Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	$ 10,260	[1]
Outstanding Borrowings	9,357
Available Capacity	903
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]
Total Capacity	7,291	[1],[2]
Outstanding Borrowings	6,986	[2]
Available Capacity	305	[2]
Debt under vehicle programs	6,986	[3]	5,203	[3]
Leasing vehicles and related assets, pledged as collateralized debt	8,700
Canada Debt Borrowings [Member] [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	727	[1],[4]
Available Capacity	96	[4]
Debt under vehicle programs	631	[3],[4]	353	[3]
Leasing vehicles and related assets, pledged as collateralized debt	833
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	1,321	[1],[5]
Available Capacity	409	[5]
Debt under vehicle programs	912	[3],[5]	679	[3]
Leasing vehicles and related assets, pledged as collateralized debt	1,300
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	527	[1]
Available Capacity	72
Debt under vehicle programs	455	[3]	315	[3]
Budget Truck Financing (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	259	[1],[6]
Outstanding Borrowings	257	[6]
Available Capacity	2	[6]
Debt under vehicle programs	257		253
Leasing vehicles and related assets, pledged as collateralized debt	432
European Rental Fleet Securitization [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing vehicles and related assets, pledged as collateralized debt	182
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	135	[1],[7]
Outstanding Borrowings	116	[7]
Available Capacity	19	[7]
Debt under vehicle programs	$ 116		$ 3

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

[2] The outstanding debt is collateralized by approximately $8.7 billion of underlying vehicles and related assets.

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

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

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

[6] The outstanding debt is collateralized by $432 million of underlying vehicles and related assets.

[7] The outstanding debt is collateralized by $182 million of underlying vehicles and related assets.