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Postretirement Plans - Schedule of Change in Benefit Obligation (Detail) - U.S. Postretirement Health Care Plans - USD ($)
$ in Millions
 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Jan. 01, 2022
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year $ 37.3 $ 47.5  
Interest cost 1.9 1.2 $ 1.1
Plan participant contributions 0.2 0.2  
Benefits paid (3.3) (3.8)  
Actuarial gain (0.3) (7.8)  
Benefit obligation at end of year $ 35.8 $ 37.3 $ 47.5