EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Retirement Benefits [Abstract]
Expected employer contribution	$ 2.0		$ 2.0
Components of net pension expense
Service cost	1.0	$ 1.0	2.1	$ 2.0
Interest cost	1.8	2.1	3.7	4.3
Expected return on plan assets	(3.0)	(2.8)	(6.0)	(5.7)
Recognized net actuarial loss	1.1	0.8	2.1	1.6
Net pension expense	$ 0.9	$ 1.1	$ 1.9	$ 2.2