Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-01-01 |
As at 2022-12-31 |
As at 2022-01-01 |
|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||
| Property, plant and equipment [abstract] | ||||
| Property, plant and equipment |
168,000,000
SEK
|
— |
139,000,000
SEK
|
— |
| Intangible assets and goodwill [abstract] | ||||
| Intangible assets other than goodwill [abstract] | ||||
| Intangible assets other than goodwill |
1,987,000,000
SEK
|
— |
1,687,000,000
SEK
|
— |
| Prepayments and accrued income including contract assets [abstract] | ||||
| Prepayments and accrued income including contract assets |
321,000,000
SEK
|
— |
211,000,000
SEK
|
— |
| Categories of financial assets [abstract] | ||||
| Financial assets at fair value through other comprehensive income [abstract] | ||||
| Financial assets measured at fair value through other comprehensive income |
6,161,000,000
SEK
|
— |
2,936,000,000
SEK
|
— |
| Cash and cash equivalents [abstract] | ||||
| Cash and cash equivalents |
1,010,000,000
SEK
|
9,006,000,000
SEK
|
9,006,000,000
SEK
|
575,000,000
SEK
|
| Miscellaneous assets [abstract] | ||||
| Derivative financial assets | — | — | — | — |
| Derivative financial assets held for hedging |
–
SEK
|
— |
17,000,000
SEK
|
— |
| Loans and advances | — | — | — | — |
| Loans and advances to customers |
2 612,5
SEK
|
— |
2 686,6
SEK
|
— |
| Other assets |
617,000,000
SEK
|
— |
585,000,000
SEK
|
— |
| Miscellaneous current liabilities [abstract] | ||||
| Current deposits from customers |
2 950,9
SEK
|
— |
3 320,5
SEK
|
— |
| Current accrued expenses and other current liabilities |
574,000,000
SEK
|
— |
853,000,000
SEK
|
— |
| Miscellaneous liabilities [abstract] | ||||
| Derivative financial liabilities | — | — | — | — |
| Derivative financial liabilities held for hedging |
4,000,000
SEK
|
— |
–
SEK
|
— |
| Subordinated liabilities [abstract] | ||||
| Subordinated liabilities |
1,000,000,000
SEK
|
— |
1,000,000,000
SEK
|
— |
| Other liabilities |
1,060,000,000
SEK
|
— |
2,286,000,000
SEK
|
— |
| Issued capital [abstract] | ||||
| Issued capital |
534,000,000
SEK
|
— |
534,000,000
SEK
|
— |
| Retained earnings [abstract] | ||||
| Retained earnings, profit (loss) for reporting period |
41,000,000
SEK
|
— |
935,000,000
SEK
|
— |
| Retained earnings, excluding profit (loss) for reporting period |
4,267,000,000
SEK
|
— |
5,145,000,000
SEK
|
— |
| Net assets (liabilities) [abstract] | ||||
| Assets |
3 694,9
SEK
|
— |
4 204,9
SEK
|
— |
| Liabilities |
3 214,7
SEK
|
— |
3 734,4
SEK
|
— |
| Assets less current liabilities [abstract] |