 | ssmt-mpers:WagesAndSalariesToDirectors | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:BonusToDirectors | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:KeyManagementPersonnelCompensationSharebasedPayment | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:BenefitsInKindExpenses | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:DirectorsFees | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:PerformanceIncentives | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:RetirementBenefitsDefinedBenefitPlans | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:RetirementBenefitsDefinedContributionPlans | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:OtherDirectorsRemuneration | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:DirectorsRemuneration | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200x |
 | ssmt-mpers:WagesAndSalariesToDirectors | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:BonusToDirectors | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:KeyManagementPersonnelCompensationSharebasedPayment | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:BenefitsInKindExpenses | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:DirectorsFees | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:PerformanceIncentives | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:RetirementBenefitsDefinedBenefitPlans | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:RetirementBenefitsDefinedContributionPlans | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:OtherDirectorsRemuneration | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:DirectorsRemuneration | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-300200y |
 | ssmt-mpers:WagesAndSalariesToDirectors | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:BonusToDirectors | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:KeyManagementPersonnelCompensationSharebasedPayment | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:BenefitsInKindExpenses | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:DirectorsFees | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:PerformanceIncentives | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:RetirementBenefitsDefinedBenefitPlans | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:RetirementBenefitsDefinedContributionPlans | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:OtherDirectorsRemuneration | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:DirectorsRemuneration | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-310100 |
 | ssmt-mpers:WagesAndSalariesToDirectors | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:BonusToDirectors | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:KeyManagementPersonnelCompensationSharebasedPayment | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:BenefitsInKindExpenses | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:DirectorsFees | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:PerformanceIncentives | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:RetirementBenefitsDefinedBenefitPlans | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:RetirementBenefitsDefinedContributionPlans | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:OtherDirectorsRemuneration | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |
 | ssmt-mpers:DirectorsRemuneration | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-320100 |