Intangible Assets, Goodwill and Other (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Jun. 27, 2020
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 658,195	$ 657,575
Finite-Lived Intangible Assets, Accumulated Amortization	589,359	578,811
Finite-Lived Intangible Assets, Net	68,836	78,764
Intangible Assets, Gross (Excluding Goodwill)	665,525	666,770
Intangible assets, net	76,166	87,959
Intellectual Property [Member]
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	525,816	525,196
Finite-Lived Intangible Assets, Accumulated Amortization	467,130	458,418
Finite-Lived Intangible Assets, Net	58,686	66,778
Customer Relationships [Member]
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	118,335	118,335
Finite-Lived Intangible Assets, Accumulated Amortization	110,038	108,603
Finite-Lived Intangible Assets, Net	8,297	9,732
Trade Names [Member]
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	11,374	11,374
Finite-Lived Intangible Assets, Accumulated Amortization	9,521	9,265
Finite-Lived Intangible Assets, Net	1,853	2,109
Order or Production Backlog [Member]
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	170	170
Finite-Lived Intangible Assets, Accumulated Amortization	170	25
Finite-Lived Intangible Assets, Net	0	145
Patents [Member]
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,500	2,500
Finite-Lived Intangible Assets, Accumulated Amortization	2,500	2,500
Finite-Lived Intangible Assets, Net	0	0
In Process Research and Development [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 7,330	$ 9,195