Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating Activities
Net income attributable to U.S. Bancorp	$ 4,227	$ 3,522
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	1,439	1,846
Depreciation and amortization of premises and equipment	212	196
Amortization of intangibles	208	225
Provision for deferred income taxes	29	250
(Gain) loss on sale of loans held for sale	(1,982)	(469)
(Gain) loss on sale of securities and other assets	(198)	(13)
Loans originated for sale in the secondary market, net of repayments	(60,331)	(29,840)
Proceeds from sales of loans held for sale	59,052	33,091
Other, net	1,219	(53)
Net cash provided by operating activities	3,875	8,755
Investing Activities
Proceeds from sales of available-for-sale investment securities	1,753	926
Proceeds from maturities of held-to-maturity investment securities	4,005	714
Proceeds from maturities of available-for-sale investment securities	11,664	7,872
Purchases of held-to-maturity investment securities	(8,003)	(15,192)
Purchases of available-for-sale investment securities	(12,065)	(8,399)
Net increase in loans outstanding	(9,518)	(8,458)
Proceeds from sales of loans	1,614	454
Purchases of loans	(2,139)	(1,750)
Acquisitions, net of cash acquired	94	650
Other, net	(668)	(1,006)
Net cash used in investing activities	(13,263)	(24,189)
Financing Activities
Net increase in deposits	13,099	16,593
Net decrease in short-term borrowings	(2,616)	(644)
Proceeds from issuance of long-term debt	4,553	2,002
Principal payments or redemption of long-term debt	(10,271)	(3,048)
Proceeds from issuance of preferred stock	2,163	676
Proceeds from issuance of common stock	342	125
Repurchase of common stock	(1,343)	(383)
Cash dividends paid on preferred stock	(139)	(88)
Cash dividends paid on common stock	(980)	(578)
Net cash provided by financing activities	4,808	14,655
Change in cash and due from banks	(4,580)	(779)
Cash and due from banks at beginning of period	13,962	14,487
Cash and due from banks at end of period	$ 9,382	$ 13,708