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Commitments and Contingencies Asbestos Claimant and Settlement (Details) - Asbestos [Member] | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) claimants | Dec. 31, 2020 USD ($) claimants | Dec. 31, 2019 claimants
Loss Contingencies [Line Items] |  |  |
Loss Contingency, Pending Claims, Number | 4,709 | 4,655 | 4,759
Loss Contingency, New Claims Filed, Number | 171 | 219 |
Loss Contingency, Claims Dismissed, Number | 89 | 287 |
Loss Contingency, Claims Settled, Number | 28 | 36 |
Average settlement amount per claim during period | $ | $ 11,632 | $ 18,314 |
Legal Fees | $ | $ 1,560,000 | $ 2,130,000 |

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- Definition Average amount of consideration the entity has agreed to pay to settle a legal matter for claims settled during the period. + References No definition available. + Details
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- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of claims dismissed. + References No definition available. + Details
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- Definition Number of claims settled. + References No definition available. + Details
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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
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- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
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- Details
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