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New and Recently Adopted Accounting Standards - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jan. 01, 2018 | Dec. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Retained earnings | $ 2,054.0 |  | $ 2,054.0 |  |  | $ 1,867.4
Cost of sales | 1,346.9 | $ 1,219.7 | 2,681.4 | $ 2,418.0 |  |
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 |  | $ 13.1 |  |  |
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 |  | $ 0.6 |  |

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- Definition Total costs related to goods produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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