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   "decimals": -6,
   "dimensions": {
    "concept": "CABK:Inflowsofcashfromfinancingactivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
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  },
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    "concept": "CABK:Inflowsofcashfromfinancingactivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
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    "unit": "iso4217:EUR"
   }
  },
  "ID_758": {
   "value": "746000000",
   "decimals": -6,
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   }
  },
  "ID_757": {
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    "unit": "iso4217:EUR"
   }
  },
  "ID_759": {
   "value": "6000000",
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   }
  },
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
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    "unit": "iso4217:EUR"
   }
  },
  "ID_761": {
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
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    "unit": "iso4217:EUR"
   }
  },
  "ID_802": {
   "value": "2985000000",
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    "concept": "CABK:Otherinflowsofcashclassifiedasfinancingactivities",
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    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00",
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   }
  },
  "ID_803": {
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  },
  "ID_804": {
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  },
  "ID_700": {
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   }
  },
  "ID_701": {
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   }
  },
  "ID_702": {
   "value": "-4000000",
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    "unit": "iso4217:EUR"
   }
  },
  "ID_673": {
   "value": "36501000000",
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    "unit": "iso4217:EUR"
   }
  },
  "ID_674": {
   "value": "-4048000000",
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2019-01-01T00:00:00/2020-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_675": {
   "value": "-997000000",
   "decimals": -6,
   "dimensions": {
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2018-01-01T00:00:00/2019-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_676": {
   "value": "15110000000",
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   "dimensions": {
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
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    "unit": "iso4217:EUR"
   }
  },
  "ID_677": {
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
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  },
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  },
  "ID_679": {
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  },
  "ID_680": {
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  "ID_681": {
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  },
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  },
  "ID_683": {
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_684": {
   "value": "2468000000",
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2019-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_685": {
   "value": "48535000000",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:CashAndBankBalancesAtCentralBanks",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2021-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_686": {
   "value": "11836000000",
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    "period": "2020-01-01T00:00:00",
    "unit": "iso4217:EUR"
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  },
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   }
  },
  "ID_688": {
   "value": "737000000",
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  },
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  },
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  },
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    "unit": "iso4217:EUR"
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  },
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    "unit": "iso4217:EUR"
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  },
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    "unit": "iso4217:EUR"
   }
  },
  "ID_691": {
   "value": "7413000000",
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   "dimensions": {
    "concept": "ifrs-full:InterestReceivedClassifiedAsOperatingActivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00",
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  },
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    "unit": "iso4217:EUR"
   }
  },
  "ID_694": {
   "value": "2123000000",
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   "dimensions": {
    "concept": "ifrs-full:InterestPaidClassifiedAsOperatingActivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_695": {
   "value": "1951000000",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:InterestPaidClassifiedAsOperatingActivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2019-01-01T00:00:00/2020-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_696": {
   "value": "2100000000",
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    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2018-01-01T00:00:00/2019-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_697": {
   "value": "532000000",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:DividendsReceivedClassifiedAsOperatingActivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_698": {
   "value": "578000000",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:DividendsReceivedClassifiedAsOperatingActivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2019-01-01T00:00:00/2020-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_699": {
   "value": "456000000",
   "decimals": -6,
   "dimensions": {
    "concept": "ifrs-full:DividendsReceivedClassifiedAsOperatingActivities",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2018-01-01T00:00:00/2019-01-01T00:00:00",
    "unit": "iso4217:EUR"
   }
  },
  "ID_1": {
   "value": "CaixaBank, S.A.",
   "dimensions": {
    "concept": "ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_3": {
   "value": "calle Pintor Sorolla, 2-4",
   "dimensions": {
    "concept": "ifrs-full:DomicileOfEntity",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_5": {
   "value": "Valencia",
   "dimensions": {
    "concept": "ifrs-full:AddressOfRegisteredOfficeOfEntity",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_7": {
   "value": "Espa\u00f1a",
   "dimensions": {
    "concept": "ifrs-full:CountryOfIncorporation",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_2": {
   "value": "Los hitos societarios m\u00e1s relevantes de la Entidad durante su periodo de actividad son los siguientes:",
   "dimensions": {
    "concept": "ifrs-full:ExplanationOfChangeInNameOfReportingEntityOrOtherMeansOfIdentificationFromEndOfPrecedingReportingPeriod",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_6": {
   "value": "la realizaci\u00f3n de toda clase de actividades, operaciones, actos, contratos y servicios propios del negocio de banca en general, incluida la prestaci\u00f3n de servicios de inversi\u00f3n y servicios auxiliares, y la realizaci\u00f3n de actividades de agencia de seguros;",
   "dimensions": {
    "concept": "ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_6A": {
   "value": "la recepci\u00f3n de fondos del p\u00fablico en forma de dep\u00f3sito irregular o en otras an\u00e1logas, para su aplicaci\u00f3n por cuenta propia a operaciones activas de cr\u00e9dito y de microcr\u00e9dito, y a otras inversiones, prestando a la clientela servicios de giro, transferencia, custodia, mediaci\u00f3n y otros; y",
   "dimensions": {
    "concept": "ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_6AA": {
   "value": "la adquisici\u00f3n, tenencia, disfrute y enajenaci\u00f3n de toda clase de t\u00edtulos valores y la formulaci\u00f3n de oferta p\u00fablica de adquisici\u00f3n y venta de valores, as\u00ed como de toda clase de participaciones en cualquier sociedad o empresa.",
   "dimensions": {
    "concept": "ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_8": {
   "value": "CaixaBank S.A.",
   "dimensions": {
    "concept": "ifrs-full:NameOfParentEntity",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_9": {
   "value": "CaixaBank S.A",
   "dimensions": {
    "concept": "ifrs-full:NameOfUltimateParentOfGroup",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_10": {
   "value": "Espa\u00f1a",
   "dimensions": {
    "concept": "ifrs-full:PrincipalPlaceOfBusiness",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  },
  "ID_4": {
   "value": "sociedad an\u00f3nima",
   "dimensions": {
    "concept": "ifrs-full:LegalFormOfEntity",
    "language": "es",
    "entity": "scheme:7CUNS533WID6K7DGFI87",
    "period": "2020-01-01T00:00:00/2021-01-01T00:00:00"
   }
  }
 }
}