DERIVATIVE FINANCIAL INSTRUMENTS (Details 1) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Copper Commodity Forward Contracts
Derivative [Line Items]
Notional amount	$ 37.3	$ 43.6	$ 45.7
Zinc Commodity Forward Contracts
Derivative [Line Items]
Notional amount	7.1	8.7	9.0
Lead Commodity Forward Contracts
Derivative [Line Items]
Notional amount	5.5	9.3	12.8
Natural Gas Commodity Forward Contracts
Derivative [Line Items]
Notional amount	$ 51.4	$ 2.0	$ 3.3