EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 8,855.2
Other comprehensive (loss) income before reclassifications	(148.4)	$ 533.0
Net amounts reclassified from AOCI/(L)	(11.9)	(1.3)
Net current-period other comprehensive (loss) income	(160.3)	531.7
Balance, end of period	7,502.5	9,499.6
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	158.8	4.4
Balance, end of period	(1.5)	536.1
Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	31.7	12.6
Other comprehensive (loss) income before reclassifications	(20.8)	15.5
Net amounts reclassified from AOCI/(L)	(7.9)	(1.3)
Net current-period other comprehensive (loss) income	(28.7)	14.2
Balance, end of period	3.0	26.8
Gain on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	115.0	(23.7)
Other comprehensive (loss) income before reclassifications	149.1	(56.7)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	149.1	(56.7)
Balance, end of period	264.1	(80.4)
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(44.3)	(20.8)
Other comprehensive (loss) income before reclassifications	(276.7)	574.9
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive (loss) income	(276.7)	574.9
Balance, end of period	(321.0)	554.1
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	56.4	36.3
Other comprehensive (loss) income before reclassifications	0.0	(0.7)
Net amounts reclassified from AOCI/(L)	(4.0)	0.0
Net current-period other comprehensive (loss) income	(4.0)	(0.7)
Balance, end of period	52.4	$ 35.6
Reclassification from accumulated other comprehensive income, current period, before tax	4.6
Other comprehensive income (loss), tax	$ 0.6

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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