Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Debt Under Vehicle Programs) (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	$ 9,357		$ 6,806
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	6,986	[1]	5,203	[1]
Canada Debt Borrowings [Member] [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	631	[1],[2]	353	[1]
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	912	[1],[3]	679	[1]
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	455	[1]	315	[1]
Budget Truck Financing (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	257		253
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Debt under vehicle programs	$ 116		$ 3

[1] The increase principally reflects increased borrowing to fund a seasonal increase in the size of the Company’s car rental fleet.

[2] The outstanding debt is collateralized by $833 million of underlying vehicles and related assets.

[3] The outstanding debt is collateralized by approximately $1.3 billion of underlying vehicles and related assets.