Debt Under Vehicle Programs and Borrowing Arrangements (Narrative) (Details) - USD ($) $ in Millions	Jul. 31, 2022	Jun. 30, 2022	May 31, 2022	Apr. 30, 2022
Debt Instrument [Line Items]
Asset-backed securities, at carrying value				$ 660
Weighted average interest rate			5.10%	3.96%
Avis Budget Rental Car Funding Program March 2025
Debt Instrument [Line Items]
Asset-backed securities, at carrying value			$ 87
Avis Budget Rental Car Funding Program March 2023
Debt Instrument [Line Items]
Asset-backed securities, at carrying value			68
Avis Budget Rental Car Funding Program September 2024
Debt Instrument [Line Items]
Asset-backed securities, at carrying value			$ 55
Avis Budget Rental Car Funding Program September 2022
Debt Instrument [Line Items]
Asset-backed securities, at carrying value		$ 800
Avis Budget Rental Car Funding Program June 2022
Debt Instrument [Line Items]
Asset-backed securities, at carrying value	$ 763
Weighted average interest rate	4.90%