| r0.c0 | RuleNode_228/Group [member] | | | | ifrs-smes:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_228/Company [member] | | | | ifrs-smes:SeparateMember | N/A |
| r1.c0 | Trade and other payables [abstract]/Group [member] | ifrs-smes:TradeAndOtherPayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r1.c1 | Trade and other payables [abstract]/Company [member] | ifrs-smes:TradeAndOtherPayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r2.c0 | Trade and other payables [abstract]/Group [member] | ssmt-mpers:TradePayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r2.c1 | Trade and other payables [abstract]/Company [member] | ssmt-mpers:TradePayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r3.c0 | Trade payables due to contract customers/Group [member] | ssmt-mpers:TradePayablesDueToContractCustomers | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Trade payables due to contract customers/Company [member] | ssmt-mpers:TradePayablesDueToContractCustomers | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r4.c0 | Trade payables due to holding company/Group [member] | ssmt-mpers:TradePayablesDueToHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Trade payables due to holding company/Company [member] | ssmt-mpers:TradePayablesDueToHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r5.c0 | Trade payables due to subsidiaries/Group [member] | ssmt-mpers:TradePayablesDueToSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Trade payables due to subsidiaries/Company [member] | ssmt-mpers:TradePayablesDueToSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r6.c0 | Trade payables due to associates/Group [member] | ssmt-mpers:TradePayablesDueToAssociates | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Trade payables due to associates/Company [member] | ssmt-mpers:TradePayablesDueToAssociates | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r7.c0 | Trade payables due to joint ventures/Group [member] | ssmt-mpers:TradePayablesDueToJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Trade payables due to joint ventures/Company [member] | ssmt-mpers:TradePayablesDueToJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r8.c0 | Trade payables due to other related parties/Group [member] | ssmt-mpers:TradePayablesDueToOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Trade payables due to other related parties/Company [member] | ssmt-mpers:TradePayablesDueToOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r9.c0 | Other trade payables/Group [member] | ssmt-mpers:OtherTradePayables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Other trade payables/Company [member] | ssmt-mpers:OtherTradePayables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r10.c0 | Total trade payables/Group [member] | ifrs-smes:TradeAndOtherPayablesToTradeSuppliers | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Total trade payables/Company [member] | ifrs-smes:TradeAndOtherPayablesToTradeSuppliers | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r11.c0 | Other payables [abstract]/Group [member] | ssmt-mpers:OtherPayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r11.c1 | Other payables [abstract]/Company [member] | ssmt-mpers:OtherPayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r12.c0 | Other payables due to related parties [abstract]/Group [member] | ssmt-mpers:OtherPayablesDueToRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r12.c1 | Other payables due to related parties [abstract]/Company [member] | ssmt-mpers:OtherPayablesDueToRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r13.c0 | Other payables due to holding company/Group [member] | ssmt-mpers:OtherPayablesDueToHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Other payables due to holding company/Company [member] | ssmt-mpers:OtherPayablesDueToHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r14.c0 | Other payables due to subsidiaries/Group [member] | ssmt-mpers:OtherPayablesDueToSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Other payables due to subsidiaries/Company [member] | ssmt-mpers:OtherPayablesDueToSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r15.c0 | Other payables due to associates/Group [member] | ssmt-mpers:OtherPayablesDueToAssociates | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Other payables due to associates/Company [member] | ssmt-mpers:OtherPayablesDueToAssociates | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r16.c0 | Other payables due to joint ventures/Group [member] | ssmt-mpers:OtherPayablesDueToJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Other payables due to joint ventures/Company [member] | ssmt-mpers:OtherPayablesDueToJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r17.c0 | Other payables due to other related parties/Group [member] | ssmt-mpers:OtherPayablesDueToOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r17.c1 | Other payables due to other related parties/Company [member] | ssmt-mpers:OtherPayablesDueToOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r18.c0 | Total other payables due to related parties/Group [member] | ssmt-mpers:OtherPayablesDueToRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Total other payables due to related parties/Company [member] | ssmt-mpers:OtherPayablesDueToRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r19.c0 | Non-trade payables [abstract]/Group [member] | ssmt-mpers:OtherNontradePayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r19.c1 | Non-trade payables [abstract]/Company [member] | ssmt-mpers:OtherNontradePayablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r20.c0 | Deferred income/Group [member] | ssmt-mpers:OtherNontradeDeferredIncome | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r20.c1 | Deferred income/Company [member] | ssmt-mpers:OtherNontradeDeferredIncome | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r21.c0 | Accruals/Group [member] | ssmt-mpers:OtherNontradeAccruals | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r21.c1 | Accruals/Company [member] | ssmt-mpers:OtherNontradeAccruals | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r22.c0 | Retention payables/Group [member] | ssmt-mpers:OtherNontradeRetentionPayables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r22.c1 | Retention payables/Company [member] | ssmt-mpers:OtherNontradeRetentionPayables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r23.c0 | Other non-trade payables/Group [member] | ssmt-mpers:OtherMiscellaneousNontradePayables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r23.c1 | Other non-trade payables/Company [member] | ssmt-mpers:OtherMiscellaneousNontradePayables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r24.c0 | Total non-trade payables/Group [member] | ssmt-mpers:OtherNontradePayables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r24.c1 | Total non-trade payables/Company [member] | ssmt-mpers:OtherNontradePayables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r25.c0 | Total other payables/Group [member] | ssmt-mpers:OtherPayables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r25.c1 | Total other payables/Company [member] | ssmt-mpers:OtherPayables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r26.c0 | Total trade and other payables/Group [member] | ifrs-smes:TradeAndOtherPayables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r26.c1 | Total trade and other payables/Company [member] | ifrs-smes:TradeAndOtherPayables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |