| r0.c0 | RuleNode_210/Group [member] | | | | ifrs-smes:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_210/Company [member] | | | | ifrs-smes:SeparateMember | N/A |
| r1.c0 | Non-current loans and borrowings [abstract]/Group [member] | ssmt-mpers:NoncurrentBorrowingsAbstract | xbrli:stringItemType | duration | ifrs-smes:ConsolidatedMember | N/A |
| r1.c1 | Non-current loans and borrowings [abstract]/Company [member] | ssmt-mpers:NoncurrentBorrowingsAbstract | xbrli:stringItemType | duration | ifrs-smes:SeparateMember | N/A |
| r2.c0 | Secured bank loans/Group [member] | ssmt-mpers:NoncurrentPortionOfNoncurrentSecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r2.c1 | Secured bank loans/Company [member] | ssmt-mpers:NoncurrentPortionOfNoncurrentSecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r3.c0 | Unsecured bank loans/Group [member] | ssmt-mpers:NoncurrentPortionOfNoncurrentUnsecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Unsecured bank loans/Company [member] | ssmt-mpers:NoncurrentPortionOfNoncurrentUnsecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r4.c0 | Secured convertible notes/Group [member] | ssmt-mpers:NoncurrentPortionOfSecuredConvertibleNotes | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Secured convertible notes/Company [member] | ssmt-mpers:NoncurrentPortionOfSecuredConvertibleNotes | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r5.c0 | Unsecured convertible notes/Group [member] | ssmt-mpers:NoncurrentPortionOfUnsecuredConvertibleNotes | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Unsecured convertible notes/Company [member] | ssmt-mpers:NoncurrentPortionOfUnsecuredConvertibleNotes | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r6.c0 | Redeemable preference shares/Group [member] | ssmt-mpers:OtherNoncurrentPortionOfRedeemablePreferenceShares | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Redeemable preference shares/Company [member] | ssmt-mpers:OtherNoncurrentPortionOfRedeemablePreferenceShares | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r7.c0 | Finance lease liabilities/Group [member] | ssmt-mpers:NoncurrentPortionOfFinanceLeaseLiabilities | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Finance lease liabilities/Company [member] | ssmt-mpers:NoncurrentPortionOfFinanceLeaseLiabilities | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r8.c0 | Loan from holding company/Group [member] | ssmt-mpers:NoncurrentPortionOfLoanFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Loan from holding company/Company [member] | ssmt-mpers:NoncurrentPortionOfLoanFromHoldingCompany | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r9.c0 | Loan from subsidiaries/Group [member] | ssmt-mpers:OtherNoncurrentPortionOfLoanFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Loan from subsidiaries/Company [member] | ssmt-mpers:OtherNoncurrentPortionOfLoanFromSubsidiaries | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r10.c0 | Loan from associates/Group [member] | ssmt-mpers:OtherNoncurrentPortionOfLoanFromAssociates | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Loan from associates/Company [member] | ssmt-mpers:OtherNoncurrentPortionOfLoanFromAssociates | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r11.c0 | Loan from joint ventures/Group [member] | ssmt-mpers:OtherNoncurrentPortionOfLoanFromJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Loan from joint ventures/Company [member] | ssmt-mpers:OtherNoncurrentPortionOfLoanFromJointVentures | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r12.c0 | Loan from other related companies/Group [member] | ssmt-mpers:NoncurrentPortionOfLoanFromOtherRelatedCompanies | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Loan from other related companies/Company [member] | ssmt-mpers:NoncurrentPortionOfLoanFromOtherRelatedCompanies | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r13.c0 | Other secured bank facilities/Group [member] | ssmt-mpers:OtherNoncurrentSecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Other secured bank facilities/Company [member] | ssmt-mpers:OtherNoncurrentSecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r14.c0 | Other unsecured bank facilities/Group [member] | ssmt-mpers:OtherNoncurrentUnsecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Other unsecured bank facilities/Company [member] | ssmt-mpers:OtherNoncurrentUnsecuredBankLoans | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r15.c0 | Other non-current borrowings/Group [member] | ssmt-mpers:NoncurrentPortionOfOtherNoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Other non-current borrowings/Company [member] | ssmt-mpers:NoncurrentPortionOfOtherNoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |
| r16.c0 | Total non-current loans and borrowings/Group [member] | ssmt-mpers:NoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-smes:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Total non-current loans and borrowings/Company [member] | ssmt-mpers:NoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-smes:SeparateMember | iso4217:MYR |