Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail)	Mar. 31, 2016 USD ($)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 12,971,000,000
Outstanding Borrowings	9,915,000,000
Available Capacity	3,056,000,000
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	9,265,000,000
Outstanding Borrowings	7,665,000,000
Available Capacity	1,600,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	9,300,000,000
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	1,025,000,000
Outstanding Borrowings	724,000,000
Available Capacity	301,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	900,000,000
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	2,453,000,000
Outstanding Borrowings	1,325,000,000
Available Capacity	1,128,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,800,000,000
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	224,000,000
Outstanding Borrowings	197,000,000
Available Capacity	27,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	200,000,000
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	4,000,000
Outstanding Borrowings	4,000,000
Available Capacity	$ 0