XML 182 R156.htm IDEA: XBRL DOCUMENT
v3.20.4

Employee benefits (Details 6) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Employee benefits [Line Items] |  |  |
Actuarial assumption of discount rates | 3.65% | 3.68% | 4.64%
Voluntary retirement rate [Abstract] |  |  |
Actuarial assumption of expected rates of salary increases | 3.00% | 3.00% | 3.00%
Retirement age [Abstract] |  |  |
Mortality rate | RV - 2014 | RV - 2014 | RV - 2014
Men [Member] |  |  |
Voluntary retirement rate [Abstract] |  |  |
Actuarial assumption voluntary retirement rate | 6.49% | 6.49% | 6.49%
Retirement age [Abstract] |  |  |
Actuarial assumption of retirement age | 65 years | 65 years | 65 years
Women [Member] |  |  |
Voluntary retirement rate [Abstract] |  |  |
Actuarial assumption voluntary retirement rate | 6.49% | 6.49% | 6.49%
Retirement age [Abstract] |  |  |
Actuarial assumption of retirement age | 60 years | 60 years | 60 years

X
- Definition The discount rate used as the 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_ActuarialAssumptionOfDiscountRates
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; 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_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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 expected voluntary retirement rate. + References No definition available. + Details
Name: | sqm_ActuarialAssumptionVoluntaryRetirementRate
Namespace Prefix: | sqm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The description of mortality rate used as a significant actuarial assumption to determine the present value of a defined benefit obligation. + References No definition available. + Details
Name: | sqm_DescriptionOfActurialAssumtionOfMortalityRate
Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
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
- References No definition available. + Details
Name: | sqm_RetirementAgeAbstract
Namespace Prefix: | sqm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | sqm_GenderAxis=sqm_MenMember
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: |