XML 202 R200.htm IDEA: XBRL DOCUMENT v3.20.1

Income tax and deferred taxes (Details 2)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income tax and deferred taxes [Line Items]
Applicable tax rate	27.00%	27.00%	255.00%
Spain [member]
Income tax and deferred taxes [Line Items]
Applicable tax rate	25.00%	25.00%
Belgium [member]
Income tax and deferred taxes [Line Items]
Applicable tax rate	29.58%	29.58%
Mexico [member]
Income tax and deferred taxes [Line Items]
Applicable tax rate	30.00%	30.00%
United States [member] | Top of range [member]
Income tax and deferred taxes [Line Items]
Applicable tax rate	21.00%	21.00%
United States [member] | Bottom of range [member]
Income tax and deferred taxes [Line Items]
Applicable tax rate	6.00%	6.00%
South Africa [member]
Income tax and deferred taxes [Line Items]
Applicable tax rate	28.00%	28.00%

X

- Definition

The applicable income tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ApplicableTaxRate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The Income tax and deferred taxes

+ References

No definition available.

+ Details

Name:	sqm_IncomeTaxAndDeferredTaxesLineItems
Namespace Prefix:	sqm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=sqm_SpanishCountryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=sqm_BelgiumCountriesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=sqm_MexicoCountryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=sqm_UnitedStatesOfAmericaCountryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=sqm_SouthAfricaCountryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: