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Commitments and Contingencies - Enviromental Liability Rollforward (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Environmental Liability And Related Assets [Line items] |  |  |
Environmental Loss Contingency Statement Of Financial Position Extensible Enumeration Not Disclosed Flag | estimated current and long-term environmental liability |  |
Environmental Related Matters [Member] |  |  |
Environmental Liability and Related Assets [Roll Forward] |  |  |
Balance as of January 1 | $ 57.1 | $ 54.1 |
Changes in estimates for pre-existing accruals: |  |  |
Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses | 0.0 | 0.1 |
Discontinued operations(a) | 0.0 | (0.1) |
Cash payments | (3.9) | (4.0) |
Foreign currency | 0.2 | (0.2) |
Balance as of December 31 | 56.0 | 57.1 |
Environmental Related Matters [Member] | Continuing Operations [Member] |  |  |
Changes in estimates for pre-existing accruals: |  |  |
Accrual for Environmental Loss Contingencies, Revision in Estimates | 2.6 | 1.7 |
Environmental Related Matters [Member] | Discontinued Operations [Member] |  |  |
Changes in estimates for pre-existing accruals: |  |  |
Accrual for Environmental Loss Contingencies, Revision in Estimates | $ 0.0 | $ 5.4 | [1]
[1] | During 2022, we increased the estimated environmental liability for a former site of ITT by $5.4 and recognized an insurance-related asset of $4.3. The resulting net pre-tax expense of $1.1 has been presented as a loss from discontinued operations within our Consolidated Statements of Operations.

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