v3.26.1
Borrowings - SVP Financing Facilities (Details)
$ in Thousands
1 Months Ended
Jan. 11, 2032
Oct. 14, 2027
May 15, 2025
Mar. 28, 2024
Mar. 31, 2023
Jan. 12, 2023
USD ($)
Nov. 10, 2025
Mar. 31, 2026
USD ($)
financingFacility
Dec. 31, 2025
USD ($)
financingFacility
Dec. 23, 2025
USD ($)
Dec. 22, 2025
USD ($)
Sep. 17, 2025
USD ($)
Aug. 28, 2025
USD ($)
Apr. 17, 2025
USD ($)
Apr. 16, 2025
USD ($)
Nov. 21, 2024
USD ($)
Nov. 20, 2024
USD ($)
Jul. 19, 2022
USD ($)
Debt Instrument [Line Items]                                    
Asset coverage ratio (as a percent)               196.00% 195.70%                  
Number of special purpose vehicle financing facilities | financingFacility               5 5                  
HLEND A Funding Facility | Line of credit                                    
Debt Instrument [Line Items]                                    
Line of credit maximum borrowing capacity               $ 1,600,000 $ 1,600,000 $ 1,600,000 $ 1,250,000              
Basis spread on variable rate     1.75%                              
HLEND A Funding Facility | Line of credit | Forecast                                    
Debt Instrument [Line Items]                                    
Basis spread increase (decrease)   0.10%                                
HLEND B Funding Facility | Line of credit                                    
Debt Instrument [Line Items]                                    
Line of credit maximum borrowing capacity               1,500,000 1,500,000     $ 1,500,000           $ 1,250,000
Basis spread floor             1.75%                      
HLEND C Funding Facility | Line of credit                                    
Debt Instrument [Line Items]                                    
Line of credit maximum borrowing capacity           $ 750,000   850,000 850,000       $ 850,000          
Basis spread on variable rate           1.90%                        
HLEND C Funding Facility | Line of credit | Forecast                                    
Debt Instrument [Line Items]                                    
Basis spread increase (decrease) 2.00%                                  
HLEND D Funding Facility | Line of credit                                    
Debt Instrument [Line Items]                                    
Line of credit maximum borrowing capacity               1,000,000 1,000,000             $ 1,000,000 $ 500,000  
Basis spread on variable rate         1.85%                          
HLEND E Funding Facility | Swingline Sub Facility                                    
Debt Instrument [Line Items]                                    
Line of credit maximum borrowing capacity                           $ 200,000        
HLEND E Funding Facility | Line of credit                                    
Debt Instrument [Line Items]                                    
Line of credit maximum borrowing capacity               $ 1,500,000 $ 1,500,000         $ 1,500,000 $ 1,000,000      
Basis spread on variable rate       1.85%