Assets and Liabilities of Businesses Held For Sale and Discontinued Operations (WMC and GE Industrial) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			1 Months Ended	3 Months Ended				3 Months Ended			3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011	May 03, 2012 WMC Discontinued Operations [Member]	Mar. 31, 2012 WMC Discontinued Operations [Member]	Mar. 31, 2011 WMC Discontinued Operations [Member]	Dec. 31, 2011 WMC Discontinued Operations [Member]	Dec. 31, 2010 WMC Discontinued Operations [Member]	Mar. 31, 2012 GE Industrial Discontinued Operations [Member]	Mar. 31, 2011 GE Industrial Discontinued Operations [Member]	Dec. 31, 2011 GE Industrial Discontinued Operations [Member]	Mar. 31, 2012 Consumer RV Marine [Member]	Mar. 31, 2011 Consumer RV Marine [Member]	Mar. 31, 2012 Consumer Mexico [Member]	Jun. 30, 2011 Consumer Mexico [Member]	Mar. 31, 2011 Consumer Mexico [Member]	Mar. 31, 2012 Consumer Singapore [Member]	Jun. 30, 2011 Consumer Singapore [Member]	Mar. 31, 2011 Consumer Singapore [Member]	Mar. 31, 2012 Australian Home Lending [Member]	Sep. 30, 2011 Australian Home Lending [Member]	Mar. 31, 2011 Australian Home Lending [Member]	Mar. 31, 2012 Consumer Ireland [Member]	Mar. 31, 2011 Consumer Ireland [Member]
Financial Information For Discontinued Operations [Line Items]
Pending Repurchase Claims Based Upon Representations And Warranties					$ 562		$ 705	$ 347
Additional Repurchase Claims Based Upon Representations And Warranties				689
Reserves Related to Unmet Contractual Representations and Warranties					140		143
Adverse Percentage Change In Assumptions That Would Effect Claims For Unmet Representations And Warranties	ten percent
Increase To Reserve For Claims For Unmet Representations And Warranties For Ten Percent Adverse Effect In Assumptions					25
Agreed Selling Price Of Business																					4,577
Revenues from discontinued operations					(7)							5		1		55			29	1		114	4	4
Discontinued Operation Revenue Insignificant Amount						insignificant amount						insignificant amount					insignificant amount
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(217)	35			9	2						(1)		(2)		16			7	2		37	188	21
Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity Insignificant Amount									insignificant amounts	insignificant amounts			insignificant amount				insignificant amount
Agreed Upon Selling Price Of Disposal Business																			692
Assets of Disposal Group, Including Discontinued Operation	1,341		1,721						9		52
Liabilities of Disposal Group, Including Discontinued Operation	1,384		1,629						158		158
Gain (loss) on disposal of discontinued operations																		319		(148)			(147)
Consideration Received For Sale Of Business													$ 2,365		$ 1,943