SEGMENT REPORTING - Schedule of reportable segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Net revenues	$ 1,299.1	$ 1,385.6	$ 4,640.5	$ 4,754.6
Operating income (loss)	(280.4)	77.8	225.6	512.0
Interest expense, net	47.9	60.4	164.1	190.3
Other expense, net	132.3	14.0	332.8	9.8
(Loss) Income before income taxes	(460.6)	3.4	(271.3)	311.9
Operating Segments | Prestige
Segment Reporting Information [Line Items]
Net revenues	829.4	867.2	3,059.6	3,054.5
Operating income (loss)	78.7	108.7	542.5	531.0
Operating Segments | Consumer Beauty
Segment Reporting Information [Line Items]
Net revenues	469.7	518.4	1,580.9	1,700.1
Operating income (loss)	(189.5)	(13.3)	(111.4)	79.0
Operating Segments | Corporate
Segment Reporting Information [Line Items]
Operating income (loss)	$ (169.6)	$ (17.6)	$ (205.5)	$ (98.0)