Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 1,503	$ 1,486	$ 4,444	$ 4,407
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on securities available-for-sale	202	(21)	54	486
Other-than-temporary impairment not recognized in earnings on securities available-for-sale				1
Changes in unrealized gains and losses on derivative hedges	(38)	16	(61)	(19)
Foreign currency translation	(28)	4	(3)	18
Reclassification to earnings of realized gains and losses	98	76	295	221
Income taxes related to other comprehensive income	(90)	(29)	(110)	(272)
Total other comprehensive income (loss)	144	46	175	435
Comprehensive income	1,647	1,532	4,619	4,842
Comprehensive (income) loss attributable to noncontrolling interests	(14)	(15)	(41)	(44)
Comprehensive income attributable to U.S. Bancorp	$ 1,633	$ 1,517	$ 4,578	$ 4,798