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Agreements and Related Party Transactions - Narrative (Details) $ in Thousands |  |  | 6 Months Ended | 81 Months Ended |
--- | --- | --- | --- | --- | ---
May 04, 2026 | May 05, 2025 component | Jun. 30, 2026 USD ($) | Jun. 30, 2026 USD ($) | Dec. 31, 2025 USD ($) | [3],[4]
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Fair Value |  |  | $ 14,955,049 | [1],[2] | $ 14,955,049 | [1],[2] | $ 16,470,893
Equity Commitment To LSI Financing LLC |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 115,800 |  |  |  |
Commitment To LSI Financing LLC |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 116,100 |  |  |  |
Equity Commitment To Owl-HP Finance |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 40,900 |  |  |  |
Commitment To Owl-HP Finance |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 84,500 |  |  |  |
Affiliated entity | Administration Agreement |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Written notice for contract termination, term | 60 days |  |  |  |  |  |
Affiliated entity | Investment Advisory Agreement |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Written notice for contract termination, term |  | 60 days |  |  |  |  |
Incentive fee components | component |  | 2 |  |  |  |  |
Affiliated entity | Investment Advisory Agreement, Management Fee - Average Gross Assets |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Base rate |  | 1.50% |  |  |  |  |
Affiliated entity | Investment Advisory Agreement, Management Fee - Asset Coverage Ratio Threshold |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Base rate |  | 200.00% |  |  |  |  |
Affiliated entity | Investment Advisory Agreement, Management Fee - Average Gross Assets Below Asset Coverage Ratio |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Base rate |  | 1.00% |  |  |  |  |
Affiliated entity | Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Incentive rate |  | 100.00% |  |  |  |  |
Affiliated entity | Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Incentive rate |  | 1.50% |  |  |  |  |
Affiliated entity | Investment Advisory Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Threshold |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Incentive rate |  | 17.50% |  |  |  |  |
Affiliated entity | Investment Advisory Agreement - Incentive Rate, Quarterly Threshold |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Incentive rate |  | 1.82% |  |  |  |  |
Affiliated entity | Investment Management Agreement - Incentive Rate, Realized Capital Gains |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Incentive rate |  | 17.50% |  |  |  |  |
Affiliated entity | Commitment To Indirectly Owned Subsidiary |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  |  |  | 504,600 |  |
Fair Value |  |  | 607,100 |  | 607,100 |  |
Affiliated entity | Commitment To Amergin AssetCo |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 269,900 |  |  |  |
Affiliated entity | Equity Commitment To Amergin AssetCo |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 98,600 |  |  |  |
Affiliated entity | Debt Commitment To Amergin AssetCo |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 171,300 |  |  |  |
Fair Value |  |  | 266,200 |  | $ 266,200 |  |
Affiliated entity | Equity Commitment To Fifth Season |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 302,700 |  |  |  |
Affiliated entity | Equity Commitment To LSI Financing DAC |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 5,200 |  |  |  |
Affiliated entity | Commitment To LSI Financing DAC |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 5,300 |  |  |  |
Affiliated entity | Equity Commitment To LSI Financing LLC |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | 257,900 |  |  |  |
Affiliated entity | Commitment To LSI Financing LLC |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount of transaction |  |  | $ 297,300 |  |  |  |
[1] | Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on the Company’s restricted securities.
[2] | Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Revolving Credit Facility, SPV Asset Facilities and CLOs. See “Note 5 — Debt.”
[3] | Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on the Company’s restricted securities.
[4] | Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Revolving Credit Facility, SPV Asset Facilities and CLOs. See “Note 5 — Debt.”

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