XML 44 R31.htm IDEA: XBRL DOCUMENT
v3.8.0.1

STOCKHOLDERS' EQUITY: (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2017
STOCKHOLDERS' EQUITY: |
Schedule of activity in treasury stock | Activity in treasury stock in the nine-month period ended September 30, 2017 and 2016 is as follows (in millions):
|  | 2017 |  | 2016 |
Southern Copper common shares |  |  |  |  |
Balance as of January 1, |  | $ | 2,769.0 |  | $ | 2,697.6 |
Purchase of shares |  | — |  | 71.7 |
Used for corporate purposes |  | (0.3 | ) | (0.3 | )
Balance as of September 30, |  | 2,768.7 |  | 2,769.0 |
Parent Company (Grupo Mexico) common shares |  |  |  |  |
Balance as of January 1, |  | 218.6 |  | 211.3 |
Other activity, including dividend, interest and foreign currency transaction effect |  | 9.4 |  | 6.7 |
Balance as of September 30, |  | 228.0 |  | 218.0 |
Treasury stock balance as of September 30, |  | $ | 2,996.7 |  | $ | 2,987.0 |
Schedule of share distributions |
|  | 2017 |  | 2016 |
Southern Copper common shares |  |  |  |  |
Directors’ Stock Award Plan |  | 12,000 |  | 12,000 |
Parent Company (Grupo Mexico) common shares |  |  |  |  |
Employee stock purchase plan (shares in millions) |  | 0.3 |  | 0.9 |
Schedule of activity in Directors' Stock Award Plan |
|  | 2017 |  | 2016 |
Total SCC shares reserved for the plan |  | 600,000 |  | 600,000 |
Total shares granted at January 1, |  | (334,800 | ) | (322,800 | )
Granted in the period |  | (12,000 | ) | (12,000 | )
Total shares granted at September 30, |  | (346,800 | ) | (334,800 | )
Remaining shares reserved |  | 253.200 |  | 265,200 |
Summary of non-controlling interest activity |
|  | 2017 |  | 2016 |
Balance as of January 1, |  | $ | 38.6 |  | $ | 36.3 |
Net earnings |  | 2.6 |  | 1.9 |
Dividend paid |  | (0.6 | ) | — |
Balance as of September 30, |  | $ | 40.6 |  | $ | 38.2 |
Employee Stock Purchase 2010 Plan |
STOCKHOLDERS' EQUITY: |
Schedule of stock based compensation expense and unrecognized compensation expense | The stock based compensation expense for the nine months 2017 and 2016 and the unrecognized compensation expense under this plan were as follows (in millions):
|  | 2017 |  | 2016 |
Stock based compensation expense |  | $ | 0.4 |  | $ | 0.4 |
Unrecognized compensation expense |  | $ | 0.4 |  | $ | 1.2 |
Schedule of stock award activity |
|  | Shares |  | Unit Weighted Average Grant Date Fair Value |
Outstanding shares at January 1, 2017 |  | 1,401,096 |  | $ | 2.05 |
Granted |  | — |  | — |
Exercised |  | (7,433 | ) | 2.05 |
Forfeited |  | — |  | — |
Outstanding shares at September 30, 2017 |  | 1,393,663 |  | $ | 2.05 |
Outstanding shares at January 1, 2016 |  | 2,227,582 |  | $ | 2.05 |
Granted |  | — |  | — |
Exercised |  | (740,601 | ) | 2.05 |
Forfeited |  | — |  | — |
Outstanding shares at September 30, 2016 |  | 1,486,981 |  | $ | 2.05 |
Employee Stock Purchase 2015 Plan |
STOCKHOLDERS' EQUITY: |
Schedule of stock based compensation expense and unrecognized compensation expense | The stock based compensation expense for the nine months of 2017 and 2016 and the unrecognized compensation expense under this plan were as follows (in millions):
|  | 2017 |  | 2016 |
Stock based compensation expense |  | $ | 0.4 |  | $ | 0.4 |
Unrecognized compensation expense |  | $ | 3.4 |  | $ | 4.0 |
Schedule of stock award activity |
|  | Shares |  | Unit Weighted Average Grant Date Fair Value |
Outstanding shares at January 1, 2017 |  | 2,540,223 |  | $ | 2.63 |
Granted |  | — |  | — |
Exercised |  | (248,992 | ) | 2.63 |
Forfeited |  | — |  | — |
Outstanding shares at September 30, 2017 |  | 2,291,231 |  | $ | 2.63 |
Outstanding shares at January 1, 2016 |  | 2,656,386 |  | $ | 2.63 |
Granted |  | — |  | — |
Exercised |  | (103,852 | ) | 2.63 |
Forfeited |  | — |  | — |
Outstanding shares at September 30, 2016 |  | 2,552,534 |  | $ | 2.63 |

X
- Definition Tabular disclosure of the noncontrolling interest in consolidated subsidiaries. + References No definition available. + Details
Name: | scco_MinorityInterestTableTextBlock
Namespace Prefix: | scco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the recognized and unrecognized expense arising from equity-based compensation arrangements. + References No definition available. + Details
Name: | scco_ScheduleOfStockBasedCompensationExpenseAndUnrecognizedCompensationExpenseTableTextBlock
Namespace Prefix: | scco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition This represent Tabular disclosure of share distribution indicating the treasury stock distributed to share-based compensation during the period + References No definition available. + Details
Name: | scco_ScheduleOfTreasuryStockDistributionToShareBasedCompensationPlanTableTextBlock
Namespace Prefix: | scco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of employee stock purchase plan activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock awards granted to nonemployee directors that were outstanding at the beginning and end of the year, and the number of awards that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
Name: | us-gaap_ScheduleOfTreasuryStockByClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=scco_EmployeeStockPurchase2010PlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=scco_EmployeeStockPurchase2015PlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |