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Goodwill and Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 24, 2018
Jun. 25, 2017
Jun. 26, 2016
Goodwill and Intangible Assets Disclosure [Abstract]      
Goodwill impairment charges $ 247,455 $ 0 $ 0
Goodwill, Acquired During Period 248,957   2,483
Amortization of intangible assets 43,300 39,800 40,400
Investments in intangible assets 10,115 12,405 14,443
Impairment charges related to patent portfolio $ 1,000 $ 1,200 $ 6,700