v3.25.4
Allowance for Credit Losses - Financial assets at amortized cost (Detail) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
 [5]
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year € 5,799    
Allowance for credit losses, end of reporting period 6,156 € 5,799  
Allowance for Credit Losses      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 5,799 [1],[2],[3],[4] 5,285 [2],[4],[5] € 4,995
Movements Including New Business 1,760 [1],[3] 1,861 [2],[4] 1,778
Transfers due to changes in creditworthiness 0 [1],[3] 0 [2],[4] 0
Changes in models (127) [1],[3],[6] (9) [2],[4] (110)
Financial assets that have been derecognized during the period (1,002) [1],[3],[7],[8] (1,229) [2],[4],[9],[10] (1,197) [11]
Recovery of written off amounts 164 [1],[3] 157 [2],[4] 93
Foreign exchange and other changes (437) [1],[3] (267) [2],[4] (273)
Allowance for credit losses, end of reporting period 6,156 [1],[3] 5,799 [1],[2],[3],[4] 5,285 [2],[4]
Provision for Credit Losses excluding country risk 1,633 [3],[12],[13] 1,852 [4],[14],[15] 1,668 [16]
Stage 1      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 438    
Allowance for credit losses, end of reporting period 421 438  
Stage 1 | Allowance for Credit Losses      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 438 [1],[2],[3],[4] 447 [2],[4],[5] 533
Movements Including New Business (90) [1],[3] (150) [2],[4] (195)
Transfers due to changes in creditworthiness 119 [1],[3] 128 [2],[4] 170
Changes in models (63) [1],[3],[6] (2) [2],[4] (57)
Financial assets that have been derecognized during the period 0 [1],[3],[7],[8] 0 [2],[4],[9],[10] 0 [11]
Recovery of written off amounts 0 [1],[3] 0 [2],[4] 0
Foreign exchange and other changes 18 [1],[3] 15 [2],[4] (3)
Allowance for credit losses, end of reporting period 421 [1],[3] 438 [1],[2],[3],[4] 447 [2],[4]
Provision for Credit Losses excluding country risk (34) [3],[12],[13] (24) [4],[14],[15] (83) [16]
Stage 2      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 736    
Allowance for credit losses, end of reporting period 888 736  
Stage 2 | Allowance for Credit Losses      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 736 [1],[2],[3],[4] 680 [2],[4],[5] 626
Movements Including New Business 178 [1],[3] 194 [2],[4] 294
Transfers due to changes in creditworthiness (85) [1],[3] (128) [2],[4] (150)
Changes in models 91 [1],[3],[6] (7) [2],[4] (53)
Financial assets that have been derecognized during the period 0 [1],[3],[7],[8] 0 [2],[4],[9],[10] 0 [11]
Recovery of written off amounts 0 [1],[3] 0 [2],[4] 0
Foreign exchange and other changes (33) [1],[3] (3) [2],[4] (38)
Allowance for credit losses, end of reporting period 888 [1],[3] 736 [1],[2],[3],[4] 680 [2],[4]
Provision for Credit Losses excluding country risk 185 [3],[12],[13] 59 [4],[14],[15] 92 [16]
Stage 3      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 4,412    
Allowance for credit losses, end of reporting period 4,600 4,412  
Stage 3 | Allowance for Credit Losses      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 4,412 [1],[2],[3],[4] 3,960 [2],[4],[5] 3,656
Movements Including New Business 1,663 [1],[3] 1,814 [2],[4] 1,647
Transfers due to changes in creditworthiness (35) [1],[3] 0 [2],[4] (20)
Changes in models (155) [1],[3],[6] 0 [2],[4] 0
Financial assets that have been derecognized during the period (1,002) [1],[3],[7],[8] (1,229) [2],[4],[9],[10] (1,145) [11]
Recovery of written off amounts 164 [1],[3] 157 [2],[4] 93
Foreign exchange and other changes (447) [1],[3] (290) [2],[4] (271)
Allowance for credit losses, end of reporting period 4,600 [1],[3] 4,412 [1],[2],[3],[4] 3,960 [2],[4]
Provision for Credit Losses excluding country risk 1,473 [3],[12],[13] 1,814 [4],[14],[15] 1,627 [16]
Stage 3 POCI      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 213    
Allowance for credit losses, end of reporting period 247 213  
Stage 3 POCI | Allowance for Credit Losses      
Development of exposures and allowance for credit losses in the reporting period [Line Items]      
Allowance for credit losses, beginning of year 213 [1],[2],[3],[4],[17],[18],[19],[20] 198 [2],[4],[5],[18],[20],[21] 180 [21]
Movements Including New Business 9 [1],[3],[17],[19] 3 [2],[4],[18],[20] 32 [21]
Changes in models 0 [1],[3],[6],[17],[19] 0 [2],[4],[18],[20] 0 [21]
Financial assets that have been derecognized during the period 0 [1],[3],[7],[8],[17],[19] 0 [2],[4],[9],[10],[18],[20] (52) [11],[21]
Recovery of written off amounts 0 [1],[3],[17],[19] 0 [2],[4],[18],[20] 0 [21]
Foreign exchange and other changes 25 [1],[3],[17],[19] 11 [2],[4],[18],[20] 38 [21]
Allowance for credit losses, end of reporting period 247 [1],[3],[17],[19] 213 [1],[2],[3],[4],[17],[18],[19],[20] 198 [2],[4],[18],[20],[21]
Provision for Credit Losses excluding country risk € 9 [3],[12],[13],[17],[19] € 3 [4],[14],[15],[18],[20] € 32 [16],[21]
[1]   Allowance for credit losses does not include allowance for country risk amounting to € 7 million as of December 31, 2025
[2] Allowance for credit losses does not include allowance for country risk amounting to € 14 million as of December 31, 2024
[3] 1 Allowance for credit losses does not include allowance for country risk amounting to € 7 million as of December 31, 2025
[4] Allowance for credit losses does not include allowance for country risk amounting to € 14 million as of December 31, 2024
[5] 1 Allowance for credit losses does not include allowance for country risk amounting to € 4 million as of December 31, 2023
[6] 3  Changes in models primarily reflect LGD model update and changes to the SICR model
[7] This position represents charge offs of allowance for credit losses
[8] 4 This position represents charge offs of allowance for credit losses
[9] This position represents charge offs of allowance for credit losses
[10] This position represents charge offs of allowance for credit losses
[11] 3This position represents charge offs of allowance for credit losses
[12] Movements in financial assets including new business, transfers due to changes in creditworthiness and changes in models add up to Provision for Credit Losses excluding country risk
[13] 5 Movements in financial assets including new business, transfers due to changes in creditworthiness and changes in models add up to Provision for Credit Losses excluding
country risk
[14] Movements in financial assets including new business, transfers due to changes in creditworthiness and changes in models add up to Provision for Credit Losses excluding
country risk
[15] Movements in financial assets including new business, transfers due to changes in creditworthiness and changes in models add up to Provision for Credit Losses excluding
country risk
[16] 4Movements in financial assets including new business, transfers due to changes in creditworthiness and changes in models add up to Provision for Credit Losses excluding
country risk
[17] The total amount of undiscounted expected credit losses at initial recognition on financial assets that are purchased or originated credit-impaired initially recognized
during the reporting period was € 74 million in 2025 and € — million in 2024
5 Changes in models primarily reflect LGD model update and changes to the SICR model
[18] The total amount of undiscounted expected credit losses at initial recognition on financial assets that are purchased or originated credit-impaired initially recognized
during the reporting period was € — million in 2024 and € — million in 2023
[19] 2 The total amount of undiscounted expected credit losses at initial recognition on financial assets that are purchased or originated credit-impaired initially recognized
during the reporting period was € 74 million in 2025 and € — million in 2024
[20] The total amount of undiscounted expected credit losses at initial recognition on financial assets that are purchased or originated credit-impaired initially recognized
during the reporting period was €— million in 2024 and €— million in 2023
[21] 2 The total amount of undiscounted expected credit losses at initial recognition on financial assets that are purchased or originated credit-impaired initially recognized
during the reporting period was € — million in 2023 and € 46 million in 2022