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Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Main Investments in Common Shares of Associates (Detail) - MXN ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of associates [line items] |  |  |
Investments |  | $ 9,492 | $ 8,572
Book value at acquisition date |  | 7,218 | 6,957
Changes in stockholders' equity |  | $ 2,274 | 1,615
Camcem [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Camcem, S.A. de C.V. |
Activity |  | Cement |
Country |  | Mexico |
Investment, percentage |  | 40.10% |
Investments |  | $ 4,087 | 3,618
Concrete Supply Co. LLC [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Concrete Supply Co. LLC |
Activity |  | Concrete |
Country |  | United States |
Investment, percentage |  | 40.00% |
Investments |  | $ 1,306 | $ 1,192
Lehigh White Cement Company [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Lehigh White Cement Company |
Activity |  | Cement |
Country |  | United States |
Investment, percentage |  | 36.80% | 24.50%
Investments |  | $ 1,172 | $ 375
Akmenes Cementas AB [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Akmenes Cementas AB |
Activity |  | Cement |
Country |  | Lithuania |
Investment, percentage |  | 37.80% |
Investments |  | $ 527 | 585
ABC Capital, S.A. Institucion de Banca Multiple [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | ABC Capital, S.A. Institución de Banca Múltiple |
Activity |  | Financing |
Country |  | Mexico |
Investment, percentage | 33.90% | 0.00% |
Investments |  | $ 0 | 228
Societe Meridionale de Carrieres [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Société Méridionale de Carrières |
Activity |  | Aggregates |
Country |  | France |
Investment, percentage |  | 33.30% |
Investments |  | $ 318 | 367
Societe d Exploitation de Carrieres [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Société d'Exploitation de Carrières |
Activity |  | Aggregates |
Country |  | France |
Investment, percentage |  | 50.00% |
Investments |  | $ 306 | 318
Cemento Interocenico Sa [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Cemento Interoceánico S.A. |
Activity |  | Cement |
Country |  | Panama |
Investment, percentage |  | 25.00% |
Investments |  | $ 160 | 168
Other companies [member] |  |  |
Disclosure of associates [line items] |  |  |
Name of associate |  | Other companies |
Activity |  | 0 |
Country |  | 0 |
Investment, percentage |  | 0.00% |
Investments |  | $ 1,616 | $ 1,721

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