SHARE-BASED COMPENSATION PLANS - Restricted Stock Narrative (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	$ 53.0	$ 91.8	$ 137.6
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	0.0	0.3	0.4
Total share-based compensation (income) expense	$ 0.0	$ 3.1	$ 2.7
Total intrinsic value of restricted shares vested and settled	$ 0.0	$ 5.0	$ 2.6