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Income Taxes - Reconciliation of Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions | 12 Months Ended
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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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- Definition 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 -URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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