XML 184 R158.htm IDEA: XBRL DOCUMENT
v3.20.4

Employee benefits (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Employee benefits [Line Items] |  |  |  |
Key management personnel compensation |  | $ 22,858 | $ 22,598 | $ 27,907
Number of shares effected |  | 47,687 |  |
Weighted average share price |  | $ 41.93 |  |
Executive Compensation Plan [Member] |  |  |  |
Employee benefits [Line Items] |  |  |  |
Key management personnel compensation |  | $ 117 | $ 875 |
Number of shares effected |  | 177,905 | 427,652 |
Executive Compensation Plan [Member] | Two Thousand And Twenty Bonus [Member] |  |  |  |
Employee benefits [Line Items] |  |  |  |
Key management personnel compensation | $ 8,500 |  |  |
Men [Member] |  |  |  |
Employee benefits [Line Items] |  |  |  |
Actuarial assumption of retirement age |  | 65 years | 65 years | 65 years
Men [Member] | Top of range [member] |  |  |  |
Employee benefits [Line Items] |  |  |  |
Actuarial assumption of retirement age |  | 65 years |  |
Women [Member] |  |  |  |
Employee benefits [Line Items] |  |  |  |
Actuarial assumption of retirement age |  | 60 years | 60 years | 60 years
Women [Member] | Top of range [member] |  |  |  |
Employee benefits [Line Items] |  |  |  |
Actuarial assumption of retirement age |  | 60 years |  |

X
- Definition The retirement age used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ActuarialAssumptionOfRetirementAge2019
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2020-01-01 -Paragraph 17 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2020-en-r&anchor=para_17&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_KeyManagementPersonnelCompensation
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The weighted average share price. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_WeightedAverageSharePrice2019
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The number of shares effected in plan. + References No definition available. + Details
Name: | sqm_NumberOfSharesEffected
Namespace Prefix: | sqm_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_DefinedBenefitPlansAxis=sqm_ExecutiveCompensationPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=sqm_TwoThousandAndTwentyBonusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sqm_GenderAxis=sqm_MenMember
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: | sqm_GenderAxis=sqm_WomenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |