FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Other current assets:
Securities	$ 0.7	$ 0.8
Other non-current assets:
Securities	195.2	170.6
Derivative asset	$ 0.0	$ 59.9
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other non-current assets	Other non-current assets
Total assets	$ 195.9	$ 231.3
Liabilities:
Derivative liability	$ 24.6
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other non-current liabilities
Contingent consideration obligations	$ 14.0	14.0
Total liabilities	38.6	14.0
Level 1
Other current assets:
Securities	0.7	0.8
Other non-current assets:
Securities	195.2	170.6
Derivative asset	0.0	0.0
Total assets	195.9	171.4
Liabilities:
Derivative liability	0.0
Contingent consideration obligations	0.0	0.0
Total liabilities	0.0	0.0
Level 2
Other current assets:
Securities	0.0	0.0
Other non-current assets:
Securities	0.0	0.0
Derivative asset	0.0	59.9
Total assets	0.0	59.9
Liabilities:
Derivative liability	24.6
Contingent consideration obligations	0.0	0.0
Total liabilities	24.6	0.0
Level 3
Other current assets:
Securities	0.0	0.0
Other non-current assets:
Securities	0.0	0.0
Derivative asset	0.0	0.0
Total assets	0.0	0.0
Liabilities:
Derivative liability	0.0
Contingent consideration obligations	14.0	14.0
Total liabilities	$ 14.0	$ 14.0