EMPLOYEE BENEFIT PLANS - Pension plans with accumulated benefit obligations in excess of plan assets (Details) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016
U.S. Pension Plan
Pension plans with accumulated benefit obligations in excess of plan assets
Projected benefit obligation	$ 18.8	$ 82.1
Accumulated benefit obligation	18.8	82.1
Fair value of plan assets	0.0	53.5
Pension plans with projected benefit obligations in excess of plan assets
Projected benefit obligation	18.8	82.1
Accumulated benefit obligation	18.8	82.1
Fair value of plan assets	0.0	53.5
International Plan
Pension plans with accumulated benefit obligations in excess of plan assets
Projected benefit obligation	695.0	203.4
Accumulated benefit obligation	631.6	194.4
Fair value of plan assets	223.9	42.2
Pension plans with projected benefit obligations in excess of plan assets
Projected benefit obligation	705.6	203.4
Accumulated benefit obligation	640.6	194.4
Fair value of plan assets	$ 230.4	$ 42.4