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Investments - Narrative (Details) - USD ($)
3 Months Ended
Sep. 26, 2021
Sep. 27, 2020
Jun. 27, 2021
Investments, Debt and Equity Securities [Abstract]      
Accrued interest receivable $ 4,100,000   $ 5,500,000
Realized gain on sale of investments 200,000 $ 0  
Credit Loss Allowance $ 0   $ 0