Income Taxes (Details 4) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax assets:
Allowance for credit losses	$ 148	$ 142
Tax carryforwards	73	48
Deferred tax assets, gross	221	190
Deferred income tax liabilities (primarily lease basis differences)	(693)	(574)
Valuation allowance for deferred income tax assets	(10)	(10)
Deferred income tax on translation adjustment	(368)	(343)
Deferred income taxes, net	$ (850)	$ (737)