| r0.c0 | RuleNode_172/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_172/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Other reserves [abstract]/Group [member] | ifrs-full:OtherReservesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Other reserves [abstract]/Company [member] | ifrs-full:OtherReservesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Non-distributable [abstract]/Group [member] | ssmt-mfrs:NondistributableReservesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r2.c1 | Non-distributable [abstract]/Company [member] | ssmt-mfrs:NondistributableReservesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r3.c0 | Capital reserve/Group [member] | ifrs-full:CapitalReserve | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Capital reserve/Company [member] | ifrs-full:CapitalReserve | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r4.c0 | Foreign currency translation reserve/Group [member] | ifrs-full:ReserveOfExchangeDifferencesOnTranslation | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Foreign currency translation reserve/Company [member] | ifrs-full:ReserveOfExchangeDifferencesOnTranslation | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r5.c0 | Revaluation reserve/Group [member] | ifrs-full:RevaluationSurplus | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Revaluation reserve/Company [member] | ifrs-full:RevaluationSurplus | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Other non-distributable reserves/Group [member] | ssmt-mfrs:OtherNondistributableReserves | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Other non-distributable reserves/Company [member] | ssmt-mfrs:OtherNondistributableReserves | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Total non-distributable other reserves/Group [member] | ssmt-mfrs:NondistributableReserves | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Total non-distributable other reserves/Company [member] | ssmt-mfrs:NondistributableReserves | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r8.c0 | Distributable [abstract]/Group [member] | ssmt-mfrs:DistributableReserveAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r8.c1 | Distributable [abstract]/Company [member] | ssmt-mfrs:DistributableReserveAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r9.c0 | Other distributable reserves/Group [member] | ssmt-mfrs:OtherDistributableReserve | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Other distributable reserves/Company [member] | ssmt-mfrs:OtherDistributableReserve | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r10.c0 | Total distributable other reserves/Group [member] | ssmt-mfrs:DistributableReseves | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Total distributable other reserves/Company [member] | ssmt-mfrs:DistributableReseves | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Total other reserves/Group [member] | ifrs-full:OtherReserves | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Total other reserves/Company [member] | ifrs-full:OtherReserves | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |