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Outstanding Exposure - Puerto Rico Net Par Outstanding (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | $ 233,258 | $ 236,392
Puerto Rico |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 1,361 | 3,572
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 509 | 2,643
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement | PRHTA (Transportation revenue) |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 298 | 799
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement | PRHTA (Highway revenue) |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 182 | 457
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement | Commonwealth of Puerto Rico - GO |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 25 | 1,097
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement | PBA |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 4 | 122
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement | PRCCDA |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 0 | 152
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement | PRIFA |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 0 | 16
Puerto Rico | Puerto Rico Exposures Subject to a Plan Support Agreement | PREPA |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 720 | 748
Puerto Rico | Other Puerto Rico Exposures |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 852 | 929
Puerto Rico | Other Puerto Rico Exposures | MFA |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | 131 | 179
Puerto Rico | Other Puerto Rico Exposures | PRAASA and U of PR |  |
Schedule of Insured Financial Obligations [Line Items] |  |
Net Par Outstanding | $ 1 | $ 2

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- Definition Represents the outstanding principal amounts of the underlying insured obligations for financial guaranty contracts, after netting out ceded contracts. + References No definition available. + Details
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