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Goodwill and Other Intangible Assets (Schedule of Intangible Assets, Excluding Goodwill) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 589.8 | $ 489.6
Accumulated Amortization | (477.2) | (446.2)
Total | $ 112.6 | $ 43.4
Trademarks, patents, licenses and agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period (Years) | 7 years | 7 years
Gross Carrying Amount | $ 59.8 | $ 24.0
Accumulated Amortization | (22.4) | (13.5)
Total | $ 37.4 | $ 10.5
Capitalized software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period (Years) | 5 years | 5 years
Gross Carrying Amount | $ 15.3 | $ 4.8
Accumulated Amortization | (5.1) | (4.3)
Total | $ 10.2 | $ 0.5
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period (Years) | 6 years | 6 years
Gross Carrying Amount | $ 514.7 | $ 460.8
Accumulated Amortization | (449.7) | (428.4)
Total | $ 65.0 | $ 32.4

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