Statement Of Changes In Equity [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||
| Increase (decrease) through acquisition of subsidiary, equity |
764,000,000
SEK
|
—
SEK
|
1 196
SEK
|
—
SEK
|
764,000,000
SEK
|
432,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
228,000,000
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
163,000,000
SEK
|
65,000,000
SEK
|
163,000,000
SEK
|
| Increase (decrease) through transactions with owners, equity |
437,000,000
SEK
|
—
SEK
|
2 980
SEK
|
1,000,000
SEK
|
436,000,000
SEK
|
2 543
SEK
|
—
SEK
|
—
SEK
|
—
SEK
|
9 078
SEK
|
—
SEK
|
—
SEK
|
20 158
SEK
|
—
SEK
|
10,000,000
SEK
|
14 686
SEK
|
5 608
SEK
|
5 482
SEK
|