ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS - Capitalized Software (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Minimum
Property, Plant and Equipment [Line Items]
Amortization period (in years)	3 years
Maximum
Property, Plant and Equipment [Line Items]
Amortization period (in years)	5 years
Capitalized software development costs
Property, Plant and Equipment [Line Items]
Capitalized software development costs	$ 250.9	$ 216.8
Additions related to capitalized software development costs	$ 26.1	$ 18.3
Capitalized software development costs | Minimum
Property, Plant and Equipment [Line Items]
Amortization period (in years)	3 years
Capitalized software development costs | Maximum
Property, Plant and Equipment [Line Items]
Amortization period (in years)	5 years