Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Debt Under Vehicle Programs) (Detail) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	$ 10,100,000,000	$ 8,860,000,000
Deferred Finance Costs, Net	(56,000,000)	(55,000,000)
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	8,700,000,000
Debt under vehicle programs	7,171,000,000	6,837,000,000
Deferred Finance Costs, Net	(37,000,000)	(41,000,000)
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	747,000,000	643,000,000
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	2,400,000,000
Debt under vehicle programs	2,065,000,000	1,187,000,000
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	200,000,000
Debt under vehicle programs	168,000,000	238,000,000
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	1,000,000	8,000,000
Debt Under Vehicle Programs [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Deferred Finance Costs, Net	$ (52,000,000)	$ (53,000,000)