v3.26.1
Agreements and Related Party Transactions (Details)
 3 Months Ended 78 Months Ended
May 04, 2026
May 05, 2025
component
May 18, 2021
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
 [4],[5]
Related Party Transaction [Line Items]              
Management fee, net [1]       $ 60,693,000 $ 62,158,000    
Performance based incentive fees       32,412,000 41,029,000    
Fair Value       15,344,201,000 [2],[3]   $ 15,344,201,000 [2],[3] $ 16,470,893,000
Administration Agreement              
Related Party Transaction [Line Items]              
Administrative fees expense       1,800,000 2,800,000    
Equity Commitment To LSI Financing LLC              
Related Party Transaction [Line Items]              
Amount of transaction       111,600,000      
Commitment To LSI Financing LLC              
Related Party Transaction [Line Items]              
Amount of transaction       112,300,000      
Equity Commitment To Owl-HP Finance              
Related Party Transaction [Line Items]              
Amount of transaction       17,300,000      
Commitment To Owl-HP Finance              
Related Party Transaction [Line Items]              
Amount of transaction       84,500,000      
Affiliated entity | Administration Agreement              
Related Party Transaction [Line Items]              
Contract term     2 years        
Affiliated entity | Administration Agreement | Subsequent Event              
Related Party Transaction [Line Items]              
Written notice for contract termination, term 60 days            
Affiliated entity | Investment Advisory Agreement              
Related Party Transaction [Line Items]              
Contract term     2 years        
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 | Management Fee              
Related Party Transaction [Line Items]              
Management fee, net       60,700,000 62,200,000    
Management fees waived       200,000 49,000    
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 | Performance Based Incentive Fee              
Related Party Transaction [Line Items]              
Performance based incentive fees       32,400,000 41,000,000.0    
Affiliated entity | Capital Gains Based Incentive Fees              
Related Party Transaction [Line Items]              
Performance based incentive fees       0 $ 0    
Affiliated entity | Commitment To Indirectly Owned Subsidiary              
Related Party Transaction [Line Items]              
Amount of transaction           505,000,000.0  
Fair Value       606,800,000   606,800,000  
Affiliated entity | Commitment To Amergin AssetCo              
Related Party Transaction [Line Items]              
Amount of transaction       270,200,000      
Affiliated entity | Equity Commitment To Amergin AssetCo              
Related Party Transaction [Line Items]              
Amount of transaction       110,600,000      
Affiliated entity | Debt Commitment To Amergin AssetCo              
Related Party Transaction [Line Items]              
Amount of transaction       159,600,000      
Fair Value       254,200,000   $ 254,200,000  
Affiliated entity | Equity Commitment To Fifth Season              
Related Party Transaction [Line Items]              
Amount of transaction       303,100,000      
Affiliated entity | Equity Commitment To LSI Financing DAC              
Related Party Transaction [Line Items]              
Amount of transaction       6,800,000      
Affiliated entity | Commitment To LSI Financing DAC              
Related Party Transaction [Line Items]              
Amount of transaction       6,800,000      
Affiliated entity | Equity Commitment To LSI Financing LLC              
Related Party Transaction [Line Items]              
Amount of transaction       274,700,000      
Affiliated entity | Commitment To LSI Financing LLC              
Related Party Transaction [Line Items]              
Amount of transaction       $ 354,600,000      
[1] Refer to “Note 3 — Agreements and Related Party Transactions” for additional details on management fee waiver.
[2] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on the Company’s restricted securities.
[3] 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.”
[4] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on the Company’s restricted securities.
[5] 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.”