| Sicherungsbeziehung, kumulierte Zeitwertänderung [as] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Hedge relationship, cumulative change in fair value [axis] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Relation de couverture, variation cumulée de la valeur réelle [axe] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Hedge relatie, cumulatieve reële-waarde verandering [as] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Sicherungsbeziehung, kumulierte Zeitwertänderung | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Hedge relationship, cumulative change in fair value | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Relation de couverture, variation cumulée de la valeur réelle | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Hedge relatie, cumulatieve reële-waarde verandering | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |