Financial Guarantee Insurance Contracts - Summarized Future Gross Undiscounted Premiums Expected to be Collected, and Future Expected Premiums Earned, Net of Reinsurance (Detail) $ in Millions	Jun. 30, 2020 USD ($)
Future premiums expected to be collected, September 30, 2020	$ 12
Future premiums expected to be collected, December 31, 2020	10
Future premiums expected to be collected, December 31, 2021	36
Future premiums expected to be collected, December 31, 2022	35
Future premiums expected to be collected, December 31, 2023	33
Future premiums expected to be collected, December 31, 2024	32
Future premiums expected to be collected, December 31, 2029	140
Future premiums expected to be collected, December 31, 2034	104
Future premiums expected to be collected, December 31, 2039	52
Future premiums expected to be collected, December 31, 2044	23
Future premiums expected to be collected, December 31, 2049	9
Future premiums expected to be collected, December 31, 2054	1
Future premiums expected to be collected, Total	488
Future expected premiums to be earned, net of reinsurance, September 30, 2020	10
Future expected premiums to be earned, net of reinsurance, December 31, 2020	10
Future expected premiums to be earned, net of reinsurance, December 31, 2021	36
Future expected premiums to be earned, net of reinsurance, December 31, 2022	34
Future expected premiums to be earned, net of reinsurance, December 31, 2023	32
Future expected premiums to be earned, net of reinsurance, December 31, 2024	30
Future expected premiums to be earned, net of reinsurance, December 31, 2029	124
Future expected premiums to be earned, net of reinsurance, December 31, 2034	82
Future expected premiums to be earned, net of reinsurance, December 31, 2039	38
Future expected premiums to be earned, net of reinsurance, December 31, 2044	14
Future expected premiums to be earned, net of reinsurance, December 31, 2049	5
Future expected premiums to be earned, net of reinsurance, December 31, 2054	1
Future expected premiums to be earned, net of reinsurance, Total	$ 416

Amount of unearned premium revenue under contracts issued by an insurance entity that provide protection to the holder of a financial obligation from a financial loss in the event of a default.

No definition available.

+ Details

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- Definition

Amount of premium revenue under financial guarantee insurance contracts expected to be recognized in the fourth fiscal quarter following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ 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 (b)(1)
-URI http://asc.fasb.org/extlink&oid=6933581&loc=SL5749298-161291

+ Details

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- Definition

Amount of premium revenue under financial guarantee insurance contracts expected to be recognized in the third fiscal quarter following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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- Definition

Amount of premium revenue under financial guarantee insurance contracts expected to be recognized in the eleventh through fifteenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References