| Aggregate adjustment to carrying amounts reported under previous GAAP [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for the aggregate adjustment to the carrying amounts reported under previous GAAP. [Refer: Carrying amount [member]; Previous GAAP [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Importo complessivo delle rettifiche apportate ai valori contabili esposti in base ai precedenti Principi contabili [member] | it | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Questo membro indica l'importo complessivo delle rettifiche apportate ai valori contabili esposti in base ai precedenti Principi contabili. [Rif: Valore contabile [member]; Precedenti Principi contabili [member]] | it | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |