v3.26.1
Municipal Bond Guarantee Insurance - Schedule of Net Written Premiums (Details) - HG Global - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Written premiums:    
Direct $ 0.0 $ 0.0
Assumed 8.3 6.7
Gross written premiums 8.3 6.7
Earned premiums:    
Direct 0.0 0.0
Assumed 7.7 8.2
Gross earned premiums $ 7.7 $ 8.2