Debt Under Vehicle Programs and Borrowing Arrangements (Schedule of Debt Issued by AESOP) (Details) $ in Millions	Sep. 30, 2025 USD ($)
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.33%
Amount Issued	$ 1,708
Avis Budget Rental Car Funding Program August 2027
Debt Instrument [Line Items]
Weighted Average Interest Rate	7.31%
Amount Issued	$ 41
Avis Budget Rental Car Funding Program April 2028
Debt Instrument [Line Items]
Weighted Average Interest Rate	7.59%
Amount Issued	$ 75
Avis Budget Rental Car Funding Program June 2028
Debt Instrument [Line Items]
Weighted Average Interest Rate	7.31%
Amount Issued	$ 75
Avis Budget Rental Car Funding Program December 2028
Debt Instrument [Line Items]
Weighted Average Interest Rate	7.37%
Amount Issued	$ 72
Avis Budget Rental Car Funding Program February 2029
Debt Instrument [Line Items]
Weighted Average Interest Rate	7.52%
Amount Issued	$ 95
Avis Budget Rental Car Funding Program August 2028
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.94%
Amount Issued	$ 250
Avis Budget Rental Car Funding Program August 2030
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.26%
Amount Issued	$ 400
Avis Budget Rental Car Funding Program February 2029
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.27%
Amount Issued	$ 250
Avis Budget Rental Car Funding Program February 2031
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.52%
Amount Issued	$ 450