CONCESSION CONTRACT ASSETS (Details 1) - BRL (R$) R$ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
IfrsStatementLineItems [Line Items]
Balance on December 31, 2021	R$ 6,380	R$ 4,980	R$ 3,884
Additions	3,566	2,059	1,597
Inflation adjustment	575	660	438
Results of the Periodic Tariff Revision		237	552
Amounts received	(608)	(612)	(623)
Disposals	(3)	(8)	(9)
Transfers to financial assets	(762)	(110)	(60)
Transfers to intangible assets	(2,448)	(902)	(906)
Contract assets arising from business combination		81	108
Impairment			(1)
Others additions	5	6
Provision for Impairment	(1)	(11)
Balance on December 31, 2022	6,704	6,380	4,980
Transmission Segment [Member]
IfrsStatementLineItems [Line Items]
Balance on December 31, 2021	4,358	3,745	3,076
Additions	407	252	201
Inflation adjustment	575	660	438
Results of the Periodic Tariff Revision		237	552
Amounts received	(608)	(612)	(623)
Disposals		(5)	(7)
Transfers to financial assets
Transfers to intangible assets
Contract assets arising from business combination		81	108
Impairment
Others additions	5
Provision for Impairment
Balance on December 31, 2022	4,737	4,358	3,745
Distribution Segment [Member]
IfrsStatementLineItems [Line Items]
Balance on December 31, 2021	1,927	1,142	740
Additions	3,098	1,757	1,346
Inflation adjustment
Results of the Periodic Tariff Revision
Amounts received
Disposals
Transfers to financial assets	(762)	(110)	(60)
Transfers to intangible assets	(2,412)	(851)	(883)
Contract assets arising from business combination
Impairment			(1)
Others additions
Provision for Impairment	(1)	(11)
Balance on December 31, 2022	1,850	1,927	1,142
Gas And Power Segment [Member]
IfrsStatementLineItems [Line Items]
Balance on December 31, 2021	95	93	68
Additions	61	50	50
Inflation adjustment
Results of the Periodic Tariff Revision
Amounts received
Disposals	(3)	(3)	(2)
Transfers to financial assets
Transfers to intangible assets	(36)	(51)	(23)
Contract assets arising from business combination
Impairment
Others additions		6
Provision for Impairment
Balance on December 31, 2022	R$ 117	R$ 95	R$ 93

Contract assets amounts received.

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Represent information about the contract assets arising from business combination.

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Increase (decrease) through transfers to financial assets

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Increase (decrease) through transfers to intangible assets

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Provision for impairment loss.

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Represent information about the results of periodic tariff revision.

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The amount of additions to non-current assets other than financial instruments, deferred tax assets, net defined benefit assets and rights arising under insurance contracts. [Refer: Deferred tax assets; Financial instruments, class [member]; Non-current assets; Types of insurance contracts [member]]

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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).

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