Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 1,586	$ 1,917	$ 3,460	$ 5,453
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on investment securities available-for-sale	(305)	284	2,935	1,790
Changes in unrealized gains and losses on derivative hedges	27	(59)	(230)	(268)
Foreign currency translation	6	2	(6)	10
Reclassification to earnings of realized gains and losses	23	2	(42)	6
Income taxes related to other comprehensive income (loss)	63	(58)	(672)	(389)
Total other comprehensive income (loss)	(186)	171	1,985	1,149
Comprehensive income	1,400	2,088	5,445	6,602
Comprehensive (income) loss attributable to noncontrolling interests	(6)	(9)	(20)	(25)
Comprehensive income attributable to U.S. Bancorp	$ 1,394	$ 2,079	$ 5,425	$ 6,577