EQUITY AND CONVERTIBLE PREFERRED STOCK - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 3,062.2	$ 3,228.8	$ 4,593.4
Total other comprehensive (loss) income, net of tax	(396.9)	134.2	(397.3)
Ending balance	3,345.8	3,062.2	3,228.8
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(321.9)	(456.2)	(58.8)
Other comprehensive income (loss) before reclassifications	(406.2)	106.8
Net amounts reclassified from AOCI/(L)	10.2	27.5
Total other comprehensive (loss) income, net of tax	(396.0)	134.3	(397.4)
Ending balance	(717.9)	(321.9)	(456.2)
(Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(15.5)	(43.0)
Other comprehensive income (loss) before reclassifications	11.0	0.6
Net amounts reclassified from AOCI/(L)	8.8	26.9
Total other comprehensive (loss) income, net of tax	19.8	27.5
Ending balance	4.3	(15.5)	(43.0)
(Losses) Gains on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(32.2)	261.9
Other comprehensive income (loss) before reclassifications	36.3	(294.1)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive (loss) income, net of tax	36.3	(294.1)
Ending balance	4.1	(32.2)	261.9
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(259.3)	(683.8)
Other comprehensive income (loss) before reclassifications	(511.5)	424.5
Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive (loss) income, net of tax	(511.5)	424.5
Ending balance	(770.8)	(259.3)	(683.8)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(14.9)	8.7
Other comprehensive income (loss) before reclassifications	58.0	(24.2)
Net amounts reclassified from AOCI/(L)	1.4	0.6
Total other comprehensive (loss) income, net of tax	59.4	(23.6)
Ending balance	44.5	(14.9)	$ 8.7
Amortization of actuarial losses
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Net amounts reclassified from AOCI/(L)	1.6	0.9
Amortization of actuarial gains (losses), tax	$ 0.2	$ 0.3