SEGMENT REPORTING - Reporting Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Net revenues	$ 5,892.9	$ 6,118.0	$ 5,554.1
Cost of sales	2,072.0	2,178.8	2,006.8
Advertising and consumer promotion costs	1,574.4	1,625.5	1,479.5
Other segment items	2,005.4	1,767.0	1,524.1
Operating income (loss)	241.1	546.7	543.7
Interest expense, net	214.2	252.0	257.9
Other expense, net	371.7	90.2	(419.0)
Loss (income) before income taxes	(344.8)	204.5	704.8
Depreciation and amortization	420.0	421.1	426.7
Operating Segments | Prestige
Segment Reporting Information [Line Items]
Net revenues	3,820.2	3,857.3	3,420.5
Cost of sales	1,121.6	1,170.3	1,050.0
Advertising and consumer promotion costs	1,059.7	1,072.8	951.5
Other segment items	1,058.3	1,033.5	935.3
Operating income (loss)	580.6	580.7	483.7
Depreciation and amortization	261.1	258.9	261.9
Operating Segments | Consumer Beauty
Segment Reporting Information [Line Items]
Net revenues	2,072.7	2,260.7	2,133.6
Cost of sales	946.1	1,008.5	954.9
Advertising and consumer promotion costs	514.7	552.7	528.3
Other segment items	739.3	610.2	587.1
Operating income (loss)	(127.4)	89.3	63.3
Depreciation and amortization	154.6	162.2	163.9
Operating Segments | Corporate
Segment Reporting Information [Line Items]
Net revenues	0.0	0.0	0.0
Cost of sales	4.3	0.0	1.9
Advertising and consumer promotion costs	0.0	0.0	(0.3)
Other segment items	207.8	123.3	1.7
Operating income (loss)	(212.1)	(123.3)	(3.3)
Depreciation and amortization	$ 4.3	$ 0.0	$ 0.9