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Goodwill and Intangible Assets - Rollforward (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 29, 2024
Dec. 31, 2023
Jan. 01, 2023
Goodwill [Roll Forward]      
Goodwill, beginning balance $ 151.1 $ 151.1  
Additions to Goodwill 225.9 0.0  
Goodwill impairment charge (72.8) 0.0 $ (41.0)
Goodwill, ending balance 304.2 151.1 151.1
Science, Engineering & Technology      
Goodwill [Roll Forward]      
Goodwill, beginning balance 111.3 111.3  
Additions to Goodwill 222.9 0.0  
Goodwill impairment charge (72.8) 0.0  
Goodwill, ending balance 261.4 111.3 111.3
Education      
Goodwill [Roll Forward]      
Goodwill, beginning balance 39.8 39.8  
Additions to Goodwill 3.0 0.0  
Goodwill impairment charge 0.0 0.0  
Goodwill, ending balance $ 42.8 $ 39.8 $ 39.8