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Other Intangible Assets (Schedule of Other Intangible Assets) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Details of other intangible assets    
Gross Value $ 137.1 $ 134.8
Accumulated Amortization 41.8 35.3
Net Value 95.3 99.5
Indefinite-lived tradenames    
Details of other intangible assets    
Indefinite-lived intangible assets $ 24.1 23.7
Customer relationships    
Details of other intangible assets    
Weighted Average Remaining Useful Life (Years) 11 years  
Finite-lived intangible assets, Gross Value $ 86.0 83.4
Accumulated Amortization 34.5 29.3
Net, Finite-lived intangible assets $ 51.5 54.1
Technology    
Details of other intangible assets    
Weighted Average Remaining Useful Life (Years) 16 years 6 months  
Finite-lived intangible assets, Gross Value $ 22.9 23.6
Accumulated Amortization 4.1 3.0
Net, Finite-lived intangible assets $ 18.8 20.6
Other    
Details of other intangible assets    
Weighted Average Remaining Useful Life (Years) 6 years 7 months  
Finite-lived intangible assets, Gross Value $ 4.1 4.1
Accumulated Amortization 3.2 3.0
Net, Finite-lived intangible assets $ 0.9 $ 1.1