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Investments - Narrative (Details) | Sep. 24, 2023 USD ($) security | Jun. 25, 2023 USD ($) security
--- | --- | ---
Net Investment Income [Line Items] |  |
Number of instruments in loss position | security | 119 | 95
Fair value of instruments in loss position | $ 906,800,000 | $ 520,900,000
Unrealized loss | 1,600,000 | 1,600,000
Accrued interest receivable | 13,300,000 | 10,100,000
Allowance for credit losses | $ 0 | $ 0
Cash and Cash Equivalents |  |
Net Investment Income [Line Items] |  |
Number of instruments in loss position | security | 6 | 2
Fair value of instruments in loss position | $ 92,600,000 | $ 18,500,000
Unrealized loss | $ 100,000 | $ 100,000

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