DERIVATIVE AND HEDGING ACTIVITIES (Details) (Fair Value Hedging [Member], Derivative contract - commodity hedge [Member], Nickel Sales [Member], Maximum [Member])	Dec. 31, 2012
Fair Value Hedging [Member] | Derivative contract - commodity hedge [Member] | Nickel Sales [Member] | Maximum [Member]
Derivative [Line Items]
Percent of hedged in commodity	50.00%