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Mergers, Acquisitions and Disposals - Allocation and Income Statement Effects (Details) - MXN ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Purchase price allocation |  |  |
Goodwill recognised as of acquisition date | $ 0 |  |
Noncurrent Assets [Member] |  |  |
Purchase price allocation |  |  |
Increase (decrease) in amounts allocated to assets in acquisition | (236) |  |
Goodwill [member] |  |  |
Purchase price allocation |  |  |
Increase (decrease) in amounts allocated to assets in acquisition | 2,903 |  |
Distribution Rights 1 [Member] |  |  |
Purchase price allocation |  |  |
Increase (decrease) in amounts allocated to assets in acquisition | (2,887) |  |
Other acquisitions [member] |  |  |
Purchase price allocation |  |  |
Total current assets |  | $ 4,058 |
Total non-current assets |  | 6,761 |
Total assets |  | 10,819 |
Total liabilities |  | (8,178) |
Net assets acquired |  | 2,641 |
Goodwill recognised as of acquisition date |  | 5,219 |
Non-controlling interest |  | (53) |
Total consideration transferred |  | 7,807 |
Amount to be paid |  | 147 |
Cash acquired |  | (389) |
Net cash paid |  | 7,271 |
Increase (decrease) in amounts allocated to assets in acquisition |  | 1,460 |
Additional consideration transferred |  | 137 |
Total revenues |  | 8,594 |
Income before income taxes |  | 37 |
Net income (loss) |  | 1 |
Other acquisitions [member] | Goodwill [member] |  |  |
Purchase price allocation |  |  |
Increase (decrease) in amounts allocated to assets in acquisition |  | 1,323 |
Other acquisitions [member] | Coca-Cola FEMSA [member] |  |  |
Purchase price allocation |  |  |
Total current assets |  |  | $ 1,864
Total non-current assets |  |  | 4,031
Total assets |  |  | 7,610
Total liabilities |  |  | (3,961)
Net assets acquired |  |  | 3,649
Goodwill recognised as of acquisition date |  |  | 2,903
Total consideration transferred |  |  | 6,552
Cash acquired |  |  | (860)
Net cash paid |  |  | 5,692
Total revenues |  |  | 4,628
Income before income taxes |  |  | 496
Net income (loss) |  |  | 413
Other acquisitions [member] | Customer relationships [member] |  |  |
Purchase price allocation |  |  |
Increase (decrease) in amounts allocated to assets in acquisition |  | 908 |
Other acquisitions [member] | Trademark rights [member] |  |  |
Purchase price allocation |  |  |
Increase (decrease) in amounts allocated to assets in acquisition |  | $ 389 |
Other acquisitions [member] | Distribution Rights 1 [Member] | Coca-Cola FEMSA [member] |  |  |
Purchase price allocation |  |  |
Intangible assets recognised as of acquisition date |  |  | $ 1,715
Acquisition Of WAXIE Sanitary Supply And North American Corporation [Member] |  |  |
Purchase price allocation |  |  |
Total current assets | 2,162 |  |
Total non-current assets | 1,954 |  |
Intangible assets recognised as of acquisition date | 10,698 |  |
Total assets | 14,814 |  |
Total liabilities | (3,523) |  |
Net assets acquired | 11,291 |  |
Goodwill recognised as of acquisition date | 10,241 |  |
Non-controlling interest | (1,299) |  |
Total consideration transferred | 20,233 |  |
Cash acquired | (138) |  |
Net cash paid | 20,095 |  |
Total revenues | 11,275 |  |
Income before income taxes | 525 |  |
Net income (loss) | $ 498 |  |

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