XML 53 R33.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Financial Guarantees in Force (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Guarantees [Abstract] |
Schedule of Financial Guarantee Insurance In Force By Bond Type | As of December 31, 2021 and 2020, the financial guarantee portfolio consisted of the types of guaranteed bonds as shown in the following table:
Net Par Outstanding December 31, (1) | 2021 |  | 2020
Public Finance: |  |  |
Housing revenue (2) | $ | 5,610 |  |  | $ | 5,855 |
Lease and tax-backed revenue | 3,196 |  |  | 4,179 |
General obligation | 1,612 |  |  | 2,345 |
Other | 1,942 |  |  | 3,118 |
Total Public Finance | 12,360 |  |  | 15,497 |
Structured Finance: |  |  |
Mortgage-backed and home equity | 2,724 |  |  | 3,635 |
Investor-owned utilities | 1,556 |  |  | 1,617 |
Other | 624 |  |  | 1,085 |
Total Structured Finance | 4,904 |  |  | 6,337 |
International Finance: |  |  |
Sovereign/sub-sovereign | 5,141 |  |  | 5,270 |
Investor-owned and public utilities | 3,283 |  |  | 3,899 |
Asset-backed and other | 1,276 |  |  | 1,374 |
Transportation | 1,056 |  |  | 1,511 |
Total International Finance | 10,756 |  |  | 12,054 |
Total | $ | 28,020 |  |  | $ | 33,888 |
(1)Net Par Outstanding includes capital appreciation bonds, which are reported at the par amount at the time of issuance of the insurance policy as opposed to the current accreted value of the bond. (2)Includes $5,490 and $5,575 of Military Housing net par at December 31, 2021 and 2020, respectively.
Schedule of International Financial Guarantee Insurance In Force Portfolio By Location Of Risk | As of December 31, 2021 and 2020, the financial guaranteed portfolio by location of risk was as outlined in the table below:
Net Par Outstanding December 31, | 2021 |  | 2020
United States | $ | 17,264 |  |  | $ | 21,834 |
United Kingdom | 9,255 |  |  | 9,711 |
Italy | 718 |  |  | 803 |
Austria | 343 |  |  | 707 |
France | 219 |  |  | 277 |
Australia | 203 |  |  | 420 |
Other international | 18 |  |  | 136 |
Total | $ | 28,020 |  |  | $ | 33,888 |

X
- Definition Schedule of Financial Guarantees Net Par Amount Outstanding by guaranteed bond type. Table Text Block] + References No definition available. + Details
Name: | ambc_ScheduleofFinancialGuaranteeInsuranceInForceByBondTypeTableTextBlock
Namespace Prefix: | ambc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of International Financial Guarantees Net Par Amount Outstanding By Location Of Risk [Table Text Block] + References No definition available. + Details
Name: | ambc_ScheduleofInternationalFinancialGuaranteeInsuranceInForcePortfolioByLocationOfRiskTableTextBlock
Namespace Prefix: | ambc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GuaranteesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration