Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Activities
Net income attributable to U.S. Bancorp	$ 1,675	$ 1,473
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	341	345
Depreciation and amortization of premises and equipment	74	73
Amortization of intangibles	39	44
(Gain) loss on sale of loans held for sale	(62)	(116)
(Gain) loss on sale of securities and other assets	(78)	(146)
Loans originated for sale in the secondary market, net of repayments	(7,762)	(7,802)
Proceeds from sales of loans held for sale	7,975	9,968
Other, net	(768)	(649)
Net cash provided by operating activities	1,434	3,190
Investing Activities
Proceeds from sales of available-for-sale investment securities	944	828
Proceeds from maturities of held-to-maturity investment securities	1,598	2,085
Proceeds from maturities of available-for-sale investment securities	2,771	2,786
Purchases of held-to-maturity investment securities	(3,310)	(2,500)
Purchases of available-for-sale investment securities	(2,068)	(4,253)
Net decrease (increase) in loans outstanding	1,417	(250)
Proceeds from sales of loans	330	439
Purchases of loans	(1,135)	(932)
Other, net	(465)	76
Net cash provided by (used in) investing activities	82	(1,721)
Financing Activities
Net (decrease) increase in deposits	(2,689)	2,283
Net increase (decrease) in short-term borrowings	1,052	(1,780)
Proceeds from issuance of long-term debt	2,110	3,162
Principal payments or redemption of long-term debt	(1,137)	(473)
Proceeds from issuance of preferred stock		993
Proceeds from issuance of common stock	40	112
Repurchase of common stock	(588)	(594)
Cash dividends paid on preferred stock	(64)	(80)
Cash dividends paid on common stock	(499)	(478)
Net cash (used in) provided by financing activities	(1,775)	3,145
Change in cash and due from banks	(259)	4,614
Cash and due from banks at beginning of period	19,505	15,705
Cash and due from banks at end of period	$ 19,246	$ 20,319