Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 1,497	$ 1,509	$ 2,941	$ 2,921
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on securities available-for-sale	(356)	206	(148)	507
Other-than-temporary impairment not recognized in earnings on securities available-for-sale		1		1
Changes in unrealized gains and losses on derivative hedges	5	(24)	(23)	(35)
Foreign currency translation	8	18	25	14
Reclassification to earnings of realized gains and losses	98	72	197	145
Income taxes related to other comprehensive income	94	(105)	(20)	(243)
Total other comprehensive income (loss)	(151)	168	31	389
Comprehensive income	1,346	1,677	2,972	3,310
Comprehensive (income) loss attributable to noncontrolling interests	(14)	(14)	(27)	(29)
Comprehensive income attributable to U.S. Bancorp	$ 1,332	$ 1,663	$ 2,945	$ 3,281