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Financial Guarantee Insurance Contracts - Summary of Gross Premium Receivable Roll-Forward (Direct and Assumed Contracts) (Details) $ in Thousands, € in Millions, £ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2022 GBP (£) | Jun. 30, 2022 EUR (€) | Jun. 30, 2021 USD ($) | Jun. 30, 2021 GBP (£) | Jun. 30, 2021 EUR (€) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Insurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts, Premiums and Other Receivables | $ 6,000 |  |  | $ 11,000 |  |  | $ 6,000 | $ 11,000 | $ 8,000 | $ 9,000 | $ 13,000 | $ 17,000
Financial Guarantee Insurance Contracts, Accelerated Premium Revenue, Amount | 2,344 |  |  | 91 |  |  | 6,267 | 1,039 |  |  |  |
Past Due Premiums Receivable | 41 |  |  |  |  |  | 41 |  |  | 49 |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning premium receivable |  |  |  |  |  |  | 320,000 | 370,000 |  |  |  |
Premium receipts |  |  |  |  |  |  | 22,000 | 19,000 |  |  |  |
Adjustments for changes in expected and contractual cash flows |  |  |  |  |  |  | (5,000) | (17,000) |  |  |  |
Accretion of premium receivable discount |  |  |  |  |  |  | 4,000 | 4,000 |  |  |  |
Uncollectable premiums |  |  |  |  |  |  | 3,000 | 6,000 |  |  |  |
Other adjustments (including foreign exchange) |  |  |  |  |  |  | (12,000) | 0 |  |  |  |
Ending premium receivable | 288,000 |  |  | 344,000 |  |  | 288,000 | 344,000 |  |  |  |
Premium Receivable, Allowance for Credit Loss | 6,000 |  |  |  |  |  | 6,000 |  |  | 9,000 |  |
Premium Receivable, Credit Loss Expense (Reversal) | (1,000) |  |  | (1,000) |  |  | (2,000) | (5,000) |  |  |  |
Premium Receivable, Allowance for Credit Loss, Writeoff | (1,000) |  |  | (1,000) |  |  | (1,000) | (1,000) |  |  |  |
Premium Receivable, Allowance for Credit Loss, Recovery | 0 |  |  | 0 |  |  | 0 | 0 |  |  |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 26 |  |  |  |  |  | 26 |  |  | 34 |  |
Premiums Receivable, Gross | 295,000 |  |  |  |  |  | 295,000 |  |  | 329,000 |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 846,000 |  |  | 1,123,000 |  |  | 846,000 | 1,123,000 | $ 974,000 | 1,098,000 | $ 1,123,000 | $ 1,140,000
Premiums Receivable, Net | 311,000 |  |  |  |  |  | 311,000 |  |  | 323,000 |  |
Specialty Property & Casualty Program |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 22,000 |  |  |  |  |  | 22,000 |  |  | 2,000 |  |
Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 155,000 |  |  |  |  |  | 155,000 |  |  | 159,000 |  |
Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 34,000 |  |  |  |  |  | 34,000 |  |  | 45,000 |  |
International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 106,000 |  |  |  |  |  | 106,000 |  |  | 125,000 |  |
I/SL [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 250,000 |  |  |  |  |  | 250,000 |  |  | 277,000 |  |
I/SL [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 147,000 |  |  |  |  |  | 147,000 |  |  | 151,000 |  |
I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 14,000 |  |  |  |  |  | 14,000 |  |  | 19,000 |  |
I/SL [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 89,000 |  |  |  |  |  | 89,000 |  |  | 107,000 |  |
IA [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 11,000 |  |  |  |  |  | 11,000 |  |  | 12,000 |  |
IA [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 3,000 |  |  |  |  |  | 3,000 |  |  | 3,000 |  |
IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 1,000 |  |  |  |  |  | 1,000 |  |  | 1,000 |  |
IA [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 7,000 |  |  |  |  |  | 7,000 |  |  | 8,000 |  |
II [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |  |  | 6,000 |  |
II [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |  |  | 5,000 |  |
II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 1,000 |  |
II [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
III [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 17,000 |  |  |  |  |  | 17,000 |  |  | 22,000 |  |
III [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 8,000 |  |  |  |  |  | 8,000 |  |  | 12,000 |  |
III [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 9,000 |  |  |  |  |  | 9,000 |  |  | 11,000 |  |
IV [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 12,000 |  |  |  |  |  | 12,000 |  |  | 12,000 |  |
IV [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 12,000 |  |  |  |  |  | 12,000 |  |  | 12,000 |  |
IV [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
United Kingdom, Pounds |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Ending premium receivable | 91,000 | £ 74 |  | 122,000 | £ 88 |  | 91,000 | 122,000 |  |  |  |
Euro Member Countries, Euro |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Ending premium receivable | 15,000 |  | € 14 | $ 16,000 |  | € 13 | 15,000 | $ 16,000 |  |  |  |
Other Public Finance Sectors [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 2,000 |  |  |  |  |  | 2,000 |  |  | 2,000 |  |
Other Public Finance Sectors [Member] | I/SL [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 2,000 |  |  |  |  |  | 2,000 |  |  | 2,000 |  |
Other Public Finance Sectors [Member] | IA [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other Public Finance Sectors [Member] | II [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other Public Finance Sectors [Member] | III [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other Public Finance Sectors [Member] | IV [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other International [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |  |  | 5,000 |  |
Other International [Member] | I/SL [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |  |  | 5,000 |  |
Other International [Member] | IA [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other International [Member] | II [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other International [Member] | III [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other International [Member] | IV [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Mortgage Backed And Home Equity [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 13,000 |  |  |  |  |  | 13,000 |  |  | 16,000 |  |
Mortgage Backed And Home Equity [Member] | I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 1,000 |  |
Mortgage Backed And Home Equity [Member] | IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Mortgage Backed And Home Equity [Member] | II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 1,000 |  |
Mortgage Backed And Home Equity [Member] | III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 2,000 |  |
Mortgage Backed And Home Equity [Member] | IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 12,000 |  |  |  |  |  | 12,000 |  |  | 12,000 |  |
Structured Insurance [Domain] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 7,000 |  |  |  |  |  | 7,000 |  |  | 10,000 |  |
Structured Insurance [Domain] | I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 7,000 |  |  |  |  |  | 7,000 |  |  | 10,000 |  |
Structured Insurance [Domain] | IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Structured Insurance [Domain] | II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Structured Insurance [Domain] | III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Structured Insurance [Domain] | IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Student Loans [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 10,000 |  |  |  |  |  | 10,000 |  |  | 12,000 |  |
Student Loans [Member] | I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 1,000 |  |  |  |  |  | 1,000 |  |  | 1,000 |  |
Student Loans [Member] | IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 1,000 |  |  |  |  |  | 1,000 |  |  | 1,000 |  |
Student Loans [Member] | II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Student Loans [Member] | III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 8,000 |  |  |  |  |  | 8,000 |  |  | 9,000 |  |
Student Loans [Member] | IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other Structured Finance [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |  |  | 7,000 |  |
Other Structured Finance [Member] | I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |  |  | 7,000 |  |
Other Structured Finance [Member] | IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other Structured Finance [Member] | II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other Structured Finance [Member] | III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Other Structured Finance [Member] | IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Sovereign And Sub Sovereign [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 83,000 |  |  |  |  |  | 83,000 |  |  | 93,000 |  |
Sovereign And Sub Sovereign [Member] | I/SL [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 67,000 |  |  |  |  |  | 67,000 |  |  | 74,000 |  |
Sovereign And Sub Sovereign [Member] | IA [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 7,000 |  |  |  |  |  | 7,000 |  |  | 8,000 |  |
Sovereign And Sub Sovereign [Member] | II [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Sovereign And Sub Sovereign [Member] | III [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 9,000 |  |  |  |  |  | 9,000 |  |  | 11,000 |  |
Sovereign And Sub Sovereign [Member] | IV [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Investor Owned And Public Utilities [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 18,000 |  |  |  |  |  | 18,000 |  |  | 28,000 |  |
Investor Owned And Public Utilities [Member] | I/SL [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 18,000 |  |  |  |  |  | 18,000 |  |  | 28,000 |  |
Investor Owned And Public Utilities [Member] | IA [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Investor Owned And Public Utilities [Member] | II [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Investor Owned And Public Utilities [Member] | III [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Investor Owned And Public Utilities [Member] | IV [Member] | International Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Housing Revenue [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 153,000 |  |  |  |  |  | 153,000 |  |  | 157,000 |  |
Housing Revenue [Member] | I/SL [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 145,000 |  |  |  |  |  | 145,000 |  |  | 149,000 |  |
Housing Revenue [Member] | IA [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 3,000 |  |  |  |  |  | 3,000 |  |  | 3,000 |  |
Housing Revenue [Member] | II [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |  |  | 5,000 |  |
Housing Revenue [Member] | III [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |  |  | 0 |  |
Housing Revenue [Member] | IV [Member] | Public Finance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Premiums Receivable, Gross | $ 0 |  |  |  |  |  | $ 0 |  |  | $ 0 |  |

X
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- Definition Past Due Premiums Receivable + References No definition available. + Details
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X
- Definition The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
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X
- Definition This element represents the amount of premium revenue on financial guarantee insurance contracts recognized during the period that was accelerated for revenue recognition purposes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6933581&loc=SL5749298-161291 + Details
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X
- Definition Amount of the premium receivable for financial guarantee insurance contracts reported in the statement of financial position. This element primarily would consist of those financial guarantee insurance contracts which premiums are to be collected over the contract period, but may, on occasion, include premiums which are to be collected in full at inception, but which straddle a financial reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (c)(1),(5) -URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290 + Details
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X
- Definition Amount of cash inflow from premiums received for premium receivable on financial guarantee insurance contracts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290 + Details
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X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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X
- Definition Amount of accretion of the discount for premiums receivable on financial guarantee insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (c)(4)(iii) -URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290 + Details
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X
- Definition Amount of increase (decrease) in the premium receivable on financial guarantee insurance contracts from changes in the period of the contract. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (c)(4)(i) -URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290 + Details
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X
- Definition Amount of increase (decrease) in the premiums receivable on financial guarantee insurance contracts from adjustments classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (c)(4)(iv) -URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290 + Details
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X
- Definition Amount of financing receivable 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922355-210448 + Details
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X
- Definition Amount of expense (reversal of expense) for expected credit loss on premium receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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X
- Definition The carrying value as of the balance sheet date of the estimated valuation allowance to reduce gross premiums receivable to net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
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- Definition Amount of increase (decrease) in allowance for credit loss on premium receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of increase in allowance for credit loss on premium receivable from recovery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Amount of writeoff of premium receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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X
- Definition The carrying amount as of the balance sheet date due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, net of the allowance for doubtful accounts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),5) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition Gross amount, as of the balance sheet date, due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, before deducting the allowance for doubtful accounts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.5) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. 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