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Retirement Benefits (Details 6) - USD ($) $ in Millions | Dec. 29, 2024 | Dec. 31, 2023
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Pension Benefits [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Current assets | $ 0.0 | $ 2.4
Noncurrent assets | 16.6 | 33.6
Current liabilities | (5.2) | (5.6)
Noncurrent liabilities | (37.2) | (39.7)
Total amount recognized | (25.8) | (9.3)
Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Current assets | 0.0 | 0.0
Noncurrent assets | 0.0 | 0.0
Current liabilities | (24.9) | (26.4)
Noncurrent liabilities | (164.3) | (175.2)
Total amount recognized | $ (189.2) | $ (201.6)

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