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Investments - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 28, 2020 | Jun. 30, 2019 | Jun. 24, 2018
Investments, Debt and Equity Securities [Abstract] |  |  |
Realized gain on sale of investments, net | $ (2.0) | $ 0.1 | $ 0.1

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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563 + Details
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- References No definition available. + Details
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