| r0.c0 | RuleNode_120/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_120/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Trade and other receivables [abstract]/Group [member] | ifrs-full:TradeAndOtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Trade and other receivables [abstract]/Company [member] | ifrs-full:TradeAndOtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Trade receivables [abstract]/Group [member] | ssmt-mfrs:TradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r2.c1 | Trade receivables [abstract]/Company [member] | ssmt-mfrs:TradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r3.c0 | Trade receivables/Group [member] | ssmt-mfrs:TradeReceivablesDueFromCustomers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Trade receivables/Company [member] | ssmt-mfrs:TradeReceivablesDueFromCustomers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r4.c0 | Trade receivables due from contract customers/Group [member] | ifrs-full:ReceivablesFromContractsWithCustomers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Trade receivables due from contract customers/Company [member] | ifrs-full:ReceivablesFromContractsWithCustomers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r5.c0 | Trade receivables due from holding company/Group [member] | ssmt-mfrs:TradeReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Trade receivables due from holding company/Company [member] | ssmt-mfrs:TradeReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Trade receivables due from subsidiaries/Group [member] | ssmt-mfrs:TradeReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Trade receivables due from subsidiaries/Company [member] | ssmt-mfrs:TradeReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Trade receivables from associates/Group [member] | ssmt-mfrs:TradeReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Trade receivables from associates/Company [member] | ssmt-mfrs:TradeReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r8.c0 | Trade receivables due from joint ventures/Group [member] | ssmt-mfrs:TradeReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Trade receivables due from joint ventures/Company [member] | ssmt-mfrs:TradeReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r9.c0 | Trade receivables due from other related parties/Group [member] | ssmt-mfrs:TradeReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Trade receivables due from other related parties/Company [member] | ssmt-mfrs:TradeReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r10.c0 | Money lending receivables/Group [member] | ssmt-mfrs:TradeReceivablesDueFromMoneyLenders | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Money lending receivables/Company [member] | ssmt-mfrs:TradeReceivablesDueFromMoneyLenders | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Unearned current carrying charges/Group [member] | ssmt-mfrs:TradeReceivablesUnearnedCurrentCarryingCharges | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Unearned current carrying charges/Company [member] | ssmt-mfrs:TradeReceivablesUnearnedCurrentCarryingCharges | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r12.c0 | Other trade receivables/Group [member] | ssmt-mfrs:OtherTradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Other trade receivables/Company [member] | ssmt-mfrs:OtherTradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r13.c0 | Total trade receivables/Group [member] | ifrs-full:TradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Total trade receivables/Company [member] | ifrs-full:TradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r14.c0 | Other receivables [abstract]/Group [member] | ssmt-mfrs:OtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r14.c1 | Other receivables [abstract]/Company [member] | ssmt-mfrs:OtherReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r15.c0 | Other Receivables due from related parties [abstract]/Group [member] | ssmt-mfrs:OtherReceivablesDueFromRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r15.c1 | Other Receivables due from related parties [abstract]/Company [member] | ssmt-mfrs:OtherReceivablesDueFromRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r16.c0 | Other receivables due from holding company/Group [member] | ssmt-mfrs:OtherReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Other receivables due from holding company/Company [member] | ssmt-mfrs:OtherReceivablesDueFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r17.c0 | Other receivables due from subsidiaries/Group [member] | ssmt-mfrs:OtherReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r17.c1 | Other receivables due from subsidiaries/Company [member] | ssmt-mfrs:OtherReceivablesDueFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r18.c0 | Other receivables due from associates/Group [member] | ssmt-mfrs:OtherReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Other receivables due from associates/Company [member] | ssmt-mfrs:OtherReceivablesDueFromAssociates | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r19.c0 | Other receivables due from joint ventures/Group [member] | ssmt-mfrs:OtherReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r19.c1 | Other receivables due from joint ventures/Company [member] | ssmt-mfrs:OtherReceivablesDueFromJointVentures | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r20.c0 | Other receivables due from other related parties/Group [member] | ssmt-mfrs:OtherReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r20.c1 | Other receivables due from other related parties/Company [member] | ssmt-mfrs:OtherReceivablesDueFromOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r21.c0 | Total other receivables due from related parties/Group [member] | ssmt-mfrs:OtherReceivablesDueFromRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r21.c1 | Total other receivables due from related parties/Company [member] | ssmt-mfrs:OtherReceivablesDueFromRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r22.c0 | Prepayments and accrued income [abstract]/Group [member] | ifrs-full:PrepaymentsAndAccruedIncomeAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r22.c1 | Prepayments and accrued income [abstract]/Company [member] | ifrs-full:PrepaymentsAndAccruedIncomeAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r23.c0 | Prepayments/Group [member] | ssmt-mfrs:OtherPrepayments | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r23.c1 | Prepayments/Company [member] | ssmt-mfrs:OtherPrepayments | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r24.c0 | Accrued income/Group [member] | ssmt-mfrs:OtherAccruedIncome | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r24.c1 | Accrued income/Company [member] | ssmt-mfrs:OtherAccruedIncome | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r25.c0 | Total prepayments and accrued income/Group [member] | ifrs-full:PrepaymentsAndAccruedIncome | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r25.c1 | Total prepayments and accrued income/Company [member] | ifrs-full:PrepaymentsAndAccruedIncome | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r26.c0 | Non-trade receivables [abstract]/Group [member] | ssmt-mfrs:NontradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r26.c1 | Non-trade receivables [abstract]/Company [member] | ssmt-mfrs:NontradeReceivablesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r27.c0 | Deposits/Group [member] | ssmt-mfrs:NontradeReceivablesDeposits | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r27.c1 | Deposits/Company [member] | ssmt-mfrs:NontradeReceivablesDeposits | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r28.c0 | Dividend receivables/Group [member] | ssmt-mfrs:NontradeDividendReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r28.c1 | Dividend receivables/Company [member] | ssmt-mfrs:NontradeDividendReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r29.c0 | Interest receivables/Group [member] | ssmt-mfrs:NontradeInterestReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r29.c1 | Interest receivables/Company [member] | ssmt-mfrs:NontradeInterestReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r30.c0 | Other non-trade receivables/Group [member] | ssmt-mfrs:OtherNontradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r30.c1 | Other non-trade receivables/Company [member] | ssmt-mfrs:OtherNontradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r31.c0 | Total non-trade receivables/Group [member] | ssmt-mfrs:NontradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r31.c1 | Total non-trade receivables/Company [member] | ssmt-mfrs:NontradeReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r32.c0 | Total other receivables/Group [member] | ifrs-full:OtherReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r32.c1 | Total other receivables/Company [member] | ifrs-full:OtherReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r33.c0 | Total trade and other receivables/Group [member] | ifrs-full:TradeAndOtherReceivables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r33.c1 | Total trade and other receivables/Company [member] | ifrs-full:TradeAndOtherReceivables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |