| Disclosure of income tax [text block] | ||
| Major components of tax expense (income) [abstract] | ||
| Current tax expense (income) and adjustments for current tax of prior periods [abstract] | ||
| Current tax expense (income) | ||
| Adjustments for current tax of prior periods | ||
| Current tax expense (income) and adjustments for current tax of prior periods | ||
| Deferred tax expense (income) relating to origination and reversal of temporary differences | ||
| Deferred tax expense (income) relating to tax rate changes or imposition of new taxes | ||
| Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce current tax expense | ||
| Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce deferred tax expense | ||
| Deferred tax expense arising from write-down or reversal of write-down of deferred tax asset | ||
| Tax expense (income) relating to changes in accounting policies and errors included in profit or loss | ||
| Adjustments for deferred tax of prior periods | ||
| Other components of deferred tax expense (income) | ||
| Tax expense (income) | ||
| Current and deferred tax relating to items charged or credited directly to equity [abstract] | ||
| Current tax relating to items credited (charged) directly to equity | ||
| Deferred tax relating to items credited (charged) directly to equity | ||
| Current and deferred tax relating to items credited (charged) directly to equity | ||
| Income tax relating to components of other comprehensive income [abstract] | ||
| Income tax relating to exchange differences on translation included in other comprehensive income | ||
| Income tax relating to available-for-sale financial assets included in other comprehensive income | ||
| Income tax relating to cash flow hedges included in other comprehensive income | ||
| Income tax relating to changes in revaluation surplus included in other comprehensive income | ||
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | ||
| Income tax relating to investments in equity instruments included in other comprehensive income | ||
| Income tax relating to hedges of net investments in foreign operations included in other comprehensive income | ||
| Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability included in other comprehensive income | ||
| Income tax relating to hedges of investments in equity instruments included in other comprehensive income | ||
| Income tax relating to change in value of time value of options included in other comprehensive income | ||
| Income tax relating to change in value of forward elements of forward contracts included in other comprehensive income | ||
| Income tax relating to change in value of foreign currency basis spreads included in other comprehensive income | ||
| Income tax relating to financial assets measured at fair value through other comprehensive income included in other comprehensive income | ||
| Income tax relating to components of other comprehensive income | ||
| Income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method | ||
| Tax expense (income) of discontinued operation [abstract] | ||
| Tax expense (income) relating to gain (loss) on discontinuance | ||
| Tax expense (income) relating to profit (loss) from ordinary activities of discontinued operations | ||
| Explanation of changes in applicable tax rates to previous accounting period | ||
| Description of expiry date of deductible temporary differences, unused tax losses and unused tax credits | ||
| Diferencias temporarias deducibles por las que no se reconoce activo por impuestos diferidos | ||
| Pérdidas fiscales no utilizadas para las que no se han reconocido activos por impuestos diferidos | ||
| Créditos fiscales no utilizados para los que no se han reconocido activos por impuestos diferidos | ||
| Diferencias temporarias relacionadas con inversiones en subsidiarias, sucursales y asociadas, y con participaciones en acuerdos conjuntos, para los cuales no se han reconocido pasivos por impuestos diferidos | ||
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] | ||
| Accounting profit | ||
| Tax expense (income) at applicable tax rate | ||
| Tax effect of revenues exempt from taxation | ||
| Tax effect of expense not deductible in determining taxable profit (tax loss) | ||
| Tax effect of impairment of goodwill | ||
| Tax effect of tax losses | ||
| Tax effect of foreign tax rates | ||
| Tax effect from change in tax rate | ||
| Other tax effects for reconciliation between accounting profit and tax expense (income) | ||
| Tax expense (income) | ||
| Reconciliation of average effective tax rate and applicable tax rate [abstract] | ||
| Accounting profit | ||
| Applicable tax rate | ||
| Tax rate effect of revenues exempt from taxation | ||
| Tax rate effect of expense not deductible in determining taxable profit (tax loss) | ||
| Tax rate effect of impairment of goodwill | ||
| Tax rate effect of tax losses | ||
| Tax rate effect of foreign tax rates | ||
| Tax rate effect from change in tax rate | ||
| Tax rate effect of adjustments for current tax of prior periods | ||
| Other tax rate effects for reconciliation between accounting profit and tax expense (income) | ||
| Average effective tax rate | ||