Financial Instruments and Fair Value Measurements (Schedule of Carrying Amount and Fair Value of Long-term Debt) (Details) - USD ($) $ in Millions |
Jun. 27, 2025 |
Dec. 27, 2024 |
|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions | ||
| Total debt, fair value | $ 895.3 | $ 927.0 |
| Total Debt | 907.1 | 915.6 |
| Fourteen Point Seven Five Percent Second-Out Takeback Notes | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions | ||
| Secured Debt | 501.7 | 505.4 |
| Second-Out Takeback Term Loan Due November 2028 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions | ||
| Secured Debt | 405.4 | 410.2 |
| Level 1 | Fourteen Point Seven Five Percent Second-Out Takeback Notes | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions | ||
| Total debt, fair value | 495.3 | 511.6 |
| Level 2 | Second-Out Takeback Term Loan Due November 2028 | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions | ||
| Total debt, fair value | $ 400.0 | $ 415.4 |