| r0.c0 | RuleNode_102/Group [member] | | | | ifrs-smes:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_102/Company [member] | | | | ifrs-smes:SeparateMember | N/A |
| r1.c0 | Other expenses [abstract]/Group [member] | ssmt-mpers:OtherExpensesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r1.c1 | Other expenses [abstract]/Company [member] | ssmt-mpers:OtherExpensesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r2.c0 | Auditor's remuneration [abstract]/Group [member] | ssmt-mpers:AuditorsRemunerationAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r2.c1 | Auditor's remuneration [abstract]/Company [member] | ssmt-mpers:AuditorsRemunerationAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r3.c0 | Auditor's remuneration for audit services/Group [member] | ssmt-mpers:AuditorsRemunerationForAuditServices | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Auditor's remuneration for audit services/Company [member] | ssmt-mpers:AuditorsRemunerationForAuditServices | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r4.c0 | Auditor's remuneration for other services/Group [member] | ssmt-mpers:AuditorsRemunerationForOtherServices | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Auditor's remuneration for other services/Company [member] | ssmt-mpers:AuditorsRemunerationForOtherServices | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r5.c0 | Total auditor's remuneration/Group [member] | ssmt-mpers:AuditorsRemuneration | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Total auditor's remuneration/Company [member] | ssmt-mpers:AuditorsRemuneration | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r6.c0 | Amortisation expense/Group [member] | ssmt-mpers:AmortisationExpense | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Amortisation expense/Company [member] | ssmt-mpers:AmortisationExpense | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r7.c0 | Depreciation of property, plant and equipment/Group [member] | ifrs-smes:DepreciationPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Depreciation of property, plant and equipment/Company [member] | ifrs-smes:DepreciationPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r8.c0 | Natural disaster related expenses/Group [member] | ssmt-mpers:NaturalDisasterRelatedExpenses | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Natural disaster related expenses/Company [member] | ssmt-mpers:NaturalDisasterRelatedExpenses | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r9.c0 | Loss on disposal of subsidiaries, associates and joint ventures [abstract]/Group [member] | ssmt-mpers:LossOnDisposalOfSubsidiariesAssociatesAndJointVenturesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r9.c1 | Loss on disposal of subsidiaries, associates and joint ventures [abstract]/Company [member] | ssmt-mpers:LossOnDisposalOfSubsidiariesAssociatesAndJointVenturesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r10.c0 | Loss on disposal of subsidiaries/Group [member] | ssmt-mpers:LossOnDisposalOfSubsidiaries | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Loss on disposal of subsidiaries/Company [member] | ssmt-mpers:LossOnDisposalOfSubsidiaries | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r11.c0 | Loss on disposal of associates/Group [member] | ssmt-mpers:LossOnDisposalOfAssociates | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Loss on disposal of associates/Company [member] | ssmt-mpers:LossOnDisposalOfAssociates | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r12.c0 | Loss on disposal of joint ventures/Group [member] | ssmt-mpers:LossOnDisposalOfJointVentures | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Loss on disposal of joint ventures/Company [member] | ssmt-mpers:LossOnDisposalOfJointVentures | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r13.c0 | Total loss on disposal of subsidiaries, associates and joint ventures/Group [member] | ssmt-mpers:LossOnDisposalOfSubsidiariesAssociatesAndJointVentures | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Total loss on disposal of subsidiaries, associates and joint ventures/Company [member] | ssmt-mpers:LossOnDisposalOfSubsidiariesAssociatesAndJointVentures | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r14.c0 | Loss on disposal from other investments/Group [member] | ssmt-mpers:LossesOnDisposalsOfInvestments | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Loss on disposal from other investments/Company [member] | ssmt-mpers:LossesOnDisposalsOfInvestments | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r15.c0 | Loss on disposal of property, plant and equipment/Group [member] | ssmt-mpers:LossesOnDisposalsOfPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Loss on disposal of property, plant and equipment/Company [member] | ssmt-mpers:LossesOnDisposalsOfPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r16.c0 | Loss on disposal of other non-current assets/Group [member] | ssmt-mpers:LossesOnDisposalsOfNoncurrentAssets | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Loss on disposal of other non-current assets/Company [member] | ssmt-mpers:LossesOnDisposalsOfNoncurrentAssets | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r17.c0 | Loss on revaluation/Group [member] | ssmt-mpers:LossOnRevaluationOfFinancialInstruments | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r17.c1 | Loss on revaluation/Company [member] | ssmt-mpers:LossOnRevaluationOfFinancialInstruments | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r18.c0 | Provision for liabilities and charges/Group [member] | ssmt-mpers:ProvisionForLiabilitiesAndCharges | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Provision for liabilities and charges/Company [member] | ssmt-mpers:ProvisionForLiabilitiesAndCharges | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r19.c0 | Provision of warranties and guarantees/Group [member] | ssmt-mpers:ProvisionForGuaranteeAndWarranties | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r19.c1 | Provision of warranties and guarantees/Company [member] | ssmt-mpers:ProvisionForGuaranteeAndWarranties | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r20.c0 | Rental expenses/Group [member] | ssmt-mpers:RentalExpense | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r20.c1 | Rental expenses/Company [member] | ssmt-mpers:RentalExpense | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r21.c0 | Royalty expenses/Group [member] | ssmt-mpers:RoyaltyExpense | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r21.c1 | Royalty expenses/Company [member] | ssmt-mpers:RoyaltyExpense | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r22.c0 | Directors' remuneration [abstract]/Group [member] | ssmt-mpers:DirectorsRemunerationAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r22.c1 | Directors' remuneration [abstract]/Company [member] | ssmt-mpers:DirectorsRemunerationAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r23.c0 | Salaries and other emoluments/Group [member] | ssmt-mpers:WagesAndSalariesToDirectors | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r23.c1 | Salaries and other emoluments/Company [member] | ssmt-mpers:WagesAndSalariesToDirectors | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r24.c0 | Bonus/Group [member] | ssmt-mpers:BonusToDirectors | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r24.c1 | Bonus/Company [member] | ssmt-mpers:BonusToDirectors | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r25.c0 | Share option expenses/Group [member] | ssmt-mpers:KeyManagementPersonnelCompensationSharebasedPayment | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r25.c1 | Share option expenses/Company [member] | ssmt-mpers:KeyManagementPersonnelCompensationSharebasedPayment | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r26.c0 | Benefits-in-kind/Group [member] | ssmt-mpers:BenefitsInKindExpenses | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r26.c1 | Benefits-in-kind/Company [member] | ssmt-mpers:BenefitsInKindExpenses | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r27.c0 | Fees/Group [member] | ssmt-mpers:DirectorsFees | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r27.c1 | Fees/Company [member] | ssmt-mpers:DirectorsFees | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r28.c0 | Performance incentives/Group [member] | ssmt-mpers:PerformanceIncentives | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r28.c1 | Performance incentives/Company [member] | ssmt-mpers:PerformanceIncentives | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r29.c0 | Defined contribution plans/Group [member] | ssmt-mpers:RetirementBenefitsDefinedContributionPlans | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r29.c1 | Defined contribution plans/Company [member] | ssmt-mpers:RetirementBenefitsDefinedContributionPlans | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r30.c0 | Defined benefit plans/Group [member] | ssmt-mpers:RetirementBenefitsDefinedBenefitPlans | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r30.c1 | Defined benefit plans/Company [member] | ssmt-mpers:RetirementBenefitsDefinedBenefitPlans | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r31.c0 | Other emoluments/Group [member] | ssmt-mpers:OtherDirectorsRemuneration | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r31.c1 | Other emoluments/Company [member] | ssmt-mpers:OtherDirectorsRemuneration | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r32.c0 | Total directors remuneration/Group [member] | ssmt-mpers:DirectorsRemuneration | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r32.c1 | Total directors remuneration/Company [member] | ssmt-mpers:DirectorsRemuneration | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r33.c0 | Other miscellaneous expenses/Group [member] | ssmt-mpers:OtherMiscellaneousExpenses | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r33.c1 | Other miscellaneous expenses/Company [member] | ssmt-mpers:OtherMiscellaneousExpenses | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |
| r34.c0 | Total other expenses/Group [member] | ifrs-smes:OtherExpenseByNature | xbrli:monetaryItemType | duration | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r34.c1 | Total other expenses/Company [member] | ifrs-smes:OtherExpenseByNature | xbrli:monetaryItemType | duration | ifrs-smes:SeparateMember | iso4217:MYR |