| Rental income from investment property, net of direct operating expense | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Rental income from investment property, net of direct operating expense | en | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |
| The amount of rental income arising from investment property, net of direct operating expense from such property. [Refer: Direct operating expense from investment property; Rental income from investment property] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Ricavi per canoni da investimenti immobiliari, al netto dei costi operativi diretti | it | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| L'ammontare dei ricavi per canoni derivanti da investimenti immobiliari, al netto dei costi operativi diretti di tali immobili. [Rif: Costi operativi diretti connessi all'investimento immobiliare; Ricavi per canoni da investimenti immobiliari] | it | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Ricavi per canoni da investimenti immobiliari, al netto dei costi operativi diretti | it | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |