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Benefit Plans - Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Noncurrent liabilities | $ (28.2) | $ (29.6)
Pension benefits |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Noncurrent assets | 2.9 | 2.7
Current liabilities | (1.4) | (1.4)
Noncurrent liabilities | (25.5) | (26.5)
Total liabilities | (24.0) | (25.2)
Other retirement benefits |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Noncurrent assets | 0.0 | 0.0
Current liabilities | (0.5) | (0.6)
Noncurrent liabilities | (2.7) | (3.1)
Total liabilities | $ (3.2) | $ (3.7)

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