v3.26.1
Fair Value of Financial Instruments - Schedule of Balance Sheet Information (Parenthetical) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost $ 3,324,332 [1],[2],[3] $ 3,323,282 [4],[5],[6]
Ownership interest in members' equity 150,992 $ 172,582
Structured Credit Partners JV, LLC    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 1,033,006  
Ownership interest in members' equity $ 14,665  
[1] As of March 31, 2026, the estimated cost basis of investments for U.S. federal tax purposes was $3,334,261 resulting in estimated gross unrealized gains and losses of $243,959 and $283,761, respectively.
[2] The amortized cost represents the original cost adjusted for the amortization of discounts and premiums, as applicable, on debt investments using the effective interest method.
[3] Unless otherwise indicated, the Company’s portfolio companies are domiciled in the United States. Certain portfolio company investments are subject to contractual restrictions on sales.
[4] As of December 31, 2025, the estimated cost basis of investments for U.S. federal tax purposes was $3,332,367 resulting in estimated gross unrealized gains and losses of $219,540 and $231,975, respectively.
[5] Certain portfolio company investments are subject to contractual restrictions on sales.
[6] The amortized cost represents the original cost adjusted for the amortization of discounts and premiums, as applicable, on debt investments using the effective interest method.