v3.25.4
Long-Term Debt and Trust Preferred Securities - Long-Term Debt by Contractual Maturity (Detail) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Total Maturities    
By remaining maturities    
Long-term debt € 114,754 € 114,899
Total Maturities | Senior debt, bonds and notes    
By remaining maturities    
Fixed rate 67,920 71,414
Floating rate 12,281 11,196
Other 26,256 20,578
Total Maturities | Subordinated debt, bonds and notes    
By remaining maturities    
Fixed rate 8,212 11,626
Floating rate 0 0
Other 85 € 85
Within 1 year    
By remaining maturities    
Long-term debt 22,175  
Within 1 year | Senior debt, bonds and notes    
By remaining maturities    
Fixed rate 14,050  
Floating rate 2,508  
Other 3,550  
Within 1 year | Subordinated debt, bonds and notes    
By remaining maturities    
Fixed rate 2,024  
Floating rate 0  
Other 42  
Later than one year and not later than two years    
By remaining maturities    
Long-term debt 19,839  
Later than one year and not later than two years | Senior debt, bonds and notes    
By remaining maturities    
Fixed rate 12,269  
Floating rate 2,817  
Other 2,369  
Later than one year and not later than two years | Subordinated debt, bonds and notes    
By remaining maturities    
Fixed rate 2,363  
Floating rate 0  
Other 20  
Later than two years and not later than three years    
By remaining maturities    
Long-term debt 16,006  
Later than two years and not later than three years | Senior debt, bonds and notes    
By remaining maturities    
Fixed rate 13,269  
Floating rate 517  
Other 2,220  
Later than two years and not later than three years | Subordinated debt, bonds and notes    
By remaining maturities    
Fixed rate 0  
Floating rate 0  
Other 0  
Later than three years and not later than four years    
By remaining maturities    
Long-term debt 13,263  
Later than three years and not later than four years | Senior debt, bonds and notes    
By remaining maturities    
Fixed rate 10,368  
Floating rate 1,050  
Other 1,845  
Later than three years and not later than four years | Subordinated debt, bonds and notes    
By remaining maturities    
Fixed rate 0  
Floating rate 0  
Other 0  
Later than four years and not later than five years    
By remaining maturities    
Long-term debt 12,371  
Later than four years and not later than five years | Senior debt, bonds and notes    
By remaining maturities    
Fixed rate 8,854  
Floating rate 1,918  
Other 1,152  
Later than four years and not later than five years | Subordinated debt, bonds and notes    
By remaining maturities    
Fixed rate 424  
Floating rate 0  
Other 23  
Later than five years    
By remaining maturities    
Long-term debt 31,101  
Later than five years | Senior debt, bonds and notes    
By remaining maturities    
Fixed rate 9,109  
Floating rate 3,471  
Other 15,120  
Later than five years | Subordinated debt, bonds and notes    
By remaining maturities    
Fixed rate 3,401  
Floating rate 0  
Other € 0