ACCOUNTS RECEIVABLE, NET - Changes in provision (Details) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in the PCLD for customer electricity accounts
Opening balance as of January 1	R$ (1,264,059)
(+) Constitution		R$ (1,283,731)
Final balance on December, 31		R$ (1,264,059)
Expected credit loss rate	100.00%
Additional provision	R$ 2,644,259
Amazonas Energia
Changes in the PCLD for customer electricity accounts
Percentage of provisioning of debt confession instruments (ICD) held		100.00%
Additional provision	1,716,471
Account Receivable \| PECLD
Changes in the PCLD for customer electricity accounts
Opening balance as of January 1	3,296,863	R$ 1,668,710	R$ 2,635,209
(+) Constitution	648,170	1,891,966	619,232
(-) Reversal	(181,572)	(217,633)	(738,732)
(-) Write-off	(15,480)	(46,180)	(855,403)
Transfers			8,404
Final balance on December, 31	R$ 3,747,981	R$ 3,296,863	R$ 1,668,710

Represents the amount of additional provision for default risk.

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Percentage of provisioning of debt confession instruments (ICD) held by the entity.

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No definition available.

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The decrease in financial assets resulting from derecognition. [Refer: Financial assets]

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The decrease in financial assets resulting from write-off. [Refer: Financial assets]

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The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights.

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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 increase (decrease) in financial assets resulting from transfers. [Refer: Financial assets]

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The increase in financial assets resulting from origination or purchase. [Refer: Financial assets]

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