| Investment income | — | — | — |
| From non-controlled/non-affiliated investments | — | — | — |
| Interest income | 1,239.92a | 1,089.04a | 796.5a |
| Payment-in-kind interest income | 81.39a | 47.08a | 40.32a |
| Dividend income | 0.24a | 0.39a | 9.31a |
| Fee income | 3.66a | 7.01a | 4.16a |
| From non-controlled/affiliated investments | — | — | — |
| Interest income | 0.43a | | |
| Payment-in-kind interest income | 1.26a | | |
| Total investment income | 1,326.9a | 1,143.52a | 850.29a |
| Expenses | — | — | — |
| Interest expense | -326.13a | -266.42a | -203.58a |
| Management fees | -116.62a | -98.12a | -101.71a |
| Income based incentive fees | -150.1a | -134.23a | -97.15a |
| Capital gains based incentive fees | | -5.51a | -11.88a |
| Professional fees | -4.65a | -6.08a | -4.01a |
| Board of trustees’ fees | -1.09a | -0.91a | -0.85a |
| Administrative service expenses | -2.64a | -2.25a | -2.67a |
| Other general and administrative | -3.55a | -6.12a | -6.34a |
| Total expenses before tax expense | -604.78a | -508.62a | -404.44a |
| Management fees waived | | -20.19a | -25.43a |
| Incentive fees waived | | -15.6a | -13.88a |
| Net expenses before tax expense | -604.78a | -472.82a | -365.13a |
| Net investment income before tax expense | 722.12a | 670.7a | 485.16a |
| Excise and other tax expense | -14.52a | -16.8a | -1.39a |
| Net investment income after tax expense | 707.6a | 653.91a | 483.78a |
| Realized and unrealized gain (loss) | — | — | — |
| Net change in unrealized appreciation (depreciation) | — | — | — |
| Non-controlled/non-affiliated investments | -11.24a | -36.69a | -143.52a |
| Non-controlled/affiliated investments | -2.94a | -14.16a | 17.02a |
| Derivative instruments | 2.4a | | |
| Translation of assets and liabilities in foreign currencies | -0.05a | -3.73a | 4.34a |
| Income tax (provision) benefit | -1.66a | | |
| Net change in unrealized appreciation (depreciation) | -13.49a | -54.57a | -122.15a |
| Net realized gain (loss) | — | — | — |
| Non-controlled/non-affiliated investments | -18.98a | -14.49a | 37.4a |
| Non-controlled/affiliated investments | | 8.28a | |
| Derivative instruments | 8.78a | | |
| Foreign currency transactions | 10.18a | 18.82a | 5.53a |
| Net realized gain (loss) | -0.01a | 12.62a | 42.93a |
| Net realized and change in unrealized gain (loss) | -13.5a | -41.95a | -79.22a |
| Net increase (decrease) in net assets resulting from operations | 694.1a | 611.95a | 404.56a |