Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities
Net income attributable to U.S. Bancorp	$ 2,912	$ 2,753
Adjustments to reconcile net income to net cash provided by operating activities
Provision for credit losses	765	951
Depreciation and amortization of premises and equipment	148	140
Amortization of intangibles	112	141
Provision for deferred income taxes	(106)	(26)
(Gain) loss on sale of loans held for sale	(874)	(1,210)
(Gain) loss on sale of securities and other assets	(26)	(80)
Loans originated for sale in the secondary market, net of repayments	(36,607)	(39,559)
Proceeds from sales of loans held for sale	40,097	39,115
Other, net	95	1,403
Net cash provided by operating activities	6,516	3,628
Investing Activities
Proceeds from sales of available-for-sale investment securities	679	345
Proceeds from maturities of held-to-maturity investment securities	4,688	2,012
Proceeds from maturities of available-for-sale investment securities	6,074	7,889
Purchases of held-to-maturity investment securities	(5,026)	(6,096)
Purchases of available-for-sale investment securities	(7,731)	(6,861)
Net increase in loans outstanding	(5,139)	(6,487)
Proceeds from sales of loans	533	561
Purchases of loans	(1,312)	(1,472)
Acquisitions, net of cash acquired		94
Other, net	(109)	(259)
Net cash used in investing activities	(7,343)	(10,274)
Financing Activities
Net increase in deposits	2,385	10,183
Net increase (decrease) in short-term borrowings	(123)	215
Proceeds from issuance of long-term debt	131	2,620
Principal payments or redemption of long-term debt	(1,374)	(5,736)
Proceeds from issuance of preferred stock	487	2,163
Proceeds from issuance of common stock	169	191
Redemption of preferred stock	(500)
Repurchase of common stock	(1,119)	(863)
Cash dividends paid on preferred stock	(133)	(76)
Cash dividends paid on common stock	(730)	(610)
Net cash provided by (used in) financing activities	(807)	8,087
Change in cash and due from banks	(1,634)	1,441
Cash and due from banks at beginning of period	8,252	13,962
Cash and due from banks at end of period	$ 6,618	$ 15,403