Debt Under Vehicle Programs and Borrowing Arrangements (Debt Issued by AESOP) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.46%
Amount Issued	$ 2,442
Debt under vehicle programs	$ 17,893	$ 18,937
Repurchase Facility
Debt Instrument [Line Items]
Debt interest, tenor period	180 days
Debt under vehicle programs	$ 116
Avis Budget Rental Car Funding Program June 2029
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.51%
Amount Issued	$ 1,200
Avis Budget Rental Car Funding Program April 2026
Debt Instrument [Line Items]
Weighted Average Interest Rate	6.24%
Amount Issued	$ 53
Avis Budget Rental Car Funding Program October 2026
Debt Instrument [Line Items]
Weighted Average Interest Rate	6.18%
Amount Issued	$ 37
Avis Budget Rental Car Funding Program April 2028
Debt Instrument [Line Items]
Weighted Average Interest Rate	6.23%
Amount Issued	$ 52
Avis Budget Rental Car Funding Program October 2027
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.26%
Amount Issued	$ 400
Avis Budget Rental Car Funding Program December 2029
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.35%
Amount Issued	$ 700