SHARE-BASED COMPENSATION PLANS - Restricted Share Units Narrative (Details) - USD ($) shares in Millions, $ in Millions			12 Months Ended
	Oct. 14, 2021	Oct. 14, 2020	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense			$ 137.6	$ 197.8	$ 28.4
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Granted (in shares)			17.5
Total share-based compensation expense			$ 131.9	197.2	26.1
Total intrinsic value of restricted shares vested and settled			$ 34.3	$ 33.5	$ 32.9
Restricted Stock Units | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	25.00%	33.30%
Restricted Stock Units | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	25.00%	33.30%
Restricted Stock Units | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	50.00%	33.30%
Restricted Stock Units | Omnibus Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			17.2	4.6	38.1
Restricted Stock Units | 2007 Stock Plan for Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			0.3	0.3	0.3