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Insurance In Force (Summary Of Company's Reinsurance Agreements For U.S. Public Finance And Structured Finance And International Insurance Operations) (Detail) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Ceded Par Outstanding |  | $ 1,761 | $ 2,200
Letters of Credit/Trust Accounts |  | 32 |
Assured Guaranty Corp [Member] |  |  |
Ceded Par Outstanding |  | 756 |
Reinsurance Recoverable | [1] | (4) |
Assured Guaranty Re Ltd [Member] |  |  |
Ceded Par Outstanding |  | 725 |
Letters of Credit/Trust Accounts |  | 29 |
Reinsurance Recoverable | [1] | 4 |
Overseas Private Investment Corporation [Member] |  |  |
Ceded Par Outstanding |  | 220 |
Others [Member] |  |  |
Ceded Par Outstanding |  | 60 |
Letters of Credit/Trust Accounts |  | $ 3 |
[1] | Total reinsurance recoverable is primarily related to recoverables on unpaid losses.

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- Definition Reinsurance Recoverables Secured By Letters Of Credit Or Trust Amount. + References No definition available. + Details
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- Definition Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + 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),6) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=99397103&loc=d3e6824-158387 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=99404803&loc=d3e21409-158489 + Details
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