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Summary of Changes to Restructuring-Related Liabilities (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | $ 4 | $ 6 | $ 11
Restructuring expense | (22) | (63) | (29)
Balance, ending | 2 | 4 | 6
Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 1 | 1 | 1
Balance, ending | 0 | 1 | 1
International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 3 | 5 | 10
Balance, ending | 2 | 3 | 5
Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 4 | 5 | 10
Balance, ending | 1 | 4 | 5
Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 0 | 1 | 1
Balance, ending | 0 | 0 | 1
Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Balance, beginning | 0 | 0 | 0
Balance, ending | 1 | 0 | 0
2011 Avis Europe Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 1
Cash payment/utilization |  |  | (1)
2011 Avis Europe Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 0
Cash payment/utilization |  |  | 0
2011 Avis Europe Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 1
Cash payment/utilization |  |  | (1)
2011 Avis Europe Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 1
Cash payment/utilization |  |  | (1)
2011 Avis Europe Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 0
Cash payment/utilization |  |  | 0
2011 Avis Europe Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 0
Cash payment/utilization |  |  | 0
2018 Truck Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (5) | (5) |
Cash payment/utilization | (5) | (5) |
2018 Truck Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (5) | (5) |
Cash payment/utilization | (5) | (5) |
2018 Truck Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 | 0 |
Cash payment/utilization | 0 | 0 |
2018 Truck Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (1) | (1) |
Cash payment/utilization | (1) | (1) |
2018 Truck Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 | 0 |
Cash payment/utilization | 0 | 0 |
2018 Truck Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (4) | (4) |
Cash payment/utilization | (4) | (4) |
Workforce Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (13) |  |
Cash payment/utilization | (12) |  |
Workforce Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (4) |  |
Cash payment/utilization | (4) |  |
Workforce Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (9) |  |
Cash payment/utilization | (8) |  |
Workforce Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (11) |  |
Cash payment/utilization | (11) |  |
Workforce Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 |  |
Cash payment/utilization | 0 |  |
Workforce Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (2) |  |
Cash payment/utilization | (1) |  |
T17 Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (2) | (35) |
Cash payment/utilization | (5) | (33) |
T17 Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (2) | (25) |
Cash payment/utilization | (3) | (24) |
T17 Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 | (10) |
Cash payment/utilization | (2) | (9) |
T17 Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 | (20) |
Cash payment/utilization | (3) | (17) |
T17 Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 | 0 |
Cash payment/utilization | 0 | (1) |
T17 Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (2) | (15) |
Cash payment/utilization | (2) | (15) |
2014 T15 Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (1) |  | (21)
Cash payment/utilization | (1) | (3) | (18)
2014 T15 Restructuring [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 |  | (11)
Cash payment/utilization | 0 | (1) | (11)
2014 T15 Restructuring [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (1) |  | (10)
Cash payment/utilization | (1) | (2) | (7)
2014 T15 Restructuring [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | (1) |  | (15)
Cash payment/utilization |  | (3) | (12)
2014 T15 Restructuring [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 |  | (1)
Cash payment/utilization |  | 0 | (1)
2014 T15 Restructuring [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense | 0 |  | (5)
Cash payment/utilization |  | 0 | (5)
2015 Acquisition Integration [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | (9)
Cash payment/utilization | (1) | (1) | (15)
2015 Acquisition Integration [Member] | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 0
Cash payment/utilization |  | 0 | 0
2015 Acquisition Integration [Member] | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | (9)
Cash payment/utilization |  | (1) | (15)
2015 Acquisition Integration [Member] | Employee Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | (9)
Cash payment/utilization | (1) | (1) | (15)
2015 Acquisition Integration [Member] | Facility Closing [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 0
Cash payment/utilization | 0 | 0 | 0
2015 Acquisition Integration [Member] | Other Restructuring [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring expense |  |  | 0
Cash payment/utilization | $ 0 | $ 0 | $ 0

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