Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000066756-20-000082-index-headers.html | 2020-11-09 06:04:12 | |
| 0000066756-20-000082-index.html | 2020-11-09 06:04:12 | |
| 0000066756-20-000082.txt | 2020-11-09 06:04:12 | |
 0000066756-20-000082-xbrl.zip | 434490 | 2020-11-09 06:04:12 |
| ale-20200930.htm | 1956331 | 2020-11-09 06:04:12 |
| ale-20200930.xsd | 66477 | 2020-11-09 06:04:12 |
| ale-20200930_cal.xml | 112924 | 2020-11-09 06:04:12 |
| ale-20200930_def.xml | 300239 | 2020-11-09 06:04:12 |
| ale-20200930_htm.xml | 1828261 | 2020-11-09 06:04:12 |
| ale-20200930_lab.xml | 737107 | 2020-11-09 06:04:12 |
| ale-20200930_pre.xml | 469069 | 2020-11-09 06:04:12 |
| ale9-20x3030exx4a.htm | 183293 | 2020-11-09 06:04:12 |
| ale9-30x2020exx31a.htm | 10771 | 2020-11-09 06:04:12 |
| ale9-30x2020exx31b.htm | 10753 | 2020-11-09 06:04:12 |
| ale9-30x2020exx32.htm | 8869 | 2020-11-09 06:04:12 |
| ale9-30x2020exx4.htm | 600966 | 2020-11-09 06:04:12 |
| ale9-30x2020exx95.htm | 12229 | 2020-11-09 06:04:12 |
| ale9-30x2020exx99.htm | 137731 | 2020-11-09 06:04:12 |
| FilingSummary.xml | 32666 | 2020-11-09 06:04:12 |
| Financial_Report.xlsx | 93665 | 2020-11-09 06:04:12 |
 image_01.jpg | 1237 | 2020-11-09 06:04:12 |
 logoallete201510ka141a.jpg | 105668 | 2020-11-09 06:04:12 |
| MetaLinks.json | 690845 | 2020-11-09 06:04:12 |
| R1.htm | 51098 | 2020-11-09 06:04:12 |
| R10.htm | 75982 | 2020-11-09 06:04:12 |
| R11.htm | 91941 | 2020-11-09 06:04:12 |
| R12.htm | 12983 | 2020-11-09 06:04:12 |
| R13.htm | 61551 | 2020-11-09 06:04:12 |
| R14.htm | 27999 | 2020-11-09 06:04:12 |
| R15.htm | 49241 | 2020-11-09 06:04:12 |
| R16.htm | 31938 | 2020-11-09 06:04:12 |
| R17.htm | 61084 | 2020-11-09 06:04:12 |
| R18.htm | 41595 | 2020-11-09 06:04:12 |
| R19.htm | 81496 | 2020-11-09 06:04:12 |
| R2.htm | 97206 | 2020-11-09 06:04:12 |
| R20.htm | 44633 | 2020-11-09 06:04:12 |
| R21.htm | 78732 | 2020-11-09 06:04:12 |
| R22.htm | 37470 | 2020-11-09 06:04:12 |
| R23.htm | 10500 | 2020-11-09 06:04:12 |
| R24.htm | 57924 | 2020-11-09 06:04:12 |
| R25.htm | 26165 | 2020-11-09 06:04:12 |
| R26.htm | 30924 | 2020-11-09 06:04:12 |
| R27.htm | 58679 | 2020-11-09 06:04:12 |
| R28.htm | 36802 | 2020-11-09 06:04:12 |
| R29.htm | 76832 | 2020-11-09 06:04:12 |
| R3.htm | 14695 | 2020-11-09 06:04:12 |
| R30.htm | 70284 | 2020-11-09 06:04:12 |
| R31.htm | 18000 | 2020-11-09 06:04:12 |
| R32.htm | 6014 | 2020-11-09 06:04:12 |
| R33.htm | 11476 | 2020-11-09 06:04:12 |
| R34.htm | 42959 | 2020-11-09 06:04:12 |
| R35.htm | 29470 | 2020-11-09 06:04:12 |
| R36.htm | 7241 | 2020-11-09 06:04:12 |
| R37.htm | 6974 | 2020-11-09 06:04:12 |
| R38.htm | 10021 | 2020-11-09 06:04:12 |
| R39.htm | 54784 | 2020-11-09 06:04:12 |
| R4.htm | 93497 | 2020-11-09 06:04:12 |
| R40.htm | 35048 | 2020-11-09 06:04:12 |
| R41.htm | 27619 | 2020-11-09 06:04:12 |
| R42.htm | 46951 | 2020-11-09 06:04:12 |
| R43.htm | 13762 | 2020-11-09 06:04:12 |
| R44.htm | 62734 | 2020-11-09 06:04:12 |
| R45.htm | 7493 | 2020-11-09 06:04:12 |
| R46.htm | 24306 | 2020-11-09 06:04:12 |
| R47.htm | 16123 | 2020-11-09 06:04:12 |
| R48.htm | 18776 | 2020-11-09 06:04:12 |
| R49.htm | 27768 | 2020-11-09 06:04:12 |
| R5.htm | 34246 | 2020-11-09 06:04:12 |
| R50.htm | 34472 | 2020-11-09 06:04:12 |
| R51.htm | 71419 | 2020-11-09 06:04:12 |
| R52.htm | 36755 | 2020-11-09 06:04:12 |
| R53.htm | 89148 | 2020-11-09 06:04:12 |
| R6.htm | 8363 | 2020-11-09 06:04:12 |
| R7.htm | 102216 | 2020-11-09 06:04:12 |
| R8.htm | 57473 | 2020-11-09 06:04:12 |
| R9.htm | 14785 | 2020-11-09 06:04:12 |
| report.css | 2767 | 2020-11-09 06:04:12 |
| Show.js | 1085 | 2020-11-09 06:04:12 |