EMPLOYEE BENEFIT PLANS - Schedule of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 8.5	$ 10.3
Interest cost	4.0	3.9
Expected return on plan assets	(2.1)	(1.9)
Amortization of prior service cost (credit)	(1.4)	(1.3)
Amortization of net loss (gain)	0.1	0.1
Net periodic benefit cost (credit)	9.1	11.1
Other Post- Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.3	0.5
Interest cost	0.5	0.6
Expected return on plan assets	0.0	0.0
Amortization of prior service cost (credit)	(1.5)	(1.4)
Amortization of net loss (gain)	0.0	0.0
Net periodic benefit cost (credit)	(0.7)	(0.3)
U.S. | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.0	0.0
Interest cost	0.2	0.2
Expected return on plan assets	0.0	0.0
Amortization of prior service cost (credit)	0.0	0.0
Amortization of net loss (gain)	(0.2)	(0.2)
Net periodic benefit cost (credit)	0.0	0.0
International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	8.2	9.8
Interest cost	3.3	3.1
Expected return on plan assets	(2.1)	(1.9)
Amortization of prior service cost (credit)	0.1	0.1
Amortization of net loss (gain)	0.3	0.3
Net periodic benefit cost (credit)	$ 9.8	$ 11.4