XML 181 R174.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Post-retirement benefit obligations - Reconciliation, projected net pension liability (Details) - ZAR (R) R in Millions | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Decrease/(Increase) in asset limitation | R (1,051) | R 105 | R (749)
Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 6,548 | 6,638 |
Benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 58,305 | 56,282 | 56,329
Funded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 50,390 | 49,421 |
Funded benefit obligation | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 23,075 | 22,113 |
Funded benefit obligation | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 27,315 | 27,308 |
Unfunded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 7,915 | 6,861 |
Plan assets | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (54,018) | (50,854) | (49,191)
Plan assets | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (26,392) | (24,183) |
Plan assets | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (27,626) | (26,671) |
Asset ceiling | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 2,261 | 1,210 |
Decrease/(Increase) in asset limitation | (1,051) | 105 |
South Africa | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (582) | (622) |
South Africa | Benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 47,285 | 46,508 | 44,823
South Africa | Funded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 47,285 | 46,508 |
South Africa | Funded benefit obligation | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 19,970 | 19,200 |
South Africa | Funded benefit obligation | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 27,315 | 27,308 |
South Africa | Plan assets | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (50,128) | (48,340) | (46,752)
South Africa | Plan assets | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (22,502) | (21,669) |
South Africa | Plan assets | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (27,626) | (26,671) |
South Africa | Asset ceiling | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 2,261 | 1,210 |
Foreign Countries | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 7,130 | 7,260 |
Foreign Countries | Benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 11,020 | 9,774 | 11,506
Foreign Countries | Funded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 3,105 | 2,913 |
Foreign Countries | Funded benefit obligation | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 3,105 | 2,913 |
Foreign Countries | Unfunded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | 7,915 | 6,861 |
Foreign Countries | Plan assets | Pension |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | (3,890) | (2,514) | R (2,439)
Foreign Countries | Plan assets | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Net liability (asset) recognized | R (3,890) | R (2,514) |

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the gain (loss) on changes in the effect of limiting a net defined benefit asset to the asset ceiling, excluding amounts included in interest income or expense. [Refer: Interest income; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 141 -Subparagraph c -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_141_c_iv&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_140_a&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_LiabilityAssetOfDefinedBenefitPlans
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=ifrs-full_PresentValueOfDefinedBenefitObligationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=ssl_FundedBenefitObligationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=ssl_UnfundedBenefitObligationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=ifrs-full_PlanAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=ifrs-full_EffectOfAssetCeilingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=ifrs-full_ForeignCountriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |