Schedule Of Available Funding Under Vehicle Programs (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	$ 9,353	[1]
Outstanding Borrowings	6,806
Available Capacity	2,547
Debt Due To Avis Budget Rental Car Funding
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	6,763	[1]
Outstanding Borrowings	5,203
Available Capacity	1,560
Budget Truck Financing
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	311	[1]
Outstanding Borrowings	253
Available Capacity	58
Capital Lease Under Vehicle Program
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	507	[1]
Outstanding Borrowings	315
Available Capacity	192
Other
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	1,772	[1]
Outstanding Borrowings	1,035
Available Capacity	$ 737

[1] Capacity is subject to maintaining sufficient assets to collateralize debt