EMPLOYEE BENEFIT PLANS - Amounts in AOCI to be Amortized (Details) $ in Millions	Jun. 30, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Prior service credit (cost)	$ 3.9
Net gain (loss)	(1.3)
Total	2.6
Other Post-Employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service credit (cost)	3.3
Net gain (loss)	0.1
Total	3.4
United States | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service credit (cost)	0.0
Net gain (loss)	(1.5)
Total	(1.5)
International | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service credit (cost)	0.6
Net gain (loss)	0.1
Total	$ 0.7