Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Cash Flows from Operating Activities:
Net income/(loss) including income attributable to noncontrolling interest	$ 260		$ 187
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation, amortization, and accretion	192		186
Origination of mortgage servicing rights	(83)		(88)
Provisions for credit losses and foreclosed property	362		490
Mortgage repurchase provision	175		80
Stock option compensation and amortization of restricted stock compensation	8		12
Net securities gains	(18)	[1]	(64)	[1]
Net gain on sale of assets	(252)		(17)
Net decrease/(increase) in loans held for sale	246		1,465
Net (increase)/decrease in other assets	(251)		(125)
Net increase/(decrease) in other liabilities	(537)		(221)
Net cash provided by operating activities	102		1,905
Cash Flows from Investing Activities:
Proceeds from maturities, calls, and paydowns of securities available for sale	1,506		1,158
Proceeds from sales of securities available for sale	670		9,413
Purchases of securities available for sale	(992)		(10,100)
Proceeds from maturities, calls, and paydowns of trading securities	0		77
Proceeds from sales of trading securities	0		102
Net (increase)/decrease in loans including purchases of loans	(1,296)		(304)
Proceeds from sales of loans	252		143
Capital expenditures	(48)		(1)
Proceeds from the sale of other assets	121		198
Net cash (used in)/provided by investing activities	213		686
Cash Flows from Financing Activities:
Net increase in total deposits	2,110		941
Net increase/(decrease) in funds purchased, securities sold under agreements to repurchase, and other short-term borrowings	(1,899)		301
Proceeds from the issuance of long-term debt	1,000		1,039
Repayment of long-term debt	(34)		(132)
Proceeds from Stock Options Exercised	2		0
Excess tax benefits from stock-based compensation	8		0
Proceeds from the issuance of common stock	0		1,016
Repurchase of preferred stock	0		(4,850)
Common and preferred dividends paid	(30)		(67)
Net cash provided by/(used in) financing activities	1,157		(1,752)
Net (decrease)/increase in cash and cash equivalents	1,472		839
Cash and cash equivalents at beginning of period	4,509		5,378
Cash and cash equivalents at end of period	5,981		6,217
Supplemental Disclosures:
Loans transferred from loans held for sale to loans	11		5
Loans transferred from loans to loans held for sale	429		122
Loans transferred from loans and loans held for sale to other real estate owned	96		201
Accretion of discount for preferred stock issued to the U.S. Treasury	$ 0		$ 80

[1] Includes credit-related other-than-temporary impairment losses of $2 million and $1 million for the three months ended March 31, 2012 and 2011, respectively. There were no non-credit related unrealized other-than-temporary impairment losses recorded in other comprehensive income, before taxes, for the three months ended March 31, 2012 and 2011.