Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-159182-index-headers.html | 2020-06-03 08:51:40 | |
| 0001193125-20-159182-index.html | 2020-06-03 08:51:40 | |
| 0001193125-20-159182.txt | 2020-06-03 08:51:40 | |
 0001193125-20-159182-xbrl.zip | 58443 | 2020-06-03 08:51:40 |
| d936269d8k.htm | 36590 | 2020-06-03 08:51:40 |
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| d936269dex11.htm | 148288 | 2020-06-03 08:51:40 |
| d936269dex411.htm | 92294 | 2020-06-03 08:51:40 |
| d936269dex511.htm | 10182 | 2020-06-03 08:51:40 |
| d936269dex512.htm | 16070 | 2020-06-03 08:51:40 |
| FilingSummary.xml | 1835 | 2020-06-03 08:51:40 |
| Financial_Report.xlsx | 5784 | 2020-06-03 08:51:40 |
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 g936269s1.jpg | 3029 | 2020-06-03 08:51:40 |
| MetaLinks.json | 18378 | 2020-06-03 08:51:40 |
| nfg-20200603.xsd | 3086 | 2020-06-03 08:51:40 |
| nfg-20200603_lab.xml | 17372 | 2020-06-03 08:51:40 |
| nfg-20200603_pre.xml | 10964 | 2020-06-03 08:51:40 |
| R1.htm | 38615 | 2020-06-03 08:51:40 |
| report.css | 2767 | 2020-06-03 08:51:40 |
| Show.js | 1085 | 2020-06-03 08:51:40 |