v3.25.4
Risk information - Net exposure (Details) - SEK (kr)
kr in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]    
Financial assets kr 341,277 kr 359,484
Cash collateral under the security agreements for derivative contracts 6,858 3,201
Cash and cash equivalents    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 7,259 5,219
Treasuries/government bonds    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 13,419 4,150
Other interest-bearing securities except loans    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 43,237 52,843
Loans in the form of interest-bearing securities    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 47,485 48,726
Loans to credit institutions    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 22,939 13,529
Loans to the public    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 200,216 224,354
Derivatives    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 6,721 10,643
Shares    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 0 20
Credit risk    
Disclosure of detailed information about financial instruments [line items]    
Adjustment to carrying amount from exposure 6,800 5,500
Net exposure 426,900 420,500
Carrying amount kr 433,600 kr 426,000
Percentage of net exposures 100.00% 100.00%
Credit risk | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 216,800 kr 197,600
Percentage of net exposures 50.80% 47.00%
Credit risk | Regional governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 11,400 kr 18,700
Percentage of net exposures 2.70% 4.50%
Credit risk | Multilateral development banks    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 5,100 kr 7,000
Percentage of net exposures 1.20% 1.70%
Credit risk | Public sector entity    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 0 kr 1,000
Percentage of net exposures 0.00% 0.20%
Credit risk | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 32,200 kr 34,100
Percentage of net exposures 7.50% 8.10%
Credit risk | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 161,300 kr 162,100
Percentage of net exposures 37.80% 38.50%
Credit risk | Equity exposures    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 0 kr 0
Percentage of net exposures   0.00%
Credit risk | Financial assets    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 342,000 kr 359,700
Adjustment to carrying amount from exposure 6,800 5,700
Credit risk | Financial assets | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 140,500 148,300
Credit risk | Financial assets | Regional governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 10,900 18,100
Credit risk | Financial assets | Multilateral development banks    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 5,100 7,000
Credit risk | Financial assets | Public sector entity    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   1,000
Credit risk | Financial assets | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 31,700 33,900
Credit risk | Financial assets | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 147,100 145,700
Credit risk | Cash and cash equivalents    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 7,300 5,200
Adjustment to carrying amount from exposure 100  
Credit risk | Cash and cash equivalents | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 1,000 1,000
Credit risk | Cash and cash equivalents | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 6,100 4,200
Credit risk | Cash and cash equivalents | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   0
Credit risk | Treasuries/government bonds    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 13,400 4,200
Adjustment to carrying amount from exposure 0 100
Credit risk | Treasuries/government bonds | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 13,400 4,100
Credit risk | Other interest-bearing securities except loans    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 43,200 52,800
Adjustment to carrying amount from exposure 200 (100)
Credit risk | Other interest-bearing securities except loans | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 14,900 13,200
Credit risk | Other interest-bearing securities except loans | Regional governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 9,400 16,600
Credit risk | Other interest-bearing securities except loans | Multilateral development banks    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 5,100 6,300
Credit risk | Other interest-bearing securities except loans | Public sector entity    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   1,000
Credit risk | Other interest-bearing securities except loans | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 12,900 15,200
Credit risk | Other interest-bearing securities except loans | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 700 600
Credit risk | Loans in the form of interest-bearing securities    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 47,500 48,700
Adjustment to carrying amount from exposure (300) (300)
Credit risk | Loans in the form of interest-bearing securities | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   600
Credit risk | Loans in the form of interest-bearing securities | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 47,800 48,400
Credit risk | Loans to credit institutions    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 22,900 13,500
Adjustment to carrying amount from exposure 6,700 3,100
Cash collateral under the security agreements for derivative contracts 6,900 3,200
Credit risk | Loans to credit institutions | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 10,800 4,800
Credit risk | Loans to credit institutions | Regional governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 400 500
Credit risk | Loans to credit institutions | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 4,100 4,200
Credit risk | Loans to credit institutions | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 900 900
Credit risk | Loans to the public    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 200,200 224,400
Adjustment to carrying amount from exposure (2,200) (1,900)
Credit risk | Loans to the public | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 100,400 124,400
Credit risk | Loans to the public | Regional governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 1,000 1,000
Credit risk | Loans to the public | Multilateral development banks    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 0 700
Credit risk | Loans to the public | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 3,400 4,400
Credit risk | Loans to the public | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 97,800 95,800
Credit risk | Derivatives    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 6,700 10,600
Adjustment to carrying amount from exposure 1,600 4,700
Credit risk | Derivatives | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 5,100 5,900
Credit risk | Derivatives | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   0
Credit risk | Shares    
Disclosure of detailed information about financial instruments [line items]    
Financial assets   0
Adjustment to carrying amount from exposure   0
Credit risk | Shares | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   0
Credit risk | Other assets    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 800 300
Adjustment to carrying amount from exposure 800 100
Credit risk | Other assets | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   200
Credit risk | Contingent liabilities and commitments    
Disclosure of detailed information about financial instruments [line items]    
Adjustment to carrying amount from exposure 0 (200)
Contingent liabilities and commitments 91,500 66,300
Credit risk | Contingent liabilities and commitments | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 76,300 49,300
Credit risk | Contingent liabilities and commitments | Regional governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 600 600
Credit risk | Contingent liabilities and commitments | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 500 200
Credit risk | Contingent liabilities and commitments | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure 14,200 16,400
Credit risk | Interest-bearing securities and lending    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 330,100 kr 348,200
Percentage of net exposures 100.00% 100.00%
Credit risk | Interest-bearing securities and lending | Central governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 140,500 kr 148,300
Percentage of net exposures 42.50% 42.60%
Credit risk | Interest-bearing securities and lending | Regional governments    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 10,900 kr 18,200
Percentage of net exposures 3.30% 5.30%
Credit risk | Interest-bearing securities and lending | Multilateral development banks    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 5,100 kr 7,000
Percentage of net exposures 1.60% 2.00%
Credit risk | Interest-bearing securities and lending | Public sector entity    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   kr 1,000
Percentage of net exposures   0.30%
Credit risk | Interest-bearing securities and lending | Financial institutions    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 26,600 kr 28,000
Percentage of net exposures 8.10% 8.00%
Credit risk | Interest-bearing securities and lending | Corporates    
Disclosure of detailed information about financial instruments [line items]    
Net exposure kr 147,100 kr 145,700
Percentage of net exposures 44.60% 41.80%
Credit risk | Interest-bearing securities and lending | Equity exposures    
Disclosure of detailed information about financial instruments [line items]    
Net exposure   kr 0
Percentage of net exposures   0.00%