Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Debt Under Vehicle Programs) (Detail) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Debt under vehicle programs	$ 14,777	$ 13,809
Deferred financing fees	43	44
Americas - Debt due to Avis Budget Rental Car Funding
Debt Instrument [Line Items]
Debt under vehicle programs	12,259	11,322
Americas - Debt borrowings
Debt Instrument [Line Items]
Debt under vehicle programs	739	598
International - Debt borrowings
Debt Instrument [Line Items]
Debt under vehicle programs	1,608	1,700
International - Finance leases
Debt Instrument [Line Items]
Debt under vehicle programs	175	176
Other
Debt Instrument [Line Items]
Debt under vehicle programs	53	65
Deferred Financing Fees
Debt Instrument [Line Items]
Deferred financing fees	(57)	(52)
Avis Budget Rental Car Funding | Deferred Financing Fees
Debt Instrument [Line Items]
Deferred financing fees	$ 53	$ 47