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v3.23.3

Outstanding Exposure - Additional Information (Details) $ in Millions |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 26, 2023 USD ($) | Sep. 30, 2023 USD ($) Category | Aug. 31, 2023 USD ($) | Jun. 23, 2023 USD ($) | Dec. 31, 2022 USD ($)
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Number of surveillance categories | Category |  | 3 |  |  |
Loss Mitigation Securities |  | $ 1,200 |  |  | $ 1,300
Net par outstanding |  | 241,833 | $ 108 |  | 233,258
Guarantor, maximum exposure |  | 1,600 |  |  |
Puerto Rico Electric Power Authority |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Plaintiff debt capacity |  |  |  | $ 2,500 |
Plaintiff debt capacity allocated to settling creditors |  |  |  | 1,400 |
Plaintiff debt capacity allocated to bondholders and general unsecured creditors |  |  |  | $ 1,100 |
Claim received as restructuring bonds, percent |  |  |  | 12.50% |
Puerto Rico Electric Power Authority | Guarantee Obligations |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Damages sought, estimate | $ 2,400 |  |  |  |
Calculated collection period | 100 years |  |  |  |
Calculated discount rate | 7.00% |  |  |  |
Calculated discounted cash flows | $ 3,000 |  |  |  |
Additional calculated riscount rate | 20.00% |  |  |  |
Damages sought | $ 8,500 |  |  |  |
Puerto Rico |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 1,105 |  |  | 1,361
Puerto Rico | Other Public Corporations |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 109 |  |  |
Puerto Rico | PRHTA |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 372 |  |  |
Public finance |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 231,721 |  |  | 224,099
Structured finance |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 10,112 |  |  | 9,159
Aircraft residual value insurance (RVI) |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Residual value insurance policies exposure downgraded |  | 355 |  |  | 355
Net Exposure |  | 200 |  |  | 200
Commitment to Provide Guarantees | Public finance |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Outstanding commitments to provide guaranties |  | 1,500 |  |  |
Commitment to Provide Guarantees | Structured finance |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Outstanding commitments to provide guaranties |  | $ 1,300 |  |  |
BIG |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Maximum period of liquidity claims (in years) |  | 1 year |  |  |
Net par outstanding |  | $ 5,174 |  |  | 5,892
BIG | Puerto Rico |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 1,100 |  |  | 1,400
BIG | Public finance |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 4,122 |  |  | 4,777
BIG | Structured finance |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Net par outstanding |  | 1,052 |  |  | 1,115
BIG | Aircraft residual value insurance (RVI) |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Residual value insurance policies exposure downgraded |  | 144 |  |  | 144
Net Exposure |  | $ 84 |  |  | $ 84
Minimum |  |  |  |  |
Schedule of Insured Financial Obligations [Line Items] |  |  |  |  |
Probability of paying more claims than being reimbursed (as a percent) |  | 50.00% |  |  |

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