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Municipal Bond Guarantee Insurance - Schedule of Net Written Premiums (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Written premiums: |  |  |  |
Direct |  | $ 16.5 | $ 24.1 | $ 37.3
Assumed |  | 0.0 | 14.0 | 0.0
Gross written premiums |  | 16.5 | 38.1 | 37.3
Earned premiums: |  |  |  |
Direct |  | 7.4 | 15.8 | 21.4
Assumed |  | 0.5 | 8.5 | 1.9
Gross earned premiums |  | 7.9 | 24.3 | 23.3
Financial Guarantee (HG Global) |  |  |  |
Written premiums: |  |  |  |
Direct | $ 0.0 | 0.0 | 0.0 | 0.0
Assumed | 14.0 | 14.2 | 34.5 | 31.9
Gross written premiums | 14.0 | 14.2 | 34.5 | 31.9
Earned premiums: |  |  |  |
Direct | 0.0 | 0.0 | 0.0 | 0.0
Assumed | 7.5 | 6.6 | 21.5 | 19.4
Gross earned premiums | $ 7.5 | 6.6 | 21.5 | 19.4
BAM |  |  |  |
Written premiums: |  |  |  |
Direct |  | 16.5 | 24.1 | 37.3
Assumed |  | 0.0 | 0.0 | 0.0
Gross written premiums |  | 16.5 | 24.1 | 37.3
Earned premiums: |  |  |  |
Direct |  | 7.4 | 15.8 | 21.4
Assumed |  | 0.5 | 1.0 | 1.9
Gross earned premiums |  | 7.9 | 16.8 | 23.3
Eliminations |  |  |  |
Written premiums: |  |  |  |
Direct |  | 0.0 | 0.0 | 0.0
Assumed |  | (14.2) | (20.5) | (31.9)
Gross written premiums |  | (14.2) | (20.5) | (31.9)
Earned premiums: |  |  |  |
Direct |  | 0.0 | 0.0 | 0.0
Assumed |  | (6.6) | (14.0) | (19.4)
Gross earned premiums |  | $ (6.6) | $ (14.0) | $ (19.4)

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