XML 68 R114.htm IDEA: XBRL DOCUMENT v2.4.1.9
Consolidating Condensed Statements of Cash Flows (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities $ 2,579us-gaap_NetCashProvidedByUsedInOperatingActivities $ 2,253us-gaap_NetCashProvidedByUsedInOperatingActivities $ 1,889us-gaap_NetCashProvidedByUsedInOperatingActivities
Investing activities      
Property and equipment additions (182)car_PropertyAndEquipmentAdditions (152)car_PropertyAndEquipmentAdditions (132)car_PropertyAndEquipmentAdditions
Proceeds received on asset sales 21us-gaap_ProceedsFromSaleOfProductiveAssets 22us-gaap_ProceedsFromSaleOfProductiveAssets 21us-gaap_ProceedsFromSaleOfProductiveAssets
Net assets acquired (net of cash acquired) (416)us-gaap_PaymentsToAcquireRestrictedInvestments (537)us-gaap_PaymentsToAcquireRestrictedInvestments (69)us-gaap_PaymentsToAcquireRestrictedInvestments
intercompany loan receipts   0us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt 0us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
Other, net (11)us-gaap_PaymentsForProceedsFromOtherInvestingActivities 2us-gaap_PaymentsForProceedsFromOtherInvestingActivities (9)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Net cash used in investing activities exclusive of vehicle programs (588)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms (665)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms (189)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
Vehicle programs:      
Decrease in program cash (10)car_DecreaseIncreaseInProgramCash (79)car_DecreaseIncreaseInProgramCash (13)car_DecreaseIncreaseInProgramCash
Investment In Vehicles (11,875)car_InvestmentInVehicles (10,899)car_InvestmentInVehicles (11,067)car_InvestmentInVehicles
Proceeds received on disposition of vehicles 9,666car_ProceedsReceivedOnDispositionOfVehicles 9,409car_ProceedsReceivedOnDispositionOfVehicles 9,196car_ProceedsReceivedOnDispositionOfVehicles
Net Cash Used In Investing Activities Of Vehicle Programs (2,219)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms (1,569)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms (1,884)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
Net cash used in investing activities (2,807)us-gaap_NetCashProvidedByUsedInInvestingActivities (2,234)us-gaap_NetCashProvidedByUsedInInvestingActivities (2,073)us-gaap_NetCashProvidedByUsedInInvestingActivities
Financing activities      
Proceeds from borrowings 871car_ProceedsFromLongTermBorrowings 2,972car_ProceedsFromLongTermBorrowings 1,152car_ProceedsFromLongTermBorrowings
Principal payments on borrowings (762)car_PrincipalPaymentsOnLongTermBorrowings (2,608)car_PrincipalPaymentsOnLongTermBorrowings (1,501)car_PrincipalPaymentsOnLongTermBorrowings
Proceeds from (Repayments of) Short-term Debt 5us-gaap_ProceedsFromRepaymentsOfShortTermDebt (36)us-gaap_ProceedsFromRepaymentsOfShortTermDebt 10us-gaap_ProceedsFromRepaymentsOfShortTermDebt
Net intercompany transactions   0car_NetIntercompanyTransactions  
Debt financing fees (17)us-gaap_PaymentsOfFinancingCosts (37)us-gaap_PaymentsOfFinancingCosts (16)us-gaap_PaymentsOfFinancingCosts
Purchase of warrants 0us-gaap_PaymentsForRepurchaseOfWarrants (78)us-gaap_PaymentsForRepurchaseOfWarrants (29)us-gaap_PaymentsForRepurchaseOfWarrants
Proceeds from sale of call options 0us-gaap_ProceedsFromHedgeFinancingActivities 104us-gaap_ProceedsFromHedgeFinancingActivities 43us-gaap_ProceedsFromHedgeFinancingActivities
Repayments of Related Party Debt     0us-gaap_RepaymentsOfRelatedPartyDebt
Repurchases of common stock (297)us-gaap_PaymentsForRepurchaseOfCommonStock (48)us-gaap_PaymentsForRepurchaseOfCommonStock 0us-gaap_PaymentsForRepurchaseOfCommonStock
Other, net 0us-gaap_ProceedsFromPaymentsForOtherFinancingActivities 3us-gaap_ProceedsFromPaymentsForOtherFinancingActivities 1us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Net cash (used in) provided by financing activities exclusive of vehicle programs (200)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms 272car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms (340)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
Vehicle programs:      
Proceeds from borrowings 14,373car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms 12,953car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms 12,108car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
Principal payments on borrowings (13,963)car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms (13,115)car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms (11,490)car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
Net change in short-term borrowings 5car_NetChangeInShortTermBorrowings (36)car_NetChangeInShortTermBorrowings  
Debt financing fees (28)car_VehicleProgramsPaymentsOfFinancingCosts (34)car_VehicleProgramsPaymentsOfFinancingCosts (28)car_VehicleProgramsPaymentsOfFinancingCosts
Net cash provided by financing activities of vehicle programs 382car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms (196)car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms 590car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
Net cash provided by (used in) financing activities 182us-gaap_NetCashProvidedByUsedInFinancingActivities 76us-gaap_NetCashProvidedByUsedInFinancingActivities 250us-gaap_NetCashProvidedByUsedInFinancingActivities
Effect of changes in exchange rates on cash and cash equivalents (23)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents (8)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents 6us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net (decrease) increase in cash and cash equivalents (69)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 87us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 72us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of period 693us-gaap_CashAndCashEquivalentsAtCarryingValue 606us-gaap_CashAndCashEquivalentsAtCarryingValue 534us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, end of period 624us-gaap_CashAndCashEquivalentsAtCarryingValue 693us-gaap_CashAndCashEquivalentsAtCarryingValue 606us-gaap_CashAndCashEquivalentsAtCarryingValue
Parent Company      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 0us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(3)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(43)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Investing activities      
Property and equipment additions 0car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds received on asset sales 0us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net assets acquired (net of cash acquired) 0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
intercompany loan receipts   0us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
224us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Other, net 285us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
146us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
29us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash used in investing activities exclusive of vehicle programs 285car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
146car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
253car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Vehicle programs:      
Decrease in program cash 0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Investment In Vehicles 0car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds received on disposition of vehicles 0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net Cash Used In Investing Activities Of Vehicle Programs 0car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash used in investing activities 285us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
146us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
253us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Financing activities      
Proceeds from borrowings 0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Principal payments on borrowings 0car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(115)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(222)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds from (Repayments of) Short-term Debt     0us-gaap_ProceedsFromRepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net intercompany transactions   0car_NetIntercompanyTransactions
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Debt financing fees 0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Purchase of warrants   (78)us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(29)us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Proceeds from sale of call options   104us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
43us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Repayments of Related Party Debt     0us-gaap_RepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Repurchases of common stock (297)us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(48)us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Other, net 0us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
1us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash (used in) provided by financing activities exclusive of vehicle programs (297)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(134)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(207)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Vehicle programs:      
Proceeds from borrowings 0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Principal payments on borrowings 0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net change in short-term borrowings 0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Debt financing fees 0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash provided by financing activities of vehicle programs 0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net cash provided by (used in) financing activities (297)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(134)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(207)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Effect of changes in exchange rates on cash and cash equivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net (decrease) increase in cash and cash equivalents (12)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
9us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
3us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash and cash equivalents, beginning of period 14us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
5us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Cash and cash equivalents, end of period 2us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
14us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
5us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Subsidiary Issuers      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 469us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
562us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
272us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Investing activities      
Property and equipment additions (20)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(26)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(26)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Proceeds received on asset sales 7us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
7us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
8us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net assets acquired (net of cash acquired) 0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(564)us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
intercompany loan receipts   233us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other, net (9)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(50)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(4)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash used in investing activities exclusive of vehicle programs (22)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(400)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(22)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Vehicle programs:      
Decrease in program cash 0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Investment In Vehicles (9)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(44)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(4)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Proceeds received on disposition of vehicles 8car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
40car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
3car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net Cash Used In Investing Activities Of Vehicle Programs (1)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(4)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash used in investing activities (23)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(404)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(23)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Financing activities      
Proceeds from borrowings 575car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
2,647car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
1,152car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Principal payments on borrowings (756)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(2,489)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,268)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Proceeds from (Repayments of) Short-term Debt     0us-gaap_ProceedsFromRepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net intercompany transactions   0car_NetIntercompanyTransactions
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
Debt financing fees (12)us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(30)us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(16)us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Purchase of warrants   0us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
Proceeds from sale of call options   0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Repayments of Related Party Debt     224us-gaap_RepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Repurchases of common stock 0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other, net (285)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(146)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(25)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash (used in) provided by financing activities exclusive of vehicle programs (478)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(18)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(381)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Vehicle programs:      
Proceeds from borrowings 0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Principal payments on borrowings 0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net change in short-term borrowings 0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
Debt financing fees 0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash provided by financing activities of vehicle programs 0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash provided by (used in) financing activities (478)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(18)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(381)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Effect of changes in exchange rates on cash and cash equivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net (decrease) increase in cash and cash equivalents (32)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
140us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(132)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Cash and cash equivalents, beginning of period 242us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
102us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
234us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Cash and cash equivalents, end of period 210us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
242us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
102us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Guarantor Subsidiaries      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 340us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
26us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
70us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Investing activities      
Property and equipment additions (84)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(69)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(43)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Proceeds received on asset sales 8us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
4us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
3us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net assets acquired (net of cash acquired) (263)us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
8us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(1)us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
intercompany loan receipts   60us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Other, net (2)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
48us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(1)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash used in investing activities exclusive of vehicle programs (341)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
51car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(42)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Vehicle programs:      
Decrease in program cash 0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Investment In Vehicles (90)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(2)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(20)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Proceeds received on disposition of vehicles 0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
2car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net Cash Used In Investing Activities Of Vehicle Programs (90)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(2)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(18)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash used in investing activities (431)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
49us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(60)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Financing activities      
Proceeds from borrowings 0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Principal payments on borrowings (5)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(3)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(11)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Proceeds from (Repayments of) Short-term Debt     0us-gaap_ProceedsFromRepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net intercompany transactions   (60)car_NetIntercompanyTransactions
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Debt financing fees 0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Purchase of warrants   0us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Proceeds from sale of call options   0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Repayments of Related Party Debt     0us-gaap_RepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Repurchases of common stock 0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Other, net 0us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash (used in) provided by financing activities exclusive of vehicle programs (5)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(63)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(11)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Vehicle programs:      
Proceeds from borrowings 88car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Principal payments on borrowings (3)car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net change in short-term borrowings 0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Debt financing fees (1)car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash provided by financing activities of vehicle programs 84car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net cash provided by (used in) financing activities 79us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(63)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(11)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Effect of changes in exchange rates on cash and cash equivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net (decrease) increase in cash and cash equivalents (12)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
12us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(1)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Cash and cash equivalents, beginning of period 12us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Cash and cash equivalents, end of period 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
12us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Non-Guarantor Subsidiaries      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities 1,840us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
1,736us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
1,650us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Investing activities      
Property and equipment additions (78)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(57)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(63)car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Proceeds received on asset sales 6us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
11us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
10us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net assets acquired (net of cash acquired) (153)us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
19us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(68)us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
intercompany loan receipts   0us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Other, net 0us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
4us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(8)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash used in investing activities exclusive of vehicle programs (225)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(23)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(129)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Vehicle programs:      
Decrease in program cash (10)car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(79)car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(13)car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Investment In Vehicles (11,776)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(10,853)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(11,043)car_InvestmentInVehicles
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Proceeds received on disposition of vehicles 9,658car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
9,369car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
9,191car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net Cash Used In Investing Activities Of Vehicle Programs (2,128)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,563)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,865)car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash used in investing activities (2,353)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,586)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1,994)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Financing activities      
Proceeds from borrowings 296car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
325car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Principal payments on borrowings (1)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1)car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Proceeds from (Repayments of) Short-term Debt     10us-gaap_ProceedsFromRepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net intercompany transactions   (233)car_NetIntercompanyTransactions
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Debt financing fees (5)us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(7)us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Purchase of warrants   0us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Proceeds from sale of call options   0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Repayments of Related Party Debt     0us-gaap_RepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Repurchases of common stock 0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Other, net (70)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(68)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(60)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash (used in) provided by financing activities exclusive of vehicle programs 225car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(20)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(50)car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Vehicle programs:      
Proceeds from borrowings 14,285car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
12,953car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
12,108car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Principal payments on borrowings (13,960)car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(13,115)car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(11,490)car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net change in short-term borrowings 5car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(36)car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Debt financing fees (27)car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(34)car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(28)car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash provided by financing activities of vehicle programs 298car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(196)car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
590car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net cash provided by (used in) financing activities 523us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(216)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
540us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Effect of changes in exchange rates on cash and cash equivalents (23)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(8)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
6us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net (decrease) increase in cash and cash equivalents (13)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(74)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
202us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash and cash equivalents, beginning of period 425us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
499us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
297us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Cash and cash equivalents, end of period 412us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
425us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
499us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Eliminations      
Condensed Financial Statements, Captions [Line Items]      
Net cash provided by (used in) operating activities (70)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
(68)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
(60)us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
Investing activities      
Property and equipment additions 0car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_PropertyAndEquipmentAdditions
/ dei_LegalEntityAxis
= car_EliminationsMember
Proceeds received on asset sales 0us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_ProceedsFromSaleOfProductiveAssets
/ dei_LegalEntityAxis
= car_EliminationsMember
Net assets acquired (net of cash acquired) 0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_PaymentsToAcquireRestrictedInvestments
/ dei_LegalEntityAxis
= car_EliminationsMember
intercompany loan receipts   (293)us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= car_EliminationsMember
(224)us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= car_EliminationsMember
Other, net (285)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
(146)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
(25)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
Net cash used in investing activities exclusive of vehicle programs (285)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
(439)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
(249)car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
Vehicle programs:      
Decrease in program cash 0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_DecreaseIncreaseInProgramCash
/ dei_LegalEntityAxis
= car_EliminationsMember
Investment In Vehicles 0car_InvestmentInVehicles
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_InvestmentInVehicles
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_InvestmentInVehicles
/ dei_LegalEntityAxis
= car_EliminationsMember
Proceeds received on disposition of vehicles 0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_ProceedsReceivedOnDispositionOfVehicles
/ dei_LegalEntityAxis
= car_EliminationsMember
Net Cash Used In Investing Activities Of Vehicle Programs 0car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_NetCashUsedInInvestingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
Net cash used in investing activities (285)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
(439)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
(249)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
Financing activities      
Proceeds from borrowings 0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_ProceedsFromLongTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
Principal payments on borrowings 0car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_PrincipalPaymentsOnLongTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
Proceeds from (Repayments of) Short-term Debt     0us-gaap_ProceedsFromRepaymentsOfShortTermDebt
/ dei_LegalEntityAxis
= car_EliminationsMember
Net intercompany transactions   293car_NetIntercompanyTransactions
/ dei_LegalEntityAxis
= car_EliminationsMember
 
Debt financing fees 0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_PaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= car_EliminationsMember
Purchase of warrants   0us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_PaymentsForRepurchaseOfWarrants
/ dei_LegalEntityAxis
= car_EliminationsMember
Proceeds from sale of call options   0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_ProceedsFromHedgeFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
Repayments of Related Party Debt     (224)us-gaap_RepaymentsOfRelatedPartyDebt
/ dei_LegalEntityAxis
= car_EliminationsMember
Repurchases of common stock 0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= car_EliminationsMember
 
Other, net 355us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
214us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
85us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
Net cash (used in) provided by financing activities exclusive of vehicle programs 355car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
507car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
309car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
Vehicle programs:      
Proceeds from borrowings 0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_ProceedsFromBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
Principal payments on borrowings 0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_PrincipalPaymentsOnBorrowingsFromFinancingActivitiesWithinVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
Net change in short-term borrowings 0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_NetChangeInShortTermBorrowings
/ dei_LegalEntityAxis
= car_EliminationsMember
 
Debt financing fees 0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_VehicleProgramsPaymentsOfFinancingCosts
/ dei_LegalEntityAxis
= car_EliminationsMember
Net cash provided by financing activities of vehicle programs 0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
0car_NetCashProvidedByUsedInFinancingActivitiesOfVehiclePrograms
/ dei_LegalEntityAxis
= car_EliminationsMember
Net cash provided by (used in) financing activities 355us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
507us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
309us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= car_EliminationsMember
Effect of changes in exchange rates on cash and cash equivalents 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
/ dei_LegalEntityAxis
= car_EliminationsMember
Net (decrease) increase in cash and cash equivalents 0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= car_EliminationsMember
Cash and cash equivalents, beginning of period 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= car_EliminationsMember
0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= car_EliminationsMember
Cash and cash equivalents, end of period $ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= car_EliminationsMember
$ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= car_EliminationsMember
$ 0us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= car_EliminationsMember