Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Year ended December 31
(Dollars in millions)	2012			2011			2010
Current income tax expense/(benefit):
Federal		$553			($4	)		$—
State	26			—			(14		)
Total		$579			($4	)		($14	)
Deferred income tax expense/(benefit):
Federal		$229			$81			($177	)
State	(35		)	2			6
Total	194			83			(171		)
Total income tax expense/(benefit)		$773			$79			($185	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Year ended December 31
	2012					2011					2010
(Dollars in millions)	Amount			Percent of Pre-Tax Income		Amount			Percent of Pre-Tax Income		Amount			Percent of Pre-Tax Income 1
Income tax expense at federal statutory rate		$956		35.0	%		$254		35.0	%		$1		35.0	%
Increase (decrease) resulting from:
Tax-exempt interest	(77		)	(2.8	)	(72		)	(9.9	)	(74		)	NM
Dividends received deduction	(8		)	(0.3	)	(14		)	(1.9	)	(13		)	NM
Income tax credits, net	(83		)	(3.0	)	(88		)	(12.1	)	(88		)	NM
State income taxes, net	(6		)	(0.2	)	2			0.2		12			NM
Completion of audit examinations by taxing authorities	—			—		—			—		(20		)	NM
Other	(9		)	(0.4	)	(3		)	(0.4	)	(3		)	NM
Total income tax expense/(benefit) and rate		$773		28.3	%		$79		10.9	%		($185	)	NM

¹ "NM" - Calculated percentage was not considered to be meaningful

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

(Dollars in millions)	2012			2011
DTAs:
Allowance for loan and lease losses		$861			$906
Accrued expenses	685			516
State NOL and other carryforwards (net of federal benefit)	209			197
Federal credits and other carryforwards	—			266
Other	173			168
Total gross DTAs	1,928			2,053
Valuation allowance	(56		)	(65		)
Total DTAs		$1,872			$1,988
DTLs:
Net unrealized gains in AOCI		$197			$995
Leasing	786			728
Compensation and employee benefits	74			100
MSRs	623			613
Loans	72			47
Goodwill and intangible assets	141			121
Fixed assets	196			177
Other	62			95
Total DTLs		$2,151			$2,876
Net DTL		($279	)		($888	)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

(Dollars in millions)	2012			2011
Balance at January 1		$133			$132
Increases in UTBs related to prior years	1			12
Decreases in UTBs related to prior years	(2		)	(12		)
Increases in UTBs related to the current year	45			8
Decreases in UTBs related to settlements	(34		)	(1		)
Decreases in UTBs related to lapse of the applicable statutes of limitations	(6		)	(6		)
Balance at December 31		$137			$133