| r0.c0 | RuleNode_229/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_229/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Current borrowings [abstract]/Group [member] | ssmt-mfrs:CurrentBorrowingsAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Current borrowings [abstract]/Company [member] | ssmt-mfrs:CurrentBorrowingsAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Current secured bank loans received and current portion of non-current secured bank loans received [abstract]/Group [member] | ssmt-mfrs:CurrentSecuredBankLoansReceivedAndCurrentPortionOfNoncurrentSecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r2.c1 | Current secured bank loans received and current portion of non-current secured bank loans received [abstract]/Company [member] | ssmt-mfrs:CurrentSecuredBankLoansReceivedAndCurrentPortionOfNoncurrentSecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r3.c0 | Islamic medium term notes/Group [member] | ssmt-mfrs:CurrentPortionOfNoncurrentSecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Islamic medium term notes/Company [member] | ssmt-mfrs:CurrentPortionOfNoncurrentSecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r4.c0 | Revolving credit and others/Group [member] | ssmt-mfrs:CurrentPortionOfNoncurrentSecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Revolving credit and others/Company [member] | ssmt-mfrs:CurrentPortionOfNoncurrentSecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r5.c0 | Other secured bank loans received/Group [member] | ssmt-mfrs:CurrentPortionOfNoncurrentSecuredOtherBankLoanReceived | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Other secured bank loans received/Company [member] | ssmt-mfrs:CurrentPortionOfNoncurrentSecuredOtherBankLoanReceived | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Total current secured bank loans received and current portion of non-current secured bank loans received/Group [member] | ifrs-full:CurrentSecuredBankLoansReceivedAndCurrentPortionOfNoncurrentSecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Total current secured bank loans received and current portion of non-current secured bank loans received/Company [member] | ifrs-full:CurrentSecuredBankLoansReceivedAndCurrentPortionOfNoncurrentSecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Current unsecured bank loans received and current portion of non-current unsecured bank loans received [abstract]/Group [member] | ssmt-mfrs:CurrentUnsecuredBankLoansReceivedAndCurrentPortionOfNoncurrentUnsecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r7.c1 | Current unsecured bank loans received and current portion of non-current unsecured bank loans received [abstract]/Company [member] | ssmt-mfrs:CurrentUnsecuredBankLoansReceivedAndCurrentPortionOfNoncurrentUnsecuredBankLoansReceivedAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r8.c0 | Islamic medium term notes/Group [member] | ssmt-mfrs:CurrentPortionOfNoncurrentUnsecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Islamic medium term notes/Company [member] | ssmt-mfrs:CurrentPortionOfNoncurrentUnsecuredIslamicMediumTermNotes | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r9.c0 | Revolving credit and others/Group [member] | ssmt-mfrs:CurrentPortionOfNoncurrentUnsecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Revolving credit and others/Company [member] | ssmt-mfrs:CurrentPortionOfNoncurrentUnsecuredRevolvingCreditAndOthers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r10.c0 | Other unsecured bank loans received/Group [member] | ssmt-mfrs:CurrentPortionOfNoncurrentUnsecuredOtherBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Other unsecured bank loans received/Company [member] | ssmt-mfrs:CurrentPortionOfNoncurrentUnsecuredOtherBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Total current unsecured bank loans received and current portion of non-current unsecured bank loans received/Group [member] | ifrs-full:CurrentUnsecuredBankLoansReceivedAndCurrentPortionOfNoncurrentUnsecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Total current unsecured bank loans received and current portion of non-current unsecured bank loans received/Company [member] | ifrs-full:CurrentUnsecuredBankLoansReceivedAndCurrentPortionOfNoncurrentUnsecuredBankLoansReceived | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r12.c0 | Current portion of secured bonds/sukuk/loan stocks/Group [member] | ssmt-mfrs:CurrentPortionOfSecuredBondsSukukAndLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Current portion of secured bonds/sukuk/loan stocks/Company [member] | ssmt-mfrs:CurrentPortionOfSecuredBondsSukukAndLoanStocks | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r13.c0 | Current portion of unsecured bonds/sukuk/loan stocks/Group [member] | ssmt-mfrs:CurrentPortionOfUnsecuredBondsSukukAndLoanStock | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Current portion of unsecured bonds/sukuk/loan stocks/Company [member] | ssmt-mfrs:CurrentPortionOfUnsecuredBondsSukukAndLoanStock | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r14.c0 | Other current borrowings/Group [member] | ifrs-full:OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Other current borrowings/Company [member] | ifrs-full:OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r15.c0 | Total current borrowings/Group [member] | ifrs-full:CurrentPortionOfLongtermBorrowings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Total current borrowings/Company [member] | ifrs-full:CurrentPortionOfLongtermBorrowings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |