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| 0000070145-17-000054-index.html | 2017-11-17 14:07:12 | |
| 0000070145-17-000054.txt | 2017-11-17 14:07:12 | |
 0000070145-17-000054-xbrl.zip | 563353 | 2017-11-17 14:07:12 |
| FilingSummary.xml | 62131 | 2017-11-17 14:07:12 |
| Financial_Report.xlsx | 171282 | 2017-11-17 14:07:12 |
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| nfg-20170930.xml | 6150616 | 2017-11-17 14:07:12 |
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| nfg-9302017xexhibit101.htm | 189010 | 2017-11-17 14:07:12 |
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| report.css | 2768 | 2017-11-17 14:07:12 |
| Show.js | 1411 | 2017-11-17 14:07:12 |