XML 61 R48.htm IDEA: XBRL DOCUMENT
v3.8.0.1

STOCKHOLDERS' EQUITY: - Treasury Stock (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended | 60 Months Ended | 123 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2018
Activity in treasury stock |  |  |  |  |  |  |  |
Balance at the beginning of the period | $ 3,001.1 |  |  |  |  |  |  |
Purchase of shares |  |  | $ 71.7 | $ 1,004.4 | $ 682.8 | $ 281.4 | $ 878.1 | $ 2,918.4
Balance at the end of the period | $ 3,007.6 | $ 2,989.7 |  |  |  |  |  | $ 3,007.6
Southern copper common shares |  |  |  |  |  |  |  |
Activity in treasury stock |  |  |  |  |  |  |  |
Treasury stock balance at the end of the period (in shares) | 111,567,617 | 111,579,617 |  |  |  |  |  | 111,567,617
Parent Company (Grupo Mexico) common shares |  |  |  |  |  |  |  |
Activity in treasury stock |  |  |  |  |  |  |  |
Treasury stock balance at the end of the period (in shares) | 104,479,600 | 112,457,204 |  |  |  |  |  | 104,479,600
TREASURY STOCK: | Southern copper common shares |  |  |  |  |  |  |  |
Activity in treasury stock |  |  |  |  |  |  |  |
Balance at the beginning of the period | $ 2,768.7 | $ 2,769.0 |  |  |  |  |  |
Balance at the end of the period | 2,768.7 | 2,769.0 | 2,769.0 |  |  |  |  | $ 2,768.7
TREASURY STOCK: | Parent Company (Grupo Mexico) common shares |  |  |  |  |  |  |  |
Activity in treasury stock |  |  |  |  |  |  |  |
Balance at the beginning of the period | 232.4 | 218.6 |  |  |  |  |  |
Other activity, including dividend, interest and foreign currency transaction effect | 6.5 | 2.1 |  |  |  |  |  |
Balance at the end of the period | $ 238.9 | $ 220.7 | $ 218.6 |  |  |  |  | $ 238.9

X
- Definition Represents the value of other activity impacting treasury stock including dividend, interest and currency translation effect. + References No definition available. + Details
Name: | scco_TreasuryStockValueOtherActivityIncludingDividendInterestAndCurrencyTranslationEffect
Namespace Prefix: | scco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | scco_TreasuryStockValueRollForward
Namespace Prefix: | scco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 + Details
Name: | us-gaap_TreasuryStockShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: 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 + Details
Name: | us-gaap_TreasuryStockValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=scco_HoldingCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_TreasuryStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |