| Total employee benefits expense, by nature | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Employee benefits expenses, by nature | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Report the value, for the reporting period, of employee benefits expenses which refers to all forms of consideration given by an entity in exchange for service rendered by employees or for the termination of employment. | en | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-mfrs-cor_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |