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LONG-TERM DEBT - Senior Unsecured Fixed Rate Notes (Details) - USD ($)
3 Months Ended 9 Months Ended
Dec. 09, 2021
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Nov. 24, 2021
Jun. 30, 2021
Feb. 18, 2020
Dec. 20, 2016
May 31, 2016
Debt Instrument [Line Items]                    
Long-term debt   $ 4,260,000,000   $ 4,260,000,000     $ 3,617,500,000      
Loss on extinguishment of debt   0 $ 0 (27,413,000) $ 0          
Debt extinguishment costs (note 22)       24,969,000 0          
Senior Notes | Senior Notes 2031                    
Debt Instrument [Line Items]                    
Debt instrument face amount           $ 650,000,000        
Debt instrument stated interest rate           4.125%        
Interest expense   6,700,000   9,400,000            
Long-term debt   650,000,000   650,000,000     0      
Senior Notes | Senior Notes 2030                    
Debt Instrument [Line Items]                    
Debt instrument face amount               $ 900,000,000    
Debt instrument stated interest rate               4.125%    
Interest expense   9,300,000 9,300,000 27,900,000 27,800,000          
Long-term debt   900,000,000   900,000,000     900,000,000      
Senior Notes | Senior Notes 2029                    
Debt Instrument [Line Items]                    
Debt instrument face amount           $ 850,000,000        
Debt instrument stated interest rate           3.875%        
Interest expense   8,200,000   11,500,000            
Long-term debt   850,000,000   850,000,000     0      
Senior Notes | Senior Notes 2028                    
Debt Instrument [Line Items]                    
Debt instrument face amount               $ 900,000,000    
Debt instrument stated interest rate               3.875%    
Interest expense   8,700,000 8,700,000 26,100,000 26,000,000          
Long-term debt   900,000,000   900,000,000     900,000,000      
Senior Notes | Senior Notes 2026                    
Debt Instrument [Line Items]                    
Debt instrument face amount                 $ 250,000,000 $ 600,000,000
Debt instrument stated interest rate                   5.875%
Interest expense   0 $ 12,500,000 21,900,000 $ 37,500,000          
Debt premium issue price percentage                 102.75%  
Long-term debt $ 850,000,000 $ 0   0     $ 850,000,000      
Redemption price 102.9375%                  
Loss on extinguishment of debt       (27,400,000)            
Debt extinguishment costs (note 22)       25,000,000            
Unamortized debt issuance costs       6,200,000            
Unamortized premium       $ (3,800,000)