| Alle inkomende gelden met betrekking tot de activiteit of project. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Cash in flows of activities overview (detail) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Ingaande kasstroom activiteitenoverzicht (detail) | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total cash in flows | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Totale ingaande kasstroom | nl | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |