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Operating profit consists of external costs. External costs External costs include administrative, oﬃce, marketing as well as other costs. Other operating income and costs Other operating income and costs include items of a secondary nature compared with the company’s main activities. This includes gains or losses from disposal of non-current assets and divestment of associates. Financial income and costs Financial income and costs include interest and realised and unrealised foreign exchange gains and losses. Income tax for the year The company is jointly taxed with the consolidated entities in the COWI Group, including foreign subsidiaries of COWI Holding A/S. Income tax for the year, consists of current tax for the year, and is recognised in the income statement. Balance sheet Investment in associates Associates are all entities over which the Group has significant but not controlling inﬂuence. 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  <fsa:Equity unitRef="dkk" contextRef="ctx-5" decimals="0">849000</fsa:Equity>
  <fsa:Equity unitRef="dkk" contextRef="ctx-6" decimals="0">-142778</fsa:Equity>
  <fsa:Equity unitRef="dkk" contextRef="ctx-8" decimals="0">706222</fsa:Equity>
  <fsa:ProfitLoss unitRef="dkk" contextRef="ctx-7" decimals="0">-44275</fsa:ProfitLoss>
  <fsa:OtherAdjustmentsOfEquity unitRef="dkk" contextRef="ctx-7" decimals="0">1954</fsa:OtherAdjustmentsOfEquity>
  <fsa:OtherAdjustmentsOfEquity unitRef="dkk" contextRef="ctx-2" decimals="0">1954</fsa:OtherAdjustmentsOfEquity>
  <fsa:Equity unitRef="dkk" contextRef="ctx-9" decimals="0">849000</fsa:Equity>
  <fsa:Equity unitRef="dkk" contextRef="ctx-11" decimals="0">-185099</fsa:Equity>
  <fsa:ProfitLoss unitRef="dkk" contextRef="ctx-12" decimals="0">-42938</fsa:ProfitLoss>
  <fsa:OtherAdjustmentsOfEquity unitRef="dkk" contextRef="ctx-12" decimals="0">-45</fsa:OtherAdjustmentsOfEquity>
  <fsa:OtherAdjustmentsOfEquity unitRef="dkk" contextRef="ctx-1" decimals="0">-45</fsa:OtherAdjustmentsOfEquity>
  <fsa:Equity unitRef="dkk" contextRef="ctx-10" decimals="0">849000</fsa:Equity>
  <fsa:Equity unitRef="dkk" contextRef="ctx-13" decimals="0">-228082</fsa:Equity>
  <fsa:DisclosureOfContributedCapital contextRef="ctx-1" xml:lang="en">The share capital consists of shares of DKK 200,000 class A shares and DKK 649,000 class B shares. The shares consist of shares of each DKK 1,000 or multiples thereof. There have been no changes to the share capital for the last five years. </fsa:DisclosureOfContributedCapital>
  <fsa:DisclosureOfOtherFinanceIncome contextRef="ctx-1" xml:lang="en">DKK 2024 2023 1. Financial income Interest, group companies 3,078 0 Financial income3,078 0 </fsa:DisclosureOfOtherFinanceIncome>
  <fsa:DisclosureOfOtherFinanceExpenses contextRef="ctx-1" xml:lang="en">2. Financial costs Interest, group companies Financial -1,653-1,722costs-1,653-1,722</fsa:DisclosureOfOtherFinanceExpenses>
  <fsa:DisclosureOfTaxExpenses contextRef="ctx-1" xml:lang="en">3. Tax on profit for the year Tax current year 943 436 Adjustment tax prior year 1,330 0 Tax on profit for the year2,273 436 </fsa:DisclosureOfTaxExpenses>
  <fsa:DisclosureOfIncomeIncludingDividendIncomeFromInvestmentsInGroupEnterprisesAndAssociates contextRef="ctx-1" xml:lang="en">4. Investment in associatesName Home Ownership % COWI Tanzania Limited Tanzania 0,045000 COWI India Private India 0,000032 Limited </fsa:DisclosureOfIncomeIncludingDividendIncomeFromInvestmentsInGroupEnterprisesAndAssociates>
  <fsa:DisclosureOfRelatedParties contextRef="ctx-1" xml:lang="en">5. Related parties and ownershipCOWI A/S owns all shares in COMAR Engineers A/S.Apart from usual intercompany transactions and usual management remuneration, no transactions were made during the year with the Board of Directors, the Executive Board, managerial employees, principal shareholders, other group companies or other related parties. In accordance with section 98 C(7) of the Danish Financial Statements Act, transactions with related parties at arm's length have not been disclosed. </fsa:DisclosureOfRelatedParties>
  <fsa:DisclosureOfContingentLiabilities contextRef="ctx-1" xml:lang="en">6. Contingent liabilitiesThe Group's companies are jointly and severally liable for tax on the Group's jointly-taxed income etc. The total amount appears in the annual report for COWI Holding A/S, which is the management company in the joint taxation.</fsa:DisclosureOfContingentLiabilities>
  <fsa:DisclosureOfEmployeeBenefitsExpense contextRef="ctx-1" xml:lang="en">7. Employee conditionsThe company had no paid employees in 2023 and 2024.</fsa:DisclosureOfEmployeeBenefitsExpense>
  <gsd:InformationOnTypeOfSubmittedReport contextRef="ctx-1">Annual report</gsd:InformationOnTypeOfSubmittedReport>
  <cmn:TypeOfAuditorAssistance contextRef="ctx-1">No audit assistance</cmn:TypeOfAuditorAssistance>
  <gsd:ToolForPreparingTheXBRLInstanceDocument contextRef="ctx-1" xml:lang="en">ParsePort XBRL Converter</gsd:ToolForPreparingTheXBRLInstanceDocument>
  <gsd:ReportingPeriodStartDate contextRef="ctx-1">2024-01-01</gsd:ReportingPeriodStartDate>
  <gsd:ReportingPeriodEndDate contextRef="ctx-1">2024-12-31</gsd:ReportingPeriodEndDate>
  <gsd:PrecedingReportingPeriodStartDate contextRef="ctx-1">2023-01-01</gsd:PrecedingReportingPeriodStartDate>
  <gsd:PredingReportingPeriodEndDate contextRef="ctx-1">2023-12-31</gsd:PredingReportingPeriodEndDate>
  <gsd:DateOfGeneralMeeting contextRef="ctx-1">2025-04-04</gsd:DateOfGeneralMeeting>
  <gsd:ReportingPeriodNumber unitRef="pure" contextRef="ctx-1" decimals="0">38</gsd:ReportingPeriodNumber>
  <fsa:ClassOfReportingEntity contextRef="ctx-1">Reporting class B</fsa:ClassOfReportingEntity>
  <gsd:IdentificationNumberCvrOfReportingEntity contextRef="ctx-1">11798691</gsd:IdentificationNumberCvrOfReportingEntity>
  <sob:DateOfApprovalOfAnnualReport contextRef="ctx-1">2025-04-04</sob:DateOfApprovalOfAnnualReport>
  <gsd:IdentificationNumberCvrOfSubmittingEnterprise contextRef="ctx-1">33771231</gsd:IdentificationNumberCvrOfSubmittingEnterprise>
  <gsd:NameOfSubmittingEnterprise contextRef="ctx-1" xml:lang="en">PricewaterhouseCoopers Statsautoriseret Revisionspartnerselskab</gsd:NameOfSubmittingEnterprise>
  <gsd:AddressOfSubmittingEnterpriseStreetAndNumber contextRef="ctx-1" xml:lang="en">Strandvejen 44</gsd:AddressOfSubmittingEnterpriseStreetAndNumber>
  <gsd:AddressOfSubmittingEnterprisePostcodeAndTown contextRef="ctx-1" xml:lang="en">2900 Hellerup</gsd:AddressOfSubmittingEnterprisePostcodeAndTown>
</xbrli:xbrl>