| Cash flows from (used in) decrease (increase) in short-term deposits and investments | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| The cash inflow (outflow) due to a decrease (increase) in short-term deposits and investments. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Net movement in short-term investments and fixed deposits | 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 the aggregate cash flows from net movement in short-term investments and fixed deposits. | 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 |