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EMPLOYEE BENEFIT PLANS - Share-Based Incentive Plans Narrative (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Oct. 19, 2017
shares
Aug. 31, 2015
Jun. 30, 2021
director
$ / shares
Dec. 31, 2020
director
$ / shares
Jun. 30, 2020
director
$ / shares
Dec. 31, 2019
director
$ / shares
Jun. 30, 2019
director
$ / shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Mar. 31, 2021
USD ($)
$ / shares
shares
Mar. 31, 2020
USD ($)
$ / shares
shares
Apr. 28, 2022
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share-based compensation, excess tax benefit amount | $               $ 7,421,000 $ 13,349,000    
Payments related to tax withholding for share-based compensation | $               (33,741,000) (17,810,000) $ (31,477,000)  
Compensation expense — equity and liability classified share awards (Note 14) | $               91,875,000 62,421,000 $ 64,345,000  
Unrecognized compensation cost | $               $ 308,144,000 $ 143,660,000    
Unrecognized compensation cost, period for recognition               1 year 8 months 12 days 2 years    
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]                      
Aggregate shares granted               2,689,459 1,044,741 1,368,079  
Granted (in usd per share) | $ / shares               $ 82.45 $ 60.60 $ 47.04  
2016 Incentive Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting period, restricted stock   4 years                  
2016 Incentive Plan | Restricted Stock                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting period, restricted stock   4 years                  
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) (12,200,000)                    
Number of shares authorized (in share) 8,000,000                    
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 2 4 1 4        
Granted (in usd per share) | $ / shares     $ 73.19 $ 63.01 $ 60.60 $ 47.21 $ 47.22        
Class B | Amended And Restated 2016 Incentive Award Plan | Subsequent Event                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Increase (decrease) in number of shares authorized (in shares)                     10,000,000
Class A | Amended And Restated 2016 Incentive Award Plan | Subsequent Event                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Increase (decrease) in number of shares authorized (in shares)                     10,000,000
April 1, 2018 | 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) 6,540,659                    
Percentage increase (decrease) to number of shares available for issuance 6.00%                    
April 1, 2018 | 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) 6,540,659                    
Percentage increase (decrease) to number of shares available for issuance 6.00%