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Reinsurance - Excess-of-Loss Program (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 30, 2021 | Apr. 30, 2021 | Feb. 29, 2020 | Apr. 30, 2019 | Nov. 30, 2018 | Mar. 31, 2023 | Dec. 31, 2022
Mortgage |  |  |  |  |  |  |
RIF |  |  |  |  |  | $ 66,600.0 | $ 66,100.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2021-2 Ltd. | Mortgage |  |  |  |  |  |  |
RIF | $ 10,758.0 |  |  |  |  | 8,853.0 | 9,150.0
Initial and remaining coverage | 484.0 |  |  |  |  | 449.0 | 472.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2021-2 Ltd. | First layer retention | Mortgage |  |  |  |  |  |  |
First layer retention | $ 242.0 |  |  |  |  | 242.0 | 242.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2021-1 Ltd. | Mortgage |  |  |  |  |  |  |
RIF |  | $ 11,061.0 |  |  |  | 7,322.0 | 7,758.0
Initial and remaining coverage |  | 498.0 |  |  |  | 333.0 | 366.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2021-1 Ltd. | Radian Group Inc. |  |  |  |  |  |  |
Proceeds from issuance of debt |  |  |  |  |  | 45.4 |
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2021-1 Ltd. | First layer retention | Mortgage |  |  |  |  |  |  |
First layer retention |  | $ 221.0 |  |  |  | 221.0 | 221.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2020-1 Ltd. | Mortgage |  |  |  |  |  |  |
RIF |  |  | $ 9,866.0 |  |  | 2,310.0 | 2,401.0
Initial and remaining coverage |  |  | 488.0 |  |  | 347.0 | 368.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2020-1 Ltd. | Radian Group Inc. |  |  |  |  |  |  |
Proceeds from issuance of debt |  |  |  |  |  | 4.4 |
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2020-1 Ltd. | First layer retention | Mortgage |  |  |  |  |  |  |
First layer retention |  |  | $ 202.0 |  |  | 202.0 | 202.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2019-1 Ltd. | Mortgage |  |  |  |  |  |  |
RIF |  |  |  | $ 10,705.0 |  | 1,694.0 | 1,769.0
Initial and remaining coverage |  |  |  | 562.0 |  | 385.0 | 385.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2019-1 Ltd. | Radian Group Inc. |  |  |  |  |  |  |
Proceeds from issuance of debt |  |  |  |  |  | 7.6 |
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2019-1 Ltd. | First layer retention | Mortgage |  |  |  |  |  |  |
First layer retention |  |  |  | $ 268.0 |  | 263.0 | 263.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2018-1 Ltd. | Mortgage |  |  |  |  |  |  |
RIF |  |  |  |  | $ 9,109.0 | 1,430.0 | 1,509.0
Initial and remaining coverage |  |  |  |  | 434.0 | 276.0 | 276.0
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2018-1 Ltd. | Radian Group Inc. |  |  |  |  |  |  |
Proceeds from issuance of debt |  |  |  |  |  | 3.1 |
Excess-of-Loss Program | Radian Guaranty | Eagle Re 2018-1 Ltd. | First layer retention | Mortgage |  |  |  |  |  |  |
First layer retention |  |  |  |  | $ 205.0 | $ 200.0 | $ 200.0

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