 | ifrs-smes:PropertyPlantAndEquipmentAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:InvestmentPropertyAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:IntangibleAssetsAndGoodwillAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:InvestmentsInSubsidiariesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:InvestmentsInAssociatesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:InvestmentsInJointVentureAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:NoncurrentReceivablesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:InventoriesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:TradeAndOtherCurrentReceivablesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:CashAndCashEquivalentsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:IssuedCapitalAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:OtherReservesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:OtherComponentsOfEquityAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:NoncurrentBorrowingsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:NoncurrentEmployeeBenefitLiabilitiesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:NoncurrentProvisionsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:NoncurrentPayablesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:CurrentBorrowingsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ssmt-mpers:CurrentEmployeeBenefitLiabilitiesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:CurrentProvisionsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:TradeAndOtherCurrentPayablesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200x |
 | ifrs-smes:PropertyPlantAndEquipmentAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:InvestmentPropertyAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ifrs-smes:IntangibleAssetsAndGoodwillAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:InvestmentsInSubsidiariesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:InvestmentsInAssociatesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:InvestmentsInJointVentureAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:InventoriesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ifrs-smes:CashAndCashEquivalentsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:IssuedCapitalAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ifrs-smes:OtherReservesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:OtherComponentsOfEquityAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ifrs-smes:TradeAndOtherReceivablesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:BorrowingsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ssmt-mpers:EmployeeBenefitLiabilitiesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ifrs-smes:ProvisionsAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ifrs-smes:TradeAndOtherPayablesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-200200y |
 | ifrs-smes:PropertyPlantAndEquipmentAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:InvestmentPropertyAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:IntangibleAssetsAndGoodwillAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:InvestmentsInSubsidiariesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:InvestmentsInAssociatesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:InvestmentsInJointVentureAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:InventoriesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:CashAndCashEquivalentsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:IssuedCapitalAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:OtherReservesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:OtherComponentsOfEquityAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:NoncurrentReceivablesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:TradeAndOtherCurrentReceivablesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:NoncurrentBorrowingsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:NoncurrentEmployeeBenefitLiabilitiesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:NoncurrentProvisionsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:NoncurrentPayablesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:CurrentBorrowingsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ssmt-mpers:CurrentEmployeeBenefitLiabilitiesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:CurrentProvisionsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:TradeAndOtherCurrentPayablesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
 | ifrs-smes:PropertyPlantAndEquipmentAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:InvestmentPropertyAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ifrs-smes:IntangibleAssetsAndGoodwillAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:InvestmentsInSubsidiariesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:InvestmentsInAssociatesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:InvestmentsInJointVentureAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:InventoriesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ifrs-smes:CashAndCashEquivalentsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:IssuedCapitalAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ifrs-smes:OtherReservesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:OtherComponentsOfEquityAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ifrs-smes:TradeAndOtherReceivablesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:BorrowingsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ssmt-mpers:EmployeeBenefitLiabilitiesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ifrs-smes:ProvisionsAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |
 | ifrs-smes:TradeAndOtherPayablesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-220100 |