Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-22-113860-index-headers.html | 2022-11-02 13:01:50 | |
| 0001104659-22-113860-index.html | 2022-11-02 13:01:50 | |
| 0001104659-22-113860.txt | 2022-11-02 13:01:50 | |
 0001104659-22-113860-xbrl.zip | 903417 | 2022-11-02 13:01:50 |
| FilingSummary.xml | 61351 | 2022-11-02 13:01:50 |
| Financial_Report.xlsx | 240457 | 2022-11-02 13:01:50 |
| MetaLinks.json | 1326910 | 2022-11-02 13:01:50 |
| pfg-20220930.xsd | 147246 | 2022-11-02 13:01:50 |
| pfg-20220930x10q.htm | 11792370 | 2022-11-02 13:01:50 |
 pfg-20220930x10q038.jpg | 46032 | 2022-11-02 13:01:50 |
| pfg-20220930x10q_htm.xml | 15894709 | 2022-11-02 13:01:50 |
| pfg-20220930xex31d1.htm | 11512 | 2022-11-02 13:01:50 |
| pfg-20220930xex31d2.htm | 11573 | 2022-11-02 13:01:50 |
| pfg-20220930xex32d1.htm | 4228 | 2022-11-02 13:01:50 |
| pfg-20220930xex32d2.htm | 4265 | 2022-11-02 13:01:50 |
| pfg-20220930_cal.xml | 166610 | 2022-11-02 13:01:50 |
| pfg-20220930_def.xml | 636589 | 2022-11-02 13:01:50 |
| pfg-20220930_lab.xml | 1186226 | 2022-11-02 13:01:50 |
| pfg-20220930_pre.xml | 843861 | 2022-11-02 13:01:50 |
| R1.htm | 51548 | 2022-11-02 13:01:50 |
| R10.htm | 1676039 | 2022-11-02 13:01:50 |
| R11.htm | 704742 | 2022-11-02 13:01:50 |
| R12.htm | 33697 | 2022-11-02 13:01:50 |
| R13.htm | 43197 | 2022-11-02 13:01:50 |
| R14.htm | 78942 | 2022-11-02 13:01:50 |
| R15.htm | 53836 | 2022-11-02 13:01:50 |
| R16.htm | 82876 | 2022-11-02 13:01:50 |
| R17.htm | 12695 | 2022-11-02 13:01:50 |
| R18.htm | 478617 | 2022-11-02 13:01:50 |
| R19.htm | 2007733 | 2022-11-02 13:01:50 |
| R2.htm | 134595 | 2022-11-02 13:01:50 |
| R20.htm | 288082 | 2022-11-02 13:01:50 |
| R21.htm | 407076 | 2022-11-02 13:01:50 |
| R22.htm | 24130 | 2022-11-02 13:01:50 |
| R23.htm | 66628 | 2022-11-02 13:01:50 |
| R24.htm | 60407 | 2022-11-02 13:01:50 |
| R25.htm | 28375 | 2022-11-02 13:01:50 |
| R26.htm | 108511 | 2022-11-02 13:01:50 |
| R27.htm | 1663228 | 2022-11-02 13:01:50 |
| R28.htm | 690182 | 2022-11-02 13:01:50 |
| R29.htm | 33522 | 2022-11-02 13:01:50 |
| R3.htm | 39950 | 2022-11-02 13:01:50 |
| R30.htm | 42827 | 2022-11-02 13:01:50 |
| R31.htm | 70817 | 2022-11-02 13:01:50 |
| R32.htm | 49013 | 2022-11-02 13:01:50 |
| R33.htm | 77533 | 2022-11-02 13:01:50 |
| R34.htm | 480553 | 2022-11-02 13:01:50 |
| R35.htm | 1983843 | 2022-11-02 13:01:50 |
| R36.htm | 264722 | 2022-11-02 13:01:50 |
| R37.htm | 401157 | 2022-11-02 13:01:50 |
| R38.htm | 16258 | 2022-11-02 13:01:50 |
| R39.htm | 65491 | 2022-11-02 13:01:50 |
| R4.htm | 84677 | 2022-11-02 13:01:50 |
| R40.htm | 16745 | 2022-11-02 13:01:50 |
| R41.htm | 29367 | 2022-11-02 13:01:50 |
| R42.htm | 40443 | 2022-11-02 13:01:50 |
| R43.htm | 47409 | 2022-11-02 13:01:50 |
| R44.htm | 52923 | 2022-11-02 13:01:50 |
| R45.htm | 35390 | 2022-11-02 13:01:50 |
| R46.htm | 34950 | 2022-11-02 13:01:50 |
| R47.htm | 36841 | 2022-11-02 13:01:50 |
| R48.htm | 91847 | 2022-11-02 13:01:50 |
| R49.htm | 15762 | 2022-11-02 13:01:50 |
| R5.htm | 42266 | 2022-11-02 13:01:50 |
| R50.htm | 92149 | 2022-11-02 13:01:50 |
| R51.htm | 58275 | 2022-11-02 13:01:50 |
| R52.htm | 48967 | 2022-11-02 13:01:50 |
| R53.htm | 64545 | 2022-11-02 13:01:50 |
| R54.htm | 9142 | 2022-11-02 13:01:50 |
| R55.htm | 14537 | 2022-11-02 13:01:50 |
| R56.htm | 15680 | 2022-11-02 13:01:50 |
| R57.htm | 11169 | 2022-11-02 13:01:50 |
| R58.htm | 45821 | 2022-11-02 13:01:50 |
| R59.htm | 32029 | 2022-11-02 13:01:50 |
| R6.htm | 69260 | 2022-11-02 13:01:50 |
| R60.htm | 23992 | 2022-11-02 13:01:50 |
| R61.htm | 21243 | 2022-11-02 13:01:50 |
| R62.htm | 20776 | 2022-11-02 13:01:50 |
| R63.htm | 53189 | 2022-11-02 13:01:50 |
| R64.htm | 17607 | 2022-11-02 13:01:50 |
| R65.htm | 15220 | 2022-11-02 13:01:50 |
| R66.htm | 31284 | 2022-11-02 13:01:50 |
| R67.htm | 15389 | 2022-11-02 13:01:50 |
| R68.htm | 18744 | 2022-11-02 13:01:50 |
| R69.htm | 8115 | 2022-11-02 13:01:50 |
| R7.htm | 75127 | 2022-11-02 13:01:50 |
| R70.htm | 27982 | 2022-11-02 13:01:50 |
| R71.htm | 28077 | 2022-11-02 13:01:50 |
| R72.htm | 48901 | 2022-11-02 13:01:50 |
| R73.htm | 12112 | 2022-11-02 13:01:50 |
| R74.htm | 42409 | 2022-11-02 13:01:50 |
| R75.htm | 75392 | 2022-11-02 13:01:50 |
| R76.htm | 67733 | 2022-11-02 13:01:50 |
| R77.htm | 111905 | 2022-11-02 13:01:50 |
| R78.htm | 164667 | 2022-11-02 13:01:50 |
| R79.htm | 29504 | 2022-11-02 13:01:50 |
| R8.htm | 75894 | 2022-11-02 13:01:50 |
| R80.htm | 142736 | 2022-11-02 13:01:50 |
| R81.htm | 6356 | 2022-11-02 13:01:50 |
| R82.htm | 44591 | 2022-11-02 13:01:50 |
| R83.htm | 21858 | 2022-11-02 13:01:50 |
| R84.htm | 63405 | 2022-11-02 13:01:50 |
| R85.htm | 13071 | 2022-11-02 13:01:50 |
| R86.htm | 29589 | 2022-11-02 13:01:50 |
| R87.htm | 14961 | 2022-11-02 13:01:50 |
| R88.htm | 48322 | 2022-11-02 13:01:50 |
| R89.htm | 92053 | 2022-11-02 13:01:50 |
| R9.htm | 119249 | 2022-11-02 13:01:50 |
| R90.htm | 11574 | 2022-11-02 13:01:50 |
| R91.htm | 18345 | 2022-11-02 13:01:50 |
| R92.htm | 11730 | 2022-11-02 13:01:50 |
| R93.htm | 22639 | 2022-11-02 13:01:50 |
| R94.htm | 10369 | 2022-11-02 13:01:50 |
| R95.htm | 59910 | 2022-11-02 13:01:50 |
| report.css | 2768 | 2022-11-02 13:01:50 |
| Show.js | 1086 | 2022-11-02 13:01:50 |