SHARE-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) shares in Millions, $ 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]
Number of shares authorized (in shares)	114.5
Number of shares available for grant (in shares)	46.0
Total share-based compensation (income) expense	$ 91.8	$ 137.6	$ 197.8
Allocated share-based compensation income	0.0	(1.1)	(4.2)
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	91.8	138.7	202.0
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation expense	$ 0.1
Weighted-average period for unrecognized share-based compensation	4 months 17 days
Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	$ 10.7	$ 1.5	$ 0.0
Total unrecognized share-based compensation expense	$ 30.3
Weighted-average period for unrecognized share-based compensation	2 years 2 months 4 days
RSUs and Other Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation expense	$ 134.7
Weighted-average period for unrecognized share-based compensation	3 years 3 months 18 days

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