U.S. Bancorp (USB) 10-K 21 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Billions, except Share data, unless otherwise specified	Dec. 31, 2013	Jan. 31, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'USB	'	'
Entity Registrant Name	'US BANCORP \DE\	'	'
Entity Central Index Key	'0000036104	'	'
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	'	1,822,548,514	'
Entity Public Float	'	'	$66.70

Consolidated_Balance_Sheet

Consolidated Balance Sheet (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'		'
Cash and due from banks	$8,477		$8,252
Investment securities	'		'
Held-to-maturity (fair value $38,368 and $34,952, respectively; including $994 and $1,482 at fair value pledged as collateral, respectively)	38,920	[1]	34,389	[1]
Available-for-sale ($1,106 and $2,042 pledged as collateral, respectively)	40,935	[1]	40,139	[1]
Loans held for sale (including $3,263 and $7,957 of mortgage loans carried at fair value, respectively)	3,268		7,976
Loans	'		'
Commercial	70,033		66,223
Commercial real estate	39,885		36,953
Residential mortgages	51,156		44,018
Credit card	18,021		17,115
Other retail	47,678		47,712
Total loans, excluding covered loans	226,773		212,021
Covered loans	8,462		11,308
Total loans	235,235		223,329
Less allowance for loan losses	-4,250		-4,424
Net loans	230,985		218,905
Premises and equipment	2,606		2,670
Goodwill	9,205		9,143
Other intangible assets	3,529		2,706
Other assets (including $111 and $47 of trading securities at fair value pledged as collateral, respectively)	26,096	[1]	29,675	[1]
Total assets	364,021		353,855
Deposits	'		'
Noninterest-bearing	76,941		74,172
Interest-bearing	156,165		145,972
Time deposits greater than $100,000	29,017		29,039
Total deposits	262,123		249,183
Short-term borrowings	27,608		26,302
Long-term debt	20,049		25,516
Other liabilities	12,434		12,587
Total liabilities	322,214		313,588
Shareholders' equity	'		'
Preferred stock	4,756		4,769
Common stock, par value $0.01 a share - authorized: 4,000,000,000 shares; issued: 2013 and 2012 - 2,125,725,742 shares	21		21
Capital surplus	8,216		8,201
Retained earnings	38,667		34,720
Less cost of common stock in treasury: 2013 - 300,977,274 shares; 2012 - 256,294,227 shares	-9,476		-7,790
Accumulated other comprehensive income (loss)	-1,071		-923
Total U.S. Bancorp shareholders' equity	41,113		38,998
Noncontrolling interests	694		1,269
Total equity	41,807		40,267
Total liabilities and equity	$364,021		$353,855
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Consolidated_Balance_Sheet_Par

Consolidated Balance Sheet (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Held-to-maturity securities, fair value	$38,368,000,000	$34,952,000,000
Securities, pledged as collateral	2,100,000,000	3,500,000,000
Mortgage loans, carried at fair value	3,263,000,000	7,957,000,000
Time deposits	100,000	100,000
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)	300,977,274	256,294,227
Held-to-maturity Securities [Member]	'	'
Securities, pledged as collateral	994,000,000	1,482,000,000
Available-for-Sale Securities [Member]	'	'
Securities, pledged as collateral	1,106,000,000	2,042,000,000
Trading Securities [Member]	'	'
Securities, pledged as collateral	$111,000,000	$47,000,000

Consolidated_Statement_of_Inco

Consolidated Statement of Income (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest Income	'	'	'
Loans	$10,277	$10,558	$10,370
Loans held for sale	203	282	200
Investment securities	1,631	1,792	1,820
Other interest income	174	251	249
Total interest income	12,285	12,883	12,639
Interest Expense	'	'	'
Deposits	561	691	840
Short-term borrowings	353	442	531
Long-term debt	767	1,005	1,145
Total interest expense	1,681	2,138	2,516
Net interest income	10,604	10,745	10,123
Provision for credit losses	1,340	1,882	2,343
Net interest income after provision for credit losses	9,264	8,863	7,780
Noninterest Income	'	'	'
Credit and debit card revenue	965	892	1,073
Corporate payment products revenue	706	744	734
Merchant processing services	1,458	1,395	1,355
ATM processing services	327	346	452
Trust and investment management fees	1,139	1,055	1,000
Deposit service charges	670	653	659
Treasury management fees	538	541	551
Commercial products revenue	859	878	841
Mortgage banking revenue	1,356	1,937	986
Investment products fees	178	150	129
Securities gains (losses), net	'	'	'
Realized gains (losses), net	23	59	4
Total other-than-temporary impairment	-6	-62	-60
Portion of other-than-temporary impairment recognized in other comprehensive income	-8	-12	25
Total securities gains (losses), net	9	-15	-31
Other	569	743	1,011
Total noninterest income	8,774	9,319	8,760
Noninterest Expense	'	'	'
Compensation	4,371	4,320	4,041
Employee benefits	1,140	945	845
Net occupancy and equipment	949	917	999
Professional services	381	530	383
Marketing and business development	357	388	369
Technology and communications	848	821	758
Postage, printing and supplies	310	304	303
Other intangibles	223	274	299
Other	1,695	1,957	1,914
Total noninterest expense	10,274	10,456	9,911
Income before income taxes	7,764	7,726	6,629
Applicable income taxes	2,032	2,236	1,841
Net income	5,732	5,490	4,788
Net (income) loss attributable to noncontrolling interests	104	157	84
Net income attributable to U.S. Bancorp	5,836	5,647	4,872
Net income applicable to U.S. Bancorp common shareholders	$5,552	$5,383	$4,721
Earnings per common share	$3.02	$2.85	$2.47
Diluted earnings per common share	$3	$2.84	$2.46
Dividends declared per common share	$0.89	$0.78	$0.50
Average common shares outstanding	1,839	1,887	1,914
Average diluted common shares outstanding	1,849	1,896	1,923

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Income And Comprehensive Income [Abstract]	'	'	'
Net income	$5,732	$5,490	$4,788
Other Comprehensive Income (Loss)	'	'	'
Changes in unrealized gains and losses on securities available-for-sale	-1,223	715	920
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	8	12	-25
Changes in unrealized gains and losses on derivative hedges	37	-74	-343
Foreign currency translation	-34	14	-16
Changes in unrealized gains and losses on retirement plans	590	-543	-464
Reclassification to earnings of realized gains and losses	373	325	363
Income taxes related to other comprehensive income	101	-172	-166
Total other comprehensive income (loss)	-148	277	269
Comprehensive income	5,584	5,767	5,057
Comprehensive (income) loss attributable to noncontrolling interests	104	157	84
Comprehensive income attributable to U.S. Bancorp	$5,688	$5,924	$5,141

Consolidated_Statement_of_Shar

Consolidated Statement of Shareholders' Equity (USD $)	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]
In Millions
Beginning Balance at Dec. 31, 2010	$30,322	$21	$1,930	$8,294	$27,005	($6,262)	($1,469)	$29,519	$803
Shares, Beginning Balance at Dec. 31, 2010	'	1,921	'	'	'	'	'	'	'
Change in accounting principle	-2	'	'	'	-2	'	'	-2	'
Net income (loss)	4,788	'	'	'	'	'	'	'	'
Net (income) loss attributable to noncontrolling interests	-84	'	'	'	'	'	'	'	-84
Net income attributable to U.S. Bancorp	4,872	'	'	'	4,872	'	'	4,872	'
Other comprehensive income (loss)	269	'	'	'	'	'	269	269	'
Preferred stock dividends	-129	'	'	'	-129	'	'	-129	'
Common stock dividends	-961	'	'	'	-961	'	'	-961	'
Issuance of preferred stock	676	'	676	'	'	'	'	676	'
Issuance of common and treasury stock	193	'	'	-147	'	340	'	193	'
Issuance of common and treasury stock, shares	'	11	'	'	'	'	'	'	'
Purchase of treasury stock	-550	'	'	'	'	-550	'	-550	'
Purchase of treasury stock, shares	-22	-22	'	'	'	'	'	'	'
Distributions to noncontrolling interests	-80	'	'	'	'	'	'	'	-80
Purchase of noncontrolling interests	-11	'	'	-3	'	'	'	-3	-8
Net other changes in noncontrolling interests	362	'	'	'	'	'	'	'	362
Stock option and restricted stock grants	94	'	'	94	'	'	'	94	'
Ending Balance at Dec. 31, 2011	34,971	21	2,606	8,238	30,785	-6,472	-1,200	33,978	993
Shares, Ending Balance at Dec. 31, 2011	'	1,910	'	'	'	'	'	'	'
Net income (loss)	5,490	'	'	'	'	'	'	'	'
Net (income) loss attributable to noncontrolling interests	-157	'	'	'	'	'	'	'	-157
Net income attributable to U.S. Bancorp	5,647	'	'	'	5,647	'	'	5,647	'
Other comprehensive income (loss)	277	'	'	'	'	'	277	277	'
Preferred stock dividends	-238	'	'	'	-238	'	'	-238	'
Common stock dividends	-1,474	'	'	'	-1,474	'	'	-1,474	'
Issuance of preferred stock	2,163	'	2,163	'	'	'	'	2,163	'
Issuance of common and treasury stock	441	'	'	-119	'	560	'	441	'
Issuance of common and treasury stock, shares	'	18	'	'	'	'	'	'	'
Purchase of treasury stock	-1,878	'	'	'	'	-1,878	'	-1,878	'
Purchase of treasury stock, shares	-59	-59	'	'	'	'	'	'	'
Distributions to noncontrolling interests	-76	'	'	'	'	'	'	'	-76
Net other changes in noncontrolling interests	509	'	'	'	'	'	'	'	509
Stock option and restricted stock grants	82	'	'	82	'	'	'	82	'
Ending Balance at Dec. 31, 2012	40,267	21	4,769	8,201	34,720	-7,790	-923	38,998	1,269
Shares, Ending Balance at Dec. 31, 2012	1,900	1,869	'	'	'	'	'	'	'
Net income (loss)	5,732	'	'	'	'	'	'	'	'
Net (income) loss attributable to noncontrolling interests	-104	'	'	'	'	'	'	'	-104
Net income attributable to U.S. Bancorp	5,836	'	'	'	5,836	'	'	5,836	'
Other comprehensive income (loss)	-148	'	'	'	'	'	-148	-148	'
Redemption of preferred stock	-500	'	-500	8	-8	'	'	-500	'
Preferred stock dividends	-250	'	'	'	-250	'	'	-250	'
Common stock dividends	-1,631	'	'	'	-1,631	'	'	-1,631	'
Issuance of preferred stock	487	'	487	'	'	'	'	487	'
Issuance of common and treasury stock	550	'	'	-100	'	650	'	550	'
Issuance of common and treasury stock, shares	'	21	'	'	'	'	'	'	'
Purchase of treasury stock	-2,336	'	'	'	'	-2,336	'	-2,336	'
Purchase of treasury stock, shares	-65	-65	'	'	'	'	'	'	'
Distributions to noncontrolling interests	-62	'	'	'	'	'	'	'	-62
Net other changes in noncontrolling interests	-409	'	'	'	'	'	'	'	-409
Stock option and restricted stock grants	107	'	'	107	'	'	'	107	'
Ending Balance at Dec. 31, 2013	$41,807	$21	$4,756	$8,216	$38,667	($9,476)	($1,071)	$41,113	$694
Shares, Ending Balance at Dec. 31, 2013	1,800	1,825	'	'	'	'	'	'	'

Consolidated_Statement_of_Cash

Consolidated Statement of Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities	'	'	'
Net income attributable to U.S. Bancorp	$5,836	$5,647	$4,872
Adjustments to reconcile net income to net cash provided by operating activities	'	'	'
Provision for credit losses	1,340	1,882	2,343
Depreciation and amortization of premises and equipment	297	287	266
Amortization of intangibles	223	274	299
Provision for deferred income taxes	-69	49	748
(Gain) loss on sale of loans held for sale	-1,044	-2,889	-860
(Gain) loss on sale of securities and other assets	-74	-242	-25
Loans originated for sale in the secondary market, net of repayments	-56,698	-81,219	-46,366
Proceeds from sales of loans held for sale	61,681	82,302	48,094
Other, net	-46	1,867	449
Net cash provided by operating activities	11,446	7,958	9,820
Investing Activities	'	'	'
Proceeds from sales of available-for-sale investment securities	947	2,060	1,018
Proceeds from maturities of held-to-maturity investment securities	8,587	6,336	1,404
Proceeds from maturities of available-for-sale investment securities	10,147	15,374	12,713
Purchases of held-to-maturity investment securities	-13,218	-10,247	-18,500
Purchases of available-for-sale investment securities	-13,146	-16,605	-13,229
Net increase in loans outstanding	-12,331	-15,158	-13,418
Proceeds from sales of loans	819	1,895	820
Purchases of loans	-2,468	-2,741	-3,078
Acquisitions, net of cash acquired	-58	94	636
Other, net	-303	-1,261	-1,070
Net cash provided by (used in) investing activities	-21,024	-20,253	-32,704
Financing Activities	'	'	'
Net increase in deposits	12,940	18,050	24,846
Net increase (decrease) in short-term borrowings	1,306	-4,167	-2,205
Proceeds from issuance of long-term debt	2,041	4,966	3,611
Principal payments or redemption of long-term debt	-2,883	-11,415	-3,300
Proceeds from issuance of preferred stock	487	2,163	676
Proceeds from issuance of common stock	524	395	180
Redemption of preferred stock	-500	'	'
Repurchase of common stock	-2,282	-1,856	-514
Cash dividends paid on preferred stock	-254	-204	-118
Cash dividends paid on common stock	-1,576	-1,347	-817
Net cash provided by (used in) financing activities	9,803	6,585	22,359
Change in cash and due from banks	225	-5,710	-525
Cash and due from banks at beginning of period	8,252	13,962	14,487
Cash and due from banks at end of period	8,477	8,252	13,962
Supplemental Cash Flow Disclosures	'	'	'
Cash paid for income taxes	812	1,469	495
Cash paid for interest	1,759	2,218	2,563
Net noncash transfers to foreclosed property	323	564	702
Noncash transfer of investment securities available-for-sale to held-to-maturity	'	11,705	'
Acquisitions	'	'	'
Assets (sold) acquired	126	194	1,761
Liabilities sold (assumed)	-24	-260	-2,100
Net	$102	($66)	($339)

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
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, 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 generally accepted accounting principles 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, 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, in-store banking, small business banking, consumer lending, mortgage banking, workplace banking, student banking and 24-hour 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 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, most covered commercial and commercial real estate loans and related other real estate owned (“OREO”), funding, capital management, interest rate risk management, the net effect of transfer pricing related to average balances, income taxes not allocated to business lines, including most tax-advantaged investments, 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 24 “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) in shareholders’ equity. Declines in fair value related to 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 and are recorded at the amounts at which the securities were acquired or sold, plus accrued interest. The fair value of collateral received is continually monitored and additional collateral is obtained or requested to be returned to the Company as deemed appropriate.
	Equity Investments in Operating Entities
	Equity investments in public entities in which the Company’s ownership is less than 20 percent are 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 adopted new indemnification asset accounting guidance applicable to FDIC loss-sharing agreements. The guidance requires 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) to be amortized over the shorter of the remaining contractual term of the indemnification agreements or the remaining life of the covered assets. Prior to adoption of this guidance, 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. The adoption of this guidance did not materially affect the Company’s financial statements.
	Commitments to Extend Credit Unfunded commitments for residential mortgage loans intended to be held for sale are considered derivatives and recorded on the balance sheet at fair value with changes in fair value recorded in income. All other unfunded loan commitments are not considered derivatives and are not reported on the balance sheet. For loans purchased after January 1, 2009, the fair value of the unfunded credit commitments is 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 reserves 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 13-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 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 represents any 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, incorporation of loss history is factored 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 all the loan segments 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, internal review and other relevant business practices; 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 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.
	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 considered uncollectible.
	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, and placed on nonaccrual status in instances where a partial charge-off occurs unless the loan is well secured and in the process of collection. Loans and lines in a junior lien position secured by 1-4 family properties are placed on nonaccrual status at 120 days past due or when behind a first lien that has become 180 days or greater past due or placed on nonaccrual status. Any secured consumer lending segment loan whose borrower has had debt discharged through bankruptcy, for which the loan amount exceeds the fair value of the collateral, is charged down to the fair value of the related collateral and the remaining balance is placed on nonaccrual status. Credit card loans continue to accrue interest until the account is charged off. Credit cards are charged off at 180 days past due. Other retail loans not secured by 1-4 family properties are charged-off at 120 days past due; and revolving consumer lines are charged off at 180 days past due. Similar to credit cards, other retail loans are generally not placed on nonaccrual status because of the relative short period of time to charge-off. Certain retail customers having financial difficulties may have the terms of their credit card and other loan agreements modified to require only principal payments and, as such, are reported as nonaccrual.
	For all loan classes, interest payments received on nonaccrual loans are generally recorded as a reduction to the loan carrying amount. Interest payments are generally recorded as reductions to a loan’s carrying amount while a loan is on nonaccrual and are recognized as interest income upon payoff of the loan. 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 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. Those loans are classified as nonaccrual loans and interest income is 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. 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 these 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 U.S. 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 U.S. 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, 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.
	Credit card and other retail loan modifications are generally part of two distinct restructuring programs. The Company offers workout 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. The Company also provides modification programs to qualifying customers experiencing a temporary financial hardship in which reductions are made to monthly required minimum payments for up to 12 months. Balances related to these programs are generally frozen; however, accounts may be reopened upon successful exit of the program, in which account privileges may be restored.
	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 purposes of the Company’s accounting and disclosure 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 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. 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 further decreases or subsequent increases in fair value are 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 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.
	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 an 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
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 and Corporate Payment Products Revenue Credit and debit card revenue includes interchange income from consumer credit and debit cards, annual fees, and other transaction and account management fees. Corporate payment products revenue primarily includes interchange income from corporate and purchasing card transactions processed through card association networks and merchant discount income from closed loop network transactions. Interchange income is a fee paid by a merchant bank to the card-issuing bank through the interchange network. Interchange fees are set by the credit card associations and are based on cardholder purchase volumes. Merchant discount income is a fee paid by a merchant to the Company through the closed loop network. Merchant discount fees are set by the Company directly with the merchant. The Company records interchange and merchant discount income 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 expenses for rewards programs are also recorded within credit and debit card revenue and corporate payment products revenue. Payments to partners and expenses related to rewards programs are recorded when earned by the partner or customer.
Merchant Processing Services Merchant processing services revenue consists principally of transaction and account management fees charged to merchants for the electronic processing of transactions, net of interchange fees paid to the card-issuing bank, card association assessments, and revenue sharing amounts, and is 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.
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, including losses related to the repurchase of previously sold loans; 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 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.
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.
Other Significant Policies
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 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. In January 2014, the Financial Accounting Standards Board issued accounting guidance on the presentation of investment costs for qualified affordable housing projects on a net basis with the related tax benefits in income tax expense. This will permit the Company to apply this presentation to certain qualified affordable housing investments for which the costs were previously presented in other expense. The Company will adopt this guidance January 1, 2014 and does not expect a material impact to its financial statements.
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, discount rates, 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 during the period in which they occur.
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 plans’ 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 twelve 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 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 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 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.

Business_Combinations_and_Dive

Business Combinations and Divestitures	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combinations and Divestitures	'
	NOTE 2	Business Combinations and Divestitures
	In February 2013, the Company acquired Collective Point of Sale Solutions, a Canadian merchant processor. The Company recorded approximately $34 million of assets, including intangibles, and approximately $4 million of liabilities with this transaction.
	In November 2013, the Company acquired Quintillion Holding Company Limited, a provider of fund administration services to alternative investment funds. The Company recorded approximately $57 million of assets, including intangibles, and assumed approximately $10 million of liabilities with this transaction.
	In January 2012, the Company acquired the banking operations of BankEast, a subsidiary of BankEast Corporation, from the FDIC. This transaction did not include a loss sharing agreement. The Company acquired approximately $261 million of assets and assumed approximately $252 million of deposits from the FDIC with this transaction.
	In November 2012, the Company acquired the hedge fund administration servicing business of Alternative Investment Solutions, LLC. The Company recorded approximately $108 million of assets, including intangibles, and approximately $3 million of liabilities with this transaction.
	In December 2012, the Company acquired FSV Payment Systems, Inc., a prepaid card program manager with a proprietary processing platform. The Company recorded approximately $243 million of assets, including intangibles, and approximately $28 million of liabilities with this transaction.

Restrictions_on_Cash_and_Due_f

Restrictions on Cash and Due from Banks	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Restrictions on Cash and Due from Banks	'
	NOTE 3	Restrictions on Cash and Due from Banks
	The Federal Reserve Bank requires bank subsidiaries to maintain minimum average reserve balances, either in the form of cash or reserve balances held with the Federal Reserve Bank. The amount of those required reserve balances were approximately $1.8 billion and $1.7 billion at December 31, 2013 and 2012, respectively. At December 31, 2013 and 2012, the Company held $1.9 billion and $.9 billion, respectively, of balances at the Federal Reserve Bank. These balances are included in cash and due from banks on the Consolidated Balance Sheet.

Investment_Securities

Investment Securities	12 Months Ended
	Dec. 31, 2013
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:
			2013																				2012
									Unrealized Losses																						Unrealized Losses
	(Dollars in Millions)		Amortized			Unrealized			Other-than-				Other (f)				Fair Value						Amortized				Unrealized				Other-than-				Other (f)				Fair Value
			Cost			Gains			Temporary (e)														Cost				Gains				Temporary (e)
	Held-to-maturity (a)
	U.S. Treasury and agencies		$	3,114		$	5		$	–			$	(79	)		$	3,040					$	3,154			$	27			$	–			$	–			$	3,181
	Mortgage-backed securities
	Residential
	Agency			35,671			187			–				(665	)			35,193						31,064				545				–				(6	)			31,603
	Non-agency non-prime (d)			1			–			–				–				1						1				–				–				–				1
	Commercial non-agency			–			–			–				–				–						2				–				–				–				2
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			–			9			–				–				9						7				15				–				–				22
	Other			16			4			(1	)			(1	)			18						19				2				(3	)			(1	)			17
	Obligations of state and political subdivisions			12			–			–				–				12						20				1				–				–				21
	Obligations of foreign governments			7			–			–				–				7						7				–				–				–				7
	Other debt securities			99			–			–				(11	)			88						115				–				–				(17	)			98
	Total held-to-maturity		$	38,920		$	205		$	(1	)		$	(756	)		$	38,368					$	34,389			$	590			$	(3	)		$	(24	)		$	34,952
	Available-for-sale (b)
	U.S. Treasury and agencies		$	1,108		$	4		$	–			$	(67	)		$	1,045					$	1,211			$	16			$	–			$	(1	)		$	1,226
	Mortgage-backed securities
	Residential
	Agency			31,633			449			–				(529	)			31,553						28,754				746				–				(5	)			29,495
	Non-agency
	Prime (c)			486			4			(8	)			(4	)			478						641				3				(16	)			(4	)			624
	Non-prime (d)			297			5			(5	)			–				297						372				4				(20	)			(1	)			355
	Commercial agency			148			4			–				–				152						185				8				–				–				193
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			20			4			–				–				24						32				10				–				–				42
	Other			616			13			–				–				629						579				14				–				(1	)			592
	Obligations of state and political subdivisions			5,673			116			–				(51	)			5,738						6,059				396				–				–				6,455
	Obligations of foreign governments			6			–			–				–				6						6				–				–				–				6
	Corporate debt securities			734			–			–				(94	)			640						814				2				–				(85	)			731
	Perpetual preferred securities			205			24			–				(17	)			212						205				27				–				(14	)			218
	Other investments			133			28			–				–				161						182				20				–				–				202
	Total available-for-sale		$	41,059		$	651		$	(13	)		$	(762	)		$	40,935					$	39,040			$	1,246			$	(36	)		$	(111	)		$	40,139
	(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 6.0 years at December 31, 2013, compared with 4.1 years at December 31, 2012. The corresponding weighted-average yields were 2.64 percent and 2.93 percent, respectively. The weighted-average maturity of the held-to-maturity investment securities was 4.5 years at December 31, 2013, and 3.3 years at December 31, 2012. The corresponding weighted-average yields were 2.00 percent and 1.94 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, 2013, 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 $17.3 billion at December 31, 2013, and $20.1 billion at December 31, 2012, 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 delivered under these types of arrangements had a fair value of $2.1 billion at December 31, 2013, and $3.5 billion at December 31, 2012.
	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)		2013			2012			2011
	Taxable		$	1,375		$	1,515		$	1,517
	Non-taxable			256			277			303
	Total interest income from investment securities		$	1,631		$	1,792		$	1,820
	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)		2013			2012			2011
	Realized gains		$	23		$	158		$	11
	Realized losses			–			(99	)		(7	)
	Net realized gains (losses)		$	23		$	59		$	4
	Income tax (benefit) on net realized gains (losses)		$	9		$	23		$	2
	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, 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 following table summarizes other-than-temporary impairment by investment category:
			2013												2012														2011
	Year Ended December 31 (Dollars in Millions)		Losses			Other Gains			Total						Losses				Other Gains				Total						Losses				Other Gains				Total
			Recorded in			(Losses) (c)									Recorded				(Losses) (c)										Recorded				(Losses) (c)
Earnings						in Earnings													in Earnings
Available-for-sale
Mortgage-backed securities
Non-agency residential
Prime (a)		$	(6	)	$	2		$	(4	)				$	(12	)		$	(9	)		$	(21	)				$	(3	)		$	(5	)		$	(8	)
Non-prime (b)			(8	)		6			(2	)					(33	)			21				(12	)					(24	)			(23	)			(47	)
Commercial non-agency			–			–			–						(1	)			(1	)			(2	)					–				–				–
Other asset-backed securities			–			–			–						(1	)			1				–						(4	)			3				(1	)
Obligations of state and political subdivisions			–			–			–						–				–				–						(4	)			–				(4	)
Perpetual preferred securities			–			–			–						(27	)			–				(27	)					–				–				–
Total available-for-sale		$	(14	)	$	8		$	(6	)				$	(74	)		$	12			$	(62	)				$	(35	)		$	(25	)		$	(60	)
(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)	Losses represent the non-credit portion of other-than-temporary impairment recorded in other comprehensive income (loss) for investment securities determined to be other-than-temporarily impaired during the period. Gains represent recoveries in the fair value of securities that had non-credit other-than-temporary impairment during the period.
The Company determined the 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) was measured as the difference between that discounted amount and the fair value of each investment security. For perpetual preferred securities determined to be other-than-temporarily impaired, the Company recorded a loss in earnings for the entire difference between the securities’ fair value and their amortized cost.
The following table includes the ranges for significant assumptions used for those available-for-sale non-agency mortgage-backed securities determined to be other-than-temporarily impaired:
		Prime (a)												Non-Prime (b)
		Minimum			Maximum			Average						Minimum				Maximum				Average
December 31, 2013
Estimated lifetime prepayment rates			7	%		18	%		15	%					4	%			9	%			5	%
Lifetime probability of default rates			3			7			5						7				12				9
Lifetime loss severity rates			30			50			48						50				65				58
December 31, 2012
Estimated lifetime prepayment rates			6	%		22	%		14	%					3	%			10	%			6	%
Lifetime probability of default rates			3			6			4						3				10				7
Lifetime loss severity rates			40			50			47						45				65				56
(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.
Changes in the credit losses on debt securities (excluding perpetual preferred securities) are summarized as follows:
Year Ended December 31 (Dollars in Millions)		2013			2012			2011
Balance at beginning of period		$	134		$	298		$	358
Additions to Credit Losses Due to Other-than-temporary Impairments
Credit losses on securities not previously considered other-than-temporarily impaired			–			6			7
Decreases in expected cash flows on securities for which other-than-temporary impairment was previously recognized			14			41			28
Total other-than-temporary impairment on debt securities			14			47			35
Other Changes in Credit Losses
Increases in expected cash flows			(2	)		(15	)		(21	)
Realized losses (a)			(23	)		(39	)		(73	)
Credit losses on security sales and securities expected to be sold			(7	)		(157	)		(1	)
Balance at end of period		$	116		$	134		$	298
(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, 2013, 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, 2013:
		Less Than 12 Months								12 Months or Greater										Total
(Dollars in Millions)		Fair Value			Unrealized					Fair Value				Unrealized						Fair Value				Unrealized
					Losses									Losses										Losses
Held-to-maturity
U.S. Treasury and agencies		$	1,085		$	(79	)			$	–			$	–					$	1,085			$	(79	)
Mortgage-backed securities
Residential agency			23,922			(647	)				373				(18	)					24,295				(665	)
Other asset-backed securities			–			–					10				(2	)					10				(2	)
Obligations of state and political subdivisions			3			–					–				–						3				–
Other debt securities			–			–					12				(11	)					12				(11	)
Total held-to-maturity		$	25,010		$	(726	)			$	395			$	(31	)				$	25,405			$	(757	)
Available-for-sale
U.S. Treasury and agencies		$	849		$	(59	)			$	93			$	(8	)				$	942			$	(67	)
Mortgage-backed securities
Residential
Agency			14,015			(484	)				1,056				(45	)					15,071				(529	)
Non-agency (a)
Prime (b)			65			(1	)				182				(11	)					247				(12	)
Non-prime (c)			74			(1	)				57				(4	)					131				(5	)
Other asset-backed securities			23			–					3				–						26				–
Obligations of state and political subdivisions			1,479			(51	)				10				–						1,489				(51	)
Corporate debt securities			223			(5	)				418				(89	)					641				(94	)
Perpetual preferred securities			–			–					116				(17	)					116				(17	)
Total available-for-sale		$	16,728		$	(601	)			$	1,935			$	(174	)				$	18,663			$	(775	)
(a)	The Company has $17 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 corporate debt issued with high investment grade credit ratings or agency mortgage-backed 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, 2013, 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, 2013
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)		2013			2012
	Commercial
	Commercial		$	64,762		$	60,742
	Lease financing			5,271			5,481
	Total commercial			70,033			66,223
	Commercial Real Estate
	Commercial mortgages			32,183			31,005
	Construction and development			7,702			5,948
	Total commercial real estate			39,885			36,953
	Residential Mortgages
	Residential mortgages			37,545			32,648
	Home equity loans, first liens			13,611			11,370
	Total residential mortgages			51,156			44,018
	Credit Card			18,021			17,115
	Other Retail
	Retail leasing			5,929			5,419
	Home equity and second mortgages			15,442			16,726
	Revolving credit			3,276			3,332
	Installment			5,709			5,463
	Automobile			13,743			12,593
	Student			3,579			4,179
	Total other retail			47,678			47,712
	Total loans, excluding covered loans			226,773			212,021
	Covered Loans			8,462			11,308
	Total loans		$	235,235		$	223,329
	The Company had loans of $77.2 billion at December 31, 2013, and $74.1 billion at December 31, 2012, pledged at the Federal Home Loan Bank (“FHLB”), and loans of $53.0 billion at December 31, 2013, and $48.6 billion at December 31, 2012, 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 and equipment. For details of the Company’s commercial portfolio by industry group and geography as of December 31, 2013 and 2012, 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, 2013 and 2012, see Table 8 included in Management’s Discussion and Analysis which is incorporated by reference into these Notes to Consolidated Financial Statements. Such loans are collateralized by the related property. The Company has an equity interest in a joint venture, that it accounts for under the equity method, whose principal activities are to lend to entities that develop land, and construct and sell residential homes. The Company provides a warehousing line to this joint venture. Warehousing advances to this joint venture are repaid when the sale of loans is completed or the real estate is permanently refinanced by others. At December 31, 2013 and 2012, the Company had $205 million and $486 million, respectively, of outstanding advances to this joint venture. These advances are included in commercial real estate loans.
	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 $556 million at December 31, 2013, and $753 million at December 31, 2012. 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)		2013			2012			2011
	Balance at beginning of period		$	1,709		$	2,619		$	2,890
	Purchases			–			13			100
	Accretion			(499	)		(437	)		(451	)
	Disposals			(172	)		(208	)		(67	)
	Reclassifications from nonaccretable difference (a)			258			454			184
	Other (b)			359			(732	)		(37	)
	Balance at end of period		$	1,655		$	1,709		$	2,619
	(a)	Primarily relates to changes in expected credit performance.
	(b)	The amount for the year ended December 31, 2013, primarily represents the reclassification of unamortized decreases in the FDIC asset (which are now presented as a separate component within the covered assets table on page 101), partially offset by the impact of changes in expectations about retaining covered single-family loans beyond the term of the indemnification agreements. The amount for the year end December 31, 2012, primarily represents a change in the Company’s expectations regarding potential sale of modified covered loans at the end of the indemnification agreements which results in a reduction in the expected contractual interest payments included in the accretable balance for those loans that may be sold.
	Allowance for Credit Losses The allowance for credit losses reserves 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				Total
						Real Estate			Mortgages			Card			Retail				Excluding				Loans				Loans
																			Covered Loans
	Balance at December 31, 2010		$	1,104		$	1,291		$	820		$	1,395		$	807			$	5,417			$	114			$	5,531
	Add
	Provision for credit losses			312			361			596			431			628				2,328				15				2,343
	Deduct
	Loans charged off			516			543			502			922			733				3,216				13				3,229
	Less recoveries of loans charged off			(110	)		(45	)		(13	)		(88	)		(129	)			(385	)			(1	)			(386	)
	Net loans charged off			406			498			489			834			604				2,831				12				2,843
	Other changes (a)			–			–			–			–			–				–				(17	)			(17	)
	Balance at December 31, 2011		$	1,010		$	1,154		$	927		$	992		$	831			$	4,914			$	100			$	5,014
	Add
	Provision for credit losses			316			(131	)		446			571			558				1,760				122				1,882
	Deduct
	Loans charged off			378			242			461			769			666				2,516				11				2,527
	Less recoveries of loans charged off			(103	)		(76	)		(23	)		(102	)		(125	)			(429	)			(1	)			(430	)
	Net loans charged off			275			166			438			667			541				2,087				10				2,097
	Other changes (a)			–			–			–			(33	)		–				(33	)			(33	)			(66	)
Balance at December 31, 2012		$	1,051		$	857		$	935		$	863		$	848			$	4,554			$	179			$	4,733
Add
Provision for credit losses			144			(114	)		212			677			351				1,270				70				1,340
Deduct
Loans charged off			246			92			297			739			523				1,897				37				1,934
Less recoveries of loans charged off			(126	)		(125	)		(25	)		(83	)		(105	)			(464	)			(5	)			(469	)
Net loans charged off			120			(33	)		272			656			418				1,433				32				1,465
Other changes (a)			–			–			–			–			–				–				(71	)			(71	)
Balance at December 31, 2013		$	1,075		$	776		$	875		$	884		$	781			$	4,391			$	146			$	4,537
(a)	Includes net changes in credit losses to be reimbursed by the FDIC and for the year ended December 31, 2013, 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.
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
					Real Estate			Mortgages			Card			Retail				Excluding				Loans				Loans
																		Covered Loans
Allowance Balance at December 31, 2013 Related to
Loans individually evaluated for impairment (a)		$	15		$	17		$	–		$	–		$	–			$	32			$	–			$	32
TDRs collectively evaluated for impairment			19			26			329			87			55				516				4				520
Other loans collectively evaluated for impairment			1,041			700			546			797			726				3,810				5				3,815
Loans acquired with deteriorated credit quality			–			33			–			–			–				33				137				170
Total allowance for credit losses		$	1,075		$	776		$	875		$	884		$	781			$	4,391			$	146			$	4,537
Allowance Balance at December 31, 2012 Related to
Loans individually evaluated for impairment (a)		$	10		$	30		$	–		$	–		$	–			$	40			$	–			$	40
TDRs collectively evaluated for impairment			28			29			446			153			97				753				1				754
Other loans collectively evaluated for impairment			1,013			791			489			710			751				3,754				17				3,771
Loans acquired with deteriorated credit quality			–			7			–			–			–				7				161				168
Total allowance for credit losses		$	1,051		$	857		$	935		$	863		$	848			$	4,554			$	179			$	4,733
(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				Total
					Real Estate			Mortgages			Card			Retail				Excluding				Loans (b)				Loans
																		Covered Loans
December 31, 2013
Loans individually evaluated for impairment (a)		$	197		$	237		$	–		$	–		$	–			$	434			$	62			$	496
TDRs collectively evaluated for impairment			155			358			5,064			310			269				6,156				87				6,243
Other loans collectively evaluated for impairment			69,680			39,128			46,090			17,711			47,409				220,018				4,539				224,557
Loans acquired with deteriorated credit quality			1			162			2			–			–				165				3,774				3,939
Total loans		$	70,033		$	39,885		$	51,156		$	18,021		$	47,678			$	226,773			$	8,462			$	235,235
December 31, 2012
Loans individually evaluated for impairment (a)		$	171		$	510		$	–		$	–		$	–			$	681			$	48			$	729
TDRs collectively evaluated for impairment			185			391			4,199			442			313				5,530				145				5,675
Other loans collectively evaluated for impairment			65,863			35,952			39,813			16,673			47,399				205,700				5,814				211,514
Loans acquired with deteriorated credit quality			4			100			6			–			–				110				5,301				5,411
Total loans		$	66,223		$	36,953		$	44,018		$	17,115		$	47,712			$	212,021			$	11,308			$	223,329
(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 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 process 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
					Past Due			More Past Due
December 31, 2013
Commercial		$	69,587		$	257		$	55		$	134		$	70,033
Commercial real estate			39,459			94			29			303			39,885
Residential mortgages (a)			49,695			358			333			770			51,156
Credit card			17,507			226			210			78			18,021
Other retail			47,156			245			86			191			47,678
Total loans, excluding covered loans			223,404			1,180			713			1,476			226,773
Covered loans			7,693			166			476			127			8,462
Total loans		$	231,097		$	1,346		$	1,189		$	1,603		$	235,235
December 31, 2012
Commercial		$	65,701		$	341		$	58		$	123		$	66,223
Commercial real estate			36,241			158			8			546			36,953
Residential mortgages (a)			42,728			348			281			661			44,018
Credit card			16,525			227			217			146			17,115
Other retail			47,109			290			96			217			47,712
Total loans, excluding covered loans			208,304			1,364			660			1,693			212,021
Covered loans			9,900			359			663			386			11,308
Total loans		$	218,204		$	1,723		$	1,323		$	2,079		$	223,329
(a)	At December 31, 2013, $440 million of loans 30–89 days past due and $3.7 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 Department of Veterans Affairs, were classified as current, compared with $441 million and $3.2 billion at December 31, 2012, 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, 2013 and 2012, see Table 16 included in Management’s Discussion and Analysis which is incorporated by reference into these Notes to Consolidated Financial Statements.
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
					Mention						Criticized
December 31, 2013
Commercial		$	68,075		$	1,013		$	945		$	1,958		$	70,033
Commercial real estate			38,113			616			1,156			1,772			39,885
Residential mortgages (b)			50,152			5			999			1,004			51,156
Credit card			17,733			–			288			288			18,021
Other retail			47,313			27			338			365			47,678
Total loans, excluding covered loans			221,386			1,661			3,726			5,387			226,773
Covered loans			8,160			18			284			302			8,462
Total loans		$	229,546		$	1,679		$	4,010		$	5,689		$	235,235
Total outstanding commitments		$	470,046		$	2,939		$	4,812		$	7,751		$	477,797
December 31, 2012
Commercial		$	63,906		$	1,114		$	1,203		$	2,317		$	66,223
Commercial real estate			34,096			621			2,236			2,857			36,953
Residential mortgages (b)			42,897			18			1,103			1,121			44,018
Credit card			16,752			–			363			363			17,115
Other retail			47,294			36			382			418			47,712
Total loans, excluding covered loans			204,945			1,789			5,287			7,076			212,021
Covered loans			10,786			61			461			522			11,308
Total loans		$	215,731		$	1,850		$	5,748		$	7,598		$	223,329
Total outstanding commitments		$	442,047		$	3,231		$	6,563		$	9,794		$	451,841
(a)	Classified rating on consumer loans primarily based on delinquency status.
(b)	At December 31, 2013, $3.7 billion of GNMA loans 90 days or more past due and $2.6 billion of 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, compared with $3.2 billion and $2.4 billion at December 31, 2012, 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			Unpaid			Valuation			Commitments
		Recorded			Principal			Allowance			to Lend
		Investment (a)			Balance						Additional
											Funds
December 31, 2013
Commercial		$	382		$	804		$	36		$	54
Commercial real estate			693			1,322			51			40
Residential mortgages			2,767			3,492			308			–
Credit card			310			310			87			–
Other retail			391			593			59			14
Total impaired loans, excluding GNMA and covered loans			4,543			6,521			541			108
Loans purchased from GNMA mortgage pools			2,607			2,607			28			–
Covered loans			452			1,008			30			4
Total		$	7,602		$	10,136		$	599		$	112
December 31, 2012
Commercial		$	404		$	1,200		$	40		$	39
Commercial real estate			1,077			2,251			70			4
Residential mortgages			2,748			3,341			415			–
Credit card			442			442			153			–
Other retail			443			486			101			3
Total impaired loans, excluding GNMA and covered loans			5,114			7,720			779			46
Loans purchased from GNMA mortgage pools			1,778			1,778			39			–
Covered loans			767			1,584			20			12
Total		$	7,659		$	11,082		$	838		$	58
(a)	Substantially all loans classified as impaired at December 31, 2013 and 2012, had an associated allowance for credit losses. The total amount of interest income recognized during 2013 on loans classified as impaired at December 31, 2013, excluding those acquired with deteriorated credit quality, was $233 million, compared to what would have been recognized at the original contractual terms of the loans of $399 million.
Additional information on impaired loans for the years ended December 31 follows:
(Dollars in Millions)		Average			Interest
		Recorded			Income
		Investment			Recognized
2013
Commercial		$	382		$	29
Commercial real estate			889			39
Residential mortgages			2,749			134
Credit card			366			16
Other retail			424			24
Total impaired loans, excluding GNMA and covered loans			4,810			242
Loans purchased from GNMA mortgage pools			1,967			100
Covered loans			561			27
Total		$	7,338		$	369
2012
Commercial		$	470		$	18
Commercial real estate			1,314			43
Residential mortgages			2,717			130
Credit card			510			28
Other retail			301			19
Total impaired loans, excluding GNMA and covered loans			5,312			238
Loans purchased from GNMA mortgage pools			1,448			73
Covered loans			980			29
Total		$	7,740		$	340
2011
Commercial		$	534		$	12
Commercial real estate			1,537			18
Residential mortgages			2,557			100
Credit card			485			15
Other retail			164			5
Total impaired loans, excluding GNMA and covered loans			5,277			150
Loans purchased from GNMA mortgage pools			710			25
Covered loans			780			11
Total		$	6,767		$	186
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			Post-Modification
		of Loans			Outstanding			Outstanding
					Loan			Loan
					Balance			Balance
2013
Commercial			2,429		$	166		$	155
Commercial real estate			165			205			198
Residential mortgages			2,179			309			304
Credit card			26,669			160			161
Other retail			4,290			103			102
Total loans, excluding GNMA and covered loans			35,732			943			920
Loans purchased from GNMA mortgage pools			8,878			1,121			1,066
Covered loans			123			94			72
Total loans			44,733		$	2,158		$	2,058
2012
Commercial			4,843		$	307		$	272
Commercial real estate			312			493			461
Residential mortgages			4,616			638			623
Credit card			49,320			241			255
Other retail			10,461			279			275
Total loans, excluding GNMA and covered loans			69,552			1,958			1,886
Loans purchased from GNMA mortgage pools			9,518			1,280			1,245
Covered loans			192			277			263
Total loans			79,262		$	3,515		$	3,394
2011
Commercial			5,285		$	456		$	427
Commercial real estate			506			1,078			1,060
Residential mortgages			3,611			708			704
Credit card			55,951			322			321
Other retail			4,028			73			72
Total loans, excluding GNMA and covered loans			69,381			2,637			2,584
Loans purchased from GNMA mortgage pools			9,569			1,277			1,356
Covered loans			283			604			575
Total loans			79,233		$	4,518		$	4,515
Residential mortgages, home equity and second mortgages, and loans purchased from Government National Mortgage Association (“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 2013, at December 31, 2013, 416 residential mortgages, 10 home equity and second mortgage loans and 2,536 loans purchased from GNMA mortgage pools with outstanding balances of $58 million, $1 million and $328 million, respectively, were in a trial period and have estimated post-modification balances of $47 million, $1 million and $307 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
		of Loans			Defaulted
2013
Commercial			642		$	46
Commercial real estate			87			102
Residential mortgages			1,099			163
Credit card			6,640			37
Other retail			1,841			80
Total loans, excluding GNMA and covered loans			10,309			428
Loans purchased from GNMA mortgage pools			4,972			640
Covered loans			63			49
Total loans			15,344		$	1,117
2012
Commercial			859		$	48
Commercial real estate			111			232
Residential mortgages			1,073			146
Credit card			9,774			54
Other retail			1,818			56
Total loans, excluding GNMA and covered loans			13,635			536
Loans purchased from GNMA mortgage pools			1,245			177
Covered loans			68			97
Total loans			14,948		$	810
2011
Commercial			665		$	26
Commercial real estate			64			67
Residential mortgages			623			127
Credit card			7,108			36
Other retail			557			13
Total loans, excluding GNMA and covered loans			9,017			269
Loans purchased from GNMA mortgage pools			857			124
Covered loans			11			26
Total loans			9,885		$	419
In addition to the defaults in the table above, for the year ended December 31, 2013, the Company had a total of 591 residential mortgage loans, home equity and second mortgage loans and loans purchased from GNMA mortgage pools with aggregate outstanding balances of $78 million 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.
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:
		2013														2012
(Dollars in Millions)		Purchased			Purchased			Other			Total					Purchased				Purchased				Other				Total
		Impaired			Nonimpaired			Assets								Impaired				Nonimpaired				Assets
		Loans			Loans											Loans				Loans
Commercial loans		$	–		$	32		$	–		$	32				$	–			$	143			$	–			$	143
Commercial real estate loans			738			1,494			–			2,232					1,323				2,695				–				4,018
Residential mortgage loans			3,037			890			–			3,927					3,978				1,109				–				5,087
Credit card loans			–			5			–			5					–				5				–				5
Other retail loans			–			666			–			666					–				775				–				775
Losses reimbursable by the FDIC (a)			–			–			798			798					–				–				1,280				1,280
Unamortized changes in FDIC asset (b)			–			–			802			802					–				–				–				–
Covered loans			3,775			3,087			1,600			8,462					5,301				4,727				1,280				11,308
Foreclosed real estate			–			–			97			97					–				–				197				197
Total covered assets		$	3,775		$	3,087		$	1,697		$	8,559				$	5,301			$	4,727			$	1,477			$	11,505
(a)	Relates to loss sharing agreements with remaining terms up to six 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. These amounts were presented within the separate loan categories prior to January 1, 2013.
At December 31, 2013, $5 million of the purchased impaired loans included in covered loans were classified as nonperforming assets, compared with $82 million at December 31, 2012, because the expected cash flows are primarily based on the liquidation of underlying collateral and the timing and amount of the cash flows could not be reasonably estimated. Interest income is recognized on other 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, 2013
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)		2013			2012
	Aggregate future minimum lease payments to be received		$	11,074		$	10,738
	Unguaranteed residual values accruing to the lessor’s benefit			783			890
	Unearned income			(1,045	)		(1,123	)
	Initial direct costs			189			175
	Total net investment in sales-type and direct financing leases (a)		$	11,001		$	10,680
	(a)	The accumulated allowance for uncollectible minimum lease payments was $68 million and $80 million at December 31, 2013 and 2012, respectively.
	The minimum future lease payments to be received from sales-type and direct financing leases were as follows at December 31, 2013:
	(Dollars in Millions)
	2014		$	3,891
	2015			3,240
	2016			2,518
	2017			826
	2018			275
	Thereafter			324

Accounting_for_Transfers_and_S

Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities	12 Months Ended
	Dec. 31, 2013
Transfers And Servicing [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.
	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 the development of affordable housing, community development and renewable energy sources. Some of these investments support the Company’s regulatory compliance with the Community Reinvestment Act. The Company’s investments in these entities are designed to generate a return primarily through the realization of federal and state income tax credits, and other tax benefits, over specified time periods. The Company realized federal and state income tax credits related to these investments of $1.5 billion, $883 million and $756 million for the years ended December 31, 2013, 2012 and 2011, respectively. These tax credits are recognized as a reduction of tax expense or, for certain investments, as a reduction to the related investment asset. The Company also recognized, in its Consolidated Statement of Income, $1.2 billion, $1.0 billion and $806 million of costs related to these investments for the years ended December 31, 2013, 2012 and 2011, respectively, of which $604 million, $482 million and $278 million, respectively, was included in tax expense and the remainder was included in noninterest expense.
	During 2013, the Company transferred its control over the most significant activities of certain community development and tax-advantaged investment VIEs to a third party manager. The third party manager provides a guarantee to these VIEs related to the occurrence of certain tax credit recapture events and, therefore, has an obligation to absorb certain losses that could potentially be significant to the VIEs. Previously, the Company consolidated these VIEs because it had a controlling financial interest in the entities. After the transfer of control to the third party manager, the Company no longer had a controlling financial interest and deconsolidated the VIEs. The deconsolidation resulted in a decrease in both assets and liabilities, primarily other assets and long-term debt, respectively, of approximately $4.6 billion. The deconsolidation, and remeasurement of the Company’s investment in these unconsolidated VIEs to fair value, did not materially impact the Company’s Consolidated Statement of Income. The total amount of the Company’s investment in the VIEs was $957 million at December 31, 2013 and is reported in other assets.
	In addition, the Company sponsors entities to which it transfers tax-advantaged investments. At December 31, 2013, approximately $2.5 billion of the Company’s assets and $1.8 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 $7.1 billion and $5.2 billion, respectively, at December 31, 2012, which included VIEs related to these asset transfers and, also, the VIEs for which control transferred in 2013. 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 sold to others with a guarantee.
	In addition, the Company 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, 2013, $116 million of the held-to-maturity investment securities on the Company’s Consolidated Balance Sheet were related to the conduit, compared with $144 million at December 31, 2012.
	The Company also 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, 2013, $4.6 billion of available-for-sale securities and $4.6 billion of short-term borrowings on the Consolidated Balance Sheet were related to the tender option bond program, compared with $5.3 billion of available-for-sale securities and $5.0 billion of short-term borrowings at December 31, 2012.
	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 generally are carried in other assets on the Consolidated Balance Sheet. The Company’s investments in unconsolidated VIEs at December 31, 2013 ranged from less than $1 million to $37 million, with an aggregate amount of $2.6 billion, net of $1.7 billion of liabilities recorded primarily for unfunded capital commitments of the Company to specific project sponsors. The Company’s investments in unconsolidated VIEs at December 31, 2012, ranged from less than $1 million to $58 million, with an aggregate amount of $1.9 billion, net of liabilities of $1.3 billion recorded primarily for unfunded capital commitments. While the Company believes potential losses from these investments are remote, the Company’s maximum exposure to loss from these unconsolidated VIEs was $7.4 billion at December 31, 2013 and $5.2 billion at December 31, 2012. The maximum exposure to loss was primarily related to community development tax-advantaged investments and included $2.5 billion at December 31, 2013 and $1.8 billion at December 31, 2012, on the Company’s Consolidated Balance Sheet, and $4.9 billion at December 31, 2013 and $3.3 billion at December 31, 2012, of previously recorded tax credits which remain subject to recapture by taxing authorities based on compliance features required to be met at the project level. The remaining amounts related to investments in private investment funds and partnerships for which the maximum exposure to loss included amounts recorded on the Consolidated Balance Sheet and any unfunded commitments. The maximum exposure was determined by assuming a scenario where the separate investments within the individual private funds become worthless, and the community-based business and housing projects and related tax credits completely fail and do not meet certain government compliance requirements.

Premises_and_Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2013
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)		2013			2012
	Land		$	529		$	534
	Buildings and improvements			3,256			3,222
	Furniture, fixtures and equipment			2,593			2,543
	Capitalized building and equipment leases			103			97
	Construction in progress			24			42
				6,505			6,438
	Less accumulated depreciation and amortization			(3,899	)		(3,768	)
	Total		$	2,606		$	2,670

Mortgage_Servicing_Rights

Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Mortgage Servicing Rights	'
	NOTE 9	Mortgage Servicing Rights
	The Company serviced $226.8 billion of residential mortgage loans for others at December 31, 2013, and $215.6 billion at December 31, 2012. 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 $192 million, $102 million and $183 million for the years ended December 31, 2013, 2012 and 2011, respectively. Loan servicing fees, not including valuation changes, included in mortgage banking revenue, were $754 million, $720 million and $651 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	Changes in fair value of capitalized MSRs for the years ended December 31, are summarized as follows:
	(Dollars in Millions)		2013			2012			2011
	Balance at beginning of period		$	1,700		$	1,519		$	1,837
	Rights purchased			8			42			35
	Rights capitalized			769			957			619
	Changes in fair value of MSRs
	Due to fluctuations in market interest rates (a)			617			(249	)		(619	)
	Due to revised assumptions or models (b)			33			(21	)		33
	Other changes in fair value (c)			(447	)		(548	)		(386	)
	Balance at end of period		$	2,680		$	1,700		$	1,519
	(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 discount rate, as well as the impact of any model changes.
	(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:
			2013																					2012
	(Dollars in Millions)		Down			Down			Down			Up			Up				Up					Down			Down			Down			Up			Up			Up
			100 bps			50 bps			25 bps			25 bps			50 bps				100 bps					100 bps			50 bps			25 bps			25 bps			50 bps			100 bps
	MSR portfolio		$	(435	)	$	(199	)	$	(93	)	$	82		$	154			$	287				$	(370	)	$	(217	)	$	(118	)	$	126		$	249		$	480
	Derivative instrument hedges			399			194			91			(82	)		(157	)			(301	)				473			249			124			(121	)		(243	)		(486	)
	Net sensitivity		$	(36	)	$	(5	)	$	(2	)	$	–		$	(3	)		$	(14	)			$	103		$	32		$	6		$	5		$	6		$	(6	)
	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 Mortgage Revenue Bond Programs (“MRBP”). The servicing portfolios are predominantly comprised of fixed-rate agency loans with limited adjustable-rate or jumbo mortgage loans. The MRBP 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:
			2013														2012
	(Dollars in Millions)		MRBP			Government			Conventional (b)			Total					MRBP				Government			Conventional (b)			Total
	Servicing portfolio		$	15,896		$	41,659		$	169,287		$	226,842				$	14,143			$	39,048		$	162,446		$	215,637
	Fair value		$	180		$	500		$	2,000		$	2,680				$	154			$	314		$	1,232		$	1,700
	Value (bps) (a)			113			120			118			118					109				80			76			79
	Weighted-average servicing fees (bps)			39			32			29			30					40				33			30			31
	Multiple (value/servicing fees)			2.9			3.75			4.07			3.93					2.73				2.42			2.53			2.55
	Weighted-average note rate			4.7	%		4.24	%		4.17	%		4.22	%				5.13	%			4.57	%		4.48	%		4.54	%
	Weighted-average age (in years)			3.8			2.6			2.5			2.6					4.2				2.4			2.5			2.6
	Weighted-average expected prepayment (constant prepayment rate)			13.5	%		11.5	%		10.9	%		11.2	%				13.2	%			21.2	%		20.4	%		20.1	%
	Weighted-average expected life (in years)			6.2			6.9			7.2			7.1					6.1				4.2			4.1			4.2
	Weighted-average discount rate			11.9	%		11.2	%		9.8	%		10.2	%				12.1	%			11.4	%		10	%		10.4	%
	(a)	Value is calculated as fair value divided by the servicing portfolio.
	(b)	Represents loans sold primarily to GSEs.

Intangible_Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Intangible Assets	'
	NOTE 10	Intangible Assets
	Intangible assets consisted of the following:
			Estimated		Amortization					Balance
	At December 31 (Dollars in Millions)		Life (a)		Method (b)					2013				2012
	Goodwill					(c	)			$	9,205			$	9,143
	Merchant processing contracts			10 years/8 years		SL/AC					229				281
	Core deposit benefits			22 years/5 years		SL/AC					135				176
	Mortgage servicing rights					(c	)				2,680				1,700
	Trust relationships			14 years/6 years		SL/AC					122				149
	Other identified intangibles			9 years/5 years		SL/AC					363				400
	Total									$	12,734			$	11,849
	(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 =traight line method
			AC=ccelerated 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)		2013		2012			2011
	Merchant processing contracts		$	64	$	74		$	90
	Core deposit benefits			41		60			81
	Trust relationships			34		39			35
	Other identified intangibles			84		101			93
	Total		$	223	$	274		$	299
	The estimated amortization expense for the next five years is as follows:
	(Dollars in Millions)
	2014		$	184
	2015			148
	2016			119
	2017			98
	2018			78
	The following table reflects the changes in the carrying value of goodwill for the years ended December 31, 2013, 2012 and 2011:
	(Dollars in Millions)		Wholesale Banking and		Consumer and Small			Wealth Management and				Payment				Treasury and		Consolidated
			Commercial Real Estate		Business Banking			Securities Services				Services				Corporate Support		Company
	Balance at December 31, 2010		$	1,605	$	3,535		$	1,463			$	2,351			$	–	$	8,954
	Other (a)			–		(21	)		–				(6	)			–		(27	)
	Balance at December 31, 2011		$	1,605	$	3,514		$	1,463			$	2,345			$	–	$	8,927
	Goodwill acquired			–		–			65				143				–		208
	Other (a)			–		–			–				8				–		8
	Balance at December 31, 2012		$	1,605	$	3,514		$	1,528			$	2,496			$	–	$	9,143
	Goodwill acquired			–		–			37				20				–		57
	Other (a)			–		–			–				5				–		5
	Balance at December 31, 2013		$	1,605	$	3,514		$	1,565			$	2,521			$	–	$	9,205
	(a)	Other changes in goodwill include a reclassification from goodwill to covered loans related to an FDIC-assisted acquisition for Consumer and Small Business Banking and the effect of foreign exchange translation for Payment Services.

ShortTerm_Borrowings_a

Short-Term Borrowings (a)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Short-Term Borrowings (a)	'
	NOTE 11	Short-Term Borrowings (a)
	The following table is a summary of short-term borrowings for the last three years:
			2013					2012					2011
	(Dollars in Millions)		Amount		Rate			Amount		Rate			Amount		Rate
	At year-end
	Federal funds purchased		$	594		0.11	%	$	950		0.11	%	$	1,036		0.11	%
	Securities sold under agreements to repurchase			2,057		5.34			3,388		3.26			6,986		3.35
	Commercial paper			19,400		0.11			16,202		0.12			15,973		0.12
	Other short-term borrowings			5,557		0.19			5,762		0.29			6,473		0.26
	Total		$	27,608		0.52	%	$	26,302		0.57	%	$	30,468		0.89	%
	Average for the year
	Federal funds purchased (b)		$	1,879		9.72	%	$	1,338		15.32	%	$	968		22.61	%
	Securities sold under agreements to repurchase			2,403		4.65			4,942		3.52			7,483		3.22
	Commercial paper			17,467		0.12			15,806		0.14			15,204		0.15
	Other short-term borrowings			5,934		0.72			6,463		0.72			7,048		0.77
	Total (b)		$	27,683		1.29	%	$	28,549		1.57	%	$	30,703		1.75	%
	Maximum month-end balance
	Federal funds purchased		$	3,569				$	2,467				$	1,172
	Securities sold under agreements to repurchase			3,121					5,922					9,071
	Commercial paper			19,400					17,385					16,768
	Other short-term borrowings			6,301					7,443					7,514
	(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 2013, 2012 and 2011 was $181 million, $203 million and $218 million, respectively.

LongTerm_Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Long-Term Debt	'
	NOTE 12	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		2013		2012
	U.S. Bancorp (Parent Company)
	Subordinated notes			Fixed		2.95	%		2022	$	1,300	$	1,300
				Fixed		7.5	%		2026		199		199
	Medium-term notes			Fixed		1.650% - 4.200	%		2014 - 2022		8,750		10,600
				Floating		0.728	%		2018		500		–
	Junior subordinated debentures			Fixed		3.442	%		2016		500		500
	Capitalized lease obligations, mortgage indebtedness and other (b)										167		173
	Subtotal										11,416		12,772
	Subsidiaries
	Subordinated notes			Fixed		6.3	%		2014		963		963
				Fixed		4.95	%		2014		1,000		1,000
				Fixed		4.8	%		2015		500		500
				Fixed		3.778	%		2020		500		500
				Floating		0.524	%		2014		373		373
	Federal Home Loan Bank advances			Fixed		1.250% - 8.250	%		2014 - 2026		13		16
				Floating		.238% - .505	%		2014 - 2022		4,579		4,579
	Bank notes			Floating		–	%		2046 - 2048		142		143
	Capitalized lease obligations, mortgage indebtedness and other (b)										563		4,670
	Subtotal										8,633		12,744
	Total									$	20,049	$	25,516
	(a)	Weighted-average interest rates of Federal Home Loan Bank advances and fixed-rate medium-term notes were .28 percent and 2.78 percent, respectively.
	(b)	Other includes consolidated community development and tax-advantaged investment VIEs, debt issuance fees, and unrealized gains and losses and deferred amounts relating to derivative instruments.
	During 2012, the Company elected to redeem $2.7 billion of junior subordinated debentures issued to five wholly-owned unconsolidated trusts that had interest payable at fixed rates ranging from 6.30 percent to 6.63 percent. There were no issuances of junior subordinated debentures in 2013 or 2012.
	The Company has arrangements with the Federal Home Loan Bank and Federal Reserve Bank whereby the Company could have borrowed an additional $69.7 billion and $60.9 billion at December 31, 2013 and 2012, respectively, based on collateral available.
	Maturities of long-term debt outstanding at December 31, 2013, were:
	(Dollars in Millions)		Parent		Consolidated
			Company
	2014		$	1,499	$	4,132
	2015			1,749		3,013
	2016			1,940		3,813
	2017			1,247		2,545
	2018			1,496		1,534
	Thereafter			3,485		5,012
	Total		$	11,416	$	20,049

Junior_Subordinated_Debentures

Junior Subordinated Debentures	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Junior Subordinated Debentures	'
	NOTE 13	Junior Subordinated Debentures
	As of December 31, 2013, the Company sponsored, and wholly owned 100 percent of the common equity of, USB Capital IX, a wholly-owned unconsolidated trust, formed for the purpose of issuing redeemable Income Trust Securities (“ITS”) to third party investors, originally investing the proceeds in junior subordinated debt securities (“Debentures”) issued by the Company and entering into stock purchase contracts to purchase preferred stock in the future. During 2010, the Company exchanged depositary shares representing an ownership interest in its Series A Non-Cumulative Perpetual Preferred Stock (“Series A Preferred Stock”) to acquire a portion of the ITS issued by USB Capital IX and retire a portion of the Debentures and cancel a pro-rata portion of stock purchase contracts. During 2011, USB Capital IX sold the remaining Debentures, originally issued by the Company to the trust, to investors to generate cash proceeds to purchase the Company’s Series A Preferred Stock pursuant to the stock purchase contracts. As part of this sale, a consolidated subsidiary of the Company purchased $176 million of the Debentures, which effectively retired the debt. The Company classifies the remaining $500 million of debentures at December 31, 2013 and 2012, as long-term debt. As of December 31, 2013 and 2012, $676 million of the Company’s Series A Preferred Stock was the sole asset of USB Capital IX. The Company’s obligations under the transaction documents, taken together, have the effect of providing a full and unconditional guarantee by the Company, on a junior subordinated basis, of the payment obligations of the trust.

Shareholders_Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Shareholders' Equity	'
	NOTE 14	Shareholders’ Equity
	At December 31, 2013 and 2012, the Company had authority to issue 4 billion shares of common stock and 50 million shares of preferred stock. The Company had 1.8 billion shares and 1.9 billion shares of common stock outstanding at December 31, 2013 and 2012, respectively. The Company had 106 million shares reserved for future issuances, primarily under stock option plans, at December 31, 2013.
	The number of shares issued and outstanding and the carrying amount of each outstanding series of the Company’s preferred stock was as follows:
			2013														2012
	At December 31,		Shares			Liquidation			Discount			Carrying					Shares				Liquidation		Discount		Carrying
	(Dollars in Millions)		Issued and			Preference						Amount					Issued and				Preference				Amount
			Outstanding														Outstanding
	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 D			–			–			–			–					20,000				500		–		500
	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					–				–		–		–
	Total preferred stock (a)			159,910		$	4,936		$	180		$	4,756					159,910			$	4,936	$	167	$	4,769
	(a)	The par value of all shares issued and outstanding at December 31, 2013 and 2012, was $1.00 per share.
	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 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 2008, the Company issued depositary shares representing an ownership interest in 20,000 shares of Series D Non-Cumulative Perpetual Preferred Stock with a liquidation preference of $25,000 per share (the “Series D Preferred Stock”). In conjunction with the issuance of the Series H Preferred Stock, the Company redeemed at par value all shares of the Series D Preferred Stock during 2013. The Company included an $8 million loss in its computation of earnings per diluted common share for 2013, which represents the stock issuance costs recorded in capital surplus upon the issuance of the Series D Preferred Stock that were reclassified to retained earnings on the redemption date.
	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 2013, 2012 and 2011, the Company repurchased shares of its common stock under various authorizations approved by its Board of Directors. As of December 31, 2013, the approximate dollar value of shares that may yet be purchased by the Company under the current Board of Directors approved authorization was $488 million.
	The following table summarizes the Company’s common stock repurchased in each of the last three years:
	(Dollars and Shares in Millions)		Shares			Value
	2013			65		$	2,336
	2012			59			1,878
	2011			22			550
	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
			(Losses) on			(Losses) on			(Losses) on			(Losses) on			Translation
			Securities			Securities			Derivative Hedges			Retirement Plans
			Available-For-Sale			Transferred From
						Available-For-Sale
						to Held-To-Maturity
	2013
	Balance at beginning of period		$	679		$	107		$	(404	)	$	(1,265	)	$	(40	)		$	(923	)
	Changes in unrealized gains and losses			(1,223	)		–			37			590			–				(596	)
	Other-than-temporary impairment not recognized in earnings on securities available-for-sale			8			–			–			–			–				8
	Foreign currency translation adjustment			–			–			–			–			(34	)			(34	)
	Reclassification to earnings of realized gains and losses			(9	)		(59	)		192			249			–				373
	Applicable income taxes			468			22			(86	)		(317	)		14				101
	Balance at end of period		$	(77	)	$	70		$	(261	)	$	(743	)	$	(60	)		$	(1,071	)
	2012
	Balance at beginning of period		$	360		$	–		$	(489	)	$	(1,022	)	$	(49	)		$	(1,200	)
	Changes in unrealized gains and losses			715			–			(74	)		(543	)		–				98
	Other-than-temporary impairment not recognized in earnings on securities available-for-sale			12			–			–			–			–				12
	Transfer of securities from available-for-sale to held-to-maturity			(224	)		224			–			–			–				–
	Foreign currency translation adjustment			–			–			–			–			14				14
	Reclassification to earnings of realized gains and losses			15			(51	)		211			150			–				325
	Applicable income taxes			(199	)		(66	)		(52	)		150			(5	)			(172	)
	Balance at end of period		$	679		$	107		$	(404	)	$	(1,265	)	$	(40	)		$	(923	)
	2011
	Balance at beginning of period		$	(213	)	$	–		$	(414	)	$	(803	)	$	(39	)		$	(1,469	)
	Changes in unrealized gains and losses			920			–			(343	)		(464	)		–				113
	Other-than-temporary impairment not recognized in earnings on securities available-for-sale			(25	)		–			–			–			–				(25	)
	Foreign currency translation adjustment			–			–			–			–			(16	)			(16	)
	Reclassification to earnings of realized gains and losses			31			–			222			110			–				363
	Applicable income taxes			(353	)		–			46			135			6				(166	)
	Balance at end of period		$	360		$	–		$	(489	)	$	(1,022	)	$	(49	)		$	(1,200	)
	Additional detail about the impact to net income for items reclassified out of accumulated other comprehensive income and into earnings for the year ended December 31, 2013, is as follows:
	(Dollars in Millions)		Impact to			Affected Line Item in the
			Net Income			Consolidated Statement of Income
	Unrealized gains (losses) on securities available-for-sale
	Realized gains (losses) on sale of securities		$	23		Total securities gains (losses), net
Other-than-temporary impairment recognized in earnings			(14	)
			9		Total before tax
			(4	)	Applicable income taxes
			5		Net-of-tax
Unrealized gains (losses) on securities transferred from available-for-sale to held-to-maturity
Amortization of unrealized gains			59		Interest income
			(22	)	Applicable income taxes
			37		Net-of-tax
Unrealized gains (losses) on derivative hedges
Realized gains (losses) on derivative hedges			(192	)	Net interest income
			74		Applicable income taxes
			(118	)	Net-of-tax
Unrealized gains (losses) on retirement plans
Actuarial gains (losses), prior service cost (credit) and transition obligation (asset) amortization			(249	)	Employee benefits expense
			96		Applicable income taxes
			(153	)	Net-of-tax
Total impact to net income		$	(229	)
Regulatory Capital The measures used to assess capital by bank regulatory agencies include two principal risk-based ratios, Tier 1 and total risk-based capital. Tier 1 capital is considered core capital and includes common shareholders’ equity plus qualifying preferred stock, trust preferred securities and noncontrolling interests in consolidated subsidiaries (subject to certain limitations), and is adjusted for the aggregate impact of certain items included in other comprehensive income (loss). Total risk-based capital includes Tier 1 capital and other items such as subordinated debt and the allowance for credit losses. Both measures are stated as a percentage of risk-adjusted assets, which are measured based on their perceived credit risk and include certain off-balance sheet exposures, such as unfunded loan commitments, letters of credit, and derivative contracts. 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, 2013 and 2012, for the Company and its bank subsidiary, see Table 22 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)		2013			2012
Tier 1 Capital
Common shareholders’ equity		$	36,357		$	34,229
Qualifying preferred stock			4,756			4,769
Noncontrolling interests, less preferred stock not eligible for Tier 1 capital			688			685
Less intangible assets
Goodwill (net of deferred tax liability)			(8,343	)		(8,351	)
Other disallowed intangible assets			(708	)		(829	)
Other (a)			636			700
Total Tier 1 Capital			33,386			31,203
Tier 2 Capital
Eligible portion of allowance for credit losses			3,734			3,609
Eligible subordinated debt			2,299			2,953
Other			(79	)		15
Total Tier 2 Capital			5,954			6,577
Total Risk Based Capital		$	39,340		$	37,780
Risk-Weighted Assets		$	297,919		$	287,611
(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.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	NOTE 15	Earnings Per Share
	The components of earnings per share were:
	Year Ended December 31		2013			2012			2011
	(Dollars and Shares in Millions, Except Per Share Data)
	Net income attributable to U.S. Bancorp		$	5,836		$	5,647		$	4,872
	Preferred dividends			(250	)		(238	)		(129	)
	Impact of preferred stock redemption (a)			(8	)		–			–
	Earnings allocated to participating stock awards			(26	)		(26	)		(22	)
	Net income applicable to U.S. Bancorp common shareholders		$	5,552		$	5,383		$	4,721
	Average common shares outstanding			1,839			1,887			1,914
	Net effect of the exercise and assumed purchase of stock awards			10			9			9
	Average diluted common shares outstanding			1,849			1,896			1,923
	Earnings per common share		$	3.02		$	2.85		$	2.47
	Diluted earnings per common share		$	3		$	2.84		$	2.46
	(a)	Represents stock issuance costs originally recorded in capital surplus upon the issuance of the Company’s Series D Non-Cumulative Perpetual Preferred Stock that were reclassified to retained earnings on the redemption date.
	Options outstanding at December 31, 2013, 2012 and 2011, to purchase 5 million, 22 million and 54 million common shares, respectively, were not included in the computation of diluted earnings per share for the years ended December 31, 2013, 2012 and 2011, respectively, because they were antidilutive. Convertible senior debentures outstanding at December 31, 2012 and 2011, that could potentially be converted into shares of the Company’s common stock pursuant to specified formulas, were not included in the computation of dilutive earnings per share for the years ended December 31, 2012 and 2011, because they were antidilutive.

Employee_Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]	'
Employee Benefits	'
	NOTE 16	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 an employee’s eligible annual compensation. The Company’s matching contribution vests immediately. Beginning with the 2013 matching contribution paid in January 2014, the matching contribution will be invested in the same manner as an employee’s future contribution elections. Previously, the matching contribution was initially invested in the Company’s common stock, and the employee was able to reinvest the matching contribution among various investment alternatives. Total expense for the Company’s matching contributions was $118 million, $111 million and $103 million in 2013, 2012 and 2011, respectively.
	Pension Plans The Company has tax qualified noncontributory defined benefit pension plans that provide 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 plans’ 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 all of the plans, their 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 plans 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 contributions of $296 million and $35 million to its main pension plan in 2013 and 2012, respectively, and anticipates making contributions of $185 million to its main pension plan in 2014. Any contributions made to the qualified plans are invested in accordance with established investment policies and asset allocation strategies.
	In addition to the funded qualified pension plans, the Company maintains non-qualified plans that are unfunded and provide 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 plans. In 2014, the Company expects to contribute $20 million to its non-qualified pension plans which equals the 2014 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. This plan change decreased the plan’s benefit obligation by $35 million during 2013, which will be amortized as a reduction to plan expense over the remaining life of the plan participants. The Company expects to contribute $9 million to its postretirement welfare plan in 2014.
	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
												Welfare Plan
	(Dollars in Millions)		2013			2012						2013				2012
	Change In Projected Benefit Obligation
	Benefit obligation at beginning of measurement period		$	4,096		$	3,261					$	142			$	170
	Service cost			168			129						3				5
	Interest cost			170			168						4				7
	Participants’ contributions			–			–						10				10
	Plan amendments			–			–						(35	)			–
	Actuarial loss (gain)			(388	)		681						(2	)			(26	)
	Lump sum settlements			(34	)		(33	)					–				–
	Benefit payments			(117	)		(110	)					(24	)			(26	)
	Federal subsidy on benefits paid			–			–						2				2
	Benefit obligation at end of measurement period (a)		$	3,895		$	4,096					$	100			$	142
	Change In Fair Value Of Plan Assets
	Fair value at beginning of measurement period		$	2,321		$	2,103					$	105			$	120
	Actual return on plan assets			343			305						–				–
	Employer contributions			318			56						1				1
	Participants’ contributions			–			–						10				10
	Lump sum settlements			(34	)		(33	)					–				–
	Benefit payments			(117	)		(110	)					(24	)			(26	)
	Fair value at end of measurement period		$	2,831		$	2,321					$	92			$	105
	Funded (Unfunded) Status		$	(1,064	)	$	(1,775	)				$	(8	)		$	(37	)
	Components Of The Consolidated Balance Sheet
	Current benefit liability		$	(20	)	$	(23	)				$	–			$	–
	Noncurrent benefit liability			(1,044	)		(1,752	)					(8	)			(37	)
	Recognized amount		$	(1,064	)	$	(1,775	)				$	(8	)		$	(37	)
	Accumulated Other Comprehensive Income (Loss), Pretax
	Net actuarial gain (loss)		$	(1,333	)	$	(2,152	)				$	75			$	84
	Net prior service credit (cost)			16			21						34				–
	Recognized amount		$	(1,317	)	$	(2,131	)				$	109			$	84
	(a)	At December 31, 2013 and 2012, the accumulated benefit obligation for all pension plans was $3.6 billion and $3.8 billion, respectively.
	The following table provides information for pension plans with benefit obligations in excess of plan assets at December 31:
	(Dollars in Millions)		2013			2012
	Pension Plans with Projected Benefit Obligations in Excess of Plan Assets
	Projected benefit obligation		$	3,853		$	4,096
	Fair value of plan assets			2,787			2,321
	Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets
	Projected benefit obligation		$	3,853		$	4,096
	Accumulated benefit obligation			3,566			3,776
	Fair value of plan assets			2,787			2,321
	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)		2013			2012				2011						2013			2012			2011
	Components Of Net Periodic Benefit Cost
	Service cost		$	168		$	129			$	119					$	3		$	5		$	4
	Interest cost			170			168				169						4			7			9
	Expected return on plan assets			(176	)		(191	)			(207	)					(2	)		(2	)		(5	)
	Prior service cost (credit) and transition obligation (asset) amortization			(5	)		(4	)			(9	)					(1	)		–			–
	Actuarial loss (gain) amortization			264			161				125						(9	)		(7	)		(6	)
	Net periodic benefit cost		$	421		$	263			$	197					$	(5	)	$	3		$	2
	Other Changes In Plan Assets And Benefit Obligations
	Recognized In Other Comprehensive Income (Loss)
	Net actuarial gain (loss) arising during the year		$	555		$	(567	)		$	(474	)				$	–		$	24		$	10
	Net actuarial loss (gain) amortized during the year			264			161				125						(9	)		(7	)		(6	)
Net prior service credit (cost) arising during the year			–			–				–						35			–			–
Net prior service cost (credit) and transition obligation (asset) amortized during the year			(5	)		(4	)			(9	)					(1	)		–			–
Total recognized in other comprehensive income (loss)		$	814		$	(410	)		$	(358	)				$	25		$	17		$	4
Total recognized in net periodic benefit cost and other comprehensive income (loss) (a)(b)		$	393		$	(673	)		$	(555	)				$	30		$	14		$	2
(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 2014 are $158 million and $(5) 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 2014 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)		2013			2012						2013				2012
Discount rate (a)			4.97	%		4.07	%					3.93	%			3.1	%
Rate of compensation increase (b)			4.02			4.08						*				*
Health care cost trend rate for the next year (c)												7.5	%			8	%
Effect on accumulated postretirement benefit obligation
One percent increase											$	5			$	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 plans, non-qualified pension plans and postretirement welfare plan of 14.6, 11.5, and 6.4 years, respectively, for 2013, and 15.9, 12.2 and 7.2 years, respectively, for 2012.
(b)	Determined on an active liability weighted basis.
(c)	The rate is assumed to decrease gradually to 5.0 percent by 2019 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)		2013			2012				2011						2013			2012			2011
Discount rate (a)			4.07	%		5.07	%			5.66	%					3.1	%		4.3	%		4.9	%
Expected return on plan assets (b)			7.5			8				8.25						1.5			2.25			3.5
Rate of compensation increase (c)			4.08			4.05				4.02						*			*			*
Health care cost trend rate (d)
Prior to age 65																8	%		8	%		8	%
After age 65																8			12			14
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 plans, non-qualified pension plans and postretirement welfare plan of 15.9, 12.2 and 7.2 years, respectively, for 2013, and 14.8, 11.4 and 7.7 years, respectively, for 2012.
(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 determined its 2013 expected long-term rates of return reflecting current economic conditions and plan assets. The decrease in the pension plans’ LTROR is primarily due to an increase in the debt securities target asset allocation from 10 percent as of December 31, 2011, to 30 percent as of December 31, 2013.
(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 U.S. 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 reduce volatility, while recognizing the long-term up-side potential of investing in equities, the Committee increased the target asset allocation to 30 percent debt securities for the Company’s qualified pension plans at December 31, 2013. The remaining target asset allocation at December 31, 2013 was 35 percent passively managed global equities, 8 percent actively managed global equities, 7 percent mid-small cap equities, 5 percent emerging markets equities, 5 percent real estate equities, 5 percent hedge funds and 5 percent private equity. The target asset allocation at December 31, 2012 was 35 percent passively managed global equities, 25 percent actively managed global equities, 10 percent mid-small cap equities, 5 percent emerging markets equities, 5 percent real estate equities, and 20 percent debt securities.
At December 31, 2013 and 2012, plan assets of the qualified pension plans included asset management arrangements with related parties totaling $119 million and $168 million, respectively.
Under a contractual agreement with U.S. Bancorp Asset Management, Inc., an affiliate of the Company, certain plan assets were lent to qualified borrowers on a short-term basis in exchange for investment fee income. These borrowers collateralized the loaned securities with either cash or non-cash securities. In 2013, the qualified pension plan discontinued its participation in the securities lending program. Cash collateral held at December 31, 2012 totaled $14 million, with an obligation to return the cash collateral of $20 million.
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 plans 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 plans also invest in collective investment and mutual funds whose fair values are determined using the net asset value provided by the administrator of the fund and are classified as Level 2. In addition, the qualified pension plans invest in debt securities and foreign currency transactions that are valued using third party pricing services and are classified as Level 2. In 2012, the qualified pension plan invested in a money market mutual fund with cash collateral from its securities lending arrangement, whose fair value was determined based on quoted prices in markets that are less active and was classified as Level 2. The qualified pension plans invest in hedge funds and private equity funds whose fair values are determined using the net asset value provided by the fund administrators. The Company’s ability to redeem at net asset value is currently restricted, and accordingly, the investments in hedge and private equity funds are classified as Level 3. Additionally, the qualified pension plans invest in limited partnership interests, and in debt securities whose fair values are determined by the Company by analyzing the limited partnerships’ audited financial statements and by averaging the prices obtained from independent pricing services, respectively. These securities are classified as Level 3.
The following table summarizes the plan investment assets measured at fair value at December 31:
		Pension Plans																								Postretirement
																										Welfare Plan
		2013													2012											2013			2012
(Dollars in Millions)		Level 1			Level 2				Level 3						Level 1			Level 2			Level 3					Level 1			Level 1
Cash and cash equivalents		$	62		$	–			$	–					$	119		$	–		$	–				$	92		$	105
Debt securities			217			343				–						151			114			7					–			–
Corporate stock
Domestic equity securities			217			–				–						275			–			–					–			–
Mid-small cap equity securities (a)			148			–				–						173			–			–					–			–
International equity securities			229			–				–						285			–			–					–			–
Real estate equity securities (b)			137			–				–						132			–			–					–			–
Collective investment funds
Domestic equity securities			–			538				–						–			400			–					–			–
Mid-small cap equity securities (c)			–			58				–						–			59			–					–			–
Emerging markets equity securities			–			58				–						–			61			–					–			–
International equity securities			–			472				–						–			362			–					–			–
Mutual funds
Money market			–			–				–						–			7			–					–			–
Debt securities			–			177				–						–			129			–					–			–
Emerging markets equity securities			–			75				–						–			71			–					–			–
Hedge funds (d)			–			–				103						–			–			–					–			–
Other			–			(7	)			4						–			(7	)		3					–			–
Total (e)		$	1,010		$	1,714			$	107					$	1,135		$	1,196		$	10				$	92		$	105
(a)	At December 31, 2013 and 2012, securities included $141 million and $164 million in domestic equities, respectively and $7 million and $9 million in international equities, respectively.
(b)	At December 31, 2013 and 2012, securities included $67 million and $66 million in domestic equities, respectively, and $70 million and $66 million in international equities, respectively.
(c)	At December 31, 2013 and 2012, securities included $26 million and $24 million in domestic equities, respectively, $22 million and $16 million in international equities, respectively, and $10 million and $19 million in cash and cash equivalents, respectively.
(d)	This category consists of several investment strategies diversified across several hedge fund managers.
(e)	Total investment assets of the pension plans exclude obligations to return cash collateral to qualified borrowers of $20 million at December 31, 2012, under security lending arrangements.
The following table summarizes the changes in fair value for all plan investment assets measured at fair value using significant unobservable inputs (Level 3) for the years ended December 31:
		2013													2012								2011
(Dollars in Millions)		Debt			Hedge				Other						Debt			Other					Debt			Other
		Securities			Funds										Securities								Securities
Balance at beginning of period		$	7		$	–			$	3					$	7		$	6				$	8		$	6
Unrealized gains (losses) relating to assets still held at end of year			–			–				–						1			(2	)				–			(9	)
Purchases, sales, and settlements, net			(7	)		103				1						(1	)		(1	)				(1	)		9
Balance at end of period		$	–		$	103			$	4					$	7		$	3				$	7		$	6
The following benefit payments are expected to be paid from the retirement plans for the years ended December 31:
(Dollars in Millions)		Pension					Postretirement						Medicare Part D
		Plans					Welfare Plan (a)						Subsidy Receipts
2014		$	169				$	15					$	2
2015			177					14						2
2016			189					13						2
2017			200					12						2
2018			205					11						2
2019 – 2023			1,205					44						8
(a)	Net of expected retiree contributions and before Medicare Part D subsidy.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-Based Compensation	'
	NOTE 17	Stock-Based Compensation
	As part of its employee and director compensation programs, the Company may grant certain stock awards under the provisions of the existing stock compensation plans, including plans assumed in acquisitions. The plans provide 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 plans provide 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 stock, based on the conversion terms of the various merger agreements. At December 31, 2013, there were 54 million shares (subject to adjustment for forfeitures) available for grant under various plans.
	Stock Option Awards
	The following is a summary of stock options outstanding and exercised under various stock option plans of the Company:
	Year Ended December 31		Stock			Weighted-			Weighted-Average				Aggregate
			Options/Shares			Average			Remaining Contractual				Intrinsic Value
						Exercise Price			Term				(in millions)
	2013
	Number outstanding at beginning of period			63,171,918		$	28.83
	Granted			1,168,011			33.99
	Exercised			(17,260,740	)		28.41
	Cancelled (a)			(354,424	)		29.22
	Number outstanding at end of period (b)			46,724,765		$	29.12			4.4			$	527
	Exercisable at end of period			39,556,000		$	29.19			3.8			$	444
	2012
	Number outstanding at beginning of period			75,823,941		$	27.6
	Granted			4,180,492			28.65
	Exercised			(15,681,323	)		23.12
	Cancelled (a)			(1,151,192	)		24.9
	Number outstanding at end of period (b)			63,171,918		$	28.83			4.9			$	196
	Exercisable at end of period			50,671,654		$	30.12			4.2			$	92
	2011
	Number outstanding at beginning of period			85,622,705		$	26.8
	Granted			4,063,369			28.66
	Exercised			(8,508,107	)		19.49
	Cancelled (a)			(5,354,026	)		28.44
	Number outstanding at end of period (b)			75,823,941		$	27.6			5.2			$	(42	)
	Exercisable at end of period			57,039,334		$	29.14			4.4			$	(120	)
	(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 their actual fair value. The following table includes the weighted average estimated fair value and assumptions utilized by the Company for newly issued grants:
	Year Ended December 31		2013			2012			2011
	Estimated fair value		$	12.13		$	10.19		$	10.55
	Risk-free interest rates			1	%		0.9	%		2.5	%
	Dividend yield			2.6	%		2.6	%		2.5	%
	Stock volatility factor			0.49			0.49			0.47
	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 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)		2013			2012			2011
	Fair value of options vested		$	41		$	49		$	54
	Intrinsic value of options exercised			144			143			61
	Cash received from options exercised			489			362			165
	Tax benefit realized from options exercised			56			75			23
	To satisfy option exercises, the Company predominantly uses treasury stock.
	Additional information regarding stock options outstanding as of December 31, 2013, is as follows:
			Outstanding Options												Exercisable Options
	Range of Exercise Prices		Shares			Weighted-			Weighted-						Shares		Weighted-
						Average			Average								Average
						Remaining			Exercise								Exercise
						Contractual			Price								Price
						Life (Years)
	$11.02 – $15.00			4,661,087			5.1		$	11.39						4,661,087	$	11.4
	$15.01 – $20.00			167,391			2.4			19.54						167,391		19.54
	$20.01 – $25.00			3,390,179			6.2			23.85						2,216,001		23.84
	$25.01 – $30.00			13,108,918			5.2			29.05						8,276,837		29.29
	$30.01 – $35.00			17,999,955			3.9			31.97						16,837,858		31.83
	$35.01 – $36.25			7,397,235			3.1			36.07						7,396,826		36.07
	Total			46,724,765			4.4		$	29.12						39,556,000	$	29.19
	Restricted Stock and Unit Awards
	A summary of the status of the Company’s restricted shares of stock and unit awards is presented below:
			2013								2012								2011
	Year Ended December 31		Shares			Weighted-					Shares				Weighted-				Shares			Weighted-
Average Grant-						Average Grant-									Average Grant-
Date Fair Value						Date Fair Value									Date Fair Value
Nonvested Shares
Outstanding at beginning of period			8,935,743		$	25.04					8,995,295			$	22.46				8,811,027		$	19.74
Granted			3,717,635			33.88					3,085,077				28.7				3,136,086			28.2
Vested			(3,744,411	)		22.17					(2,931,820	)			20.97				(2,552,979	)		20.15
Cancelled			(255,108	)		29.18					(212,809	)			25.01				(398,839	)		22.2
Outstanding at end of period			8,653,859		$	29.96					8,935,743			$	25.04				8,995,295		$	22.46
The total fair value of shares vested was $127 million, $86 million and $72 million for the years ended December 31, 2013, 2012 and 2011, respectively. Stock-based compensation expense was $129 million, $129 million and $118 million for the years ended December 31, 2013, 2012 and 2011, respectively. On an after-tax basis, stock-based compensation was $80 million, $80 million and $73 million for the years ended December 31, 2013, 2012 and 2011, respectively. As of December 31, 2013, there was $142 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 2.4 years as compensation expense.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	NOTE 18	Income Taxes
	The components of income tax expense were:
	Year Ended December 31 (Dollars in Millions)		2013			2012			2011
	Federal
	Current		$	1,885		$	1,853		$	907
	Deferred			(83	)		45			689
	Federal income tax			1,802			1,898			1,596
	State
	Current			216			334			186
	Deferred			14			4			59
	State income tax			230			338			245
	Total income tax provision		$	2,032		$	2,236		$	1,841
	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)		2013			2012			2011
	Tax at statutory rate		$	2,717		$	2,704		$	2,320
	State income tax, at statutory rates, net of federal tax benefit			150			220			159
	Tax effect of
	Tax credits, net of related expenses (a)			(648	)		(479	)		(458	)
	Tax-exempt income			(212	)		(219	)		(226	)
	Noncontrolling interests			37			55			29
	Other items			(12	)		(45	)		17
	Applicable income taxes		$	2,032		$	2,236		$	1,841
	(a)	Excludes tax credits of $473 million for the year ended December 31, 2013 which were recognized as a reduction to the related investment asset.
	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 stock options are recorded directly to shareholders’ equity as part of other comprehensive income (loss).
	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 and 2012 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)		2013			2012			2011
	Balance at beginning of period		$	302		$	479		$	532
	Additions for tax positions taken in prior years			44			73			24
	Additions for tax positions taken in the current year			–			5			2
	Exam resolutions			(56	)		(245	)		(70	)
	Statute expirations			(26	)		(10	)		(9	)
	Balance at end of period		$	264		$	302		$	479
	The total amount of unrecognized tax positions that, if recognized, would impact the effective income tax rate as of December 31, 2013, 2012 and 2011, were $181 million, $240 million and $220 million, respectively. The Company classifies interest and penalties related to unrecognized tax positions as a component of income tax expense. At December 31, 2013, the Company’s uncertain tax position balance included $27 million in accrued interest. During the years ended December 31, 2013, 2012 and 2011 the Company recorded approximately $(12) million, $(8) million and $(2) 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)		2013			2012
	Deferred Tax Assets
	Allowance for credit losses		$	1,722		$	1,756
	Accrued expenses			485			476
	Pension and postretirement benefits			277			523
	Securities available-for-sale and financial instruments			172			–
	Stock compensation			165			183
	Federal, state and foreign net operating loss carryforwards			72			60
	Partnerships and other investment assets			646			395
	Other deferred tax assets, net			179			180
	Gross deferred tax assets			3,718			3,573
	Deferred Tax Liabilities
	Leasing activities			(2,872	)		(2,792	)
	Mortgage servicing rights			(835	)		(490	)
	Goodwill and other intangible assets			(666	)		(565	)
	Loans			(211	)		(168	)
	Fixed assets			(147	)		(201	)
	Securities available-for-sale and financial instruments			–			(232	)
	Other deferred tax liabilities, net			(210	)		(361	)
	Gross deferred tax liabilities			(4,941	)		(4,809	)
	Valuation allowance			(82	)		(84	)
	Net Deferred Tax Asset (Liability)		$	(1,305	)	$	(1,320	)
	The Company has approximately $579 million of federal, state and foreign net operating loss carryforwards which expire at various times through 2033. Limitations on the ability to realize these carryforwards is reflected in the associated valuation allowance. 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.
	At December 31, 2013, 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 the Company’s banking subsidiaries 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, 2013
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 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”); a hedge of the volatility of an investment in foreign operations driven by changes in foreign currency exchange rates (“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, 2013, 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 loans and 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, 2013, the Company had $261 million (net-of-tax) of realized and unrealized losses on derivatives classified as cash flow hedges recorded in other comprehensive income (loss), compared with $404 million (net-of-tax) at December 31, 2012. The estimated amount to be reclassified from other comprehensive income (loss) into earnings during the next 12 months is a loss of $117 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, 2013, 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 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, 2013. There were no non-derivative debt instruments designated as net investment hedges at December 31, 2013 or 2012.
	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 mortgage loans held for sale (“MLHFS”) and unfunded mortgage loan commitments. The Company also enters into interest rate swaps, forward commitments to buy TBAs, U.S. Treasury 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. To mitigate the market and liquidity risk associated with these customer derivatives, the Company historically has entered into similar offsetting positions with broker-dealers. In 2014, the Company began to instead actively manage the risks from its exposure to these customer-related positions 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 also has derivative contracts that are created through its operations, including commitments to originate MLHFS.
	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					Notional			Fair			Weighted-Average
			Value			Value			Remaining					Value			Value			Remaining
									Maturity											Maturity
									In Years											In Years
	December 31, 2013
	Fair value hedges
	Interest rate contracts
	Receive fixed/pay floating swaps		$	500		$	22			2.09				$	–		$	–			–
	Cash flow hedges
	Interest rate contracts
	Pay fixed/receive floating swaps			772			26			6.25					4,288			498			2.46
	Receive fixed/pay floating swaps			7,000			26			0.84					–			–			–
	Net investment hedges
	Foreign exchange forward contracts			–			–			–					1,056			4			0.04
	Other economic hedges
	Interest rate contracts
	Futures and forwards
	Buy			2,310			9			0.07					1,025			7			0.06
	Sell			5,234			58			0.08					346			4			0.17
	Options
	Purchased			2,300			–			0.07					–			–			–
	Written			1,902			17			0.07					2			–			0.08
	Receive fixed/pay floating swaps			–			–			–					3,540			56			10.22
	Foreign exchange forward contracts			6,813			24			0.02					2,121			4			0.02
	Equity contracts			79			3			1.62					–			–			–
	Credit contracts			1,209			4			4.04					2,352			7			3.08
	Total		$	28,119		$	189							$	14,730		$	580
	December 31, 2012
	Fair value hedges
	Interest rate contracts
	Receive fixed/pay floating swaps		$	500		$	30			3.09				$	–		$	–			–
	Cash flow hedges
	Interest rate contracts
	Pay fixed/receive floating swaps			32			–			9.88					4,528			718			3.79
	Receive fixed/pay floating swaps			7,000			45			1.84					–			–			–
	Net investment hedges
	Foreign exchange forward contracts			758			1			0.07					–			–			–
	Other economic hedges
	Interest rate contracts
	Futures and forwards
	Buy			11,164			138			0.07					2,921			13			0.04
	Sell			6,299			18			0.11					12,223			57			0.09
	Options
	Purchased			2,435			–			0.07					–			–			–
	Written			4,991			123			0.12					4			–			0.06
	Receive fixed/pay floating swaps			350			1			10.21					3,775			14			10.21
	Foreign exchange forward contracts			618			4			0.03					1,383			6			0.01
	Equity contracts			31			–			2.8					27			–			2.46
	Credit contracts			1,056			3			4.56					1,947			10			3.11
	Total		$	35,234		$	363							$	26,808		$	818
	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
			Value			Value			Remaining					Value			Value			Remaining
						Maturity											Maturity
						In Years											In Years
December 31, 2013
Interest rate contracts
Receive fixed/pay floating swaps		$	11,717		$	600			5.11				$	7,291		$	106			5.57
Pay fixed/receive floating swaps			6,746			114			6.03					12,361			560			4.9
Options
Purchased			3,489			33			4.53					–			–			–
Written			–			–			–					3,489			33			4.53
Foreign exchange rate contracts
Forwards, spots and swaps			10,970			457			0.59					9,975			427			0.62
Options
Purchased			364			11			0.53					–			–			–
Written			–			–			–					364			11			0.53
Total		$	33,286		$	1,215							$	33,480		$	1,137
December 31, 2012
Interest rate contracts
Receive fixed/pay floating swaps		$	16,671		$	1,085			4.78				$	1,090		$	15			9.3
Pay fixed/receive floating swaps			928			14			11.12					16,923			1,042			4.74
Options
Purchased			3,046			16			5.24					28			–			4.42
Written			286			–			0.75					2,788			16			5.68
Foreign exchange rate contracts
Forwards, spots and swaps			12,186			322			0.43					11,861			286			0.44
Options
Purchased			323			6			0.55					–			–			–
Written			–			–			–					323			6			0.55
Total		$	33,440		$	1,443							$	33,013		$	1,365
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
		Comprehensive Income (Loss)											Other Comprehensive Income (Loss)
													into Earnings
(Dollars in Millions)		2013			2012			2011					2013			2012			2011
Asset and Liability Management Positions
Cash flow hedges
Interest rate contracts (a)		$	25		$	(46	)	$	(213	)			$	(118	)	$	(131	)	$	(138	)
Net investment hedges
Foreign exchange forward contracts			(45	)		(19	)		34					–			–			–
Non-derivative debt instruments			–			20			–					–			–			–
Note:	Ineffectiveness on cash flow and net investment hedges was not material for the years ended December 31, 2013, 2012 and 2011.
(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)			2013			2012			2011
		Recognized in Earnings
Asset and Liability Management Positions
Fair value hedges (a)
Interest rate contracts			Other noninterest income		$	(9	)	$	3		$	(36	)
Foreign exchange cross-currency swaps			Other noninterest income			–			42			(69	)
Other economic hedges
Interest rate contracts
Futures and forwards			Mortgage banking revenue			615			437			23
Purchased and written options			Mortgage banking revenue			243			854			456
Receive fixed/pay floating swaps			Mortgage banking revenue			(322	)		175			518
Pay fixed/received floating swaps			Mortgage banking revenue			–			–			1
Foreign exchange forward contracts			Commercial products revenue			49			(63	)		(81	)
Equity contracts			Compensation expense			2			2			1
Credit contracts			Other noninterest income/expense			6			(8	)		–
Customer-Related Positions
Interest rate contracts
Receive fixed/pay floating swaps			Other noninterest income			(361	)		(118	)		302
Pay fixed/receive floating swaps			Other noninterest income			378			124			(317	)
Foreign exchange rate contracts
Forwards, spots and swaps			Commercial products revenue			51			50			53
(a)	Gains (Losses) on items hedged by interest rate contracts and foreign exchange forward contracts, included in noninterest income (expense), were $8 million and zero for the year ended December 31, 2013, respectively, $(3) million and $(44) million for the year ended December 31, 2012, respectively, and $29 million and $72 million for the year ended December 31, 2011, respectively. The ineffective portion was immaterial for the years ended December 31, 2013, 2012 and 2011.
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 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, on a daily basis, collateral (typically cash or U.S. Treasury and agency securities) equal to the Company’s net derivative receivable. For highly-rated counterparties, the collateral arrangements may include minimum dollar thresholds, but allow for the Company to call for immediate, full collateral coverage when credit-rating thresholds are triggered by counterparties.
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 full collateral coverage for derivatives in net liability positions. The aggregate fair value of all derivatives under collateral arrangements that were in a net liability position at December 31, 2013, was $1.0 billion. At December 31, 2013, the Company had $792 million of cash posted as collateral against this net liability position.

Netting_Arrangements_for_Certa

Netting Arrangements for Certain Financial Instruments	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Netting Arrangements for Certain Financial Instruments	'
	NOTE 20	Netting Arrangements for Certain Financial Instruments
	The majority of the Company’s derivative portfolio consists of bilateral over-the-counter trades. However, due to legislative changes effective during 2013, certain interest rate swaps 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 $109.6 billion of total notional amount of derivative positions at December 31, 2013, $8.3 billion related to those centrally cleared through clearinghouses and $3.6 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, 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. Securities used as collateral can be sold, re-pledged 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. Under all transactions, the fair values of the securities are determined daily, and additional cash is obtained or refunded to counterparties where appropriate. The securities transferred under repurchase and reverse repurchase transactions typically are U.S. Treasury securities or agency mortgage-backed securities. The securities loaned or borrowed are typically high-grade corporate bonds traded by the Company’s broker-dealer. 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.
	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 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		Gross Amounts			Net Amounts		Gross Amounts Not Offset on the
					Offset on the			Presented on the		Consolidated Balance Sheet
	(Dollars in Millions)		Recognized		Consolidated			Consolidated		Financial			Collateral			Net Amount
			Assets		Balance Sheet (a)			Balance Sheet		Instruments (b)			Received (c)
	December 31, 2013
	Derivative assets (d)		$	1,349	$	(599	)	$	750	$	(21	)	$	–		$	729
	Reverse repurchase agreements			87		–			87		(59	)		(28	)		–
	Securities borrowed			723		–			723		–			(698	)		25
	Total		$	2,159	$	(599	)	$	1,560	$	(80	)	$	(726	)	$	754
	December 31, 2012
	Derivative assets (d)		$	1,546	$	(418	)	$	1,128	$	(148	)	$	–		$	980
	Reverse repurchase agreements			363		–			363		(44	)		(319	)		–
	Securities borrowed			368		–			368		–			(356	)		12
	Total		$	2,277	$	(418	)	$	1,859	$	(192	)	$	(675	)	$	992
	(a)	Includes $124 million and $79 million of cash collateral related payables that were netted against derivative assets at December 31, 2013 and 2012, 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 $55 million and $260 million of derivative assets centrally cleared or otherwise not subject to netting arrangements at December 31, 2013 and 2012, respectively.
			Gross		Gross Amounts			Net Amounts		Gross Amounts Not Offset on the
					Offset on the			Presented on the		Consolidated Balance Sheet
	(Dollars in Millions)		Recognized		Consolidated			Consolidated		Financial			Collateral			Net Amount
			Liabilities		Balance Sheet (a)			Balance Sheet		Instruments (b)			Pledged (c)
	December 31, 2013
	Derivative liabilities (d)		$	1,598	$	(1,192	)	$	406	$	(21	)	$	–		$	385
	Repurchase agreements			2,059		–			2,059		(59	)		(2,000	)		–
	Securities loaned			–		–			–		–			–			–
	Total		$	3,657	$	(1,192	)	$	2,465	$	(80	)	$	(2,000	)	$	385
	December 31, 2012
	Derivative liabilities (d)		$	2,178	$	(1,549	)	$	629	$	(148	)	$	–		$	481
	Repurchase agreements			3,389		–			3,389		(44	)		(3,345	)		–
	Securities loaned			–		–			–		–			–			–
	Total		$	5,567	$	(1,549	)	$	4,018	$	(192	)	$	(3,345	)	$	481
	(a)	Includes $717 million and $1.2 billion of cash collateral related receivables that were netted against derivative liabilities at December 31, 2013 and 2012, 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 $119 million and $5 million of derivative liabilities centrally cleared or otherwise not subject to netting arrangements at December 31, 2013 and 2012, respectively.

Fair_Values_of_Assets_and_Liab

Fair Values of Assets and Liabilities	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Values of Assets and Liabilities	'
	NOTE 21	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, substantially all MLHFS and MSRs 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 and exchange-traded instruments.
	•		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 that the transfers occur. During the years ended December 31, 2013, 2012 and 2011, 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 discussed in more detail in the specific valuation discussions provided in the section that follows. 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 credit administration 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, 2013, 2012 and 2011, 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 are predominantly U.S. Treasury 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 observable market data. Level 2 investment securities are predominantly agency mortgage-backed securities, certain other asset-backed securities, municipal securities, corporate debt securities, agency debt securities and 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 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, where available. Securities classified within Level 3 include non-agency mortgage-backed securities, non-agency commercial mortgage-backed securities, certain asset-backed securities, certain collateralized debt obligations and collateralized loan obligations 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 was a $335 million net loss, a $287 million net gain and a $15 million net gain for the years ended December 31, 2013, 2012 and 2011, 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 was estimated using discounted cash flow analyses and other valuation techniques. The expected cash flows of loans considered historical prepayment experiences and estimated credit losses and were discounted using current rates offered to borrowers of 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. Accordingly, MSRs are classified within Level 3. The Company determines fair value by estimating the present value of the asset’s future cash flows using prepayment rates, discount rates, and other assumptions. 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, publicly available data and industry surveys when available, 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 credit administration. The credit assumptions are compared to actual results quarterly and are recalibrated as appropriate.
	The Company also has commitments to purchase and originate mortgage loans that meet the accounting requirements of a derivative. These 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.
	Other Financial Instruments Other financial instruments include cost method equity investments and 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, whose carrying amounts approximate their fair value and are classified within Level 2. Investments in private equity and other limited partnership funds are estimated using fund provided net asset values. These equity investments are classified within Level 3. Fair value is provided for disclosure purposes only.
	Community development and tax-advantaged investments generate a return primarily through the realization of federal and state income tax credits, with a duration typically equal to the period that the tax credits are realized. Asset balances primarily represent the assets of the underlying community development and tax-advantaged entities the Company consolidated per applicable authoritative accounting guidance. Liabilities of the underlying consolidated entities were included in long-term debt. The carrying value of the asset 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 other real estate owned. 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, 2013:
			Minimum			Maximum			Average
	Residential Prime Non-Agency Mortgage-Backed Securities (a)
	Estimated lifetime prepayment rates			6	%		20	%		13	%
	Lifetime probability of default rates			–			7			4
	Lifetime loss severity rates			25			65			42
	Discount margin			2			5			4
	Residential Non-Prime Non-Agency Mortgage-Backed Securities (b)
	Estimated lifetime prepayment rates			2	%		10	%		6	%
	Lifetime probability of default rates			4			12			8
	Lifetime loss severity rates			15			70			54
	Discount margin			1			6			3
	Other Asset-Backed Securities
	Estimated lifetime prepayment rates			6	%		6	%		6	%
	Lifetime probability of default rates			5			5			5
	Lifetime loss severity rates			40			40			40
	Discount margin			7			7			7
	(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 discount rate used to calculate the present value of the 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 discount rate. Prepayment rates generally move in the opposite direction of market interest rates. Discount rates are generally impacted by changes in market return requirements.
	The following table shows the significant valuation assumption ranges for MSRs at December 31, 2013:
			Minimum			Maximum			Average
	Expected prepayment			10	%		21	%		11	%
	Discount rate			10			13			10
	Derivatives The Company has two distinct Level 3 derivative portfolios: (i) the Company’s commitments to sell, 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.
	The significant unobservable inputs used in the fair value measurement of the Company’s derivative commitments to sell, 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 sell, purchase and originate mortgage loans at December 31, 2013:
			Minimum			Maximum			Average
	Expected loan close rate			43	%		100	%		80	%
	Inherent MSR value (basis points per loan)			48			221			124
	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, 2013, the minimum, maximum and average credit valuation adjustment as a percentage of the derivative contract fair value prior to adjustment was 0 percent, 100 percent and 7 percent, respectively.
	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, 2013
Available-for-sale securities
U.S. Treasury and agencies		$	7		$	1,038		$	–		$	–		$	1,045
Mortgage-backed securities
Residential
Agency			–			31,553			–			–			31,553
Non-agency
Prime (a)			–			–			478			–			478
Non-prime (b)			–			–			297			–			297
Commercial
Agency			–			152			–			–			152
Asset-backed securities
Collateralized debt obligations/Collateralized loan obligations			–			24			–			–			24
Other			–			566			63			–			629
Obligations of state and political subdivisions			–			5,738			–			–			5,738
Obligations of foreign governments			–			6			–			–			6
Corporate debt securities			–			631			9			–			640
Perpetual preferred securities			–			212			–			–			212
Other investments			141			20			–			–			161
Total available-for-sale			148			39,940			847			–			40,935
Mortgage loans held for sale			–			3,263			–			–			3,263
Mortgage servicing rights			–			–			2,680			–			2,680
Derivative assets			–			889			515			(599	)		805
Other assets			143			588			–			–			731
Total		$	291		$	44,680		$	4,042		$	(599	)	$	48,414
Derivative liabilities		$	–		$	1,647		$	70		$	(1,192	)	$	525
Short-term borrowings (c)			112			551			–			–			663
Total		$	112		$	2,198		$	70		$	(1,192	)	$	1,188
December 31, 2012
Available-for-sale securities
U.S. Treasury and agencies		$	491		$	735		$	–		$	–		$	1,226
Mortgage-backed securities
Residential
Agency			–			29,495			–			–			29,495
Non-agency
Prime (a)			–			–			624			–			624
Non-prime (b)			–			–			355			–			355
Commercial
Agency			–			193			–			–			193
Asset-backed securities
Collateralized debt obligations/Collateralized loan obligations			–			42			–			–			42
Other			–			577			15			–			592
Obligations of state and political subdivisions			–			6,455			–			–			6,455
Obligations of foreign governments			–			6			–			–			6
Corporate debt securities			–			722			9			–			731
Perpetual preferred securities			–			218			–			–			218
Other investments			187			15			–			–			202
Total available-for-sale			678			38,458			1,003			–			40,139
Mortgage loans held for sale			–			7,957			–			–			7,957
Mortgage servicing rights			–			–			1,700			–			1,700
Derivative assets			–			572			1,234			(418	)		1,388
Other assets			94			386			–			–			480
Total		$	772		$	47,373		$	3,937		$	(418	)	$	51,664
Derivative liabilities		$	–		$	2,128		$	55		$	(1,549	)	$	634
Short-term borrowings (c)			50			351			–			–			401
Total		$	50		$	2,479		$	55		$	(1,549	)	$	1,035
(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)	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		Net Change in
		of Period			(Losses)			(Losses)									Payments									of Period		Unrealized Gains
		Balance			Included in			Included in																		Balance		(Losses) Relating
					Net Income			Other																				to Assets and
								Comprehensive																				Liabilities
								Income (Loss)																				Still Held at
																												End of Period
2013
Available-for-sale securities
Mortgage-backed securities
Residential non-agency
Prime (a)		$	624		$	(6	)	$	8		$	–		$	–		$	(148	)	$	–		$	–		$	478	$	9
Non-prime (b)			355			(13	)		17			–			(20	)		(42	)		–			–			297		17
Asset-backed securities
Other			15			3			1			51			–			(7	)		–			–			63		–
Corporate debt securities			9			–			–			–			–			–			–			–			9		–
Total available-for-sale			1,003			(16	)(c)		26	(f)		51			(20	)		(197	)		–			–			847		26
Mortgage servicing rights			1,700			203	(d)		–			8			–			–			769	(g)		–			2,680		203	(d)
Net derivative assets and liabilities			1,179			(18	)(e)		–			1			(5	)		–			–			(712	)		445		(321	)(h)
2012
Available-for-sale securities
Mortgage-backed securities
Residential non-agency
Prime (a)		$	803		$	(10	)	$	91		$	–		$	(109	)	$	(151	)	$	–		$	–		$	624	$	65
Non-prime (b)			802			(24	)		228			–			(562	)		(89	)		–			–			355		80
Commercial non-agency			42			1			–			–			(38	)		(5	)		–			–			–		–
Asset-backed securities
Collateralized debt obligations/Collateralized loan obligations			120			13			(8	)		–			(104	)		(21	)		–			–			–		–
Other			117			7			–			3			(93	)		(19	)		–			–			15		2
Corporate debt securities			9			–			–			–			–			–			–			–			9		–
Total available-for-sale			1,893			(13	)(i)		311	(f)		3			(906	)		(285	)		–			–			1,003		147
Mortgage servicing rights			1,519			(818	)(d)		–			42			–			–			957	(g)		–			1,700		(818	)(d)
Net derivative assets and liabilities			1,228			2,398	(j)		–			3			(5	)		–			–			(2,445	)		1,179		150	(k)
2011
Available-for-sale securities
Mortgage-backed securities
Residential non-agency
Prime (a)		$	1,103		$	6		$	4		$	–		$	(115	)	$	(195	)	$	–		$	–		$	803	$	(4	)
Non-prime (b)			947			(7	)		1			–			(13	)		(126	)		–			–			802		1
Commercial non-agency			50			3			(3	)		–			(4	)		(4	)		–			–			42		(2	)
Asset-backed securities
Collateralized debt obligations/Collateralized loan obligations			135			13			5			–			–			(33	)		–			–			120		5
Other			133			10			(7	)		5			–			(24	)		–			–			117		(7	)
Corporate debt securities			9			–			–			–			–			–			–			–			9		–
Total available-for-sale			2,377			25	(l)		–	(f)		5			(132	)		(382	)		–			–			1,893		(7	)
Mortgage servicing rights			1,837			(972	)(d)		–			35			–			–			619	(g)		–			1,519		(972	)(d)
Net derivative assets and liabilities			851			1,550	(m)		–			1			(8	)		–			–			(1,166	)		1,228		442	(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 $(14) million included in securities gains (losses) and $(2) million included in interest income.
(d)	Included in mortgage banking revenue.
(e)	Approximately $(149) million included in other noninterest income and $131 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 $(340) million included in other noninterest income and $19 million included in mortgage banking revenue.
(i)	Approximately $(47) million included in securities gains (losses) and $34 million included in interest income.
(j)	Approximately $359 million included in other noninterest income and $2.0 billion included in mortgage banking revenue.
(k)	Approximately $(109) million included in other noninterest income and $259 million included in mortgage banking revenue.
(l)	Approximately $(31) million included in securities gains (losses) and $56 million included in interest income.
(m)	Approximately $716 million included in other noninterest income and $834 million included in mortgage banking revenue.
(n)	Approximately $262 million included in other noninterest income and $180 million included in mortgage banking revenue.
The Company is also required periodically to measure certain other financial assets at fair value on a nonrecurring basis. These measurements of fair value usually result from the application of lower-of-cost-or-fair value accounting or write-downs of individual assets.
The following table summarizes the balances of assets measured at fair value on a nonrecurring basis as of December 31:
		2013												2012
(Dollars in Millions)		Level 1			Level 2			Level 3			Total			Level 1			Level 2			Level 3			Total
Loans (a)		$	–		$	–		$	128		$	128		$	–		$	–		$	140		$	140
Other assets (b)			–			–			150			150			–			–			194			194
(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.
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)		2013			2012			2011
Loans (a)		$	83		$	68		$	177
Other assets (b)			96			160			316
(a)	Represents 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.
Fair Value Option
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:
		2013									2012
(Dollars in Millions)		Fair Value			Aggregate			Carrying			Fair Value			Aggregate			Carrying
		Carrying			Unpaid			Amount Over			Carrying			Unpaid			Amount Over
		Amount			Principal			(Under) Unpaid			Amount			Principal			(Under) Unpaid
								Principal									Principal
Total loans		$	3,263		$	3,195		$	68		$	7,957		$	7,588		$	369
Nonaccrual loans			9			14			(5	)		8			13			(5	)
Loans 90 days or more past due			–			–			–			2			3			(1	)
Disclosures about Fair Value of Financial Instruments
The following table summarizes the estimated fair value for financial instruments as of December 31, 2013 and 2012, and includes financial instruments that are not accounted for at fair value. In accordance with disclosure guidance related to fair values of financial instruments, the Company did not include assets and liabilities that are not financial instruments, such as the value of goodwill, long-term relationships with deposit, credit card, merchant processing and trust customers, other purchased intangibles, premises and equipment, deferred taxes and other liabilities. Additionally, in accordance with the disclosure guidance, insurance contracts and investments accounted for under the equity method are excluded.
The estimated fair values of the Company’s financial instruments as of December 31, are shown in the table below:
		2013															2012
		Carrying			Fair Value												Carrying			Fair Value
(Dollars in Millions)		Amount			Level 1			Level 2			Level 3			Total			Amount			Level 1			Level 2			Level 3		Total
Financial Assets
Cash and due from banks		$	8,477		$	8,477		$	–		$	–		$	8,477		$	8,252		$	8,252		$	–		$	–	$	8,252
Federal funds sold and securities purchased under resale agreements			163			–			163			–			163			437			–			437			–		437
Investment securities held-to-maturity			38,920			2,589			35,678			101			38,368			34,389			2,984			31,845			123		34,952
Loans held for sale (a)			5			–			–			5			5			19			–			–			19		19
Loans (b)			230,857			–			–			231,480			231,480			218,765			–			–			220,354		220,354
Other financial instruments			2,422			–			1,080			1,362			2,442			7,367			–			1,228			6,157		7,385
Financial Liabilities
Deposits			262,123			–			262,200			–			262,200			249,183			–			249,594			–		249,594
Short-term borrowings (c)			26,945			–			26,863			–			26,863			25,901			–			25,917			–		25,917
Long-term debt			20,049			–			20,391			–			20,391			25,516			–			26,205			–		26,205
(a)	Excludes mortgages held for sale for which the fair value option under applicable accounting guidance was elected.
(b)	Excludes loans measured at fair value on a nonrecurring basis.
(c)	Excludes the Company’s obligation on securities sold short required to be accounted for at fair value per applicable accounting guidance.
The fair value of unfunded commitments, standby letters of credit and other guarantees is approximately equal to their carrying value. The carrying value of unfunded commitments and standby letters of credit was $382 million and $415 million at December 31, 2013 and 2012, respectively. The carrying value of other guarantees was $278 million and $452 million at December 31, 2013 and 2012, respectively.

Guarantees_and_Contingent_Liab

Guarantees and Contingent Liabilities	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Guarantees and Contingent Liabilities	'
	NOTE 22	Guarantees and Contingent Liabilities
	Visa Restructuring and Card Association Litigation The Company’s payment services business issues 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 settlement has been approved by the court, but has been challenged by some class members and is being appealed. At December 31, 2013, the carrying amount of the Company’s liability related to the Visa Litigation matters, net of its share of the escrow fundings, was $41 million and included the Company’s estimate of its remaining share of the temporary reduction in interchange rates specified in the settlement agreement. The remaining Class B shares held by the Company will be eligible for conversion to Class A shares, and thereby become marketable, upon final settlement of the Visa Litigation. These 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, 2013, excluding those commitments considered derivatives, were as follows:
			Term
	(Dollars in Millions)		Less Than			Greater Than				Total
			One Year			One Year
	Commercial and commercial real estate		$	20,321		$	83,530			$	103,851
	Corporate and purchasing cards (a)			20,007			–				20,007
	Residential mortgages			98			11				109
	Retail credit cards (a)			71,192			264				71,456
	Other retail			11,382			17,733				29,115
	Covered			31			807				838
	Federal funds			4,898			–				4,898
	(a)	Primarily cancelable at the Company’s discretion.
	Lease Commitments Rental expense for operating leases totaled $311 million in 2013, $295 million in 2012 and $291 million in 2011. 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, 2013:
	(Dollars in Millions)		Capitalized					Operating
			Leases					Leases
	2014		$	9				$	244
	2015			8					215
	2016			8					182
	2017			6					154
	2018			6					116
	Thereafter			25					474
	Total minimum lease payments			62				$	1,385
	Less amount representing interest			23
	Present value of net minimum lease payments		$	39
	Other Guarantees and Contingent Liabilities
	The following table is a summary of other guarantees and contingent liabilities of the Company at December 31, 2013:
	(Dollars in Millions)		Collateral			Carrying				Maximum
			Held			Amount				Potential
										Future
										Payments
	Standby letters of credit		$	–		$	71			$	16,891
	Third-party borrowing arrangements			–			–				12
	Securities lending indemnifications			5,397			–				5,261
	Asset sales			–			185				3,656
	Merchant processing			648			69				83,496
	Contingent consideration arrangements			–			12				12
	Tender option bond program guarantee			4,604			–				4,575
	Minimum revenue guarantees			–			12				12
	Other			–			–				468
	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 issues 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 nonperformance, the Company’s credit loss exposure is the same as 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, 2013, were approximately $16.9 billion with a weighted-average term of approximately 21 months. The estimated fair value of standby letters of credit was approximately $71 million at December 31, 2013.
	The contract or notional amount of letters of credit at December 31, 2013, were as follows:
			Term
	(Dollars in Millions)		Less Than			Greater				Total
			One Year			Than
						One Year
	Standby		$	7,778		$	9,113			$	16,891
	Commercial			252			43				295
	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; indemnification or buy-back provisions related to certain asset sales; and contingent consideration arrangements related to acquisitions. 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 The Company provides guarantees to third parties as a part of certain subsidiaries’ borrowing arrangements. The maximum potential future payments guaranteed by the Company under these arrangements were approximately $12 million at December 31, 2013.
	Commitments from Securities Lending The Company participates in securities lending activities by acting as the customer’s agent involving the loan of securities. The Company indemnifies customers for the difference between the fair value of the securities lent and the fair value of the collateral received. Cash collateralizes these transactions. The maximum potential future payments guaranteed by the Company under these arrangements were approximately $5.3 billion at December 31, 2013, and represented the fair value of the securities lent to third parties. At December 31, 2013, the Company held $5.4 billion of cash as collateral for these arrangements.
	Asset Sales The Company has provided guarantees to certain third parties in connection with the sale or syndication of certain assets, primarily loan portfolios and tax-advantaged investments. These guarantees are generally in the form of asset buy-back or make-whole provisions that are triggered upon a credit event or a change in the tax-qualifying status of the related projects, as applicable, and remain in effect until the loans are collected or final tax credits are realized, respectively. The maximum potential future payments guaranteed by the Company under these arrangements were approximately $3.7 billion at December 31, 2013, and represented the proceeds received from the buyer or the guaranteed portion in these transactions where the buy-back or make-whole provisions have not yet expired. At December 31, 2013, the Company had reserved $102 million for potential losses related to the sale or syndication of tax-advantaged investments.
	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 representation 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, 2013, the Company had reserved $83 million for potential losses from representation and warranty obligations, compared with $240 million at December 31, 2012. The $157 million decrease reflected the settlement of substantially all representation and warranty obligations on loans sold to the Federal Home Loan Mortgage Corporation (“Freddie Mac”) between 2000 and 2008. 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.
	The following table is a rollforward of the Company’s representation and warranty reserve:
	Year Ended December 31		2013			2012				2011
	(Dollars in Millions)
	Balance at beginning of period		$	240		$	160			$	180
	Net realized losses			(115	)		(120	)			(137	)
	Change in reserve			(42	)		200				117
Balance at end of period		$	83		$	240			$	160
As of December 31, 2013 and 2012, the Company had $89 million and $131 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 The Company, through its subsidiaries, provides merchant processing services. Under the rules of credit card associations, a merchant processor retains a contingent liability for credit card transactions processed. This contingent liability arises in the event of a billing dispute between the merchant and a cardholder that is ultimately resolved in the cardholder’s favor. In this situation, the transaction is “charged-back” to the merchant and the disputed amount is credited or otherwise refunded to the cardholder. If the Company is unable to collect this amount from the merchant, it bears the loss for the amount of the refund paid to the cardholder.
A cardholder, through its issuing bank, generally has until the latter 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 $83.5 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 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, Mexico and Brazil 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 delayed 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, 2013, the value of airline tickets purchased to be delivered at a future date was $5.2 billion. The Company held collateral of $538 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 $23 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, 2013, the liability was $58 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, 2013, the Company held $87 million of merchant escrow deposits as collateral and had a recorded liability for potential losses of $11 million.
Contingent Consideration Arrangements The Company has contingent payment obligations related to certain business combination transactions. Payments are guaranteed as long as certain post-acquisition performance-based criteria are met or customer relationships are maintained. At December 31, 2013, the maximum potential future payments required to be made by the Company under these arrangements was approximately $12 million. If required, the majority of these contingent payments are payable within the next 12 months.
Tender Option Bond Program Guarantee As discussed in Note 7, the Company sponsors a municipal bond securities tender option bond program and consolidates the program’s entities on its Consolidated Balance Sheet. The Company provides financial performance guarantees related to the program’s entities. At December 31, 2013, the Company guaranteed $4.6 billion of borrowings of the program’s entities, included on the Consolidated Balance Sheet in short-term borrowings. The Company also included on its Consolidated Balance Sheet the related $4.6 billion of available-for-sale investment securities serving as collateral for this arrangement.
Minimum Revenue Guarantees In the normal course of business, the Company may enter into revenue share agreements with third party business partners who generate customer referrals or provide marketing or other services related to the generation of revenue. In certain of these agreements, the Company may guarantee that a minimum amount of revenue share payments will be made to the third party over a specified period of time. At December 31, 2013, the maximum potential future payments required to be made by the Company under these agreements were $12 million and the Company had recorded a related liability of $12 million.
Other Guarantees and Commitments The Company has also made other financial performance guarantees and commitments related to the operations of its subsidiaries. At December 31, 2013, the maximum potential future payments guaranteed or committed by the Company under these arrangements were approximately $468 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, 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.
Certain federal and state governmental authorities reached settlement agreements in 2012 and 2013 with other major financial institutions regarding their mortgage origination, servicing, and foreclosure activities. Those governmental authorities have had settlement discussions with other financial institutions, including the Company. The Company has not agreed to any settlement; however, if a settlement were reached it would likely include an agreement to comply with specified servicing standards, and settlement payments to governmental authorities as well as a monetary commitment that could be satisfied under various loan modification programs (in addition to the programs the Company already has in place).
The Company is currently subject to other investigations and examinations by government agencies and bank regulators concerning mortgage-related practices, including those related to origination practices for Federal Housing Administration insured residential home loans, compliance with selling guidelines relating to residential home loans sold to GSEs, and various practices related to lender-placed insurance. The Company is cooperating fully with these examinations and investigations, any of which could lead to administrative or legal proceedings or settlements involving remedies including fines, penalties, restitution or alterations in the Company’s business practices and in additional costs and expenses.
Due to their complex nature, it can be years before litigation and regulatory matters are resolved. For those litigation and regulatory matters where the Company has information to develop an estimate or range of loss, the Company believes the upper end of reasonably possible losses in aggregate, in excess of any reserves established for matters where a loss is considered probable, is approximately $200 million. This estimate is subject to significant judgment and uncertainties and the matters underlying the estimate will change from time to time. Actual results may vary significantly from the current estimates.

US_Bancorp_Parent_Company

U.S. Bancorp (Parent Company)	12 Months Ended
	Dec. 31, 2013
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)		2013			2012
	Assets
	Due from banks, principally interest-bearing		$	8,371		$	3,630
	Available-for-sale securities			463			425
	Investments in bank subsidiaries			37,558			38,007
	Investments in nonbank subsidiaries			1,546			1,445
	Advances to bank subsidiaries			2,250			6,173
	Advances to nonbank subsidiaries			1,534			1,404
	Other assets			1,628			1,550
	Total assets		$	53,350		$	52,634
	Liabilities and Shareholders’ Equity
	Short-term funds borrowed		$	138		$	134
	Long-term debt			11,416			12,772
	Other liabilities			683			730
	Shareholders’ equity			41,113			38,998
	Total liabilities and shareholders’ equity		$	53,350		$	52,634
	Condensed Statement of Income
	Year Ended December 31 (Dollars in Millions)		2013			2012			2011
	Income
	Dividends from bank subsidiaries		$	6,100		$	250		$	1,500
	Dividends from nonbank subsidiaries			9			4			7
	Interest from subsidiaries			118			96			101
	Other income			66			149			134
	Total income			6,293			499			1,742
	Expense
	Interest expense			325			393			425
	Other expense			81			122			79
	Total expense			406			515			504
	Income (loss) before income taxes and equity in undistributed income of subsidiaries			5,887			(16	)		1,238
	Applicable income taxes			(88	)		(85	)		(83	)
	Income of parent company			5,975			69			1,321
	Equity in undistributed income (losses) of subsidiaries			(139	)		5,578			3,551
	Net income attributable to U.S. Bancorp		$	5,836		$	5,647		$	4,872
	Condensed Statement of Cash Flows
	Year Ended December 31 (Dollars in Millions)		2013			2012			2011
	Operating Activities
	Net income attributable to U.S. Bancorp		$	5,836		$	5,647		$	4,872
	Adjustments to reconcile net income to net cash provided by operating activities
	Equity in undistributed (income) losses of subsidiaries			139			(5,578	)		(3,551	)
	Other, net			(40	)		(35	)		12
	Net cash provided by operating activities			5,935			34			1,333
	Investing Activities
	Proceeds from sales and maturities of investment securities			75			979			297
	Purchases of investment securities			(118	)		(35	)		(36	)
	Equity distributions from subsidiaries			12			845			77
	Net (increase) decrease in short-term advances to subsidiaries			4,543			207			(4,613	)
	Long-term advances to subsidiaries			(750	)		(500	)		–
	Other, net			(9	)		(22	)		(3	)
	Net cash provided by (used in) investing activities			3,753			1,474			(4,278	)
	Financing Activities
	Net increase (decrease) in short-term borrowings			4			105			(31	)
	Proceeds from issuance of long-term debt			1,500			3,550			2,426
	Principal payments or redemption of long-term debt			(2,850	)		(5,412	)		(851	)
	Proceeds from issuance of preferred stock			487			2,163			676
	Proceeds from issuance of common stock			524			395			180
	Redemption of preferred stock			(500	)		–			–
	Repurchase of common stock			(2,282	)		(1,856	)		(514	)
	Cash dividends paid on preferred stock			(254	)		(204	)		(118	)
	Cash dividends paid on common stock			(1,576	)		(1,347	)		(817	)
	Net cash provided by (used in) financing activities			(4,947	)		(2,606	)		951
	Change in cash and due from banks			4,741			(1,098	)		(1,994	)
Cash and due from banks at beginning of year			3,630			4,728			6,722
Cash and due from banks at end of year		$	8,371		$	3,630		$	4,728
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 regulatory minimum capital constraints for all national banks.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	NOTE 24	Subsequent Events
	The Company has evaluated the impact of events that have occurred subsequent to December 31, 2013 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_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
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 generally accepted accounting principles 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, 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, in-store banking, small business banking, consumer lending, mortgage banking, workplace banking, student banking and 24-hour 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 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, most covered commercial and commercial real estate loans and related other real estate owned (“OREO”), funding, capital management, interest rate risk management, the net effect of transfer pricing related to average balances, income taxes not allocated to business lines, including most tax-advantaged investments, 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 24 “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) in shareholders’ equity. Declines in fair value related to 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 and are recorded at the amounts at which the securities were acquired or sold, plus accrued interest. The fair value of collateral received is continually monitored and additional collateral is obtained or requested to be returned to the Company as deemed appropriate.
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 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 adopted new indemnification asset accounting guidance applicable to FDIC loss-sharing agreements. The guidance requires 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) to be amortized over the shorter of the remaining contractual term of the indemnification agreements or the remaining life of the covered assets. Prior to adoption of this guidance, 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. The adoption of this guidance did not materially affect the Company’s financial statements.
	Commitments to Extend Credit Unfunded commitments for residential mortgage loans intended to be held for sale are considered derivatives and recorded on the balance sheet at fair value with changes in fair value recorded in income. All other unfunded loan commitments are not considered derivatives and are not reported on the balance sheet. For loans purchased after January 1, 2009, the fair value of the unfunded credit commitments is 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 reserves 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 13-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 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 represents any 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, incorporation of loss history is factored 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 all the loan segments 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, internal review and other relevant business practices; 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 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.
	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 considered uncollectible.
	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, and placed on nonaccrual status in instances where a partial charge-off occurs unless the loan is well secured and in the process of collection. Loans and lines in a junior lien position secured by 1-4 family properties are placed on nonaccrual status at 120 days past due or when behind a first lien that has become 180 days or greater past due or placed on nonaccrual status. Any secured consumer lending segment loan whose borrower has had debt discharged through bankruptcy, for which the loan amount exceeds the fair value of the collateral, is charged down to the fair value of the related collateral and the remaining balance is placed on nonaccrual status. Credit card loans continue to accrue interest until the account is charged off. Credit cards are charged off at 180 days past due. Other retail loans not secured by 1-4 family properties are charged-off at 120 days past due; and revolving consumer lines are charged off at 180 days past due. Similar to credit cards, other retail loans are generally not placed on nonaccrual status because of the relative short period of time to charge-off. Certain retail customers having financial difficulties may have the terms of their credit card and other loan agreements modified to require only principal payments and, as such, are reported as nonaccrual.
	For all loan classes, interest payments received on nonaccrual loans are generally recorded as a reduction to the loan carrying amount. Interest payments are generally recorded as reductions to a loan’s carrying amount while a loan is on nonaccrual and are recognized as interest income upon payoff of the loan. 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 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. Those loans are classified as nonaccrual loans and interest income is 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. 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 these 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 U.S. 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 U.S. 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, 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.
	Credit card and other retail loan modifications are generally part of two distinct restructuring programs. The Company offers workout 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. The Company also provides modification programs to qualifying customers experiencing a temporary financial hardship in which reductions are made to monthly required minimum payments for up to 12 months. Balances related to these programs are generally frozen; however, accounts may be reopened upon successful exit of the program, in which account privileges may be restored.
	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 purposes of the Company’s accounting and disclosure 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 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. 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 adopted new indemnification asset accounting guidance applicable to FDIC loss-sharing agreements. The guidance requires 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) to be amortized over the shorter of the remaining contractual term of the indemnification agreements or the remaining life of the covered assets. Prior to adoption of this guidance, 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. The adoption of this guidance did not materially affect the Company’s financial statements.
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 further decreases or subsequent increases in fair value are 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 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.
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 an 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 and Corporate Payment Products Revenue Credit and debit card revenue includes interchange income from consumer credit and debit cards, annual fees, and other transaction and account management fees. Corporate payment products revenue primarily includes interchange income from corporate and purchasing card transactions processed through card association networks and merchant discount income from closed loop network transactions. Interchange income is a fee paid by a merchant bank to the card-issuing bank through the interchange network. Interchange fees are set by the credit card associations and are based on cardholder purchase volumes. Merchant discount income is a fee paid by a merchant to the Company through the closed loop network. Merchant discount fees are set by the Company directly with the merchant. The Company records interchange and merchant discount income 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 expenses for rewards programs are also recorded within credit and debit card revenue and corporate payment products revenue. Payments to partners and expenses related to rewards programs are recorded when earned by the partner or customer.
	Merchant Processing Services Merchant processing services revenue consists principally of transaction and account management fees charged to merchants for the electronic processing of transactions, net of interchange fees paid to the card-issuing bank, card association assessments, and revenue sharing amounts, and is 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.
	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, including losses related to the repurchase of previously sold loans; 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 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.
	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.
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. In January 2014, the Financial Accounting Standards Board issued accounting guidance on the presentation of investment costs for qualified affordable housing projects on a net basis with the related tax benefits in income tax expense. This will permit the Company to apply this presentation to certain qualified affordable housing investments for which the costs were previously presented in other expense. The Company will adopt this guidance January 1, 2014 and does not expect a material impact to its financial statements.
Accounting for Investments in Qualified Affordable Housing Projects	'
	In January 2014, the Financial Accounting Standards Board issued accounting guidance on the presentation of investment costs for qualified affordable housing projects on a net basis with the related tax benefits in income tax expense. This will permit the Company to apply this presentation to certain qualified affordable housing investments for which the costs were previously presented in other expense. The Company will adopt this guidance January 1, 2014 and does not expect a material impact to its financial statements.
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, discount rates, 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 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 plans’ 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 twelve 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.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Line of Business Financial Performance	'
	Wholesale Banking and										Consumer and Small
	Commercial Real Estate										Business Banking
	Year Ended December 31		2013			2012		Percent				2013			2012			Percent
	(Dollars in Millions)							Change										Change
	Condensed Income Statement
	Net interest income (taxable-equivalent basis)		$	2,088		$	2,104		(.8	)%		$	4,554		$	4,737			(3.9	)%
	Noninterest income			1,092			1,234		(11.5	)			2,904			3,565			(18.5	)
	Securities gains (losses), net			–			–		–				–			–			–
	Total net revenue			3,180			3,338		(4.7	)			7,458			8,302			(10.2	)
	Noninterest expense			1,248			1,265		(1.3	)			4,684			4,923			(4.9	)
	Other intangibles			8			16		(50.0	)			40			51			(21.6	)
	Total noninterest expense			1,256			1,281		(2.0	)			4,724			4,974			(5.0	)
	Income before provision and income taxes			1,924			2,057		(6.5	)			2,734			3,328			(17.8	)
	Provision for credit losses			(97	)		2		*				607			1,167			(48.0	)
	Income before income taxes			2,021			2,055		(1.7	)			2,127			2,161			(1.6	)
	Income taxes and taxable-equivalent adjustment			736			748		(1.6	)			774			786			(1.5	)
	Net income			1,285			1,307		(1.7	)			1,353			1,375			(1.6	)
	Net (income) loss attributable to noncontrolling interests			–			–		–				–			(1	)		*
	Net income attributable to U.S. Bancorp		$	1,285		$	1,307		(1.7	)		$	1,353		$	1,374			(1.5	)
	Average Balance Sheet
	Commercial		$	50,873		$	45,091		12.8	%		$	8,396		$	8,225			2.1	%
	Commercial real estate			20,550			19,635		4.7				16,934			16,136			4.9
	Residential mortgages			26			60		(56.7	)			47,081			39,827			18.2
	Credit card			–			–		–				–			–			–
	Other retail			8			7		14.3				44,847			45,594			(1.6	)
	Total loans, excluding covered loans			71,457			64,793		10.3				117,258			109,782			6.8
	Covered loans			363			921		(60.6	)			6,566			7,510			(12.6	)
	Total loans			71,820			65,714		9.3				123,824			117,292			5.6
	Goodwill			1,604			1,604		–				3,515			3,515			–
	Other intangible assets			25			36		(30.6	)			2,406			1,787			34.6
	Assets			78,253			71,606		9.3				139,174			134,258			3.7
	Noninterest-bearing deposits			31,153			31,224		(.2	)			21,969			20,386			7.8
	Interest checking			10,515			10,354		1.6				33,006			29,911			10.3
	Savings products			14,144			9,413		50.3				46,308			43,342			6.8
	Time deposits			18,481			17,197		7.5				21,136			23,787			(11.1	)
	Total deposits			74,293			68,188		9				122,419			117,426			4.3
	Total U.S. Bancorp shareholders’ equity			7,356			6,436		14.3				12,148			11,268			7.8
	*	Not meaningful
	Wealth Management and										Payment										Treasury and										Consolidated
	Securities Services										Services										Corporate Support										Company
			2013			2012		Percent				2013			2012			Percent				2013			2012			Percent				2013		2012			Percent
								Change										Change										Change									Change
			$	356		$	355		0.3	%		$	1,584		$	1,548			2.3	%		$	2,246		$	2,225			0.9	%		$	10,828	$	10,969			(1.3	)%
				1,235			1,121		10.2				3,205			3,195			0.3				329			219			50.2				8,765		9,334			(6.1	)
				–			–		–				–			–			–				9			(15	)		*				9		(15	)		*
				1,591			1,476		7.8				4,789			4,743			1				2,584			2,429			6.4				19,602		20,288			(3.4	)
				1,304			1,155		12.9				1,964			1,830			7.3				851			1,009			(15.7	)			10,051		10,182			(1.3	)
				36			40		(10.0	)			139			167			(16.8	)			–			–			–				223		274			(18.6	)
				1,340			1,195		12.1				2,103			1,997			5.3				851			1,009			(15.7	)			10,274		10,456			(1.7	)
				251			281		(10.7	)			2,686			2,746			(2.2	)			1,733			1,420			22				9,328		9,832			(5.1	)
				6			14		(57.1	)			769			697			10.3				55			2			*				1,340		1,882			(28.8	)
				245			267		(8.2	)			1,917			2,049			(6.4	)			1,678			1,418			18.3				7,988		7,950			0.5
				89			96		(7.3	)			697			746			(6.6	)			(40	)		84			*				2,256		2,460			(8.3	)
				156			171		(8.8	)			1,220			1,303			(6.4	)			1,718			1,334			28.8				5,732		5,490			4.4
				–			–		–				(39	)		(38	)		(2.6	)			143			196			(27.0	)			104		157			(33.8	)
			$	156		$	171		(8.8	)		$	1,181		$	1,265			(6.6	)		$	1,861		$	1,530			21.6			$	5,836	$	5,647			3.3
			$	1,712		$	1,333		28.4	%		$	6,086		$	5,962			2.1	%		$	207		$	219			(5.5	)%		$	67,274	$	60,830			10.6	%
				650			609		6.7				–			–			–				103			125			(17.6	)			38,237		36,505			4.7
				874			400		*				–			–			–				1			3			(66.7	)			47,982		40,290			19.1
				–			–		–				16,813			16,653			1				–			–			–				16,813		16,653			1
				1,533			1,527		0.4				737			810			(9.0	)			–			–			–				47,125		47,938			(1.7	)
				4,769			3,869		23.3				23,636			23,425			0.9				311			347			(10.4	)			217,431		202,216			7.5
				14			11		27.3				5			5			–				3,095			4,711			(34.3	)			10,043		13,158			(23.7	)
			4,783			3,880		23.3				23,641			23,430			0.9				3,406			5,058			(32.7	)			227,474		215,374			5.6
			1,535			1,473		4.2				2,510			2,361			6.3				–			–			–				9,164		8,953			2.4
			173			171		1.2				572			690			(17.1	)			2			4			(50.0	)			3,178		2,688			18.2
			7,643			6,538		16.9				29,843			29,580			0.9				97,767			100,867			(3.1	)			352,680		342,849			2.9
			14,610			14,514		0.7				703			643			9.3				585			474			23.4				69,020		67,241			2.6
			4,821			3,975		21.3				449			1,192			(62.3	)			1			1			–				48,792		45,433			7.4
			26,830			23,543		14				57			39			46.2				89			133			(33.1	)			87,428		76,470			14.3
			4,906			5,105		(3.9	)			–			–			–				694			477			45.5				45,217		46,566			(2.9	)
			51,167			47,137		8.5				1,209			1,874			(35.5	)			1,369			1,085			26.2				250,457		235,710			6.3
			2,385			2,232		6.9				6,046			5,701			6.1				11,982			11,974			0.1				39,917		37,611			6.1

Investment_Securities_Tables

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]	'
Investment Securities	'
	Available-for-Sale																Held-to-Maturity
	At December 31, 2013 (Dollars in Millions)		Amortized			Fair			Weighted-				Weighted-						Amortized				Fair				Weighted-				Weighted-
			Cost			Value			Average				Average						Cost				Value				Average				Average
									Maturity				Yield (e)														Maturity				Yield (e)
									in Years																		in Years
	U.S. Treasury and Agencies
	Maturing in one year or less		$	28		$	28			0.3				4.44	%				$	1,811			$	1,814				0.2				1.01	%
	Maturing after one year through five years			32			33			2.7				3.11						80				81				1.4				1.36
	Maturing after five years through ten years			347			331			8.1				2.59						1,163				1,085				8.5				2.05
	Maturing after ten years			701			653			14.7				2.39						60				60				11.3				1.75
	Total		$	1,108		$	1,045			11.9				2.52	%				$	3,114			$	3,040				3.6				1.42	%
	Mortgage-Backed Securities (a)
	Maturing in one year or less		$	226		$	231			0.6				2.63	%				$	9			$	9				0.6				2.77	%
	Maturing after one year through five years			13,864			13,752			3.9				2.16						22,441				22,217				3.7				2.3
	Maturing after five years through ten years			16,000			16,007			5.9				1.91						12,424				12,159				5.7				1.66
	Maturing after ten years			2,474			2,490			13.1				1.2						798				809				12.8				1.24
	Total		$	32,564		$	32,480			5.5				1.97	%				$	35,672			$	35,194				4.6				2.05	%
	Asset-Backed Securities (a)
	Maturing in one year or less		$	–		$	–			–				7.65	%				$	–			$	–				–				–	%
	Maturing after one year through five years			272			282			4.1				1.31						11				14				3.4				0.79
	Maturing after five years through ten years			364			371			7.6				2.57						4				4				7.1				0.94
	Maturing after ten years			–			–			17.6				5.15						1				9				20.8				0.76
	Total		$	636		$	653			6.1				2.03	%				$	16			$	27				5				0.82	%
	Obligations of State and Political
	Subdivisions (b) (c)
	Maturing in one year or less		$	70		$	70			0.4				6.16	%				$	–			$	–				0.4				7.48	%
	Maturing after one year through five years			4,671			4,772			2.6				6.72						3				3				2				9.52
	Maturing after five years through ten years			445			438			6.6				5.8						2				2				7.3				7.85
	Maturing after ten years			487			458			20.8				6.25						7				7				12.2				2.64
	Total		$	5,673		$	5,738			4.5				6.6	%				$	12			$	12				8.9				5.02	%
	Other Debt Securities
	Maturing in one year or less		$	6		$	6			0.2				1.16	%				$	6			$	6				0.5				1.6	%
	Maturing after one year through five years			–			–			–				–						76				76				1.9				1.12
	Maturing after five years through ten years			–			–			–				–						24				13				6.8				0.98
	Maturing after ten years			734			640			21.5				2.71						–				–				–				–
	Total		$	740		$	646			21.4				2.7	%				$	106			$	95				2.9				1.12	%
	Other Investments		$	338		$	373			18.9				2.88	%				$	–			$	–				–				–	%
	Total investment securities (d)		$	41,059		$	40,935			6				2.64	%				$	38,920			$	38,368				4.5				2	%
	(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 4.1 years at December 31, 2012, with a corresponding weighted-average yield of 2.93 percent. The weighted-average maturity of the held-to-maturity investment securities was 3.3 years at December 31, 2012, with a corresponding weighted-average yield of 1.94 percent.
	(e)	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. Average yield and maturity calculations exclude equity securities that have no stated yield or maturity.
			2013								2012
	At December 31 (Dollars in Millions)		Amortized			Percent					Amortized				Percent
			Cost			of Total					Cost				of Total
	U.S. Treasury and agencies		$	4,222			5.3	%			$	4,365				5.9	%
	Mortgage-backed securities			68,236			85.3					61,019				83.1
	Asset-backed securities			652			0.8					637				0.9
	Obligations of state and political subdivisions			5,685			7.1					6,079				8.3
	Other debt securities and investments			1,184			1.5					1,329				1.8
	Total investment securities		$	79,979			100	%			$	73,429				100	%
Investment Securities Held to Maturity and 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:
			2013																				2012
									Unrealized Losses																						Unrealized Losses
	(Dollars in Millions)		Amortized			Unrealized			Other-than-				Other (f)				Fair Value						Amortized				Unrealized				Other-than-				Other (f)				Fair Value
			Cost			Gains			Temporary (e)														Cost				Gains				Temporary (e)
	Held-to-maturity (a)
	U.S. Treasury and agencies		$	3,114		$	5		$	–			$	(79	)		$	3,040					$	3,154			$	27			$	–			$	–			$	3,181
	Mortgage-backed securities
	Residential
	Agency			35,671			187			–				(665	)			35,193						31,064				545				–				(6	)			31,603
	Non-agency non-prime (d)			1			–			–				–				1						1				–				–				–				1
	Commercial non-agency			–			–			–				–				–						2				–				–				–				2
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			–			9			–				–				9						7				15				–				–				22
	Other			16			4			(1	)			(1	)			18						19				2				(3	)			(1	)			17
	Obligations of state and political subdivisions			12			–			–				–				12						20				1				–				–				21
	Obligations of foreign governments			7			–			–				–				7						7				–				–				–				7
	Other debt securities			99			–			–				(11	)			88						115				–				–				(17	)			98
	Total held-to-maturity		$	38,920		$	205		$	(1	)		$	(756	)		$	38,368					$	34,389			$	590			$	(3	)		$	(24	)		$	34,952
	Available-for-sale (b)
	U.S. Treasury and agencies		$	1,108		$	4		$	–			$	(67	)		$	1,045					$	1,211			$	16			$	–			$	(1	)		$	1,226
	Mortgage-backed securities
	Residential
	Agency			31,633			449			–				(529	)			31,553						28,754				746				–				(5	)			29,495
	Non-agency
	Prime (c)			486			4			(8	)			(4	)			478						641				3				(16	)			(4	)			624
	Non-prime (d)			297			5			(5	)			–				297						372				4				(20	)			(1	)			355
	Commercial agency			148			4			–				–				152						185				8				–				–				193
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			20			4			–				–				24						32				10				–				–				42
	Other			616			13			–				–				629						579				14				–				(1	)			592
	Obligations of state and political subdivisions			5,673			116			–				(51	)			5,738						6,059				396				–				–				6,455
	Obligations of foreign governments			6			–			–				–				6						6				–				–				–				6
	Corporate debt securities			734			–			–				(94	)			640						814				2				–				(85	)			731
	Perpetual preferred securities			205			24			–				(17	)			212						205				27				–				(14	)			218
	Other investments			133			28			–				–				161						182				20				–				–				202
	Total available-for-sale		$	41,059		$	651		$	(13	)		$	(762	)		$	40,935					$	39,040			$	1,246			$	(36	)		$	(111	)		$	40,139
	(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)		2013			2012			2011
	Taxable		$	1,375		$	1,515		$	1,517
	Non-taxable			256			277			303
	Total interest income from investment securities		$	1,631		$	1,792		$	1,820
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)		2013			2012			2011
	Realized gains		$	23		$	158		$	11
	Realized losses			–			(99	)		(7	)
	Net realized gains (losses)		$	23		$	59		$	4
	Income tax (benefit) on net realized gains (losses)		$	9		$	23		$	2
Summary of Other than Temporary Impairment by Investment Category	'
	The following table summarizes other-than-temporary impairment by investment category:
			2013												2012														2011
	Year Ended December 31 (Dollars in Millions)		Losses			Other Gains			Total						Losses				Other Gains				Total						Losses				Other Gains				Total
			Recorded in			(Losses) (c)									Recorded				(Losses) (c)										Recorded				(Losses) (c)
			Earnings												in Earnings														in Earnings
	Available-for-sale
	Mortgage-backed securities
	Non-agency residential
	Prime (a)		$	(6	)	$	2		$	(4	)				$	(12	)		$	(9	)		$	(21	)				$	(3	)		$	(5	)		$	(8	)
	Non-prime (b)			(8	)		6			(2	)					(33	)			21				(12	)					(24	)			(23	)			(47	)
	Commercial non-agency			–			–			–						(1	)			(1	)			(2	)					–				–				–
	Other asset-backed securities			–			–			–						(1	)			1				–						(4	)			3				(1	)
	Obligations of state and political subdivisions			–			–			–						–				–				–						(4	)			–				(4	)
	Perpetual preferred securities			–			–			–						(27	)			–				(27	)					–				–				–
	Total available-for-sale		$	(14	)	$	8		$	(6	)				$	(74	)		$	12			$	(62	)				$	(35	)		$	(25	)		$	(60	)
	(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)	Losses represent the non-credit portion of other-than-temporary impairment recorded in other comprehensive income (loss) for investment securities determined to be other-than-temporarily impaired during the period. Gains represent recoveries in the fair value of securities that had non-credit other-than-temporary impairment during the period.
Summary of Ranges used in Valuation of Non-Agency Mortgage-Backed Securities Other than Temporarily Impaired	'
	The following table includes the ranges for significant assumptions used for those available-for-sale non-agency mortgage-backed securities determined to be other-than-temporarily impaired:
			Prime (a)												Non-Prime (b)
			Minimum			Maximum			Average						Minimum				Maximum				Average
	December 31, 2013
	Estimated lifetime prepayment rates			7	%		18	%		15	%					4	%			9	%			5	%
	Lifetime probability of default rates			3			7			5						7				12				9
	Lifetime loss severity rates			30			50			48						50				65				58
	December 31, 2012
	Estimated lifetime prepayment rates			6	%		22	%		14	%					3	%			10	%			6	%
	Lifetime probability of default rates			3			6			4						3				10				7
	Lifetime loss severity rates			40			50			47						45				65				56
	(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.
Changes in Credit Losses on Debt Securities	'
	Changes in the credit losses on debt securities (excluding perpetual preferred securities) are summarized as follows:
	Year Ended December 31 (Dollars in Millions)		2013			2012			2011
	Balance at beginning of period		$	134		$	298		$	358
	Additions to Credit Losses Due to Other-than-temporary Impairments
	Credit losses on securities not previously considered other-than-temporarily impaired			–			6			7
	Decreases in expected cash flows on securities for which other-than-temporary impairment was previously recognized			14			41			28
	Total other-than-temporary impairment on debt securities			14			47			35
	Other Changes in Credit Losses
	Increases in expected cash flows			(2	)		(15	)		(21	)
	Realized losses (a)			(23	)		(39	)		(73	)
	Credit losses on security sales and securities expected to be sold			(7	)		(157	)		(1	)
	Balance at end of period		$	116		$	134		$	298
	(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 Investments with Unrealized Losses	'
	At December 31, 2013, 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, 2013:
			Less Than 12 Months								12 Months or Greater										Total
	(Dollars in Millions)		Fair Value			Unrealized					Fair Value				Unrealized						Fair Value				Unrealized
						Losses									Losses										Losses
	Held-to-maturity
	U.S. Treasury and agencies		$	1,085		$	(79	)			$	–			$	–					$	1,085			$	(79	)
	Mortgage-backed securities
	Residential agency			23,922			(647	)				373				(18	)					24,295				(665	)
	Other asset-backed securities			–			–					10				(2	)					10				(2	)
	Obligations of state and political subdivisions			3			–					–				–						3				–
	Other debt securities			–			–					12				(11	)					12				(11	)
	Total held-to-maturity		$	25,010		$	(726	)			$	395			$	(31	)				$	25,405			$	(757	)
	Available-for-sale
	U.S. Treasury and agencies		$	849		$	(59	)			$	93			$	(8	)				$	942			$	(67	)
	Mortgage-backed securities
	Residential
	Agency			14,015			(484	)				1,056				(45	)					15,071				(529	)
	Non-agency (a)
	Prime (b)			65			(1	)				182				(11	)					247				(12	)
	Non-prime (c)			74			(1	)				57				(4	)					131				(5	)
	Other asset-backed securities			23			–					3				–						26				–
	Obligations of state and political subdivisions			1,479			(51	)				10				–						1,489				(51	)
	Corporate debt securities			223			(5	)				418				(89	)					641				(94	)
	Perpetual preferred securities			–			–					116				(17	)					116				(17	)
	Total available-for-sale		$	16,728		$	(601	)			$	1,935			$	(174	)				$	18,663			$	(775	)
	(a)	The Company has $17 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_Credit1

Loans and Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2013
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)		2013			2012
	Commercial
	Commercial		$	64,762		$	60,742
	Lease financing			5,271			5,481
	Total commercial			70,033			66,223
	Commercial Real Estate
	Commercial mortgages			32,183			31,005
	Construction and development			7,702			5,948
	Total commercial real estate			39,885			36,953
	Residential Mortgages
	Residential mortgages			37,545			32,648
	Home equity loans, first liens			13,611			11,370
	Total residential mortgages			51,156			44,018
	Credit Card			18,021			17,115
	Other Retail
	Retail leasing			5,929			5,419
	Home equity and second mortgages			15,442			16,726
	Revolving credit			3,276			3,332
	Installment			5,709			5,463
	Automobile			13,743			12,593
	Student			3,579			4,179
	Total other retail			47,678			47,712
	Total loans, excluding covered loans			226,773			212,021
	Covered Loans			8,462			11,308
	Total loans		$	235,235		$	223,329
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)		2013			2012			2011
	Balance at beginning of period		$	1,709		$	2,619		$	2,890
	Purchases			–			13			100
	Accretion			(499	)		(437	)		(451	)
	Disposals			(172	)		(208	)		(67	)
	Reclassifications from nonaccretable difference (a)			258			454			184
	Other (b)			359			(732	)		(37	)
	Balance at end of period		$	1,655		$	1,709		$	2,619
	(a)	Primarily relates to changes in expected credit performance.
	(b)	The amount for the year ended December 31, 2013, primarily represents the reclassification of unamortized decreases in the FDIC asset (which are now presented as a separate component within the covered assets table on page 101), partially offset by the impact of changes in expectations about retaining covered single-family loans beyond the term of the indemnification agreements. The amount for the year end December 31, 2012, primarily represents a change in the Company’s expectations regarding potential sale of modified covered loans at the end of the indemnification agreements which results in a reduction in the expected contractual interest payments included in the accretable balance for those loans that may be sold.
Activity in Allowance for Credit Losses	'
	Activity in the allowance for credit losses by portfolio class was as follows:
	(Dollars in Millions)		Commercial			Commercial			Residential				Credit				Other				Total Loans,				Covered				Total
						Real Estate			Mortgages				Card				Retail				Excluding				Loans				Loans
																					Covered Loans
	Balance at December 31, 2010		$	1,104		$	1,291		$	820			$	1,395			$	807			$	5,417			$	114			$	5,531
	Add
	Provision for credit losses			312			361			596				431				628				2,328				15				2,343
	Deduct
	Loans charged off			516			543			502				922				733				3,216				13				3,229
	Less recoveries of loans charged off			(110	)		(45	)		(13	)			(88	)			(129	)			(385	)			(1	)			(386	)
	Net loans charged off			406			498			489				834				604				2,831				12				2,843
	Other changes (a)			–			–			–				–				–				–				(17	)			(17	)
	Balance at December 31, 2011		$	1,010		$	1,154		$	927			$	992			$	831			$	4,914			$	100			$	5,014
	Add
	Provision for credit losses			316			(131	)		446				571				558				1,760				122				1,882
	Deduct
	Loans charged off			378			242			461				769				666				2,516				11				2,527
	Less recoveries of loans charged off			(103	)		(76	)		(23	)			(102	)			(125	)			(429	)			(1	)			(430	)
	Net loans charged off			275			166			438				667				541				2,087				10				2,097
	Other changes (a)			–			–			–				(33	)			–				(33	)			(33	)			(66	)
	Balance at December 31, 2012		$	1,051		$	857		$	935			$	863			$	848			$	4,554			$	179			$	4,733
	Add
	Provision for credit losses			144			(114	)		212				677				351				1,270				70				1,340
	Deduct
	Loans charged off			246			92			297				739				523				1,897				37				1,934
	Less recoveries of loans charged off			(126	)		(125	)		(25	)			(83	)			(105	)			(464	)			(5	)			(469	)
	Net loans charged off			120			(33	)		272				656				418				1,433				32				1,465
	Other changes (a)			–			–			–				–				–				–				(71	)			(71	)
	Balance at December 31, 2013		$	1,075		$	776		$	875			$	884			$	781			$	4,391			$	146			$	4,537
	(a)	Includes net changes in credit losses to be reimbursed by the FDIC and for the year ended December 31, 2013, 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.
Additional Detail of Allowance for Credit Losses and Related Loan Balances by Portfolio Type	'
	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
						Real Estate			Mortgages				Card				Retail				Excluding				Loans				Loans
																					Covered Loans
	Allowance Balance at December 31, 2013 Related to
	Loans individually evaluated for impairment (a)		$	15		$	17		$	–			$	–			$	–			$	32			$	–			$	32
	TDRs collectively evaluated for impairment			19			26			329				87				55				516				4				520
	Other loans collectively evaluated for impairment			1,041			700			546				797				726				3,810				5				3,815
	Loans acquired with deteriorated credit quality			–			33			–				–				–				33				137				170
	Total allowance for credit losses		$	1,075		$	776		$	875			$	884			$	781			$	4,391			$	146			$	4,537
	Allowance Balance at December 31, 2012 Related to
	Loans individually evaluated for impairment (a)		$	10		$	30		$	–			$	–			$	–			$	40			$	–			$	40
	TDRs collectively evaluated for impairment			28			29			446				153				97				753				1				754
	Other loans collectively evaluated for impairment			1,013			791			489				710				751				3,754				17				3,771
	Loans acquired with deteriorated credit quality			–			7			–				–				–				7				161				168
	Total allowance for credit losses		$	1,051		$	857		$	935			$	863			$	848			$	4,554			$	179			$	4,733
	(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				Total
						Real Estate			Mortgages				Card				Retail				Excluding				Loans (b)				Loans
																					Covered Loans
	December 31, 2013
	Loans individually evaluated for impairment (a)		$	197		$	237		$	–			$	–			$	–			$	434			$	62			$	496
	TDRs collectively evaluated for impairment			155			358			5,064				310				269				6,156				87				6,243
	Other loans collectively evaluated for impairment			69,680			39,128			46,090				17,711				47,409				220,018				4,539				224,557
	Loans acquired with deteriorated credit quality			1			162			2				–				–				165				3,774				3,939
	Total loans		$	70,033		$	39,885		$	51,156			$	18,021			$	47,678			$	226,773			$	8,462			$	235,235
	December 31, 2012
	Loans individually evaluated for impairment (a)		$	171		$	510		$	–			$	–			$	–			$	681			$	48			$	729
	TDRs collectively evaluated for impairment			185			391			4,199				442				313				5,530				145				5,675
	Other loans collectively evaluated for impairment			65,863			35,952			39,813				16,673				47,399				205,700				5,814				211,514
	Loans acquired with deteriorated credit quality			4			100			6				–				–				110				5,301				5,411
	Total loans		$	66,223		$	36,953		$	44,018			$	17,115			$	47,712			$	212,021			$	11,308			$	223,329
	(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 Type and Delinquency Status	'
	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
						Past Due			More Past Due
	December 31, 2013
	Commercial		$	69,587		$	257		$	55			$	134			$	70,033
	Commercial real estate			39,459			94			29				303				39,885
	Residential mortgages (a)			49,695			358			333				770				51,156
	Credit card			17,507			226			210				78				18,021
	Other retail			47,156			245			86				191				47,678
	Total loans, excluding covered loans			223,404			1,180			713				1,476				226,773
	Covered loans			7,693			166			476				127				8,462
	Total loans		$	231,097		$	1,346		$	1,189			$	1,603			$	235,235
	December 31, 2012
	Commercial		$	65,701		$	341		$	58			$	123			$	66,223
	Commercial real estate			36,241			158			8				546				36,953
	Residential mortgages (a)			42,728			348			281				661				44,018
	Credit card			16,525			227			217				146				17,115
	Other retail			47,109			290			96				217				47,712
	Total loans, excluding covered loans			208,304			1,364			660				1,693				212,021
	Covered loans			9,900			359			663				386				11,308
	Total loans		$	218,204		$	1,723		$	1,323			$	2,079			$	223,329
	(a)	At December 31, 2013, $440 million of loans 30–89 days past due and $3.7 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 Department of Veterans Affairs, were classified as current, compared with $441 million and $3.2 billion at December 31, 2012, respectively.
Summary of Loans by Portfolio Type 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
						Mention							Criticized
	December 31, 2013
	Commercial		$	68,075		$	1,013		$	945			$	1,958			$	70,033
	Commercial real estate			38,113			616			1,156				1,772				39,885
	Residential mortgages (b)			50,152			5			999				1,004				51,156
	Credit card			17,733			–			288				288				18,021
	Other retail			47,313			27			338				365				47,678
	Total loans, excluding covered loans			221,386			1,661			3,726				5,387				226,773
	Covered loans			8,160			18			284				302				8,462
	Total loans		$	229,546		$	1,679		$	4,010			$	5,689			$	235,235
	Total outstanding commitments		$	470,046		$	2,939		$	4,812			$	7,751			$	477,797
	December 31, 2012
	Commercial		$	63,906		$	1,114		$	1,203			$	2,317			$	66,223
	Commercial real estate			34,096			621			2,236				2,857				36,953
	Residential mortgages (b)			42,897			18			1,103				1,121				44,018
	Credit card			16,752			–			363				363				17,115
	Other retail			47,294			36			382				418				47,712
	Total loans, excluding covered loans			204,945			1,789			5,287				7,076				212,021
	Covered loans			10,786			61			461				522				11,308
	Total loans		$	215,731		$	1,850		$	5,748			$	7,598			$	223,329
	Total outstanding commitments		$	442,047		$	3,231		$	6,563			$	9,794			$	451,841
	(a)	Classified rating on consumer loans primarily based on delinquency status.
	(b)	At December 31, 2013, $3.7 billion of GNMA loans 90 days or more past due and $2.6 billion of 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, compared with $3.2 billion and $2.4 billion at December 31, 2012, respectively.
Summary of Impaired 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			Unpaid			Valuation				Commitments
			Recorded			Principal			Allowance				to Lend
			Investment (a)			Balance							Additional
													Funds
	December 31, 2013
	Commercial		$	382		$	804		$	36			$	54
	Commercial real estate			693			1,322			51				40
	Residential mortgages			2,767			3,492			308				–
	Credit card			310			310			87				–
	Other retail			391			593			59				14
	Total impaired loans, excluding GNMA and covered loans			4,543			6,521			541				108
	Loans purchased from GNMA mortgage pools			2,607			2,607			28				–
	Covered loans			452			1,008			30				4
	Total		$	7,602		$	10,136		$	599			$	112
	December 31, 2012
	Commercial		$	404		$	1,200		$	40			$	39
	Commercial real estate			1,077			2,251			70				4
	Residential mortgages			2,748			3,341			415				–
	Credit card			442			442			153				–
	Other retail			443			486			101				3
	Total impaired loans, excluding GNMA and covered loans			5,114			7,720			779				46
	Loans purchased from GNMA mortgage pools			1,778			1,778			39				–
	Covered loans			767			1,584			20				12
	Total		$	7,659		$	11,082		$	838			$	58
	(a)	Substantially all loans classified as impaired at December 31, 2013 and 2012, had an associated allowance for credit losses. The total amount of interest income recognized during 2013 on loans classified as impaired at December 31, 2013, excluding those acquired with deteriorated credit quality, was $233 million, compared to what would have been recognized at the original contractual terms of the loans of $399 million.
Impaired Loans Average Recorded Investment and Interest Income	'
	Additional information on impaired loans for the years ended December 31 follows:
	(Dollars in Millions)		Average			Interest
			Recorded			Income
			Investment			Recognized
	2013
	Commercial		$	382		$	29
	Commercial real estate			889			39
	Residential mortgages			2,749			134
	Credit card			366			16
	Other retail			424			24
	Total impaired loans, excluding GNMA and covered loans			4,810			242
	Loans purchased from GNMA mortgage pools			1,967			100
	Covered loans			561			27
	Total		$	7,338		$	369
	2012
	Commercial		$	470		$	18
	Commercial real estate			1,314			43
	Residential mortgages			2,717			130
	Credit card			510			28
	Other retail			301			19
	Total impaired loans, excluding GNMA and covered loans			5,312			238
	Loans purchased from GNMA mortgage pools			1,448			73
	Covered loans			980			29
	Total		$	7,740		$	340
	2011
	Commercial		$	534		$	12
	Commercial real estate			1,537			18
	Residential mortgages			2,557			100
	Credit card			485			15
	Other retail			164			5
	Total impaired loans, excluding GNMA and covered loans			5,277			150
	Loans purchased from GNMA mortgage pools			710			25
	Covered loans			780			11
	Total		$	6,767		$	186
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			Post-Modification
			of Loans			Outstanding			Outstanding
						Loan			Loan
						Balance			Balance
	2013
	Commercial			2,429		$	166		$	155
	Commercial real estate			165			205			198
	Residential mortgages			2,179			309			304
	Credit card			26,669			160			161
	Other retail			4,290			103			102
	Total loans, excluding GNMA and covered loans			35,732			943			920
	Loans purchased from GNMA mortgage pools			8,878			1,121			1,066
	Covered loans			123			94			72
	Total loans			44,733		$	2,158		$	2,058
	2012
	Commercial			4,843		$	307		$	272
	Commercial real estate			312			493			461
	Residential mortgages			4,616			638			623
	Credit card			49,320			241			255
	Other retail			10,461			279			275
	Total loans, excluding GNMA and covered loans			69,552			1,958			1,886
	Loans purchased from GNMA mortgage pools			9,518			1,280			1,245
	Covered loans			192			277			263
	Total loans			79,262		$	3,515		$	3,394
	2011
	Commercial			5,285		$	456		$	427
	Commercial real estate			506			1,078			1,060
	Residential mortgages			3,611			708			704
	Credit card			55,951			322			321
	Other retail			4,028			73			72
	Total loans, excluding GNMA and covered loans			69,381			2,637			2,584
	Loans purchased from GNMA mortgage pools			9,569			1,277			1,356
	Covered loans			283			604			575
	Total loans			79,233		$	4,518		$	4,515
Schedule of Loans Modified as TDRs that have Subsequently been Fully or Partially Charged-Off or Became 90 Days or More Past Due	'
	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
			of Loans			Defaulted
	2013
	Commercial			642		$	46
	Commercial real estate			87			102
	Residential mortgages			1,099			163
	Credit card			6,640			37
	Other retail			1,841			80
	Total loans, excluding GNMA and covered loans			10,309			428
	Loans purchased from GNMA mortgage pools			4,972			640
	Covered loans			63			49
	Total loans			15,344		$	1,117
	2012
	Commercial			859		$	48
	Commercial real estate			111			232
	Residential mortgages			1,073			146
	Credit card			9,774			54
	Other retail			1,818			56
	Total loans, excluding GNMA and covered loans			13,635			536
	Loans purchased from GNMA mortgage pools			1,245			177
	Covered loans			68			97
	Total loans			14,948		$	810
	2011
	Commercial			665		$	26
	Commercial real estate			64			67
	Residential mortgages			623			127
	Credit card			7,108			36
	Other retail			557			13
	Total loans, excluding GNMA and covered loans			9,017			269
	Loans purchased from GNMA mortgage pools			857			124
	Covered loans			11			26
	Total loans			9,885		$	419
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:
			2013																2012
	(Dollars in Millions)		Purchased			Purchased			Other				Total						Purchased				Purchased				Other				Total
			Impaired			Nonimpaired			Assets										Impaired				Nonimpaired				Assets
			Loans			Loans													Loans				Loans
	Commercial loans		$	–		$	32		$	–			$	32					$	–			$	143			$	–			$	143
	Commercial real estate loans			738			1,494			–				2,232						1,323				2,695				–				4,018
	Residential mortgage loans			3,037			890			–				3,927						3,978				1,109				–				5,087
	Credit card loans			–			5			–				5						–				5				–				5
	Other retail loans			–			666			–				666						–				775				–				775
	Losses reimbursable by the FDIC (a)			–			–			798				798						–				–				1,280				1,280
	Unamortized changes in FDIC asset (b)			–			–			802				802						–				–				–				–
	Covered loans			3,775			3,087			1,600				8,462						5,301				4,727				1,280				11,308
	Foreclosed real estate			–			–			97				97						–				–				197				197
	Total covered assets		$	3,775		$	3,087		$	1,697			$	8,559					$	5,301			$	4,727			$	1,477			$	11,505
	(a)	Relates to loss sharing agreements with remaining terms up to six 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. These amounts were presented within the separate loan categories prior to January 1, 2013.
Commercial Loans by Industry Group and Geography Excluding Covered Loans	'
	Commercial Loans by Industry Group and Geography
			2013								2012
	At December 31 (Dollars in Millions)		Loans			Percent					Loans				Percent
	Industry Group
	Manufacturing		$	10,738			15.3	%			$	9,518				14.4	%
	Real estate, rental and leasing			6,788			9.7					5,855				8.8
	Wholesale trade			6,346			9.1					6,297				9.5
	Finance and insurance			5,864			8.4					6,579				9.9
	Retail trade			5,401			7.7					4,735				7.2
	Healthcare and social assistance			5,048			7.2					4,733				7.1
	Public administration			3,934			5.6					4,709				7.1
	Professional, scientific and technical services			2,747			3.9					2,185				3.3
	Information			2,443			3.5					2,203				3.3
	Transport and storage			2,322			3.3					2,549				3.9
	Educational services			2,222			3.2					1,964				3
	Arts, entertainment and recreation			2,214			3.2					2,124				3.2
	Mining			2,094			3					2,122				3.2
	Agriculture, forestry, fishing and hunting			1,508			2.1					1,553				2.4
	Other services			1,507			2.1					1,670				2.5
	Utilities			1,374			2					1,390				2.1
	Other			7,483			10.7					6,037				9.1
	Total		$	70,033			100	%			$	66,223				100	%
	Geography
	California		$	8,748			12.5	%			$	8,081				12.2	%
	Colorado			2,970			4.2					2,722				4.1
	Illinois			3,539			5.1					3,544				5.3
	Minnesota			5,086			7.3					4,720				7.1
	Missouri			2,893			4.1					2,922				4.4
	Ohio			3,385			4.8					3,240				4.9
	Oregon			1,941			2.8					1,792				2.7
	Washington			2,823			4					2,626				4
	Wisconsin			2,768			4					2,727				4.1
	Iowa, Kansas, Nebraska, North Dakota, South Dakota			4,091			5.8					4,244				6.4
	Arkansas, Indiana, Kentucky, Tennessee			4,024			5.8					3,545				5.4
	Idaho, Montana, Wyoming			1,148			1.6					1,096				1.7
	Arizona, Nevada, New Mexico, Utah			2,917			4.2					2,435				3.7
	Total banking region			46,333			66.2					43,694				66
	Florida, Michigan, New York, Pennsylvania, Texas			11,762			16.8					11,082				16.7
	All other states			11,938			17					11,447				17.3
	Total outside Company’s banking region			23,700			33.8					22,529				34
	Total		$	70,033			100	%			$	66,223				100	%
Commercial Real Estate by Property Type and Geography Excluding Covered Loans	'
	Commercial Real Estate Loans by Property Type and Geography
			2013								2012
	At December 31 (Dollars in Millions)		Loans			Percent					Loans				Percent
	Property Type
	Business owner occupied		$	11,223			28.1	%			$	11,405				30.9	%
	Commercial property
	Industrial			1,567			3.9					1,586				4.3
	Office			5,173			13					4,833				13.1
	Retail			4,503			11.3					4,537				12.3
	Other commercial			4,253			10.7					3,735				10.1
	Multi-family			7,886			19.8					6,857				18.5
	Hotel/motel			3,251			8.1					2,569				6.9
	Residential homebuilders			1,728			4.3					1,142				3.1
	Health care facilities			301			0.8					289				0.8
	Total		$	39,885			100	%			$	36,953				100	%
	Geography
	California		$	9,148			22.9	%			$	8,039				21.8	%
	Colorado			1,781			4.5					1,644				4.5
	Illinois			1,586			4					1,555				4.2
	Minnesota			2,052			5.2					1,958				5.3
	Missouri			1,573			3.9					1,560				4.2
	Ohio			1,491			3.7					1,512				4.1
	Oregon			1,999			5					1,921				5.2
	Washington			3,548			8.9					3,586				9.7
	Wisconsin			2,410			6					2,011				5.4
	Iowa, Kansas, Nebraska, North Dakota, South Dakota			2,237			5.6					2,349				6.4
	Arkansas, Indiana, Kentucky, Tennessee			1,718			4.3					1,886				5.1
	Idaho, Montana, Wyoming			1,265			3.2					1,156				3.1
	Arizona, Nevada, New Mexico, Utah			3,214			8.1					2,958				8
	Total banking region			34,022			85.3					32,135				87
	Florida, Michigan, New York, Pennsylvania, Texas			3,178			8					2,405				6.5
	All other states			2,685			6.7					2,413				6.5
	Total outside Company’s banking region			5,863			14.7					4,818				13
	Total		$	39,885			100	%			$	36,953				100	%
Summary of Nonperforming Assets	'
	Nonperforming Assets (a)
	At December 31 (Dollars in Millions)		2013			2012			2011				2010				2009
	Commercial
	Commercial		$	122		$	107		$	280			$	519			$	866
	Lease financing			12			16			32				78				125
	Total commercial			134			123			312				597				991
	Commercial Real Estate
	Commercial mortgages			182			308			354				545				581
	Construction and development			121			238			545				748				1,192
	Total commercial real estate			303			546			899				1,293				1,773
	Residential Mortgages (b)			770			661			650				636				467
	Credit Card			78			146			224				228				142
	Other Retail
	Retail leasing			1			1			–				–				–
	Other			190			216			67				65				62
	Total other retail			191			217			67				65				62
	Total nonperforming loans, excluding covered loans			1,476			1,693			2,152				2,819				3,435
	Covered Loans			127			386			926				1,244				1,350
	Total nonperforming loans			1,603			2,079			3,078				4,063				4,785
	Other Real Estate (c)(d)			327			381			404				511				437
	Covered Other Real Estate (d)			97			197			274				453				653
	Other Assets			10			14			18				21				32
	Total nonperforming assets		$	2,037		$	2,671		$	3,774			$	5,048			$	5,907
	Total nonperforming assets, excluding covered assets		$	1,813		$	2,088		$	2,574			$	3,351			$	3,904
	Excluding covered assets
	Accruing loans 90 days or more past due (b)		$	713		$	660		$	843			$	1,094			$	1,525
	Nonperforming loans to total loans			0.65	%		0.8	%		1.1	%			1.57	%			1.99	%
	Nonperforming assets to total loans plus other real estate (c)			0.8	%		0.98	%		1.32	%			1.87	%			2.25	%
	Including covered assets
	Accruing loans 90 days or more past due (b)		$	1,189		$	1,323		$	1,753			$	2,184			$	2,309
	Nonperforming loans to total loans			0.68	%		0.93	%		1.47	%			2.06	%			2.46	%
	Nonperforming assets to total loans plus other real estate (c)			0.86	%		1.19	%		1.79	%			2.55	%			3.02	%
	Changes in Nonperforming Assets
	(Dollars in Millions)		Commercial and			Credit Card,			Covered				Total
			Commercial			Other Retail			Assets
			Real Estate			and Residential
						Mortgages
	Balance December 31, 2012		$	780		$	1,308		$	583			$	2,671
	Additions to nonperforming assets
	New nonaccrual loans and foreclosed properties			427			977			146				1,550
	Advances on loans			46			–			–				46
	Total additions			473			977			146				1,596
	Reductions in nonperforming assets
	Paydowns, payoffs			(266	)		(276	)		(247	)			(789	)
	Net sales			(209	)		(151	)		(249	)			(609	)
	Return to performing status			(38	)		(166	)		(8	)			(212	)
	Charge-offs (e)			(246	)		(373	)		(1	)			(620	)
	Total reductions			(759	)		(966	)		(505	)			(2,230	)
	Net additions to (reductions in) nonperforming assets			(286	)		11			(359	)			(634	)
	Balance December 31, 2013		$	494		$	1,319		$	224			$	2,037
	(a)	Throughout this document, nonperforming assets and related ratios do not include accruing loans 90 days or more past due.
	(b)	Excludes $3.7 billion, $3.2 billion, $2.6 billion, $2.6 billion and $2.2 billion at December 31, 2013, 2012, 2011, 2010 and 2009, 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 Department of Veterans Affairs.
	(c)	Foreclosed GNMA loans of $527 million, $548 million, $692 million, $575 million and $359 million at December 31, 2013, 2012, 2011, 2010 and 2009, 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 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, 2013
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)		2013			2012
	Aggregate future minimum lease payments to be received		$	11,074		$	10,738
	Unguaranteed residual values accruing to the lessor’s benefit			783			890
	Unearned income			(1,045	)		(1,123	)
	Initial direct costs			189			175
	Total net investment in sales-type and direct financing leases (a)		$	11,001		$	10,680
	(a)	The accumulated allowance for uncollectible minimum lease payments was $68 million and $80 million at December 31, 2013 and 2012, 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, 2013:
	(Dollars in Millions)
	2014		$	3,891
	2015			3,240
	2016			2,518
	2017			826
	2018			275
	Thereafter			324

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Premises and Equipment	'
	Premises and equipment at December 31 consisted of the following:
	(Dollars in Millions)	2013			2012
	Land	$	529		$	534
	Buildings and improvements		3,256			3,222
	Furniture, fixtures and equipment		2,593			2,543
	Capitalized building and equipment leases		103			97
	Construction in progress		24			42
			6,505			6,438
	Less accumulated depreciation and amortization		(3,899	)		(3,768	)
	Total	$	2,606		$	2,670

Mortgage_Servicing_Rights_Tabl

Mortgage Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2013
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)		2013			2012			2011
	Balance at beginning of period		$	1,700		$	1,519		$	1,837
	Rights purchased			8			42			35
	Rights capitalized			769			957			619
	Changes in fair value of MSRs
	Due to fluctuations in market interest rates (a)			617			(249	)		(619	)
	Due to revised assumptions or models (b)			33			(21	)		33
	Other changes in fair value (c)			(447	)		(548	)		(386	)
	Balance at end of period		$	2,680		$	1,700		$	1,519
	(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 discount rate, as well as the impact of any model changes.
	(c)	Primarily represents changes due to realization of expected cash flows over time (decay).
Sensitivity to Changes in Interest Rates to Fair Value of MSR's 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:
			2013																					2012
	(Dollars in Millions)		Down			Down			Down			Up			Up				Up					Down			Down			Down			Up			Up			Up
			100 bps			50 bps			25 bps			25 bps			50 bps				100 bps					100 bps			50 bps			25 bps			25 bps			50 bps			100 bps
	MSR portfolio		$	(435	)	$	(199	)	$	(93	)	$	82		$	154			$	287				$	(370	)	$	(217	)	$	(118	)	$	126		$	249		$	480
	Derivative instrument hedges			399			194			91			(82	)		(157	)			(301	)				473			249			124			(121	)		(243	)		(486	)
	Net sensitivity		$	(36	)	$	(5	)	$	(2	)	$	–		$	(3	)		$	(14	)			$	103		$	32		$	6		$	5		$	6		$	(6	)
MSRs and Related Characteristics by Portfolio	'
	A summary of the Company’s MSRs and related characteristics by portfolio as of December 31 follows:
			2013														2012
	(Dollars in Millions)		MRBP			Government			Conventional (b)			Total					MRBP				Government			Conventional (b)			Total
	Servicing portfolio		$	15,896		$	41,659		$	169,287		$	226,842				$	14,143			$	39,048		$	162,446		$	215,637
	Fair value		$	180		$	500		$	2,000		$	2,680				$	154			$	314		$	1,232		$	1,700
	Value (bps) (a)			113			120			118			118					109				80			76			79
	Weighted-average servicing fees (bps)			39			32			29			30					40				33			30			31
	Multiple (value/servicing fees)			2.9			3.75			4.07			3.93					2.73				2.42			2.53			2.55
	Weighted-average note rate			4.7	%		4.24	%		4.17	%		4.22	%				5.13	%			4.57	%		4.48	%		4.54	%
	Weighted-average age (in years)			3.8			2.6			2.5			2.6					4.2				2.4			2.5			2.6
	Weighted-average expected prepayment (constant prepayment rate)			13.5	%		11.5	%		10.9	%		11.2	%				13.2	%			21.2	%		20.4	%		20.1	%
	Weighted-average expected life (in years)			6.2			6.9			7.2			7.1					6.1				4.2			4.1			4.2
	Weighted-average discount rate			11.9	%		11.2	%		9.8	%		10.2	%				12.1	%			11.4	%		10	%		10.4	%
	(a)	Value is calculated as fair value divided by the servicing portfolio.
	(b)	Represents loans sold primarily to GSEs.

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Intangible Assets	'
	Intangible assets consisted of the following:
			Estimated		Amortization					Balance
	At December 31 (Dollars in Millions)		Life (a)		Method (b)					2013				2012
	Goodwill					(c	)			$	9,205			$	9,143
	Merchant processing contracts			10 years/8 years		SL/AC					229				281
	Core deposit benefits			22 years/5 years		SL/AC					135				176
	Mortgage servicing rights					(c	)				2,680				1,700
	Trust relationships			14 years/6 years		SL/AC					122				149
	Other identified intangibles			9 years/5 years		SL/AC					363				400
	Total									$	12,734			$	11,849
	(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 =traight line method
			AC=ccelerated 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)		2013		2012			2011
	Merchant processing contracts		$	64	$	74		$	90
	Core deposit benefits			41		60			81
	Trust relationships			34		39			35
	Other identified intangibles			84		101			93
	Total		$	223	$	274		$	299
Estimated Amortization Expense	'
	The estimated amortization expense for the next five years is as follows:
	(Dollars in Millions)
	2014		$	184
	2015			148
	2016			119
	2017			98
	2018			78
Changes in Carrying Value of Goodwill	'
	The following table reflects the changes in the carrying value of goodwill for the years ended December 31, 2013, 2012 and 2011:
	(Dollars in Millions)		Wholesale Banking and		Consumer and Small			Wealth Management and				Payment				Treasury and		Consolidated
			Commercial Real Estate		Business Banking			Securities Services				Services				Corporate Support		Company
	Balance at December 31, 2010		$	1,605	$	3,535		$	1,463			$	2,351			$	–	$	8,954
	Other (a)			–		(21	)		–				(6	)			–		(27	)
	Balance at December 31, 2011		$	1,605	$	3,514		$	1,463			$	2,345			$	–	$	8,927
	Goodwill acquired			–		–			65				143				–		208
	Other (a)			–		–			–				8				–		8
	Balance at December 31, 2012		$	1,605	$	3,514		$	1,528			$	2,496			$	–	$	9,143
	Goodwill acquired			–		–			37				20				–		57
	Other (a)			–		–			–				5				–		5
	Balance at December 31, 2013		$	1,605	$	3,514		$	1,565			$	2,521			$	–	$	9,205
	(a)	Other changes in goodwill include a reclassification from goodwill to covered loans related to an FDIC-assisted acquisition for Consumer and Small Business Banking and the effect of foreign exchange translation for Payment Services.

ShortTerm_Borrowings_a_Tables

Short-Term Borrowings (a) (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Summary of Short-Term Borrowings	'
	The following table is a summary of short-term borrowings for the last three years:
			2013					2012					2011
	(Dollars in Millions)		Amount		Rate			Amount		Rate			Amount		Rate
	At year-end
	Federal funds purchased		$	594		0.11	%	$	950		0.11	%	$	1,036		0.11	%
	Securities sold under agreements to repurchase			2,057		5.34			3,388		3.26			6,986		3.35
	Commercial paper			19,400		0.11			16,202		0.12			15,973		0.12
	Other short-term borrowings			5,557		0.19			5,762		0.29			6,473		0.26
	Total		$	27,608		0.52	%	$	26,302		0.57	%	$	30,468		0.89	%
	Average for the year
	Federal funds purchased (b)		$	1,879		9.72	%	$	1,338		15.32	%	$	968		22.61	%
	Securities sold under agreements to repurchase			2,403		4.65			4,942		3.52			7,483		3.22
	Commercial paper			17,467		0.12			15,806		0.14			15,204		0.15
	Other short-term borrowings			5,934		0.72			6,463		0.72			7,048		0.77
	Total (b)		$	27,683		1.29	%	$	28,549		1.57	%	$	30,703		1.75	%
	Maximum month-end balance
	Federal funds purchased		$	3,569				$	2,467				$	1,172
	Securities sold under agreements to repurchase			3,121					5,922					9,071
	Commercial paper			19,400					17,385					16,768
	Other short-term borrowings			6,301					7,443					7,514
	(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 2013, 2012 and 2011 was $181 million, $203 million and $218 million, respectively.

LongTerm_Debt_Tables

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2013
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		2013		2012
	U.S. Bancorp (Parent Company)
	Subordinated notes			Fixed		2.95	%		2022	$	1,300	$	1,300
				Fixed		7.5	%		2026		199		199
	Medium-term notes			Fixed		1.650% - 4.200	%		2014 - 2022		8,750		10,600
				Floating		0.728	%		2018		500		–
	Junior subordinated debentures			Fixed		3.442	%		2016		500		500
	Capitalized lease obligations, mortgage indebtedness and other (b)										167		173
	Subtotal										11,416		12,772
	Subsidiaries
	Subordinated notes			Fixed		6.3	%		2014		963		963
				Fixed		4.95	%		2014		1,000		1,000
				Fixed		4.8	%		2015		500		500
				Fixed		3.778	%		2020		500		500
				Floating		0.524	%		2014		373		373
	Federal Home Loan Bank advances			Fixed		1.250% - 8.250	%		2014 - 2026		13		16
				Floating		.238% - .505	%		2014 - 2022		4,579		4,579
	Bank notes			Floating		–	%		2046 - 2048		142		143
	Capitalized lease obligations, mortgage indebtedness and other (b)										563		4,670
	Subtotal										8,633		12,744
	Total									$	20,049	$	25,516
	(a)	Weighted-average interest rates of Federal Home Loan Bank advances and fixed-rate medium-term notes were .28 percent and 2.78 percent, respectively.
	(b)	Other includes consolidated community development and tax-advantaged investment VIEs, 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, 2013, were:
	(Dollars in Millions)		Parent		Consolidated
			Company
	2014		$	1,499	$	4,132
	2015			1,749		3,013
	2016			1,940		3,813
	2017			1,247		2,545
	2018			1,496		1,534
	Thereafter			3,485		5,012
	Total		$	11,416	$	20,049

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
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:
			2013														2012
	At December 31,		Shares			Liquidation			Discount			Carrying					Shares				Liquidation		Discount		Carrying
	(Dollars in Millions)		Issued and			Preference						Amount					Issued and				Preference				Amount
			Outstanding														Outstanding
	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 D			–			–			–			–					20,000				500		–		500
	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					–				–		–		–
	Total preferred stock (a)			159,910		$	4,936		$	180		$	4,756					159,910			$	4,936	$	167	$	4,769
	(a)	The par value of all shares issued and outstanding at December 31, 2013 and 2012, 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
	2013			65		$	2,336
	2012			59			1,878
	2011			22			550
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
			(Losses) on			(Losses) on			(Losses) on			(Losses) on			Translation
			Securities			Securities			Derivative Hedges			Retirement Plans
			Available-For-Sale			Transferred From
						Available-For-Sale
						to Held-To-Maturity
	2013
	Balance at beginning of period		$	679		$	107		$	(404	)	$	(1,265	)	$	(40	)		$	(923	)
	Changes in unrealized gains and losses			(1,223	)		–			37			590			–				(596	)
	Other-than-temporary impairment not recognized in earnings on securities available-for-sale			8			–			–			–			–				8
	Foreign currency translation adjustment			–			–			–			–			(34	)			(34	)
	Reclassification to earnings of realized gains and losses			(9	)		(59	)		192			249			–				373
	Applicable income taxes			468			22			(86	)		(317	)		14				101
	Balance at end of period		$	(77	)	$	70		$	(261	)	$	(743	)	$	(60	)		$	(1,071	)
	2012
	Balance at beginning of period		$	360		$	–		$	(489	)	$	(1,022	)	$	(49	)		$	(1,200	)
	Changes in unrealized gains and losses			715			–			(74	)		(543	)		–				98
	Other-than-temporary impairment not recognized in earnings on securities available-for-sale			12			–			–			–			–				12
	Transfer of securities from available-for-sale to held-to-maturity			(224	)		224			–			–			–				–
	Foreign currency translation adjustment			–			–			–			–			14				14
	Reclassification to earnings of realized gains and losses			15			(51	)		211			150			–				325
	Applicable income taxes			(199	)		(66	)		(52	)		150			(5	)			(172	)
	Balance at end of period		$	679		$	107		$	(404	)	$	(1,265	)	$	(40	)		$	(923	)
	2011
	Balance at beginning of period		$	(213	)	$	–		$	(414	)	$	(803	)	$	(39	)		$	(1,469	)
	Changes in unrealized gains and losses			920			–			(343	)		(464	)		–				113
	Other-than-temporary impairment not recognized in earnings on securities available-for-sale			(25	)		–			–			–			–				(25	)
	Foreign currency translation adjustment			–			–			–			–			(16	)			(16	)
	Reclassification to earnings of realized gains and losses			31			–			222			110			–				363
	Applicable income taxes			(353	)		–			46			135			6				(166	)
	Balance at end of period		$	360		$	–		$	(489	)	$	(1,022	)	$	(49	)		$	(1,200	)
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 and into earnings for the year ended December 31, 2013, is as follows:
	(Dollars in Millions)		Impact to			Affected Line Item in the
			Net Income			Consolidated Statement of Income
	Unrealized gains (losses) on securities available-for-sale
	Realized gains (losses) on sale of securities		$	23		Total securities gains (losses), net
	Other-than-temporary impairment recognized in earnings			(14	)
				9		Total before tax
				(4	)	Applicable income taxes
				5		Net-of-tax
	Unrealized gains (losses) on securities transferred from available-for-sale to held-to-maturity
	Amortization of unrealized gains			59		Interest income
				(22	)	Applicable income taxes
				37		Net-of-tax
	Unrealized gains (losses) on derivative hedges
	Realized gains (losses) on derivative hedges			(192	)	Net interest income
				74		Applicable income taxes
				(118	)	Net-of-tax
	Unrealized gains (losses) on retirement plans
	Actuarial gains (losses), prior service cost (credit) and transition obligation (asset) amortization			(249	)	Employee benefits expense
				96		Applicable income taxes
				(153	)	Net-of-tax
	Total impact to net income		$	(229	)
Components of Company's Regulatory Capital	'
	The following table provides the components of the Company’s regulatory capital at December 31:
	(Dollars in Millions)		2013			2012
	Tier 1 Capital
	Common shareholders’ equity		$	36,357		$	34,229
	Qualifying preferred stock			4,756			4,769
	Noncontrolling interests, less preferred stock not eligible for Tier 1 capital			688			685
	Less intangible assets
	Goodwill (net of deferred tax liability)			(8,343	)		(8,351	)
	Other disallowed intangible assets			(708	)		(829	)
	Other (a)			636			700
	Total Tier 1 Capital			33,386			31,203
	Tier 2 Capital
	Eligible portion of allowance for credit losses			3,734			3,609
	Eligible subordinated debt			2,299			2,953
	Other			(79	)		15
	Total Tier 2 Capital			5,954			6,577
	Total Risk Based Capital		$	39,340		$	37,780
	Risk-Weighted Assets		$	297,919		$	287,611
	(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.
Regulatory Capital Ratios	'
	At December 31 (Dollars in Millions)		2013			2012
	U.S. Bancorp
	Tier 1 capital		$	33,386		$	31,203
	As a percent of risk-weighted assets			11.2	%		10.8	%
	As a percent of adjusted quarterly average assets (leverage ratio)			9.6	%		9.2	%
	Total risk-based capital		$	39,340		$	37,780
	As a percent of risk-weighted assets			13.2	%		13.1	%
	Bank Subsidiary
	U.S. Bank National Association
	Tier 1 capital			10.3	%		10.6	%
	Total risk-based capital			12.4			12.7
	Leverage			8.8			9
	Bank Regulatory Capital Requirements		Minimum			Well-
						Capitalized
	Tier 1 capital			4	%		6	%
	Total risk-based capital			8			10
	Leverage			4			5

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Components of Earnings Per Share	'
	The components of earnings per share were:
	Year Ended December 31		2013			2012			2011
	(Dollars and Shares in Millions, Except Per Share Data)
	Net income attributable to U.S. Bancorp		$	5,836		$	5,647		$	4,872
	Preferred dividends			(250	)		(238	)		(129	)
	Impact of preferred stock redemption (a)			(8	)		–			–
	Earnings allocated to participating stock awards			(26	)		(26	)		(22	)
	Net income applicable to U.S. Bancorp common shareholders		$	5,552		$	5,383		$	4,721
	Average common shares outstanding			1,839			1,887			1,914
	Net effect of the exercise and assumed purchase of stock awards			10			9			9
	Average diluted common shares outstanding			1,849			1,896			1,923
	Earnings per common share		$	3.02		$	2.85		$	2.47
	Diluted earnings per common share		$	3		$	2.84		$	2.46
	(a)	Represents stock issuance costs originally recorded in capital surplus upon the issuance of the Company’s Series D Non-Cumulative Perpetual Preferred Stock that were reclassified to retained earnings on the redemption date.

Employee_Benefits_Tables

Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2013
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
												Welfare Plan
	(Dollars in Millions)		2013			2012						2013				2012
	Change In Projected Benefit Obligation
	Benefit obligation at beginning of measurement period		$	4,096		$	3,261					$	142			$	170
	Service cost			168			129						3				5
	Interest cost			170			168						4				7
	Participants’ contributions			–			–						10				10
	Plan amendments			–			–						(35	)			–
	Actuarial loss (gain)			(388	)		681						(2	)			(26	)
	Lump sum settlements			(34	)		(33	)					–				–
	Benefit payments			(117	)		(110	)					(24	)			(26	)
	Federal subsidy on benefits paid			–			–						2				2
	Benefit obligation at end of measurement period (a)		$	3,895		$	4,096					$	100			$	142
	Change In Fair Value Of Plan Assets
	Fair value at beginning of measurement period		$	2,321		$	2,103					$	105			$	120
	Actual return on plan assets			343			305						–				–
	Employer contributions			318			56						1				1
	Participants’ contributions			–			–						10				10
	Lump sum settlements			(34	)		(33	)					–				–
	Benefit payments			(117	)		(110	)					(24	)			(26	)
	Fair value at end of measurement period		$	2,831		$	2,321					$	92			$	105
	Funded (Unfunded) Status		$	(1,064	)	$	(1,775	)				$	(8	)		$	(37	)
	Components Of The Consolidated Balance Sheet
	Current benefit liability		$	(20	)	$	(23	)				$	–			$	–
	Noncurrent benefit liability			(1,044	)		(1,752	)					(8	)			(37	)
	Recognized amount		$	(1,064	)	$	(1,775	)				$	(8	)		$	(37	)
	Accumulated Other Comprehensive Income (Loss), Pretax
	Net actuarial gain (loss)		$	(1,333	)	$	(2,152	)				$	75			$	84
	Net prior service credit (cost)			16			21						34				–
	Recognized amount		$	(1,317	)	$	(2,131	)				$	109			$	84
	(a)	At December 31, 2013 and 2012, the accumulated benefit obligation for all pension plans was $3.6 billion and $3.8 billion, respectively.
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)		2013			2012
	Pension Plans with Projected Benefit Obligations in Excess of Plan Assets
	Projected benefit obligation		$	3,853		$	4,096
	Fair value of plan assets			2,787			2,321
	Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets
	Projected benefit obligation		$	3,853		$	4,096
	Accumulated benefit obligation			3,566			3,776
	Fair value of plan assets			2,787			2,321
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)		2013			2012				2011						2013			2012			2011
	Components Of Net Periodic Benefit Cost
	Service cost		$	168		$	129			$	119					$	3		$	5		$	4
	Interest cost			170			168				169						4			7			9
	Expected return on plan assets			(176	)		(191	)			(207	)					(2	)		(2	)		(5	)
	Prior service cost (credit) and transition obligation (asset) amortization			(5	)		(4	)			(9	)					(1	)		–			–
	Actuarial loss (gain) amortization			264			161				125						(9	)		(7	)		(6	)
	Net periodic benefit cost		$	421		$	263			$	197					$	(5	)	$	3		$	2
	Other Changes In Plan Assets And Benefit Obligations
	Recognized In Other Comprehensive Income (Loss)
	Net actuarial gain (loss) arising during the year		$	555		$	(567	)		$	(474	)				$	–		$	24		$	10
	Net actuarial loss (gain) amortized during the year			264			161				125						(9	)		(7	)		(6	)
	Net prior service credit (cost) arising during the year			–			–				–						35			–			–
	Net prior service cost (credit) and transition obligation (asset) amortized during the year			(5	)		(4	)			(9	)					(1	)		–			–
	Total recognized in other comprehensive income (loss)		$	814		$	(410	)		$	(358	)				$	25		$	17		$	4
	Total recognized in net periodic benefit cost and other comprehensive income (loss) (a)(b)		$	393		$	(673	)		$	(555	)				$	30		$	14		$	2
	(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 2014 are $158 million and $(5) 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 2014 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)		2013			2012						2013				2012
	Discount rate (a)			4.97	%		4.07	%					3.93	%			3.1	%
	Rate of compensation increase (b)			4.02			4.08						*				*
	Health care cost trend rate for the next year (c)												7.5	%			8	%
	Effect on accumulated postretirement benefit obligation
	One percent increase											$	5			$	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 plans, non-qualified pension plans and postretirement welfare plan of 14.6, 11.5, and 6.4 years, respectively, for 2013, and 15.9, 12.2 and 7.2 years, respectively, for 2012.
	(b)	Determined on an active liability weighted basis.
	(c)	The rate is assumed to decrease gradually to 5.0 percent by 2019 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)		2013			2012				2011						2013			2012			2011
	Discount rate (a)			4.07	%		5.07	%			5.66	%					3.1	%		4.3	%		4.9	%
	Expected return on plan assets (b)			7.5			8				8.25						1.5			2.25			3.5
	Rate of compensation increase (c)			4.08			4.05				4.02						*			*			*
	Health care cost trend rate (d)
	Prior to age 65																8	%		8	%		8	%
	After age 65																8			12			14
	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 plans, non-qualified pension plans and postretirement welfare plan of 15.9, 12.2 and 7.2 years, respectively, for 2013, and 14.8, 11.4 and 7.7 years, respectively, for 2012.
	(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 determined its 2013 expected long-term rates of return reflecting current economic conditions and plan assets. The decrease in the pension plans’ LTROR is primarily due to an increase in the debt securities target asset allocation from 10 percent as of December 31, 2011, to 30 percent as of December 31, 2013.
	(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 the plan investment assets measured at fair value at December 31:
			Pension Plans																								Postretirement
																											Welfare Plan
			2013													2012											2013			2012
	(Dollars in Millions)		Level 1			Level 2				Level 3						Level 1			Level 2			Level 3					Level 1			Level 1
	Cash and cash equivalents		$	62		$	–			$	–					$	119		$	–		$	–				$	92		$	105
	Debt securities			217			343				–						151			114			7					–			–
	Corporate stock
	Domestic equity securities			217			–				–						275			–			–					–			–
	Mid-small cap equity securities (a)			148			–				–						173			–			–					–			–
	International equity securities			229			–				–						285			–			–					–			–
	Real estate equity securities (b)			137			–				–						132			–			–					–			–
	Collective investment funds
	Domestic equity securities			–			538				–						–			400			–					–			–
	Mid-small cap equity securities (c)			–			58				–						–			59			–					–			–
	Emerging markets equity securities			–			58				–						–			61			–					–			–
	International equity securities			–			472				–						–			362			–					–			–
	Mutual funds
	Money market			–			–				–						–			7			–					–			–
	Debt securities			–			177				–						–			129			–					–			–
	Emerging markets equity securities			–			75				–						–			71			–					–			–
	Hedge funds (d)			–			–				103						–			–			–					–			–
	Other			–			(7	)			4						–			(7	)		3					–			–
	Total (e)		$	1,010		$	1,714			$	107					$	1,135		$	1,196		$	10				$	92		$	105
	(a)	At December 31, 2013 and 2012, securities included $141 million and $164 million in domestic equities, respectively and $7 million and $9 million in international equities, respectively.
	(b)	At December 31, 2013 and 2012, securities included $67 million and $66 million in domestic equities, respectively, and $70 million and $66 million in international equities, respectively.
	(c)	At December 31, 2013 and 2012, securities included $26 million and $24 million in domestic equities, respectively, $22 million and $16 million in international equities, respectively, and $10 million and $19 million in cash and cash equivalents, respectively.
	(d)	This category consists of several investment strategies diversified across several hedge fund managers.
	(e)	Total investment assets of the pension plans exclude obligations to return cash collateral to qualified borrowers of $20 million at December 31, 2012, under security lending arrangements.
Summarizes the Changes for all Plan Assets Measured at Fair Value Using Significant Unobservable Inputs (Level 3)	'
	The following table summarizes the changes in fair value for all plan investment assets measured at fair value using significant unobservable inputs (Level 3) for the years ended December 31:
			2013													2012								2011
	(Dollars in Millions)		Debt			Hedge				Other						Debt			Other					Debt			Other
			Securities			Funds										Securities								Securities
	Balance at beginning of period		$	7		$	–			$	3					$	7		$	6				$	8		$	6
	Unrealized gains (losses) relating to assets still held at end of year			–			–				–						1			(2	)				–			(9	)
	Purchases, sales, and settlements, net			(7	)		103				1						(1	)		(1	)				(1	)		9
	Balance at end of period		$	–		$	103			$	4					$	7		$	3				$	7		$	6
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						Medicare Part D
			Plans					Welfare Plan (a)						Subsidy Receipts
	2014		$	169				$	15					$	2
	2015			177					14						2
	2016			189					13						2
	2017			200					12						2
	2018			205					11						2
	2019 – 2023			1,205					44						8
	(a)	Net of expected retiree contributions and before Medicare Part D subsidy.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Summary of Stock Options Outstanding and Exercised Under Various Stock Options Plans	'
	The following is a summary of stock options outstanding and exercised under various stock option plans of the Company:
	Year Ended December 31		Stock			Weighted-			Weighted-Average				Aggregate
			Options/Shares			Average			Remaining Contractual				Intrinsic Value
						Exercise Price			Term				(in millions)
	2013
	Number outstanding at beginning of period			63,171,918		$	28.83
	Granted			1,168,011			33.99
	Exercised			(17,260,740	)		28.41
	Cancelled (a)			(354,424	)		29.22
	Number outstanding at end of period (b)			46,724,765		$	29.12			4.4			$	527
	Exercisable at end of period			39,556,000		$	29.19			3.8			$	444
	2012
	Number outstanding at beginning of period			75,823,941		$	27.6
	Granted			4,180,492			28.65
	Exercised			(15,681,323	)		23.12
	Cancelled (a)			(1,151,192	)		24.9
	Number outstanding at end of period (b)			63,171,918		$	28.83			4.9			$	196
	Exercisable at end of period			50,671,654		$	30.12			4.2			$	92
	2011
	Number outstanding at beginning of period			85,622,705		$	26.8
	Granted			4,063,369			28.66
	Exercised			(8,508,107	)		19.49
	Cancelled (a)			(5,354,026	)		28.44
	Number outstanding at end of period (b)			75,823,941		$	27.6			5.2			$	(42	)
	Exercisable at end of period			57,039,334		$	29.14			4.4			$	(120	)
	(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 and Assumptions Utilized by Company for Newly Issued Grants	'
	The following table includes the weighted average estimated fair value and assumptions utilized by the Company for newly issued grants:
	Year Ended December 31		2013			2012			2011
	Estimated fair value		$	12.13		$	10.19		$	10.55
	Risk-free interest rates			1	%		0.9	%		2.5	%
	Dividend yield			2.6	%		2.6	%		2.5	%
	Stock volatility factor			0.49			0.49			0.47
	Expected life of options (in years)			5.5			5.5			5.5
Summary of Certain Stock Option Activity of Company	'
	The following summarizes certain stock option activity of the Company:
	Year Ended December 31 (Dollars in Millions)		2013			2012			2011
	Fair value of options vested		$	41		$	49		$	54
	Intrinsic value of options exercised			144			143			61
	Cash received from options exercised			489			362			165
	Tax benefit realized from options exercised			56			75			23
Stock Options Outstanding Additional Information	'
	Additional information regarding stock options outstanding as of December 31, 2013, is as follows:
			Outstanding Options												Exercisable Options
	Range of Exercise Prices		Shares			Weighted-			Weighted-						Shares		Weighted-
						Average			Average								Average
						Remaining			Exercise								Exercise
						Contractual			Price								Price
						Life (Years)
	$11.02 – $15.00			4,661,087			5.1		$	11.39						4,661,087	$	11.4
	$15.01 – $20.00			167,391			2.4			19.54						167,391		19.54
	$20.01 – $25.00			3,390,179			6.2			23.85						2,216,001		23.84
	$25.01 – $30.00			13,108,918			5.2			29.05						8,276,837		29.29
	$30.01 – $35.00			17,999,955			3.9			31.97						16,837,858		31.83
	$35.01 – $36.25			7,397,235			3.1			36.07						7,396,826		36.07
	Total			46,724,765			4.4		$	29.12						39,556,000	$	29.19
Summary of Status 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:
			2013								2012								2011
	Year Ended December 31		Shares			Weighted-					Shares				Weighted-				Shares			Weighted-
						Average Grant-									Average Grant-							Average Grant-
						Date Fair Value									Date Fair Value							Date Fair Value
	Nonvested Shares
	Outstanding at beginning of period			8,935,743		$	25.04					8,995,295			$	22.46				8,811,027		$	19.74
	Granted			3,717,635			33.88					3,085,077				28.7				3,136,086			28.2
	Vested			(3,744,411	)		22.17					(2,931,820	)			20.97				(2,552,979	)		20.15
	Cancelled			(255,108	)		29.18					(212,809	)			25.01				(398,839	)		22.2
	Outstanding at end of period			8,653,859		$	29.96					8,935,743			$	25.04				8,995,295		$	22.46

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Components of Income Tax Expense	'
	The components of income tax expense were:
	Year Ended December 31 (Dollars in Millions)		2013			2012			2011
	Federal
	Current		$	1,885		$	1,853		$	907
	Deferred			(83	)		45			689
	Federal income tax			1,802			1,898			1,596
	State
	Current			216			334			186
	Deferred			14			4			59
	State income tax			230			338			245
	Total income tax provision		$	2,032		$	2,236		$	1,841
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)		2013			2012			2011
	Tax at statutory rate		$	2,717		$	2,704		$	2,320
	State income tax, at statutory rates, net of federal tax benefit			150			220			159
	Tax effect of
	Tax credits, net of related expenses (a)			(648	)		(479	)		(458	)
	Tax-exempt income			(212	)		(219	)		(226	)
	Noncontrolling interests			37			55			29
	Other items			(12	)		(45	)		17
	Applicable income taxes		$	2,032		$	2,236		$	1,841
	(a)	Excludes tax credits of $473 million for the year ended December 31, 2013 which were recognized as a reduction to the related investment asset.
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)		2013			2012			2011
	Balance at beginning of period		$	302		$	479		$	532
	Additions for tax positions taken in prior years			44			73			24
	Additions for tax positions taken in the current year			–			5			2
	Exam resolutions			(56	)		(245	)		(70	)
	Statute expirations			(26	)		(10	)		(9	)
	Balance at end of period		$	264		$	302		$	479
Significant Components of 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)		2013			2012
	Deferred Tax Assets
	Allowance for credit losses		$	1,722		$	1,756
	Accrued expenses			485			476
	Pension and postretirement benefits			277			523
	Securities available-for-sale and financial instruments			172			–
	Stock compensation			165			183
	Federal, state and foreign net operating loss carryforwards			72			60
	Partnerships and other investment assets			646			395
	Other deferred tax assets, net			179			180
	Gross deferred tax assets			3,718			3,573
	Deferred Tax Liabilities
	Leasing activities			(2,872	)		(2,792	)
	Mortgage servicing rights			(835	)		(490	)
	Goodwill and other intangible assets			(666	)		(565	)
	Loans			(211	)		(168	)
	Fixed assets			(147	)		(201	)
	Securities available-for-sale and financial instruments			–			(232	)
	Other deferred tax liabilities, net			(210	)		(361	)
	Gross deferred tax liabilities			(4,941	)		(4,809	)
	Valuation allowance			(82	)		(84	)
	Net Deferred Tax Asset (Liability)		$	(1,305	)	$	(1,320	)

Derivative_Instruments_Tables

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
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					Notional			Fair			Weighted-Average
			Value			Value			Remaining					Value			Value			Remaining
									Maturity											Maturity
									In Years											In Years
	December 31, 2013
	Fair value hedges
	Interest rate contracts
	Receive fixed/pay floating swaps		$	500		$	22			2.09				$	–		$	–			–
	Cash flow hedges
	Interest rate contracts
	Pay fixed/receive floating swaps			772			26			6.25					4,288			498			2.46
	Receive fixed/pay floating swaps			7,000			26			0.84					–			–			–
	Net investment hedges
	Foreign exchange forward contracts			–			–			–					1,056			4			0.04
	Other economic hedges
	Interest rate contracts
	Futures and forwards
	Buy			2,310			9			0.07					1,025			7			0.06
	Sell			5,234			58			0.08					346			4			0.17
	Options
	Purchased			2,300			–			0.07					–			–			–
	Written			1,902			17			0.07					2			–			0.08
	Receive fixed/pay floating swaps			–			–			–					3,540			56			10.22
	Foreign exchange forward contracts			6,813			24			0.02					2,121			4			0.02
	Equity contracts			79			3			1.62					–			–			–
	Credit contracts			1,209			4			4.04					2,352			7			3.08
	Total		$	28,119		$	189							$	14,730		$	580
	December 31, 2012
	Fair value hedges
	Interest rate contracts
	Receive fixed/pay floating swaps		$	500		$	30			3.09				$	–		$	–			–
	Cash flow hedges
	Interest rate contracts
	Pay fixed/receive floating swaps			32			–			9.88					4,528			718			3.79
	Receive fixed/pay floating swaps			7,000			45			1.84					–			–			–
	Net investment hedges
	Foreign exchange forward contracts			758			1			0.07					–			–			–
	Other economic hedges
	Interest rate contracts
	Futures and forwards
	Buy			11,164			138			0.07					2,921			13			0.04
	Sell			6,299			18			0.11					12,223			57			0.09
	Options
	Purchased			2,435			–			0.07					–			–			–
	Written			4,991			123			0.12					4			–			0.06
	Receive fixed/pay floating swaps			350			1			10.21					3,775			14			10.21
	Foreign exchange forward contracts			618			4			0.03					1,383			6			0.01
	Equity contracts			31			–			2.8					27			–			2.46
	Credit contracts			1,056			3			4.56					1,947			10			3.11
	Total		$	35,234		$	363							$	26,808		$	818
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
			Value			Value			Remaining					Value			Value			Remaining
									Maturity											Maturity
									In Years											In Years
	December 31, 2013
	Interest rate contracts
	Receive fixed/pay floating swaps		$	11,717		$	600			5.11				$	7,291		$	106			5.57
	Pay fixed/receive floating swaps			6,746			114			6.03					12,361			560			4.9
	Options
	Purchased			3,489			33			4.53					–			–			–
	Written			–			–			–					3,489			33			4.53
	Foreign exchange rate contracts
	Forwards, spots and swaps			10,970			457			0.59					9,975			427			0.62
	Options
	Purchased			364			11			0.53					–			–			–
	Written			–			–			–					364			11			0.53
	Total		$	33,286		$	1,215							$	33,480		$	1,137
	December 31, 2012
	Interest rate contracts
	Receive fixed/pay floating swaps		$	16,671		$	1,085			4.78				$	1,090		$	15			9.3
	Pay fixed/receive floating swaps			928			14			11.12					16,923			1,042			4.74
	Options
	Purchased			3,046			16			5.24					28			–			4.42
	Written			286			–			0.75					2,788			16			5.68
	Foreign exchange rate contracts
	Forwards, spots and swaps			12,186			322			0.43					11,861			286			0.44
	Options
	Purchased			323			6			0.55					–			–			–
	Written			–			–			–					323			6			0.55
	Total		$	33,440		$	1,443							$	33,013		$	1,365
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
			Comprehensive Income (Loss)											Other Comprehensive Income (Loss)
														into Earnings
	(Dollars in Millions)		2013			2012			2011					2013			2012			2011
	Asset and Liability Management Positions
	Cash flow hedges
	Interest rate contracts (a)		$	25		$	(46	)	$	(213	)			$	(118	)	$	(131	)	$	(138	)
	Net investment hedges
	Foreign exchange forward contracts			(45	)		(19	)		34					–			–			–
	Non-derivative debt instruments			–			20			–					–			–			–
	Note:	Ineffectiveness on cash flow and net investment hedges was not material for the years ended December 31, 2013, 2012 and 2011.
	(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)			2013			2012			2011
			Recognized in Earnings
	Asset and Liability Management Positions
	Fair value hedges (a)
	Interest rate contracts			Other noninterest income		$	(9	)	$	3		$	(36	)
	Foreign exchange cross-currency swaps			Other noninterest income			–			42			(69	)
	Other economic hedges
	Interest rate contracts
	Futures and forwards			Mortgage banking revenue			615			437			23
	Purchased and written options			Mortgage banking revenue			243			854			456
	Receive fixed/pay floating swaps			Mortgage banking revenue			(322	)		175			518
	Pay fixed/received floating swaps			Mortgage banking revenue			–			–			1
	Foreign exchange forward contracts			Commercial products revenue			49			(63	)		(81	)
	Equity contracts			Compensation expense			2			2			1
	Credit contracts			Other noninterest income/expense			6			(8	)		–
	Customer-Related Positions
	Interest rate contracts
	Receive fixed/pay floating swaps			Other noninterest income			(361	)		(118	)		302
	Pay fixed/receive floating swaps			Other noninterest income			378			124			(317	)
	Foreign exchange rate contracts
	Forwards, spots and swaps			Commercial products revenue			51			50			53
	(a)	Gains (Losses) on items hedged by interest rate contracts and foreign exchange forward contracts, included in noninterest income (expense), were $8 million and zero for the year ended December 31, 2013, respectively, $(3) million and $(44) million for the year ended December 31, 2012, respectively, and $29 million and $72 million for the year ended December 31, 2011, respectively. The ineffective portion was immaterial for the years ended December 31, 2013, 2012 and 2011.

Netting_Arrangements_for_Certa1

Netting Arrangements for Certain Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet 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		Gross Amounts			Net Amounts		Gross Amounts Not Offset on the
					Offset on the			Presented on the		Consolidated Balance Sheet
	(Dollars in Millions)		Recognized		Consolidated			Consolidated		Financial			Collateral			Net Amount
			Assets		Balance Sheet (a)			Balance Sheet		Instruments (b)			Received (c)
	December 31, 2013
	Derivative assets (d)		$	1,349	$	(599	)	$	750	$	(21	)	$	–		$	729
	Reverse repurchase agreements			87		–			87		(59	)		(28	)		–
	Securities borrowed			723		–			723		–			(698	)		25
	Total		$	2,159	$	(599	)	$	1,560	$	(80	)	$	(726	)	$	754
	December 31, 2012
	Derivative assets (d)		$	1,546	$	(418	)	$	1,128	$	(148	)	$	–		$	980
	Reverse repurchase agreements			363		–			363		(44	)		(319	)		–
	Securities borrowed			368		–			368		–			(356	)		12
	Total		$	2,277	$	(418	)	$	1,859	$	(192	)	$	(675	)	$	992
	(a)	Includes $124 million and $79 million of cash collateral related payables that were netted against derivative assets at December 31, 2013 and 2012, 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 $55 million and $260 million of derivative assets centrally cleared or otherwise not subject to netting arrangements at December 31, 2013 and 2012, respectively.
			Gross		Gross Amounts			Net Amounts		Gross Amounts Not Offset on the
					Offset on the			Presented on the		Consolidated Balance Sheet
	(Dollars in Millions)		Recognized		Consolidated			Consolidated		Financial			Collateral			Net Amount
			Liabilities		Balance Sheet (a)			Balance Sheet		Instruments (b)			Pledged (c)
	December 31, 2013
	Derivative liabilities (d)		$	1,598	$	(1,192	)	$	406	$	(21	)	$	–		$	385
	Repurchase agreements			2,059		–			2,059		(59	)		(2,000	)		–
	Securities loaned			–		–			–		–			–			–
	Total		$	3,657	$	(1,192	)	$	2,465	$	(80	)	$	(2,000	)	$	385
	December 31, 2012
	Derivative liabilities (d)		$	2,178	$	(1,549	)	$	629	$	(148	)	$	–		$	481
	Repurchase agreements			3,389		–			3,389		(44	)		(3,345	)		–
	Securities loaned			–		–			–		–			–			–
	Total		$	5,567	$	(1,549	)	$	4,018	$	(192	)	$	(3,345	)	$	481
	(a)	Includes $717 million and $1.2 billion of cash collateral related receivables that were netted against derivative liabilities at December 31, 2013 and 2012, 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 $119 million and $5 million of derivative liabilities centrally cleared or otherwise not subject to netting arrangements at December 31, 2013 and 2012, respectively.

Fair_Values_of_Assets_and_Liab1

Fair Values of Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
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, 2013:
			Minimum			Maximum			Average
	Residential Prime Non-Agency Mortgage-Backed Securities (a)
	Estimated lifetime prepayment rates			6	%		20	%		13	%
	Lifetime probability of default rates			–			7			4
	Lifetime loss severity rates			25			65			42
	Discount margin			2			5			4
	Residential Non-Prime Non-Agency Mortgage-Backed Securities (b)
	Estimated lifetime prepayment rates			2	%		10	%		6	%
	Lifetime probability of default rates			4			12			8
	Lifetime loss severity rates			15			70			54
	Discount margin			1			6			3
	Other Asset-Backed Securities
	Estimated lifetime prepayment rates			6	%		6	%		6	%
	Lifetime probability of default rates			5			5			5
	Lifetime loss severity rates			40			40			40
	Discount margin			7			7			7
	(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, 2013:
			Minimum			Maximum			Average
	Expected prepayment			10	%		21	%		11	%
	Discount rate			10			13			10
Valuation Assumption Ranges for Derivative Commitments	'
	The following table shows the significant valuation assumption ranges for the Company’s derivative commitments to sell, purchase and originate mortgage loans at December 31, 2013:
			Minimum			Maximum			Average
	Expected loan close rate			43	%		100	%		80	%
	Inherent MSR value (basis points per loan)			48			221			124
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, 2013
	Available-for-sale securities
	U.S. Treasury and agencies		$	7		$	1,038		$	–		$	–		$	1,045
	Mortgage-backed securities
	Residential
	Agency			–			31,553			–			–			31,553
	Non-agency
	Prime (a)			–			–			478			–			478
	Non-prime (b)			–			–			297			–			297
	Commercial
	Agency			–			152			–			–			152
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			–			24			–			–			24
	Other			–			566			63			–			629
	Obligations of state and political subdivisions			–			5,738			–			–			5,738
	Obligations of foreign governments			–			6			–			–			6
	Corporate debt securities			–			631			9			–			640
	Perpetual preferred securities			–			212			–			–			212
	Other investments			141			20			–			–			161
	Total available-for-sale			148			39,940			847			–			40,935
	Mortgage loans held for sale			–			3,263			–			–			3,263
	Mortgage servicing rights			–			–			2,680			–			2,680
	Derivative assets			–			889			515			(599	)		805
	Other assets			143			588			–			–			731
	Total		$	291		$	44,680		$	4,042		$	(599	)	$	48,414
	Derivative liabilities		$	–		$	1,647		$	70		$	(1,192	)	$	525
	Short-term borrowings (c)			112			551			–			–			663
	Total		$	112		$	2,198		$	70		$	(1,192	)	$	1,188
	December 31, 2012
	Available-for-sale securities
	U.S. Treasury and agencies		$	491		$	735		$	–		$	–		$	1,226
	Mortgage-backed securities
	Residential
	Agency			–			29,495			–			–			29,495
	Non-agency
	Prime (a)			–			–			624			–			624
	Non-prime (b)			–			–			355			–			355
	Commercial
	Agency			–			193			–			–			193
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			–			42			–			–			42
	Other			–			577			15			–			592
	Obligations of state and political subdivisions			–			6,455			–			–			6,455
	Obligations of foreign governments			–			6			–			–			6
	Corporate debt securities			–			722			9			–			731
	Perpetual preferred securities			–			218			–			–			218
	Other investments			187			15			–			–			202
	Total available-for-sale			678			38,458			1,003			–			40,139
	Mortgage loans held for sale			–			7,957			–			–			7,957
	Mortgage servicing rights			–			–			1,700			–			1,700
	Derivative assets			–			572			1,234			(418	)		1,388
	Other assets			94			386			–			–			480
	Total		$	772		$	47,373		$	3,937		$	(418	)	$	51,664
	Derivative liabilities		$	–		$	2,128		$	55		$	(1,549	)	$	634
	Short-term borrowings (c)			50			351			–			–			401
	Total		$	50		$	2,479		$	55		$	(1,549	)	$	1,035
	(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)	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		Net Change in
			of Period			(Losses)			(Losses)									Payments									of Period		Unrealized Gains
			Balance			Included in			Included in																		Balance		(Losses) Relating
						Net Income			Other																				to Assets and
									Comprehensive																				Liabilities
									Income (Loss)																				Still Held at
																													End of Period
	2013
	Available-for-sale securities
	Mortgage-backed securities
	Residential non-agency
	Prime (a)		$	624		$	(6	)	$	8		$	–		$	–		$	(148	)	$	–		$	–		$	478	$	9
	Non-prime (b)			355			(13	)		17			–			(20	)		(42	)		–			–			297		17
	Asset-backed securities
	Other			15			3			1			51			–			(7	)		–			–			63		–
	Corporate debt securities			9			–			–			–			–			–			–			–			9		–
	Total available-for-sale			1,003			(16	)(c)		26	(f)		51			(20	)		(197	)		–			–			847		26
	Mortgage servicing rights			1,700			203	(d)		–			8			–			–			769	(g)		–			2,680		203	(d)
	Net derivative assets and liabilities			1,179			(18	)(e)		–			1			(5	)		–			–			(712	)		445		(321	)(h)
	2012
	Available-for-sale securities
	Mortgage-backed securities
	Residential non-agency
	Prime (a)		$	803		$	(10	)	$	91		$	–		$	(109	)	$	(151	)	$	–		$	–		$	624	$	65
	Non-prime (b)			802			(24	)		228			–			(562	)		(89	)		–			–			355		80
	Commercial non-agency			42			1			–			–			(38	)		(5	)		–			–			–		–
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			120			13			(8	)		–			(104	)		(21	)		–			–			–		–
	Other			117			7			–			3			(93	)		(19	)		–			–			15		2
	Corporate debt securities			9			–			–			–			–			–			–			–			9		–
	Total available-for-sale			1,893			(13	)(i)		311	(f)		3			(906	)		(285	)		–			–			1,003		147
	Mortgage servicing rights			1,519			(818	)(d)		–			42			–			–			957	(g)		–			1,700		(818	)(d)
	Net derivative assets and liabilities			1,228			2,398	(j)		–			3			(5	)		–			–			(2,445	)		1,179		150	(k)
	2011
	Available-for-sale securities
	Mortgage-backed securities
	Residential non-agency
	Prime (a)		$	1,103		$	6		$	4		$	–		$	(115	)	$	(195	)	$	–		$	–		$	803	$	(4	)
	Non-prime (b)			947			(7	)		1			–			(13	)		(126	)		–			–			802		1
	Commercial non-agency			50			3			(3	)		–			(4	)		(4	)		–			–			42		(2	)
	Asset-backed securities
	Collateralized debt obligations/Collateralized loan obligations			135			13			5			–			–			(33	)		–			–			120		5
	Other			133			10			(7	)		5			–			(24	)		–			–			117		(7	)
	Corporate debt securities			9			–			–			–			–			–			–			–			9		–
	Total available-for-sale			2,377			25	(l)		–	(f)		5			(132	)		(382	)		–			–			1,893		(7	)
	Mortgage servicing rights			1,837			(972	)(d)		–			35			–			–			619	(g)		–			1,519		(972	)(d)
	Net derivative assets and liabilities			851			1,550	(m)		–			1			(8	)		–			–			(1,166	)		1,228		442	(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 $(14) million included in securities gains (losses) and $(2) million included in interest income.
	(d)	Included in mortgage banking revenue.
	(e)	Approximately $(149) million included in other noninterest income and $131 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 $(340) million included in other noninterest income and $19 million included in mortgage banking revenue.
	(i)	Approximately $(47) million included in securities gains (losses) and $34 million included in interest income.
	(j)	Approximately $359 million included in other noninterest income and $2.0 billion included in mortgage banking revenue.
	(k)	Approximately $(109) million included in other noninterest income and $259 million included in mortgage banking revenue.
	(l)	Approximately $(31) million included in securities gains (losses) and $56 million included in interest income.
	(m)	Approximately $716 million included in other noninterest income and $834 million included in mortgage banking revenue.
	(n)	Approximately $262 million included in other noninterest income and $180 million included in mortgage banking revenue.
Adjusted Carrying Values for Assets Measured at Fair Value on Nonrecurring Basis	'
	The following table summarizes the balances of assets measured at fair value on a nonrecurring basis as of December 31:
			2013												2012
	(Dollars in Millions)		Level 1			Level 2			Level 3			Total			Level 1			Level 2			Level 3			Total
	Loans (a)		$	–		$	–		$	128		$	128		$	–		$	–		$	140		$	140
	Other assets (b)			–			–			150			150			–			–			194			194
	(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)		2013			2012			2011
	Loans (a)		$	83		$	68		$	177
	Other assets (b)			96			160			316
	(a)	Represents 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 and Aggregate Unpaid Principal Amount	'
	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:
			2013									2012
	(Dollars in Millions)		Fair Value			Aggregate			Carrying			Fair Value			Aggregate			Carrying
			Carrying			Unpaid			Amount Over			Carrying			Unpaid			Amount Over
			Amount			Principal			(Under) Unpaid			Amount			Principal			(Under) Unpaid
									Principal									Principal
	Total loans		$	3,263		$	3,195		$	68		$	7,957		$	7,588		$	369
	Nonaccrual loans			9			14			(5	)		8			13			(5	)
	Loans 90 days or more past due			–			–			–			2			3			(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:
			2013															2012
			Carrying			Fair Value												Carrying			Fair Value
	(Dollars in Millions)		Amount			Level 1			Level 2			Level 3			Total			Amount			Level 1			Level 2			Level 3		Total
	Financial Assets
	Cash and due from banks		$	8,477		$	8,477		$	–		$	–		$	8,477		$	8,252		$	8,252		$	–		$	–	$	8,252
	Federal funds sold and securities purchased under resale agreements			163			–			163			–			163			437			–			437			–		437
	Investment securities held-to-maturity			38,920			2,589			35,678			101			38,368			34,389			2,984			31,845			123		34,952
	Loans held for sale (a)			5			–			–			5			5			19			–			–			19		19
	Loans (b)			230,857			–			–			231,480			231,480			218,765			–			–			220,354		220,354
	Other financial instruments			2,422			–			1,080			1,362			2,442			7,367			–			1,228			6,157		7,385
	Financial Liabilities
	Deposits			262,123			–			262,200			–			262,200			249,183			–			249,594			–		249,594
	Short-term borrowings (c)			26,945			–			26,863			–			26,863			25,901			–			25,917			–		25,917
	Long-term debt			20,049			–			20,391			–			20,391			25,516			–			26,205			–		26,205
	(a)	Excludes mortgages held for sale for which the fair value option under applicable accounting guidance was elected.
	(b)	Excludes loans measured at fair value on a nonrecurring basis.
	(c)	Excludes the Company’s obligation on securities sold short required to be accounted for at fair value per applicable accounting guidance.

Guarantees_and_Contingent_Liab1

Guarantees and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Summary of Contract or Notional Amounts of Unfunded Commitments to Extend Credit	'
	The contract or notional amounts of unfunded commitments to extend credit at December 31, 2013, excluding those commitments considered derivatives, were as follows:
			Term
	(Dollars in Millions)		Less Than			Greater Than				Total
			One Year			One Year
	Commercial and commercial real estate		$	20,321		$	83,530			$	103,851
	Corporate and purchasing cards (a)			20,007			–				20,007
	Residential mortgages			98			11				109
	Retail credit cards (a)			71,192			264				71,456
	Other retail			11,382			17,733				29,115
	Covered			31			807				838
	Federal funds			4,898			–				4,898
	(a)	Primarily cancelable at the Company’s discretion.
Summary of Lease Commitments	'
	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, 2013:
	(Dollars in Millions)		Capitalized					Operating
			Leases					Leases
	2014		$	9				$	244
	2015			8					215
	2016			8					182
	2017			6					154
	2018			6					116
	Thereafter			25					474
	Total minimum lease payments			62				$	1,385
	Less amount representing interest			23
	Present value of net minimum lease payments		$	39
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, 2013:
	(Dollars in Millions)		Collateral			Carrying				Maximum
			Held			Amount				Potential
										Future
										Payments
	Standby letters of credit		$	–		$	71			$	16,891
	Third-party borrowing arrangements			–			–				12
	Securities lending indemnifications			5,397			–				5,261
	Asset sales			–			185				3,656
	Merchant processing			648			69				83,496
	Contingent consideration arrangements			–			12				12
	Tender option bond program guarantee			4,604			–				4,575
	Minimum revenue guarantees			–			12				12
	Other			–			–				468
Summary of Contract or Notional Amounts of Letters of Credit	'
	The contract or notional amount of letters of credit at December 31, 2013, were as follows:
			Term
	(Dollars in Millions)		Less Than			Greater				Total
			One Year			Than
						One Year
	Standby		$	7,778		$	9,113			$	16,891
	Commercial			252			43				295
Company's Representation and Warranty Reserve	'
	The following table is a rollforward of the Company’s representation and warranty reserve:
	Year Ended December 31		2013			2012				2011
	(Dollars in Millions)
	Balance at beginning of period		$	240		$	160			$	180
	Net realized losses			(115	)		(120	)			(137	)
	Change in reserve			(42	)		200				117
	Balance at end of period		$	83		$	240			$	160

US_Bancorp_Parent_Company_Tabl

U.S. Bancorp (Parent Company) (Tables)	12 Months Ended
	Dec. 31, 2013
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)	2013			2012
	Assets
	Due from banks, principally interest-bearing	$	8,371		$	3,630
	Available-for-sale securities		463			425
	Investments in bank subsidiaries		37,558			38,007
	Investments in nonbank subsidiaries		1,546			1,445
	Advances to bank subsidiaries		2,250			6,173
	Advances to nonbank subsidiaries		1,534			1,404
	Other assets		1,628			1,550
	Total assets	$	53,350		$	52,634
	Liabilities and Shareholders’ Equity
	Short-term funds borrowed	$	138		$	134
	Long-term debt		11,416			12,772
	Other liabilities		683			730
	Shareholders’ equity		41,113			38,998
	Total liabilities and shareholders’ equity	$	53,350		$	52,634
Condensed Income Statement of Parent Company Only	'
	Condensed Statement of Income
	Year Ended December 31 (Dollars in Millions)	2013			2012			2011
	Income
	Dividends from bank subsidiaries	$	6,100		$	250		$	1,500
	Dividends from nonbank subsidiaries		9			4			7
	Interest from subsidiaries		118			96			101
	Other income		66			149			134
	Total income		6,293			499			1,742
	Expense
	Interest expense		325			393			425
	Other expense		81			122			79
	Total expense		406			515			504
	Income (loss) before income taxes and equity in undistributed income of subsidiaries		5,887			(16	)		1,238
	Applicable income taxes		(88	)		(85	)		(83	)
	Income of parent company		5,975			69			1,321
	Equity in undistributed income (losses) of subsidiaries		(139	)		5,578			3,551
	Net income attributable to U.S. Bancorp	$	5,836		$	5,647		$	4,872
Condensed Statement of Cash Flows of Parent Company Only	'
	Condensed Statement of Cash Flows
	Year Ended December 31 (Dollars in Millions)	2013			2012			2011
	Operating Activities
	Net income attributable to U.S. Bancorp	$	5,836		$	5,647		$	4,872
	Adjustments to reconcile net income to net cash provided by operating activities
	Equity in undistributed (income) losses of subsidiaries		139			(5,578	)		(3,551	)
	Other, net		(40	)		(35	)		12
	Net cash provided by operating activities		5,935			34			1,333
	Investing Activities
	Proceeds from sales and maturities of investment securities		75			979			297
	Purchases of investment securities		(118	)		(35	)		(36	)
	Equity distributions from subsidiaries		12			845			77
	Net (increase) decrease in short-term advances to subsidiaries		4,543			207			(4,613	)
	Long-term advances to subsidiaries		(750	)		(500	)		–
	Other, net		(9	)		(22	)		(3	)
	Net cash provided by (used in) investing activities		3,753			1,474			(4,278	)
	Financing Activities
	Net increase (decrease) in short-term borrowings		4			105			(31	)
	Proceeds from issuance of long-term debt		1,500			3,550			2,426
	Principal payments or redemption of long-term debt		(2,850	)		(5,412	)		(851	)
	Proceeds from issuance of preferred stock		487			2,163			676
	Proceeds from issuance of common stock		524			395			180
	Redemption of preferred stock		(500	)		–			–
	Repurchase of common stock		(2,282	)		(1,856	)		(514	)
	Cash dividends paid on preferred stock		(254	)		(204	)		(118	)
	Cash dividends paid on common stock		(1,576	)		(1,347	)		(817	)
	Net cash provided by (used in) financing activities		(4,947	)		(2,606	)		951
	Change in cash and due from banks		4,741			(1,098	)		(1,994	)
	Cash and due from banks at beginning of year		3,630			4,728			6,722
	Cash and due from banks at end of year	$	8,371		$	3,630		$	4,728

Loans_and_Allowance_for_Credit2

Loans and Allowance for Credit Losses - Commercial Loans by Industry Group and Geography Excluding Covered Loans (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	$70,033	$66,223
Percentage of allocation for loans and leases receivable commercial	100.00%	100.00%
California [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	8,748	8,081
Percentage of allocation for loans and leases receivable commercial	12.50%	12.20%
Colorado [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,970	2,722
Percentage of allocation for loans and leases receivable commercial	4.20%	4.10%
Illinois [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	3,539	3,544
Percentage of allocation for loans and leases receivable commercial	5.10%	5.30%
Minnesota [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	5,086	4,720
Percentage of allocation for loans and leases receivable commercial	7.30%	7.10%
Missouri [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,893	2,922
Percentage of allocation for loans and leases receivable commercial	4.10%	4.40%
Ohio [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	3,385	3,240
Percentage of allocation for loans and leases receivable commercial	4.80%	4.90%
Oregon [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	1,941	1,792
Percentage of allocation for loans and leases receivable commercial	2.80%	2.70%
Washington [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,823	2,626
Percentage of allocation for loans and leases receivable commercial	4.00%	4.00%
Wisconsin [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,768	2,727
Percentage of allocation for loans and leases receivable commercial	4.00%	4.10%
Iowa, Kansas, Nebraska, North Dakota, South Dakota [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	4,091	4,244
Percentage of allocation for loans and leases receivable commercial	5.80%	6.40%
Arkansas, Indiana, Kentucky, Tennessee [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	4,024	3,545
Percentage of allocation for loans and leases receivable commercial	5.80%	5.40%
Idaho, Montana, Wyoming [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	1,148	1,096
Percentage of allocation for loans and leases receivable commercial	1.60%	1.70%
Arizona, Nevada, New Mexico, Utah [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,917	2,435
Percentage of allocation for loans and leases receivable commercial	4.20%	3.70%
Total Banking Region [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	46,333	43,694
Percentage of allocation for loans and leases receivable commercial	66.20%	66.00%
Florida, Michigan, New York, Pennsylvania, Texas [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	11,762	11,082
Percentage of allocation for loans and leases receivable commercial	16.80%	16.70%
All Other States [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	11,938	11,447
Percentage of allocation for loans and leases receivable commercial	17.00%	17.30%
Outside the Company's banking region [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	23,700	22,529
Percentage of allocation for loans and leases receivable commercial	33.80%	34.00%
Manufacturing [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	10,738	9,518
Percentage of allocation for loans and leases receivable commercial	15.30%	14.40%
Real estate, rental and leasing [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	6,788	5,855
Percentage of allocation for loans and leases receivable commercial	9.70%	8.80%
Wholesale [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	6,346	6,297
Percentage of allocation for loans and leases receivable commercial	9.10%	9.50%
Finance and Insurance [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	5,864	6,579
Percentage of allocation for loans and leases receivable commercial	8.40%	9.90%
Retail Trade [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	5,401	4,735
Percentage of allocation for loans and leases receivable commercial	7.70%	7.20%
Health care and social assistance [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	5,048	4,733
Percentage of allocation for loans and leases receivable commercial	7.20%	7.10%
Public Administration [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	3,934	4,709
Percentage of allocation for loans and leases receivable commercial	5.60%	7.10%
Professional Scientific and Technical Services [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,747	2,185
Percentage of allocation for loans and leases receivable commercial	3.90%	3.30%
Information [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,443	2,203
Percentage of allocation for loans and leases receivable commercial	3.50%	3.30%
Transport and Storage [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,322	2,549
Percentage of allocation for loans and leases receivable commercial	3.30%	3.90%
Educational Services [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,222	1,964
Percentage of allocation for loans and leases receivable commercial	3.20%	3.00%
Arts Entertainment and Recreation [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,214	2,124
Percentage of allocation for loans and leases receivable commercial	3.20%	3.20%
Mining [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	2,094	2,122
Percentage of allocation for loans and leases receivable commercial	3.00%	3.20%
Agriculture Forestry Fishing and Hunting [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	1,508	1,553
Percentage of allocation for loans and leases receivable commercial	2.10%	2.40%
Other Services [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	1,507	1,670
Percentage of allocation for loans and leases receivable commercial	2.10%	2.50%
Utilities [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	1,374	1,390
Percentage of allocation for loans and leases receivable commercial	2.00%	2.10%
Other [Member]	'	'
Loans by Industry Group and Geography [Line Items]	'	'
Commercial	$7,483	$6,037
Percentage of allocation for loans and leases receivable commercial	10.70%	9.10%

Loans_and_Allowance_for_Credit3

Loans and Allowance for Credit Losses - Commercial Real Estate Loans by Property Type and Geography Excluding Covered Loans (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	$39,885	$36,953
Percentage of allocation for loans receivable commercial real estate	100.00%	100.00%
California [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	9,148	8,039
Percentage of allocation for loans receivable commercial real estate	22.90%	21.80%
Colorado [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,781	1,644
Percentage of allocation for loans receivable commercial real estate	4.50%	4.50%
Illinois [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,586	1,555
Percentage of allocation for loans receivable commercial real estate	4.00%	4.20%
Minnesota [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	2,052	1,958
Percentage of allocation for loans receivable commercial real estate	5.20%	5.30%
Missouri [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,573	1,560
Percentage of allocation for loans receivable commercial real estate	3.90%	4.20%
Ohio [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,491	1,512
Percentage of allocation for loans receivable commercial real estate	3.70%	4.10%
Oregon [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,999	1,921
Percentage of allocation for loans receivable commercial real estate	5.00%	5.20%
Washington [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	3,548	3,586
Percentage of allocation for loans receivable commercial real estate	8.90%	9.70%
Wisconsin [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	2,410	2,011
Percentage of allocation for loans receivable commercial real estate	6.00%	5.40%
Iowa, Kansas, Nebraska, North Dakota, South Dakota [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	2,237	2,349
Percentage of allocation for loans receivable commercial real estate	5.60%	6.40%
Arkansas, Indiana, Kentucky, Tennessee [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,718	1,886
Percentage of allocation for loans receivable commercial real estate	4.30%	5.10%
Idaho, Montana, Wyoming [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,265	1,156
Percentage of allocation for loans receivable commercial real estate	3.20%	3.10%
Arizona, Nevada, New Mexico, Utah [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	3,214	2,958
Percentage of allocation for loans receivable commercial real estate	8.10%	8.00%
Total Banking Region [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	34,022	32,135
Percentage of allocation for loans receivable commercial real estate	85.30%	87.00%
Florida, Michigan, New York, Pennsylvania, Texas [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	3,178	2,405
Percentage of allocation for loans receivable commercial real estate	8.00%	6.50%
All Other States [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	2,685	2,413
Percentage of allocation for loans receivable commercial real estate	6.70%	6.50%
Outside the Company's banking region [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	5,863	4,818
Percentage of allocation for loans receivable commercial real estate	14.70%	13.00%
Business owner occupied [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	11,223	11,405
Percentage of allocation for loans receivable commercial real estate	28.10%	30.90%
Industrial Commercial property [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,567	1,586
Percentage of allocation for loans receivable commercial real estate	3.90%	4.30%
Office Commercial property [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	5,173	4,833
Percentage of allocation for loans receivable commercial real estate	13.00%	13.10%
Retail Commercial property [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	4,503	4,537
Percentage of allocation for loans receivable commercial real estate	11.30%	12.30%
Other Commercial property [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	4,253	3,735
Percentage of allocation for loans receivable commercial real estate	10.70%	10.10%
Multi-family [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	7,886	6,857
Percentage of allocation for loans receivable commercial real estate	19.80%	18.50%
Hotel/motel [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	3,251	2,569
Percentage of allocation for loans receivable commercial real estate	8.10%	6.90%
Residential Home Builders [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	1,728	1,142
Percentage of allocation for loans receivable commercial real estate	4.30%	3.10%
Health care facilities [Member]	'	'
Loans by Property Type and Geography [Line Items]	'	'
Commercial real estate	$301	$289
Percentage of allocation for loans receivable commercial real estate	0.80%	0.80%

Investment_Securities_Investme

Investment Securities - Investment Securities (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, amortized cost	$41,059		$39,040
Available-for-sale securities, total, fair value	40,935	[1]	40,139	[1]
Available-for-sale securities, total, weighted average maturity in years	'6 years		'4 years 1 month 6 days
Available-for-sale securities, total, weighted average yield	2.64%		2.93%
Held-to-maturity securities, total, amortized cost	38,920	[1]	34,389	[1]
Held-to-maturity securities, total, fair value	38,368		34,952
Held-to-maturity securities, total, weighted average maturity in years	'4 years 6 months		'3 years 3 months 18 days
Held-to-maturity securities, total, weighted average yield	2.00%		1.94%
Total investment securities amortized cost	79,979		73,429
Total investment securities, percentage	100.00%		100.00%
U.S. Treasury and agencies [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, amortized cost	1,108		'
Available-for-sale securities, total, fair value	1,045		'
Available-for-sale securities, total, weighted average maturity in years	'11 years 10 months 24 days		'
Available-for-sale securities, total, weighted average yield	2.52%		'
Held-to-maturity securities, total, amortized cost	3,114		'
Held-to-maturity securities, total, fair value	3,040		'
Held-to-maturity securities, total, weighted average maturity in years	'3 years 7 months 6 days		'
Held-to-maturity securities, total, weighted average yield	1.42%		'
Total investment securities amortized cost	4,222		4,365
Total investment securities, percentage	5.30%		5.90%
U.S. Treasury and agencies [Member] | Maturing in one year or less [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing within one year, amortized cost	28		'
Available-for-sale, securities maturing within one year, fair value	28		'
Available-for-sale securities, total, weighted average maturity in years	'3 months 18 days		'
Available-for-sale securities, maturing in one year or less, weighted average yield	4.44%		'
Held-to-maturity securities, maturities within one year, amortized cost	1,811		'
Held-to-maturity securities, maturities within one year, fair value	1,814		'
Held-to-maturity securities, total, weighted average maturity in years	'2 months 12 days		'
Held-to-maturity securities, maturing in one year or less, weighted average yield	1.01%		'
U.S. Treasury and agencies [Member] | Maturing after one year through five years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after one through five year, amortized cost	32		'
Available-for-sale, securities maturing after one through five year, fair value	33		'
Available-for-sale securities, total, weighted average maturity in years	'2 years 8 months 12 days		'
Available for sale securities, maturing after one year through five years weighted average yield	3.11%		'
Held-to-maturity securities, maturities after one year through five years, amortized cost	80		'
Held to maturity securities, maturities after one year through five years, fair value	81		'
Held-to-maturity securities, total, weighted average maturity in years	'1 year 4 months 24 days		'
Held-to-maturity securities, maturing after one year through five years, weighted average yield	1.36%		'
U.S. Treasury and agencies [Member] | Maturing after five years through ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after five through ten year, amortized cost	347		'
Available-for-sale, securities maturing after five through ten year, fair value	331		'
Available-for-sale securities, total, weighted average maturity in years	'8 years 1 month 6 days		'
Available-for-sale securities, maturing after five years through ten years, weighted average yield	2.59%		'
Held-to-maturity securities, maturities after five years through ten years, amortized cost	1,163		'
Held-to-maturity securities, maturities after five year through ten years, fair value	1,085		'
Held-to-maturity securities, total, weighted average maturity in years	'8 years 6 months		'
Held-to-maturity securities, maturing after five year through ten years, weighted average yield	2.05%		'
U.S. Treasury and agencies [Member] | Maturing after ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after ten years, amortized cost	701		'
Available-for-sale, securities maturing after ten years, fair value	653		'
Available-for-sale securities, total, weighted average maturity in years	'14 years 8 months 12 days		'
Available-for-sale securities, maturing after ten years, weighted average yield	2.39%		'
Held-to-maturity securities, maturities after ten years, amortized cost	60		'
Held-to-maturity securities, maturities after ten years, fair value	60		'
Held-to-maturity securities, total, weighted average maturity in years	'11 years 3 months 18 days		'
Held-to-maturity securities, maturing after ten years, weighted average yield	1.75%		'
Mortgage-Backed Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, amortized cost	32,564		'
Available-for-sale securities, total, fair value	32,480		'
Available-for-sale securities, total, weighted average maturity in years	'5 years 6 months		'
Available-for-sale securities, total, weighted average yield	1.97%		'
Held-to-maturity securities, total, amortized cost	35,672		'
Held-to-maturity securities, total, fair value	35,194		'
Held-to-maturity securities, total, weighted average maturity in years	'4 years 7 months 6 days		'
Held-to-maturity securities, total, weighted average yield	2.05%		'
Total investment securities amortized cost	68,236		61,019
Total investment securities, percentage	85.30%		83.10%
Mortgage-Backed Securities [Member] | Maturing in one year or less [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing within one year, amortized cost	226		'
Available-for-sale, securities maturing within one year, fair value	231		'
Available-for-sale securities, total, weighted average maturity in years	'7 months 6 days		'
Available-for-sale securities, maturing in one year or less, weighted average yield	2.63%		'
Held-to-maturity securities, maturities within one year, amortized cost	9		'
Held-to-maturity securities, maturities within one year, fair value	9		'
Held-to-maturity securities, total, weighted average maturity in years	'7 months 6 days		'
Held-to-maturity securities, maturing in one year or less, weighted average yield	2.77%		'
Mortgage-Backed Securities [Member] | Maturing after one year through five years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after one through five year, amortized cost	13,864		'
Available-for-sale, securities maturing after one through five year, fair value	13,752		'
Available-for-sale securities, total, weighted average maturity in years	'3 years 10 months 24 days		'
Available for sale securities, maturing after one year through five years weighted average yield	2.16%		'
Held-to-maturity securities, maturities after one year through five years, amortized cost	22,441		'
Held to maturity securities, maturities after one year through five years, fair value	22,217		'
Held-to-maturity securities, total, weighted average maturity in years	'3 years 8 months 12 days		'
Held-to-maturity securities, maturing after one year through five years, weighted average yield	2.30%		'
Mortgage-Backed Securities [Member] | Maturing after five years through ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after five through ten year, amortized cost	16,000		'
Available-for-sale, securities maturing after five through ten year, fair value	16,007		'
Available-for-sale securities, total, weighted average maturity in years	'5 years 10 months 24 days		'
Available-for-sale securities, maturing after five years through ten years, weighted average yield	1.91%		'
Held-to-maturity securities, maturities after five years through ten years, amortized cost	12,424		'
Held-to-maturity securities, maturities after five year through ten years, fair value	12,159		'
Held-to-maturity securities, total, weighted average maturity in years	'5 years 8 months 12 days		'
Held-to-maturity securities, maturing after five year through ten years, weighted average yield	1.66%		'
Mortgage-Backed Securities [Member] | Maturing after ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after ten years, amortized cost	2,474		'
Available-for-sale, securities maturing after ten years, fair value	2,490		'
Available-for-sale securities, total, weighted average maturity in years	'13 years 1 month 6 days		'
Available-for-sale securities, maturing after ten years, weighted average yield	1.20%		'
Held-to-maturity securities, maturities after ten years, amortized cost	798		'
Held-to-maturity securities, maturities after ten years, fair value	809		'
Held-to-maturity securities, total, weighted average maturity in years	'12 years 9 months 18 days		'
Held-to-maturity securities, maturing after ten years, weighted average yield	1.24%		'
Asset-Backed Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, amortized cost	636		'
Available-for-sale securities, total, fair value	653		'
Available-for-sale securities, total, weighted average maturity in years	'6 years 1 month 6 days		'
Available-for-sale securities, total, weighted average yield	2.03%		'
Held-to-maturity securities, total, amortized cost	16		'
Held-to-maturity securities, total, fair value	27		'
Held-to-maturity securities, total, weighted average maturity in years	'5 years		'
Held-to-maturity securities, total, weighted average yield	0.82%		'
Total investment securities amortized cost	652		637
Total investment securities, percentage	0.80%		0.90%
Asset-Backed Securities [Member] | Maturing in one year or less [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, maturing in one year or less, weighted average yield	7.65%		'
Asset-Backed Securities [Member] | Maturing after one year through five years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after one through five year, amortized cost	272		'
Available-for-sale, securities maturing after one through five year, fair value	282		'
Available-for-sale securities, total, weighted average maturity in years	'4 years 1 month 6 days		'
Available for sale securities, maturing after one year through five years weighted average yield	1.31%		'
Held-to-maturity securities, maturities after one year through five years, amortized cost	11		'
Held to maturity securities, maturities after one year through five years, fair value	14		'
Held-to-maturity securities, total, weighted average maturity in years	'3 years 4 months 24 days		'
Held-to-maturity securities, maturing after one year through five years, weighted average yield	0.79%		'
Asset-Backed Securities [Member] | Maturing after five years through ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after five through ten year, amortized cost	364		'
Available-for-sale, securities maturing after five through ten year, fair value	371		'
Available-for-sale securities, total, weighted average maturity in years	'7 years 7 months 6 days		'
Available-for-sale securities, maturing after five years through ten years, weighted average yield	2.57%		'
Held-to-maturity securities, maturities after five years through ten years, amortized cost	4		'
Held-to-maturity securities, maturities after five year through ten years, fair value	4		'
Held-to-maturity securities, total, weighted average maturity in years	'7 years 1 month 6 days		'
Held-to-maturity securities, maturing after five year through ten years, weighted average yield	0.94%		'
Asset-Backed Securities [Member] | Maturing after ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, weighted average maturity in years	'17 years 7 months 6 days		'
Available-for-sale securities, maturing after ten years, weighted average yield	5.15%		'
Held-to-maturity securities, maturities after ten years, amortized cost	1		'
Held-to-maturity securities, maturities after ten years, fair value	9		'
Held-to-maturity securities, total, weighted average maturity in years	'20 years 9 months 18 days		'
Held-to-maturity securities, maturing after ten years, weighted average yield	0.76%		'
Obligations of state and political subdivisions [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, amortized cost	5,673		'
Available-for-sale securities, total, fair value	5,738		'
Available-for-sale securities, total, weighted average maturity in years	'4 years 6 months		'
Available-for-sale securities, total, weighted average yield	6.60%		'
Held-to-maturity securities, total, amortized cost	12		'
Held-to-maturity securities, total, fair value	12		'
Held-to-maturity securities, total, weighted average maturity in years	'8 years 10 months 24 days		'
Held-to-maturity securities, total, weighted average yield	5.02%		'
Total investment securities amortized cost	5,685		6,079
Total investment securities, percentage	7.10%		8.30%
Obligations of state and political subdivisions [Member] | Maturing in one year or less [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing within one year, amortized cost	70		'
Available-for-sale, securities maturing within one year, fair value	70		'
Available-for-sale securities, total, weighted average maturity in years	'4 months 24 days		'
Available-for-sale securities, maturing in one year or less, weighted average yield	6.16%		'
Held-to-maturity securities, total, weighted average maturity in years	'4 months 24 days		'
Held-to-maturity securities, maturing in one year or less, weighted average yield	7.48%		'
Obligations of state and political subdivisions [Member] | Maturing after one year through five years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after one through five year, amortized cost	4,671		'
Available-for-sale, securities maturing after one through five year, fair value	4,772		'
Available-for-sale securities, total, weighted average maturity in years	'2 years 7 months 6 days		'
Available for sale securities, maturing after one year through five years weighted average yield	6.72%		'
Held-to-maturity securities, maturities after one year through five years, amortized cost	3		'
Held to maturity securities, maturities after one year through five years, fair value	3		'
Held-to-maturity securities, total, weighted average maturity in years	'2 years		'
Held-to-maturity securities, maturing after one year through five years, weighted average yield	9.52%		'
Obligations of state and political subdivisions [Member] | Maturing after five years through ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after five through ten year, amortized cost	445		'
Available-for-sale, securities maturing after five through ten year, fair value	438		'
Available-for-sale securities, total, weighted average maturity in years	'6 years 7 months 6 days		'
Available-for-sale securities, maturing after five years through ten years, weighted average yield	5.80%		'
Held-to-maturity securities, maturities after five years through ten years, amortized cost	2		'
Held-to-maturity securities, maturities after five year through ten years, fair value	2		'
Held-to-maturity securities, total, weighted average maturity in years	'7 years 3 months 18 days		'
Held-to-maturity securities, maturing after five year through ten years, weighted average yield	7.85%		'
Obligations of state and political subdivisions [Member] | Maturing after ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after ten years, amortized cost	487		'
Available-for-sale, securities maturing after ten years, fair value	458		'
Available-for-sale securities, total, weighted average maturity in years	'20 years 9 months 18 days		'
Available-for-sale securities, maturing after ten years, weighted average yield	6.25%		'
Held-to-maturity securities, maturities after ten years, amortized cost	7		'
Held-to-maturity securities, maturities after ten years, fair value	7		'
Held-to-maturity securities, total, weighted average maturity in years	'12 years 2 months 12 days		'
Held-to-maturity securities, maturing after ten years, weighted average yield	2.64%		'
Other Debt Securities and Obligations of Foreign Government [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, amortized cost	740		'
Available-for-sale securities, total, fair value	646		'
Available-for-sale securities, total, weighted average maturity in years	'21 years 4 months 24 days		'
Available-for-sale securities, total, weighted average yield	2.70%		'
Held-to-maturity securities, total, amortized cost	106		'
Held-to-maturity securities, total, fair value	95		'
Held-to-maturity securities, total, weighted average maturity in years	'2 years 10 months 24 days		'
Held-to-maturity securities, total, weighted average yield	1.12%		'
Total investment securities amortized cost	1,184		1,329
Total investment securities, percentage	1.50%		1.80%
Other Debt Securities and Obligations of Foreign Government [Member] | Maturing in one year or less [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing within one year, amortized cost	6		'
Available-for-sale, securities maturing within one year, fair value	6		'
Available-for-sale securities, total, weighted average maturity in years	'2 months 12 days		'
Available-for-sale securities, maturing in one year or less, weighted average yield	1.16%		'
Held-to-maturity securities, maturities within one year, amortized cost	6		'
Held-to-maturity securities, maturities within one year, fair value	6		'
Held-to-maturity securities, total, weighted average maturity in years	'6 months		'
Held-to-maturity securities, maturing in one year or less, weighted average yield	1.60%		'
Other Debt Securities and Obligations of Foreign Government [Member] | Maturing after one year through five years [Member]	'		'
Investment Securities [Line Items]	'		'
Held-to-maturity securities, maturities after one year through five years, amortized cost	76		'
Held to maturity securities, maturities after one year through five years, fair value	76		'
Held-to-maturity securities, total, weighted average maturity in years	'1 year 10 months 24 days		'
Held-to-maturity securities, maturing after one year through five years, weighted average yield	1.12%		'
Other Debt Securities and Obligations of Foreign Government [Member] | Maturing after five years through ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Held-to-maturity securities, maturities after five years through ten years, amortized cost	24		'
Held-to-maturity securities, maturities after five year through ten years, fair value	13		'
Held-to-maturity securities, total, weighted average maturity in years	'6 years 9 months 18 days		'
Held-to-maturity securities, maturing after five year through ten years, weighted average yield	0.98%		'
Other Debt Securities and Obligations of Foreign Government [Member] | Maturing after ten years [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale, securities maturing after ten years, amortized cost	734		'
Available-for-sale, securities maturing after ten years, fair value	640		'
Available-for-sale securities, total, weighted average maturity in years	'21 years 6 months		'
Available-for-sale securities, maturing after ten years, weighted average yield	2.71%		'
Other Investments Including Perpetual Preferred Securities [Member]	'		'
Investment Securities [Line Items]	'		'
Available-for-sale securities, total, amortized cost	338		'
Available-for-sale securities, total, fair value	$373		'
Available-for-sale securities, total, weighted average maturity in years	'18 years 10 months 24 days		'
Available-for-sale securities, total, weighted average yield	2.88%		'
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Investment_Securities_Investme1

Investment Securities - Investment Securities (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Amortized Cost And Fair Value Debt Securities [Abstract]	'	'
Federal statutory rate	35.00%	'
Weighted-average maturity of available-for-sale investment securities	'6 years	'4 years 1 month 6 days
Weighted-average yield of available-for-sale investment securities	2.64%	2.93%
Weighted average maturity of held-to-maturity investment securities	'4 years 6 months	'3 years 3 months 18 days
Weighted-average yield of held-to-maturity investment securities	2.00%	1.94%

Loans_and_Allowance_for_Credit4

Loans and Allowance for Credit Losses - Summary of Nonperforming Assets (Detail) (USD $)

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2009

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets Excluding Covered Assets [Member]

Nonperforming Assets Excluding Covered Assets [Member]

Nonperforming Assets Excluding Covered Assets [Member]

Nonperforming Assets Excluding Covered Assets [Member]

Nonperforming Assets Excluding Covered Assets [Member]

Nonperforming Assets Including Covered Assets [Member]

Nonperforming Assets Including Covered Assets [Member]

Nonperforming Assets Including Covered Assets [Member]

Nonperforming Assets Including Covered Assets [Member]

Nonperforming Assets Including Covered Assets [Member]

Commercial And Commercial Real Estate Loans [Member]

Credit Card Other Retail And Residential Mortgages [Member]

Covered Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Member]

Nonperforming Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance December 31, 2012

$2,671

'

$2,037

$2,671

$3,774

$5,048

$5,907

'

'

'

'

'

'

'

'

'

'

$780

$1,308

$583

Commercial

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commercial

64,762

60,742

122

107

280

519

866

'

'

'

'

'

'

'

'

'

'

'

'

'

Lease financing

5,271

5,481

12

16

32

78

125

'

'

'

'

'

'

'

'

'

'

'

'

'

Total commercial

70,033

66,223

134

123

312

597

991

'

'

'

'

'

'

'

'

'

'

'

'

'

Additions to nonperforming assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

New nonaccrual loans and foreclosed properties

1,550

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

427

977

146

Advances on loans

46

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

46

'

'

Total additions

1,596

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

473

977

146

Commercial Real Estate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commercial mortgages

32,183

31,005

182

308

354

545

581

'

'

'

'

'

'

'

'

'

'

'

'

'

Construction and development

7,702

5,948

121

238

545

748

1,192

'

'

'

'

'

'

'

'

'

'

'

'

'

Total commercial real estate

39,885

36,953

303

546

899

1,293

1,773

'

'

'

'

'

'

'

'

'

'

'

'

'

Residential mortgages

37,545

32,648

770

661

650

636

467

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit card

18,021

17,115

78

146

224

228

142

'

'

'

'

'

'

'

'

'

'

'

'

'

Reductions in nonperforming assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Paydowns, payoffs

-789

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-266

-276

-247

Net sales

-609

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-209

-151

-249

Return to performing status

-212

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-38

-166

-8

Charge-offs

-620

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-246

-373

-1

Total reductions

-2,230

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-759

-966

-505

Net additions to (reductions in) nonperforming assets

-634

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-286

11

-359

Balance December 31, 2013

2,037

'

2,037

2,671

3,774

5,048

5,907

'

'

'

'

'

'

'

'

'

'

494

1,319

224

Other Retail

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Retail leasing

5,929

5,419

1

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other

'

'

190

216

67

65

62

'

'

'

'

'

'

'

'

'

'

'

'

'

Total other retail

47,678

47,712

191

217

67

65

62

'

'

'

'

'

'

'

'

'

'

'

'

'

Total loans, excluding covered loans

226,773

212,021

1,476

1,693

2,152

2,819

3,435

'

'

'

'

'

'

'

'

'

'

'

'

'

Covered loans

8,462

11,308

127

386

926

1,244

1,350

'

'

'

'

'

'

'

'

'

'

'

'

'

Total nonperforming loans

235,235

223,329

1,603

2,079

3,078

4,063

4,785

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Real Estate

'

'

327

381

404

511

437

'

'

'

'

'

'

'

'

'

'

'

'

'

Covered Other Real Estate

'

'

97

197

274

453

653

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Assets

'

'

10

14

18

21

32

'

'

'

'

'

'

'

'

'

'

'

'

'

Total nonperforming assets

2,037

'

2,037

2,671

3,774

5,048

5,907

'

'

'

'

'

'

'

'

'

'

494

1,319

224

Total nonperforming assets, excluding covered assets

'

'

1,813

2,088

2,574

3,351

3,904

'

'

'

'

'

'

'

'

'

'

'

'

'

Accruing loans 90 days or more past due

$1,189

$1,323

'

'

'

'

'

$713

$660

$843

$1,094

$1,525

$1,189

$1,323

$1,753

$2,184

$2,309

'

'

'

Nonperforming loans to total loans

'

'

'

'

'

'

'

0.65%

0.80%

1.10%

1.57%

1.99%

0.68%

0.93%

1.47%

2.06%

2.46%

'

'

'

Nonperforming assets to total loans plus other real estate

'

'

'

'

'

'

'

0.80%

0.98%

1.32%

1.87%

2.25%

0.86%

1.19%

1.79%

2.55%

3.02%

'

'

'

Loans_and_Allowance_for_Credit5

Loans and Allowance for Credit Losses - Summary of Nonperforming Assets (Parenthetical) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
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	$3,700,000,000	$3,200,000,000	$2,600,000,000	$2,600,000,000	$2,200,000,000
Foreclosed GNMA loans that continue to accrue interest and excluded from nonperforming assets	$527,000,000	$548,000,000	$692,000,000	$575,000,000	$359,000,000

Shareholders_Equity_Regulatory

Shareholders' Equity - Regulatory Capital Ratios (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Tier 1 capital	$33,386	$31,203
Total risk-based capital	39,340	37,780
Tier 1 capital	4.00%	'
Total risk-based capital	8.00%	'
Leverage	4.00%	'
Tier 1 capital	6.00%	'
Total risk-based capital	10.00%	'
Leverage	5.00%	'
Total U.S. Bancorp [Member]	'	'
Tier 1 capital	33,386	31,203
As a percent of risk-weighted assets	11.20%	10.80%
As a percent of adjusted quarterly average assets (leverage ratio)	9.60%	9.20%
Total risk-based capital	$39,340	$37,780
As a percent of risk-weighted assets	13.20%	13.10%
U.S. Bank National Association [Member]	'	'
As a percent of risk-weighted assets	10.30%	10.60%
As a percent of adjusted quarterly average assets (leverage ratio)	8.80%	9.00%
As a percent of risk-weighted assets	12.40%	12.70%

Significant_Accounting_Policie3

Significant Accounting Policies - Line of Business Financial Performance (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Income Statement	'	'	'
Net interest income (taxable-equivalent basis)	$10,828	$10,969	'
Net interest income (taxable-equivalent basis), Percent change	-1.30%	'	'
Noninterest income	8,765	9,334	'
Noninterest income, Percent change	-6.10%	'	'
Securities gains (losses), net	9	-15	-31
Securities gains (losses), net, Percent change	'	'	'
Total net revenue	19,602	20,288	'
Total net revenue, Percent change	-3.40%	'	'
Noninterest expense, Percent change	-1.30%	'	'
Other intangibles, Percent change	-18.60%	'	'
Total noninterest expense, Percent change	-1.70%	'	'
Income before provision and income taxes, Percent change	-5.10%	'	'
Provision for credit losses, Percent change	-28.80%	'	'
Income before income taxes, Percent change	0.50%	'	'
Income taxes and taxable-equivalent adjustment, Percent change	-8.30%	'	'
Net income, Percent change	4.40%	'	'
Net (income) loss attributable to noncontrolling interests, Percent change	-33.80%	'	'
Net income attributable to U.S. Bancorp, Percent change	3.30%	'	'
Noninterest expense	10,051	10,182	'
Other intangibles	223	274	299
Total noninterest expense	10,274	10,456	9,911
Income before provision and income taxes	9,328	9,832	'
Provision for credit losses	1,340	1,882	2,343
Income before income taxes	7,988	7,950	'
Income taxes and taxable-equivalent adjustment	2,256	2,460	'
Net income	5,732	5,490	4,788
Net (income) loss attributable to noncontrolling interests	104	157	84
Net income attributable to U.S. Bancorp	5,836	5,647	4,872
Average Balance Sheet	'	'	'
Commercial	67,274	60,830	'
Commercial, Percent change	10.60%	'	'
Commercial real estate	38,237	36,505	'
Commercial real estate, Percent change	4.70%	'	'
Residential mortgages	47,982	40,290	'
Residential mortgages, Percent change	19.10%	'	'
Credit card	16,813	16,653	'
Credit card, Percent change	1.00%	'	'
Other retail	47,125	47,938	'
Other retail, Percent change	-1.70%	'	'
Total loans, excluding covered loans	217,431	202,216	'
Total loans, excluding covered loans, Percent change	7.50%	'	'
Covered loans	10,043	13,158	'
Covered loans, Percent change	-23.70%	'	'
Total loans	227,474	215,374	'
Total loans, Percent change	5.60%	'	'
Goodwill, Percent change	2.40%	'	'
Other intangible assets, Percent change	18.20%	'	'
Assets, Percent change	2.90%	'	'
Noninterest-bearing deposits, Percent change	2.60%	'	'
Interest checking, Percent change	7.40%	'	'
Savings products, Percent change	14.30%	'	'
Time deposits, Percent change	-2.90%	'	'
Total deposits, Percent change	6.30%	'	'
Total U.S. Bancorp shareholders' equity, Percent change	6.10%	'	'
Goodwill	9,164	8,953	'
Other intangible assets	3,178	2,688	'
Assets	352,680	342,849	'
Noninterest-bearing deposits	69,020	67,241	'
Interest checking	48,792	45,433	'
Savings products	87,428	76,470	'
Time deposits	45,217	46,566	'
Total deposits	250,457	235,710	'
Total U.S. Bancorp shareholders' equity	39,917	37,611	'
Wholesale Banking and Commercial Real Estate [Member]	'	'	'
Condensed Income Statement	'	'	'
Net interest income (taxable-equivalent basis)	2,088	2,104	'
Net interest income (taxable-equivalent basis), Percent change	-0.80%	'	'
Noninterest income	1,092	1,234	'
Noninterest income, Percent change	-11.50%	'	'
Securities gains (losses), net	'	'	'
Securities gains (losses), net, Percent change	'	'	'
Total net revenue	3,180	3,338	'
Total net revenue, Percent change	-4.70%	'	'
Noninterest expense, Percent change	-1.30%	'	'
Other intangibles, Percent change	-50.00%	'	'
Total noninterest expense, Percent change	-2.00%	'	'
Income before provision and income taxes, Percent change	-6.50%	'	'
Provision for credit losses, Percent change	'	'	'
Income before income taxes, Percent change	-1.70%	'	'
Income taxes and taxable-equivalent adjustment, Percent change	-1.60%	'	'
Net income, Percent change	-1.70%	'	'
Net (income) loss attributable to noncontrolling interests, Percent change	'	'	'
Net income attributable to U.S. Bancorp, Percent change	-1.70%	'	'
Noninterest expense	1,248	1,265	'
Other intangibles	8	16	'
Total noninterest expense	1,256	1,281	'
Income before provision and income taxes	1,924	2,057	'
Provision for credit losses	-97	2	'
Income before income taxes	2,021	2,055	'
Income taxes and taxable-equivalent adjustment	736	748	'
Net income	1,285	1,307	'
Net (income) loss attributable to noncontrolling interests	'	'	'
Net income attributable to U.S. Bancorp	1,285	1,307	'
Average Balance Sheet	'	'	'
Commercial	50,873	45,091	'
Commercial, Percent change	12.80%	'	'
Commercial real estate	20,550	19,635	'
Commercial real estate, Percent change	4.70%	'	'
Residential mortgages	26	60	'
Residential mortgages, Percent change	-56.70%	'	'
Credit card	'	'	'
Credit card, Percent change	'	'	'
Other retail	8	7	'
Other retail, Percent change	14.30%	'	'
Total loans, excluding covered loans	71,457	64,793	'
Total loans, excluding covered loans, Percent change	10.30%	'	'
Covered loans	363	921	'
Covered loans, Percent change	-60.60%	'	'
Total loans	71,820	65,714	'
Total loans, Percent change	9.30%	'	'
Goodwill, Percent change	'	'	'
Other intangible assets, Percent change	-30.60%	'	'
Assets, Percent change	9.30%	'	'
Noninterest-bearing deposits, Percent change	-0.20%	'	'
Interest checking, Percent change	1.60%	'	'
Savings products, Percent change	50.30%	'	'
Time deposits, Percent change	7.50%	'	'
Total deposits, Percent change	9.00%	'	'
Total U.S. Bancorp shareholders' equity, Percent change	14.30%	'	'
Goodwill	1,604	1,604	'
Other intangible assets	25	36	'
Assets	78,253	71,606	'
Noninterest-bearing deposits	31,153	31,224	'
Interest checking	10,515	10,354	'
Savings products	14,144	9,413	'
Time deposits	18,481	17,197	'
Total deposits	74,293	68,188	'
Total U.S. Bancorp shareholders' equity	7,356	6,436	'
Consumer and Small Business Banking [Member]	'	'	'
Condensed Income Statement	'	'	'
Net interest income (taxable-equivalent basis)	4,554	4,737	'
Net interest income (taxable-equivalent basis), Percent change	-3.90%	'	'
Noninterest income	2,904	3,565	'
Noninterest income, Percent change	-18.50%	'	'
Securities gains (losses), net	'	'	'
Securities gains (losses), net, Percent change	'	'	'
Total net revenue	7,458	8,302	'
Total net revenue, Percent change	-10.20%	'	'
Noninterest expense, Percent change	-4.90%	'	'
Other intangibles, Percent change	-21.60%	'	'
Total noninterest expense, Percent change	-5.00%	'	'
Income before provision and income taxes, Percent change	-17.80%	'	'
Provision for credit losses, Percent change	-48.00%	'	'
Income before income taxes, Percent change	-1.60%	'	'
Income taxes and taxable-equivalent adjustment, Percent change	-1.50%	'	'
Net income, Percent change	-1.60%	'	'
Net (income) loss attributable to noncontrolling interests, Percent change	'	'	'
Net income attributable to U.S. Bancorp, Percent change	-1.50%	'	'
Noninterest expense	4,684	4,923	'
Other intangibles	40	51	'
Total noninterest expense	4,724	4,974	'
Income before provision and income taxes	2,734	3,328	'
Provision for credit losses	607	1,167	'
Income before income taxes	2,127	2,161	'
Income taxes and taxable-equivalent adjustment	774	786	'
Net income	1,353	1,375	'
Net (income) loss attributable to noncontrolling interests	'	-1	'
Net income attributable to U.S. Bancorp	1,353	1,374	'
Average Balance Sheet	'	'	'
Commercial	8,396	8,225	'
Commercial, Percent change	2.10%	'	'
Commercial real estate	16,934	16,136	'
Commercial real estate, Percent change	4.90%	'	'
Residential mortgages	47,081	39,827	'
Residential mortgages, Percent change	18.20%	'	'
Credit card	'	'	'
Credit card, Percent change	'	'	'
Other retail	44,847	45,594	'
Other retail, Percent change	-1.60%	'	'
Total loans, excluding covered loans	117,258	109,782	'
Total loans, excluding covered loans, Percent change	6.80%	'	'
Covered loans	6,566	7,510	'
Covered loans, Percent change	-12.60%	'	'
Total loans	123,824	117,292	'
Total loans, Percent change	5.60%	'	'
Goodwill, Percent change	'	'	'
Other intangible assets, Percent change	34.60%	'	'
Assets, Percent change	3.70%	'	'
Noninterest-bearing deposits, Percent change	7.80%	'	'
Interest checking, Percent change	10.30%	'	'
Savings products, Percent change	6.80%	'	'
Time deposits, Percent change	-11.10%	'	'
Total deposits, Percent change	4.30%	'	'
Total U.S. Bancorp shareholders' equity, Percent change	7.80%	'	'
Goodwill	3,515	3,515	'
Other intangible assets	2,406	1,787	'
Assets	139,174	134,258	'
Noninterest-bearing deposits	21,969	20,386	'
Interest checking	33,006	29,911	'
Savings products	46,308	43,342	'
Time deposits	21,136	23,787	'
Total deposits	122,419	117,426	'
Total U.S. Bancorp shareholders' equity	12,148	11,268	'
Wealth Management and Securities Services [Member]	'	'	'
Condensed Income Statement	'	'	'
Net interest income (taxable-equivalent basis)	356	355	'
Net interest income (taxable-equivalent basis), Percent change	0.30%	'	'
Noninterest income	1,235	1,121	'
Noninterest income, Percent change	10.20%	'	'
Securities gains (losses), net	'	'	'
Securities gains (losses), net, Percent change	'	'	'
Total net revenue	1,591	1,476	'
Total net revenue, Percent change	7.80%	'	'
Noninterest expense, Percent change	12.90%	'	'
Other intangibles, Percent change	-10.00%	'	'
Total noninterest expense, Percent change	12.10%	'	'
Income before provision and income taxes, Percent change	-10.70%	'	'
Provision for credit losses, Percent change	-57.10%	'	'
Income before income taxes, Percent change	-8.20%	'	'
Income taxes and taxable-equivalent adjustment, Percent change	-7.30%	'	'
Net income, Percent change	-8.80%	'	'
Net (income) loss attributable to noncontrolling interests, Percent change	'	'	'
Net income attributable to U.S. Bancorp, Percent change	-8.80%	'	'
Noninterest expense	1,304	1,155	'
Other intangibles	36	40	'
Total noninterest expense	1,340	1,195	'
Income before provision and income taxes	251	281	'
Provision for credit losses	6	14	'
Income before income taxes	245	267	'
Income taxes and taxable-equivalent adjustment	89	96	'
Net income	156	171	'
Net income attributable to U.S. Bancorp	156	171	'
Average Balance Sheet	'	'	'
Commercial	1,712	1,333	'
Commercial, Percent change	28.40%	'	'
Commercial real estate	650	609	'
Commercial real estate, Percent change	6.70%	'	'
Residential mortgages	874	400	'
Residential mortgages, Percent change	'	'	'
Credit card, Percent change	'	'	'
Other retail	1,533	1,527	'
Other retail, Percent change	0.40%	'	'
Total loans, excluding covered loans	4,769	3,869	'
Total loans, excluding covered loans, Percent change	23.30%	'	'
Covered loans	14	11	'
Covered loans, Percent change	27.30%	'	'
Total loans	4,783	3,880	'
Total loans, Percent change	23.30%	'	'
Goodwill, Percent change	4.20%	'	'
Other intangible assets, Percent change	1.20%	'	'
Assets, Percent change	16.90%	'	'
Noninterest-bearing deposits, Percent change	0.70%	'	'
Interest checking, Percent change	21.30%	'	'
Savings products, Percent change	14.00%	'	'
Time deposits, Percent change	-3.90%	'	'
Total deposits, Percent change	8.50%	'	'
Total U.S. Bancorp shareholders' equity, Percent change	6.90%	'	'
Goodwill	1,535	1,473	'
Other intangible assets	173	171	'
Assets	7,643	6,538	'
Noninterest-bearing deposits	14,610	14,514	'
Interest checking	4,821	3,975	'
Savings products	26,830	23,543	'
Time deposits	4,906	5,105	'
Total deposits	51,167	47,137	'
Total U.S. Bancorp shareholders' equity	2,385	2,232	'
Payment Services [Member]	'	'	'
Condensed Income Statement	'	'	'
Net interest income (taxable-equivalent basis)	1,584	1,548	'
Net interest income (taxable-equivalent basis), Percent change	2.30%	'	'
Noninterest income	3,205	3,195	'
Noninterest income, Percent change	0.30%	'	'
Securities gains (losses), net	'	'	'
Securities gains (losses), net, Percent change	'	'	'
Total net revenue	4,789	4,743	'
Total net revenue, Percent change	1.00%	'	'
Noninterest expense, Percent change	7.30%	'	'
Other intangibles, Percent change	-16.80%	'	'
Total noninterest expense, Percent change	5.30%	'	'
Income before provision and income taxes, Percent change	-2.20%	'	'
Provision for credit losses, Percent change	10.30%	'	'
Income before income taxes, Percent change	-6.40%	'	'
Income taxes and taxable-equivalent adjustment, Percent change	-6.60%	'	'
Net income, Percent change	-6.40%	'	'
Net (income) loss attributable to noncontrolling interests, Percent change	-2.60%	'	'
Net income attributable to U.S. Bancorp, Percent change	-6.60%	'	'
Noninterest expense	1,964	1,830	'
Other intangibles	139	167	'
Total noninterest expense	2,103	1,997	'
Income before provision and income taxes	2,686	2,746	'
Provision for credit losses	769	697	'
Income before income taxes	1,917	2,049	'
Income taxes and taxable-equivalent adjustment	697	746	'
Net income	1,220	1,303	'
Net (income) loss attributable to noncontrolling interests	-39	-38	'
Net income attributable to U.S. Bancorp	1,181	1,265	'
Average Balance Sheet	'	'	'
Commercial	6,086	5,962	'
Commercial, Percent change	2.10%	'	'
Commercial real estate, Percent change	'	'	'
Residential mortgages, Percent change	'	'	'
Credit card	16,813	16,653	'
Credit card, Percent change	1.00%	'	'
Other retail	737	810	'
Other retail, Percent change	-9.00%	'	'
Total loans, excluding covered loans	23,636	23,425	'
Total loans, excluding covered loans, Percent change	0.90%	'	'
Covered loans	5	5	'
Covered loans, Percent change	'	'	'
Total loans	23,641	23,430	'
Total loans, Percent change	0.90%	'	'
Goodwill, Percent change	6.30%	'	'
Other intangible assets, Percent change	-17.10%	'	'
Assets, Percent change	0.90%	'	'
Noninterest-bearing deposits, Percent change	9.30%	'	'
Interest checking, Percent change	-62.30%	'	'
Savings products, Percent change	46.20%	'	'
Time deposits, Percent change	'	'	'
Total deposits, Percent change	-35.50%	'	'
Total U.S. Bancorp shareholders' equity, Percent change	6.10%	'	'
Goodwill	2,510	2,361	'
Other intangible assets	572	690	'
Assets	29,843	29,580	'
Noninterest-bearing deposits	703	643	'
Interest checking	449	1,192	'
Savings products	57	39	'
Total deposits	1,209	1,874	'
Total U.S. Bancorp shareholders' equity	6,046	5,701	'
Treasury and Corporate Support [Member]	'	'	'
Condensed Income Statement	'	'	'
Net interest income (taxable-equivalent basis)	2,246	2,225	'
Net interest income (taxable-equivalent basis), Percent change	0.90%	'	'
Noninterest income	329	219	'
Noninterest income, Percent change	50.20%	'	'
Securities gains (losses), net	9	-15	'
Securities gains (losses), net, Percent change	'	'	'
Total net revenue	2,584	2,429	'
Total net revenue, Percent change	6.40%	'	'
Noninterest expense, Percent change	-15.70%	'	'
Other intangibles, Percent change	'	'	'
Total noninterest expense, Percent change	-15.70%	'	'
Income before provision and income taxes, Percent change	22.00%	'	'
Provision for credit losses, Percent change	'	'	'
Income before income taxes, Percent change	18.30%	'	'
Income taxes and taxable-equivalent adjustment, Percent change	'	'	'
Net income, Percent change	28.80%	'	'
Net (income) loss attributable to noncontrolling interests, Percent change	-27.00%	'	'
Net income attributable to U.S. Bancorp, Percent change	21.60%	'	'
Noninterest expense	851	1,009	'
Other intangibles	'	'	'
Total noninterest expense	851	1,009	'
Income before provision and income taxes	1,733	1,420	'
Provision for credit losses	55	2	'
Income before income taxes	1,678	1,418	'
Income taxes and taxable-equivalent adjustment	-40	84	'
Net income	1,718	1,334	'
Net (income) loss attributable to noncontrolling interests	143	196	'
Net income attributable to U.S. Bancorp	1,861	1,530	'
Average Balance Sheet	'	'	'
Commercial	207	219	'
Commercial, Percent change	-5.50%	'	'
Commercial real estate	103	125	'
Commercial real estate, Percent change	-17.60%	'	'
Residential mortgages	1	3	'
Residential mortgages, Percent change	-66.70%	'	'
Credit card	'	'	'
Credit card, Percent change	'	'	'
Other retail	'	'	'
Other retail, Percent change	'	'	'
Total loans, excluding covered loans	311	347	'
Total loans, excluding covered loans, Percent change	-10.40%	'	'
Covered loans	3,095	4,711	'
Covered loans, Percent change	-34.30%	'	'
Total loans	3,406	5,058	'
Total loans, Percent change	-32.70%	'	'
Goodwill, Percent change	'	'	'
Other intangible assets, Percent change	-50.00%	'	'
Assets, Percent change	-3.10%	'	'
Noninterest-bearing deposits, Percent change	23.40%	'	'
Interest checking, Percent change	'	'	'
Savings products, Percent change	-33.10%	'	'
Time deposits, Percent change	45.50%	'	'
Total deposits, Percent change	26.20%	'	'
Total U.S. Bancorp shareholders' equity, Percent change	0.10%	'	'
Goodwill	'	'	'
Other intangible assets	2	4	'
Assets	97,767	100,867	'
Noninterest-bearing deposits	585	474	'
Interest checking	1	1	'
Savings products	89	133	'
Time deposits	694	477	'
Total deposits	1,369	1,085	'
Total U.S. Bancorp shareholders' equity	$11,982	$11,974	'

Significant_Accounting_Policie4

Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
	Business
	Segment
Significant Accounting Policies Additional Information [Line Items]	'
Number of reportable operating segments	5
Number of Businesses Wealth Management and Securities Services	5
Threshold limit for equity investments accounted for as available for sale securities	20.00%
Minimum ownership percentage for significant influence under equity method investments	20.00%
Maximum ownership percentage for significant influence under equity method investments	50.00%
Minimum ownership percentage required to treat Limited Partnerships and Limited Liability Companies as equity method investments	5.00%
Number of loan portfolio segments	3
Impairment loan threshold for allowance in which loans are individually analyzed	$5
Minimum period for non collection of principal and interest placed on nonaccrual status for commercial loans	'90 days
Minimum period beyond which revolving consumer lines and credit cards are charged off	'180 days
Minimum period beyond which 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 loan financial difficulty modifications	'60 months
Maximum restructuring period under credit card loan temporary financial hardship modifications	'Up to 12 months
Amortization Period For Unrealized Difference Between Actual Experience and Expected Returns Of Pension Assets	'12 years
Junior Lien [Member]	'
Significant Accounting Policies Additional Information [Line Items]	'
Number of past days for nonaccrual status	'120 days
First Lien [Member]	'
Significant Accounting Policies Additional Information [Line Items]	'
Number of past days for nonaccrual status	'180 days
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 for capturing full economic cycle in the evaluation	'13 years
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
Furniture and Equipment [Member] | Minimum [Member]	'
Significant Accounting Policies Additional Information [Line Items]	'
Property, Plant and Equipment, Useful Life	'3 years
Furniture and Equipment [Member] | Maximum [Member]	'
Significant Accounting Policies Additional Information [Line Items]	'
Property, Plant and Equipment, Useful Life	'20 years
Building [Member]	'
Significant Accounting Policies Additional Information [Line Items]	'
Property, Plant and Equipment, Useful Life	'40 years

Business_Combinations_and_Dive1

Business Combinations and Divestitures - Additional Information (Detail) (USD $)	Jan. 31, 2012	Nov. 30, 2012	Dec. 31, 2012	Feb. 28, 2013	Nov. 30, 2013
In Millions, unless otherwise specified	Bank East Acquisition [Member]	Alternative Investment Solutions Acquisition [Member]	FSV Payment Systems Acquisition [Member]	Collective Point of Sale Solutions Acquisition [Member]	Quintillion Holding Company Limited Acquisition [Member]
Business Acquisition [Line Items]	'	'	'	'	'
Value of asset acquired	$261	$108	$243	$34	$57
Value of liability acquired	$252	$3	$28	$4	$10

Restrictions_on_Cash_and_Due_f1

Restrictions on Cash and Due from Banks - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Billions, unless otherwise specified
Cash And Cash Equivalents [Abstract]	'	'
Minimum average reserve balances to be maintain at bank subsidiaries	$1.80	$1.70
Balances held at the federal reserve	$1.90	$0.90

Investment_Securities_Investme2

Investment Securities - Investment Securities Held to Maturity (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	$38,920	[1]	$34,389	[1]
Held-to-maturity securities, Unrealized Gains	205		590
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	-1		-3
Held-to-maturity securities, Unrealized Losses Other	-756		-24
Held-to-maturity securities, Fair Value	38,368		34,952
U.S. Treasury and agencies [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	3,114		3,154
Held-to-maturity securities, Unrealized Gains	5		27
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	-79		'
Held-to-maturity securities, Fair Value	3,040		3,181
Collateralized Debt/Loan Obligation Asset-Backed Securities [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	'		7
Held-to-maturity securities, Unrealized Gains	9		15
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	'		'
Held-to-maturity securities, Fair Value	9		22
Asset Backed Securities Other [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	16		19
Held-to-maturity securities, Unrealized Gains	4		2
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	-1		-3
Held-to-maturity securities, Unrealized Losses Other	-1		-1
Held-to-maturity securities, Fair Value	18		17
Obligations of state and political subdivisions [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	12		20
Held-to-maturity securities, Unrealized Gains	'		1
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	'		'
Held-to-maturity securities, Fair Value	12		21
Obligations of foreign governments [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	7		7
Held-to-maturity securities, Unrealized Gains	'		'
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	'		'
Held-to-maturity securities, Fair Value	7		7
Other debt securities [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	99		115
Held-to-maturity securities, Unrealized Gains	'		'
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	-11		-17
Held-to-maturity securities, Fair Value	88		98
Agency [Member] | Residential [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	35,671		31,064
Held-to-maturity securities, Unrealized Gains	187		545
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	-665		-6
Held-to-maturity securities, Fair Value	35,193		31,603
Residential Non-Agency Non-Prime [Member] | Residential [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	1		1
Held-to-maturity securities, Unrealized Gains	'		'
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	'		'
Held-to-maturity securities, Fair Value	1		1
Non-Agency [Member] | Commercial [Member]	'		'
Schedule of Held-to-maturity Securities [Line Items]	'		'
Held-to-maturity securities, Amortized Cost	'		2
Held-to-maturity securities, Unrealized Gains	'		'
Held-to-maturity securities, Unrealized Losses Other-than-Temporary	'		'
Held-to-maturity securities, Unrealized Losses Other	'		'
Held-to-maturity securities, Fair Value	'		$2
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Investment_Securities_Investme3

Investment Securities - Investment Securities Available for Sale (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	$41,059		$39,040
Available-for-sale securities, Unrealized Gains	651		1,246
Available-for-sale securities, Unrealized Losses Other-than-Temporary	-13		-36
Available-for-sale securities, Unrealized Losses Other	-762		-111
Available-for-sale securities, Fair Value	40,935	[1]	40,139	[1]
U.S. Treasury and agencies [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	1,108		1,211
Available-for-sale securities, Unrealized Gains	4		16
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	-67		-1
Available-for-sale securities, Fair Value	1,045		1,226
Collateralized Debt/Loan Obligation Asset-Backed Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	20		32
Available-for-sale securities, Unrealized Gains	4		10
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	'		'
Available-for-sale securities, Fair Value	24		42
Asset Backed Securities Other [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	616		579
Available-for-sale securities, Unrealized Gains	13		14
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	'		-1
Available-for-sale securities, Fair Value	629		592
Obligations of state and political subdivisions [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	5,673		6,059
Available-for-sale securities, Unrealized Gains	116		396
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	-51		'
Available-for-sale securities, Fair Value	5,738		6,455
Obligations of foreign governments [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	6		6
Available-for-sale securities, Unrealized Gains	'		'
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	'		'
Available-for-sale securities, Fair Value	6		6
Corporate debt securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	734		814
Available-for-sale securities, Unrealized Gains	'		2
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	-94		-85
Available-for-sale securities, Fair Value	640		731
Perpetual preferred securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	205		205
Available-for-sale securities, Unrealized Gains	24		27
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	-17		-14
Available-for-sale securities, Fair Value	212		218
Other Investment [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	133		182
Available-for-sale securities, Unrealized Gains	28		20
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	'		'
Available-for-sale securities, Fair Value	161		202
Agency [Member] | Residential [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	31,633		28,754
Available-for-sale securities, Unrealized Gains	449		746
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	-529		-5
Available-for-sale securities, Fair Value	31,553		29,495
Agency [Member] | Commercial [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	148		185
Available-for-sale securities, Unrealized Gains	4		8
Available-for-sale securities, Unrealized Losses Other-than-Temporary	'		'
Available-for-sale securities, Unrealized Losses Other	'		'
Available-for-sale securities, Fair Value	152		193
Residential Non-Agency Prime [Member] | Residential [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	486		641
Available-for-sale securities, Unrealized Gains	4		3
Available-for-sale securities, Unrealized Losses Other-than-Temporary	-8		-16
Available-for-sale securities, Unrealized Losses Other	-4		-4
Available-for-sale securities, Fair Value	478		624
Residential Non-Agency Non-Prime [Member] | Residential [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Available-for-sale securities, Amortized Cost	297		372
Available-for-sale securities, Unrealized Gains	5		4
Available-for-sale securities, Unrealized Losses Other-than-Temporary	-5		-20
Available-for-sale securities, Unrealized Losses Other	'		-1
Available-for-sale securities, Fair Value	$297		$355
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Investment_Securities_Investme4

Investment Securities - Investment Securities Available for Sale (Parenthetical) (Detail)	Dec. 31, 2013
	CreditScore
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_Addition

Investment Securities - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Billions, unless otherwise specified
Investments Debt And Equity Securities [Abstract]	'	'
Weighted-average maturity of the available-for-sale investment securities (in years)	'6 years	'4 years 1 month 6 days
Weighted-average yields of available-for-sale investment securities	2.64%	2.93%
Weighted-average maturity of the held-to-maturity investment securities (in years)	'4 years 6 months	'3 years 3 months 18 days
Weighted-average yields of held-to-maturity investment securities	2.00%	1.94%
Fair value of securities pledged	$17.30	$20.10
Fair value of securities pledged as collateral where counterparty has right to repledge or resell	$2.10	$3.50

Investment_Securities_Amount_o

Investment Securities - Amount of Interest Income from Taxable and Non-Taxable Investment Securities (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Taxable And Tax Exempt Interest Income [Abstract]	'	'	'
Taxable	$1,375	$1,515	$1,517
Non-taxable	256	277	303
Total interest income from investment securities	$1,631	$1,792	$1,820

Investment_Securities_Amount_o1

Investment Securities - Amount of Gross Gains and Losses Realized through Sales of Available for Sale Investment Securities (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments Debt And Equity Securities [Abstract]	'	'	'
Realized gains	$23	$158	$11
Realized losses	'	-99	-7
Net realized gains (losses)	23	59	4
Income tax (benefit) on net realized gains (losses)	$9	$23	$2

Investment_Securities_Summary_

Investment Securities - Summary of Other Than Temporary Impairment by Investment Category (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Other Gains (Losses)	$8	$12	($25)
Available-for-Sale Securities [Member]	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Losses Recorded in Earnings	-14	-74	-35
Other Gains (Losses)	8	12	-25
Total Available for sale other-than-temporary impairment	-6	-62	-60
Available-for-Sale Securities [Member] | Residential Non-Agency Prime [Member]	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Losses Recorded in Earnings	-6	-12	-3
Other Gains (Losses)	2	-9	-5
Total Available for sale other-than-temporary impairment	-4	-21	-8
Available-for-Sale Securities [Member] | Residential Non-Agency Non-Prime [Member]	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Losses Recorded in Earnings	-8	-33	-24
Other Gains (Losses)	6	21	-23
Total Available for sale other-than-temporary impairment	-2	-12	-47
Commercial Non-Agency Mortgage-Backed Securities [Member] | Available-for-Sale Securities [Member]	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Losses Recorded in Earnings	'	-1	'
Other Gains (Losses)	'	-1	'
Total Available for sale other-than-temporary impairment	'	-2	'
Perpetual preferred securities [Member] | Available-for-Sale Securities [Member]	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Losses Recorded in Earnings	'	-27	'
Other Gains (Losses)	'	'	'
Total Available for sale other-than-temporary impairment	'	-27	'
Other Asset-Backed Securities [Member] | Available-for-Sale Securities [Member]	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Losses Recorded in Earnings	'	-1	-4
Other Gains (Losses)	'	1	3
Total Available for sale other-than-temporary impairment	'	'	-1
Obligations of state and political subdivisions [Member] | Available-for-Sale Securities [Member]	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]	'	'	'
Losses Recorded in Earnings	'	'	-4
Other Gains (Losses)	'	'	'
Total Available for sale other-than-temporary impairment	'	'	($4)

Investment_Securities_Summary_1

Investment Securities - Summary of Ranges Used in Valuation of Non-Agency Mortgage-Backed Securities Other Than Temporarily Impaired (Detail)	Dec. 31, 2013	Dec. 31, 2012
Prime Minimum [Member]	'	'
Principal Valuation Assumptions Debt Securities Other Than Temporarily Impaired [Line Items]	'	'
Estimated lifetime prepayment rates	7.00%	6.00%
Lifetime probability of default rates	3.00%	3.00%
Lifetime loss severity rates	30.00%	40.00%
Prime Maximum [Member]	'	'
Principal Valuation Assumptions Debt Securities Other Than Temporarily Impaired [Line Items]	'	'
Estimated lifetime prepayment rates	18.00%	22.00%
Lifetime probability of default rates	7.00%	6.00%
Lifetime loss severity rates	50.00%	50.00%
Prime Average [Member]	'	'
Principal Valuation Assumptions Debt Securities Other Than Temporarily Impaired [Line Items]	'	'
Estimated lifetime prepayment rates	15.00%	14.00%
Lifetime probability of default rates	5.00%	4.00%
Lifetime loss severity rates	48.00%	47.00%
Non-Prime Minimum [Member]	'	'
Principal Valuation Assumptions Debt Securities Other Than Temporarily Impaired [Line Items]	'	'
Estimated lifetime prepayment rates	4.00%	3.00%
Lifetime probability of default rates	7.00%	3.00%
Lifetime loss severity rates	50.00%	45.00%
Non-Prime Maximum [Member]	'	'
Principal Valuation Assumptions Debt Securities Other Than Temporarily Impaired [Line Items]	'	'
Estimated lifetime prepayment rates	9.00%	10.00%
Lifetime probability of default rates	12.00%	10.00%
Lifetime loss severity rates	65.00%	65.00%
Non-Prime Average [Member]	'	'
Principal Valuation Assumptions Debt Securities Other Than Temporarily Impaired [Line Items]	'	'
Estimated lifetime prepayment rates	5.00%	6.00%
Lifetime probability of default rates	9.00%	7.00%
Lifetime loss severity rates	58.00%	56.00%

Investment_Securities_Changes_

Investment Securities - Changes in Credit Losses on Debt Securities (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments Debt And Equity Securities [Abstract]	'	'	'
Balance at beginning of period	$134	$298	$358
Credit losses on securities not previously considered other-than-temporarily impaired	'	6	7
Decreases in expected cash flows on securities for which other-than-temporary impairment was previously recognized	14	41	28
Total other-than-temporary impairment on debt securities	14	47	35
Increases in expected cash flows	-2	-15	-21
Realized losses	-23	-39	-73
Credit losses on security sales and securities expected to be sold	-7	-157	-1
Balance at end of period	$116	$134	$298

Investment_Securities_Gross_Un

Investment Securities - Gross Unrealized Losses and Fair Value of Company's Investments Securities with Unrealized Losses (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	$25,010
Unrealized Losses Less Than 12 Months	-726
Fair Value 12 Months or Greater	395
Unrealized Losses 12 Months or Greater	-31
Fair Value Total	25,405
Unrealized Losses Total	-757
Fair Value Less Than 12 Months	16,728
Unrealized Losses Less Than 12 Months	-601
Fair Value 12 Months or Greater	1,935
Unrealized Losses 12 Months or Greater	-174
Fair Value Total	18,663
Unrealized Losses Total	-775
U.S. Treasury and agencies [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	1,085
Unrealized Losses Less Than 12 Months	-79
Fair Value 12 Months or Greater	'
Unrealized Losses 12 Months or Greater	'
Fair Value Total	1,085
Unrealized Losses Total	-79
Fair Value Less Than 12 Months	849
Unrealized Losses Less Than 12 Months	-59
Fair Value 12 Months or Greater	93
Unrealized Losses 12 Months or Greater	-8
Fair Value Total	942
Unrealized Losses Total	-67
Residential [Member] | Agency [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	23,922
Unrealized Losses Less Than 12 Months	-647
Fair Value 12 Months or Greater	373
Unrealized Losses 12 Months or Greater	-18
Fair Value Total	24,295
Unrealized Losses Total	-665
Fair Value Less Than 12 Months	14,015
Unrealized Losses Less Than 12 Months	-484
Fair Value 12 Months or Greater	1,056
Unrealized Losses 12 Months or Greater	-45
Fair Value Total	15,071
Unrealized Losses Total	-529
Residential [Member] | Residential Non-Agency Prime [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	65
Unrealized Losses Less Than 12 Months	-1
Fair Value 12 Months or Greater	182
Unrealized Losses 12 Months or Greater	-11
Fair Value Total	247
Unrealized Losses Total	-12
Residential [Member] | Residential Non-Agency Non-Prime [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	74
Unrealized Losses Less Than 12 Months	-1
Fair Value 12 Months or Greater	57
Unrealized Losses 12 Months or Greater	-4
Fair Value Total	131
Unrealized Losses Total	-5
Asset Backed Securities Other [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	'
Unrealized Losses Less Than 12 Months	'
Fair Value 12 Months or Greater	10
Unrealized Losses 12 Months or Greater	-2
Fair Value Total	10
Unrealized Losses Total	-2
Fair Value Less Than 12 Months	23
Unrealized Losses Less Than 12 Months	'
Fair Value 12 Months or Greater	3
Unrealized Losses 12 Months or Greater	'
Fair Value Total	26
Unrealized Losses Total	'
Obligations of state and political subdivisions [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	3
Unrealized Losses Less Than 12 Months	'
Fair Value 12 Months or Greater	'
Unrealized Losses 12 Months or Greater	'
Fair Value Total	3
Unrealized Losses Total	'
Fair Value Less Than 12 Months	1,479
Unrealized Losses Less Than 12 Months	-51
Fair Value 12 Months or Greater	10
Unrealized Losses 12 Months or Greater	'
Fair Value Total	1,489
Unrealized Losses Total	-51
Other debt securities [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	'
Unrealized Losses Less Than 12 Months	'
Fair Value 12 Months or Greater	12
Unrealized Losses 12 Months or Greater	-11
Fair Value Total	12
Unrealized Losses Total	-11
Corporate debt securities [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	223
Unrealized Losses Less Than 12 Months	-5
Fair Value 12 Months or Greater	418
Unrealized Losses 12 Months or Greater	-89
Fair Value Total	641
Unrealized Losses Total	-94
Perpetual preferred securities [Member]	'
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Fair Value Less Than 12 Months	'
Unrealized Losses Less Than 12 Months	'
Fair Value 12 Months or Greater	116
Unrealized Losses 12 Months or Greater	-17
Fair Value Total	116
Unrealized Losses Total	($17)

Investment_Securities_Gross_Un1

Investment Securities - Gross Unrealized Losses and Fair Value of Company's Investments Securities with Unrealized Losses (Parenthetical) (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Schedule Of Fair Value And Gross Unrealized Losses [Abstract]	'
Unrealized Losses Total	$17

Loans_and_Allowance_for_Credit6

Loans and Allowance for Credit Losses - Composition of Loan Portfolio (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Accounts Notes And Loans Receivable Classified [Abstract]	'	'
Commercial	$64,762	$60,742
Lease financing	5,271	5,481
Total commercial	70,033	66,223
Commercial Real Estate	'	'
Commercial mortgages	32,183	31,005
Construction and development	7,702	5,948
Total commercial real estate	39,885	36,953
Residential mortgages	37,545	32,648
Home equity loans, first liens	13,611	11,370
Total residential mortgages	51,156	44,018
Credit card	18,021	17,115
Retail leasing	5,929	5,419
Home equity and second mortgages	15,442	16,726
Revolving credit	3,276	3,332
Installment	5,709	5,463
Automobile	13,743	12,593
Student	3,579	4,179
Total other retail	47,678	47,712
Total loans, excluding covered loans	226,773	212,021
Covered loans	8,462	11,308
Total loans	$235,235	$223,329

Loans_and_Allowance_for_Credit7

Loans and Allowance for Credit Losses - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Loans pledged at the Federal Home Loan Bank ("FHLB")	$77,200,000,000	$74,100,000,000
Loans pledged at the Federal Reserve Bank	53,000,000,000	48,600,000,000
Outstanding advances to joint venture	205,000,000	486,000,000
Unearned interest and deferred fees and costs on loans	556,000,000	753,000,000
Outstanding balance of loans where trial period was unsuccessful and no longer eligible for a permanent modification	78,000,000	'
Purchased impaired loans included in covered loans classified as nonperforming assets	5,000,000	82,000,000
Residential Mortgages [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Number of loans in trial period	416	'
Outstanding balance of loans in trial period	58,000,000	'
Estimated post-modification balance of loans in trial period	47,000,000	'
Home equity and second mortgage loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Number of loans in trial period	10	'
Outstanding balance of loans in trial period	1,000,000	'
Estimated post-modification balance of loans in trial period	1,000,000	'
Loans Purchased from GNMA Mortgage Pools [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Number of loans in trial period	2,536	'
Outstanding balance of loans in trial period	328,000,000	'
Estimated post-modification balance of loans in trial period	$307,000,000	'
Government National Mortgage Association [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Number of residential mortgage loans, home equity and second mortgage loans, and GNMA loans where trial period arrangement was unsuccessful	591	'

Loans_and_Allowance_for_Credit8

Loans and Allowance for Credit Losses - Changes in Accretable Balance for Purchased Impaired Loans (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deteriorated Loans Transferred in [Abstract]	'	'	'
Balance at beginning of period	$1,709	$2,619	$2,890
Purchases	'	13	100
Accretion	-499	-437	-451
Disposals	-172	-208	-67
Reclassifications from nonaccretable difference	258	454	184
Other	359	-732	-37
Balance at end of period	$1,655	$1,709	$2,619

Loans_and_Allowance_for_Credit9

Loans and Allowance for Credit Losses - Activity in Allowance for Credit Losses (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	$4,733	$5,014	$5,531
Provision for credit losses	1,340	1,882	2,343
Loans charged off	1,934	2,527	3,229
Less recoveries of loans charged off	-469	-430	-386
Net loans charged off	1,465	2,097	2,843
Other changes	-71	-66	-17
Balance at end of period	4,537	4,733	5,014
Commercial [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	1,051	1,010	1,104
Provision for credit losses	144	316	312
Loans charged off	246	378	516
Less recoveries of loans charged off	-126	-103	-110
Net loans charged off	120	275	406
Other changes	'	'	'
Balance at end of period	1,075	1,051	1,010
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	857	1,154	1,291
Provision for credit losses	-114	-131	361
Loans charged off	92	242	543
Less recoveries of loans charged off	-125	-76	-45
Net loans charged off	-33	166	498
Other changes	'	'	'
Balance at end of period	776	857	1,154
Residential Mortgages [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	935	927	820
Provision for credit losses	212	446	596
Loans charged off	297	461	502
Less recoveries of loans charged off	-25	-23	-13
Net loans charged off	272	438	489
Other changes	'	'	'
Balance at end of period	875	935	927
Credit Card [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	863	992	1,395
Provision for credit losses	677	571	431
Loans charged off	739	769	922
Less recoveries of loans charged off	-83	-102	-88
Net loans charged off	656	667	834
Other changes	'	-33	'
Balance at end of period	884	863	992
Other Retail [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	848	831	807
Provision for credit losses	351	558	628
Loans charged off	523	666	733
Less recoveries of loans charged off	-105	-125	-129
Net loans charged off	418	541	604
Other changes	'	'	'
Balance at end of period	781	848	831
Total Loans, Excluding Covered Loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	4,554	4,914	5,417
Provision for credit losses	1,270	1,760	2,328
Loans charged off	1,897	2,516	3,216
Less recoveries of loans charged off	-464	-429	-385
Net loans charged off	1,433	2,087	2,831
Other changes	'	-33	'
Balance at end of period	4,391	4,554	4,914
Covered Loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Balance at beginning of period	179	100	114
Provision for credit losses	70	122	15
Loans charged off	37	11	13
Less recoveries of loans charged off	-5	-1	-1
Net loans charged off	32	10	12
Other changes	-71	-33	-17
Balance at end of period	$146	$179	$100

Recovered_Sheet1

Loans and Allowance for Credit Losses - Additional Detail of Allowance for Credit Losses and Related Loan Balances by Portfolio Type (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	$32	$40	'	'
TDRs collectively evaluated for impairment	520	754	'	'
Other loans collectively evaluated for impairment	3,815	3,771	'	'
Loans acquired with deteriorated credit quality	170	168	'	'
Total allowance for credit losses	4,537	4,733	5,014	5,531
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	496	729	'	'
TDRs collectively evaluated for impairment	6,243	5,675	'	'
Other loans collectively evaluated for impairment	224,557	211,514	'	'
Loans acquired with deteriorated credit quality	3,939	5,411	'	'
Total loans	226,773	212,021	'	'
Total loans	235,235	223,329	'	'
Commercial [Member]	'	'	'	'
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	15	10	'	'
TDRs collectively evaluated for impairment	19	28	'	'
Other loans collectively evaluated for impairment	1,041	1,013	'	'
Loans acquired with deteriorated credit quality	'	'	'	'
Total allowance for credit losses	1,075	1,051	1,010	1,104
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	197	171	'	'
TDRs collectively evaluated for impairment	155	185	'	'
Other loans collectively evaluated for impairment	69,680	65,863	'	'
Loans acquired with deteriorated credit quality	1	4	'	'
Total loans	70,033	66,223	'	'
Commercial Real Estate [Member]	'	'	'	'
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	17	30	'	'
TDRs collectively evaluated for impairment	26	29	'	'
Other loans collectively evaluated for impairment	700	791	'	'
Loans acquired with deteriorated credit quality	33	7	'	'
Total allowance for credit losses	776	857	1,154	1,291
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	237	510	'	'
TDRs collectively evaluated for impairment	358	391	'	'
Other loans collectively evaluated for impairment	39,128	35,952	'	'
Loans acquired with deteriorated credit quality	162	100	'	'
Total loans	39,885	36,953	'	'
Residential Mortgages [Member]	'	'	'	'
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	'	'	'	'
TDRs collectively evaluated for impairment	329	446	'	'
Other loans collectively evaluated for impairment	546	489	'	'
Loans acquired with deteriorated credit quality	'	'	'	'
Total allowance for credit losses	875	935	927	820
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	'	'	'	'
TDRs collectively evaluated for impairment	5,064	4,199	'	'
Other loans collectively evaluated for impairment	46,090	39,813	'	'
Loans acquired with deteriorated credit quality	2	6	'	'
Total loans	51,156	44,018	'	'
Credit Card [Member]	'	'	'	'
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	'	'	'	'
TDRs collectively evaluated for impairment	87	153	'	'
Other loans collectively evaluated for impairment	797	710	'	'
Loans acquired with deteriorated credit quality	'	'	'	'
Total allowance for credit losses	884	863	992	1,395
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	'	'	'	'
TDRs collectively evaluated for impairment	310	442	'	'
Other loans collectively evaluated for impairment	17,711	16,673	'	'
Loans acquired with deteriorated credit quality	'	'	'	'
Total loans	18,021	17,115	'	'
Other Retail [Member]	'	'	'	'
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	'	'	'	'
TDRs collectively evaluated for impairment	55	97	'	'
Other loans collectively evaluated for impairment	726	751	'	'
Loans acquired with deteriorated credit quality	'	'	'	'
Total allowance for credit losses	781	848	831	807
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	'	'	'	'
TDRs collectively evaluated for impairment	269	313	'	'
Other loans collectively evaluated for impairment	47,409	47,399	'	'
Loans acquired with deteriorated credit quality	'	'	'	'
Total loans	47,678	47,712	'	'
Total Loans, Excluding Covered Loans [Member]	'	'	'	'
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	32	40	'	'
TDRs collectively evaluated for impairment	516	753	'	'
Other loans collectively evaluated for impairment	3,810	3,754	'	'
Loans acquired with deteriorated credit quality	33	7	'	'
Total allowance for credit losses	4,391	4,554	4,914	5,417
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	434	681	'	'
TDRs collectively evaluated for impairment	6,156	5,530	'	'
Other loans collectively evaluated for impairment	220,018	205,700	'	'
Loans acquired with deteriorated credit quality	165	110	'	'
Total loans	226,773	212,021	'	'
Covered Loans [Member]	'	'	'	'
Allowance Balance at End of Period	'	'	'	'
Loans individually evaluated for impairment	'	'	'	'
TDRs collectively evaluated for impairment	4	1	'	'
Other loans collectively evaluated for impairment	5	17	'	'
Loans acquired with deteriorated credit quality	137	161	'	'
Total allowance for credit losses	146	179	100	114
Loan balance at end of period	'	'	'	'
Loans individually evaluated for impairment	62	48	'	'
TDRs collectively evaluated for impairment	87	145	'	'
Other loans collectively evaluated for impairment	4,539	5,814	'	'
Loans acquired with deteriorated credit quality	3,774	5,301	'	'
Total loans	$8,462	$11,308	'	'

Recovered_Sheet2

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Type and Deliquency Status (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	$231,097	$218,204
Accruing 30-89 Days Past Due	1,346	1,723
90 Days or More Past Due	1,189	1,323
Nonperforming	1,603	2,079
Total loans, excluding covered loans	226,773	212,021
Total loans	235,235	223,329
Commercial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	69,587	65,701
Accruing 30-89 Days Past Due	257	341
90 Days or More Past Due	55	58
Nonperforming	134	123
Total loans, excluding covered loans	70,033	66,223
Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	39,459	36,241
Accruing 30-89 Days Past Due	94	158
90 Days or More Past Due	29	8
Nonperforming	303	546
Total loans, excluding covered loans	39,885	36,953
Residential Mortgages [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	49,695	42,728
Accruing 30-89 Days Past Due	358	348
90 Days or More Past Due	333	281
Nonperforming	770	661
Total loans, excluding covered loans	51,156	44,018
Credit Card [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	17,507	16,525
Accruing 30-89 Days Past Due	226	227
90 Days or More Past Due	210	217
Nonperforming	78	146
Total loans, excluding covered loans	18,021	17,115
Other Retail [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	47,156	47,109
Accruing 30-89 Days Past Due	245	290
90 Days or More Past Due	86	96
Nonperforming	191	217
Total loans, excluding covered loans	47,678	47,712
Total Loans, Excluding Covered Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	223,404	208,304
Accruing 30-89 Days Past Due	1,180	1,364
90 Days or More Past Due	713	660
Nonperforming	1,476	1,693
Total loans, excluding covered loans	226,773	212,021
Covered Loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Current	7,693	9,900
Accruing 30-89 Days Past Due	166	359
90 Days or More Past Due	476	663
Nonperforming	127	386
Total loans	$8,462	$11,308

Recovered_Sheet3

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Type and Deliquency Status (Parenthetical) (Detail) (Government National Mortgage Association [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
Government National Mortgage Association [Member]	'	'
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	$440,000,000	$441,000,000
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	$3,700,000,000	$3,200,000,000

Recovered_Sheet4

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Type and Company's Internal Credit Quality Rating (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	$226,773	$212,021
Total loans	235,235	223,329
Total outstanding commitments	477,797	451,841
Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	229,546	215,731
Total outstanding commitments	470,046	442,047
Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	1,679	1,850
Total outstanding commitments	2,939	3,231
Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	4,010	5,748
Total outstanding commitments	4,812	6,563
Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	5,689	7,598
Total outstanding commitments	7,751	9,794
Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	70,033	66,223
Commercial [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	68,075	63,906
Commercial [Member] | Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	1,013	1,114
Commercial [Member] | Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	945	1,203
Commercial [Member] | Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	1,958	2,317
Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	39,885	36,953
Commercial Real Estate [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	38,113	34,096
Commercial Real Estate [Member] | Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	616	621
Commercial Real Estate [Member] | Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	1,156	2,236
Commercial Real Estate [Member] | Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	1,772	2,857
Residential Mortgages [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	51,156	44,018
Residential Mortgages [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	50,152	42,897
Residential Mortgages [Member] | Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	5	18
Residential Mortgages [Member] | Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	999	1,103
Residential Mortgages [Member] | Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	1,004	1,121
Credit Card [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	18,021	17,115
Credit Card [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	17,733	16,752
Credit Card [Member] | Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	'	'
Credit Card [Member] | Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	288	363
Credit Card [Member] | Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	288	363
Other Retail [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	47,678	47,712
Other Retail [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	47,313	47,294
Other Retail [Member] | Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	27	36
Other Retail [Member] | Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	338	382
Other Retail [Member] | Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	365	418
Total Loans, Excluding Covered Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	226,773	212,021
Total Loans, Excluding Covered Loans [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	221,386	204,945
Total Loans, Excluding Covered Loans [Member] | Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	1,661	1,789
Total Loans, Excluding Covered Loans [Member] | Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	3,726	5,287
Total Loans, Excluding Covered Loans [Member] | Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans, excluding covered loans	5,387	7,076
Covered Loans [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	8,462	11,308
Covered Loans [Member] | Pass [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	8,160	10,786
Covered Loans [Member] | Special Mention Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	18	61
Covered Loans [Member] | Classified Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	284	461
Covered Loans [Member] | Total Criticized [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Total loans	$302	$522

Recovered_Sheet5

Loans and Allowance for Credit Losses - Summary of Loans by Portfolio Type and Company's Internal Credit Quality Rating (Parenthetical) (Detail) (Government National Mortgage Association [Member], Trouble Debt Restructure [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Billions, unless otherwise specified
Government National Mortgage Association [Member] | Trouble Debt Restructure [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	$2.60	$2.40
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	$3.70	$3.20

Recovered_Sheet6

Loans and Allowance for Credit Losses - Summary of Impaired Loans by Portfolio Class (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	$7,602	$7,659
Unpaid Principal Balance	10,136	11,082
Valuation Allowance	599	838
Commitments to Lend Additional Funds	112	58
Commercial [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	382	404
Unpaid Principal Balance	804	1,200
Valuation Allowance	36	40
Commitments to Lend Additional Funds	54	39
Commercial Real Estate [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	693	1,077
Unpaid Principal Balance	1,322	2,251
Valuation Allowance	51	70
Commitments to Lend Additional Funds	40	4
Residential Mortgages [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	2,767	2,748
Unpaid Principal Balance	3,492	3,341
Valuation Allowance	308	415
Commitments to Lend Additional Funds	'	'
Credit Card [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	310	442
Unpaid Principal Balance	310	442
Valuation Allowance	87	153
Commitments to Lend Additional Funds	'	'
Other Retail [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	391	443
Unpaid Principal Balance	593	486
Valuation Allowance	59	101
Commitments to Lend Additional Funds	14	3
Total Impaired Loans, Excluding GNMA and Covered Loans [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	4,543	5,114
Unpaid Principal Balance	6,521	7,720
Valuation Allowance	541	779
Commitments to Lend Additional Funds	108	46
Loans Purchased from GNMA Mortgage Pools [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	2,607	1,778
Unpaid Principal Balance	2,607	1,778
Valuation Allowance	28	39
Commitments to Lend Additional Funds	'	'
Covered Loans [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Period-end Recorded Investment	452	767
Unpaid Principal Balance	1,008	1,584
Valuation Allowance	30	20
Commitments to Lend Additional Funds	$4	$12

Recovered_Sheet7

Loans and Allowance for Credit Losses - Summary of Impaired Loans by Portfolio Class (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Financing Receivable, Impaired Loans [Abstract]	'
Interest income recognized on impaired loans	$233
Interest income that would have been recognized on impaired loans at original contractual loan terms	$399

Recovered_Sheet8

Loans and Allowance for Credit Losses - Impaired Loans Average Recorded Investment and Interest Income (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	$7,338	$7,740	$6,767
Interest Income Recognized	369	340	186
Commercial [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	382	470	534
Interest Income Recognized	29	18	12
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	889	1,314	1,537
Interest Income Recognized	39	43	18
Residential Mortgages [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	2,749	2,717	2,557
Interest Income Recognized	134	130	100
Credit Card [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	366	510	485
Interest Income Recognized	16	28	15
Other Retail [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	424	301	164
Interest Income Recognized	24	19	5
Total Impaired Loans, Excluding GNMA and Covered Loans [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	4,810	5,312	5,277
Interest Income Recognized	242	238	150
Loans Purchased from GNMA Mortgage Pools [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	1,967	1,448	710
Interest Income Recognized	100	73	25
Covered Loans [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Average Recorded Investment	561	980	780
Interest Income Recognized	$27	$29	$11

Recovered_Sheet9

Loans and Allowance for Credit Losses - Loans Modified as TDRs (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	SecurityLoan	SecurityLoan	SecurityLoan
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	44,733	79,262	79,233
Pre-Modification Outstanding Loan Balance	$2,158	$3,515	$4,518
Post-Modification Outstanding Loan Balance	2,058	3,394	4,515
Commercial [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	2,429	4,843	5,285
Pre-Modification Outstanding Loan Balance	166	307	456
Post-Modification Outstanding Loan Balance	155	272	427
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	165	312	506
Pre-Modification Outstanding Loan Balance	205	493	1,078
Post-Modification Outstanding Loan Balance	198	461	1,060
Residential Mortgages [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	2,179	4,616	3,611
Pre-Modification Outstanding Loan Balance	309	638	708
Post-Modification Outstanding Loan Balance	304	623	704
Credit Card [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	26,669	49,320	55,951
Pre-Modification Outstanding Loan Balance	160	241	322
Post-Modification Outstanding Loan Balance	161	255	321
Other Retail [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	4,290	10,461	4,028
Pre-Modification Outstanding Loan Balance	103	279	73
Post-Modification Outstanding Loan Balance	102	275	72
Total Loans, Excluding GNMA and Covered Loans [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	35,732	69,552	69,381
Pre-Modification Outstanding Loan Balance	943	1,958	2,637
Post-Modification Outstanding Loan Balance	920	1,886	2,584
Loans Purchased from GNMA Mortgage Pools [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	8,878	9,518	9,569
Pre-Modification Outstanding Loan Balance	1,121	1,280	1,277
Post-Modification Outstanding Loan Balance	1,066	1,245	1,356
Covered Loans [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	123	192	283
Pre-Modification Outstanding Loan Balance	94	277	604
Post-Modification Outstanding Loan Balance	$72	$263	$575

Recovered_Sheet10

Loans and Allowance for Credit Losses - Schedule of Loans Modified as TDRs that have Subsequently been Fully or Partially Charged-Off or Became 90 Days or More Past Due (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	SecurityLoan	SecurityLoan	SecurityLoan
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	15,344	14,948	9,885
Amount Defaulted	$1,117	$810	$419
Commercial [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	642	859	665
Amount Defaulted	46	48	26
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	87	111	64
Amount Defaulted	102	232	67
Residential Mortgages [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	1,099	1,073	623
Amount Defaulted	163	146	127
Credit Card [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	6,640	9,774	7,108
Amount Defaulted	37	54	36
Other Retail [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	1,841	1,818	557
Amount Defaulted	80	56	13
Total Loans, Excluding GNMA and Covered Loans [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	10,309	13,635	9,017
Amount Defaulted	428	536	269
Loans Purchased from GNMA Mortgage Pools [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	4,972	1,245	857
Amount Defaulted	640	177	124
Covered Loans [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Loans	63	68	11
Amount Defaulted	$49	$97	$26

Recovered_Sheet11

Loans and Allowance for Credit Losses - Carrying Amount of Covered Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	$3,775	$5,301
Purchased Nonimpaired Loans	3,087	4,727
Other Assets	1,697	1,477
Covered loans	8,462	11,308
Total covered assets	8,559	11,505
Commercial [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	'	'
Purchased Nonimpaired Loans	32	143
Other Assets	'	'
Covered loans	32	143
Commercial Real Estate [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	738	1,323
Purchased Nonimpaired Loans	1,494	2,695
Other Assets	'	'
Covered loans	2,232	4,018
Residential Mortgages [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	3,037	3,978
Purchased Nonimpaired Loans	890	1,109
Other Assets	'	'
Covered loans	3,927	5,087
Credit Card [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	'	'
Purchased Nonimpaired Loans	5	5
Other Assets	'	'
Covered loans	5	5
Other Retail [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	'	'
Purchased Nonimpaired Loans	666	775
Other Assets	'	'
Covered loans	666	775
Losses Reimbursable by FDIC [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	'	'
Purchased Nonimpaired Loans	'	'
Other Assets	798	1,280
Covered loans	798	1,280
Unamortized Changes in FDIC asset [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	'	'
Purchased Nonimpaired Loans	'	'
Other Assets	802	'
Covered loans	802	'
Covered Loans [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	3,775	5,301
Purchased Nonimpaired Loans	3,087	4,727
Other Assets	1,600	1,280
Covered loans	8,462	11,308
Foreclosed Real Estate [Member]	'	'
Covered Assets [Line Items]	'	'
Purchased Impaired Loans	'	'
Purchased Nonimpaired Loans	'	'
Other Assets	97	197
Total covered assets	$97	$197

Recovered_Sheet12

Loans and Allowance for Credit Losses - Carrying Amount of Covered Assets (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Loss sharing agreement remaining term	'6 years

Leases_Components_of_Net_Inves

Leases - Components of Net Investment in Sales-Type and Direct Financing Leases (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Capital Leases Net Investment In Direct Financing And Sales Type Leases [Abstract]	'	'
Aggregate future minimum lease payments to be received	$11,074	$10,738
Unguaranteed residual values accruing to the lessor's benefit	783	890
Unearned income	-1,045	-1,123
Initial direct costs	189	175
Total net investment in sales-type and direct financing leases	$11,001	$10,680

Leases_Components_of_Net_Inves1

Leases - Components of Net Investment in Sales-Type and Direct Financing Leases (Parenthetical) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Capital Leases Net Investment In Direct Financing And Sales Type Leases [Abstract]	'	'
Accumulated Allowance for uncollectible minimum lease payments	$68	$80

Leases_Minimum_Future_Lease_Pa

Leases - Minimum Future Lease Payments to be Received from Sales-Type and Direct Financing Leases (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Capital Leases Future Minimum Payments Receivable [Abstract]	'
2014	$3,891
2015	3,240
2016	2,518
2017	826
2018	275
Thereafter	$324

Accounting_for_Transfers_and_S1

Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Variable Interest Entity [Line Items]	'	'	'
Realized federal and state income tax credits on investments	$1,500,000,000	$883,000,000	$756,000,000
Tax advantaged investment costs included in tax expense	604,000,000	482,000,000	278,000,000
Tax advantaged investment costs recognized in income statement	1,200,000,000	1,000,000,000	806,000,000
Decrease in other asset as a result of deconsolidation of VIE'S	4,600,000,000	'	'
Decrease in long-term debt as a result of deconsolidation of VIE'S	4,600,000,000	'	'
Company's investment in unconsolidated VIEs	957,000,000	'	'
Aggregate amount of investments in unconsolidated VIEs	2,600,000,000	1,900,000,000	'
Unfunded capital commitments related to unconsolidated VIEs	1,700,000,000	1,300,000,000	'
Company's maximum exposure to unconsolidated VIEs, including any tax implications	7,400,000,000	5,200,000,000	'
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	37,000,000	58,000,000	'
Tender Option Bond Program [Member]	'	'	'
Variable Interest Entity [Line Items]	'	'	'
Assets related to consolidated VIEs	4,600,000,000	5,300,000,000	'
Liabilities related to consolidated VIEs	4,600,000,000	5,000,000,000	'
Community Development and Tax Advantaged Investments [Member]	'	'	'
Variable Interest Entity [Line Items]	'	'	'
Assets related to consolidated VIEs	2,500,000,000	7,100,000,000	'
Liabilities related to consolidated VIEs	1,800,000,000	5,200,000,000	'
Aggregate amount of investments in unconsolidated VIEs	2,500,000,000	1,800,000,000	'
Company's maximum exposure previously recorded tax credits	4,900,000,000	3,300,000,000	'
Conduit [Member]	'	'	'
Variable Interest Entity [Line Items]	'	'	'
Assets related to consolidated VIEs	$116,000,000	$144,000,000	'

Premises_and_Equipment_Premise

Premises and Equipment - Premises and Equipment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Gross Premises and Equipment	$6,505	$6,438
Less accumulated depreciation and amortization	-3,899	-3,768
Total Premises and Equipment	2,606	2,670
Land [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Gross Premises and Equipment	529	534
Building and Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Gross Premises and Equipment	3,256	3,222
Furniture Fixtures and Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Gross Premises and Equipment	2,593	2,543
Capitalized Building and Equipment Leases [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Gross Premises and Equipment	103	97
Construction in Progress [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Gross Premises and Equipment	$24	$42

Mortgage_Servicing_Rights_Addi

Mortgage Servicing Rights - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Transfers And Servicing Of Financial Assets [Abstract]	'	'	'
Company serviced residential mortgage loan for others	$226,800,000,000	$215,600,000,000	'
Gain/Loss on the fair value of mortgage servicing rights and fair value changes of derivatives used to offset MSR	192,000,000	102,000,000	183,000,000
Loan servicing fees	$754,000,000	$720,000,000	$651,000,000

Mortgage_Servicing_Rights_Chan

Mortgage Servicing Rights - Changes in Fair Value of Capitalized MSRs (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Transfers And Servicing Of Financial Assets [Abstract]	'	'	'
Balance at beginning of period	$1,700	$1,519	$1,837
Rights purchased	8	42	35
Rights capitalized	769	957	619
Changes in fair value of MSRs	'	'	'
Due to fluctuations in market interest rates	617	-249	-619
Due to revised assumptions or models	33	-21	33
Other changes in fair value	-447	-548	-386
Balance at end of period	$2,680	$1,700	$1,519

Mortgage_Servicing_Rights_Sens

Mortgage Servicing Rights - Sensitivity to Changes in Interest Rates to Fair Value of MSRs Portfolio and Related Derivative Instruments (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Down Scenario [Member] | MSR Portfolio [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	($435)	($370)
Net fair value 50 basis points	-199	-217
Net fair value 25 basis points	-93	-118
Down Scenario [Member] | Derivative instrument hedges [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	399	473
Net fair value 50 basis points	194	249
Net fair value 25 basis points	91	124
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	-36	103
Net fair value 50 basis points	-5	32
Net fair value 25 basis points	-2	6
Up Scenario [Member] | MSR Portfolio [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	287	480
Net fair value 50 basis points	154	249
Net fair value 25 basis points	82	126
Up Scenario [Member] | Derivative instrument hedges [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	-301	-486
Net fair value 50 basis points	-157	-243
Net fair value 25 basis points	-82	-121
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	-14	-6
Net fair value 50 basis points	-3	6
Net fair value 25 basis points	'	$5

Mortgage_Servicing_Rights_MSRs

Mortgage Servicing Rights - MSRs and Related Characteristics by Portfolio (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified	BasisPoint	BasisPoint
	Multiple	Multiple
Servicing Assets at Fair Value [Line Items]	'	'	'	'
Servicing portfolio	$226,842	$215,637	'	'
Fair value	2,680	1,700	1,519	1,837
Value (bps)	118	79	'	'
Weighted-average servicing fees (bps)	30	31	'	'
Multiple (value/servicing fees)	3.93	2.55	'	'
Weighted-average note rate	4.22%	4.54%	'	'
Weighted-average age (in years)	'2 years 7 months 6 days	'2 years 7 months 6 days	'	'
Weighted-average expected prepayment (constant prepayment rate)	11.20%	20.10%	'	'
Weighted-average expected life (in years)	'7 years 1 month 6 days	'4 years 2 months 12 days	'	'
Weighted-average discount rate	10.20%	10.40%	'	'
MRBP [Member]	'	'	'	'
Servicing Assets at Fair Value [Line Items]	'	'	'	'
Servicing portfolio	15,896	14,143	'	'
Fair value	180	154	'	'
Value (bps)	113	109	'	'
Weighted-average servicing fees (bps)	39	40	'	'
Multiple (value/servicing fees)	2.9	2.73	'	'
Weighted-average note rate	4.70%	5.13%	'	'
Weighted-average age (in years)	'3 years 9 months 18 days	'4 years 2 months 12 days	'	'
Weighted-average expected prepayment (constant prepayment rate)	13.50%	13.20%	'	'
Weighted-average expected life (in years)	'6 years 2 months 12 days	'6 years 1 month 6 days	'	'
Weighted-average discount rate	11.90%	12.10%	'	'
Government [Member]	'	'	'	'
Servicing Assets at Fair Value [Line Items]	'	'	'	'
Servicing portfolio	41,659	39,048	'	'
Fair value	500	314	'	'
Value (bps)	120	80	'	'
Weighted-average servicing fees (bps)	32	33	'	'
Multiple (value/servicing fees)	3.75	2.42	'	'
Weighted-average note rate	4.24%	4.57%	'	'
Weighted-average age (in years)	'2 years 7 months 6 days	'2 years 4 months 24 days	'	'
Weighted-average expected prepayment (constant prepayment rate)	11.50%	21.20%	'	'
Weighted-average expected life (in years)	'6 years 10 months 24 days	'4 years 2 months 12 days	'	'
Weighted-average discount rate	11.20%	11.40%	'	'
Conventional [Member]	'	'	'	'
Servicing Assets at Fair Value [Line Items]	'	'	'	'
Servicing portfolio	169,287	162,446	'	'
Fair value	$2,000	$1,232	'	'
Value (bps)	118	76	'	'
Weighted-average servicing fees (bps)	29	30	'	'
Multiple (value/servicing fees)	4.07	2.53	'	'
Weighted-average note rate	4.17%	4.48%	'	'
Weighted-average age (in years)	'2 years 6 months	'2 years 6 months	'	'
Weighted-average expected prepayment (constant prepayment rate)	10.90%	20.40%	'	'
Weighted-average expected life (in years)	'7 years 2 months 12 days	'4 years 1 month 6 days	'	'
Weighted-average discount rate	9.80%	10.00%	'	'

Intangible_Assets_Intangible_A

Intangible Assets - Intangible Assets (Detail) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Millions, unless otherwise specified

Merchant processing contracts [Member]

Merchant processing contracts [Member]

Core deposit benefits [Member]

Core deposit benefits [Member]

Trust relationships [Member]

Trust relationships [Member]

Other identified intangibles [Member]

Other identified intangibles [Member]

Straight line method [Member]

Straight line method [Member]

Straight line method [Member]

Straight line method [Member]

Accelerated method [Member]

Accelerated method [Member]

Accelerated method [Member]

Accelerated method [Member]

Merchant processing contracts [Member]

Core deposit benefits [Member]

Trust relationships [Member]

Other identified intangibles [Member]

Merchant processing contracts [Member]

Core deposit benefits [Member]

Trust relationships [Member]

Other identified intangibles [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated Life

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'22 years

'14 years

'9 years

'8 years

'5 years

'6 years

'5 years

Amortization Method

'

'

'

'

'SL/AC

'

'SL/AC

'

'SL/AC

'

'SL/AC

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets

'

'

'

'

$229

$281

$135

$176

$122

$149

$363

$400

'

'

'

'

'

'

'

'

Goodwill

9,205

9,143

8,927

8,954

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage servicing rights

2,680

1,700

1,519

1,837

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total

$12,734

$11,849

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible_Assets_Aggregate_Am

Intangible Assets - Aggregate Amortization Expense (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of intangibles	$223	$274	$299
Merchant processing contracts [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of intangibles	64	74	90
Core deposit benefits [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of intangibles	41	60	81
Trust relationships [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of intangibles	34	39	35
Other identified intangibles [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of intangibles	$84	$101	$93

Intangible_Assets_Estimated_Am

Intangible Assets - Estimated Amortization Expense (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'
2014	$184
2015	148
2016	119
2017	98
2018	$78

Intangible_Assets_Changes_in_C

Intangible Assets - Changes in Carrying Value of Goodwill (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]	'	'	'
Goodwill, Beginning Balance	$9,143	$8,927	$8,954
Goodwill acquired	57	208	'
Other	5	8	-27
Goodwill, Ending Balance	9,205	9,143	8,927
Wholesale Banking and Commercial Real Estate [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill, Beginning Balance	1,605	1,605	1,605
Goodwill acquired	'	'	'
Other	'	'	'
Goodwill, Ending Balance	1,605	1,605	1,605
Consumer and Small Business Banking [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill, Beginning Balance	3,514	3,514	3,535
Goodwill acquired	'	'	'
Other	'	'	-21
Goodwill, Ending Balance	3,514	3,514	3,514
Wealth Management and Securities Services [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill, Beginning Balance	1,528	1,463	1,463
Goodwill acquired	37	65	'
Other	'	'	'
Goodwill, Ending Balance	1,565	1,528	1,463
Payment Services [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill, Beginning Balance	2,496	2,345	2,351
Goodwill acquired	20	143	'
Other	5	8	-6
Goodwill, Ending Balance	2,521	2,496	2,345
Treasury and Corporate Support [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill, Beginning Balance	'	'	'
Goodwill acquired	'	'	'
Other	'	'	'
Goodwill, Ending Balance	'	'	'

ShortTerm_Borrowings_Summary_o

Short-Term Borrowings - Summary of Short-Term Borrowings (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Short-term Debt [Line Items]	'	'	'
Short-term borrowings	$27,608	$26,302	$30,468
Short-term borrowings, interest rate, at year end	0.52%	0.57%	0.89%
Short-term borrowings, average for the year	27,683	28,549	30,703
Short-term borrowings, interest rate, average for the year	1.29%	1.57%	1.75%
Federal funds purchased [Member]	'	'	'
Short-term Debt [Line Items]	'	'	'
Short-term borrowings	594	950	1,036
Short-term borrowings, interest rate, at year end	0.11%	0.11%	0.11%
Short-term borrowings, average for the year	1,879	1,338	968
Short-term borrowings, interest rate, average for the year	9.72%	15.32%	22.61%
Short-term borrowings maximum month end balance	3,569	2,467	1,172
Securities sold under agreements to repurchase [Member]	'	'	'
Short-term Debt [Line Items]	'	'	'
Short-term borrowings	2,057	3,388	6,986
Short-term borrowings, interest rate, at year end	5.34%	3.26%	3.35%
Short-term borrowings, average for the year	2,403	4,942	7,483
Short-term borrowings, interest rate, average for the year	4.65%	3.52%	3.22%
Short-term borrowings maximum month end balance	3,121	5,922	9,071
Commercial paper [Member]	'	'	'
Short-term Debt [Line Items]	'	'	'
Short-term borrowings	19,400	16,202	15,973
Short-term borrowings, interest rate, at year end	0.11%	0.12%	0.12%
Short-term borrowings, average for the year	17,467	15,806	15,204
Short-term borrowings, interest rate, average for the year	0.12%	0.14%	0.15%
Short-term borrowings maximum month end balance	19,400	17,385	16,768
Other short term borrowings [Member]	'	'	'
Short-term Debt [Line Items]	'	'	'
Short-term borrowings	5,557	5,762	6,473
Short-term borrowings, interest rate, at year end	0.19%	0.29%	0.26%
Short-term borrowings, average for the year	5,934	6,463	7,048
Short-term borrowings, interest rate, average for the year	0.72%	0.72%	0.77%
Short-term borrowings maximum month end balance	$6,301	$7,443	$7,514

ShortTerm_Borrowings_Summary_o1

Short-Term Borrowings - Summary of Short-Term Borrowings (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Disclosure [Abstract]	'	'	'
Tax rate on interest	35.00%	'	'
Compensation expense included in federal funds purchased and short term borrowings rates	$181	$203	$218

LongTerm_Debt_Summary_of_Longt

Long-Term Debt - Summary of Long-term Debt (Detail) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

In Millions, unless otherwise specified

Junior subordinated debentures [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Fixed Rate [Member]

Floating Rate [Member]

Floating Rate [Member]

Floating Rate [Member]

Floating Rate [Member]

Floating Rate [Member]

Floating Rate [Member]

Floating Rate [Member]

Capitalized lease obligations, mortgage indebtedness and other [Member]

Capitalized lease obligations, mortgage indebtedness and other [Member]

Capitalized lease obligations, mortgage indebtedness and other [Member]

Capitalized lease obligations, mortgage indebtedness and other [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Parent Company [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Parent Company [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subsidiaries [Member]

Subordinated notes [Member]

Subordinated notes [Member]

Subordinated notes two [Member]

Subordinated notes two [Member]

Medium-term notes [Member]

Medium-term notes [Member]

Junior subordinated debentures [Member]

Junior subordinated debentures [Member]

Subordinated notes three [Member]

Subordinated notes three [Member]

Subordinated notes four [Member]

Subordinated notes four [Member]

Subordinated notes five [Member]

Subordinated notes five [Member]

Subordinated notes six [Member]

Subordinated notes six [Member]

Federal Home Loan Bank advances [Member]

Federal Home Loan Bank advances [Member]

Medium-term notes [Member]

Subordinated notes seven [Member]

Subordinated notes seven [Member]

Federal Home Loan Bank advances [Member]

Federal Home Loan Bank advances [Member]

Bank notes [Member]

Bank notes [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

2.95%

'

7.50%

'

'

'

3.44%

'

6.30%

'

4.95%

'

4.80%

'

3.78%

'

'

'

0.73%

0.52%

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum

'

'

6.30%

'

'

'

'

'

'

'

'

'

'

'

'

1.65%

'

'

'

'

'

'

'

'

'

'

'

1.25%

'

'

'

'

0.24%

'

'

'

Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum

'

'

6.63%

'

'

'

'

'

'

'

'

'

'

'

'

4.20%

'

'

'

'

'

'

'

'

'

'

'

8.25%

'

'

'

'

0.51%

'

'

'

Debt Instrument Maturity Year, start

'

'

'

'

'

'

'

'

'

'

'

1-Jan-22

'

1-Jan-26

'

1-Jan-14

'

1-Jan-16

'

1-Jan-14

'

1-Jan-14

'

1-Jan-15

'

1-Jan-20

'

1-Jan-14

'

1-Jan-18

1-Jan-14

'

1-Jan-14

'

1-Jan-46

'

Debt Instrument Maturity Year, End

'

'

'

'

'

'

'

'

'

'

'

31-Dec-22

'

31-Dec-26

'

31-Dec-22

'

31-Dec-16

'

31-Dec-14

'

31-Dec-14

'

31-Dec-15

'

31-Dec-20

'

31-Dec-26

'

31-Dec-18

31-Dec-14

'

31-Dec-22

'

31-Dec-48

'

Long-term debt

$20,049

$25,516

'

$11,416

$12,772

$167

$173

$8,633

$12,744

$563

$4,670

$1,300

$1,300

$199

$199

$8,750

$10,600

$500

$500

$963

$963

$1,000

$1,000

$500

$500

$500

$500

$13

$16

$500

$373

$373

$4,579

$4,579

$142

$143

LongTerm_Debt_Summary_of_Longt1

Long-Term Debt - Summary of Long-term Debt (Parenthetical) (Detail)	Dec. 31, 2013
Federal Home Loan Bank advances [Member]	'
Debt Instrument [Line Items]	'
Weighted-average interest rate	0.28%
Fixed Rate [Member] | Medium-term notes [Member]	'
Debt Instrument [Line Items]	'
Weighted-average interest rate	2.78%

LongTerm_Debt_Additional_Infor

Long-Term Debt - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]	'	'	'
Debenture redeemed	$2,883,000,000	$11,415,000,000	$3,300,000,000
Junior subordinated debentures [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debenture redeemed	'	2,700,000,000	'
Fixed rate interest payable for junior subordinated debentures, minimum	'	6.30%	'
Fixed rate interest payable for junior subordinated debentures, maximum	'	6.63%	'
Issuance of junior subordinate debenture	0	0	'
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	$69,700,000,000	$60,900,000,000	'

LongTerm_Debt_Maturities_of_Lo

Long-Term Debt - Maturities of Long-term Debt Outstanding (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Schedule Of Maturities Of Long Term Debt [Line Items]	'	'
2014	$4,132	'
2015	3,013	'
2016	3,813	'
2017	2,545	'
2018	1,534	'
Thereafter	5,012	'
Total	20,049	25,516
Parent Company [Member]	'	'
Schedule Of Maturities Of Long Term Debt [Line Items]	'	'
2014	1,499	'
2015	1,749	'
2016	1,940	'
2017	1,247	'
2018	1,496	'
Thereafter	3,485	'
Total	$11,416	$12,772

Junior_Subordinated_Debentures1

Junior Subordinated Debentures - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
			Long-term debt securities [Member]	Long-term debt securities [Member]	USB Capital IX [Member]	USB Capital IX [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'
Percentage of common equity in wholly owned and sponsored USB Capital IX	'	'	'	'	100.00%	'
Issuance Trust	'USB Capital IX	'	'	'	'	'
Debentures Redeemed	'	$176	'	'	'	'
Debenture amount	'	'	500	500	'	'
Value of preferred stock held by unconsolidated trust	'	'	'	'	$676	$676

Shareholders_Equity_Additional

Shareholders' Equity - Additional Information (Detail) (USD $)

12 Months Ended

12 Months Ended

In Millions, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2006

Dec. 31, 2008

Dec. 31, 2006

Dec. 31, 2013

Series H [Member]

Series F [Member]

Series G [Member]

Series A [Member]

Series A [Member]

Series A [Member]

Series D [Member]

Series B [Member]

Series D [Member]

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

1,800,000,000

1,900,000,000

'

'

'

'

'

'

'

'

'

'

Number of common stock share for future issuance

106,000,000

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock, Shares Issued

'

'

'

20,000

44,000

43,400

6,764

5,746

'

20,000

40,000

'

Liquidation preference per share

'

'

'

$25,000

$25,000

$25,000

$100,000

$100,000

$100,000

$25,000

$25,000

'

Preferred stock dividend rate fixed percentage

'

'

'

5.15%

6.50%

6.00%

3.50%

3.50%

'

'

3.50%

'

Redemption period of preferred stock

'

'

'

'90 days

'90 days

'90 days

'

'

'

'

'

'

Preferred stock redemption date

'

'

'

15-Jul-18

15-Jan-22

15-Apr-17

'

'

'

'

'

'

Preferred stock dividend rate variable percentage

'

'

'

'

4.47%

4.86%

1.02%

1.02%

1.15%

'

0.60%

'

Preferred stock dividend rate period

'

'

'

'

'Three-month LIBOR plus

'Three-month LIBOR plus

'Three-month LIBOR plus

'Three-month LIBOR plus

'Three-month LIBOR plus

'

'Three-month LIBOR plus

'

Minority interest preferred stock, shares issued

'

'

'

'

'

'

'

'

5,000

'

'

'

Impact of preferred stock redemption

$8

'

'

'

'

'

'

'

'

'

'

$8

Remaining authorized share repurchase amount

$488

'

'

'

'

'

'

'

'

'

'

'

Shareholders_Equity_Number_of_

Shareholders' Equity - Number of Shares Issued and Outstanding and Carrying Amount of Preferred Stock (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, except Share data, unless otherwise specified
Class of Stock [Line Items]	'	'
Shares Issued and Outstanding	159,910	159,910
Liquidation Preference	$4,936	$4,936
Discount	180	167
Carrying Amount	4,756	4,769
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
Discount	'	'
Carrying Amount	1,000	1,000
Series D [Member]	'	'
Class of Stock [Line Items]	'	'
Shares Issued and Outstanding	'	20,000
Liquidation Preference	'	500
Discount	'	'
Carrying Amount	'	500
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	'
Liquidation Preference	500	'
Discount	13	'
Carrying Amount	$487	'

Shareholders_Equity_Number_of_1

Shareholders' Equity - Number of Shares Issued and Outstanding and Carrying Amount of Preferred Stock (Parenthetical) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]	'	'
Par value of Preference shares issued and outstanding	$1	$1

Shareholders_Equity_Common_Sto

Shareholders' Equity - Common Stock Repurchased (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]	'	'	'
Common stock repurchased shares	65	59	22
Purchase of treasury stock	$2,336	$1,878	$550

Shareholders_Equity_Reconcilia

Shareholders' Equity - Reconciliation of Transactions Affecting Accumulated Other Comprehensive Income (Loss) Included in Shareholders' Equity (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Balance at beginning of period	($923)	($1,200)	($1,469)
Changes in unrealized gains and losses	-1,223	715	920
Changes in unrealized gains and losses, Unrealized Gains (Losses) on Derivative Hedges	37	-74	-343
Changes in unrealized gains and losses, Unrealized Gains (Losses) on Retirement Plans	590	-543	-464
Changes in unrealized gains and losses	-596	98	113
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	8	12	-25
Transfer of securities from available-for-sale to held-to-maturity	'	'	'
Foreign currency translation adjustment	-34	14	-16
Reclassification to earnings of realized gains and losses	373	325	363
Applicable income taxes	101	-172	-166
Balance at end of period	-1,071	-923	-1,200
Foreign Currency Translation [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Balance at beginning of period	-40	-49	-39
Changes in unrealized gains and losses	'	'	'
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	'	'	'
Transfer of securities from available-for-sale to held-to-maturity	'	'	'
Foreign currency translation adjustment	-34	14	-16
Reclassification to earnings of realized gains and losses	'	'	'
Applicable income taxes	14	-5	6
Balance at end of period	-60	-40	-49
Unrealized Gains (Losses) on Retirement Plans [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Balance at beginning of period	-1,265	-1,022	-803
Changes in unrealized gains and losses, Unrealized Gains (Losses) on Retirement Plans	590	-543	-464
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	'	'	'
Transfer of securities from available-for-sale to held-to-maturity	'	'	'
Foreign currency translation adjustment	'	'	'
Reclassification to earnings of realized gains and losses	249	150	110
Applicable income taxes	-317	150	135
Balance at end of period	-743	-1,265	-1,022
Unrealized Gains (Losses) on Derivative Hedges [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Balance at beginning of period	-404	-489	-414
Changes in unrealized gains and losses, Unrealized Gains (Losses) on Derivative Hedges	37	-74	-343
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	'	'	'
Transfer of securities from available-for-sale to held-to-maturity	'	'	'
Foreign currency translation adjustment	'	'	'
Reclassification to earnings of realized gains and losses	192	211	222
Applicable income taxes	-86	-52	46
Balance at end of period	-261	-404	-489
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	107	'	'
Changes in unrealized gains and losses	'	'	'
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	'	'	'
Transfer of securities from available-for-sale to held-to-maturity	'	224	'
Foreign currency translation adjustment	'	'	'
Reclassification to earnings of realized gains and losses	-59	-51	'
Applicable income taxes	22	-66	'
Balance at end of period	70	107	'
Unrealized Gains (Losses) on Securities Available-For-Sale [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Balance at beginning of period	679	360	-213
Changes in unrealized gains and losses	-1,223	715	920
Other-than-temporary impairment not recognized in earnings on securities available-for-sale	8	12	-25
Transfer of securities from available-for-sale to held-to-maturity	'	-224	'
Foreign currency translation adjustment	'	'	'
Reclassification to earnings of realized gains and losses	-9	15	31
Applicable income taxes	468	-199	-353
Balance at end of period	($77)	$679	$360

Shareholders_Equity_Impact_to_

Shareholders' Equity - Impact to Consolidated Statement of Income for Items Reclassified out of Accumulated Other Comprehensive Income and into Earnings (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'
Realized gains (losses) on sale of securities	$23	$59	$4
Amortization of unrealized gains on securities transferred from available-for-sale to held-to-maturity, Interest income	12,285	12,883	12,639
Gains (Losses) on derivative hedges	10,604	10,745	10,123
Actuarial gains (losses), prior service cost (credit) and transition obligation (asset) amortization	-1,140	-945	-845
Total securities gains (losses), net	9	-15	-31
Applicable income taxes	-2,032	-2,236	-1,841
Net income	5,732	5,490	4,788
Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'
Net income	-229	'	'
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	23	'	'
Other-than-temporary impairment recognized in earnings	-14	'	'
Total securities gains (losses), net	9	'	'
Applicable income taxes	-4	'	'
Net income	5	'	'
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	59	'	'
Applicable income taxes	-22	'	'
Net income	37	'	'
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]	'	'	'
Gains (Losses) on derivative hedges	-192	'	'
Applicable income taxes	74	'	'
Net income	-118	'	'
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	-249	'	'
Applicable income taxes	96	'	'
Net income	($153)	'	'

Shareholders_Equity_Components

Shareholders' Equity - Components of Company's Regulatory Capital (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Tier 1 Capital	'	'
Common shareholders' equity	$36,357	$34,229
Qualifying preferred stock	4,756	4,769
Noncontrolling interests, less preferred stock not eligible for Tier 1 capital	688	685
Less intangible assets	'	'
Goodwill (net of deferred tax liability)	-8,343	-8,351
Other disallowed intangible assets	-708	-829
Other	636	700
Total Tier 1 Capital	33,386	31,203
Tier 2 Capital	'	'
Eligible portion of allowance for credit losses	3,734	3,609
Eligible subordinated debt	2,299	2,953
Other	-79	15
Total Tier 2 Capital	5,954	6,577
Total Risk Based Capital	39,340	37,780
Risk-Weighted Assets	$297,919	$287,611

Earnings_Per_Share_Components_

Earnings Per Share - Components of Earnings Per Share (Detail) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'
Net income attributable to U.S. Bancorp	$5,836	$5,647	$4,872
Preferred dividends	-250	-238	-129
Impact of preferred stock redemption	-8	'	'
Earnings allocated to participating stock awards	-26	-26	-22
Net income applicable to U.S. Bancorp common shareholders	$5,552	$5,383	$4,721
Average common shares outstanding	1,839	1,887	1,914
Net effect of the exercise and assumed purchase of stock awards	10	9	9
Average diluted common shares outstanding	1,849	1,896	1,923
Earnings per common share	$3.02	$2.85	$2.47
Diluted earnings per common share	$3	$2.84	$2.46

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail) (Stock Option [Member])	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Option [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Options outstanding of common shares	5	22	54

Employee_Benefits_Additional_I

Employee Benefits - Additional Information (Detail) (USD $)

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Passive global equities [Member]

Passive global equities [Member]

Active global equities [Member]

Active global equities [Member]

Mid Small Cap Equity Securities [Member]

Mid Small Cap Equity Securities [Member]

Emerging markets equities [Member]

Emerging markets equities [Member]

Real estate equity securities [Member]

Real estate equity securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Hedge funds [Member]

Private equity securities [Member]

Non qualified pension plans [Member]

Qualified pension plans [Member]

Qualified pension plans [Member]

Qualified pension plans [Member]

Postretirement Welfare Plan [Member]

Postretirement Welfare Plan [Member]

Postretirement Welfare Plan [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

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

$118

$111

$103

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting service period for defined benefit pension plan

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company contributions to pension and postretirement welfare plan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20

296

35

185

1

1

9

Decrease in Postretirement Welfare Plan Benefit Obligation Due To Plan Amendment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-35

'

'

Asset allocation for the company's qualified pension plan

'

'

'

35.00%

35.00%

8.00%

25.00%

7.00%

10.00%

5.00%

5.00%

5.00%

5.00%

30.00%

20.00%

5.00%

5.00%

'

'

'

'

'

'

'

Plan assets of the qualified pension plans that have asset management arrangements with related parties

119

168

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash collateral for borrowed securities

'

14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Obligation to return cash collateral

'

$20

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee_Benefits_Summary_of_C

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 $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Benefit obligation at beginning of measurement period	$4,096	$3,261	'
Service cost	168	129	119
Interest cost	170	168	169
Participants' contributions	'	'	'
Plan amendments	'	'	'
Actuarial loss (gain)	-388	681	'
Lump sum settlements	-34	-33	'
Benefit payments	-117	-110	'
Federal subsidy on benefits paid	'	'	'
Benefit obligation at end of measurement period	3,895	4,096	3,261
Balance at beginning of period	2,321	2,103	'
Actual return on plan assets	343	305	'
Employer contributions	318	56	'
Participants' contributions	'	'	'
Lump sum settlements	-34	-33	'
Benefit payments	-117	-110	'
Balance at end of period	2,831	2,321	2,103
Funded (Unfunded) Status	-1,064	-1,775	'
Current benefit liability	-20	-23	'
Noncurrent benefit liability	-1,044	-1,752	'
Recognized amount	-1,064	-1,775	'
Net actuarial gain (loss)	-1,333	-2,152	'
Net prior service credit (cost)	16	21	'
Recognized amount	-1,317	-2,131	'
Postretirement Welfare Plan [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Benefit obligation at beginning of measurement period	142	170	'
Service cost	3	5	4
Interest cost	4	7	9
Participants' contributions	10	10	'
Plan amendments	-35	'	'
Actuarial loss (gain)	-2	-26	'
Lump sum settlements	'	'	'
Benefit payments	-24	-26	'
Federal subsidy on benefits paid	2	2	'
Benefit obligation at end of measurement period	100	142	170
Balance at beginning of period	105	120	'
Actual return on plan assets	'	'	'
Employer contributions	1	1	'
Participants' contributions	10	10	'
Lump sum settlements	'	'	'
Benefit payments	-24	-26	'
Balance at end of period	92	105	120
Funded (Unfunded) Status	-8	-37	'
Current benefit liability	'	'	'
Noncurrent benefit liability	-8	-37	'
Recognized amount	-8	-37	'
Net actuarial gain (loss)	75	84	'
Net prior service credit (cost)	34	'	'
Recognized amount	$109	$84	'

Employee_Benefits_Summary_of_C1

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) (Pension Plans [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Billions, unless otherwise specified
Pension Plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Accumulated benefit obligation for all pension plans	$3.60	$3.80

Employee_Benefits_Pension_Plan

Employee Benefits - Pension Plans with Benefit Obligations in Excess of Plan Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Pension Plans with Projected Benefit Obligations in Excess of Plan Assets	'	'
Projected benefit obligation	$3,853	$4,096
Fair value of plan assets	2,787	2,321
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets	'	'
Projected benefit obligation	3,853	4,096
Accumulated benefit obligation	3,566	3,776
Fair value of plan assets	$2,787	$2,321

Employee_Benefits_Components_o

Employee Benefits - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans [Member]	'	'	'
Components Of Net Periodic Benefit Cost	'	'	'
Service cost	$168	$129	$119
Interest cost	170	168	169
Expected return on plan assets	-176	-191	-207
Prior service cost (credit) and transition obligation (asset) amortization	-5	-4	-9
Actuarial loss (gain) amortization	264	161	125
Net periodic benefit cost	421	263	197
Net actuarial gain (loss) arising during the year	555	-567	-474
Net actuarial loss (gain) amortized during the year	264	161	125
Net prior service credit (cost) arising during the year	'	'	'
Net prior service cost (credit) and transition obligation (asset) amortized during the year	-5	-4	-9
Total recognized in other comprehensive income (loss)	814	-410	-358
Total recognized in net periodic benefit cost and other comprehensive income (loss)	393	-673	-555
Postretirement Welfare Plan [Member]	'	'	'
Components Of Net Periodic Benefit Cost	'	'	'
Service cost	3	5	4
Interest cost	4	7	9
Expected return on plan assets	-2	-2	-5
Prior service cost (credit) and transition obligation (asset) amortization	-1	'	'
Actuarial loss (gain) amortization	-9	-7	-6
Net periodic benefit cost	-5	3	2
Net actuarial gain (loss) arising during the year	'	24	10
Net actuarial loss (gain) amortized during the year	-9	-7	-6
Net prior service credit (cost) arising during the year	35	'	'
Net prior service cost (credit) and transition obligation (asset) amortized during the year	-1	'	'
Total recognized in other comprehensive income (loss)	25	17	4
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$30	$14	$2

Employee_Benefits_Components_o1

Employee Benefits - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Pension Plans [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Pre tax Estimated net loss/gain that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost	$158
Pre tax estimated prior service cost for pension plan that will be amortized from accumulated other comprehensive income loss into net periodic benefit cost	-5
Postretirement Welfare Plan [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Pre tax Estimated net loss/gain that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost	-6
Pre tax estimated prior service cost for pension plan that will be amortized from accumulated other comprehensive income loss into net periodic benefit cost	($3)

Employee_Benefits_Weighted_Ave

Employee Benefits - Weighted Average Assumptions to Determine Projected Benefit Obligations (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Effect on accumulated postretirement benefit obligation	'	'
One percent increase	$5	$5
One percent decrease	($4)	($5)
Pension Plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Discount rate	4.97%	4.07%
Rate of compensation increase	4.02%	4.08%
Postretirement Welfare Plan [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Discount rate	3.93%	3.10%
Rate of compensation increase	'	'
Projected Benefit Obligation Assumptions [Member]	'	'
Health care cost trend rate for the next year	'	'
Health care cost trend rate assumed for next fiscal year	7.50%	8.00%

Employee_Benefits_Weighted_Ave1

Employee Benefits - Weighted Average Assumptions to Determine Projected Benefit Obligations (Parenthetical) (Detail) (Projected Benefit Obligation Assumptions [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]	'	'
Assumed rate decrease	5.00%	'
Health care cost trend rate to decrease Period	'2019	'
Postretirement Welfare Plan [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Assumed plan duration	'6 years 4 months 24 days	'7 years 2 months 12 days
Qualified pension plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Assumed plan duration	'14 years 7 months 6 days	'15 years 10 months 12 days
Non qualified pension plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Assumed plan duration	'11 years 6 months	'12 years 2 months 12 days

Employee_Benefits_Weighted_Ave2

Employee Benefits - Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Health care cost trend rate	'	'	'
One percent increase	'	'	'
One percent decrease	'	'	'
Pension Plans [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Discount rate	4.07%	5.07%	5.66%
Expected return on plan assets	7.50%	8.00%	8.25%
Rate of compensation increase	4.08%	4.05%	4.02%
Postretirement Welfare Plan [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Discount rate	3.10%	4.30%	4.90%
Expected return on plan assets	1.50%	2.25%	3.50%
Rate of compensation increase	'	'	'
Prior to age 65 [Member] | Net Periodic Benefit Cost Assumptions [Member]	'	'	'
Health care cost trend rate	'	'	'
Health care cost trend rate	8.00%	8.00%	8.00%
After age 65 [Member] | Net Periodic Benefit Cost Assumptions [Member]	'	'	'
Health care cost trend rate	'	'	'
Health care cost trend rate	8.00%	12.00%	14.00%

Employee_Benefits_Weighted_Ave3

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, 2013	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013
	Debt Securities [Member]	Debt Securities [Member]	Postretirement Welfare Plan [Member]	Postretirement Welfare Plan [Member]	Qualified pension plans [Member]	Qualified pension plans [Member]	Non qualified pension plans [Member]	Non qualified pension plans [Member]	Prior to age 65 [Member]	After age 65 [Member]
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'	'	'	'	'
Assumed plan duration	'	'	'7 years 2 months 12 days	'7 years 8 months 12 days	'15 years 10 months 24 days	'14 years 9 months 18 days	'12 years 2 months 12 days	'11 years 4 months 24 days	'	'
Debt securities target asset allocation	30.00%	10.00%	'	'	'	'	'	'	'	'
Assumed rate decrease	'	'	'	'	'	'	'	'	5.00%	5.00%
Health care cost trend rate to decrease Period	'	'	'	'	'	'	'	'	'2019	'2019

Employee_Benefits_Summary_of_P

Employee Benefits - Summary of Plan Investment Assets Measured at Fair Value (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Level 3 [Member] | Debt Securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	'	$7	$7	$8
Level 3 [Member] | Hedge funds [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	103	'	'	'
Level 3 [Member] | Other [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	4	3	6	6
Pension Plans [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	2,831	2,321	2,103	'
Pension Plans [Member] | Level 1 [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	1,010	1,135	'	'
Pension Plans [Member] | Level 1 [Member] | Cash and cash equivalents [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	62	119	'	'
Pension Plans [Member] | Level 1 [Member] | Debt Securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	217	151	'	'
Pension Plans [Member] | Level 1 [Member] | Domestic equity securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	217	275	'	'
Pension Plans [Member] | Level 1 [Member] | Mid Small Cap Equity Securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	148	173	'	'
Pension Plans [Member] | Level 1 [Member] | International equity securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	229	285	'	'
Pension Plans [Member] | Level 1 [Member] | Real estate equity securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	137	132	'	'
Pension Plans [Member] | Level 2 [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	1,714	1,196	'	'
Pension Plans [Member] | Level 2 [Member] | Debt Securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	343	114	'	'
Pension Plans [Member] | Level 2 [Member] | Collective investment funds domestic equity securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	538	400	'	'
Pension Plans [Member] | Level 2 [Member] | Collective investment fund mid-small cap equity securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	58	59	'	'
Pension Plans [Member] | Level 2 [Member] | Collective investment fund emerging markets equity securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	58	61	'	'
Pension Plans [Member] | Level 2 [Member] | Collective investment funds international equity securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	472	362	'	'
Pension Plans [Member] | Level 2 [Member] | Money market [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	'	7	'	'
Pension Plans [Member] | Level 2 [Member] | Debt securities mutual funds [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	177	129	'	'
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	75	71	'	'
Pension Plans [Member] | Level 2 [Member] | Other [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	-7	-7	'	'
Pension Plans [Member] | Level 3 [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	107	10	'	'
Pension Plans [Member] | Level 3 [Member] | Debt Securities [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	'	7	'	'
Pension Plans [Member] | Level 3 [Member] | Hedge funds [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	103	'	'	'
Pension Plans [Member] | Level 3 [Member] | Other [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	4	3	'	'
Postretirement Welfare Plan [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	92	105	120	'
Postretirement Welfare Plan [Member] | Level 1 [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	92	105	'	'
Postretirement Welfare Plan [Member] | Level 1 [Member] | Cash and cash equivalents [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Plan assets measured at fair value	$92	$105	'	'

Employee_Benefits_Summary_of_P1

Employee Benefits - Summary of Plan Investment Assets Measured at Fair Value (Parenthetical) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]	'	'
Obligation to return cash collateral	'	$20
Mid Small Cap Equity Securities [Member] | Level 1 [Member] | Domestic equity securities [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Plan assets measured at fair value	141	164
Mid Small Cap Equity Securities [Member] | Level 1 [Member] | International equity securities [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Plan assets measured at fair value	7	9
Real estate equity securities [Member] | Level 1 [Member] | Domestic equity securities [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Plan assets measured at fair value	67	66
Real estate equity securities [Member] | Level 1 [Member] | International equity securities [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Plan assets measured at fair value	70	66
Collective investment fund mid-small cap equity securities [Member] | Level 2 [Member] | Domestic equity securities [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Plan assets measured at fair value	26	24
Collective investment fund mid-small cap equity securities [Member] | Level 2 [Member] | International equity securities [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Plan assets measured at fair value	22	16
Collective investment fund mid-small cap equity securities [Member] | Level 2 [Member] | Cash and cash equivalents [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Plan assets measured at fair value	$10	$19

Employee_Benefits_Summarizes_C

Employee Benefits - Summarizes Changes for All Plan investment Assets Measured at Fair Value Using Significant Unobservable Inputs (Level 3) (Detail) (Level 3 [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Balance at beginning of period	$7	$7	$8
Unrealized gains (losses) relating to assets still held at end of year	'	1	'
Purchases, sales, and settlements, net	-7	-1	-1
Balance at end of period	'	7	7
Hedge funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Purchases, sales, and settlements, net	103	'	'
Balance at end of period	103	'	'
Other [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Balance at beginning of period	3	6	6
Unrealized gains (losses) relating to assets still held at end of year	'	-2	-9
Purchases, sales, and settlements, net	1	-1	9
Balance at end of period	$4	$3	$6

Employee_Benefits_Expected_Fut

Employee Benefits - Expected Future Benefit Payments (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Pension Plans [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	$169
2015	177
2016	189
2017	200
2018	205
2019 - 2023	1,205
Postretirement Welfare Plan [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	15
2015	14
2016	13
2017	12
2018	11
2019 - 2023	44
Medicare Part D Subsidy [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	2
2015	2
2016	2
2017	2
2018	2
2019 - 2023	$8

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Exercisable years from the date of grant	'10 years	'	'
Shares available for grant under various plans (subject to adjustment for forfeitures)	54	'	'
Fair value of shares vested	$127	$86	$72
Stock-based compensation expense	129	129	118
Stock-based compensation after tax basis	80	80	73
Unrecognized compensation cost related to nonvested share-based arrangements granted under plans	$142	'	'
Cost expected to be recognized over a weighted-average period as compensation expense	'2 years 4 months 24 days	'	'
Minimum [Member]	'	'	'
Stock and unit awards vesting years	'3 years	'	'
Maximum [Member]	'	'	'
Stock and unit awards vesting years	'5 years	'	'

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Stock Options Outstanding and Exercised Under Various Stock Options Plans (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Stock Options Outstanding at Beginning of the Period, Shares	63,171,918	75,823,941	85,622,705
Stock Options Granted, Shares	1,168,011	4,180,492	4,063,369
Stock Options Exercised, Shares	-17,260,740	-15,681,323	-8,508,107
Stock Options Cancelled, Shares	-354,424	-1,151,192	-5,354,026
Stock Options Outstanding at End of the Period, Shares	46,724,765	63,171,918	75,823,941
Stock Options Exercisable at End of Period, Shares	39,556,000	50,671,654	57,039,334
Weighted-Average Exercise Price Outstanding at Beginning of the Period	$28.83	$27.60	$26.80
Weighted Average Exercise Price Granted	$33.99	$28.65	$28.66
Weighted-Average Exercise Price Exercised	$28.41	$23.12	$19.49
Weighted-Average Exercise Price Cancelled	$29.22	$24.90	$28.44
Weighted-Average Exercise Price Outstanding at End of the Period	$29.12	$28.83	$27.60
Weighted-Average Exercise Price Exercisable	$29.19	$30.12	$29.14
Weighted Average Remaining Contractual Term, Outstanding at the End of the Period	'4 years 4 months 24 days	'4 years 10 months 24 days	'5 years 2 months 12 days
Weighted Average Remaining Contractual Term, Exercisable	'3 years 9 months 18 days	'4 years 2 months 12 days	'4 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding	$527	$196	($42)
Aggregate Intrinsic Value, Exercisable	$444	$92	($120)

StockBased_Compensation_Weight

Stock-Based Compensation - Weighted Average Estimated Fair Value and Assumptions Utilized by Company for Newly Issued Grants (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Estimated fair value	$12.13	$10.19	$10.55
Risk-free interest rates	1.00%	0.90%	2.50%
Dividend yield	2.60%	2.60%	2.50%
Stock volatility factor	0.49%	0.49%	0.47%
Expected life of options (in years)	'5 years 6 months	'5 years 6 months	'5 years 6 months

StockBased_Compensation_Summar1

Stock-Based Compensation - Summary of Certain Stock Option Activity of Company (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Fair value of options vested	$41	$49	$54
Intrinsic value of options exercised	144	143	61
Cash received from options exercised	489	362	165
Tax benefit realized from options exercised	$56	$75	$23

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Options Outstanding Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Outstanding Options, Shares	46,724,765
Outstanding Options, Weighted average remaining contractual Life (Years)	'4 years 4 months 24 days
Outstanding Options, Weighted Average Exercise Price	$29.12
Exercisable Options, Shares	39,556,000
Exercisable Options, Weighted Average Exercise Price	$29.19
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	4,661,087
Outstanding Options, Weighted average remaining contractual Life (Years)	'5 years 1 month 6 days
Outstanding Options, Weighted Average Exercise Price	$11.39
Exercisable Options, Shares	4,661,087
Exercisable Options, Weighted Average Exercise Price	$11.40
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	167,391
Outstanding Options, Weighted average remaining contractual Life (Years)	'2 years 4 months 24 days
Outstanding Options, Weighted Average Exercise Price	$19.54
Exercisable Options, Shares	167,391
Exercisable Options, Weighted Average Exercise Price	$19.54
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	3,390,179
Outstanding Options, Weighted average remaining contractual Life (Years)	'6 years 2 months 12 days
Outstanding Options, Weighted Average Exercise Price	$23.85
Exercisable Options, Shares	2,216,001
Exercisable Options, Weighted Average Exercise Price	$23.84
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	13,108,918
Outstanding Options, Weighted average remaining contractual Life (Years)	'5 years 2 months 12 days
Outstanding Options, Weighted Average Exercise Price	$29.05
Exercisable Options, Shares	8,276,837
Exercisable Options, Weighted Average Exercise Price	$29.29
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	17,999,955
Outstanding Options, Weighted average remaining contractual Life (Years)	'3 years 10 months 24 days
Outstanding Options, Weighted Average Exercise Price	$31.97
Exercisable Options, Shares	16,837,858
Exercisable Options, Weighted Average Exercise Price	$31.83
Exercise Prices Range $35.01-$36.25 [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	$36.25
Outstanding Options, Shares	7,397,235
Outstanding Options, Weighted average remaining contractual Life (Years)	'3 years 1 month 6 days
Outstanding Options, Weighted Average Exercise Price	$36.07
Exercisable Options, Shares	7,396,826
Exercisable Options, Weighted Average Exercise Price	$36.07

StockBased_Compensation_Summar2

Stock-Based Compensation - Summary of Status of Company's Restricted Shares of Stock and Unit Awards (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Outstanding at beginning of period, shares	8,935,743	8,995,295	8,811,027
Granted, shares	3,717,635	3,085,077	3,136,086
Vested, shares	-3,744,411	-2,931,820	-2,552,979
Cancelled, shares	-255,108	-212,809	-398,839
Outstanding at end of period, shares	8,653,859	8,935,743	8,995,295
Outstanding at beginning of period, weighted average grant-date fair value	$25.04	$22.46	$19.74
Granted, weighted average grant-date fair value	$33.88	$28.70	$28.20
Vested, weighted average grant-date fair value	$22.17	$20.97	$20.15
Cancelled, weighted average grant-date fair value	$29.18	$25.01	$22.20
Outstanding at end of period, weighted average grant-date fair value	$29.96	$25.04	$22.46

Income_Taxes_Components_of_Inc

Income Taxes - Components of Income Tax Expense (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal	'	'	'
Current	$1,885	$1,853	$907
Deferred	-83	45	689
Federal income tax	1,802	1,898	1,596
State	'	'	'
Current	216	334	186
Deferred	14	4	59
State income tax	230	338	245
Applicable income taxes	$2,032	$2,236	$1,841

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes Additional Information [Abstract]	'	'	'
Federal statutory rate	35.00%	'	'
Unrecognized tax positions that would impact the effective tax rate	$181	$240	$220
Unrecognized tax positions as a component of income taxes expense, accrued interest	27	'	'
Unrecognized tax positions as a component of income taxes expenses, recognized in interest	-12	-8	-2
Federal, state and foreign net operating loss carryforwards	579	'	'
Federal, state and foreign net operating loss carryforwards expiration term	31-Dec-33	'	'
Base year reserves included in retained earnings of acquired thrift institutions	$102	'	'

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Expected Income Tax Expense at Federal Statutory Rate of 35 Percent to Company's Applicable Income Tax Expense (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Tax at statutory rate	$2,717	$2,704	$2,320
State income tax, at statutory rates, net of federal tax benefit	150	220	159
Tax effect of	'	'	'
Tax credits, net of related expenses	-648	-479	-458
Tax-exempt income	-212	-219	-226
Noncontrolling interests	37	55	29
Other items	-12	-45	17
Applicable income taxes	$2,032	$2,236	$1,841

Income_Taxes_Reconciliation_of1

Income Taxes - Reconciliation of Expected Income Tax Expense at Federal Statutory Rate of 35 Percent to Company's Applicable Income Tax Expense (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Tax credits recognized as reduction to related investment asset	$473

Income_Taxes_Reconciliation_of2

Income Taxes - Reconciliation of Changes in Federal, State and Foreign Unrecognized Tax Position Balances (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Uncertainties [Abstract]	'	'	'
Balance at beginning of period	$302	$479	$532
Additions for tax positions taken in prior years	44	73	24
Additions for tax positions taken in the current year	'	5	2
Exam resolutions	-56	-245	-70
Statute expirations	-26	-10	-9
Balance at end of period	$264	$302	$479

Income_Taxes_Significant_Compo

Income Taxes - Significant Components of Company's Net Deferred Tax Asset (Liability) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Deferred Tax Assets	'	'
Allowance for credit losses	$1,722	$1,756
Accrued expenses	485	476
Pension and postretirement benefits	277	523
Securities available-for-sale and financial instruments	172	'
Stock compensation	165	183
Federal, state and foreign net operating loss carryforwards	72	60
Partnerships and other investment assets	646	395
Other deferred tax assets, net	179	180
Gross deferred tax assets	3,718	3,573
Deferred Tax Liabilities	'	'
Leasing activities	-2,872	-2,792
Mortgage servicing rights	-835	-490
Goodwill and other intangible assets	-666	-565
Loans	-211	-168
Fixed assets	-147	-201
Securities available-for-sale and financial instruments	'	-232
Other deferred tax liabilities, net	-210	-361
Gross deferred tax liabilities	-4,941	-4,809
Valuation allowance	-82	-84
Net Deferred Tax Asset (Liability)	($1,305)	($1,320)

Derivative_Instruments_Additio

Derivative Instruments - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
			Scenario, Forecast [Member]
Derivative [Line Items]	'	'	'
Realized and unrealized losses on derivatives classified as cash flow hedges recorded in other comprehensive income (loss)	$261,000,000	$404,000,000	'
Estimated loss to be reclassified from other comprehensive income (loss) into earnings for next 12 months	'	'	117,000,000
Forward commitments to sell mortgage loans	5,300,000,000	'	'
Hedged mortgage loans held for sale	2,800,000,000	'	'
Unfunded mortgage loan commitments	3,100,000,000	'	'
Fair value of derivatives under collateral agreements in a net liability position	1,000,000,000	'	'
Collateral posted by company netted against net liability position	$792,000,000	'	'

Derivative_Instruments_Asset_a

Derivative Instruments - Asset and Liability Management Derivative Positions of Company (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]	'	'
Fair Value, Assets	$1,349	$1,546
Fair Value, Liabilities	1,598	2,178
Asset and Liability Management Positions [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	28,119	35,234
Fair Value, Assets	189	363
Notional Value, Liabilities	14,730	26,808
Fair Value, Liabilities	580	818
Asset and Liability Management Positions [Member] | Fair Value Hedges [Member] | Interest Rate Contracts [Member] | Receive Fixed/Pay Floating Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	500	500
Fair Value, Assets	22	30
Derivative Asset Average Remaining Maturity Period	'2 years 1 month 2 days	'3 years 1 month 2 days
Notional Value, Liabilities	'	'
Fair Value, Liabilities	'	'
Derivative Liability Average Remaining Maturity Period	'	'
Asset and Liability Management Positions [Member] | Cash Flow Hedges [Member] | Interest Rate Contracts [Member] | Receive Fixed/Pay Floating Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	7,000	7,000
Fair Value, Assets	26	45
Derivative Asset Average Remaining Maturity Period	'10 months 2 days	'1 year 10 months 2 days
Notional Value, Liabilities	'	'
Fair Value, Liabilities	'	'
Derivative Liability Average Remaining Maturity Period	'	'
Asset and Liability Management Positions [Member] | Cash Flow Hedges [Member] | Interest Rate Contracts [Member] | Pay Fixed/Receive Floating Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	772	32
Fair Value, Assets	26	'
Derivative Asset Average Remaining Maturity Period	'6 years 3 months	'9 years 10 months 17 days
Notional Value, Liabilities	4,288	4,528
Fair Value, Liabilities	498	718
Derivative Liability Average Remaining Maturity Period	'2 years 5 months 16 days	'3 years 9 months 15 days
Asset and Liability Management Positions [Member] | Net Investment Hedges [Member] | Foreign Exchange Forward Contracts [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	'	758
Fair Value, Assets	'	1
Derivative Asset Average Remaining Maturity Period	'	'26 days
Notional Value, Liabilities	1,056	'
Fair Value, Liabilities	4	'
Derivative Liability Average Remaining Maturity Period	'15 days	'
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Receive Fixed/Pay Floating Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	'	350
Fair Value, Assets	'	1
Derivative Asset Average Remaining Maturity Period	'	'10 years 2 months 16 days
Notional Value, Liabilities	3,540	3,775
Fair Value, Liabilities	56	14
Derivative Liability Average Remaining Maturity Period	'10 years 2 months 19 days	'10 years 2 months 16 days
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Futures and Forwards [Member] | Purchased [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	2,310	11,164
Fair Value, Assets	9	138
Derivative Asset Average Remaining Maturity Period	'26 days	'26 days
Notional Value, Liabilities	1,025	2,921
Fair Value, Liabilities	7	13
Derivative Liability Average Remaining Maturity Period	'22 days	'15 days
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Futures and Forwards [Member] | Written [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	5,234	6,299
Fair Value, Assets	58	18
Derivative Asset Average Remaining Maturity Period	'29 days	'1 month 10 days
Notional Value, Liabilities	346	12,223
Fair Value, Liabilities	4	57
Derivative Liability Average Remaining Maturity Period	'2 months 1 day	'1 month 2 days
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Options [Member] | Purchased [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	2,300	2,435
Fair Value, Assets	'	'
Derivative Asset Average Remaining Maturity Period	'26 days	'26 days
Notional Value, Liabilities	'	'
Fair Value, Liabilities	'	'
Derivative Liability Average Remaining Maturity Period	'	'
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Interest Rate Contracts [Member] | Options [Member] | Written [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	1,902	4,991
Fair Value, Assets	17	123
Derivative Asset Average Remaining Maturity Period	'26 days	'1 month 13 days
Notional Value, Liabilities	2	4
Fair Value, Liabilities	'	'
Derivative Liability Average Remaining Maturity Period	'29 days	'22 days
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Foreign Exchange Forward Contracts [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	6,813	618
Fair Value, Assets	24	4
Derivative Asset Average Remaining Maturity Period	'7 days	'11 days
Notional Value, Liabilities	2,121	1,383
Fair Value, Liabilities	4	6
Derivative Liability Average Remaining Maturity Period	'7 days	'4 days
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Equity Contracts [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	79	31
Fair Value, Assets	3	'
Derivative Asset Average Remaining Maturity Period	'1 year 7 months 13 days	'2 years 9 months 18 days
Notional Value, Liabilities	'	27
Fair Value, Liabilities	'	'
Derivative Liability Average Remaining Maturity Period	'	'2 years 5 months 16 days
Asset and Liability Management Positions [Member] | Other Economic Hedges [Member] | Credit Contracts [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	1,209	1,056
Fair Value, Assets	4	3
Derivative Asset Average Remaining Maturity Period	'4 years 15 days	'4 years 6 months 22 days
Notional Value, Liabilities	2,352	1,947
Fair Value, Liabilities	$7	$10
Derivative Liability Average Remaining Maturity Period	'3 years 29 days	'3 years 1 month 10 days

Derivative_Instruments_Custome

Derivative Instruments - Customer-Related Derivative Positions of Company (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]	'	'
Fair Value, Assets	$1,349	$1,546
Fair Value, Liabilities	1,598	2,178
Customer-Related Positions [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	33,286	33,440
Fair Value, Assets	1,215	1,443
Notional Value, Liabilities	33,480	33,013
Fair Value, Liabilities	1,137	1,365
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Receive Fixed/Pay Floating Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	11,717	16,671
Fair Value, Assets	600	1,085
Derivative Asset Average Remaining Maturity Period	'5 years 1 month 10 days	'4 years 9 months 11 days
Notional Value, Liabilities	7,291	1,090
Fair Value, Liabilities	106	15
Derivative Liability Average Remaining Maturity Period	'5 years 6 months 26 days	'9 years 3 months 18 days
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Pay Fixed/Receive Floating Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	6,746	928
Fair Value, Assets	114	14
Derivative Asset Average Remaining Maturity Period	'6 years 11 days	'11 years 1 month 13 days
Notional Value, Liabilities	12,361	16,923
Fair Value, Liabilities	560	1,042
Derivative Liability Average Remaining Maturity Period	'4 years 10 months 24 days	'4 years 8 months 27 days
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Options [Member] | Purchased [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	3,489	3,046
Fair Value, Assets	33	16
Derivative Asset Average Remaining Maturity Period	'4 years 6 months 11 days	'5 years 2 months 27 days
Notional Value, Liabilities	'	28
Fair Value, Liabilities	'	'
Derivative Liability Average Remaining Maturity Period	'	'4 years 5 months 1 day
Customer-Related Positions [Member] | Interest Rate Contracts [Member] | Options [Member] | Written [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	'	286
Fair Value, Assets	'	'
Derivative Asset Average Remaining Maturity Period	'	'9 months
Notional Value, Liabilities	3,489	2,788
Fair Value, Liabilities	33	16
Derivative Liability Average Remaining Maturity Period	'4 years 6 months 11 days	'5 years 8 months 5 days
Customer-Related Positions [Member] | Foreign Exchange Rate Contracts [Member] | Options [Member] | Purchased [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	364	323
Fair Value, Assets	11	6
Derivative Asset Average Remaining Maturity Period	'6 months 11 days	'6 months 18 days
Notional Value, Liabilities	'	'
Fair Value, Liabilities	'	'
Derivative Liability Average Remaining Maturity Period	'	'
Customer-Related Positions [Member] | Foreign Exchange Rate Contracts [Member] | Options [Member] | Written [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	'	'
Fair Value, Assets	'	'
Derivative Asset Average Remaining Maturity Period	'	'
Notional Value, Liabilities	364	323
Fair Value, Liabilities	11	6
Derivative Liability Average Remaining Maturity Period	'6 months 11 days	'6 months 18 days
Customer-Related Positions [Member] | Foreign Exchange Rate Contracts [Member] | Forwards, Spots and Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Value, Assets	10,970	12,186
Fair Value, Assets	457	322
Derivative Asset Average Remaining Maturity Period	'7 months 2 days	'5 months 5 days
Notional Value, Liabilities	9,975	11,861
Fair Value, Liabilities	$427	$286
Derivative Liability Average Remaining Maturity Period	'7 months 13 days	'5 months 9 days

Derivative_Instruments_Summary

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 $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
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	$25	($46)	($213)
Derivative Instruments, Gains (Losses) Reclassified from Other Comprehensive Income (Loss) into Earnings	-118	-131	-138
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	-45	-19	34
Derivative Instruments, Gains (Losses) Reclassified from Other Comprehensive Income (Loss) into Earnings	'	'	'
Net Investment Hedges [Member] | Non-derivative Debt Instruments [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Derivative Instruments, Gain (Losses) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	'	20	'
Derivative Instruments, Gains (Losses) Reclassified from Other Comprehensive Income (Loss) into Earnings	'	'	'

Derivative_Instruments_Summary1

Derivative Instruments - Summary of Gains (Losses) Recognized in Earnings for Fair Value Hedges, Other Economic Hedges and Customer-Related Positions (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
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	($9)	$3	($36)
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	615	437	23
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	243	854	456
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	-322	175	518
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	'	'	1
Asset and Liability Management Positions [Member] | Foreign Exchange Cross-Currency Swaps [Member] | Other noninterest income [Member] | Fair Value Hedges [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains (losses) recognized in earnings	'	42	-69
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	49	-63	-81
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	2	2	1
Asset and Liability Management Positions [Member] | Credit Contracts [Member] | Other noninterest income/expense [Member] | Other Economic Hedges [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains (losses) recognized in earnings	6	-8	'
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	-361	-118	302
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	378	124	-317
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	$51	$50	$53

Derivative_Instruments_Summary2

Derivative Instruments - Summary of Gains (Losses) Recognized in Earnings for Fair Value Hedges, Other Economic Hedges and Customer-Related Positions (Parenthetical) (Detail) (Asset and Liability Management Positions [Member], Fair Value Hedges [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest Rate Contracts [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gain losses on items hedged by fair value hedges	$8	($3)	$29
Foreign Exchange Cross-Currency Swaps [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gain losses on items hedged by fair value hedges	$0	($44)	$72

Netting_Arrangements_for_Certa2

Netting Arrangements for Certain Financial Instruments - Additional Information (Detail) (USD $)	Dec. 31, 2013
In Billions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'
Notional amount of derivative	$109.60
Exchange Cleared [Member]	'
Derivatives, Fair Value [Line Items]	'
Notional amount of derivative	8.3
Exchange Traded [Member]	'
Derivatives, Fair Value [Line Items]	'
Notional amount of derivative	$3.60

Netting_Arrangements_for_Certa3

Netting Arrangements for Certain Financial Instruments - Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet But Available for Offset in Event of Default (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Offsetting [Abstract]	'	'
Derivative assets Gross Recognized Assets	$1,349	$1,546
Reverse repurchase agreements Gross Recognized Assets	87	363
Securities borrowed Gross Recognized Assets	723	368
Total Gross Recognized Assets	2,159	2,277
Derivative assets Gross amounts assets offset in consolidated balance sheet	-599	-418
Total Gross amounts assets offset in consolidated balance sheet	-599	-418
Derivative assets Net Amounts Presented in the Consolidated Balance Sheet	750	1,128
Reverse repurchase agreements Net Amounts Presented in the Consolidated Balance Sheet	87	363
Securities borrowed Net Amounts Presented in the Consolidated Balance Sheet	723	368
Total Net Amounts Presented in the Consolidated Balance Sheet	1,560	1,859
Derivative assets Gross Amounts Not Offset Consolidated Balance Financial Instruments	-21	-148
Reverse repurchase agreements Gross financial instrument asset amounts not offset in consolidated balance sheet	-59	-44
Securities borrowed Gross financial instrument asset amounts not offset in consolidated balance sheet	'	'
Total Gross financial instrument asset amounts not offset in consolidated balance sheet	-80	-192
Reverse repurchase agreements Gross collateral received amounts not offset in consolidated balance sheet	-28	-319
Securities borrowed Gross collateral received amounts not offset in consolidated balance sheet	-698	-356
Total Gross collateral received amounts not offset in consolidated balance sheet	-726	-675
Derivative assets Net Amount	729	980
Reverse repurchase agreements Net Amount	'	'
Securities borrowed Net Amount	25	12
Total Net Amount Assets	754	992
Derivative liabilities Gross recognized liabilities	1,598	2,178
Repurchase agreements Gross recognized liabilities	2,059	3,389
Securities loaned Gross recognized liabilities	'	'
Total Gross recognized liabilities	3,657	5,567
Derivative liabilities Gross amounts liabilities offset in consolidated balance sheet	-1,192	-1,549
Total Gross amounts liabilities offset in consolidated balance sheet	-1,192	-1,549
Derivative liabilities Net amounts liabilities presented in consolidated balance sheet	406	629
Repurchase agreements Net amounts liabilities presented in consolidated balance sheet	2,059	3,389
Securities loaned Net amounts liabilities presented in consolidated balance sheet	'	'
Total Net amounts liabilities presented in consolidated balance sheet	2,465	4,018
Derivative liabilities Gross financial instrument liability amounts not offset in consolidated balance sheet	-21	-148
Repurchase agreements Gross financial instrument liability amounts not offset in consolidated balance sheet	-59	-44
Securities loaned Gross financial instruments not offset in consolidated balance sheet	'	'
Total Gross financial instrument liability amounts not offset in consolidated balance sheet	-80	-192
Repurchase agreements Gross collateral pledged amounts not offset in consolidated balance sheet	-2,000	-3,345
Securities loaned Gross collateral pledged amounts not offset in consolidated balance sheet	'	'
Total Gross collateral pledged amounts not offset in consolidated balance sheet	-2,000	-3,345
Derivative liabilities Net Amount	385	481
Repurchase agreements Net Amount	'	'
Securities loaned net Amount	'	'
Total Net Amount Liabilities	$385	$481

Netting_Arrangements_for_Certa4

Netting Arrangements for Certain Financial Instruments - Information on Company's Accounting Netting Adjustments and Items Not Offset in Consolidated Balance Sheet But Available for Offset in Event of Default (Parenthetical) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Offsetting [Abstract]	'	'
Cash collateral netted against derivative assets	$124	$79
Derivative assets not subject to netting arrangements	55	260
Cash collateral netted against derivative liabilities	717	1,200
Derivative liabilities not subject to netting arrangements	$119	$5

Fair_Values_of_Assets_and_Liab2

Fair Values of Assets and Liabilities - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value Disclosures [Abstract]	'	'	'
Fair value measurement transfers from one level to another	$0	$0	$0
Mortgage loans held for sale measured at fair value gain (loss)	-335	287	15
Standby Letters of Credit and Unfunded Commitments [Member]	'	'	'
Fair Value Disclosures [Abstract]	'	'	'
Carrying value of guarantee obligations	382	415	'
Other Guarantees [Member]	'	'	'
Fair Value Disclosures [Abstract]	'	'	'
Carrying value of guarantee obligations	$278	$452	'
Minimum [Member]	'	'	'
Fair Value Disclosures [Abstract]	'	'	'
Assumed credit valuation adjustment as percentage of underlying fair value of underlying derivative contracts	0.00%	'	'
Maximum [Member]	'	'	'
Fair Value Disclosures [Abstract]	'	'	'
Assumed credit valuation adjustment as percentage of underlying fair value of underlying derivative contracts	100.00%	'	'
Average [Member]	'	'	'
Fair Value Disclosures [Abstract]	'	'	'
Assumed credit valuation adjustment as percentage of underlying fair value of underlying derivative contracts	7.00%	'	'

Fair_Values_of_Assets_and_Liab3

Fair Values of Assets and Liabilities - Valuation Assumption Ranges for Level 3 Available-for-Sale Investment Securities (Detail)	Dec. 31, 2013
Minimum [Member] | Residential Non-Agency Prime [Member] | Residential [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	6.00%
Lifetime probability of default rates	'
Lifetime loss severity rates	25.00%
Discount margin	2.00%
Minimum [Member] | Residential Non-Agency Non-Prime [Member] | Residential [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	2.00%
Lifetime probability of default rates	4.00%
Lifetime loss severity rates	15.00%
Discount margin	1.00%
Minimum [Member] | Asset-Backed Securities [Member] | Asset Backed Securities Other [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	6.00%
Lifetime probability of default rates	5.00%
Lifetime loss severity rates	40.00%
Discount margin	7.00%
Maximum [Member] | Residential Non-Agency Prime [Member] | Residential [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	20.00%
Lifetime probability of default rates	7.00%
Lifetime loss severity rates	65.00%
Discount margin	5.00%
Maximum [Member] | Residential Non-Agency Non-Prime [Member] | Residential [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	10.00%
Lifetime probability of default rates	12.00%
Lifetime loss severity rates	70.00%
Discount margin	6.00%
Maximum [Member] | Asset-Backed Securities [Member] | Asset Backed Securities Other [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	6.00%
Lifetime probability of default rates	5.00%
Lifetime loss severity rates	40.00%
Discount margin	7.00%
Average [Member] | Residential Non-Agency Prime [Member] | Residential [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	13.00%
Lifetime probability of default rates	4.00%
Lifetime loss severity rates	42.00%
Discount margin	4.00%
Average [Member] | Residential Non-Agency Non-Prime [Member] | Residential [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	6.00%
Lifetime probability of default rates	8.00%
Lifetime loss severity rates	54.00%
Discount margin	3.00%
Average [Member] | Asset-Backed Securities [Member] | Asset Backed Securities Other [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Estimated lifetime prepayment rates	6.00%
Lifetime probability of default rates	5.00%
Lifetime loss severity rates	40.00%
Discount margin	7.00%

Fair_Values_of_Assets_and_Liab4

Fair Values of Assets and Liabilities - Valuation Assumption Ranges for MSRs (Detail)	Dec. 31, 2013	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Expected prepayment	11.20%	20.10%
Discount rate	10.20%	10.40%
Minimum [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Expected prepayment	10.00%	'
Discount rate	10.00%	'
Maximum [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Expected prepayment	21.00%	'
Discount rate	13.00%	'
Average [Member]	'	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'	'
Expected prepayment	11.00%	'
Discount rate	10.00%	'

Fair_Values_of_Assets_and_Liab5

Fair Values of Assets and Liabilities - Valuation Assumption Ranges for Derivative Commitments (Detail)	Dec. 31, 2013
Minimum [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Expected loan close rate	43.00%
Inherent MSR value (basis points per loan)	0.48%
Maximum [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Expected loan close rate	100.00%
Inherent MSR value (basis points per loan)	2.21%
Average [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Expected loan close rate	80.00%
Inherent MSR value (basis points per loan)	1.24%

Fair_Values_of_Assets_and_Liab6

Fair Values of Assets and Liabilities - Balances of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Derivative liabilities before netting	$1,598		$2,178		'	'
Derivative liabilities netting	-1,192		-1,549		'	'
Derivative assets before netting	1,349		1,546		'	'
Derivative assets netting	-599		-418		'	'
Available-for-sale securities	40,935	[1]	40,139	[1]	'	'
Mortgage loans held for sale	3,263		7,957		'	'
Mortgage servicing rights	2,680		1,700		1,519	1,837
Fair Value, Measurements, Recurring [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Derivative liabilities total	525		634		'	'
Derivative assets total	805		1,388		'	'
Available-for-sale securities	40,935		40,139		'	'
Mortgage loans held for sale	3,263		7,957		'	'
Mortgage servicing rights	2,680		1,700		'	'
Other assets	731		480		'	'
Total	48,414		51,664		'	'
Short-term borrowings	663		401		'	'
Total	1,188		1,035		'	'
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	1,045		1,226		'	'
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	5,738		6,455		'	'
Fair Value, Measurements, Recurring [Member] | Obligations of foreign governments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	6		6		'	'
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	640		731		'	'
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	212		218		'	'
Fair Value, Measurements, Recurring [Member] | Other investments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	161		202		'	'
Fair Value, Measurements, Recurring [Member] | Residential [Member] | Agency [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	31,553		29,495		'	'
Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	478		624		'	'
Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Non-Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	297		355		'	'
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	152		193		'	'
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	24		42		'	'
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	629		592		'	'
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	'		'		'	'
Derivative assets before netting	'		'		'	'
Available-for-sale securities	148		678		'	'
Mortgage loans held for sale	'		'		'	'
Mortgage servicing rights	'		'		'	'
Other assets	143		94		'	'
Total	291		772		'	'
Short-term borrowings	112		50		'	'
Total	112		50		'	'
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	7		491		'	'
Level 1 [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	'		'		'	'
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of foreign governments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
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	'		'		'	'
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	'		'		'	'
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Other investments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	141		187		'	'
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Agency [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Non-Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Level 1 [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	'		'		'	'
Level 1 [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	'		'		'	'
Level 1 [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	'		'		'	'
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	1,647		2,128		'	'
Derivative assets before netting	889		572		'	'
Available-for-sale securities	39,940		38,458		'	'
Mortgage loans held for sale	3,263		7,957		'	'
Mortgage servicing rights	'		'		'	'
Other assets	588		386		'	'
Total	44,680		47,373		'	'
Short-term borrowings	551		351		'	'
Total	2,198		2,479		'	'
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	1,038		735		'	'
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	5,738		6,455		'	'
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of foreign governments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	6		6		'	'
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	631		722		'	'
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	212		218		'	'
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Other investments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	20		15		'	'
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Agency [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	31,553		29,495		'	'
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Non-Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
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	152		193		'	'
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	24		42		'	'
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	566		577		'	'
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	70		55		'	'
Derivative assets before netting	515		1,234		'	'
Available-for-sale securities	847		1,003		'	'
Mortgage loans held for sale	'		'		'	'
Mortgage servicing rights	2,680		1,700		'	'
Other assets	'		'		'	'
Total	4,042		3,937		'	'
Short-term borrowings	'		'		'	'
Total	70		55		'	'
Level 3 [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	'		'		'	'
Level 3 [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	'		'		'	'
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of foreign governments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
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] | Perpetual preferred securities [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Other investments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Agency [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	478		624		'	'
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Non-Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	297		355		'	'
Level 3 [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	'		'		'	'
Level 3 [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	'		'		'	'
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	63		15		'	'
Netting [Member] | Fair Value, Measurements, Recurring [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Derivative liabilities netting	-1,192		-1,549		'	'
Derivative assets netting	-599		-418		'	'
Available-for-sale securities	'		'		'	'
Mortgage loans held for sale	'		'		'	'
Mortgage servicing rights	'		'		'	'
Other assets	'		'		'	'
Total	-599		-418		'	'
Short-term borrowings	'		'		'	'
Total	-1,192		-1,549		'	'
Netting [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	'		'		'	'
Netting [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	'		'		'	'
Netting [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of foreign governments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Netting [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	'		'		'	'
Netting [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	'		'		'	'
Netting [Member] | Fair Value, Measurements, Recurring [Member] | Other investments [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Netting [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Agency [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Netting [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Netting [Member] | Fair Value, Measurements, Recurring [Member] | Residential [Member] | Residential Non-Agency Non-Prime [Member]	'		'		'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'		'	'
Available-for-sale securities	'		'		'	'
Netting [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	'		'		'	'
Netting [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	'		'		'	'
Netting [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	'		'		'	'
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Fair_Values_of_Assets_and_Liab7

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 $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Residential Non-Agency Prime [Member] | Residential [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	$624	$803	$1,103
Net Gains (Losses) Included in Net Income	-6	-10	6
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	8	91	4
Purchases	'	'	'
Sales	'	-109	-115
Principal Payments	-148	-151	-195
Issuances	'	'	'
Settlements	'	'	'
End of Period Balance	478	624	803
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	9	65	-4
Residential Non-Agency Non-Prime [Member] | Residential [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	355	802	947
Net Gains (Losses) Included in Net Income	-13	-24	-7
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	17	228	1
Purchases	'	'	'
Sales	-20	-562	-13
Principal Payments	-42	-89	-126
Issuances	'	'	'
Settlements	'	'	'
End of Period Balance	297	355	802
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	17	80	1
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	15	117	133
Net Gains (Losses) Included in Net Income	3	7	10
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	1	'	-7
Purchases	51	3	5
Sales	'	-93	'
Principal Payments	-7	-19	-24
Issuances	'	'	'
Settlements	'	'	'
End of Period Balance	63	15	117
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	'	2	-7
Corporate debt securities [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	9	9	9
Net Gains (Losses) Included in Net Income	'	'	'
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	'	'	'
Purchases	'	'	'
Sales	'	'	'
Principal Payments	'	'	'
Issuances	'	'	'
Settlements	'	'	'
End of Period Balance	9	9	9
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	'	'	'
Available-for-Sale Securities [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	1,003	1,893	2,377
Net Gains (Losses) Included in Net Income	-16	-13	25
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	26	311	'
Purchases	51	3	5
Sales	-20	-906	-132
Principal Payments	-197	-285	-382
Issuances	'	'	'
Settlements	'	'	'
End of Period Balance	847	1,003	1,893
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	26	147	-7
Mortgage servicing rights [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	1,700	1,519	1,837
Net Gains (Losses) Included in Net Income	203	-818	-972
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	'	'	'
Purchases	8	42	35
Sales	'	'	'
Principal Payments	'	'	'
Issuances	769	957	619
Settlements	'	'	'
End of Period Balance	2,680	1,700	1,519
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	203	-818	-972
Commercial Non-Agency Mortgage-Backed Securities [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	'	42	50
Net Gains (Losses) Included in Net Income	'	1	3
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	'	'	-3
Purchases	'	'	'
Sales	'	-38	-4
Principal Payments	'	-5	-4
Issuances	'	'	'
Settlements	'	'	'
End of Period Balance	'	'	42
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	'	'	-2
Collateralized Loan Obligations [Member] | Asset-Backed Securities [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	'	120	135
Net Gains (Losses) Included in Net Income	'	13	13
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	'	-8	5
Purchases	'	'	'
Sales	'	-104	'
Principal Payments	'	-21	-33
Issuances	'	'	'
Settlements	'	'	'
End of Period Balance	'	'	120
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	'	'	5
Derivative [Member]	'	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'
Beginning of Period Balance	1,179	1,228	851
Net Gains (Losses) Included in Net Income	-18	2,398	1,550
Net Gains (Losses) Included in Other Comprehensive Income (Loss)	'	'	'
Purchases	1	3	1
Sales	-5	-5	-8
Principal Payments	'	'	'
Issuances	'	'	'
Settlements	-712	-2,445	-1,166
End of Period Balance	445	1,179	1,228
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Still Held at End of Period	($321)	$150	$442

Fair_Values_of_Assets_and_Liab8

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 $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
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	($14)	($47)	($31)
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	-2	34	56
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	-149	359	716
Net Change in net derivative asset and liability unrealized gains (losses) relating to assets still held at end of period	-340	-109	262
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	131	2,000	834
Net Change in net derivative asset and liability unrealized gains (losses) relating to assets still held at end of period	$19	$259	$180

Fair_Values_of_Assets_and_Liab9

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 $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	$128	$140
Other assets	150	194
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	'	'
Other assets	'	'
Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	'	'
Other assets	'	'
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	128	140
Other assets	$150	$194

Recovered_Sheet13

Fair Values of Assets and Liabilities - Losses Recognized Related to Nonrecurring Fair Value Measurements of Individual Assets or Portfolios (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]	'	'	'
Loans	$83	$68	$177
Other assets	$96	$160	$316

Recovered_Sheet14

Fair Values of Assets and Liabilities - Differences Between Aggregate Fair Value, Carrying Amount of MLHFS and Aggregate Unpaid Principal Amount (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'
Fair value carrying amount, total loans	$3,263	$7,957
Fair value carrying amount, nonaccrual loans	9	8
Fair value carrying amount, loans 90 days or more past due	'	2
Aggregate unpaid principal, total loans	3,195	7,588
Aggregate unpaid principal, nonaccrual loans	14	13
Aggregate unpaid principal, loans 90 days or more past due	'	3
Carrying amount over (under) unpaid principal, total loans	68	369
Carrying amount over (under) unpaid principal, nonaccrual loans	-5	-5
Carrying amount over (under) unpaid principal, loans 90 days or more past due	'	($1)

Recovered_Sheet15

Fair Values of Assets and Liabilities - Estimated Fair Values of Financial Instruments (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified
Financial Assets	'		'		'	'
Cash and due from banks	$8,477		$8,252		$13,962	$14,487
Investment securities held-to-maturity	38,920	[1]	34,389	[1]	'	'
Financial Liabilities	'		'		'	'
Deposits	262,123		249,183		'	'
Long-term debt	20,049		25,516		'	'
Carrying Amount [Member]	'		'		'	'
Financial Assets	'		'		'	'
Cash and due from banks	8,477		8,252		'	'
Federal funds sold and securities purchased under resale agreements	163		437		'	'
Investment securities held-to-maturity	38,920		34,389		'	'
Loans held for sale	5		19		'	'
Loans	230,857		218,765		'	'
Other financial instruments	2,422		7,367		'	'
Financial Liabilities	'		'		'	'
Deposits	262,123		249,183		'	'
Short-term borrowings	26,945		25,901		'	'
Long-term debt	20,049		25,516		'	'
Fair Value [Member]	'		'		'	'
Financial Assets	'		'		'	'
Cash and due from banks	8,477		8,252		'	'
Federal funds sold and securities purchased under resale agreements	163		437		'	'
Investment securities held-to-maturity	38,368		34,952		'	'
Loans held for sale	5		19		'	'
Loans	231,480		220,354		'	'
Other financial instruments	2,442		7,385		'	'
Financial Liabilities	'		'		'	'
Deposits	262,200		249,594		'	'
Short-term borrowings	26,863		25,917		'	'
Long-term debt	20,391		26,205		'	'
Fair Value [Member] | Level 1 [Member]	'		'		'	'
Financial Assets	'		'		'	'
Cash and due from banks	8,477		8,252		'	'
Federal funds sold and securities purchased under resale agreements	'		'		'	'
Investment securities held-to-maturity	2,589		2,984		'	'
Loans held for sale	'		'		'	'
Loans	'		'		'	'
Other financial instruments	'		'		'	'
Financial Liabilities	'		'		'	'
Deposits	'		'		'	'
Short-term borrowings	'		'		'	'
Long-term debt	'		'		'	'
Fair Value [Member] | Level 2 [Member]	'		'		'	'
Financial Assets	'		'		'	'
Cash and due from banks	'		'		'	'
Federal funds sold and securities purchased under resale agreements	163		437		'	'
Investment securities held-to-maturity	35,678		31,845		'	'
Loans held for sale	'		'		'	'
Loans	'		'		'	'
Other financial instruments	1,080		1,228		'	'
Financial Liabilities	'		'		'	'
Deposits	262,200		249,594		'	'
Short-term borrowings	26,863		25,917		'	'
Long-term debt	20,391		26,205		'	'
Fair Value [Member] | Level 3 [Member]	'		'		'	'
Financial Assets	'		'		'	'
Cash and due from banks	'		'		'	'
Federal funds sold and securities purchased under resale agreements	'		'		'	'
Investment securities held-to-maturity	101		123		'	'
Loans held for sale	5		19		'	'
Loans	231,480		220,354		'	'
Other financial instruments	1,362		6,157		'	'
Financial Liabilities	'		'		'	'
Deposits	'		'		'	'
Short-term borrowings	'		'		'	'
Long-term debt	'		'		'	'
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

Guarantees_and_Contingent_Liab2

Guarantees and Contingent Liabilities - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Liability related to remaining Visa Litigation, carrying amount	$41,000,000	'	'	'
Total rental expense for operating leases	311,000,000	295,000,000	291,000,000	'
Representation and warranty reserve	83,000,000	240,000,000	160,000,000	180,000,000
Loss contingency range of possible loss maximum	200,000,000	'	'	'
Securities lending indemnifications [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	5,261,000,000	'	'	'
Carrying amount	'	'	'	'
Collateral held	5,397,000,000	'	'	'
Tender option bond program guarantee [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	4,575,000,000	'	'	'
Carrying amount	'	'	'	'
Collateral held	4,604,000,000	'	'	'
Standby letters of credit [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	16,891,000,000	'	'	'
Approximate weighted-average term of potential future payments guaranteed under standby letter of credit arrangements	'21 months	'	'	'
Carrying amount	71,000,000	'	'	'
Collateral held	'	'	'	'
Third-party borrowing arrangements [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	12,000,000	'	'	'
Carrying amount	'	'	'	'
Collateral held	'	'	'	'
Asset sales [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	3,656,000,000	'	'	'
Carrying amount	185,000,000	'	'	'
Collateral held	'	'	'	'
Reserve for potential loss related to sale or syndication of tax-advantage investments	102,000,000	'	'	'
Representation and warranty reserve	83,000,000	240,000,000	'	'
Decrease in representation and warranty due to settlement on loans sold to the Federal Home Loan Mortgage Corporation (Freddie Mac) between 2000 and 2008	157,000,000	'	'	'
Unresolved representation and warranty claims	89,000,000	131,000,000	'	'
Merchant processing [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	83,496,000,000	'	'	'
Carrying amount	69,000,000	'	'	'
Collateral held	648,000,000	'	'	'
Value of airline tickets purchased to deliver at future date	5,200,000,000	'	'	'
Company held collateral in escrow deposits, letters of credit and indemnities from financial institutions and liens on various assets	538,000,000	'	'	'
Company held collateral in merchant escrow deposits	23,000,000	'	'	'
Liability primarily related to airline processing arrangements	58,000,000	'	'	'
Merchant escrow deposits held as collateral related to unresolved charge-backs	87,000,000	'	'	'
Recorded liability for potential losses related to unresolved charge-backs	11,000,000	'	'	'
Contingent consideration arrangements [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	12,000,000	'	'	'
Carrying amount	12,000,000	'	'	'
Collateral held	'	'	'	'
Minimum revenue guarantees [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	12,000,000	'	'	'
Carrying amount	12,000,000	'	'	'
Collateral held	'	'	'	'
Other [Member]	'	'	'	'
Guarantees And Contingent Liabilities (Textual) [Abstract]	'	'	'	'
Maximum potential payments	468,000,000	'	'	'
Carrying amount	'	'	'	'
Collateral held	'	'	'	'

Guarantees_and_Contingent_Liab3

Guarantees and Contingent Liabilities - Summary of Contract or Notional Amounts of Unfunded Commitments to Extend Credit (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Commercial and commercial real estate [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	$103,851
Corporate and purchasing cards [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	20,007
Residential Mortgages [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	109
Retail credit cards [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	71,456
Other Retail [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	29,115
Covered Loans [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	838
Federal Funds [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	4,898
Less Than One Year [Member] | Commercial and commercial real estate [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	20,321
Less Than One Year [Member] | Corporate and purchasing cards [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	20,007
Less Than One Year [Member] | Residential Mortgages [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	98
Less Than One Year [Member] | Retail credit cards [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	71,192
Less Than One Year [Member] | Other Retail [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	11,382
Less Than One Year [Member] | Covered Loans [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	31
Less Than One Year [Member] | Federal Funds [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	4,898
Greater Than One Year [Member] | Commercial and commercial real estate [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	83,530
Greater Than One Year [Member] | Corporate and purchasing cards [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	'
Greater Than One Year [Member] | Residential Mortgages [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	11
Greater Than One Year [Member] | Retail credit cards [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	264
Greater Than One Year [Member] | Other Retail [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	17,733
Greater Than One Year [Member] | Covered Loans [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	807
Greater Than One Year [Member] | Federal Funds [Member]	'
Guarantees and Commitments to Extend Credit [Line Items]	'
Contract or notional amounts of unfunded commitments to extend credit	'

Guarantees_and_Contingent_Liab4

Guarantees and Contingent Liabilities - Summary of Lease Commitments (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Capital Leases	'
Capital Leases, 2014	$9
Capital Leases, 2015	8
Capital Leases, 2016	8
Capital Leases, 2017	6
Capital Leases, 2018	6
Capital lease, Thereafter	25
Total minimum capital lease payments	62
Less amount representing interest	23
Present value of net minimum lease payments	39
Operating Leases	'
Operating Leases, 2014	244
Operating Leases, 2015	215
Operating Leases, 2016	182
Operating Leases, 2017	154
Operating Leases, 2018	116
Operating Leases, Thereafter	474
Total minimum operating lease payments	$1,385

Guarantees_and_Contingent_Liab5

Guarantees and Contingent Liabilities - Summary of Other Guarantees and Contingent Liabilities (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Standby letters of credit [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	'
Carrying amount	71
Maximum Potential Future Payments	16,891
Third-party borrowing arrangements [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	'
Carrying amount	'
Maximum Potential Future Payments	12
Securities lending indemnifications [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	5,397
Carrying amount	'
Maximum Potential Future Payments	5,261
Asset sales [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	'
Carrying amount	185
Maximum Potential Future Payments	3,656
Merchant processing [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	648
Carrying amount	69
Maximum Potential Future Payments	83,496
Contingent consideration arrangements [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	'
Carrying amount	12
Maximum Potential Future Payments	12
Tender option bond program guarantee [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	4,604
Carrying amount	'
Maximum Potential Future Payments	4,575
Minimum revenue guarantees [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	'
Carrying amount	12
Maximum Potential Future Payments	12
Other [Member]	'
Guarantor Obligations [Line Items]	'
Collateral held	'
Carrying amount	'
Maximum Potential Future Payments	$468

Guarantees_and_Contingent_Liab6

Guarantees and Contingent Liabilities - Summary of Contract or Notional Amounts of Letters of Credit (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Standby letters of credit [Member]	'
Guarantees And Letters Of Credit [Line Items]	'
Contract or notional amount of letters of credit	$16,891
Commercial [Member]	'
Guarantees And Letters Of Credit [Line Items]	'
Contract or notional amount of letters of credit	295
Less Than One Year [Member] | Standby letters of credit [Member]	'
Guarantees And Letters Of Credit [Line Items]	'
Contract or notional amount of letters of credit	7,778
Less Than One Year [Member] | Commercial [Member]	'
Guarantees And Letters Of Credit [Line Items]	'
Contract or notional amount of letters of credit	252
Greater Than One Year [Member] | Standby letters of credit [Member]	'
Guarantees And Letters Of Credit [Line Items]	'
Contract or notional amount of letters of credit	9,113
Greater Than One Year [Member] | Commercial [Member]	'
Guarantees And Letters Of Credit [Line Items]	'
Contract or notional amount of letters of credit	$43

Guarantees_and_Contingent_Liab7

Guarantees and Contingent Liabilities - Company's Representation and Warranty Reserve (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation And Qualifying Accounts [Abstract]	'	'	'
Representation and Warranty Reserve, Beginning Balance	$240	$160	$180
Net realized losses	-115	-120	-137
Change in reserve	-42	200	117
Representation and Warranty Reserve, Ending Balance	$83	$240	$160

US_Bancorp_Parent_Company_Cond

U.S. Bancorp (Parent Company) - Condensed Statement of Financial Position of Parent Company Only (Detail) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified
Assets	'		'		'
Available-for-sale securities	$40,935	[1]	$40,139	[1]	'
Other assets	26,096	[1]	29,675	[1]	'
Total assets	364,021		353,855		'
Liabilities and Shareholders' Equity	'		'		'
Short-term funds borrowed	27,608		26,302		30,468
Long-term debt	20,049		25,516		'
Other liabilities	12,434		12,587		'
Shareholders' equity	41,113		38,998		'
Total liabilities and equity	364,021		353,855		'
Parent Company [Member]	'		'		'
Assets	'		'		'
Due from banks, principally interest-bearing	8,371		3,630		'
Available-for-sale securities	463		425		'
Other assets	1,628		1,550		'
Total assets	53,350		52,634		'
Liabilities and Shareholders' Equity	'		'		'
Short-term funds borrowed	138		134		'
Long-term debt	11,416		12,772		'
Other liabilities	683		730		'
Shareholders' equity	41,113		38,998		'
Total liabilities and equity	53,350		52,634		'
Bank Subsidiaries [Member] | Parent Company [Member]	'		'		'
Assets	'		'		'
Investments in subsidiaries	37,558		38,007		'
Advances to subsidiaries	2,250		6,173		'
Non-bank Subsidiaries [Member] | Parent Company [Member]	'		'		'
Assets	'		'		'
Investments in subsidiaries	1,546		1,445		'
Advances to subsidiaries	$1,534		$1,404		'
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

US_Bancorp_Parent_Company_Cond1

U.S. Bancorp (Parent Company) - Condensed Income Statement of Parent Company Only (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income	'	'	'
Other income	$569	$743	$1,011
Expense	'	'	'
Interest expense	1,681	2,138	2,516
Other expense	1,695	1,957	1,914
Income before income taxes	7,764	7,726	6,629
Applicable income taxes	2,032	2,236	1,841
Net income attributable to U.S. Bancorp	5,836	5,647	4,872
Parent Company [Member]	'	'	'
Income	'	'	'
Interest from subsidiaries	118	96	101
Other income	66	149	134
Total income	6,293	499	1,742
Expense	'	'	'
Interest expense	325	393	425
Other expense	81	122	79
Total expense	406	515	504
Income before income taxes	5,887	-16	1,238
Applicable income taxes	-88	-85	-83
Income of parent company	5,975	69	1,321
Equity in undistributed income (losses) of subsidiaries	-139	5,578	3,551
Net income attributable to U.S. Bancorp	5,836	5,647	4,872
Bank Subsidiaries [Member] | Parent Company [Member]	'	'	'
Income	'	'	'
Dividends from subsidiaries	6,100	250	1,500
Non-bank Subsidiaries [Member] | Parent Company [Member]	'	'	'
Income	'	'	'
Dividends from subsidiaries	$9	$4	$7

US_Bancorp_Parent_Company_Cond2

U.S. Bancorp (Parent Company) - Condensed Statement of Cash Flows of Parent Company Only (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities	'	'	'
Net income attributable to U.S. Bancorp	$5,836	$5,647	$4,872
Adjustments to reconcile net income to net cash provided by operating activities	'	'	'
Other, net	-46	1,867	449
Net cash provided by operating activities	11,446	7,958	9,820
Investing Activities	'	'	'
Other, net	-303	-1,261	-1,070
Net cash provided by (used in) investing activities	-21,024	-20,253	-32,704
Financing Activities	'	'	'
Net increase (decrease) in short-term borrowings	1,306	-4,167	-2,205
Proceeds from issuance of long-term debt	2,041	4,966	3,611
Principal payments or redemption of long-term debt	-2,883	-11,415	-3,300
Proceeds from issuance of preferred stock	487	2,163	676
Proceeds from issuance of common stock	524	395	180
Redemption of preferred stock	-500	'	'
Repurchase of common stock	-2,282	-1,856	-514
Cash dividends paid on preferred stock	-254	-204	-118
Cash dividends paid on common stock	-1,576	-1,347	-817
Net cash provided by (used in) financing activities	9,803	6,585	22,359
Change in cash and due from banks	225	-5,710	-525
Cash and due from banks at beginning of period	8,252	13,962	14,487
Cash and due from banks at end of period	8,477	8,252	13,962
Parent Company [Member]	'	'	'
Operating Activities	'	'	'
Net income attributable to U.S. Bancorp	5,836	5,647	4,872
Adjustments to reconcile net income to net cash provided by operating activities	'	'	'
Equity in undistributed (income) losses of subsidiaries	139	-5,578	-3,551
Other, net	-40	-35	12
Net cash provided by operating activities	5,935	34	1,333
Investing Activities	'	'	'
Proceeds from sales and maturities of investment securities	75	979	297
Purchases of investment securities	-118	-35	-36
Equity distributions from subsidiaries	12	845	77
Net (increase) decrease in short-term advances to subsidiaries	4,543	207	-4,613
Long-term advances to subsidiaries	-750	-500	'
Other, net	-9	-22	-3
Net cash provided by (used in) investing activities	3,753	1,474	-4,278
Financing Activities	'	'	'
Net increase (decrease) in short-term borrowings	4	105	-31
Proceeds from issuance of long-term debt	1,500	3,550	2,426
Principal payments or redemption of long-term debt	-2,850	-5,412	-851
Proceeds from issuance of preferred stock	487	2,163	676
Proceeds from issuance of common stock	524	395	180
Redemption of preferred stock	-500	'	'
Repurchase of common stock	-2,282	-1,856	-514
Cash dividends paid on preferred stock	-254	-204	-118
Cash dividends paid on common stock	-1,576	-1,347	-817
Net cash provided by (used in) financing activities	-4,947	-2,606	951
Change in cash and due from banks	4,741	-1,098	-1,994
Cash and due from banks at beginning of period	3,630	4,728	6,722
Cash and due from banks at end of period	$8,371	$3,630	$4,728

US_Bancorp_Parent_Company_Addi

U.S. Bancorp (Parent Company) - Additional Information (Detail)	Dec. 31, 2013
Receivables	'
Loan Limits to the company or individual affiliate	10.00%
Maximum limit of loans to the Company and all affiliates	20.00%