| Intangible assets other than goodwill [member] | |||||||||||
| Brand names [member] | Patentes [Miembro] | Computer software [member] | Licences and franchises [member] | Derechos [Miembro] | Knowhow [Miembro] | Intangible exploration and evaluation assets [member] | Acuerdos de concesión de servicios clasficados como intangibles [Miembro] | Other intangible assets [member] | |||
| Disclosure of detailed information about intangible assets [abstract] | |||||||||||
| Amortisation method, intangible assets other than goodwill | |||||||||||
| Useful lives or amortisation rates, intangible assets other than goodwill | |||||||||||
| Reconciliation of changes in intangible assets other than goodwill [abstract] | |||||||||||
| Intangible assets other than goodwill | |||||||||||
| Additions other than through business combinations, intangible assets other than goodwill | |||||||||||
| Acquisitions through business combinations, intangible assets other than goodwill | |||||||||||
| Amortisation, intangible assets other than goodwill | |||||||||||
| Impairment loss recognised in profit or loss, intangible assets other than goodwill | |||||||||||
| Reversal of impairment loss recognised in profit or loss, intangible assets other than goodwill | |||||||||||
| Increase (decrease) through transfers and other changes, intangible assets other than goodwill [abstract] | |||||||||||
| Increase (decrease) through transfers, intangible assets other than goodwill | |||||||||||
| Increase (decrease) through other changes, intangible assets other than goodwill | |||||||||||
| Intangibles, incrementos (disminuciones) activos por derecho de uso (arrendamientos) | |||||||||||
| Increase (decrease) through transfers and other changes, intangible assets other than goodwill | |||||||||||
| Disposals and retirements, intangible assets other than goodwill [abstract] | |||||||||||
| Disposals, intangible assets other than goodwill | |||||||||||
| Retirements, intangible assets other than goodwill | |||||||||||
| Disposals and retirements, intangible assets other than goodwill | |||||||||||
| Decrease through classified as held for sale, intangible assets other than goodwill | |||||||||||
| Increase (decrease) in intangible assets other than goodwill | |||||||||||
| Intangible assets other than goodwill | |||||||||||