Classification of financial assets and liabilities - Financial assets (Details) - SEK (kr) kr in Millions	Dec. 31, 2025	Dec. 31, 2024
Financial assets at fair value
Mandatorily	kr 60,433	kr 65,687
Derivatives used for hedge accounting	2,944	1,969
Amortized cost	277,900	291,828
Total	341,277	359,484
Cash and cash equivalents
Financial assets at fair value
Amortized cost	7,259	5,219
Total	7,259	5,219
Treasuries/government bonds
Financial assets at fair value
Mandatorily	13,419	4,150
Total	13,419	4,150
Other interest-bearing securities except loans
Financial assets at fair value
Mandatorily	43,237	52,843
Total	43,237	52,843
Loans in the form of interest-bearing securities
Financial assets at fair value
Amortized cost	47,485	48,726
Total	47,485	48,726
Loans to credit institutions
Financial assets at fair value
Amortized cost	22,939	13,529
Total	22,939	13,529
Loans to the public
Financial assets at fair value
Amortized cost	200,216	224,354
Total	200,216	224,354
Derivatives
Financial assets at fair value
Mandatorily	3,776	8,674
Derivatives used for hedge accounting	2,944	1,969
Total	6,721	10,643
Shares
Financial assets at fair value
Mandatorily		20
Total	kr 0	kr 20

The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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