EQUITY - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
BALANCE	$ 9,317.7	$ 367.1	$ 984.7
Total other comprehensive income (loss), net of tax	148.4	244.0	34.8
Adjustment due to the adoption of ASU 2018-02		8.3
BALANCE	8,855.2	9,317.7	367.1
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
BALANCE	4.4	(239.7)	(274.0)
Other comprehensive income before reclassifications	155.2	238.4
Less: Net amounts reclassified from AOCI/(L)	(7.3)	5.7
Total other comprehensive income (loss), net of tax	147.9	244.1
Adjustment due to the adoption of ASU 2018-02	6.5
BALANCE	158.8	4.4	(239.7)
(Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
BALANCE	12.6	(28.9)
Other comprehensive income before reclassifications	19.2	35.9
Less: Net amounts reclassified from AOCI/(L)	(4.0)	5.6
Total other comprehensive income (loss), net of tax	15.2	41.5
Adjustment due to the adoption of ASU 2018-02	3.9
BALANCE	31.7	12.6	(28.9)
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
BALANCE	(23.7)	(2.5)
Other comprehensive income before reclassifications	138.7	(21.2)
Less: Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive income (loss), net of tax	138.7	(21.2)
Adjustment due to the adoption of ASU 2018-02	0.0
BALANCE	115.0	(23.7)	(2.5)
Amortization of actuarial losses
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Less: Net amounts reclassified from AOCI/(L)	5.2	0.4
Amortization of actuarial gains (losses), tax	1.9	0.3
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
BALANCE	(20.8)	(164.0)
Other comprehensive income before reclassifications	(23.5)	143.2
Less: Net amounts reclassified from AOCI/(L)	0.0	0.0
Total other comprehensive income (loss), net of tax	(23.5)	143.2
Adjustment due to the adoption of ASU 2018-02	0.0
BALANCE	(44.3)	(20.8)	(164.0)
Pension and Other Post-Employment Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
BALANCE	36.3	(44.3)
Other comprehensive income before reclassifications	20.8	80.5
Less: Net amounts reclassified from AOCI/(L)	(3.3)	0.1
Total other comprehensive income (loss), net of tax	17.5	80.6
Adjustment due to the adoption of ASU 2018-02	2.6
BALANCE	$ 56.4	$ 36.3	$ (44.3)