| Name | ReserveOfGainsAndLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstrumentsMember |
|---|---|
| Namespace | http://xbrl.ifrs.org/taxonomy/2017-03-09/ifrs-full |
| Prefix | ifrs-full |
| Data type | nonnum:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Reserve of gains and losses on hedging instruments that hedge investments in equity instruments [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for a component of equity representing the accumulated gains and losses on hedging instruments that hedge investments in equity instruments that the entity has designated at fair value through other comprehensive income. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Hedging reserve [member] | 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 |
| This member stands for a component of equity representing 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’). | 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/2009/role/commonPracticeRef |
| Section | 101.85 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | MFRS | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 101.112 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Subsection | c | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | MFRS | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 101.106 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Subsection | d | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | MFRS | http://www.xbrl.org/2003/role/definitionRef |
| Section | 9 | http://www.xbrl.org/2003/role/definitionRef |
| Subsection | A | http://www.xbrl.org/2003/role/definitionRef |
| Note | Effective 2018-01-01 | http://www.xbrl.org/2003/role/exampleRef |
| Name | IAS | http://www.xbrl.org/2003/role/exampleRef |
| Number | 1 | http://www.xbrl.org/2003/role/exampleRef |
| IssueDate | 2017-01-01 | http://www.xbrl.org/2003/role/exampleRef |
| Paragraph | 108 | http://www.xbrl.org/2003/role/exampleRef |
| URI | http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_108&doctype=Standard | http://www.xbrl.org/2003/role/exampleRef |
| URIDate | 2017-03-09 | http://www.xbrl.org/2003/role/exampleRef |
| Name | Relation Type | Role | |
|---|---|---|---|
ssmt-mfrs:OtherNondistributableReserveMember | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mfrs_2017-12-31/ssmt-fs-mfrs_2017-12-31_role-610000 | |
ssmt-mfrs:OtherNondistributableReserveMember | domain-member | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-fs-mfrs_2017-12-31/ssmt-fs-mfrs_2017-12-31_role-610000 |