Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001061630-23-000041-index-headers.html | 2023-07-26 06:44:54 | |
| 0001061630-23-000041-index.html | 2023-07-26 06:44:54 | |
| 0001061630-23-000041.txt | 2023-07-26 06:44:54 | |
 0001061630-23-000041-xbrl.zip | 777297 | 2023-07-26 06:44:54 |
| bxmt-20230630.htm | 3741631 | 2023-07-26 06:44:54 |
| bxmt-20230630.xsd | 112211 | 2023-07-26 06:44:54 |
| bxmt-20230630_cal.xml | 84526 | 2023-07-26 06:44:54 |
| bxmt-20230630_def.xml | 583106 | 2023-07-26 06:44:54 |
 bxmt-20230630_g1.gif | 7295 | 2023-07-26 06:44:54 |
 bxmt-20230630_g2.jpg | 64964 | 2023-07-26 06:44:54 |
 bxmt-20230630_g3.jpg | 57830 | 2023-07-26 06:44:54 |
| bxmt-20230630_htm.xml | 3427732 | 2023-07-26 06:44:54 |
| bxmt-20230630_lab.xml | 1083223 | 2023-07-26 06:44:54 |
| bxmt-20230630_pre.xml | 820439 | 2023-07-26 06:44:54 |
| exhibit101.htm | 46878 | 2023-07-26 06:44:54 |
| exhibit102.htm | 1857948 | 2023-07-26 06:44:54 |
| exhibit311.htm | 8513 | 2023-07-26 06:44:54 |
| exhibit312.htm | 8230 | 2023-07-26 06:44:54 |
| exhibit321.htm | 4852 | 2023-07-26 06:44:54 |
| exhibit322.htm | 4831 | 2023-07-26 06:44:54 |
| exhibit991.htm | 4567 | 2023-07-26 06:44:54 |
| FilingSummary.xml | 64136 | 2023-07-26 06:44:54 |
| Financial_Report.xlsx | 203242 | 2023-07-26 06:44:54 |
 image_0.jpg | 2493 | 2023-07-26 06:44:54 |
| MetaLinks.json | 1195822 | 2023-07-26 06:44:54 |
| R1.htm | 53095 | 2023-07-26 06:44:54 |
| R10.htm | 61733 | 2023-07-26 06:44:54 |
| R11.htm | 494202 | 2023-07-26 06:44:54 |
| R12.htm | 70120 | 2023-07-26 06:44:54 |
| R13.htm | 106966 | 2023-07-26 06:44:54 |
| R14.htm | 65508 | 2023-07-26 06:44:54 |
| R15.htm | 24895 | 2023-07-26 06:44:54 |
| R16.htm | 25799 | 2023-07-26 06:44:54 |
| R17.htm | 22882 | 2023-07-26 06:44:54 |
| R18.htm | 17180 | 2023-07-26 06:44:54 |
| R19.htm | 30379 | 2023-07-26 06:44:54 |
| R2.htm | 95460 | 2023-07-26 06:44:54 |
| R20.htm | 124719 | 2023-07-26 06:44:54 |
| R21.htm | 80394 | 2023-07-26 06:44:54 |
| R22.htm | 27688 | 2023-07-26 06:44:54 |
| R23.htm | 12467 | 2023-07-26 06:44:54 |
| R24.htm | 15368 | 2023-07-26 06:44:54 |
| R25.htm | 62649 | 2023-07-26 06:44:54 |
| R26.htm | 17460 | 2023-07-26 06:44:54 |
| R27.htm | 11503 | 2023-07-26 06:44:54 |
| R28.htm | 39303 | 2023-07-26 06:44:54 |
| R29.htm | 15388 | 2023-07-26 06:44:54 |
| R3.htm | 29955 | 2023-07-26 06:44:54 |
| R30.htm | 8480 | 2023-07-26 06:44:54 |
| R31.htm | 102115 | 2023-07-26 06:44:54 |
| R32.htm | 496511 | 2023-07-26 06:44:54 |
| R33.htm | 71098 | 2023-07-26 06:44:54 |
| R34.htm | 126931 | 2023-07-26 06:44:54 |
| R35.htm | 65127 | 2023-07-26 06:44:54 |
| R36.htm | 25563 | 2023-07-26 06:44:54 |
| R37.htm | 25267 | 2023-07-26 06:44:54 |
| R38.htm | 58265 | 2023-07-26 06:44:54 |
| R39.htm | 28435 | 2023-07-26 06:44:54 |
| R4.htm | 80481 | 2023-07-26 06:44:54 |
| R40.htm | 37934 | 2023-07-26 06:44:54 |
| R41.htm | 128073 | 2023-07-26 06:44:54 |
| R42.htm | 69002 | 2023-07-26 06:44:54 |
| R43.htm | 24259 | 2023-07-26 06:44:54 |
| R44.htm | 11923 | 2023-07-26 06:44:54 |
| R45.htm | 62197 | 2023-07-26 06:44:54 |
| R46.htm | 19516 | 2023-07-26 06:44:54 |
| R47.htm | 35113 | 2023-07-26 06:44:54 |
| R48.htm | 37053 | 2023-07-26 06:44:54 |
| R49.htm | 29921 | 2023-07-26 06:44:54 |
| R5.htm | 38309 | 2023-07-26 06:44:54 |
| R50.htm | 44832 | 2023-07-26 06:44:54 |
| R51.htm | 37008 | 2023-07-26 06:44:54 |
| R52.htm | 120118 | 2023-07-26 06:44:54 |
| R53.htm | 41991 | 2023-07-26 06:44:54 |
| R54.htm | 77959 | 2023-07-26 06:44:54 |
| R55.htm | 21182 | 2023-07-26 06:44:54 |
| R56.htm | 187918 | 2023-07-26 06:44:54 |
| R57.htm | 24639 | 2023-07-26 06:44:54 |
| R58.htm | 30362 | 2023-07-26 06:44:54 |
| R59.htm | 7616 | 2023-07-26 06:44:54 |
| R6.htm | 88268 | 2023-07-26 06:44:54 |
| R60.htm | 34004 | 2023-07-26 06:44:54 |
| R61.htm | 53681 | 2023-07-26 06:44:54 |
| R62.htm | 23807 | 2023-07-26 06:44:54 |
| R63.htm | 39575 | 2023-07-26 06:44:54 |
| R64.htm | 32435 | 2023-07-26 06:44:54 |
| R65.htm | 53500 | 2023-07-26 06:44:54 |
| R66.htm | 18766 | 2023-07-26 06:44:54 |
| R67.htm | 24580 | 2023-07-26 06:44:54 |
| R68.htm | 28582 | 2023-07-26 06:44:54 |
| R69.htm | 31117 | 2023-07-26 06:44:54 |
| R7.htm | 5069 | 2023-07-26 06:44:54 |
| R70.htm | 19420 | 2023-07-26 06:44:54 |
| R71.htm | 20562 | 2023-07-26 06:44:54 |
| R72.htm | 22649 | 2023-07-26 06:44:54 |
| R73.htm | 21831 | 2023-07-26 06:44:54 |
| R74.htm | 19979 | 2023-07-26 06:44:54 |
| R75.htm | 26417 | 2023-07-26 06:44:54 |
| R76.htm | 19453 | 2023-07-26 06:44:54 |
| R77.htm | 21087 | 2023-07-26 06:44:54 |
| R78.htm | 41937 | 2023-07-26 06:44:54 |
| R79.htm | 25659 | 2023-07-26 06:44:54 |
| R8.htm | 106561 | 2023-07-26 06:44:54 |
| R80.htm | 15777 | 2023-07-26 06:44:54 |
| R81.htm | 17115 | 2023-07-26 06:44:54 |
| R82.htm | 32787 | 2023-07-26 06:44:54 |
| R83.htm | 17283 | 2023-07-26 06:44:54 |
| R84.htm | 9967 | 2023-07-26 06:44:54 |
| R85.htm | 70735 | 2023-07-26 06:44:54 |
| R86.htm | 24081 | 2023-07-26 06:44:54 |
| R87.htm | 19246 | 2023-07-26 06:44:54 |
| R88.htm | 47473 | 2023-07-26 06:44:54 |
| R89.htm | 21560 | 2023-07-26 06:44:54 |
| R9.htm | 7522 | 2023-07-26 06:44:54 |
| R90.htm | 23938 | 2023-07-26 06:44:54 |
| R91.htm | 14312 | 2023-07-26 06:44:54 |
| R92.htm | 42564 | 2023-07-26 06:44:54 |
| R93.htm | 20498 | 2023-07-26 06:44:54 |
| R94.htm | 31777 | 2023-07-26 06:44:54 |
| R95.htm | 46942 | 2023-07-26 06:44:54 |
| R96.htm | 43550 | 2023-07-26 06:44:54 |
| R97.htm | 45004 | 2023-07-26 06:44:54 |
| R98.htm | 33779 | 2023-07-26 06:44:54 |
| R99.htm | 55942 | 2023-07-26 06:44:54 |
| R9999.htm | 22717 | 2023-07-26 06:44:54 |
| report.css | 2768 | 2023-07-26 06:44:54 |
| Show.js | 1086 | 2023-07-26 06:44:54 |