v3.25.1
Basis of Presentation and Significant Accounting Policies (Details)
$ in Millions
3 Months Ended
Mar. 31, 2025
USD ($)
segment
Dec. 31, 2024
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Number of reportable segments | segment 4  
Percent of shares outstanding 12.30%  
Subsidiary - HG Global    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Purchase of surplus notes | $ $ 503.0  
Subsidiary - HG Global | Maximum    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Percentage of par value of policy reinsured 15.00%  
Subsidiary - Ark Insurance Holdings Limited    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Basic ownership 72.10% 72.10%
Ownership percentage, after equity incentives 61.90% 61.90%
Subsidiary - WM Outrigger Re | Preferred Stock    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Basic ownership 100.00% 100.00%
Subsidiary - HG Global | Preferred Stock    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Basic ownership 96.90% 96.90%
Subsidiary - HG Global | Common equity securities    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Basic ownership 88.40% 88.40%
Kudu    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Basic ownership 91.20%  
Ownership percentage of basic units outstanding   90.40%
Ownership percentage, fully diluted 77.90%  
Ownership percentage, fully converted   77.00%
Subsidiary - Bamboo Ide8 Insurance Services LLC    
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]    
Basic ownership 72.80% 72.80%
Ownership percentage, fully diluted 63.70% 63.70%