Disclosure Of Fair Value Measurement [Text Block]
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of assets [line items] | ||||||||||||||||||||||||||||||||||||||||
| Assets | — | — | — | — | — | — | — |
23 848
SEK
|
22 996
SEK
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity |
16 007
SEK
|
251,000,000
SEK
|
0
SEK
|
567,000,000
SEK
|
16 614
SEK
|
211,000,000
SEK
|
0
SEK
|
16 614
SEK
|
15 732
SEK
|
15 276
SEK
|
0
SEK
|
251,000,000
SEK
|
257,000,000
SEK
|
15 732
SEK
|
52,000,000
SEK
|
0
SEK
|
559,000,000
SEK
|
15 901
SEK
|
0
SEK
|
–
SEK
|
–
SEK
|
277,000,000
SEK
|
251,000,000
SEK
|
–
SEK
|
15 901
SEK
|
–
SEK
|
–
SEK
|
277,000,000
SEK
|
0
SEK
|
0
SEK
|
14 329
SEK
|
14 606
SEK
|
–
SEK
|
485,000,000
SEK
|
251,000,000
SEK
|
15 901
SEK
|
15 901
SEK
|
0
SEK
|
485,000,000
SEK
|
836,000,000
SEK
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |