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Goodwill and Intangible Assets - Intangible Assets (Excluding Goodwill) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 16 years |
Gross Carrying Amount | $ 267.8 | $ 268.5
Accumulated Amortization | (95.9) | (81.0)
Total intangible assets | 366.2 | 367.4
Trademarks and trade names |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Indefinite-lived intangible assets | $ 98.4 | 98.9
Customer relationships |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 15 years |
Gross Carrying Amount | $ 225.9 | 226.5
Accumulated Amortization | $ (87.5) | (74.9)
Unpatented technology |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 9 years |
Gross Carrying Amount | $ 23.3 | 22.6
Accumulated Amortization | $ (4.4) | (2.6)
Land use rights |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 50 years |
Gross Carrying Amount | $ 12.8 | 13.4
Accumulated Amortization | $ (1.3) | (1.2)
Trademarks and trade names |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 15 years |
Gross Carrying Amount | $ 3.3 | 3.4
Accumulated Amortization | $ (1.6) | (1.7)
Patents and other |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 5 years |
Gross Carrying Amount | $ 2.5 | 2.6
Accumulated Amortization | $ (1.1) | $ (0.6)

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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://www.xbrl.org/2003/role/presentationRef -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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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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