Name:	ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
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The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Total for all subsidiaries [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 10
-IssueDate 2025-01-01
-Paragraph 22
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=10&code=ifrs-tx-2025-en-r&anchor=para_22&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2025-01-01
-Paragraph 12
-Subparagraph f
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_12_f&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 54
-Subparagraph q
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_q&doctype=Standard
-URIDate 2025-03-27

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Period Type:	instant

Amount of cash consideration payable for acquisition of additional ownership interest in subsidiary.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Number of equity instruments of the reporting entity to be issued as consideration for acquisition of additional ownership interest in subsidiary.

No definition available.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

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The amount of assets less the amount of liabilities attributable to non-controlling interests.

No definition available.

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Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=shmd_SchmidTaiwanLtd.Member
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Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=shmd_SchmidTechnologyGuangdongCo.Ltd.Member
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