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| 0000702165-22-000028-index.html | 2022-07-27 12:07:16 | |
| 0000702165-22-000028.txt | 2022-07-27 12:07:16 | |
 0000702165-22-000028-xbrl.zip | 200264 | 2022-07-27 12:07:16 |
| FilingSummary.xml | 28345 | 2022-07-27 12:07:16 |
| Financial_Report.xlsx | 61879 | 2022-07-27 12:07:16 |
| MetaLinks.json | 481919 | 2022-07-27 12:07:16 |
| nsc-20220630.htm | 1130192 | 2022-07-27 12:07:16 |
| nsc-20220630.xsd | 33457 | 2022-07-27 12:07:16 |
| nsc-20220630_cal.xml | 48753 | 2022-07-27 12:07:16 |
| nsc-20220630_def.xml | 115966 | 2022-07-27 12:07:16 |
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| nsc-20220630_htm.xml | 818131 | 2022-07-27 12:07:16 |
| nsc-20220630_lab.xml | 387003 | 2022-07-27 12:07:16 |
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| nsc063022exhibit31a.htm | 9944 | 2022-07-27 12:07:16 |
| nsc063022exhibit31b.htm | 9919 | 2022-07-27 12:07:16 |
| nsc063022exhibit32.htm | 6912 | 2022-07-27 12:07:16 |
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| report.css | 2767 | 2022-07-27 12:07:16 |
| Show.js | 1085 | 2022-07-27 12:07:16 |