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Income Taxes - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory income tax rate in Mexico	30.00%	30.00%	30.00%
Effective income tax rate for foreign jurisdiction	31.00%	15.00%	20.00%
Percentage of share with voting right	80.00%
Brazil [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net operating loss carryforwards	$ 59,695,441
Effective taxable income percentage carryforward	30.00%
Effective taxable income percentage	25.00%
Corporate tax rate	34.00%
Austria [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net operating loss carryforwards	$ 20,128,833
operating loss carryforward effective tax rate annual limit	75.00%
Mexico [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Accumulated tax loss	$ 6,043,603
Bottom of range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory tax rates	21.00%
Top of range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory tax rates	40.00%
CUCA [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Contributed capital account	$ 536,278,717	$ 510,832,194
CUFIN [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Contributed capital account	$ 276,185,284	$ 225,105,342

X

- Definition

Amount of accumulated tax loss.

+ References

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- Definition

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- Definition

Corporate income tax rate.

+ References

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- Definition

Effective income tax rate.

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- Definition

effective income tax rate maximum limit.

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- Definition

net operating loss carryforwards

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- Definition

Statutory tax rate percentage.

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- Definition

Tax rate of estimated tax losses carryforward.

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- 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
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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the application of foreign tax rates. [Refer: Average effective tax rate; Applicable tax rate]

+ References

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