INCOME TAXES - Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Deferred income tax assets:
Inventories	$ 4.4	$ 7.0
Accruals and allowances	64.1	62.1
Sales returns	16.3	15.2
Share-based compensation	4.0	5.3
Employee benefits	46.5	55.7
Net operating loss carry forwards and tax credits	376.3	308.6
Capital loss carry forwards	29.8	0.2
Interest expense limitation carry forward	173.5	102.8
Lease liability	16.1	26.0
Principal relocation lease	347.6	337.7
Property, plant and equipment	42.0	21.1
Derivative Instruments	70.5	0.3
Other	63.0	58.2
Less: valuation allowances	(274.1)	(151.4)
Net deferred income tax assets	980.0	848.8
Deferred income tax liabilities:
Intangible assets	753.6	772.4
Licensing rights	29.9	30.2
Right of use asset	22.8	26.3
Investment in partnerships	48.3	61.1
Other	31.7	17.9
Deferred income tax liabilities	886.3	907.9
Net deferred income tax (liability) asset	$ 93.7
Net deferred income tax (liability) asset		$ (59.1)