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Restructuring - Additional Information (Detail) $ in Millions | 12 Months Ended | 36 Months Ended | 48 Months Ended
--- | --- | --- | ---
Dec. 31, 2017 USD ($) Employee | Dec. 31, 2016 USD ($) Employee | Dec. 31, 2015 USD ($) Employee | Dec. 31, 2014 Employee | Dec. 31, 2017 USD ($) Employee | Dec. 31, 2017 USD ($) Employee
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges | $ 63 | $ 29 | $ 18 |  |  |
2018 Truck Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges | $ 5 |  |  |  |  |
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee | 25 |  |  |  |  |
Restructuring and Related Cost, Number of Positions Eliminated | Employee | 20 |  |  |  |  |
Restructuring and Related Cost, Expected Cost | $ 3 |  |  |  | $ 3 | $ 3
2015 Acquisition Integration [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | $ 9 | $ 9 |  |  |
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee |  | 115 | 180 |  |  |
Restructuring and Related Cost, Number of Positions Eliminated | Employee |  |  |  |  | 260 |
T17 Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges | $ 35 |  |  |  |  |
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee | 680 |  |  |  |  |
Restructuring and Related Cost, Number of Positions Eliminated | Employee | 665 |  |  |  |  |
2014 T15 Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | $ 21 | $ 9 |  |  |
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee |  | 615 | 325 |  |  |
Restructuring and Related Cost, Number of Positions Eliminated | Employee |  |  |  |  |  | 990
2011 Avis Europe Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | $ (1) |  |  |  |
Restructuring and Related Cost, Expected Number of Positions Eliminated | Employee |  |  |  | 230 |  |
Americas | 2018 Truck Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges | $ 5 |  |  |  |  |
Americas | 2015 Acquisition Integration [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | 0 | $ 1 |  |  |
Americas | T17 Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges | 25 |  |  |  |  |
Americas | 2014 T15 Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | 11 | 6 |  |  |
Americas | 2011 Avis Europe Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | 0 |  |  |  |
International | 2018 Truck Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges | 0 |  |  |  |  |
International | 2015 Acquisition Integration [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | 9 | 8 |  |  |
International | T17 Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges | $ 10 |  |  |  |  |
International | 2014 T15 Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | 10 | $ 3 |  |  |
International | 2011 Avis Europe Restructuring [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Charges |  | $ (1) |  |  |  |

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- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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