REVENUE - Performance Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	$ 753,826	$ 632,582
Revenue remaining performance obligation, percentage	100.00%	100.00%
1 year or less
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	$ 433,262	$ 370,790
Revenue remaining performance obligation, percentage	58.00%	58.00%
1-2 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	$ 168,577	$ 107,524
Revenue remaining performance obligation, percentage	22.00%	17.00%
2-3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	$ 107,209	$ 79,356
Revenue remaining performance obligation, percentage	14.00%	13.00%
Greater than 3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	$ 44,778	$ 74,912
Revenue remaining performance obligation, percentage	6.00%	12.00%
Perpetual license
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	$ 6,163	$ 13,441
Perpetual license | 1 year or less
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	3,995	10,263
Perpetual license | 1-2 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	2,168	998
Perpetual license | 2-3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	0	2,180
Perpetual license | Greater than 3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	0	0
Term license
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	43,189	49,569
Term license | 1 year or less
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	30,962	44,404
Term license | 1-2 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	5,088	4,274
Term license | 2-3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	6,504	756
Term license | Greater than 3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	635	135
Maintenance
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	269,723	203,120
Maintenance | 1 year or less
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	205,083	187,324
Maintenance | 1-2 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	34,633	9,350
Maintenance | 2-3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	19,411	4,438
Maintenance | Greater than 3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	10,596	2,008
Cloud
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	414,474	351,338
Cloud | 1 year or less
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	174,277	115,548
Cloud | 1-2 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	125,473	91,539
Cloud | 2-3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	81,187	71,509
Cloud | Greater than 3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	33,537	72,742
Consulting
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	20,277	15,114
Consulting | 1 year or less
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	18,945	13,251
Consulting | 1-2 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	1,215	1,363
Consulting | 2-3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	107	473
Consulting | Greater than 3 years
Disaggregation of Revenue [Line Items]
Revenue remaining performance obligation	$ 10	$ 27