XML 138 R109.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Employee Benefit Plans - Summary Of Defined Benefit Pension Plans' Assets Fair Value (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | $ 540 | $ 514 | $ 772
Cash equivalents and short-term investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 24 | 24 |
U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 88 | 88 |
Non-U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 63 | 69 |
Government bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 1 | 2 |
Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 185 | 174 |
Other assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 179 | 157 |
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 264 | 254 |
Level 1 | Cash equivalents and short-term investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 12 | 18 |
Level 1 | U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 73 | 69 |
Level 1 | Non-U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 40 | 39 |
Level 1 | Government bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 1 | 0 |
Level 1 | Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 138 | 126 |
Level 1 | Other assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 0 | 2 |
Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 215 | 206 |
Level 2 | Cash equivalents and short-term investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 12 | 6 |
Level 2 | U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 15 | 19 |
Level 2 | Non-U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 23 | 30 |
Level 2 | Government bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 0 | 2 |
Level 2 | Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 47 | 48 |
Level 2 | Other assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 118 | 101 |
Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 61 | 54 |
Purchases | 11 | 54 |
Level 3 | Cash equivalents and short-term investments |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 0 | 0 |
Level 3 | U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 0 | 0 |
Level 3 | Non-U.S. equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 0 | 0 |
Level 3 | Government bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 0 | 0 |
Level 3 | Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | 0 | 0 |
Level 3 | Other assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total assets | $ 61 | $ 54 |

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, measured using unobservable input, of increase in plan asset of defined benefit plan from purchase. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(B) -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationIncreaseForPurchase
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=car_DomesticStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=car_InternationalStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |