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Employee Benefits - Summary of Total Expense Related to All Postretirement Benefit Plans (Parenthetical) (Details) - USD ($) $ in Millions | 9 Months Ended | 18 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2025
2024 Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Multiemployer pension plans excludes charge to restructuring costs | $ 4.6 | $ 4.6

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