| Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| The weighted average exercise price of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. [Refer: Weighted average [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Prezzo medio ponderato d'esercizio di altri strumenti rappresentativi di capitale in circolazione in accordi di pagamento basato su azioni | it | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Il prezzo medio ponderato d'esercizio di altri strumenti rappresentativi di capitale (ossia diversi dalle opzioni su azioni) in circolazione in accordi di pagamento basato su azioni. [Rif: Media ponderata [member]] | it | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |