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24 Sectorial Charges Due (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2019	Dec. 31, 2018
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due	R$ 28,508	R$ 79,872
Energy Development Account (CDE) [Member]
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due	4,104	73,549
Global Reversal Reserve (RGR) [Member]
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due	12,068	6,323
Tariff flags [Member]
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due	R$ 12,336	R$ 0

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+ References

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- Definition

The amount of current payables due to related parties. [Refer: Related parties [member]; Payables to related parties]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 78
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78&doctype=Standard
-URIDate 2019-03-27

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