| r0.c0 | RuleNode_206/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_206/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Trade and other non-current payables [abstract]/Group [member] | ifrs-full:NoncurrentPayablesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Trade and other non-current payables [abstract]/Company [member] | ifrs-full:NoncurrentPayablesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Non-current trade payables [abstract]/Group [member] | ssmt-mfrs:NoncurrentTradePayablesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r2.c1 | Non-current trade payables [abstract]/Company [member] | ssmt-mfrs:NoncurrentTradePayablesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r3.c0 | Trade payables/Group [member] | ssmt-mfrs:NoncurrentTradePayablesDueToCustomers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Trade payables/Company [member] | ssmt-mfrs:NoncurrentTradePayablesDueToCustomers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r4.c0 | Trade payables due to related parties/Group [member] | ssmt-mfrs:NoncurrentTradePayablesDueToOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Trade payables due to related parties/Company [member] | ssmt-mfrs:NoncurrentTradePayablesDueToOtherRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r5.c0 | Other non-current trade payables/Group [member] | ssmt-mfrs:OtherNoncurrentTradePayables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Other non-current trade payables/Company [member] | ssmt-mfrs:OtherNoncurrentTradePayables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Total non-current trade payables/Group [member] | ifrs-full:NoncurrentPayablesToTradeSuppliers | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Total non-current trade payables/Company [member] | ifrs-full:NoncurrentPayablesToTradeSuppliers | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Non-current other payables [abstract]/Group [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r7.c1 | Non-current other payables [abstract]/Company [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToRelatedPartiesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r8.c0 | Other payables due to related parties/Group [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToRelatedCompanies | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Other payables due to related parties/Company [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToRelatedCompanies | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r9.c0 | Other payables due to trustees/Group [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToTrustees | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Other payables due to trustees/Company [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToTrustees | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r10.c0 | Total non-current other payables due to related parties/Group [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Total non-current other payables due to related parties/Company [member] | ssmt-mfrs:OtherNoncurrentPayablesDueToRelatedParties | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Non -current non-trade payables[abstract]/Group [member] | ssmt-mfrs:NoncurrentNontradePayablesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r11.c1 | Non -current non-trade payables[abstract]/Company [member] | ssmt-mfrs:NoncurrentNontradePayablesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r12.c0 | Deferred income/Group [member] | ssmt-mfrs:NoncurrentNontradeDeferredIncome | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Deferred income/Company [member] | ssmt-mfrs:NoncurrentNontradeDeferredIncome | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r13.c0 | Accruals/Group [member] | ssmt-mfrs:NoncurrentNontradeAccruals | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r13.c1 | Accruals/Company [member] | ssmt-mfrs:NoncurrentNontradeAccruals | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r14.c0 | Retention payables/Group [member] | ssmt-mfrs:NoncurrentNontradeRetentionPayables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r14.c1 | Retention payables/Company [member] | ssmt-mfrs:NoncurrentNontradeRetentionPayables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r15.c0 | Deposits and advanced billings/Group [member] | ssmt-mfrs:NoncurrentNontradeDepositsAndAdvancedBillings | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r15.c1 | Deposits and advanced billings/Company [member] | ssmt-mfrs:NoncurrentNontradeDepositsAndAdvancedBillings | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r16.c0 | Other non-current non-trade payables/Group [member] | ssmt-mfrs:OtherNoncurrentNontradePayables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r16.c1 | Other non-current non-trade payables/Company [member] | ssmt-mfrs:OtherNoncurrentNontradePayables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r17.c0 | Total non-current non-trade payables/Group [member] | ssmt-mfrs:NoncurrentNontradePayables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r17.c1 | Total non-current non-trade payables/Company [member] | ssmt-mfrs:NoncurrentNontradePayables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r18.c0 | Other non-current payables/Group [member] | ifrs-full:OtherNoncurrentPayables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r18.c1 | Other non-current payables/Company [member] | ifrs-full:OtherNoncurrentPayables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |
| r19.c0 | Total trade and other non-current payables/Group [member] | ifrs-full:NoncurrentPayables | xbrli:monetaryItemType | instant | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r19.c1 | Total trade and other non-current payables/Company [member] | ifrs-full:NoncurrentPayables | xbrli:monetaryItemType | instant | ifrs-full:SeparateMember | iso4217:MYR |