Consolidated Statement of Shareholders' Equity [Unaudited] (USD $) In Millions	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]
Beginning Balance at Dec. 31, 2011	$ 34,971	$ 21	$ 2,606	$ 8,238	$ 30,785	$ (6,472)	$ (1,200)	$ 33,978	$ 993
Share, Beginning Balance at Dec. 31, 2011		1,910
Net income	1,305
Net (income) loss attributable to noncontrolling interests	(33)								(33)
Net income attributable to U.S. Bancorp	1,338				1,338			1,338
Other comprehensive income (loss)	256						256	256
Preferred stock dividends	(46)				(46)			(46)
Common stock dividends	(372)				(372)			(372)
Issuance of preferred stock	1,088		1,088					1,088
Issuance of common and treasury stock	101			(110)		211		101
Issuance of common and treasury stock, shares		7
Purchase of treasury stock	(483)					(483)		(483)
Purchase of treasury stock, shares		(16)
Distributions to noncontrolling interests	(28)								(28)
Net other changes in noncontrolling interests	82								82
Stock option and restricted stock grants	40			40				40
Ending Balance at Mar. 31, 2012	36,914	21	3,694	8,168	31,705	(6,744)	(944)	35,900	1,014
Shares, Ending Balance at Mar. 31, 2012		1,901
Beginning Balance at Dec. 31, 2012	40,267	21	4,769	8,201	34,720	(7,790)	(923)	38,998	1,269
Share, Beginning Balance at Dec. 31, 2012		1,869
Net income	1,387
Net (income) loss attributable to noncontrolling interests	(41)								(41)
Net income attributable to U.S. Bancorp	1,428				1,428			1,428
Other comprehensive income (loss)	(18)						(18)	(18)
Preferred stock dividends	(64)				(64)			(64)
Common stock dividends	(364)				(364)			(364)
Issuance of common and treasury stock	73			(115)		188		73
Issuance of common and treasury stock, shares		6
Purchase of treasury stock	(574)					(574)		(574)
Purchase of treasury stock, shares		(17)
Distributions to noncontrolling interests	(15)								(15)
Net other changes in noncontrolling interests	103								103
Stock option and restricted stock grants	52			52				52
Ending Balance at Mar. 31, 2013	$ 40,847	$ 21	$ 4,769	$ 8,138	$ 35,720	$ (8,176)	$ (941)	$ 39,531	$ 1,316
Shares, Ending Balance at Mar. 31, 2013		1,858