Available-For-Sale Securities, Debt Securities, Including Loaned Securities

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- Definition

Available-For-Sale Securities, Debt Securities, Including Loaned Securities, Percentage Outstanding

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No definition available.

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- Definition

Ceded Insurance Commission Percentage

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- Definition

Ceded Premiums Earned, Cost Of Tender Premiums, Recovery Period

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- Definition

Ceded Premiums Saved

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- Definition

Reinsurance Agreement, Aggregate Excess-of-Loss Coverage

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- Definition

Reinsurance Agreement, Monthly Premium Increase Rate

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- Definition

Reinsurance Agreement, Optional Right, Percent Of Reinsurance Coverage Threshold

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- Definition

Reinsurance Agreement, Right To Terminate, Option Call Date, Period After Issuance Of Insurance-Linked Notes

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No definition available.

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- Definition

Reinsurance Retention Policy, Term Of Coverage, Period

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No definition available.

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- Definition

Risk In Force, Ceded Amount

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 825
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479383/944-825-50-1B

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- Definition

Amount of earned premiums ceded to other entities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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- Definition

Amount of the reinsurer's funds held on its behalf by the ceding insurer, including funds held in trust, under reinsurance treaties or contracts with the assuming insurer as security for the payment of the obligations thereunder.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(10))
-Publisher FASB
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- Definition

Ratio of non-life losses and loss expenses to non-life net premiums earned.

+ References

No definition available.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
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-Subparagraph (b)
-Publisher FASB
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Reinsurance - Narrative (Details) $ in Thousands			1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
Reinsurance - Narrative (Details) $ in Thousands	Jul. 01, 2023 USD ($)	Jul. 01, 2022	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2028	Dec. 31, 2022 USD ($)	Feb. 29, 2020 USD ($)	Apr. 30, 2019 USD ($)
Ceded Credit Risk [Line Items]
Mortgage-linked insurance notes tendered				$ 5,116,509			$ 5,116,509
Ceded premiums earned				21,506		$ 22,999	92,568	$ 49,192
Mortgage insurance-linked notes \| Fixed-maturities available for sale
Ceded Credit Risk [Line Items]
Mortgage-linked insurance notes tendered				50,682			50,682				$ 53,019
Mortgage
Ceded Credit Risk [Line Items]
RIF ceded				69,300,000			69,300,000				66,100,000
Ceded premiums earned				21,406		$ 22,859	92,268	$ 48,772
Radian Guaranty
Ceded Credit Risk [Line Items]
Funds held under reinsurance agreements, asset				200,000			200,000				175,000
Radian Guaranty \| Eagle Re 2019-1 Ltd. \| Mortgage insurance-linked notes \| Fixed-maturities available for sale
Ceded Credit Risk [Line Items]
Mortgage-linked insurance notes tendered					$ 455,000
Mortgage-linked insurance notes tendered (as a percent)					100.00%
Radian Guaranty \| Eagle Re 2020-1 Ltd. \| Mortgage insurance-linked notes \| Fixed-maturities available for sale
Ceded Credit Risk [Line Items]
Mortgage-linked insurance notes tendered					$ 332,000
Mortgage-linked insurance notes tendered (as a percent)					82.00%
Radian Guaranty \| Eagle Re 2019-1 Ltd. and Eagle Re 2020-1 Ltd.
Ceded Credit Risk [Line Items]
Ceded premiums earned							$ 21,000
One-time costs recovery period							1 year
Radian Guaranty \| Eagle Re 2019-1 Ltd. and Eagle Re 2020-1 Ltd. \| Forecast
Ceded Credit Risk [Line Items]
Ceded premiums saved									$ 58,000
Radian Guaranty \| Eagle Re 2019-1 Ltd. and Eagle Re 2020-1 Ltd. \| Tender Premiums
Ceded Credit Risk [Line Items]
Ceded premiums earned					$ 16,000
Radian Guaranty \| Eagle Re 2019-1 Ltd. and Eagle Re 2020-1 Ltd. \| Deferred Costs
Ceded Credit Risk [Line Items]
Ceded premiums earned					$ 5,000
Radian Guaranty \| Maximum \| Mortgage
Ceded Credit Risk [Line Items]
Reinsurance retention policy, term of coverage, period							12 years 6 months
Radian Guaranty \| Minimum \| Mortgage
Ceded Credit Risk [Line Items]
Reinsurance retention policy, term of coverage, period							10 years
2023 QSR Agreement \| Maximum
Ceded Credit Risk [Line Items]
RIF ceded	$ 3,000,000
2023 QSR Agreement \| Radian Guaranty
Ceded Credit Risk [Line Items]
Ceding commission %	20.00%
2023 QSR Agreement \| Radian Guaranty \| Revenue Benchmark \| Product Concentration Risk
Ceded Credit Risk [Line Items]
Quota share %	22.50%
2023 QSR Agreement \| Radian Guaranty \| Maximum
Ceded Credit Risk [Line Items]
Profit commission %	55.00%
Excess-of-Loss Program \| Radian Guaranty
Ceded Credit Risk [Line Items]
Percent of reinsurance coverage threshold (in percent)							0.10
Excess-of-Loss Program \| Radian Guaranty \| Mortgage \| Eagle Re 2019-1 Ltd.
Ceded Credit Risk [Line Items]
RIF ceded				0			$ 0				1,769,000		$ 10,705,000
Excess-of-Loss Program \| Radian Guaranty \| Mortgage \| Eagle Re 2020-1 Ltd.
Ceded Credit Risk [Line Items]
RIF ceded				2,113,000			$ 2,113,000				$ 2,401,000	$ 9,866,000
Excess-of-Loss Program \| Radian Guaranty \| Mortgage \| Eagle Re 2023-1 Ltd. \| Subsequent Event
Ceded Credit Risk [Line Items]
RIF ceded			$ 8,800,000
Aggregate excess-of-loss coverage (up to)			353,000
Excess-of-Loss Program \| Radian Guaranty \| Mortgage \| 2023 XOL Agreement \| Subsequent Event
Ceded Credit Risk [Line Items]
RIF ceded			8,000,000
Aggregate excess-of-loss coverage (up to)			246,000
Excess-of-Loss Program \| Radian Guaranty \| Mortgage \| 2023 XOL Agreement \| Forecast
Ceded Credit Risk [Line Items]
Increase to monthly premium if agreement is not terminated (as a percent)										1.5
Excess-of-Loss Program \| Radian Guaranty \| Maximum
Ceded Credit Risk [Line Items]
Right to termination on or after option call date, period after issuance of insurance-linked notes							7 years
Excess-of-Loss Program \| Radian Guaranty \| Minimum
Ceded Credit Risk [Line Items]
Right to termination on or after option call date, period after issuance of insurance-linked notes							5 years
Excess-of-Loss Program \| Eagle Re 2023-1 Ltd. \| Mortgage \| Eagle Re 2023-1 Ltd. \| Subsequent Event \| Mortgage insurance-linked notes
Ceded Credit Risk [Line Items]
Proceeds from issuance of debt			$ 353,000
2022 QSR Agreement \| Maximum
Ceded Credit Risk [Line Items]
RIF ceded				$ 8,500,000			$ 8,500,000
2022 QSR Agreement \| Radian Guaranty
Ceded Credit Risk [Line Items]
Ceding commission %		20.00%
2022 QSR Agreement \| Radian Guaranty \| Revenue Benchmark \| Product Concentration Risk
Ceded Credit Risk [Line Items]
Quota share %		20.00%
2022 QSR Agreement \| Radian Guaranty \| Maximum
Ceded Credit Risk [Line Items]
Profit commission %		59.00%