CONCESSION FINANCIAL AND SECTOR ASSETS AND LIABILITIES (Details) - BRL (R$) R$ in Millions	Dec. 31, 2022	Dec. 31, 2021
IfrsStatementLineItems [Line Items]
Assets	R$ 5,993	R$ 6,474
Current assets	1,055	1,505
Non-current assets	4,938	4,969
Current liabilities		(51)
Assets related to infrastructure [member]
IfrsStatementLineItems [Line Items]
Assets	5,049	4,326
Energy distribution concession [member] \| Assets related to infrastructure [member]
IfrsStatementLineItems [Line Items]
Assets	1,370	684
Gas distribution concession [member] \| Assets related to infrastructure [member]
IfrsStatementLineItems [Line Items]
Assets	37	34
Generation receivable [member] \| Assets related to infrastructure [member]
IfrsStatementLineItems [Line Items]
Assets	692	816
Concession grant fee [member] \| Assets related to infrastructure [member]
IfrsStatementLineItems [Line Items]
Assets	2,950	2,792
Cva and other financial components in tariff adjustments [member] \| Assets related to infrastructure [member]
IfrsStatementLineItems [Line Items]
Assets	944	2,148
Cva and other financial components in tariff adjustments [member] \| Liabilities related to infrastructure [member]
IfrsStatementLineItems [Line Items]
Current liabilities		R$ (51)

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The amount of current financial assets. [Refer: Financial assets]

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The amount of current financial liabilities. [Refer: Financial liabilities]

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of non-current financial assets. [Refer: Financial assets]

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