Other Income (Expense) (Details)	12 Months Ended									12 Months Ended
	Dec. 31, 2012 USD ($) Pounds		Dec. 31, 2011 USD ($)		Dec. 31, 2010 USD ($)		Dec. 31, 2012 VEB	Jun. 09, 2010 VEB	Apr. 02, 2010 VEB	Dec. 31, 2012 Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2011 Not Designated as Hedging Instrument [Member] USD ($)	Dec. 31, 2010 Not Designated as Hedging Instrument [Member] USD ($)
Other income (expense)	$ (2,900,000)	[1]	$ (31,700,000)	[1]	$ (28,100,000)	[1]
Foreign currency transaction loss	4,500,000		24,400,000
Gain on derivatives in other income (expense)	1,600,000										6,100,000
Unrealized loss on derivatives										3,000,000	6,100,000	6,000,000
Other income attributable to foreign currency transaction gains and losses					7,700,000
Pre-tax charge on foreign currency devaluation transaction related to Venezuelan Bolivar					29,800,000
Copper purchased, pounds	19,100,000
Foreign currency gains or losses	0
Exchange rate, currency translation							4.30	6.88	2.60
Foreign currency gains related to copper imports at the essential rate					16,600,000
Foreign exchange losses related to copper imports at the parallel rate					$ 10,700,000

[1] See Note 23 - Restatement of Consolidated Financial Statements