Contract assets (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
IfrsStatementLineItems [Line Items]
Contract Assets	R$ 7,672,679	R$ 6,888,048
Current	220,660	148,488
Noncurrent	7,452,019	6,739,560
Power Distribution Service Concession 1 [Member]
IfrsStatementLineItems [Line Items]
Contract Assets	2,332,171	1,798,195
Piped Gas Distribution Service Concession [Member]
IfrsStatementLineItems [Line Items]
Contract Assets	30,032	29,815	R$ 27,254
Power Transmission Concession 1 [Member]
IfrsStatementLineItems [Line Items]
Contract Assets	R$ 5,310,476	R$ 5,060,038

No definition available.

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- Definition

The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer, when that right is conditioned on something other than the passage of time (for example, the entity’s future performance).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2022-03-24
-Paragraph 105
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-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2022-03-24
-Paragraph 116
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_116_a&doctype=Standard
-URIDate 2022-03-24

+ Details

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- Definition

The amount of current contract assets. [Refer: Contract assets]

+ References

+ Details

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- Definition

The amount of non-current contract assets. [Refer: Contract assets]

+ References

+ Details

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- Details

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- Details

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- Details

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