v3.25.2
Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Balance Sheet Grouping, Financial Statement Captions    
Carrying Value $ 694.6 $ 562.5
Ark 2021 Subordinated Notes    
Balance Sheet Grouping, Financial Statement Captions    
Fair Value 179.8 173.9
Carrying Value 158.9 154.5
HG Global Senior Notes    
Balance Sheet Grouping, Financial Statement Captions    
Fair Value 154.9 157.2
Carrying Value 147.6 147.4
Kudu Credit Facility    
Balance Sheet Grouping, Financial Statement Captions    
Fair Value 260.8 253.3
Carrying Value 246.8 238.6
Bamboo Credit Facility    
Balance Sheet Grouping, Financial Statement Captions    
Fair Value 106.8 0.0
Carrying Value 104.6 0.0
Other Operations debt    
Balance Sheet Grouping, Financial Statement Captions    
Fair Value 37.9 23.1
Carrying Value $ 36.7 $ 22.0