| Contingent liabilities recognised in business combination | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Contingent liabilities recognised in business combination at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Contingent liabilities recognised in business combination at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| The amount of contingent liabilities recognised in a business combination. [Refer: Contingent liabilities [member]; Business combinations [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Eventualförpliktelser redovisade i rörelseförvärv | sv | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Beloppet för eventualförpliktelser redovisade i rörelseförvärv. [Se: Eventualförpliktelser [member]; Rörelseförvärv [member]] | sv | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Eventualförpliktelser redovisade i rörelseförvärv vid periodens början | sv | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Eventualförpliktelser redovisade i rörelseförvärv vid periodens slut | sv | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |