Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-22-004755-index-headers.html | 2022-02-11 14:19:54 | |
| 0001564590-22-004755-index.html | 2022-02-11 14:19:54 | |
| 0001564590-22-004755.txt | 2022-02-11 14:19:54 | |
 0001564590-22-004755-xbrl.zip | 1244760 | 2022-02-11 14:19:54 |
| FilingSummary.xml | 64153 | 2022-02-11 14:19:54 |
| Financial_Report.xlsx | 151824 | 2022-02-11 14:19:54 |
 gecdrnxqqvdj000001.jpg | 3496 | 2022-02-11 14:19:54 |
 gecdrnxqqvdj000002.jpg | 514090 | 2022-02-11 14:19:54 |
 gecdrnxqqvdj000003.jpg | 546373 | 2022-02-11 14:19:54 |
| MetaLinks.json | 1176088 | 2022-02-11 14:19:54 |
| nov-10k_20211231.htm | 6384765 | 2022-02-11 14:19:54 |
| nov-10k_20211231_htm.xml | 6757142 | 2022-02-11 14:19:54 |
| nov-20211231.xsd | 93724 | 2022-02-11 14:19:54 |
| nov-20211231_cal.xml | 107163 | 2022-02-11 14:19:54 |
| nov-20211231_def.xml | 340786 | 2022-02-11 14:19:54 |
| nov-20211231_lab.xml | 811182 | 2022-02-11 14:19:54 |
| nov-20211231_pre.xml | 641433 | 2022-02-11 14:19:54 |
| nov-ex211_10.htm | 341294 | 2022-02-11 14:19:54 |
| nov-ex231_13.htm | 21487 | 2022-02-11 14:19:54 |
| nov-ex311_7.htm | 9800 | 2022-02-11 14:19:54 |
| nov-ex312_12.htm | 9895 | 2022-02-11 14:19:54 |
| nov-ex321_11.htm | 5040 | 2022-02-11 14:19:54 |
| nov-ex322_9.htm | 5039 | 2022-02-11 14:19:54 |
| nov-ex95_8.htm | 112403 | 2022-02-11 14:19:54 |
| R1.htm | 68753 | 2022-02-11 14:19:54 |
| R10.htm | 111467 | 2022-02-11 14:19:54 |
| R11.htm | 170706 | 2022-02-11 14:19:54 |
| R12.htm | 31902 | 2022-02-11 14:19:54 |
| R13.htm | 43056 | 2022-02-11 14:19:54 |
| R14.htm | 219947 | 2022-02-11 14:19:54 |
| R15.htm | 45403 | 2022-02-11 14:19:54 |
| R16.htm | 177909 | 2022-02-11 14:19:54 |
| R17.htm | 63043 | 2022-02-11 14:19:54 |
| R18.htm | 338138 | 2022-02-11 14:19:54 |
| R19.htm | 217307 | 2022-02-11 14:19:54 |
| R2.htm | 130403 | 2022-02-11 14:19:54 |
| R20.htm | 19198 | 2022-02-11 14:19:54 |
| R21.htm | 395941 | 2022-02-11 14:19:54 |
| R22.htm | 341197 | 2022-02-11 14:19:54 |
| R23.htm | 317931 | 2022-02-11 14:19:54 |
| R24.htm | 321018 | 2022-02-11 14:19:54 |
| R25.htm | 145770 | 2022-02-11 14:19:54 |
| R26.htm | 154302 | 2022-02-11 14:19:54 |
| R27.htm | 80748 | 2022-02-11 14:19:54 |
| R28.htm | 166990 | 2022-02-11 14:19:54 |
| R29.htm | 32465 | 2022-02-11 14:19:54 |
| R3.htm | 10738 | 2022-02-11 14:19:54 |
| R30.htm | 42263 | 2022-02-11 14:19:54 |
| R31.htm | 214203 | 2022-02-11 14:19:54 |
| R32.htm | 44699 | 2022-02-11 14:19:54 |
| R33.htm | 180246 | 2022-02-11 14:19:54 |
| R34.htm | 55305 | 2022-02-11 14:19:54 |
| R35.htm | 336232 | 2022-02-11 14:19:54 |
| R36.htm | 216213 | 2022-02-11 14:19:54 |
| R37.htm | 386114 | 2022-02-11 14:19:54 |
| R38.htm | 334996 | 2022-02-11 14:19:54 |
| R39.htm | 319618 | 2022-02-11 14:19:54 |
| R4.htm | 110729 | 2022-02-11 14:19:54 |
| R40.htm | 314264 | 2022-02-11 14:19:54 |
| R41.htm | 70991 | 2022-02-11 14:19:54 |
| R42.htm | 11681 | 2022-02-11 14:19:54 |
| R43.htm | 10873 | 2022-02-11 14:19:54 |
| R44.htm | 39344 | 2022-02-11 14:19:54 |
| R45.htm | 13538 | 2022-02-11 14:19:54 |
| R46.htm | 13357 | 2022-02-11 14:19:54 |
| R47.htm | 23822 | 2022-02-11 14:19:54 |
| R48.htm | 16606 | 2022-02-11 14:19:54 |
| R49.htm | 22273 | 2022-02-11 14:19:54 |
| R5.htm | 35438 | 2022-02-11 14:19:54 |
| R50.htm | 42584 | 2022-02-11 14:19:54 |
| R51.htm | 22742 | 2022-02-11 14:19:54 |
| R52.htm | 4801 | 2022-02-11 14:19:54 |
| R53.htm | 23803 | 2022-02-11 14:19:54 |
| R54.htm | 23227 | 2022-02-11 14:19:54 |
| R55.htm | 26363 | 2022-02-11 14:19:54 |
| R56.htm | 4315 | 2022-02-11 14:19:54 |
| R57.htm | 15009 | 2022-02-11 14:19:54 |
| R58.htm | 16089 | 2022-02-11 14:19:54 |
| R59.htm | 24654 | 2022-02-11 14:19:54 |
| R6.htm | 101233 | 2022-02-11 14:19:54 |
| R60.htm | 44531 | 2022-02-11 14:19:54 |
| R61.htm | 21854 | 2022-02-11 14:19:54 |
| R62.htm | 17867 | 2022-02-11 14:19:54 |
| R63.htm | 23096 | 2022-02-11 14:19:54 |
| R64.htm | 80806 | 2022-02-11 14:19:54 |
| R65.htm | 18603 | 2022-02-11 14:19:54 |
| R66.htm | 53015 | 2022-02-11 14:19:54 |
| R67.htm | 13849 | 2022-02-11 14:19:54 |
| R68.htm | 20838 | 2022-02-11 14:19:54 |
| R69.htm | 22866 | 2022-02-11 14:19:54 |
| R7.htm | 87006 | 2022-02-11 14:19:54 |
| R70.htm | 16294 | 2022-02-11 14:19:54 |
| R71.htm | 34088 | 2022-02-11 14:19:54 |
| R72.htm | 39297 | 2022-02-11 14:19:54 |
| R73.htm | 10850 | 2022-02-11 14:19:54 |
| R74.htm | 113725 | 2022-02-11 14:19:54 |
| R75.htm | 26125 | 2022-02-11 14:19:54 |
| R76.htm | 32619 | 2022-02-11 14:19:54 |
| R77.htm | 12300 | 2022-02-11 14:19:54 |
| R78.htm | 30944 | 2022-02-11 14:19:54 |
| R79.htm | 22537 | 2022-02-11 14:19:54 |
| R8.htm | 4474 | 2022-02-11 14:19:54 |
| R80.htm | 24655 | 2022-02-11 14:19:54 |
| R81.htm | 54659 | 2022-02-11 14:19:54 |
| R82.htm | 16632 | 2022-02-11 14:19:54 |
| R83.htm | 22467 | 2022-02-11 14:19:54 |
| R84.htm | 11028 | 2022-02-11 14:19:54 |
| R85.htm | 30020 | 2022-02-11 14:19:54 |
| R86.htm | 31349 | 2022-02-11 14:19:54 |
| R87.htm | 42268 | 2022-02-11 14:19:54 |
| R88.htm | 35772 | 2022-02-11 14:19:54 |
| R89.htm | 13630 | 2022-02-11 14:19:54 |
| R9.htm | 7403 | 2022-02-11 14:19:54 |
| R90.htm | 26356 | 2022-02-11 14:19:54 |
| R91.htm | 4392 | 2022-02-11 14:19:54 |
| R92.htm | 31588 | 2022-02-11 14:19:54 |
| R93.htm | 29823 | 2022-02-11 14:19:54 |
| R94.htm | 47376 | 2022-02-11 14:19:54 |
| R95.htm | 23108 | 2022-02-11 14:19:54 |
| R96.htm | 24590 | 2022-02-11 14:19:54 |
| report.css | 2768 | 2022-02-11 14:19:54 |
| Show.js | 1086 | 2022-02-11 14:19:54 |