Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Debt Under Vehicle Programs) (Detail) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Debt under vehicle programs	$ 12,099	$ 11,390
Deferred financing fees	(53)	(48)
Americas - Debt due to Avis Budget Rental Car Funding
Debt Instrument [Line Items]
Debt under vehicle programs	9,779	8,889
Americas - Debt borrowings
Debt Instrument [Line Items]
Debt under vehicle programs	615	612
International - Debt borrowings
Debt Instrument [Line Items]
Debt under vehicle programs	1,573	1,757
International - Finance leases
Debt Instrument [Line Items]
Debt under vehicle programs	156	177
Other
Debt Instrument [Line Items]
Debt under vehicle programs	19	3
Deferred financing fees
Debt Instrument [Line Items]
Deferred financing fees	(43)	(48)
Avis budget rental car funding | Deferred financing fees
Debt Instrument [Line Items]
Deferred financing fees	$ (36)	$ (41)