SOFTWARE DEVELOPMENT COSTS AND LICENSES (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019		Mar. 31, 2018
Capitalized software development costs and licenses
Software development costs and licenses, Current	$ 40,316	$ 28,880
Software development costs and licenses, Non-current	401,778	603,436
Software Development Costs and Licenses Related to Titles Not Released	333,063	378,030
Amortization and impairment of software development costs and licenses
Amortization of software development costs and licenses	321,956	342,870		$ 101,437
Impairment of software development costs and licenses	0	7,426		1,060
Less: Portion representing stock-based compensation	(154,031)	(149,075)		(24,610)
Amortization and impairment, net of stock-based compensation	167,925	201,221	[1]	$ 77,887	[1]
Impairment of software development		7,426
Software development costs, internally developed
Capitalized software development costs and licenses
Software development costs and licenses, Current	17,367	14,809
Software development costs and licenses, Non-current	305,970	434,712
Software development costs, externally developed
Capitalized software development costs and licenses
Software development costs and licenses, Current	10,971	3,655
Software development costs and licenses, Non-current	92,908	168,381
Licenses
Capitalized software development costs and licenses
Software development costs and licenses, Current	11,978	10,416
Software development costs and licenses, Non-current	$ 2,900	$ 343

[1] Prior period amounts have been adjusted retrospectively to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. Refer to Note 1 for further discussion.