Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	$ 9,687
Outstanding Borrowings	2,920	3,166
Available Capacity	1,812
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	7,318
Outstanding Borrowings	5,813
Available Capacity	1,505
Leasing vehicles and related assets, pledged as collateralized debt	7,500
Budget Truck Financing (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	295
Outstanding Borrowings	280
Available Capacity	15
Leasing vehicles and related assets, pledged as collateralized debt	448
Capital Leases (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	529
Outstanding Borrowings	500
Available Capacity	29
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	1,545
Outstanding Borrowings	1,282
Available Capacity	263
Leasing vehicles and related assets, pledged as collateralized debt	$ 2,300