XML 151 R135.htm IDEA: XBRL DOCUMENT v3.19.1

Bonus Programs - Additional Information (Detail) - MXN ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of bonus	50.00%
Percentage of annual bonus	50.00%
Compensation expense	$ 401	$ 351	$ 468
Fair value of shares held by trust	468	673
Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of economic value added	70.00%
Bottom of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of economic value added	30.00%

X

- Definition

Percentage of annual bonus.

+ References

No definition available.

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- Definition

Percentage of bonus.

+ References

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- Definition

Percentage Of Bonus Based On Economic Value Added

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- Definition

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.

+ References

No definition available.

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- Definition

The amount of employee expenses that the entity does not separately disclose in the same statement or note.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2018-01-01
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- Definition

The number of shares in the entity held by the entity or by its subsidiaries or associates. [Refer: Associates [member]; Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2018-01-01
-Paragraph 79
-Subparagraph a
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