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Summary of Significant Accounting Policies Prospective Adoption of New Accounting Pronouncements (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 24, 2017
Jun. 25, 2016
Item Effected [Line Items]      
Net Cash Provided by (Used in) Operating Activities $ 819,464 $ 773,657 $ 721,885