GOODWILL AND PURCHASED INTANGIBLE ASSETS - Carrying Value of Other Intangibles (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 26, 2020	Mar. 28, 2020
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (410,700)	$ (315,832)
Net Carrying Amount	$ 372,047	466,915
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years 8 months 12 days
Total intangible assets	$ 782,747	782,747
Existing technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	427,123	427,123
Accumulated Amortization	(260,833)	(208,848)
Net Carrying Amount	$ 166,290	218,275
Weighted Average Remaining Useful Life	2 years 7 months 6 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 240,024	240,024
Accumulated Amortization	(117,756)	(84,506)
Net Carrying Amount	$ 122,268	155,518
Weighted Average Remaining Useful Life	3 years 4 months 24 days
Trade name/Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 115,600	115,600
Accumulated Amortization	(32,111)	(22,478)
Net Carrying Amount	$ 83,489	$ 93,122
Weighted Average Remaining Useful Life	6 years 6 months