XML 81 R67.htm IDEA: XBRL DOCUMENT
v3.23.2

OPERATING COSTS AND EXPENSES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Operating Costs And Expenses |
Schedule of operating costs and expenses |
Schedule of operating costs and expenses |  |  |
| 2022 | 2021 | 2020
Energy purchased for resale |  |  |
Supply from Itaipu Binacional | 1,644 | 1,946 | 1,990
Physical guarantee quota contracts | 925 | 832 | 780
Quotas for Angra I and II nuclear plants | 357 | 244 | 303
Spot market | 530 | 1,224 | 1,497
Proinfa Program | 598 | 401 | 318
| 2022 | 2021 | 2020
‘Bilateral’ contracts | 493 | 418 | 333
Energy acquired in Regulated Market auctions | 3,334 | 6,242 | 3,334
Energy acquired in the Free Market | 6,003 | 4,976 | 3,977
Distributed generation (‘Geração distribuída’) | 1,977 | 1,268 | 678
PIS/Pasep and Cofins credits | (1,247) | (1,450) | (1,099)
| 14,614 | 16,101 | 12,111
Basic Network Usage Charges |  |  |
Transmission charges - Basic Grid | 2,925 | 3,663 | 1,910
Distribution charges | 50 | 41 | 40
PIS/Pasep and Cofins credits | (304) | (367) | (202)
| 2,671 | 3,337 | 1,748
Gas purchased for resale | 2,735 | 2,011 | 1,083
Total costs of energy and gas | 20,020 | 21,449 | 14,942
Schedule of construction and infrastructure cost |
Schedule of construction and infrastructure cost |  |  |
| 2022 | 2021 | 2020
Personnel and managers | 135 | 100 | 83
Materials | 2,233 | 1,150 | 775
Outsourced services | 1,052 | 682 | 598
Others | 116 | 104 | 125
Total | 3,536 | 2,036 | 1,581
Schedule of other operating expenses (revenues), net |
Schedule of other operating expenses (revenues), net |  |  |  |  |  |  |  |  |  |
| Operating costs | Expected credit loss | General and administrative expenses | Other operating expenses |  |
| 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021 | 2022 | 2021
Personnel | 976 | 983 | - | - | 376 | 258 | - | - | 1,352 | 1,240
Employees’ and managers’ income sharing | - | - | - | - | 4 | 2 | 79 | 132 | 83 | 134
Post-employment benefits (Note 24) | - | - | - | - | - | - | 626 | 15 | 626 | 16
Materials | 93 | 76 | - | - | 55 | 18 | - | - | 149 | 94
Outsourced services | 1,433 | 1,265 | - | - | 273 | 185 | - | - | 1,706 | 1,450
Depreciation and amortization | 1,110 | 947 | - | - | 72 | 102 | - | - | 1,182 | 1,049
Operating provisions and adjustments for operating losses | 278 | 86 | - | - | - | - | 123 | 145 | 401 | 231
Expected credit losses of accounts receivable | - | - | 109 | 144 | - | - | - | - | 109 | 144
Reversal of provision for expected credit losses with related party - Renova | - | - | - | - | - | - | (54) | - | (54) | -
Write-off of financial asset (Note 14) | - | - | - | - | - | - | 172 | - | 172 | -
Other operation costs and expenses | 205 | 81 | - | - | 9 | 7 | 178 | 306 | 398 | 394
Total | 4,095 | 3,438 | 109 | 144 | 789 | 572 | 1,125 | 598 | 6,123 | 4,752

X
- References No definition available. + Details
Name: | cig_DisclosureOfConstructionCostExplanatory
Namespace Prefix: | cig_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | cig_DisclosureOfDetailedInformationAboutOperatingCostsAndExpensesExplanatory
Namespace Prefix: | cig_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | cig_OperatingCostsAndExpensesAbstract
Namespace Prefix: | cig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of other operating income or expense. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_10_e&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration