v3.26.1
Financial instruments carried at fair value - Reconciliation of financial instruments classified in Level 3 (Detail) - EUR (€)
€ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Financial assets held at fair value:        
Total liabilities € 1,443,774   € 1,357,588  
Financial liabilities held at fair value:        
Total financial assets held at fair value 1,526,110   1,439,873  
Valuation
technique
unobservable
parameters
(Level 3) | Recurring fair value measurement        
Financial assets held at fair value:        
Changes in the group of consolidated companies 0 € 0    
Total gains/losses 994 [1],[2],[3] 326 [4],[5],[6]    
Purchases 4,729 3,008    
Sales (3,670) (2,269)    
Issuances 3,610 [7] 1,703 [8]    
Settlements (4,274) [9] (2,271) [10]    
Transfers into Level 3 2,926 [11] 3,634 [12]    
Transfers out of Level 3 (3,093) [11] (4,266) [12]    
Total liabilities 10,277 12,621 11,547 € 13,382
Financial liabilities held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 10 [1],[2],[3] (141) [4],[5],[6]    
Purchases 0 0    
Sales 0 0    
Issuances 2,034 [7] 2,099 [8]    
Settlements (391) [9] (976) [10]    
Transfers into Level 3 1,671 [11] 2,223 [12]    
Transfers out of Level 3 (4,593) [11] (3,965) [12]    
Total financial assets held at fair value 26,988 26,148 25,764 26,281
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial liabilities at fair value through profit or loss | Trading securities | Recurring fair value measurement        
Financial assets held at fair value:        
Total liabilities 22 25 23 26
Financial liabilities held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses (1) [3] (6) [6]    
Purchases    
Sales    
Issuances [7] [8]    
Settlements 0 [9] 0 [10]    
Transfers into Level 3 0 [11] 5 [12]    
Transfers out of Level 3 0 [11] 0 [12]    
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial liabilities at fair value through profit or loss | Derivatives | Recurring fair value measurement        
Financial assets held at fair value:        
Total liabilities 5,489 7,328 5,938 8,707
Financial liabilities held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses (40) [3] 18 [6]    
Purchases    
Sales    
Issuances [7] [8]    
Settlements 285 [9] (233) [10]    
Transfers into Level 3 1,150 [11] 1,471 [12]    
Transfers out of Level 3 (1,844) [11] (2,635) [12]    
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial liabilities at fair value through profit or loss | Other Trading Liabilities | Recurring fair value measurement        
Financial assets held at fair value:        
Total liabilities 32 0 2 93
Financial liabilities held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses (2) [3] 0 [6]    
Purchases    
Sales    
Issuances [7] [8]    
Settlements 15 [9] (93) [10]    
Transfers into Level 3 19 [11] 0 [12]    
Transfers out of Level 3 (2) [11] 0 [12]    
Valuation
technique
unobservable
parameters
(Level 3) | Financial liabilities designated at fair value through profit or loss | Recurring fair value measurement        
Financial assets held at fair value:        
Total liabilities 4,647 5,273 5,547 4,569
Financial liabilities held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 35 [3] (203) [6]    
Purchases    
Sales    
Issuances 2,034 [7] 2,099 [8]    
Settlements (669) [9] (649) [10]    
Transfers into Level 3 425 [11] 759 [12]    
Transfers out of Level 3 (2,725) [11] (1,302) [12]    
Valuation
technique
unobservable
parameters
(Level 3) | Other financial liabilities at fair value | Recurring fair value measurement        
Financial assets held at fair value:        
Total liabilities 86 [13] (5) 36 [13] (13)
Financial liabilities held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 18 [3] 49 [6]    
Purchases    
Sales    
Issuances [7] [8]    
Settlements (23) [9] (1) [10]    
Transfers into Level 3 78 [11] (12) [12]    
Transfers out of Level 3 (22) [11] (29) [12]    
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial assets at fair value through profit or loss | Trading securities | Recurring fair value measurement        
Financial assets held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 278 [3] (23) [6]    
Purchases 1,531 991    
Sales (955) (864)    
Issuances 0 [7] 0 [8]    
Settlements (179) [9] (130) [10]    
Transfers into Level 3 531 [11] 697 [12]    
Transfers out of Level 3 (500) [11] (465) [12]    
Financial liabilities held at fair value:        
Total financial assets held at fair value 4,340 3,170 3,635 2,964
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial assets at fair value through profit or loss | Derivatives | Recurring fair value measurement        
Financial assets held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 383 [3] 1,230 [6]    
Purchases    
Sales    
Issuances [7] [8]    
Settlements 609 [9] (162) [10]    
Transfers into Level 3 1,497 [11] 1,788 [12]    
Transfers out of Level 3 (1,927) [11] (2,596) [12]    
Financial liabilities held at fair value:        
Total financial assets held at fair value 7,570 8,193 7,008 7,933
Valuation
technique
unobservable
parameters
(Level 3) | Trading financial assets at fair value through profit or loss | Other trading assets | Recurring fair value measurement        
Financial assets held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses (18) [3] (389) [6]    
Purchases 1,130 680    
Sales (2,242) (1,201)    
Issuances 2,145 [7] 1,017 [8]    
Settlements (1,167) [9] (974) [10]    
Transfers into Level 3 765 [11] 664 [12]    
Transfers out of Level 3 (231) [11] (300) [12]    
Financial liabilities held at fair value:        
Total financial assets held at fair value 7,452 5,682 7,070 6,184
Valuation
technique
unobservable
parameters
(Level 3) | Non-trading financial assets mandatory at fair value through profit or loss | Recurring fair value measurement        
Financial assets held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 299 [3] (247) [6]    
Purchases 1,585 893    
Sales (357) (47)    
Issuances 167 [7] 375 [8]    
Settlements (2,176) [9] (522) [10]    
Transfers into Level 3 69 [11] 90 [12]    
Transfers out of Level 3 (356) [11] (427) [12]    
Financial liabilities held at fair value:        
Total financial assets held at fair value 4,912 5,920 5,681 5,805
Valuation
technique
unobservable
parameters
(Level 3) | Financial assets designated at fair value through profit or loss | Recurring fair value measurement        
Financial assets held at fair value:        
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]    
Financial liabilities held at fair value:        
Total financial assets held at fair value 0 0 0 0
Valuation
technique
unobservable
parameters
(Level 3) | Financial assets at fair value through other comprehensive income | Recurring fair value measurement        
Financial assets held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 50 [3],[14] (235) [6],[15]    
Purchases 484 445    
Sales (116) (157)    
Issuances 1,297 [7] 311 [8]    
Settlements (1,360) [9] (483) [10]    
Transfers into Level 3 64 [11] 376 [12]    
Transfers out of Level 3 (75) [11] (479) [12]    
Financial liabilities held at fair value:        
Total financial assets held at fair value 2,691 3,161 2,348 3,383
Valuation
technique
unobservable
parameters
(Level 3) | Other financial assets at fair value | Recurring fair value measurement        
Financial assets held at fair value:        
Changes in the group of consolidated companies 0 0    
Total gains/losses 3 [3] (10) [6]    
Purchases 0 0    
Sales 0 0    
Issuances [7] [8]    
Settlements 0 [9] 0 [10]    
Transfers into Level 3 0 [11] 20 [12]    
Transfers out of Level 3 (3) [11] 0 [12]    
Financial liabilities held at fair value:        
Total financial assets held at fair value € 22 € 22 € 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 gain of € 170 million and for total financial liabilities held at fair value this is a loss of € 10 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 interim 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 loss of € 749 million and for total financial liabilities held at fair value this is a gain of € 158 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 interim 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 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
[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] Relates to derivatives, which are embedded in contracts where the host contract is held at amortized cost but for which the embedded derivative is bifurcated and
reported separately. The separated embedded derivatives may have a positive or a negative fair value and classification presented in this table is consistent with the
classification of the host contract
[14] Total gains and losses on financial assets at fair value through other comprehensive income include a gain of € 7 million recognized in other comprehensive income, net of tax and a gain of € 2 million recognized in the income statement presented in net gain (losses)
[15] Total gains and losses on financial assets at fair value through other comprehensive income include a loss of € 1 million recognized in other comprehensive income, net of tax and a gain of € 2 million recognized in the income statement presented in net gain (losses)