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Schedule of other operating expenses (revenues), net (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Operating Costs And Expenses |  |  |  |
Leasing and rentals |  | R$ 6 | R$ 11 | R$ 20
Advertising |  | 12 | 7 | 9
Own consumption of energy |  | 28 | 24 | 21
Subsidies and donations |  | 27 | 22 | 40
Onerous concession |  | 3 | 3 | 3
Insurance |  | 29 | 25 | 12
CCEE annual charge |  | 6 | 6 | 6
Net loss (gain) on deactivation and disposal of assets |  | (97) | (81) | (88)
Forluz – Administrative running cost |  | 32 | 30 | 30
Collection agents |  | 85 | 86 | 88
Obligations deriving from investment contracts | [1] | 11 | 9 | 32
Taxes and charges |  | 16 | 7 | 10
Losses (gains) on investments | [2] | 40 | (13) |
Other revenues (expenses) |  | 2 | (1) | 135
Other operating expenses (revenues), net |  | R$ (394) | R$ (297) | R$ (494)
[1] | This refers to claims under the agreement made between Aliança Geração, Vale S.A. and Cemig. The action is provisioned at the cost of R$149 (R$119 on December 31, 2020), of which Cemig is responsible for R$52 (R$41 on December 31, 2020).
[2] | The Company injected capital into UHE Itaocara S.A., to assist in compliance with the final Arbitration Ruling against the investee, given by the FGV in its Mediation and Arbitration Chamber, in the amount of R$40. This amount is proportional to its shareholding interest in the investee, and was recognized under Other expenses in the Company’s income statement.

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