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Financial Instruments (Schedule Of Effect Of Derivatives Recognized) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Document Period End Date |  |  | Sep. 30, 2018 |  |
Interest Expense | $ 44 | $ 45 | $ 139 | $ 142 |
Document Fiscal Year Focus |  |  | 2018 |  |
Long-term Debt, Current Maturities | 23 |  | $ 23 |  | $ 26
Derivatives not designated as hedging instruments | 6 | (23) | 46 | (90) |
Debt due to Avis Budget Rental Car Funding (AESOP) LLC—related party | 7,122 |  | 7,122 |  | $ 6,480
Interest Rate Swaps [Member] |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Derivative, Notional Amount | 1,500 |  | 1,500 |  |
Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Interest rate swaps | 0 | 1 | 8 | 0 |
Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member] |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Interest rate swaps | 3 | (13) | 16 | (44) |
Not Designated As Hedging Instruments [Member] |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Interest Income, Other | 5 |  | 12 |  |
Interest Expense |  | 7 |  | 25 |
Interest Expense Domestic Deposit Liabilities | 1 | (4) | 13 | (19) |
Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member] |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Derivatives not designated as hedging instruments | 6 | (11) | 25 | (44) |
Not Designated As Hedging Instruments [Member] | Commodity Contracts [Member] |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Derivatives not designated as hedging instruments | 0 | 1 | 1 | (1) |
Not Designated As Hedging Instruments [Member] | Interest Rate Contracts [Member] |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |
Derivatives not designated as hedging instruments | $ (3) | $ (1) | $ (4) | $ (1) |

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- Definition Carrying amount as of the balance sheet date of obligations due to Avis Budget Rental Car Funding (AESOP) LLC- a related party, for rental vehicles. + References No definition available. + Details
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- Definition This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. + References No definition available. + Details
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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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