Insurance Company Regulatory Requirements - Dividends and Surplus Notes By Insurance Company Subsidiaries (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statutory Accounting Practices [Line Items]
Dividends paid	$ 64	$ 66	$ 69
AGC \| AGC \| Affiliated Entity
Statutory Accounting Practices [Line Items]
Dividends paid	207	94	166
Assured Guaranty Municipal Corp \| AGMH \| Affiliated Entity
Statutory Accounting Practices [Line Items]
Dividends paid	266	291	267
Assured Guaranty Municipal Corp \| AGE \| Affiliated Entity
Statutory Accounting Practices [Line Items]
Contributions	0	0	(123)
AG Re \| Assured Guaranty LTD \| Fixed-maturity securities
Statutory Accounting Practices [Line Items]
Dividend from a subsidiary in the form of fixed-maturity securities	0	46	47
AG Re \| Assured Guaranty LTD \| Affiliated Entity
Statutory Accounting Practices [Line Items]
Dividends paid	0	150	150
AGUK \| Assured Guaranty Municipal Corp \| Affiliated Entity
Statutory Accounting Practices [Line Items]
Dividends paid	$ 0	$ 0	$ 124

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

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- Definition

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+ References

+ Details

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- Definition

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+ References

No definition available.

+ Details

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