Leased Vehicles (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property Subject to or Available for Operating Lease, Net [Abstract]
Property Subject to or Available for Operating Lease, Gross	$ 4,684	$ 2,283
Manufacturing incemtives	(659)	(307)
Leased Vehicles Accounted For Operating Leases Net Of Manufacturing Incentives	4,025	1,976	887	52
Property Subject to or Available for Operating Lease, Accumulated Depreciation	(642)	(273)
Leased vehicles, net	$ 3,383	$ 1,703