v3.26.1
Investments - Summary of Geographic Composition of investments at fair value (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Summary of Investment Holdings [Line Items]    
Amortized Cost $ 4,537,269 [1],[2] $ 4,241,699 [3],[4]
Fair Value $ 4,493,774 [2] $ 4,246,035 [4]
% of Total Investments at Fair Value 100.00% 100.00%
Non-Controlled/Non-Affiliated Investments    
Summary of Investment Holdings [Line Items]    
Amortized Cost $ 4,487,395 [1],[2] $ 4,170,055 [3],[4]
Fair Value $ 4,443,900 [2] $ 4,174,391 [4]
% of Total Investments at Fair Value 100.00% 100.00%
Fair Value as Net Assets 205.95% 206.90%
United States    
Summary of Investment Holdings [Line Items]    
Amortized Cost $ 4,418,866 $ 4,108,332
Fair Value $ 4,375,877 $ 4,112,590
% of Total Investments at Fair Value 98.46% 98.52%
Fair Value as Net Assets 202.80% 203.83%
Canada    
Summary of Investment Holdings [Line Items]    
Amortized Cost $ 44,319 $ 42,794
Fair Value $ 44,246 $ 42,905
% of Total Investments at Fair Value 1.00% 1.03%
Fair Value as Net Assets 2.05% 2.13%
Australia    
Summary of Investment Holdings [Line Items]    
Amortized Cost $ 18,886 $ 18,929
Fair Value $ 18,540 $ 18,896
% of Total Investments at Fair Value 0.42% 0.45%
Fair Value as Net Assets 0.86% 0.94%
Netherlands    
Summary of Investment Holdings [Line Items]    
Amortized Cost $ 5,324  
Fair Value $ 5,237  
% of Total Investments at Fair Value 0.12%  
Fair Value as Net Assets 0.24%  
[1] The cost represents the original cost adjusted for the amortization of discounts and premiums, as applicable, on debt investments using the effective interest method in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).
[2] Unless otherwise indicated, issuers of debt and equity investments held by the Company (which such term “Company” shall include the Company’s consolidated subsidiaries for purposes of this Consolidated Schedule of Investments) are denominated in dollars. All debt investments are income producing unless otherwise indicated. All equity investments are non-income producing unless otherwise noted. Certain portfolio company investments are subject to contractual restrictions on sales. The total par amount is presented for debt investments and the number of shares or units owned is presented for equity investments.
[3] The cost represents the original cost adjusted for the amortization of discounts and premiums, as applicable, on debt investments using the effective interest method in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).
[4] Unless otherwise indicated, issuers of debt and equity investments held by the Company (which such term “Company” shall include the Company’s consolidated subsidiaries for purposes of this Consolidated Schedule of Investments) are denominated in dollars. All debt investments are income producing unless otherwise indicated. All equity investments are non-income producing unless otherwise noted. Certain portfolio company investments are subject to contractual restrictions on sales. The total par amount is presented for debt investments and the number of shares or units owned is presented for equity investments.