Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) (USD $)	Mar. 31, 2015
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 12,344,000,000
Outstanding Borrowings	8,341,000,000
Available Capacity	4,003,000,000
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	9,458,000,000
Outstanding Borrowings	6,838,000,000
Available Capacity	2,620,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	8,500,000,000
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	929,000,000
Outstanding Borrowings	602,000,000
Available Capacity	327,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	832,000,000
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	1,596,000,000
Outstanding Borrowings	591,000,000
Available Capacity	1,005,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,100,000,000
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	340,000,000
Outstanding Borrowings	289,000,000
Available Capacity	51,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	283,000,000
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	21,000,000
Outstanding Borrowings	21,000,000
Available Capacity	$ 0