EQUITY INVESTMENT - Schedule of movement in equity investments (Details) $ in Millions	3 Months Ended
Sep. 30, 2025 USD ($)
Equity investment at fair value:
Fair value recurring basis unobservable input reconciliation asset gain loss statement of income extensible list not disclosed flag	Total gains included in earnings
Wella Company
Equity investment at fair value:
Balance as of June 30, 2025	$ 1,002.0
Total gains included in earnings	1.0
Balance as of September 30, 2025	$ 1,003.0

Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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