GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Schedule of Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023
Finite-Lived Intangible Assets [Line Items]
Cost	$ 4,827.6	$ 4,905.4
Accumulated Amortization	(2,054.4)	(2,032.6)
Accumulated Impairment	(25.6)	(25.6)
Net	2,747.6	2,847.2
License agreements and collaboration agreements
Finite-Lived Intangible Assets [Line Items]
Cost	3,690.5	3,756.2
Accumulated Amortization	(1,301.3)	(1,282.6)
Accumulated Impairment	(19.6)	(19.6)
Net	2,369.6	2,454.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	742.2	750.6
Accumulated Amortization	(507.6)	(505.9)
Accumulated Impairment	(5.5)	(5.5)
Net	229.1	239.2
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	310.9	313.0
Accumulated Amortization	(182.7)	(180.6)
Accumulated Impairment	(0.5)	(0.5)
Net	127.7	131.9
Product formulations and technology
Finite-Lived Intangible Assets [Line Items]
Cost	84.0	85.6
Accumulated Amortization	(62.8)	(63.5)
Accumulated Impairment	0.0	0.0
Net	$ 21.2	$ 22.1