v3.26.1
STOCK-BASED COMPENSATION - Schedule of Stock Activity (Details) - USD ($)
$ / shares in Units, shares in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 373.0 517.0  
Employee Market-Based      
Weighted-average assumptions      
Risk-free interest rate 3.80% 4.70% 4.00%
Expected stock price volatility 31.00% 34.10% 36.60%
Expected service period (years) 2 years 9 months 18 days 2 years 9 months 18 days 2 years 9 months 18 days
Dividends $ 0 $ 0 $ 0
Non-Employee Market-Based      
Weighted-average assumptions      
Risk-free interest rate 3.90% 4.60% 4.00%
Expected stock price volatility 31.00% 34.10% 36.60%
Expected service period (years) 2 years 9 months 18 days 2 years 9 months 18 days 2 years 9 months 18 days
Dividends $ 0 $ 0 $ 0
Time-based      
Shares      
Non-vested restricted stock units at the beginning of the year (in shares) 3.7    
Granted (in shares) 1.2    
Vested (in shares) (1.7)    
Forfeited (in shares) (0.3)    
Non-vested restricted stock units at the end of the year (in shares) 2.9 3.7  
Weighted Average Fair Value on Grant Date      
Non-vested restricted stock at the beginning of the year (in dollars per share) $ 144.18    
Granted (in dollars per share) 227.42    
Vested (in dollars per share) 141.44    
Forfeited (in dollars per share) 151.17    
Non-vested restricted stock at the end of the year (in dollars per share) $ 181.05 $ 144.18  
Time-based | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 74.0 102.0  
Market-based | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 224.0 311.0  
Performance-based | Zelnick Media Corporation | 2017 Management Agreement      
Shares      
Granted (in shares) 75.0 104.0  
Market-based restricted shares      
Shares      
Non-vested restricted stock units at the beginning of the year (in shares) 1.2    
Granted (in shares) 0.6    
Vested (in shares) (0.7)    
Forfeited (in shares) 0.0    
Non-vested restricted stock units at the end of the year (in shares) 1.1 1.2  
Weighted Average Fair Value on Grant Date      
Non-vested restricted stock at the beginning of the year (in dollars per share) $ 194.30    
Granted (in dollars per share) 234.44    
Vested (in dollars per share) 175.94    
Forfeited (in dollars per share) 229.37    
Non-vested restricted stock at the end of the year (in dollars per share) $ 231.70 $ 194.30  
Performance Based Awards      
Shares      
Non-vested restricted stock units at the beginning of the year (in shares) 3.9    
Granted (in shares) 1.0    
Vested (in shares) (0.1)    
Forfeited (in shares) (0.7)    
Non-vested restricted stock units at the end of the year (in shares) 4.1 3.9  
Weighted Average Fair Value on Grant Date      
Non-vested restricted stock at the beginning of the year (in dollars per share) $ 115.40    
Granted (in dollars per share) 225.82    
Vested (in dollars per share) 126.25    
Forfeited (in dollars per share) 212.55    
Non-vested restricted stock at the end of the year (in dollars per share) $ 125.05 $ 115.40  
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 3.80% 4.40%  
Expected stock price volatility 24.90% 23.60%  
Employee Stock Purchase Plan | 2017 Global Employee Stock Purchase Plan | Maximum      
Weighted-average assumptions      
Risk-free interest rate 4.20% 5.40%  
Expected stock price volatility 34.50% 25.10%