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Goodwill and Intangible Assets - Intangible Assets (Excluding Goodwill) (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted Average Useful Life (in years) | 14 years |
Gross Carrying Amount | $ 446.8 | $ 436.0
Accumulated Amortization | (101.5) | (86.8)
Total intangible assets | 592.5 | 579.9
Trademarks and trade names |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Indefinite-lived intangible assets | $ 145.7 | 143.9
Customer relationships |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted Average Useful Life (in years) | 13 years |
Gross Carrying Amount | $ 311.6 | 302.5
Accumulated Amortization | $ (71.2) | (59.9)
Unpatented technology |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted Average Useful Life (in years) | 12 years |
Gross Carrying Amount | $ 115.5 | 110.4
Accumulated Amortization | $ (26.9) | (22.3)
Patents and other |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted Average Useful Life (in years) | 6 years |
Gross Carrying Amount | $ 5.0 | 8.4
Accumulated Amortization | $ (0.2) | (1.8)
Trademarks and trade names |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted Average Useful Life (in years) | 13 years |
Gross Carrying Amount | $ 3.5 | 3.6
Accumulated Amortization | $ (1.7) | (1.4)
Land use rights |  |
Schedule of Finite-lived and Indefinite-lived Intangible Assets |  |
Weighted Average Useful Life (in years) | 50 years |
Gross Carrying Amount | $ 11.2 | 11.1
Accumulated Amortization | $ (1.5) | $ (1.4)

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