DERIVATIVE FINANCIAL INSTRUMENTS (Details 1) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Copper Commodity Forward Contracts
Derivative [Line Items]
Derivative, Notional Amount	$ 45.2	$ 35.8
Zinc Commodity Forward Contracts
Derivative [Line Items]
Derivative, Notional Amount	8.4	8.0
Lead Commodity Forward Contracts
Derivative [Line Items]
Derivative, Notional Amount	0.0	3.4
Natural Gas Commodity Forward Contracts
Derivative [Line Items]
Derivative, Notional Amount	$ 39.2	$ 54.4