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Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values) (Detail) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term debt and current portion of long-term debt | $ 27 | $ 19
Long-term debt | 4,678 | 3,990
Carrying Amount | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term debt and current portion of long-term debt | 27 | 19
Long-term debt | 4,678 | 3,990
Carrying Amount | Interest rate caps | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Interest rate swaps and interest rate caps | 48 | 14
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 | 2,308 | 2,528
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 | 9,743 | 8,848
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 | 26 | 18
Long-term debt | 4,701 | 4,153
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 | 48 | 14
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 | 2,313 | 2,559
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 | $ 9,610 | $ 9,009

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