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Revenue Recognition Revenue by Category (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Revenue from Contract with Customer [Abstract] |  |  |  |
Sales Revenue, Revenue Earning Equipment, Gross | $ 35.4 | $ 50.1 | $ 171.8 | $ 175.6
Sales Revenue, New Equipment | 4.8 | 5.1 | 16.0 | 15.5
Sales Revenue, Parts and Supplies | 5.2 | 9.1 | 18.1 | 20.9
Sales Revenue, Revenue Earning Equipment, Net | $ 45.4 | $ 64.3 | $ 205.9 | $ 212.0

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