| Name | ReserveOfCashFlowHedges |
|---|---|
| Namespace | http://xbrl.ifrs.org/taxonomy/2017-03-09/ifrs-full |
| Prefix | ifrs-full |
| Data type | xbrli:monetaryItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Reserve of cash flow hedges | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| A component of equity representing the accumulated portion of gain (loss) on a hedging instrument that is determined to be an effective hedge for cash flow hedges. [Refer: Cash flow hedges [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Hedging reserve | 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, as at the reporting date, the aggregate of hedging reserves. Derivatives are financial instruments or other contracts with all three of the following characteristics. a. its value changes in response to the change in a specified interest rate, financial instrument price, commodity price, foreign exchange rate, index of prices or rates, credit rating or credit index, or other variable, provided in the case of a non financial variable that the variable is not specific to a party to the contract (sometimes called the ‘underlying’). b. it requires no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors. c. it is settled at a future date. | 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 |
| Name | Value | Role |
|---|---|---|
| Name | MFRS | http://www.xbrl.org/2003/role/definitionRef |
| Section | 12 | http://www.xbrl.org/2003/role/definitionRef |
| Name | MFRS | http://www.xbrl.org/2003/role/definitionRef |
| Section | 9 | http://www.xbrl.org/2003/role/definitionRef |
| Name | MFRS | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 101.77 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | MFRS | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 101.78 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Subsection | e | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | IAS | http://www.xbrl.org/2009/role/commonPracticeRef |
| Number | 1 | http://www.xbrl.org/2009/role/commonPracticeRef |
| IssueDate | 2017-01-01 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Paragraph | 78 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Subparagraph | e | http://www.xbrl.org/2009/role/commonPracticeRef |
| URI | http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_e&doctype=Standard | http://www.xbrl.org/2009/role/commonPracticeRef |
| URIDate | 2017-03-09 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Note | Effective 2018-01-01 | http://www.xbrl.org/2003/role/disclosureRef |
| Name | IFRS | http://www.xbrl.org/2003/role/disclosureRef |
| Number | 9 | http://www.xbrl.org/2003/role/disclosureRef |
| IssueDate | 2017-01-01 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 6.5.11 | http://www.xbrl.org/2003/role/disclosureRef |
| URI | http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=9&date=2017-03-01&anchor=para_6.5.11&doctype=Standard | http://www.xbrl.org/2003/role/disclosureRef |
| URIDate | 2017-03-09 | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Relation Type | Role | |
|---|---|---|---|
ssmt-mfrs:NondistributableReservesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mfrs_2017-12-31/ssmt-fs-mfrs_2017-12-31_role-200200x | |
ssmt-mfrs:NondistributableReservesAbstract | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mfrs_2017-12-31/ssmt-fs-mfrs_2017-12-31_role-200200y | |
ssmt-mfrs:NondistributableReserves | summation-item | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mfrs_2017-12-31/ssmt-fs-mfrs_2017-12-31_role-200200 | |
ssmt-mfrs:NondistributableReservesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mfrs_2017-12-31/ssmt-fs-mfrs_2017-12-31_role-210100 | |
ssmt-mfrs:NondistributableReservesAbstract | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mfrs_2017-12-31/ssmt-fs-mfrs_2017-12-31_role-220100 |