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: