EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Retirement Benefits [Abstract]
Expected employer contribution	$ 2.0		$ 2.0
Components of net pension expense
Service cost	1.0	$ 1.1	3.0	$ 3.1
Interest cost	2.1	2.0	6.4	6.1
Expected return on plan assets	(2.9)	(3.0)	(8.6)	(8.8)
Recognized net actuarial loss	0.6	0.7	2.2	2.1
Net pension expense	$ 0.8	$ 0.8	$ 3.0	$ 2.5