EQUITY AND CONVERTIBLE PREFERRED STOCK - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 3,997.4	$ 3,345.8
Other comprehensive income (loss) before reclassifications	(47.5)	37.4
Net amounts reclassified from AOCI/(L)	(2.7)	(9.3)
Net current-period other comprehensive (loss) income	(50.2)	28.1
Ending balance	4,181.8	3,925.0
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(662.4)	(717.9)
Ending balance	(712.6)	(689.8)
Gain on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	0.7	4.3
Other comprehensive income (loss) before reclassifications	0.1	0.1
Net amounts reclassified from AOCI/(L)	0.4	(5.2)
Net current-period other comprehensive (loss) income	0.5	(5.1)
Ending balance	1.2	(0.8)
Gain (loss) on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(49.8)	4.1
Other comprehensive income (loss) before reclassifications	12.2	(52.9)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	12.2	(52.9)
Ending balance	(37.6)	(48.8)
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(667.9)	(770.8)
Other comprehensive income (loss) before reclassifications	(59.2)	88.4
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	(59.2)	88.4
Ending balance	(727.1)	(682.4)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	54.6	44.5
Other comprehensive income (loss) before reclassifications	(0.6)	1.8
Net amounts reclassified from AOCI/(L)	(3.1)	(4.1)
Net current-period other comprehensive (loss) income	(3.7)	(2.3)
Ending balance	50.9	$ 42.2
Reclassification from accumulated other comprehensive income (loss), current period, before tax	(4.5)
Other comprehensive income (loss), tax	$ 1.4