Debt under Vehicle Programs And Borrowing Arrangements - Additional Information (Detail) $ in Millions, € in Billions	108 Months Ended
	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 USD ($)	Nov. 30, 2022 USD ($)	Jul. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Apr. 30, 2022 USD ($)	Dec. 31, 2021	Nov. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	May 31, 2021 USD ($)
Debt Instrument [Line Items]
Leasing’s vehicles and related assets		$ 13,200
Asset-backed securities, at carrying value		$ 0					$ 660
Weighted average discount rate		1.82%						1.25%
Debt Due To Rental Car Funding August 2026
Debt Instrument [Line Items]
Asset-backed securities, at carrying value											$ 800
Avis Budget Rental Car Funding Program March 2024
Debt Instrument [Line Items]
Asset-backed securities, at carrying value										$ 96
Avis Budget Rental Car Funding Program September 2024
Debt Instrument [Line Items]
Asset-backed securities, at carrying value										105
Avis Budget Rental Car Funding Program August 2025
Debt Instrument [Line Items]
Asset-backed securities, at carrying value										$ 103
Debt Due To Rental Car Funding February2027
Debt Instrument [Line Items]
Asset-backed securities, at carrying value									$ 650
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 2023
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 February 2026
Debt Instrument [Line Items]
Asset-backed securities, at carrying value				$ 374
Avis Budget Rental Car Funding Program February 2028
Debt Instrument [Line Items]
Asset-backed securities, at carrying value				$ 389
Avis Budget Rental Car Funding Program April 2026
Debt Instrument [Line Items]
Asset-backed securities, at carrying value			$ 500
Avis Budget Rental Car Funding Program
Debt Instrument [Line Items]
Weighted average interest rate		4.07%						2.66%
Americas – Debt borrowings
Debt Instrument [Line Items]
Weighted average interest rate		4.26%						2.64%
European Rental Fleet Securitization
Debt Instrument [Line Items]
European credit facility | €	€ 1.7
International – Debt borrowings
Debt Instrument [Line Items]
Weighted average interest rate		3.92%						1.66%