EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 4,593.4	$ 8,855.2
Other comprehensive (loss) income before reclassifications	(416.6)	(148.4)
Net amounts reclassified from AOCI/(L)	(3.1)	(11.9)
Net current-period other comprehensive (loss) income	(419.7)	(160.3)
Balance, end of period	3,961.1	7,502.5
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(58.8)	158.8
Balance, end of period	(478.5)	(1.5)
Loss on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(13.3)
Other comprehensive (loss) income before reclassifications	(31.4)
Net amounts reclassified from AOCI/(L)	1.5
Net current-period other comprehensive (loss) income	(29.9)
Balance, end of period	(43.2)
Gain on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period		31.7
Other comprehensive (loss) income before reclassifications		(20.8)
Net amounts reclassified from AOCI/(L)		(7.9)
Net current-period other comprehensive (loss) income		(28.7)
Balance, end of period		3.0
Gain on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	214.8	115.0
Other comprehensive (loss) income before reclassifications	121.7	149.1
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	121.7	149.1
Balance, end of period	336.5	264.1
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(257.4)	(44.3)
Other comprehensive (loss) income before reclassifications	(506.9)	(276.7)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	(506.9)	(276.7)
Balance, end of period	(764.3)	(321.0)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(2.9)	56.4
Other comprehensive (loss) income before reclassifications	0.0	0.0
Net amounts reclassified from AOCI/(L)	(4.6)	(4.0)
Net current-period other comprehensive (loss) income	(4.6)	(4.0)
Balance, end of period	(7.5)	$ 52.4
Reclassification from accumulated other comprehensive income (loss), current period, before tax	(4.6)
Other comprehensive income (loss), tax	$ 0.0

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net period benefit cost (credit) of defined benefit plan.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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