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Contingent Liabilities and Other Matters - Asbestos Product Liability Matters (Details) - Asbestos Related Claims - claim | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Liability for Asbestos and Environmental Claims, Net [Roll Forward] |  |  |
Pending claims, beginning of year | 11,079 | 13,767 | 17,359
Claims filed | 2,449 | 3,607 | 3,857
Claims resolved | (3,746) | (6,295) | (7,449)
Pending claims, end of year | 9,782 | 11,079 | 13,767

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- Definition The number of claims settled and dismissed 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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