Vehicle Rental Activities - Components of Company's Vehicles (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Rental vehicles	$ 17,819	$ 14,612
Less: Accumulated depreciation	(2,211)	(1,911)
Rental Vehicles net, total	15,608	12,701
Vehicles held for sale	317	165
Vehicles, net investment in lease	36	0
Vehicles, net	15,961	12,866
Other accounts payables	265	142	$ 232
Receivables due from former subsidiaries	$ 212	$ 134	$ 162