Vehicle Rental Activities (Components Of The Company's Vehicles) (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Vehicle Rental Activities [Abstract]
Rental vehicles	$ 14,298	$ 11,006
Less: Accumulated depreciation	(1,398)	(1,465)
Rental Vehicles Net, Total	12,900	9,541
Vehicles held for sale	495	674
Vehicles, net	13,395	$ 10,215
Accounts Payable, Other, Current	577		$ 498
Other Receivables	$ 217		$ 170