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SEGMENT AND RELATED INFORMATION: (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments | $ 1,535,200 | $ 1,384,500 | $ 1,410,200 | $ 1,623,000 | $ 1,651,100 | $ 1,552,400 | $ 1,659,900 | $ 1,805,900 | $ 5,952,943 | $ 6,669,266 | $ 6,818,721
Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 4,654,800 | 5,136,900 | 5,229,600
Molybdenum |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 390,100 | 450,500 | 544,100
Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 393,700 | 495,300 | 492,400
Zinc |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 200,300 | 195,900 | 209,800
Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 314,000 | 390,700 | 342,800
Mexican Open-pit |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,976,700 | 3,339,000 | 3,212,100
Mexican Open-pit | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,365,500 | 2,604,900 | 2,509,600
Mexican Open-pit | Molybdenum |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 242,200 | 271,300 | 310,800
Mexican Open-pit | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 242,700 | 280,500 | 248,100
Mexican Open-pit | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 126,300 | 182,300 | 143,600
Mexican IMMSA Unit |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 458,500 | 513,000 | 546,200
Mexican IMMSA Unit | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 48,400 | 62,300 | 57,200
Mexican IMMSA Unit | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 110,100 | 161,500 | 184,200
Mexican IMMSA Unit | Zinc |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 200,300 | 195,900 | 209,800
Mexican IMMSA Unit | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 99,700 | 93,300 | 95,000
Peruvian Operations |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,614,600 | 2,952,300 | 3,186,500
Peruvian Operations | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 2,289,300 | 2,532,000 | 2,720,000
Peruvian Operations | Molybdenum |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 147,900 | 179,200 | 233,300
Peruvian Operations | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 79,700 | 113,600 | 121,200
Peruvian Operations | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | 97,700 | 127,500 | 112,000
Corporate, other and eliminations |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | (96,900) | (135,000) | (126,100)
Corporate, other and eliminations | Copper |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | (48,400) | (62,300) | (57,200)
Corporate, other and eliminations | Silver |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | (38,800) | (60,300) | (61,100)
Corporate, other and eliminations | Other |  |  |  |  |  |  |  |  |  |  |
SALES VALUE PER SEGMENT: |  |  |  |  |  |  |  |  |  |  |
Net sales outside of segments |  |  |  |  |  |  |  |  | $ (9,700) | $ (12,400) | $ (7,800)

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- Definition Aggregate revenue from the sale of minerals and related products, and from rendering services such as exploration, development, mining, processing and providing mining support activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a),(d)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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