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Income Taxes - Provision for Income Taxes Differs from Federal Statutory Rate (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 29, 2019
Income Tax Disclosure [Abstract]
Provision at U.S. federal statutory tax rate	$ 25.1	$ 33.5	$ (4.4)
State income taxes	0.1
Non-deductible share-based compensation	5.2	3.0	4.0
(Windfall)/shortfall related to share-based compensation	(3.8)	2.1	3.3
Non-deductible officer compensation	6.4	1.9	1.1
Business credits	(3.8)	(6.1)	(6.1)
Foreign tax differential	(6.7)	4.9	1.0
Nondeductible amortization			0.7
Foreign income inclusion	5.2	0.7	0.4
Deferred taxes on unremitted foreign earnings	3.5
Other differences	0.2	(1.4)	0.3
Provision for income taxes	$ 31.4	$ 38.6	$ 0.3

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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