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Intangible and other long-term assets (Schedule of Balances) (Details) - MXN ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | $ 2,270,914 |  | $ 2,274,668 |
Other assets | 29,138 |  | 196,880 |
Intangible and other non-current assets, net | 2,300,052 |  | 2,471,548 | $ 2,544,273
Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 127,154 | [1] | 130,908 |
Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 2,143,760 | [2] | 2,143,760 |
Republic trade mark [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | $ 105,879 |  | $ 106,303 |
Amortization period (years) |  |  |  |
Kobe Tech contract [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross |  |  |  |
Amortization period (years) | 12 |  | 12 |
Customers list [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | $ 21,275 |  | $ 24,605 |
Amortization period (years) | 20 |  | 20 |
Customers list [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross |  |  |  |
Amortization period (years) | 9 |  | 9 |
Trademark San 42 [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | $ 329,600 | [3] | $ 329,600 |
Goodwill [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 1,814,160 | [3] | 1,814,160 |
Cost [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 4,643,365 |  | 4,644,543 |
Other assets | 29,138 |  | 196,880 |
Intangible and other non-current assets, net | 4,672,503 |  | 4,841,423 | 4,810,053
Cost [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 293,905 | [1] | 295,083 |
Cost [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 4,349,460 | [2] | 4,349,460 |
Cost [Member] | Republic trade mark [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 105,879 |  | 106,303 |
Cost [Member] | Kobe Tech contract [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 123,392 |  | 123,887 |
Cost [Member] | Customers list [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 64,634 |  | 64,893 |
Cost [Member] | Customers list [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 2,205,700 |  | 2,205,700 |
Cost [Member] | Trademark San 42 [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 329,600 | [3] | 329,600 |
Cost [Member] | Goodwill [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 1,814,160 | [3] | 1,814,160 |
Accumulated amortization [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 2,372,451 |  | 2,369,875 |
Other assets |  |  |  |
Intangible and other non-current assets, net | (2,372,451) |  | (2,369,875) | $ (2,265,780)
Accumulated amortization [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 166,751 | [1] | 164,175 |
Accumulated amortization [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 2,205,700 | [2] | 2,205,700 |
Accumulated amortization [Member] | Republic trade mark [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross |  |  |  |
Accumulated amortization [Member] | Kobe Tech contract [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 123,392 |  | 123,887 |
Accumulated amortization [Member] | Customers list [Member] | Republic [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | 43,359 |  | 40,288 |
Accumulated amortization [Member] | Customers list [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross | $ 2,205,700 |  | 2,205,700 |
Accumulated amortization [Member] | Trademark San 42 [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross |  |  |  |
Accumulated amortization [Member] | Goodwill [Member] | Grupo San [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Intangible and other non-current assets, gross |  |  |  |
[1] | Intangible assets from the Republic acquisition.
[2] | Intangible assets from the Grupo San acquisition.
[3] | The trade mark San 42 and the goodwill are presented net of impairment losses recorded in 2009 for $16,000 and $ 2,352,000, respectively.

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