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Intangible assets and goodwill - Movements in Identifiable Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Changes in goodwill [abstract]
Goodwill, beginning balance	$ 958	$ 967
Goodwill, ending balance	948	958
Carrying amount
Changes in goodwill [abstract]
Goodwill, beginning balance	958	967
Additional recognition	0	0
Impairment losses recognized in income for the year	(10)	(9)
Total increase (decrease)	(10)	(9)
Goodwill, ending balance	948	958
Carrying amount | SQM Iberian S.A.
Changes in goodwill [abstract]
Goodwill, beginning balance	148	148
Additional recognition	0	0
Impairment losses recognized in income for the year	(10)	0
Total increase (decrease)	(10)	0
Goodwill, ending balance	138	148
Carrying amount | SQM Investment Corporation N.V.
Changes in goodwill [abstract]
Goodwill, beginning balance	86
Additional recognition	0
Impairment losses recognized in income for the year	0
Total increase (decrease)	0
Goodwill, ending balance	86	86
Carrying amount | Soquimich European Holding B.V.
Changes in goodwill [abstract]
Goodwill, beginning balance	0	9
Additional recognition		0
Impairment losses recognized in income for the year		(9)
Total increase (decrease)		(9)
Goodwill, ending balance		0
Carrying amount | SQM Potasio SpA
Changes in goodwill [abstract]
Goodwill, beginning balance	724
Additional recognition	0
Impairment losses recognized in income for the year	0
Total increase (decrease)	0
Goodwill, ending balance	724	724
Carrying amount | SQM Investment Corporation
Changes in goodwill [abstract]
Goodwill, beginning balance	86	86
Additional recognition		0
Impairment losses recognized in income for the year		0
Total increase (decrease)		0
Goodwill, ending balance		86
Carrying amount | SQM Potasio S.A.
Changes in goodwill [abstract]
Goodwill, beginning balance	$ 724	724
Additional recognition		0
Impairment losses recognized in income for the year		0
Total increase (decrease)		0
Goodwill, ending balance		$ 724

X

- Definition

The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2024-01-01
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- Definition

The increase (decrease) in goodwill. [Refer: Goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill]

+ References

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