Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000070145-21-000010-index-headers.html | 2021-05-07 08:10:09 | |
| 0000070145-21-000010-index.html | 2021-05-07 08:10:09 | |
| 0000070145-21-000010.txt | 2021-05-07 08:10:09 | |
 0000070145-21-000010-xbrl.zip | 77608 | 2021-05-07 08:10:09 |
 exhibit998kimagea151.jpg | 38108 | 2021-05-07 08:10:09 |
| FilingSummary.xml | 1797 | 2021-05-07 08:10:09 |
| Financial_Report.xlsx | 5687 | 2021-05-07 08:10:09 |
| MetaLinks.json | 18010 | 2021-05-07 08:10:09 |
| nfg-20210506.htm | 40412 | 2021-05-07 08:10:09 |
| nfg-20210506.xsd | 2511 | 2021-05-07 08:10:09 |
| nfg-20210506_cal.xml | 792 | 2021-05-07 08:10:09 |
| nfg-20210506_def.xml | 1748 | 2021-05-07 08:10:09 |
| nfg-20210506_htm.xml | 11002 | 2021-05-07 08:10:09 |
| nfg-20210506_lab.xml | 24275 | 2021-05-07 08:10:09 |
| nfg-20210506_pre.xml | 12728 | 2021-05-07 08:10:09 |
| nfg-3312021xexhibit99x8k.htm | 1674773 | 2021-05-07 08:10:09 |
| R1.htm | 38631 | 2021-05-07 08:10:09 |
| report.css | 2767 | 2021-05-07 08:10:09 |
| Show.js | 1085 | 2021-05-07 08:10:09 |