| Investments in subsidiaries, joint ventures and associates reported in separate financial statements | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total investments in subsidiaries, joint ventures and associates reported in separate financial statements | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries reported in separate financial statements] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Investeringar i dotterföretag, joint ventures och intresseföretag rapporterade i separata finansiella rapporter | sv | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Innehavet i dotterföretag, joint ventures och intresseföretag i ett företags separata finansiella rapporter. [Se: Intresseföretag [member]; Joint ventures [member]; Dotterföretag [member]; Investeringar i dotterföretag rapporterade i separata finansiella rapporter] | sv | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Totala investeringar i dotterföretag, joint ventures och intresseföretag rapporterade i separata finansiella rapporter | sv | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |