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Income Taxes - Reconciliation of Beginning and Ending Amount of Uncertain Tax Positions Excluding Interest and Penalties (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 27, 2024
Dec. 29, 2023
Dec. 30, 2022
Unrecognized Tax Benefits [Roll Forward]      
Beginning balance $ 6.4 $ 6.1 $ 5.0
Gross increases - current-period tax positions 0.5 1.2 1.2
Settlements (1.0) (1.1) 0.0
Lapse of statute of limitations (1.0) 0.0 0.0
Foreign exchange (0.2) 0.2 (0.1)
Ending balance $ 4.7 $ 6.4 $ 6.1