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Schedule of assets per reportable segment (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
ASSETS | R$ 49,537,535 | R$ 46,784,664
CURRENT ASSETS | 11,189,872 | 11,407,431
Non-current assets | 38,347,663 | 35,377,233
Long term assets | 15,743,322 | 16,090,279
[custom:NoncurrentInvestment-0] | 3,042,134 |
Property, plant and equipment | 10,142,591 | 9,495,460
Intangible assets other than goodwill | 9,215,560 | 6,929,456
[custom:RightofuseAsset-0] | 204,056 | 132,521
[custom:NoncurrentAssets1-0] |  | 35,377,233
[custom:Investments1-0] |  | 2,729,517
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | 6,929,456
Electricity Get [Member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | 24,844,335 | 20,945,910
CURRENT ASSETS | 3,316,406 | 3,137,219
Non-current assets | 21,527,929 | 17,808,691
Long term assets | 6,639,545 | 5,561,545
[custom:NoncurrentInvestment-0] | 2,887,272 |
Property, plant and equipment | 10,123,352 | 9,420,859
Intangible assets other than goodwill | 1,799,391 |
[custom:RightofuseAsset-0] | 78,369 | 28,663
[custom:Investments1-0] |  | 2,574,402
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | 223,222
Electricity Dis [Member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | 20,804,701 | 20,407,088
CURRENT ASSETS | 6,448,051 | 6,198,414
Non-current assets | 14,356,650 | 14,208,674
Long term assets | 7,664,328 | 7,915,662
[custom:NoncurrentInvestment-0] | 540 |
Property, plant and equipment | (0) | (0)
Intangible assets other than goodwill | 6,596,184 |
[custom:RightofuseAsset-0] | 95,598 | 88,817
[custom:Investments1-0] |  | 808
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | 6,203,387
Com [Member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | 1,519,017 | 1,053,099
CURRENT ASSETS | 755,227 | 390,695
Non-current assets | 763,790 | 662,404
Long term assets | 757,873 | 660,229
[custom:NoncurrentInvestment-0] | (0) |
Property, plant and equipment | 305 | 224
Intangible assets other than goodwill | 4,038 |
[custom:RightofuseAsset-0] | 1,574 | 118
[custom:Investments1-0] |  |
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | 1,833
Tel [Member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | (0) | 1,565,593
CURRENT ASSETS | (0) | 666,654
Non-current assets | (0) | 898,939
Long term assets | (0) | 136,527
[custom:NoncurrentInvestment-0] | (0) |
Property, plant and equipment | (0) | 734,172
Intangible assets other than goodwill | (0) |
[custom:RightofuseAsset-0] |  | 11,247
[custom:Investments1-0] |  |
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | 16,993
Gas [Member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | 827,901 | 749,434
CURRENT ASSETS | 355,500 | 245,028
Non-current assets | 472,401 | 504,406
Long term assets | 362,649 | 358,719
[custom:NoncurrentInvestment-0] | (0) |
Property, plant and equipment | (0) |
Intangible assets other than goodwill | 96,145 |
[custom:RightofuseAsset-0] | 13,607 | 13,321
[custom:Investments1-0] |  |
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | 132,366
Hol [Member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | 3,243,736 | 4,733,847
CURRENT ASSETS | 2,356,145 | 2,543,995
Non-current assets | 887,591 | 2,189,852
Long term assets | 694,197 | 2,007,064
[custom:NoncurrentInvestment-0] | 154,322 |
Property, plant and equipment | 18,934 | 24,500
Intangible assets other than goodwill | 5,230 |
[custom:RightofuseAsset-0] | 14,908 | 1,602
[custom:Investments1-0] |  | 154,307
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | 2,379
Reclassifications Note 40 [Member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | (1,451,159) | (1,230,546)
CURRENT ASSETS | (652,886) | (380,954)
Non-current assets | (798,273) | (849,592)
Long term assets | (129,077) | (110,834)
[custom:NoncurrentInvestment-0] | (0) |
Property, plant and equipment | (651,458) | (716,924)
Intangible assets other than goodwill | (8,202) |
[custom:RightofuseAsset-0] | (9,536) | (11,247)
[custom:Investments1-0] |  |
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | (10,587)
Elimination of intersegment amounts [member] |  |
IfrsStatementLineItems [Line Items] |  |
ASSETS | (250,996) | (1,439,761)
CURRENT ASSETS | (1,388,571) | (1,393,620)
Non-current assets | 1,137,575 | (46,141)
Long term assets | (246,193) | (438,633)
[custom:NoncurrentInvestment-0] | (0) |
Property, plant and equipment | 651,458 | 32,629
Intangible assets other than goodwill | 722,774 |
[custom:RightofuseAsset-0] | R$ 9,536 |
[custom:Investments1-0] |  |
[custom:IntangibleAssetsOtherThanGoodwill3-0] |  | R$ 359,863

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