| r0.c0 | RuleNode_293/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_293/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Non-current borrowings [abstract]/Group [member] | ifrs-full:NoncurrentPortionOfNoncurrentBorrowingsByTypeAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Non-current borrowings [abstract]/Company [member] | ifrs-full:NoncurrentPortionOfNoncurrentBorrowingsByTypeAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Non-current portion of non-current secured bank loans received [abstract]/Group [member] | ssmt-mfrs:NoncurrentPortionOfNoncurrentSecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r2.c1 | Non-current portion of non-current secured bank loans received [abstract]/Company [member] | ssmt-mfrs:NoncurrentPortionOfNoncurrentSecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r3.c0 | Term loans/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredTermLoans | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Term loans/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredTermLoans | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r4.c0 | Islamic financing facilities/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredIslamicFinancingFacilities | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Islamic financing facilities/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredIslamicFinancingFacilities | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r5.c0 | Hire purchase and finance lease liabilities/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredHirePurchaseAndFinanceLeaseLiabilities | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Hire purchase and finance lease liabilities/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredHirePurchaseAndFinanceLeaseLiabilities | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Islamic medium term notes/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Islamic medium term notes/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Sukuk/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredSukuk | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Sukuk/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredSukuk | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r8.c0 | Revolving credit and others/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Revolving credit and others/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r9.c0 | Other secured bank loans/Group [member] | ssmt-mfrs:OtherNoncurrentSecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Other secured bank loans/Company [member] | ssmt-mfrs:OtherNoncurrentSecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r10.c0 | Total non-current portion of non-current secured bank loans received/Group [member] | ifrs-full:NoncurrentPortionOfNoncurrentSecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Total non-current portion of non-current secured bank loans received/Company [member] | ifrs-full:NoncurrentPortionOfNoncurrentSecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Non-current portion of non-current unsecured bank loans received [abstract]/Group [member] | ssmt-mfrs:NoncurrentPortionOfNoncurrentUnsecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r11.c1 | Non-current portion of non-current unsecured bank loans received [abstract]/Company [member] | ssmt-mfrs:NoncurrentPortionOfNoncurrentUnsecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r12.c0 | Term loans/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredTermLoans | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Term loans/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredTermLoans | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r13.c0 | Irredeemable Convertible Unsecured Loan Stocks (ICULS)/Group [member] | ssmt-mfrs:NoncurrentPortionofUnsecuredIrredeemableConvertibleUnsecuredLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Irredeemable Convertible Unsecured Loan Stocks (ICULS)/Company [member] | ssmt-mfrs:NoncurrentPortionofUnsecuredIrredeemableConvertibleUnsecuredLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r14.c0 | Islamic financing facilities/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredIslamicFinancingFacilities | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Islamic financing facilities/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredIslamicFinancingFacilities | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r15.c0 | Hire purchase and finance lease liabilities/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredHirePurchaseAndFinanceLeaseLiabilities | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Hire purchase and finance lease liabilities/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredHirePurchaseAndFinanceLeaseLiabilities | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r16.c0 | Islamic medium term notes/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Islamic medium term notes/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r17.c0 | Sukuk/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredSukuk | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r17.c1 | Sukuk/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredSukuk | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r18.c0 | Revolving credit and others/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Revolving credit and others/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r19.c0 | Other unsecured bank loans received/Group [member] | ssmt-mfrs:OtherNoncurrentUnsecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r19.c1 | Other unsecured bank loans received/Company [member] | ssmt-mfrs:OtherNoncurrentUnsecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r20.c0 | Total non-current portion of non-current unsecured bank loans received/Group [member] | ifrs-full:NoncurrentPortionOfNoncurrentUnsecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r20.c1 | Total non-current portion of non-current unsecured bank loans received/Company [member] | ifrs-full:NoncurrentPortionOfNoncurrentUnsecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r21.c0 | Non-current portion of secured bonds/sukuk/loan stock [abstract]/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredBondsSukukAndLoanStockAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r21.c1 | Non-current portion of secured bonds/sukuk/loan stock [abstract]/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredBondsSukukAndLoanStockAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r22.c0 | Bonds/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredBonds | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r22.c1 | Bonds/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredBonds | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r23.c0 | Sukuk/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredSukukAsPerShariahCommittee | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r23.c1 | Sukuk/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredSukukAsPerShariahCommittee | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r24.c0 | Medium term notes/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r24.c1 | Medium term notes/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r25.c0 | Loan stocks/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r25.c1 | Loan stocks/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r26.c0 | Preference shares/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredPreferenceShares | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r26.c1 | Preference shares/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredPreferenceShares | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r27.c0 | Total non-current portion of secured bonds/sukuk/loan stocks/Group [member] | ssmt-mfrs:NoncurrentPortionOfSecuredBondsSukukAndLoanStock | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r27.c1 | Total non-current portion of secured bonds/sukuk/loan stocks/Company [member] | ssmt-mfrs:NoncurrentPortionOfSecuredBondsSukukAndLoanStock | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r28.c0 | Non-current portion of unsecured bonds/sukuk/loan stock [abstract]/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredBondsSukukAndLoanStockAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r28.c1 | Non-current portion of unsecured bonds/sukuk/loan stock [abstract]/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredBondsSukukAndLoanStockAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r29.c0 | Bonds/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredBonds | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r29.c1 | Bonds/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredBonds | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r30.c0 | Sukuk/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredSukukAsPerShariahCommittee | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r30.c1 | Sukuk/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredSukukAsPerShariahCommittee | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r31.c0 | Medium term notes/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r31.c1 | Medium term notes/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r32.c0 | Loan stocks/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r32.c1 | Loan stocks/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r33.c0 | Preference shares/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredPreferenceShares | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r33.c1 | Preference shares/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredPreferenceShares | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r34.c0 | Total non-current portion of unsecured bonds/sukuk/loan stocks/Group [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredBondsSukukAndLoanStock | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r34.c1 | Total non-current portion of unsecured bonds/sukuk/loan stocks/Company [member] | ssmt-mfrs:NoncurrentPortionOfUnsecuredBondsSukukAndLoanStock | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r35.c0 | Other non-current borrowings [abstract]/Group [member] | ssmt-mfrs:NoncurrentPortionOfOtherNoncurrentBorrowingsAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r35.c1 | Other non-current borrowings [abstract]/Company [member] | ssmt-mfrs:NoncurrentPortionOfOtherNoncurrentBorrowingsAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r36.c0 | Loan from subsidiaries/Group [member] | ssmt-mfrs:OtherNoncurrentPortionOfLoanFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r36.c1 | Loan from subsidiaries/Company [member] | ssmt-mfrs:OtherNoncurrentPortionOfLoanFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r37.c0 | Loan from associates/Group [member] | ssmt-mfrs:OtherNoncurrentPortionOfLoanFromAssociates | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r37.c1 | Loan from associates/Company [member] | ssmt-mfrs:OtherNoncurrentPortionOfLoanFromAssociates | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r38.c0 | Loan from joint ventures/Group [member] | ssmt-mfrs:OtherNoncurrentPortionOfLoanFromJointVentures | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r38.c1 | Loan from joint ventures/Company [member] | ssmt-mfrs:OtherNoncurrentPortionOfLoanFromJointVentures | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r39.c0 | Redeemable preference shares/Group [member] | ssmt-mfrs:OtherNoncurrentPortionOfRedeemablePreferenceShares | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r39.c1 | Redeemable preference shares/Company [member] | ssmt-mfrs:OtherNoncurrentPortionOfRedeemablePreferenceShares | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r40.c0 | Other non-current borrowings/Group [member] | ssmt-mfrs:OtherNoncurrentPortionOfMiscellaneousBorrowings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r40.c1 | Other non-current borrowings/Company [member] | ssmt-mfrs:OtherNoncurrentPortionOfMiscellaneousBorrowings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r41.c0 | Total other non-current borrowings/Group [member] | ifrs-full:NoncurrentPortionOfOtherNoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r41.c1 | Total other non-current borrowings/Company [member] | ifrs-full:NoncurrentPortionOfOtherNoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r42.c0 | Total non-current borrowings/Group [member] | ifrs-full:LongtermBorrowings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r42.c1 | Total non-current borrowings/Company [member] | ifrs-full:LongtermBorrowings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |