v3.25.2
Summary of Significant Accounting Policies - Schedule of Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 28, 2025
Jun. 29, 2024
Dec. 28, 2024
Dec. 30, 2023
Non-cash investing activities - continuing operations:        
Unpaid purchases of property and equipment $ 1.6 $ 2.8    
Unpaid strategic investments 0.0 0.2    
Non-cash financing activities - continuing operations:        
Unsettled common stock proceeds from option exercises 0.0 0.1    
Reconciliation of cash, cash equivalents and restricted cash:        
Cash and cash equivalents: 149.6   $ 123.6  
Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows 197.1 135.6 $ 181.4 $ 168.2
Continuing operations        
Cash paid during the year for:        
Interest expense: 16.2 21.0    
Income taxes: 22.5 23.4    
Operating lease liabilities: 5.5 5.4    
Non-cash operating activities:        
ROU assets obtained in exchange for lease liabilities: (0.2) 4.8    
Reconciliation of cash, cash equivalents and restricted cash:        
Cash and cash equivalents: 149.6 93.2    
Restricted cash: 2.7 3.8    
Discontinued operations        
Cash paid during the year for:        
Interest expense: 1.1 1.2    
Income taxes: 5.3 2.1    
Operating lease liabilities: 6.9 6.7    
Non-cash operating activities:        
ROU assets obtained in exchange for lease liabilities: 0.6 18.4    
Reconciliation of cash, cash equivalents and restricted cash:        
Cash and cash equivalents: 43.5 36.4    
Restricted cash: $ 1.3 $ 2.2