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SCC SHAREHOLDER DERIVATIVE LAWSUIT: (Details) (USD $)		2 Months Ended	1 Months Ended
	Sep. 30, 2012	Jan. 31, 2005 Minera Mexico, S.A. de C.V. (the "Transaction") lawsuit	Oct. 31, 2012 Americas Mining Corporation ("AMC") merger transaction	Oct. 31, 2011 Americas Mining Corporation ("AMC") merger transaction	Sep. 30, 2012 Americas Mining Corporation ("AMC") merger transaction
Litigation matter
Number of purported class action derivative lawsuits filed		3
Number of purported class action derivative lawsuits which are consolidated		3
Number of consolidated purported class action derivative lawsuits		1
Damages awarded by court				$ 1,347,000,000
Pre-adjustment interest				684,600,000
Attorney's fees and expenses awarded, option 1				304,700,000
Attorney's fees and expenses awarded, option 2 (as a percent)				15.00%
Legal fees related to AMC damage award			316,200,000
AMC damage award	2,108,221,000				(2,108,200,000)
Legal fees related to AMC damage award	$ 316,233,000				$ 316,200,000

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