SHARE-BASED COMPENSATION PLANS - Share-based Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	$ 91.8	$ 137.6	$ 197.8
Income tax benefits recognized in earnings related to share-based compensation	3.0	2.2	1.6
Excess tax benefits related to share-based compensation	1.1	0.0	0.2
Share based compensation expense	88.5	134.7	195.4
Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	88.5	134.7	195.4
Equity plan expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	88.5	134.7	195.4
Liability plan expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	0.3	1.2	0.1
Fringe expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	$ 3.0	$ 1.7	$ 2.3