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 | ssmt-mpers:OtherNoncurrentReceivablesDueFromAssociates | 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:OtherNoncurrentReceivablesDueFromJointVentures | 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:OtherNoncurrentReceivablesDueFromOtherRelatedParties | 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:OtherNoncurrentReceivablesDueFromRelatedParties | 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:OtherNoncurrentReceivablesDueFromHoldingCompany | 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:OtherNoncurrentReceivablesDueFromSubsidiaries | 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:OtherNoncurrentReceivablesDueFromAssociates | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mpers_2017-12-31/ssmt-fs-mpers_2017-12-31_role-210100 |
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