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Revenue Recognition (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
revenue_source
Sep. 30, 2020
USD ($)
Revenue from Contract with Customer [Abstract]        
Number of revenue sources | revenue_source     2  
Revenue from External Customer [Line Items]        
Total revenues $ 383.6 $ 279.3 $ 1,049.6 $ 795.0
United States        
Revenue from External Customer [Line Items]        
Total revenues 193.1 148.9 528.7 403.6
Europe and the former Commonwealth of Independent States        
Revenue from External Customer [Line Items]        
Total revenues 103.2 49.1 274.3 156.1
Asia/Pacific (including China)        
Revenue from External Customer [Line Items]        
Total revenues 48.3 51.9 154.9 151.1
Americas (excluding US)        
Revenue from External Customer [Line Items]        
Total revenues 19.9 13.5 55.6 38.9
Other foreign countries        
Revenue from External Customer [Line Items]        
Total revenues 19.1 15.9 36.1 45.3
Product revenues        
Revenue from External Customer [Line Items]        
Total revenues 367.4 262.4 993.9 741.1
Materials conversion revenues        
Revenue from External Customer [Line Items]        
Total revenues 12.5 15.0 45.2 46.8
Other revenues        
Revenue from External Customer [Line Items]        
Total revenues 3.7 1.9 10.5 7.1
AMS        
Revenue from External Customer [Line Items]        
Total revenues 260.1 138.9 675.1 394.6
AMS | United States        
Revenue from External Customer [Line Items]        
Total revenues 152.3 103.6 412.1 275.7
AMS | Europe and the former Commonwealth of Independent States        
Revenue from External Customer [Line Items]        
Total revenues 60.9 9.0 134.5 32.7
AMS | Asia/Pacific (including China)        
Revenue from External Customer [Line Items]        
Total revenues 32.3 21.9 93.2 68.3
AMS | Americas (excluding US)        
Revenue from External Customer [Line Items]        
Total revenues 8.1 1.6 21.6 6.4
AMS | Other foreign countries        
Revenue from External Customer [Line Items]        
Total revenues 6.5 2.8 13.7 11.5
AMS | Product revenues        
Revenue from External Customer [Line Items]        
Total revenues 254.7 135.8 659.1 379.9
AMS | Materials conversion revenues        
Revenue from External Customer [Line Items]        
Total revenues 2.9 2.5 8.8 11.3
AMS | Other revenues        
Revenue from External Customer [Line Items]        
Total revenues 2.5 0.6 7.2 3.4
EP        
Revenue from External Customer [Line Items]        
Total revenues 123.5 140.4 374.5 400.4
EP | United States        
Revenue from External Customer [Line Items]        
Total revenues 40.8 45.3 116.6 127.9
EP | Europe and the former Commonwealth of Independent States        
Revenue from External Customer [Line Items]        
Total revenues 42.3 40.1 139.8 123.4
EP | Asia/Pacific (including China)        
Revenue from External Customer [Line Items]        
Total revenues 16.0 30.0 61.7 82.8
EP | Americas (excluding US)        
Revenue from External Customer [Line Items]        
Total revenues 11.8 11.9 34.0 32.5
EP | Other foreign countries        
Revenue from External Customer [Line Items]        
Total revenues 12.6 13.1 22.4 33.8
EP | Product revenues        
Revenue from External Customer [Line Items]        
Total revenues 112.7 126.6 334.8 361.2
EP | Materials conversion revenues        
Revenue from External Customer [Line Items]        
Total revenues 9.6 12.5 36.4 35.5
EP | Other revenues        
Revenue from External Customer [Line Items]        
Total revenues $ 1.2 $ 1.3 $ 3.3 $ 3.7