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| 0000070145-17-000039-index.html | 2017-05-05 14:38:58 | |
| 0000070145-17-000039.txt | 2017-05-05 14:38:58 | |
 0000070145-17-000039-xbrl.zip | 240614 | 2017-05-05 14:38:58 |
| FilingSummary.xml | 31302 | 2017-05-05 14:38:58 |
| Financial_Report.xlsx | 76450 | 2017-05-05 14:38:58 |
| nfg-20170331.xml | 2095745 | 2017-05-05 14:38:58 |
| nfg-20170331.xsd | 59760 | 2017-05-05 14:38:58 |
| nfg-20170331_cal.xml | 91460 | 2017-05-05 14:38:58 |
| nfg-20170331_def.xml | 262383 | 2017-05-05 14:38:58 |
| nfg-20170331_lab.xml | 726833 | 2017-05-05 14:38:58 |
| nfg-20170331_pre.xml | 408058 | 2017-05-05 14:38:58 |
| nfg-3312017x10q.htm | 1610246 | 2017-05-05 14:38:58 |
| nfg-3312017xexhibit12.htm | 67869 | 2017-05-05 14:38:58 |
| nfg-3312017xexhibit311.htm | 9864 | 2017-05-05 14:38:58 |
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| nfg-3312017xexhibit32.htm | 6056 | 2017-05-05 14:38:58 |
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| report.css | 2767 | 2017-05-05 14:38:58 |
| Show.js | 1410 | 2017-05-05 14:38:58 |