EMPLOYEE BENEFIT PLANS - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7.7	$ 2.0	$ 10.0	$ 4.0
Interest cost	3.2	2.2	4.9	4.4
Expected return on plan assets	(1.9)	(0.9)	(2.7)	(1.8)
Amortization of prior service cost (credit)	(1.4)	(1.3)	(2.8)	(2.6)
Amortization of net loss	1.6	1.1	3.2	2.2
Settlement loss recognized	12.8	0.0	15.9	0.0
Net periodic benefit cost	22.0	3.1	28.5	6.2
U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.0	0.0	0.0	0.0
Interest cost	0.6	0.8	1.3	1.6
Expected return on plan assets	(0.4)	(0.6)	(0.9)	(1.2)
Amortization of prior service cost (credit)	0.0	0.0	0.0	0.0
Amortization of net loss	0.5	0.3	1.0	0.6
Settlement loss recognized	12.8	0.0	15.9	0.0
Net periodic benefit cost	13.5	0.5	17.3	1.0
International Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	7.1	1.7	9.1	3.4
Interest cost	2.1	0.9	2.7	1.8
Expected return on plan assets	(1.5)	(0.3)	(1.8)	(0.6)
Amortization of prior service cost (credit)	0.1	0.1	0.2	0.2
Amortization of net loss	1.1	0.8	2.2	1.6
Settlement loss recognized	0.0	0.0	0.0	0.0
Net periodic benefit cost	8.9	3.2	12.4	6.4
US Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.3	0.3	0.6	0.6
Interest cost	0.4	0.5	0.8	1.0
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of prior service cost (credit)	(1.5)	(1.4)	(3.0)	(2.8)
Amortization of net loss	0.0	0.0	0.0	0.0
Settlement loss recognized	0.0	0.0	0.0	0.0
Net periodic benefit cost	(0.8)	(0.6)	(1.6)	(1.2)
International Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.3	0.0	0.3	0.0
Interest cost	0.1	0.0	0.1	0.0
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of prior service cost (credit)	0.0	0.0	0.0	0.0
Amortization of net loss	0.0	0.0	0.0	0.0
Settlement loss recognized	0.0	0.0	0.0	0.0
Net periodic benefit cost	$ 0.4	$ 0.0	$ 0.4	$ 0.0