Vehicle Rental Activities (Components Of The Company's Vehicles) (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Vehicle Rental Activities [Abstract]
Rental vehicles	$ 12,403	$ 11,195
Less: Accumulated depreciation	(1,521)	(1,500)
Rental Vehicles Net, Total	10,882	9,695
Vehicles held for sale	842	963
Vehicles, net	11,724	10,658
Accounts Payable, Other, Current	164	183
Other Receivables	$ 586	$ 635