Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) $ in Millions	Jun. 30, 2020 USD ($)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 13,429
Outstanding Borrowings (b)	10,585
Available Capacity	2,844
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	9,394
Outstanding Borrowings (b)	8,095
Available Capacity	1,299
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	8,100
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	882
Outstanding Borrowings (b)	765
Available Capacity	117
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	800
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	2,947
Outstanding Borrowings (b)	1,576
Available Capacity	1,371
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,600
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	205
Outstanding Borrowings (b)	148
Available Capacity	57
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	100
Other Debt Obligations [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	1
Outstanding Borrowings (b)	1
Available Capacity	$ 0