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   <gsd:InformationOnTypeOfSubmittedReport contextRef="ctx-2" id="id-9h1lohj7ujg">Annual report</gsd:InformationOnTypeOfSubmittedReport>
   <gsd:DateOfGeneralMeeting contextRef="ctx-2" id="id-5kqa9i0g9ud">2025-09-15</gsd:DateOfGeneralMeeting>
   <gsd:NameAndSurnameOfChairmanOfGeneralMeeting contextRef="ctx-2" id="id-z0rcpnlldkg" xml:lang="en">Wai Ming Teng</gsd:NameAndSurnameOfChairmanOfGeneralMeeting>
   <gsd:AddressOfAuditorStreetName contextRef="ctx-1" id="id-wlo2oegs7x" xml:lang="en">Dampfærgevej 28
</gsd:AddressOfAuditorStreetName>
   <gsd:AddressOfAuditorDistrictName contextRef="ctx-1" id="id-u9d15p8ykjp" xml:lang="en">2100 Copenhagen</gsd:AddressOfAuditorDistrictName>
   <sob:IdentificationOfApprovedAnnualReport contextRef="ctx-2" id="id-zj648o5j79s" xml:lang="en">The Board of Directors and the Executive Board have today considered and approved the annual report of BT Denmark ApS for the financial year 01.04.2024 - 31.03.2025.</sob:IdentificationOfApprovedAnnualReport>
   <sob:ConfirmationThatAnnualReportIsPresentedInAccordanceWithRequirementsProvidedForByLegislationAnyStandardsAndRequirementsProvidedByArticlesOfAssociationOrByAgreement contextRef="ctx-2" id="id-mstxpkzhy0n" xml:lang="en">The annual report is presented in accordance with the Danish Financial Statements Act.</sob:ConfirmationThatAnnualReportIsPresentedInAccordanceWithRequirementsProvidedForByLegislationAnyStandardsAndRequirementsProvidedByArticlesOfAssociationOrByAgreement>
   <sob:ConfirmationThatFinancialStatementGivesTrueAndFairViewOfAssetsLiabilitiesEquityFinancialPositionAndResults contextRef="ctx-2" id="id-a4j4ejh1ah8" xml:lang="en">In our opinion, the financial statements give a true and fair view of the Entity’s financial position at 31.03.2025and of the results of its operations for the financial year 01.04.2024 - 31.03.2025.</sob:ConfirmationThatFinancialStatementGivesTrueAndFairViewOfAssetsLiabilitiesEquityFinancialPositionAndResults>
   <sob:ManagementsStatementAboutManagementsReview contextRef="ctx-2" id="id-8hf36vw0krb" xml:lang="en">We believe that the management commentary contains a fair review of the affairs and conditions referred to therein.</sob:ManagementsStatementAboutManagementsReview>
   <sob:RecommendationForApprovalOfAnnualReportByGeneralMeeting contextRef="ctx-2" id="id-o2xyfvijk3" xml:lang="en">We recommend the annual report for adoption at the Annual General Meeting.</sob:RecommendationForApprovalOfAnnualReportByGeneralMeeting>
   <sob:PlaceOfSignatureOfStatement contextRef="ctx-2" id="id-xuk6wr13o5e" xml:lang="en">Copenhagen</sob:PlaceOfSignatureOfStatement>
   <cmn:NameAndSurnameOfMemberOfExecutiveBoard contextRef="ctx-3" id="id-x1y0aoutiwo" xml:lang="en">Wai Ming Teng</cmn:NameAndSurnameOfMemberOfExecutiveBoard>
   <cmn:TitleOfMemberOfExecutiveBoard contextRef="ctx-3" id="id-ch48klokkzq" xml:lang="en">CEO</cmn:TitleOfMemberOfExecutiveBoard>
   <cmn:NameAndSurnameOfMemberOfSupervisoryBoard contextRef="ctx-4" id="id-6f1e0nwgi5i" xml:lang="en">Marit Anke Wilhelmina Cremers-Wit</cmn:NameAndSurnameOfMemberOfSupervisoryBoard>
   <cmn:NameAndSurnameOfMemberOfSupervisoryBoard contextRef="ctx-5" id="id-evool6gfi7b" xml:lang="en">Wai Ming Teng</cmn:NameAndSurnameOfMemberOfSupervisoryBoard>
   <cmn:NameAndSurnameOfMemberOfSupervisoryBoard contextRef="ctx-6" id="id-2dtxlqwqlcu" xml:lang="en">Rasmus Johannes Junge</cmn:NameAndSurnameOfMemberOfSupervisoryBoard>
   <arr:AddresseeOfAuditorsReportOnAuditedFinancialStatements contextRef="ctx-2" id="id-ahgewzudon7" xml:lang="en">To the shareholders of BT Denmark ApS</arr:AddresseeOfAuditorsReportOnAuditedFinancialStatements>
   <arr:OpinionOnAuditedFinancialStatements contextRef="ctx-2" id="id-cj06g78xbw8" xml:lang="en">We have audited the financial statements of BT Denmark ApS for the financial year01.04.2024 - 
 ​31.03.2025, which comprise the income statement, balance sheet, statement of changes in equity and
 ​notes, including a
 summary of significant accounting policies. The financial statements are prepared in 
accordance with the
 Danish Financial Statements Act.​​
​​In our opinion, the financial statements give a true and fair view of the Entity’s financial position at31.03.2025and of the results of its operations for the financial year 01.04.2024 - 31.03.2025  in accordance
 with the Danish Financial Statements Act.</arr:OpinionOnAuditedFinancialStatements>
   <arr:DescriptionOfQualificationsOfAuditedFinancialStatements contextRef="ctx-2" id="id-tu82sin5f5d" xml:lang="en">We conducted our audit in accordance with International Standards on Auditing (ISAs) and additional requirements
 applicable in Denmark. Our responsibilities under those standards and requirements are further
​described in the "Auditor’s responsibilities for the audit of the financial statements" section of this auditor’s
 report. We are independent of the Entity in accordance with the International Ethics Standards Board for 
​Accountants’ International Code of Ethics for Professional Accountants (IESBA Code) and the additional ethical 
​requirements applicable in Denmark, and we have fulfilled our other ethical responsibilities in accordance with 
​these requirements and the IESBA Code. We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis
 for our opinion.</arr:DescriptionOfQualificationsOfAuditedFinancialStatements>
   <arr:StatementOfExecutiveAndSupervisoryBoardsResponsibilityForFinancialStatements contextRef="ctx-2" id="id-q45o7ozlmxq" xml:lang="en">Management is responsible for the preparation of financial statements that give a true and fair view in accordance
 with the Danish Financial Statements Act, and for such internal control as Management determines
​is necessary to enable the preparation of financial statements that are free from material misstatement,
​whether due to fraud or error.​​In preparing the financial statements, Management is responsible for assessing the Entity’s ability to continue
​as a going concern, for disclosing, as applicable, matters related to going concern, and for using the going
​concern basis of accounting in preparing the financial statements unless Management either intends to liquidate
​the Entity or to cease operations, or has no realistic alternative but to do so.</arr:StatementOfExecutiveAndSupervisoryBoardsResponsibilityForFinancialStatements>
   <arr:StatementOfAuditorsResponsibilityForAuditAndAuditPerformed contextRef="ctx-2" id="id-kq6j546rm4n-1" xml:lang="en">Our objectives are to obtain reasonable assurance about whether the financial statements as a whole are
​free from material misstatement, whether due to fraud or error, and to issue an auditor’s report that includes
​our opinion. Reasonable assurance is a high level of assurance, but is not a guarantee that an audit conducted
​in accordance with ISAs and the additional requirements applicable in Denmark will always detect a material
​misstatement when it exists. Misstatements can arise from fraud or error and are considered material if,
​individually or in the aggregate, they could reasonably be expected to influence the economic decisions of
​users taken on the basis of these financial statements.​​​​As part of an audit conducted in accordance with ISAs and the additional requirements applicable in Denmark,
​we exercise professional judgement and maintain professional scepticism throughout the audit. We also:Identify and assess the risks of material misstatement of the financial statements, whether due to
​fraud or error, design and perform audit procedures responsive to those risks, and obtain audit evidence
​that is sufficient and appropriate to provide a basis for our opinion. The risk of not detecting a
​material misstatement resulting from fraud is higher than for one resulting from error, as fraud may
​involve collusion, forgery, intentional omissions, misrepresentations, or the override of internal control.​Obtain an understanding of internal control relevant to the audit in order to design audit procedures
​that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the
​effectiveness of the Entity’s internal control.​Evaluate the appropriateness of accounting policies used and the reasonableness of accounting estimates
​and related disclosures made by Management.
​Conclude on the appropriateness of Management’s use of the going concern basis of accounting in
​preparing the financial statements, and, based on the audit evidence obtained, whether a material
​uncertainty exists related to events or conditions that may cast significant doubt on the Entity’s ability to continue as a going concern. If we conclude that a material uncertainty exists, we are required to
​draw attention in our auditor’s report to the related disclosures in the financial statements or, if such
​disclosures are inadequate, to modify our opinion. Our conclusions are based on the audit evidence
​obtained up to the date of our auditor’s report. However, future events or conditions may cause the
​Entity to cease to continue as a going concern.​Evaluate the overall presentation, structure and content of the financial statements, including the disclosures
​in the notes, and whether the financial statements represent the underlying transactions and
​events in a manner that gives a true and fair view.We communicate with those charged with governance regarding, among other matters, the planned scope
​and timing of the audit and significant audit findings, including any significant deficiencies in internal control
​that we identify during our audit.</arr:StatementOfAuditorsResponsibilityForAuditAndAuditPerformed>
   <arr:StatementOnManagementsReviewAuditorsReportOnAuditedFinancialStatements contextRef="ctx-2" id="id-ndjopp3wyxf-1" xml:lang="en">Management is responsible for the management commentary.
​​Our opinion on the financial statements does not cover the management commentary, and we do not express
​any form of assurance conclusion thereon.
​​In connection with our audit of the financial statements, our responsibility is to read the management
​commentary and, in doing so, consider whether the management commentary is materially inconsistent with
​the financial statements or our knowledge obtained in the audit or otherwise appears to be materially
 misstated.
​​Moreover, it is our responsibility to consider whether the management commentary provides the information
​required under the Danish Financial Statements Act.​​​Based on the work we have performed, we conclude that the management commentary is in accordance with
​the financial statements and has been prepared in accordance with the requirements of the Danish Financial
​Statements Act. We did not identify any material misstatement of the management commentary.</arr:StatementOnManagementsReviewAuditorsReportOnAuditedFinancialStatements>
   <arr:SignatureOfAuditorsPlace contextRef="ctx-2" id="id-s1x0f5ersy" xml:lang="en">Copenhagen</arr:SignatureOfAuditorsPlace>
   <cmn:NameOfAuditFirm contextRef="ctx-1" id="id-mz1z0slxqu9" xml:lang="en">KPMG Statsautoriseret Revisionspartnerselskab </cmn:NameOfAuditFirm>
   <cmn:NameOfAuditFirm contextRef="ctx-7" id="id-yh6rnicoikc" xml:lang="en">KPMG Statsautoriseret Revisionspartnerselskab </cmn:NameOfAuditFirm>
   <cmn:IdentificationNumberCvrOfAuditFirm contextRef="ctx-1" id="id-lntfprd5s1">25578198</cmn:IdentificationNumberCvrOfAuditFirm>
   <cmn:IdentificationNumberCvrOfAuditFirm contextRef="ctx-7" id="id-f6jk92ypn">25578198</cmn:IdentificationNumberCvrOfAuditFirm>
   <cmn:NameAndSurnameOfAuditor contextRef="ctx-1" id="id-wqq9ivjcrs" xml:lang="en">Kenn Wolff Hansen</cmn:NameAndSurnameOfAuditor>
   <cmn:DescriptionOfAuditor contextRef="ctx-1" id="id-vu1y6qsy6" xml:lang="en">State Authorised Public Accountant</cmn:DescriptionOfAuditor>
   <cmn:IdentificationNumberOfAuditor contextRef="ctx-1" id="id-4fihfd7juqn">mne30154</cmn:IdentificationNumberOfAuditor>
   <cmn:NameAndSurnameOfAuditor contextRef="ctx-7" id="id-qdh0nzxlp1l" xml:lang="en">Jesper Brostrøm Teidor Bihlet</cmn:NameAndSurnameOfAuditor>
   <cmn:DescriptionOfAuditor contextRef="ctx-7" id="id-gp0ev0smq5v" xml:lang="en">State Authorised Public Accountant</cmn:DescriptionOfAuditor>
   <cmn:IdentificationNumberOfAuditor contextRef="ctx-7" id="id-9ua90pwgrxc">mne51063</cmn:IdentificationNumberOfAuditor>
   <mrv:DescriptionOfPrimaryActivitiesOfEntity contextRef="ctx-2" id="id-bsxtui9jq7s" xml:lang="en">Primary activitiesThe company's business comprised of offering telecommunication and network security services to major corporate customers in the Danish market.</mrv:DescriptionOfPrimaryActivitiesOfEntity>
   <mrv:DescriptionOfDevelopmentInActivitiesAndFinancialAffairs contextRef="ctx-2" id="id-d6img7q7j97" xml:lang="en">Development in activities and financesBT Denmark ApS reported total revenues of 45 million DKK for the financial year 2024/25, marking a notable increase from 37 million DKK in 2023/24.
​
​External revenues rose significantly to 30 million DKK, up from 16.6 million DKK in the previous year. This growth was primarily driven by expanded business with existing clients and new contracts signed with key players in the mechanical engineering sector.
​
​In particular, managed network contracts in the mechanical engineering industry contributed 21.5 million DKK to the overall revenue, reflecting a strategic shift in focus and successful execution of large-scale infrastructure projects.
</mrv:DescriptionOfDevelopmentInActivitiesAndFinancialAffairs>
   <mrv:DescriptionOfExpectedDevelopment contextRef="ctx-2" id="id-jzuucgagqnm" xml:lang="en">OutlookThe financial year 2025/26 is expected to be shaped by continued transformation in the global ICT landscape, including price pressures and market consolidation. Despite these challenges, BT Denmark ApS anticipates maintaining a stable revenue level, supported by long-term contracts and ongoing demand in the mechanical engineering sector.
​
​Profitability is expected to remain in line with the financial year 2024/25, with a focus on operational efficiency and strategic customer engagement.
</mrv:DescriptionOfExpectedDevelopment>
   <mrv:DescriptionOfSignificantEventsOccurringAfterEndOfReportingPeriod contextRef="ctx-2" id="id-70h4wtfamlr" xml:lang="en">Events after the balance sheet dateNo events of significance to the annual report have occurred after the balance sheet date. </mrv:DescriptionOfSignificantEventsOccurringAfterEndOfReportingPeriod>
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                                          id="id-1bezstj00st"
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                                          decimals="0"
                                          id="id-wbbohr7uhd"
                                          unitRef="dkk">7056888</fsa:FixturesFittingsToolsAndEquipment>
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                                  decimals="0"
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                                  unitRef="dkk">4228572</fsa:PropertyPlantAndEquipment>
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                                  id="id-zkcgprgcw5g"
                                  unitRef="dkk">8882978</fsa:ShorttermTradeReceivables>
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                                  decimals="0"
                                  id="id-ucg9tx6f7c8"
                                  unitRef="dkk">5373687</fsa:ShorttermTradeReceivables>
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                                 id="id-45pzd06iou4"
                                 unitRef="dkk">1220753</fsa:CurrentDeferredTaxAssets>
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                                 unitRef="dkk">919161</fsa:CurrentDeferredTaxAssets>
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                                  decimals="0"
                                  id="id-llrsolsamn"
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                             decimals="0"
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                             unitRef="dkk">13934832</fsa:ShorttermReceivables>
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               id="id-t84piqde9n"
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               decimals="0"
               id="id-5qahncwfn49"
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                           decimals="0"
                           id="id-x096tnu553"
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                           decimals="0"
                           id="id-6w14350k3k2"
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                         decimals="0"
                         id="id-fqstd2rw5kk"
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                         decimals="0"
                         id="id-7j4cfct3pv"
                         unitRef="dkk">7299733</fsa:RetainedEarnings>
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               decimals="0"
               id="id-9lc79bonlsi"
               unitRef="dkk">8527454</fsa:Equity>
   <fsa:Equity contextRef="ctx-11"
               decimals="0"
               id="id-44o01tu5meu"
               unitRef="dkk">7436797</fsa:Equity>
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                               decimals="0"
                               id="id-wti1ktvsqp"
                               unitRef="dkk">0</fsa:LongtermDeferredIncome>
   <fsa:LongtermDeferredIncome contextRef="ctx-11"
                               decimals="0"
                               id="id-ene671i6iy"
                               unitRef="dkk">11603</fsa:LongtermDeferredIncome>
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                                               decimals="0"
                                               id="id-ts0ujjfz41"
                                               unitRef="dkk">0</fsa:LongtermLiabilitiesOtherThanProvisions>
   <fsa:LongtermLiabilitiesOtherThanProvisions contextRef="ctx-11"
                                               decimals="0"
                                               id="id-3yb0kdiqpsu"
                                               unitRef="dkk">11603</fsa:LongtermLiabilitiesOtherThanProvisions>
   <fsa:ShorttermTradePayables contextRef="ctx-8"
                               decimals="0"
                               id="id-b7lc0qnjcb"
                               unitRef="dkk">3270908</fsa:ShorttermTradePayables>
   <fsa:ShorttermTradePayables contextRef="ctx-11"
                               decimals="0"
                               id="id-ie4elgnfpzi"
                               unitRef="dkk">1461702</fsa:ShorttermTradePayables>
   <fsa:ShorttermPayablesToGroupEnterprises contextRef="ctx-8"
                                            decimals="0"
                                            id="id-c3wko5lgmwp"
                                            unitRef="dkk">7604244</fsa:ShorttermPayablesToGroupEnterprises>
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                                            decimals="0"
                                            id="id-hl5l8aqkblb"
                                            unitRef="dkk">10463586</fsa:ShorttermPayablesToGroupEnterprises>
   <fsa:ShorttermTaxPayables contextRef="ctx-8"
                             decimals="0"
                             id="id-dckpsocl3u"
                             unitRef="dkk">527292</fsa:ShorttermTaxPayables>
   <fsa:ShorttermTaxPayables contextRef="ctx-11"
                             decimals="0"
                             id="id-mp9k0o9jwli"
                             unitRef="dkk">176348</fsa:ShorttermTaxPayables>
   <fsa:OtherPayablesIncludingTaxPayablesLiabilitiesOtherThanProvisionsShortterm contextRef="ctx-8"
                                                                                 decimals="0"
                                                                                 id="id-hj96ix89fne"
                                                                                 unitRef="dkk">173505</fsa:OtherPayablesIncludingTaxPayablesLiabilitiesOtherThanProvisionsShortterm>
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                                                                                 decimals="0"
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                                                                                 unitRef="dkk">159447</fsa:OtherPayablesIncludingTaxPayablesLiabilitiesOtherThanProvisionsShortterm>
   <fsa:ShorttermDeferredIncome contextRef="ctx-8"
                                decimals="0"
                                id="id-u3ec6zv4roh"
                                unitRef="dkk">652343</fsa:ShorttermDeferredIncome>
   <fsa:ShorttermDeferredIncome contextRef="ctx-11"
                                decimals="0"
                                id="id-nwtbk40geq"
                                unitRef="dkk">1282237</fsa:ShorttermDeferredIncome>
   <fsa:ShorttermLiabilitiesOtherThanProvisions contextRef="ctx-8"
                                                decimals="0"
                                                id="id-w909lxml28e"
                                                unitRef="dkk">12228292</fsa:ShorttermLiabilitiesOtherThanProvisions>
   <fsa:ShorttermLiabilitiesOtherThanProvisions contextRef="ctx-11"
                                                decimals="0"
                                                id="id-4ul9pggc3i"
                                                unitRef="dkk">13543320</fsa:ShorttermLiabilitiesOtherThanProvisions>
   <fsa:LiabilitiesOtherThanProvisions contextRef="ctx-8"
                                       decimals="0"
                                       id="id-tqak20946x"
                                       unitRef="dkk">12228292</fsa:LiabilitiesOtherThanProvisions>
   <fsa:LiabilitiesOtherThanProvisions contextRef="ctx-11"
                                       decimals="0"
                                       id="id-wlp1p3wmehh"
                                       unitRef="dkk">13554923</fsa:LiabilitiesOtherThanProvisions>
   <fsa:LiabilitiesAndEquity contextRef="ctx-8"
                             decimals="0"
                             id="id-pojnubfl2cd"
                             unitRef="dkk">20755746</fsa:LiabilitiesAndEquity>
   <fsa:LiabilitiesAndEquity contextRef="ctx-11"
                             decimals="0"
                             id="id-dwtbzhuqz1a"
                             unitRef="dkk">20991720</fsa:LiabilitiesAndEquity>
   <fsa:Equity contextRef="ctx-9"
               decimals="0"
               id="id-wajq4bmu8m"
               unitRef="dkk">137064</fsa:Equity>
   <fsa:Equity contextRef="ctx-10"
               decimals="0"
               id="id-nybtyahex3"
               unitRef="dkk">7299733</fsa:Equity>
   <fsa:Equity contextRef="ctx-11"
               decimals="0"
               id="id-jln5anazb5"
               unitRef="dkk">7436797</fsa:Equity>
   <fsa:ProfitLoss contextRef="ctx-12"
                   decimals="0"
                   id="id-upx3nrf6f2s"
                   unitRef="dkk">1090657</fsa:ProfitLoss>
   <fsa:ProfitLoss contextRef="ctx-2"
                   decimals="0"
                   id="id-768493uv6kg"
                   unitRef="dkk">1090657</fsa:ProfitLoss>
   <fsa:Equity contextRef="ctx-13"
               decimals="0"
               id="id-kplf919smgr"
               unitRef="dkk">137064</fsa:Equity>
   <fsa:Equity contextRef="ctx-14"
               decimals="0"
               id="id-4xgdqm7st8m"
               unitRef="dkk">8390390</fsa:Equity>
   <fsa:Equity contextRef="ctx-8"
               decimals="0"
               id="id-w92mirfnyui"
               unitRef="dkk">8527454</fsa:Equity>
   <fsa:DisclosureOfOtherFinanceIncome contextRef="ctx-2" id="id-xaamxrp8dz" xml:lang="en">1 Other financial income
​2024/25​DKK2023/24​DKKOther interest income4,2776,234Exchange rate adjustments41,628045,9056,234</fsa:DisclosureOfOtherFinanceIncome>
   <fsa:DisclosureOfOtherFinanceExpenses contextRef="ctx-2" id="id-0mztkpl43k5" xml:lang="en">2 Other financial expenses2024/25​DKK2023/24​DKKFinancial expenses from group enterprises384,003332,153Other interest expenses117,341126,986Exchange rate adjustments117,524113,418618,868572,557</fsa:DisclosureOfOtherFinanceExpenses>
   <fsa:DisclosureOfTaxExpenses contextRef="ctx-2" id="id-9c3tttdp37" xml:lang="en">3 Tax on profit/loss for the year2024/25​DKK2023/24​DKKCurrent tax609,378313,436Change in deferred tax(301,592)(80,282)307,786233,154</fsa:DisclosureOfTaxExpenses>
   <fsa:DisclosureOfPropertyPlantAndEquipment contextRef="ctx-2" id="id-kj81orfo29" xml:lang="en">4 Property, plant and equipmentOther fixtures and fittings, tools and equipment​DKKCost beginning of year33,429,183Additions1,793,570Disposals(7,294,214)Cost end of year27,928,539Depreciation and impairment losses beginning of year(26,372,295)Depreciation for the year(4,621,886)Reversal regarding disposals7,294,214Depreciation and impairment losses end of year(23,699,967)Carrying amount end of year4,228,572</fsa:DisclosureOfPropertyPlantAndEquipment>
   <fsa:DisclosureOfEmployeeBenefitsExpense contextRef="ctx-2" id="id-mcyhfadoi4n" xml:lang="en">5 EmployeesThe Entity has no employees other than the Executive Board. The Executive Officer has not received any 
​​​remuneration.  </fsa:DisclosureOfEmployeeBenefitsExpense>
   <fsa:InformationOnConsolidatedFinancialStatements contextRef="ctx-2" id="id-qo0iterj4ej" xml:lang="en">6 Group relationsName and registered office of the Parent preparing consolidated financial statements for the smallest group:​British Telecommunications Plc, 1 Braham Street, London, United Kingdom, E1 8EE</fsa:InformationOnConsolidatedFinancialStatements>
   <fsa:InformationOnReportingClassOfEntity contextRef="ctx-2" id="id-xf7wxmqzfl9" xml:lang="en">This annual report has been presented in accordance with the provisions of the Danish Financial Statements
​Act governing reporting class B enterprises with addition of a few provisions for reporting class C.The accounting policies applied to these financial statements are consistent with those applied last year.</fsa:InformationOnReportingClassOfEntity>
   <fsa:DescriptionOfGeneralMattersRelatedToRecognitionMeasurementAndChangesInAccountingPolicies contextRef="ctx-2" id="id-0avx5swzc7yl" xml:lang="en">Recognition and measurementAssets are recognised in the balance sheet when it is probable as a result of a prior event that future economic
​benefits will flow to the Entity, and the value of the asset can be measured reliably.
​​Liabilities are recognised in the balance sheet when the Entity has a legal or constructive obligation as a
​result of a prior event, and it is probable that future economic benefits will flow out of the Entity, and the
​value of the liability can be measured reliably.
​​On initial recognition, assets and liabilities are measured at cost. Measurement subsequent to initial
​recognition is effected as described below for each financial statement item.
​​Anticipated risks and losses that arise before the time of presentation of the annual report and that confirm
​or invalidate affairs and conditions existing at the balance sheet date are considered at recognition and
​measurement.
​​Income is recognised in the income statement when earned, whereas costs are recognised by the amounts
​attributable to this financial year.</fsa:DescriptionOfGeneralMattersRelatedToRecognitionMeasurementAndChangesInAccountingPolicies>
   <fsa:DescriptionOfMethodsOfForeignCurrencies contextRef="ctx-2" id="id-z4ofodentek" xml:lang="en">Foreign currency translationOn initial recognition, foreign currency transactions are translated applying the exchange rate at the
 transaction date. Receivables, payables and other monetary items denominated in foreign currencies that
 have not been settled at the balance sheet date are translated using the exchange rate at the balance
 sheet date. Exchange differences that arise between the rate at the transaction date and the rate in effect
 at the payment date, or the rate at the balance sheet date, are recognised in the income statement as
 financial income or financial expenses. ​  Property, plant and equipment, intangible assets, inventories and
 other non-monetary assets that have been purchased in foreign currencies are translated using historical
 rates.</fsa:DescriptionOfMethodsOfForeignCurrencies>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfGrossProfitLoss contextRef="ctx-2" id="id-mfognvjsep" xml:lang="en">Gross profit or lossGross profit or loss comprises revenue, cost of raw materials and consumables and external expenses.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfGrossProfitLoss>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfRevenue contextRef="ctx-2" id="id-tvu4izqv9bq" xml:lang="en">RevenueRevenue are recognised when risks and rewards are transferred to the client or a service has been provided.​​Revenue is recognised net of VAT, duties and
 sales discounts and is measured at fair value of the consideration fixed.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfRevenue>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfCostOfSales contextRef="ctx-2" id="id-m3m3irc0rr" xml:lang="en">Cost of salesCost of sales comprises goods and services consumed in the financial year measured at cost.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfCostOfSales>
   <fsa:DescriptionOfMethodsOfImpairmentLossesAndDepreciation contextRef="ctx-2" id="id-sy1g00ztqcq" xml:lang="en">Depreciation, amortisation and impairment lossesDepreciation, amortisation and impairment losses relating to property, plant and equipment comprise depreciation, amortisation and impairment losses for the financial year.</fsa:DescriptionOfMethodsOfImpairmentLossesAndDepreciation>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfFinanceIncome contextRef="ctx-2" id="id-roz7u9tr8rn" xml:lang="en">Other financial incomeOther financial income comprises interest income, including interest income on receivables from group enterprises and gains on payables and transactions in foreign currencies and tax relief under the Danish Tax Prepayment Scheme etc.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfFinanceIncome>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfFinanceExpenses contextRef="ctx-2" id="id-ks8kv7fkkr" xml:lang="en">Other financial expensesOther financial expenses comprises interest expenses, including interest expenses on payables to group enterprises and exchange losses on transactions in foreign currencies and tax surcharge under the Danish Tax Prepayment Scheme etc.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfFinanceExpenses>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfTaxExpenses contextRef="ctx-2" id="id-ieo3gcgh3kq" xml:lang="en">Tax on profit/loss for the yearTax for the year, which consists of current tax for the year and changes in deferred tax, is recognised in the
​income statement by the portion attributable to the profit for the year and recognised directly in equity by
 the portion attributable to entries directly in equity.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfTaxExpenses>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfPropertyPlantAndEquipment contextRef="ctx-2" id="id-jksv4i1mug" xml:lang="en">Property, plant and equipmentOther fixtures and fittings, tools and equipment are measured at cost less accumulated depreciation and impairment losses.​​Cost comprises the acquisition price, costs directly attributable to the acquisition and preparation costs of
 the asset until the time when it is ready to be put into operation. ​​The basis of depreciation is cost less estimated residual value after the end of useful life. Straight-line
 depreciation is made on the basis of the following estimated useful lives of the assets:Useful life
Other fixtures and fittings, tools and equipment4-7 yearsEstimated useful lives and residual values are reassessed annually.
​​Items of property, plant and equipment are written down to the lower of recoverable amount and carrying
​amount.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfPropertyPlantAndEquipment>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfReceivables contextRef="ctx-2" id="id-yre9ox36pos" xml:lang="en">ReceivablesReceivables are measured at amortised cost, usually equalling nominal value less writedowns for bad and
​doubtful debts.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfReceivables>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfTaxPayablesAndDeferredTax contextRef="ctx-2" id="id-z1bq6dond6l" xml:lang="en">Deferred taxDeferred tax is recognised on all temporary differences between the carrying amount and the tax-based
 value of assets and liabilities, for which the tax-based value is calculated based on the planned use of each
 asset. ​​Deferred tax assets, including the tax base of tax loss carryforwards, are recognised in the balance sheet at
​their estimated realisable value, either as a set-off against deferred tax liabilities or as net tax assets.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfTaxPayablesAndDeferredTax>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfDeferredIncomeAssets contextRef="ctx-2" id="id-ehtzaeat9wv" xml:lang="en">PrepaymentsPrepayments comprise incurred costs relating to subsequent financial years. Prepayments are measured at
​cost.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfDeferredIncomeAssets>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfLiabilitiesOtherThanProvisions contextRef="ctx-2" id="id-mn4pn6sw4c" xml:lang="en">Other financial liabilitiesOther financial liabilities are measured at amortised cost, which usually corresponds to nominal value.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfLiabilitiesOtherThanProvisions>
   <fsa:DescriptionOfMethodsOfCurrentTaxReceivablesAndLiabilities contextRef="ctx-2" id="id-h4qvmk0vq8" xml:lang="en">Tax receivable or payableCurrent tax receivable or payable is recognised in the balance sheet, stated as tax computed on this year's
​taxable income, adjusted for prepaid tax.</fsa:DescriptionOfMethodsOfCurrentTaxReceivablesAndLiabilities>
   <fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfDeferredIncomeLiabilities contextRef="ctx-2" id="id-mmvwq0fzx2" xml:lang="en">Deferred incomeDeferred income comprises income received for recognition in subsequent financial years. Deferred income
​is measured at cost.</fsa:DescriptionOfMethodsOfRecognitionAndMeasurementBasisOfDeferredIncomeLiabilities>
   <fsa:AccountingPoliciesAreUnchangedFromPreviousPeriod contextRef="ctx-2" id="id-rkxyn1n6knd">true</fsa:AccountingPoliciesAreUnchangedFromPreviousPeriod>
   <arr:TypeOfBasisForModifiedOpinionOnAuditedFinancialStatements contextRef="ctx-2" id="id-w7jfbm4my8i">Grundlag for konklusion</arr:TypeOfBasisForModifiedOpinionOnAuditedFinancialStatements>
   <arr:TypeOfModifiedOpinionOnAuditedFinancialStatements contextRef="ctx-2" id="id-8ulr5irxgvm">Konklusion</arr:TypeOfModifiedOpinionOnAuditedFinancialStatements>
   <arr:SignatureOfAuditorsDate contextRef="ctx-2" id="id-7a86xmjukd">2025-09-15</arr:SignatureOfAuditorsDate>
   <sob:DateOfApprovalOfAnnualReport contextRef="ctx-2" id="id-zku51wnwvr8">2025-09-15</sob:DateOfApprovalOfAnnualReport>
   <fsa:SelectedElementsFromReportingClassC contextRef="ctx-2" id="id-h9pnsmlbuv">true</fsa:SelectedElementsFromReportingClassC>
   <gsd:PrecedingReportingPeriodStartDate contextRef="ctx-2" id="id-bywqqaodyg8">2023-04-01</gsd:PrecedingReportingPeriodStartDate>
   <gsd:PredingReportingPeriodEndDate contextRef="ctx-2" id="id-o72oytbmc3j">2024-03-31</gsd:PredingReportingPeriodEndDate>
   <gsd:RegisteredOfficeOfReportingEntity contextRef="ctx-2" id="id-ptaip0lt19r" xml:lang="en">Copenhagen</gsd:RegisteredOfficeOfReportingEntity>
   <gsd:AddressOfReportingEntityDistrictName contextRef="ctx-2" id="id-yo2rajtd5cc" xml:lang="en">København N</gsd:AddressOfReportingEntityDistrictName>
   <gsd:AddressOfReportingEntityPostCodeIdentifier contextRef="ctx-2" id="id-x8fo24vjqj" xml:lang="en">2200</gsd:AddressOfReportingEntityPostCodeIdentifier>
   <fsa:ClassOfReportingEntity contextRef="ctx-2" id="id-sp1i7lynywl">Regnskabsklasse B</fsa:ClassOfReportingEntity>
   <cmn:TypeOfAuditorAssistance contextRef="ctx-2" id="id-rvc27vqtrcr">Revisionspåtegning</cmn:TypeOfAuditorAssistance>
   <gsd:ReportingPeriodEndDate contextRef="ctx-2" id="id-22l8n5e1yjl">2025-03-31</gsd:ReportingPeriodEndDate>
   <gsd:ReportingPeriodStartDate contextRef="ctx-2" id="id-m2qzeebvtw">2024-04-01</gsd:ReportingPeriodStartDate>
   <gsd:AddressOfReportingEntityStreetBuildingIdentifier contextRef="ctx-2" id="id-u6g67t2o6a-1" xml:lang="en">529</gsd:AddressOfReportingEntityStreetBuildingIdentifier>
   <gsd:AddressOfReportingEntityStreetName contextRef="ctx-2" id="id-greerus2k8g" xml:lang="en">Sortedam Dossering</gsd:AddressOfReportingEntityStreetName>
   <gsd:NameOfReportingEntity contextRef="ctx-2" id="id-snz9f9kggm" xml:lang="en">BT Denmark ApS</gsd:NameOfReportingEntity>
   <gsd:IdentificationNumberCvrOfReportingEntity contextRef="ctx-2" id="id-sqjdm6bg57o">24221415</gsd:IdentificationNumberCvrOfReportingEntity>
   <gsd:IdentificationNumberCvrOfSubmittingEnterprise contextRef="ctx-2" id="id-gxvltb99oqh">33963556</gsd:IdentificationNumberCvrOfSubmittingEnterprise>
   <gsd:AddressOfSubmittingEnterprisePostcodeAndTown contextRef="ctx-2" id="id-51avrkx7u" xml:lang="en">2300  København S</gsd:AddressOfSubmittingEnterprisePostcodeAndTown>
   <gsd:AddressOfSubmittingEnterpriseStreetAndNumber contextRef="ctx-2" id="id-7mpui91wq73" xml:lang="en">Weidekampsgade 6</gsd:AddressOfSubmittingEnterpriseStreetAndNumber>
   <gsd:NameOfSubmittingEnterprise contextRef="ctx-2" id="id-bt26xel3j9" xml:lang="en">Deloitte Statsautoriseret Revisionspartnerselskab</gsd:NameOfSubmittingEnterprise>
</xbrli:xbrl>
