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Investments (Details 2) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Balance as of January 1, 2020 | R$ 338,211 | R$ 291,407 | R$ 345,798
Net income (loss) | 37,314 | 96,029 | 5,548
Other comprehensive income | 2,721 | 144 | (207)
Additional dividends proposed |  |  | (51,799)
Dividends | (24,187) | (49,369) | (7,933)
Balance as of January 1, 2022 | 313,861 | 338,211 | 291,407
Distribution of dividends with retained earnings | (40,198) |  |
Compagas [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance as of January 1, 2020 | 248,869 | 242,578 | 273,580
Net income (loss) | 87,809 | 48,800 | 28,898
Other comprehensive income | 702 | 144 | (168)
Additional dividends proposed |  |  | (51,799)
Dividends | (24,187) | (42,653) | (7,933)
Balance as of January 1, 2022 | 272,995 | 248,869 | 242,578
Distribution of dividends with retained earnings | (40,198) |  |
Elejor [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance as of January 1, 2020 | (12,285) | 4,046 | 12,858
Net income (loss) | (207) | (16,331) | (8,812)
Other comprehensive income | 2,041 |  |
Additional dividends proposed |  |  |
Dividends |  |  |
Balance as of January 1, 2022 | (10,451) | (12,285) | 4,046
Distribution of dividends with retained earnings |  |  |
U E G Araucaria [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance as of January 1, 2020 | 101,627 | 44,783 | 59,360
Net income (loss) | (50,288) | 63,560 | (14,538)
Other comprehensive income | (22) |  | (39)
Additional dividends proposed |  |  |
Dividends |  | (6,716) |
Balance as of January 1, 2022 | 51,317 | R$ 101,627 | R$ 44,783
Distribution of dividends with retained earnings |  |  |

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