Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail)	Sep. 30, 2016 USD ($)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 13,398,000,000
Outstanding Borrowings	10,152,000,000
Available Capacity	3,246,000,000
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	9,556,000,000
Outstanding Borrowings	7,171,000,000
Available Capacity	2,385,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	8,700,000,000
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	962,000,000
Outstanding Borrowings	747,000,000
Available Capacity	215,000,000
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)	2,671,000,000
Outstanding Borrowings	2,065,000,000
Available Capacity	606,000,000
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	2,400,000,000
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	208,000,000
Outstanding Borrowings	168,000,000
Available Capacity	40,000,000
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)	1,000,000
Outstanding Borrowings	1,000,000
Available Capacity	$ 0