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    "entity": "scheme:549300Q5C74EHCZOV179",
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   "decimals": -3,
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    "entity": "scheme:549300Q5C74EHCZOV179",
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    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:NoncontrollingInterestsMember",
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  "Tag274": {
   "value": "44609000",
   "decimals": -3,
   "dimensions": {
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  },
  "Tag285": {
   "value": "25005000",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:ProfitLoss",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "bani:ConsolidatedReservesMember",
    "unit": "iso4217:EUR"
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  },
  "Tag294": {
   "value": "25005000",
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    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:EquityAttributableToOwnersOfParentMember",
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  "Tag308": {
   "value": "-340000",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughAcquisitionOfSubsidiary",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:NoncontrollingInterestsMember",
    "unit": "iso4217:EUR"
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  "Tag286": {
   "value": "0",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity",
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    "ifrs-full:ComponentsOfEquityAxis": "bani:ConsolidatedReservesMember",
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  "Tag278": {
   "value": "30000000",
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  },
  "Tag281": {
   "value": "392000",
   "decimals": -3,
   "dimensions": {
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    "entity": "scheme:549300Q5C74EHCZOV179",
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    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:CapitalReserveMember",
    "unit": "iso4217:EUR"
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  },
  "Tag305": {
   "value": "-1843000",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2022-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:TreasurySharesMember",
    "unit": "iso4217:EUR"
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  },
  "Tag287": {
   "value": "40726000",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300Q5C74EHCZOV179",
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    "ifrs-full:ComponentsOfEquityAxis": "bani:ConsolidatedReservesMember",
    "unit": "iso4217:EUR"
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  },
  "Tag290": {
   "value": "0",
   "decimals": -3,
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    "concept": "ifrs-full:Equity",
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    "ifrs-full:ComponentsOfEquityAxis": "bani:GainsAndLossesRecognizedDirectlyInEquityMember",
    "unit": "iso4217:EUR"
   }
  },
  "Tag296": {
   "value": "69274000",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2022-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:EquityAttributableToOwnersOfParentMember",
    "unit": "iso4217:EUR"
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  },
  "Tag302": {
   "value": "0",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2022-01-01T00:00:00",
    "ifrs-full:ComponentsOfEquityAxis": "ifrs-full:NoncontrollingInterestsMember",
    "unit": "iso4217:EUR"
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  },
  "Tag275": {
   "value": "69274000",
   "decimals": -3,
   "dimensions": {
    "concept": "ifrs-full:Equity",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2022-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "Tag309": {
   "value": "Banimmo",
   "dimensions": {
    "concept": "ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag310": {
   "value": "naamloze vennootschap",
   "dimensions": {
    "concept": "ifrs-full:LegalFormOfEntity",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag311": {
   "value": "Belgi\u00eb",
   "dimensions": {
    "concept": "ifrs-full:DomicileOfEntity",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag312": {
   "value": "Bischoffsheim-laan 33 te 1000 Brussel.",
   "dimensions": {
    "concept": "ifrs-full:AddressOfRegisteredOfficeOfEntity",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag313": {
   "value": "Patronale Life",
   "dimensions": {
    "concept": "ifrs-full:NameOfParentEntity",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag314": {
   "value": "Patronale Life",
   "dimensions": {
    "concept": "ifrs-full:NameOfUltimateParentOfGroup",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag315": {
   "value": "Haar strategie is gebaseerd op productdifferentiatie,inzicht in de klant, servicegerichte omgevingen, missie-gedreven acties en transparante communicatie.",
   "dimensions": {
    "concept": "ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag316": {
   "value": "Belgi\u00eb",
   "dimensions": {
    "concept": "ifrs-full:CountryOfIncorporation",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "Tag317": {
   "value": "Belgi\u00eb",
   "dimensions": {
    "concept": "ifrs-full:PrincipalPlaceOfBusiness",
    "language": "nl",
    "entity": "scheme:549300Q5C74EHCZOV179",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "footnote10": {
   "value": "<span>De rubriek \u201cTerugbetaling van leningen\u201d stemt overeen met de terugbetaling van leningen aan Patronale Life (zie toelichting 15).</span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote10",
    "language": "nl"
   }
  },
  "footnote5": {
   "value": "<span>De rubriek \u201cInvesteringsuitgaven op gebouwen in voorraad\u201d betreft voornamelijk de ontwikkeling van het gebouw NETWORKS N\u00d8R en de studie voor de<br/><span style=\"margin-left: 59pt;\">ontwikkeling van het gebouw NETWORKS Gent fase 2 (zie toelichting 11)</span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote5",
    "language": "nl"
   }
  },
  "footnote7": {
   "value": "<span>De rubriek \u201cVoorzieningen\u201d betreft enerzijds een voorziening die werd aangelegd voor een risico verbonden aan de contractuele verplichtingen in het dos-<br/><span style=\"margin-left: 59pt;\">sier \u201cParis Vaugirard\u201d t.o.v. de vennootschap la \u201cTour Eiffel\u201d en de voorziening voor de huurwaarbord op het vroegere Alma Court gebouw (zie toelichtingen<br/><span style=\"margin-left: 59pt;\">17 en 22)</span></span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote7",
    "language": "nl"
   }
  },
  "footnote4": {
   "value": "<span>De rubriek \u201cResultaat van be\u00ebindigde activiteiten\u201d betreft de verrichtingen van de be\u00ebindigde activiteit Golf Hotel de Chantilly (zie toelichting 36).</span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote4",
    "language": "nl"
   }
  },
  "footnote8": {
   "value": "<span>De rubriek \u201cInvesteringsuitgaven op vastgoedbeleggingen\u201d betreft voornamelijk de ontwikkeling van de gebouwen NETWORKS Gent One &amp; Two (zie<br/><span style=\"margin-left: 59pt;\">toelichting 6).</span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote8",
    "language": "nl"
   }
  },
  "footnote13": {
   "value": "<span>De rubriek \u201c(Terugneming van) waardeverminderingen op gebouwen in voorraad\u201d betreft de gebouwen: B\u00e2le, Da Vinci H2, SDEC Charleroi, Raket 40, Da<br/><span style=\"margin-left: 59pt;\">Vinci H5 en NETWORKS N\u00d8R (zie toelichtingen 11 en 21).</span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote13",
    "language": "nl"
   }
  },
  "footnote12": {
   "value": "<span>De rubriek \u201c(Winst) / verlies op de re\u00eble waarde van andere financi\u00eble activa\u201d betreft de waardering van de vastgoedcertificaten Atlantic House (zie toelich<br/><span style=\"margin-left: 59pt;\">ting 9).</span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote12",
    "language": "nl"
   }
  },
  "footnote9": {
   "value": "<span>De rubriek \u201cNieuwe leningen\u201d betreft een nieuwe banklening voor de herfinanciering van het gebouw NETWORKS Gent One &amp; Two (zie toelichting 15).</span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote9",
    "language": "nl"
   }
  },
  "footnote2": {
   "value": "<span>De rubriek \u201c(Winst) / verlies op de re\u00eble waarde van vastgoedbeleggingen\u201d betreft de gebouwen NETWORKS Forest, Da Vinci H3 en de gebouwen NET</span><br/><span style=\"margin-left: 59pt;\">WORKS Gent One &amp; Two (zie toelichting 6).</span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote2",
    "language": "nl"
   }
  },
  "footnote14": {
   "value": "<span>De rubriek \u201c(Terugneming van) waardeverminderingen op vorderingen\u201d betreft de totale waardevermindering van de vordering die de Banimmo groep heef<br/><span style=\"margin-left: 59pt;\">t.a.v. de vennootschap \u201cTour Eiffel\u201d ingevolge de vaststelling van een belangrijke waardevermindering op het onderliggend gebouw \u201cParis Vaugirard\u201d (zie<br/><span style=\"margin-left: 59pt;\">toelichtingen 10 en 22).</span></span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote14",
    "language": "nl"
   }
  },
  "footnote3": {
   "value": "<span>De rubriek \u201cAandeel in het verlies / (de winst) van geassocieerde deelnemingen en joint ventures\u201d betreft het resultaat van de geassocieerde deelneming<br/><span style=\"margin-left: 59pt;\">Grondbank The Loop en van de joint venture MC\u00b2 Development (zie toelichting 8).</span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote3",
    "language": "nl"
   }
  },
  "footnote1": {
   "value": "<span>De rubrieken \u201c(Winst) / verlies uit de verkoop van gebouwen in voorraad\u201d en \u201cOntvangsten uit de verkoop van gebouwen in voorraad\u201d betreffen het gebouw</span><br/><span style=\"margin-left: 59pt;\">NETWORKS N\u00d8R en respectievelijk het resultaat van de verkoop exclusief de terugneming van vroegere waardeverminderingen en de verkoopprijs van het</span><br/><span style=\"margin-left: 59pt;\">gebouw (zie toelichtingen 11 en 20).</span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote1",
    "language": "nl"
   }
  },
  "footnote6": {
   "value": "<span>De rubriek \u201cHandelsschulden en andere schulden\u201d betreft voornamelijk een schuld aan de BTW-administratie ingevolge de verkoop van het gebouw NET<br/><span style=\"margin-left: 59pt;\">WORKS N\u00d8R die vervallen is in januari 2022 (zie toelichting 18).</span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote6",
    "language": "nl"
   }
  },
  "footnote11": {
   "value": "<span>De rubrieken \u201cAfschrijvingen op gebruiksrechten van leasingcontracten\u201d en \u201cTerugbetalingen van schulden verbonden aan gebruiksrechten van leasing<br/><span style=\"margin-left: 59pt;\">contracten\u201d betreffen de toepassing van de nieuwe norm IFRS 16 (zie toelichting 12).</span></span>",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote11",
    "language": "nl"
   }
  }
 }
}