EQUITY AND CONVERTIBLE PREFERRED STOCK - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 3,345.8	$ 3,062.2	$ 3,228.8
Total other comprehensive income (loss), net of tax	55.9	(396.9)	134.2
Ending balance	3,997.4	3,345.8	3,062.2
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(717.9)	(321.9)	(456.2)
Other comprehensive income (loss) before reclassifications	65.4	(406.2)
Net amounts reclassified from AOCI/(L)	(9.9)	10.2
Total other comprehensive income (loss), net of tax	55.5	(396.0)	134.3
Ending balance	(662.4)	(717.9)	(321.9)
(Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	4.3	(15.5)
Other comprehensive income (loss) before reclassifications	1.7	11.0
Net amounts reclassified from AOCI/(L)	(5.3)	8.8
Total other comprehensive income (loss), net of tax	(3.6)	19.8
Ending balance	0.7	4.3	(15.5)
(Losses) Gains on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	4.1	(32.2)
Other comprehensive income (loss) before reclassifications	(53.9)	36.3
Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive income (loss), net of tax	(53.9)	36.3
Ending balance	(49.8)	4.1	(32.2)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(770.8)	(259.3)
Other comprehensive income (loss) before reclassifications	102.9	(511.5)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive income (loss), net of tax	102.9	(511.5)
Ending balance	(667.9)	(770.8)	(259.3)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	44.5	(14.9)
Other comprehensive income (loss) before reclassifications	14.7	58.0
Net amounts reclassified from AOCI/(L)	(4.6)	1.4
Total other comprehensive income (loss), net of tax	10.1	59.4
Ending balance	54.6	44.5	$ (14.9)
Amortization of actuarial losses
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Net amounts reclassified from AOCI/(L)	6.1	1.6
Amortization of actuarial gains (losses), tax	$ 1.5	$ 0.2