XML 55 R81.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Unrecognized Tax Benefits Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Income Taxes [Line Items] |  |  |  |
Unrecognized tax benefits, non-current income taxes payable | $ 57 | $ 41 |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 27 | 29 |  |
Unrecognized Tax Benefits | 54 | $ 61 | $ 63 | $ 59
Non Avis Budget Car Rental Tax Contingencies |  |  |  |
Income Taxes [Line Items] |  |  |  |
Unrecognized Tax Benefits | $ 13 |  |  |

X
- Definition Income Taxes [Line Items] + References No definition available. + Details
Name: | car_IncomeTaxesLineItems
Namespace Prefix: | car_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unrecognized tax benefits, non-current income taxes payable + References No definition available. + Details
Name: | car_Unrecognizedtaxbenefitsnoncurrentincometaxespayable
Namespace Prefix: | car_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=116821951&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of interest expense accrued for an underpayment of income taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=car_NonAvisBudgetCarRentalTaxContingenciesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |