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Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values) (Detail) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term debt and current portion of long-term debt | $ 34 | $ 27
Long-term debt | 4,662 | 4,644
Carrying Amount | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term debt and current portion of long-term debt | 34 | 27
Long-term debt | 4,662 | 4,644
Carrying Amount | Interest Rate Caps | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swaps and interest rate caps | 98 | 111
Carrying Amount | Vehicle-backed debt due to Avis Budget Rental Car Funding | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Vehicle-backed debt | 2,473 | 2,423
Carrying Amount | Avis Budget Rental Car Funding | Vehicle-backed debt due to Avis Budget Rental Car Funding | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Vehicle-backed debt | 12,206 | 11,275
Estimated Fair Value | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term debt and current portion of long-term debt | 34 | 26
Long-term debt | 4,604 | 4,411
Estimated Fair Value | Interest Rate Caps | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swaps and interest rate caps | 98 | 111
Estimated Fair Value | Vehicle-backed debt due to Avis Budget Rental Car Funding | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Vehicle-backed debt | 2,471 | 2,422
Estimated Fair Value | Avis Budget Rental Car Funding | Vehicle-backed debt due to Avis Budget Rental Car Funding | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Vehicle-backed debt | $ 11,847 | $ 10,848

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