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Income Taxes - Reconciliation of Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 24, 2017
Income Tax Disclosure [Abstract]
Beginning balance	$ 24.8	$ 15.2	$ 13.4
Increase in unrecognized tax benefits related to current year tax positions	4.2	10.5	2.5
Increase in unrecognized tax benefits related to prior year tax positions			0.1
Decrease due to effective settlement with tax authorities	(6.2)
Remeasurement of unrecognized tax benefits	(2.0)
Decrease due to statute expiration	(1.9)	(0.9)	(0.8)
Ending Balance	$ 18.9	$ 24.8	$ 15.2

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Unrecognized tax benefits decreases resulting from remeasurement.

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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