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Income Taxes - Changes in Deferred Tax Valuation Allowance (Details) - Deferred Tax Valuation Allowance - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2018 | Jul. 01, 2017 | Jul. 02, 2016
Valuation and Qualifying Accounts |  |  |
Balance at Beginning of Period | $ 2,097.8 | $ 2,174.3 | $ 2,334.5
Additions Charged to Expenses or Other Accounts | 31.8 | 44.7 | 227.5
Deductions Credited to Expenses or Other Accounts | (745.9) | (121.2) | (387.7)
Balance at End of Period | $ 1,383.7 | $ 2,097.8 | $ 2,174.3

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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