GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Schedule of Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Finite-Lived Intangible Assets [Line Items]
Cost	$ 4,976.9	$ 4,852.3
Accumulated Amortization	(2,299.5)	(2,205.7)
Accumulated Impairment	(25.6)	(25.6)
Net	2,651.8	2,621.0
License agreements and collaboration agreements
Finite-Lived Intangible Assets [Line Items]
Cost	3,822.4	3,715.1
Accumulated Amortization	(1,495.4)	(1,422.5)
Accumulated Impairment	(19.6)	(19.6)
Net	2,307.4	2,273.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	753.8	741.8
Accumulated Amortization	(542.2)	(527.8)
Accumulated Impairment	(5.5)	(5.5)
Net	206.1	208.5
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	314.9	311.7
Accumulated Amortization	(197.4)	(192.4)
Accumulated Impairment	(0.5)	(0.5)
Net	117.0	118.8
Product formulations and technology
Finite-Lived Intangible Assets [Line Items]
Cost	85.8	83.7
Accumulated Amortization	(64.5)	(63.0)
Accumulated Impairment	0.0	0.0
Net	$ 21.3	$ 20.7