EMPLOYEE BENEFIT PLANS - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 16.0	$ 2.0	$ 26.0	$ 6.0
Interest cost	2.7	2.2	7.6	6.6
Expected return on plan assets	(2.6)	(0.9)	(5.3)	(2.7)
Amortization of prior service cost (credit)	(1.4)	(1.3)	(4.2)	(3.9)
Amortization of net loss	1.5	1.1	4.7	3.3
Settlement loss recognized	0.0	0.0	15.9	0.0
Net periodic benefit cost	16.2	3.1	44.7	9.3
U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.0	0.0	0.0	0.0
Interest cost	0.2	0.8	1.5	2.4
Expected return on plan assets	0.0	(0.6)	(0.9)	(1.8)
Amortization of prior service cost (credit)	0.0	0.0	0.0	0.0
Amortization of net loss	0.4	0.3	1.4	0.9
Settlement loss recognized	0.0	0.0	15.9	0.0
Net periodic benefit cost	0.6	0.5	17.9	1.5
International Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	15.4	1.7	24.5	5.1
Interest cost	2.0	0.9	4.7	2.7
Expected return on plan assets	(2.6)	(0.3)	(4.4)	(0.9)
Amortization of prior service cost (credit)	0.1	0.1	0.3	0.3
Amortization of net loss	1.1	0.8	3.3	2.4
Settlement loss recognized	0.0	0.0	0.0	0.0
Net periodic benefit cost	16.0	3.2	28.4	9.6
U.S. Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.3	0.3	0.9	0.9
Interest cost	0.4	0.5	1.2	1.5
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of prior service cost (credit)	(1.5)	(1.4)	(4.5)	(4.2)
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)	(2.4)	(1.8)
International Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.3	0.0	0.6	0.0
Interest cost	0.1	0.0	0.2	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	$ 0.8	$ 0.0