v3.25.4
Offsetting Financial Assets and Financial Liabilities - Offsetting Liabilities (Detail) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of offsetting of financial liabilities [line items]      
Deposits € 695,000 € 668,000 € 625,000
Gross amounts of financial liabilities | enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Central bank funds purchased and securities sold under repurchase agreements 26,665 16,819  
Securities loaned 2 1  
Financial liabilities at fair value through profit or loss 608,837 609,711  
Negative market values from derivative financial instruments 233,209 284,351  
Of which: Negative market values from derivatives qualifying for hedge accounting 187 1,699  
Gross amounts of financial liabilities | non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Deposits 694,580 667,700  
Central bank funds purchased and securities sold under repurchase agreements 1,970 1,350  
Securities loaned 0 1  
Financial liabilities at fair value through profit or loss 36,584 35,382  
Negative market values from derivative financial instruments 6,352 8,672  
Remaining liabilities not subject to netting 136,937 129,700  
Gross amounts of financial liabilities | enforceable and non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Financial liabilities at fair value through profit or loss 645,421 [1] 645,092  
Other liabilities 142,609 100,165  
Total liabilities 1,648,184 1,560,829  
Gross amounts set off on the balance sheet | enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Central bank funds purchased and securities sold under repurchase agreements (24,458) (14,429)  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss (261,191) (232,683)  
Negative market values from derivative financial instruments (13,734) (16,613)  
Of which: Negative market values from derivatives qualifying for hedge accounting (16) (24)  
Gross amounts set off on the balance sheet | non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Deposits 0 0  
Central bank funds purchased and securities sold under repurchase agreements 0 0  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss 0 0  
Negative market values from derivative financial instruments 0 0  
Remaining liabilities not subject to netting 0 0  
Gross amounts set off on the balance sheet | enforceable and non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Financial liabilities at fair value through profit or loss (261,191) [1] (232,683)  
Other liabilities (4,948) (4,549)  
Total liabilities (290,597) (251,661)  
Net amounts of financial liabilities presented on the balance sheet | enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Central bank funds purchased and securities sold under repurchase agreements 2,207 2,390  
Securities loaned 2 1  
Financial liabilities at fair value through profit or loss 347,646 377,028  
Negative market values from derivative financial instruments 219,474 267,738  
Of which: Negative market values from derivatives qualifying for hedge accounting 172 1,676  
Net amounts of financial liabilities presented on the balance sheet | non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Deposits 694,580 667,700  
Central bank funds purchased and securities sold under repurchase agreements 1,970 1,350  
Securities loaned 0 1  
Financial liabilities at fair value through profit or loss 36,584 35,382  
Negative market values from derivative financial instruments 6,352 8,672  
Remaining liabilities not subject to netting 136,937 129,700  
Net amounts of financial liabilities presented on the balance sheet | enforceable and non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Financial liabilities at fair value through profit or loss 384,230 [1] 412,409  
Other liabilities 137,662 95,616  
Total liabilities 1,357,588 1,309,168  
Amounts not set off on the balance sheet, Impact of Master Netting Agreements | enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Central bank funds purchased and securities sold under repurchase agreements 0 0  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss (182,953) (230,472)  
Negative market values from derivative financial instruments (181,109) (228,718)  
Of which: Negative market values from derivatives qualifying for hedge accounting (142) (1,098)  
Amounts not set off on the balance sheet, Impact of Master Netting Agreements | non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Deposits 0 0  
Central bank funds purchased and securities sold under repurchase agreements 0 0  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss 0 0  
Negative market values from derivative financial instruments 0 0  
Remaining liabilities not subject to netting 0 0  
Amounts not set off on the balance sheet, Impact of Master Netting Agreements | enforceable and non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Financial liabilities at fair value through profit or loss (182,953) [1] (230,472)  
Other liabilities (36,132) (37,086)  
Total liabilities (219,085) (267,559)  
Amounts not set off on the balance sheet, Cash collateral | enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Central bank funds purchased and securities sold under repurchase agreements 0 0  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss (24,052) (23,677)  
Negative market values from derivative financial instruments (24,052) (23,677)  
Of which: Negative market values from derivatives qualifying for hedge accounting (13) (91)  
Amounts not set off on the balance sheet, Cash collateral | non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Deposits 0 0  
Central bank funds purchased and securities sold under repurchase agreements 0 0  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss (502) (607)  
Negative market values from derivative financial instruments (502) (607)  
Remaining liabilities not subject to netting 0 (6)  
Amounts not set off on the balance sheet, Cash collateral | enforceable and non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Financial liabilities at fair value through profit or loss (24,554) [1] (24,285)  
Other liabilities (13) (91)  
Total liabilities (24,567) (24,382)  
Amounts not set off on the balance sheet, Financial instrument collateral | enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Central bank funds purchased and securities sold under repurchase agreements (2,205) (2,390)  
Securities loaned (2) (1)  
Financial liabilities at fair value through profit or loss (85,185) (66,495)  
Negative market values from derivative financial instruments (1,737) (2,458)  
Of which: Negative market values from derivatives qualifying for hedge accounting (2) (101)  
Amounts not set off on the balance sheet, Financial instrument collateral | non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Deposits 0 0  
Central bank funds purchased and securities sold under repurchase agreements (5) (123)  
Securities loaned 0 (1)  
Financial liabilities at fair value through profit or loss (969) (3,332)  
Negative market values from derivative financial instruments (85) (142)  
Remaining liabilities not subject to netting 0 0  
Amounts not set off on the balance sheet, Financial instrument collateral | enforceable and non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Financial liabilities at fair value through profit or loss (86,154) [1] (69,828)  
Other liabilities (2) (101)  
Total liabilities (88,368) (72,444)  
Net amount | enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Central bank funds purchased and securities sold under repurchase agreements 2 0  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss 55,456 56,383  
Negative market values from derivative financial instruments 12,576 12,884  
Of which: Negative market values from derivatives qualifying for hedge accounting 15 386  
Net amount | non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Deposits 694,580 667,700  
Central bank funds purchased and securities sold under repurchase agreements 1,965 1,227  
Securities loaned 0 0  
Financial liabilities at fair value through profit or loss 35,113 31,442  
Negative market values from derivative financial instruments 5,766 7,923  
Remaining liabilities not subject to netting 136,937 129,694  
Net amount | enforceable and non-enforceable      
Disclosure of offsetting of financial liabilities [line items]      
Financial liabilities at fair value through profit or loss 90,568 [1] 87,825  
Other liabilities 101,516 58,338  
Total liabilities € 1,025,568 € 944,784  
[1] 1 In accordance with Note 12 ‘Financial assets/liabilities at fair value through profit or loss’ the position is predominately comprised of trading securities (asset), trading
securities (liability), securities purchased and sold under resale agreements accounted at fair value through profit or loss as well as positive and negative market values
from derivative financial instruments