| Activos [miembro] | |||||||||||||||
| Activos intangibles distintos a la plusvalía y plusvalía [miembro] | Methods of generation [member] | ||||||||||||||
| Intangible assets other than goodwill [member] | Goodwill [member] | Internally generated [member] | Not internally generated [member] | ||||||||||||
| Brand names [member] | Intangible exploration and evaluation assets [member] | Computer software [member] | Value of business acquired [member] | Capitalised development expenditure [member] | Intangible assets under development [member] | Other intangible assets [member] | |||||||||
| Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||||||||||||||
| Reconciliation of changes in intangible assets and goodwill [abstract] | |||||||||||||||
| Intangible assets and goodwill | |||||||||||||||
| Changes in intangible assets and goodwill [abstract] | |||||||||||||||
| Amortisation, intangible assets other than goodwill | |||||||||||||||
| Impairment loss recognised in profit or loss, intangible assets and goodwill | |||||||||||||||
| Reversal of impairment loss recognised in profit or loss, intangible assets other than goodwill | |||||||||||||||
| Revaluation increase (decrease), intangible assets other than goodwill | |||||||||||||||
| Impairment loss recognised in other comprehensive income, intangible assets other than goodwill | |||||||||||||||
| Reversal of impairment loss recognised in other comprehensive income, intangible assets other than goodwill | |||||||||||||||
| Increase (decrease) through transfers and other changes, intangible assets and goodwill | |||||||||||||||
| Disposals and retirements, intangible assets and goodwill | |||||||||||||||
| Decrease through classified as held for sale, intangible assets and goodwill | |||||||||||||||
| Decrease through loss of control of subsidiary, intangible assets and goodwill | |||||||||||||||
| Subsequent recognition of deferred tax assets, goodwill | |||||||||||||||
| Increase (decrease) in intangible assets and goodwill | |||||||||||||||
| Intangible assets and goodwill | |||||||||||||||
| Revaluation of intangible assets [abstract] | |||||||||||||||
| Activos intangibles distintos de la plusvalía, activos revaluados | |||||||||||||||
| Activos intangibles distintos de la plusvalía, activos revaluados, al costo | |||||||||||||||
| Activos intangibles distintos de la plusvalía, superávit de revaluación | |||||||||||||||