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Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Millions, $ in Millions |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 30, 2017 MXN ($) $ / shares shares | Mar. 31, 2016 MXN ($) $ / shares shares | Mar. 26, 2015 MXN ($) $ / shares shares | Dec. 31, 2017 MXN ($) shares | Dec. 31, 2016 MXN ($) shares | Dec. 31, 2015 MXN ($) | Dec. 31, 2017 USD ($) shares | Dec. 31, 2017 MXN ($) shares | Dec. 31, 2016 USD ($) shares | Dec. 31, 2016 MXN ($) shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2015 MXN ($) shares
Disclosure of Classes of Share Capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Investment in CPOs |  |  |  | $ 301 | $ 327 |  |  |  |  |  |  |
Investment in CPOs | shares |  |  |  | 20,541,277 | 19,751,229 |  |  |  |  |  |  |
Increase in variable common stock issued through the capitalization of retained earning | shares | 1,687,000,000 | 1,616,000,000 | 1,500,000,000 |  |  |  |  |  |  |  |  |
Increase in common stock | $ 5 | $ 4 | $ 4 |  |  |  |  |  |  |  |  |
Nominal value of common stock per CPO | $ / shares | $ 0.00833 | $ 0.00833 | $ 0.00833 |  |  |  |  |  |  |  |  |
Additional paid-in capital | $ 9,459 | $ 6,966 | $ 7,613 |  |  |  |  | $ 140,483 |  | $ 123,174 |  |
Increase in variable common stock issued to preserve the anti-dilutive rights of note holders | shares | 258,000,000 | 297,000,000 | 297,000,000 |  |  |  |  |  |  |  |  |
Percentage of net income allocation toward legal reserve |  |  |  | 5.00% |  |  |  |  |  |  |  |
Legal reserve |  |  |  |  |  |  |  | 1,804 |  |  |  |
Non-controlling interest and perpetual debentures |  |  |  |  |  |  |  | 30,879 |  | 28,951 |  |
Other equity reserve |  |  |  |  |  |  |  | 13,483 |  | 24,793 |  |
Additional paid-in capital [member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Classes of Share Capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital |  |  |  |  |  |  |  | 817 |  | 742 |  | $ 655
Non-controlling Interest [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Classes of Share Capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interest and perpetual debentures |  |  |  |  |  |  |  | 22,095 |  | 19,876 |  |
Net income attributable to noncontroling interest |  |  |  | $ 1,417 | $ 1,173 | $ 923 |  |  |  |  |  |
Interest Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Classes of Share Capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Other equity reserve |  |  |  |  |  |  |  | 482 |  | 507 |  | 432
Caribbean TCL [member] | Trinidad Cement Limited [member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Classes of Share Capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling ownership interest percentage |  |  |  | 30.20% |  |  |  |  |  |  |  |
Perpetual Subordinated Bonds [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Classes of Share Capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interest and perpetual debentures |  |  |  |  |  |  | $ 447 | $ 8,784 | $ 438 | $ 9,075 | $ 440 | $ 7,581
CPO [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of Classes of Share Capital [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Increase in variable common stock issued through the capitalization of retained earning | shares | 562,000,000 | 539,000,000 | 500,000,000 |  |  |  |  |  |  |  |  |
Increase in variable common stock issued to preserve the anti-dilutive rights of note holders | shares | 86,000,000 | 99,000,000 | 99,000,000 |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  |  |  | 53,200,000 | 53,200,000 | 53,900,000 | 53,900,000 | 49,200,000 | 49,200,000

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