Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) shares in Millions, $ 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, 2015	$ 46,817	$ 21	$ 5,501	$ 8,376	$ 46,377	$ (13,125)	$ (1,019)	$ 46,131	$ 686
Shares, Beginning Balance at Dec. 31, 2015		1,745
Net income (loss)	4,453				4,410			4,410	43
Other comprehensive income (loss)	440						440	440
Preferred stock dividends	(201)				(201)			(201)
Common stock dividends	(1,364)				(1,364)			(1,364)
Issuance of common and treasury stock	169			(59)		228		169
Issuance of common and treasury stock, shares		7
Purchase of treasury stock	(1,947)					(1,947)		(1,947)
Purchase of treasury stock, shares		(47)
Distributions to noncontrolling interests	(38)								(38)
Purchase of noncontrolling interests	(40)			1	9			10	(50)
Net other changes in noncontrolling interests	(1)								(1)
Stock option and restricted stock grants	111			111				111
Ending Balance at Sep. 30, 2016	48,399	$ 21	5,501	8,429	49,231	(14,844)	(579)	47,759	640
Shares, Ending Balance at Sep. 30, 2016		1,705
Beginning Balance at Dec. 31, 2016	47,933	$ 21	5,501	8,440	50,151	(15,280)	(1,535)	47,298	635
Shares, Beginning Balance at Dec. 31, 2016		1,697
Net income (loss)	4,567				4,536			4,536	31
Other comprehensive income (loss)	316						316	316
Preferred stock dividends	(204)				(204)			(204)
Common stock dividends	(1,450)				(1,450)			(1,450)
Issuance of preferred stock	993		993					993
Redemption of preferred stock	(1,085)		(1,075)		(10)			(1,085)
Issuance of common and treasury stock	142			(115)		257		142
Issuance of common and treasury stock, shares		7
Purchase of treasury stock	(1,955)					(1,955)		(1,955)
Purchase of treasury stock, shares		(37)
Distributions to noncontrolling interests	(41)								(41)
Net other changes in noncontrolling interests	3								3
Stock option and restricted stock grants	132			132				132
Ending Balance at Sep. 30, 2017	$ 49,351	$ 21	$ 5,419	$ 8,457	$ 53,023	$ (16,978)	$ (1,219)	$ 48,723	$ 628
Shares, Ending Balance at Sep. 30, 2017		1,667