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Commitments and Contingencies (Summary of Change in Number of Asbestos Claims Outstanding) (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2021 USD ($) claim
Liability for Asbestos and Environmental Claims [Roll Forward] |
Claims outstanding as of January 1, 2021 | 561
New claims filed | 64
Pending claims concluded | (77)
Claims outstanding as of June 30, 2021 | 548
Number of claims dismissed | 71
Number of claims settled | 6
Settlements | $ | $ 0.5

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