XML 24 R70.htm IDEA: XBRL DOCUMENT v2.4.0.6
COMMITTMENTS AND CONTINGENCIES: (Details 2) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 1992
Peru
Dec. 31, 1978
Peru
Dec. 31, 1971
Peru
Dec. 31, 2011
Peru
Agreements expiring during 2012
union
Dec. 31, 2011
Peru
Agreements expiring on August 31, 2012
union
Dec. 31, 2011
Peru
Agreements expiring in November 2012
union
Apr. 30, 1996
Peru
Garcia Ataucuri and Others against SCC's Peruvian Branch
person
Aug. 31, 2009
Peru
Exploraciones de Concesiones Metalicas S.A.C. ("Excomet")
Dec. 31, 2011
Peru
Garcia Ataucuri litigation
solesdeoro
Feb. 19, 2010
Mexican Operations.
Pasta de Conchos Accident
person
Litigation matter                    
Number of widows of miners who filed the complaint                   3
Number of former employees who filed the complaint             900      
Statutory participation of mine workers in pre-tax profit (as a percent) 8.00%   10.00%              
Statutory participation of mine workers in pre-tax profit paid in cash (as a percent) 100.00% 4.00% 40.00%              
Statutory participation of mine workers in pre-tax profit received as equity interest of enterprise (as a percent)     60.00%              
Percentage of pre-tax profits delivered as "labor shares"   5.50%                
Damages sought by the plaintiff                 38,763,806.80 "labor shares" (acciones laborales) (or 3,876,380,679.56 "soles de oro") to be issued under the former profit sharing law proportionally to each former employee in accordance with the time of employment of such employee with SCC's Branch in Peru, plus dividends  
Plantiffs do not represent the percent of SCC's eligilbe employees                 100.00%  
Soles de oro equivalent to today's one nuevo sol                 1,000,000,000  
Purchase price of shares paid to former stockholders               $ 2    
Number of labor unions       8 3 1