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Summary of Significant Accounting Policies - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Jan. 01, 2022
Net income      
Net income $ 81.5 $ 143.5 $ 229.6
Basic net income per share:      
Weighted-average shares outstanding - basic (in shares) 52.8 53.6 55.2
Net income per basic share (in dollars per share) $ 1.54 $ 2.68 $ 4.16
Diluted net income per share:      
Weighted-average shares outstanding - basic (in shares) 52.8 53.6 55.2
Diluted share equivalents: stock options and RSUs (in shares) 1.3 1.6 2.5
Weighted-average shares outstanding - diluted (in shares) 54.1 55.2 57.7
Net income per diluted share (in dollars per share) $ 1.51 $ 2.60 $ 3.98