EMPLOYEE BENEFIT PLANS - Reconciliations of Level 3 plan assets (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets - beginning balance	$ 95.6	$ 88.8
Plan assets from acquisitions	168.7	5.2
Return on plan assets	9.8	5.6
Effect of exchange rates	3.6	(1.3)
Fair value of plan assets - ending balance	234.6	95.6
Insurance contracts and Other | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets - beginning balance	42.4	36.6
Plan assets from acquisitions	75.7	0.0
Return on plan assets	4.7	1.8
Purchases, sales and settlements, net	5.3	5.3
Effect of exchange rates	2.1	(1.3)
Fair value of plan assets - ending balance	$ 130.2	$ 42.4