Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 695	$ 1,828	$ 1,874	$ 3,536
Other Comprehensive Income (Loss)
Changes in unrealized gains and losses on investment securities available-for-sale	453	721	3,240	1,506
Changes in unrealized gains and losses on derivative hedges		(135)	(257)	(209)
Foreign currency translation	1	(8)	(12)	8
Reclassification to earnings of realized gains and losses	(59)	(4)	(65)	4
Income taxes related to other comprehensive income (loss)	(100)	(145)	(735)	(331)
Total other comprehensive income (loss)	295	429	2,171	978
Comprehensive income	990	2,257	4,045	4,514
Comprehensive (income) loss attributable to noncontrolling interests	(6)	(7)	(14)	(16)
Comprehensive income attributable to U.S. Bancorp	$ 984	$ 2,250	$ 4,031	$ 4,498