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Income Taxes - Reconciliation of Change in Uncertain Tax Positions (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 28, 2020 | Jun. 30, 2019 | Jun. 24, 2018
Reconciliation of Changes in Uncertain Tax Positions [Roll Forward] |  |  |
Balance at beginning of period | $ 8.2 | $ 8.6 | $ 13.3
Decrease related to current year change in law | 0.0 | 0.0 | (4.7)
Increases related to prior year tax positions | 0.0 | 0.5 | 0.6
Decreases related to prior year tax positions | 0.0 | 0.0 | (0.1)
Settlements with tax authorities | (0.1) | 0.0 | (0.1)
Expiration of statute of limitations for assessment of taxes | (0.7) | (0.9) | (0.4)
Balance at end of period | $ 7.4 | $ 8.2 | $ 8.6

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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=120406818&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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