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Goodwill and Intangible Assets, Finite-lived intangible Assets (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible assets, gross $ 1,199.1 $ 1,228.1 $ 1,199.1  
Accumulated amortization (110.7) (169.3) (110.7)  
Finite-lived intangible assets, net 1,088.4 1,058.8 1,088.4  
Amortization Expense   62.2 26.8 $ 23.6
Impairment loss on indefinite-lived intangible asset 42.0   42.1 $ 9.3
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]        
2019   62.3    
2020   62.2    
2021   62.0    
2022   61.9    
2023   61.7    
Customer Relationships        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible assets, gross 1,122.5 $ 1,146.2 1,122.5  
Useful lives of finite-lived intangible assets   18 years    
Accumulated amortization (73.3) $ (128.7) (73.3)  
Finite-lived intangible assets, net 1,049.2 1,017.5 1,049.2  
Patents        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible assets, gross 1.9 $ 1.7 1.9  
Useful lives of finite-lived intangible assets   7 years    
Accumulated amortization (0.5) $ (0.8) (0.5)  
Finite-lived intangible assets, net 1.4 0.9 1.4  
Brands        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible assets, gross 15.6 $ 17.0 15.6  
Useful lives of finite-lived intangible assets   10 years    
Accumulated amortization (6.2) $ (5.9) (6.2)  
Finite-lived intangible assets, net 9.4 11.1 9.4  
Purchased and licensed technologies        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible assets, gross 57.3 $ 61.3 57.3  
Useful lives of finite-lived intangible assets   10 years    
Accumulated amortization (28.9) $ (32.1) (28.9)  
Finite-lived intangible assets, net 28.4 29.2 28.4  
Other intangibles        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived intangible assets, gross 1.8 $ 1.9 1.8  
Useful lives of finite-lived intangible assets   2 years    
Accumulated amortization (1.8) $ (1.8) (1.8)  
Finite-lived intangible assets, net $ 0.0 $ 0.1 $ 0.0