XML 38 R25.htm IDEA: XBRL DOCUMENT
v3.19.1

SHORT-TERM INVESTMENTS: (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
SHORT-TERM INVESTMENTS: |
Schedule of short-term investments | Short-term investments were as follows ($ in millions):
|  | At March 31, |  | At December 31, |
|  | 2019 |  | 2018 |
Trading securities |  | $ | 212.7 |  | $ | 213.1 |
Weighted average interest rate |  |  | 2.5 | % |  | 2.2 | %
Available-for-sale |  | $ | 0.8 |  | $ | 0.7 |
Weighted average interest rate |  |  | 0.7 | % |  | 0.7 | %
Total |  | $ | 213.5 |  | $ | 213.8 |
Summary of activity investments | The following table summarizes the activity of these investments by category (in millions):
|  | Three months ended
|  | March 31,
|  | 2019 |  | 2018
Trading: |  |  |  |  |  |
Interest earned |  | $ | 0.1 |  | $ | 0.1
Unrealized (loss) gain at the end of the period |  | $ | (0.1) |  | $ | (0.1)
Available-for-sale: |  |  |  |  |  |
Interest earned |  |  | (*) |  |  | (*)
Investment redeemed |  | $ | — |  | $ | 0.1
(*) Less than $0.1 million.

X
- Definition Tabular disclosure of activities in short-term investments during the period which includes the interest income earned during the period and proceeds from redemption of investments. + References No definition available. + Details
Name: | scco_ScheduleOfShortTermInvestmentActivitiesTableTextBlock
Namespace Prefix: | scco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of short-term investments which includes the carrying amount as of the balance sheet date and weighted average interest rate. + References No definition available. + Details
Name: | scco_ScheduleOfShortTermInvestmentsTableTextBlock
Namespace Prefix: | scco_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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