| Share-based compensation expense | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Report the value, for the reporting period, of other losses recognized arising from fair value measurement not reported elsewhere in the categories above. | en | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-mfrs-cor_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |
| Report the value, for the reporting period, of other losses recognized arising from fair value measurement not reported elsewhere in the categories above. | 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 |