Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	$ 10,244	[1]
Outstanding Borrowings	7,462
Available Capacity	2,782
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	7,403	[1],[2]
Outstanding Borrowings	5,873	[2]
Available Capacity	1,530	[2]
Leasing vehicles and related assets, pledged as collateralized debt	7,700
Budget Truck Financing (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	277	[1],[3]
Outstanding Borrowings	236	[3]
Available Capacity	41	[3]
Leasing vehicles and related assets, pledged as collateralized debt	375
Capital Leases (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	465	[1]
Outstanding Borrowings	298
Available Capacity	167
European Rental Fleet Securitization [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	641	[1],[4]
Outstanding Borrowings	142	[4]
Available Capacity	499	[4]
Leasing vehicles and related assets, pledged as collateralized debt	442
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	1,458	[1],[5]
Outstanding Borrowings	913	[5]
Available Capacity	545	[5]
Leasing vehicles and related assets, pledged as collateralized debt	$ 1,300

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

[2] The outstanding debt is collateralized by approximately $7.7 billion of underlying vehicles and related assets.

[3] The outstanding debt is collateralized by $375 million of underlying vehicles and related assets.

[4] The outstanding debt is collateralized by approximately $442 million of underlying vehicles and related assets.

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