Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000934612-21-000005-index-headers.html | 2021-03-01 08:03:31 | |
| 0000934612-21-000005-index.html | 2021-03-01 08:03:31 | |
| 0000934612-21-000005.txt | 2021-03-01 08:03:31 | |
 0000934612-21-000005-xbrl.zip | 1956661 | 2021-03-01 08:03:31 |
| bni-20201231.htm | 1887927 | 2021-03-01 08:03:31 |
| bni-20201231.xsd | 56751 | 2021-03-01 08:03:31 |
| bni-20201231_cal.xml | 99261 | 2021-03-01 08:03:31 |
| bni-20201231_def.xml | 234321 | 2021-03-01 08:03:31 |
 bni-20201231_g1.jpg | 9687 | 2021-03-01 08:03:31 |
 bni-20201231_g2.jpg | 1709976 | 2021-03-01 08:03:31 |
| bni-20201231_htm.xml | 1862471 | 2021-03-01 08:03:31 |
| bni-20201231_lab.xml | 706519 | 2021-03-01 08:03:31 |
| bni-20201231_pre.xml | 440313 | 2021-03-01 08:03:31 |
| FilingSummary.xml | 39833 | 2021-03-01 08:03:31 |
| Financial_Report.xlsx | 105080 | 2021-03-01 08:03:31 |
| llc-123120x10kex231.htm | 3343 | 2021-03-01 08:03:31 |
| llc-123120x10kex241.htm | 10964 | 2021-03-01 08:03:31 |
| llc-123120x10kex311.htm | 11808 | 2021-03-01 08:03:31 |
| llc-123120x10kex312.htm | 11820 | 2021-03-01 08:03:31 |
| llc-123120x10kex32.htm | 68766 | 2021-03-01 08:03:31 |
| llc-123120x10kex321.htm | 7688 | 2021-03-01 08:03:31 |
| llc-123120x10kex459.htm | 3262 | 2021-03-01 08:03:31 |
| MetaLinks.json | 707287 | 2021-03-01 08:03:31 |
| R1.htm | 55994 | 2021-03-01 08:03:31 |
| R10.htm | 27687 | 2021-03-01 08:03:31 |
| R11.htm | 72297 | 2021-03-01 08:03:31 |
| R12.htm | 4970 | 2021-03-01 08:03:31 |
| R13.htm | 26290 | 2021-03-01 08:03:31 |
| R14.htm | 5031 | 2021-03-01 08:03:31 |
| R15.htm | 67136 | 2021-03-01 08:03:31 |
| R16.htm | 21084 | 2021-03-01 08:03:31 |
| R17.htm | 66267 | 2021-03-01 08:03:31 |
| R18.htm | 46812 | 2021-03-01 08:03:31 |
| R19.htm | 169883 | 2021-03-01 08:03:31 |
| R2.htm | 46723 | 2021-03-01 08:03:31 |
| R20.htm | 15224 | 2021-03-01 08:03:31 |
| R21.htm | 45472 | 2021-03-01 08:03:31 |
| R22.htm | 28541 | 2021-03-01 08:03:31 |
| R23.htm | 70535 | 2021-03-01 08:03:31 |
| R24.htm | 23307 | 2021-03-01 08:03:31 |
| R25.htm | 73469 | 2021-03-01 08:03:31 |
| R26.htm | 24702 | 2021-03-01 08:03:31 |
| R27.htm | 86690 | 2021-03-01 08:03:31 |
| R28.htm | 21053 | 2021-03-01 08:03:31 |
| R29.htm | 58674 | 2021-03-01 08:03:31 |
| R3.htm | 25227 | 2021-03-01 08:03:31 |
| R30.htm | 35215 | 2021-03-01 08:03:31 |
| R31.htm | 174080 | 2021-03-01 08:03:31 |
| R32.htm | 11566 | 2021-03-01 08:03:31 |
| R33.htm | 44023 | 2021-03-01 08:03:31 |
| R34.htm | 28402 | 2021-03-01 08:03:31 |
| R35.htm | 24765 | 2021-03-01 08:03:31 |
| R36.htm | 36125 | 2021-03-01 08:03:31 |
| R37.htm | 24910 | 2021-03-01 08:03:31 |
| R38.htm | 12201 | 2021-03-01 08:03:31 |
| R39.htm | 24447 | 2021-03-01 08:03:31 |
| R4.htm | 78590 | 2021-03-01 08:03:31 |
| R40.htm | 9215 | 2021-03-01 08:03:31 |
| R41.htm | 16196 | 2021-03-01 08:03:31 |
| R42.htm | 5153 | 2021-03-01 08:03:31 |
| R43.htm | 46998 | 2021-03-01 08:03:31 |
| R44.htm | 10826 | 2021-03-01 08:03:31 |
| R45.htm | 13909 | 2021-03-01 08:03:31 |
| R46.htm | 21236 | 2021-03-01 08:03:31 |
| R47.htm | 11425 | 2021-03-01 08:03:31 |
| R48.htm | 11588 | 2021-03-01 08:03:31 |
| R49.htm | 44283 | 2021-03-01 08:03:31 |
| R5.htm | 78254 | 2021-03-01 08:03:31 |
| R50.htm | 26253 | 2021-03-01 08:03:31 |
| R51.htm | 24742 | 2021-03-01 08:03:31 |
| R52.htm | 46376 | 2021-03-01 08:03:31 |
| R53.htm | 36390 | 2021-03-01 08:03:31 |
| R54.htm | 21657 | 2021-03-01 08:03:31 |
| R55.htm | 19650 | 2021-03-01 08:03:31 |
| R56.htm | 23395 | 2021-03-01 08:03:31 |
| R57.htm | 10791 | 2021-03-01 08:03:31 |
| R58.htm | 41058 | 2021-03-01 08:03:31 |
| R59.htm | 27582 | 2021-03-01 08:03:31 |
| R6.htm | 23072 | 2021-03-01 08:03:31 |
| R60.htm | 30878 | 2021-03-01 08:03:31 |
| R61.htm | 11556 | 2021-03-01 08:03:31 |
| R62.htm | 25301 | 2021-03-01 08:03:31 |
| R63.htm | 29261 | 2021-03-01 08:03:31 |
| R64.htm | 49875 | 2021-03-01 08:03:31 |
| R65.htm | 15670 | 2021-03-01 08:03:31 |
| R66.htm | 16664 | 2021-03-01 08:03:31 |
| R67.htm | 25358 | 2021-03-01 08:03:31 |
| R68.htm | 56120 | 2021-03-01 08:03:31 |
| R69.htm | 21095 | 2021-03-01 08:03:31 |
| R7.htm | 7475 | 2021-03-01 08:03:31 |
| R8.htm | 34211 | 2021-03-01 08:03:31 |
| R9.htm | 14137 | 2021-03-01 08:03:31 |
| report.css | 2767 | 2021-03-01 08:03:31 |
| Show.js | 1085 | 2021-03-01 08:03:31 |