STOCK-BASED COMPENSATION - Stock Activity (Details) - USD ($) $ / shares in Units, shares in Millions	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Aggregate intrinsic value, options outstanding	$ 93,300,000
Zelnick Media Corporation | 2017 Management Agreement
Shares
Granted (in shares)	517.0	490.0
Employee Market-Based
Weighted-average assumptions
Risk-free interest rate	4.70%	4.00%
Expected stock price volatility	34.10%	36.60%
Expected service period (years)	2 years 9 months 18 days	2 years 9 months 18 days
Dividends	$ 0	$ 0	$ 0
Employee Market-Based | Minimum
Weighted-average assumptions
Risk-free interest rate			2.60%
Expected stock price volatility			35.90%
Expected service period (years)			1 year 9 months 18 days
Employee Market-Based | Maximum
Weighted-average assumptions
Risk-free interest rate			2.80%
Expected stock price volatility			37.60%
Expected service period (years)			2 years 9 months 18 days
Non-Employee Market-Based
Weighted-average assumptions
Risk-free interest rate	4.60%	4.00%
Expected stock price volatility	34.10%	36.60%
Expected service period (years)	2 years 9 months 18 days	2 years 9 months 18 days
Dividends	$ 0	$ 0	$ 0
Non-Employee Market-Based | Minimum
Weighted-average assumptions
Risk-free interest rate			2.40%
Expected stock price volatility			34.20%
Expected service period (years)			1 year 9 months 18 days
Non-Employee Market-Based | Maximum
Weighted-average assumptions
Risk-free interest rate			2.80%
Expected stock price volatility			37.60%
Expected service period (years)			2 years 9 months 18 days
Time-based
Shares
Non-vested restricted stock units at the beginning of the year (in shares)	4.4
Granted (in shares)	1.8
Vested (in shares)	(2.0)
Forfeited (in shares)	(0.5)
Non-vested restricted stock units at the end of the year (in shares)	3.7	4.4
Weighted Average Fair Value on Grant Date
Non-vested restricted stock at the beginning of the year (in dollars per share)	$ 129.33
Granted (in dollars per share)	162.26
Vested (in dollars per share)	132.92
Forfeited (in dollars per share)	126.61
Non-vested restricted stock at the end of the year (in dollars per share)	$ 144.18	$ 129.33
Time-based | Zelnick Media Corporation | 2017 Management Agreement
Shares
Granted (in shares)	102.0	97.0
Market-based | Zelnick Media Corporation | 2017 Management Agreement
Shares
Granted (in shares)	311.0	295.0
Performance-based | Zelnick Media Corporation | 2017 Management Agreement
Shares
Granted (in shares)	104.0	98.0
Market-based restricted shares
Shares
Non-vested restricted stock units at the beginning of the year (in shares)	0.9
Granted (in shares)	0.5
Vested (in shares)	(0.2)
Forfeited (in shares)	0.0
Non-vested restricted stock units at the end of the year (in shares)	1.2	0.9
Weighted Average Fair Value on Grant Date
Non-vested restricted stock at the beginning of the year (in dollars per share)	$ 172.66
Granted (in dollars per share)	237.79
Vested (in dollars per share)	197.59
Forfeited (in dollars per share)	197.29
Non-vested restricted stock at the end of the year (in dollars per share)	$ 194.30	$ 172.66
Performance Based Awards
Shares
Non-vested restricted stock units at the beginning of the year (in shares)	3.9
Granted (in shares)	0.2
Vested (in shares)	(0.1)
Forfeited (in shares)	(0.1)
Non-vested restricted stock units at the end of the year (in shares)	3.9	3.9
Weighted Average Fair Value on Grant Date
Non-vested restricted stock at the beginning of the year (in dollars per share)	$ 113.58
Granted (in dollars per share)	178.52
Vested (in dollars per share)	131.99
Forfeited (in dollars per share)	136.95
Non-vested restricted stock at the end of the year (in dollars per share)	$ 115.40	$ 113.58
Stock Options
Shares
Non-vested restricted stock units at the beginning of the year (in shares)	0.6
Granted (in shares)	0.0
Vested (in shares)	(0.6)
Forfeited (in shares)	0.0
Non-vested restricted stock units at the end of the year (in shares)	0.0	0.6
Exercisable Option - (in shares)	0.0
Vested and expected to vest (in shares)	0.0
Weighted Average Fair Value on Grant Date
Non-vested restricted stock at the beginning of the year (in dollars per share)	$ 50.50
Granted (in dollars per share)	0
Vested (in dollars per share)	50.03
Forfeited (in dollars per share)	44.33
Non-vested restricted stock at the end of the year (in dollars per share)	33.62	$ 50.50
Exercisable Option - (in dollars per share)	33.62
Vested and expected to vest (in dollar per share)	$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Aggregate intrinsic value, options outstanding	$ 40,000.00	$ 61,850,000
Aggregate intrinsic value, exercisable options outstanding	40,000.00
Aggregate intrinsic value, Vested and expected to vest outstanding	$ 0
Weighted average remaining contractual life, options outstanding	4 years 8 months 8 days	3 years 5 months 12 days
Weighted average remaining contractual life, exercisable options outstanding	4 years 8 months 8 days
Employee Stock Purchase Plan | 2017 Global Employee Stock Purchase Plan
Weighted-average assumptions
Expected service period (years)	6 months	6 months
Dividends	$ 0	$ 0
Employee Stock Purchase Plan | 2017 Global Employee Stock Purchase Plan | Minimum
Weighted-average assumptions
Risk-free interest rate	4.42%	5.14%
Expected stock price volatility	23.60%	26.30%
Employee Stock Purchase Plan | 2017 Global Employee Stock Purchase Plan | Maximum
Weighted-average assumptions
Risk-free interest rate	5.43%	5.51%
Expected stock price volatility	25.10%	39.10%