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Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Balance sheet Information by Geographic Segment (Detail) - MXN ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Disclosure of operating segments [line items] |  |
Total assets | $ 567,581 | $ 599,728
Total liabilities | 357,163 | 403,003
Net assets by segment | 210,418 | 196,725
Additions to fixed assets | 12,419 | 13,279
Mexico [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 71,521 | 70,502
Total liabilities | 23,574 | 20,752
Net assets by segment | 47,947 | 49,750
Additions to fixed assets | 2,133 | 1,651
United States [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 268,342 | 289,079
Total liabilities | 32,366 | 30,118
Net assets by segment | 235,976 | 258,961
Additions to fixed assets | 3,498 | 3,760
United Kingdom [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 34,881 | 32,573
Total liabilities | 24,160 | 22,914
Net assets by segment | 10,721 | 9,659
Additions to fixed assets | 1,010 | 599
France [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 19,536 | 17,764
Total liabilities | 7,360 | 6,829
Net assets by segment | 12,176 | 10,935
Additions to fixed assets | 372 | 379
Germany [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 9,095 | 8,470
Total liabilities | 6,848 | 6,694
Net assets by segment | 2,247 | 1,776
Additions to fixed assets | 441 | 507
Spain [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 25,731 | 27,264
Total liabilities | 3,543 | 3,206
Net assets by segment | 22,188 | 24,058
Additions to fixed assets | 553 | 490
Poland [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 5,486 | 5,046
Total liabilities | 3,086 | 2,072
Net assets by segment | 2,400 | 2,974
Additions to fixed assets | 230 | 181
Rest of Europe [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 16,281 | 15,615
Total liabilities | 3,627 | 3,221
Net assets by segment | 12,654 | 12,394
Additions to fixed assets | 321 | 258
Colombia [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 24,406 | 26,532
Total liabilities | 11,307 | 11,548
Net assets by segment | 13,099 | 14,984
Additions to fixed assets | 1,178 | 3,633
Panama [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 7,232 | 7,958
Total liabilities | 1,029 | 1,144
Net assets by segment | 6,203 | 6,814
Additions to fixed assets | 152 | 126
Costa Rica [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 1,869 | 1,928
Total liabilities | 646 | 691
Net assets by segment | 1,223 | 1,237
Additions to fixed assets | 42 | 73
Caribbean TCL [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 11,004 |
Total liabilities | 4,917 |
Net assets by segment | 6,087 |
Additions to fixed assets | 584 |
Rest of South, Central America and the Caribbean [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 11,329 | 12,545
Total liabilities | 4,366 | 4,133
Net assets by segment | 6,963 | 8,412
Additions to fixed assets | 357 | 441
Philippines [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 11,554 | 12,314
Total liabilities | 2,617 | 2,696
Net assets by segment | 8,937 | 9,618
Additions to fixed assets | 518 | 341
Egypt [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 4,603 | 5,513
Total liabilities | 1,776 | 2,907
Net assets by segment | 2,827 | 2,606
Additions to fixed assets | 418 | 381
Rest of Asia, Middle East and Africa [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 13,671 | 12,347
Total liabilities | 8,027 | 6,994
Net assets by segment | 5,644 | 5,353
Additions to fixed assets | 449 | 394
Other Locations [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 29,662 | 33,249
Total liabilities | 217,914 | 276,269
Net assets by segment | (188,252) | (243,020)
Additions to fixed assets | 163 | 65
Continuing Operations [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 566,203 | 578,699
Total liabilities | 357,163 | 402,188
Net assets by segment | 209,040 | 176,511
Additions to fixed assets | 12,419 | 13,279
Disposal groups classified as held for sale [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 1,378 | 21,029
Total liabilities | 0 | 815
Net assets by segment | 1,378 | 20,214
Additions to fixed assets | 0 | 0
Equity accounted investment [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 8,572 | 10,488
Equity accounted investment [member] | Mexico [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 241 | 490
Equity accounted investment [member] | United States [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 1,573 | 1,587
Equity accounted investment [member] | United Kingdom [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 107 | 104
Equity accounted investment [member] | France [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 1,055 | 909
Equity accounted investment [member] | Germany [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 85 | 74
Equity accounted investment [member] | Spain [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 0 | 13
Equity accounted investment [member] | Poland [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 9 | 10
Equity accounted investment [member] | Rest of Europe [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 158 | 270
Equity accounted investment [member] | Colombia [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 0 | 0
Equity accounted investment [member] | Panama [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 0 | 0
Equity accounted investment [member] | Costa Rica [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 0 | 0
Equity accounted investment [member] | Caribbean TCL [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 0 |
Equity accounted investment [member] | Rest of South, Central America and the Caribbean [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 31 | 28
Equity accounted investment [member] | Philippines [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 6 | 6
Equity accounted investment [member] | Egypt [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 1 | 1
Equity accounted investment [member] | Rest of Asia, Middle East and Africa [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 0 | 0
Equity accounted investment [member] | Other Locations [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 5,306 | 6,996
Equity accounted investment [member] | Continuing Operations [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 8,572 | 10,488
Equity accounted investment [member] | Disposal groups classified as held for sale [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 0 | 0
All other assets [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 559,009 | 589,240
All other assets [member] | Mexico [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 71,280 | 70,012
All other assets [member] | United States [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 266,769 | 287,492
All other assets [member] | United Kingdom [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 34,774 | 32,469
All other assets [member] | France [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 18,481 | 16,855
All other assets [member] | Germany [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 9,010 | 8,396
All other assets [member] | Spain [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 25,731 | 27,251
All other assets [member] | Poland [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 5,477 | 5,036
All other assets [member] | Rest of Europe [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 16,123 | 15,345
All other assets [member] | Colombia [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 24,406 | 26,532
All other assets [member] | Panama [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 7,232 | 7,958
All other assets [member] | Costa Rica [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 1,869 | 1,928
All other assets [member] | Caribbean TCL [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 11,004 |
All other assets [member] | Rest of South, Central America and the Caribbean [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 11,298 | 12,517
All other assets [member] | Philippines [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 11,548 | 12,308
All other assets [member] | Egypt [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 4,602 | 5,512
All other assets [member] | Rest of Asia, Middle East and Africa [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 13,671 | 12,347
All other assets [member] | Other Locations [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 24,356 | 26,253
All other assets [member] | Continuing Operations [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | 557,631 | 568,211
All other assets [member] | Disposal groups classified as held for sale [member] |  |
Disclosure of operating segments [line items] |  |
Total assets | $ 1,378 | $ 21,029

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