GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Schedule of Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Jan. 04, 2021	Jan. 06, 2020	Jun. 30, 2021	Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Cost			$ 5,416.4	$ 5,059.2
Accumulated Amortization			(1,946.5)	(1,657.0)
Accumulated Impairment			(25.6)	(25.6)
Net			3,444.3	3,376.6
License and collaboration agreements
Finite-Lived Intangible Assets [Line Items]
Cost			4,192.9	3,861.2
Accumulated Amortization			(1,229.1)	(1,021.1)
Accumulated Impairment			(19.6)	(19.6)
Net			2,944.2	2,820.5
License and collaboration agreements | King Kylie
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 649.0
License and collaboration agreements | KKW Beauty
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 180.6
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost			803.1	786.1
Accumulated Amortization			(486.3)	(427.3)
Accumulated Impairment			(5.5)	(5.5)
Net			311.3	353.3
Customer relationships | King Kylie
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 27.0
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost			330.2	325.7
Accumulated Amortization			(168.7)	(154.0)
Accumulated Impairment			(0.5)	(0.5)
Net			161.0	171.2
Product formulations and technology
Finite-Lived Intangible Assets [Line Items]
Cost			90.2	86.2
Accumulated Amortization			(62.4)	(54.6)
Accumulated Impairment			0.0	0.0
Net			$ 27.8	$ 31.6