SEGMENT REPORTING, Technology Business Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Abstract]
Net sales	$ 2,225,302	$ 2,067,718	$ 1,821,019
Less: Revenue from financing and other	(65,068)	(65,846)	(68,084)
Revenue from contracts with customers	2,160,234	2,001,872	1,752,935
Product [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,933,225	1,803,275	1,580,394
Technology Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	2,175,886	2,015,245	1,733,036
Less: Revenue from financing and other	(21,578)	(22,677)	(14,943)
Revenue from contracts with customers	2,154,308	1,992,568	1,718,093
Technology Segment [Member] | Networking [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,005,679	803,678	611,488
Technology Segment [Member] | Cloud [Member]
Disaggregation of Revenue [Abstract]
Net sales	546,341	587,097	581,113
Technology Segment [Member] | Security [Member]
Disaggregation of Revenue [Abstract]
Net sales	193,956	214,459	158,927
Technology Segment [Member] | Collaboration [Member]
Disaggregation of Revenue [Abstract]
Net sales	65,714	57,472	57,244
Technology Segment [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Net sales	72,119	88,096	83,639
Technology Segment [Member] | Telecom, Media & Entertainment [Member]
Disaggregation of Revenue [Abstract]
Net sales	547,525	532,921	502,408
Technology Segment [Member] | Technology [Member]
Disaggregation of Revenue [Abstract]
Net sales	379,720	393,594	250,485
Technology Segment [Member] | SLED [Member]
Disaggregation of Revenue [Abstract]
Net sales	329,617	290,624	241,769
Technology Segment [Member] | Health Care [Member]
Disaggregation of Revenue [Abstract]
Net sales	278,893	274,936	270,481
Technology Segment [Member] | Financial Services [Member]
Disaggregation of Revenue [Abstract]
Net sales	243,630	156,257	155,160
Technology Segment [Member] | All Others [Member]
Disaggregation of Revenue [Abstract]
Net sales	396,501	366,913	312,733
Product Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,883,809	1,750,802	1,492,411
Less: Revenue from financing and other	(21,578)	(22,677)	(14,943)
Revenue from contracts with customers	1,862,231	1,728,125	1,477,468
Professional Services Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	154,549	151,785	146,747
Less: Revenue from financing and other	0	0	0
Revenue from contracts with customers	154,549	151,785	146,747
Managed Services Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	137,528	112,658	93,878
Less: Revenue from financing and other	0	0	0
Revenue from contracts with customers	$ 137,528	$ 112,658	$ 93,878