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Intangible assets (Details 3) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Intangible assets, beginning | R$ 9,215,560 |  |
Loss on disposal | (55,177) | R$ (30,623) | R$ (52,811)
Intangible assets, ending | 10,277,727 | 9,215,560 |
Gas distribution [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Intangible assets, beginning | 96,145 | 132,366 |
Transfers from contract assets | 13,738 | 3,398 |
Transfers from accounts receivable - concessions | 243,628 | (1,398) |
Amortization of quotas - concession and authorization | (40,690) | (38,221) |
Additions - renewal of the concession | 413,410 |  |
Loss on disposal | (124) |  |
Intangible assets, ending | R$ 726,107 | R$ 96,145 | R$ 132,366

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- Definition The decrease in intangible assets other than goodwill resulting from disposals. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2022-03-24 -Paragraph 118 -Subparagraph e -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_118_e_ii&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2022-03-24 -Paragraph 118 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_118_e&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 54 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_54_c&doctype=Standard -URIDate 2022-03-24 + Details
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