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Schedule of changes in provision for doubtful accounts (Details) - Eletrobras [Member] - BRL (R$) R$ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
IfrsStatementLineItems [Line Items]
Beginning balance	R$ 712	R$ 810	R$ 751
Additions	144	146	238
Disposals	(23)	(244)	(179)
Ending Balance	R$ 833	R$ 712	R$ 810

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- References

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- Definition

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]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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