| Name | NumberOfSharesIssuedAsAtAnnualReturn |
|---|---|
| Namespace | http://xbrl.ssm.com.my/taxonomy/2017-12-31/ssmt-cor |
| Prefix | ssmt |
| Data type | xbrli:sharesItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Number of shares issued as at annual return | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total number of shares issues as at annual return (exclude number of forfeited and treasury shares) | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| en | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-cor_2017-12-31/ReportingDocumentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Name | http://www.xbrl.org/2003/role/disclosureRef | |
| Number | http://www.xbrl.org/2003/role/disclosureRef | |
| Section | http://www.xbrl.org/2003/role/disclosureRef | |
| Subsection | http://www.xbrl.org/2003/role/disclosureRef | |
| Paragraph | http://www.xbrl.org/2003/role/disclosureRef | |
| IssueDate | http://www.xbrl.org/2003/role/disclosureRef | |
| Subparagraph | http://www.xbrl.org/2003/role/disclosureRef |