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Summary of Changes to Restructuring-Related Liabilities (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | $ 6 | $ 11 | $ 17
Restructuring expense | (63) | (29) | (18)
Balance, ending | 4 | 6 | 11
Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 1 | 1 | 4
Balance, ending | 1 | 1 | 1
International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 5 | 10 | 13
Balance, ending | 3 | 5 | 10
Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 5 | 10 | 14
Balance, ending | 4 | 5 | 10
Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 1 | 1 | 3
Balance, ending | 0 | 1 | 1
Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 0 | 0 | 0
Balance, ending | 0 | 0 | 0
2011 Avis Europe Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 1 |
Cash payment/utilization |  | (1) | (9)
2011 Avis Europe Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 0 |
Cash payment/utilization |  | 0 | (1)
2011 Avis Europe Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 1 |
Cash payment/utilization |  | (1) | (8)
2011 Avis Europe Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 1 |
Cash payment/utilization |  | (1) | (7)
2011 Avis Europe Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 0 |
Cash payment/utilization |  | 0 | (2)
2011 Avis Europe Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 0 |
Cash payment/utilization |  | 0 | 0
2018 Truck Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (5) |  |
Cash payment/utilization | (5) |  |
2018 Truck Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (5) |  |
Cash payment/utilization | (5) |  |
2018 Truck Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 |  |
Cash payment/utilization | 0 |  |
2018 Truck Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (1) |  |
Cash payment/utilization | (1) |  |
2018 Truck Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 |  |
Cash payment/utilization | 0 |  |
2018 Truck Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (4) |  |
Cash payment/utilization | (4) |  |
T17 Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (35) |  |
Cash payment/utilization | (33) |  |
T17 Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (25) |  |
Cash payment/utilization | (24) |  |
T17 Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (10) |  |
Cash payment/utilization | (9) |  |
T17 Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (20) |  |
Cash payment/utilization | (17) |  |
T17 Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 |  |
Cash payment/utilization | (1) |  |
T17 Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (15) |  |
Cash payment/utilization | (15) |  |
2014 T15 Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (21) | (9)
Cash payment/utilization | (3) | (18) | (12)
2014 T15 Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (11) | (6)
Cash payment/utilization | (1) | (11) | (8)
2014 T15 Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (10) | (3)
Cash payment/utilization | (2) | (7) | (4)
2014 T15 Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (15) | (9)
Cash payment/utilization | (3) | (12) | (12)
2014 T15 Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (1) | 0
Cash payment/utilization | 0 | (1) | 0
2014 T15 Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (5) | 0
Cash payment/utilization | 0 | (5) | 0
2015 Acquisition Integration [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (9) | (9)
Cash payment/utilization | (1) | (15) | (3)
2015 Acquisition Integration [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 0 | (1)
Cash payment/utilization | 0 | 0 | (1)
2015 Acquisition Integration [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (9) | (8)
Cash payment/utilization | (1) | (15) | (2)
2015 Acquisition Integration [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | (9) | (9)
Cash payment/utilization | (1) | (15) | (3)
2015 Acquisition Integration [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 0 | 0
Cash payment/utilization | 0 | 0 | 0
2015 Acquisition Integration [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  | 0 | 0
Cash payment/utilization | $ 0 | $ 0 | $ 0

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with 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 50 -Paragraph 1 -Subparagraph (b)(2) -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 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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