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New and Recently Adopted Accounting Standards - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Jan. 01, 2018 | Dec. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Retained earnings | $ 2,185.5 |  | $ 2,185.5 |  |  | $ 1,867.4
Cost of sales | 1,366.7 | $ 1,243.1 | 4,048.2 | $ 3,661.2 |  |
ASU 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606 |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Retained earnings |  |  |  |  | $ 1.6 |
Cost of sales | $ 6.9 |  | $ 20.0 |  |  |
ASU 2017-07 |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Reclassification of components of income from operation and interest expense, net and other |  | $ 0.3 |  | $ 0.9 |  |

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