Securities (Tables)

3 Months Ended

Mar. 31, 2012

Securities [Abstract]

Details of Securities

	March 31, 2012
in millions	Amortized   Cost		Gross   Unrealized   Gains		Gross   Unrealized   Losses		Fair   Value
SECURITIES AVAILABLE FOR SALE
States and political subdivisions	$	59	$	3		—	$	62
Collateralized mortgage obligations		13,405		440		—		13,845
Other mortgage-backed securities		653		61		—		714
Other securities		11		1		—		12
Total securities available for sale	$	14,128	$	505		—	$	14,633
HELD-TO-MATURITY SECURITIES
Collateralized mortgage obligations	$	3,001	$	33		—	$	3,034
Other securities		18		—		—		18
Total held-to-maturity securities	$	3,019	$	33		—	$	3,052
	December 31, 2011
in millions	Amortized   Cost		Gross   Unrealized   Gains		Gross   Unrealized   Losses		Fair   Value
SECURITIES AVAILABLE FOR SALE
States and political subdivisions	$	60	$	3		—	$	63
Collateralized mortgage obligations		14,707		455		—		15,162
Other mortgage-backed securities		715		63		—		778
Other securities		8		1		—		9
Total securities available for sale	$	15,490	$	522		—	$	16,012
HELD-TO-MATURITY SECURITIES
Collateralized mortgage obligations	$	2,091	$	24		—	$	2,115
Other securities		18		—		—		18
Total held-to-maturity securities	$	2,109	$	24		—	$	2,133
	March 31, 2011
in millions	Amortized   Cost		Gross   Unrealized   Gains		Gross   Unrealized   Losses		Fair   Value
SECURITIES AVAILABLE FOR SALE
U.S. Treasury, agencies and corporations	$	9		—		—	$	9
States and political subdivisions		148	$	2		—		150
Collateralized mortgage obligations		17,998		331	$	40		18,289
Other mortgage-backed securities		913		68		—		981
Other securities		14		5	$	—		19
Total securities available for sale	$	19,082	$	406	$	40	$	19,448
HELD-TO-MATURITY SECURITIES
States and political subdivisions	$	1		—		—	$	1
Other securities		18		—		—		18
Total held-to-maturity securities	$	19		—		—	$	19

Available for Sale Securities (Unrealized Loss Position)

	Duration of Unrealized Loss Position
	Less than 12 Months				12 Months or Longer				Total
in millions	Fair Value		Gross   Unrealized   Losses		Fair Value		Gross   Unrealized   Losses		Fair Value		Gross   Unrealized   Losses
March 31, 2012
Securities available for sale:
State and political divisions	$	1		—		—		—	$	1		—
Other securities		2		—		—		—		2		—
Total temporarily impaired securities	$	3		—		—		—	$	3		—
December 31, 2011
Securities available for sale:
Collateralized mortgage obligations	$	1		—		—		—	$	1		—
Other securities		3		—		—		—		3		—
Total temporarily impaired securities	$	4		—		—		—	$	4		—
March 31, 2011
Securities available for sale:
Collateralized mortgage obligations	$	3,819		40		—		—	$	3,819		40
Total temporarily impaired securities	$	3,819		40	$	—	$	—	$	3,819	$	40

Cumulative Credit Portion of Impairments on Debt Securities

Three months ended March 31, 2012
in millions
Balance at December 31, 2011	$	4
Impairment recognized in earnings		—
Balance at March 31, 2012	$	4

Available for Sale Securities Realized Gains and Losses

Three months ended March 31, 2012
in millions
Realized gains	—
Realized losses	—
Net securities gains (losses)	—

Securities by Maturity

	Securities Available for Sale				Held-to-Maturity Securities
March 31, 2012 in millions	Amortized   Cost		Fair   Value		Amortized   Cost		Fair   Value
Due in one year or less	$	693	$	707	$	5	$	5
Due after one through five years		13,355		13,840		3,014		3,047
Due after five through ten years		74		80		—		—
Due after ten years		6		6		—		—
Total	$	14,128	$	14,633	$	3,019	$	3,052