v3.25.4
Risk management - Cover values including guarantees received - Total ING Bank (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of credit risk exposure [line items]    
Outstandings € 1,002,947 € 961,863
Percentage for no covers 99.60%  
Percentage of residential mortgage oustanding 40.60% 39.40%
Non-performing loans    
Disclosure of credit risk exposure [line items]    
Outstandings € 12,995 € 13,303
Investment grade    
Disclosure of credit risk exposure [line items]    
Outstandings € 795,507 € 750,822
Investment grade | Netherlands    
Disclosure of credit risk exposure [line items]    
Percentage of residential mortgage oustanding 35.00% 35.00%
Investment grade | Germany    
Disclosure of credit risk exposure [line items]    
Percentage of residential mortgage oustanding 27.00% 27.30%
Investment grade | Belgium & Luxembourg    
Disclosure of credit risk exposure [line items]    
Percentage of residential mortgage oustanding 12.00% 12.20%
Investment grade | Australia    
Disclosure of credit risk exposure [line items]    
Percentage of residential mortgage oustanding 10.90% 10.60%
Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Outstandings € 942,727 € 900,894
Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Outstandings 12,981 13,295
Consumer lending    
Disclosure of credit risk exposure [line items]    
Outstandings 407,552 378,832
Business lending    
Disclosure of credit risk exposure [line items]    
Outstandings € 383,536 € 368,570
Percentage of total outstandings 38.20% 38.30%
Investment and money market    
Disclosure of credit risk exposure [line items]    
Outstandings € 151,639 € 153,493
Pre-settlement    
Disclosure of credit risk exposure [line items]    
Outstandings € 60,220 € 60,968
No cover | Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Collateralisation 36.60% 33.60%
No cover | Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Collateralisation 33.00% 27.60%
No cover | Consumer lending    
Disclosure of credit risk exposure [line items]    
Collateralisation 7.80% 6.50%
No cover | Business lending    
Disclosure of credit risk exposure [line items]    
Collateralisation 42.10% 34.10%
No cover | Investment and money market    
Disclosure of credit risk exposure [line items]    
Collateralisation 99.60% 99.30%
Partially covered | Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Collateralisation 7.30% 10.50%
Partially covered | Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Collateralisation 18.50% 27.70%
Partially covered | Consumer lending    
Disclosure of credit risk exposure [line items]    
Collateralisation 2.00% 2.00%
Partially covered | Business lending    
Disclosure of credit risk exposure [line items]    
Collateralisation 15.80% 23.70%
Partially covered | Investment and money market    
Disclosure of credit risk exposure [line items]    
Collateralisation 0.00% 0.00%
Fully covered | Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Collateralisation 56.10% 55.90%
Fully covered | Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Collateralisation 48.50% 44.70%
Fully covered | Consumer lending    
Disclosure of credit risk exposure [line items]    
Collateralisation 90.20% 91.50%
Fully covered | Business lending    
Disclosure of credit risk exposure [line items]    
Collateralisation 42.10% 42.20%
Fully covered | Investment and money market    
Disclosure of credit risk exposure [line items]    
Collateralisation 0.40% 0.70%
Mortgages | Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value € 1,091,304 € 1,028,609
Mortgages | Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Cover type and value 9,827 10,427
Mortgages | Consumer lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 905,028 865,466
Mortgages | Business lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 186,276 163,143
Mortgages | Investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value 0 0
Financial Collateral | Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value 37,151 31,095
Financial Collateral | Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Cover type and value 196 194
Financial Collateral | Consumer lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 5,317 6,257
Financial Collateral | Business lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 31,834 24,838
Financial Collateral | Investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value 0 0
Guarantees | Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value 205,932 145,953
Guarantees | Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Cover type and value 2,771 3,093
Guarantees | Consumer lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 37,473 25,428
Guarantees | Business lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 166,953 119,410
Guarantees | Investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value 1,506 1,115
Other covers | Total lending, investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value 216,019 539,357
Other covers | Total lending, investment and money market | Non-performing loans    
Disclosure of credit risk exposure [line items]    
Cover type and value 3,591 11,109
Other covers | Consumer lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 842 55,115
Other covers | Business lending    
Disclosure of credit risk exposure [line items]    
Cover type and value 215,177 484,148
Other covers | Investment and money market    
Disclosure of credit risk exposure [line items]    
Cover type and value € 0 € 95