Consolidated Statement of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Interest Income
Loans	$ 2,631	$ 2,563	$ 5,269	$ 5,115
Loans held for sale	67	34	132	97
Investment securities	470	459	938	887
Other interest income	60	63	121	120
Total interest income	3,228	3,119	6,460	6,219
Interest Expense
Deposits	177	210	358	444
Short-term borrowings	127	131	250	264
Long-term debt	266	290	560	571
Total interest expense	570	631	1,168	1,279
Net interest income	2,658	2,488	5,292	4,940
Provision for credit losses	470	572	951	1,327
Net interest income after provision for credit losses	2,188	1,916	4,341	3,613
Noninterest Income
Credit and debit card revenue	235	286	437	553
Corporate payment products revenue	190	185	365	360
Merchant processing services	359	338	696	639
ATM processing services	89	114	176	226
Trust and investment management fees	262	258	514	514
Deposit service charges	156	162	309	305
Treasury management fees	142	144	276	281
Commercial products revenue	216	218	427	409
Mortgage banking revenue	490	239	942	438
Investment products fees and commissions	38	35	73	67
Securities gains (losses), net
Realized gains (losses), net	21	1	30	2
Total other-than-temporary impairment	(39)	(19)	(48)	(30)
Portion of other-than-temporary impairment recognized in other comprehensive income	(1)	10	(1)	15
Total securities gains (losses), net	(19)	(8)	(19)	(13)
Other	197	175	398	379
Total noninterest income	2,355	2,146	4,594	4,158
Noninterest Expense
Compensation	1,076	1,004	2,128	1,963
Employee benefits	229	210	489	440
Net occupancy and equipment	230	249	450	498
Professional services	136	82	220	152
Marketing and business development	80	90	189	155
Technology and communications	201	189	402	374
Postage, printing and supplies	77	76	151	150
Other intangibles	70	75	141	150
Other	502	450	991	857
Total noninterest expense	2,601	2,425	5,161	4,739
Income before income taxes	1,942	1,637	3,774	3,032
Applicable income taxes	564	458	1,091	824
Net income	1,378	1,179	2,683	2,208
Net (income) loss attributable to noncontrolling interests	37	24	70	41
Net income attributable to U.S. Bancorp	1,415	1,203	2,753	2,249
Net income applicable to U.S. Bancorp common shareholders	$ 1,345	$ 1,167	$ 2,630	$ 2,170
Earnings per common share	$ 0.71	$ 0.61	$ 1.39	$ 1.13
Diluted earnings per common share	$ 0.71	$ 0.60	$ 1.38	$ 1.12
Dividends declared per common share	$ 0.195	$ 0.125	$ 0.390	$ 0.250
Average common shares outstanding	1,888	1,921	1,895	1,920
Average diluted common shares outstanding	1,898	1,929	1,904	1,929