Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000078890-20-000087-index-headers.html | 2020-10-29 15:46:27 | |
| 0000078890-20-000087-index.html | 2020-10-29 15:46:27 | |
| 0000078890-20-000087.txt | 2020-10-29 15:46:27 | |
 0000078890-20-000087-xbrl.zip | 430168 | 2020-10-29 15:46:27 |
| bco-20200930.htm | 3449069 | 2020-10-29 15:46:27 |
| bco-20200930.xsd | 46348 | 2020-10-29 15:46:27 |
| bco-20200930_cal.xml | 113329 | 2020-10-29 15:46:27 |
| bco-20200930_def.xml | 362202 | 2020-10-29 15:46:27 |
| bco-20200930_htm.xml | 2913487 | 2020-10-29 15:46:27 |
| bco-20200930_lab.xml | 807290 | 2020-10-29 15:46:27 |
| bco-20200930_pre.xml | 536247 | 2020-10-29 15:46:27 |
| ex101q32020.htm | 209386 | 2020-10-29 15:46:27 |
| ex311q32020.htm | 9175 | 2020-10-29 15:46:27 |
| ex312q32020.htm | 9471 | 2020-10-29 15:46:27 |
| ex321q32020.htm | 5551 | 2020-10-29 15:46:27 |
| ex322q32020.htm | 5756 | 2020-10-29 15:46:27 |
| FilingSummary.xml | 36282 | 2020-10-29 15:46:27 |
| Financial_Report.xlsx | 119787 | 2020-10-29 15:46:27 |
 image_01.jpg | 3572 | 2020-10-29 15:46:27 |
| MetaLinks.json | 716337 | 2020-10-29 15:46:27 |
| R1.htm | 52235 | 2020-10-29 15:46:27 |
| R10.htm | 88720 | 2020-10-29 15:46:27 |
| R11.htm | 93564 | 2020-10-29 15:46:27 |
| R12.htm | 104672 | 2020-10-29 15:46:27 |
| R13.htm | 14950 | 2020-10-29 15:46:27 |
| R14.htm | 97630 | 2020-10-29 15:46:27 |
| R15.htm | 180724 | 2020-10-29 15:46:27 |
| R16.htm | 46511 | 2020-10-29 15:46:27 |
| R17.htm | 38589 | 2020-10-29 15:46:27 |
| R18.htm | 12058 | 2020-10-29 15:46:27 |
| R19.htm | 75573 | 2020-10-29 15:46:27 |
| R2.htm | 96790 | 2020-10-29 15:46:27 |
| R20.htm | 25331 | 2020-10-29 15:46:27 |
| R21.htm | 20002 | 2020-10-29 15:46:27 |
| R22.htm | 5863 | 2020-10-29 15:46:27 |
| R23.htm | 18435 | 2020-10-29 15:46:27 |
| R24.htm | 36327 | 2020-10-29 15:46:27 |
| R25.htm | 14396 | 2020-10-29 15:46:27 |
| R26.htm | 76700 | 2020-10-29 15:46:27 |
| R27.htm | 92297 | 2020-10-29 15:46:27 |
| R28.htm | 104705 | 2020-10-29 15:46:27 |
| R29.htm | 13681 | 2020-10-29 15:46:27 |
| R3.htm | 10735 | 2020-10-29 15:46:27 |
| R30.htm | 89159 | 2020-10-29 15:46:27 |
| R31.htm | 182068 | 2020-10-29 15:46:27 |
| R32.htm | 45942 | 2020-10-29 15:46:27 |
| R33.htm | 28475 | 2020-10-29 15:46:27 |
| R34.htm | 10120 | 2020-10-29 15:46:27 |
| R35.htm | 72753 | 2020-10-29 15:46:27 |
| R36.htm | 19954 | 2020-10-29 15:46:27 |
| R37.htm | 16329 | 2020-10-29 15:46:27 |
| R38.htm | 17991 | 2020-10-29 15:46:27 |
| R39.htm | 93887 | 2020-10-29 15:46:27 |
| R4.htm | 92462 | 2020-10-29 15:46:27 |
| R40.htm | 52460 | 2020-10-29 15:46:27 |
| R41.htm | 21887 | 2020-10-29 15:46:27 |
| R42.htm | 49472 | 2020-10-29 15:46:27 |
| R43.htm | 15362 | 2020-10-29 15:46:27 |
| R44.htm | 46357 | 2020-10-29 15:46:27 |
| R45.htm | 8008 | 2020-10-29 15:46:27 |
| R46.htm | 138355 | 2020-10-29 15:46:27 |
| R47.htm | 29589 | 2020-10-29 15:46:27 |
| R48.htm | 14293 | 2020-10-29 15:46:27 |
| R49.htm | 85594 | 2020-10-29 15:46:27 |
| R5.htm | 41476 | 2020-10-29 15:46:27 |
| R50.htm | 36165 | 2020-10-29 15:46:27 |
| R51.htm | 92800 | 2020-10-29 15:46:27 |
| R52.htm | 46686 | 2020-10-29 15:46:27 |
| R53.htm | 82386 | 2020-10-29 15:46:27 |
| R54.htm | 24468 | 2020-10-29 15:46:27 |
| R55.htm | 23428 | 2020-10-29 15:46:27 |
| R56.htm | 46727 | 2020-10-29 15:46:27 |
| R57.htm | 29320 | 2020-10-29 15:46:27 |
| R58.htm | 44177 | 2020-10-29 15:46:27 |
| R59.htm | 14331 | 2020-10-29 15:46:27 |
| R6.htm | 99371 | 2020-10-29 15:46:27 |
| R60.htm | 31842 | 2020-10-29 15:46:27 |
| R61.htm | 37219 | 2020-10-29 15:46:27 |
| R7.htm | 4916 | 2020-10-29 15:46:27 |
| R8.htm | 112276 | 2020-10-29 15:46:27 |
| R9.htm | 29729 | 2020-10-29 15:46:27 |
| report.css | 2767 | 2020-10-29 15:46:27 |
| Show.js | 1085 | 2020-10-29 15:46:27 |