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STOCK-BASED COMPENSATION - Stock Activity (Details) - USD ($)
$ / shares in Units, shares in Millions
 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]      
Aggregate intrinsic value, options outstanding $ 4,600,000    
Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 490.0 873.0  
Employee Market-Based      
Weighted-average assumptions      
Risk-free interest rate 4.00%   0.10%
Expected stock price volatility 36.60%   37.30%
Expected service period (years) 2 years 9 months 18 days   1 year 6 months
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 4.00%   0.20%
Expected stock price volatility 36.60%   36.30%
Expected service period (years) 2 years 9 months 18 days   1 year
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) 5.1    
Granted (in shares) 1.6    
Vested (in shares) (1.9)    
Forfeited (in shares) (0.4)    
Non-vested restricted stock units at the end of the year (in shares) 4.4 5.1  
Weighted Average Fair Value on Grant Date      
Non-vested restricted stock at the beginning of the year (in dollars per share) $ 126.34    
Granted (in dollars per share) 138.21    
Vested (in dollars per share) 130.24    
Forfeited (in dollars per share) 123.03    
Non-vested restricted stock at the end of the year (in dollars per share) $ 129.33 $ 126.34  
Time-based | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 97.0 192.0  
Market-based | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 295.0 510.0  
IP | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 0.0 18.0  
Recurrent consumer spending | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 98.0 153.0  
Total Performance-based | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 98.0 171.0  
Market-based restricted shares      
Shares      
Non-vested restricted stock units at the beginning of the year (in shares) 0.7    
Granted (in shares) 0.5    
Vested (in shares) (0.2)    
Forfeited (in shares) (0.1)    
Non-vested restricted stock units at the end of the year (in shares) 0.9 0.7  
Weighted Average Fair Value on Grant Date      
Non-vested restricted stock at the beginning of the year (in dollars per share) $ 183.72    
Granted (in dollars per share) 195.03    
Vested (in dollars per share) 276.07    
Forfeited (in dollars per share) 218.49    
Non-vested restricted stock at the end of the year (in dollars per share) $ 172.66 $ 183.72  
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) $ 113.28    
Granted (in dollars per share) 141.90    
Vested (in dollars per share) 166.02    
Forfeited (in dollars per share) 151.67    
Non-vested restricted stock at the end of the year (in dollars per share) $ 113.58 $ 113.28  
Stock Options      
Shares      
Non-vested restricted stock units at the beginning of the year (in shares) 0.7    
Granted (in shares) 0.0    
Vested (in shares) (0.1)    
Forfeited (in shares) 0.0    
Non-vested restricted stock units at the end of the year (in shares) 0.6 0.7  
Exercisable Option - (in shares) 0.6    
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) $ 49.54    
Granted (in dollars per share) 0    
Vested (in dollars per share) 38.68    
Forfeited (in dollars per share) 34.68    
Non-vested restricted stock at the end of the year (in dollars per share) 50.50 $ 49.54  
Exercisable Option - (in dollars per share) 50.02    
Vested and expected to vest (in dollar per share) $ 44.59    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]      
Aggregate intrinsic value, options outstanding $ 61,850,000 $ 46,510,000  
Aggregate intrinsic value, exercisable options outstanding 61,720,000    
Aggregate intrinsic value, Vested and expected to vest outstanding $ 130,000    
Weighted average remaining contractual life, options outstanding 3 years 5 months 12 days 4 years 6 months 10 days  
Weighted average remaining contractual life, exercisable options outstanding 3 years 5 months 12 days    
Weighted average remaining contractual life, vested and expected to vest, options outstanding 6 years 6 months 3 days    
Weighted-average assumptions      
Dividends $ 0    
Stock Options | Minimum      
Weighted-average assumptions      
Risk-free interest rate   0.60%  
Expected stock price volatility 36.00%    
Expected service period (years) 1 month 6 days    
Stock Options | Maximum      
Weighted-average assumptions      
Risk-free interest rate   2.80%  
Expected stock price volatility 46.50%    
Expected service period (years) 5 years 1 month 6 days    
Employee Stock Purchase Plan | 2017 Global Employee Stock Purchase Plan      
Weighted-average assumptions      
Expected stock price volatility   27.70%  
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 5.14% 1.40%  
Expected stock price volatility 26.30%    
Employee Stock Purchase Plan | 2017 Global Employee Stock Purchase Plan | Maximum      
Weighted-average assumptions      
Risk-free interest rate 5.51% 4.60%  
Expected stock price volatility 39.10%