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Mergers and Acquisitions - Summary of Selected Income Statement Information Related to Business Acquisition (Detail) - Aggregated Individually Immaterial Business Combinations $ in Millions	12 Months Ended
	Dec. 31, 2018 MXN ($)
Disclosure of Detailed Information About Business Combination [Line Items]
Total revenue	$ 4,628
Income before taxes	496
Net income	$ 413

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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.

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- Definition

The profit (loss) of the acquiree, since the acquisition date, included in the consolidated statement of comprehensive income. [Refer: Profit (loss)]

+ References

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- Definition

The amount of revenue of the acquiree since the acquisition date included in the consolidated statement of comprehensive income. [Refer: Revenue]

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- Definition

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