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| 0000072909-20-000005-index.html | 2020-05-07 14:48:26 | |
| 0000072909-20-000005.txt | 2020-05-07 14:48:26 | |
 0000072909-20-000005-xbrl.zip | 176938 | 2020-05-07 14:48:26 |
| FilingSummary.xml | 28610 | 2020-05-07 14:48:26 |
| Financial_Report.xlsx | 53394 | 2020-05-07 14:48:26 |
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| nspw-20200331.xsd | 39979 | 2020-05-07 14:48:26 |
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| report.css | 2767 | 2020-05-07 14:48:26 |
| Show.js | 1085 | 2020-05-07 14:48:26 |