Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001476765-22-000103-index-headers.html | 2022-11-21 16:18:22 | |
| 0001476765-22-000103-index.html | 2022-11-21 16:18:22 | |
| 0001476765-22-000103.txt | 2022-11-21 16:18:22 | |
 0001476765-22-000103-xbrl.zip | 3517479 | 2022-11-21 16:18:22 |
| FilingSummary.xml | 47926 | 2022-11-21 16:18:22 |
| Financial_Report.xlsx | 850155 | 2022-11-21 16:18:22 |
| gbdc-20220930.htm | 57409718 | 2022-11-21 16:18:22 |
| gbdc-20220930.xsd | 131961 | 2022-11-21 16:18:22 |
| gbdc-20220930_cal.xml | 97079 | 2022-11-21 16:18:22 |
| gbdc-20220930_def.xml | 658676 | 2022-11-21 16:18:22 |
 gbdc-20220930_g1.jpg | 35611 | 2022-11-21 16:18:22 |
 gbdc-20220930_g2.jpg | 23591 | 2022-11-21 16:18:22 |
 gbdc-20220930_g3.jpg | 116792 | 2022-11-21 16:18:22 |
| gbdc-20220930_htm.xml | 59735403 | 2022-11-21 16:18:22 |
| gbdc-20220930_lab.xml | 1073120 | 2022-11-21 16:18:22 |
| gbdc-20220930_pre.xml | 751202 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit141.htm | 56292 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit142.htm | 97579 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit211.htm | 9756 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit311.htm | 8240 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit312.htm | 8112 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit321.htm | 8067 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit991.htm | 11036 | 2022-11-21 16:18:22 |
| gbdcfy202210-kexhibit992.htm | 2289 | 2022-11-21 16:18:22 |
| gbdcfy202210kexhibit33.htm | 113207 | 2022-11-21 16:18:22 |
| gbdcfy2022ex47descriptiono.htm | 38304 | 2022-11-21 16:18:22 |
| MetaLinks.json | 1007317 | 2022-11-21 16:18:22 |
| R1.htm | 69926 | 2022-11-21 16:18:22 |
| R10.htm | 9406 | 2022-11-21 16:18:22 |
| R11.htm | 44588 | 2022-11-21 16:18:22 |
| R12.htm | 31932 | 2022-11-21 16:18:22 |
| R13.htm | 340783 | 2022-11-21 16:18:22 |
| R14.htm | 151240 | 2022-11-21 16:18:22 |
| R15.htm | 167484 | 2022-11-21 16:18:22 |
| R16.htm | 350329 | 2022-11-21 16:18:22 |
| R17.htm | 54594 | 2022-11-21 16:18:22 |
| R18.htm | 10003 | 2022-11-21 16:18:22 |
| R19.htm | 103140 | 2022-11-21 16:18:22 |
| R2.htm | 226721 | 2022-11-21 16:18:22 |
| R20.htm | 15071 | 2022-11-21 16:18:22 |
| R21.htm | 9839 | 2022-11-21 16:18:22 |
| R22.htm | 57591 | 2022-11-21 16:18:22 |
| R23.htm | 6179 | 2022-11-21 16:18:22 |
| R24.htm | 1246135 | 2022-11-21 16:18:22 |
| R25.htm | 89250 | 2022-11-21 16:18:22 |
| R26.htm | 340357 | 2022-11-21 16:18:22 |
| R27.htm | 155765 | 2022-11-21 16:18:22 |
| R28.htm | 160706 | 2022-11-21 16:18:22 |
| R29.htm | 295333 | 2022-11-21 16:18:22 |
| R3.htm | 24552 | 2022-11-21 16:18:22 |
| R30.htm | 51323 | 2022-11-21 16:18:22 |
| R31.htm | 102869 | 2022-11-21 16:18:22 |
| R32.htm | 14455 | 2022-11-21 16:18:22 |
| R33.htm | 57272 | 2022-11-21 16:18:22 |
| R34.htm | 52265 | 2022-11-21 16:18:22 |
| R35.htm | 61741 | 2022-11-21 16:18:22 |
| R36.htm | 26345 | 2022-11-21 16:18:22 |
| R37.htm | 102631 | 2022-11-21 16:18:22 |
| R38.htm | 309676 | 2022-11-21 16:18:22 |
| R39.htm | 34614 | 2022-11-21 16:18:22 |
| R4.htm | 173507 | 2022-11-21 16:18:22 |
| R40.htm | 6087 | 2022-11-21 16:18:22 |
| R41.htm | 101892 | 2022-11-21 16:18:22 |
| R42.htm | 18767 | 2022-11-21 16:18:22 |
| R43.htm | 9996 | 2022-11-21 16:18:22 |
| R44.htm | 5690 | 2022-11-21 16:18:22 |
| R45.htm | 42498 | 2022-11-21 16:18:22 |
| R46.htm | 7307 | 2022-11-21 16:18:22 |
| R47.htm | 53143 | 2022-11-21 16:18:22 |
| R48.htm | 90160 | 2022-11-21 16:18:22 |
| R49.htm | 7356 | 2022-11-21 16:18:22 |
| R5.htm | 54772 | 2022-11-21 16:18:22 |
| R50.htm | 6534 | 2022-11-21 16:18:22 |
| R51.htm | 189783 | 2022-11-21 16:18:22 |
| R52.htm | 96450 | 2022-11-21 16:18:22 |
| R53.htm | 28406 | 2022-11-21 16:18:22 |
| R54.htm | 10031 | 2022-11-21 16:18:22 |
| R55.htm | 191522 | 2022-11-21 16:18:22 |
| R56.htm | 29815 | 2022-11-21 16:18:22 |
| R57.htm | 21495 | 2022-11-21 16:18:22 |
| R58.htm | 19501 | 2022-11-21 16:18:22 |
| R59.htm | 10608 | 2022-11-21 16:18:22 |
| R6.htm | 138131 | 2022-11-21 16:18:22 |
| R60.htm | 7652 | 2022-11-21 16:18:22 |
| R61.htm | 31606 | 2022-11-21 16:18:22 |
| R62.htm | 6711 | 2022-11-21 16:18:22 |
| R63.htm | 27013 | 2022-11-21 16:18:22 |
| R64.htm | 7962 | 2022-11-21 16:18:22 |
| R65.htm | 13734 | 2022-11-21 16:18:22 |
| R66.htm | 27231 | 2022-11-21 16:18:22 |
| R67.htm | 6762 | 2022-11-21 16:18:22 |
| R68.htm | 98243 | 2022-11-21 16:18:22 |
| R69.htm | 34660 | 2022-11-21 16:18:22 |
| R7.htm | 11710788 | 2022-11-21 16:18:22 |
| R70.htm | 13868 | 2022-11-21 16:18:22 |
| R71.htm | 26454 | 2022-11-21 16:18:22 |
| R72.htm | 9692 | 2022-11-21 16:18:22 |
| R8.htm | 5181865 | 2022-11-21 16:18:22 |
| R9.htm | 7959 | 2022-11-21 16:18:22 |
| report.css | 2767 | 2022-11-21 16:18:22 |
| Show.js | 1085 | 2022-11-21 16:18:22 |