Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000066756-21-000081-index-headers.html | 2021-11-03 17:44:24 | |
| 0000066756-21-000081-index.html | 2021-11-03 17:44:24 | |
| 0000066756-21-000081.txt | 2021-11-03 17:44:24 | |
 0000066756-21-000081-xbrl.zip | 346422 | 2021-11-03 17:44:24 |
| ale-20210930.htm | 1876284 | 2021-11-03 17:44:24 |
| ale-20210930.xsd | 62013 | 2021-11-03 17:44:24 |
| ale-20210930_cal.xml | 98066 | 2021-11-03 17:44:24 |
| ale-20210930_def.xml | 277888 | 2021-11-03 17:44:24 |
| ale-20210930_htm.xml | 1706362 | 2021-11-03 17:44:24 |
| ale-20210930_lab.xml | 699133 | 2021-11-03 17:44:24 |
| ale-20210930_pre.xml | 448143 | 2021-11-03 17:44:24 |
| ale9-30x2021exx31a.htm | 10767 | 2021-11-03 17:44:24 |
| ale9-30x2021exx31b.htm | 10742 | 2021-11-03 17:44:24 |
| ale9-30x2021exx32.htm | 8854 | 2021-11-03 17:44:24 |
| ale9-30x2021exx4.htm | 148076 | 2021-11-03 17:44:24 |
| ale9-30x2021exx95.htm | 12125 | 2021-11-03 17:44:24 |
| ale9-30x2021exx99.htm | 131761 | 2021-11-03 17:44:24 |
| FilingSummary.xml | 31307 | 2021-11-03 17:44:24 |
| Financial_Report.xlsx | 89834 | 2021-11-03 17:44:24 |
 logoallete201510ka14.jpg | 105668 | 2021-11-03 17:44:24 |
| MetaLinks.json | 684987 | 2021-11-03 17:44:24 |
| R1.htm | 51059 | 2021-11-03 17:44:24 |
| R10.htm | 75118 | 2021-11-03 17:44:24 |
| R11.htm | 58899 | 2021-11-03 17:44:24 |
| R12.htm | 16210 | 2021-11-03 17:44:24 |
| R13.htm | 62096 | 2021-11-03 17:44:24 |
| R14.htm | 26857 | 2021-11-03 17:44:24 |
| R15.htm | 51522 | 2021-11-03 17:44:24 |
| R16.htm | 31955 | 2021-11-03 17:44:24 |
| R17.htm | 58440 | 2021-11-03 17:44:24 |
| R18.htm | 41474 | 2021-11-03 17:44:24 |
| R19.htm | 72067 | 2021-11-03 17:44:24 |
| R2.htm | 119515 | 2021-11-03 17:44:24 |
| R20.htm | 39652 | 2021-11-03 17:44:24 |
| R21.htm | 78600 | 2021-11-03 17:44:24 |
| R22.htm | 38745 | 2021-11-03 17:44:24 |
| R23.htm | 17560 | 2021-11-03 17:44:24 |
| R24.htm | 58552 | 2021-11-03 17:44:24 |
| R25.htm | 18467 | 2021-11-03 17:44:24 |
| R26.htm | 30939 | 2021-11-03 17:44:24 |
| R27.htm | 56278 | 2021-11-03 17:44:24 |
| R28.htm | 36682 | 2021-11-03 17:44:24 |
| R29.htm | 67419 | 2021-11-03 17:44:24 |
| R3.htm | 14701 | 2021-11-03 17:44:24 |
| R30.htm | 76096 | 2021-11-03 17:44:24 |
| R31.htm | 15533 | 2021-11-03 17:44:24 |
| R32.htm | 11197 | 2021-11-03 17:44:24 |
| R33.htm | 25344 | 2021-11-03 17:44:24 |
| R34.htm | 53120 | 2021-11-03 17:44:24 |
| R35.htm | 8954 | 2021-11-03 17:44:24 |
| R36.htm | 13243 | 2021-11-03 17:44:24 |
| R37.htm | 9277 | 2021-11-03 17:44:24 |
| R38.htm | 53882 | 2021-11-03 17:44:24 |
| R39.htm | 31429 | 2021-11-03 17:44:24 |
| R4.htm | 103334 | 2021-11-03 17:44:24 |
| R40.htm | 34904 | 2021-11-03 17:44:24 |
| R41.htm | 47533 | 2021-11-03 17:44:24 |
| R42.htm | 11048 | 2021-11-03 17:44:24 |
| R43.htm | 44415 | 2021-11-03 17:44:24 |
| R44.htm | 7493 | 2021-11-03 17:44:24 |
| R45.htm | 20818 | 2021-11-03 17:44:24 |
| R46.htm | 18763 | 2021-11-03 17:44:24 |
| R47.htm | 31073 | 2021-11-03 17:44:24 |
| R48.htm | 40683 | 2021-11-03 17:44:24 |
| R49.htm | 67941 | 2021-11-03 17:44:24 |
| R5.htm | 35822 | 2021-11-03 17:44:24 |
| R50.htm | 36757 | 2021-11-03 17:44:24 |
| R51.htm | 82990 | 2021-11-03 17:44:24 |
| R6.htm | 5592 | 2021-11-03 17:44:24 |
| R7.htm | 94849 | 2021-11-03 17:44:24 |
| R8.htm | 62360 | 2021-11-03 17:44:24 |
| R9.htm | 13065 | 2021-11-03 17:44:24 |
| report.css | 2767 | 2021-11-03 17:44:24 |
| Show.js | 1085 | 2021-11-03 17:44:24 |