Debt Under Vehicle Programs and Borrowing Arrangements (Schedule of Available Funding Under the Vehicle Programs) (Details) $ in Millions	Mar. 31, 2024 USD ($)
Debt Instrument [Line Items]
Total Capacity	$ 23,050
Outstanding Borrowings	19,289
Available Capacity	3,761
Americas - Debt due to Avis Budget Rental Car Funding \| Affiliated Entity
Debt Instrument [Line Items]
Total Capacity	18,455
Outstanding Borrowings	16,030
Available Capacity	2,425
Americas - Debt due to Avis Budget Rental Car Funding \| Affiliated Entity \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	18,300
Americas - Debt borrowings
Debt Instrument [Line Items]
Total Capacity	1,194
Outstanding Borrowings	1,082
Available Capacity	112
Americas - Debt borrowings \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	1,500
International - Debt borrowings
Debt Instrument [Line Items]
Total Capacity	3,119
Outstanding Borrowings	1,973
Available Capacity	1,146
International - Debt borrowings \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	2,600
International - Finance leases
Debt Instrument [Line Items]
Total Capacity	242
Outstanding Borrowings	164
Available Capacity	78
International - Finance leases \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	200
Other
Debt Instrument [Line Items]
Total Capacity	40
Outstanding Borrowings	40
Available Capacity	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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

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

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