| Current and deferred tax relating to items credited (charged) directly to equity | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Aggregate current and deferred tax relating to items credited (charged) directly to equity | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The aggregate current and deferred tax relating to particular items that are charged or credited directly to equity. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |