SHARE-BASED COMPENSATION PLANS - Share-based Compensation Expense (Details) - USD ($) $ 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
Income tax benefits recognized in earnings related to share-based compensation	2.1	3.0	2.2
(Deficiencies) Excess tax benefits related to share-based compensation	(0.4)	1.1	0.0
Share based compensation expense	49.9	88.5	134.7
Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	49.9	88.5	134.7
Equity plan expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	49.9	88.5	134.7
Liability plan expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	0.1	0.3	1.2
Fringe expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	$ 3.0	$ 3.0	$ 1.7