| Weiterführende Schulbildung [Mitglied] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Secondary education [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Enseignement secondaire [membre] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Voortgezet onderwijs [member] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Weiterführende Schulbildung | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Secondary education | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Enseignement secondaire | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Voortgezet onderwijs | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| VO | de | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| VO | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| VO (enseignement secondaire aux Pays-Bas) | fr | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| VO | nl | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |