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|---|---|---|
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| 0000072909-24-000007-index.html | 2024-04-25 12:18:15 | |
| 0000072909-24-000007.txt | 2024-04-25 12:18:15 | |
 0000072909-24-000007-xbrl.zip | 144978 | 2024-04-25 12:18:15 |
| FilingSummary.xml | 24739 | 2024-04-25 12:18:15 |
| Financial_Report.xlsx | 52673 | 2024-04-25 12:18:15 |
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| nspw-20240331.htm | 618132 | 2024-04-25 12:18:15 |
| nspw-20240331.xsd | 30719 | 2024-04-25 12:18:15 |
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| nspwex3102q12024.htm | 10718 | 2024-04-25 12:18:15 |
| nspwex3201q12024.htm | 8858 | 2024-04-25 12:18:15 |
| R1.htm | 46680 | 2024-04-25 12:18:15 |
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| R8.htm | 16418 | 2024-04-25 12:18:15 |
| R9.htm | 28938 | 2024-04-25 12:18:15 |
| report.css | 2767 | 2024-04-25 12:18:15 |
| Show.js | 1085 | 2024-04-25 12:18:15 |