ACQUISITION - Acquired Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 02, 2018	Mar. 31, 2019
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 957,854
Finite-Lived Intangible Assets, Remaining Amortization Period		4 years 10 months 19 days
Polycom [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 927,400
Finite-Lived Intangible Assets, Remaining Amortization Period	5 years 5 months 12 days
Intangible Assets Acquired	$ 985,400
Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 566,881
Finite-Lived Intangible Assets, Remaining Amortization Period		4 years 2 months 12 days
Technology-Based Intangible Assets [Member] | Polycom [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 538,600
Finite-Lived Intangible Assets, Remaining Amortization Period	4 years 11 months 12 days
Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 245,481
Finite-Lived Intangible Assets, Remaining Amortization Period		4 years 9 months 9 days
Customer Relationships [Member] | Polycom [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 245,100
Finite-Lived Intangible Assets, Remaining Amortization Period	5 years 5 months 16 days
Order or Production Backlog [Member] | Polycom [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 28,100
Finite-Lived Intangible Assets, Remaining Amortization Period	3 months
Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 115,600
Finite-Lived Intangible Assets, Remaining Amortization Period		8 years 3 months
Trademarks and Trade Names [Member] | Polycom [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 115,600
Finite-Lived Intangible Assets, Remaining Amortization Period	9 years
In Process Research and Development [Member]
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		29,892
In Process Research and Development [Member] | Polycom [Member]
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		$ 58,000