Debt Under Vehicle Programs And Borrowing Arrangements (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2010
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Maximum capacity of variable funding note program to finance vehicle purchases	$ 400

The maximum capacity established by the Company for notes to be issued by Avis Budget Rental Car Funding to the Company to finance the purchase of vehicles.

No definition available.

Name:	car_MaximumCapacityOfVariableFundingNoteProgramToFinanceVehiclePurchases
Namespace Prefix:	car_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant