Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-23-055435-index-headers.html | 2023-05-03 14:54:32 | |
| 0001104659-23-055435-index.html | 2023-05-03 14:54:32 | |
| 0001104659-23-055435.txt | 2023-05-03 14:54:32 | |
 0001104659-23-055435-xbrl.zip | 1055799 | 2023-05-03 14:54:32 |
| FilingSummary.xml | 116180 | 2023-05-03 14:54:32 |
| Financial_Report.xlsx | 350217 | 2023-05-03 14:54:32 |
| MetaLinks.json | 1845273 | 2023-05-03 14:54:32 |
| pfg-20230331.xsd | 195340 | 2023-05-03 14:54:32 |
| pfg-20230331x10q.htm | 12595791 | 2023-05-03 14:54:32 |
 pfg-20230331x10q061.jpg | 46032 | 2023-05-03 14:54:32 |
| pfg-20230331x10q_htm.xml | 18981716 | 2023-05-03 14:54:32 |
| pfg-20230331xex31d1.htm | 11571 | 2023-05-03 14:54:32 |
| pfg-20230331xex31d2.htm | 11567 | 2023-05-03 14:54:32 |
| pfg-20230331xex32d1.htm | 4076 | 2023-05-03 14:54:32 |
| pfg-20230331xex32d2.htm | 4113 | 2023-05-03 14:54:32 |
| pfg-20230331_cal.xml | 174325 | 2023-05-03 14:54:32 |
| pfg-20230331_def.xml | 1179228 | 2023-05-03 14:54:32 |
| pfg-20230331_lab.xml | 1469735 | 2023-05-03 14:54:32 |
| pfg-20230331_pre.xml | 1491777 | 2023-05-03 14:54:32 |
| R1.htm | 51546 | 2023-05-03 14:54:32 |
| R10.htm | 1279382 | 2023-05-03 14:54:32 |
| R100.htm | 34204 | 2023-05-03 14:54:32 |
| R101.htm | 52052 | 2023-05-03 14:54:32 |
| R102.htm | 39429 | 2023-05-03 14:54:32 |
| R103.htm | 104906 | 2023-05-03 14:54:32 |
| R104.htm | 34232 | 2023-05-03 14:54:32 |
| R105.htm | 70656 | 2023-05-03 14:54:32 |
| R106.htm | 30070 | 2023-05-03 14:54:32 |
| R107.htm | 29642 | 2023-05-03 14:54:32 |
| R108.htm | 20707 | 2023-05-03 14:54:32 |
| R109.htm | 47705 | 2023-05-03 14:54:32 |
| R11.htm | 511863 | 2023-05-03 14:54:32 |
| R110.htm | 42025 | 2023-05-03 14:54:32 |
| R111.htm | 46051 | 2023-05-03 14:54:32 |
| R112.htm | 8349 | 2023-05-03 14:54:32 |
| R113.htm | 26206 | 2023-05-03 14:54:32 |
| R114.htm | 7637 | 2023-05-03 14:54:32 |
| R115.htm | 29326 | 2023-05-03 14:54:32 |
| R116.htm | 13406 | 2023-05-03 14:54:32 |
| R117.htm | 65273 | 2023-05-03 14:54:32 |
| R118.htm | 33029 | 2023-05-03 14:54:32 |
| R119.htm | 46249 | 2023-05-03 14:54:32 |
| R12.htm | 169497 | 2023-05-03 14:54:32 |
| R120.htm | 7913 | 2023-05-03 14:54:32 |
| R121.htm | 39019 | 2023-05-03 14:54:32 |
| R122.htm | 72097 | 2023-05-03 14:54:32 |
| R123.htm | 60720 | 2023-05-03 14:54:32 |
| R124.htm | 117252 | 2023-05-03 14:54:32 |
| R125.htm | 132325 | 2023-05-03 14:54:32 |
| R126.htm | 18769 | 2023-05-03 14:54:32 |
| R127.htm | 120174 | 2023-05-03 14:54:32 |
| R128.htm | 46801 | 2023-05-03 14:54:32 |
| R129.htm | 19865 | 2023-05-03 14:54:32 |
| R13.htm | 201029 | 2023-05-03 14:54:32 |
| R130.htm | 59406 | 2023-05-03 14:54:32 |
| R131.htm | 14501 | 2023-05-03 14:54:32 |
| R132.htm | 27890 | 2023-05-03 14:54:32 |
| R133.htm | 14709 | 2023-05-03 14:54:32 |
| R134.htm | 40595 | 2023-05-03 14:54:32 |
| R135.htm | 75199 | 2023-05-03 14:54:32 |
| R136.htm | 11009 | 2023-05-03 14:54:32 |
| R137.htm | 18342 | 2023-05-03 14:54:32 |
| R138.htm | 11722 | 2023-05-03 14:54:32 |
| R139.htm | 22640 | 2023-05-03 14:54:32 |
| R14.htm | 610186 | 2023-05-03 14:54:32 |
| R140.htm | 10368 | 2023-05-03 14:54:32 |
| R141.htm | 57981 | 2023-05-03 14:54:32 |
| R142.htm | 6452 | 2023-05-03 14:54:32 |
| R15.htm | 621634 | 2023-05-03 14:54:32 |
| R16.htm | 220254 | 2023-05-03 14:54:32 |
| R17.htm | 88755 | 2023-05-03 14:54:32 |
| R18.htm | 111789 | 2023-05-03 14:54:32 |
| R19.htm | 39622 | 2023-05-03 14:54:32 |
| R2.htm | 139320 | 2023-05-03 14:54:32 |
| R20.htm | 46081 | 2023-05-03 14:54:32 |
| R21.htm | 10862 | 2023-05-03 14:54:32 |
| R22.htm | 299499 | 2023-05-03 14:54:32 |
| R23.htm | 1383305 | 2023-05-03 14:54:32 |
| R24.htm | 180145 | 2023-05-03 14:54:32 |
| R25.htm | 214493 | 2023-05-03 14:54:32 |
| R26.htm | 24088 | 2023-05-03 14:54:32 |
| R27.htm | 38655 | 2023-05-03 14:54:32 |
| R28.htm | 5378 | 2023-05-03 14:54:32 |
| R29.htm | 724162 | 2023-05-03 14:54:32 |
| R3.htm | 39981 | 2023-05-03 14:54:32 |
| R30.htm | 716214 | 2023-05-03 14:54:32 |
| R31.htm | 108377 | 2023-05-03 14:54:32 |
| R32.htm | 1262613 | 2023-05-03 14:54:32 |
| R33.htm | 498305 | 2023-05-03 14:54:32 |
| R34.htm | 179225 | 2023-05-03 14:54:32 |
| R35.htm | 202998 | 2023-05-03 14:54:32 |
| R36.htm | 617630 | 2023-05-03 14:54:32 |
| R37.htm | 796287 | 2023-05-03 14:54:32 |
| R38.htm | 265954 | 2023-05-03 14:54:32 |
| R39.htm | 82297 | 2023-05-03 14:54:32 |
| R4.htm | 87895 | 2023-05-03 14:54:32 |
| R40.htm | 109980 | 2023-05-03 14:54:32 |
| R41.htm | 35590 | 2023-05-03 14:54:32 |
| R42.htm | 41102 | 2023-05-03 14:54:32 |
| R43.htm | 301271 | 2023-05-03 14:54:32 |
| R44.htm | 1359771 | 2023-05-03 14:54:32 |
| R45.htm | 158918 | 2023-05-03 14:54:32 |
| R46.htm | 211651 | 2023-05-03 14:54:32 |
| R47.htm | 16251 | 2023-05-03 14:54:32 |
| R48.htm | 37486 | 2023-05-03 14:54:32 |
| R49.htm | 71941 | 2023-05-03 14:54:32 |
| R5.htm | 46484 | 2023-05-03 14:54:32 |
| R50.htm | 74499 | 2023-05-03 14:54:32 |
| R51.htm | 63904 | 2023-05-03 14:54:32 |
| R52.htm | 49186 | 2023-05-03 14:54:32 |
| R53.htm | 17655 | 2023-05-03 14:54:32 |
| R54.htm | 13058 | 2023-05-03 14:54:32 |
| R55.htm | 80299 | 2023-05-03 14:54:32 |
| R56.htm | 49361 | 2023-05-03 14:54:32 |
| R57.htm | 107055 | 2023-05-03 14:54:32 |
| R58.htm | 27786 | 2023-05-03 14:54:32 |
| R59.htm | 25402 | 2023-05-03 14:54:32 |
| R6.htm | 50757 | 2023-05-03 14:54:32 |
| R60.htm | 54100 | 2023-05-03 14:54:32 |
| R61.htm | 38113 | 2023-05-03 14:54:32 |
| R62.htm | 47407 | 2023-05-03 14:54:32 |
| R63.htm | 47287 | 2023-05-03 14:54:32 |
| R64.htm | 35388 | 2023-05-03 14:54:32 |
| R65.htm | 39805 | 2023-05-03 14:54:32 |
| R66.htm | 21156 | 2023-05-03 14:54:32 |
| R67.htm | 86466 | 2023-05-03 14:54:32 |
| R68.htm | 15752 | 2023-05-03 14:54:32 |
| R69.htm | 92911 | 2023-05-03 14:54:32 |
| R7.htm | 60255 | 2023-05-03 14:54:32 |
| R70.htm | 61466 | 2023-05-03 14:54:32 |
| R71.htm | 45062 | 2023-05-03 14:54:32 |
| R72.htm | 57557 | 2023-05-03 14:54:32 |
| R73.htm | 14535 | 2023-05-03 14:54:32 |
| R74.htm | 16039 | 2023-05-03 14:54:32 |
| R75.htm | 11166 | 2023-05-03 14:54:32 |
| R76.htm | 45812 | 2023-05-03 14:54:32 |
| R77.htm | 32042 | 2023-05-03 14:54:32 |
| R78.htm | 24028 | 2023-05-03 14:54:32 |
| R79.htm | 21248 | 2023-05-03 14:54:32 |
| R8.htm | 718025 | 2023-05-03 14:54:32 |
| R80.htm | 19445 | 2023-05-03 14:54:32 |
| R81.htm | 47051 | 2023-05-03 14:54:32 |
| R82.htm | 16002 | 2023-05-03 14:54:32 |
| R83.htm | 7953 | 2023-05-03 14:54:32 |
| R84.htm | 37973 | 2023-05-03 14:54:32 |
| R85.htm | 31309 | 2023-05-03 14:54:32 |
| R86.htm | 29913 | 2023-05-03 14:54:32 |
| R87.htm | 11149 | 2023-05-03 14:54:32 |
| R88.htm | 16519 | 2023-05-03 14:54:32 |
| R89.htm | 4517 | 2023-05-03 14:54:32 |
| R9.htm | 119180 | 2023-05-03 14:54:32 |
| R90.htm | 34390 | 2023-05-03 14:54:32 |
| R91.htm | 27984 | 2023-05-03 14:54:32 |
| R92.htm | 30160 | 2023-05-03 14:54:32 |
| R93.htm | 33303 | 2023-05-03 14:54:32 |
| R94.htm | 22924 | 2023-05-03 14:54:32 |
| R95.htm | 29236 | 2023-05-03 14:54:32 |
| R96.htm | 51601 | 2023-05-03 14:54:32 |
| R97.htm | 189183 | 2023-05-03 14:54:32 |
| R98.htm | 46973 | 2023-05-03 14:54:32 |
| R99.htm | 28037 | 2023-05-03 14:54:32 |
| report.css | 2768 | 2023-05-03 14:54:32 |
| Show.js | 1086 | 2023-05-03 14:54:32 |