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Basis of Presentation - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 26, 2020 | Dec. 28, 2019 | Dec. 26, 2020 | Dec. 28, 2019 | Jun. 27, 2020
Basis Of Presentation [Line Items] |  |  |  |  |
Carrying value of bank deposit | $ 0.9 |  | $ 0.9 |  |
Net gain (loss) on foreign currency transactions | $ (1.1) | $ (0.4) | $ (1.0) | $ 0.1 |
Money Market Funds [Member] |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |
Available-for-sale securities, debt securities |  |  |  |  | $ 521.1

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