EQUITY AND CONVERTIBLE PREFERRED STOCK - Schedule of accumulated other comprehensive income (loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 4,011.7	$ 3,997.4
Other comprehensive income (loss) before reclassifications	(41.2)	(47.5)
Net amounts reclassified from AOCI/(L)	(4.5)	(2.7)
Net current-period other comprehensive income (loss)	(45.7)	(50.2)
Ending balance	3,675.2	4,181.8
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(795.1)	(662.4)
Ending balance	(840.8)	(712.6)
Gain (loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	2.1	0.7
Other comprehensive income (loss) before reclassifications	(0.2)	0.1
Net amounts reclassified from AOCI/(L)	(2.0)	0.4
Net current-period other comprehensive income (loss)	(2.2)	0.5
Ending balance	(0.1)	1.2
(Loss) gain on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(23.0)	(49.8)
Other comprehensive income (loss) before reclassifications	(3.5)	12.2
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive income (loss)	(3.5)	12.2
Ending balance	(26.5)	(37.6)
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(823.0)	(667.9)
Other comprehensive income (loss) before reclassifications	(38.3)	(59.2)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive income (loss)	(38.3)	(59.2)
Ending balance	(861.3)	(727.1)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	48.8	54.6
Other comprehensive income (loss) before reclassifications	0.8	(0.6)
Net amounts reclassified from AOCI/(L)	(2.5)	(3.1)
Net current-period other comprehensive income (loss)	(1.7)	(3.7)
Ending balance	47.1	$ 50.9
Reclassification from accumulated other comprehensive income (loss), current period, before tax	3.0
Other comprehensive income (loss), tax	$ 0.5