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Financial Statement Details - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 27, 2020
Dec. 29, 2019
Dec. 27, 2020
Dec. 29, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Realized gain on sale of investments $ (0.2) $ (0.1) $ (0.2) $ (0.1)
Accrued property and equipment     $ 145.0 $ 6.2