Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-22-142436-index-headers.html | 2022-05-05 17:00:35 | |
| 0001193125-22-142436-index.html | 2022-05-05 17:00:35 | |
| 0001193125-22-142436.txt | 2022-05-05 17:00:35 | |
 0001193125-22-142436-xbrl.zip | 34232 | 2022-05-05 17:00:35 |
| d716627d8k.htm | 31362 | 2022-05-05 17:00:35 |
| d716627d8k_htm.xml | 3268 | 2022-05-05 17:00:35 |
| d716627dex99.htm | 88299 | 2022-05-05 17:00:35 |
| FilingSummary.xml | 1735 | 2022-05-05 17:00:35 |
| Financial_Report.xlsx | 5674 | 2022-05-05 17:00:35 |
 g716627ex99p10g1.jpg | 524575 | 2022-05-05 17:00:35 |
 g716627ex99p11g1.jpg | 383292 | 2022-05-05 17:00:35 |
 g716627ex99p12g1.jpg | 84590 | 2022-05-05 17:00:35 |
 g716627ex99p13g1.jpg | 326773 | 2022-05-05 17:00:35 |
 g716627ex99p14g1.jpg | 435281 | 2022-05-05 17:00:35 |
 g716627ex99p15g1.jpg | 85867 | 2022-05-05 17:00:35 |
 g716627ex99p16g1.jpg | 354152 | 2022-05-05 17:00:35 |
 g716627ex99p17g1.jpg | 139644 | 2022-05-05 17:00:35 |
 g716627ex99p18g1.jpg | 396713 | 2022-05-05 17:00:35 |
 g716627ex99p19g1.jpg | 534964 | 2022-05-05 17:00:35 |
 g716627ex99p1g1.jpg | 147278 | 2022-05-05 17:00:35 |
 g716627ex99p20g1.jpg | 429176 | 2022-05-05 17:00:35 |
 g716627ex99p21g1.jpg | 455883 | 2022-05-05 17:00:35 |
 g716627ex99p22g1.jpg | 483977 | 2022-05-05 17:00:35 |
 g716627ex99p23g1.jpg | 351598 | 2022-05-05 17:00:35 |
 g716627ex99p24g1.jpg | 354348 | 2022-05-05 17:00:35 |
 g716627ex99p25g1.jpg | 338479 | 2022-05-05 17:00:35 |
 g716627ex99p26g1.jpg | 485819 | 2022-05-05 17:00:35 |
 g716627ex99p27g1.jpg | 382599 | 2022-05-05 17:00:35 |
 g716627ex99p28g1.jpg | 374077 | 2022-05-05 17:00:35 |
 g716627ex99p29g1.jpg | 329919 | 2022-05-05 17:00:35 |
 g716627ex99p2g1.jpg | 543570 | 2022-05-05 17:00:35 |
 g716627ex99p30g1.jpg | 298502 | 2022-05-05 17:00:35 |
 g716627ex99p31g1.jpg | 332184 | 2022-05-05 17:00:35 |
 g716627ex99p32g1.jpg | 250741 | 2022-05-05 17:00:35 |
 g716627ex99p33g1.jpg | 399052 | 2022-05-05 17:00:35 |
 g716627ex99p34g1.jpg | 529013 | 2022-05-05 17:00:35 |
 g716627ex99p35g1.jpg | 108988 | 2022-05-05 17:00:35 |
 g716627ex99p36g1.jpg | 446041 | 2022-05-05 17:00:35 |
 g716627ex99p37g1.jpg | 544315 | 2022-05-05 17:00:35 |
 g716627ex99p38g1.jpg | 366366 | 2022-05-05 17:00:35 |
 g716627ex99p39g1.jpg | 383916 | 2022-05-05 17:00:35 |
 g716627ex99p3g1.jpg | 468557 | 2022-05-05 17:00:35 |
 g716627ex99p40g1.jpg | 209682 | 2022-05-05 17:00:35 |
 g716627ex99p41g1.jpg | 83926 | 2022-05-05 17:00:35 |
 g716627ex99p42g1.jpg | 300765 | 2022-05-05 17:00:35 |
 g716627ex99p43g1.jpg | 297261 | 2022-05-05 17:00:35 |
 g716627ex99p44g1.jpg | 259303 | 2022-05-05 17:00:35 |
 g716627ex99p45g1.jpg | 454671 | 2022-05-05 17:00:35 |
 g716627ex99p46g1.jpg | 476824 | 2022-05-05 17:00:35 |
 g716627ex99p47g1.jpg | 67417 | 2022-05-05 17:00:35 |
 g716627ex99p48g1.jpg | 285045 | 2022-05-05 17:00:35 |
 g716627ex99p49g1.jpg | 283803 | 2022-05-05 17:00:35 |
 g716627ex99p4g1.jpg | 287690 | 2022-05-05 17:00:35 |
 g716627ex99p50g1.jpg | 310978 | 2022-05-05 17:00:35 |
 g716627ex99p51g1.jpg | 42182 | 2022-05-05 17:00:35 |
 g716627ex99p52g1.jpg | 949218 | 2022-05-05 17:00:35 |
 g716627ex99p53g1.jpg | 352290 | 2022-05-05 17:00:35 |
 g716627ex99p54g1.jpg | 321378 | 2022-05-05 17:00:35 |
 g716627ex99p55g1.jpg | 395145 | 2022-05-05 17:00:35 |
 g716627ex99p56g1.jpg | 236755 | 2022-05-05 17:00:35 |
 g716627ex99p57g1.jpg | 547644 | 2022-05-05 17:00:35 |
 g716627ex99p58g1.jpg | 465791 | 2022-05-05 17:00:35 |
 g716627ex99p59g1.jpg | 423973 | 2022-05-05 17:00:35 |
 g716627ex99p5g1.jpg | 473713 | 2022-05-05 17:00:35 |
 g716627ex99p60g1.jpg | 380158 | 2022-05-05 17:00:35 |
 g716627ex99p61g1.jpg | 407017 | 2022-05-05 17:00:35 |
 g716627ex99p62g1.jpg | 276041 | 2022-05-05 17:00:35 |
 g716627ex99p63g1.jpg | 167314 | 2022-05-05 17:00:35 |
 g716627ex99p6g1.jpg | 402857 | 2022-05-05 17:00:35 |
 g716627ex99p7g1.jpg | 421497 | 2022-05-05 17:00:35 |
 g716627ex99p8g1.jpg | 458994 | 2022-05-05 17:00:35 |
 g716627ex99p9g1.jpg | 215624 | 2022-05-05 17:00:35 |
| MetaLinks.json | 17896 | 2022-05-05 17:00:35 |
| nfg-20220505.xsd | 2878 | 2022-05-05 17:00:35 |
| nfg-20220505_lab.xml | 17236 | 2022-05-05 17:00:35 |
| nfg-20220505_pre.xml | 10828 | 2022-05-05 17:00:35 |
| R1.htm | 38711 | 2022-05-05 17:00:35 |
| report.css | 2767 | 2022-05-05 17:00:35 |
| Show.js | 1085 | 2022-05-05 17:00:35 |