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Supplemental Guarantor Information - Condensed Consolidating Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Supplemental Guarantor Information [Line Items] |  |
Comprehensive income (loss) | $ 144.4 | $ 64.3
Consolidating Adjustments |  |
Supplemental Guarantor Information [Line Items] |  |
Comprehensive income (loss) | (336.6) | (199.7)
Parent Guarantor | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Comprehensive income (loss) | 144.4 | 64.3
Subsidiary Issuer | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Comprehensive income (loss) | 144.5 | 64.3
Guarantor Subsidiaries | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Comprehensive income (loss) | 164.9 | 120.1
Non-Guarantor Subsidiaries | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Comprehensive income (loss) | 27.2 | 15.3
Co-Issuer | Reportable Legal Entities |  |
Supplemental Guarantor Information [Line Items] |  |
Comprehensive income (loss) | $ 0.0 | $ 0.0

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e557-108580 + Details
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