Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Financial Instruments Not Carried at Fair Value (Details)

v3.24.1
Fair Value Measurements - Financial Instruments Not Carried at Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value $ 4,214,739 $ 2,346,629
Unamortized issuance costs (11,833) (3,572)
Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 4,206,900 2,342,067
Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 4,214,739 2,346,629
HLEND A Funding Facility | Line of credit | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 615,838 453,663
HLEND A Funding Facility | Line of credit | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 615,838 453,663
HLEND B Funding Facility | Line of credit | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 513,747 482,084
HLEND B Funding Facility | Line of credit | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 513,747 482,084
HLEND C Funding Facility | Line of credit | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 487,500 0
HLEND C Funding Facility | Line of credit | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 487,500 0
HLEND D Funding Facility | Line of credit | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 195,000 0
HLEND D Funding Facility | Line of credit | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 195,000 0
Revolving Credit Facility | Line of credit | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 1,025,294 704,819
Revolving Credit Facility | Line of credit | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 1,025,294 704,819
November 2025 Notes | Senior notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Unamortized issuance costs (1,200) (1,900)
Net cumulative increase (decrease) from hedging activities (0) 300
November 2025 Notes | Senior notes | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 168,749 168,462
November 2025 Notes | Senior notes | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 170,580 170,628
November 2027 Notes | Senior notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Unamortized issuance costs (1,400) (1,700)
Net cumulative increase (decrease) from hedging activities 700 700
November 2027 Notes | Senior notes | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 154,366 153,958
November 2027 Notes | Senior notes | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 155,934 156,354
March 2026 Notes | Senior notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Unamortized issuance costs (1,800)  
Net cumulative increase (decrease) from hedging activities 600  
March 2026 Notes | Senior notes | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 274,716 0
March 2026 Notes | Senior notes | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 275,727 0
March 2028 Notes | Senior notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Unamortized issuance costs (900)  
Net cumulative increase (decrease) from hedging activities 500  
March 2028 Notes | Senior notes | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 123,588 0
March 2028 Notes | Senior notes | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 123,672 0
September 2027 Notes | Senior notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Unamortized issuance costs (700)  
Net cumulative increase (decrease) from hedging activities 1,300  
September 2027 Notes | Senior notes | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 75,545 0
September 2027 Notes | Senior notes | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 76,389 0
September 2028 Notes | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 252,814 0
September 2028 Notes | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 255,315 0
September 2028 Notes | Senior notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Unamortized issuance costs (2,500)  
Net cumulative increase (decrease) from hedging activities 5,300  
2023 CLO Secured Notes | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 319,743 0
2023 CLO Secured Notes | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 319,743 0
2023 CLO Secured Notes | Senior notes    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Unamortized issuance costs (3,300)  
Short term financing transactions | Securities sold under agreements to repurchase | Carrying
Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value 0 379,081
Short term financing transactions | Securities sold under agreements to repurchase | Fair Value    
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]    
Debt fair value $ 0 $ 379,081