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Fair Value Measurements Nonrecurring Fair Value Measurements (Details) - USD ($) $ in Millions | 3 Months Ended | 8 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2017 | Sep. 10, 2016 | Sep. 10, 2016 | Sep. 30, 2017 | Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Property, Plant and Equipment, Net | $ 142.2 | $ 148.8 | $ 148.8 | $ 142.2 | $ 146.1
Restructuring and impairment costs | 23.0 | $ 0.9 | 13.4 | 65.6 |
Impairment of Property and Equipment [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restructuring and impairment costs |  |  |  | 9.6 |
Impairment of Property and Equipment [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Property, Plant and Equipment, Net | $ 0.0 |  |  | 0.0 |
Consumer Direct Operations [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Restructuring and impairment costs |  |  | $ 11.0 | $ (0.7) |

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