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Income Taxes Income Tax Refunds, Net (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Predecessor |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net | $ 5.5 |  | $ (40.1) | $ (25.8)
Predecessor | Domestic Tax Authority [Member] |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net | 0.0 |  | (56.5) | (38.1)
Predecessor | State and Local Jurisdiction [Member] |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net | 0.0 |  | 1.4 | 0.4
Predecessor | Foreign Tax Authority [Member] |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net | $ 5.5 |  | $ 15.0 | $ 11.9
Successor |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net |  | $ (0.8) |  |
Successor | Domestic Tax Authority [Member] |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net |  | (11.2) |  |
Successor | State and Local Jurisdiction [Member] |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net |  | 0.0 |  |
Successor | Foreign Tax Authority [Member] |  |  |  |
Income Tax Refunds, Net [Line Items] |  |  |  |
Income Taxes Paid, Net |  | $ 10.4 |  |

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- Definition [Line Items] for Income Tax Refunds, Net [Table] + References No definition available. + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 + Details
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