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Financial Highlights - Summary of Information about Senior Securities (Parenthetical) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |  |  |  |
Asset coverage per unit measure per dollar | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000
2025 Notes |  |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |  |  |  |
Average daily price of notes | 1,000,000 |  |  |  |
March 2029 Notes |  |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |  |  |  |
Average daily price of notes | 1,000,000 |  |  |  |
September 2029 Notes |  |  |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] |  |  |  |  |
Average daily price of notes | $ 1,000,000 |  |  |  |

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