The interest rate on borrowings. [Refer: Borrowings]

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-Name IFRS
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The maturity of borrowings. [Refer: Borrowings]

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The fair value of a credit derivative. [Refer: At fair value [member]; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2018-01-01
-Name IFRS
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The fair value, at acquisition date, of liabilities incurred (for example, a liability for contingent consideration) as consideration transferred in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2017-01-01
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Credit derivative out of the money percentage.

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Credit derivative out of the money value.

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Fair value measurement strike price per share.

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Premium paid for outstanding call options.

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Financial Instruments - Additional Information (Detail) $ / shares in Units, R$ / shares in Millions, R$ in Millions, $ in Millions, $ in Millions			12 Months Ended
	Dec. 06, 2016 MXN ($) $ / shares	Dec. 06, 2016 MXN ($) R$ / shares	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 MXN ($)	Dec. 06, 2016 BRL (R$)
Disclosure of detailed information about financial instruments [line items]
Value by which call option is out of the money				$ 82	$ 93
Vonpar [member] \| Series L share [member]
Disclosure of detailed information about financial instruments [line items]
Strike price per share \| $ / shares	$ 128.88
Promissory notes [member] \| Vonpar [member]
Disclosure of detailed information about financial instruments [line items]
Remaining balance paid	$ 6,534	$ 6,534	$ 6,503			$ 7,022	R$ 1,090
Annual rate	0.375%	0.375%	0.375%				0.375%
Maturity period	Three-year	Three-year
Estimated fair value of derivative	$ 343	$ 343	$ 242			$ 368
Percentage by which call option is out of the money			30.40%	30.40%	35.90%
Promissory notes [member] \| Vonpar [member] \| Series L share [member]
Disclosure of detailed information about financial instruments [line items]
Strike price per share \| (per share)	$ 178.5	$ 178.5
Options to purchase foreign currency [member]
Disclosure of detailed information about financial instruments [line items]
Premium paid for outstanding call options			$ 7