Derivative Instruments and Hedging Activities (Details) (EUR €)	Dec. 31, 2014 lb	Dec. 31, 2013 lb
Commodity Contract [Member] | Nickel [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Derivatives	259,300	763,300
Commodity Contract [Member] | Natural Gas [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Derivatives	33,992,500	3,240,000
Commodity Contract [Member] | Zinc [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Derivatives	61,800,000	12,000,000
Commodity Contract [Member] | Iron Ore [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Derivatives	2,335,000	190,735
Commodity Contract [Member] | Electricity [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Derivatives	1,182,800	0
Commodity Contract [Member] | Hot Roll Carbon Steel Coils [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Derivatives	15,000	74,147
Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	23,675,000	17,730,000