [Member] | Maximum [Member]
Significant Accounting Policies Additional Information [Line Items]
Period of loss experience	16 years
Commercial Lending Segment [Member] | Minimum [Member]
Significant Accounting Policies Additional Information [Line Items]
Impairment loan threshold for allowance in which loans are individually analyzed | $	$ 5,000,000
Consumer Lending Segment [Member]
Significant Accounting Policies Additional Information [Line Items]
Number of classes of loans	3
Covered Loan Segment [Member]
Significant Accounting Policies Additional Information [Line Items]
Number of classes of loans	1

Restrictions on Cash and Due 64

Restrictions on Cash and Due from Banks - Additional Information (Detail) - USD ($) $ in Billions	Dec. 31, 2016	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Minimum average reserve balances required by banking regulators	$ 3	$ 2.2
Balances held at the federal reserve and other financial institutions	$ 2.9	$ 3.3

Investment Securities - Inves65

Investment Securities - Investment Securities Held-to-Maturity (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	$ 42,991	$ 43,590
Held-to-maturity securities, Unrealized Gains	106	199
Held-to-maturity securities, Unrealized Losses Other	(662)	(296)
Held-to-maturity securities, Fair Value	42,435	43,493
U.S. Treasury and Agencies [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	5,246	2,925
Held-to-maturity securities, Unrealized Gains	12	14
Held-to-maturity securities, Unrealized Losses Other	(132)	(20)
Held-to-maturity securities, Fair Value	5,126	2,919
Mortgage-Backed Securities Residential [Member] | Agency [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	37,706	40,619
Held-to-maturity securities, Unrealized Gains	85	175
Held-to-maturity securities, Unrealized Losses Other	(529)	(273)
Held-to-maturity securities, Fair Value	37,262	40,521
Mortgage-Backed Securities Residential [Member] | Non-Agency Non-Prime [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	1	1
Held-to-maturity securities, Fair Value	1	1
Asset-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	8
Held-to-maturity securities, Fair Value	16
Asset-Backed Securities [Member] | Collateralized Loan Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Unrealized Gains	5	6
Held-to-maturity securities, Fair Value	5	6
Asset-Backed Securities [Member] | Asset-Backed Securities Other [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	8	10
Held-to-maturity securities, Unrealized Gains	3	3
Held-to-maturity securities, Fair Value	11	13
Obligations of State and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	6	8
Held-to-maturity securities, Unrealized Gains	1	1
Held-to-maturity securities, Unrealized Losses Other		(1)
Held-to-maturity securities, Fair Value	7	8
Obligations of Foreign Governments [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	9	9
Held-to-maturity securities, Fair Value	9	9
Other Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity securities, Amortized Cost	15	18
Held-to-maturity securities, Unrealized Losses Other	(1)	(2)
Held-to-maturity securities, Fair Value	$ 14	$ 16

Investment Securities - Inves66

Investment Securities - Investment Securities Available-for-Sale (Detail) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		$ 66,985	$ 61,817
Available-for-sale securities, Unrealized Gains		334	660
Available-for-sale securities, Unrealized Losses Other-than-Temporary		(6)	(4)
Available-for-sale securities, Unrealized Losses Other		(1,029)	(476)
Available-for-sale securities, Fair Value	[1]	66,284	61,997
U.S. Treasury and Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		17,314	4,611
Available-for-sale securities, Unrealized Gains		11	12
Available-for-sale securities, Unrealized Losses Other		(198)	(27)
Available-for-sale securities, Fair Value		17,127	4,596
Mortgage-Backed Securities Residential [Member] | Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		43,558	50,056
Available-for-sale securities, Unrealized Gains		225	384
Available-for-sale securities, Unrealized Losses Other		(645)	(364)
Available-for-sale securities, Fair Value		43,138	50,076
Mortgage-Backed Securities Residential [Member] | Non-Agency Prime [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		240	316
Available-for-sale securities, Unrealized Gains		6	6
Available-for-sale securities, Unrealized Losses Other-than-Temporary		(3)	(3)
Available-for-sale securities, Unrealized Losses Other		(1)	(1)
Available-for-sale securities, Fair Value		242	318
Mortgage-Backed Securities Residential [Member] | Non-Agency Non-Prime [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		178	221
Available-for-sale securities, Unrealized Gains		20	20
Available-for-sale securities, Unrealized Losses Other-than-Temporary		(3)	(1)
Available-for-sale securities, Fair Value		195	240
Commercial [Member] | Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		15	52
Available-for-sale securities, Fair Value		15	52
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		475
Available-for-sale securities, Fair Value		483
Asset-Backed Securities [Member] | Collateralized Loan Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost			16
Available-for-sale securities, Unrealized Gains			3
Available-for-sale securities, Fair Value			19
Asset-Backed Securities [Member] | Asset-Backed Securities Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		475	532
Available-for-sale securities, Unrealized Gains		8	9
Available-for-sale securities, Fair Value		483	541
Obligations of State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		5,167	5,149
Available-for-sale securities, Unrealized Gains		55	169
Available-for-sale securities, Unrealized Losses Other		(183)	(2)
Available-for-sale securities, Fair Value		5,039	5,316
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		11	677
Available-for-sale securities, Unrealized Gains			3
Available-for-sale securities, Unrealized Losses Other		(2)	(70)
Available-for-sale securities, Fair Value		9	610
Perpetual Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost			153
Available-for-sale securities, Unrealized Gains			20
Available-for-sale securities, Unrealized Losses Other			(12)
Available-for-sale securities, Fair Value			161
Other Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost		27	34
Available-for-sale securities, Unrealized Gains		9	34
Available-for-sale securities, Fair Value		$ 36	$ 68
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Investment Securities - Inves67

Investment Securities - Investment Securities Available-for-Sale (Parenthetical) (Detail)	Dec. 31, 2016CreditScore
Investments, Debt and Equity Securities [Abstract]
Minimum weighted-average credit score of prime securities	725
Maximum loan-to-value of prime securities	80.00%

Investment Securities - Additio

Investment Securities - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Weighted-average maturity of available-for-sale investment securities	5 years 1 month 6 days	4 years 8 months 12 days
Weighted-average yields of available-for-sale investment securities	2.06%	2.21%
Weighted-average maturity of held-to-maturity investment securities	4 years 7 months 6 days	4 years 2 months 12 days
Weighted-average yields of held-to-maturity investment securities	1.93%	1.92%
Fair value of securities pledged	$ 11,300	$ 13,100
Fair value of securities pledged as collateral where counterparty has right to repledge or resell	$ 755	$ 1,000

Investment Securities - Amount

Investment Securities - Amount of Interest Income from Taxable and Non-Taxable Investment Securities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Income, Securities, Operating, by Taxable Status [Abstract]
Taxable	$ 1,878	$ 1,778	$ 1,634
Non-taxable	200	223	232
Total interest income from investment securities	$ 2,078	$ 2,001	$ 1,866

Investment Securities - Amoun70

Investment Securities - Amount of Gross Gains and Losses Realized through Sales of Available-for-Sale Investment Securities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments [Abstract]
Realized gains	$ 93	$ 7	$ 11
Realized losses	(66)	(6)
Net realized gains (losses)	27	$ 1	11
Income tax (benefit) on net realized gains (losses)	$ 10		$ 4

Investment Securities - Changes

Investment Securities - Changes in Credit Losses on Debt Securities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Credit Losses on Debt Securities [RollForward]
Balance at beginning of period	$ 84	$ 101	$ 116
Decreases in expected cash flows on securities for which other-than-temporary impairment was previously recognized	3	1	3
Total other-than-temporary impairment on debt securities	3	1	3
Increases in expected cash flows	(2)	(3)	(5)
Realized losses	(10)	(15)	(13)
Balance at end of period	$ 75	$ 84	$ 101

Investment Securities - Gross U

Investment Securities - Gross Unrealized Losses and Fair Value of Company's Investment Securities (Detail) $ in Millions	Dec. 31, 2016USD ($)
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	$ 30,614
Unrealized Losses Less Than 12 Months	(595)
Fair Value 12 Months or Greater	2,137
Unrealized Losses 12 Months or Greater	(67)
Fair Value Total	32,751
Unrealized Losses Total	(662)
Fair Value Less Than 12 Months	47,403
Unrealized Losses Less Than 12 Months	(934)
Fair Value 12 Months or Greater	3,268
Unrealized Losses 12 Months or Greater	(101)
Fair Value Total	50,671
Unrealized Losses Total	(1,035)
U.S. Treasury and Agencies [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	3,662
Unrealized Losses Less Than 12 Months	(132)
Fair Value Total	3,662
Unrealized Losses Total	(132)
Fair Value Less Than 12 Months	14,490
Unrealized Losses Less Than 12 Months	(198)
Fair Value Total	14,490
Unrealized Losses Total	(198)
Mortgage-Backed Securities Residential [Member] | Agency [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	26,937
Unrealized Losses Less Than 12 Months	(462)
Fair Value 12 Months or Greater	2,132
Unrealized Losses 12 Months or Greater	(67)
Fair Value Total	29,069
Unrealized Losses Total	(529)
Fair Value Less Than 12 Months	30,601
Unrealized Losses Less Than 12 Months	(552)
Fair Value 12 Months or Greater	3,149
Unrealized Losses 12 Months or Greater	(93)
Fair Value Total	33,750
Unrealized Losses Total	(645)
Mortgage-Backed Securities Residential [Member] | Non-Agency Prime [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	11
Fair Value 12 Months or Greater	93
Unrealized Losses 12 Months or Greater	(4)
Fair Value Total	104
Unrealized Losses Total	(4)
Mortgage-Backed Securities Residential [Member] | Non-Agency Non-Prime [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	18
Unrealized Losses Less Than 12 Months	(1)
Fair Value 12 Months or Greater	12
Unrealized Losses 12 Months or Greater	(2)
Fair Value Total	30
Unrealized Losses Total	(3)
Commercial [Member] | Agency [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	10
Fair Value Total	10
Asset-Backed Securities [Member] | Asset-Backed Securities Other [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value 12 Months or Greater	5
Fair Value Total	5
Fair Value 12 Months or Greater	2
Fair Value Total	2
Obligations of State and Political Subdivisions [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	2,272
Unrealized Losses Less Than 12 Months	(183)
Fair Value 12 Months or Greater	3
Fair Value Total	2,275
Unrealized Losses Total	(183)
Corporate Debt Securities [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value 12 Months or Greater	9
Unrealized Losses 12 Months or Greater	(2)
Fair Value Total	9
Unrealized Losses Total	(2)
Other Investment [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	1
Fair Value Total	1
Other Debt Securities [Member]
Continuous Gross Unrealized Losses And Fair Value [Abstract]
Fair Value Less Than 12 Months	15
Unrealized Losses Less Than 12 Months	(1)
Fair Value Total	15
Unrealized Losses Total	$ (1)

Investment Securities - Gross73

Investment Securities - Gross Unrealized Losses and Fair Value of Company's Investment Securities (Parenthetical) (Detail) $ in Millions	Dec. 31, 2016USD ($)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Unrealized Losses Total	$ 1,035
Non-Agency [Member] | Mortgage-Backed Securities Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Unrealized Losses Total	$ 7

Loans and Allowance for Credi74

Loans and Allowance for Credit Losses - Composition of Loan Portfolio (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	$ 269,371	$ 256,253
Total loans	273,207	260,849
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	87,928	83,116
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	93,386	88,402
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	43,098	42,137
Residential Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	57,274	53,496
Other Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	53,864	51,206
Lease Financing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	5,458	5,286
Commercial Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	31,592	31,773
Construction and Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	11,506	10,364
Residential Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	43,632	40,425
Home Equity Loans, First Liens [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	13,642	13,071
Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	21,749	21,012
Retail Leasing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	6,316	5,232
Home Equity and Second Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	16,369	16,384
Revolving Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	3,282	3,354
Installment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	8,087	7,030
Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	17,571	16,587
Student [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	2,239	2,619
Total Loans, Excluding Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, excluding covered loans	269,371	256,253
Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 3,836	$ 4,596

Loans and Allowance for Credi75

Loans and Allowance for Credit Losses - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2016USD ($)SecurityLoan	Dec. 31, 2016USD ($)MortgageLoan	Dec. 31, 2015USD ($)
Loans and Allowance for Credit Losses [Line Items]
Loans pledged at the Federal Home Loan Bank	$ 84,500,000,000	$ 84,500,000,000	$ 78,100,000,000
Loans pledged at the Federal Reserve Bank	66,500,000,000	66,500,000,000	63,400,000,000
Unearned interest and deferred fees and costs on originated loans	672,000,000	672,000,000	550,000,000
Foreclosed residential real estate property included in other real estate owned	201,000,000	201,000,000	282,000,000
Foreclosed residential real estate property included in other real estate owned excluding covered assets	175,000,000	175,000,000	250,000,000
Foreclosed residential real estate related to mortgage loans whose payments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs	373,000,000	373,000,000	535,000,000
Residential mortgage loans secured by residential real estate in process of foreclosure	2,100,000,000	$ 2,100,000,000	2,600,000,000
Number of residential mortgage loans, home equity and second mortgage loans, and GNMA loans where trial period was unsuccessful and no longer eligible for a permanent modification | MortgageLoan		1,697
Outstanding balance of residential mortgage loans, home equity and second mortgage loans, and GNMA loans where trial period was unsuccessful and no longer eligible for a permanent modification		$ 230,000,000
Government National Mortgage Association [Member]
Loans and Allowance for Credit Losses [Line Items]
Residential mortgage loans secured by residential real estate in process of foreclosure purchased from GNMA mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs	$ 1,600,000,000	$ 1,600,000,000	$ 1,900,000,000
Home Equity and Second Mortgages [Member]
Loans and Allowance for Credit Losses [Line Items]
Number of loans in trial period | SecurityLoan	6
Home Equity and Second Mortgages [Member] | Maximum [Member]
Loans and Allowance for Credit Losses [Line Items]
Outstanding balance of loans in trial period	$ 1,000,000
Estimated post-modification balance of loans in trial period	$ 1,000,000
Residential Mortgages [Member]
Loans and Allowance for Credit Losses [Line Items]
Number of loans in trial period | SecurityLoan	106
Outstanding balance of loans in trial period	$ 11,000,000
Estimated post-modification balance of loans in trial period	$ 13,000,000
Government National Mortgage Association [Member]
Loans and Allowance for Credit Losses [Line Items]
Number of loans in trial period | SecurityLoan	1,366
Outstanding balance of loans in trial period	$ 179,000,000
Estimated post-modification balance of loans in trial period	$ 175,000,000

Loans and Allowance for Credi76

Loans and Allowance for Credit Losses - Changes in Accretable Balance for Purchased Impaired Loans (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deteriorated Loans Transferred in [Abstract]
Balance at beginning of period	$ 957	$ 1,309	$ 1,655
Accretion	(392)	(382)	(441)
Disposals	(110)	(132)	(131)
Reclassifications from nonaccretable difference	244	163	229
Other	(1)	(1)	(3)
Balance at end of period	$ 698	$ 957	$ 1,309

Loans and Allowance for Credi77

Loans and Allowance for Credit Losses - Activity in Allowance for Credit Losses by Portfolio Class (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	$ 4,306	$ 4,375	$ 4,537
Provision for credit losses	1,324	1,132	1,229
Loans charged off	1,615	1,516	1,679
Less recoveries of loans charged off	(346)	(344)	(345)
Net loans charged off	1,269	1,172	1,334
Other changes	(4)	(29)	(57)
Balance at end of period	4,357	4,306	4,375
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,287	1,146	1,075
Provision for credit losses	488	361	266
Loans charged off	417	314	305
Less recoveries of loans charged off	(92)	(95)	(110)
Net loans charged off	325	219	195
Other changes		(1)
Balance at end of period	1,450	1,287	1,146
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	724	726	776
Provision for credit losses	75	(30)	(63)
Loans charged off	22	22	36
Less recoveries of loans charged off	(35)	(50)	(49)
Net loans charged off	(13)	(28)	(13)
Balance at end of period	812	724	726
Residential Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	631	787	875
Provision for credit losses	(61)	(47)	107
Loans charged off	85	135	216
Less recoveries of loans charged off	(25)	(26)	(21)
Net loans charged off	60	109	195
Balance at end of period	510	631	787
Other Retail [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	743	771	781
Provision for credit losses	95	193	278
Loans charged off	332	319	384
Less recoveries of loans charged off	(111)	(98)	(96)
Net loans charged off	221	221	288
Balance at end of period	617	743	771
Credit Card [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	883	880	884
Provision for credit losses	728	654	657
Loans charged off	759	726	725
Less recoveries of loans charged off	(83)	(75)	(67)
Net loans charged off	676	651	658
Other changes	(1)		(3)
Balance at end of period	934	883	880
Total Loans, Excluding Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	4,268	4,310	4,391
Provision for credit losses	1,325	1,131	1,245
Loans charged off	1,615	1,516	1,666
Less recoveries of loans charged off	(346)	(344)	(343)
Net loans charged off	1,269	1,172	1,323
Other changes	(1)	(1)	(3)
Balance at end of period	4,323	4,268	4,310
Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	38	65	146
Provision for credit losses	(1)	1	(16)
Loans charged off			13
Less recoveries of loans charged off			(2)
Net loans charged off			11
Other changes	(3)	(28)	(54)
Balance at end of period	$ 34	$ 38	$ 65

Loans and Allowance for Credi78

Loans and Allowance for Credit Losses - Additional Detail of Allowance for Credit Losses and Related Loan Balances by Portfolio Class (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance Balance at End of Period
Loans individually evaluated for impairment	$ 54	$ 13
TDRs collectively evaluated for impairment	282	345
Other loans collectively evaluated for impairment	3,982	3,900
Loans acquired with deteriorated credit quality	39	48
Total allowance for credit losses	4,357	4,306	$ 4,375	$ 4,537
Loan Balance at End of Period
Loans individually evaluated for impairment	693	390
TDRs collectively evaluated for impairment	4,399	5,070
Other loans collectively evaluated for impairment	265,728	252,590
Loans acquired with deteriorated credit quality	2,387	2,799
Total loans	269,371	256,253
Total loans	273,207	260,849
Commercial [Member]
Allowance Balance at End of Period
Loans individually evaluated for impairment	50	11
TDRs collectively evaluated for impairment	12	10
Other loans collectively evaluated for impairment	1,388	1,266
Total allowance for credit losses	1,450	1,287	1,146	1,075
Loan Balance at End of Period
Loans individually evaluated for impairment	623	336
TDRs collectively evaluated for impairment	145	138
Other loans collectively evaluated for impairment	92,611	87,927
Loans acquired with deteriorated credit quality	7	1
Total loans	93,386	88,402
Commercial Real Estate [Member]
Allowance Balance at End of Period
Loans individually evaluated for impairment	4	2
TDRs collectively evaluated for impairment	4	7
Other loans collectively evaluated for impairment	798	703
Loans acquired with deteriorated credit quality	6	12
Total allowance for credit losses	812	724	726	776
Loan Balance at End of Period
Loans individually evaluated for impairment	70	41
TDRs collectively evaluated for impairment	146	235
Other loans collectively evaluated for impairment	42,751	41,566
Loans acquired with deteriorated credit quality	131	295
Total loans	43,098	42,137
Residential Mortgages [Member]
Allowance Balance at End of Period
TDRs collectively evaluated for impairment	180	236
Other loans collectively evaluated for impairment	330	395
Total allowance for credit losses	510	631	787	875
Loan Balance at End of Period
Loans individually evaluated for impairment		13
TDRs collectively evaluated for impairment	3,678	4,241
Other loans collectively evaluated for impairment	53,595	49,241
Loans acquired with deteriorated credit quality	1	1
Total loans	57,274	53,496
Other Retail [Member]
Allowance Balance at End of Period
TDRs collectively evaluated for impairment	20	33
Other loans collectively evaluated for impairment	597	710
Total allowance for credit losses	617	743	771	781
Loan Balance at End of Period
TDRs collectively evaluated for impairment	173	211
Other loans collectively evaluated for impairment	53,691	50,995
Total loans	53,864	51,206
Credit Card [Member]
Allowance Balance at End of Period
TDRs collectively evaluated for impairment	65	57
Other loans collectively evaluated for impairment	869	826
Total allowance for credit losses	934	883	880	884
Loan Balance at End of Period
TDRs collectively evaluated for impairment	222	210
Other loans collectively evaluated for impairment	21,527	20,802
Total loans	21,749	21,012
Total Loans, Excluding Covered Loans [Member]
Allowance Balance at End of Period
Loans individually evaluated for impairment	54	13
TDRs collectively evaluated for impairment	281	343
Other loans collectively evaluated for impairment	3,982	3,900
Loans acquired with deteriorated credit quality	6	12
Total allowance for credit losses	4,323	4,268	4,310	4,391
Loan Balance at End of Period
Loans individually evaluated for impairment	693	390
TDRs collectively evaluated for impairment	4,364	5,035
Other loans collectively evaluated for impairment	264,175	250,531
Loans acquired with deteriorated credit quality	139	297
Total loans	269,371	256,253
Covered Loans [Member]
Allowance Balance at End of Period
TDRs collectively evaluated for impairment	1	2
Loans acquired with deteriorated credit quality	33	36
Total allowance for credit losses	34	38	$ 65	$ 146
Loan Balance at End of Period
TDRs collectively evaluated for impairment	35	35
Other loans collectively evaluated for impairment	1,553	2,059
Loans acquired with deteriorated credit quality	2,248	2,502
Total loans	$ 3,836	$ 4,596

Loans and Allowance for Credi79

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Class and Delinquency Status of those that Continue to Accrue Interest and are Nonperforming (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 269,994	$ 257,721
Accruing 30-89 Days Past Due	1,081	1,105
Accruing 90 Days or More Past Due	764	831	$ 945	$ 1,189	$ 1,323
Nonperforming	1,368	1,192	1,466	1,603	2,079
Total loans, excluding covered loans	269,371	256,253
Total loans	273,207	260,849
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	92,588	87,863
Accruing 30-89 Days Past Due	263	317
Accruing 90 Days or More Past Due	52	48
Nonperforming	483	174	112	134	123
Total loans, excluding covered loans	93,386	88,402
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	42,922	41,907
Accruing 30-89 Days Past Due	44	89
Accruing 90 Days or More Past Due	8	14
Nonperforming	124	127	259	303	546
Total loans, excluding covered loans	43,098	42,137
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	56,372	52,438
Accruing 30-89 Days Past Due	151	170
Accruing 90 Days or More Past Due	156	176
Nonperforming	595	712	864	770	661
Total loans, excluding covered loans	57,274	53,496
Other Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	53,340	50,745
Accruing 30-89 Days Past Due	284	224
Accruing 90 Days or More Past Due	83	75
Nonperforming	157	162	187	191	217
Total loans, excluding covered loans	53,864	51,206
Credit Card [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	21,209	20,532
Accruing 30-89 Days Past Due	284	243
Accruing 90 Days or More Past Due	253	228
Nonperforming	3	9	30	78	146
Total loans, excluding covered loans	21,749	21,012
Total Loans, Excluding Covered Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	266,431	253,485
Accruing 30-89 Days Past Due	1,026	1,043
Accruing 90 Days or More Past Due	552	541
Nonperforming	1,362	1,184	1,452	1,476	1,693
Total loans, excluding covered loans	269,371	256,253
Covered Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,563	4,236
Accruing 30-89 Days Past Due	55	62
Accruing 90 Days or More Past Due	212	290
Nonperforming	6	8	$ 14	$ 127	$ 386
Total loans	$ 3,836	$ 4,596

Loans and Allowance for Credi80

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Class and Delinquency Status of those that Continue to Accrue Interest and are Nonperforming (Parenthetical) (Detail) - Government National Mortgage Association [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 days past due purchased from Government National Mortgage Association mortgage pools whose payments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs, were classified as current	$ 273	$ 320
Loans 90 days or more past due purchased from Government National Mortgage Association mortgage pools whose payments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs, were classified as current	$ 2,500	$ 2,900

Loans and Allowance for Credi81

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Class and Company's Internal Credit Quality Rating (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	$ 269,371	$ 256,253
Total loans	273,207	260,849
Total outstanding commitments	573,253	548,404
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	266,665	255,014
Total outstanding commitments	562,704	539,614
Special Mention Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,400	2,002
Total outstanding commitments	4,920	3,945
Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,142	3,833
Total outstanding commitments	5,629	4,845
Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,542	5,835
Total outstanding commitments	10,549	8,790
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	93,386	88,402
Commercial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	89,739	85,206
Commercial [Member] | Special Mention Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	1,721	1,629
Commercial [Member] | Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	1,926	1,567
Commercial [Member] | Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	3,647	3,196
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	43,098	42,137
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	41,634	41,079
Commercial Real Estate [Member] | Special Mention Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	663	365
Commercial Real Estate [Member] | Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	801	693
Commercial Real Estate [Member] | Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	1,464	1,058
Residential Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	57,274	53,496
Residential Mortgages [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	56,457	52,548
Residential Mortgages [Member] | Special Mention Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	10	2
Residential Mortgages [Member] | Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	807	946
Residential Mortgages [Member] | Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	817	948
Other Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	53,864	51,206
Other Retail [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	53,576	50,899
Other Retail [Member] | Special Mention Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	6	6
Other Retail [Member] | Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	282	301
Other Retail [Member] | Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	288	307
Credit Card [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	21,749	21,012
Credit Card [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	21,493	20,775
Credit Card [Member] | Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	256	237
Credit Card [Member] | Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	256	237
Total Loans, Excluding Covered Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	269,371	256,253
Total Loans, Excluding Covered Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	262,899	250,507
Total Loans, Excluding Covered Loans [Member] | Special Mention Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	2,400	2,002
Total Loans, Excluding Covered Loans [Member] | Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	4,072	3,744
Total Loans, Excluding Covered Loans [Member] | Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans, excluding covered loans	6,472	5,746
Covered Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,836	4,596
Covered Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,766	4,507
Covered Loans [Member] | Classified Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	70	89
Covered Loans [Member] | Total Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 70	$ 89

Loans and Allowance for Credi82

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Class and Company's Internal Credit Quality Rating (Parenthetical) (Detail) - USD ($) $ in Billions	Dec. 31, 2016	Dec. 31, 2015
Energy Business Sector [Member] | Special Mention or Classified Rating [Member]
Financing Receivable, Recorded Investment [Line Items]
Energy loans	$ 1.2	$ 1.1
Energy total outstanding commitments	2.8	1.9
Trouble Debt Restructure [Member] | Government National Mortgage Association [Member]
Financing Receivable, Recorded Investment [Line Items]
Restructured GNMA loans whose repayments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs, were classified with a pass rating	1.6	1.9
GNMA loans 90 days or more past due whose repayments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs, were classified with a pass rating	$ 2.5	$ 2.9

Loans and Allowance for Credi83

Loans and Allowance for Credit Losses - Summary of Impaired Loans, which Include Nonaccrual and TDR Loans, by Portfolio Class (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	$ 5,529	$ 5,902
Unpaid Principal Balance	7,202	7,879
Valuation Allowance	346	369
Commitments to Lend Additional Funds	289	160
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	849	520
Unpaid Principal Balance	1,364	1,110
Valuation Allowance	68	25
Commitments to Lend Additional Funds	284	154
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	293	336
Unpaid Principal Balance	697	847
Valuation Allowance	10	11
Commitments to Lend Additional Funds		1
Residential Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	2,274	2,575
Unpaid Principal Balance	2,847	3,248
Valuation Allowance	153	199
Other Retail [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	281	309
Unpaid Principal Balance	456	503
Valuation Allowance	22	35
Commitments to Lend Additional Funds	4	4
Credit Card [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	222	210
Unpaid Principal Balance	222	210
Valuation Allowance	64	57
Total Loans, Excluding GNMA and Covered Loans [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	3,919	3,950
Unpaid Principal Balance	5,586	5,918
Valuation Allowance	317	327
Commitments to Lend Additional Funds	288	159
Covered Loans [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	36	39
Unpaid Principal Balance	42	48
Valuation Allowance	1	2
Commitments to Lend Additional Funds	1	1
Government National Mortgage Association [Member]
Financing Receivable, Impaired [Line Items]
Period-end Recorded Investment	1,574	1,913
Unpaid Principal Balance	1,574	1,913
Valuation Allowance	$ 28	$ 40

Loans and Allowance for Credi84

Loans and Allowance for Credit Losses - Summary of Impaired Loans, which Include Nonaccrual and TDR Loans, by Portfolio Class (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Loan and Lease Receivables, Impaired [Abstract]
Interest income recognized on impaired loans	$ 237
Interest income that would have been recognized on impaired loans at original contractual loan terms	$ 308

Loans and Allowance for Credi85

Loans and Allowance for Credit Losses - Impaired Loans Average Recorded Investment and Interest Income Recognized (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 5,710	$ 6,160	$ 7,341
Interest Income Recognized	237	274	340
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	799	383	414
Interest Income Recognized	9	13	9
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	324	433	592
Interest Income Recognized	15	16	26
Residential Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	2,422	2,666	2,742
Interest Income Recognized	124	131	140
Other Retail [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	293	336	377
Interest Income Recognized	13	14	17
Credit Card [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	214	221	273
Interest Income Recognized	4	4	9
Total Loans, Excluding GNMA and Covered Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	4,052	4,039	4,398
Interest Income Recognized	165	178	201
Covered Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	38	42	334
Interest Income Recognized	1	1	15
Government National Mortgage Association [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,620	2,079	2,609
Interest Income Recognized	$ 71	$ 95	$ 124

Loans and Allowance for Credi86

Loans and Allowance for Credit Losses - Summary of Loans Modified as TDRs (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)SecurityLoan	Dec. 31, 2015USD ($)SecurityLoan	Dec. 31, 2014USD ($)SecurityLoan
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	48,958	41,312	42,542
Pre-Modification Outstanding Loan Balance	$ 2,743	$ 1,779	$ 1,809
Post-Modification Outstanding Loan Balance	$ 2,600	$ 1,785	$ 1,781
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	2,352	1,607	2,027
Pre-Modification Outstanding Loan Balance	$ 844	$ 385	$ 238
Post-Modification Outstanding Loan Balance	$ 699	$ 396	$ 203
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	102	108	78
Pre-Modification Outstanding Loan Balance	$ 259	$ 78	$ 80
Post-Modification Outstanding Loan Balance	$ 256	$ 76	$ 71
Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1,576	2,080	2,089
Pre-Modification Outstanding Loan Balance	$ 168	$ 260	$ 271
Post-Modification Outstanding Loan Balance	$ 178	$ 258	$ 274
Other Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	2,235	2,530	2,833
Pre-Modification Outstanding Loan Balance	$ 41	$ 54	$ 61
Post-Modification Outstanding Loan Balance	$ 40	$ 54	$ 61
Credit Card [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	31,394	26,772	26,511
Pre-Modification Outstanding Loan Balance	$ 151	$ 133	$ 144
Post-Modification Outstanding Loan Balance	$ 153	$ 134	$ 145
Total Loans, Excluding GNMA and Covered Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	37,659	33,097	33,538
Pre-Modification Outstanding Loan Balance	$ 1,463	$ 910	$ 794
Post-Modification Outstanding Loan Balance	$ 1,326	$ 918	$ 754
Covered Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	39	16	43
Pre-Modification Outstanding Loan Balance	$ 6	$ 5	$ 15
Post-Modification Outstanding Loan Balance	$ 7	$ 5	$ 14
Government National Mortgage Association [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	11,260	8,199	8,961
Pre-Modification Outstanding Loan Balance	$ 1,274	$ 864	$ 1,000
Post-Modification Outstanding Loan Balance	$ 1,267	$ 862	$ 1,013

Loans and Allowance for Credi87

Loans and Allowance for Credit Losses - Summary of Loans Modified as TDRs in the Past Twelve Months that have Subsequently Defaulted (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)SecurityLoan	Dec. 31, 2015USD ($)SecurityLoan	Dec. 31, 2014USD ($)SecurityLoan
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	8,157	8,310	9,332
Amount Defaulted | $	$ 118	$ 182	$ 306
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	531	494	629
Amount Defaulted | $	$ 24	$ 21	$ 44
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	27	18	22
Amount Defaulted | $	$ 12	$ 8	$ 12
Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	132	273	611
Amount Defaulted | $	$ 17	$ 36	$ 86
Other Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	434	636	845
Amount Defaulted | $	$ 9	$ 12	$ 24
Credit Card [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	6,827	6,286	6,335
Amount Defaulted | $	$ 30	$ 29	$ 33
Total Loans, Excluding GNMA and Covered Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	7,951	7,707	8,442
Amount Defaulted | $	$ 92	$ 106	$ 199
Covered Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	4	5	14
Amount Defaulted | $	$ 1	$ 1	$ 5
Government National Mortgage Association [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	202	598	876
Amount Defaulted | $	$ 25	$ 75	$ 102

Loans and Allowance for Credi88

Loans and Allowance for Credit Losses - Carrying Amount of Covered Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Covered Assets [Line Items]
Purchased Impaired Loans	$ 2,248	$ 2,502
Purchased Nonimpaired Loans	784	1,062
Other	830	1,064
Covered loans	3,836	4,596
Total Covered Assets	3,862	4,628
Residential Mortgages [Member]
Covered Assets [Line Items]
Purchased Impaired Loans	2,248	2,502
Purchased Nonimpaired Loans	506	615
Covered loans	2,754	3,117
Other Retail [Member]
Covered Assets [Line Items]
Purchased Nonimpaired Loans	278	447
Covered loans	278	447
Losses Reimbursable by FDIC [Member]
Covered Assets [Line Items]
Other	381	517
Covered loans	381	517
Unamortized Changes in FDIC Asset [Member]
Covered Assets [Line Items]
Other	423	515
Covered loans	423	515
Covered Loans [Member]
Covered Assets [Line Items]
Purchased Impaired Loans	2,248	2,502
Purchased Nonimpaired Loans	784	1,062
Other	804	1,032
Covered loans	3,836	4,596
Foreclosed Real Estate [Member]
Covered Assets [Line Items]
Other	26	32
Total Covered Assets	$ 26	$ 32

Loans and Allowance for Credi89

Loans and Allowance for Credit Losses - Carrying Amount of Covered Assets (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loss sharing agreement remaining term	3 years

Leases - Components of Net Inve

Leases - Components of Net Investment in Sales-Type and Direct Financing Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Capital Leases, Net Investment in Direct Financing and Sales Type Leases [Abstract]
Aggregate future minimum lease payments to be received	$ 11,257	$ 10,257
Unguaranteed residual values accruing to the lessor's benefit	1,175	766
Unearned income	(1,023)	(887)
Initial direct costs	237	204
Total net investment in sales-type and direct financing leases	$ 11,646	$ 10,340

Leases - Components of Net In91

Leases - Components of Net Investment in Sales-Type and Direct Financing Leases (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Capital Leases, Net Investment in Direct Financing and Sales Type Leases [Abstract]
Accumulated allowance for uncollectible minimum lease payments	$ 83	$ 66

Leases - Minimum Future Lease P

Leases - Minimum Future Lease Payments to be Received from Sales-Type and Direct Financing Leases (Detail) $ in Millions	Dec. 31, 2016USD ($)
Capital Leases, Future Minimum Payments Receivable, Fiscal Year Maturity [Abstract]
2,017	$ 3,836
2,018	2,884
2,019	2,641
2,020	1,116
2,021	375
Thereafter	$ 405

Accounting for Transfers and 93

Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Minimum [Member]
Variable Interest Entity [Line Items]
Aggregate amount of investments in unconsolidated VIEs	$ 1,000,000	$ 1,000,000
Maximum [Member]
Variable Interest Entity [Line Items]
Aggregate amount of investments in unconsolidated VIEs	40,000,000	46,000,000
Financial Support Waived Fees [Member]
Variable Interest Entity [Line Items]
Financial or other support to money market funds	45,000,000	112,000,000	$ 119,000,000
Private Investment Funds and Partnerships [Member]
Variable Interest Entity [Line Items]
Investment carrying amount	28,000,000	32,000,000
Maximum exposure to loss	50,000,000	47,000,000
Community Development and Tax Advantaged Investments [Member]
Variable Interest Entity [Line Items]
Federal and state income tax credits recognized in tax expense	698,000,000	733,000,000	773,000,000
Expense related to investments	672,000,000	698,000,000	771,000,000
Investment tax credits	1,400,000,000	1,200,000,000	937,000,000
Expenses related to investments recognized in tax expense	251,000,000	261,000,000	$ 258,000,000
Investment carrying amount	5,009,000,000	5,257,000,000
Maximum exposure to loss	10,373,000,000	9,436,000,000
Assets related to consolidated VIEs	3,500,000,000	3,000,000,000
Liabilities related to consolidated VIEs	2,600,000,000	2,200,000,000
Conduit [Member]
Variable Interest Entity [Line Items]
Assets related to consolidated VIEs	24,000,000	28,000,000
Tender Option Bond Program [Member]
Variable Interest Entity [Line Items]
Assets related to consolidated VIEs	1,100,000,000	2,300,000,000
Liabilities related to consolidated VIEs	$ 1,100,000,000	$ 2,200,000,000

Accounting for Transfers and 94

Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities - Summary of Investments in Community Development and Tax-advantaged VIEs (Detail) - Community Development and Tax Advantaged Investments [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Investment carrying amount	$ 5,009	$ 5,257
Unfunded capital and other commitments	2,477	2,499
Maximum exposure to loss	$ 10,373	$ 9,436

Premises and Equipment - Premis

Premises and Equipment - Premises and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Gross Premises and Equipment	$ 6,851	$ 6,723
Less accumulated depreciation and amortization	(4,408)	(4,210)
Total Premises and Equipment	2,443	2,513
Land [Member]
Property, Plant and Equipment [Line Items]
Gross Premises and Equipment	516	522
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross Premises and Equipment	3,383	3,348
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross Premises and Equipment	2,798	2,721
Capitalized Building and Equipment Leases [Member]
Property, Plant and Equipment [Line Items]
Gross Premises and Equipment	125	113
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross Premises and Equipment	$ 29	$ 19

Mortgage Servicing Rights - Add

Mortgage Servicing Rights - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Transfers and Servicing of Financial Assets [Abstract]
Residential mortgage loans serviced for others including subserviced mortgages with no corresponding MSRs asset	$ 232,600	$ 231,800
Gain (Loss) on fair value changes of MSRs due to changes in valuation assumptions and derivatives used to economically hedge MSRs	7	23	$ 241
Loan servicing and ancillary fees	$ 750	$ 728	732
Gain related to excess servicing rights sold			$ 44

Mortgage Servicing Rights - Cha

Mortgage Servicing Rights - Changes in Fair Value of Capitalized MSRs (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Transfers and Servicing of Financial Assets [Abstract]
Balance at beginning of period	$ 2,512	$ 2,338	$ 2,680
Rights purchased	43	29	5
Rights capitalized	524	632	382
Rights sold			(141)
Changes in fair value of MSRs
Due to fluctuations in market interest rates	(55)	(58)	(276)
Due to revised assumptions or models	19	10	86
Other changes in fair value	(452)	(439)	(398)
Balance at end of period	$ 2,591	$ 2,512	$ 2,338

Mortgage Servicing Rights - C98

Mortgage Servicing Rights - Changes in Fair Value of Capitalized MSRs (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2014USD ($)
Transfers and Servicing of Financial Assets [Abstract]
Gain related to excess servicing rights sold	$ 44

Mortgage Servicing Rights - Sen

Mortgage Servicing Rights - Sensitivity to Changes in Interest Rates of the Fair Value of MSRs Portfolio and Related Derivative Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Down Scenario [Member] | Mortgage Servicing Rights [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Net fair value 100 basis points	$ (476)	$ (598)
Net fair value 50 basis points	(209)	(250)
Net fair value 25 basis points	(98)	(114)
Down Scenario [Member] | Derivative [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Net fair value 100 basis points	375	475
Net fair value 50 basis points	180	226
Net fair value 25 basis points	88	107
Down Scenario [Member] | Net Sensitivity [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Net fair value 100 basis points	(101)	(123)
Net fair value 50 basis points	(29)	(24)
Net fair value 25 basis points	(10)	(7)
Up Scenario [Member] | Mortgage Servicing Rights [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Net fair value 100 basis points	270	344
Net fair value 50 basis points	159	176
Net fair value 25 basis points	85	96
Up Scenario [Member] | Derivative [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Net fair value 100 basis points	(314)	(377)
Net fair value 50 basis points	(165)	(192)
Net fair value 25 basis points	(84)	(98)
Up Scenario [Member] | Net Sensitivity [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Net fair value 100 basis points	(44)	(33)
Net fair value 50 basis points	(6)	(16)
Net fair value 25 basis points	$ 1	$ (2)

Mortgage Servicing Rights - MSR

Mortgage Servicing Rights - MSRs and Related Characteristics by Portfolio (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)BasisPointMultiple	Dec. 31, 2015USD ($)BasisPointMultiple	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Servicing Assets at Fair Value [Line Items]
Fair value	$ 2,591	$ 2,512	$ 2,338	$ 2,680
Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Servicing portfolio	230,047	229,375
Fair value	$ 2,591	$ 2,512
Value (bps) | BasisPoint	113	110
Weighted-average servicing fees (bps) | BasisPoint	30	29
Multiple (value/servicing fees) | Multiple	3.77	3.79
Weighted-average note rate	4.06%	4.13%
Weighted-average age (in years)	3 years 8 months 12 days	3 years 4 months 24 days
Weighted-average expected prepayment (constant prepayment rate)	10.00%	11.30%
Weighted-average expected life (in years)	7 years	6 years 4 months 24 days
Weighted-average option adjusted spread or discount rate	8.00%	10.00%
HFA [Member] | Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Servicing portfolio	$ 34,746	$ 26,492
Fair value	$ 398	$ 297
Value (bps) | BasisPoint	115	112
Weighted-average servicing fees (bps) | BasisPoint	36	36
Multiple (value/servicing fees) | Multiple	3.19	3.11
Weighted-average note rate	4.37%	4.46%
Weighted-average age (in years)	2 years 10 months 24 days	3 years 1 month 6 days
Weighted-average expected prepayment (constant prepayment rate)	9.40%	12.80%
Weighted-average expected life (in years)	8 years	6 years 1 month 6 days
Weighted-average option adjusted spread or discount rate	9.90%	11.80%
Government [Member] | Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Servicing portfolio	$ 37,530	$ 40,350
Fair value	$ 422	$ 443
Value (bps) | BasisPoint	112	110
Weighted-average servicing fees (bps) | BasisPoint	34	34
Multiple (value/servicing fees) | Multiple	3.29	3.24
Weighted-average note rate	3.95%	4.08%
Weighted-average age (in years)	3 years 9 months 18 days	3 years 7 months 6 days
Weighted-average expected prepayment (constant prepayment rate)	11.30%	13.90%
Weighted-average expected life (in years)	6 years 9 months 18 days	5 years 8 months 12 days
Weighted-average option adjusted spread or discount rate	9.20%	11.20%
Conventional [Member] | Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Servicing portfolio	$ 157,771	$ 162,533
Fair value	$ 1,771	$ 1,772
Value (bps) | BasisPoint	112	109
Weighted-average servicing fees (bps) | BasisPoint	27	27
Multiple (value/servicing fees) | Multiple	4.15	4.04
Weighted-average note rate	4.02%	4.09%
Weighted-average age (in years)	3 years 9 months 18 days	3 years 4 months 24 days
Weighted-average expected prepayment (constant prepayment rate)	9.80%	10.40%
Weighted-average expected life (in years)	6 years 10 months 24 days	6 years 7 months 6 days
Weighted-average option adjusted spread or discount rate	7.20%	9.40%

Intangible Assets - Intangible

Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 9,344	$ 9,361	$ 9,389	$ 9,205
Mortgage servicing rights	2,591	2,512	$ 2,338	$ 2,680
Total	$ 12,647	12,711
Merchant Processing Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Method	SL/AC
Finite-Lived Intangible Assets	$ 108	135
Core Deposit Benefits [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Method	SL/AC
Finite-Lived Intangible Assets	$ 161	194
Trust Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Method	SL/AC
Finite-Lived Intangible Assets	$ 59	75
Other Identified Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Method	SL/AC
Finite-Lived Intangible Assets	$ 384	$ 434
Straight line method [Member] | Merchant Processing Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	7 years
Straight line method [Member] | Core Deposit Benefits [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	22 years
Straight line method [Member] | Trust Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	10 years
Straight line method [Member] | Other Identified Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	8 years
Accelerated method [Member] | Merchant Processing Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	8 years
Accelerated method [Member] | Core Deposit Benefits [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Accelerated method [Member] | Trust Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	6 years
Accelerated method [Member] | Other Identified Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life	4 years

Intangible Assets - Aggregate A

Intangible Assets - Aggregate Amortization Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	$ 179	$ 174	$ 199
Merchant Processing Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	28	35	50
Core Deposit Benefits [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	34	40	38
Trust Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	16	21	27
Other Identified Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	$ 101	$ 78	$ 84

Intangible Assets - Estimated A

Intangible Assets - Estimated Amortization Expense (Detail) $ in Millions	Dec. 31, 2016USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	$ 171
2,018	138
2,019	109
2,020	86
2,021	$ 65

Intangible Assets - Changes in

Intangible Assets - Changes in Carrying Value of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 9,361	$ 9,389	$ 9,205
Goodwill acquired			217
Foreign exchange translation and other	(17)	(28)	(33)
Goodwill, Ending Balance	9,344	9,361	9,389
Wholesale Banking and Commercial Real Estate [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,647	1,648	1,605
Goodwill acquired			43
Foreign exchange translation and other		(1)
Goodwill, Ending Balance	1,647	1,647	1,648
Consumer and Small Business Banking [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	3,681	3,680	3,514
Goodwill acquired			166
Foreign exchange translation and other		1
Goodwill, Ending Balance	3,681	3,681	3,680
Wealth Management and Securities Services [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,567	1,570	1,565
Goodwill acquired			8
Foreign exchange translation and other	(1)	(3)	(3)
Goodwill, Ending Balance	1,566	1,567	1,570
Payment Services [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	2,466	2,491	2,521
Foreign exchange translation and other	(16)	(25)	(30)
Goodwill, Ending Balance	$ 2,450	$ 2,466	$ 2,491

Deposits - Composition of Depos

Deposits - Composition of Deposits (Detail) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
Noninterest-bearing deposits		$ 86,097	$ 83,766
Interest-bearing deposits
Interest checking		66,298	59,169
Money market savings		109,947	86,159
Savings accounts		41,783	38,468
Time deposits		30,465	32,838
Total interest-bearing deposits	[1]	248,493	216,634
Total deposits		$ 334,590	$ 300,400
[1]	lncludes time deposits greater than $250,000 balances of $3.0 billion and $2.6 billion at December 31, 2016 and 2015, respectively.

Deposits - Maturities of Time D

Deposits - Maturities of Time Deposits Outstanding (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
2,017	$ 23,428
2,018	3,019
2,019	1,601
2,020	1,267
2,021	1,147
Thereafter	3
Total	$ 30,465	$ 32,838

Short-Term Borrowings - Summary

Short-Term Borrowings - Summary of Short-Term Borrowings (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Short-term borrowings	$ 13,963	$ 27,877	$ 29,893
Short-term borrowings, interest rate, at year end	0.43%	0.27%	0.19%
Short-term borrowings, average for the year	$ 19,906	$ 27,960	$ 30,252
Short-term borrowings, interest rate, average for the year	1.34%	0.89%	0.88%
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Short-term borrowings	$ 447	$ 647	$ 886
Short-term borrowings, interest rate, at year end	0.30%	0.23%	0.12%
Short-term borrowings, average for the year	$ 1,015	$ 1,169	$ 2,366
Short-term borrowings, interest rate, average for the year	17.17%	15.05%	7.94%
Short-term borrowings, maximum month end balance	$ 2,487	$ 1,868	$ 3,258
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Short-term borrowings	$ 801	$ 1,092	$ 948
Short-term borrowings, interest rate, at year end	0.12%	0.02%	0.05%
Short-term borrowings, average for the year	$ 891	$ 973	$ 798
Short-term borrowings, interest rate, average for the year	0.18%	0.10%	1.07%
Short-term borrowings, maximum month end balance	$ 1,177	$ 1,124	$ 948
Commercial Paper [Member]
Short-term Debt [Line Items]
Short-term borrowings	$ 10,010	$ 22,022	$ 22,197
Short-term borrowings, interest rate, at year end	0.30%	0.21%	0.12%
Short-term borrowings, average for the year	$ 14,827	$ 21,892	$ 21,227
Short-term borrowings, interest rate, average for the year	0.26%	0.12%	0.12%
Short-term borrowings, maximum month end balance	$ 21,441	$ 23,101	$ 22,322
Other Short-Term Borrowings [Member]
Short-term Debt [Line Items]
Short-term borrowings	$ 2,705	$ 4,116	$ 5,862
Short-term borrowings, interest rate, at year end	1.00%	0.69%	0.51%
Short-term borrowings, average for the year	$ 3,173	$ 3,926	$ 5,861
Short-term borrowings, interest rate, average for the year	1.67%	1.13%	0.78%
Short-term borrowings, maximum month end balance	$ 6,771	$ 7,656	$ 7,417

Short-Term Borrowings - Summ108

Short-Term Borrowings - Summary of Short-Term Borrowings (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Abstract]
Federal statutory rate	35.00%
Compensation expense included in federal funds purchased and short-term borrowings rates	$ 171	$ 175	$ 186

Long-Term Debt - Summary of Lon

Long-Term Debt - Summary of Long-term Debt (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt	$ 33,323	$ 32,078
Parent Company [Member]
Debt Instrument [Line Items]
Long-term debt	13,045	11,453
Parent Company [Member] | Other Debt Issuance Fees and Unrealized Gains and Losses and Deferred Amounts Relating to Derivative Instruments [Member]
Debt Instrument [Line Items]
Long-term debt	(4)	204
Subsidiaries [Member]
Debt Instrument [Line Items]
Long-term debt	20,278	20,625
Subsidiaries [Member] | Other Consolidated Community Development and Tax-Advantaged Investment Vies, Capitalized Lease Obligations, Debt Issuance Fees, and Unrealized Gains and Losses and Deferred Amounts Relating to Derivative Instruments [Member]
Debt Instrument [Line Items]
Long-term debt	$ 1,011	755
Fixed Rate [Member] | Parent Company [Member] | Medium-term Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Year, start	Jan. 1, 2017
Debt Instrument Maturity Year, End	Dec. 31, 2026
Long-term debt	$ 8,800	7,500
Fixed Rate [Member] | Parent Company [Member] | Medium-term Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.65%
Fixed Rate [Member] | Parent Company [Member] | Medium-term Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.125%
Fixed Rate [Member] | Parent Company [Member] | Subordinated Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.95%
Debt Instrument Maturity Year, start	Jan. 1, 2022
Debt Instrument Maturity Year, End	Dec. 31, 2022
Long-term debt	$ 1,300	1,300
Fixed Rate [Member] | Parent Company [Member] | Subordinated Debt One [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.60%
Debt Instrument Maturity Year, start	Jan. 1, 2024
Debt Instrument Maturity Year, End	Dec. 31, 2024
Long-term debt	$ 1,000	1,000
Fixed Rate [Member] | Parent Company [Member] | Subordinated Notes Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
Debt Instrument Maturity Year, start	Jan. 1, 2026
Debt Instrument Maturity Year, End	Dec. 31, 2026
Long-term debt	$ 199	199
Fixed Rate [Member] | Parent Company [Member] | Subordinated Notes Three [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.10%
Debt Instrument Maturity Year, start	Jan. 1, 2026
Debt Instrument Maturity Year, End	Dec. 31, 2026
Long-term debt	$ 1,000
Fixed Rate [Member] | Parent Company [Member] | Junior Subordinated Debentures [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.442%
Debt Instrument Maturity Year, start	Jan. 1, 2016
Debt Instrument Maturity Year, End	Dec. 31, 2016
Long-term debt		500
Fixed Rate [Member] | Subsidiaries [Member] | Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Year, start	Jan. 1, 2017
Debt Instrument Maturity Year, End	Dec. 31, 2026
Long-term debt	$ 10	11
Fixed Rate [Member] | Subsidiaries [Member] | Federal Home Loan Bank Advances [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.25%
Fixed Rate [Member] | Subsidiaries [Member] | Federal Home Loan Bank Advances [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.25%
Fixed Rate [Member] | Subsidiaries [Member] | Bank Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Year, start	Jan. 1, 2017
Debt Instrument Maturity Year, End	Dec. 31, 2025
Long-term debt	$ 6,800	5,850
Fixed Rate [Member] | Subsidiaries [Member] | Bank Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.35%
Fixed Rate [Member] | Subsidiaries [Member] | Bank Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.80%
Floating Rate [Member] | Parent Company [Member] | Medium-term Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Year, start	Jan. 1, 2018
Debt Instrument Maturity Year, End	Dec. 31, 2019
Long-term debt	$ 750	750
Floating Rate [Member] | Parent Company [Member] | Medium-term Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.282%
Floating Rate [Member] | Parent Company [Member] | Medium-term Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.396%
Floating Rate [Member] | Subsidiaries [Member] | Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Year, start	Jan. 1, 2017
Debt Instrument Maturity Year, End	Dec. 31, 2026
Long-term debt	$ 8,559	9,081
Floating Rate [Member] | Subsidiaries [Member] | Federal Home Loan Bank Advances [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.866%
Floating Rate [Member] | Subsidiaries [Member] | Federal Home Loan Bank Advances [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.447%
Floating Rate [Member] | Subsidiaries [Member] | Bank Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Year, start	Jan. 1, 2017
Debt Instrument Maturity Year, End	Dec. 31, 2056
Long-term debt	$ 3,898	$ 4,928
Floating Rate [Member] | Subsidiaries [Member] | Bank Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.582%
Floating Rate [Member] | Subsidiaries [Member] | Bank Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.467%

Long-Term Debt - Summary of 110

Long-Term Debt - Summary of Long-term Debt (Parenthetical) (Detail)	Dec. 31, 2016
Medium-term Notes [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	2.48%
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.17%
Bank Notes [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.57%

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($) $ in Billions	Dec. 31, 2016	Dec. 31, 2015
Federal Home Loan Bank and Federal Reserve Bank [Member]
Debt Instrument [Line Items]
Unused Borrowing Capacity under Federal Home Loan Bank and Federal Reserve Bank	$ 91.4	$ 74.9

Long-Term Debt - Maturities of

Long-Term Debt - Maturities of Long-term Debt Outstanding (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
2,017	$ 5,461
2,018	7,282
2,019	6,019
2,020	43
2,021	2,221
Thereafter	12,297
Total	33,323	$ 32,078
Parent Company [Member]
Debt Instrument [Line Items]
2,017	1,250
2,018	1,498
2,019	1,503
2,021	2,195
Thereafter	6,599
Total	$ 13,045	$ 11,453

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2006
Class of Stock [Line Items]
Number of common stock shares authorized	4,000,000,000	4,000,000,000
Number of preferred stock shares authorized	50,000,000	50,000,000
Number of common stock shares outstanding	1,700,000,000	1,700,000,000
Number of common stock shares reserved for future issuance	67,000,000
Remaining authorized share repurchase amount	$ 1,300
Preferred stock outstanding	189,910	189,910
Series H [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued			20,000
Liquidation preference per share			$ 25,000
Preferred stock dividend rate fixed percentage			5.15%
Redemption period of preferred stock			90 days
Preferred stock redemption date			Jul. 15, 2018
Preferred stock outstanding	20,000	20,000
Series F [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued				44,000
Liquidation preference per share				$ 25,000
Preferred stock dividend rate variable percentage				4.468%
Preferred stock dividend rate fixed percentage				6.50%
Redemption period of preferred stock				90 days
Preferred stock redemption date				Jan. 15, 2022
Preferred stock dividend rate period	Three-month LIBOR plus
Preferred stock outstanding	44,000	44,000
Series G [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued				43,400
Liquidation preference per share				$ 25,000
Preferred stock dividend rate variable percentage				4.86125%
Preferred stock dividend rate fixed percentage				6.00%
Redemption period of preferred stock				90 days
Preferred stock redemption date				Apr. 15, 2017
Preferred stock dividend rate period	Three-month LIBOR plus
Preferred stock outstanding	43,400	43,400
Series A [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued					6,764	5,746
Liquidation preference per share					$ 100,000	$ 100,000
Preferred stock dividend rate variable percentage					1.02%	1.02%
Preferred stock dividend rate fixed percentage					3.50%	3.50%
Preferred stock dividend rate period	Three-month LIBOR plus
Preferred stock outstanding	12,510	12,510
Series A [Member] | Noncontrolling Interests [Member]
Class of Stock [Line Items]
Liquidation preference per share							$ 100,000
Preferred stock dividend rate variable percentage							1.147%
Preferred stock dividend rate period	Three-month LIBOR plus
Minority interest preferred stock, shares issued							5,000
Number of stock repurchased during period	500
Gain due to repurchase of preferred stock	$ 9
Preferred stock outstanding	4,500
Series B [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued							40,000
Liquidation preference per share							$ 25,000
Preferred stock dividend rate variable percentage							0.60%
Preferred stock dividend rate fixed percentage							3.50%
Preferred stock dividend rate period	Three-month LIBOR plus
Preferred stock outstanding	40,000	40,000
Series I [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued		30,000
Liquidation preference per share		$ 25,000
Preferred stock dividend rate variable percentage		3.486%
Preferred stock dividend rate fixed percentage		5.125%
Redemption period of preferred stock		90 days
Preferred stock redemption date		Jan. 15, 2021
Preferred stock dividend rate period	Three-month LIBOR plus
Preferred stock outstanding	30,000	30,000

Shareholders' Equity - Number o

Shareholders' Equity - Number of Shares Issued and Outstanding and Carrying Amount of Preferred Stock (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Shares Issued and Outstanding	189,910	189,910
Liquidation Preference	$ 5,686	$ 5,686
Discount	185	185
Carrying Amount	$ 5,501	$ 5,501
Series A [Member]
Class of Stock [Line Items]
Shares Issued and Outstanding	12,510	12,510
Liquidation Preference	$ 1,251	$ 1,251
Discount	145	145
Carrying Amount	$ 1,106	$ 1,106
Series B [Member]
Class of Stock [Line Items]
Shares Issued and Outstanding	40,000	40,000
Liquidation Preference	$ 1,000	$ 1,000
Carrying Amount	$ 1,000	$ 1,000
Series F [Member]
Class of Stock [Line Items]
Shares Issued and Outstanding	44,000	44,000
Liquidation Preference	$ 1,100	$ 1,100
Discount	12	12
Carrying Amount	$ 1,088	$ 1,088
Series G [Member]
Class of Stock [Line Items]
Shares Issued and Outstanding	43,400	43,400
Liquidation Preference	$ 1,085	$ 1,085
Discount	10	10
Carrying Amount	$ 1,075	$ 1,075
Series H [Member]
Class of Stock [Line Items]
Shares Issued and Outstanding	20,000	20,000
Liquidation Preference	$ 500	$ 500
Discount	13	13
Carrying Amount	$ 487	$ 487
Series I [Member]
Class of Stock [Line Items]
Shares Issued and Outstanding	30,000	30,000
Liquidation Preference	$ 750	$ 750
Discount	5	5
Carrying Amount	$ 745	$ 745

Shareholders' Equity - Numbe115

Shareholders' Equity - Number of Shares Issued and Outstanding and Carrying Amount of Preferred Stock (Parenthetical) (Detail) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Equity [Abstract]
Preferred stock, par value	$ 1	$ 1

Shareholders' Equity - Common S

Shareholders' Equity - Common Stock Repurchased (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Common stock repurchased shares	61	52	54
Purchase of treasury stock	$ 2,600	$ 2,246	$ 2,262

Shareholders' Equity - Reconcil

Shareholders' Equity - Reconciliation of Transactions Affecting Accumulated Other Comprehensive Income (Loss) Included in Shareholders' Equity (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (1,019)	$ (896)	$ (1,071)
Changes in unrealized gains and losses	(858)	(457)	764
Changes in unrealized gains and losses	74	(25)	(41)
Changes in unrealized gains and losses	(255)	(142)	(733)
Changes in unrealized gains and losses	(1,039)	(624)	(10)
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	(1)		1
Foreign currency translation adjustment	(28)	20	(4)
Reclassification to earnings of realized gains and losses	247	393	297
Applicable income taxes	305	88	(109)
Balance at end of period	(1,535)	(1,019)	(896)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(43)	(62)	(60)
Foreign currency translation adjustment	(28)	20	(4)
Applicable income taxes		(1)	2
Balance at end of period	(71)	(43)	(62)
Unrealized Gains (Losses) on Retirement Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(1,056)	(1,106)	(743)
Changes in unrealized gains and losses	(255)	(142)	(733)
Reclassification to earnings of realized gains and losses	163	223	144
Applicable income taxes	35	(31)	226
Balance at end of period	(1,113)	(1,056)	(1,106)
Unrealized Gains (Losses) on Derivative Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(67)	(172)	(261)
Changes in unrealized gains and losses	74	(25)	(41)
Reclassification to earnings of realized gains and losses	124	195	186
Applicable income taxes	(76)	(65)	(56)
Balance at end of period	55	(67)	(172)
Unrealized Gains (Losses) on Securities Transferred From Available For Sale to Held To Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	36	52	70
Reclassification to earnings of realized gains and losses	(18)	(25)	(30)
Applicable income taxes	7	9	12
Balance at end of period	25	36	52
Unrealized Gains (Losses) on Securities Available-For-Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	111	392	(77)
Changes in unrealized gains and losses	(858)	(457)	764
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	(1)		1
Reclassification to earnings of realized gains and losses	(22)		(3)
Applicable income taxes	339	176	(293)
Balance at end of period	$ (431)	$ 111	$ 392

Shareholders' Equity - Impact t

Shareholders' Equity - Impact to Net Income for Items Reclassified out of Accumulated Other Comprehensive Income and into Earnings (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains (losses) on sale of securities	$ 27	$ 1	$ 11
Amortization of unrealized gains on securities transferred from available-for-sale to held-to-maturity, Interest income	13,167	12,402	12,228
Realized gains (losses) on derivative hedges	11,528	11,001	10,775
Actuarial gains (losses), prior service cost (credit) and transition obligation (asset) amortization	(1,119)	(1,167)	(1,041)
Total securities gains (losses), net	22		3
Applicable income taxes	(2,161)	(2,097)	(2,087)
Net income	5,944	5,933	5,908
Reclassification Out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(152)	(242)	(183)
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Securities Available-For-Sale [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains (losses) on sale of securities	27	1	11
Other-than-temporary impairment recognized in earnings	(5)	(1)	(8)
Total securities gains (losses), net	22		3
Applicable income taxes	(9)		(1)
Net income	13		2
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Securities Transferred From Available For Sale to Held To Maturity [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrealized gains on securities transferred from available-for-sale to held-to-maturity, Interest income	18	25	30
Applicable income taxes	(7)	(9)	(12)
Net income	11	16	18
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Derivative Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains (losses) on derivative hedges	(124)	(195)	(186)
Applicable income taxes	48	75	71
Net income	(76)	(120)	(115)
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Retirement Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial gains (losses), prior service cost (credit) and transition obligation (asset) amortization	(163)	(223)	(144)
Applicable income taxes	63	85	56
Net income	$ (100)	$ (138)	$ (88)

Shareholders' Equity - Componen

Shareholders' Equity - Components of Company's Regulatory Capital (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Less intangible assets
Qualifying preferred stock	$ 5,501	$ 5,501
Basel III Transitional Standardized Approach: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common shareholders' equity	41,797	40,630
Less intangible assets
Goodwill (net of deferred tax liability)	(8,203)	(8,295)
Other disallowed intangible assets	(427)	(335)
Other	553	612
Total common equity tier 1 capital	33,720	32,612
Qualifying preferred stock	5,501	5,501
Noncontrolling interests eligible for tier 1 capital	203	318
Other	(3)
Total tier 1 capital	39,421	38,431
Eligible portion of allowance for credit losses	4,357	4,255
Subordinated debt and noncontrolling interests eligible for tier 2 capital	3,576	2,616
Other	1	11
Total tier 2 capital	7,934	6,882
Total risk-based capital	47,355	45,313
Risk-weighted assets	358,237	341,360
Basel III transitional advanced approaches: [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common shareholders' equity	41,797	40,630
Less intangible assets
Goodwill (net of deferred tax liability)	(8,203)	(8,295)
Other disallowed intangible assets	(427)	(335)
Other	553	612
Total common equity tier 1 capital	33,720	32,612
Qualifying preferred stock	5,501	5,501
Noncontrolling interests eligible for tier 1 capital	203	318
Other	(3)
Total tier 1 capital	39,421	38,431
Eligible portion of allowance for credit losses	1,266	1,204
Subordinated debt and noncontrolling interests eligible for tier 2 capital	3,576	2,616
Other	1	11
Total tier 2 capital	4,843	3,831
Total risk-based capital	44,264	42,262
Risk-weighted assets	$ 277,141	$ 261,668

Earnings Per Share - Components

Earnings Per Share - Components of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income attributable to U.S. Bancorp	$ 5,888	$ 5,879	$ 5,851
Preferred dividends	(281)	(247)	(243)
Impact of the purchase of noncontrolling interests	9
Earnings allocated to participating stock awards	(27)	(24)	(25)
Net income applicable to U.S. Bancorp common shareholders	$ 5,589	$ 5,608	$ 5,583
Average common shares outstanding	1,718	1,764	1,803
Net effect of the exercise and assumed purchase of stock awards	6	8	10
Average diluted common shares outstanding	1,724	1,772	1,813
Earnings per common share	$ 3.25	$ 3.18	$ 3.10
Diluted earnings per common share	$ 3.24	$ 3.16	$ 3.08

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options outstanding of common shares	1	1

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Qualified employees maximum contribution to defined contribution savings plan allowed in percentage of annual compensation	75.00%
Company contribution to defined savings plan	4.00%
Company contribution, percentage company contribution matches of the employee's percentage contribution matched	100.00%
Employee retirement savings plan matching expenses	$ 142	$ 131	$ 122
Vesting service period for defined benefit pension plan	3 years
Plan assets of the qualified pension plans that have asset management arrangements with related parties	$ 48	63
Global Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation for the company's qualified pension plan	43.00%
Domestic Mid-Small Cap Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation for the company's qualified pension plan	7.00%
Emerging Markets Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation for the company's qualified pension plan	5.00%
Real Estate Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation for the company's qualified pension plan	5.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation for the company's qualified pension plan	30.00%
Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation for the company's qualified pension plan	5.00%
Private Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation for the company's qualified pension plan	5.00%
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions to qualified pension and postretirement welfare plan	$ 358	414
Company contributions to pension and postretirement welfare plan in next fiscal year	185
Non Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions to pension and postretirement welfare plan in next fiscal year	22
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions to qualified pension and postretirement welfare plan	7	$ 8
Company contributions to pension and postretirement welfare plan in next fiscal year	$ 6

Employee Benefits - Summary of

Employee Benefits - Summary of Changes in Projected Benefit Obligation, Plan Assets, Funded Status, Amounts Recognized in Consolidated Balance Sheet and Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Plans [Member]
Change In Projected Benefit Obligation
Benefit obligation at beginning of measurement period	$ 4,650	$ 4,612
Service cost	177	188	$ 152
Interest cost	211	195	197
Actuarial loss (gain)	234	(176)
Lump sum settlements	(61)	(37)
Benefit payments	(138)	(132)
Benefit obligation at end of measurement period	5,073	4,650	4,612
Change In Fair Value Of Plan Assets
Balance at beginning of period	3,355	3,187
Actual return on plan assets	230	(99)
Employer contributions	383	436
Lump sum settlements	(61)	(37)
Benefit payments	(138)	(132)
Balance at end of period	3,769	3,355	3,187
Funded (Unfunded) Status	(1,304)	(1,295)
Current benefit liability	(22)	(21)
Noncurrent benefit liability	(1,282)	(1,274)
Recognized amount	(1,304)	(1,295)
Net actuarial gain (loss)	(1,901)	(1,806)
Net prior service credit (cost)	2	7
Recognized amount	(1,899)	(1,799)
Postretirement Welfare Plan [Member]
Change In Projected Benefit Obligation
Benefit obligation at beginning of measurement period	93	104
Interest cost	3	3	3
Participants' contributions	10	10
Actuarial loss (gain)	(14)	(5)
Benefit payments	(19)	(21)
Federal subsidy on benefits paid	2	2
Benefit obligation at end of measurement period	75	93	104
Change In Fair Value Of Plan Assets
Balance at beginning of period	82	85
Actual return on plan assets	2
Employer contributions	7	8
Participants' contributions	10	10
Benefit payments	(19)	(21)
Balance at end of period	82	82	$ 85
Funded (Unfunded) Status	7	(11)
Noncurrent benefit asset	7
Noncurrent benefit liability		(11)
Recognized amount	7	(11)
Net actuarial gain (loss)	66	55
Net prior service credit (cost)	25	28
Recognized amount	$ 91	$ 83

Employee Benefits - Summary 124

Employee Benefits - Summary of Changes in Projected Benefit Obligation, Plan Assets, Funded Status, Amounts Recognized in Consolidated Balance Sheet and Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($) $ in Billions	Dec. 31, 2016	Dec. 31, 2015
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation for all pension plans	$ 4.6	$ 4.3

Employee Benefits - Pension Pla

Employee Benefits - Pension Plans with Benefit Obligations in Excess of Plan Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Pension Plans with Projected Benefit Obligations in Excess of Plan Assets
Projected benefit obligation	$ 5,073	$ 4,650
Fair value of plan assets	3,769	3,355
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets
Projected benefit obligation	5,073	4,650
Accumulated benefit obligation	4,625	4,310
Fair value of plan assets	$ 3,769	$ 3,355

Employee Benefits - Components

Employee Benefits - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Plans [Member]
Components Of Net Periodic Benefit Cost
Service cost	$ 177	$ 188	$ 152
Interest cost	211	195	197
Expected return on plan assets	(266)	(223)	(208)
Prior service cost (credit) and transition obligation (asset) amortization	(5)	(4)	(5)
Actuarial loss (gain) amortization	175	234	158
Net periodic benefit cost	292	390	294
Net actuarial gain (loss) arising during the year	(270)	(146)	(719)
Net actuarial loss (gain) amortized during the year	175	234	158
Net prior service cost (credit) and transition obligation (asset) amortized during the year	(5)	(4)	(5)
Total recognized in other comprehensive income (loss)	(100)	84	(566)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(392)	(306)	(860)
Postretirement Welfare Plan [Member]
Components Of Net Periodic Benefit Cost
Interest cost	3	3	3
Expected return on plan assets	(1)	(1)	(1)
Prior service cost (credit) and transition obligation (asset) amortization	(3)	(3)	(3)
Actuarial loss (gain) amortization	(4)	(4)	(6)
Net periodic benefit cost	(5)	(5)	(7)
Net actuarial gain (loss) arising during the year	15	4	(14)
Net actuarial loss (gain) amortized during the year	(4)	(4)	(6)
Net prior service cost (credit) and transition obligation (asset) amortized during the year	(3)	(3)	(3)
Total recognized in other comprehensive income (loss)	8	(3)	(23)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ 13	$ 2	$ (16)

Employee Benefits - Componen127

Employee Benefits - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Pretax estimated actuarial loss (gain) that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost	$ 127
Pretax estimated prior service cost (credit) for pension plan that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost	(2)
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pretax estimated actuarial loss (gain) that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost	(6)
Pretax estimated prior service cost (credit) for pension plan that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost	$ (3)

Employee Benefits - Weighted Av

Employee Benefits - Weighted Average Assumptions to Determine Projected Benefit Obligations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Effect on accumulated postretirement benefit obligation
One percent increase	$ 4	$ 5
One percent decrease	$ (4)	$ (5)
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.27%	4.45%
Rate of compensation increase	3.58%	4.06%
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.57%	3.59%
Rate of compensation increase	0.00%	0.00%
Projected Benefit Obligation Assumptions [Member]
Health care cost trend rate for the next year
Health care cost trend rate assumed for next fiscal year	7.00%	6.50%

Employee Benefits - Weighted129

Employee Benefits - Weighted Average Assumptions to Determine Projected Benefit Obligations (Parenthetical) (Detail) - Projected Benefit Obligation Assumptions [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Assumed rate decrease	5.00%	5.00%
Health care cost trend rate to decrease Period	2,025	2,019
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed plan duration	6 years 2 months 12 days	6 years 3 months 18 days
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed plan duration	15 years 6 months	15 years
Non Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed plan duration	12 years 1 month 6 days	11 years 10 months 24 days

Employee Benefits - Weighted130

Employee Benefits - Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Health care cost trend rate
One percent increase	$ 0	$ 0	$ 0
One percent decrease	$ 0	$ 0	$ 0
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.45%	4.13%	4.97%
Expected return on plan assets	7.50%	7.50%	7.50%
Rate of compensation increase	4.06%	4.07%	4.02%
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.59%	3.46%	3.93%
Expected return on plan assets	1.50%	1.50%	1.50%
Prior to Age 65 [Member] | Net Periodic Benefit Cost Assumptions [Member]
Health care cost trend rate
Health care cost trend rate	6.50%	7.00%	7.50%
After Age 65 [Member] | Net Periodic Benefit Cost Assumptions [Member]
Health care cost trend rate
Health care cost trend rate	6.50%	7.00%	7.50%

Employee Benefits - Weighted131

Employee Benefits - Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost (Parenthetical) (Detail) - Net Periodic Benefit Cost Assumptions [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Prior to Age 65 [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed rate decrease	5.00%
Health care cost trend rate to decrease Period	2,019
After Age 65 [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed rate decrease	5.00%
Health care cost trend rate to decrease Period	2,019
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed plan duration	6 years 3 months 18 days	6 years 9 months 18 days
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed plan duration	15 years	15 years 10 months 24 days
Non Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed plan duration	11 years 10 months 24 days	12 years 4 months 24 days

Employee Benefits - Summary 132

Employee Benefits - Summary of Plan Investment Assets Measured at Fair Value (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Level 3 [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	$ 1	$ 1	$ 2	$ 4
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	3,769	3,355	3,187
Plan assets measured at fair value, excluding assets not classified in fair hierarchy	1,477	1,779
Pension Plans [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	49	64
Pension Plans [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	939	826
Pension Plans [Member] | Domestic Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		178
Pension Plans [Member] | Mid Small Cap Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		146
Pension Plans [Member] | International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		123
Pension Plans [Member] | Real Estate Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	169	163
Pension Plans [Member] | Collective Investment Funds Domestic Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	977	679
Pension Plans [Member] | Collective Investment Fund Mid-Small Cap Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	303	68
Pension Plans [Member] | Collective Investment Fund Emerging Markets Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		75
Pension Plans [Member] | Collective Investment Funds International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	725	533
Pension Plans [Member] | Debt Securities Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	164	197
Pension Plans [Member] | Emerging Markets Equity Mutual Fund Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	155	81
Pension Plans [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	188	171
Pension Plans [Member] | Private Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	99	50
Pension Plans [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	1	1
Pension Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value, excluding assets not classified in fair hierarchy	580	1,035
Pension Plans [Member] | Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	49	64
Pension Plans [Member] | Level 1 [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	362	361
Pension Plans [Member] | Level 1 [Member] | Domestic Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		178
Pension Plans [Member] | Level 1 [Member] | Mid Small Cap Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		146
Pension Plans [Member] | Level 1 [Member] | International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		123
Pension Plans [Member] | Level 1 [Member] | Real Estate Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	169	163
Pension Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value, excluding assets not classified in fair hierarchy	896	743
Pension Plans [Member] | Level 2 [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	577	465
Pension Plans [Member] | Level 2 [Member] | Debt Securities Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	164	197
Pension Plans [Member] | Level 2 [Member] | Emerging Markets Equity Mutual Fund Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	155	81
Pension Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value, excluding assets not classified in fair hierarchy	1	1
Pension Plans [Member] | Level 3 [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	1	1
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	82	82	$ 85
Postretirement Welfare Plan [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	82	82
Plan assets measured at fair value, excluding assets not classified in fair hierarchy	82	82
Postretirement Welfare Plan [Member] | Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	$ 82	$ 82

Employee Benefits - Summary 133

Employee Benefits - Summary of Plan Investment Assets Measured at Fair Value (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Collective Investment Fund Mid-Small Cap Equity Securities [Member] | Domestic Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	$ 303	$ 30
Collective Investment Fund Mid-Small Cap Equity Securities [Member] | International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		20
Collective Investment Fund Mid-Small Cap Equity Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		18
Level 1 [Member] | Mid Small Cap Equity Securities [Member] | Domestic Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		139
Level 1 [Member] | Mid Small Cap Equity Securities [Member] | International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value		7
Level 1 [Member] | Real Estate Equity Securities [Member] | Domestic Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	98	90
Level 1 [Member] | Real Estate Equity Securities [Member] | International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets measured at fair value	$ 71	$ 73

Employee Benefits - Summarizes

Employee Benefits - Summarizes Changes for Qualified Pension Plan Investment Assets Measured at Fair Value Using Significant Unobservable Inputs (Level 3) (Detail) - Other [Member] - Level 3 [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Balance at beginning of period	$ 1	$ 2	$ 4
Unrealized gains (losses) relating to assets still held at end of year	0	(1)	(2)
Balance at end of period	$ 1	$ 1	$ 2

Employee Benefits - Expected Fu

Employee Benefits - Expected Future Benefit Payments (Detail) $ in Millions	Dec. 31, 2016USD ($)
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2,017	$ 191
2,018	202
2,019	215
2,020	230
2,021	244
2022 - 2026	1,448
Postretirement Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2,017	10
2,018	10
2,019	10
2,020	9
2,021	9
2022 - 2026	33
Medicare Part D Subsidy [Member]
Defined Benefit Plan Disclosure [Line Items]
2,017	2
2,018	2
2,019	2
2,020	2
2,021	2
2022 - 2026	$ 5

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Shares available for grant under various plans (subject to adjustment for forfeitures)	41
Fair value of shares vested	$ 128	$ 152	$ 139
Stock-based compensation expense	150	125	125
Stock-based compensation expense on an after tax basis	93	$ 78	$ 78
Unrecognized compensation cost related to nonvested share-based arrangements granted under plans	$ 199
Cost expected to be recognized over a weighted-average period as compensation expense	2 years 7 months 6 days
Minimum [Member]
Stock and unit awards vesting period	3 years
Maximum [Member]
Date of grant exercisable period	10 years
Stock and unit awards vesting period	5 years

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Options Outstanding and Exercised Under Prior and Existing Stock Incentive Plans (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options Outstanding, Weighted Average Exercise Price, and Additional Disclosures [Abstract]
Stock Options/Shares, Outstanding at Beginning of the Period	25,725,708	33,649,198	46,724,765
Stock Options/Shares, Granted	1,644,288	1,122,697	1,246,451
Stock Options/Shares, Exercised	(10,163,668)	(8,721,834)	(13,851,590)
Stock Options/Shares, Cancelled	(147,087)	(324,353)	(470,428)
Stock Options/Shares, Outstanding at End of the Period	17,059,241	25,725,708	33,649,198
Stock Options/Shares, Exercisable at End of Period	13,856,142	22,446,095	28,923,260
Weighted-Average Exercise Price, Outstanding at Beginning of the Period	$ 29.82	$ 29.31	$ 29.12
Weighted-Average Exercise Price, Granted	39.50	44.28	40.32
Weighted-Average Exercise Price, Exercised	31.09	29.59	29.59
Weighted-Average Exercise Price, Cancelled	35.18	32.93	31.12
Weighted-Average Exercise Price, Outstanding at End of the Period	29.95	29.82	29.31
Weighted-Average Exercise Price, Exercisable at End of Period	$ 27.53	$ 28.68	$ 28.79
Weighted-Average Remaining Contractual Term, Outstanding at the End of the Period	4 years 1 month 6 days	3 years 7 months 6 days	4 years
Weighted-Average Remaining Contractual Term, Exercisable at End of Period	3 years 1 month 6 days	3 years	3 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding at the End of the Period	$ 365	$ 331	$ 526
Aggregate Intrinsic Value, Exercisable at End of Period	$ 330	$ 314	$ 467

Stock-Based Compensation - Weig

Stock-Based Compensation - Weighted-Average Estimated Fair Value of Stock Options Granted and Assumptions Utilized by Company for Newly Issued Grants (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Estimated fair value	$ 10.28	$ 12.23	$ 11.38
Risk-free interest rates	1.30%	1.70%	1.70%
Dividend yield	2.60%	2.60%	2.60%
Stock volatility factor	0.36%	0.37%	0.38%
Expected life of options (in years)	5 years 6 months	5 years 6 months	5 years 6 months

Stock-Based Compensation - S139

Stock-Based Compensation - Summary of Certain Stock Option Activity (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Fair value of options vested	$ 18	$ 25	$ 33
Intrinsic value of options exercised	138	130	171
Cash received from options exercised	316	257	408
Tax benefit realized from options exercised	$ 53	$ 50	$ 66

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Options Outstanding Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding Options, Shares | shares	17,059,241
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	4 years 1 month 6 days
Outstanding Options, Weighted-Average Exercise Price	$ 29.95
Exercisable Options, Shares | shares	13,856,142
Exercisable Options, Weighted-Average Exercise Price	$ 27.53
Exercise Prices Range $11.02-$15.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit of Exercise Prices	11.02
Upper range limit of Exercise Prices	$ 15
Outstanding Options, Shares | shares	1,997,288
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	2 years 1 month 6 days
Outstanding Options, Weighted-Average Exercise Price	$ 11.14
Exercisable Options, Shares | shares	1,997,288
Exercisable Options, Weighted-Average Exercise Price	$ 11.14
Exercise Prices Range $15.01-$20.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit of Exercise Prices	15.01
Upper range limit of Exercise Prices	$ 20
Outstanding Options, Shares | shares	156,573
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	10 months 24 days
Outstanding Options, Weighted-Average Exercise Price	$ 19.63
Exercisable Options, Shares | shares	156,573
Exercisable Options, Weighted-Average Exercise Price	$ 19.63
Exercise Prices Range $20.01-$25.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit of Exercise Prices	20.01
Upper range limit of Exercise Prices	$ 25
Outstanding Options, Shares | shares	1,611,033
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	3 years 1 month 6 days
Outstanding Options, Weighted-Average Exercise Price	$ 23.85
Exercisable Options, Shares | shares	1,611,033
Exercisable Options, Weighted-Average Exercise Price	$ 23.85
Exercise Prices Range $25.01-$30.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit of Exercise Prices	25.01
Upper range limit of Exercise Prices	$ 30
Outstanding Options, Shares | shares	4,282,283
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	4 years 4 months 24 days
Outstanding Options, Weighted-Average Exercise Price	$ 28.28
Exercisable Options, Shares | shares	4,282,283
Exercisable Options, Weighted-Average Exercise Price	$ 28.28
Exercise Prices Range $30.01-$35.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit of Exercise Prices	30.01
Upper range limit of Exercise Prices	$ 35
Outstanding Options, Shares | shares	4,929,704
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	2 years
Outstanding Options, Weighted-Average Exercise Price	$ 32.45
Exercisable Options, Shares | shares	4,688,105
Exercisable Options, Weighted-Average Exercise Price	$ 32.37
Exercise Prices Range $35.01-$40.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit of Exercise Prices	35.01
Upper range limit of Exercise Prices	$ 40
Outstanding Options, Shares | shares	1,956,643
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	7 years 7 months 6 days
Outstanding Options, Weighted-Average Exercise Price	$ 38.93
Exercisable Options, Shares | shares	340,870
Exercisable Options, Weighted-Average Exercise Price	$ 36.25
Exercise Prices Range $40.01 - $44.32 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower range limit of Exercise Prices	40.01
Upper range limit of Exercise Prices	$ 44.32
Outstanding Options, Shares | shares	2,125,717
Outstanding Options, Weighted-Average Remaining Contractual Life (Years)	7 years 7 months 6 days
Outstanding Options, Weighted-Average Exercise Price	$ 42.32
Exercisable Options, Shares | shares	779,990
Exercisable Options, Weighted-Average Exercise Price	$ 41.67

Stock-Based Compensation - S141

Stock-Based Compensation - Summary of Company's Restricted Shares of Stock and Unit Awards (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares and Weighted-Average Grant Date Fair Value [Abstract]
Outstanding at beginning of period, shares	6,894,831	7,921,571	8,653,859
Granted, shares	4,879,421	2,897,396	3,133,168
Vested, shares	(3,069,035)	(3,428,736)	(3,409,650)
Cancelled, shares	(439,710)	(495,400)	(455,806)
Outstanding at end of period, shares	8,265,507	6,894,831	7,921,571
Outstanding at beginning of period, weighted-average grant-date fair value	$ 38.44	$ 34.09	$ 29.96
Granted, weighted-average grant-date fair value	39.65	44.24	40.37
Vested, weighted-average grant-date fair value	37.25	33.27	29.38
Cancelled, weighted-average grant-date fair value	40.18	38.66	34.05
Outstanding at end of period, weighted-average grant-date fair value	$ 39.50	$ 38.44	$ 34.09

Income Taxes - Components of In

Income Taxes - Components of Income Tax Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Federal
Current	$ 2,585	$ 1,956	$ 1,888
Deferred	(711)	(223)	(126)
Federal income tax	1,874	1,733	1,762
State
Current	337	346	331
Deferred	(50)	18	(6)
State income tax	287	364	325
Applicable income taxes	$ 2,161	$ 2,097	$ 2,087

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes Additional Information [Abstract]
Federal statutory rate	35.00%
Unrecognized tax positions that if recognized would impact the effective tax rate	$ 234	$ 165	$ 192
Unrecognized tax positions as a component of income taxes expense, accrued interest	37
Unrecognized tax positions as a component of income tax expense, recorded in interest	7	$ (1)	$ 4
Federal, state and foreign net operating loss carryforwards	$ 1,300
Federal, state and foreign net operating loss carryforwards expiration term	Dec. 31, 2036
Base year reserves included in retained earnings of acquired thrift institutions for which no deferred federal income tax liability has been recognized	$ 102
Federal [Member]
Income Taxes Additional Information [Abstract]
Credit carryforwards	$ 794
Credit carryforwards expiration term	Dec. 31, 2036

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Expected Income Tax Expense at Federal Statutory Rate of 35 Percent to Company's Applicable Income Tax Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax at statutory rate	$ 2,837	$ 2,810	$ 2,798
State income tax, at statutory rates, net of federal tax benefit	244	237	211
Tax credits and benefits, net of related expenses	(710)	(700)	(701)
Tax-exempt income	(196)	(201)	(205)
Noncontrolling interests	(20)	(19)	(20)
Other items	6	(30)	4
Applicable income taxes	$ 2,161	$ 2,097	$ 2,087

Income Taxes - Reconciliatio145

Income Taxes - Reconciliation of Changes in Federal, State and Foreign Unrecognized Tax Position Balances (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Uncertainties [Abstract]
Balance at beginning of period	$ 243	$ 267	$ 264
Additions (reductions) for tax positions taken in prior years	57	(17)	31
Additions for tax positions taken in the current year	12	13	4
Exam resolutions	(6)	(17)	(22)
Statute expirations	(4)	(3)	(10)
Balance at end of period	$ 302	$ 243	$ 267

Income Taxes - Significant Comp

Income Taxes - Significant Components of the Company's Net Deferred Tax Asset (Liability) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets
Allowance for credit losses	$ 1,667	$ 1,615
Federal, state and foreign net operating loss and credit carryforwards	971	464
Accrued expenses	806	764
Partnerships and other investment assets	521	380
Pension and postretirement benefits	394	247
Securities available-for-sale and financial instruments	220
Stock compensation	120	131
Other deferred tax assets, net	291	219
Gross deferred tax assets	4,990	3,820
Deferred Tax Liabilities
Leasing activities	(3,096)	(3,026)
Goodwill and other intangible assets	(962)	(859)
Mortgage servicing rights	(883)	(859)
Loans	(234)	(204)
Fixed assets	(60)	(111)
Securities available-for-sale and financial instruments		(47)
Other deferred tax liabilities, net	(113)	(55)
Gross deferred tax liabilities	(5,348)	(5,161)
Valuation allowance	(121)	(137)
Net Deferred Tax Asset (Liability)	$ (479)	$ (1,478)

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Realized and unrealized gains (losses) on derivatives classified as cash flow hedges recorded in other comprehensive income (loss)		$ 55,000,000	$ (67,000,000)
Non-derivative debt instruments designated as net investment hedges		0	0
Fair value of derivatives under collateral agreements in a net liability position		563,000,000
Collateral posted by company netted against net liability position		455,000,000
Forward commitments to sell mortgage loans		6,500,000,000
Hedged mortgage loans held for sale		3,700,000,000
Unfunded mortgage loan commitments		3,500,000,000
Up Scenario [Member] | Net Sensitivity [Member]
Derivative [Line Items]
Net fair value 25 basis points		1,000,000	(2,000,000)
Net fair value 50 basis points		(6,000,000)	(16,000,000)
Net fair value 100 basis points		(44,000,000)	(33,000,000)
Down Scenario [Member] | Net Sensitivity [Member]
Derivative [Line Items]
Net fair value 25 basis points		(10,000,000)	(7,000,000)
Net fair value 50 basis points		(29,000,000)	(24,000,000)
Net fair value 100 basis points		$ (101,000,000)	$ (123,000,000)
Scenario, Forecast [Member]
Derivative [Line Items]
Estimated loss to be reclassified from other comprehensive income (loss) into earnings	$ 20,000,000

Derivative Instruments - Asset

Derivative Instruments - Asset and Liability Management Derivative Positions of Company (Detail) - Asset and Liability Management Positions [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Notional Value, Assets	$ 27,266	$ 27,442
Fair Value, Assets	427	201
Notional Value, Liabilities	19,339	22,818
Fair Value, Liabilities	249	286
Other Derivatives [Member]
Derivative [Line Items]
Notional Value, Assets	$ 19	$ 36
Derivative Asset Average Remaining Maturity Period	11 days	15 days
Notional Value, Liabilities	$ 830	$ 662
Fair Value, Liabilities	$ 106	$ 64
Derivative Liability Average Remaining Maturity Period	3 years 5 months 1 day	2 years 7 months 6 days
Fair Value Hedges [Member] | Interest Rate Contracts [Member] | Receive Fixed/Pay Floating Swaps [Member]
Derivative [Line Items]
Notional Value, Assets	$ 2,550	$ 3,050
Fair Value, Assets	$ 49	$ 73
Derivative Asset Average Remaining Maturity Period	4 years 3 months 11 days	4 years 5 months 5 days
Notional Value, Liabilities	$ 1,250
Fair Value, Liabilities	$ 12
Derivative Liability Average Remaining Maturity Period	2 years 3 months 26 days
Cash Flow Hedges [Member] | Interest Rate Contracts [Member] | Pay Fixed/Receive Floating Swaps [Member]
Derivative [Line Items]
Notional Value, Assets	$ 3,272	$ 1,772
Fair Value, Assets	$ 108	$ 7
Derivative Asset Average Remaining Maturity Period	8 years 7 months 17 days	9 years 2 months 19 days
Notional Value, Liabilities	$ 2,787	$ 5,009
Fair Value, Liabilities	$ 35	$ 146
Derivative Liability Average Remaining Maturity Period	9 months 29 days	1 year 1 month 17 days
Net Investment Hedges [Member] | Foreign Exchange Forward Contracts [Member]
Derivative [Line Items]
Notional Value, Assets	$ 1,347	$ 1,140
Fair Value, Assets	$ 15	$ 4
Derivative Asset Average Remaining Maturity Period	15 days	15 days
Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Receive Fixed/Pay Floating Swaps [Member]
Derivative [Line Items]
Notional Value, Assets	$ 6,452	$ 3,733
Fair Value, Assets	$ 26	$ 42
Derivative Asset Average Remaining Maturity Period	11 years 5 months 23 days	9 years 11 months 23 days
Notional Value, Liabilities	$ 1,561	$ 4,748
Fair Value, Liabilities	$ 16	$ 18
Derivative Liability Average Remaining Maturity Period	6 years 6 months 15 days	10 years 2 months 5 days
Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Pay Fixed/Receive Floating Swaps [Member]
Derivative [Line Items]
Notional Value, Assets	$ 4,705	$ 287
Fair Value, Assets	$ 13	$ 2
Derivative Asset Average Remaining Maturity Period	6 years 6 months 4 days	9 years 9 months 26 days
Notional Value, Liabilities	$ 2,320	$ 4,158
Fair Value, Liabilities	$ 9	$ 35
Derivative Liability Average Remaining Maturity Period	7 years 9 months 18 days	9 years 11 months 19 days
Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Futures and Forwards [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value, Assets	$ 1,748	$ 3,812
Fair Value, Assets	$ 13	$ 17
Derivative Asset Average Remaining Maturity Period	1 month 2 days	26 days
Notional Value, Liabilities	$ 1,722	$ 452
Fair Value, Liabilities	$ 18	$ 1
Derivative Liability Average Remaining Maturity Period	18 days	22 days
Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Futures and Forwards [Member] | Written [Member]
Derivative [Line Items]
Notional Value, Assets	$ 2,278	$ 3,201
Fair Value, Assets	$ 129	$ 12
Derivative Asset Average Remaining Maturity Period	29 days	1 month 2 days
Notional Value, Liabilities	$ 4,214	$ 2,559
Fair Value, Liabilities	$ 43	$ 7
Derivative Liability Average Remaining Maturity Period	1 month 2 days	1 month 13 days
Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Options [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value, Assets	$ 1,565	$ 2,935
Fair Value, Assets	$ 43
Derivative Asset Average Remaining Maturity Period	8 years 7 months 6 days	22 days
Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Options [Member] | Written [Member]
Derivative [Line Items]
Notional Value, Assets	$ 1,073	$ 3,199
Fair Value, Assets	$ 25	$ 29
Derivative Asset Average Remaining Maturity Period	26 days	1 month 6 days
Notional Value, Liabilities	$ 12	$ 5
Fair Value, Liabilities	$ 1	$ 1
Derivative Liability Average Remaining Maturity Period	22 days	29 days
Other Economic Hedges [Member] | Foreign Exchange Forward Contracts [Member]
Derivative [Line Items]
Notional Value, Assets	$ 849	$ 3,023
Fair Value, Assets	$ 6	$ 13
Derivative Asset Average Remaining Maturity Period	7 days	4 days
Notional Value, Liabilities	$ 867	$ 2,380
Fair Value, Liabilities	$ 6	$ 10
Derivative Liability Average Remaining Maturity Period	7 days	11 days
Other Economic Hedges [Member] | Equity Contracts [Member]
Derivative [Line Items]
Notional Value, Assets	$ 11	$ 62
Derivative Asset Average Remaining Maturity Period	4 months 24 days	5 months 19 days
Notional Value, Liabilities	$ 102	$ 24
Fair Value, Liabilities	$ 1	$ 1
Derivative Liability Average Remaining Maturity Period	6 months 26 days	9 months 26 days
Other Economic Hedges [Member] | Credit Contracts [Member]
Derivative [Line Items]
Notional Value, Assets	$ 1,397	$ 1,192
Fair Value, Assets		$ 2
Derivative Asset Average Remaining Maturity Period	3 years 4 months 17 days	2 years 6 months 29 days
Notional Value, Liabilities	$ 3,674	$ 2,821
Fair Value, Liabilities	$ 2	$ 3
Derivative Liability Average Remaining Maturity Period	3 years 6 months 26 days	2 years 11 months 27 days

Derivative Instruments - Ass149

Derivative Instruments - Asset and Liability Management Derivative Positions of Company (Parenthetical) (Detail) - Asset and Liability Management Positions [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Notional Value, Liabilities	$ 19,339	$ 22,818
Fair Value, Liabilities	249	286
Notional Value, Assets	27,266	27,442
Underwriting Purchase and Sale Commitments [Member]
Derivative [Line Items]
Notional Value, Liabilities	19	36
Notional Value, Assets	19	36
Swap [Member] | Visa Class B Shares [Member]
Derivative [Line Items]
Notional Value, Liabilities	811	626
Fair Value, Liabilities	$ 106	$ 64
Derivative Liability Average Remaining Maturity Period	3 years 6 months	2 years 9 months

Derivative Instruments - Custom

Derivative Instruments - Customer-Related Derivative Positions of Company (Detail) - Customer-Related Positions [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Notional Value, Assets	$ 113,188	$ 72,112
Fair Value, Assets	2,543	2,046
Notional Value, Liabilities	122,497	80,044
Fair Value, Liabilities	2,610	2,099
Interest Rate Contracts [Member] | Receive Fixed/Pay Floating Swaps [Member]
Derivative [Line Items]
Notional Value, Assets	38,501	32,647
Fair Value, Assets	$ 930	$ 1,097
Derivative Asset Average Remaining Maturity Period	4 years 26 days	5 years 8 months 9 days
Notional Value, Liabilities	$ 39,403	$ 14,068
Fair Value, Liabilities	$ 632	$ 54
Derivative Liability Average Remaining Maturity Period	4 years 10 months 21 days	4 years 8 months 16 days
Interest Rate Contracts [Member] | Pay Fixed/Receive Floating Swaps [Member]
Derivative [Line Items]
Notional Value, Assets	$ 36,671	$ 10,685
Fair Value, Assets	$ 612	$ 43
Derivative Asset Average Remaining Maturity Period	4 years 11 months 27 days	4 years 6 months 18 days
Notional Value, Liabilities	$ 40,324	$ 35,045
Fair Value, Liabilities	$ 996	$ 1,160
Derivative Liability Average Remaining Maturity Period	4 years 26 days	5 years 8 months 27 days
Interest Rate Contracts [Member] | Options [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value, Assets	$ 14,545	$ 8,705
Fair Value, Assets	$ 51	$ 10
Derivative Asset Average Remaining Maturity Period	1 year 10 months 6 days	2 years 7 months 10 days
Notional Value, Liabilities	$ 125	$ 146
Fair Value, Liabilities	$ 2	$ 1
Derivative Liability Average Remaining Maturity Period	1 year 4 months 13 days	2 years 2 months 23 days
Interest Rate Contracts [Member] | Options [Member] | Written [Member]
Derivative [Line Items]
Notional Value, Assets	$ 125	$ 146
Fair Value, Assets	$ 3	$ 2
Derivative Asset Average Remaining Maturity Period	1 year 4 months 13 days	2 years 2 months 23 days
Notional Value, Liabilities	$ 13,518	$ 8,482
Fair Value, Liabilities	$ 50	$ 9
Derivative Liability Average Remaining Maturity Period	1 year 8 months 12 days	2 years 6 months 26 days
Interest Rate Contracts [Member] | Futures [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value, Assets	$ 306
Derivative Asset Average Remaining Maturity Period	1 year 11 months 16 days
Notional Value, Liabilities	$ 7,111	$ 2,859
Fair Value, Liabilities	$ 7	$ 2
Derivative Liability Average Remaining Maturity Period	10 months 24 days	10 months 2 days
Interest Rate Contracts [Member] | Futures [Member] | Written [Member]
Derivative [Line Items]
Notional Value, Assets		$ 45
Derivative Asset Average Remaining Maturity Period		11 months 19 days
Foreign Exchange Rate Contracts [Member] | Forwards, Spots and Swaps [Member]
Derivative [Line Items]
Notional Value, Assets	$ 20,664	$ 18,399
Fair Value, Assets	$ 849	$ 851
Derivative Asset Average Remaining Maturity Period	6 months 29 days	7 months 2 days
Notional Value, Liabilities	$ 19,640	$ 17,959
Fair Value, Liabilities	$ 825	$ 830
Derivative Liability Average Remaining Maturity Period	7 months 6 days	6 months 29 days
Foreign Exchange Option [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value, Assets	$ 2,376	$ 1,485
Fair Value, Assets	$ 98	$ 43
Derivative Asset Average Remaining Maturity Period	1 year 8 months 1 day	1 year 2 months 9 days
Foreign Exchange Option [Member] | Written [Member]
Derivative [Line Items]
Notional Value, Liabilities	$ 2,376	$ 1,485
Fair Value, Liabilities	$ 98	$ 43
Derivative Liability Average Remaining Maturity Period	1 year 8 months 1 day	1 year 2 months 9 days

Derivative Instruments - Summar

Derivative Instruments - Summary of Effective Portion of Gains (Losses) Recognized in Other Comprehensive Income (Loss) and Gains (Losses) Reclassified from Other Comprehensive Income (Loss) into Earnings (Detail) - Asset and Liability Management Positions [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flow Hedges [Member] | Interest Rate Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Losses) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ 46	$ (15)	$ (26)
Derivative Instruments, Gains (Losses) Reclassified from Other Comprehensive Income (Loss) into Earnings	(76)	(120)	(115)
Net Investment Hedges [Member] | Foreign Exchange Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Losses) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ 33	$ 101	$ 130

Derivative Instruments - Sum152

Derivative Instruments - Summary of Gains (Losses) Recognized in Earnings for Fair Value Hedges, Other Economic Hedges and Customer-Related Positions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Asset and Liability Management Positions [Member] | Interest Rate Contracts [Member] | Other Noninterest Income [Member] | Fair Value Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	$ (31)	$ 7	$ 29
Asset and Liability Management Positions [Member] | Interest Rate Contracts [Member] | Mortgage Banking Revenue [Member] | Other Economic Hedges [Member] | Futures and Forwards [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	101	186	(122)
Asset and Liability Management Positions [Member] | Interest Rate Contracts [Member] | Mortgage Banking Revenue [Member] | Other Economic Hedges [Member] | Options [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	331	191	287
Asset and Liability Management Positions [Member] | Interest Rate Contracts [Member] | Mortgage Banking Revenue [Member] | Other Economic Hedges [Member] | Receive Fixed/Pay Floating Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	226	139	384
Asset and Liability Management Positions [Member] | Interest Rate Contracts [Member] | Mortgage Banking Revenue [Member] | Other Economic Hedges [Member] | Pay Fixed/Receive Floating Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	(140)	(33)
Asset and Liability Management Positions [Member] | Foreign Exchange Forward Contracts [Member] | Commercial Products Revenue [Member] | Other Economic Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	(14)	108	(29)
Asset and Liability Management Positions [Member] | Equity Contracts [Member] | Compensation Expense [Member] | Other Economic Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	1	(1)	2
Asset and Liability Management Positions [Member] | Credit Contracts [Member] | Other Noninterest Income [Member] | Other Economic Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	1	2
Asset and Liability Management Positions [Member] | Other Derivatives [Member] | Other Noninterest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	(39)		(43)
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Other Noninterest Income [Member] | Options [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	(5)	3
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Other Noninterest Income [Member] | Receive Fixed/Pay Floating Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	(708)	360	686
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Other Noninterest Income [Member] | Pay Fixed/Receive Floating Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	769	(320)	(652)
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Other Noninterest Income [Member] | Futures [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	(6)	1
Customer-Related Positions [Member] | Foreign Exchange Rate Contracts [Member] | Commercial Products Revenue [Member] | Forwards, Spots and Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	88	74	66
Customer-Related Positions [Member] | Foreign Exchange Option [Member] | Commercial Products Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in earnings	$ (1)	$ 2	$ 1

Derivative Instruments - Sum153

Derivative Instruments - Summary of Gains (Losses) Recognized in Earnings for Fair Value Hedges, Other Economic Hedges and Customer-Related Positions (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Asset and Liability Management Positions [Member] | Fair Value Hedges [Member] | Interest Rate Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (losses) on items hedged by fair value hedges	$ 31	$ (7)	$ (27)

Netting Arrangements for Cer154

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities - Additional Information (Detail) $ in Billions	Dec. 31, 2016USD ($)
Derivative [Line Items]
Notional amount of derivative	$ 282.3
Exchange Cleared [Member]
Derivative [Line Items]
Notional amount of derivative	130.3
Exchange Traded [Member]
Derivative [Line Items]
Notional amount of derivative	$ 7.4

Netting Arrangements for Cer155

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities - Summary of Maturities by Category of Collateral Pledged for Repurchase Agreements and Securities Loaned Transactions (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 801	$ 1,092
Securities loaned	223
Gross amount of recognized liabilities for repurchase agreements and securities loaned	1,024
Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	771	924
Securities loaned	223
Gross amount of recognized liabilities for repurchase agreements and securities loaned	994
Less Than 30 Days [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	30	168
Gross amount of recognized liabilities for repurchase agreements and securities loaned	30
Corporate Debt Securities [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	30
Securities loaned	223
Corporate Debt Securities [Member] | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	30
Securities loaned	223
U.S. Treasury and Agencies [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	60	122
U.S. Treasury and Agencies [Member] | Overnight and Continuous [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	60	122
Mortgage-Backed Securities Residential [Member] | Agency [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	711	970
Mortgage-Backed Securities Residential [Member] | Overnight and Continuous [Member] | Agency [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	681	802
Mortgage-Backed Securities Residential [Member] | Less Than 30 Days [Member] | Agency [Member]
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 30	$ 168

Netting Arrangements for Cer156

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities - Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet Assets But Available for Offset in Event of Default (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Offsetting [Abstract]
Derivative assets Gross Recognized Assets	$ 2,122	$ 1,879
Reverse repurchase agreements Gross Recognized Assets	77	106
Securities borrowed Gross Recognized Assets	944	772
Total Gross Recognized Assets	3,143	2,757
Derivative assets Gross amounts assets offset in consolidated balance sheet	(984)	(807)
Total Gross amounts assets offset in consolidated balance sheet	(984)	(807)
Derivative assets Net Amounts Presented in the Consolidated Balance Sheet	1,138	1,072
Reverse repurchase agreements Net Amounts Presented in the Consolidated Balance Sheet	77	106
Securities borrowed Net Amounts Presented in the Consolidated Balance Sheet	944	772
Total Net Amounts Presented in the Consolidated Balance Sheet	2,159	1,950
Derivative assets Gross Amounts Not Offset Consolidated Balance Financial Instruments	(78)	(82)
Reverse repurchase agreements Gross financial instrument asset amounts not offset in consolidated balance sheet	(60)	(102)
Securities borrowed Gross financial instrument asset amounts not offset in consolidated balance sheet	(10)
Total Gross financial instrument asset amounts not offset in consolidated balance sheet	(148)	(184)
Derivative assets Gross collateral received amounts not offset in consolidated balance sheet	(10)
Reverse repurchase agreements Gross collateral received amounts not offset in consolidated balance sheet	(17)	(4)
Securities borrowed Gross collateral received amounts not offset in consolidated balance sheet	(909)	(753)
Total Gross collateral received amounts not offset in consolidated balance sheet	(936)	(757)
Derivative assets Net Amount	1,050	990
Reverse repurchase agreements Net Amount	0	0
Securities borrowed Net Amount	25	19
Total Net Amount Assets	$ 1,075	$ 1,009

Netting Arrangements for Cer157

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities - Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet Assets But Available for Offset in Event of Default (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Offsetting [Abstract]
Cash collateral netted against derivative assets	$ 210	$ 165
Derivative assets not subject to netting arrangements	$ 848	$ 368

Netting Arrangements for Cer158

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities - Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet Liabilities But Available for Offset in Event of Default (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Offsetting [Abstract]
Derivative liabilities Gross recognized liabilities	$ 1,951	$ 1,809
Repurchase agreements Gross recognized liabilities	801	1,092
Securities loaned Gross recognized liabilities	223
Total Gross recognized liabilities	2,975	2,901
Derivative liabilities Gross amounts liabilities offset in consolidated balance sheet	(1,185)	(1,283)
Total Gross amounts liabilities offset in consolidated balance sheet	(1,185)	(1,283)
Derivative liabilities Net amounts liabilities presented in consolidated balance sheet	766	526
Repurchase agreements Net amounts liabilities presented in consolidated balance sheet	801	1,092
Securities loaned Net amounts liabilities presented in consolidated balance sheet	223
Total Net amounts liabilities presented in consolidated balance sheet	1,790	1,618
Derivative liabilities Gross financial instrument liability amounts not offset in consolidated balance sheet	(78)	(82)
Repurchase agreements Gross financial instrument liability amounts not offset in consolidated balance sheet	(60)	(102)
Securities loaned Gross financial instruments not offset in consolidated balance sheet	(10)
Total Gross financial instrument liability amounts not offset in consolidated balance sheet	(148)	(184)
Repurchase agreements Gross collateral pledged amounts not offset in consolidated balance sheet	(741)	(990)
Securities loaned Gross collateral pledged amounts not offset in consolidated balance sheet	(211)
Total Gross collateral pledged amounts not offset in consolidated balance sheet	(952)	(990)
Derivative liabilities Net Amount	688	444
Repurchase agreements Net Amount	0	0
Securities loaned Net Amount	2
Total Net Amount Liabilities	$ 690	$ 444

Netting Arrangements for Cer159

Netting Arrangements for Certain Financial Instruments and Securities Financing Activities - Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet Liabilities But Available for Offset in Event of Default (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Offsetting [Abstract]
Cash collateral netted against derivative liabilities	$ 411	$ 641
Derivative liabilities not subject to netting arrangements	$ 908	$ 576

Fair Values of Assets and Li160

Fair Values of Assets and Liabilities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair value measurement transfers from one level to another	$ 0	$ 0	$ 0
Significant changes to the valuation techniques to measure fair value during the reporting period	No significant changes to the valuation techniques used by the Company to measure fair value.
Mortgage loans held for sale measured at fair value, net gain	$ 33,000,000	27,000,000	$ 185,000,000
Minimum [Member]
Fair Value Disclosures [Abstract]
Assumed credit valuation adjustment as percentage of derivative contract fair value	0.00%
Maximum [Member]
Fair Value Disclosures [Abstract]
Assumed credit valuation adjustment as percentage of derivative contract fair value	96.00%
Average [Member]
Fair Value Disclosures [Abstract]
Assumed credit valuation adjustment as percentage of derivative contract fair value	3.00%
Standby Letters Of Credit, Unfunded Commitments and Deferred Non-Yield Loan Fees [Member]
Fair Value Disclosures [Abstract]
Carrying value of guarantee obligations	$ 618,000,000	515,000,000
Other Guarantees [Member]
Fair Value Disclosures [Abstract]
Carrying value of guarantee obligations	$ 186,000,000	$ 184,000,000

Fair Values of Assets and Li161

Fair Values of Assets and Liabilities - Valuation Assumption Ranges for Level 3 Available -for-Sale Investment Securities (Detail) - Level 3 [Member] - Mortgage-Backed Securities Residential [Member]	12 Months Ended
	Dec. 31, 2016
Minimum [Member] | Non-Agency Prime [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated lifetime prepayment rates	6.00%
Lifetime loss severity rates	15.00%
Discount margin	2.00%
Minimum [Member] | Non-Agency Non-Prime [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated lifetime prepayment rates	3.00%
Lifetime probability of default rates	4.00%
Lifetime loss severity rates	15.00%
Discount margin	1.00%
Maximum [Member] | Non-Agency Prime [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated lifetime prepayment rates	19.00%
Lifetime probability of default rates	6.00%
Lifetime loss severity rates	65.00%
Discount margin	7.00%
Maximum [Member] | Non-Agency Non-Prime [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated lifetime prepayment rates	16.00%
Lifetime probability of default rates	12.00%
Lifetime loss severity rates	80.00%
Discount margin	10.00%
Average [Member] | Non-Agency Prime [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated lifetime prepayment rates	14.00%
Lifetime probability of default rates	4.00%
Lifetime loss severity rates	35.00%
Discount margin	3.00%
Average [Member] | Non-Agency Non-Prime [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated lifetime prepayment rates	9.00%
Lifetime probability of default rates	7.00%
Lifetime loss severity rates	49.00%
Discount margin	4.00%

Fair Values of Assets and Li162

Fair Values of Assets and Liabilities - Valuation Assumption Ranges for MSRs (Detail) - Mortgage Servicing Rights [Member]	12 Months Ended
	Dec. 31, 2016
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Expected prepayment	6.00%
Option adjusted spread	7.00%
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Expected prepayment	18.00%
Option adjusted spread	10.00%
Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Expected prepayment	10.00%
Option adjusted spread	8.00%

Fair Values of Assets and Li163

Fair Values of Assets and Liabilities - Valuation Assumption Ranges for Derivative Commitments (Detail) - Derivative Mortgage Loans Commitments [Member]	Dec. 31, 2016
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Expected loan close rate	33.00%
Inherent MSR value (basis points per loan)	(34.00%)
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Expected loan close rate	100.00%
Inherent MSR value (basis points per loan)	203.00%
Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Expected loan close rate	80.00%
Inherent MSR value (basis points per loan)	113.00%

Fair Values of Assets and Li164

Fair Values of Assets and Liabilities - Balances of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities netting		$ (1,185)	$ (1,283)
Derivative liabilities total		766	526
Derivative assets netting		(984)	(807)
Derivative assets total		1,138	1,072
Available-for-sale securities	[1]	66,284	61,997
Mortgage loans held for sale		4,822	3,110
Mortgage servicing rights		2,591	2,512	$ 2,338	$ 2,680
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities total		1,674	1,102
Derivative assets total		1,986	1,440
Available-for-sale securities		66,284	61,997
Mortgage loans held for sale		4,822	3,110
Mortgage servicing rights		2,591	2,512
Other assets		1,320	791
Total		77,003	69,850
Short-term borrowings and other liabilities		1,080
Short-term borrowings			767
Total		2,754	1,869
Fair Value, Measurements, Recurring [Member] | Netting and Collateral One [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities netting		(1,185)	(1,283)
Derivative assets netting		(984)	(807)
Total		(984)	(807)
Total		(1,185)	(1,283)
Fair Value, Measurements, Recurring [Member] | U.S. Treasury and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		17,127	4,596
Fair Value, Measurements, Recurring [Member] | Obligations of State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		5,039	5,316
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		9	610
Fair Value, Measurements, Recurring [Member] | Perpetual Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			161
Fair Value, Measurements, Recurring [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		36	68
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities Residential [Member] | Non-Agency Prime [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		242	318
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities Residential [Member] | Non-Agency Non-Prime [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		195	240
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities Residential [Member] | Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		43,138	50,076
Fair Value, Measurements, Recurring [Member] | Commercial [Member] | Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		15	52
Fair Value, Measurements, Recurring [Member] | Asset-Backed Securities [Member] | Collateralized Loan Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			19
Fair Value, Measurements, Recurring [Member] | Asset-Backed Securities [Member] | Asset-Backed Securities Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		483	541
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities before netting		7	2
Available-for-sale securities		16,391	3,898
Other assets		183	202
Total		16,574	4,100
Short-term borrowings and other liabilities		142
Short-term borrowings			122
Total		149	124
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Treasury and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		16,355	3,708
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			102
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Perpetual Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			48
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		36	40
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities before netting		2,469	2,266
Derivative assets before netting		2,416	1,632
Available-for-sale securities		49,445	57,530
Mortgage loans held for sale		4,822	3,110
Other assets		1,137	589
Total		57,820	62,861
Short-term borrowings and other liabilities		938
Short-term borrowings			645
Total		3,407	2,911
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Treasury and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		772	888
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		5,039	5,316
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			499
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Perpetual Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			113
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			28
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities Residential [Member] | Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		43,138	50,076
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Commercial [Member] | Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		15	52
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Asset-Backed Securities [Member] | Collateralized Loan Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			19
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Asset-Backed Securities [Member] | Asset-Backed Securities Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		481	539
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities before netting		383	117
Derivative assets before netting		554	615
Available-for-sale securities		448	569
Mortgage servicing rights		2,591	2,512
Total		3,593	3,696
Total		383	117
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		9	9
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities Residential [Member] | Non-Agency Prime [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		242	318
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities Residential [Member] | Non-Agency Non-Prime [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		195	240
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Asset-Backed Securities [Member] | Asset-Backed Securities Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		$ 2	$ 2
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Fair Values of Assets and Li165

Fair Values of Assets and Liabilities - Changes in Fair Value for All Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Non-Agency Prime [Member] | Mortgage-Backed Securities Residential [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of Period Balance	$ 318	$ 405	$ 478
Net Gains (Losses) Included in Net Income	(1)
Net Gains (Losses) Included in Other Comprehensive Income (Loss)		(4)	15
Principal Payments	(75)	(83)	(88)
Settlements	0	0	0
End of Period Balance	242	318	405
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period		(4)	14
Non-Agency Non-Prime [Member] | Mortgage-Backed Securities Residential [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of Period Balance	240	280	297
Net Gains (Losses) Included in Net Income	(1)	(1)	(6)
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	(2)	(1)	19
Principal Payments	(42)	(38)	(30)
Settlements	0	0	0
End of Period Balance	195	240	280
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period	(2)	(1)	19
Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of Period Balance	9	9	9
Settlements	0	0	0
End of Period Balance	9	9	9
Asset-Backed Securities Other [Member] | Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of Period Balance	2	62	63
Net Gains (Losses) Included in Net Income		4	4
Net Gains (Losses) Included in Other Comprehensive Income (Loss)		(2)
Purchases			5
Sales		(51)
Principal Payments		(11)	(10)
Settlements	0	0	0
End of Period Balance	2	2	62
Mortgage Servicing Rights [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of Period Balance	2,512	2,338	2,680
Net Gains (Losses) Included in Net Income	(488)	(487)	(588)
Purchases	43	29	5
Sales			(141)
Issuances	524	632	382
Settlements	0	0	0
End of Period Balance	2,591	2,512	2,338
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period	(488)	(487)	(588)
Available-for-Sale Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of Period Balance	569	756	847
Net Gains (Losses) Included in Net Income	(2)	3	(2)
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	(2)	(7)	34
Purchases			5
Sales		(51)
Principal Payments	(117)	(132)	(128)
Settlements	0	0	0
End of Period Balance	448	569	756
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period	(2)	(5)	33
Derivative [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of Period Balance	498	574	445
Net Gains (Losses) Included in Net Income	332	707	904
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	0	0	0
Purchases	2	1	1
Sales	(14)	(13)	(4)
Principal Payments	0	0	0
Issuances	0	0	0
Settlements	(647)	(771)	(772)
End of Period Balance	171	498	574
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period	$ (257)	$ 135	$ 188

Fair Values of Assets and Li166

Fair Values of Assets and Liabilities - Changes in Fair Value for All Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Noninterest Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net gains and (losses) on net derivative assets and liabilities included in net income	$ (77)	$ 289	$ 404
Net Change in net derivative asset and liability unrealized gains (losses) relating to assets still held at end of period	(276)	92	128
Mortgage Banking Revenue [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net gains and (losses) on net derivative assets and liabilities included in net income	409	418	500
Net Change in net derivative asset and liability unrealized gains (losses) relating to assets still held at end of period	19	$ 43	60
Securities Gains Losses [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net gains and losses on available for sale securities included in net income	(3)		(3)
Interest Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net gains and losses on available for sale securities included in net income	$ 1		$ 1

Fair Values of Assets and Li167

Fair Values of Assets and Liabilities - Adjusted Carrying Values for Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 59	$ 87
Other assets	60	66
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	59	87
Other assets	$ 60	$ 66

Fair Values of Assets and Li168

Fair Values of Assets and Liabilities - Losses Recognized Related to Nonrecurring Fair Value Measurements of Individual Assets or Portfolios (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans Receivable [Member]
Fair Value Assets Measured On Nonrecurring Basis Losses Recognized [Line Items]
Asset impairment charges	$ 192	$ 175	$ 108
Other Assets [Member]
Fair Value Assets Measured On Nonrecurring Basis Losses Recognized [Line Items]
Asset impairment charges	$ 32	$ 42	$ 70

Fair Values of Assets and Li169

Fair Values of Assets and Liabilities - Differences Between Aggregate Fair Value Carrying Amount of MLHFS for which Fair Value Option has been Elected and Aggregate Unpaid Principal Amount Contractually Obligated to Receive at Maturity (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair value carrying amount, total loans	$ 4,822	$ 3,110
Fair value carrying amount, nonaccrual loans	2	5
Fair value carrying amount, loans 90 days or more past due	1
Aggregate unpaid principal, total loans	4,763	3,032
Aggregate unpaid principal, nonaccrual loans	3	7
Aggregate unpaid principal, loans 90 days or more past due	1
Carrying amount over (under) unpaid principal, total loans	59	78
Carrying amount over (under) unpaid principal, nonaccrual loans	(1)	(2)
Carrying amount over (under) unpaid principal, loans 90 days or more past due	$ 0	$ 0

Fair Values of Assets and Li170

Fair Values of Assets and Liabilities - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financial Assets
Cash and due from banks	$ 15,705	$ 11,147	$ 10,654	$ 8,477
Investment securities held-to-maturity	42,991	43,590
Financial Liabilities
Deposits	334,590	300,400
Long-term debt	33,323	32,078
Carrying Amount [Member]
Financial Assets
Cash and due from banks	15,705	11,147
Federal funds sold and securities purchased under resale agreements	138	169
Investment securities held-to-maturity	42,991	43,590
Loans held for sale	4	74
Loans	269,394	256,986
Other financial instruments	2,362	2,311
Financial Liabilities
Deposits	334,590	300,400
Short-term borrowings	12,891	27,110
Long-term debt	33,323	32,078
Other Liabilities	1,702	1,353
Fair Value [Member]
Financial Assets
Cash and due from banks	15,705	11,147
Federal funds sold and securities purchased under resale agreements	138	169
Investment securities held-to-maturity	42,435	43,493
Loans held for sale	4	74
Loans	273,422	259,823
Other financial instruments	2,369	2,319
Financial Liabilities
Deposits	334,361	300,225
Short-term borrowings	12,706	26,782
Long-term debt	33,678	32,412
Other Liabilities	1,702	1,353
Fair Value [Member] | Level 1 [Member]
Financial Assets
Cash and due from banks	15,705	11,147
Investment securities held-to-maturity	4,605	2,275
Fair Value [Member] | Level 2 [Member]
Financial Assets
Federal funds sold and securities purchased under resale agreements	138	169
Investment securities held-to-maturity	37,810	41,138
Other financial instruments	920	921
Financial Liabilities
Deposits	334,361	300,225
Short-term borrowings	12,706	26,782
Long-term debt	33,678	32,412
Fair Value [Member] | Level 3 [Member]
Financial Assets
Investment securities held-to-maturity	20	80
Loans held for sale	4	74
Loans	273,422	259,823
Other financial instruments	1,449	1,398
Financial Liabilities
Other Liabilities	$ 1,702	$ 1,353

Guarantees and Contingent Li171

Guarantees and Contingent Liabilities - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Guarantees And Contingent Liabilities (Textual) [Abstract]
Liability related to remaining Visa Litigation, carrying amount	$ 19
Rental expense for operating leases	326	$ 328	$ 326
Securities Lending Indemnifications [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	3,083
Collateral Held	3,164
Tender Option Bond Program Guarantee [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	1,114
Collateral Held	1,129
Standby Letters of Credit [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	$ 11,917
Weighted-average term of standby letter of credit arrangements	20 months
Carrying Amount	$ 61
Third Party Borrowing Arrangements [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	8
Asset Sales [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	6,211
Carrying Amount	138
Reserve for potential losses related to sale or syndication of tax-advantage investments	119
Representation and warranty reserve	19	30
Unresolved representation and warranty claims from GSEs	7	$ 12
Merchant Processing [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	91,040
Carrying Amount	48
Collateral Held	483
Value of airline tickets purchased to deliver at future date	5,700
Company held collateral in escrow deposits, letters of credit and indemnities from financial institutions and liens on various assets	375
Company held collateral of merchant escrow deposits with respect to future delivery risk	22
Liability primarily related to airline processing arrangements	35
Merchant escrow deposits held as collateral related to unresolved charge-backs	86
Recorded liability for potential losses related to unresolved charge-backs	13
Minimum Revenue Guarantees [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	9
Other Guarantees [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Maximum Potential Future Payments	$ 1,287
Other Guarantees [Member] | USB Capital IX [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Percentage of common equity in wholly owned USB Capital IX	100.00%
Issuance trust	USB Capital IX
Trust total asset consisting primarily of Series A Preferred Stock	$ 682
Payment obligation guarantee by Company of the trust to third party investors	$ 681
Visa Class B Shares [Member]
Guarantees And Contingent Liabilities (Textual) [Abstract]
Number of shares sold	1.5
Remaining shares held by the Company	4.9

Guarantees and Contingent Li172

Guarantees and Contingent Liabilities - Contract or Notional Amounts of Unfunded Commitments to Extend Credit (Detail) $ in Millions	Dec. 31, 2016USD ($)
Commercial and Commercial Real Estate Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	$ 124,923
Corporate and Purchasing Card Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	25,085
Residential Mortgages [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	391
Credit Card [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	101,258
Other Retail Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	35,806
Covered Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	320
Other [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	5,576
Less Than One Year [Member] | Commercial and Commercial Real Estate Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	26,471
Less Than One Year [Member] | Corporate and Purchasing Card Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	25,085
Less Than One Year [Member] | Residential Mortgages [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	379
Less Than One Year [Member] | Credit Card [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	101,258
Less Than One Year [Member] | Other Retail Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	13,254
Less Than One Year [Member] | Other [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	5,558
Greater Than One Year [Member] | Commercial and Commercial Real Estate Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	98,452
Greater Than One Year [Member] | Residential Mortgages [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	12
Greater Than One Year [Member] | Other Retail Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	22,552
Greater Than One Year [Member] | Covered Loans [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	320
Greater Than One Year [Member] | Other [Member]
Other Commitments [Line Items]
Contract or notional amounts of unfunded commitments to extend credit	$ 18

Guarantees and Contingent Li173

Guarantees and Contingent Liabilities - Future Minimum Payments Under Capital Leases and Noncancelable Operating Leases (Detail) $ in Millions	Dec. 31, 2016USD ($)
Capital Leases
Capital Leases, 2017	$ 17
Capital Leases, 2018	16
Capital Leases, 2019	14
Capital Leases, 2020	13
Capital Leases, 2021	10
Capital Leases, Thereafter	41
Total minimum capital lease payments	111
Less amount representing interest	39
Present value of net minimum capital lease payments	72
Operating Leases
Operating Leases, 2017	270
Operating Leases, 2018	243
Operating Leases, 2019	207
Operating Leases, 2020	166
Operating Leases, 2021	140
Operating Leases, Thereafter	490
Total minimum operating lease payments	$ 1,516

Guarantees and Contingent Li174

Guarantees and Contingent Liabilities - Summary of Other Guarantees and Contingent Liabilities (Detail) $ in Millions	Dec. 31, 2016USD ($)
Standby Letters of Credit [Member]
Guarantor Obligations [Line Items]
Carrying Amount	$ 61
Maximum Potential Future Payments	11,917
Third Party Borrowing Arrangements [Member]
Guarantor Obligations [Line Items]
Maximum Potential Future Payments	8
Securities Lending Indemnifications [Member]
Guarantor Obligations [Line Items]
Collateral Held	3,164
Maximum Potential Future Payments	3,083
Asset Sales [Member]
Guarantor Obligations [Line Items]
Carrying Amount	138
Maximum Potential Future Payments	6,211
Merchant Processing [Member]
Guarantor Obligations [Line Items]
Collateral Held	483
Carrying Amount	48
Maximum Potential Future Payments	91,040
Tender Option Bond Program Guarantee [Member]
Guarantor Obligations [Line Items]
Collateral Held	1,129
Maximum Potential Future Payments	1,114
Minimum Revenue Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum Potential Future Payments	9
Other Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum Potential Future Payments	$ 1,287

Guarantees and Contingent Li175

Guarantees and Contingent Liabilities - Contract or Notional Amount of Letters of Credit (Detail) $ in Millions	Dec. 31, 2016USD ($)
Standby Letters of Credit [Member]
Letters Of Credit [Line Items]
Contract or notional amount of letters of credit	$ 11,917
Commercial [Member]
Letters Of Credit [Line Items]
Contract or notional amount of letters of credit	346
Less Than One Year [Member] | Standby Letters of Credit [Member]
Letters Of Credit [Line Items]
Contract or notional amount of letters of credit	5,552
Less Than One Year [Member] | Commercial [Member]
Letters Of Credit [Line Items]
Contract or notional amount of letters of credit	328
Greater Than One Year [Member] | Standby Letters of Credit [Member]
Letters Of Credit [Line Items]
Contract or notional amount of letters of credit	6,365
Greater Than One Year [Member] | Commercial [Member]
Letters Of Credit [Line Items]
Contract or notional amount of letters of credit	$ 18

U.S. Bancorp (Parent Company) -

U.S. Bancorp (Parent Company) - Condensed Statement of Financial Position of Parent Company Only (Detail) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets
Available-for-sale securities	[1]	$ 66,284	$ 61,997
Other assets	[1]	31,674	29,725
Total assets		445,964	421,853
Liabilities and Shareholders' Equity
Short-term funds borrowed		13,963	27,877	$ 29,893
Long-term debt		33,323	32,078
Other liabilities		16,155	14,681
Shareholders' equity		47,298	46,131
Total liabilities and equity		445,964	421,853
Parent Company [Member]
Assets
Due from banks, principally interest-bearing		7,800	9,426
Available-for-sale securities		225	352
Other assets		1,052	983
Total assets		61,423	58,502
Liabilities and Shareholders' Equity
Short-term funds borrowed		22	25
Long-term debt		13,045	11,453
Other liabilities		1,058	893
Shareholders' equity		47,298	46,131
Total liabilities and equity		61,423	58,502
Bank Subsidiaries [Member] | Parent Company [Member]
Assets
Investments in subsidiaries		44,955	41,708
Advances to subsidiaries		3,800	3,150
Nonbank Subsidiaries [Member] | Parent Company [Member]
Assets
Investments in subsidiaries		2,326	2,060
Advances to subsidiaries		$ 1,265	$ 823
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

U.S. Bancorp (Parent Company177

U.S. Bancorp (Parent Company) - Condensed Income Statement of Parent Company Only (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income
Other income	$ 993	$ 907	$ 1,040
Total net revenue	21,308	20,306
Expense
Interest expense	1,639	1,401	1,453
Other expense	1,975	1,819	1,978
Income before income taxes and equity in undistributed income of subsidiaries	8,105	8,030	7,995
Applicable income taxes	2,161	2,097	2,087
Net income attributable to U.S. Bancorp	5,888	5,879	5,851
Parent Company [Member]
Income
Interest from subsidiaries	140	120	123
Other income	57	55	64
Total net revenue	2,301	4,078	4,075
Expense
Interest expense	327	292	335
Other expense	123	105	90
Total expense	450	397	425
Income before income taxes and equity in undistributed income of subsidiaries	1,851	3,681	3,650
Applicable income taxes	(97)	(207)	(94)
Income of parent company	1,948	3,888	3,744
Equity in undistributed income of subsidiaries	3,940	1,991	2,107
Net income attributable to U.S. Bancorp	5,888	5,879	5,851
Bank Subsidiaries [Member] | Parent Company [Member]
Income
Dividends from bank subsidiaries	2,100	3,900	3,850
Nonbank Subsidiaries [Member] | Parent Company [Member]
Income
Dividends from bank subsidiaries	$ 4	$ 3	$ 38

U.S. Bancorp (Parent Company178

U.S. Bancorp (Parent Company) - Condensed Statement of Cash Flows of Parent Company Only (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Activities
Net income attributable to U.S. Bancorp	$ 5,888	$ 5,879	$ 5,851
Adjustments to reconcile net income to net cash provided by operating activities
Other, net	487	787	43
Net cash provided by operating activities	5,336	8,782	5,332
Investing Activities
Other, net	322	(1,526)	506
Net cash (used in) provided by investing activities	(17,958)	(21,150)	(29,812)
Financing Activities
Net (decrease) increase in short-term borrowings	(13,914)	(2,016)	2,285
Proceeds from issuance of long-term debt	10,715	5,067	16,394
Principal payments or redemption of long-term debt	(9,495)	(5,311)	(4,128)
Proceeds from issuance of preferred stock		745
Proceeds from issuance of common stock	355	295	453
Repurchase of common stock	(2,556)	(2,190)	(2,200)
Cash dividends paid on preferred stock	(267)	(242)	(243)
Cash dividends paid on common stock	(1,810)	(1,777)	(1,726)
Net cash provided by (used in) financing activities	17,180	12,861	26,657
Change in cash and due from banks	4,558	493	2,177
Cash and due from banks at beginning of year	11,147	10,654	8,477
Cash and due from banks at end of year	15,705	11,147	10,654
Parent Company [Member]
Operating Activities
Net income attributable to U.S. Bancorp	5,888	5,879	5,851
Adjustments to reconcile net income to net cash provided by operating activities
Equity in undistributed income of subsidiaries	(3,940)	(1,991)	(2,107)
Other, net	75	507	48
Net cash provided by operating activities	2,023	4,395	3,792
Investing Activities
Proceeds from sales and maturities of investment securities	232	153	46
Purchases of investment securities	(120)	(47)	(39)
Net (increase) decrease in short-term advances to subsidiaries	(442)	(273)	984
Long-term advances to subsidiaries	(750)	(500)	(1,800)
Principal collected on long-term advances to subsidiaries	100		1,400
Other, net	(12)	(6)	(52)
Net cash (used in) provided by investing activities	(992)	(673)	539
Financing Activities
Net (decrease) increase in short-term borrowings	(3)	(152)	39
Proceeds from issuance of long-term debt	3,550		3,250
Principal payments or redemption of long-term debt	(1,926)	(1,750)	(1,500)
Proceeds from issuance of preferred stock		745
Proceeds from issuance of common stock	355	295	453
Repurchase of common stock	(2,556)	(2,190)	(2,200)
Cash dividends paid on preferred stock	(267)	(242)	(243)
Cash dividends paid on common stock	(1,810)	(1,777)	(1,726)
Net cash provided by (used in) financing activities	(2,657)	(5,071)	(1,927)
Change in cash and due from banks	(1,626)	(1,349)	2,404
Cash and due from banks at beginning of year	9,426	10,775	8,371
Cash and due from banks at end of year	$ 7,800	$ 9,426	$ 10,775

U.S. Bancorp (Parent Company179

U.S. Bancorp (Parent Company) - Additional Information (Detail)	Dec. 31, 2016
Receivables
Loan Limits to the company or individual affiliate	10.00%
Maximum limit of loans to the Company and all affiliates	20.00%