Consolidated Statement of Shareholders' Equity - USD ($) shares in Millions, $ in Millions		Total	Cumulative Effect, Period of Adoption, Adjustment [Member]		Common Stock [Member]	Preferred Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]		Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total U.S. Bancorp Shareholders' Equity [Member]	Total U.S. Bancorp Shareholders' Equity [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]		Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2018		$ 51,657	$ 2		$ 21	$ 5,984	$ 8,469	$ 59,065	$ 2		$ (20,188)	$ (2,322)	$ 51,029	$ 2		$ 628
Shares, Beginning Balance at Dec. 31, 2018					1,608
Net income (loss)		3,536						3,520					3,520			16
Other comprehensive income (loss)		978										978	978
Preferred stock dividends	[1]	(151)						(151)					(151)
Common stock dividends		(1,184)						(1,184)					(1,184)
Issuance of common and treasury stock		24					(119)				143		24
Issuance of common and treasury stock, shares					3
Purchase of treasury stock		(1,420)									(1,420)		(1,420)
Purchase of treasury stock, shares					(27)
Distributions to noncontrolling interests		(16)														(16)
Net other changes in noncontrolling interests		(1)														(1)
Stock option and restricted stock grants		115					115						115
Shares, Ending Balance at Jun. 30, 2019					1,584
Ending Balance at Jun. 30, 2019		53,540			$ 21	5,984	8,465	61,252			(21,465)	(1,344)	52,913			627
Beginning Balance at Mar. 31, 2019		52,686			$ 21	5,984	8,432	60,092			(20,699)	(1,773)	52,057			629
Shares, Beginning Balance at Mar. 31, 2019					1,599
Net income (loss)		1,828						1,821					1,821			7
Other comprehensive income (loss)		429										429	429
Preferred stock dividends	[2]	(72)						(72)					(72)
Common stock dividends		(589)						(589)					(589)
Issuance of common and treasury stock		9					(5)				14		9
Purchase of treasury stock		(780)									(780)		(780)
Purchase of treasury stock, shares					(15)
Distributions to noncontrolling interests		(8)														(8)
Net other changes in noncontrolling interests		(1)														(1)
Stock option and restricted stock grants		38					38						38
Shares, Ending Balance at Jun. 30, 2019					1,584
Ending Balance at Jun. 30, 2019		53,540			$ 21	5,984	8,465	61,252			(21,465)	(1,344)	52,913			627
Beginning Balance at Dec. 31, 2019		52,483	$ (1,099)	[3]	$ 21	5,984	8,475	63,186	$ (1,099)	[3]	(24,440)	(1,373)	51,853	$ (1,099)	[3]	630
Shares, Beginning Balance at Dec. 31, 2019					1,534
Net income (loss)		1,874						1,860					1,860			14
Other comprehensive income (loss)		2,171										2,171	2,171
Preferred stock dividends	[4]	(150)						(150)					(150)
Common stock dividends		(1,271)						(1,271)					(1,271)
Issuance of common and treasury stock		10					(117)				127		10
Issuance of common and treasury stock, shares					3
Purchase of treasury stock		(1,649)									(1,649)		(1,649)
Purchase of treasury stock, shares					(31)
Distributions to noncontrolling interests		(14)														(14)
Stock option and restricted stock grants		125					125						125
Shares, Ending Balance at Jun. 30, 2020					1,506
Ending Balance at Jun. 30, 2020		52,480			$ 21	5,984	8,483	62,526			(25,962)	798	51,850			630
Beginning Balance at Mar. 31, 2020		52,162			$ 21	5,984	8,452	62,544			(25,972)	503	51,532			630
Shares, Beginning Balance at Mar. 31, 2020					1,506
Net income (loss)		695						689					689			6
Other comprehensive income (loss)		295										295	295
Preferred stock dividends	[5]	(72)						(72)					(72)
Common stock dividends		(635)						(635)					(635)
Issuance of common and treasury stock		1					(9)				10		1
Distributions to noncontrolling interests		(6)														(6)
Stock option and restricted stock grants		40					40						40
Shares, Ending Balance at Jun. 30, 2020					1,506
Ending Balance at Jun. 30, 2020		$ 52,480			$ 21	$ 5,984	$ 8,483	$ 62,526			$ (25,962)	$ 798	$ 51,850			$ 630

[1] Reflects dividends declared per share on the Company’s Series A, Series B, Series F, Series H, Series I, Series J and Series K Non-Cumulative Perpetual Preferred Stock of $1,866.062, $439.93, $812.50, $643.76, $640.625, $662.50 and $687.50, respectively.

[2] Reflects dividends declared per share on the Company’s Series A, Series B, Series F, Series H, Series I and Series K Non-Cumulative Perpetual Preferred Stock of $914.234, $221.18, $406.25, $321.88, $640.625 and $343.75, respectively.

[3] Effective January 1, 2020, the Company adopted accounting guidance which changed impairment recognition of financial instruments to a model that is based on expected losses rather than incurred losses. Upon adoption, the Company increased its allowance for credit losses and reduced retained earnings net of deferred tax liabilities through a cumulative-effect adjustment.

[4] Reflects dividends declared per share on the Company’s Series A, Series B, Series F, Series H, Series I, Series J and Series K Non-Cumulative Perpetual Preferred Stock of $1,769.444, $442.36, $812.50, $643.76, $640.625, $662.50 and $687.50, respectively.

[5] Reflects dividends declared per share on the Company’s Series A, Series B, Series F, Series H, Series I and Series K Non-Cumulative Perpetual Preferred Stock of $884.722, $221.18, $406.25, $321.88, $640.625 and $343.75, respectively.