v3.25.1
Financial Highlights (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Supplemental Data        
Net assets, end of period $ 16,269,592 $ 10,177,764 $ 14,521,602 $ 8,892,546
Class S common stock        
Per share data:        
Net asset value per share, beginning balance (in usd per share) $ 9.54 $ 9.48    
Results of operations:        
Net investment income (loss) (in usd per share) 0.21 0.25    
Net realized and unrealized gain (loss) (in usd per share) (0.07) (0.01)    
Net increase (decrease) in net assets resulting from operations (in usd per share) 0.14 0.24    
Shareholder distributions:        
Distributions from net investment income (in usd per share) (0.21) (0.22)    
Distributions in excess of net investment income (in usd per share) (0.01) 0    
Net decrease in net assets from shareholders' distributions (in usd per share) (0.22) (0.22)    
Total increase (decrease) in net assets (in usd per share) (0.08) 0.02    
Net asset value per share, ending balance (in usd per share) $ 9.46 $ 9.50    
Total return (in percent) 1.50% 2.50%    
Ratios        
Ratio of net expenses to average net assets 9.40% 11.20%    
Ratio of net investments income to average net assets 9.20% 11.00%    
Portfolio turnover rate 9.20% 3.70%    
Supplemental Data        
Weighted-average shares outstanding, basic (in shares) 553,435,797 356,127,221    
Shares outstanding, end of period (in shares) 570,264,051 371,785,601 515,664,737  
Maximum upfront sales load (in percent) 3.50%      
Ratio of total expenses to average net assets 9.40% 11.20%    
Class S common stock | Common equity investments        
Supplemental Data        
Net assets, end of period $ 5,394,691 $ 3,533,219    
Class D common stock        
Per share data:        
Net asset value per share, beginning balance (in usd per share) $ 9.55 $ 9.49    
Results of operations:        
Net investment income (loss) (in usd per share) 0.22 0.27    
Net realized and unrealized gain (loss) (in usd per share) (0.06) (0.01)    
Net increase (decrease) in net assets resulting from operations (in usd per share) 0.16 0.26    
Shareholder distributions:        
Distributions from net investment income (in usd per share) (0.22) (0.24)    
Distributions in excess of net investment income (in usd per share) (0.02) 0    
Net decrease in net assets from shareholders' distributions (in usd per share) (0.24) (0.24)    
Total increase (decrease) in net assets (in usd per share) (0.08) 0.02    
Net asset value per share, ending balance (in usd per share) $ 9.47 $ 9.51    
Total return (in percent) 1.70% 2.60%    
Ratios        
Ratio of net expenses to average net assets 8.70% 11.00%    
Ratio of net investments income to average net assets 9.70% 12.10%    
Portfolio turnover rate 9.20% 3.70%    
Supplemental Data        
Weighted-average shares outstanding, basic (in shares) 54,656,440 42,899,375    
Shares outstanding, end of period (in shares) 57,227,131 41,170,574 51,059,824  
Maximum upfront sales load (in percent) 1.50%      
Ratio of total expenses to average net assets 8.80% 11.00%    
Class D common stock | Common equity investments        
Supplemental Data        
Net assets, end of period $ 541,939 $ 391,735    
Class I common stock        
Per share data:        
Net asset value per share, beginning balance (in usd per share) $ 9.57 $ 9.50    
Results of operations:        
Net investment income (loss) (in usd per share) 0.23 0.27    
Net realized and unrealized gain (loss) (in usd per share) (0.07) 0    
Net increase (decrease) in net assets resulting from operations (in usd per share) 0.16 0.27    
Shareholder distributions:        
Distributions from net investment income (in usd per share) (0.23) (0.24)    
Distributions in excess of net investment income (in usd per share) (0.01) 0    
Net decrease in net assets from shareholders' distributions (in usd per share) (0.24) (0.24)    
Total increase (decrease) in net assets (in usd per share) (0.08) 0.03    
Net asset value per share, ending balance (in usd per share) $ 9.49 $ 9.53    
Total return (in percent) 1.70% 2.80%    
Ratios        
Ratio of net expenses to average net assets 8.60% 10.30%    
Ratio of net investments income to average net assets 10.10% 11.90%    
Portfolio turnover rate 9.20% 3.70%    
Supplemental Data        
Weighted-average shares outstanding, basic (in shares) 1,043,162,192 630,203,053    
Shares outstanding, end of period (in shares) 1,089,239,943 656,148,634 952,454,240  
Ratio of total expenses to average net assets 8.60% 10.30%    
Class I common stock | Common equity investments        
Supplemental Data        
Net assets, end of period $ 10,332,962 $ 6,252,810