| r0.c0 | RuleNode_204/Group [member] | | | | ifrs-smes:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_204/Company [member] | | | | ifrs-smes:SeparateMember | N/A |
| r1.c0 | Employee benefits [abstract]/Group [member] | ssmt-mpers:EmployeeBenefitLiabilitiesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r1.c1 | Employee benefits [abstract]/Company [member] | ssmt-mpers:EmployeeBenefitLiabilitiesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r2.c0 | Cash-settled share-based payment liability/Group [member] | ssmt-mpers:CashSettledShareBasedPaymentLiability | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r2.c1 | Cash-settled share-based payment liability/Company [member] | ssmt-mpers:CashSettledShareBasedPaymentLiability | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r3.c0 | Employment termination benefits/Group [member] | ssmt-mpers:EmploymentTerminationBenefits | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Employment termination benefits/Company [member] | ssmt-mpers:EmploymentTerminationBenefits | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r4.c0 | Provision for unconsumed leave/Group [member] | ssmt-mpers:ProvisionForUnconsumedLeave | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Provision for unconsumed leave/Company [member] | ssmt-mpers:ProvisionForUnconsumedLeave | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r5.c0 | Defined contribution plan/Group [member] | ssmt-mpers:DefinedContributionPlan | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Defined contribution plan/Company [member] | ssmt-mpers:DefinedContributionPlan | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r6.c0 | Defined benefit plan/Group [member] | ssmt-mpers:DefinedBenefitPlan | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Defined benefit plan/Company [member] | ssmt-mpers:DefinedBenefitPlan | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r7.c0 | Other employee benefit/Group [member] | ssmt-mpers:OtherEmployeeBenefitLiabilities | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Other employee benefit/Company [member] | ssmt-mpers:OtherEmployeeBenefitLiabilities | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r8.c0 | Total employee benefits/Group [member] | ifrs-smes:ProvisionsForEmployeeBenefits | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Total employee benefits/Company [member] | ifrs-smes:ProvisionsForEmployeeBenefits | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |