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Cash, Cash Equivalents and Short-Term Investments - Schedule of cash, cash equivalents and short-term investments (Details) $ in Millions	12 Months Ended
	Jun. 25, 2022 USD ($)
Cash and Cash Equivalents [Line Items]
Amortized Cost	$ 52.0
Cash [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	811.9
Gross unrealized gain (loss)	0.0
Fair Value	811.9
Certificates of Deposit [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	2.4
Gross unrealized gain (loss)	0.0
Fair Value	2.4
Money Market Funds [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	12.1
Gross unrealized gain (loss)	0.0
Fair Value	12.1
Short-term Investments [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	54.0
Gross unrealized gain (loss)	(2.0)
Fair Value	52.0
Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	824.0
Gross unrealized gain (loss)	0.0
Fair Value	824.0
Municipal Bonds [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	7.9
Gross unrealized gain (loss)	(0.1)
Fair Value	7.8
Corporate Debt Securities [Member]
Cash and Cash Equivalents [Line Items]
Amortized Cost	43.7
Gross unrealized gain (loss)	(1.9)
Fair Value	$ 41.8

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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