DERIVATIVE FINANCIAL INSTRUMENTS (Details 1) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Copper Commodity Forward Contracts [Member]
Derivative [Line Items]
Notional amount	$ 61.2	$ 53.6	$ 68.3
Zinc Commodity Forward Contracts [Member]
Derivative [Line Items]
Notional amount	6.6	6.3	6.7
Lead Commodity Forward Contracts [Member]
Derivative [Line Items]
Notional amount	34.6	48.3	34.3
Natural Gas Commodity Forward Contracts [Member]
Derivative [Line Items]
Notional amount	$ 7.8	$ 6.0	$ 10.8