XML 92 R56.htm IDEA: XBRL DOCUMENT
v3.22.1

CONCESSION CONTRACT ASSETS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Concession Contract Assets |
Schedule of detailed information about concession contract assets | Under IFRS 15 —Revenue from contracts with customers, the infrastructure construction revenue for which the right to consideration depends on satisfaction of performance obligations related to the completion of its construction, or its future operation and maintenance are classified as contract assets as follows: Schedule of detailed information about concession contract assets
|  | 2021 |  | 2020
Distribution — Infrastructure assets under construction |  |  | 1,927 |  |  |  | 1,142 |
Gas — Infrastructure assets under construction |  |  | 95 |  |  |  | 94 |
Transmission — National Grid (‘BNEs’ - Basic Network of the Existing System) - Law 12,783/13 |  |  | 2,011 |  |  |  | 1,896 |
Transmission — Assets remunerated by tariff |  |  | 2,347 |  |  |  | 1,848 |
|  |  | 6,380 |  |  |  | 4,980 |
Current |  |  | 600 |  |  |  | 737 |
Non-current |  |  | 5,780 |  |  |  | 4,243 |
Changes in concession contract assets are as follows: | Changes in concession contract assets are as follows:
|  | Transmission |  | Distribution |  | Gas |  | Total
Balances at December 31, 2018 |  |  | 2,909 |  |  |  | 518 |  |  |  | 82 |  |  |  | 3,509 |
Additions |  |  | 312 |  |  |  | 903 |  |  |  | 43 |  |  |  | 1,258 |
Inflation adjustment |  |  | 328 |  |  |  | — |  |  |  | — |  |  |  | 328 |
Amounts received |  |  | (473 | ) |  |  | — |  |  |  | — |  |  |  | (473 | )
Disposals |  |  | — |  |  |  | — |  |  |  | (2 | ) |  |  | (2 | )
Transfers to financial assets |  |  | — |  |  |  | (48 | ) |  |  | — |  |  |  | (48 | )
Transfers to intangible assets |  |  | — |  |  |  | (630 | ) |  |  | (55 | ) |  |  | (685 | )
Impairment |  |  | — |  |  |  | (3 | ) |  |  | — |  |  |  | (3 | )
Balances at December 31, 2019 |  |  | 3,076 |  |  |  | 740 |  |  |  | 68 |  |  |  | 3,884 |
Additions |  |  | 201 |  |  |  | 1,346 |  |  |  | 50 |  |  |  | 1,597 |
Inflation adjustment |  |  | 438 |  |  |  | — |  |  |  | — |  |  |  | 438 |
Results of the Periodic Tariff Review |  |  | 552 |  |  |  | — |  |  |  | — |  |  |  | 552 |
Amounts received |  |  | (623 | ) |  |  | — |  |  |  | — |  |  |  | (623 | )
Disposals |  |  | (7 | ) |  |  | — |  |  |  | (2 | ) |  |  | (9 | )
Transfers to financial assets |  |  | — |  |  |  | (60 | ) |  |  | — |  |  |  | (60 | )
Transfers to intangible assets |  |  | — |  |  |  | (883 | ) |  |  | (23 | ) |  |  | (906 | )
Contract assets arising from business combination |  |  | 108 |  |  |  | — |  |  |  | — |  |  |  | 108 |
Impairment |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Balances at December 31, 2020 |  |  | 3,745 |  |  |  | 1,142 |  |  |  | 93 |  |  |  | 4,980 |
Additions |  |  | 252 |  |  |  | 1,757 |  |  |  | 50 |  |  |  | 2,059 |
Inflation adjustment |  |  | 660 |  |  |  | — |  |  |  | — |  |  |  | 660 |
Results of the Periodic Tariff Review |  |  | 237 |  |  |  | — |  |  |  | — |  |  |  | 237 |
Amounts received |  |  | (612 | ) |  |  | — |  |  |  | — |  |  |  | (612 | )
Disposals |  |  | (5 | ) |  |  | — |  |  |  | (3 | ) |  |  | (8 | )
Impairment |  |  | — |  |  |  | (11 | ) |  |  | — |  |  |  | (11 | )
Transfers to financial assets |  |  | — |  |  |  | (110 | ) |  |  | — |  |  |  | (110 | )
Transfers to intangible assets |  |  | — |  |  |  | (851 | ) |  |  | (51 | ) |  |  | (902 | )
Contract assets arising from business combination |  |  | 81 |  |  |  | — |  |  |  | — |  |  |  | 81 |
Others additions |  |  | — |  |  |  | — |  |  |  | 6 |  |  |  | 6 |
Balances at December 31, 2021 |  |  | 4,358 |  |  |  | 1,927 |  |  |  | 95 |  |  |  | 6,380 |
Schedule of concession contracts | For transmission concessions, the consideration to be paid to the Company arises from the concession contracts n. 006/97, n. 079/00, n. 004/05 and n. 006/11, as follows: Schedule of concession contracts
|  | 2021 |  | 2020
Current |  |  |  |
Concession contract - 004/05 |  |  | 27 |  |  |  | 19 |
Concession contract - 079/00 |  |  | 39 |  |  |  | 29 |
Concession contract — 006/11 |  |  | 7 |  |  |  | — |
Concession contract - 006/97 |  |  |  |  |  |  |  |
Basic Network of the Existing System (BNES) |  |  | 318 |  |  |  | 533 |
Basic Network of New Facilities (BNNF) |  |  | 209 |  |  |  | 156 |
|  |  | 600 |  |  |  | 737 |
Non-current |  |  |  |  |  |  |  |
Concession contract - 004/05 |  |  | 89 |  |  |  | 91 |
Concession contract - 079/00 |  |  | 152 |  |  |  | 133 |
Concession contract — 006/11 |  |  | 74 |  |  |  | — |
Concession contract - 006/97 |  |  |  |  |  |  |  |
Basic Network of the Existing System (BNES) |  |  | 1,694 |  |  |  | 1,363 |
Basic Network of New Facilities (BNNF) |  |  | 1,749 |  |  |  | 1,421 |
|  |  | 3,758 |  |  |  | 3,008 |
|  |  | 4,358 |  |  |  | 3,745 |

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

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

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

X
- Definition The entire disclosure for service concession arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name SIC -Number 29 -IssueDate 2021-01-01 -Section Consensus -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=SIC&num=29&code=ifrs-tx-2021-en-r&doctype=Standard&dita_xref=SIC29_g6-7_TI -URIDate 2021-03-24 + Details
Name: | ifrs-full_DisclosureOfServiceConcessionArrangementsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration