Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	$ 10,903	[1]
Outstanding Borrowings	8,636
Available Capacity	2,267
Debt under vehicle programs	8,636		6,806
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	7,968	[1],[2]
Outstanding Borrowings	6,128	[2]
Available Capacity	1,840	[2]
Debt under vehicle programs	6,128	[3]	5,203	[3]
Leasing vehicles and related assets, pledged as collateralized debt	7,800
Canada Debt Borrowings [Member] [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	742	[1],[4]
Available Capacity	160	[4]
Debt under vehicle programs	582	[3],[4]	353	[3]
Leasing vehicles and related assets, pledged as collateralized debt	889
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	1,381	[1],[5]
Available Capacity	220	[5]
Debt under vehicle programs	1,161	[3],[5]	679	[3]
Leasing vehicles and related assets, pledged as collateralized debt	1,600
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	466	[1]
Available Capacity	29
Debt under vehicle programs	437	[3]	315	[3]
Budget Truck Financing (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	246	[1],[6]
Outstanding Borrowings	241	[6]
Available Capacity	5	[6]
Debt under vehicle programs	241		253
Leasing vehicles and related assets, pledged as collateralized debt	440
European Rental Fleet Securitization [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing vehicles and related assets, pledged as collateralized debt	165
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	100	[1],[7]
Outstanding Borrowings	87	[7]
Available Capacity	13	[7]
Debt under vehicle programs	$ 87		$ 3

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

[2] The outstanding debt is collateralized by approximately $7.8 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 $889 million of underlying vehicles and related assets.

[5] The outstanding debt is collateralized by approximately $1.6 billion of underlying vehicles and related assets.

[6] The outstanding debt is collateralized by $440 million of underlying vehicles and related assets.

[7] The outstanding debt is collateralized by $165 million of underlying vehicles and related assets.