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 2021-01-01
-Paragraph 144
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_144&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- Definition

The expected rate of increases in pension that is 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_ActuarialAssumptionOfExpectedRatesOfPensionIncreases
Namespace Prefix:	ifrs-full_
Data Type:	num: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:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Medical cost trend rate used as 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_ActuarialAssumptionOfMedicalCostTrendRates
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfDefinedBenefitPlansLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average duration of a defined benefit obligation. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2021-01-01
-Paragraph 147
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_147_c&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_WeightedAverageDurationOfDefinedBenefitObligation2019
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=ssl_DefinedBenefitPensionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=ssl_DefinedBenefitHealthCarePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

Post-retirement benefit obligations - Actuarial Assumptions (Details)	Jun. 30, 2022	Apr. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Apr. 30, 2021	Mar. 31, 2021
South Africa
Post-retirement benefit obligations
Healthcare cost inflation			7.50%			7.50%
Pension increase assumption			5.10%			5.20%
Average salary increases			5.50%			5.50%
South Africa \| Pension
Post-retirement benefit obligations
Discount rate			12.40%			11.10%
Weighted average duration of the obligation			12 years			12 years
South Africa \| Healthcare
Post-retirement benefit obligations
Discount rate			12.40%			11.60%
Weighted average duration of the obligation			14 years			13 years
United States
Post-retirement benefit obligations
Average salary increases	4.20%			4.20%
United States \| Pension
Post-retirement benefit obligations
Discount rate	4.20%			2.00%
Weighted average duration of the obligation	4 years			7 years
United States \| Healthcare
Post-retirement benefit obligations
Discount rate	4.30%			2.70%
Weighted average duration of the obligation	10 years			12 years
Europe
Post-retirement benefit obligations
Pension increase assumption		2.20%			1.80%
Average salary increases		3.20%			2.80%
Europe \| Pension
Post-retirement benefit obligations
Discount rate		2.50%			1.20%
Weighted average duration of the obligation		16 years			18 years