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v3.23.1

Municipal Bond Guarantee Insurance - Schedule of Net Written Premiums (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Earned premiums: |  |
Net earned premiums | $ 262.8 | $ 202.8
HG/BAM |  |
Written premiums: |  |
Direct | 9.2 | 9.4
Assumed | 0.0 | 0.0
Net written premiums | 9.2 | 9.4
Earned premiums: |  |
Direct | 7.0 | 7.6
Assumed | 0.7 | 0.8
Net earned premiums | $ 7.7 | $ 8.4

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