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Investments - Schedule of Short-term Investments by Type (Details) - USD ($)
Dec. 29, 2024
Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 793,900,000 $ 1,137,800,000
Gross Unrealized Gains 1,100,000 200,000
Gross Unrealized Losses (4,200,000) (9,300,000)
Credit Loss Allowance 0 0
Estimated Fair Value 790,800,000 1,128,700,000
U.S. treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 338,500,000 553,300,000
Gross Unrealized Gains 400,000 0
Gross Unrealized Losses (100,000) (600,000)
Credit Loss Allowance 0 0
Estimated Fair Value 338,800,000 552,700,000
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 357,500,000 423,500,000
Gross Unrealized Gains 600,000 200,000
Gross Unrealized Losses (3,100,000) (6,700,000)
Credit Loss Allowance 0 0
Estimated Fair Value 355,000,000.0 417,000,000.0
Municipal bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 85,900,000 102,800,000
Gross Unrealized Gains 100,000 0
Gross Unrealized Losses (1,000,000.0) (2,000,000.0)
Credit Loss Allowance 0 0
Estimated Fair Value 85,000,000.0 100,800,000
Certificates of deposit    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 12,000,000.0 31,500,000
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Credit Loss Allowance 0 0
Estimated Fair Value $ 12,000,000.0 31,500,000
Commercial paper    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost   16,700,000
Gross Unrealized Gains   0
Gross Unrealized Losses   0
Credit Loss Allowance   0
Estimated Fair Value   16,700,000
U.S. agency securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost   10,000,000.0
Gross Unrealized Gains   0
Gross Unrealized Losses   0
Credit Loss Allowance   0
Estimated Fair Value   $ 10,000,000.0