v3.25.2
Significant Transactions - Schedule of Assets Acquired and Liabilities Assumed, Bamboo (Details) - USD ($)
$ in Millions
Jan. 02, 2024
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Other Significant Transactions [Line Items]              
Goodwill   $ 534.6 $ 439.2 $ 439.2 $ 439.2 $ 439.2 $ 168.8
Bamboo Ide8 Insurance Services LLC              
Other Significant Transactions [Line Items]              
Cash contributions for transaction $ 20.0            
Bamboo Ide8 Insurance Services LLC              
Other Significant Transactions [Line Items]              
Fixed maturity investments, at fair value 8.2            
Short-term investments, at fair value 9.3            
Restricted cash 37.0            
Cash (restricted $37.0) 44.9            
Premiums and commissions receivable 38.0            
Other assets 7.7            
Total tangible assets 108.1            
Loss and loss adjustment expense reserves (9.3)            
Unearned insurance premiums (20.1)            
Premiums and commissions payable (49.2)            
Other liabilities (13.1)            
Total tangible liabilities (91.7)            
Net tangible assets acquired 16.4            
Goodwill 270.4            
Other intangible assets 101.0            
Total goodwill and other intangible assets 371.4            
Net assets acquired $ 387.8