Investments - Short-term Investments by Type (Details) - USD ($)	Mar. 26, 2023	Jun. 26, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,473,800,000	$ 772,200,000
Gross Unrealized Gains	700,000	100,000
Gross Unrealized Losses	(21,400,000)	(23,000,000.0)
Credit Loss Allowance	0	0
Estimated Fair Value	1,453,100,000	749,300,000
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	612,800,000	465,800,000
Gross Unrealized Gains	100,000	0
Gross Unrealized Losses	(16,700,000)	(17,800,000)
Credit Loss Allowance	0	0
Estimated Fair Value	596,200,000	448,000,000.0
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	299,000,000.0	66,500,000
Gross Unrealized Gains	400,000	0
Gross Unrealized Losses	(800,000)	(700,000)
Credit Loss Allowance	0	0
Estimated Fair Value	298,600,000	65,800,000
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	203,500,000
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Credit Loss Allowance	0
Estimated Fair Value	203,500,000
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	191,300,000	166,500,000
Gross Unrealized Gains	100,000	100,000
Gross Unrealized Losses	(3,800,000)	(4,400,000)
Credit Loss Allowance	0	0
Estimated Fair Value	187,600,000	162,200,000
U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	76,900,000	4,000,000.0
Gross Unrealized Gains	100,000	0
Gross Unrealized Losses	(100,000)	(100,000)
Credit Loss Allowance	0	0
Estimated Fair Value	76,900,000	3,900,000
Variable rate demand notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	55,600,000	69,400,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Credit Loss Allowance	0	0
Estimated Fair Value	55,600,000	$ 69,400,000
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	34,700,000
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Credit Loss Allowance	0
Estimated Fair Value	$ 34,700,000

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
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-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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-Publisher FASB
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