v3.25.4

EMPLOYEE BENEFIT PLANS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Retirement Benefits [Abstract] |
Schedule of Changes in Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan | The changes in the benefit obligation, the changes in fair value of plan assets, and the funded status of the Company’s Pension and Post-Retirement Medical Plans as of and for the years ended December 31, 2025 and 2024 were as follows:
|  | Pension Plans |  | Post-Retirement Medical Plan
(in millions) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Change in benefit obligation: |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 489.8 |  |  | $ | 429.7 |  |  | $ | 15.6 |  |  | $ | 19.6 |
Service cost |  | 53.2 |  |  | 53.4 |  |  | 0.7 |  |  | 0.9 |
Interest cost |  | 25.0 |  |  | 20.3 |  |  | 0.8 |  |  | 0.9 |
Benefit payments |  | (32.5) |  |  | (15.5) |  |  | (2.7) |  |  | (2.4) |
Actuarial loss (gain) |  | 11.5 |  |  | 1.9 |  |  | 2.0 |  |  | (3.4) |
Projected benefit obligation at end of year |  | $ | 547.0 |  |  | $ | 489.8 |  |  | $ | 16.4 |  |  | $ | 15.6 |
Change in plan assets: |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 394.7 |  |  | $ | 349.3 |  |  | $ | — |  |  | $ | — |
Actual return on plan assets |  | 59.8 |  |  | 25.9 |  |  | — |  |  | — |
Benefits paid |  | (32.4) |  |  | (15.5) |  |  | (2.7) |  |  | (2.4) |
Employer contributions |  | 35.1 |  |  | 35.0 |  |  | 2.7 |  |  | 2.4 |
Fair value of plan assets at end of year |  | $ | 457.2 |  |  | $ | 394.7 |  |  | $ | — |  |  | $ | — |
Reconciliation of funded status: |  |  |  |  |  |  |  |
Fair value of plan assets at end of year |  | $ | 457.2 |  |  | $ | 394.7 |  |  | $ | — |  |  | $ | — |
Less projected benefit obligation at end of year |  | 547.0 |  |  | 489.8 |  |  | 16.4 |  |  | 15.6 |
Funded status at end of year |  | $ | (89.8) |  |  | $ | (95.1) |  |  | $ | (16.4) |  |  | $ | (15.6) |
Schedule of Expected Benefit Payments | Benefit payments, which reflect expected future services that the Company expects to pay are as follows for the years ended December 31:
(in millions) |  | Pension Benefits |  | Post-Retirement Medical Plan
2026 |  | $ | 41.3 |  |  | $ | 1.6 |
2027 |  | 36.2 |  |  | 1.7 |
2028 |  | 40.5 |  |  | 1.8 |
2029 |  | 45.1 |  |  | 1.6 |
2030 |  | 47.1 |  |  | 1.6 |
Years 2031-2035 |  | 296.9 |  |  | 7.8 |
Schedule of Net Periodic Benefit Cost | The components of net periodic benefit cost for the years ended December 31, 2025, 2024 and 2023 were as follows:
|  | Pension Benefits |  | Post-Retirement Medical Plan
(in millions) |  | 2025 |  | 2024 |  | 2023 |  | 2025 |  | 2024 |  | 2023
Components of net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 53.2 |  |  | $ | 53.4 |  |  | $ | 48.1 |  |  | $ | 0.7 |  |  | $ | 0.9 |  |  | $ | 0.5 |
Interest cost |  | 25.0 |  |  | 20.3 |  |  | 17.7 |  |  | 0.8 |  |  | 0.9 |  |  | 0.7 |
Expected return on plan assets |  | (27.6) |  |  | (24.4) |  |  | (19.2) |  |  | — |  |  | — |  |  | — |
Amortization of prior service cost and actuarial loss |  | 0.2 |  |  | 0.3 |  |  | — |  |  | 0.3 |  |  | 0.5 |  |  | 0.1 |
Net periodic benefit cost |  | $ | 50.8 |  |  | $ | 49.6 |  |  | $ | 46.6 |  |  | $ | 1.8 |  |  | $ | 2.3 |  |  | $ | 1.3 |
Schedule of Pre-Tax Amounts Recognized in Other Comprehensive Income (Loss) | The pre-tax amounts recognized in other comprehensive loss (income) for the years ended December 31, 2025, 2024 and 2023 were as follows:
|  | Pension Benefits |  | Post-Retirement Medical Plan
(in millions) |  | 2025 |  | 2024 |  | 2023 |  | 2025 |  | 2024 |  | 2023
Prior service costs |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 6.1 |
Net actuarial (gain) loss |  | (20.7) |  |  | 0.4 |  |  | 9.5 |  |  | 2.0 |  |  | (3.3) |  |  | (0.2) |
Amortization of losses and prior service cost |  | (0.2) |  |  | (0.3) |  |  | (0.1) |  |  | (0.3) |  |  | (0.5) |  |  | (0.1) |
Total changes in other comprehensive (income) loss |  | $ | (20.9) |  |  | $ | 0.1 |  |  | $ | 9.4 |  |  | $ | 1.7 |  |  | $ | (3.8) |  |  | $ | 5.8 |
Schedule of Pre-Tax Amounts in Accumulated Other Comprehensive Loss Not Yet Recognized as Components of Net Periodic Costs | The pre-tax amounts in accumulated other comprehensive (loss) income as of December 31, 2025 and 2024 that have not yet been recognized as components of net periodic costs were as follows:
|  | Pension Benefits |  | Post-Retirement Medical Plan
(in millions) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Prior service costs |  | $ | (0.2) |  |  | $ | (0.3) |  |  | $ | (6.5) |  |  | $ | (7.6) |
Net actuarial (loss) gain |  | (3.7) |  |  | (24.6) |  |  | 10.8 |  |  | 13.5 |
Total |  | $ | (3.9) |  |  | $ | (24.9) |  |  | $ | 4.3 |  |  | $ | 5.9 |
Schedule of Assumptions Used | The weighted average assumptions used to determine the benefit obligations as of December 31, 2025 and 2024 were as follows:
|  | Qualified Plan |  | Supplemental Plan |  | Post-Retirement Medical Plan
|  | 2025 |  | 2024 |  | 2025 |  | 2024 |  | 2025 |  | 2024
Discount rate - benefit obligations |  | 5.54 | % |  | 5.63 | % |  | 5.27 | % |  | 5.54 | % |  | 5.04 | % |  | 5.39 | %
Rate of compensation increase |  | 4.55 | % |  | 4.55 | % |  | 5.00 | % |  | 5.00 | % |  | — |  |  | — |
The weighted average assumptions used to determine the net periodic benefit costs for the years ended December 31, 2025, 2024 and 2023 were as follows:
|  | Qualified Plan |  | Supplemental Plan |  | Post-Retirement Medical Plan
|  | 2025 |  | 2024 |  | 2023 |  | 2025 |  | 2024 |  | 2023 |  | 2025 |  | 2024 |  | 2023
Discount rates: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective rate for service cost |  | 5.65% |  | 5.00% |  | 5.22% |  | 5.57% |  | 4.94% |  | 5.24% |  | 5.62% |  | 5.00% |  | 5.27%
Effective rate for interest cost |  | 5.32% |  | 4.90% |  | 5.14% |  | 5.20% |  | 4.90% |  | 5.14% |  | 5.10% |  | 4.82% |  | 5.05%
Effective rate for interest on service cost |  | 5.39% |  | 4.89% |  | 5.14% |  | 5.31% |  | 4.84% |  | 5.12% |  | 5.50% |  | 4.93% |  | 5.21%
Cash balance interest credit rate |  | 4.63% |  | 3.99% |  | 4.04% |  | 4.63% |  | 3.99% |  | 4.04% |  | N/A |  | N/A |  | N/A
Expected long-term rate of return on plan assets |  | 6.90% |  | 6.80% |  | 6.75% |  | N/A |  | N/A |  | N/A |  | N/A |  | N/A |  | N/A
Rate of compensation increase |  | 4.55% |  | 4.55% |  | 4.27% |  | 5.00% |  | 4.50% |  | 4.50% |  | N/A |  | N/A |  | N/A
Schedule of Assumed Health Care Cost Trend Rates | The assumed health care cost trend rates as of December 31, 2025 and 2024 were as follows:
|  | Post-Retirement Medical Plan
|  | 2025 |  | 2024
Health care cost trend rate assumed for next year |  | 6.8 | % |  | 5.9 | %
Rate to which the cost trend rate was assumed to decline (the ultimate trend rate) |  | 4.0 | % |  | 4.0 | %
Year that the rate reaches the ultimate trend rate |  | 2050 |  | 2049
Schedule of Fair Value of Assets of the Company's Qualified Plan | The table below presents the fair values of the assets of the Company’s Qualified Plan as of December 31, 2025 and 2024 by level of fair value hierarchy. Assets consist of collective trusts and are measured at fair value based on the closing net asset value (“NAV”) as determined by the fund manager and reported daily. As noted above, the Company’s post-retirement medical plan is funded on a pay-as-you-go basis and has no assets.
|  | Fair Value Measurements Using NAV as Practical Expedient
(in millions) |  | 2025 |  | 2024
Equities: |  |  |  |
Domestic equities |  | $ | 140.4 |  |  | $ | 121.7 |
Developed international equities |  | 58.8 |  |  | 46.6 |
Global low volatility equities |  | — |  |  | 7.9 |
Emerging market equities |  | 24.8 |  |  | 19.2 |
Fixed-income |  | 211.8 |  |  | 178.6 |
Real Estate |  | 19.4 |  |  | 18.7 |
Cash and cash equivalents |  | 2.0 |  |  | 2.0 |
Total |  | $ | 457.2 |  |  | $ | 394.7 |

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