| Defined benefit plans that share risks between entities under common control [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for defined benefit plans that share risks between entities under common control such as a parent and its subsidiaries. [Refer: Defined benefit plans [member]; Subsidiaries [member]; Parent [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Piani a benefici definiti che condividono i rischi tra entità sotto controllo comune [member] | it | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Questo membro indica i piani a benefici definiti che condividono i rischi tra entità sotto controllo comune, ad esempio una controllante e le sue controllate. [Rif: Piani a benefici definiti [member]; Controllate [member]; Controllante [member]] | it | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |