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Investments - Schedule of Contractual Maturities of Marketable Investments (Details) - USD ($)
$ in Millions
Sep. 29, 2024
Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items]    
Within One Year $ 787.0  
After One, Within Five Years 172.1  
After Ten Years 2.4  
Total 961.5 $ 1,128.7
U.S. treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Within One Year 444.2  
After One, Within Five Years 24.9  
After Ten Years 0.0  
Total 469.1 552.7
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Within One Year 274.7  
After One, Within Five Years 102.2  
After Ten Years 0.0  
Total 376.9 417.0
Municipal bonds    
Debt Securities, Available-for-sale [Line Items]    
Within One Year 41.2  
After One, Within Five Years 45.0  
After Ten Years 2.4  
Total 88.6 100.8
Certificates of deposit    
Debt Securities, Available-for-sale [Line Items]    
Within One Year 17.0  
After One, Within Five Years 0.0  
After Ten Years 0.0  
Total 17.0 $ 31.5
Commercial paper    
Debt Securities, Available-for-sale [Line Items]    
Within One Year 9.9  
After One, Within Five Years 0.0  
After Ten Years 0.0  
Total $ 9.9