v3.26.1
Investments - Schedule of Short-term Investments (Details) - USD ($)
Jun. 28, 2026
Sep. 29, 2025
Jun. 29, 2025
Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost $ 512,900,000   $ 489,600,000  
Gross Unrealized Gains 100,000   600,000  
Gross Unrealized Losses (700,000)   (2,000,000.0)  
Credit Loss Allowance 0 $ 0 0 $ 0
Estimated Fair Value 512,300,000   488,200,000  
Corporate bonds        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost 210,300,000   196,800,000  
Gross Unrealized Gains 0   300,000  
Gross Unrealized Losses (400,000)   (1,500,000)  
Credit Loss Allowance 0   0  
Estimated Fair Value 209,900,000   195,600,000  
U.S. treasury securities        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost 185,300,000   192,000,000.0  
Gross Unrealized Gains 0   100,000  
Gross Unrealized Losses (200,000)   0  
Credit Loss Allowance 0   0  
Estimated Fair Value 185,100,000   192,100,000  
Municipal bonds        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost 86,600,000   79,500,000  
Gross Unrealized Gains 100,000   200,000  
Gross Unrealized Losses (100,000)   (500,000)  
Credit Loss Allowance 0   0  
Estimated Fair Value 86,600,000   79,200,000  
Certificates of deposit        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost 20,200,000   5,000,000.0  
Gross Unrealized Gains 0   0  
Gross Unrealized Losses 0   0  
Credit Loss Allowance 0   0  
Estimated Fair Value 20,200,000   5,000,000.0  
Commercial paper        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost 10,500,000   16,300,000  
Gross Unrealized Gains 0   0  
Gross Unrealized Losses 0   0  
Credit Loss Allowance 0   0  
Estimated Fair Value $ 10,500,000   $ 16,300,000