Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000070145-20-000004-index-headers.html | 2020-01-31 07:51:20 | |
| 0000070145-20-000004-index.html | 2020-01-31 07:51:20 | |
| 0000070145-20-000004.txt | 2020-01-31 07:51:20 | |
 0000070145-20-000004-xbrl.zip | 67027 | 2020-01-31 07:51:20 |
 exhibit998kimagea14.jpg | 38108 | 2020-01-31 07:51:20 |
| FilingSummary.xml | 1806 | 2020-01-31 07:51:20 |
| Financial_Report.xlsx | 5793 | 2020-01-31 07:51:20 |
| MetaLinks.json | 19013 | 2020-01-31 07:51:20 |
| nfg-12312019xexhibit99.htm | 1597710 | 2020-01-31 07:51:20 |
| nfg-1302020x8k.htm | 48146 | 2020-01-31 07:51:20 |
| nfg-1302020x8k_htm.xml | 4258 | 2020-01-31 07:51:20 |
| nfg-20200130.xsd | 4657 | 2020-01-31 07:51:20 |
| nfg-20200130_cal.xml | 690 | 2020-01-31 07:51:20 |
| nfg-20200130_def.xml | 1540 | 2020-01-31 07:51:20 |
| nfg-20200130_lab.xml | 26142 | 2020-01-31 07:51:20 |
| nfg-20200130_pre.xml | 13646 | 2020-01-31 07:51:20 |
| R1.htm | 38627 | 2020-01-31 07:51:20 |
| report.css | 2766 | 2020-01-31 07:51:20 |
| Show.js | 1085 | 2020-01-31 07:51:20 |