XML 22 R15.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Customers, Traders and Power Transport Concession Holders | 12 Months Ended
--- | ---
Dec. 31, 2017
Text block1 [abstract] |
Customers, Traders and Power Transport Concession Holders |
8. | CUSTOMERS, TRADERS AND POWER TRANSPORT CONCESSION HOLDERS
|  | Balances not yet due |  |  | Up to 90 days past due |  |  | More than 90 days past due |  |  | 2017 |  |  | 2016 |
Billed supply |  |  | 1,309 |  |  |  | 698 |  |  |  | 680 |  |  |  | 2,687 |  |  |  | 2,568 |
Unbilled supply |  |  | 994 |  |  |  | — |  |  |  | — |  |  |  | 994 |  |  |  | 920 |
Other concession holders – wholesale supply |  |  | 9 |  |  |  | 21 |  |  |  | (4 | ) |  |  | 26 |  |  |  | 80 |
Other concession holders – wholesale supply, unbilled |  |  | 283 |  |  |  | — |  |  |  | — |  |  |  | 283 |  |  |  | 343 |
CCEE (Wholesale Trading Exchange) |  |  | 255 |  |  |  | 119 |  |  |  | 8 |  |  |  | 382 |  |  |  | 1 |
Concession Holders – power transport |  |  | 75 |  |  |  | 5 |  |  |  | 79 |  |  |  | 159 |  |  |  | 124 |
Concession Holders – power transport, unbilled |  |  | 177 |  |  |  | — |  |  |  | — |  |  |  | 177 |  |  |  | 195 |
(–) Provision for doubtful receivables |  |  | — |  |  |  | — |  |  |  | (568 | ) |  |  | (568 | ) |  |  | (660 | )
|  |  | 3,102 |  |  |  | 843 |  |  |  | 195 |  |  |  | 4,140 |  |  |  | 3,571 |
Current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,885 |  |  |  | 3,425 |
Non-current assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 255 |  |  |  | 146 |
Note 30 presents the Company’s exposure to credit risk related to Customers and traders. 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 as follows:
|  | 2017 |  |  | 2016 |
Residential |  |  | 160 |  |  |  | 245 |
Industrial |  |  | 178 |  |  |  | 133 |
Commercial, services and others |  |  | 117 |  |  |  | 152 |
Rural |  |  | 17 |  |  |  | 24 |
Public authorities |  |  | 12 |  |  |  | 10 |
Public lighting |  |  | 5 |  |  |  | 5 |
Public services |  |  | 10 |  |  |  | 15 |
Charges for use of the network (TUSD) |  |  | 68 |  |  |  | 68 |
Others |  |  | 1 |  |  |  | 8 |
|  |  | 568 |  |  |  | 660 |
Changes in the allowance for doubtful accounts in 2017, 2016 and 2015 are as follows:
Balance at December 31, 2014 |  |  | 650 |
Additions, net |  |  | 175 |
Written off |  |  | (200 | )
Balance at December 31, 2015 |  |  | 625 |
Additions, net |  |  | 382 |
Written off |  |  | (347 | )
Balance at December 31, 2016 |  |  | 660 |
Additions, net |  |  | 248 |
Written off |  |  | (340 | )
Balance at December 31, 2017 |  |  | 568 |
Advances from clients Cemig GT receives advance payments for the sale of energy from certain customers. Advance payments related to services not yet provide are as follows:
Balance at December 31, 2016 |  |  | 181 |
Addition |  |  | 325 |
Supply completed |  |  | (318 | )
Monetary adjustment |  |  | 45 |
Balance at December 31, 2017 |  |  | 233 |
Advance payments are adjusted until the actual delivery of the power supply under the following terms:
2017 |  |  | 2017 |  |  | 2016 |
Counterparty |  | Specified period for billing |  |  | Index for adjusting prepaid amounts |  | GWh deliverable |  |  |
BTG Pactual |  |  | Jan. 2018 |  |  | 1.57% p.m. |  |  | 137 |  |  |  | 18 |  |  |  | 181 |
BTG Pactual |  |  | Jan. 2018 |  |  | 1.2% p.m. |  |  | 172 |  |  |  | 26 |  |  |  | — |
Deal Comercializadora |  |  | Jan. 2018 |  |  | 1.2% p.m. |  |  | 5 |  |  |  | 1 |  |  |  | — |
White Martins Gases Industriais Ltda. |  |  | Feb. 2018 to Mar. 2019 |  |  | 124% of CDI |  |  | 334 |  |  |  | 146 |  |  |  | — |
White Martins Gases Industriais Ltda. (1) |  |  | Feb. 2018 to Jul. 2019 |  |  | 124% of CDI |  |  | — |  |  |  | 42 |  |  |  | — |
|  |  |  |  |  |  |  |  |  |  |  |  | 233 |  |  |  | 181 |
(1) | Contracts signed with Cemig D, relating to the billing of Contract for Use of the Distribution System (CUSD), containing the components: transportation and other charges.
Revenue from advanced sales of power supply is recognized in the Statement of income only when the supply actually take place.

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 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block1 [abstract] + References No definition available. + Details
Name: | xcmig_TextBlock1Abstract
Namespace Prefix: | xcmig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration