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Financial Guaranty Variable Interest Entities and Consolidated Investment Vehicles - Schedule of Redeemable Noncontrolling Interest of Consolidated Investment Vehicle (Details) - Variable Interest Entity, Primary Beneficiary - Consolidated Investment Vehicles - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Redeemable Noncontrolling Interest, Equity, Other, Fair Value, Rollforward [Roll Forward] |  |  |
Beginning balance | $ 22 | $ 21 | $ 7
Net income (loss) attributable to the redeemable NCI | (1) | 1 | (1)
Reallocation of ownership interests | 0 | 0 | (10)
Reclassification to liabilities as mandatorily redeemable NCI | (21) | 0 | 0
Contributions | 21 | 0 | 25
Distributions | (21) | 0 | 0
Ending balance | $ 0 | $ 22 | $ 21

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- Definition Redeemable Noncontrolling Interest, Equity, Other, Contributions to Investment Vehicles + References No definition available. + Details
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- Definition Redeemable Noncontrolling Interest, Equity, Other, Distributions From Investment Vehicles + References No definition available. + Details
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- Definition Amount of Net Income (Loss) attributable to redeemable noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.19) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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