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Investments - Schedule of Short-term Investments by Type (Details) - USD ($) $ in Millions	Sep. 28, 2025	Jun. 29, 2025
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 354.9	$ 489.6
Gross Unrealized Gains	0.6	0.6
Gross Unrealized Losses	(1.1)	(2.0)
Estimated Fair Value	354.4	488.2
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	146.8	192.0
Gross Unrealized Gains	0.1	0.1
Gross Unrealized Losses	0.0	0.0
Estimated Fair Value	146.9	192.1
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	136.2	196.8
Gross Unrealized Gains	0.3	0.3
Gross Unrealized Losses	(0.9)	(1.5)
Estimated Fair Value	135.6	195.6
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	60.9	79.5
Gross Unrealized Gains	0.2	0.2
Gross Unrealized Losses	(0.2)	(0.5)
Estimated Fair Value	60.9	79.2
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5.0	5.0
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Estimated Fair Value	5.0	5.0
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	6.0	16.3
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Estimated Fair Value	$ 6.0	$ 16.3

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