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SUBSEQUENT EVENTS: (Details)			6 Months Ended
	Jul. 09, 2019 m³	Jul. 08, 2019 $ / shares	Jun. 30, 2019 item
SUBSEQUENT EVENTS:
Number of times of renewal | item			4
Number of years of each renewal			2 years
Subsequent Events
SUBSEQUENT EVENTS:
Quarterly dividend authorized (in dollars per share) | $ / shares		$ 0.40
Volume of sulfuric acid discharged in the incident at Guaymas	3
Water volume at Guaymas bay	340,000,000

X

- Definition

Number of times of renewal.

+ References

No definition available.

+ Details

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X

- Definition

Number of years of each renewal.

+ References

No definition available.

+ Details

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X

- Definition

Volume of sulfuric acid discharged in the incident.

+ References

No definition available.

+ Details

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Namespace Prefix:	scco_
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Balance Type:	na
Period Type:	duration

X

- Definition

Water volume at Guaymas bay.

+ References

No definition available.

+ Details

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Namespace Prefix:	scco_
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X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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