Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net income attributable to U.S. Bancorp	$ 2,280	$ 1,171
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	(827)	993
Depreciation and amortization of premises and equipment	84	87
Amortization of intangibles	38	42
(Gain) loss on sale of loans held for sale	(213)	(303)
(Gain) loss on sale of securities and other assets	(66)	(120)
Loans originated for sale, net of repayments	(20,928)	(10,882)
Proceeds from sales of loans held for sale	20,397	12,032
Other, net	172	(666)
Net cash provided by operating activities	937	2,354
Investing Activities
Proceeds from sales of available-for-sale investment securities	1,062	9,916
Proceeds from maturities of available-for-sale investment securities	12,550	5,649
Purchases of available-for-sale investment securities	(36,182)	(14,937)
Net decrease (increase) in loans outstanding	3,562	(22,272)
Proceeds from sales of loans	1,062	575
Purchases of loans	(1,600)	(893)
Net (increase) decrease in securities purchased under agreements to resell	(26)	788
Other, net	106	(1,085)
Net cash used in investing activities	(19,466)	(22,259)
Financing Activities
Net increase in deposits	3,991	32,938
Net increase in short-term borrowings	332	2,621
Proceeds from issuance of long-term debt	69	11,271
Principal payments or redemption of long-term debt	(3,830)	(156)
Proceeds from issuance of preferred stock	730
Proceeds from issuance of common stock	17	9
Repurchase of preferred stock	(500)
Repurchase of common stock	(646)	(1,660)
Cash dividends paid on preferred stock	(76)	(71)
Cash dividends paid on common stock	(637)	(647)
Net cash (used in) provided by financing activities	(550)	44,305
Change in cash and due from banks	(19,079)	24,400
Cash and due from banks at beginning of period	62,580	22,405
Cash and due from banks at end of period	$ 43,501	$ 46,805