Receivables from Customers, Traders and Concession Holders - Schedule of Changes in Provision for Doubtful Accounts (Details) - Eletrobras [Member] - BRL (R$) R$ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
IfrsStatementLineItems [Line Items]
Beginning balance	R$ 867	R$ 820	R$ 833
Additions	268	174	239
Changes to estimate assumptions	(93)		(130)
Disposals	(191)	(127)	(122)
Ending Balance	R$ 851	R$ 867	R$ 820

The amount of current advances received representing current contract liabilities for performance obligations satisfied at a point in time. [Refer: Advances received, representing contract liabilities for performance obligations satisfied at point in time]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78&doctype=Standard
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant