Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail)	Sep. 30, 2015 USD ($)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 13,004,000,000
Outstanding Borrowings	9,996,000,000
Available Capacity	3,008,000,000
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	9,489,000,000
Outstanding Borrowings	7,239,000,000
Available Capacity	2,250,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	8,800,000,000
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	1,014,000,000
Outstanding Borrowings	766,000,000
Available Capacity	248,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,100,000,000
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	2,166,000,000
Outstanding Borrowings	1,689,000,000
Available Capacity	477,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	2,200,000,000
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	329,000,000
Outstanding Borrowings	296,000,000
Available Capacity	33,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	300,000,000
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	6,000,000
Outstanding Borrowings	6,000,000
Available Capacity	$ 0