XML 107 R100.htm IDEA: XBRL DOCUMENT v3.19.1

Customers, Traders and Power Transport Concession Holders - Summary of Trade and Other Receivables (Detail) - BRL (R$) R$ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of trade and other receivables [Line Items]
Billed supply	R$ 2,989	R$ 2,687
Unbilled supply	1,048	994
Other concession holders - wholesale supply	47	26
Other concession holders - wholesale supply, unbilled	282	283
CCEE (Wholesale Trading Exchange)	166	382
Concession Holders - power transport	180	159
Concession Holders - power transport, unbilled	212	177
Provision for doubtful receivables	(751)	(568)	R$ (660)	R$ (625)
Trade and other receivables	4,173	4,140
Current assets	4,092	3,885
Non-current assets	81	R$ 255
Balances not yet due [member]
Disclosure of trade and other receivables [Line Items]
Billed supply	1,345
Unbilled supply	1,048
Other concession holders - wholesale supply	7
Other concession holders - wholesale supply, unbilled	282
CCEE (Wholesale Trading Exchange)	1
Concession Holders - power transport	76
Concession Holders - power transport, unbilled	212
Provision for doubtful receivables	(179)
Trade and other receivables	2,792
Up to 90 days past due [member]
Disclosure of trade and other receivables [Line Items]
Billed supply	759
Other concession holders - wholesale supply	36
CCEE (Wholesale Trading Exchange)	158
Concession Holders - power transport	15
Provision for doubtful receivables	(21)
Trade and other receivables	947
More than 91 up to 360 days past due [member]
Disclosure of trade and other receivables [Line Items]
Billed supply	393
Other concession holders - wholesale supply	2
Concession Holders - power transport	3
Provision for doubtful receivables	(20)
Trade and other receivables	378
More Than 361 days past due [member]
Disclosure of trade and other receivables [Line Items]
Billed supply	492
Other concession holders - wholesale supply	2
CCEE (Wholesale Trading Exchange)	7
Concession Holders - power transport	86
Provision for doubtful receivables	(531)
Trade and other receivables	R$ 56

X

- Definition

The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_16&doctype=Standard&book=b
-URIDate 2018-03-16

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Namespace Prefix:	ifrs-full_
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Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 54
-Subparagraph h
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_h&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 78
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_b&doctype=Standard
-URIDate 2018-03-16

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Namespace Prefix:	ifrs-full_
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Balance Type:	debit
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X

- Definition

Billed supply.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Concession holders power transport unbilled.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Concession holders transport of electricity.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Current consumers and traders and concession holders transport of electricity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Disclosure of trade and other receivables.

+ References

No definition available.

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X

- Definition

Electricity wholesale trading exchange receivables.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Noncurrent customers and traders and concession holders transport of electricity.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Unbilled supply.

+ References

No definition available.

+ Details

Name:	xcmig_UnbilledSupply
Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Wholesale supply to other concession holders.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Wholesale supply to other concession holders unbilled.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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X

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