EQUITY AND CONVERTIBLE PREFERRED STOCK - Schedule of accumulated other comprehensive income (loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 3,719.0	$ 4,011.7
Ending balance	3,821.7	4,231.9
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(733.4)	(795.1)
Other comprehensive (loss) income before reclassifications	13.3	122.4
Net amounts reclassified from AOCI/(L)	1.5	(1.8)
Net current-period other comprehensive (loss) income	14.8	120.6
Ending balance	(718.6)	(674.5)
Gain (loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(1.1)	2.1
Other comprehensive (loss) income before reclassifications	(0.4)	(0.4)
Net amounts reclassified from AOCI/(L)	0.3	(0.4)
Net current-period other comprehensive (loss) income	(0.1)	(0.8)
Ending balance	(1.2)	1.3
Loss on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(204.8)	(23.0)
Other comprehensive (loss) income before reclassifications	(4.9)	(60.2)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	(4.9)	(60.2)
Ending balance	(209.7)	(83.2)
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(582.7)	(823.0)
Other comprehensive (loss) income before reclassifications	18.6	180.7
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	18.6	180.7
Ending balance	(564.1)	(642.3)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	55.2	48.8
Other comprehensive (loss) income before reclassifications	0.0	2.3
Net amounts reclassified from AOCI/(L)	1.2	(1.4)
Net current-period other comprehensive (loss) income	1.2	0.9
Ending balance	56.4	$ 49.7
Reclassification from accumulated other comprehensive income (loss), current period, before tax	(1.2)
Other comprehensive income (loss), tax	$ 2.4