Assets and Liabilities of Businesses Held For Sale and Discontinued Operations (WMC and Other) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 01, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Roll forward of reserve and pending claims
Revenues from discontinued operations		$ 79	$ (17)	$ 109	$ (161)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		(83)	(107)	(313)	(857)
Gain (loss) on disposal of discontinued operations		93	(2)	307	457
Proceeds from Divestiture of Businesses, Net of Cash Divested				0	227
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		(83)	(107)	(313)	(857)
WMC Discontinued Operations [Member]
Financial Information For Discontinued Operations [Line Items]
Adjustment For Pending Claims For Unmet Representations And Warranties				167
Roll forward of reserve and pending claims
Reserve, beginning of period	800	787		633
Provision		18		172
Claim resolutions		(5)		(5)
Reserve, end of period		800		800
Pending claims, beginning of period	6,311	6,335		5,357	705
New claims		0		978
Claim resolutions		(24)		(24)
Pending claims, end of period		6,311		6,311
Percentage Increase To Estimates Of Future Loan Repurchase Requests		50.00%		50.00%
Percentage Increase To Estimated Loss On Loans Tendered		100.00%		100.00%
Increase To Reserve For Claims For Unmet Representations And Warranties For Adverse Effect In Assumptions		525		525
Number Of Lawsuits Involving Repurchase Claims On Loans				16
Number Of Securitizations Related To Lawsuits Involving repurchase Claims On Loans In Which Adverse Parties Are Securitization Trustees				15
Number Of Lawsuits Involving Repurchase Claims On Loans Based On Breach Of Contract Claims On Mortgage Loans				12
Number Of Lawsuits Involving Repurchase Claims On Loans Initiated By Divested Business				three
Number Of Litigation Claims That Are Samplings Based Claims				two
Sampling Based Litigation Claims Amount Of Mortgages		900		900
Number Of Litigation Claims Based On Alleged Failure To Provide Notice On Defective Loans Breach Of Corporate Representation And Warranty On Non Specific Claims for Recessionary Damages				ten
Liabilities Related To Remaining Litigation Claims		5,700		5,700
Statute Of Limitation Claims	600			1,000
Statute Of Limitation Litigation Claims				700
Revenues from discontinued operations		(13)	(117)	(167)	(475)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		(11)	(78)	(116)	(314)
Consumer Ireland [Member]
Roll forward of reserve and pending claims
Revenues from discontinued operations			1		7
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		6	(8)	7	(194)
Discontinued Operation Revenue Insignificant Amount		insignificant amount		insignificant amount
Gain (loss) on disposal of discontinued operations					121
Proceeds from Divestiture of Businesses, Net of Cash Divested			227
Trailer Services [Member]
Roll forward of reserve and pending claims
Revenues from discontinued operations		91	95	274	301
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		(9)	5	(19)	24
Gain (loss) on disposal of discontinued operations				$ 118