EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Retirement Benefits [Abstract]
Expected employer contribution	$ 3.0		$ 3.0
Components of net pension expense
Service cost	1.3	$ 1.1	3.8	$ 3.2
Interest cost	1.5	1.8	4.5	5.5
Expected return on plan assets	(3.2)	(3.0)	(9.5)	(9.0)
Recognized net actuarial loss	1.3	0.9	3.9	3.0
Net pension expense	$ 0.9	$ 0.8	$ 2.7	$ 2.7
Defined Benefit Plan, Type [Extensible Enumeration]			Pension Plan [Member]