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Reinsurance - QSR Program (Parenthetical) (Details) - Radian Guaranty | 1 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2025 | Sep. 30, 2025
Ceded Credit Risk [Line Items] |  |  |
Effective period after NIW policy end date |  |  | 10 years
2026 QSR Agreement |  |  |
Ceded Credit Risk [Line Items] |  |  |
NIW policy dates |  | July 1, 2026, to June 30, 2027 |
2026 QSR Agreement | Revenue Benchmark | Product Concentration Risk |  |  |
Ceded Credit Risk [Line Items] |  |  |
Cession percentage |  | 30.00% |
2027 QSR Agreement |  |  |
Ceded Credit Risk [Line Items] |  |  |
NIW policy dates |  | July 1, 2027, to June 30, 2028 |
2027 QSR Agreement | Revenue Benchmark | Product Concentration Risk |  |  |
Ceded Credit Risk [Line Items] |  |  |
Cession percentage |  | 15.00% |
2016 Single Premium QSR Agreement |  |  |
Ceded Credit Risk [Line Items] |  |  |
NIW policy dates | [1],[2],[3] |  | Jan 1, 2012-Dec 31, 2017
Effective date |  |  | Jan. 01, 2016
2022 QSR Agreement |  |  |
Ceded Credit Risk [Line Items] |  |  |
NIW policy dates | [1],[2],[3] |  | Jan 1, 2022-Jun 30, 2023
Effective date |  |  | Jul. 01, 2022
2022 QSR Agreement | Revenue Benchmark | Product Concentration Risk |  |  |
Ceded Credit Risk [Line Items] |  |  |
Cession percentage | [1] |  | 20.00%
[1] | Excludes the 2012 QSR Agreements, for which RIF ceded is no longer material, a nd the 2026 and 2027 QSR Agreements that were entered into in July 2025, b ut are effective for future NIW vintages from July 1, 2026, to June 30, 2027, and July 1, 2027, to June 30, 2028, respectively, with cessions of 30% and 15%, respectively.
[2] | Radian Guaranty has the option, based on certain conditions and subject to a termination fee, to terminate any of the agreements at the end of any calendar quarter on or after the applicable optional termination date. If Radian Guaranty exercises this option in the future, it would result in Radian Guaranty reassuming the related RIF in exchange for a net payment to the reinsurers calculated in accordance with the terms of the applicable agreement. Radian Guaranty also may terminate any of the agreements prior to the scheduled termination date under certain circumstances, including if one or both of the GSEs no longer grant full PMIERs credit for the reinsurance. The scheduled termination date is 10 years after the ending NIW policy date.
[3] | The effective date for each agreement is the same as the beginning NIW policy date, except for the following: the 2016 Single Premium QSR Agreement, which has an effective date of January 1, 2016, and the 2022 QSR Agreement, which has an effective date of July 1, 2022.

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