Financial risk management: Short term liquidity (Details) - MXN ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial risk management:
Current assets	$ 18,080,170	$ 11,662,100
Current liabilities	5,563,973	3,786,398
Short term position (liquidity)	$ 12,516,197	$ 7,875,702

Expiry date 2023-01-01: The amount of liabilities that: (a) the entity expects to settle in its normal operating cycle; (b) the entity holds primarily for the purpose of trading; (c) are due to be settled within twelve months after the reporting period; or (d) the entity does not have an unconditional right to defer settlement for at least twelve months after the reporting period. Effective 2023-01-01: The amount of liabilities that: (a) the entity expects to settle in its normal operating cycle; (b) the entity holds primarily for the purpose of trading; (c) are due to be settled within twelve months after the reporting period; or (d) the entity does not have the right at the end of the reporting period to defer settlement for at least twelve months after the reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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