v3.25.4
Financial Instruments Carried at Fair Value - Reconciliation of Financial Instruments Categorized in Level 3 (Detail) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Financial assets held at fair value:    
Assets at beginning of period € 1,391,000 € 1,317,000
Assets at end of period 1,440,000 1,391,000
Valuation
technique
unobservable
parameters
(Level 3)    
Financial assets held at fair value:    
Assets at beginning of period 26,281 25,599
Changes in the group of consolidated companies (3) (1)
Total gains/losses 255 [1],[2],[3] 977 [4],[5],[6]
Purchases 6,766 5,311
Sales (4,602) (3,393)
Issuances 4,569 [7] 4,227 [8]
Settlements (4,802) [9] (5,501) [10]
Transfers into Level 3 2,988 [11] 4,421 [12]
Transfers out of Level 3 (5,688) [11] (5,359) [12]
Assets at end of period 25,764 26,281
Financial liabilities held at fair value:    
Liabilities at beginning of period 13,382 10,856
Changes in the group of consolidated companies 0 0
Total gains/losses (1,136) [1],[2],[3] 1,417 [4],[5],[6]
Purchases 0 0
Sales 0 0
Issuances 3,255 [7] 2,958 [8]
Settlements (569) [9] (537) [10]
Transfers into Level 3 1,704 [11] 2,533 [12]
Transfers out of Level 3 (5,088) [11] (3,844) [12]
Liabilities at end of period 11,547 13,382
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial liabilities at fair value through profit or loss | Trading securities    
Financial liabilities held at fair value:    
Liabilities at beginning of period 26 26
Changes in the group of consolidated companies 0 0
Total gains/losses 1 [3] 0 [6]
Purchases 0 0
Sales 0 0
Issuances 0 [7] 0 [8]
Settlements (4) [9] 0 [10]
Transfers into Level 3 0 [11] 0 [12]
Transfers out of Level 3 0 [11] 0 [12]
Liabilities at end of period 23 26
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial liabilities at fair value through profit or loss | Derivatives    
Financial liabilities held at fair value:    
Liabilities at beginning of period 8,707 7,666
Changes in the group of consolidated companies 0 0
Total gains/losses (1,122) [3] 1,186 [6]
Purchases 0 0
Sales 0 0
Issuances 0 [7] 0 [8]
Settlements 217 [9] (175) [10]
Transfers into Level 3 1,182 [11] 2,156 [12]
Transfers out of Level 3 (3,047) [11] (2,126) [12]
Liabilities at end of period 5,938 8,707
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial liabilities at fair value through profit or loss | Other Trading    
Financial liabilities held at fair value:    
Liabilities at beginning of period 93 0
Changes in the group of consolidated companies 0 0
Total gains/losses 1 [3] 0 [6]
Purchases 0 0
Sales 0 0
Issuances 0 [7] 0 [8]
Settlements (92) [9] 93 [10]
Transfers into Level 3 0 [11] 0 [12]
Transfers out of Level 3 0 [11] 0 [12]
Liabilities at end of period 2 93
Valuation
technique
unobservable
parameters
(Level 3) | Financial liabilities designated at fair value through profit or loss    
Financial liabilities held at fair value:    
Liabilities at beginning of period 4,569 3,248
Changes in the group of consolidated companies 0 0
Total gains/losses (134) [3] 129 [6],[13]
Purchases 0 0
Sales 0 0
Issuances 3,255 [7] 2,958 [8]
Settlements (690) [9] (474) [10]
Transfers into Level 3 508 [11] 377 [12]
Transfers out of Level 3 (1,960) [11] (1,669) [12]
Liabilities at end of period 5,547 4,569
Valuation
technique
unobservable
parameters
(Level 3) | Other financial liabilities at fair value    
Financial liabilities held at fair value:    
Liabilities at beginning of period (13) (85)
Changes in the group of consolidated companies 0 0
Total gains/losses 118 [3] 102 [6]
Purchases 0 0
Sales 0 0
Issuances 0 [7] 0 [8]
Settlements (1) [9] 18 [10]
Transfers into Level 3 13 [11] 1 [12]
Transfers out of Level 3 (81) [11] (49) [12]
Liabilities at end of period 36 (13)
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial assets at fair value through profit or loss | Trading securities    
Financial assets held at fair value:    
Assets at beginning of period 2,964 2,995
Changes in the group of consolidated companies 0 0
Total gains/losses 39 [3] 230 [6]
Purchases 2,986 1,985
Sales (1,837) (1,558)
Issuances 4 [7] 0 [8]
Settlements (402) [9] (482) [10]
Transfers into Level 3 508 [11] 371 [12]
Transfers out of Level 3 (626) [11] (577) [12]
Assets at end of period 3,635 2,964
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial assets at fair value through profit or loss | Derivatives    
Financial assets held at fair value:    
Assets at beginning of period 7,933 8,198
Changes in the group of consolidated companies 0 0
Total gains/losses 949 [3] 454 [6]
Purchases 0 0
Sales 0 0
Issuances 0 [7] 0 [8]
Settlements (351) [9] (583) [10]
Transfers into Level 3 1,535 [11] 2,257 [12]
Transfers out of Level 3 (3,058) [11] (2,394) [12]
Assets at end of period 7,008 7,933
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial assets at fair value through profit or loss | Other Trading    
Financial assets held at fair value:    
Assets at beginning of period 6,184 6,226
Changes in the group of consolidated companies 0 0
Total gains/losses (362) [3] 77 [6]
Purchases 1,231 814
Sales (2,144) (1,378)
Issuances 3,301 [7] 2,513 [8]
Settlements (1,380) [9] (2,016) [10]
Transfers into Level 3 447 [11] 706 [12]
Transfers out of Level 3 (208) [11] (756) [12]
Assets at end of period 7,070 6,184
Valuation
technique
unobservable
parameters
(Level 3) | Non-trading financial assets mandatory at fair value through profit or loss    
Financial assets held at fair value:    
Assets at beginning of period 5,805 5,226
Changes in the group of consolidated companies (3) (1)
Total gains/losses (135) [3] 88 [6]
Purchases 1,849 1,736
Sales (190) (80)
Issuances 782 [7] 736 [8]
Settlements (1,117) [9] (1,098) [10]
Transfers into Level 3 71 [11] 365 [12]
Transfers out of Level 3 (1,380) [11] (1,170) [12]
Assets at end of period 5,681 5,805
Valuation
technique
unobservable
parameters
(Level 3) | Financial assets designated at fair value through profit or loss    
Financial assets held at fair value:    
Assets at beginning of period 0 0
Changes in the group of consolidated companies 0 0
Total gains/losses 0 [3] 0 [6]
Purchases 0 0
Sales 0 0
Issuances 0 [7] 0 [8]
Settlements 0 [9] 0 [10]
Transfers into Level 3 0 [11] 0 [12]
Transfers out of Level 3 0 [11] 0 [12]
Assets at end of period 0 0
Valuation
technique
unobservable
parameters
(Level 3) | Financial assets at fair value through other comprehensive income    
Financial assets held at fair value:    
Assets at beginning of period 3,383 2,949
Changes in the group of consolidated companies 0 0
Total gains/losses (229) [3],[14] 126 [6],[13]
Purchases 700 776
Sales (431) (378)
Issuances 482 [7] 978 [8]
Settlements (1,552) [9] (1,322) [10]
Transfers into Level 3 407 [11] 716 [12]
Transfers out of Level 3 (412) [11] (462) [12]
Assets at end of period 2,348 3,383
Valuation
technique
unobservable
parameters
(Level 3) | Other financial assets at fair value    
Financial assets held at fair value:    
Assets at beginning of period 12 5
Changes in the group of consolidated companies 0 0
Total gains/losses (6) [3] 3 [6]
Purchases 0 0
Sales 0 0
Issuances 0 [7] 0 [8]
Settlements 0 [9] 0 [10]
Transfers into Level 3 20 [11] 5 [12]
Transfers out of Level 3 (4) [11] (1) [12]
Assets at end of period € 22 € 12
[1] For assets positive balances represent gains, negative balances represent losses. For liabilities positive balances represent losses, negative balances represent gains
[2] This amount includes the effect of exchange rate changes. For total financial assets held at fair value this effect is a loss of € 802 million and for total financial liabilities held at fair value this is a gain of € 206 million
[3] Total gains and losses predominantly relate to net gains (losses) on financial assets/liabilities at fair value through profit or loss reported in the consolidated statement of income. The total also includes net gains (losses) on financial assets at fair value through other comprehensive income reported in other comprehensive income, net of tax. Further, certain instruments are hedged with
instruments in Level 1 or Level 2 but the table above does not include the gains and losses on these hedging instruments. Additionally, both observable and unobservable parameters may be used to determine the fair value of an instrument classified within Level 3
[4] For assets positive balances represent gains, negative balances represent losses. For liabilities positive balances represent losses, negative balances represent gains
[5] This amount includes the effect of exchange rate changes. For total financial assets held at fair value this effect is a gain of € 362 million and for total financial liabilities held at fair value this is a loss of € 19 million
[6] Total gains and losses predominantly relate to net gains (losses) on financial assets/liabilities at fair value through profit or loss reported in the consolidated statement of income. The total also includes net gains (losses) on financial assets at fair value through other comprehensive income reported in other comprehensive income, net of tax. Further, certain instruments are hedged with
instruments in Level 1 or Level 2 but the table above does not include the gains and losses on these hedging instruments. Additionally, both observable and unobservable parameters may be used to determine the fair value of an instrument classified within Level 3
[7] Issuances relate to the cash amount received on the issuance of a liability and the cash amount paid on the primary issuance of a loan to a borrower
[8] Issuances relate to the cash amount received on the issuance of a liability and the cash amount paid on the primary issuance of a loan to a borrower
[9] Settlements represent cash flows to settle the asset or liability. For debt and loan instruments this includes periodic and lump sum principal payments. For derivatives all cash flows are presented in settlements
[10] Settlements represent cash flows to settle the asset or liability. For debt and loan instruments this includes periodic and lump sum principal payments. For derivatives all cash flows are presented in settlements
[11] Transfers in and transfers out of Level 3 are related to changes in observability of input parameters. During the year they are recorded at their fair value at the beginning of year. For instruments transferred into Level 3 the table shows the gains and losses and cash flows on the instruments as if they had been transferred at the beginning of the year. Similarly, for instruments transferred out
of Level 3 the table does not show any gains or losses or cash flows on the instruments during the year since the table is presented as if they have been transferred out at the beginning of the year
[12] Transfers in and transfers out of Level 3 are related to changes in observability of input parameters. During the period they are recorded at their fair value at the beginning of year. For instruments transferred into Level 3 the table shows the gains and losses and cash flows on the instruments as if they had been transferred at the beginning of the year. Similarly for instruments transferred
out of Level 3 the table does not show any gains or losses or cash flows on the instruments during the period since the table is presented as if they have been transferred out at the beginning of the year
[13] Total gains and losses on financial assets at fair value through other comprehensive income include a gain of € 29 million recognized in other comprehensive income, net of tax
[14] Total gains and losses on financial assets at fair value through other comprehensive income include a gain of € 14 million recognized in other comprehensive income, net of tax and a gain of € 1 million recognized in the income statement presented in net gains (loss)