| Additional liabilities, contingent liabilities recognised in business combination | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total additional liabilities, contingent liabilities recognised in business combination | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The amount of additional contingent liabilities recognised in business combinations. [Refer: Contingent liabilities recognised in business combination; Business combinations [member]; Contingent liabilities [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Ytterligare skulder, eventualförpliktelser redovisade i rörelseförvärv | sv | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Beloppet för ytterligare skulder, eventualförpliktelser redovisade i rörelseförvärv. [Se: Eventualförpliktelser redovisade i rörelseförvärv; Rörelseförvärv [member]; Eventualförpliktelser [member]] | sv | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Totala ytterligare skulder, eventualförpliktelser redovisade i rörelseförvärv | sv | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |