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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 |  |
--- | --- | --- | ---
Mar. 31, 2022 USD ($) | Mar. 31, 2022 GBP (£) | Mar. 31, 2022 EUR (€) | Mar. 31, 2021 USD ($) | Mar. 31, 2021 GBP (£) | Mar. 31, 2021 EUR (€) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Insurance [Line Items] |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts, Premiums and Other Receivables | $ 8,000 |  |  | $ 13,000 |  |  | $ 9,000 | $ 17,000
Financial Guarantee Insurance Contracts, Accelerated Premium Revenue, Amount | 0 |  |  | 0 |  |  |  |
Past Due Premiums Receivable | 19 |  |  |  |  |  | 0 |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Beginning premium receivable | 320,000 |  |  | 370,000 |  |  |  |
Premium receipts | 15,000 |  |  | 12,000 |  |  |  |
Adjustments for changes in expected and contractual cash flows | 3,000 |  |  | (8,000) |  |  |  |
Accretion of premium receivable discount | 2,000 |  |  | 2,000 |  |  |  |
Uncollectable premiums | 1,000 |  |  | 4,000 |  |  |  |
Other adjustments (including foreign exchange) | (3,000) |  |  | 0 |  |  |  |
Ending premium receivable | 308,000 |  |  | 356,000 |  |  |  |
Premium Receivable, Allowance for Credit Loss | 8,000 |  |  |  |  |  | 9,000 |
Premium Receivable, Credit Loss Expense (Reversal) | (1,000) |  |  | (4,000) |  |  |  |
Premium Receivable, Allowance for Credit Loss, Writeoff | 0 |  |  | 0 |  |  |  |
Premium Receivable, Allowance for Credit Loss, Recovery | 0 |  |  | 0 |  |  |  |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 14 |  |  |  |  |  | 0 |
Premiums Receivable, Gross | 316,000 |  |  |  |  |  | 329,000 |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 974,000 |  |  | 1,123,000 |  |  | 1,098,000 | $ 1,140,000
Premiums Receivable, Net | 317,000 |  |  |  |  |  | 323,000 |
Specialty Property & Casualty Program |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 9,000 |  |  |  |  |  | 2,000 |
Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 157,000 |  |  |  |  |  | 159,000 |
Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 41,000 |  |  |  |  |  | 45,000 |
International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 118,000 |  |  |  |  |  | 125,000 |
I/SL [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 267,000 |  |  |  |  |  | 277,000 |
I/SL [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 149,000 |  |  |  |  |  | 151,000 |
I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 18,000 |  |  |  |  |  | 19,000 |
I/SL [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 100,000 |  |  |  |  |  | 107,000 |
IA [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 12,000 |  |  |  |  |  | 12,000 |
IA [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 3,000 |  |  |  |  |  | 3,000 |
IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 1,000 |  |  |  |  |  | 1,000 |
IA [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 8,000 |  |  |  |  |  | 8,000 |
II [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 6,000 |
II [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 5,000 |  |  |  |  |  | 5,000 |
II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 1,000 |
II [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
III [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 21,000 |  |  |  |  |  | 22,000 |
III [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 11,000 |  |  |  |  |  | 12,000 |
III [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 10,000 |  |  |  |  |  | 11,000 |
IV [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 11,000 |  |  |  |  |  | 12,000 |
IV [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 11,000 |  |  |  |  |  | 12,000 |
IV [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
United Kingdom, Pounds |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Ending premium receivable | 101,000 | £ 77 |  | 122,000 | £ 89 |  |  |
Euro Member Countries, Euro |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Ending premium receivable | 16,000 |  | € 15 | $ 21,000 |  | € 18 |  |
Other Public Finance Sectors [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Other Public Finance Sectors [Member] | IA [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Other Public Finance Sectors [Member] | III [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Other International [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Other International [Member] | IA [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Other International [Member] | II [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Other International [Member] | III [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Other International [Member] | IV [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Mortgage Backed And Home Equity [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 15,000 |  |  |  |  |  | 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 | 1,000 |  |  |  |  |  | 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 |
Mortgage Backed And Home Equity [Member] | II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 | 2,000 |  |  |  |  |  | 2,000 |
Mortgage Backed And Home Equity [Member] | IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 11,000 |  |  |  |  |  | 12,000 |
Structured Insurance [Domain] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 9,000 |  |  |  |  |  | 10,000 |
Structured Insurance [Domain] | I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 9,000 |  |  |  |  |  | 10,000 |
Structured Insurance [Domain] | IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Structured Insurance [Domain] | II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Structured Insurance [Domain] | III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Structured Insurance [Domain] | IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Student Loans [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 11,000 |  |  |  |  |  | 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 |
Student Loans [Member] | IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Student Loans [Member] | III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Other Structured Finance [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 6,000 |  |  |  |  |  | 7,000 |
Other Structured Finance [Member] | I/SL [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 6,000 |  |  |  |  |  | 7,000 |
Other Structured Finance [Member] | IA [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Other Structured Finance [Member] | II [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Other Structured Finance [Member] | III [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Other Structured Finance [Member] | IV [Member] | Structured Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Sovereign And Sub Sovereign [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 92,000 |  |  |  |  |  | 93,000 |
Sovereign And Sub Sovereign [Member] | I/SL [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 74,000 |  |  |  |  |  | 74,000 |
Sovereign And Sub Sovereign [Member] | IA [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 8,000 |  |  |  |  |  | 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 |
Sovereign And Sub Sovereign [Member] | III [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 10,000 |  |  |  |  |  | 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 |
Investor Owned And Public Utilities [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 21,000 |  |  |  |  |  | 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 | 21,000 |  |  |  |  |  | 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 |
Investor Owned And Public Utilities [Member] | II [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Investor Owned And Public Utilities [Member] | IV [Member] | International Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 0 |  |  |  |  |  | 0 |
Housing Revenue [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 155,000 |  |  |  |  |  | 157,000 |
Housing Revenue [Member] | I/SL [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 147,000 |  |  |  |  |  | 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 |
Housing Revenue [Member] | II [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | 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 |
Housing Revenue [Member] | IV [Member] | Public Finance [Member] |  |  |  |  |  |  |  |
Financial Guarantee Insurance Contracts, Premium Receivable [Roll Forward] |  |  |  |  |  |  |  |
Premiums Receivable, Gross | $ 0 |  |  |  |  |  | $ 0 |

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- Definition Insurance [Line Items] + References No definition available. + Details
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