RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2024
Related Party Transaction [Line Items]
Gain on sale	$ (157.2)	$ 80.8	$ (200.5)	$ 4.2
Proceeds from contingent consideration from sale of discontinued business			15.6	0.0
Accounts receivable, related parties	594.3		594.3		$ 441.6
Accounts payable	1,364.6		1,364.6		1,405.6
Other noncurrent liabilities	336.1		336.1		$ 347.4
Share-based compensation expense (income)	18.4	23.3	35.4	53.0
Sublease income	3.8	4.5	7.4	8.4
Wella Company
Related Party Transaction [Line Items]
Gain on sale	0.4	0.3	0.7	0.6
Accounts receivable, related parties	26.7		26.7
Accounts payable	0.1		0.1
Share-based compensation expense (income)	0.3	0.6	0.7	1.3
Sublease income	$ 2.2	2.0	$ 4.3	4.1
Wella Company
Related Party Transaction [Line Items]
Ownership percentage	25.84%		25.84%		25.84%
Related Party Transaction, Other Fees \| Wella Company
Related Party Transaction [Line Items]
Gain on sale	$ 3.7	1.9	$ 4.6	8.5
Revenue from related parties	1.6	2.7	3.0	5.0
Transition Services Agreement Fees \| Wella Company
Related Party Transaction [Line Items]
Revenue from related parties	0.1	$ 0.8	0.1	$ 1.8
Wella Company
Related Party Transaction [Line Items]
Other noncurrent liabilities	$ 33.0		$ 33.0

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