| r0.c0 | RuleNode_53/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_53/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Other income [abstract]/Group [member] | ssmt-mfrs:OtherIncomeAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Other income [abstract]/Company [member] | ssmt-mfrs:OtherIncomeAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Deferred income/Group [member] | ssmt-mfrs:AmortisationOfDeferredIncome | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r2.c1 | Deferred income/Company [member] | ssmt-mfrs:AmortisationOfDeferredIncome | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r3.c0 | Bad debts recovered/Group [member] | ssmt-mfrs:BadDebtsRecovered | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Bad debts recovered/Company [member] | ssmt-mfrs:BadDebtsRecovered | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r4.c0 | Dividend income/Group [member] | ssmt-mfrs:OtherIncomeDividend | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Dividend income/Company [member] | ssmt-mfrs:OtherIncomeDividend | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r5.c0 | Royalty/franchise income/Group [member] | ssmt-mfrs:OtherIncomeRoyaltyAndFranchise | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Royalty/franchise income/Company [member] | ssmt-mfrs:OtherIncomeRoyaltyAndFranchise | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Write back of fuel cost/Group [member] | ssmt-mfrs:WriteBackOfFuelCost | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Write back of fuel cost/Company [member] | ssmt-mfrs:WriteBackOfFuelCost | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Income from reimbursements under insurance policies/Group [member] | ifrs-full:IncomeFromReimbursementsUnderInsurancePolicies | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Income from reimbursements under insurance policies/Company [member] | ifrs-full:IncomeFromReimbursementsUnderInsurancePolicies | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r8.c0 | Grant or incentives by Malaysian government or it's agencies/Group [member] | ssmt-mfrs:GrantsOrIncentivesReceivedByMalaysianGovernmentOrAgencies | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Grant or incentives by Malaysian government or it's agencies/Company [member] | ssmt-mfrs:GrantsOrIncentivesReceivedByMalaysianGovernmentOrAgencies | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r9.c0 | Grant or incentives by foreign government or it's agencies/Group [member] | ssmt-mfrs:GrantsOrIncentivesReceivedByForeignGovernmentOrAgencies | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Grant or incentives by foreign government or it's agencies/Company [member] | ssmt-mfrs:GrantsOrIncentivesReceivedByForeignGovernmentOrAgencies | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r10.c0 | Contributions or donations by local contributor/Group [member] | ssmt-mfrs:ContributionsReceivedByLocalContributor | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Contributions or donations by local contributor/Company [member] | ssmt-mfrs:ContributionsReceivedByLocalContributor | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Contributions or donations by foreign contributor/Group [member] | ssmt-mfrs:ContributionsReceivedByForeignContributor | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Contributions or donations by foreign contributor/Company [member] | ssmt-mfrs:ContributionsReceivedByForeignContributor | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r12.c0 | Contributions or donations by unknown contributor/Group [member] | ssmt-mfrs:ContributionsReceivedByUnknownContributor | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Contributions or donations by unknown contributor/Company [member] | ssmt-mfrs:ContributionsReceivedByUnknownContributor | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r13.c0 | Foreign exchange gain [abstract]/Group [member] | ssmt-mfrs:ForeignExchangeGainAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r13.c1 | Foreign exchange gain [abstract]/Company [member] | ssmt-mfrs:ForeignExchangeGainAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r14.c0 | Realised gain on foreign exchange/Group [member] | ssmt-mfrs:RealisedGainOnForeignExchange | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Realised gain on foreign exchange/Company [member] | ssmt-mfrs:RealisedGainOnForeignExchange | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r15.c0 | Unrealised gain on foreign exchange/Group [member] | ssmt-mfrs:UnrealisedGainOnForeignExchange | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Unrealised gain on foreign exchange/Company [member] | ssmt-mfrs:UnrealisedGainOnForeignExchange | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r16.c0 | Total foreign exchange gain/Group [member] | ssmt-mfrs:GainsOnForeignExchange | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Total foreign exchange gain/Company [member] | ssmt-mfrs:GainsOnForeignExchange | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r17.c0 | Gain on disposal of subsidiaries, associates and joint ventures [abstract]/Group [member] | ssmt-mfrs:GainsOnDisposalOfSubsidiariesAssociatesAndJointVenturesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r17.c1 | Gain on disposal of subsidiaries, associates and joint ventures [abstract]/Company [member] | ssmt-mfrs:GainsOnDisposalOfSubsidiariesAssociatesAndJointVenturesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r18.c0 | Gain on disposal of subsidiaries/Group [member] | ssmt-mfrs:GainsFromDisposalOfSubsidiaries | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Gain on disposal of subsidiaries/Company [member] | ssmt-mfrs:GainsFromDisposalOfSubsidiaries | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r19.c0 | Gain on disposal of associates/Group [member] | ssmt-mfrs:GainsFromDisposalOfAssociates | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r19.c1 | Gain on disposal of associates/Company [member] | ssmt-mfrs:GainsFromDisposalOfAssociates | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r20.c0 | Gain on disposal of joint ventures/Group [member] | ssmt-mfrs:GainsFromDisposalOfJointVentures | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r20.c1 | Gain on disposal of joint ventures/Company [member] | ssmt-mfrs:GainsFromDisposalOfJointVentures | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r21.c0 | Total gain on disposal of subsidiaries, associates and joint ventures/Group [member] | ssmt-mfrs:GainsOnDisposalOfSubsidiaryJointVenturesAndAssociates | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r21.c1 | Total gain on disposal of subsidiaries, associates and joint ventures/Company [member] | ssmt-mfrs:GainsOnDisposalOfSubsidiaryJointVenturesAndAssociates | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r22.c0 | Gain on disposal from other investments/Group [member] | ssmt-mfrs:GainsOnDisposalOfOtherInvestments | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r22.c1 | Gain on disposal from other investments/Company [member] | ssmt-mfrs:GainsOnDisposalOfOtherInvestments | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r23.c0 | Gain on disposal of property, plant and equipment/Group [member] | ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r23.c1 | Gain on disposal of property, plant and equipment/Company [member] | ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r24.c0 | Gains on disposals of other non-current assets/Group [member] | ifrs-full:GainsOnDisposalsOfNoncurrentAssets | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r24.c1 | Gains on disposals of other non-current assets/Company [member] | ifrs-full:GainsOnDisposalsOfNoncurrentAssets | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r25.c0 | Other gains recognised in profit or loss, fair value measurement, assets/Group [member] | ssmt-mfrs:OtherGainsRecognisedInProfitOrLossFairValueMeasurementAssets | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r25.c1 | Other gains recognised in profit or loss, fair value measurement, assets/Company [member] | ssmt-mfrs:OtherGainsRecognisedInProfitOrLossFairValueMeasurementAssets | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r26.c0 | Reversal of impairment loss recognised in profit or loss [abstract]/Group [member] | ssmt-mfrs:ReversalOfImpairmentLossRecognisedInProfirOrLossAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r26.c1 | Reversal of impairment loss recognised in profit or loss [abstract]/Company [member] | ssmt-mfrs:ReversalOfImpairmentLossRecognisedInProfirOrLossAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r27.c0 | Reversal of impairment loss on receivables/Group [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossLoansAndAdvances | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r27.c1 | Reversal of impairment loss on receivables/Company [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossLoansAndAdvances | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r28.c0 | Reversal of impairment in development expenditure/Group [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossInvestmentProperty | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r28.c1 | Reversal of impairment in development expenditure/Company [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossInvestmentProperty | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r29.c0 | Reversal of impairment in land held for property development/Group [member] | ssmt-mfrs:ReversalOfImpairmentLossInLandHeldForDevelopment | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r29.c1 | Reversal of impairment in land held for property development/Company [member] | ssmt-mfrs:ReversalOfImpairmentLossInLandHeldForDevelopment | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r30.c0 | Reversal of impairment in property, plant and equipment/Group [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r30.c1 | Reversal of impairment in property, plant and equipment/Company [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r31.c0 | Reversal of impairment in other assets/Group [member] | ssmt-mfrs:ReversalOfImpairmentLossForOtherAssets | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r31.c1 | Reversal of impairment in other assets/Company [member] | ssmt-mfrs:ReversalOfImpairmentLossForOtherAssets | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r32.c0 | Total reversal of impairment loss recognised in profit or loss/Group [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r32.c1 | Total reversal of impairment loss recognised in profit or loss/Company [member] | ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLoss | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r33.c0 | Reversal of inventories written down to net realisable value/Group [member] | ifrs-full:ReversalOfInventoryWritedown | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r33.c1 | Reversal of inventories written down to net realisable value/Company [member] | ifrs-full:ReversalOfInventoryWritedown | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r34.c0 | Interest income/Group [member] | ssmt-mfrs:OtherInterestIncome | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r34.c1 | Interest income/Company [member] | ssmt-mfrs:OtherInterestIncome | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r35.c0 | Management fees/Group [member] | ssmt-mfrs:IncomeFromManagementFees | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r35.c1 | Management fees/Company [member] | ssmt-mfrs:IncomeFromManagementFees | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r36.c0 | Net deposits recognised/Group [member] | ssmt-mfrs:NetDepositsRecognised | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r36.c1 | Net deposits recognised/Company [member] | ssmt-mfrs:NetDepositsRecognised | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r37.c0 | Net fair value gain on derivatives/Group [member] | ifrs-full:GainsOnChangeInFairValueOfDerivatives | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r37.c1 | Net fair value gain on derivatives/Company [member] | ifrs-full:GainsOnChangeInFairValueOfDerivatives | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r38.c0 | Net fair value gain on recycle of forex reserve upon disposal of subsidiaries/Group [member] | ssmt-mfrs:FairValueGainOnRecycleOfForexReserveUponDisposalOfSubsdiaries | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r38.c1 | Net fair value gain on recycle of forex reserve upon disposal of subsidiaries/Company [member] | ssmt-mfrs:FairValueGainOnRecycleOfForexReserveUponDisposalOfSubsdiaries | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r39.c0 | Other fee and commission/Group [member] | ssmt-mfrs:OtherFeesAndCommissionIncome | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r39.c1 | Other fee and commission/Company [member] | ssmt-mfrs:OtherFeesAndCommissionIncome | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r40.c0 | Other rental income/Group [member] | ssmt-mfrs:OtherRentalIncome | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r40.c1 | Other rental income/Company [member] | ssmt-mfrs:OtherRentalIncome | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r41.c0 | Rental income on land and buildings/Group [member] | ssmt-mfrs:OtherRentalIncomeOnLandAndBuildings | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r41.c1 | Rental income on land and buildings/Company [member] | ssmt-mfrs:OtherRentalIncomeOnLandAndBuildings | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r42.c0 | Other miscellaneous income/Group [member] | ifrs-full:MiscellaneousOtherOperatingIncome | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r42.c1 | Other miscellaneous income/Company [member] | ifrs-full:MiscellaneousOtherOperatingIncome | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r43.c0 | Total other income/Group [member] | ifrs-full:OtherIncome | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r43.c1 | Total other income/Company [member] | ifrs-full:OtherIncome | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |