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25. PROVISIONS (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | R$ 1,888 |  |
Additions |  | 291 |  |
Reversals |  | (105) |  |
Settled / Reversal | [1] | (185) |  |
Provisions arising from business combination | [2] | 3 |  |
Other provisions ending balance |  | 1,892 | R$ 1,888 |
Restated [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 1,888 | 641 | R$ 678
Additions |  |  | 1,468 | 115
Reversals |  |  | (68) | (64)
Settled |  |  | (153) | (88)
Other provisions ending balance |  |  | 1,888 | 641
Labour Provision [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 497 | 457 | 474
Additions |  | 106 | 180 | 67
Reversals |  | (60) | (44) | (25)
Settled |  |  | (96) | (59)
Settled / Reversal | [1] | (116) |  |
Provisions arising from business combination | [2] |  |  |
Other provisions ending balance |  | 427 | 497 | 457
Customer Relations [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 19 | 19 | 18
Additions |  | 22 | 21 | 17
Reversals |  |  | (1) |
Settled |  |  | (20) | (16)
Settled / Reversal | [1] | (18) |  |
Provisions arising from business combination | [2] |  |  |
Other provisions ending balance |  | 23 | 19 | 19
Other Civil Actions [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 18 | 29 | 43
Additions |  | 21 | 16 | 10
Reversals |  |  | (12) | (14)
Settled |  |  | (15) | (10)
Settled / Reversal | [1] | (7) |  |
Provisions arising from business combination | [2] |  |  |
Other provisions ending balance |  | 32 | 18 | 29
Civil Cases [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 37 | 48 | 61
Additions |  | 43 | 37 | 27
Reversals |  |  | (13) | (14)
Settled |  |  | (35) | (26)
Settled / Reversal | [1] | (25) |  |
Provisions arising from business combination | [2] |  |  |
Other provisions ending balance |  | 55 | 37 | 48
Tax [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 1,260 | 52 | 57
Additions |  | 113 | 1,236 | 5
Reversals |  | (38) | (8) | (10)
Settled |  |  | (20) |
Settled / Reversal | [1] | (41) |  |
Provisions arising from business combination | [2] |  |  |
Other provisions ending balance |  | 1,294 | 1,260 | 52
Environmental [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  |  | 1 |
Additions |  |  |  | 1
Reversals |  |  | (1) |
Settled |  |  |  |
Other provisions ending balance |  |  |  | 1
Regulatory [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 36 | 37 | 40
Additions |  | 16 | 2 | 8
Reversals |  |  | (1) | (10)
Settled |  |  | (2) | (1)
Settled / Reversal | [1] |  |  |
Provisions arising from business combination | [2] |  |  |
Other provisions ending balance |  | 52 | 36 | 37
Other [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  | 58 | 46 | 46
Additions |  | 13 | 13 | 7
Reversals |  | (7) | (1) | (5)
Settled |  |  |  | (2)
Settled / Reversal | [1] | (3) |  |
Provisions arising from business combination | [2] | 3 |  |
Other provisions ending balance |  | R$ 64 | R$ 58 | 46
Corporate [member] |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Other provisions Beginning Balance |  |  |  |
[1] | This includes the amount of R$39, corresponding to the reversal of the contingency provisions relating to ICMS credits, recognized as recoverable taxes, due to a final judgment, against which there is no further appeal, in favor of the subsidiary Gasmig, on June 9, 2020.
[2] | On January 13, 2020, the Company obtained the Centroeste control, which is consolidated as of 2020 first quarter. More details see note 16.

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