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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 |  |  |  |

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