Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 2,034	$ 1,586	$ 6,307	$ 3,460
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on investment securities available-for-sale	(825)	(305)	(3,008)	2,935
Changes in unrealized gains and losses on derivative hedges	8	27	121	(230)
Foreign currency translation	(1)	6	23	(6)
Reclassification to earnings of realized gains and losses	27	23	34	(42)
Income taxes related to other comprehensive income (loss)	201	63	716	(672)
Total other comprehensive income (loss)	(590)	(186)	(2,114)	1,985
Comprehensive income (loss)	1,444	1,400	4,193	5,445
Comprehensive (income) loss attributable to noncontrolling interests	(6)	(6)	(17)	(20)
Comprehensive income (loss) attributable to U.S. Bancorp	$ 1,438	$ 1,394	$ 4,176	$ 5,425