Net Investment in Operating Leases (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
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	$ 28,674		$ 24,952
Less: Accumulated depreciation	(4,117)		(3,396)
Net investment in operating leases before allowance for credit losses	24,557		21,556	$ 20,947
Less: Allowance for credit losses	(47)	$ (45)	(38)	(31)	$ (26)	$ (23)
Net investment in operating leases	24,510		21,518	$ 20,916
Securitization Transactions [Member]
Property Subject to or Available for Operating Lease [Line Items]
Net investment in operating leases	$ 11,300		$ 9,600