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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. 24, 2022 | Jun. 25, 2022
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | $ 41.8 | $ 54.0
Corporate Debt Securities [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 35.8 | 43.7
Unrealized Gain (Loss) on Investments | (1.6) | (1.9)
Assets, Fair Value Adjustment | 34.2 | 41.8
Cash [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 321.4 | 811.9
Unrealized Gain (Loss) on Investments | 0.0 | 0.0
Assets, Fair Value Adjustment | 321.4 | 811.9
Money Market Funds [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 440.0 | 12.1
Unrealized Gain (Loss) on Investments | 0.0 | 0.0
Assets, Fair Value Adjustment | 440.0 | 12.1
Certificates of Deposit [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 57.4 | 2.4
Unrealized Gain (Loss) on Investments | 0.0 | 0.0
Assets, Fair Value Adjustment | 57.4 | 2.4
Certificate of Deposit [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 1.1 |
Municipal Bonds [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 4.9 | 7.9
Unrealized Gain (Loss) on Investments | (0.1) | (0.1)
Assets, Fair Value Adjustment | 4.8 | 7.8
Cash and Cash Equivalents [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 818.8 | 824.0
Unrealized Gain (Loss) on Investments | 0.0 | 0.0
Assets, Fair Value Adjustment | 818.8 | 824.0
Short-Term Investments [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Unrealized Gain (Loss) on Investments | (1.7) | (2.0)
Assets, Fair Value Adjustment | 40.1 | $ 52.0
Short-Term Investments [Member] | Certificates of Deposit [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Unrealized Gain (Loss) on Investments | 0.0 |
Assets, Fair Value Adjustment | $ 1.1 |

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