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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions									3 Months Ended
	Nov. 30, 2021	Nov. 10, 2021	Nov. 06, 2021	Oct. 20, 2021	Sep. 30, 2021	Sep. 10, 2021	Jul. 31, 2020	May 26, 2020	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 22, 2021
Related Party Transaction [Line Items]
Unearned portion of amounts advance payment reflected									$ 13.9		$ 0.7
Share-based compensation expense									31.1	$ 108.3
Sublease income									3.8	5.3
Wella Company
Related Party Transaction [Line Items]
Unearned contingent proceeds received, remaining amount									19.4
Transition Services Agreement Fees \| Wella Company
Related Party Transaction [Line Items]
Revenue from related parties									0.8	33.2
Related Party Transaction, Other Fees \| Wella Company
Related Party Transaction [Line Items]
Revenue from related parties									2.1	1.5
Wella Company
Related Party Transaction [Line Items]
Long-term payables									$ 58.5
Wella Company
Related Party Transaction [Line Items]
Equity method investment, amount sold (percentage)	4.70%		4.70%	9.40%	9.40%
Ownership percentage									25.90%
Series B Preferred Stock
Related Party Transaction [Line Items]
Conversion of convertible series B preferred stock (in shares)		123,219				285,576
Unpaid preferred stock dividends converted to common stock		$ 1.2				$ 26.4				3.5
Sale of stock, number of shares issued (in shares)							250,000	750,000
Common Class A
Related Party Transaction [Line Items]
Common shares issued upon conversion (in shares)		19,944,701				50,000,088
Common Class A \| KKR
Related Party Transaction [Line Items]
Sale of stock, number of shares issued (in shares)		19,944,701				50,000,088
KKR
Related Party Transaction [Line Items]
Unearned contingent proceeds received, liability												$ 34.0
Amount due from related parties									$ 1.9
Wella Company
Related Party Transaction [Line Items]
Accounts receivable, related parties									71.5
Accounts payable, related parties									3.0
Share-based compensation expense									1.7	1.6
Sublease income									$ 2.4	$ 2.4