Net Investment in Operating Leases (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Property Subject to or Available for Operating Lease [Line Items]
Length of lease contract	60 months or less
Vehicles, at cost	$ 31,865		$ 29,673
Accumulated depreciation	(5,041)		(4,545)
Net investment in operating leases before allowance for credit losses	26,824		25,128	$ 23,428
Allowance for credit losses	(63)	$ (53)	(49)	(45)	$ (41)	$ (38)
Net investment in operating leases	26,761		25,079	$ 23,383
Securitization Transactions [Member]
Property Subject to or Available for Operating Lease [Line Items]
Net investment in operating leases	$ 11,700		$ 13,300