EMPLOYEE BENEFIT PLANS - Amount recognized in Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	$ 0.5	$ 0.0
Current liabilities	(8.1)	(7.2)
Noncurrent liabilities	(549.2)	(230.6)
Funded status	(556.8)	(237.8)
AOC(L)/I	51.5	(54.2)
Net amount recognized	(505.3)	(292.0)
Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0.0	0.0
Current liabilities	(1.9)	(1.8)
Noncurrent liabilities	(61.5)	(45.9)
Funded status	(63.4)	(47.7)
AOC(L)/I	23.9	28.0
Net amount recognized	(39.5)	(19.7)
U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0.0	0.0
Current liabilities	(1.3)	(1.3)
Noncurrent liabilities	(17.5)	(27.6)
Funded status	(18.8)	(28.9)
AOC(L)/I	2.5	(15.5)
Net amount recognized	(16.3)	(44.4)
International Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0.5	0.0
Current liabilities	(4.9)	(4.1)
Noncurrent liabilities	(470.2)	(157.1)
Funded status	(474.6)	(161.2)
AOC(L)/I	25.1	(66.7)
Net amount recognized	$ (449.5)	$ (227.9)