Debt under Vehicle Programs and Borrowing Arrangements - Schedule Of Available Funding Under Vehicle Programs (Detail) $ in Millions	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
Total Capacity	$ 21,352
Outstanding Borrowings	19,259
Available Capacity	2,093
Americas – Debt due to Avis Budget Rental Car Funding | Affiliated Entity
Debt Instrument [Line Items]
Total Capacity	15,417
Outstanding Borrowings	14,447
Available Capacity	970
Americas – Debt due to Avis Budget Rental Car Funding | Affiliated Entity | Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	14,700
Americas – Debt borrowings
Debt Instrument [Line Items]
Total Capacity	2,558
Outstanding Borrowings	2,202
Available Capacity	356
Americas – Debt borrowings | Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	2,500
International – Debt borrowings
Debt Instrument [Line Items]
Total Capacity	3,235
Outstanding Borrowings	2,480
Available Capacity	755
International – Debt borrowings | Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	3,200
International – Finance leases
Debt Instrument [Line Items]
Total Capacity	142
Outstanding Borrowings	130
Available Capacity	12
International – Finance leases | Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	$ 200