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Investments - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 28, 2021
Mar. 29, 2020
Mar. 28, 2021
Mar. 29, 2020
Jun. 28, 2020
Investments, Debt and Equity Securities [Abstract]          
Accrued interest receivable $ 4,000,000.0   $ 4,000,000.0   $ 4,300,000
Realized gain on sale of investments 100,000 $ 900,000 300,000 $ 1,000,000.0  
Allowance for credit loss $ 0   $ 0