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]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 144
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_144&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ActuarialAssumptionOfDiscountRates
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

Name:	ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

Name:	ifrs-full_ActuarialAssumptionOfRetirementAge2019
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The expected voluntary retirement rate.

+ References

No definition available.

+ Details

Name:	sqm_ActuarialAssumptionVoluntaryRetirementRate
Namespace Prefix:	sqm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

- References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Details

Name:	sqm_GenderAxis=sqm_MenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	sqm_GenderAxis=sqm_WomenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Employee benefits - Actuarial Assumptions (Details)	12 Months Ended
Employee benefits - Actuarial Assumptions (Details)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee benefits [Line Items]
Actual annual interest rate	5.12%	5.67%		3.65%
Voluntary retirement rate:
Salary increase	3.00%	3.00%	3.00%
Retirement age:
Mortality rate	RV - 2014	RV - 2014	RV - 2014
Men
Voluntary retirement rate:
Actuarial assumption voluntary retirement rate	6.49%	6.49%	6.49%
Retirement age:
Actuarial assumption of retirement age	65 years	65 years	65 years
Women
Voluntary retirement rate:
Actuarial assumption voluntary retirement rate	6.49%	6.49%	6.49%
Retirement age:
Actuarial assumption of retirement age	60 years	60 years	60 years
Maximum \| Men
Retirement age:
Actuarial assumption of retirement age		65 years
Maximum \| Women
Retirement age:
Actuarial assumption of retirement age		60 years