Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001061630-23-000010-index-headers.html | 2023-02-08 06:47:19 | |
| 0001061630-23-000010-index.html | 2023-02-08 06:47:19 | |
| 0001061630-23-000010.txt | 2023-02-08 06:47:19 | |
 0001061630-23-000010-xbrl.zip | 1144605 | 2023-02-08 06:47:19 |
| bxmt-20221231.htm | 5354632 | 2023-02-08 06:47:19 |
| bxmt-20221231.xsd | 126976 | 2023-02-08 06:47:19 |
| bxmt-20221231_cal.xml | 85613 | 2023-02-08 06:47:19 |
| bxmt-20221231_def.xml | 683936 | 2023-02-08 06:47:19 |
 bxmt-20221231_g1.gif | 7295 | 2023-02-08 06:47:19 |
 bxmt-20221231_g2.jpg | 146498 | 2023-02-08 06:47:19 |
 bxmt-20221231_g3.jpg | 90030 | 2023-02-08 06:47:19 |
| bxmt-20221231_htm.xml | 4228551 | 2023-02-08 06:47:19 |
| bxmt-20221231_lab.xml | 1126331 | 2023-02-08 06:47:19 |
| bxmt-20221231_pre.xml | 890076 | 2023-02-08 06:47:19 |
| exhibit1053.htm | 1812202 | 2023-02-08 06:47:19 |
| exhibit1057.htm | 26789 | 2023-02-08 06:47:19 |
| exhibit1061.htm | 76148 | 2023-02-08 06:47:19 |
| exhibit211.htm | 111840 | 2023-02-08 06:47:19 |
| exhibit231.htm | 2552 | 2023-02-08 06:47:19 |
| exhibit311.htm | 8599 | 2023-02-08 06:47:19 |
| exhibit312.htm | 8317 | 2023-02-08 06:47:19 |
| exhibit321.htm | 4950 | 2023-02-08 06:47:19 |
| exhibit322.htm | 4919 | 2023-02-08 06:47:19 |
| exhibit41.htm | 82263 | 2023-02-08 06:47:19 |
| FilingSummary.xml | 67123 | 2023-02-08 06:47:19 |
| Financial_Report.xlsx | 216335 | 2023-02-08 06:47:19 |
 image_0.jpg | 2493 | 2023-02-08 06:47:19 |
| MetaLinks.json | 1181733 | 2023-02-08 06:47:19 |
| R1.htm | 64122 | 2023-02-08 06:47:19 |
| R10.htm | 7365 | 2023-02-08 06:47:19 |
| R100.htm | 33797 | 2023-02-08 06:47:19 |
| R101.htm | 49669 | 2023-02-08 06:47:19 |
| R102.htm | 102211 | 2023-02-08 06:47:19 |
| R103.htm | 18025 | 2023-02-08 06:47:19 |
| R104.htm | 25217 | 2023-02-08 06:47:19 |
| R11.htm | 69887 | 2023-02-08 06:47:19 |
| R12.htm | 438667 | 2023-02-08 06:47:19 |
| R13.htm | 70749 | 2023-02-08 06:47:19 |
| R14.htm | 103027 | 2023-02-08 06:47:19 |
| R15.htm | 63937 | 2023-02-08 06:47:19 |
| R16.htm | 24598 | 2023-02-08 06:47:19 |
| R17.htm | 18202 | 2023-02-08 06:47:19 |
| R18.htm | 22036 | 2023-02-08 06:47:19 |
| R19.htm | 16695 | 2023-02-08 06:47:19 |
| R2.htm | 7838 | 2023-02-08 06:47:19 |
| R20.htm | 31413 | 2023-02-08 06:47:19 |
| R21.htm | 102333 | 2023-02-08 06:47:19 |
| R22.htm | 72913 | 2023-02-08 06:47:19 |
| R23.htm | 24376 | 2023-02-08 06:47:19 |
| R24.htm | 11814 | 2023-02-08 06:47:19 |
| R25.htm | 18970 | 2023-02-08 06:47:19 |
| R26.htm | 64740 | 2023-02-08 06:47:19 |
| R27.htm | 19111 | 2023-02-08 06:47:19 |
| R28.htm | 20077 | 2023-02-08 06:47:19 |
| R29.htm | 37939 | 2023-02-08 06:47:19 |
| R3.htm | 89214 | 2023-02-08 06:47:19 |
| R30.htm | 89522 | 2023-02-08 06:47:19 |
| R31.htm | 108836 | 2023-02-08 06:47:19 |
| R32.htm | 441114 | 2023-02-08 06:47:19 |
| R33.htm | 73538 | 2023-02-08 06:47:19 |
| R34.htm | 120787 | 2023-02-08 06:47:19 |
| R35.htm | 63475 | 2023-02-08 06:47:19 |
| R36.htm | 25304 | 2023-02-08 06:47:19 |
| R37.htm | 17334 | 2023-02-08 06:47:19 |
| R38.htm | 55390 | 2023-02-08 06:47:19 |
| R39.htm | 28113 | 2023-02-08 06:47:19 |
| R4.htm | 28229 | 2023-02-08 06:47:19 |
| R40.htm | 37077 | 2023-02-08 06:47:19 |
| R41.htm | 105675 | 2023-02-08 06:47:19 |
| R42.htm | 67156 | 2023-02-08 06:47:19 |
| R43.htm | 20818 | 2023-02-08 06:47:19 |
| R44.htm | 15285 | 2023-02-08 06:47:19 |
| R45.htm | 63703 | 2023-02-08 06:47:19 |
| R46.htm | 19492 | 2023-02-08 06:47:19 |
| R47.htm | 33617 | 2023-02-08 06:47:19 |
| R48.htm | 67998 | 2023-02-08 06:47:19 |
| R49.htm | 31574 | 2023-02-08 06:47:19 |
| R5.htm | 73971 | 2023-02-08 06:47:19 |
| R50.htm | 43926 | 2023-02-08 06:47:19 |
| R51.htm | 42347 | 2023-02-08 06:47:19 |
| R52.htm | 86424 | 2023-02-08 06:47:19 |
| R53.htm | 33387 | 2023-02-08 06:47:19 |
| R54.htm | 61488 | 2023-02-08 06:47:19 |
| R55.htm | 23005 | 2023-02-08 06:47:19 |
| R56.htm | 152139 | 2023-02-08 06:47:19 |
| R57.htm | 29668 | 2023-02-08 06:47:19 |
| R58.htm | 7554 | 2023-02-08 06:47:19 |
| R59.htm | 7219 | 2023-02-08 06:47:19 |
| R6.htm | 37380 | 2023-02-08 06:47:19 |
| R60.htm | 23407 | 2023-02-08 06:47:19 |
| R61.htm | 29843 | 2023-02-08 06:47:19 |
| R62.htm | 48069 | 2023-02-08 06:47:19 |
| R63.htm | 17436 | 2023-02-08 06:47:19 |
| R64.htm | 39628 | 2023-02-08 06:47:19 |
| R65.htm | 32496 | 2023-02-08 06:47:19 |
| R66.htm | 43432 | 2023-02-08 06:47:19 |
| R67.htm | 18714 | 2023-02-08 06:47:19 |
| R68.htm | 21765 | 2023-02-08 06:47:19 |
| R69.htm | 32082 | 2023-02-08 06:47:19 |
| R7.htm | 90673 | 2023-02-08 06:47:19 |
| R70.htm | 20425 | 2023-02-08 06:47:19 |
| R71.htm | 12789 | 2023-02-08 06:47:19 |
| R72.htm | 13908 | 2023-02-08 06:47:19 |
| R73.htm | 15583 | 2023-02-08 06:47:19 |
| R74.htm | 15460 | 2023-02-08 06:47:19 |
| R75.htm | 39022 | 2023-02-08 06:47:19 |
| R76.htm | 26221 | 2023-02-08 06:47:19 |
| R77.htm | 13136 | 2023-02-08 06:47:19 |
| R78.htm | 14088 | 2023-02-08 06:47:19 |
| R79.htm | 39046 | 2023-02-08 06:47:19 |
| R8.htm | 4636 | 2023-02-08 06:47:19 |
| R80.htm | 34233 | 2023-02-08 06:47:19 |
| R81.htm | 14890 | 2023-02-08 06:47:19 |
| R82.htm | 14542 | 2023-02-08 06:47:19 |
| R83.htm | 23169 | 2023-02-08 06:47:19 |
| R84.htm | 4616 | 2023-02-08 06:47:19 |
| R85.htm | 62862 | 2023-02-08 06:47:19 |
| R86.htm | 27717 | 2023-02-08 06:47:19 |
| R87.htm | 23508 | 2023-02-08 06:47:19 |
| R88.htm | 9762 | 2023-02-08 06:47:19 |
| R89.htm | 32834 | 2023-02-08 06:47:19 |
| R9.htm | 116716 | 2023-02-08 06:47:19 |
| R90.htm | 23370 | 2023-02-08 06:47:19 |
| R91.htm | 22595 | 2023-02-08 06:47:19 |
| R92.htm | 13370 | 2023-02-08 06:47:19 |
| R93.htm | 36017 | 2023-02-08 06:47:19 |
| R94.htm | 26086 | 2023-02-08 06:47:19 |
| R95.htm | 20226 | 2023-02-08 06:47:19 |
| R96.htm | 50292 | 2023-02-08 06:47:19 |
| R97.htm | 38896 | 2023-02-08 06:47:19 |
| R98.htm | 8445 | 2023-02-08 06:47:19 |
| R99.htm | 160138 | 2023-02-08 06:47:19 |
| R9999.htm | 23011 | 2023-02-08 06:47:19 |
| report.css | 2768 | 2023-02-08 06:47:19 |
| Show.js | 1086 | 2023-02-08 06:47:19 |