Commitments and Contingencies Asbestos Narrative (Details) - Asbestos [Member]	3 Months Ended	6 Months Ended	12 Months Ended	36 Months Ended	366 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) claimants cases	Dec. 31, 2020 USD ($) claimants	Dec. 31, 2019 USD ($) claimants	Jun. 30, 2021 USD ($) claimants cases
Loss Contingencies [Line Items]
Liabilities Subject to Compromise, Asbestos Obligations		$ 27,300,000			$ 27,300,000
Loss Contingency, Pending Cases, Number | cases		374			374
Loss Contingency, Pending Claims, Number | claimants		4,725	4,655	4,759	4,725
Total settlement costs					$ 10,300,000
Loss Contingency, New Claims Filed, Number | claimants		143	219
Percentage of settlement and defense costs covered by insurance					40.00%
Legal Fees		$ 1,060,000	$ 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
Compensatory Only Damages [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages | claimants		33			33
Selling, General and Administrative Expenses [Member]
Loss Contingencies [Line Items]
Impact of change in accounting principle	$ 23,400,000