EQUITY - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	6 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 8,855.2	$ 9,326.0
Other comprehensive income (loss) before reclassifications	(120.9)	279.4
Net amounts reclassified from AOCI/(L)	(4.3)	0.1
Net current-period other comprehensive income (loss)	(125.2)	279.5
Balance, end of period	7,611.3	9,428.5
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	158.8	4.4
Balance, end of period	33.6	283.9
Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	31.7	12.6
Other comprehensive income (loss) before reclassifications	(11.8)	7.2
Net amounts reclassified from AOCI/(L)	(5.9)	0.1
Net current-period other comprehensive income (loss)	(17.7)	7.3
Balance, end of period	14.0	19.9
Gain on Net Investment Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	115.0	(23.7)
Other comprehensive income (loss) before reclassifications	78.6	(33.0)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive income (loss)	78.6	(33.0)
Balance, end of period	193.6	(56.7)
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(44.3)	(20.8)
Other comprehensive income (loss) before reclassifications	(187.7)	303.6
Net amounts reclassified from AOCI/(L)	0.0	0.0
Net current-period other comprehensive income (loss)	(187.7)	303.6
Balance, end of period	(232.0)	282.8
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	56.4	36.3
Other comprehensive income (loss) before reclassifications	0.0	1.6
Net amounts reclassified from AOCI/(L)	1.6	0.0
Net current-period other comprehensive income (loss)	1.6	1.6
Balance, end of period	58.0	$ 37.9
Reclassification from accumulated other comprehensive income, current period, before tax	3.0
Other comprehensive income (loss), tax	$ 1.4

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

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