Financial Highlights - Schedule Of Financial Highlights (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | ||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2022 |
Sep. 30, 2022 |
Jun. 30, 2022 |
Mar. 31, 2022 |
Dec. 31, 2021 |
Sep. 30, 2021 |
Jun. 30, 2021 |
Mar. 31, 2021 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Oct. 12, 2021 |
Jun. 16, 2021 |
Jun. 15, 2020 |
Jun. 14, 2020 |
||||||||
Investment Company, Financial Highlights [Roll Forward] | ||||||||||||||||||||||||
Net asset value, beginning of period | $ 27.17 | [1] | $ 25.02 | $ 27.17 | [1] | $ 25.02 | $ 30.54 | $ 31.35 | $ 37.20 | |||||||||||||||
Results of operation | ||||||||||||||||||||||||
Net investment income (loss) (in dollars per share) | $ 0.80 | $ 0.76 | $ 0.71 | $ 0.77 | $ 0.66 | $ 0.71 | $ 0.77 | $ 0.63 | 3.05 | 2.76 | 2.66 | 3.16 | 3.28 | |||||||||||
Net realized gain (loss) and unrealized appreciation (depreciation) | (2.74) | 4.28 | (5.85) | (1.27) | (5.73) | |||||||||||||||||||
Net increase (decrease) in net assets resulting from operations | 0.31 | 7.04 | (3.19) | 1.89 | (2.45) | |||||||||||||||||||
Stockholder distributions | ||||||||||||||||||||||||
Distributions from net investment income | 2.66 | 2.47 | 2.56 | 3.04 | 3.40 | |||||||||||||||||||
Distributions from net realized gain on investments | 0 | 0 | 0 | 0 | 0 | |||||||||||||||||||
Net decrease in net assets resulting from stockholder distributions | (2.66) | (2.47) | (2.56) | (3.04) | (3.40) | |||||||||||||||||||
Capital share transactions | ||||||||||||||||||||||||
Issuance of common stock | 0 | (2.20) | 0 | 0 | 0.00 | |||||||||||||||||||
Repurchases of common stock | 0.07 | 0.01 | 0.23 | 0.34 | 0.16 | |||||||||||||||||||
Deduction of deferred costs | 0 | (0.23) | 0 | 0 | (0.16) | |||||||||||||||||||
Net increase (decrease) in net assets resulting from capital share transactions | 0.07 | (2.42) | 0.23 | 0.34 | 0 | |||||||||||||||||||
Net asset value, end of period | 24.89 | [1] | 27.17 | [1] | 24.89 | [1] | 27.17 | [1] | 25.02 | 30.54 | 31.35 | |||||||||||||
Per share market value, end of period | $ 17.50 | $ 20.94 | $ 17.50 | $ 20.94 | $ 16.56 | $ 24.52 | $ 20.72 | |||||||||||||||||
Common stock, shares outstanding (in shares) | 281,731,750 | 284,543,091 | 281,731,750 | 284,543,091 | 123,755,965 | 126,581,766 | 132,869,685 | 123,750,000 | 495,000,000.0 | |||||||||||||||
Total return based on net asset value | 1.40% | 18.47% | (9.69%) | 7.14% | (6.56%) | |||||||||||||||||||
Total return based on market value | (4.61%) | 41.45% | (19.73%) | 33.80% | (20.15%) | |||||||||||||||||||
Ratio/Supplemental Data: | ||||||||||||||||||||||||
Total stockholders' equity | $ 7,012 | $ 7,730 | $ 7,012 | $ 7,730 | $ 3,096 | $ 3,866 | $ 4,166 | |||||||||||||||||
Ratio of net investment income to average net assets | 11.42% | 10.36% | 10.44% | 10.09% | 9.15% | |||||||||||||||||||
Ratio of total operating expenses to average net assets | 10.96% | 9.35% | 9.71% | 9.09% | 8.57% | |||||||||||||||||||
Ratio of net operating expenses to average net assets | 10.17% | 8.82% | 9.71% | 9.09% | 8.44% | |||||||||||||||||||
Portfolio turnover | 28.61% | 49.82% | 32.95% | 38.49% | 19.92% | |||||||||||||||||||
Total amount of senior securities outstanding, exclusive of treasury securities | $ 8,731 | $ 9,179 | $ 8,731 | $ 9,179 | $ 4,042 | $ 4,195 | $ 3,397 | |||||||||||||||||
Asset coverage per ratio | 180.00% | 184.00% | 180.00% | 184.00% | 177.00% | 192.00% | 223.00% | |||||||||||||||||
Increase in net asset value (in shares) | $ 0.01 | |||||||||||||||||||||||
Deferred tax , prepaid expenses | $ 22 | $ 22 | ||||||||||||||||||||||
4.250% Unsecured Notes due 2025 | Unsecured Notes | ||||||||||||||||||||||||
Ratio/Supplemental Data: | ||||||||||||||||||||||||
Total amount of senior securities outstanding, exclusive of treasury securities | $ 475 | $ 475 | $ 475 | $ 475 | ||||||||||||||||||||
Stated interest rate | 4.25% | 4.25% | 4.25% | 4.25% | 4.25% | 4.25% | ||||||||||||||||||
|