Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000890926-22-000041-index-headers.html | 2022-11-04 16:17:07 | |
| 0000890926-22-000041-index.html | 2022-11-04 16:17:07 | |
| 0000890926-22-000041.txt | 2022-11-04 16:17:07 | |
 0000890926-22-000041-xbrl.zip | 542912 | 2022-11-04 16:17:07 |
| FilingSummary.xml | 45587 | 2022-11-04 16:17:07 |
| Financial_Report.xlsx | 140291 | 2022-11-04 16:17:07 |
| MetaLinks.json | 828190 | 2022-11-04 16:17:07 |
| R1.htm | 53098 | 2022-11-04 16:17:07 |
| R10.htm | 12857 | 2022-11-04 16:17:07 |
| R11.htm | 25276 | 2022-11-04 16:17:07 |
| R12.htm | 99436 | 2022-11-04 16:17:07 |
| R13.htm | 179414 | 2022-11-04 16:17:07 |
| R14.htm | 223537 | 2022-11-04 16:17:07 |
| R15.htm | 24594 | 2022-11-04 16:17:07 |
| R16.htm | 155088 | 2022-11-04 16:17:07 |
| R17.htm | 15303 | 2022-11-04 16:17:07 |
| R18.htm | 11329 | 2022-11-04 16:17:07 |
| R19.htm | 37421 | 2022-11-04 16:17:07 |
| R2.htm | 103720 | 2022-11-04 16:17:07 |
| R20.htm | 33628 | 2022-11-04 16:17:07 |
| R21.htm | 8308 | 2022-11-04 16:17:07 |
| R22.htm | 34990 | 2022-11-04 16:17:07 |
| R23.htm | 67333 | 2022-11-04 16:17:07 |
| R24.htm | 22782 | 2022-11-04 16:17:07 |
| R25.htm | 38508 | 2022-11-04 16:17:07 |
| R26.htm | 24193 | 2022-11-04 16:17:07 |
| R27.htm | 94073 | 2022-11-04 16:17:07 |
| R28.htm | 178627 | 2022-11-04 16:17:07 |
| R29.htm | 224233 | 2022-11-04 16:17:07 |
| R3.htm | 21990 | 2022-11-04 16:17:07 |
| R30.htm | 24108 | 2022-11-04 16:17:07 |
| R31.htm | 144101 | 2022-11-04 16:17:07 |
| R32.htm | 15001 | 2022-11-04 16:17:07 |
| R33.htm | 35891 | 2022-11-04 16:17:07 |
| R34.htm | 21319 | 2022-11-04 16:17:07 |
| R35.htm | 25778 | 2022-11-04 16:17:07 |
| R36.htm | 66775 | 2022-11-04 16:17:07 |
| R37.htm | 20387 | 2022-11-04 16:17:07 |
| R38.htm | 15566 | 2022-11-04 16:17:07 |
| R39.htm | 35488 | 2022-11-04 16:17:07 |
| R4.htm | 82414 | 2022-11-04 16:17:07 |
| R40.htm | 9145 | 2022-11-04 16:17:07 |
| R41.htm | 38758 | 2022-11-04 16:17:07 |
| R42.htm | 27034 | 2022-11-04 16:17:07 |
| R43.htm | 24567 | 2022-11-04 16:17:07 |
| R44.htm | 188816 | 2022-11-04 16:17:07 |
| R45.htm | 9123 | 2022-11-04 16:17:07 |
| R46.htm | 15236 | 2022-11-04 16:17:07 |
| R47.htm | 58064 | 2022-11-04 16:17:07 |
| R48.htm | 5416 | 2022-11-04 16:17:07 |
| R49.htm | 12091 | 2022-11-04 16:17:07 |
| R5.htm | 4710 | 2022-11-04 16:17:07 |
| R50.htm | 73038 | 2022-11-04 16:17:07 |
| R51.htm | 10039 | 2022-11-04 16:17:07 |
| R52.htm | 33474 | 2022-11-04 16:17:07 |
| R53.htm | 60297 | 2022-11-04 16:17:07 |
| R54.htm | 6987 | 2022-11-04 16:17:07 |
| R55.htm | 7452 | 2022-11-04 16:17:07 |
| R56.htm | 18691 | 2022-11-04 16:17:07 |
| R57.htm | 36292 | 2022-11-04 16:17:07 |
| R58.htm | 35428 | 2022-11-04 16:17:07 |
| R59.htm | 26381 | 2022-11-04 16:17:07 |
| R6.htm | 40072 | 2022-11-04 16:17:07 |
| R60.htm | 33347 | 2022-11-04 16:17:07 |
| R61.htm | 38801 | 2022-11-04 16:17:07 |
| R62.htm | 15019 | 2022-11-04 16:17:07 |
| R63.htm | 12519 | 2022-11-04 16:17:07 |
| R64.htm | 17049 | 2022-11-04 16:17:07 |
| R65.htm | 32707 | 2022-11-04 16:17:07 |
| R66.htm | 9707 | 2022-11-04 16:17:07 |
| R67.htm | 36069 | 2022-11-04 16:17:07 |
| R68.htm | 45326 | 2022-11-04 16:17:07 |
| R69.htm | 11562 | 2022-11-04 16:17:07 |
| R7.htm | 59231 | 2022-11-04 16:17:07 |
| R70.htm | 43880 | 2022-11-04 16:17:07 |
| R71.htm | 34444 | 2022-11-04 16:17:07 |
| R72.htm | 75185 | 2022-11-04 16:17:07 |
| R73.htm | 16325 | 2022-11-04 16:17:07 |
| R74.htm | 25301 | 2022-11-04 16:17:07 |
| R8.htm | 55202 | 2022-11-04 16:17:07 |
| R9.htm | 14047 | 2022-11-04 16:17:07 |
| rdn-20220930.htm | 3591530 | 2022-11-04 16:17:07 |
| rdn-20220930.xsd | 67216 | 2022-11-04 16:17:07 |
| rdn-20220930_cal.xml | 95321 | 2022-11-04 16:17:07 |
| rdn-20220930_def.xml | 421726 | 2022-11-04 16:17:07 |
 rdn-20220930_g1.jpg | 72932 | 2022-11-04 16:17:07 |
 rdn-20220930_g2.jpg | 42886 | 2022-11-04 16:17:07 |
| rdn-20220930_htm.xml | 3221401 | 2022-11-04 16:17:07 |
| rdn-20220930_lab.xml | 793548 | 2022-11-04 16:17:07 |
| rdn-20220930_pre.xml | 573535 | 2022-11-04 16:17:07 |
| rdn-ex101_20220930.htm | 62018 | 2022-11-04 16:17:07 |
| rdn-ex31_20220930.htm | 17763 | 2022-11-04 16:17:07 |
| rdn-ex32_20220930.htm | 6204 | 2022-11-04 16:17:07 |
| report.css | 2767 | 2022-11-04 16:17:07 |
| Show.js | 1085 | 2022-11-04 16:17:07 |