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Employee and Retiree Benefit Plans - Schedule of Projected Benefit Obligations, Accumulated Benefit Obligations and Fair Value of Plan Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Funded plan | Qualified plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected Benefit Obligations | $ 497,947 | $ 534,751
Accumulated Benefit Obligations | 489,225 | 523,096
Fair Value of Plan Assets | 477,983 | 461,363
Unfunded plan | Other postretirement plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected Benefit Obligations | 54,994 | 63,808
Accumulated Benefit Obligations | 54,994 | 63,808
Fair Value of Plan Assets | 0 | 0
Unfunded plan | Nonqualified plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Projected Benefit Obligations | 145,058 | 151,146
Accumulated Benefit Obligations | 143,859 | 148,661
Fair Value of Plan Assets | $ 0 | $ 0

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