Annual report pursuant to Section 13 and 15(d)

Investments - Geographic Composition of Investments (Details)

v3.24.1
Investments - Geographic Composition of Investments (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]    
Amortized Cost $ 9,203,801 [1] $ 5,860,186 [2]
Fair Value $ 9,289,410 $ 5,716,521
% of Total
Investments at
Fair Value 100.00% 100.00%
Percentage of Net Assets 179.15% 165.44%
Australia    
Schedule of Investments [Line Items]    
Amortized Cost $ 264,309 $ 271,143
Fair Value $ 266,377 $ 269,430
% of Total
Investments at
Fair Value 2.87% 4.71%
Percentage of Net Assets 5.14% 7.80%
Canada    
Schedule of Investments [Line Items]    
Amortized Cost $ 78,148 $ 40,335
Fair Value $ 77,962 $ 37,399
% of Total
Investments at
Fair Value 0.84% 0.65%
Percentage of Net Assets 1.50% 1.08%
France    
Schedule of Investments [Line Items]    
Amortized Cost $ 35,514 $ 24,513
Fair Value $ 37,969 $ 25,139
% of Total
Investments at
Fair Value 0.41% 0.44%
Percentage of Net Assets 0.73% 0.73%
Germany    
Schedule of Investments [Line Items]    
Amortized Cost $ 68,533  
Fair Value $ 71,499  
% of Total
Investments at
Fair Value 0.77%  
Percentage of Net Assets 1.38%  
Italy    
Schedule of Investments [Line Items]    
Amortized Cost $ 127,737 $ 122,826
Fair Value $ 137,270 $ 127,443
% of Total
Investments at
Fair Value 1.48% 2.23%
Percentage of Net Assets 2.65% 3.69%
Norway    
Schedule of Investments [Line Items]    
Amortized Cost $ 24,920  
Fair Value $ 24,957  
% of Total
Investments at
Fair Value 0.27%  
Percentage of Net Assets 0.48%  
Singapore    
Schedule of Investments [Line Items]    
Amortized Cost $ 31,713  
Fair Value $ 32,862  
% of Total
Investments at
Fair Value 0.35%  
Percentage of Net Assets 0.63%  
Spain    
Schedule of Investments [Line Items]    
Amortized Cost $ 31,515 $ 31,337
Fair Value $ 33,196 $ 29,958
% of Total
Investments at
Fair Value 0.36% 0.52%
Percentage of Net Assets 0.64% 0.87%
Taiwan    
Schedule of Investments [Line Items]    
Amortized Cost $ 46,557 $ 43,619
Fair Value $ 40,359 $ 42,321
% of Total
Investments at
Fair Value 0.43% 0.74%
Percentage of Net Assets 0.78% 1.22%
United Kingdom    
Schedule of Investments [Line Items]    
Amortized Cost $ 426,120 $ 240,099
Fair Value $ 444,188 $ 241,933
% of Total
Investments at
Fair Value 4.78% 4.23%
Percentage of Net Assets 8.57% 7.00%
United States    
Schedule of Investments [Line Items]    
Amortized Cost $ 8,068,735 $ 5,086,314
Fair Value $ 8,122,771 $ 4,942,898
% of Total
Investments at
Fair Value 87.44% 86.48%
Percentage of Net Assets 156.65% 143.05%
[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] 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").