Pension Plans (Total Benefit/Cost) (Details 1) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Defined Benefit Plan Disclosure [Line Items] | ||||
| Net Periodic Cost (Benefit) | $ (215,165) | $ (61,090) | ||
| Defined Benefit Pension Plan [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | $ 12,379 | $ 11,772 | 35,881 | 35,663 |
| Interest cost | 8,145 | 8,012 | 24,437 | 21,389 |
| Expected return on assets | (44,409) | (41,915) | (133,227) | (125,767) |
| Amortization of prior service credit | (496) | (520) | (1,489) | (1,560) |
| Net Periodic Benefit | (24,381) | (22,651) | (74,398) | (70,275) |
| Settlement | 14,950 | 0 | 151,905 | 0 |
| Early retirement and separation program costs | 3,201 | 2,546 | 11,138 | 9,185 |
| Net Periodic Cost (Benefit) | (36,130) | (20,105) | (215,165) | (61,090) |
| Supplemental Executive Retirement Plan (SERP) [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | 289 | 239 | 868 | 716 |
| Interest cost | 1,154 | 1,198 | 3,464 | 3,592 |
| Net Periodic Cost (Benefit) | $ 1,443 | $ 1,437 | $ 4,332 | $ 4,308 |
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- Definition The net periodic benefit or expense for defined benefit pension plans excluding the early retirement program and special separation benefit expense, curtailment, settlement and other programs separately disclosed in the financial statements. No definition available.
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost of providing special or contractual termination benefits payable from defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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