Consolidated Statement of Shareholders' Equity - USD ($) shares in Millions, $ in Millions		Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	[1]	Common Stock [Member]	Preferred Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	[1]	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]	[1]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2019		$ 52,483	$ (1,099)		$ 21	$ 5,984	$ 8,475	$ 63,186	$ (1,099)		$ (24,440)	$ (1,373)	$ 51,853	$ (1,099)		$ 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	[2]	(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
Ending Balance at Jun. 30, 2020		52,480			$ 21	5,984	8,483	62,526			(25,962)	798	51,850			630
Shares, Ending Balance at Jun. 30, 2020					1,506
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	[3]	(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
Ending Balance at Jun. 30, 2020		52,480			$ 21	5,984	8,483	62,526			(25,962)	798	51,850			630
Shares, Ending Balance at Jun. 30, 2020					1,506
Beginning Balance at Dec. 31, 2020		53,725			$ 21	5,983	8,511	64,188			(25,930)	322	53,095			630
Shares, Beginning Balance at Dec. 31, 2020					1,507
Net income (loss)		4,273						4,262					4,262			11
Other comprehensive income (loss)		(1,524)										(1,524)	(1,524)
Preferred stock dividends	[4]	(148)						(148)					(148)
Common stock dividends		(1,258)						(1,258)					(1,258)
Issuance of preferred stock		730				730							730
Issuance of common and treasury stock		36					(126)				162		36
Issuance of common and treasury stock, shares					4
Purchase of treasury stock		(1,537)									(1,537)		(1,537)
Purchase of treasury stock, shares					(28)
Distributions to noncontrolling interests		(11)														(11)
Net other changes in noncontrolling interests		5														5
Stock option and restricted stock grants		133					133						133
Redemption of preferred stock		(750)				(745)		(5)					(750)
Ending Balance at Jun. 30, 2021		53,674			$ 21	5,968	8,518	67,039			(27,305)	(1,202)	53,039			635
Shares, Ending Balance at Jun. 30, 2021					1,483
Beginning Balance at Mar. 31, 2021		52,308			$ 21	5,968	8,487	65,740			(26,443)	(2,095)	51,678			630
Shares, Beginning Balance at Mar. 31, 2021					1,497
Net income (loss)		1,988						1,982					1,982			6
Other comprehensive income (loss)		893										893	893
Preferred stock dividends	[5]	(58)						(58)					(58)
Common stock dividends		(625)						(625)					(625)
Issuance of common and treasury stock		18					(7)				25		18
Issuance of common and treasury stock, shares					1
Purchase of treasury stock		(887)									(887)		(887)
Purchase of treasury stock, shares					(15)
Distributions to noncontrolling interests		(6)														(6)
Net other changes in noncontrolling interests		5														5
Stock option and restricted stock grants		38					38						38
Ending Balance at Jun. 30, 2021		$ 53,674			$ 21	$ 5,968	$ 8,518	$ 67,039			$ (27,305)	$ (1,202)	$ 53,039			$ 635
Shares, Ending Balance at Jun. 30, 2021					1,483

[1] 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.

[2] 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.

[3] 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.

[4] Reflects dividends declared per share on the Company’s Series A, Series B, Series F, Series I, Series J, Series K, Series L and Series M Non-Cumulative Perpetual Preferred Stock of $1,759.722, $439.931, $812.50, $232.953, $662.50, $687.50, $468.75 and $452.778 respectively.

[5] Reflects dividends declared per share on the Company’s Series A, Series B, Series F, Series K, Series L and Series M Non-Cumulative Perpetual Preferred Stock of $884.722, $221.181, $406.25, $343.75, $234.375 and $250.00 respectively.