Capital Management and Solvency - Summary of Capital Ratios of Aegon's Operating Units (Detail) |
Dec. 31, 2025 |
[1] | Dec. 31, 2024 |
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|---|---|---|---|---|---|
| United States [member] | |||||
| Disclosure In Tabular Form Of Capital Ratios Of Operating Units [Line Items] | |||||
| Risk based capital ratio | 424.00% | 443.00% | |||
| United Kingdom [member] | |||||
| Disclosure In Tabular Form Of Capital Ratios Of Operating Units [Line Items] | |||||
| Equitable solvency two ratio | 183.00% | 186.00% | |||
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