Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Payments for Repurchase of Common Stock	$ (50)		$ 0
Cash Flows from Operating Activities:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	738		537
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation, amortization, and accretion	365		382
Origination of Mortgage Servicing Rights (MSRs)	203		161
Provisions for credit losses and foreclosed property	389		706
Mortgage repurchase provision	29		330
Stock option compensation and amortization of restricted stock compensation	16		17
Net loss/(gain) on extinguishment of debt	0		(13)
Gain (Loss) on Sale of Securities, Net	2	[1]	32	[1]
Net gain on sale of assets	(350)		(501)
Net decrease/(increase) in loans held for sale	141		(121)
Net (increase)/decrease in other assets	(274)		(336)
Net increase/(decrease) in other liabilities	(125)		18
Net cash provided by operating activities	724		852
Cash Flows from Investing Activities:
Proceeds from maturities, calls, and paydowns of securities available for sale	3,233		3,179
Proceeds from sales of securities available for sale	497		2,210
Purchases of securities available for sale	(5,828)		(1,451)
Net (increase)/decrease in loans including purchases of loans	(1,608)		(4,312)
Proceeds from sales of loans	383		1,054
Capital expenditures	(43)		(112)
Payments related to acquisitions, including contingent consideration	0		9
Proceeds from Sale of Other Real Estate	249		313
Net cash (used in)/provided by investing activities	(3,117)		872
Cash Flows from Financing Activities:
Net (decrease)/increase in total deposits	(4,697)		481
Net increase/(decrease) in funds purchased, securities sold under agreements to repurchase, and other short-term borrowings	2,620		(1,938)
Proceeds from the issuance of long-term debt	609		4,000
Repayment of long-term debt	(99)		(1,991)
Common and preferred dividends paid	(99)		(60)
Stock option activity	11		14
Net cash provided by/(used in) financing activities	(1,705)		506
Net (decrease)/increase in cash and cash equivalents	(4,098)		2,230
Cash and cash equivalents at beginning of period	8,257		4,509
Cash and cash equivalents at end of period	4,159		6,739
Supplemental Disclosures:
Transfer of Loans Held-for-sale to Portfolio Loans	17		31
Loans transferred from loans to loans held for sale	144		1,116
Transfer to Other Real Estate	$ 134		$ 200

[1] Includes credit-related OTTI losses of $0 and $2 million that were unrealized losses reclassified from OCI, before taxes, for the three months ended June 30, 2013 and 2012, respectively, and $1 million and $4 million that were unrealized losses reclassified from OCI, before taxes, for the six months ended June 30, 2013 and 2012, respectively.