SHARE-BASED COMPENSATION PLANS - Share-based Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 197.8	$ 28.4	$ 42.2
Share based compensation expense	195.4	27.4	31.8
Additional Paid-in Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	195.4	27.4	31.8
Additional Paid-in Capital | Discontinued Operations
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	0.0	2.0
Equity plan expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	195.4	25.4	24.8
Equity plan modified and cash settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	0.0	0.9	18.3
Liability plan expense (income)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	0.1	1.6	(2.0)
Fringe expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 2.3	$ 0.5	$ 1.1