v3.26.1
STOCK-BASED COMPENSATION - Stock-Based Compensation Expense Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Stock-based compensation      
Reversal of forfeiture awards $ 49.1 $ 8.3 $ 2.4
Reversal of capitalized costs 20.2 8.3 7.4
Performance and market-based restricted stock awards      
Stock-based compensation      
Fair values of restricted stock units vested 574.2 $ 526.6 $ 309.3
Restricted Stock      
Stock-based compensation      
Future unrecognized compensation cost, net of estimated forfeitures $ 664.6    
Weighted average remaining contractual terms 2 years 5 months 23 days