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Pension and Postretirement Benefits (Accumulated and Projected Obligations) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Retirement Benefits [Abstract] |  |
Benefit Obligation | $ 575,538 | $ 590,015
Accumulated benefit obligation | 559,725 | 577,942
Fair value of plan assets | $ 384,006 | $ 407,307

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