Statement Of Changes In Equity [Abstract]
| Concept |
As at 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 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Equity |
6 884
EUR
|
— | — | — | — |
11 477
SEK
|
9 218
SEK
|
53 519
SEK
|
2 350
SEK
|
67 346
SEK
|
— | — |
51 215
SEK
|
6 309
SEK
|
— | — |
68 507
SEK
|
59 874
SEK
|
8 633
SEK
|
2 350
SEK
|
— | — | — |
51 528
SEK
|
8 990
SEK
|
54 352
SEK
|
2 350
SEK
|
— |
474,000,000
SEK
|
— |
6 316
EUR
|
— | — |
62 801
SEK
|
2 350
SEK
|
6 177
SEK
|
8 676
SEK
|
54 125
SEK
|
8 676
SEK
|
54 125
SEK
|
62 801
SEK
|
45 598
SEK
|
6 284
SEK
|
107,000,000
SEK
|
107,000,000
SEK
|
2 350
SEK
|
45 491
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — |
571,000,000
EUR
|
5 567
SEK
|
497,000,000
SEK
|
— | — | — | — | — |
5 567
SEK
|
1 190
SEK
|
— | — | — |
8 620
SEK
|
— | — | — | — |
968,000,000
EUR
|
8 620
SEK
|
1 122
EUR
|
— | — | — | — |
10 228
SEK
|
— | — | — |
1 519
SEK
|
10 228
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
5 137
SEK
|
7 244
SEK
|
1 634
SEK
|
473,000,000
SEK
|
— | — | — | — | — |
6 771
SEK
|
888,000,000
SEK
|
— | — |
5 834
SEK
|
5 674
SEK
|
— | — | — | — |
6 562
SEK
|
160,000,000
SEK
|
6 479
SEK
|
— | — | — | — |
61,000,000
SEK
|
— |
5 701
SEK
|
— |
839,000,000
SEK
|
5 640
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
5 137
SEK
|
13 308
SEK
|
7 201
SEK
|
970,000,000
SEK
|
— | — | — | — | — |
12 338
SEK
|
2 078
SEK
|
— | — |
5 834
SEK
|
14 294
SEK
|
— | — | — | — |
16 372
SEK
|
8 460
SEK
|
5 268
SEK
|
— | — | — | — |
10 289
SEK
|
— |
5 701
SEK
|
— |
680,000,000
SEK
|
4 588
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — |
5 314
SEK
|
4 916
SEK
|
398,000,000
SEK
|
— | — | — | — | — |
4 916
SEK
|
528,000,000
SEK
|
— | — | — |
4 741
SEK
|
— | — | — | — |
5 269
SEK
|
4 741
SEK
|
4 843
SEK
|
— | — | — | — |
4 390
SEK
|
— | — | — |
453,000,000
SEK
|
4 390
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Amount removed from reserve of cash flow hedges and included in initial cost or other carrying amount of non-financial asset (liability) or firm commitment for which fair value hedge accounting is applied | — |
31,000,000
SEK
|
31,000,000
SEK
|
— | — | — | — | — | — | — |
31,000,000
SEK
|
— | — | — |
1,000,000
SEK
|
1,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
— |
2,000,000
SEK
|
— | — | — | — | — | — |
2,000,000
SEK
|
— | — |
2,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |