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Share-based Compensation - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 28, 2025
Sep. 29, 2024
Sep. 28, 2025
Sep. 29, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option plan expense $ (1.3) $ 0.8 $ (0.5) $ 2.6
KKI        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options vested (in shares) 0 0 0 1,500,000
Stock option exercised (in shares)     0  
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock unit expense $ 2.0 $ 9.2 $ 8.4 $ 22.1
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) | KKI        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)     8,406,000  
Granted (in shares)     8,406,000