Leased Vehicles Leased Vehicles Summary (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Leased Vehicles Summary [Line Items]
Leases Acquired - Acquisition	$ 9		$ 9
Leased Vehicles Accounted For Operating Leases Net Of Manufacturing Incentives			1,976
Leased Vehicles Accounted For Operating Leases Net Of Manufacturing Incentives	3,081		3,081
Successor [Member]
Leased Vehicles Summary [Line Items]
Leased Vehicles Accounted For Operating Leases Net Of Manufacturing Incentives	2,444	1,210	1,976	887
Leased Vehicles Purchased	1,454	394	834	778
Leased Vehicles Returned (End of Term)	(106)	(12)	(54)	(26)
Leased Vehicles Returned (Default)	(9)	(1)	(5)	(2)
Manufacturing Incentives	(197)	(55)	(115)	(107)
Foreign Currency Translation On Leases	(46)	(9)	(32)	(3)
Leased Vehicles Accounted For Operating Leases Net Of Manufacturing Incentives	$ 3,081	$ 1,527	$ 3,081	$ 1,527