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Commitments and Contingencies Asbestos Narrative (Details) - Asbestos [Member]
3 Months Ended 9 Months Ended 12 Months Ended 36 Months Ended 369 Months Ended
Sep. 30, 2021
USD ($)
claimants
cases
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
claimants
cases
Dec. 31, 2020
USD ($)
claimants
Dec. 31, 2019
USD ($)
claimants
Sep. 30, 2021
USD ($)
claimants
cases
Loss Contingencies [Line Items]            
Liabilities Subject to Compromise, Asbestos Obligations $ 26,800,000   $ 26,800,000     $ 26,800,000
Loss Contingency, Pending Cases, Number | cases 370   370     370
Loss Contingency, Pending Claims, Number | claimants 4,709   4,709 4,655 4,759 4,709
Total settlement costs           $ 10,300,000
Loss Contingency, New Claims Filed, Number | claimants     171 219    
Percentage of settlement and defense costs covered by insurance           40.00%
Legal Fees     $ 1,560,000 $ 2,130,000    
Minimum [Member]            
Loss Contingencies [Line Items]            
Liabilities Subject to Compromise, Asbestos Obligations         $ 31,500,000  
Loss Contingency, New Claims Filed, Number | claimants         143  
Legal Fees         $ 2,200,000  
Maximum [Member]            
Loss Contingencies [Line Items]            
Liabilities Subject to Compromise, Asbestos Obligations         $ 43,300,000  
Loss Contingency, New Claims Filed, Number | claimants         173  
Legal Fees         $ 2,300,000  
Punitive Only Damages [Member]            
Loss Contingencies [Line Items]            
Number of pending claims seeking specific amounts of damages | claimants 1   1     1
Punitive Only Damages [Member] | Minimum [Member]            
Loss Contingencies [Line Items]            
Loss Contingency, Damages Sought, Value $ 5,000,000          
Compensatory Only Damages [Member] | Pending Litigation [Member]            
Loss Contingencies [Line Items]            
Number of pending claims seeking specific amounts of damages | claimants 24   24     24
Selling, General and Administrative Expenses [Member]            
Loss Contingencies [Line Items]            
Impact of change in accounting principle   $ 23,400,000