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Business Combination (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 29, 2019
Dec. 31, 2018
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]    
Goodwill $ 806.8 [1] $ 812.4 [2]
Sivomatic [Member]    
Business Combination [Abstract]    
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  
[1] Unaudited
[2] Condensed from audited financial statements