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Employee Benefit Plans - Net Periodic Benefit Cost and General Information (Details) shares in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 17, 2024 USD ($) participant | Dec. 31, 2024 USD ($) shares | Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) shares
Components of net periodic benefit cost |  |  |  |  |
Discretionary contributions |  |  | $ 500,000 |  |
Mandatory minimum employer contributions to pension plans |  |  | $ 0 | $ 0 |
Defined Contribution Plans |  |  |  |  |
Maximum company match (as a percent) |  |  | 4.00% |  |
Employer contributions for the savings account |  |  | $ 17,500,000 | $ 19,900,000 | $ 20,300,000
Maximum percentage of employee compensation match by employer to employee stock ownership plan |  |  | 50.00% |  |
Common shares held (in shares) | shares |  | 0.4 | 0.4 | 0.5 | 0.6
Deferred Compensation - Cash |  |  |  |  |
Deferred compensation plan, employer matching contribution (percent) |  |  | 4.00% |  |
Deferred compensation arrangement, compensation distribution period |  |  | 10 years |  |
Cash |  |  |  |  |
Deferred Compensation - Cash |  |  |  |  |
Deferred compensation, Rabbi Trust |  | $ 3,700,000 | $ 3,700,000 | $ 4,400,000 |
Short-term Investments |  |  |  |  |
Deferred Compensation - Cash |  |  |  |  |
Deferred compensation, Rabbi Trust |  | $ 11,700,000 | $ 11,700,000 | $ 11,500,000 |
Defined Benefit Plans |  |  |  |  |
Weighted-average assumptions for benefit obligations |  |  |  |  |
Discount rate (as a percent) | 5.00% | 5.50% | 5.50% | 4.80% |
Rate of compensation increase (as a percent) |  | 3.80% | 3.80% | 3.80% |
Weighted-average assumptions for net periodic benefit cost |  |  |  |  |
Discount rate (as a percent) |  |  | 4.80% | 5.10% | 2.60%
Rate of compensation increase (as a percent) |  |  | 3.80% | 3.80% | 3.80%
Expected long-term return on plan assets (as a percent) |  |  | 6.00% | 6.00% | 6.60%
Weighted-average cash balance interest crediting rate (as a percent) |  |  | 4.00% | 4.00% | 4.00%
Components of net periodic benefit cost |  |  |  |  |
Service cost |  |  | $ 2,200,000 | $ 2,100,000 | $ 2,300,000
Interest cost |  |  | 5,500,000 | 6,300,000 | 3,300,000
Expected return on plan assets |  |  | (7,000,000.0) | (8,200,000) | (9,500,000)
Amortization of unrecognized net loss |  |  | 1,800,000 | 1,300,000 | 5,000,000.0
Amortization of unrecognized prior service credit |  |  | 100,000 | 100,000 | 0
Settlement expense |  |  | 21,100,000 | 0 | 0
Net periodic benefit cost |  |  | 23,700,000 | 1,600,000 | 1,100,000
Fair value of plan assets |  | $ 58,200,000 | 58,200,000 | 114,800,000 | $ 114,900,000
Company's contribution to pension plan |  |  | 2,100,000 | 5,100,000 |
Estimated future benefit payments |  |  |  |  |
2025 |  | 11,600,000 | 11,600,000 |  |
2026 |  | 7,700,000 | 7,700,000 |  |
2027 |  | 7,600,000 | 7,600,000 |  |
2028 |  | 7,200,000 | 7,200,000 |  |
2029 |  | 7,500,000 | 7,500,000 |  |
2029-2033 |  | 30,100,000 | 30,100,000 |  |
Defined Benefit Plans | United States |  |  |  |  |
Pension Settlement |  |  |  |  |
Defined benefit pension plan transferred | $ 55,000,000 |  |  |  |
Number of participants in benefit pension plan | participant | 1,300 |  |  |  |
Expected non-cash pension settlement loss |  | 21,100,000 |  |  |
Executive Supplemental and Director Defined Benefit Pension Plans |  |  |  |  |
Components of net periodic benefit cost |  |  |  |  |
Fair value of plan assets |  | 0 | 0 | 0 |
Discretionary contributions |  |  | 1,600,000 | $ 1,500,000 |
Expected employer contributions in next fiscal year |  | $ 1,600,000 | $ 1,600,000 |  |

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