{
 "documentInfo": {
  "documentType": "https://xbrl.org/2021/xbrl-json",
  "features": {
   "xbrl:canonicalValues": true
  },
  "namespaces": {
   "ifrs-full": "https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full",
   "iso4217": "http://www.xbrl.org/2003/iso4217",
   "scheme": "http://standards.iso.org/iso/17442",
   "xbrl": "https://xbrl.org/2021",
   "xbrli": "http://www.xbrl.org/2003/instance"
  },
  "taxonomy": [
   "http://xbrl.zealandpharma.com/2026-03-31/zealandpharma-2026-03-31.xsd"
  ]
 },
 "facts": {
  "f1__s3__3__5": {
   "value": "34000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Revenue",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__5": {
   "value": "8000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Revenue",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__6": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:CostOfSales",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__6": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:CostOfSales",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__7": {
   "value": "34000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:GrossProfit",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__7": {
   "value": "8000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:GrossProfit",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__8": {
   "value": "469000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ResearchAndDevelopmentExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__8": {
   "value": "290000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ResearchAndDevelopmentExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__9": {
   "value": "22000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:SalesAndMarketingExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__9": {
   "value": "37000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:SalesAndMarketingExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__10": {
   "value": "82000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:GeneralAndAdministrativeExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__10": {
   "value": "65000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:GeneralAndAdministrativeExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__11": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:MiscellaneousOtherOperatingExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__11": {
   "value": "22000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:MiscellaneousOtherOperatingExpense",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__12": {
   "value": "573000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OperatingExpenseExcludingCostOfSales",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__12": {
   "value": "414000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OperatingExpenseExcludingCostOfSales",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__13": {
   "value": "-539000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLossFromOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__13": {
   "value": "-406000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLossFromOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__14": {
   "value": "172000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__14": {
   "value": "90000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__15": {
   "value": "27000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceCosts",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__15": {
   "value": "20000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceCosts",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__16": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLossBeforeTax",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__16": {
   "value": "-336000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLossBeforeTax",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__17": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncomeTaxExpenseContinuingOperations",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__17": {
   "value": "-1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncomeTaxExpenseContinuingOperations",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__18": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__4__18": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s3__3__19": {
   "value": "-5.58",
   "decimals": 2,
   "dimensions": {
    "concept": "ifrs-full:BasicEarningsLossPerShare",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK/xbrli:shares"
   }
  },
  "f1__s3__3__19_1": {
   "value": "-5.58",
   "decimals": 2,
   "dimensions": {
    "concept": "ifrs-full:DilutedEarningsLossPerShare",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK/xbrli:shares"
   }
  },
  "f1__s3__4__19": {
   "value": "-4.74",
   "decimals": 2,
   "dimensions": {
    "concept": "ifrs-full:BasicEarningsLossPerShare",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK/xbrli:shares"
   }
  },
  "f1__s3__4__19_1": {
   "value": "-4.74",
   "decimals": 2,
   "dimensions": {
    "concept": "ifrs-full:DilutedEarningsLossPerShare",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK/xbrli:shares"
   }
  },
  "f1__s4__3__5": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s4__4__5": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s4__3__6": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s4__4__6": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s4__3__7": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s4__4__7": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__5": {
   "value": "45000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IntangibleAssetsOtherThanGoodwill",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__5": {
   "value": "45000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IntangibleAssetsOtherThanGoodwill",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__6": {
   "value": "77000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PropertyPlantAndEquipment",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__6": {
   "value": "70000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PropertyPlantAndEquipment",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__7": {
   "value": "87000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:RightofuseAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__7": {
   "value": "82000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:RightofuseAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__8": {
   "value": "1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:DeferredTaxAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__8": {
   "value": "1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:DeferredTaxAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__9": {
   "value": "53000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentPrepayments",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__9": {
   "value": "61000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentPrepayments",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__10": {
   "value": "20000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherNoncurrentReceivables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__10": {
   "value": "20000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherNoncurrentReceivables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__11": {
   "value": "283000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__11": {
   "value": "279000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__14": {
   "value": "311000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentPrepayments",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__14": {
   "value": "242000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentPrepayments",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__15": {
   "value": "106000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentTradeReceivables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__15": {
   "value": "174000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentTradeReceivables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__16": {
   "value": "102000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherCurrentReceivables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__16": {
   "value": "114000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherCurrentReceivables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__17": {
   "value": "31000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentTaxAssetsCurrent",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__17": {
   "value": "31000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentTaxAssetsCurrent",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__18": {
   "value": "10619000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentFinancialAssetsAtFairValueThroughProfitOrLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__18": {
   "value": "10532000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentFinancialAssetsAtFairValueThroughProfitOrLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__19": {
   "value": "3849000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__19": {
   "value": "4577000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__20": {
   "value": "15018000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__20": {
   "value": "15670000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentAssets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__23": {
   "value": "15301000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Assets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__23": {
   "value": "15949000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Assets",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__26": {
   "value": "72000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IssuedCapital",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__26": {
   "value": "72000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IssuedCapital",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__27": {
   "value": "14730000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:SharePremium",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__27": {
   "value": "14729000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:SharePremium",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__28": {
   "value": "23000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ReserveOfExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__28": {
   "value": "24000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ReserveOfExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__29": {
   "value": "-356000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:RetainedEarnings",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__29": {
   "value": "6000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:RetainedEarnings",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__30": {
   "value": "14469000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__30": {
   "value": "14831000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__33": {
   "value": "307000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:LongtermBorrowings",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__33": {
   "value": "303000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:LongtermBorrowings",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__34": {
   "value": "43000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentDerivativeFinancialLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__34": {
   "value": "70000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentDerivativeFinancialLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__35": {
   "value": "78000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentLeaseLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__35": {
   "value": "80000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentLeaseLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__36": {
   "value": "428000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__36": {
   "value": "453000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:NoncurrentLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__39": {
   "value": "33000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentDeferredIncomeIncludingCurrentContractLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__39": {
   "value": "65000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentDeferredIncomeIncludingCurrentContractLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__40": {
   "value": "29000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentLeaseLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__40": {
   "value": "23000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentLeaseLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__41": {
   "value": "260000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__41": {
   "value": "347000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__42": {
   "value": "82000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherCurrentPayables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__42": {
   "value": "230000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherCurrentPayables",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__43": {
   "value": "404000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__43": {
   "value": "665000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CurrentLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__46": {
   "value": "832000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Liabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__46": {
   "value": "1118000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Liabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__3__49": {
   "value": "15301000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:EquityAndLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s5__4__49": {
   "value": "15949000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:EquityAndLiabilities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__5": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__5": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__6": {
   "value": "-71000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherAdjustmentsForNoncashItems",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__6": {
   "value": "-42000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherAdjustmentsForNoncashItems",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__7": {
   "value": "280000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseInWorkingCapital",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__7": {
   "value": "181000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseInWorkingCapital",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__8": {
   "value": "76000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceIncomeReceivedClassifiedAsOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__8": {
   "value": "60000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceIncomeReceivedClassifiedAsOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__9": {
   "value": "3000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceCostsPaidClassifiedAsOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__9": {
   "value": "3000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:FinanceCostsPaidClassifiedAsOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__10": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__10": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__11": {
   "value": "-672000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__11": {
   "value": "-501000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashFlowsFromUsedInOperatingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__15": {
   "value": "3694000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__15": {
   "value": "3102000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__16": {
   "value": "3799000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__16": {
   "value": "2563000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__17": {
   "value": "1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__17": {
   "value": "2000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__18": {
   "value": "10000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__18": {
   "value": "6000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__19": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__19": {
   "value": "24000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__20": {
   "value": "-116000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__20": {
   "value": "555000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashFlowsFromUsedInInvestingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__23": {
   "value": "9000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__23": {
   "value": "4000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__24": {
   "value": "1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProceedsFromExerciseOfWarrants",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__24": {
   "value": "3000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProceedsFromExerciseOfWarrants",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__25": {
   "value": "-8000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__25": {
   "value": "-1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashFlowsFromUsedInFinancingActivities",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__28": {
   "value": "-796000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__28": {
   "value": "53000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__29": {
   "value": "4577000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__29": {
   "value": "726000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__30": {
   "value": "68000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__30": {
   "value": "-3000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__3__31": {
   "value": "3849000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s6__4__31": {
   "value": "776000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashAndCashEquivalents",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__5": {
   "value": "72000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__5": {
   "value": "14729000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__5": {
   "value": "23000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__5": {
   "value": "6000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__5": {
   "value": "14830000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__6": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__6": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__6": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__6": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__6": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__7": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__7": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__7": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__7": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__7": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__8": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__8": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__8": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__8": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__8": {
   "value": "-394000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__9": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__9": {
   "value": "1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__9": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__9": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__9": {
   "value": "1000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__10": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__10": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__10": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__10": {
   "value": "32000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__10": {
   "value": "32000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__11": {
   "value": "72000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__11": {
   "value": "14730000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__11": {
   "value": "23000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__11": {
   "value": "-356000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__11": {
   "value": "14469000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__17": {
   "value": "71000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__17": {
   "value": "14681000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__17": {
   "value": "22000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__17": {
   "value": "-6157000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__17": {
   "value": "8617000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__18": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__18": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__18": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__18": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__18": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__19": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__19": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__19": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__19": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__19": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__20": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__20": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__20": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__20": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__20": {
   "value": "-335000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:ComprehensiveIncome",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__21": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__21": {
   "value": "3000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__21": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__21": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__21": {
   "value": "3000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughExerciseOfWarrantsEquity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__22": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__22": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__22": {
   "value": "0.0",
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__22": {
   "value": "23000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__22": {
   "value": "23000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-01-01T00:00:00/2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__3__23": {
   "value": "71000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:IssuedCapitalMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__4__23": {
   "value": "14684000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:SharePremiumMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__5__23": {
   "value": "22000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__6__23": {
   "value": "-6469000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-04-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:RetainedEarningsMember",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s7__7__23": {
   "value": "8308000000.0",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2025-04-01T00:00:00",
    "unit": "iso4217:DKK"
   }
  },
  "f1__s9__7__7": {
   "value": "Zealand Pharma A/S",
   "dimensions": {
    "concept": "ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification",
    "language": "en",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00"
   }
  },
  "f1__s9__7__10": {
   "value": "A/S",
   "dimensions": {
    "concept": "ifrs-full:LegalFormOfEntity",
    "language": "en",
    "entity": "scheme:549300ITBB1ULBL4CZ12",
    "period": "2026-01-01T00:00:00/2026-04-01T00:00:00"
   }
  }
 }
}