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EMPLOYEE BENEFIT PLANS - Share-Based Incentive Plans Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2015
Jun. 30, 2024
$ / shares
Mar. 31, 2024
USD ($)
director
Jun. 30, 2023
director
$ / shares
Jun. 30, 2022
director
$ / shares
Mar. 31, 2025
USD ($)
$ / shares
Mar. 31, 2024
USD ($)
$ / shares
Mar. 31, 2023
USD ($)
$ / shares
Apr. 01, 2025
shares
Oct. 24, 2024
shares
Apr. 28, 2022
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share-based compensation, excess tax benefit amount | $           $ 20,387 $ 7,468 $ 8,044      
Payments related to tax withholding for share-based compensation | $           (102,343) (70,713) (42,283)      
Compensation expense — equity and liability classified share awards (Note 14) | $           168,443 166,595 $ 156,936      
Unrecognized compensation cost | $     $ 298,100     $ 303,520 $ 298,100        
Unrecognized compensation cost, period for recognition           1 year 9 months 18 days 2 years 10 months 24 days        
Restricted Stock                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Award requisite service period           4 years          
2006 Incentive Plan | Restricted Stock                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Granted (in usd per share) | $ / shares           $ 137.59 $ 87.60 $ 84.78      
2016 Incentive Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting period, restricted stock 4 years                    
October 2024 Incentive Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Common stock, reserved for future issuance (in shares) | shares                   8,000,000  
October 2024 Incentive Plan | Subsequent Event                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Common stock, reserved for future issuance (in shares) | shares                 4,231,218    
Director | 2016 Incentive Plan | Restricted Stock                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Aggregate shares granted, number of recipients | director     6 6 6            
Granted (in usd per share) | $ / shares   $ 134.08   $ 87.60 $ 84.55            
Class B | Amended And Restated 2016 Incentive Award Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Increase (decrease) in number of shares authorized (in shares) | shares                     10,000,000
Class A | Amended And Restated 2016 Incentive Award Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Increase (decrease) in number of shares authorized (in shares) | shares                     10,000,000