RETIREMENT PLANS AND OTHER BENEFITS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Plans
Components of net periodic cost:
Service cost	$ 0.0	$ 0.0	$ 0.0	$ 0.0
Interest cost	0.1	0.0	0.1	0.1
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of actuarial (gain) loss	0.0	0.0	0.0	0.0
Net periodic cost	0.1	0.0	0.1	0.1
U.S. Plan | Pension Plan
Components of net periodic cost:
Service cost	0.0	0.0	0.0	0.0
Interest cost	0.2	0.3	0.8	1.0
Expected return on plan assets	0.0	0.0	0.0	0.0
Amortization of actuarial (gain) loss	0.0	0.1	0.2	0.1
Net periodic cost	0.2	0.4	1.0	1.1
Non-U.S. Plan | Pension Plan
Components of net periodic cost:
Service cost	0.2	0.4	0.7	1.0
Interest cost	0.6	0.7	1.8	2.0
Expected return on plan assets	(1.3)	(1.3)	(4.2)	(3.9)
Amortization of actuarial (gain) loss	0.6	0.3	1.8	1.3
Net periodic cost	$ 0.1	$ 0.1	$ 0.1	$ 0.4