| Finanzinstrumente: Sicherungsgeschäfte [Titel] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Financial instruments: Hedge accounting [title] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Instruments financiers : Compte de couverture [titre] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Financiële instrumenten: Hedge accounting [titel] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Finanzinstrumente: Sicherungsgeschäfte | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Financial instruments: Hedge accounting | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Instruments financiers : Compte de couverture | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Financiële instrumenten: Hedge accounting | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Finanzinstrumente: Sicherungsgeschäfte | de | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Financial instruments: Hedge accounting | en | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Instruments financiers : Compte de couverture | fr | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Financiële instrumenten: Hedge accounting | nl | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |