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LONG-TERM DEBT - Additional Information (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2019
USD ($)
May 30, 2018
USD ($)
Mar. 31, 2020
USD ($)
Feb. 29, 2020
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Jun. 30, 2020
USD ($)
Oct. 30, 2019
USD ($)
Jan. 16, 2014
USD ($)
Debt Instrument [Line Items]                          
Long-term debt         $ 3,620,000,000       $ 3,620,000,000   $ 4,227,500,000    
Repayment of long-term debt                 607,500,000 $ 1,711,131,000      
Revolver | Line of Credit                          
Debt Instrument [Line Items]                          
Interest expense         0   $ 3,700,000   3,600,000 4,300,000      
Credit agreement, maximum capacity $ 750,000,000                     $ 450,000,000  
Long-term debt     $ 600,000,000   $ 0   600,000,000   $ 0 600,000,000 600,000,000    
Repayment of long-term debt           $ 600,000,000              
Proceeds from lines of credit     $ 600,000,000         $ 750,000,000          
Repayments of lines of credit       $ 750,000,000                  
Revolver | Line of Credit | LIBOR | Minimum                          
Debt Instrument [Line Items]                          
Interest addition to floating rate 1.25%                        
Revolver | Line of Credit | LIBOR | Maximum                          
Debt Instrument [Line Items]                          
Interest addition to floating rate 1.75%                        
Term Loan B                          
Debt Instrument [Line Items]                          
Debt instrument face amount   $ 1,000,000,000                     $ 800,000,000
Proceeds from issuance of debt   $ 1,000,000,000                      
Term loan period   7 years                      
Term loan quarterly repayment as percentage of principal   0.25%                      
Effective interest rate percentage         1.86%       1.86%        
Leverage ratio, compliance maximum   4                      
Leverage ratio         1.6       1.6        
Interest expense         $ 4,600,000   $ 8,500,000   $ 14,100,000 $ 27,600,000      
Long-term debt         $ 970,000,000       $ 970,000,000   $ 977,500,000    
Term Loan B | LIBOR                          
Debt Instrument [Line Items]                          
Interest addition to floating rate   1.75%