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Basis of Presentation and Significant Accounting Policies (Details) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) | Sep. 30, 2024 USD ($) segment | Apr. 30, 2024 USD ($) | Dec. 31, 2023 | Oct. 25, 2023 USD ($)
Basis of Presentation |  |  |  |  |
Number of reportable segments | segment |  | 4 |  |  |
Percent of shares outstanding |  | 12.30% |  |  |
Subsidiary - HG Global |  |  |  |  |
Basis of Presentation |  |  |  |  |
Purchase of surplus notes |  | $ 503.0 |  |  |
Subsidiary - HG Global | Maximum |  |  |  |  |
Basis of Presentation |  |  |  |  |
Percentage of par value of policy reinsured |  | 15.00% |  |  |
Subsidiary - WTM Partners |  |  |  |  |
Basis of Presentation |  |  |  |  |
Expected capital contributions |  |  |  |  | $ 500.0
Subsidiary - Ark Insurance Holdings Limited |  |  |  |  |
Basis of Presentation |  |  |  |  |
Ownership percentage |  | 72.00% |  | 72.00% |
Ownership percentage, after equity incentives |  | 61.90% |  | 61.90% |
Subsidiary - WM Outrigger Re | Preferred Stock |  |  |  |  |
Basis of Presentation |  |  |  |  |
Ownership percentage |  | 100.00% |  | 100.00% |
Subsidiary - HG Global | Preferred Stock |  |  |  |  |
Basis of Presentation |  |  |  |  |
Ownership percentage |  | 96.90% |  | 96.90% |
Subsidiary - HG Global | Common Stock |  |  |  |  |
Basis of Presentation |  |  |  |  |
Ownership percentage |  | 88.40% |  | 88.40% |
Subsidiary - Kudu Investment Management, LLC |  |  |  |  |
Basis of Presentation |  |  |  |  |
Ownership percentage |  | 90.10% |  |  |
Ownership percentage of basic units outstanding |  |  |  | 89.60% |
Ownership percentage, fully diluted |  | 76.80% |  |  |
Ownership percentage, fully converted |  |  |  | 76.30% |
Subsidiary - Bamboo Ide8 Insurance Services LLC |  |  |  |  |
Basis of Presentation |  |  |  |  |
Ownership percentage |  | 72.80% |  |  |
Ownership percentage, fully diluted |  | 63.70% |  |  |
Bamboo CRV |  |  |  |  |
Basis of Presentation |  |  |  |  |
Expected capital contributions |  | $ 30.0 | $ 30.0 |  |
Preference share purchased | $ 12.1 |  |  |  |

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