GOODWILL AND PURCHASED INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020	Mar. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Impairment prior to re-segmentation	$ 323,100		$ 323,088
Cost of revenues		$ 951,056	1,144,755	$ 980,396
Operating Expenses		763,933	1,356,290	803,434
Polycom
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets		124,900	183,700
Product
Finite-Lived Intangible Assets [Line Items]
Impairment of Long-Lived Assets to be Disposed of	179,600
Cost of revenues	174,200	$ 863,529	1,049,826	$ 902,625
Operating Expenses	5,400
Products Reportable Segment
Finite-Lived Intangible Assets [Line Items]
Impairment prior to re-segmentation			$ 0
Products Reportable Segment | Voice
Finite-Lived Intangible Assets [Line Items]
Impairment prior to re-segmentation	47,800
Products Reportable Segment | Video
Finite-Lived Intangible Assets [Line Items]
Impairment prior to re-segmentation	112,800
Other Intangible Assets [Member] | Product
Finite-Lived Intangible Assets [Line Items]
Impairment of Long-Lived Assets to be Disposed of	175,000
Machinery and equipment | Product
Finite-Lived Intangible Assets [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 4,600