Net Investments in Operating Leases (Details) (USD $)	3 Months Ended							12 Months Ended					12 Months Ended		3 Months Ended								12 Months Ended
	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 Securitization Transactions [Member]	Dec. 31, 2012 Securitization Transactions [Member]	Dec. 31, 2012 Net Investment in Operating Leases [Member]	Dec. 31, 2011 Net Investment in Operating Leases [Member]	Dec. 31, 2013 Lease Interest Supplements and Acquisition Costs [Member]	Sep. 30, 2013 Lease Interest Supplements and Acquisition Costs [Member]	Jun. 30, 2013 Lease Interest Supplements and Acquisition Costs [Member]	Mar. 31, 2013 Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2012 Lease Interest Supplements and Acquisition Costs [Member]	Sep. 30, 2012 Lease Interest Supplements and Acquisition Costs [Member]	Jun. 30, 2012 Lease Interest Supplements and Acquisition Costs [Member]	Mar. 31, 2012 Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2012 Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2011 Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2012 Operating Lease [Member] Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2011 Operating Lease [Member] Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2012 Interest Supplements and other support costs reclassification [Member]	Dec. 31, 2011 Interest Supplements and other support costs reclassification [Member]	Dec. 31, 2012 Interest Supplements and other support costs reclassification [Member] Operating Lease [Member] Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2011 Interest Supplements and other support costs reclassification [Member] Operating Lease [Member] Lease Interest Supplements and Acquisition Costs [Member]	Dec. 31, 2012 Other Liabilities and Deferred Income [Member]
Property Subject to or Available for Operating Lease [Line Items]
Length of lease contract								60 months or less
Vehicles, at cost, including initial direct costs				$ 15,609,000,000				$ 21,092,000,000	$ 15,609,000,000
Less: Accumulated depreciation				(2,033,000,000)				(2,792,000,000)	(2,033,000,000)
Net investment in operating leases before allowance for credit losses				13,576,000,000				18,300,000,000	13,576,000,000
Less: Allowance for credit losses				(23,000,000)				(23,000,000)	(23,000,000)	(40,000,000)
Net investment in operating leases				13,553,000,000				18,277,000,000	13,553,000,000		8,100,000,000	6,300,000,000
Operating Leases, Future Minimum Payments Receivable [Abstract]
2014								2,569,000,000
2015								2,175,000,000
2016								1,536,000,000
2017								206,000,000
2018								5,000,000
Deferred Interest Supplements and Residual Support Payments on Net Investment in Operating Leases													(1,100,000,000)																		1,100,000,000
Financing Revenue Reclassification	201,000,000	172,000,000	161,000,000	176,000,000	181,000,000	174,000,000	162,000,000		(693,000,000)	(659,000,000)					0	201,000,000	172,000,000	161,000,000	176,000,000	181,000,000	174,000,000	162,000,000	693,000,000	659,000,000	(693,000,000)	(659,000,000)	(2,401,000,000)	(2,800,000,000)	73,000,000	58,000,000
Net Change in Cash Provided by/Used in Investing Activities									1,914,000,000	1,988,000,000			1,000,000,000	1,000,000,000
Net Change in Cash Provided by Used in Operating Activities									$ (1,914,000,000)	$ (1,988,000,000)			$ 1,000,000,000	$ 1,000,000,000