Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 1,988	$ 695	$ 4,273	$ 1,874
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on investment securities available-for-sale	1,195	453	(2,183)	3,240
Changes in unrealized gains and losses on derivative hedges	14	0	113	(257)
Foreign currency translation	(1)	1	24	(12)
Reclassification to earnings of realized gains and losses	(11)	(59)	7	(65)
Income taxes related to other comprehensive income (loss)	(304)	(100)	515	(735)
Total other comprehensive income (loss)	893	295	(1,524)	2,171
Comprehensive income (loss)	2,881	990	2,749	4,045
Comprehensive (income) loss attributable to noncontrolling interests	(6)	(6)	(11)	(14)
Comprehensive income (loss) attributable to U.S. Bancorp	$ 2,875	$ 984	$ 2,738	$ 4,031