CONTRACTUAL TRANSMISSION ASSETS - Movements (Details) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Investments in subsidiaries, joint ventures and associates [abstract]
Regulatory remeasurements - Transmission Contracts	R$ 6,129,771
Balance at end of period	R$ 67,387,656
Discount rate for renewed contracts awarded (as a percent)	6.55%
Average discount rate for renewed contracts (as a percent)	6.63%
Furnas [Member]
Investments in subsidiaries, joint ventures and associates [abstract]
Balance at beginning of period	R$ 61,212,338
Construction revenue	4,161,735
Financial income	7,405,486
Regulatory remeasurements - Transmission Contracts	6,129,771
Transfers	1,154
Amortization	(11,522,828)
Balance at end of period	67,387,656	R$ 61,212,338
Current	10,539,570
Non-current	56,848,086
Chesf
Investments in subsidiaries, joint ventures and associates [abstract]
Balance at beginning of period	R$ 61,212,338	61,052,210
Merge		1,049,923
Construction revenue		2,960,792
Financial income		7,136,080
Regulatory remeasurements - Transmission Contracts		(12,144)
Transfers		(21,778)
Amortization		(10,952,745)
Balance at end of period		61,212,338
Current		11,159,426
Non-current		R$ 50,052,912

It represents the amount of additions resulting from acquisitions.

No definition available.

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Namespace Prefix:	ebr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Average discount rate for renewed contracts.

+ References

No definition available.

+ Details

Name:	ebr_AverageDiscountRateForRenewedContracts
Namespace Prefix:	ebr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of income associated with interest and other financing activities of contractual assets.

+ References

No definition available.

+ Details

Name:	ebr_ContratualAssetsFinanceIncome
Namespace Prefix:	ebr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The decrease in contract assets resulting from the right to consideration becoming unconditional.

+ References

No definition available.

+ Details

Name:	ebr_DecreaseThroughRightToConsiderationBecomingUnconditionalAmortization
Namespace Prefix:	ebr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Discount rate for renewed contracts awarded.

+ References

No definition available.

+ Details

Name:	ebr_DiscountRateForRenewedContractsAwarded
Namespace Prefix:	ebr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase (decrease) in contract assets resulting from transfers.

+ References

No definition available.

+ Details

Name:	ebr_IncreaseDecreaseThroughTransfersContractAssets
Namespace Prefix:	ebr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The increase in contract assets resulting from addition of construction revenue.

+ References

No definition available.

+ Details

Name:	ebr_IncreaseThroughAdditionOfConstructionRevenueContractAssets
Namespace Prefix:	ebr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

It represents the amount of regulatory remeasurement of transmission contracts.

+ References

No definition available.

+ Details

Name:	ebr_RegulatoryRemeasurementOfTransmissionContracts
Namespace Prefix:	ebr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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 2023-01-01
-Paragraph 105
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_105&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 116
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_a&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ebr_FurnasCentraisEletricasS.a.Member
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- Details

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