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Arrangements With New Hertz Arrangements With New Hertz (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017
Related Party Transaction [Line Items] |  |
Transition Services Agreement period (up to) |  | 2 years
Transition Services Agreement | New Hertz |  |
Related Party Transaction [Line Items] |  |
Incurred expenses | $ 4.9 | $ 10.1

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