ACQUISITION, GOODWILL, AND ACQUIRED INTANGIBLE ASSETS ACQUISITION, GOODWILL, AND ACQUIRED INTANGIBLE ASSETS - Acquired Intangible Assets (Details) - Polycom [Member] - USD ($) $ in Thousands		9 Months Ended
	Jul. 02, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 985,400
Amortization of Intangible Assets		$ 113,790
Finite-Lived Intangible Assets, Net		871,610
Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 538,600
Amortization of Intangible Assets		55,135
Finite-Lived Intangible Assets, Net		483,465
Finite-Lived Intangible Assets, Remaining Amortization Period	4 years 5 months 16 days
Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 245,100
Amortization of Intangible Assets		24,133
Finite-Lived Intangible Assets, Net		220,967
Finite-Lived Intangible Assets, Remaining Amortization Period	5 years
Order or Production Backlog [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 28,100
Amortization of Intangible Assets		28,100
Finite-Lived Intangible Assets, Net		0
Trademarks and Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 115,600
Amortization of Intangible Assets		6,422
Finite-Lived Intangible Assets, Net		109,178
Finite-Lived Intangible Assets, Remaining Amortization Period	8 years 6 months
In Process Research and Development [Member]
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 58,000
Indefinite-lived Intangible Assets (Excluding Goodwill)		$ 58,000