| Contributions to plan by plan participants, net defined benefit liability (asset) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Contributions to plan by plan participants, net defined benefit liability (asset) | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The decrease (increase) in the net defined benefit liability (asset) resulting from contributions to a defined benefit plan by plan participants. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Deltagerne i en pensionsordnings bidrag til pensionsordning, ydelsesbaseret pensionsforpligtelse (aktiv) | da | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Faldet (stigningen) i den ydelsesbaserede pensionsforpligtelse (aktiv) som følge af deltagerne i en pensionsordnings bidrag til en ydelsesbaseret pensionsordning. [Reference: ydelsesbaseret pensionsforpligtelse (aktiv), ydelsesbaserede pensionsordninger [member]] | da | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |