Disclosure of Investments in Associates and Joint Ventures [line items]

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- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]]

+ References

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- Definition

The country in which a joint venture of the entity is incorporated. [Refer: Joint ventures [member]]

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The country in which an associate of the entity is incorporated. [Refer: Associates [member]]

+ References

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- Definition

The description of the nature of the entity's relationship with an associate (for example, describing the nature of the activities of the associate and whether they are strategic to the entity's activities). [Refer: Associates [member]]

+ References

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

The description of the nature of the entity's relationship with a joint venture (for example, describing the nature of the activities of the joint venture and whether they are strategic to the entity's activities). [Refer: Joint ventures [member]]

+ References

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- Definition

The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

+ References

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- Definition

The amount of notes and debentures issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

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

+ References

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- Definition

The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

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- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Joint ventures [member]]

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Equity Accounted Investees - Summary of Equity Accounted Investees (Detail) R$ in Millions, $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 MXN ($)	Dec. 31, 2020 MXN ($)	Nov. 01, 2019 BRL (R$)	Dec. 31, 2018 MXN ($)
Disclosure of Investments in Associates and Joint Ventures [line items]
Ownership Percentage, Associate	14.80%	14.80%
Carrying Value	$ 4,940	$ 97,470	$ 98,270		$ 94,315
Raizen Convenincias [Member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Percentage of voting equity interests acquired				50.00%
Net cash paid \| R$				R$ 357
Notes payable on acquisition \| R$				R$ 367
Promotora Industrial Azucarera, S.A. de C.V. ("PIASA") [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Sugar production
Place of Incorporation	Mexico
Ownership Percentage, Associate	36.40%	36.40%
Carrying Value		$ 3,274	3,335
Industria Envasadora De Queretaro SA De CVIEQSA [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Canned bottling
Place of Incorporation	Mexico
Ownership Percentage, Associate	26.50%	26.50%
Carrying Value		$ 194	192
Industria Mexicana de Reciclaje, S.A. de C.V. ("IMER") [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Recycling
Place of Incorporation	Mexico
Ownership Percentage, Associate	35.00%	35.00%
Carrying Value		$ 121	121
Jugos del Valle, S.A.P.I. de C.V. [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Beverages
Place of Incorporation	Mexico
Ownership Percentage, Associate	28.80%	28.80%
Carrying Value		$ 1,929	1,945
Leao Alimentos e Bebidas, LTDA [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Beverages
Place of Incorporation	Brazil
Ownership Percentage, Associate	24.70%	24.70%
Carrying Value		$ 1,931	446
Other Investments In Coca Cola FEMSAs Companies [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Various
Place of Incorporation	Various
Carrying Value		793	683
Raizen Convenincias [Member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Proximity
Place of Incorporation	Brazil
Ownership Percentage, Associate	50.00%
Carrying Value		3,410	2,763
Compania Panamena de Bebidas, S.A.P.I. de C.V. [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Carrying Value		$ 486
Principal Activity	Beverages
Place of Incorporation	Mexico
Ownership Percentage, Joint venture		50.00%
Dispensadoras de Cafe, S.A.P.I. de C.V. [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Carrying Value		$ 172	181
Principal Activity	Services
Place of Incorporation	Mexico
Ownership Percentage, Joint venture	50.00%	50.00%
Fountain Agua Mineral, LTDA [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Carrying Value		$ 851	720
Principal Activity	Beverages
Place of Incorporation	Brazil
Ownership Percentage, Joint venture	50.00%	50.00%
OtherInvestments [Member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Various
Place of Incorporation	Various
Carrying Value		$ 520	593
Heineken Group
Disclosure of Investments in Associates and Joint Ventures [line items]
Principal Activity	Beverages
Place of Incorporation	The Netherlands
Ownership Percentage, Associate	14.76%	14.76%
Carrying Value		$ 83,789	$ 87,291
Heineken NV
Disclosure of Investments in Associates and Joint Ventures [line items]
Ownership Percentage, Associate	8.63%	8.63%
Heineken Holding N.V. [member]
Disclosure of Investments in Associates and Joint Ventures [line items]
Ownership Percentage, Associate	12.26%	12.26%