Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000070145-21-000005-index-headers.html | 2021-02-05 08:44:57 | |
| 0000070145-21-000005-index.html | 2021-02-05 08:44:57 | |
| 0000070145-21-000005.txt | 2021-02-05 08:44:57 | |
 0000070145-21-000005-xbrl.zip | 63525 | 2021-02-05 08:44:57 |
 exhibit998kimagea151a.jpg | 38108 | 2021-02-05 08:44:57 |
| FilingSummary.xml | 1798 | 2021-02-05 08:44:57 |
| Financial_Report.xlsx | 5468 | 2021-02-05 08:44:57 |
| MetaLinks.json | 18010 | 2021-02-05 08:44:57 |
| nfg-12312020xexhibit99x8k.htm | 1220368 | 2021-02-05 08:44:57 |
| nfg-20210204.htm | 40061 | 2021-02-05 08:44:57 |
| nfg-20210204.xsd | 2511 | 2021-02-05 08:44:57 |
| nfg-20210204_cal.xml | 792 | 2021-02-05 08:44:57 |
| nfg-20210204_def.xml | 1748 | 2021-02-05 08:44:57 |
| nfg-20210204_htm.xml | 11002 | 2021-02-05 08:44:57 |
| nfg-20210204_lab.xml | 24275 | 2021-02-05 08:44:57 |
| nfg-20210204_pre.xml | 12728 | 2021-02-05 08:44:57 |
| R1.htm | 38633 | 2021-02-05 08:44:57 |
| report.css | 2767 | 2021-02-05 08:44:57 |
| Show.js | 1085 | 2021-02-05 08:44:57 |