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Basis of Presentation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Mar. 27, 2021	Mar. 28, 2020	Jun. 27, 2020
Basis Of Presentation [Line Items]
Carrying value of bank deposit	$ 350.9		$ 350.9
Net gain (loss) on foreign currency transactions	$ (0.3)	$ (0.1)	$ (1.4)
Maximum
Basis Of Presentation [Line Items]
Net gain (loss) on foreign currency transactions				$ (0.1)
Money Market Funds [Member]
Basis Of Presentation [Line Items]
Available-for-sale securities, debt securities					$ 521.1

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Basis of presentation.

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- Definition

Amount of 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/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
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-Publisher FASB
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