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Summary of Significant Accounting Policies - Cash Flow Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Dec. 31, 2022
Jan. 01, 2022
Cash paid during the year for:        
Interest expense $ 39.1 $ 51.0 $ 23.0  
Income taxes 41.9 54.4 87.3  
Operating lease liabilities 24.6 22.4 17.2  
Non-cash operating activities:        
ROU assets obtained in exchange for lease liabilities 28.6 16.3 0.0  
Non-cash investing activities:        
Unpaid purchases of property and equipment 0.7 0.2 3.8  
Unsettled common stock proceeds from option exercises 0.1 0.0 0.0  
Reconciliation of cash, cash equivalents and restricted cash:        
Cash and cash equivalents 177.6 163.0 202.9  
Restricted cash 3.8 5.2 6.7  
Total cash, cash equivalents and restricted cash shown in the statement of cash flows $ 181.4 $ 168.2 $ 209.6 $ 748.4