EMPLOYEE BENEFIT PLANS (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) Pension_Plan	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) Pension_Plan	Sep. 30, 2018 USD ($)
Net Periodic Benefit Cost and Other Benefit Cost
Company contributions			$ 1.5
United States
Net Periodic Benefit Cost and Other Benefit Cost
Number of pension plans (in ones) | Pension_Plan	2		2
Germany
Net Periodic Benefit Cost and Other Benefit Cost
Number of pension plans (in ones) | Pension_Plan	3		3
Pension Plan
Net Periodic Benefit Cost
Service cost	$ 0.2	$ 0.2	$ 0.6	$ 0.6
Interest cost	1.5	1.4	4.5	4.1
Expected return on assets	(2.0)	(2.1)	(6.0)	(6.4)
Amortization of prior service cost	0.0	0.0	0.0	0.0
Amortization of actuarial loss	0.6	0.7	1.9	2.2
Settlement cost	0.0	0.0	0.0	0.0
Net periodic benefit cost	0.3	0.2	1.0	0.5
Other Benefits
Net Periodic Benefit Cost
Service cost	0.0	0.0	0.0	0.0
Interest cost	0.1	0.1	0.3	0.3
Expected return on assets	0.0	0.0	0.0	0.0
Amortization of prior service cost	0.0	0.0	0.0	0.0
Amortization of actuarial loss	0.0	0.0	0.0	0.1
Settlement cost	0.0	0.0	0.0	0.0
Net periodic benefit cost	$ 0.1	$ 0.1	$ 0.3	$ 0.4