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Intangible Assets - Summary of Reconciliation of Changes in Intangible Assets and Goodwill (Detail) $ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2017 MXN ($) | Dec. 31, 2017 USD ($) | [1] | Dec. 31, 2016 MXN ($) | Dec. 31, 2015 MXN ($)
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | $ 153,268 |  | $ 108,341 |
Ending balance | 154,093 | $ 7,846 | 153,268 | $ 108,341
Right to produce and distribute trademark products [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 85,338 |  | 66,392 |
Ending balance | 91,901 |  | 85,338 | 66,392
Goodwill [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 51,857 |  | 33,850 |
Ending balance | 43,449 |  | 51,857 | 33,850
Trademark rights [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 6,225 |  | 1,481 |
Ending balance | 7,185 |  | 6,225 | 1,481
Other indefinite lived intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 2,151 |  | 1,246 |
Ending balance | 2,257 |  | 2,151 | 1,246
Total unamortized intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 145,571 |  | 102,969 |
Ending balance | 144,793 |  | 145,571 | 102,969
Technology costs and management systems [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 4,187 |  | 3,271 |
Ending balance | 3,841 |  | 4,187 | 3,271
Systems in Development [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 798 |  | 683 |
Ending balance | 1,291 |  | 798 | 683
Alcohol licenses [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 1,040 |  | 923 |
Ending balance | 1,180 |  | 1,040 | 923
Other [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 1,672 |  | 495 |
Ending balance | 2,988 |  | 1,672 | 495
Total amortized intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 7,697 |  | 5,372 |
Ending balance | 9,300 |  | 7,697 | 5,372
Cost [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 156,283 |  | 110,663 | 103,491
Purchases | 3,344 |  | 1,296 | 1,219
Acquisitions from business combinations | 4,375 |  | 23,679 | 13,134
Changes in fair value of past acquisitions | (306) |  | 2,372 |
Disposals | 110 |  | (360) | (469)
Effect of movements in exchange rates | (3,667) |  | 17,181 | (7,849)
Changes in value on the recognition of inflation effects | (552) |  | 1,361 | 1,109
Venezuela deconsolidation effect | (139) |  |  |
Capitalization of borrowing costs |  |  | 11 | 28
Ending balance | 159,448 |  | 156,283 | 110,663
Cost [member] | Right to produce and distribute trademark products [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 85,338 |  | 66,392 | 70,263
Purchases | 1,288 |  |  |
Acquisitions from business combinations | 4,144 |  | 9,602 |
Changes in fair value of past acquisitions | 5,167 |  |  |
Effect of movements in exchange rates | (2,563) |  | 8,124 | (4,992)
Changes in value on the recognition of inflation effects | (727) |  | 1,220 | 1,121
Ending balance | 92,647 |  | 85,338 | 66,392
Cost [member] | Goodwill [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 51,857 |  | 33,850 | 25,174
Acquisitions from business combinations | 140 |  | 12,276 | 11,369
Changes in fair value of past acquisitions | (7,022) |  | (2,385) |
Effect of movements in exchange rates | (1,526) |  | 8,116 | (2,693)
Ending balance | 43,449 |  | 51,857 | 33,850
Cost [member] | Trademark rights [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 6,225 |  | 1,481 | 1,514
Purchases |  |  | 3 |
Acquisitions from business combinations | 5 |  | 239 |
Changes in fair value of past acquisitions | 836 |  | 4,315 |
Effect of movements in exchange rates | 119 |  | 187 | (33)
Ending balance | 7,185 |  | 6,225 | 1,481
Cost [member] | Other indefinite lived intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 2,187 |  | 1,282 | 63
Purchases | 6 |  |  |
Acquisitions from business combinations |  |  | 1,067 | 1,238
Changes in fair value of past acquisitions | 9 |  | (554) |
Effect of movements in exchange rates | 91 |  | 392 | (19)
Ending balance | 2,293 |  | 2,187 | 1,282
Cost [member] | Total unamortized intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 145,607 |  | 103,005 | 97,014
Purchases | 1,294 |  | 3 |
Acquisitions from business combinations | 4,289 |  | 23,184 | 12,607
Changes in fair value of past acquisitions | (1,010) |  | 1,376 |
Effect of movements in exchange rates | (3,879) |  | 16,819 | (7,737)
Changes in value on the recognition of inflation effects | (727) |  | 1,220 | 1,121
Ending balance | 145,574 |  | 145,607 | 103,005
Cost [member] | Technology costs and management systems [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 6,124 |  | 4,890 | 3,225
Purchases | 464 |  | 345 | 480
Acquisitions from business combinations | 6 |  | 318 | 328
Changes in fair value of past acquisitions | (188) |  |  |
Transfer of completed development systems | 412 |  | 304 | 1,085
Disposals | 110 |  | (336) | (150)
Effect of movements in exchange rates | 175 |  | 451 | (94)
Changes in value on the recognition of inflation effects |  |  | 141 | (12)
Capitalization of borrowing costs |  |  | 11 | 28
Ending balance | 7,103 |  | 6,124 | 4,890
Cost [member] | Systems in Development [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 798 |  | 683 | 1,554
Purchases | 920 |  | 609 | 458
Acquisitions from business combinations |  |  | 3 |
Transfer of completed development systems | (412) |  | (304) | (1,085)
Disposals |  |  |  | (242)
Effect of movements in exchange rates | (15) |  | (193) | (2)
Ending balance | 1,291 |  | 798 | 683
Cost [member] | Alcohol licenses [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 1,416 |  | 1,225 | 1,027
Purchases | 221 |  | 191 | 198
Ending balance | 1,637 |  | 1,416 | 1,225
Cost [member] | Other [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 2,338 |  | 860 | 671
Purchases | 445 |  | 146 | 83
Acquisitions from business combinations | 80 |  | 174 | 199
Changes in fair value of past acquisitions | 892 |  | 1,078 |
Disposals |  |  | (24) | (77)
Effect of movements in exchange rates | 52 |  | 104 | (16)
Changes in value on the recognition of inflation effects | 175 |  |  |
Venezuela deconsolidation effect | (139) |  |  |
Ending balance | 3,843 |  | 2,338 | 860
Cost [member] | Total amortized intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | 10,676 |  | 7,658 | 6,477
Purchases | 2,050 |  | 1,291 | 1,219
Acquisitions from business combinations | 86 |  | 495 | 527
Changes in fair value of past acquisitions | 704 |  | 1,078 |
Disposals | 110 |  | (360) | (469)
Effect of movements in exchange rates | 212 |  | 362 | (112)
Changes in value on the recognition of inflation effects | 175 |  | 141 | (12)
Venezuela deconsolidation effect | (139) |  |  |
Capitalization of borrowing costs |  |  | 11 | 28
Ending balance | 13,874 |  | 10,676 | 7,658
Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | (3,015) |  | (2,322) | (1,964)
Amortization expense | (1,259) |  | (1,006) | (604)
Impairment losses | (110) |  |  |
Disposals |  |  | 349 | 168
Effect of movements in exchange rates | (106) |  | (36) | 78
Venezuela deconsolidation effect | (120) |  |  |
Venezuela impairment | (745) |  |  |
Ending balance | (5,354) |  | (3,015) | (2,322)
Accumulated depreciation, amortisation and impairment [member] | Right to produce and distribute trademark products [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Venezuela impairment | (745) |  |  |
Ending balance | (745) |  |  |
Accumulated depreciation, amortisation and impairment [member] | Other indefinite lived intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | (36) |  | (36) | (36)
Ending balance | (36) |  | (36) | (36)
Accumulated depreciation, amortisation and impairment [member] | Total unamortized intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | (36) |  | (36) | (36)
Venezuela impairment | (745) |  |  |
Ending balance | (781) |  | (36) | (36)
Accumulated depreciation, amortisation and impairment [member] | Technology costs and management systems [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | (1,937) |  | (1,619) | (1,343)
Amortization expense | (961) |  | (630) | (461)
Impairment losses | (110) |  |  |
Disposals |  |  | 313 | 126
Effect of movements in exchange rates | (254) |  | (1) | 59
Ending balance | (3,262) |  | (1,937) | (1,619)
Accumulated depreciation, amortisation and impairment [member] | Alcohol licenses [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | (376) |  | (302) | (235)
Amortization expense | (81) |  | (74) | (67)
Ending balance | (457) |  | (376) | (302)
Accumulated depreciation, amortisation and impairment [member] | Other [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | (666) |  | (365) | (350)
Amortization expense | (217) |  | (302) | (76)
Disposals |  |  | 36 | 42
Effect of movements in exchange rates | 148 |  | (35) | 19
Venezuela deconsolidation effect | (120) |  |  |
Ending balance | (855) |  | (666) | (365)
Accumulated depreciation, amortisation and impairment [member] | Total amortized intangible assets [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |  |  |
Beginning balance | (2,979) |  | (2,286) | (1,928)
Amortization expense | (1,259) |  | (1,006) | (604)
Impairment losses | (110) |  |  |
Disposals |  |  | 349 | 168
Effect of movements in exchange rates | (106) |  | (36) | 78
Venezuela deconsolidation effect | (120) |  |  |
Ending balance | $ (4,574) |  | $ (2,979) | $ (2,286)
[1] | Convenience translation to U.S. dollars ($) - See Note 2.2.3

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