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Investments - Narrative (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 27, 2022 USD ($) security | Mar. 28, 2021 USD ($) | Mar. 27, 2022 USD ($) security | Mar. 28, 2021 USD ($) | Jun. 27, 2021 USD ($) security
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |
Accrued interest receivable | $ 4,400,000 |  | $ 4,400,000 |  | $ 5,500,000
Net Investment Income [Line Items] |  |  |  |  |
Number of instruments in loss position | security | 344 |  | 344 |  | 128
Fair value of instruments in loss position | $ 653,900,000 |  | $ 653,900,000 |  | $ 206,500,000
Realized gain on sale of investments | 0 | $ 100,000 | 300,000 | $ 300,000 |
Credit Loss Allowance | $ 0 |  | $ 0 |  | $ 0
Cash and Cash Equivalents |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |
Number of instruments in loss position | security | 6 |  | 6 |  | 6
Fair value of instruments in loss position | $ 53,900,000 |  | $ 53,900,000 |  | $ 21,400,000
Unrealized loss | 100,000 |  | $ 100,000 |  | $ 100,000
Maximum |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |
Realized gain on sale of investments | $ (100,000) |  |  |  |

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