| Other transactions, change in fund and reserves | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Represents information pertaining to increase (decrease) through transfers and other changes in fund during the reporting period. | en | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-mfrs-cor_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |
| Represents information pertaining to increase (decrease) through transfers and other changes in fund during the reporting period. | en | http://xbrl.ssm.com.my/role/ssm/fs/clbg/lab_rol_ssmt-fs-clbg_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |