SHARE-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) shares in Millions, $ 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]
Number of shares authorized (in shares)	114.5
Number of shares available for grant (in shares)	41.0
Total share-based compensation (income) expense	$ 53.0	$ 91.8	$ 137.6
Allocated share-based compensation income	(0.8)	0.0	(1.1)
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation expense	$ 0.0
Weighted-average period for unrecognized share-based compensation	0 years
Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	$ (3.5)	10.7	1.5
Total unrecognized share-based compensation expense	$ 4.5
Weighted-average period for unrecognized share-based compensation	1 year 7 months 13 days
RSUs and Other Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation expense	$ 103.9
Weighted-average period for unrecognized share-based compensation	2 years 9 months
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation (income) expense	$ 53.8	$ 91.8	$ 138.7

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