Securities (Tables)

6 Months Ended

Jun. 30, 2013

Investments Debt And Equity Securities [Abstract]

Amortized Cost, Gross Unrealized Gains, Gross Unrealized Losses, and Fair Values of Securities

	June 30, 2013
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. government sponsored agencies	$	362	$	2	$	—	$	364
Residential mortgage-backed securities:
U.S. government agency and government sponsored agencies		14,930		57		314		14,673
Privately issued		330		4		6		328
Commercial mortgage-backed securities		3,904		24		178		3,750
Collateralized loan obligations (CLOs)		2,414		33		2		2,445
Asset-backed and other		79		1		—		80
Asset Liability Management securities		22,019		121		500		21,640
Other debt securities:
Direct bank purchase bonds		1,708		33		38		1,703
Other		155		3		6		152
Equity securities		15		—		—		15
Total securities available for sale	$	23,897	$	157	$	544	$	23,510

	December 31, 2012
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. government-sponsored agencies	$	866	$	19	$	—	$	885
Residential mortgage-backed securities:
U.S. government agency and government-sponsored agencies		13,104		232		3		13,333
Privately issued		445		8		10		443
Commercial mortgage-backed securities		2,863		114		6		2,971
CLOs		1,996		7		44		1,959
Asset-backed and other		145		1		—		146
Asset Liability Management securities		19,419		381		63		19,737
Other debt securities:
Direct bank purchase bonds		1,482		27		71		1,438
Other		156		6		4		158
Equity securities		19		—		—		19
Total securities available for sale	$	21,076	$	414	$	138	$	21,352

Securities Available for Sale with Continuous Unrealized Loss

	June 30, 2013
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Residential mortgage-backed securities:
U.S. government agency and government sponsored agencies	$	11,885	$	314	$	1	$	—	$	11,886	$	314
Privately issued		88		2		68		4		156		6
Commercial mortgage-backed securities		2,851		178		—		—		2,851		178
CLOs		233		1		27		1		260		2
Asset-backed and other		5		—		1		—		6		—
Asset Liability Management securities		15,062		495		97		5		15,159		500
Other debt securities:
Direct bank purchase bonds		1,131		38		—		—		1,131		38
Other		55		1		37		5		92		6
Total securities available for sale	$	16,248	$	534	$	134	$	10	$	16,382	$	544

	December 31, 2012
	Less than 12 months				12 months or more				Total
(Dollars in millions)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Residential mortgage-backed securities:
U.S. government agency and government sponsored agencies	$	1,152	$	3	$	13	$	—	$	1,165	$	3
Privately issued		32		—		137		10		169		10
Commercial mortgage-backed securities		675		6		—		—		675		6
CLOs		168		1		980		43		1,148		44
Asset-backed and other		32		—		3		—		35		—
Asset Liability Management securities		2,059		10		1,133		53		3,192		63
Other debt securities:
Direct bank purchase bonds		1,019		71		—		—		1,019		71
Other		34		3		13		1		47		4
Total securities available for sale	$	3,112	$	84	$	1,146	$	54	$	4,258	$	138

Fair Value of Debt Securities Available for Sale by Contractual Maturity

	June 30, 2013
(Dollars in millions)	One Year or Less		Over One Year Through Five Years		Over Five Years Through Ten Years		Over Ten Years		Total Fair Value
U.S. government sponsored agencies	$	364	$	—	$	—	$	—	$	364
Residential mortgage-backed securities:
U.S. government agency and government sponsored agencies		5		87		819		13,762		14,673
Privately issued		—		—		6		322		328
Commercial mortgage-backed securities		—		—		921		2,829		3,750
CLOs		—		404		647		1,394		2,445
Asset-backed and other		—		71		9		—		80
Asset Liability Management securities		369		562		2,402		18,307		21,640
Other debt securities
Direct bank purchase bonds		90		235		974		404		1,703
Other		—		32		21		99		152
Total debt securities available for sale	$	459	$	829	$	3,397	$	18,810	$	23,495

Proceeds from Sales of Securities Available for Sale and Gross Realized Gains and Losses

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
(Dollars in millions)	2013		2012		2013		2012
Proceeds from sales	$	487	$	2,873	$	5,585	$	4,124
Gross realized gains		27		30		126		49
Gross realized losses		—		1		—		1

Schedule of Held to Maturity Securities Recognized and Not Recognized in Other Comprehensive Income (OCI) and Fair Values

	June 30, 2013
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
CLOs	$	16	$	—	$	2	$	14	$	3	$	—	$	17
U.S. government agency and government sponsored agencies—residential mortgage backed securities		888		3		—		891		—		17		874
Total securities held to maturity	$	904	$	3	$	2	$	905	$	3	$	17	$	891

	December 31, 2012
			Recognized in OCI						Not Recognized in OCI
(Dollars in millions)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Amount		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
CLOs	$	118	$	—	$	17	$	101	$	20	$	—	$	121
U.S. government agency and government sponsored agencies—residential mortgage backed securities		997		5		—		1,002		12		—		1,014
Total securities held to maturity	$	1,115	$	5	$	17	$	1,103	$	32	$	—	$	1,135

Securities Held to Maturity with Continuous Unrealized Loss Position

	June 30, 2013
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
CLOs	$	—	$	—	$	—	$	17	$	2	$	—	$	17	$	2	$	—
U.S. government agency and government sponsored agencies—residential mortgage backed securities		874		—		17		—		—		—		874		—		17
Total securities held to maturity	$	874	$	—	$	17	$	17	$	2	$	—	$	891	$	2	$	17

	December 31, 2012
	Less than 12 months						12 months or more						Total
			Unrealized Losses						Unrealized Losses						Unrealized Losses
(Dollars in millions)	Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI		Fair Value		Recognized in OCI		Not Recognized in OCI
CLOs	$	—	$	—	$	—	$	121	$	17	$	—	$	121	$	17	$	—

Carrying Amount and Fair Value of Securities Held to Maturity by Contractual Maturity

	June 30, 2013
	Over One Year Through Five Years				Over Ten Years				Total
(Dollars in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
CLOs	$	14	$	17	$	—	$	—	$	14	$	17
U.S. government agency and government sponsored agencies—residential mortgage backed securities		—		—		891		874		891		874
Total securities held to maturity	$	14	$	17	$	891	$	874	$	905	$	891