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Associated Companies - Equity in Associated Companies (Detail) - SEK (kr) kr in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Investments Accounted For Using Equity Method [Line Items] |  |  |  |
Share in earnings | kr (298) |  | kr (335) | kr 58
Taxes | (9,589) |  | (6,922) | (4,813)
Dividends paid | (5,996) | [1] | (4,450) | (3,425)
Associates [member] |  |  |  |
Disclosure Of Investments Accounted For Using Equity Method [Line Items] |  |  |  |
Equity in joint ventures and associated companies,Opening balance | 1,565 |  | 611 |
Investments | 167 |  | 1,310 |
Share in earnings | (298) |  | (335) |
Distribution of capital stock | (3) |  |  |
Taxes | (33) |  | (5) |
Dividends paid | (43) |  | (66) |
Divested business |  |  | (5) |
Translation differences | (81) |  | 55 |
Equity in joint ventures and associated companies,Closing balance | kr 1,274 |  | kr 1,565 | kr 611
[1] | Dividends paid per share amounted to SEK 1.50 (SEK 1.00 in 2019 and SEK 1.00 in 2018).

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