Consolidated Statement of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Interest Income
Loans	$ 2,552	$ 2,631	$ 5,114	$ 5,269
Loans held for sale	54	67	126	132
Investment securities	392	470	802	938
Other interest income	40	60	107	121
Total interest income	3,038	3,228	6,149	6,460
Interest Expense
Deposits	144	177	299	358
Short-term borrowings	87	127	172	250
Long-term debt	191	266	409	560
Total interest expense	422	570	880	1,168
Net interest income	2,616	2,658	5,269	5,292
Provision for credit losses	362	470	765	951
Net interest income after provision for credit losses	2,254	2,188	4,504	4,341
Noninterest Income
Credit and debit card revenue	244	235	458	437
Corporate payment products revenue	176	190	348	365
Merchant processing services	373	359	720	696
ATM processing services	83	89	165	176
Trust and investment management fees	284	262	562	514
Deposit service charges	160	156	313	309
Treasury management fees	140	142	274	276
Commercial products revenue	209	216	409	427
Mortgage banking revenue	396	490	797	942
Investment products fees	46	38	87	73
Securities gains (losses), net
Realized gains (losses), net	9	21	21	30
Total other-than-temporary impairment	(2)	(39)	(3)	(48)
Portion of other-than-temporary impairment recognized in other comprehensive income	(1)	(1)	(7)	(1)
Total securities gains (losses), net	6	(19)	11	(19)
Other	159	197	297	398
Total noninterest income	2,276	2,355	4,441	4,594
Noninterest Expense
Compensation	1,098	1,076	2,180	2,128
Employee benefits	277	229	587	489
Net occupancy and equipment	234	230	469	450
Professional services	91	136	169	220
Marketing and business development	96	80	169	189
Technology and communications	214	201	425	402
Postage, printing and supplies	78	77	154	151
Other intangibles	55	70	112	141
Other	414	502	762	991
Total noninterest expense	2,557	2,601	5,027	5,161
Income before income taxes	1,973	1,942	3,918	3,774
Applicable income taxes	529	564	1,087	1,091
Net income	1,444	1,378	2,831	2,683
Net (income) loss attributable to noncontrolling interests	40	37	81	70
Net income attributable to U.S. Bancorp	1,484	1,415	2,912	2,753
Net income applicable to U.S. Bancorp common shareholders	$ 1,405	$ 1,345	$ 2,763	$ 2,630
Earnings per common share	$ 0.76	$ 0.71	$ 1.49	$ 1.39
Diluted earnings per common share	$ 0.76	$ 0.71	$ 1.49	$ 1.38
Dividends declared per common share	$ 0.230	$ 0.195	$ 0.425	$ 0.390
Average common shares outstanding	1,843	1,888	1,851	1,895
Average diluted common shares outstanding	1,853	1,898	1,860	1,904