| r0.c0 | RuleNode_89/Group [member] | | | | ifrs-full:ConsolidatedMember | N/A |
| r0.c1 | RuleNode_89/Company [member] | | | | ifrs-full:SeparateMember | N/A |
| r1.c0 | Employee benefits expense [abstract]/Group [member] | ssmt-mfrs:EmployeeBenefitExpensesAbstract | xbrli:stringItemType | duration | ifrs-full:ConsolidatedMember | N/A |
| r1.c1 | Employee benefits expense [abstract]/Company [member] | ssmt-mfrs:EmployeeBenefitExpensesAbstract | xbrli:stringItemType | duration | ifrs-full:SeparateMember | N/A |
| r2.c0 | Wages, salaries and others/Group [member] | ifrs-full:WagesAndSalaries | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r2.c1 | Wages, salaries and others/Company [member] | ifrs-full:WagesAndSalaries | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r3.c0 | Bonus/Group [member] | ssmt-mfrs:BonusExpenses | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r3.c1 | Bonus/Company [member] | ssmt-mfrs:BonusExpenses | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r4.c0 | Share-based compensation expense/Group [member] | ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r4.c1 | Share-based compensation expense/Company [member] | ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r5.c0 | Share option expenses/Group [member] | ssmt-mfrs:EmployeeShareBasedPayment | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r5.c1 | Share option expenses/Company [member] | ssmt-mfrs:EmployeeShareBasedPayment | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r6.c0 | Social security contributions/Group [member] | ifrs-full:SocialSecurityContributions | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r6.c1 | Social security contributions/Company [member] | ifrs-full:SocialSecurityContributions | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r7.c0 | Defined benefit plans/Group [member] | ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r7.c1 | Defined benefit plans/Company [member] | ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r8.c0 | Defined contribution plans/Group [member] | ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r8.c1 | Defined contribution plans/Company [member] | ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r9.c0 | Other long-term employee benefits/Group [member] | ifrs-full:OtherLongtermBenefits | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r9.c1 | Other long-term employee benefits/Company [member] | ifrs-full:OtherLongtermBenefits | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r10.c0 | Other short-term employee benefits/Group [member] | ifrs-full:OtherShorttermEmployeeBenefits | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r10.c1 | Other short-term employee benefits/Company [member] | ifrs-full:OtherShorttermEmployeeBenefits | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r11.c0 | Other employee expense/Group [member] | ifrs-full:OtherEmployeeExpense | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r11.c1 | Other employee expense/Company [member] | ifrs-full:OtherEmployeeExpense | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |
| r12.c0 | Total employee benefits expense/Group [member] | ssmt-mfrs:EmployeeBenefitsExpenseByNature | xbrli:monetaryItemType | duration | ifrs-full:ConsolidatedMember | iso4217:MYR |
| r12.c1 | Total employee benefits expense/Company [member] | ssmt-mfrs:EmployeeBenefitsExpenseByNature | xbrli:monetaryItemType | duration | ifrs-full:SeparateMember | iso4217:MYR |