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Commitments and Contingencies - Asbestos Claimant and Settlement (Details) - Asbestos [Member]
12 Months Ended
Dec. 31, 2019
USD ($)
claimants
Dec. 31, 2018
USD ($)
claimants
Dec. 31, 2017
USD ($)
claimants
Dec. 31, 2016
claimants
Loss Contingencies [Line Items]        
Number of pending claims filed during period 143 171 173  
Number of pending claims dismissed during period 172 564 231  
Number of pending claims settled during period 32 43 25  
Number of pending claims 4,759 4,820 5,256 5,339
Average settlement amount per claim during period | $ $ 16,616 $ 7,191 $ 8,930  
Total defense costs during period | $ $ 2,251,704 $ 2,260,000 $ 2,280,000