XML 71 R61.htm IDEA: XBRL DOCUMENT v3.23.3
EMPLOYEE BENEFIT PLANS - Share-Based Incentive Plans (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Oct. 19, 2017
Aug. 31, 2015
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Excess tax benefits recorded     $ 7,299,000 $ 8,102,000    
Compensation expenses     42,740,000 41,399,000 $ 82,149,000 $ 82,006,000
Unrecognized compensation cost     $ 463,603,000 $ 519,704,000 $ 463,603,000 $ 519,704,000
Unrecognized compensation cost, period for recognition         3 years 4 months 24 days 2 years 9 months 18 days
Increase (reduction) to common stock available for issuance (in shares) 12,200,000          
Common stock available for issuance (in shares) 8,000,000          
Increase (reduction) to common stock available for issuance (in shares) (12,200,000)          
Annual increase to number of shares available for issuance (as a percent) 6.00%          
2006 Incentive Plan | Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Aggregate shares granted, price per share (in dollars per share)         $ 87.60 $ 84.49
2016 Incentive Plan | Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period   4 years        
2016 Incentive Plan | Director | Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Aggregate shares granted, price per share (in dollars per share)     $ 87.60 $ 84.55    
Class A Common Stock | April 1, 2018 | Amended And Restated 2016 Incentive Award Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Increase (reduction) to common stock available for issuance (in shares) (6,540,659)          
Increase (reduction) to common stock available for issuance (in shares) 6,540,659          
Common Class B | April 1, 2018 | Amended And Restated 2016 Incentive Award Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Increase (reduction) to common stock available for issuance (in shares) (6,540,659)          
Increase (reduction) to common stock available for issuance (in shares) 6,540,659