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Defined Benefit Plans (Tables) | 12 Months Ended
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Dec. 27, 2025
Retirement Benefits [Abstract] |
Obligations and Funded Status |
(In millions) |  |  | Pension Benefits |  |  |  | Postretirement Benefits |
|  |  | 2025 |  |  |  | 2024 |  |  |  | 2025 |  |  |  | 2024 |
Change in the Projected Benefit Obligation (PBO): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Projected benefit obligation at beginning of year |  |  | $ | 206.5 |  |  |  | $ | 509.7 |  |  |  | $ | 5.6 |  |  |  | $ | 8.0 |
Service cost |  |  |  | — |  |  |  |  | — |  |  |  |  | 0.1 |  |  |  |  | 0.4 |
Interest cost |  |  |  | 11.4 |  |  |  |  | 22.2 |  |  |  |  | 0.3 |  |  |  |  | 0.5 |
Actuarial loss (gain) |  |  |  | 8.8 |  |  |  |  | (23.9 | ) |  |  |  | (0.3 | ) |  |  |  | (0.4 | )
Benefits paid |  |  |  | (10.6 | ) |  |  |  | (34.9 | ) |  |  |  | (0.2 | ) |  |  |  | (2.8 | )
Plan amendments |  |  |  | — |  |  |  |  | — |  |  |  |  | 0.1 |  |  |  |  | — |
Settlements |  |  |  | — |  |  |  |  | (266.6 | ) |  |  |  | — |  |  |  |  | (0.1 | )
Projected benefit obligation at end of year |  |  | $ | 216.1 |  |  |  | $ | 206.5 |  |  |  | $ | 5.6 |  |  |  | $ | 5.6 |
Accumulated benefit obligation at end of year (excludes the impact of future compensation increases) |  |  | $ | 216.1 |  |  |  | $ | 206.5 |  |  |  | $ | — |  |  |  | $ | — |
Change in Plan Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  |  | $ | 177.1 |  |  |  | $ | 468.0 |  |  |  | $ | — |  |  |  | $ | — |
Actual return on plan assets |  |  |  | 20.2 |  |  |  |  | 9.1 |  |  |  |  | — |  |  |  |  | — |
Employer contributions |  |  |  | 1.6 |  |  |  |  | 1.5 |  |  |  |  | 1.0 |  |  |  |  | 1.2 |
Benefits paid |  |  |  | (10.6 | ) |  |  |  | (34.9 | ) |  |  |  | (1.0 | ) |  |  |  | (1.2 | )
Settlements |  |  |  | — |  |  |  |  | (266.6 | ) |  |  |  | — |  |  |  |  | — |
Fair value of plan assets at end of year |  |  | $ | 188.3 |  |  |  | $ | 177.1 |  |  |  | $ | — |  |  |  | $ | — |
Funded status (Fair value of plan assets less PBO) |  |  | $ | (27.8 | ) |  |  | $ | (29.4 | ) |  |  | $ | (5.6 | ) |  |  | $ | (5.6 | )
Amounts Recognized in Consolidated Balance Sheets | Amounts recognized in the Consolidated Balance Sheets consist of:
|  | Pension Benefits |  |  |  | Postretirement Benefits |
(In millions) |  | 2025 |  |  |  | 2024 |  |  |  | 2025 |  |  |  | 2024 |
Other current liabilities |  | $ | (9.1 | ) |  |  | $ | (1.6 | ) |  |  | $ | (1.2 | ) |  |  | $ | (1.0 | )
Other non-current liabilities |  |  | (18.7 | ) |  |  |  | (27.8 | ) |  |  |  | (4.4 | ) |  |  |  | (4.6 | )
Net amount recognized |  | $ | (27.8 | ) |  |  | $ | (29.4 | ) |  |  | $ | (5.6 | ) |  |  | $ | (5.6 | )
Amounts in Accumulated Other Comprehensive Loss that have not yet been Recognized as Components of Net Periodic Benefit Cost | The amounts in accumulated other comprehensive loss on the Consolidated Balance Sheets that have not yet been recognized as components of net periodic benefit cost were as follows:
(In millions) |  | Pension Benefits |  |  |  | Postretirement Benefits |
Net unrecognized actuarial loss (gain) at December 30, 2023 |  | $ | 35.2 |  |  |  | $ | 0.6 |
Recognition of actuarial gain |  |  | 0.5 |  |  |  |  | 0.3 |
Current year actuarial (gain) |  |  | (3.9 | ) |  |  |  | (1.4 | )
Recognition actuarial loss due to settlement |  |  | (19.0 | ) |  |  |  | — |
Net unrecognized actuarial loss at December 28, 2024 |  | $ | 12.8 |  |  |  | $ | (0.5 | )
Recognition of actuarial gain |  |  | — |  |  |  |  | 0.3 |
Current year actuarial (gain) |  |  | (0.7 | ) |  |  |  | (0.3 | )
Recognition of actuarial loss due to settlement |  |  | — |  |  |  |  | — |
Net unrecognized actuarial loss (gain) at December 27, 2025 |  | $ | 12.1 |  |  |  | $ | (0.5 | )
Components of Net Periodic Benefit Cost for Pension and Postretirement Benefits | Components of net periodic benefit cost were as follows:
|  | Pension Benefits |  |  |  | Postretirement Benefits |
(In millions) |  | 2025 |  |  |  | 2024 |  |  | 2023 |  |  |  | 2025 |  |  |  | 2024 |  |  | 2023 |
Service cost |  | $ | — |  |  |  | $ | — |  |  | $ | 0.1 |  |  |  | $ | 0.1 |  |  |  | $ | 0.4 |  |  | $ | 0.4 |
Interest cost |  |  | 11.4 |  |  |  |  | 22.2 |  |  |  | 27.2 |  |  |  |  | 0.3 |  |  |  |  | 0.5 |  |  |  | 0.5 |
Expected return on plan assets |  |  | (10.7 | ) |  |  |  | (29.1 | ) |  |  | (28.6 | ) |  |  |  | — |  |  |  |  | — |  |  |  | — |
Recognition of actuarial gains |  |  | — |  |  |  |  | (0.5 | ) |  |  | — |  |  |  |  | (0.3 | ) |  |  |  | (0.3 | ) |  |  | (2.6 | )
Settlement loss |  |  | — |  |  |  |  | 19.0 |  |  |  | 2.0 |  |  |  |  | — |  |  |  |  | — |  |  |  | — |
Net periodic benefit cost (income) |  | $ | 0.7 |  |  |  | $ | 11.6 |  |  | $ | 0.7 |  |  |  | $ | 0.1 |  |  |  | $ | 0.6 |  |  | $ | (1.7 | )
Schedule of Assumptions Used |
|  | Pension Benefits |  |  |  | Postretirement Benefits |
|  | 2025 |  |  |  | 2024 |  |  | 2023 |  |  |  | 2025 |  |  |  | 2024 |  |  | 2023 |
Weighted-Average Assumption Used to Determine Benefit Obligations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | 4.9 | % |  |  |  | 5.7 | % |  |  | 5.0 | % |  |  |  | 6.5 | % |  |  |  | 7.1 | % |  |  | 6.0 | %
Weighted-Average Assumptions Used to Determine Net Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | 5.7 | % |  |  |  | 5.0 | % |  |  | 5.2 | % |  |  |  | 7.1 | % |  |  |  | 6.0 | % |  |  | 5.8 | %
Expected long-term rate of return on plan assets |  |  | 6.2 | % |  |  |  | 7.3 | % |  |  | 6.1 | % |  |  |  | — |  |  |  |  | — |  |  |  | — |
Assumed Health Care Cost Trend Rates Used to Determine Benefit Obligations and Net Cost |
|  | Postretirement Benefits
|  | 2025 |  |  |  | 2024 |  |
Assumed Health Care Cost Trend Rates Used to Determine Benefit Obligations: |  |  |  |  |  |  |  |
Health care cost trend rate assumed for next year |  | 6.9/7.4 | % | (a) |  | 7.1/7.5 | % | (a)
Rate that the cost trend rate is assumed to decline (the ultimate trend rate) |  | 4.5 | % |  |  | 4.5 | % |
Year that the rate reaches the ultimate trend rate |  | 2035 |  |  |  | 2035 |  |
Assumed Health Care Cost Trend Rates Used to Determine Net Cost: |  |  |  |  |  |  |  |
Health care cost trend rate assumed for next year |  | 7.1/7.5 | % | (a) |  | 7.3/6.9 | % | (a)
Rate that the cost trend rate is assumed to decline (the ultimate trend rate) |  | 4.5 | % |  |  | 4.5 | % |
Year that the rate reaches the ultimate trend rate |  | 2035 |  |  |  | 2033 |  |
(a) The pre-65 initial health care cost trend rate is shown first / followed by the post-65 rate.
Fair Value of Pension Assets by Major Category of Plan Assets | The fair value of the pension assets by major category of plan assets as of December 27, 2025 and December 28, 2024 were as follows:
2025 |
| Total Fair Value |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |
Cash and cash equivalents | $ | 34.1 |  | $ | 34.1 |  | $ | — |  | $ | — |
Other investments (a) |  | 139.3 |  |  | — |  |  | — |  |  | 139.3 |
Fair value excluding investments measured at net asset value | $ | 173.4 |  |  |  |  |  |  |
Collective trusts: |  |  |  |  |  |  |  |
Fixed income |  | 14.9 |  |  |  |  |  |  |
Investments measured at net asset value | $ | 14.9 |  |  |  |  |  |  |
Total plan assets at fair value | $ | 188.3 |  |  |  |  |  |  |
(a) - Other investments consist of buy-in annuity contract assets.
2024 |
| Total Fair Value |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |
Cash and cash equivalents | $ | 2.6 |  | $ | 2.6 |  | $ | — |  | $ | — |
Other investments (a) |  | 23.8 |  |  | — |  |  | 23.8 |  |  | — |
Fair value excluding investments measured at net asset value | $ | 26.4 |  |  |  |  |  |  |
Collective trusts: |  |  |  |  |  |  |  |
Equity | $ | 27.3 |  |  |  |  |  |  |
Fixed income |  | 95.1 |  |  |  |  |  |  |
Multi-strategy hedge funds |  | 12.1 |  |  |  |  |  |  |
Real estate |  | 16.2 |  |  |  |  |  |  |
Investments measured at net asset value | $ | 150.7 |  |  |  |  |  |  |
Total plan assets at fair value | $ | 177.1 |  |  |  |  |  |  |
(a) - Other investments consist of future contracts on U.S. Treasury notes and bonds primarily used to hedge interest rate exposures.
Reconciliation of Level Three Measurements | A reconciliation of Level 3 measurements was as follows:
|  | Group annuity/ insurance contracts |
(In millions) |  | 2025 |  |  |  | 2024 |
Beginning of year |  | $ | — |  |  |  | $ | 26.8 |
Purchases |  |  | 139.3 |  |  |  |  | — |
Losses on assets during the period |  |  | — |  |  |  |  | (0.6 | )
Sales and settlements |  |  | — |  |  |  |  | (26.2 | )
End of year |  | $ | 139.3 |  |  |  | $ | — |
Schedule of Expected Benefit Payments | The following retirement benefit payments are expected to be paid:
(In millions) |  | Pension Benefits |  |  |  | Postretirement Benefits |
2026 |  | $ | 197.5 |  |  |  | $ | 1.2 |
2027 |  |  | 1.6 |  |  |  |  | 1.1 |
2028 |  |  | 1.5 |  |  |  |  | 1.0 |
2029 |  |  | 1.6 |  |  |  |  | 1.0 |
2030 |  |  | 1.5 |  |  |  |  | 0.9 |
Years 2031-2035 |  |  | 7.2 |  |  |  |  | 4.7 |

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