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Insurance In Force (Schedule Of Insurance In Force By Type Of Bond, Excluding Transactions Guaranteed By MBIA Corp. On Behalf Of Various Investment Management Services And Other Affiliated Companies) (Detail) - USD ($) $ in Billions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Insurance in Force |  | $ 60.9 | $ 68.0
Gross Par Amount |  | 31.2 | 35.1
U S [Member] |  |  |
Insurance in Force |  | 58.4 | 65.1
Non-United States [Member] |  |  |
Insurance in Force |  | 2.5 | 2.9
Transportation [Member] | Non-United States [Member] |  |  |
Insurance in Force |  | 0.4 | 0.5
Gross Par Amount |  | 0.4 | 0.4
Other Public Finance [Member] | Non-United States [Member] |  |  |
Insurance in Force | [1] | 0.1 | 0.1
Gross Par Amount | [1] | 0.1 | 0.1
Sovereign Related And Sub-Sovereign [Member] | Non-United States [Member] |  |  |
Insurance in Force | [2] | 1.3 | 1.5
Gross Par Amount | [2] | 1.0 | 1.2
Global Public Finance [Member] |  |  |
Insurance in Force |  | 58.9 | 65.5
Gross Par Amount |  | 29.8 | 33.4
Global Public Finance [Member] | U S [Member] |  |  |
Insurance in Force |  | 57.1 | 63.4
Gross Par Amount |  | 28.3 | 31.7
Global Public Finance [Member] | Non-United States [Member] |  |  |
Insurance in Force |  | 1.8 | 2.1
Gross Par Amount |  | 1.5 | 1.7
Global Public Finance [Member] | General Obligation [Member] | U S [Member] |  |  |
Insurance in Force | [3] | 16.8 | 19.1
Gross Par Amount | [3] | 8.0 | 9.1
Global Public Finance [Member] | General Obligation—Lease [Member] | U S [Member] |  |  |
Insurance in Force |  | 1.0 | 1.3
Gross Par Amount |  | 0.7 | 1.0
Global Public Finance [Member] | Municipal Utilities [Member] | U S [Member] |  |  |
Insurance in Force |  | 6.4 | 7.6
Gross Par Amount |  | 4.6 | 5.2
Global Public Finance [Member] | Tax-Backed [Member] | U S [Member] |  |  |
Insurance in Force |  | 11.0 | 12.2
Gross Par Amount |  | 4.9 | 5.6
Global Public Finance [Member] | Transportation [Member] | U S [Member] |  |  |
Insurance in Force |  | 6.5 | 6.9
Gross Par Amount |  | 2.1 | 2.2
Global Public Finance [Member] | Higher Education [Member] | U S [Member] |  |  |
Insurance in Force |  | 1.0 | 1.1
Gross Par Amount |  | 0.7 | 0.8
Global Public Finance [Member] | Health Care [Member] | U S [Member] |  |  |
Insurance in Force |  | 0.7 | 0.8
Gross Par Amount |  | 0.4 | 0.6
Global Public Finance [Member] | Military Housing [Member] | U S [Member] |  |  |
Insurance in Force |  | 13.2 | 13.8
Gross Par Amount |  | 6.6 | 6.8
Global Public Finance [Member] | Investor-Owned Utilities [Member] | U S [Member] |  |  |
Insurance in Force | [4] | 0.4 | 0.5
Gross Par Amount | [4] | 0.3 | 0.3
Global Public Finance [Member] | Other Public Finance [Member] | U S [Member] |  |  |
Insurance in Force | [5] | 0.1 | 0.1
Gross Par Amount | [5] | 0.0 | 0.1
Global Structured Finance [Member] |  |  |
Insurance in Force |  | 2.0 | 2.5
Gross Par Amount |  | 1.4 | 1.7
Global Structured Finance [Member] | Collateralized Debt Obligations [Member] |  |  |
Insurance in Force |  | 0.1 | 0.2
Gross Par Amount |  | 0.1 | 0.2
Global Structured Finance [Member] | Residential Mortgage Backed Securities [Member] |  |  |
Insurance in Force |  | 0.9 | 1.2
Gross Par Amount |  | 0.6 | 0.8
Global Structured Finance [Member] | Commercial Mortgage-Backed [Member] |  |  |
Insurance in Force |  | 0.4 | 0.4
Gross Par Amount |  | 0.2 | 0.2
Global Structured Finance [Member] | Consumer Asset Backed [Member] |  |  |
Insurance in Force |  | 0.1 | 0.2
Gross Par Amount |  | 0.1 | 0.1
Global Structured Finance [Member] | Corporate Asset Backed [Member] |  |  |
Insurance in Force |  | 0.5 | 0.5
Gross Par Amount |  | $ 0.4 | $ 0.4
[1] | Includes municipal owned entities backed by sponsoring local government, tax backed and utility transactions.
[2] | Includes regions, departments or their equivalent in each jurisdiction as well as sovereign owned entities that are supported by a sovereign state, region or department.
[3] | Includes general obligation unlimited and limited (property) tax bonds, general fund obligation bonds and pension obligation bonds of states, cities, counties, schools and special districts
[4] | Includes investor owned utilities, industrial development and pollution control revenue bonds.
[5] | Includes stadium related financings, municipal housing and certain non-profit enterprises.

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