Net Investment in Operating Leases (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 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	$ 32,278		$ 29,673
Accumulated depreciation	(5,254)		(4,545)
Net investment in operating leases before allowance for credit losses	27,024		25,128	$ 24,557
Allowance for credit losses	(63)	$ (63)	(49)	(47)	$ (45)	$ (38)
Net investment in operating leases	26,961		25,079	$ 24,510
Securitization Transactions [Member]
Property Subject to or Available for Operating Lease [Line Items]
Net investment in operating leases	$ 10,000		$ 13,300