Related parties - Number of ING Groep N.V. shares and stock options to key management personnel (Details) - shares |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Disclosure of key management personnel compensation [Line Items] | |||
| Issued share capital, ordinary shares (in shares) | 3,021,543,000 | 3,147,391,000 | 3,498,194,000 |
| ING Groep N.V. | Executive Board of ING Groep N.V. | |||
| Disclosure of key management personnel compensation [Line Items] | |||
| Issued share capital, ordinary shares (in shares) | 178,187 | 152,652 | |
| ING Groep N.V. | Management Board Banking | |||
| Disclosure of key management personnel compensation [Line Items] | |||
| Issued share capital, ordinary shares (in shares) | 415,008 | 343,055 | |
| ING Groep N.V. | Supervisory Board members | |||
| Disclosure of key management personnel compensation [Line Items] | |||
| Issued share capital, ordinary shares (in shares) | 9,395 | 5,295 |