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|---|---|---|
 0000070145-25-000027-index-headers.html | 2025-07-31 08:27:02 | |
| 0000070145-25-000027-index.html | 2025-07-31 08:27:02 | |
| 0000070145-25-000027.txt | 2025-07-31 08:27:02 | |
 0000070145-25-000027-xbrl.zip | 72555 | 2025-07-31 08:27:02 |
 exhibit998kimagea15a.jpg | 38108 | 2025-07-31 08:27:02 |
| FilingSummary.xml | 1698 | 2025-07-31 08:27:02 |
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| nfg-20250730.htm | 32839 | 2025-07-31 08:27:02 |
| nfg-20250730.xsd | 1875 | 2025-07-31 08:27:02 |
| nfg-20250730_htm.xml | 2713 | 2025-07-31 08:27:02 |
| nfg-20250730_lab.xml | 21885 | 2025-07-31 08:27:02 |
| nfg-20250730_pre.xml | 12592 | 2025-07-31 08:27:02 |
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| R1.htm | 38093 | 2025-07-31 08:27:02 |
| report.css | 2767 | 2025-07-31 08:27:02 |
| Show.js | 1084 | 2025-07-31 08:27:02 |