XML 114 R107.htm IDEA: XBRL DOCUMENT v3.19.1

Income and Social Contribution Taxes - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Disclosure Of Income And Social Contribution Taxes Recoverable [abstract]
Tax credits for income tax	25.00%
Social contribution tax rate	9.00%

X

- Definition

The applicable income tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2018-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_ii&doctype=Standard
-URIDate 2018-03-16

+ Details

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X

- Definition

Disclosure Of Income And Social Contribution Taxes Recoverable [abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
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X

- Definition

Social contribution tax rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	xcmig_
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Balance Type:	na
Period Type:	duration