RESTRUCTURING COSTS - Restructuring Costs By Program (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 42.7	$ 155.8	$ 75.6	$ 179.0
Global Integration Activities
Restructuring Cost and Reserve [Line Items]
Restructuring costs	21.3	156.5	58.2	170.1	$ 364.2
Acquisition Integration Program
Restructuring Cost and Reserve [Line Items]
Restructuring costs	(0.2)	(0.7)	(3.5)	3.9
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 21.6	$ 0.0	$ 20.9	$ 5.0