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Business Combination (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Apr. 30, 2018
Dec. 31, 2019
Sep. 29, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jul. 01, 2018
Apr. 01, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Business Combination [Abstract]                        
Net Sales   $ 440.2 $ 449.3 $ 463.8 $ 437.7 $ 447.5 $ 464.1 $ 464.7 $ 431.3 $ 1,791.0 $ 1,807.6 $ 1,675.7
Acquisition related transaction and integration costs                   0.0 1.7 3.4
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]                        
Goodwill   $ 807.4       $ 812.4       $ 807.4 812.4 $ 779.3
Sivomatic [Member]                        
Business Combination [Abstract]                        
Net Sales                     $ 61.8  
Total consideration transferred, net of cash acquired $ 122.5                      
Additional deferred tax liability 18.8                      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]                        
Accounts receivable 24.4                      
Inventories 15.6                      
Other current assets 0.6                      
Mineral rights 39.7                      
Property, plant and equipment 28.3                      
Goodwill 35.0                      
Intangible assets 26.4                      
Total assets acquired 170.0                      
Current maturity of long-term debt 5.7                      
Accounts payable 9.0                      
Accrued expenses 5.6                      
Long-term debt 5.3                      
Non-current deferred tax liability 19.7                      
Other non-current liabilities 2.2                      
Total liabilities assumed 47.5                      
Net assets acquired $ 122.5                      
Sivomatic [Member] | Trade Names [Member]                        
Business Combination [Abstract]                        
Estimated useful life of intangible assets acquired 20 years                      
Sivomatic [Member] | Customer Relationships [Member]                        
Business Combination [Abstract]                        
Estimated useful life of intangible assets acquired 20 years