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Risk Report - Asset Quality - Financial Assets at amortized cost - Forborne financial assets at amortized cost (Detail) - EUR (€)
€ in Millions
Dec. 31, 2023
Dec. 31, 2022
Stages of Forborne financial assets at amortized cost [Domain Member] | Total Forebone financial assets at amortized cost [Member]    
Forborne financial assets at amortized cost [Line Items]    
German € 3,600 € 3,379
Non-German 8,864 7,764
Total Forborne financial assets at amortized cost (German and Non German) 12,464 11,143
Stage 1 [Member] | Performing Forborne financial assets at amortized cost [Member]    
Forborne financial assets at amortized cost [Line Items]    
German 426 729
Non-German 639 1,254
Total Forborne financial assets at amortized cost (German and Non German) 1,065 1,983
Stage 1 [Member] | Non performing Forborne financial assets at amortized cost [Member]    
Forborne financial assets at amortized cost [Line Items]    
German 0 0
Non-German 0 60
Total Forborne financial assets at amortized cost (German and Non German) 0 60
Stage 2 [Member] | Performing Forborne financial assets at amortized cost [Member]    
Forborne financial assets at amortized cost [Line Items]    
German 2,356 1,563
Non-German 4,399 3,139
Total Forborne financial assets at amortized cost (German and Non German) 6,755 4,702
Stage 2 [Member] | Non performing Forborne financial assets at amortized cost [Member]    
Forborne financial assets at amortized cost [Line Items]    
German 7 21
Non-German 194 13
Total Forborne financial assets at amortized cost (German and Non German) 201 34
Stage 3 [Member] | Non performing Forborne financial assets at amortized cost [Member]    
Forborne financial assets at amortized cost [Line Items]    
German 812 1,066
Non-German 3,632 3,299
Total Forborne financial assets at amortized cost (German and Non German) € 4,444 € 4,365