EQUITY - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	$ 9,317.7	$ 367.1
Other comprehensive (loss) income before reclassifications	279.4	(55.8)
Net amounts reclassified from AOCI/(L)	0.1	12.0
Total other comprehensive income, net of tax	279.5	(43.8)
Balance, end of period	9,428.5	9,810.2
Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	12.6	(28.9)
Other comprehensive (loss) income before reclassifications	7.2	39.6
Net amounts reclassified from AOCI/(L)	0.1	2.3
Total other comprehensive income, net of tax	7.3	41.9
Balance, end of period	19.9	13.0
Loss on Net Investment Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(23.7)	(2.5)
Other comprehensive (loss) income before reclassifications	(33.0)	38.1
Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive income, net of tax	(33.0)	38.1
Balance, end of period	(56.7)	35.6
Other Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(20.8)	(164.0)
Other comprehensive (loss) income before reclassifications	303.6	(133.9)
Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive income, net of tax	303.6	(133.9)
Balance, end of period	282.8	(297.9)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	36.3	(44.3)
Other comprehensive (loss) income before reclassifications	1.6	0.4
Net amounts reclassified from AOCI/(L)	0.0	9.7
Total other comprehensive income, net of tax	1.6	10.1
Balance, end of period	37.9	(34.2)
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	4.4	(239.7)
Balance, end of period	$ 283.9	$ (283.5)