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Goodwill and Intangible Assets - Intangible Assets (Excluding Goodwill) (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 14 years |
Gross Carrying Amount | $ 328.0 | $ 333.1
Accumulated Amortization | (109.9) | (101.0)
Total intangible assets | 426.3 | 431.4
Trademarks and trade names |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Indefinite-lived intangible assets | $ 98.3 | 98.3
Customer relationships |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 14 years |
Gross Carrying Amount | $ 252.4 | 254.0
Accumulated Amortization | $ (100.1) | (92.0)
Unpatented technology |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 12 years |
Gross Carrying Amount | $ 38.6 | 39.4
Accumulated Amortization | $ (5.9) | (5.1)
Land use rights |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 50 years |
Gross Carrying Amount | $ 12.1 | 12.2
Accumulated Amortization | $ (1.4) | (1.3)
Trademarks and trade names |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 14 years |
Gross Carrying Amount | $ 13.0 | 13.5
Accumulated Amortization | $ (1.1) | (1.1)
Patents and other |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted-average Estimated Useful Life | 7 years |
Gross Carrying Amount | $ 11.9 | 14.0
Accumulated Amortization | $ (1.4) | $ (1.5)

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