v3.26.3
EQUITY AND SHARE-BASED COMPENSATION - Non Option Unit Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2026
Long Term Incentive Plan      
Weighted-Average Grant-Date Fair Value      
Award vesting period (in years) 3 years    
PSUs      
Weighted-Average Grant-Date Fair Value      
Weighted-average fair value of options granted (in dollars per share) $ 43.59 $ 50.18  
PSUs | Long Term Incentive Plan      
Units      
Beginning balance (in shares) 1,770,651    
Granted (in shares) 1,174,701    
Forfeited or expired (in shares) (122,402)    
Ending balance (in shares) 2,822,950   1,770,651
Weighted-Average Grant-Date Fair Value      
Beginning balance (in dollars per share) $ 50.01    
Granted (in dollars per share) 43.02    
Forfeited or expired (in dollars per share) 48.30    
Ending balance (in dollars per share) $ 47.17   $ 50.01
Weighted- average remaining contractual term (years) 2 years 1 month 24 days   1 year 8 months 4 days
Aggregate intrinsic value ($’000's) $ 63,291   $ 39,220
Award vesting period (in years) 3 years    
Unvested grants in period (in shares) 2,822,950   1,770,651
PSUs | Long Term Incentive Plan | Minimum      
Weighted-Average Grant-Date Fair Value      
Performance target (as a percent) 0.00%    
PSUs | Long Term Incentive Plan | Maximum      
Weighted-Average Grant-Date Fair Value      
Performance target (as a percent) 200.00%    
Restricted Share Units | Long Term Incentive Plan      
Units      
Beginning balance (in shares) 1,253,715    
Granted (in shares) 880,248    
Vested (in shares) (326,528)    
Forfeited or expired (in shares) (90,397)    
Ending balance (in shares) 1,717,038   1,253,715
Weighted-Average Grant-Date Fair Value      
Beginning balance (in dollars per share) $ 30.92    
Granted (in dollars per share) 25.91    
Vested (in dollars per share) 29.28    
Forfeited or expired (in dollars per share) 29.05    
Ending balance (in dollars per share) $ 28.76   $ 30.92
Weighted- average remaining contractual term (years) 2 years 3 months 10 days   1 year 8 months 26 days
Aggregate intrinsic value ($’000's) $ 38,496   $ 27,770
Award vesting period (in years) 3 years    
Unvested grants in period (in shares) 1,717,038   1,253,715
Restricted Share Units | Other Plans      
Units      
Beginning balance (in shares) 2,122,915    
Granted (in shares) 446,964    
Forfeited or expired (in shares) (67,632)    
Ending balance (in shares) 2,502,247   2,122,915
Weighted-Average Grant-Date Fair Value      
Beginning balance (in dollars per share) $ 33.00    
Granted (in dollars per share) 24.97    
Forfeited or expired (in dollars per share) 32.66    
Ending balance (in dollars per share) $ 31.58   $ 33.00
Weighted- average remaining contractual term (years) 1 year 9 months 14 days   1 year 11 months 8 days
Aggregate intrinsic value ($’000's) $ 56,100   $ 47,023
Unvested grants in period (in shares) 2,502,247   2,122,915
Restricted Share Units | Other Plans | Minimum      
Weighted-Average Grant-Date Fair Value      
Award vesting period (in years) 1 year    
Restricted Share Units | Other Plans | Maximum      
Weighted-Average Grant-Date Fair Value      
Award vesting period (in years) 4 years    
Deferred Share Units (DSUs)      
Units      
Beginning balance (in shares) 790,968    
Granted (in shares) 13,144    
Ending balance (in shares) 804,112   790,968
Weighted-Average Grant-Date Fair Value      
Beginning balance (in dollars per share) $ 31.80    
Granted (in dollars per share) 24.02    
Ending balance (in dollars per share) $ 31.67   $ 31.80
Weighted- average remaining contractual term (years) 0 years   5 months 8 days
Aggregate intrinsic value ($’000's) $ 18,028   $ 17,070
Unvested grants in period (in shares) 804,112   790,968
Deferred Share Units (DSUs) | Deferred Share Unit Plan      
Units      
Beginning balance (in shares) 66,419    
Ending balance (in shares) 66,172   66,419
Weighted-Average Grant-Date Fair Value      
Unvested grants in period (in shares) 66,172   66,419