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Related parties - Key management remuneration share-based payments (Details) - ZAR (R) R in Millions | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022
Executive directors |  |
Disclosure of transactions between related parties |  |
Share-based payment | R 29 | R 14
Prescribed Officers |  |
Disclosure of transactions between related parties |  |
Share-based payment | R 45 | R 32

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

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- Definition The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2022-03-24 -Paragraph 17 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2022-en-r&anchor=para_17_e&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ssl_ExecutiveDirectorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ssl_PrescribedOfficersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |