Debt under Vehicle Programs and Borrowing Arrangements - Schedule Of Debt Under Vehicle Programs (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total	$ 13,809	$ 11,390
Deferred financing fees	44	48
Americas – Debt due to Avis Budget Rental Car Funding
Debt Instrument [Line Items]
Total	11,322	8,889
Americas – Debt borrowings
Debt Instrument [Line Items]
Total	598	612
International – Debt borrowings
Debt Instrument [Line Items]
Total	1,700	1,757
International – Finance leases
Debt Instrument [Line Items]
Total	176	177
Other
Debt Instrument [Line Items]
Total	65	3
Deferred financing fees
Debt Instrument [Line Items]
Deferred financing fees	(52)	(48)
Deferred financing fees | Vehicle-backed debt due to Avis Budget Rental Car Funding
Debt Instrument [Line Items]
Deferred financing fees	$ 47	$ 41