Vehicle Rental Activities (Components Of The Company's Vehicles) (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Property, Plant and Equipment [Abstract]
Rental vehicles	$ 18,161	$ 14,612
Less: Accumulated depreciation	(2,116)	(1,911)
Rental Vehicles Net, Total	16,045	12,701
Vehicles held for sale	270	165
Vehicles, net	16,315	$ 12,866
Liabilities under vehicle programs	249		$ 485
Other receivables	$ 74		$ 104