STOCKHOLDERS' EQUITY: (Details) (USD $)	1 Months Ended									3 Months Ended			12 Months Ended					65 Months Ended	0 Months Ended	1 Months Ended						12 Months Ended
	Dec. 31, 2013	Nov. 30, 2013	Oct. 31, 2013	Sep. 30, 2013	Aug. 31, 2013	Jul. 31, 2013	Jun. 30, 2013	May 31, 2013	Apr. 30, 2013	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2013	Oct. 09, 2012 Americas Mining Corporation ("AMC") merger transaction	Oct. 31, 2012 Americas Mining Corporation ("AMC") merger transaction	Dec. 31, 2012 Americas Mining Corporation ("AMC") merger transaction	Dec. 31, 2013 Southern Copper common shares	Dec. 31, 2012 Southern Copper common shares	Dec. 31, 2013 Parent Company (Grupo Mexico) common shares	Dec. 31, 2012 Parent Company (Grupo Mexico) common shares	Dec. 31, 2013 TREASURY STOCK: Southern Copper common shares	Dec. 31, 2012 TREASURY STOCK: Southern Copper common shares	Dec. 31, 2013 TREASURY STOCK: Parent Company (Grupo Mexico) common shares	Dec. 31, 2012 TREASURY STOCK: Parent Company (Grupo Mexico) common shares	Dec. 31, 2012 ADDITIONAL PAID-IN CAPITAL:
Delaware Court Decision Related to SCC Shareholder Derivative Lawsuit:
SCC shareholder derivative lawsuit payment received																			$ 2,108,200,000											$ (2,108,221,000)
Legal fees related to SCC shareholders derivative lawsuit													316,233,000							316,200,000
Accrual - Legal fees related to SCC shareholders derivative lawsuit																					316,200,000
Activity in treasury stock
Balance at the beginning of the period																										729,800,000	734,100,000	189,000,000	163,700,000
Purchase of shares	49,700,000	64,800,000	42,900,000	5,600,000	17,100,000	35,900,000	39,200,000	26,100,000	100,000	157,400,000	58,600,000	65,400,000	147,300,000	273,700,000	500,000	71,900,000	384,700,000	1,159,500,000								281,400,000	147,300,000
Stock dividend distribution																											(151,400,000)
Used for corporate purposes																										(200,000)	(200,000)
Other activity, including dividend, interest and currency translation effect																												16,600,000	25,300,000
Balance at the end of the period	$ 1,216,599,000									$ 1,216,599,000			$ 918,791,000					$ 1,216,599,000								$ 1,011,000,000	$ 729,800,000	$ 205,600,000	$ 189,000,000
Treasury stock balance at the end of the period (in shares)																						49,278,536	39,045,536	75,262,919	80,674,702