RESTRUCTURING COSTS - Schedule of restructuring costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 76.6	$ 0.9	$ 78.7	$ 35.0
Fixed Cost Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	74.4	0.0	74.4	0.0
Current Restructuring Actions and Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 2.2	$ 0.9	$ 4.3	$ 35.0