v3.25.4
Debt (Details) - USD ($)
12 Months Ended
Dec. 18, 2024
Sep. 27, 2024
Aug. 21, 2024
Nov. 29, 2023
Dec. 31, 2025
Dec. 31, 2024
Jan. 30, 2026
Sep. 30, 2025
Aug. 14, 2025
Jul. 18, 2025
May 19, 2025
Mar. 07, 2025
Dec. 13, 2024
Oct. 30, 2024
May 24, 2024
Mar. 22, 2024
Dec. 31, 2023
Dec. 29, 2023
Nov. 11, 2022
Nov. 10, 2022
Debt Instrument [Line Items]                                        
Threshold asset coverage ratio (as a percent)                                     150.00% 200.00%
Asset coverage ratio (as a percent)         216.90% 194.80%                            
Weighted average interest rate of debt (as a percent)         6.40% 7.70%                            
Average outstanding balance         $ 540,800,000 $ 206,400,000                            
Maximum commitment amount $ 575,000,000                                      
Aggregate principal amount         1,300,000,000 765,000,000                            
Goldman Sachs Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Unused commitment fee (as a percent)       0.50%                                
Maximum commitment amount       $ 150,000,000       $ 250,000,000       $ 300,000,000   $ 200,000,000   $ 175,000,000        
Aggregate principal amount         200,000,000 200,000,000                            
Goldman Sachs Revolving Credit Facility | 3-month Term SOFR                                        
Debt Instrument [Line Items]                                        
Interest rate (as a percent)       2.90%               2.00%                
JPM Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Unused commitment fee (as a percent)     0.50%                                  
Maximum commitment amount     $ 150,000,000                   $ 250,000,000              
Aggregate principal amount         $ 250,000,000 250,000,000                            
JPM Revolving Credit Facility | 3-month Term SOFR                                        
Debt Instrument [Line Items]                                        
Interest rate (as a percent)     2.30%                   2.25%              
SMBC Revolving Credit Facility                                        
Debt Instrument [Line Items]                                        
Line of credit facility, current borrowing capacity                             $ 75,000,000     $ 50,000,000    
Maximum commitment amount 315,000,000           $ 650,000,000     $ 575,000,000 $ 500,000,000       $ 75,000,000     $ 500,000,000    
Provision to permit increases of term and revolving commitments $ 800,000,000                                      
Debt instrument, basis spread on variable rate   0.125%     0.125%                              
Aggregate principal amount         $ 575,000,000 315,000,000                            
SMBC Revolving Credit Facility | ABR Loan | Borrowing Base is Greater Than or Equal to 1.60 Times                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate 1.00%       1.00%                              
SMBC Revolving Credit Facility | ABR Loan | Borrowing Base is Less Than 1.60 Times                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate         1.125%                              
SMBC Revolving Credit Facility | RFR Loan | Borrowing Base is Greater Than or Equal to 1.60 Times                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate 2.00%       2.00%                              
SMBC Revolving Credit Facility | RFR Loan | Borrowing Base is Less Than 1.60 Times                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate         2.125%                              
SMBC Revolving Credit Facility | RFR Loan | Credit Adjustment Spread                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate         0.0326%                              
SMBC Revolving Credit Facility | Term Benchmark Loan | Borrowing Base is Greater Than or Equal to 1.60 Times                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate 2.00%       2.00%                              
SMBC Revolving Credit Facility | Term Benchmark Loan | Borrowing Base is Less Than 1.60 Times                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate         2.125%                              
SMBC Revolving Credit Facility | Term Benchmark Loan | Credit Adjustment Spread                                        
Debt Instrument [Line Items]                                        
Debt instrument, basis spread on variable rate         0.10%                              
Series 2025 Senior Notes | Tranche A Notes                                        
Debt Instrument [Line Items]                                        
Aggregate principal amount         $ 110,000,000 0     $ 110,000,000               $ 0      
Interest rate (as a percent)                 5.92%                      
Series 2025 Senior Notes | Tranche B Notes                                        
Debt Instrument [Line Items]                                        
Aggregate principal amount         $ 165,000,000 $ 0     $ 165,000,000               $ 0      
Interest rate (as a percent)                 6.25%