Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000070145-23-000007-index-headers.html | 2023-02-03 08:24:23 | |
| 0000070145-23-000007-index.html | 2023-02-03 08:24:23 | |
| 0000070145-23-000007.txt | 2023-02-03 08:24:23 | |
 0000070145-23-000007-xbrl.zip | 60370 | 2023-02-03 08:24:23 |
 exhibit998kimagea15.jpg | 38108 | 2023-02-03 08:24:23 |
| FilingSummary.xml | 1728 | 2023-02-03 08:24:23 |
| Financial_Report.xlsx | 5710 | 2023-02-03 08:24:23 |
| MetaLinks.json | 17801 | 2023-02-03 08:24:23 |
| nfg-12312022xexhibit99x8k.htm | 1200157 | 2023-02-03 08:24:23 |
| nfg-20230202.htm | 41289 | 2023-02-03 08:24:23 |
| nfg-20230202.xsd | 1992 | 2023-02-03 08:24:23 |
| nfg-20230202_htm.xml | 11076 | 2023-02-03 08:24:23 |
| nfg-20230202_lab.xml | 24137 | 2023-02-03 08:24:23 |
| nfg-20230202_pre.xml | 12590 | 2023-02-03 08:24:23 |
| R1.htm | 38110 | 2023-02-03 08:24:23 |
| report.css | 2767 | 2023-02-03 08:24:23 |
| Show.js | 1085 | 2023-02-03 08:24:23 |