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Intangible Assets - Information (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets and goodwill | $ 19.9 | $ 21.7
Goodwill | 2.1 |
Digital Re |  |
Finite-Lived Intangible Assets [Line Items] |  |
Goodwill, impairment loss | 1.8 |
Aspen trademark |  |
Finite-Lived Intangible Assets [Line Items] |  |
Value of the asset | 1.1 |
Insurance Licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Value of the asset | $ 16.7 |

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