REVENUE: - Receivables by reporting segment (Details) $ in Millions	3 Months Ended
Mar. 31, 2025 USD ($) T	Dec. 31, 2024 USD ($)
Opening and closing balances of receivables
Trade receivables	$ 1,548.1	$ 1,189.6
Related parties receivable current:	15.0	13.5
Operating segment
Opening and closing balances of receivables
Trade receivables	1,548.1	1,189.6
Related parties receivable current:	44.7	66.2
Corporate & Eliminations
Opening and closing balances of receivables
Related parties receivable current:	$ (29.7)	(52.7)
Copper concentrates
Long Term Contracts
Long term contracts \| T	212,500
Copper cathodes
Long Term Contracts
Long term contracts \| T	48,000
Molybdenum concentrates
Long Term Contracts
Long term contracts \| T	21,250
Sulfuric acid
Long Term Contracts
Long term contracts \| T	365,000
Mexican Open-Pit \| Operating segment
Opening and closing balances of receivables
Trade receivables	$ 930.7	623.0
Related parties receivable current:	28.2	39.7
Mexican IMMSA Unit \| Operating segment
Opening and closing balances of receivables
Trade receivables	54.2	59.7
Related parties receivable current:	16.4	25.1
Peruvian Operations \| Operating segment
Opening and closing balances of receivables
Trade receivables	563.2	506.9
Related parties receivable current:	$ 0.1	$ 1.3

No definition available.

Name:	scco_LongTermContractsAbstract
Namespace Prefix:	scco_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the quantity of product agreed to be supplied over a specified time period under the long-term sales contract.

+ References

No definition available.

+ Details

Name:	scco_LongTermSupplyCommitment
Namespace Prefix:	scco_
Data Type:	dtr-types:massItemType
Balance Type:	na
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

+ Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

+ Details

Name:	us-gaap_AccountsReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=scco_CorporateAndEliminationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=scco_CopperConcentratesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=scco_CopperCathodesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=scco_MolybdenumConcentratesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=scco_SulfuricAcidMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=scco_MexicanOpenPitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=scco_MexicanIMMSAUnitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=scco_PeruvianOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: