GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Schedule of Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Cost	$ 5,306.1	$ 5,416.4
Accumulated Amortization	(1,952.6)	(1,946.5)
Accumulated Impairment	(25.6)	(25.6)
Net	3,327.9	3,444.3
License agreements and collaboration agreements
Finite-Lived Intangible Assets [Line Items]
Cost	4,124.3	4,192.9
Accumulated Amortization	(1,251.1)	(1,229.1)
Accumulated Impairment	(19.6)	(19.6)
Net	2,853.6	2,944.2
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	765.7	803.1
Accumulated Amortization	(467.6)	(486.3)
Accumulated Impairment	(5.5)	(5.5)
Net	292.6	311.3
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	327.9	330.2
Accumulated Amortization	(171.2)	(168.7)
Accumulated Impairment	(0.5)	(0.5)
Net	156.2	161.0
Product formulations and technology
Finite-Lived Intangible Assets [Line Items]
Cost	88.2	90.2
Accumulated Amortization	(62.7)	(62.4)
Accumulated Impairment	0.0	0.0
Net	$ 25.5	$ 27.8