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|---|---|---|
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| 0000070145-23-000010-index.html | 2023-02-03 12:56:05 | |
| 0000070145-23-000010.txt | 2023-02-03 12:56:05 | |
 0000070145-23-000010-xbrl.zip | 335446 | 2023-02-03 12:56:05 |
| FilingSummary.xml | 34931 | 2023-02-03 12:56:05 |
| Financial_Report.xlsx | 99296 | 2023-02-03 12:56:05 |
| MetaLinks.json | 771707 | 2023-02-03 12:56:05 |
| nfg-12312022xexhibit101.htm | 41978 | 2023-02-03 12:56:05 |
| nfg-12312022xexhibit102.htm | 43063 | 2023-02-03 12:56:05 |
| nfg-12312022xexhibit103.htm | 46018 | 2023-02-03 12:56:05 |
| nfg-12312022xexhibit311.htm | 9681 | 2023-02-03 12:56:05 |
| nfg-12312022xexhibit312.htm | 9766 | 2023-02-03 12:56:05 |
| nfg-12312022xexhibit32.htm | 6227 | 2023-02-03 12:56:05 |
| nfg-12312022xexhibit99.htm | 37445 | 2023-02-03 12:56:05 |
| nfg-20221231.htm | 1971960 | 2023-02-03 12:56:05 |
| nfg-20221231.xsd | 51375 | 2023-02-03 12:56:05 |
| nfg-20221231_cal.xml | 68091 | 2023-02-03 12:56:05 |
| nfg-20221231_def.xml | 295716 | 2023-02-03 12:56:05 |
| nfg-20221231_htm.xml | 2032120 | 2023-02-03 12:56:05 |
| nfg-20221231_lab.xml | 631482 | 2023-02-03 12:56:05 |
| nfg-20221231_pre.xml | 429518 | 2023-02-03 12:56:05 |
| R1.htm | 53193 | 2023-02-03 12:56:05 |
| R10.htm | 116905 | 2023-02-03 12:56:05 |
| R11.htm | 48719 | 2023-02-03 12:56:05 |
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| R9.htm | 139753 | 2023-02-03 12:56:05 |
| report.css | 2767 | 2023-02-03 12:56:05 |
| Show.js | 1085 | 2023-02-03 12:56:05 |