Auditor's Remuneration - Summary of Accountants Remuneration (Detail) - EUR (€) € in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| The Netherlands [member] | ||
| Auditors remuneration [Line Items] | ||
| Audit fees | € 6 | € 6 |
| Audit-related service fees | 1 | 0 |
| Tax | 0 | 0 |
| Total | 7 | 6 |
| Aegon Ltd. [member] | ||
| Auditors remuneration [Line Items] | ||
| Audit fees | 34 | 32 |
| Audit-related service fees | 5 | 5 |
| Tax | 0 | 0 |
| Total | € 38 | € 37 |