Securities (Tables)

6 Months Ended

Jun. 30, 2013

Investments Debt And Equity Securities [Abstract]

Details of Securities

The amortized cost, unrealized gains and losses, and approximate fair value of our securities available for sale and held-to-maturity securities are presented in the following tables. Gross unrealized gains and losses represent the difference between the amortized cost and the fair value of securities on the balance sheet as of the dates indicated. Accordingly, the amount of these gains and losses may change in the future as market conditions change.

	June 30, 2013
in millions	Amortized   Cost		Gross   Unrealized   Gains		Gross   Unrealized   Losses		Fair   Value
SECURITIES AVAILABLE FOR SALE
States and political subdivisions	$	43	$	1		—	$	44
Collateralized mortgage obligations		12,503		213	$	113		12,603
Other mortgage-backed securities		555		32		3		584
Other securities		19		3		—		22
Total securities available for sale	$	13,120	$	249	$	116	$	13,253
HELD-TO-MATURITY SECURITIES
Collateralized mortgage obligations	$	4,732	$	16	$	50	$	4,698
Other securities		18		—		—		18
Total held-to-maturity securities	$	4,750	$	16	$	50	$	4,716
	December 31, 2012
in millions	Amortized   Cost		Gross   Unrealized   Gains		Gross   Unrealized   Losses		Fair   Value
SECURITIES AVAILABLE FOR SALE
States and political subdivisions	$	47	$	2		—	$	49
Collateralized mortgage obligations		11,148		316		—		11,464
Other mortgage-backed securities		491		47		—		538
Other securities		42		1		—		43
Total securities available for sale	$	11,728	$	366		—	$	12,094
HELD-TO-MATURITY SECURITIES
Collateralized mortgage obligations	$	3,913	$	61		—	$	3,974
Other securities		18		—		—		18
Total held-to-maturity securities	$	3,931	$	61		—	$	3,992
	June 30, 2012
in millions	Amortized   Cost		Gross   Unrealized   Gains		Gross   Unrealized   Losses		Fair   Value
SECURITIES AVAILABLE FOR SALE
States and political subdivisions	$	53	$	3		—	$	56
Collateralized mortgage obligations		12,098		379		—		12,477
Other mortgage-backed securities		597		55		—		652
Other securities		20		1	$	1		20
Total securities available for sale	$	12,768	$	438	$	1	$	13,205
HELD-TO-MATURITY SECURITIES
Collateralized mortgage obligations	$	4,334	$	44		—	$	4,378
Other securities		18		—		—		18
Total held-to-maturity securities	$	4,352	$	44		—	$	4,396

Available for Sale Securities (Unrealized Loss Position)

The following table summarizes our securities that were in an unrealized loss position as of June 30, 2013, December 31, 2012, and June 30, 2012.

	Duration of Unrealized Loss Position
	Less than 12 Months					12 Months or Longer					Total
			Gross					Gross					Gross
			Unrealized					Unrealized					Unrealized
in millions	Fair Value		Losses		(a)	Fair Value		Losses		(b)	Fair Value		Losses		(a)
June 30, 2013
Securities available for sale:
State and political divisions		—		—			—		—			—		—
Collateralized mortgage obligations	$	5,412	$	113			—		—		$	5,412	$	113
Other mortgage-backed securities		152		3			—		—			152		3
Other securities		3		—			—		—			3		—
Held-to-maturity:
Collateralized mortgage obligations		2,998		50			—		—			2,998		50
Total temporarily impaired securities	$	8,565	$	166			—		—		$	8,565	$	166
December 31, 2012
Securities available for sale:
Other securities	$	31		—		$	3		—		$	34		—
Total temporarily impaired securities	$	31		—		$	3		—		$	34		—
June 30, 2012
Securities available for sale:
Collateralized mortgage obligations	$	1		—			—		—		$	1		—
Other securities		12	$	1			—		—			12	$	1
Held-to-maturity:
Collateralized mortgage obligations		200		—			—		—			200		—
Total temporarily impaired securities	$	213	$	1			—		—		$	213	$	1

(a) There were less than $1 million of gross unrealized losses for the period ended December 31, 2012.

(b) There were less than $1 million of gross unrealized losses for the period ended June 30, 2013, December 31, 2012 and June 30, 2012.

Cumulative Credit Portion of Impairments on Debt Securities

As shown in the following table, we did not have any impairment losses recognized in earnings for the three months ended June 30, 2013.

Three months ended June 30, 2013
in millions
Balance at March 31, 2013	$	4
Impairment recognized in earnings		—
Balance at June 30, 2013	$	4

Available for Sale Securities Realized Gains and Losses

Realized gains and losses related to securities available for sale were as follows:

Six months ended June 30, 2013
in millions
Realized gains	—
Realized losses	—
Net securities gains (losses)	—

Securities by Maturity

Actual maturities may differ from expected or contractual maturities since borrowers have the right to prepay obligations with or without prepayment penalties.

	Securities Available for Sale				Held-to-Maturity Securities
June 30, 2013 in millions	Amortized   Cost		Fair   Value		Amortized   Cost		Fair   Value
Due in one year or less	$	650	$	660	$	10	$	10
Due after one through five years		12,207		12,335		4,740		4,706
Due after five through ten years		260		255		—		—
Due after ten years		3		3		—		—
Total	$	13,120	$	13,253	$	4,750	$	4,716