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Income Taxes - Tax (charge) credit relating to components of other comprehensive income (Details) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Other comprehensive loss, Before Tax |  |  |
Remeasurement of post-employment benefit obligations | $ (344,313) | $ (247,092) | $ (97,086)
Remeasurement of post-employment benefit obligations of assets held for sale |  | (3,445) |
Exchange differences on translating foreign operations | 133,522 | (98,422) | (859,032)
Derivative financial instruments cash flow hedges, Before Tax | (1,370,145) | (1,521,912) | 174,532
Warrants exercisable for common stock of UHI | (21,899,164) | 257,306 | (1,347,698)
Opend Ended Fund, Before Tax | (904,423) | (351,202) | 215,957
Other equity instruments, Before Tax | (353,496) | (794,624) | 603,766
Other financial assets, Before Tax |  | 111 | (111)
Share of loss of associates and joint ventures, Before Tax | (61,033) | (236,159) | (47,313)
Other comprehensive loss before income taxes | (24,799,052) | (2,995,439) | (1,356,985)
Other comprehensive loss, Tax (Charge) Credit |  |  |
Remeasurement of post-employment benefit obligations, Tax (Charge) Credit | 103,294 | 74,128 | 230,623
Remeasurement of post-employment benefit obligations of assets held for sale, Tax (Charge) Credit |  | 1,033 |
Exchange differences on translating foreign operations, Tax (Charge) Credit | 408,221 | (101,323) | (587)
Derivative financial instruments cash flow hedges, Tax (Charge) Credit | 411,044 | 456,574 | (52,359)
Warrants exercisable for common stock of UHI, Tax (Charge) Credit | 6,639,400 | (77,192) | 404,309
Open Ended Fund, Tax (Charge) Credit | 268,906 | 112,590 | (64,787)
Other equity instruments, Tax (Charge) Credit | 106,049 | 238,387 | (181,130)
Other financial assets, Tax (Charge) Credit |  | (33) | 33
Other comprehensive income, Tax (Charge) Credit | 7,936,914 | 704,164 | 336,102
Current tax | 408,221 | (449,933) | (587)
Deferred tax | 7,528,693 | 1,154,097 | 336,689
Other comprehensive loss, After Tax |  |  |
Remeasurement of post-employment benefit obligations, After Tax | (241,019) | (172,964) | 133,537
Remeasurement of post-employment benefit obligations of assets held for sale, after tax |  | (2,412) |
Exchange differences on translating foreign operations, After Tax | 541,743 | (199,745) | (859,619)
Derivative financial instruments cash flow hedges, After Tax | (959,101) | (1,065,338) | 122,173
Warrants exercisable for common stock of UHI, After Tax | (15,259,764) | 180,114 | (943,389)
Open Ended Fund, After Tax | (635,517) | (238,612) | 151,170
Other equity instruments, After Tax | (247,447) | (556,237) | 422,636
Other financial assets, After Tax |  | 78 | (78)
Share of loss of associates and joint ventures, After Tax | (61,033) | (236,159) | (47,313)
Total other comprehensive income | (16,862,138) | (2,291,275) | (1,020,883)
Deferred income tax liability related to associates and joint ventures | $ 44,820 | $ 1,029,209 |
Deferred Tax Expense (Income) Relating to Remeasurement of Post Employment Benefit Obligations |  |  | $ 201,497

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- Definition The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph ab -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_ab&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_90&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to exchange differences on the translation of financial statements of foreign operations. [Refer: Other comprehensive income; Reserve of exchange differences on translation] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph ab -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_ab&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_90&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to financial assets measured at fair value through other comprehensive income. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph ab -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_ab&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_90&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to remeasurements of defined benefit plans. [Refer: Other comprehensive income; Reserve of remeasurements of defined benefit plans; Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph ab -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_ab&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_90&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of income and expense (including reclassification adjustments) that is not recognised in profit or loss as required or permitted by IFRSs. [Refer: IFRSs [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 106 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_106_d_ii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph B12 -Subparagraph b -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B12_b_viii&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 81A -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_81A_b&doctype=Standard -URIDate 2020-01-01 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 91 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_91_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of other comprehensive income, before tax, related to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income, before tax] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 91 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_91_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of other comprehensive income, before tax, related to financial assets measured at fair value through other comprehensive income. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 20 -Subparagraph a -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_a_viii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 91 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_91_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to open ended fund. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income] + References No definition available. + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to other equity instruments measured at fair value through other comprehensive income. + References No definition available. + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to remeasurements of defined benefit plans, held for sale. + References No definition available. + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to warrants issued, net of hedge. + References No definition available. + Details
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- Definition The amount of other comprehensive income, before tax, related to gains (losses) on remeasurements of defined benefit plans on assets held for sale. + References No definition available. + Details
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- Definition The amount of other comprehensive income, before tax, related to warrants issued, net of hedge. + References No definition available. + Details
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- Definition Definition not applicable. + References No definition available. + Details
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- Definition The amount of other comprehensive income, net of tax, related to other equity instruments measured at fair value through other comprehensive income. + References No definition available. + Details
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- Definition The amount of other comprehensive income, net of tax, related to gains (losses) on remeasurements of defined benefit plans on assets held for sale. + References No definition available. + Details
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Period Type: | duration

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- Definition The amount of other comprehensive income, net of tax, related to open ended fund. + References No definition available. + Details
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- Definition The amount of other comprehensive income, net of tax, related to warrants issued, net of hedge. + References No definition available. + Details
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