XML 35 R14.htm IDEA: XBRL DOCUMENT
v3.21.1

8. RECEIVABLES FROM CUSTOMERS, TRADERS AND POWER TRANSPORT CONCESSION HOLDERS | 12 Months Ended
--- | ---
Dec. 31, 2020
Disclosure of trade and other receivables [abstract] |
RECEIVABLES FROM CUSTOMERS, TRADERS AND POWER TRANSPORT CONCESSION HOLDERS |
8. | RECEIVABLES FROM CUSTOMERS, TRADERS AND POWER TRANSPORT CONCESSION HOLDERS
|  | Balances not yet due |  |  | Up to 90 days past due |  |  | More than 91 up to 360 days past due |  |  | More than 361 days past due |  |  | 2020 |  |  | 2019 |
Billed supply |  |  | 1,518 |  |  |  | 637 |  |  |  | 387 |  |  |  | 583 |  |  |  | 3,125 |  |  |  | 3,130 |
Unbilled supply |  |  | 1,145 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,145 |  |  |  | 1,204 |
Other concession holders – wholesale supply |  |  | 18 |  |  |  | 26 |  |  |  | 1 |  |  |  | 5 |  |  |  | 50 |  |  |  | 47 |
Other concession holders – wholesale supply, unbilled |  |  | 260 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 260 |  |  |  | 204 |
CCEE (Power Trading Chamber) |  |  | 21 |  |  |  | 189 |  |  |  | — |  |  |  | — |  |  |  | 210 |  |  |  | 386 |
Concession Holders – power transport |  |  | 45 |  |  |  | 14 |  |  |  | 17 |  |  |  | 85 |  |  |  | 161 |  |  |  | 187 |
Concession Holders – power transport, unbilled |  |  | 295 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 295 |  |  |  | 253 |
(–) Provision for doubtful receivables |  |  | (278 | ) |  |  | (12 | ) |  |  | (15 | ) |  |  | (407 | ) |  |  | (712 | ) |  |  | (810 | )
|  |  | 3,024 |  |  |  | 854 |  |  |  | 390 |  |  |  | 266 |  |  |  | 4,534 |  |  |  | 4,601 |
Current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,373 |  |  |  | 4,524 |
Non-current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 161 |  |  |  | 77 |
The Company’s exposure to credit risk related to customers and traders is provided in Note 31. The allowance for doubtful accounts is considered to be sufficient to cover any potential losses in the realization of accounts receivable, and the breakdown by type of customers is as follows:
|  | 2020 |  | 2019
Residential |  |  | 110 |  |  |  | 131 |
Industrial |  |  | 188 |  |  |  | 197 |
Commercial, services and others |  |  | 190 |  |  |  | 161 |
Rural |  |  | 30 |  |  |  | 32 |
Public authorities |  |  | 83 |  |  |  | 201 |
Public lighting |  |  | 2 |  |  |  | 2 |
Public services |  |  | 35 |  |  |  | 31 |
Charges for use of the network (TUSD) |  |  | 74 |  |  |  | 55 |
|  |  | 712 |  |  |  | 810 |
On July 31, 2020 Cemig D filed an application to the tax authority of State of Minas Gerais to offset debts for energy consumption and service owed by the direct and indirect administrations of Minas Gerais State, using amounts of ICMS tax payable, under Article 3 of Minas Gerais State Decree 47,908/2020, which regulated State Law 47,891/2020. The debts from the State of Minas Gerais that qualify for offset are those past due at June 30, 2019, estimated at R$240, which are still being analized by the tax authority of State of Minas Gerais. The offset will initiate after the tax authority ratification and conclusion of the debt recognition agreement. As a consequence, Cemig D reversed the impairment previously recognized for the debts owed by Minas Gerais state, in the amount of R$210. Changes in the allowance for doubtful accounts in 2020, 2019 and 2018 are as follows:
Balance at December 31, 2017 |  |  | 568 |
Effect of adoption of IFRS 9 on Jan. 1, 2018 |  |  | 150 |
Additions, net (Note 30 d) |  |  | 264 |
Write-off |  |  | (231 | )
Balance at December 31, 2018 |  |  | 751 |
Additions, net (Note 30 d) |  |  | 238 |
Disposals |  |  | (179 | )
Balance at December 31, 2019 |  |  | 810 |
Additions, net (Note 30 d) |  |  | 146 |
Disposals |  |  | (244 | )
Balance at December 31, 2020 |  |  | 712 |

X
- Definition Disclosure of trade and other receivables. + References No definition available. + Details
Name: | cig_DisclosureOfTradeAndOtherReceivablesAbstract
Namespace Prefix: | cig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of trade and other receivables. [Refer: Trade and other receivables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_10_e&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration