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Employee Benefit Plans - Fair Value Measurements (Details) - Quoted Prices in Active Markets for Identical Assets (Level 1) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Defined Benefit Plans |  |
Fair value of plan assets | $ 58.2 | $ 114.8
Cash |  |
Defined Benefit Plans |  |
Fair value of plan assets | 4.7 | 0.5
U.S. treasury bonds |  |
Defined Benefit Plans |  |
Fair value of plan assets | $ 6.4 | 21.8
Equity mutual funds |  |
Defined Benefit Plans |  |
Target allocation percentage of investments | 12.00% |
Fair value of plan assets | $ 5.6 | 13.1
Fixed income mutual funds |  |
Defined Benefit Plans |  |
Target allocation percentage of investments | 88.00% |
Fair value of plan assets | $ 41.5 | $ 79.4

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