Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	$ 11,487	[1]
Outstanding Borrowings	7,999
Available Capacity	3,488
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	8,544	[1],[2]
Outstanding Borrowings	6,359	[2]
Available Capacity	2,185	[2]
Leasing vehicles and related assets, pledged as collateralized debt	8,100
Canada Debt Borrowings [Member] [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	724	[1],[3]
Outstanding Borrowings	482	[3]
Available Capacity	242	[3]
Leasing vehicles and related assets, pledged as collateralized debt	604
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	1,511	[1],[4]
Outstanding Borrowings	584	[4]
Available Capacity	927	[4]
Leasing vehicles and related assets, pledged as collateralized debt	1,000
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	468	[1],[5]
Outstanding Borrowings	353	[5]
Available Capacity	115	[5]
Budget Truck Financing (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	230	[1],[6]
Outstanding Borrowings	211	[6]
Available Capacity	19	[6]
Leasing vehicles and related assets, pledged as collateralized debt	387
European Rental Fleet Securitization [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing vehicles and related assets, pledged as collateralized debt	351
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity	10	[1]
Outstanding Borrowings	10
Available Capacity	$ 0

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

[2] The outstanding debt is collateralized by approximately $8.1 billion of underlying vehicles and related assets.

[3] The outstanding debt is collateralized by $604 million of underlying vehicles and related assets.

[4] The outstanding debt is collateralized by approximately $1.0 billion of underlying vehicles and related assets.

[5] The outstanding debt is collateralized by $387 million of underlying vehicles and related assets.

[6] The outstanding debt is collateralized by $351 million of underlying vehicles and related assets.