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Financial Guaranty Variable Interest Entities and Consolidated Investment Vehicles - Contractual Maturity (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Aug. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Estimated Fair Value |  |  |
Estimated Fair Value | $ 6,267 |  | $ 7,119
Variable Interest Entity, Primary Beneficiary | Financial Guaranty Variable Interest Entities | Puerto Rico Trusts |  |  |
Amortized Cost |  |  |
Due after five years through 10 years | 28 |  |
Due after 10 years | 108 |  |
Total | 136 |  |
Estimated Fair Value |  |  |
Due after five years through 10 years | 30 |  |
Due after 10 years | 116 |  |
Estimated Fair Value | $ 146 | $ 73 | $ 204

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