Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) $ in Millions	Jun. 30, 2019 USD ($)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 13,800
Outstanding Borrowings (b)	12,506
Available Capacity	1,294
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	9,526
Outstanding Borrowings (b)	8,951
Available Capacity	575
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	10,400
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	1,008
Outstanding Borrowings (b)	986
Available Capacity	22
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,100
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	3,017
Outstanding Borrowings (b)	2,342
Available Capacity	675
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	2,700
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	248
Outstanding Borrowings (b)	226
Available Capacity	22
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	200
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	1
Outstanding Borrowings (b)	1
Available Capacity	$ 0