| r0.c0 | RuleNode_2/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_2/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Sub classification of assets, liabilities and equities [abstract]/Group [member] | ssmt-mfrs:StatementOnSubclassificationOfAssetsLiabilitiesAndEquityAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Sub classification of assets, liabilities and equities [abstract]/Company [member] | ssmt-mfrs:StatementOnSubclassificationOfAssetsLiabilitiesAndEquityAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Property, plant and equipment [abstract]/Group [member] | ifrs-full:PropertyPlantAndEquipmentAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r2.c1 | Property, plant and equipment [abstract]/Company [member] | ifrs-full:PropertyPlantAndEquipmentAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r3.c0 | Land and buildings [abstract]/Group [member] | ifrs-full:LandAndBuildingsAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r3.c1 | Land and buildings [abstract]/Company [member] | ifrs-full:LandAndBuildingsAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r4.c0 | Land [abstract]/Group [member] | ssmt-mfrs:LandAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r4.c1 | Land [abstract]/Company [member] | ssmt-mfrs:LandAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r5.c0 | Freehold land/Group [member] | ssmt-mfrs:FreeholdLand | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Freehold land/Company [member] | ssmt-mfrs:FreeholdLand | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Long term leasehold land/Group [member] | ssmt-mfrs:LongtermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Long term leasehold land/Company [member] | ssmt-mfrs:LongtermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Short term leasehold land/Group [member] | ssmt-mfrs:ShorttermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Short term leasehold land/Company [member] | ssmt-mfrs:ShorttermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r8.c0 | Total land/Group [member] | ifrs-full:Land | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Total land/Company [member] | ifrs-full:Land | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r9.c0 | Buildings [abstract]/Group [member] | ssmt-mfrs:BuildingAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r9.c1 | Buildings [abstract]/Company [member] | ssmt-mfrs:BuildingAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r10.c0 | Building on freehold land/Group [member] | ssmt-mfrs:BuildingOnFreeholdLand | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Building on freehold land/Company [member] | ssmt-mfrs:BuildingOnFreeholdLand | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Building on long term leasehold land/Group [member] | ssmt-mfrs:BuildingOnLongtermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Building on long term leasehold land/Company [member] | ssmt-mfrs:BuildingOnLongtermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r12.c0 | Building on short term leasehold land/Group [member] | ssmt-mfrs:BuildingOnShorttermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Building on short term leasehold land/Company [member] | ssmt-mfrs:BuildingOnShorttermLeaseholdLand | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r13.c0 | Leased properties/Group [member] | ssmt-mfrs:LeasedProperties | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Leased properties/Company [member] | ssmt-mfrs:LeasedProperties | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r14.c0 | Total buildings/Group [member] | ifrs-full:Buildings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Total buildings/Company [member] | ifrs-full:Buildings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r15.c0 | Total land and buildings/Group [member] | ifrs-full:LandAndBuildings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Total land and buildings/Company [member] | ifrs-full:LandAndBuildings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r16.c0 | Vehicles [abstract]/Group [member] | ifrs-full:VehiclesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r16.c1 | Vehicles [abstract]/Company [member] | ifrs-full:VehiclesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r17.c0 | Vessels/Group [member] | ssmt-mfrs:Vessels | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r17.c1 | Vessels/Company [member] | ssmt-mfrs:Vessels | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r18.c0 | Aircraft/Group [member] | ifrs-full:Aircraft | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Aircraft/Company [member] | ifrs-full:Aircraft | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r19.c0 | Motor vehicles/Group [member] | ifrs-full:MotorVehicles | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r19.c1 | Motor vehicles/Company [member] | ifrs-full:MotorVehicles | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r20.c0 | Other vehicles/Group [member] | ssmt-mfrs:OtherVehicles | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r20.c1 | Other vehicles/Company [member] | ssmt-mfrs:OtherVehicles | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r21.c0 | Total vehicles/Group [member] | ifrs-full:Vehicles | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r21.c1 | Total vehicles/Company [member] | ifrs-full:Vehicles | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r22.c0 | Machinery/Group [member] | ifrs-full:Machinery | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r22.c1 | Machinery/Company [member] | ifrs-full:Machinery | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r23.c0 | Plant and equipment/Group [member] | ssmt-mfrs:PlantAndEquipment | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r23.c1 | Plant and equipment/Company [member] | ssmt-mfrs:PlantAndEquipment | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r24.c0 | Office equipment, fixture and fittings/Group [member] | ssmt-mfrs:OfficeEquipmentFixtureAndFittings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r24.c1 | Office equipment, fixture and fittings/Company [member] | ssmt-mfrs:OfficeEquipmentFixtureAndFittings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r25.c0 | Computer software and hardware/Group [member] | ssmt-mfrs:ComputerSoftwareAndHardware | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r25.c1 | Computer software and hardware/Company [member] | ssmt-mfrs:ComputerSoftwareAndHardware | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r26.c0 | Bearer plants/Group [member] | ifrs-full:BearerPlants | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r26.c1 | Bearer plants/Company [member] | ifrs-full:BearerPlants | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r27.c0 | Infrastructure and site facilities/Group [member] | ssmt-mfrs:InfrastructureAndSiteFacilities | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r27.c1 | Infrastructure and site facilities/Company [member] | ssmt-mfrs:InfrastructureAndSiteFacilities | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r28.c0 | Mining assets/Group [member] | ifrs-full:MiningAssets | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r28.c1 | Mining assets/Company [member] | ifrs-full:MiningAssets | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r29.c0 | Oil and gas assets/Group [member] | ifrs-full:OilAndGasAssets | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r29.c1 | Oil and gas assets/Company [member] | ifrs-full:OilAndGasAssets | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r30.c0 | Tangible exploration and evaluation assets/Group [member] | ssmt-mfrs:TangibleExplorationAndEvaluationAssets | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r30.c1 | Tangible exploration and evaluation assets/Company [member] | ssmt-mfrs:TangibleExplorationAndEvaluationAssets | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r31.c0 | Telecommunication equipments/Group [member] | ssmt-mfrs:TelecommunicationEquipments | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r31.c1 | Telecommunication equipments/Company [member] | ssmt-mfrs:TelecommunicationEquipments | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r32.c0 | Construction in progress/Asset work-in progress/Group [member] | ifrs-full:ConstructionInProgress | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r32.c1 | Construction in progress/Asset work-in progress/Company [member] | ifrs-full:ConstructionInProgress | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r33.c0 | Other property, plant and equipment/Group [member] | ifrs-full:OtherPropertyPlantAndEquipment | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r33.c1 | Other property, plant and equipment/Company [member] | ifrs-full:OtherPropertyPlantAndEquipment | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r34.c0 | Total property, plant and equipment/Group [member] | ifrs-full:PropertyPlantAndEquipment | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r34.c1 | Total property, plant and equipment/Company [member] | ifrs-full:PropertyPlantAndEquipment | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |