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RETIREMENT PLANS AND OTHER BENEFITS (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Other Plans    
Components of net periodic cost:    
Service cost $ 0.0 $ 0.0
Interest cost 0.0 0.0
Expected return on plan assets 0.0 0.0
Amortization of actuarial (gain) loss 0.0 0.0
Net periodic cost  0.0 0.0
U.S. Plan | Pension Plan    
Components of net periodic cost:    
Service cost 0.0 0.0
Interest cost 0.3 0.3
Expected return on plan assets 0.0 0.0
Amortization of actuarial (gain) loss 0.1 0.0
Net periodic cost  0.4 0.3
Non-U.S. Plan | Pension Plan    
Components of net periodic cost:    
Service cost 0.2 0.3
Interest cost 0.6 0.7
Expected return on plan assets (1.4) (1.3)
Amortization of actuarial (gain) loss 0.6 0.5
Net periodic cost  $ 0.0 $ 0.2