| r0.c0 | RuleNode_93/Group [member] | | | | ifrs-smes:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_93/Company [member] | | | | ifrs-smes:SeparateMember | N/A |
| r1.c0 | Trade and other receivables [abstract]/Group [member] | ifrs-smes:TradeAndOtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r1.c1 | Trade and other receivables [abstract]/Company [member] | ifrs-smes:TradeAndOtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r2.c0 | Trade receivables [abstract]/Group [member] | ssmt-mpers:TradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r2.c1 | Trade receivables [abstract]/Company [member] | ssmt-mpers:TradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r3.c0 | Trade receivables due from contract customers/Group [member] | ssmt-mpers:ReceivablesFromContractsWithCustomers | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Trade receivables due from contract customers/Company [member] | ssmt-mpers:ReceivablesFromContractsWithCustomers | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r4.c0 | Trade receivables due from holding company/Group [member] | ssmt-mpers:TradeReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Trade receivables due from holding company/Company [member] | ssmt-mpers:TradeReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r5.c0 | Trade receivables due from subsidiaries/Group [member] | ssmt-mpers:TradeReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Trade receivables due from subsidiaries/Company [member] | ssmt-mpers:TradeReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r6.c0 | Trade receivables due from associates/Group [member] | ssmt-mpers:TradeReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Trade receivables due from associates/Company [member] | ssmt-mpers:TradeReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r7.c0 | Trade receivables due from joint ventures/Group [member] | ssmt-mpers:TradeReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Trade receivables due from joint ventures/Company [member] | ssmt-mpers:TradeReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r8.c0 | Trade receivables due from other related parties/Group [member] | ssmt-mpers:TradeReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Trade receivables due from other related parties/Company [member] | ssmt-mpers:TradeReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r9.c0 | Other trade receivables/Group [member] | ssmt-mpers:OtherTradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Other trade receivables/Company [member] | ssmt-mpers:OtherTradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r10.c0 | Total trade receivables/Group [member] | ssmt-mpers:TradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Total trade receivables/Company [member] | ssmt-mpers:TradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r11.c0 | Other receivables [abstract]/Group [member] | ssmt-mpers:OtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r11.c1 | Other receivables [abstract]/Company [member] | ssmt-mpers:OtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r12.c0 | Other receivables due from related parties [abstract]/Group [member] | ssmt-mpers:OtherReceivablesDueFromRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r12.c1 | Other receivables due from related parties [abstract]/Company [member] | ssmt-mpers:OtherReceivablesDueFromRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r13.c0 | Other receivables due from holding company/Group [member] | ssmt-mpers:OtherReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Other receivables due from holding company/Company [member] | ssmt-mpers:OtherReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r14.c0 | Other receivables due from subsidiaries/Group [member] | ssmt-mpers:OtherReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Other receivables due from subsidiaries/Company [member] | ssmt-mpers:OtherReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r15.c0 | Other receivables due from associates/Group [member] | ssmt-mpers:OtherReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Other receivables due from associates/Company [member] | ssmt-mpers:OtherReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r16.c0 | Other receivables due from joint ventures/Group [member] | ssmt-mpers:OtherReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Other receivables due from joint ventures/Company [member] | ssmt-mpers:OtherReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r17.c0 | Other receivables due from other related parties/Group [member] | ssmt-mpers:OtherReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r17.c1 | Other receivables due from other related parties/Company [member] | ssmt-mpers:OtherReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r18.c0 | Total other receivables due from related parties/Group [member] | ssmt-mpers:OtherReceivablesDueFromRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Total other receivables due from related parties/Company [member] | ssmt-mpers:OtherReceivablesDueFromRelatedParties | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r19.c0 | Prepayments and accrued income [abstract]/Group [member] | ssmt-mpers:PrepaymentsAndAccruedIncomeAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r19.c1 | Prepayments and accrued income [abstract]/Company [member] | ssmt-mpers:PrepaymentsAndAccruedIncomeAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r20.c0 | Prepayments/Group [member] | ssmt-mpers:OtherPrepayments | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r20.c1 | Prepayments/Company [member] | ssmt-mpers:OtherPrepayments | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r21.c0 | Accrued income/Group [member] | ssmt-mpers:OtherAccruedIncome | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r21.c1 | Accrued income/Company [member] | ssmt-mpers:OtherAccruedIncome | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r22.c0 | Total prepayments and accrued income/Group [member] | ssmt-mpers:PrepaymentsAndAccruedIncome | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r22.c1 | Total prepayments and accrued income/Company [member] | ssmt-mpers:PrepaymentsAndAccruedIncome | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r23.c0 | Non-trade receivables [abstract]/Group [member] | ssmt-mpers:NontradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r23.c1 | Non-trade receivables [abstract]/Company [member] | ssmt-mpers:NontradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r24.c0 | Interest receivables/Group [member] | ssmt-mpers:NontradeInterestReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r24.c1 | Interest receivables/Company [member] | ssmt-mpers:NontradeInterestReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r25.c0 | Deposits/Group [member] | ssmt-mpers:NontradeReceivablesDeposits | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r25.c1 | Deposits/Company [member] | ssmt-mpers:NontradeReceivablesDeposits | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r26.c0 | Dividend receivables/Group [member] | ssmt-mpers:NontradeDividendReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r26.c1 | Dividend receivables/Company [member] | ssmt-mpers:NontradeDividendReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r27.c0 | Lease and hire purchase receivables/Group [member] | ssmt-mpers:NontradeLeaseAndHirePurchaseReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r27.c1 | Lease and hire purchase receivables/Company [member] | ssmt-mpers:NontradeLeaseAndHirePurchaseReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r28.c0 | Other non-trade receivables/Group [member] | ssmt-mpers:OtherNontradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r28.c1 | Other non-trade receivables/Company [member] | ssmt-mpers:OtherNontradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r29.c0 | Total non-trade receivables/Group [member] | ssmt-mpers:NontradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r29.c1 | Total non-trade receivables/Company [member] | ssmt-mpers:NontradeReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r30.c0 | Total other receivables/Group [member] | ssmt-mpers:OtherReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r30.c1 | Total other receivables/Company [member] | ssmt-mpers:OtherReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r31.c0 | Total trade and other receivables/Group [member] | ifrs-smes:TradeAndOtherReceivables | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r31.c1 | Total trade and other receivables/Company [member] | ifrs-smes:TradeAndOtherReceivables | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |