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Cash, Cash Equivalents and Short-Term Investments - Schedule of cash, cash equivalents and short-term investments (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 29, 2024	Jun. 24, 2023
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 0.0	$ 9.8
Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	876.9	924.7
Gross unrealized loss	0.0	0.0
Fair Value	876.9	924.7
Short-Term Investments [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	0.0	9.8
Gross unrealized loss	0.0	(0.2)
Fair Value	0.0	9.6
Corporate Debt Securities [Member] | Short-Term Investments [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	0.0	6.5
Gross unrealized loss	0.0	(0.2)
Fair Value	0.0	6.3
Municipal Bonds [Member] | Short-Term Investments [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	0.0	3.1
Gross unrealized loss	0.0	0.0
Fair Value	0.0	3.1
Money Market Funds [Member] | Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	600.4	54.4
Gross unrealized loss	0.0	0.0
Fair Value	600.4	54.4
Cash [Member] | Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	238.4	853.9
Gross unrealized loss	0.0	0.0
Fair Value	238.4	853.9
Treasury bills [Member] | Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	0.0	16.4
Gross unrealized loss	0.0	0.0
Fair Value	0.0	16.4
Certificates of Deposit [Member] | Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	38.1	0.0
Gross unrealized loss	0.0	0.0
Fair Value	38.1	0.0
Certificates of Deposit [Member] | Short-Term Investments [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	0.0	0.2
Gross unrealized loss	0.0	0.0
Fair Value	$ 0.0	$ 0.2

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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-Topic 230
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