| Changes in fund | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Represents information pertaining to changes in fund during the reporting period. | en | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-mpers-cor_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |
| Represents information pertaining to changes in fund during the reporting period. | en | http://xbrl.ssm.com.my/role/ssm/fs/mpers/lab_rol_ssmt-fs-mpers_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |
| Total changes in fund | en | http://xbrl.ssm.com.my/role/ssm/fs/mpers/lab_rol_ssmt-fs-mpers_2017-12-31/ReportingTotalLabel | http://www.xbrl.org/2003/role/link |