| Adjustments for allowance for doubtful debts | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Allowance for doubtful debts | en | http://xbrl.ssm.com.my/role/ssm/fs/mfrs/lab_rol_ssmt-fs-mfrs_2017-12-31/ReportingLabel | http://www.xbrl.org/2003/role/link |
| Report the value, for the reporting period, of adjustment for allowance for doubtful debts which refer to the amount of money that a business does not expect to collect from its clients to reconcile surplus (deficit) to net cash flow from (used in) operating activities. | en | http://xbrl.ssm.com.my/role/ssm/fs/mfrs/lab_rol_ssmt-fs-mfrs_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |