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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. 24, 2023 | Jun. 25, 2022
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | $ 9.8 | $ 54.0
Cash [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 853.9 | 811.9
Gross unrealized gain (loss) | 0.0 | 0.0
Fair Value | 853.9 | 811.9
Certificates of Deposit [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 0.2 | 2.4
Gross unrealized gain (loss) | 0.0 | 0.0
Fair Value | 0.2 | 2.4
Money Market Funds [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 54.4 | 12.1
Gross unrealized gain (loss) | 0.0 | 0.0
Fair Value | 54.4 | 12.1
Treasury bills [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 16.4 | 0.0
Gross unrealized gain (loss) | 0.0 | 0.0
Fair Value | 16.4 | 0.0
Short-Term Investments [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 9.8 | 54.0
Gross unrealized gain (loss) | (0.2) | (2.0)
Fair Value | 9.6 | 52.0
Corporate Debt Securities [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 6.5 | 43.7
Gross unrealized gain (loss) | (0.2) | (1.9)
Fair Value | 6.3 | 41.8
Municipal Bonds [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 3.1 | 7.9
Gross unrealized gain (loss) | 0.0 | (0.1)
Fair Value | 3.1 | 7.8
Cash and Cash Equivalents [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 924.7 | 824.0
Gross unrealized gain (loss) | 0.0 | 0.0
Fair Value | $ 924.7 | $ 824.0

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