Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities
Net income attributable to U.S. Bancorp	$ 4,380	$ 4,227
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	1,063	1,439
Depreciation and amortization of premises and equipment	222	212
Amortization of intangibles	167	208
Provision for deferred income taxes	(38)	29
(Gain) loss on sale of loans held for sale	(864)	(1,982)
(Gain) loss on sale of securities and other assets	(42)	(198)
Loans originated for sale in the secondary market, net of repayments	(49,411)	(60,331)
Proceeds from sales of loans held for sale	53,845	59,052
Other, net	(665)	1,219
Net cash provided by operating activities	8,657	3,875
Investing Activities
Proceeds from sales of available-for-sale investment securities	766	1,753
Proceeds from maturities of held-to-maturity investment securities	6,854	4,005
Proceeds from maturities of available-for-sale investment securities	8,395	11,664
Purchases of held-to-maturity investment securities	(9,439)	(8,003)
Purchases of available-for-sale investment securities	(9,381)	(12,065)
Net increase in loans outstanding	(8,495)	(9,518)
Proceeds from sales of loans	620	1,614
Purchases of loans	(1,883)	(2,139)
Acquisitions, net of cash acquired		94
Other, net	(100)	(668)
Net cash used in investing activities	(12,663)	(13,263)
Financing Activities
Net increase in deposits	12,533	13,099
Net decrease in short-term borrowings	(174)	(2,616)
Proceeds from issuance of long-term debt	198	4,553
Principal payments or redemption of long-term debt	(2,380)	(10,271)
Proceeds from issuance of preferred stock	487	2,163
Proceeds from issuance of common stock	331	342
Redemption of preferred stock	(500)
Repurchase of common stock	(1,779)	(1,343)
Cash dividends paid on preferred stock	(193)	(139)
Cash dividends paid on common stock	(1,154)	(980)
Net cash provided by financing activities	7,369	4,808
Change in cash and due from banks	3,363	(4,580)
Cash and due from banks at beginning of period	8,252	13,962
Cash and due from banks at end of period	$ 11,615	$ 9,382