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Commitments and Contingent Liabilities - Asbestos Claims Activity (Details) - Asbestos Related Product Liability $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 USD ($) claim | Dec. 31, 2020 USD ($) claim
Number of claims filed |  |
Pending claims, beginning of period | 38,700 | 39,600
New claims filed | 300 | 1,100
Claims settled/dismissed | (300) | (2,000)
Pending claims, end of period | 38,700 | 38,700
Payments | $ | $ 4 | $ 13

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