Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) $ in Millions	Jun. 30, 2017 USD ($)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 13,000
Outstanding Borrowings	11,409
Available Capacity	1,591
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	9,057
Outstanding Borrowings	7,912
Available Capacity	1,145
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	9,400
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	947
Outstanding Borrowings	924
Available Capacity	23
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,200
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	2,806
Outstanding Borrowings	2,410
Available Capacity	396
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)	188
Outstanding Borrowings	161
Available Capacity	27
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	200
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	2
Outstanding Borrowings	2
Available Capacity	$ 0