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INCOME TAXES - Additional Information (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Feb. 28, 2021
Sep. 30, 2023
Sep. 30, 2022
Jun. 30, 2023
Income Tax Contingency [Line Items]        
Effective income tax rate (as a percent)   11.30% (40.40%)  
Effective canadian statutory income tax rate (as a percent)   26.50%    
Unrecognized tax benefits   $ 183.1   $ 178.7
Interest and penalties accrued   17.6   13.5
Possible decrease in tax expense in next 12 months   14.5    
Provision for deferred income tax liabilities   $ 29.2   $ 28.3
Micro Focus        
Income Tax Contingency [Line Items]        
Tax settlement resulting in long-term income tax receivable $ 42.9