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Financial Guaranty Variable Interest Entities and Consolidated Investment Vehicles - Roll Forward of Number of Consolidated CIVs (Details) - Consolidated Investment Vehicles $ in Millions | 6 Months Ended
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Jun. 30, 2022 USD ($) consolidatedInvestmentVehicle | Jun. 30, 2022 USD ($) fund | Jun. 30, 2022 USD ($) Entity | Jun. 30, 2021 Entity fund
CLO Warehouse |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Number of financial assets securitized | fund |  | 2 |  | 2
Variable Interest Entity, Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Beginning of year | 20 |  | 20 | 11
Consolidated |  |  | 2 | 5
Deconsolidated (1) |  |  | (1) | (1)
June 30, | 21 |  | 21 | 15
Deconsolidation, net assets | $ | $ 417 | $ 417 | $ 417 |

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- Definition Deconsolidation, Net Assets + References No definition available. + Details
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- Definition Number Of Financial Assets Securitized + References No definition available. + Details
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- Definition Variable Interest Entities, Number of Entities Consolidated in the Period + References No definition available. + Details
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- Definition Variable Interest Entities, Number of Entities Deconsolidated in the Period + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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