Quarterly report pursuant to Section 13 or 15(d)

EQUITY, LONG-TERM INCENTIVE COMPENSATION PLANS AND NON-CONTROLLING INTEREST - Cash-Based Long-Term Incentive Compensation (Details)

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EQUITY, LONG-TERM INCENTIVE COMPENSATION PLANS AND NON-CONTROLLING INTEREST - Cash-Based Long-Term Incentive Compensation (Details) - Cash long-term incentive plan
$ in Millions
 3 Months Ended 9 Months Ended
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Mar. 31, 2021
USD ($)
Installment
Mar. 31, 2020
USD ($)
Cash Long-Term Incentive Plan        
Cash-based long-term incentive plan, authorized amount     $ 9.4 $ 6.0
Cash long-term incentive plan, compensation expense $ 17.7 $ 14.7 54.4 $ 45.4
Cash long-term incentive plan, unrecognized compensation balance $ 123.5   $ 123.5  
Minimum        
Cash Long-Term Incentive Plan        
Cash long-term incentive plan, equal vesting installments | Installment     3  
Cash long-term incentive plan, vesting period     3 years  
Cash long-term incentive plan, percentage of equal vesting installments     33.33%  
Maximum        
Cash Long-Term Incentive Plan        
Cash long-term incentive plan, equal vesting installments | Installment     4  
Cash long-term incentive plan, vesting period     4 years  
Cash long-term incentive plan, percentage of equal vesting installments     25.00%