Debt Under Vehicle Programs and Borrowing Arrangements (Schedule of Available Funding Under the Vehicle Programs) (Details) $ in Millions	Sep. 30, 2023 USD ($)
Debt Instrument [Line Items]
Total Capacity	$ 19,796
Outstanding Borrowings	18,726
Available Capacity	1,070
Americas - Debt due to Avis Budget Rental Car Funding \| Affiliated Entity
Debt Instrument [Line Items]
Total Capacity	15,896
Outstanding Borrowings	15,182
Available Capacity	714
Americas - Debt due to Avis Budget Rental Car Funding \| Affiliated Entity \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	17,500
Americas - Debt borrowings
Debt Instrument [Line Items]
Total Capacity	940
Outstanding Borrowings	889
Available Capacity	51
Americas - Debt borrowings \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	1,400
International - Debt borrowings
Debt Instrument [Line Items]
Total Capacity	2,625
Outstanding Borrowings	2,385
Available Capacity	240
International - Debt borrowings \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	3,100
International - Finance leases
Debt Instrument [Line Items]
Total Capacity	249
Outstanding Borrowings	184
Available Capacity	65
International - Finance leases \| Secured Debt
Debt Instrument [Line Items]
Outstanding Borrowings	200
Other
Debt Instrument [Line Items]
Total Capacity	86
Outstanding Borrowings	86
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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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