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Cash, Cash Equivalents and Short-Term Investments - Schedule of Cash, Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Dec. 30, 2023	Jun. 24, 2023
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	$ 2.6	$ 9.8
Cash and Cash Equivalents [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	846.1	924.7
Gross unrealized loss	0.0	0.0
Fair Value	846.1	924.7
Cash and Cash Equivalents [Member] | Cash [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	285.7	853.9
Gross unrealized loss	0.0	0.0
Fair Value	285.7	853.9
Cash and Cash Equivalents [Member] | Money Market Funds [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	509.4	54.4
Gross unrealized loss	0.0	0.0
Fair Value	509.4	54.4
Cash and Cash Equivalents [Member] | Treasury Bills [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	0.0	16.4
Gross unrealized loss	0.0	0.0
Fair Value	0.0	16.4
Cash and Cash Equivalents [Member] | Certificates of Deposit [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	51.0	0.0
Gross unrealized loss	0.0	0.0
Fair Value	51.0	0.0
Short-Term Investments [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	2.6	9.8
Gross unrealized loss	(0.0)	(0.2)
Fair Value	2.6	9.6
Short-Term Investments [Member] | Certificates of Deposit [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	0.0	0.2
Gross unrealized loss	0.0	0.0
Fair Value	0.0	0.2
Short-Term Investments [Member] | Corporate Debt Securities [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	2.5	6.5
Gross unrealized loss	0.0	(0.2)
Fair Value	2.5	6.3
Short-Term Investments [Member] | Municipal Bonds [Member]
Cash ,Cash Equivalents & Short Term Investments
Amortized Cost	0.1	3.1
Gross unrealized loss	0.0	0.0
Fair Value	$ 0.1	$ 3.1

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
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