| Group [member] | Company [member] | ||
| Intangible assets [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Copyrights, patents and other industrial property rights, service and operating rights | |||
| Computer software | |||
| Other intangible assets | |||
| Total intangible assets other than goodwill | |||
| Goodwill | |||
| Total intangible assets and goodwill | |||