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Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) $ in Millions	Mar. 31, 2018 USD ($)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	$ 13,050
Outstanding Borrowings (b)	10,421
Available Capacity	2,629
Debt Due To Avis Budget Rental Car Funding (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	8,887
Outstanding Borrowings (b)	7,787
Available Capacity	1,100
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	9,200
Americas Debt Borrowings [Member]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	901
Outstanding Borrowings (b)	646
Available Capacity	255
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	1,000
International Debt Borrowings [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	3,043
Outstanding Borrowings (b)	1,798
Available Capacity	1,245
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	2,300
International Capital Leases [Domain]
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	215
Outstanding Borrowings (b)	186
Available Capacity	29
Leasing Vehicles And Related Assets Pledged As Collateralized Debt	200
Other (Member)
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Total Capacity (a)	4
Outstanding Borrowings (b)	4
Available Capacity	$ 0

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- Definition

Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]

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No definition available.

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- Definition

Leasing Vehicles And Related Assets, Pledged As Collateralized Debt

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No definition available.

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- Definition

Amount borrowed under the vehicle program as of the balance sheet date.

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No definition available.

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- Definition

Amount of borrowing capacity currently available under the vehicle program (current borrowing capacity less the amount of borrowings outstanding).

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No definition available.

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- Definition

Maximum borrowing capacity under the vehicle program without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the program.

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No definition available.

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