RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2024
Related Party Transaction [Line Items]
Gain on sale	$ (132.3)	$ (14.0)	$ (332.8)	$ (9.8)
Proceeds from contingent consideration from sale of discontinued business			15.6
Accounts receivable, related parties	572.9		572.9		$ 441.6
Accounts payable	1,279.8		1,279.8		1,405.6
Other noncurrent liabilities	384.3		384.3		$ 347.4
Share-based compensation expense (income)	12.2	20.4	47.7	73.4
Sublease income	3.1	4.2	10.5	12.6
Wella Company
Related Party Transaction [Line Items]
Other noncurrent liabilities	$ 33.3		$ 33.3
Wella Company
Related Party Transaction [Line Items]
Ownership percentage	25.84%		25.84%		25.84%
Wella Company
Related Party Transaction [Line Items]
Gain on sale	$ 0.3	0.3	$ 1.0	0.9
Accounts receivable, related parties	32.4		32.4
Share-based compensation expense (income)	0.0	0.5	0.7	1.8
Sublease income	2.0	2.1	6.3	6.2
Wella Company \| Related Party Transaction, Other Fees
Related Party Transaction [Line Items]
Gain on sale	2.6	1.4	7.2	9.9
Revenue from related parties	1.4	4.8	4.4	9.8
Wella Company \| Transition Services Agreement Fees
Related Party Transaction [Line Items]
Revenue from related parties	$ 0.0	$ 0.4	$ 0.1	$ 2.2

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