| Aggregate adjustment to carrying amounts of investments reported under previous GAAP | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| The amount of aggregate adjustments to the carrying amounts reported under previous GAAP of investments in subsidiaries, joint ventures or associates in the entity's first IFRS financial statements. [Refer: Associates [member]; Carrying amount [member]; Joint ventures [member]; Previous GAAP [member]; Subsidiaries [member]; Investments in subsidiaries, joint ventures and associates; IFRSs [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Importo complessivo delle rettifiche apportate ai valori contabili degli investimenti esposti in base ai precedenti Principi contabili | it | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| L'importo complessivo delle rettifiche apportate ai valori contabili esposti in base ai precedenti Principi contabili delle partecipazioni in controllate, in joint venture o in società collegate nel primo bilancio dell'entità redatto in conformità agli IFRS. [Rif: Società collegate [member]; Valore contabile [member]; Joint venture [member]; Precedenti Principi contabili [member]; Controllate [member]; Partecipazioni in controllate, in joint venture e in società collegate; IFRS [member]] | it | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |