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   "dimensions": {
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    "entity": "scheme:549300FR1FN48IGHR915",
    "period": "2022-01-01T00:00:00",
    "unit": "iso4217:EUR"
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  },
  "f12845": {
   "value": "61499000",
   "decimals": -3,
   "dimensions": {
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  },
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   "value": "REN \u2013 Redes Energ\u00e9ticas Nacionais, SGPS, S.A.",
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    "concept": "ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification",
    "language": "pt",
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  },
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    "concept": "ifrs-full:DomicileOfEntity",
    "language": "pt",
    "entity": "scheme:549300FR1FN48IGHR915",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "f12871": {
   "value": "Portugal",
   "dimensions": {
    "concept": "ifrs-full:CountryOfIncorporation",
    "language": "pt",
    "entity": "scheme:549300FR1FN48IGHR915",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
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  "f12889": {
   "value": "O Grupo det\u00e9m, presentemente, duas \u00e1reas de neg\u00f3cio principais, a Eletricidade e o G\u00e1s, e uma \u00e1rea de neg\u00f3cio secund\u00e1ria, na \u00e1rea de Telecomunica\u00e7\u00f5es. O neg\u00f3cio da Eletricidade compreende as seguintes empresas: a) REN \u2013 Rede El\u00e9ctrica Nacional, S.A., constitu\u00edda em 26 de setembro de 2006, cujas atividades s\u00e3o desenvolvidas no \u00e2mbito de um contrato de concess\u00e3o atribu\u00eddo por um per\u00edodo de 50 anos, que se iniciou em 2007 e que estabelece a gest\u00e3o global do SEP; b) REN Trading, S.A., constitu\u00edda em 13 de junho de 2007, cuja fun\u00e7\u00e3o principal \u00e9 a gest\u00e3o dos Contratos de Aquisi\u00e7\u00e3o de Energia (\u201cCAE\u201d) da Turbog\u00e1s e da Tejo Energia que n\u00e3o cessaram em 30 de junho de 2007, data da entrada em vigor dos novos Contratos para a Manuten\u00e7\u00e3o do Equil\u00edbrio Contratual (\u201cCMEC\u201d). A atividade desta empresa compreende o com\u00e9rcio da eletricidade produzida e da capacidade de produ\u00e7\u00e3o instalada junto dos distribuidores nacionais e internacionais; c) Enondas, Energia das Ondas, S.A., constitu\u00edda em 14 de outubro de 2010, cujo capital social \u00e9 integralmente detido pela REN - Redes Energ\u00e9ticas Nacionais, SGPS, S.A., e tem como atividade a gest\u00e3o da concess\u00e3o para a explora\u00e7\u00e3o de uma zona-piloto destinada \u00e0 produ\u00e7\u00e3o de energia el\u00e9trica a partir das ondas do mar;d) Empresa de Transmisi\u00f3n El\u00e9ctrica Transemel, S.A. (\u201cTransemel\u201d), adquirida em 1 de outubro de 2019, no \u00e2mbito da expans\u00e3o do neg\u00f3cio de eletricidade no Chile. A atividade da empresa consiste na presta\u00e7\u00e3o de servi\u00e7os de transmiss\u00e3o e transforma\u00e7\u00e3o de eletricidade e no desenvolvimento, explora\u00e7\u00e3o e comercializa\u00e7\u00e3o de sistemas de transmiss\u00e3o, permitindo o livre acesso aos diferentes players do mercado el\u00e9trico no Chile. O neg\u00f3cio do G\u00e1s engloba as seguintes empresas: a) REN G\u00e1s, S.A. (\u201cREN G\u00e1s\u201d), constitu\u00edda em 29 de mar\u00e7o de 2011, com o objeto social de assegurar a promo\u00e7\u00e3o, o desenvolvimento e a condu\u00e7\u00e3o de projetos e empreendimentos no setor do g\u00e1s natural, bem como proceder \u00e0 defini\u00e7\u00e3o da estrat\u00e9gia global e \u00e0 coordena\u00e7\u00e3o das sociedades em que detenha participa\u00e7\u00e3o; b) REN Gasodutos, S.A., constitu\u00edda, em 26 de setembro de 2006, cujo capital social foi realizado atrav\u00e9s da integra\u00e7\u00e3o das infraestruturas de transporte de g\u00e1s (rede, liga\u00e7\u00f5es e compress\u00e3o); c) REN Armazenagem, S.A., constitu\u00edda em 26 de setembro de 2006, cujo capital social foi realizado pela integra\u00e7\u00e3o dos ativos de armazenamento subterr\u00e2neo de g\u00e1s; d) REN Atl\u00e2ntico, Terminal de GNL, S.A., adquirida no \u00e2mbito da aquisi\u00e7\u00e3o do neg\u00f3cio do g\u00e1s, anteriormente designada por \u201cSGNL \u2013 Sociedade Portuguesa de G\u00e1s Natural Liquefeito\u201d. A atividade desta empresa consiste no fornecimento de servi\u00e7os de rece\u00e7\u00e3o, armazenamento e regaseifica\u00e7\u00e3o de g\u00e1s natural liquefeito atrav\u00e9s do terminal mar\u00edtimo de GNL, sendo respons\u00e1vel pela constru\u00e7\u00e3o, utiliza\u00e7\u00e3o e manuten\u00e7\u00e3o das infraestruturas necess\u00e1rias; e) REN Portg\u00e1s Distribui\u00e7\u00e3o, S.A. (\u201cREN Portg\u00e1s\u201d), adquirida a 4 de outubro de 2017, no \u00e2mbito de expans\u00e3o do neg\u00f3cio do g\u00e1s. A empresa tem por objeto a explora\u00e7\u00e3o em regime de servi\u00e7o p\u00fablico da rede de distribui\u00e7\u00e3o regional de g\u00e1s natural e dos seus gases de substitui\u00e7\u00e3o em 29 concelhos da zona litoral norte de Portugal, distribu\u00eddos pelos distritos de Porto, Braga e Viana do Castelo, assim como a constru\u00e7\u00e3o e manuten\u00e7\u00e3o das respetivas infraestruturas.As atividades das empresas indicadas nas al\u00edneas b) a d) acima s\u00e3o desenvolvidas no \u00e2mbito de tr\u00eas contratos de concess\u00e3o atribu\u00eddos em separado, por um per\u00edodo de 40 anos com in\u00edcio em 2006. Por sua vez, a empresa na al\u00ednea e) desenvolve a sua atividade por contrato de concess\u00e3o atribu\u00edda por um per\u00edodo de 40 anos, com in\u00edcio no ano de 2008. O neg\u00f3cio das telecomunica\u00e7\u00f5es \u00e9 gerido pela RENTELECOM Comunica\u00e7\u00f5es, S.A. (\u201cRENTELECOM\u201d), cuja atividade consiste no estabelecimento, gest\u00e3o e utiliza\u00e7\u00e3o dos sistemas e infraestruturas de telecomunica\u00e7\u00f5es, fornecendo servi\u00e7os de comunica\u00e7\u00e3o e tirando proveito da capacidade excedent\u00e1ria de fibras \u00f3ticas e instala\u00e7\u00f5es pertencentes ao Grupo REN. A REN SGPS det\u00e9m a 100% a empresa REN Servi\u00e7os, S.A., cujo objeto social \u00e9 a presta\u00e7\u00e3o de servi\u00e7os em mat\u00e9ria energ\u00e9tica e de servi\u00e7os gen\u00e9ricos de apoio ao desenvolvimento do neg\u00f3cio, de forma remunerada, quer em empresas que com ela se encontrem em rela\u00e7\u00e3o de grupo, quer a quaisquer terceiros, bem como a gest\u00e3o de participa\u00e7\u00f5es sociais que a sociedade detenha em outras sociedades. Em 10 de maio de 2013, foi constitu\u00edda a REN Finance, B.V., empresa totalmente detida pela REN SGPS, com sede na Holanda, cujo objeto social \u00e9 participar, financiar, colaborar e conduzir a gest\u00e3o de empresas relacionadas. Adicionalmente, em 24 de maio de 2013, em conjunto com a China Electric Power Research Institute, sociedade do Grupo State Grid, foi constitu\u00eddo o Centro de Investiga\u00e7\u00e3o em Energia REN - STATE GRID, S.A. (\u201cCentro de Investiga\u00e7\u00e3o\u201d) em regime de joint venture, no qual o Grupo det\u00e9m 1.500.000 a\u00e7\u00f5es representativas de 50% do respetivo capital. O objeto social desta sociedade visa a implementa\u00e7\u00e3o de um Centro de Pesquisa e Desenvolvimento em Portugal, dedicado \u00e0 pesquisa, desenvolvimento, inova\u00e7\u00e3o e demonstra\u00e7\u00e3o nas \u00e1reas de transporte de eletricidade e gest\u00e3o de sistemas, a presta\u00e7\u00e3o de servi\u00e7os de consultoria e servi\u00e7os de educa\u00e7\u00e3o e forma\u00e7\u00e3o no \u00e2mbito destas atividades, bem como a realiza\u00e7\u00e3o de todas as atividades conexas e a presta\u00e7\u00e3o de servi\u00e7os complementares, conexos ou acess\u00f3rios ao seu objeto social. Em 14 de dezembro de 2016, foi constitu\u00edda a Aerio Chile SPA, empresa totalmente detida pela REN Servi\u00e7os, S.A., com sede em Santiago no Chile, cujo objeto social \u00e9 a realiza\u00e7\u00e3o de investimentos em bens, a\u00e7\u00f5es, direitos de sociedades e associa\u00e7\u00f5es. Adicionalmente, em 21 de novembro de 2018, foi constitu\u00edda a REN PRO, S.A., empresa totalmente detida pela REN, com sede em Lisboa, cujo objeto social \u00e9 a presta\u00e7\u00e3o de servi\u00e7os de apoio, nomeadamente administrativos, log\u00edsticos, de comunica\u00e7\u00e3o e suporte do desenvolvimento do neg\u00f3cio, bem como consultoria para os neg\u00f3cios, de forma remunerada, quer a empresas que com ela se encontrem em rela\u00e7\u00e3o de grupo quer a quaisquer terceiros, e a consultoria em inform\u00e1tica. Em 17 de julho de 2019, foi constitu\u00edda a Apolo Chile SPA, empresa totalmente detida pela REN Servi\u00e7os, S.A., com sede em Santiago no Chile, cujo objeto social \u00e9 a realiza\u00e7\u00e3o de investimentos em bens, a\u00e7\u00f5es, direitos de sociedades e associa\u00e7\u00f5es de entidades ligadas, essencialmente, ao setor de transmiss\u00e3o el\u00e9trica. ",
   "dimensions": {
    "concept": "ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities",
    "language": "pt",
    "entity": "scheme:549300FR1FN48IGHR915",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "f15603": {
   "value": " S.A.",
   "dimensions": {
    "concept": "ifrs-full:LegalFormOfEntity",
    "language": "pt",
    "entity": "scheme:549300FR1FN48IGHR915",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "f15605": {
   "value": "Portugal",
   "dimensions": {
    "concept": "ifrs-full:PrincipalPlaceOfBusiness",
    "language": "pt",
    "entity": "scheme:549300FR1FN48IGHR915",
    "period": "2021-01-01T00:00:00/2022-01-01T00:00:00"
   }
  },
  "footnote4x36x0": {
   "value": "a) Estes montantes incluem os pagamentos e recebimentos relativos a atividades na qual a Empresa atua como agente e cujos rendimentos e gastos s\u00e3o compensados na demonstra\u00e7\u00e3o consolidada dos resultados.",
   "dimensions": {
    "concept": "xbrl:note",
    "noteId": "footnote4x36x0",
    "language": "pt"
   }
  }
 }
}