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Fair Value of Financial Instruments - Reconciliation of Level 3 Fair Value (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 25, 2022
Dec. 26, 2021
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Balance at beginning of year $ (1.7) $ (20.6)
Gain from change in fair value 0.0 18.9
Balance at end of year $ (1.7) $ (1.7)