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Intangible assets (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
IfrsStatementLineItems [Line Items]
Intangible Assets	R$ 10,277,727	R$ 9,215,560
Distribution Concession Agreement 1 [Member]
IfrsStatementLineItems [Line Items]
Intangible Assets	7,257,827	6,596,184
Generation Concession Agreement [Member]
IfrsStatementLineItems [Line Items]
Intangible Assets	2,252,615	2,473,858	R$ 553,840
Gas distribution [member]
IfrsStatementLineItems [Line Items]
Intangible Assets	726,107	96,145	132,366
Other [Member]
IfrsStatementLineItems [Line Items]
Intangible Assets	R$ 41,178	R$ 49,373	R$ 39,863

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- Definition

The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 38
-IssueDate 2022-03-24
-Paragraph 118
-Subparagraph e
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URIDate 2022-03-24

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