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RETIREMENT PLANS AND OTHER BENEFITS (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Other Plans        
Components of net periodic cost:        
Service cost $ 0.0 $ 0.0 $ 0.0 $ 0.0
Interest cost 0.0 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  0.0 0.0 0.1 0.1
U.S. Plan | Pension Plan        
Components of net periodic cost:        
Service cost 0.0 0.0 0.0 0.1
Interest cost 0.3 0.5 1.0 1.3
Expected return on plan assets 0.0 0.0 0.0 0.0
Amortization of actuarial (gain) loss 0.1 (0.1) 0.1 (0.4)
Net periodic cost  0.4 0.4 1.1 1.0
Non-U.S. Plan | Pension Plan        
Components of net periodic cost:        
Service cost 0.4 0.4 1.0 1.1
Interest cost 0.7 0.8 2.0 2.6
Expected return on plan assets (1.3) (1.1) (3.9) (3.5)
Amortization of actuarial (gain) loss 0.3 0.4 1.3 1.2
Net periodic cost  $ 0.1 $ 0.5 $ 0.4 $ 1.4