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Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Goodwill and Other Intangible Assets [Abstract] |  |  |  |
Goodwill | $ 808.1 | [1] | $ 779.3 | [2]
Finite-Lived Intangible Assets [Abstract] |  |  |  |
Weighted average useful life | 28 years |  |  |
Gross carrying amount | $ 249.5 |  | 229.5 |
Accumulated amortization | $ 39.2 |  | 33.0 |
Tradenames [Member] |  |  |  |
Finite-Lived Intangible Assets [Abstract] |  |  |  |
Weighted average useful life | 34 years |  |  |
Gross carrying amount | $ 209.8 |  | 199.8 |
Accumulated amortization | $ 24.6 |  | 20.7 |
Technology [Member] |  |  |  |
Finite-Lived Intangible Assets [Abstract] |  |  |  |
Weighted average useful life | 12 years |  |  |
Gross carrying amount | $ 18.8 |  | 18.8 |
Accumulated amortization | $ 6.0 |  | 4.8 |
Patents and Trademarks [Member] |  |  |  |
Finite-Lived Intangible Assets [Abstract] |  |  |  |
Weighted average useful life | 17 years |  |  |
Gross carrying amount | $ 6.4 |  | 6.4 |
Accumulated amortization | $ 5.5 |  | 5.3 |
Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Assets [Abstract] |  |  |  |
Weighted average useful life | 30 years |  |  |
Gross carrying amount | $ 14.5 |  | 4.5 |
Accumulated amortization | $ 3.1 |  | $ 2.2 |
[1] | Unaudited
[2] | Condensed from audited financial statements

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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