v3.26.1
Investments - Schedule of Fair Value, Assets Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Sep. 30, 2024
Schedule of Investments [Line Items]    
Principal $ 2,179,985 $ 1,298,854
Amortized Cost 2,176,447 1,291,512
Fair Value 2,209,174 [1] 1,311,001 [2]
Senior secured    
Schedule of Investments [Line Items]    
Principal 77,389 39,377
Amortized Cost 76,691 38,960
Fair Value 77,408 39,358
One stop    
Schedule of Investments [Line Items]    
Principal 2,069,014 1,254,102
Amortized Cost 2,037,002 1,232,741
Fair Value 2,063,173 1,250,206
Second lien    
Schedule of Investments [Line Items]    
Principal 12,674 4,446
Amortized Cost 12,600 4,373
Fair Value 12,722 4,446
Subordinated debt    
Schedule of Investments [Line Items]    
Principal 20,908 929
Amortized Cost 20,615 897
Fair Value 20,741 921
Equity    
Schedule of Investments [Line Items]    
Amortized Cost 29,539 [3],[4] 14,541 [5],[6]
Fair Value $ 35,130 [1],[3],[4] $ 16,070 [2],[5],[6]
[1] The fair values of investments were valued using significant unobservable inputs, unless otherwise noted. See Note 7. The fair value of loan investments may include the impact of the unfunded commitment being valued below par.
[2] The fair values of investments were valued using significant unobservable inputs, unless otherwise noted. See Note 7. The fair value of loan investments may include the impact of the unfunded commitment being valued below par.
[3] Equity investments are non-income producing securities, unless otherwise noted.
[4] Ownership of certain equity investments occurs through a holding company or partnership.
[5] Equity investments are non-income producing securities, unless otherwise noted.
[6] Ownership of certain equity investments occurs through a holding company or partnership.