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| 0000070145-19-000023-index.html | 2019-08-02 13:44:14 | |
| 0000070145-19-000023.txt | 2019-08-02 13:44:14 | |
 0000070145-19-000023-xbrl.zip | 327341 | 2019-08-02 13:44:14 |
| FilingSummary.xml | 34010 | 2019-08-02 13:44:14 |
| Financial_Report.xlsx | 89696 | 2019-08-02 13:44:14 |
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| nfg-20190630.xsd | 60216 | 2019-08-02 13:44:14 |
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| nfg-20190630_lab.xml | 805612 | 2019-08-02 13:44:14 |
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| nfg-6302019x10q.htm | 2761356 | 2019-08-02 13:44:14 |
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| nfg-6302019xexhibit311.htm | 9864 | 2019-08-02 13:44:14 |
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| report.css | 2767 | 2019-08-02 13:44:14 |
| Show.js | 1085 | 2019-08-02 13:44:14 |