Assets and Liabilities of Businesses Held For Sale and Discontinued Operations (Other Financial Services) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended									3 Months Ended	12 Months Ended						3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Consumer Russia [Member]	Dec. 31, 2012 Consumer Russia [Member]	Dec. 31, 2011 Consumer Russia [Member]	Dec. 31, 2013 Trailer Services [Member]	Dec. 31, 2012 Trailer Services [Member]	Dec. 31, 2011 Trailer Services [Member]	Sep. 30, 2012 Consumer Ireland [Member]	Dec. 31, 2013 Consumer Ireland [Member]	Dec. 31, 2012 Consumer Ireland [Member]	Dec. 31, 2011 Consumer Ireland [Member]	Dec. 31, 2013 Australian Home Lending [Member]	Dec. 31, 2012 Australian Home Lending [Member]	Dec. 31, 2011 Australian Home Lending [Member]	Mar. 31, 2011 Consumer Singapore [Member]	Dec. 31, 2013 Consumer Singapore [Member]	Dec. 31, 2012 Consumer Singapore [Member]	Dec. 31, 2011 Consumer Singapore [Member]	Mar. 31, 2011 Consumer RV Marine [Member]	Dec. 31, 2013 Consumer RV Marine [Member]	Dec. 31, 2012 Consumer RV Marine [Member]	Dec. 31, 2011 Consumer RV Marine [Member]	Jun. 30, 2011 Consumer Mexico [Member]	Dec. 31, 2013 Consumer Mexico [Member]	Dec. 31, 2012 Consumer Mexico [Member]	Dec. 31, 2011 Consumer Mexico [Member]
Financial Information For Discontinued Operations [Line Items]
Revenues from discontinued operations									$ 186	$ 190	$ 1,074	$ 260	$ 276	$ 280	$ 271	$ 399	$ 464			$ 7	$ 13		$ 4	$ 250		$ 1		$ 30			$ 1	$ 11			$ 2	$ 67
Discontinued Operation Revenue Insignificant Amount																			insignificant amount			insignificant amount					insignificant amount			insignificant amount				insignificant amount
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent									(2,054)	(1,130)	30	(193)	33	87	(2)	22	17		6	(195)	(153)	14	6	(65)		1	2	333		(1)		2		(11)	(12)	30
Income (Loss) From Discontinued Operations Net Of Tax Attributable To Reporting Entity Insignificant Amount																															insignificant amount
Discontinued Operation, Provision for Loss (Gain) on Disposal, Net of Tax												170
Gain (loss) on disposal of discontinued operations									(1,781)	(743)	22				18					(121)				148				319
Proceeds from Divestiture of Businesses, Net of Cash Divested									528	227	8,950				528			227						4,577					2,365				1,943
Benefit (provision) for income taxes	1,092	(3)	(13)	(84)	(126)	(80)	(102)	(213)	992	(521)	(906)
Agreed Upon Selling Price Of Disposal Business																									$ 692