Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
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 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||
| Equity | — |
7 182
EUR
|
— | — |
59 075
SEK
|
— |
9 421
SEK
|
— |
8 559
SEK
|
2 350
SEK
|
70 846
SEK
|
6 884
EUR
|
— | — | — | — |
11 477
SEK
|
9 218
SEK
|
53 519
SEK
|
2 350
SEK
|
67 346
SEK
|
— | — |
51 215
SEK
|
6 309
SEK
|
— | — |
6 698
EUR
|
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
|
63 342
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
9 796
SEK
|
— |
9 554
SEK
|
— | — |
242,000,000
SEK
|
— |
9 554
SEK
|
— | — | — | — | — |
571,000,000
EUR
|
5 567
SEK
|
497,000,000
SEK
|
— | — | — | — | — |
5 567
SEK
|
1 190
SEK
|
— | — | — |
8 620
SEK
|
— | — | — | — |
967,000,000
EUR
|
8 620
SEK
|
— | — | — | — | — | — |
| Other comprehensive income |
1 519
SEK
|
— |
937,000,000
SEK
|
2 108
SEK
|
— |
582,000,000
SEK
|
— |
1 171
SEK
|
— | — | — | — |
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
|
— | — | — | — | — | — |
| Comprehensive income |
8 277
SEK
|
— |
8 617
SEK
|
2 108
SEK
|
— |
340,000,000
SEK
|
— |
10 725
SEK
|
— | — | — | — |
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
|
— | — | — | — | — | — |
| Dividends recognised as distributions to owners |
5 411
SEK
|
— |
5 092
SEK
|
— | — |
319,000,000
SEK
|
— |
5 092
SEK
|
— | — | — | — | — |
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
|
— | — | — | — | — | — |
| 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 |
52,000,000
SEK
|
— |
52,000,000
SEK
|
52,000,000
SEK
|
— | — | — | — | — | — | — | — |
31,000,000
SEK
|
31,000,000
SEK
|
— | — | — | — | — | — | — |
31,000,000
SEK
|
— | — | — |
1,000,000
SEK
|
1,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
— | — | — | — | — | — | — |