Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000790816-23-000025-index-headers.html | 2023-05-01 13:54:14 | |
| 0000790816-23-000025-index.html | 2023-05-01 13:54:14 | |
| 0000790816-23-000025.txt | 2023-05-01 13:54:14 | |
 0000790816-23-000025-xbrl.zip | 380020 | 2023-05-01 13:54:14 |
| bdn-20230331.htm | 2310458 | 2023-05-01 13:54:14 |
| bdn-20230331.xsd | 72185 | 2023-05-01 13:54:14 |
| bdn-20230331_cal.xml | 113584 | 2023-05-01 13:54:14 |
| bdn-20230331_def.xml | 447487 | 2023-05-01 13:54:14 |
| bdn-20230331_htm.xml | 1658262 | 2023-05-01 13:54:14 |
| bdn-20230331_lab.xml | 760421 | 2023-05-01 13:54:14 |
| bdn-20230331_pre.xml | 633452 | 2023-05-01 13:54:14 |
| bdnex311q12023.htm | 9882 | 2023-05-01 13:54:14 |
| bdnex312q12023.htm | 9886 | 2023-05-01 13:54:14 |
| bdnex313q12023.htm | 10218 | 2023-05-01 13:54:14 |
| bdnex314q12023.htm | 10187 | 2023-05-01 13:54:14 |
| bdnex321q12023.htm | 5023 | 2023-05-01 13:54:14 |
| bdnex322q12023.htm | 5047 | 2023-05-01 13:54:14 |
| bdnex323q12023.htm | 5333 | 2023-05-01 13:54:14 |
| bdnex324q12023.htm | 5357 | 2023-05-01 13:54:14 |
| FilingSummary.xml | 49056 | 2023-05-01 13:54:14 |
| Financial_Report.xlsx | 122731 | 2023-05-01 13:54:14 |
| MetaLinks.json | 865467 | 2023-05-01 13:54:14 |
| R1.htm | 58519 | 2023-05-01 13:54:14 |
| R10.htm | 118380 | 2023-05-01 13:54:14 |
| R11.htm | 16304 | 2023-05-01 13:54:14 |
| R12.htm | 114549 | 2023-05-01 13:54:14 |
| R13.htm | 43489 | 2023-05-01 13:54:14 |
| R14.htm | 53965 | 2023-05-01 13:54:14 |
| R15.htm | 5362 | 2023-05-01 13:54:14 |
| R16.htm | 154531 | 2023-05-01 13:54:14 |
| R17.htm | 4831 | 2023-05-01 13:54:14 |
| R18.htm | 17588 | 2023-05-01 13:54:14 |
| R19.htm | 8840 | 2023-05-01 13:54:14 |
| R2.htm | 124300 | 2023-05-01 13:54:14 |
| R20.htm | 13341 | 2023-05-01 13:54:14 |
| R21.htm | 32271 | 2023-05-01 13:54:14 |
| R22.htm | 12061 | 2023-05-01 13:54:14 |
| R23.htm | 43827 | 2023-05-01 13:54:14 |
| R24.htm | 62752 | 2023-05-01 13:54:14 |
| R25.htm | 24871 | 2023-05-01 13:54:14 |
| R26.htm | 23732 | 2023-05-01 13:54:14 |
| R27.htm | 6933 | 2023-05-01 13:54:14 |
| R28.htm | 30956 | 2023-05-01 13:54:14 |
| R29.htm | 31597 | 2023-05-01 13:54:14 |
| R3.htm | 14008 | 2023-05-01 13:54:14 |
| R30.htm | 43341 | 2023-05-01 13:54:14 |
| R31.htm | 88949 | 2023-05-01 13:54:14 |
| R32.htm | 13470 | 2023-05-01 13:54:14 |
| R33.htm | 11478 | 2023-05-01 13:54:14 |
| R34.htm | 12854 | 2023-05-01 13:54:14 |
| R35.htm | 11163 | 2023-05-01 13:54:14 |
| R36.htm | 30359 | 2023-05-01 13:54:14 |
| R37.htm | 11999 | 2023-05-01 13:54:14 |
| R38.htm | 45435 | 2023-05-01 13:54:14 |
| R39.htm | 56452 | 2023-05-01 13:54:14 |
| R4.htm | 112483 | 2023-05-01 13:54:14 |
| R40.htm | 16951 | 2023-05-01 13:54:14 |
| R41.htm | 21990 | 2023-05-01 13:54:14 |
| R42.htm | 53303 | 2023-05-01 13:54:14 |
| R43.htm | 53298 | 2023-05-01 13:54:14 |
| R44.htm | 34850 | 2023-05-01 13:54:14 |
| R45.htm | 84302 | 2023-05-01 13:54:14 |
| R46.htm | 30084 | 2023-05-01 13:54:14 |
| R47.htm | 16739 | 2023-05-01 13:54:14 |
| R48.htm | 9789 | 2023-05-01 13:54:14 |
| R49.htm | 12323 | 2023-05-01 13:54:14 |
| R5.htm | 39840 | 2023-05-01 13:54:14 |
| R50.htm | 51307 | 2023-05-01 13:54:14 |
| R51.htm | 27759 | 2023-05-01 13:54:14 |
| R52.htm | 39278 | 2023-05-01 13:54:14 |
| R53.htm | 9435 | 2023-05-01 13:54:14 |
| R54.htm | 22628 | 2023-05-01 13:54:14 |
| R55.htm | 31390 | 2023-05-01 13:54:14 |
| R56.htm | 101595 | 2023-05-01 13:54:14 |
| R57.htm | 38024 | 2023-05-01 13:54:14 |
| R58.htm | 29551 | 2023-05-01 13:54:14 |
| R59.htm | 29727 | 2023-05-01 13:54:14 |
| R6.htm | 64364 | 2023-05-01 13:54:14 |
| R60.htm | 13443 | 2023-05-01 13:54:14 |
| R61.htm | 5939 | 2023-05-01 13:54:14 |
| R62.htm | 58555 | 2023-05-01 13:54:14 |
| R63.htm | 21885 | 2023-05-01 13:54:14 |
| R64.htm | 54715 | 2023-05-01 13:54:14 |
| R65.htm | 15036 | 2023-05-01 13:54:14 |
| R66.htm | 72182 | 2023-05-01 13:54:14 |
| R67.htm | 25431 | 2023-05-01 13:54:14 |
| R68.htm | 34857 | 2023-05-01 13:54:14 |
| R69.htm | 4328 | 2023-05-01 13:54:14 |
| R7.htm | 4641 | 2023-05-01 13:54:14 |
| R70.htm | 23281 | 2023-05-01 13:54:14 |
| R71.htm | 35379 | 2023-05-01 13:54:14 |
| R72.htm | 21139 | 2023-05-01 13:54:14 |
| R73.htm | 44555 | 2023-05-01 13:54:14 |
| R74.htm | 33368 | 2023-05-01 13:54:14 |
| R8.htm | 132766 | 2023-05-01 13:54:14 |
| R9.htm | 4624 | 2023-05-01 13:54:14 |
| report.css | 2767 | 2023-05-01 13:54:14 |
| Show.js | 1085 | 2023-05-01 13:54:14 |