Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Debt Under Vehicle Programs) (Detail) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	$ 9,996,000,000	$ 8,116,000,000
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	8,800,000,000
Debt under vehicle programs	7,239,000,000	6,340,000,000
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,100,000,000
Debt under vehicle programs	766,000,000	746,000,000
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	2,200,000,000
Debt under vehicle programs	1,689,000,000	685,000,000
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	300,000,000
Debt under vehicle programs	296,000,000	314,000,000
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	$ 6,000,000	$ 31,000,000