EQUITY AND CONVERTIBLE PREFERRED STOCK - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 3,062.2	$ 3,228.8
Other comprehensive income (loss) before reclassifications	(208.7)	24.9
Net amounts reclassified from AOCI/(L)	10.3	5.3
Net current-period other comprehensive income (loss)	(198.4)	30.2
Balance, end of period	3,792.9	3,170.5
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(321.9)	(456.2)
Balance, end of period	(520.3)	(426.0)
(Loss) gain on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(15.5)	(43.0)
Other comprehensive income (loss) before reclassifications	6.3	2.8
Net amounts reclassified from AOCI/(L)	8.2	20.4
Net current-period other comprehensive income (loss)	14.5	23.2
Balance, end of period	(1.0)	(19.8)
(Loss) gain on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(32.2)	261.9
Other comprehensive income (loss) before reclassifications	24.2	(228.7)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive income (loss)	24.2	(228.7)
Balance, end of period	(8.0)	33.2
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(259.3)	(683.8)
Other comprehensive income (loss) before reclassifications	(239.2)	250.8
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive income (loss)	(239.2)	250.8
Balance, end of period	(498.5)	(433.0)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(14.9)	8.7
Other comprehensive income (loss) before reclassifications	0.0	0.0
Net amounts reclassified from AOCI/(L)	2.1	(15.1)
Net current-period other comprehensive income (loss)	2.1	(15.1)
Balance, end of period	(12.8)	$ (6.4)
Reclassification from accumulated other comprehensive income (loss), current period, before tax	2.7
Other comprehensive income (loss), tax	$ 0.6