GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Schedule of intangible assets subject to amortization (Details) - USD ($) $ in Millions	Dec. 31, 2024	Jun. 30, 2024
Finite-Lived Intangible Assets [Line Items]
Cost	$ 4,778.8	$ 4,852.3
Accumulated Amortization	(2,269.8)	(2,205.7)
Accumulated Impairment	(25.6)	(25.6)
Net	2,483.4	2,621.0
License agreements and collaboration agreements
Finite-Lived Intangible Assets [Line Items]
Cost	3,656.0	3,715.1
Accumulated Amortization	(1,476.3)	(1,422.5)
Accumulated Impairment	(19.6)	(19.6)
Net	2,160.1	2,273.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	731.4	741.8
Accumulated Amortization	(534.1)	(527.8)
Accumulated Impairment	(5.5)	(5.5)
Net	191.8	208.5
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	309.9	311.7
Accumulated Amortization	(197.5)	(192.4)
Accumulated Impairment	(0.5)	(0.5)
Net	111.9	118.8
Product formulations and technology
Finite-Lived Intangible Assets [Line Items]
Cost	81.5	83.7
Accumulated Amortization	(61.9)	(63.0)
Accumulated Impairment	0.0	0.0
Net	$ 19.6	$ 20.7