EMPLOYEE BENEFIT PLANS - Schedule of Reconciliation of Level 3 Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	$ 271.5
Fair value of plan assets at end of year	304.1	$ 271.5
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	9.9
Fair value of plan assets at end of year	4.6	9.9
Defined Benefit Pension Plans | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	9.9	13.1
Net purchases, issuances, and settlements	0.2	(3.6)
Actual return on plan assets	0.3	0.3
Transfers	(5.8)	0.7
Effect of currency rate changes	0.0	(0.5)
Fair value of plan assets at end of year	$ 4.6	$ 9.9