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Investments - Schedule of Contractual Maturities of Marketable Investments (Details)
$ in Millions
Sep. 28, 2025
USD ($)
Debt Securities, Available-for-sale [Line Items]  
Within One Year $ 285.1
After One, Within Five Years 69.3
After Ten Years 0.0
Total 354.4
U.S. treasury securities  
Debt Securities, Available-for-sale [Line Items]  
Within One Year 121.4
After One, Within Five Years 25.5
After Ten Years 0.0
Total 146.9
Corporate bonds  
Debt Securities, Available-for-sale [Line Items]  
Within One Year 103.0
After One, Within Five Years 32.6
After Ten Years 0.0
Total 135.6
Municipal bonds  
Debt Securities, Available-for-sale [Line Items]  
Within One Year 49.7
After One, Within Five Years 11.2
After Ten Years 0.0
Total 60.9
Certificates of deposit  
Debt Securities, Available-for-sale [Line Items]  
Within One Year 5.0
After One, Within Five Years 0.0
After Ten Years 0.0
Total 5.0
Commercial paper  
Debt Securities, Available-for-sale [Line Items]  
Within One Year 6.0
After One, Within Five Years 0.0
After Ten Years 0.0
Total $ 6.0