v3.25.4
Transactions with Affiliate Companies - Schedule of Fair Value Roll Forward (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [1],[2] $ 4,008,973 $ 4,008,973    
PIK interest capitalized (cost)   21,033 $ 15,868 $ 7,694
Net realized gain (loss)   (5,329) 2,993 (403)
Net change in unrealized gain (loss)   (99,796) 1,085 1,459
Fair value at the ending   5,819,755 [3],[4] 4,008,973 [1],[2]  
Non-controlled affiliate company investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 145,755 [1],[2],[5] 145,755 [1],[2],[5] 75,314  
Transfers in (out)   24,365 37,878  
Purchases (cost)   162,739 47,633  
Sales and paydowns (cost)   (3,692) (3,594)  
PIK interest capitalized (cost)   3,294 651 57
Discount accretion   265 263  
Net realized gain (loss)   0 (38) 0
Net change in unrealized gain (loss)   (24,556) (12,352) 2,701
Fair value at the ending   308,170 [3],[4],[6] 145,755 [1],[2],[5] 75,314
Non-controlled affiliate company investments | Baystate Sewage Disposal, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   13,280    
Sales and paydowns (cost)   (10)    
PIK interest capitalized (cost)   0    
Discount accretion   4    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   167    
Fair value at the ending   13,441 0  
Non-controlled affiliate company investments | Born To Run, LLC.        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 2,308 2,308 0  
Transfers in (out)   0 10,588  
Purchases (cost)   190 1,579  
Sales and paydowns (cost)   (1) (36)  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 (38)  
Net change in unrealized gain (loss)   (624) (9,785)  
Fair value at the ending   1,873 2,308 0
Non-controlled affiliate company investments | ClearlyRated Capital (Class A Units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 5,500 5,500 5,500  
Transfers in (out)   0 0  
Purchases (cost)   3,000 0  
Sales and paydowns (cost)   (8) 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   3 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   558 0  
Fair value at the ending   9,053 5,500 5,500
Non-controlled affiliate company investments | Engineered Metal Solutions, Inc.        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   14,375    
Sales and paydowns (cost)   (248)    
PIK interest capitalized (cost)   (1)    
Discount accretion   7    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   350    
Fair value at the ending   14,483 0  
Non-controlled affiliate company investments | Jumpstart Holdco, Inc.        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   24,365    
Purchases (cost)   2,574    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   (21,760)    
Fair value at the ending   5,179 0  
Non-controlled affiliate company investments | MC Aviation Limited        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   22,809    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   794    
Fair value at the ending   23,603 0  
Non-controlled affiliate company investments | MC Voyager SPV II LLC (Equity Commitment)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   20,522    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   20,522 0  
Non-controlled affiliate company investments | Nastel Technologies, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 8,089 8,089 7,726  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   12 10  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   899 353  
Fair value at the ending   9,000 8,089 7,726
Non-controlled affiliate company investments | NFS Intermediate Holdco, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   53,255    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   7,395    
Fair value at the ending   60,650 0  
Non-controlled affiliate company investments | Second Avenue S F R Holdings I I L L C        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0 3,323  
Transfers in (out)     0  
Purchases (cost)     0  
Sales and paydowns (cost)     (3,323)  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     0  
Fair value at the ending     0 3,323
Non-controlled affiliate company investments | S F R Holdco, L L C        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 18,618 18,618 19,123  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   765 (505)  
Fair value at the ending   19,383 18,618 19,123
Non-controlled affiliate company investments | S F R Holdco 2, L L C        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 3,777 3,777 0  
Transfers in (out)   0 0  
Purchases (cost)   4,754 3,777  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (130) 0  
Fair value at the ending   8,401 3,777 0
Non-controlled affiliate company investments | SheerTrans Solutions, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 19,751 19,751 15,252  
Transfers in (out)   0 0  
Purchases (cost)   5,644 4,478  
Sales and paydowns (cost)   (1,311) (66)  
PIK interest capitalized (cost)   670 304  
Discount accretion   26 23  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (4,639) (240)  
Fair value at the ending   20,141 19,751 15,252
Non-controlled affiliate company investments | Summit Professional Education, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 28,065 28,065 0  
Transfers in (out)   0 0  
Purchases (cost)   7,759 27,915  
Sales and paydowns (cost)   (1,982) (50)  
PIK interest capitalized (cost)   0 0  
Discount accretion   42 17  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (1,792) 183  
Fair value at the ending   32,092 28,065 0
Non-controlled affiliate company investments | Triad Financial Services, Inc.        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 4,803 4,803 0  
Transfers in (out)   0 0  
Purchases (cost)   2,099 4,803  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   6,902 4,803 0
Non-controlled affiliate company investments | Whistler Parent Holdings III, Inc.        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 26,291 26,291 0  
Transfers in (out)   0 27,290  
Purchases (cost)   2,742 1,834  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   2,625 347  
Discount accretion   71 133  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (9,473) (3,313)  
Fair value at the ending   22,256 26,291 0
Non-controlled affiliate company investments | YBR OZ ECE, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   9,736    
Sales and paydowns (cost)   (11)    
PIK interest capitalized (cost)   0    
Discount accretion   6    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   39    
Fair value at the ending   9,770 0  
Non-controlled affiliate company investments | Zodega Landscaping, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 28,553 28,553 24,390  
Transfers in (out)   0 0  
Purchases (cost)   0 3,247  
Sales and paydowns (cost)   (121) (119)  
PIK interest capitalized (cost)   0 0  
Discount accretion   94 80  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   2,895 955  
Fair value at the ending   31,421 28,553 24,390
Investment, Identifier [Axis]: 300 N. Michigan Mezz, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[8] 1,000 1,000    
Fair value at the ending [2],[7],[8]     1,000  
Investment, Identifier [Axis]: 3C Buyer LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   2,653    
Investment, Identifier [Axis]: 3C Buyer LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   1,596    
Investment, Identifier [Axis]: 3C Buyer LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   812    
Investment, Identifier [Axis]: 3C Buyer LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   2,922    
Investment, Identifier [Axis]: 3C Buyer LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[11]   1,618    
Investment, Identifier [Axis]: 601 Lafayette Mezz LLC (Delayed Draw) 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 0 0    
Fair value at the ending [2],[8],[12],[13]     0  
Investment, Identifier [Axis]: 601 Lafayette Mezz LLC (Delayed Draw) 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 0 0    
Fair value at the ending [2],[8],[12],[13]     0  
Investment, Identifier [Axis]: 601 Lafayette Mezz LLC (Delayed Draw) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16]   2,571    
Investment, Identifier [Axis]: 601 Lafayette Mezz LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   20,813    
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[17] 2,947 2,947    
Fair value at the ending [2],[8],[17]     2,947  
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[17] 1,963 1,963    
Fair value at the ending [2],[8],[17]     1,963  
Investment, Identifier [Axis]: 95 Percent Buyer, LLC (385,027 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 948 948    
Fair value at the ending [2],[18]     $ 948  
Number of shares held [18]     385,027  
Investment, Identifier [Axis]: 95 Percent Buyer, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 806    
Number of shares held [19]   385,027    
Investment, Identifier [Axis]: 95 Percent Buyer, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: 95 Percent Buyer, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21],[22] 15,581 15,581    
Fair value at the ending   15,581 [4],[9],[11],[23] 15,581 [2],[20],[21],[22]  
Investment, Identifier [Axis]: A360, Inc. (838 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 888 888    
Fair value at the ending [2]     $ 888  
Number of shares held     838  
Investment, Identifier [Axis]: A360, Inc. (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 900    
Number of shares held   838    
Investment, Identifier [Axis]: A360, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   444 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: A360, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   103 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: A360, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 10,343 10,343    
Fair value at the ending   10,421 [4],[25] 10,343 [2],[24]  
Investment, Identifier [Axis]: AMS Parent, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 10,943 10,943    
Fair value at the ending   14,682 [4],[9],[26] 10,943 [2]  
Investment, Identifier [Axis]: API Holdings III Corp. | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,398 1,398    
Fair value at the ending   1,723 [4] 1,398 [2]  
Investment, Identifier [Axis]: API Holdings III Corp. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 156 156    
Fair value at the ending   170 [4] 156 [2]  
Investment, Identifier [Axis]: ASG II, LLC 1 | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 14,981 14,981    
Fair value at the ending   14,981 [4],[27] 14,981 [2],[7]  
Investment, Identifier [Axis]: ASG II, LLC 2 | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,247 2,247    
Fair value at the ending   2,247 [4] 2,247 [2]  
Investment, Identifier [Axis]: ASG III, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 4,255 4,255    
Fair value at the ending   6,134 [4],[14],[15] 4,255 [2],[12],[13]  
Investment, Identifier [Axis]: ASG III, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: ASG III, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[24] 20,200 20,200    
Fair value at the ending   7,484 [4],[11],[28] 20,200 [2],[7],[24]  
Investment, Identifier [Axis]: ASG III, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 8,505 8,505    
Fair value at the ending   3,151 [4],[26],[28] 8,505 [2]  
Investment, Identifier [Axis]: Accelevation LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   3,371    
Investment, Identifier [Axis]: Accelevation LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   666    
Investment, Identifier [Axis]: Accelevation LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[25]   13,965    
Investment, Identifier [Axis]: Accelevation LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   984    
Investment, Identifier [Axis]: Accelya US Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[29]   8,374    
Investment, Identifier [Axis]: Acquia Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 329 329    
Fair value at the ending   588 [4] 329 [2],[12]  
Investment, Identifier [Axis]: Acquia Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 15,429 15,429    
Fair value at the ending   15,430 [4],[23] 15,429 [2],[22]  
Investment, Identifier [Axis]: Acquia Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[30] 3,092 3,092    
Fair value at the ending   3,092 [4],[10] 3,092 [2],[30]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC (314,584 Class A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 0 0    
Fair value at the ending [2],[18]     $ 0  
Number of shares held [18]     314,584  
Investment, Identifier [Axis]: Adept AG Holdings, LLC (325 Series L units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 0 0    
Fair value at the ending [2],[18]     $ 0  
Number of shares held [18]     325  
Investment, Identifier [Axis]: Adept AG Holdings, LLC (45,874 Series B units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 0 0    
Fair value at the ending [2],[18]     $ 0  
Number of shares held [18]     45,874  
Investment, Identifier [Axis]: Adept AG Holdings, LLC (67,283 Series C preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 0 0    
Fair value at the ending [2],[18]     $ 0  
Number of shares held [18]     67,283  
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Class A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   314,584    
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Series B units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   45,874    
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Series C preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   67,283    
Investment, Identifier [Axis]: Adept AG Holdings, LLC (Series L units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   325    
Investment, Identifier [Axis]: Adept AG Holdings, LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[31] 1,674 $ 1,674    
Fair value at the ending   1,644 [4],[16],[32],[33] $ 1,674 [2],[8],[31]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[31] 5,228 5,228    
Fair value at the ending   5,644 [4],[16],[32],[33] 5,228 [2],[8],[31]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[31] 2,037 2,037    
Fair value at the ending   0 [4],[16],[32],[33] 2,037 [2],[8],[31]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 4,402 4,402    
Fair value at the ending   4,533 [4],[33] 4,402 [2]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC 3 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[31],[34] 0 0    
Fair value at the ending   0 [4],[16],[32],[33] 0 [2],[8],[31],[34]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC 4 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,409 1,409    
Fair value at the ending   1,317 [4],[33] 1,409 [2]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC 5 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,715 1,715    
Fair value at the ending   0 [4],[33] 1,715 [2]  
Investment, Identifier [Axis]: Adept AG Holdings, LLC 6 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[34] 0 0    
Fair value at the ending   0 [4],[33] 0 [2],[34]  
Investment, Identifier [Axis]: Affiliated Entity | BTR Opco LLC (fka Born to Run, LLC) (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[12],[13],[35] 1,131 1,131    
Fair value at the ending [2],[5],[12],[13],[35]     1,131  
Investment, Identifier [Axis]: Affiliated Entity | Nastel Technologies, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[12] 0 0    
Fair value at the ending [2],[5],[12]     0  
Investment, Identifier [Axis]: Affiliated Entity | Nastel Technologies, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[22] 3,478 3,478    
Fair value at the ending [2],[5],[22]     3,478  
Investment, Identifier [Axis]: Affiliated Entity | SheerTrans Solutions, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[12] 998 998    
Fair value at the ending [2],[5],[12]     998  
Investment, Identifier [Axis]: Affiliated Entity | SheerTrans Solutions, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5] 5,261 5,261    
Fair value at the ending [2],[5]     5,261  
Investment, Identifier [Axis]: Affiliated Entity | SheerTrans Solutions, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5] 1,503 1,503    
Fair value at the ending [2],[5]     1,503  
Investment, Identifier [Axis]: Affiliated Entity | Summit Professional Education, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[12] 1,145 1,145    
Fair value at the ending [2],[5],[12]     1,145  
Investment, Identifier [Axis]: Affiliated Entity | Summit Professional Education, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[24] 10,244 10,244    
Fair value at the ending [2],[5],[24]     10,244  
Investment, Identifier [Axis]: Affiliated Entity | Whistler Parent Holdings III, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[12],[13] 1,980 1,980    
Fair value at the ending [2],[5],[12],[13]     1,980  
Investment, Identifier [Axis]: Affiliated Entity | Whistler Parent Holdings III, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[12] 1,539 1,539    
Fair value at the ending [2],[5],[12]     1,539  
Investment, Identifier [Axis]: Affiliated Entity | Zodega Landscaping, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[12] 992 992    
Fair value at the ending [2],[5],[12]     992  
Investment, Identifier [Axis]: Affiliated Entity | Zodega Landscaping, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[7] 12,431 12,431    
Fair value at the ending [2],[5],[7]     12,431  
Investment, Identifier [Axis]: Affiliated Entity | BTR Opco LLC (fka Born To Run, LLC) (659 Class A common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5] 0 0    
Fair value at the ending [2],[5]     $ 0  
Number of shares held [5]     659  
Investment, Identifier [Axis]: Affiliated Entity | BTR Opco LLC (fka Born to Run, LLC) 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[35] 1,177 1,177    
Fair value at the ending [2],[5],[35]     $ 1,177  
Investment, Identifier [Axis]: Affiliated Entity | BTR Opco LLC (fka Born to Run, LLC) 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[35] 0 0    
Fair value at the ending [2],[5],[35]     0  
Investment, Identifier [Axis]: Affiliated Entity | ClearlyRated Capital, LLC (5,500,000 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[18] 5,500 5,500    
Fair value at the ending [2],[5],[18]     $ 5,500  
Number of shares held [5],[18]     5,500,000  
Investment, Identifier [Axis]: Affiliated Entity | Nastel Technologies, LLC (3,408 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[18] 4,611 4,611    
Fair value at the ending [2],[5],[18]     $ 4,611  
Number of shares held [5],[18]     3,408  
Investment, Identifier [Axis]: Affiliated Entity | SFR Holdco 2, LLC (24.4% of equity commitments) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[8] $ 1,510 1,510    
Fair value at the ending [2],[5],[8]     $ 1,510  
Percentage of equity commitments [5],[8] 24.40%      
Investment, Identifier [Axis]: Affiliated Entity | SFR Holdco 2, LLC (Delayed Draw) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[8],[12],[13] $ 2,267 2,267    
Fair value at the ending [2],[5],[8],[12],[13]     2,267  
Investment, Identifier [Axis]: Affiliated Entity | SFR Holdco, LLC (10.5% of equity commitments) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[8] $ 3,597 3,597    
Fair value at the ending [2],[5],[8]     3,597  
Percentage of equity commitments [5],[8] 10.50%      
Investment, Identifier [Axis]: Affiliated Entity | SFR Holdco, LLC (13.9% of equity commitments) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[8] $ 4,797 4,797    
Fair value at the ending [2],[5],[8]     4,797  
Percentage of equity commitments [5],[8] 13.90%      
Investment, Identifier [Axis]: Affiliated Entity | SFR Holdco, LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[8] $ 5,593 5,593    
Fair value at the ending [2],[5],[8]     5,593  
Investment, Identifier [Axis]: Affiliated Entity | SFR Holdco, LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[8] 4,631 4,631    
Fair value at the ending [2],[5],[8]     4,631  
Investment, Identifier [Axis]: Affiliated Entity | SheerTrans Solutions, LLC (12,233,889 preferred interests) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[18] 11,989 11,989    
Fair value at the ending [2],[5],[18]     $ 11,989  
Number of shares held [5],[18]     12,233,889  
Investment, Identifier [Axis]: Affiliated Entity | Summit Professional Education, LLC (16,676 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[18] 16,676 16,676    
Fair value at the ending [2],[5],[18]     $ 16,676  
Number of shares held [5],[18]     16,676  
Investment, Identifier [Axis]: Affiliated Entity | Triad Financial Services, Inc. ($4,803 of $41,855 equity commitment) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[8],[36] 4,803 4,803    
Fair value at the ending [2],[5],[8],[36]     $ 4,803  
Amount of total commitment [5],[8],[36] 4,803      
Total equity investment [5],[8],[36]     41,855  
Investment, Identifier [Axis]: Affiliated Entity | Whistler Parent Holdings III, Inc. (116,083 Series B preferred stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5] 0 0    
Fair value at the ending [2],[5]     $ 0  
Number of shares held [5]     116,083  
Investment, Identifier [Axis]: Affiliated Entity | Whistler Parent Holdings III, Inc. (518,970 Series A preferred stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5] 0 0    
Fair value at the ending [2],[5]     $ 0  
Number of shares held [5]     518,970  
Investment, Identifier [Axis]: Affiliated Entity | Whistler Parent Holdings III, Inc. | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5] 22,772 22,772    
Fair value at the ending [2],[5]     $ 22,772  
Investment, Identifier [Axis]: Affiliated Entity | Zodega Landscaping, LLC (146,757 preferred interests) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[5],[37] 15,130 15,130    
Fair value at the ending [2],[5],[37]     $ 15,130  
Number of shares held [5],[37]     146,757  
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 727    
Number of shares held   608,696    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 1,400    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Air Transport Components Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   7,000    
Investment, Identifier [Axis]: Aligned Exteriors Group Holdco, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: Aligned Exteriors Group Holdco, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Aligned Exteriors Group Holdco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 13,755 13,755    
Fair value at the ending   13,721 [4],[25] 13,755 [2]  
Investment, Identifier [Axis]: Alpine Pet OpCo, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Alpine Pet OpCo, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Alpine Pet OpCo, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   21,725    
Investment, Identifier [Axis]: Alta Pest Control, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   238    
Investment, Identifier [Axis]: Alta Pest Control, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Alta Pest Control, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   3,940    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   819    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26]   5,770    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   4,093    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   2,547    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   2,612    
Investment, Identifier [Axis]: Ambient Enterprises Holdco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 24,309 24,309    
Fair value at the ending   20,757 [4],[26],[28] 24,309 [2]  
Investment, Identifier [Axis]: American Auto Auction Group, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   9,824    
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[12],[13] 2,742 2,742    
Fair value at the ending [2],[7],[12],[13]     2,742  
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 252 252    
Fair value at the ending   265 [4],[14] 252 [2],[12]  
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC (Warrant to purchase the equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   0    
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC (warrant to purchase up to 0.4% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 68 68    
Fair value at the ending [2]     68  
Investment, Identifier [Axis]: American Broadband and Telecommunications Company LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   2,779    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,000 2,000    
Fair value at the ending   0 [4],[14],[15] 2,000 [2],[12],[13]  
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   16,362 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21] 9,830 9,830    
Fair value at the ending   9,784 [4],[11],[27] 9,830 [2],[7],[21]  
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,702 3,702    
Fair value at the ending   3,685 [4],[9] 3,702 [2]  
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,703    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   5,760    
Investment, Identifier [Axis]: Animal Dermatology Group, Inc. 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   19,243    
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC (fka Sandvine Corporation) (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   $ 0    
Number of shares held [27]   23,212    
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC (fka Sandvine Corporation) (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   $ 88    
Number of shares held [27]   28,198    
Investment, Identifier [Axis]: AppLogic Networks OpCo I LLC (fka Sandvine Corporation) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   $ 350    
Investment, Identifier [Axis]: Appriss Health, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Appriss Health, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 6,354 6,354    
Fair value at the ending   3,169 [4],[23] 6,354 [2],[22]  
Investment, Identifier [Axis]: Aptean, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 143 143    
Fair value at the ending [2],[12],[13]     143  
Investment, Identifier [Axis]: Aptean, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     0  
Investment, Identifier [Axis]: Aptean, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 8,736 8,736    
Fair value at the ending [2],[24]     8,736  
Investment, Identifier [Axis]: Aras Corporation (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 278 278    
Fair value at the ending   254 [4],[14] 278 [2],[12]  
Investment, Identifier [Axis]: Aras Corporation | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21] 5,377 5,377    
Fair value at the ending   5,299 [4],[11],[27] 5,377 [2],[7],[21]  
Investment, Identifier [Axis]: Arax Midco, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 0 0    
Fair value at the ending   167 [4],[14],[15],[16] 0 [2],[8],[12],[13]  
Investment, Identifier [Axis]: Arax Midco, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12] 0 0    
Fair value at the ending   181 [4],[14],[16] 0 [2],[8],[12]  
Investment, Identifier [Axis]: Arax Midco, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[11],[16]   13,400    
Investment, Identifier [Axis]: Arax Midco, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[16]   4,455    
Investment, Identifier [Axis]: Arax Midco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[21] 11,503 11,503    
Fair value at the ending [2],[8],[21]     11,503  
Investment, Identifier [Axis]: Archtop Fiber Intermediate LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   5,865    
Investment, Identifier [Axis]: Archtop Fiber Intermediate LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   21,992    
Investment, Identifier [Axis]: Arcserve Cayman GP LLC (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   157,895    
Investment, Identifier [Axis]: Arcserve Cayman GP LLC (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   294,118    
Investment, Identifier [Axis]: Arcserve Cayman GP LLC (fka Arcstor Midco, LLC) (157,895 Class A common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 $ 0    
Fair value at the ending [2]     $ 0  
Number of shares held     157,895  
Investment, Identifier [Axis]: Arcserve Cayman GP LLC (fka Arcstor Midco, LLC) (294,118 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     294,118  
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 1,960    
Number of shares held   157,895    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 3,651    
Number of shares held   294,118    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[33]   $ 882    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (fka Arcstor Midco, LLC) (157,895 Class A common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,474 1,474    
Fair value at the ending [2]     $ 1,474  
Number of shares held     157,895  
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (fka Arcstor Midco, LLC) (294,118 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,745 2,745    
Fair value at the ending [2]     $ 2,745  
Number of shares held     294,118  
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (fka Arcstor Midco, LLC) (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13],[35] 882 882    
Fair value at the ending [2],[12],[13],[35]     $ 882  
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (fka Arcstor Midco, LLC) 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 0 0    
Fair value at the ending [2],[35]     0  
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (fka Arcstor Midco, LLC) 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 468 468    
Fair value at the ending [2],[35]     468  
Investment, Identifier [Axis]: Arcserve Cayman Opco LP (fka Arcstor Midco, LLC) 3 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 478 478    
Fair value at the ending [2],[35]     478  
Investment, Identifier [Axis]: Arcserve Cayman Opco LP 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   0    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   512    
Investment, Identifier [Axis]: Arcserve Cayman Opco LP 3 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   524    
Investment, Identifier [Axis]: Argano, LLC (62,574 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 533 533    
Fair value at the ending [2],[18]     $ 533  
Number of shares held [18]     62,574  
Investment, Identifier [Axis]: Arizona Natural Resources, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 1,776 1,776    
Fair value at the ending [2],[12]     $ 1,776  
Investment, Identifier [Axis]: Arizona Natural Resources, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21] 13,531 13,531    
Fair value at the ending [2],[20],[21]     13,531  
Investment, Identifier [Axis]: Arizona Natural Resources, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 2,484 2,484    
Fair value at the ending [2],[21]     2,484  
Investment, Identifier [Axis]: Arizona Natural Resources, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 6,739 6,739    
Fair value at the ending [2],[7]     6,739  
Investment, Identifier [Axis]: Arizona Natural Resources, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 2,910 2,910    
Fair value at the ending [2],[22]     2,910  
Investment, Identifier [Axis]: Ascent Midco, LLC (725,806 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 629 629    
Fair value at the ending [2],[18]     $ 629  
Number of shares held [18]     725,806  
Investment, Identifier [Axis]: Ascent Midco, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 608    
Number of shares held [19]   725,806    
Investment, Identifier [Axis]: Assembly Buyer, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 0    
Investment, Identifier [Axis]: Assembly Buyer, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Assembly Buyer, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Assembly Buyer, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[28]   16,000    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[32]   11,388    
Investment, Identifier [Axis]: Asset Reliability Bidco, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   20,147    
Investment, Identifier [Axis]: Aston US Finco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[17],[38] 9,148 9,148    
Fair value at the ending [2],[8],[17],[38]     $ 9,148  
Investment, Identifier [Axis]: Attom Intermediate Holdco, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   181    
Investment, Identifier [Axis]: Attom Intermediate Holdco, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Attom Intermediate Holdco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[11]   32,474    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   3,982    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[39]   2,935    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[40]   5,876    
Investment, Identifier [Axis]: Automated Industrial Robotics US HoldCo Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   5,792    
Investment, Identifier [Axis]: Avalara, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     0  
Investment, Identifier [Axis]: Avalara, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 10,075 10,075    
Fair value at the ending [2],[22]     10,075  
Investment, Identifier [Axis]: Avison Young (USA) Inc. (1,521 Class F common shares) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 0 0    
Fair value at the ending [2],[8],[41]     $ 0  
Number of shares held [8],[41]     1,521  
Investment, Identifier [Axis]: Avison Young (USA) Inc. (2,036,442 Class A preferred shares) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[35],[41] 774 774    
Fair value at the ending [2],[8],[35],[41]     $ 774  
Number of shares held [8],[35],[41]     2,036,442  
Investment, Identifier [Axis]: Avison Young (USA) Inc. (Class A preferred shares) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[33],[42]   $ 0    
Number of shares held [16],[33],[42]   2,036,442    
Investment, Identifier [Axis]: Avison Young (USA) Inc. (Class F common shares) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[42]   $ 0    
Number of shares held [16],[42]   1,521    
Investment, Identifier [Axis]: Avison Young (USA) Inc. 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[35],[41] 1,495 $ 1,495    
Fair value at the ending   961 [4],[16],[33],[42] $ 1,495 [2],[8],[35],[41]  
Investment, Identifier [Axis]: Avison Young (USA) Inc. 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[35],[41] 380 380    
Fair value at the ending   155 [4],[16],[33],[42] 380 [2],[8],[35],[41]  
Investment, Identifier [Axis]: Avison Young (USA) Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[35],[41] 768 768    
Fair value at the ending   704 [4],[16],[33],[42] 768 [2],[8],[35],[41]  
Investment, Identifier [Axis]: B2B Industrial Products LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 9,469 9,469    
Fair value at the ending   9,356 [4],[27] 9,469 [2],[7]  
Investment, Identifier [Axis]: B2B Industrial Products LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 2,191 2,191    
Fair value at the ending   2,166 [4],[27] 2,191 [2],[7]  
Investment, Identifier [Axis]: BLP Buyer, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 1,427 1,427    
Fair value at the ending   5,225 [4],[14] 1,427 [2],[12]  
Investment, Identifier [Axis]: BLP Buyer, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[21],[24],[30] 50,098 50,098    
Fair value at the ending   49,250 [4],[9],[10],[11],[25],[27] 50,098 [2],[7],[20],[21],[24],[30]  
Investment, Identifier [Axis]: BLP Buyer, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 1,909 1,909    
Fair value at the ending   1,876 [4],[27] 1,909 [2],[7]  
Investment, Identifier [Axis]: BLP Buyer, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 6,027 6,027    
Fair value at the ending   5,925 [4],[26] 6,027 [2]  
Investment, Identifier [Axis]: BLP Buyer, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   1,083    
Investment, Identifier [Axis]: BLP Buyer, Inc. 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   1,505    
Investment, Identifier [Axis]: BTR Opco LLC (Class A common units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   0 0  
Investment, Identifier [Axis]: BTR Opco LLC (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 0    
Number of shares held   622    
Investment, Identifier [Axis]: BTR Opco LLC (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,131 $ 1,131    
Transfers in (out)   0    
Purchases (cost)   190    
Sales and paydowns (cost)   (1)    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   158    
Fair value at the ending   1,478 1,131  
Investment, Identifier [Axis]: BTR Opco LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14],[15],[33]   1,478    
Investment, Identifier [Axis]: BTR Opco LLC (fka Born To Run, LLC) (Class A common units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0 0  
Transfers in (out)     677  
Purchases (cost)     0  
Sales and paydowns (cost)     0  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     (38)  
Net change in unrealized gain (loss)     (639)  
Fair value at the ending     $ 0 0
Number of units held   622 659  
Investment, Identifier [Axis]: BTR Opco LLC (fka Born To Run, LLC) 1        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,177 $ 1,177 $ 0  
Transfers in (out)     1,611  
Purchases (cost)     81  
Sales and paydowns (cost)     0  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     (515)  
Fair value at the ending     1,177 0
Investment, Identifier [Axis]: BTR Opco LLC (fka Born To Run, LLC) 2        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0 0  
Transfers in (out)     8,300  
Purchases (cost)     418  
Sales and paydowns (cost)     (2)  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     (8,716)  
Fair value at the ending     0 0
Investment, Identifier [Axis]: BTR Opco LLC (fka Born To Run, LLC) 3        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,131 1,131 0  
Transfers in (out)     0  
Purchases (cost)     1,080  
Sales and paydowns (cost)     (34)  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     85  
Fair value at the ending     1,131 0
Investment, Identifier [Axis]: BTR Opco LLC 1        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,177 1,177    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   (782)    
Fair value at the ending   395 1,177  
Investment, Identifier [Axis]: BTR Opco LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[33]   395    
Investment, Identifier [Axis]: BTR Opco LLC 2        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   0 0  
Investment, Identifier [Axis]: BTR Opco LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[33]   0    
Investment, Identifier [Axis]: BTRS Holdings Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 400 400    
Fair value at the ending   2,577 [4],[14] 400 [2],[12]  
Investment, Identifier [Axis]: BTRS Holdings Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 10,000 10,000    
Fair value at the ending [2],[21]     10,000  
Investment, Identifier [Axis]: BTRS Holdings Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 842 842    
Fair value at the ending [2]     842  
Investment, Identifier [Axis]: BTRS Holdings Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[28]   26,398    
Investment, Identifier [Axis]: BW 51f, L.P. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 9,000 9,000    
Fair value at the ending   9,000 [4],[16] 9,000 [2],[8]  
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16],[43]   4,863    
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[16],[43]   521    
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[11],[27]   36,507    
Investment, Identifier [Axis]: Band Finance LLC and Anderson Global Luxembourg SCSp 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[43]   13,908    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   4,312    
Sales and paydowns (cost)   (10)    
PIK interest capitalized (cost)   0    
Discount accretion   4    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   83    
Fair value at the ending   4,389 0  
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Class A-1 preferred units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   8,842    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   84    
Fair value at the ending   $ 8,926 0  
Number of units held   8,841,724    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Class A-1 preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 8,926    
Number of shares held   8,841,724    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   126    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   126 0  
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14],[15]   126    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   0 0  
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   0    
Investment, Identifier [Axis]: Baystate Sewage Disposal, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[9]   4,389    
Investment, Identifier [Axis]: Beckway Acquisition, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Beckway Acquisition, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Beckway Acquisition, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,000    
Investment, Identifier [Axis]: Bench Walk Lead, LLC (Commitment to purchase the equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19]   1,513    
Investment, Identifier [Axis]: Bench Walk Lead, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16]   4,181    
Investment, Identifier [Axis]: Bench Walk Lead, LLC (commitment to purchase up to 3.2% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18] 1,638 1,638    
Fair value at the ending [2],[8],[18]     1,638  
Investment, Identifier [Axis]: Bench Walk Lead, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 28,256 28,256    
Fair value at the ending   27,114 [4],[16] 28,256 [2],[8]  
Investment, Identifier [Axis]: Bench Walk Lead, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 1,671 1,671    
Fair value at the ending   1,603 [4],[16] 1,671 [2],[8]  
Investment, Identifier [Axis]: Bloomerang, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   1,614 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Bloomerang, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 240 240    
Fair value at the ending   1,600 [4],[14] 240 [2],[12]  
Investment, Identifier [Axis]: Bloomerang, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21],[24] 15,989 15,989    
Fair value at the ending   16,141 [4],[11],[25],[27],[28] 15,989 [2],[7],[21],[24]  
Investment, Identifier [Axis]: Bluesight, Inc. (282,635 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     282,635  
Investment, Identifier [Axis]: Bluesight, Inc. (528 Class A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 528 528    
Fair value at the ending [2]     $ 528  
Number of shares held     528  
Investment, Identifier [Axis]: Bluesight, Inc. (Class A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 528    
Number of shares held   528    
Investment, Identifier [Axis]: Bluesight, Inc. (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 227    
Number of shares held   282,635    
Investment, Identifier [Axis]: Bluesight, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Bluesight, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22],[24] 30,087 30,087    
Fair value at the ending   3,936 [4],[26] 30,087 [2],[21],[22],[24]  
Investment, Identifier [Axis]: Bluesight, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,924 3,924    
Fair value at the ending   26,243 [4],[25],[28] 3,924 [2]  
Investment, Identifier [Axis]: Bluesight, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 26,163 26,163    
Fair value at the ending [2],[24]     26,163  
Investment, Identifier [Axis]: Bluesight, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[23],[25]   30,179    
Investment, Identifier [Axis]: Bonterra LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 1,151 1,151    
Fair value at the ending [2],[12]     1,151  
Investment, Identifier [Axis]: Bonterra LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 18,875 18,875    
Fair value at the ending [2],[21],[22]     18,875  
Investment, Identifier [Axis]: Bonterra LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,101 3,101    
Fair value at the ending [2]     3,101  
Investment, Identifier [Axis]: Brickell Bay Acquisition Corp. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 2,479 2,479    
Fair value at the ending [2],[20],[22]     2,479  
Investment, Identifier [Axis]: Brickell Bay Acquisition Corp. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 6,898 6,898    
Fair value at the ending [2],[7]     6,898  
Investment, Identifier [Axis]: Buck Design LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   3,512    
Investment, Identifier [Axis]: Buck Design LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   798    
Investment, Identifier [Axis]: Buck Design LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[10]   9,950    
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 4,395 4,395    
Fair value at the ending   4,143 [4],[27] 4,395 [2],[7]  
Investment, Identifier [Axis]: CE Intermediate, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21],[22],[30] 37,740 37,740    
Fair value at the ending   35,013 [4],[10],[11],[23],[27] 37,740 [2],[7],[21],[22],[30]  
Investment, Identifier [Axis]: CGI Automated Manufacturing, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 8,485 8,485    
Fair value at the ending   8,710 [4],[27] 8,485 [2],[7]  
Investment, Identifier [Axis]: CGI Automated Manufacturing, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 5,399 5,399    
Fair value at the ending   5,542 [4],[27] 5,399 [2],[7]  
Investment, Identifier [Axis]: CGI Automated Manufacturing, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 10,331 10,331    
Fair value at the ending   10,605 [4],[27] 10,331 [2],[7]  
Investment, Identifier [Axis]: Calabrio, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 413 413    
Fair value at the ending [2],[12]     413  
Investment, Identifier [Axis]: Calabrio, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 1,170 1,170    
Fair value at the ending [2],[22]     1,170  
Investment, Identifier [Axis]: Calabrio, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 7,960 7,960    
Fair value at the ending [2],[22]     7,960  
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. (568,181 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 568 568    
Fair value at the ending [2],[18]     $ 568  
Number of shares held [18]     568,181  
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 568    
Number of shares held [19]   568,181    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 0    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   4,863    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   16,986    
Investment, Identifier [Axis]: Calienger Holdings, L.L.C. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 4,912 4,912    
Fair value at the ending [2],[20]     4,912  
Investment, Identifier [Axis]: Caputo Cheese Interco Corp. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 2,691    
Number of shares held   2,777,778    
Investment, Identifier [Axis]: Caputo Cheese Interco Corp. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   $ 750    
Investment, Identifier [Axis]: Caputo Cheese Interco Corp. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   15,000    
Investment, Identifier [Axis]: Caravel Autism Health, LLC (3,600 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 3,600 3,600    
Fair value at the ending [2],[18]     $ 3,600  
Number of shares held [18]     3,600  
Investment, Identifier [Axis]: Caravel Autism Health, LLC (4,011 Class B units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 521 521    
Fair value at the ending [2],[18]     $ 521  
Number of shares held [18]     4,011  
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 3,213    
Number of shares held [19]   3,781    
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Class B units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   4,011    
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   3,609 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: Caravel Autism Health, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Caravel Autism Health, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[25],[27],[28]   17,682    
Investment, Identifier [Axis]: Caravel Autism Health, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   7,635    
Investment, Identifier [Axis]: Caravel Autism Health, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[24] 18,135 18,135    
Fair value at the ending [2],[7],[24]     18,135  
Investment, Identifier [Axis]: Cardinal Parent, Inc | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   9,622    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (4,177 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[44] 4,178 4,178    
Fair value at the ending [2],[44]     $ 4,178  
Number of shares held [44]     4,177  
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[45]   $ 4,453    
Number of shares held [45]   4,177    
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   232 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Delayed Draw) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   358 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Catalyst Data Holdings, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 16,252 16,252    
Fair value at the ending   16,500 [4],[10],[28] 16,252 [2]  
Investment, Identifier [Axis]: Cdata Software, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Cdata Software, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,340 2,340    
Fair value at the ending   2,343 [4],[14],[15] 2,340 [2],[12],[13]  
Investment, Identifier [Axis]: Cdata Software, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Cdata Software, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[24] 45,950 45,950    
Fair value at the ending   46,007 [4],[11],[23],[25],[28] 45,950 [2],[21],[24]  
Investment, Identifier [Axis]: Central Moloney, LLC (6,029 Class A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,509 3,509    
Fair value at the ending [2]     $ 3,509  
Number of shares held     6,029  
Investment, Identifier [Axis]: Central Moloney, LLC (6,029 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 10,189 10,189    
Fair value at the ending [2]     $ 10,189  
Number of shares held     6,029  
Investment, Identifier [Axis]: Central Moloney, LLC (63 Class G units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 66 66    
Fair value at the ending [2]     $ 66  
Number of shares held     63  
Investment, Identifier [Axis]: Central Moloney, LLC (Class A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 3,507    
Number of shares held   6,029    
Investment, Identifier [Axis]: Central Moloney, LLC (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 32,227    
Number of shares held   6,029    
Investment, Identifier [Axis]: Central Moloney, LLC (Class G units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 296    
Number of shares held   63    
Investment, Identifier [Axis]: Chess.com, LLC (5 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 100 $ 100    
Fair value at the ending [2],[18]     $ 100  
Number of shares held [18]     5  
Investment, Identifier [Axis]: Chess.com, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 154    
Number of shares held [19]   5    
Investment, Identifier [Axis]: Chess.com, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Chess.com, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 12,611 12,611    
Fair value at the ending   11,711 [4],[9],[23] 12,611 [2],[20],[22]  
Investment, Identifier [Axis]: Cleanova US Holdings LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[46]   14,321    
Investment, Identifier [Axis]: ClearCapital Holdings, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: ClearCapital Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: ClearCapital Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[27]   7,231    
Investment, Identifier [Axis]: ClearlyRated Capital, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   1,407    
Sales and paydowns (cost)   (8)    
PIK interest capitalized (cost)   0    
Discount accretion   3    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   25    
Fair value at the ending   1,427 0  
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Class A units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 5,500 5,500 5,500  
Transfers in (out)   0 0  
Purchases (cost)   1,593 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   533 0  
Fair value at the ending   $ 7,626 $ 5,500 5,500
Number of units held   7,093,224 5,500,000  
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[19]   $ 7,626    
Number of shares held [19]   7,093,224    
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   0 $ 0  
Investment, Identifier [Axis]: ClearlyRated Capital, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14],[15]   0    
Investment, Identifier [Axis]: ClearlyRated Capital, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   1,427    
Investment, Identifier [Axis]: Cloud for Good, LLC (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 5,100    
Number of shares held   5,000,000    
Investment, Identifier [Axis]: Cloud for Good, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 0    
Investment, Identifier [Axis]: Cloud for Good, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Cloud for Good, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10]   17,369    
Investment, Identifier [Axis]: Clydesdale Holdings, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,302 2,302    
Fair value at the ending [2],[12],[13]     2,302  
Investment, Identifier [Axis]: Clydesdale Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 4,977 4,977    
Fair value at the ending   4,900 [4],[27] 4,977 [2],[7]  
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[22] 4,977 4,977    
Fair value at the ending   4,900 [4],[23],[27] 4,977 [2],[7],[22]  
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[30] 14,531 14,531    
Fair value at the ending   14,396 [4],[9],[10],[27] 14,531 [2],[7],[20],[30]  
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 20,666 20,666    
Fair value at the ending   20,479 [4],[9],[25] 20,666 [2],[24]  
Investment, Identifier [Axis]: Clydesdale Holdings, LLC 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,199    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   884    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[11]   13,331    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11]   2,447    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   6,640    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[23]   2,868    
Investment, Identifier [Axis]: Cohere Beauty, Phoenix LLC (fka Arizona Natural Resources, LLC) 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   2,725    
Investment, Identifier [Axis]: Commscope, Inc | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[17] 3,053 3,053    
Fair value at the ending [2],[8],[17]     3,053  
Investment, Identifier [Axis]: Cosmos Bidco, Inc. (2,250,000 Class A Membership Interest) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,780 2,780    
Fair value at the ending [2]     $ 2,780  
Number of shares held     2,250,000  
Investment, Identifier [Axis]: Cosmos Bidco, Inc. (Class A Membership Interest) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 2,554    
Number of shares held   2,250,000    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 1,729 $ 1,729    
Fair value at the ending   0 [4],[14],[15] $ 1,729 [2],[12],[13]  
Investment, Identifier [Axis]: Cosmos Bidco, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22],[24] 36,306 36,306    
Fair value at the ending   36,126 [4],[11],[23],[25] 36,306 [2],[21],[22],[24]  
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 6,807 6,807    
Fair value at the ending   6,774 [4],[26],[28] 6,807 [2]  
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[28]   18,893    
Investment, Identifier [Axis]: Cosmos Bidco, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   4,129    
Investment, Identifier [Axis]: Cpex Purchaser, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,168 2,168    
Fair value at the ending   2,743 [4],[14],[15] 2,168 [2],[12],[13]  
Investment, Identifier [Axis]: Cpex Purchaser, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   12,194 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Cpex Purchaser, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[23],[28]   35,964    
Investment, Identifier [Axis]: Cpex Purchaser, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[28]   6,441    
Investment, Identifier [Axis]: Cpex Purchaser, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[28]   4,057    
Investment, Identifier [Axis]: Cpex Purchaser, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 36,216 36,216    
Fair value at the ending [2],[21],[22]     36,216  
Investment, Identifier [Axis]: Crownpeak Technology, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 125 125    
Fair value at the ending [2]     125  
Investment, Identifier [Axis]: Crownpeak Technology, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 1,022 1,022    
Fair value at the ending [2],[22]     1,022  
Investment, Identifier [Axis]: Crownpeak Technology, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 15 15    
Fair value at the ending [2],[22]     15  
Investment, Identifier [Axis]: Crownpeak Technology, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 320 320    
Fair value at the ending [2],[22]     320  
Investment, Identifier [Axis]: Crownpeak Technology, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 852 852    
Fair value at the ending [2],[21]     852  
Investment, Identifier [Axis]: Crownpeak Technology, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[23]   1,711    
Investment, Identifier [Axis]: Crusoe Energy Systems LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   15,109    
Investment, Identifier [Axis]: Crusoe Energy Systems LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   12,447    
Investment, Identifier [Axis]: DS Parent, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 18,947 18,947    
Fair value at the ending   18,119 [4],[26] 18,947 [2]  
Investment, Identifier [Axis]: DataOnline Corp. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 555 555    
Fair value at the ending   2,591 [4],[14] 555 [2],[12]  
Investment, Identifier [Axis]: DataOnline Corp. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[26]   8,587    
Investment, Identifier [Axis]: DataOnline Corp. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[11],[23],[25],[28]   34,396    
Investment, Identifier [Axis]: DataOnline Corp. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21],[22],[24],[30] 34,762 34,762    
Fair value at the ending [2],[20],[21],[22],[24],[30]     34,762  
Investment, Identifier [Axis]: Demakes Borrower, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Demakes Borrower, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 4,865 4,865    
Fair value at the ending   4,780 [4],[9] 4,865 [2],[20]  
Investment, Identifier [Axis]: Destination Media, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 134 134    
Fair value at the ending [2],[12]     134  
Investment, Identifier [Axis]: Destination Media, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[30] 6,531 6,531    
Fair value at the ending [2],[20],[30]     6,531  
Investment, Identifier [Axis]: Destination Media, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,506 1,506    
Fair value at the ending [2]     1,506  
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (531,783 Class A-1 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 390 390    
Fair value at the ending [2]     $ 390  
Number of shares held     531,783  
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (531,783 Class A-2 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     531,783  
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (Class A-1 units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 586    
Number of shares held   531,783    
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (Class A-2 units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 133    
Number of shares held   531,783    
Investment, Identifier [Axis]: Dorado Acquisition, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Dorado Acquisition, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[22] 13,206 13,206    
Fair value at the ending   13,116 [4],[23],[27] 13,206 [2],[7],[22]  
Investment, Identifier [Axis]: Dorado Acquisition, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 10,938 10,938    
Fair value at the ending   10,874 [4],[23],[27] 10,938 [2],[7]  
Investment, Identifier [Axis]: Douglas Holdings, Inc. (573,847 Class A common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 597 597    
Fair value at the ending [2]     $ 597  
Number of shares held     573,847  
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 614    
Number of shares held   573,847    
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   650 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 481 481    
Fair value at the ending   2,255 [4],[14],[15] 481 [2],[12],[13]  
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Delayed Draw) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Douglas Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Douglas Holdings, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 24,912 24,912    
Fair value at the ending   24,912 [4],[11],[28] 24,912 [2],[21]  
Investment, Identifier [Axis]: Drawbridge Partners, LLC (652,174 Class A-1 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 783 783    
Fair value at the ending [2]     $ 783  
Number of shares held     652,174  
Investment, Identifier [Axis]: Drawbridge Partners, LLC (Class A-1 units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 857    
Number of shares held   652,174    
Investment, Identifier [Axis]: Drawbridge Partners, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 3,974 $ 3,974    
Fair value at the ending   3,981 [4],[14],[15] $ 3,974 [2],[12],[13]  
Investment, Identifier [Axis]: Drawbridge Partners, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Drawbridge Partners, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 15,000 15,000    
Fair value at the ending   15,027 [4],[23] 15,000 [2],[22]  
Investment, Identifier [Axis]: Dusk Acquisition II Corporation 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[30] 27,651 27,651    
Fair value at the ending   7,901 [4],[10],[27] 27,651 [2],[30]  
Investment, Identifier [Axis]: Dusk Acquisition II Corporation 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 37,177 37,177    
Fair value at the ending   10,624 [4],[9],[27] 37,177 [2]  
Investment, Identifier [Axis]: E-Discovery Acquireco, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   1,455 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: E-Discovery Acquireco, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21] 20,400 20,400    
Fair value at the ending   20,200 [4],[11],[27] 20,400 [2],[7],[21]  
Investment, Identifier [Axis]: E-Discovery Acquireco, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 3,273 3,273    
Fair value at the ending   3,265 [4],[27] 3,273 [2],[7]  
Investment, Identifier [Axis]: EMCO Holdco LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: EMCO Holdco LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: EMCO Holdco LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   42,719    
Investment, Identifier [Axis]: EOS Finco S.A.R.L. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[20],[47] 4,820 4,820    
Fair value at the ending   1,929 [4],[9],[16],[33],[48] 4,820 [2],[8],[20],[47]  
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) (Series B Preferred Units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 16,171    
Number of shares held [19]   15,400,820    
Investment, Identifier [Axis]: Ecotrak, LLC (fka Respida Software Equity CI LP) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[28]   $ 7,547    
Investment, Identifier [Axis]: Edustaff, LLC (591 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 1,025 1,025    
Fair value at the ending [2],[18]     $ 1,025  
Number of shares held [18]     591  
Investment, Identifier [Axis]: Edustaff, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Edustaff, LLC (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 1,099    
Number of shares held [19]   591    
Investment, Identifier [Axis]: Edustaff, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21] 11,773 $ 11,773    
Fair value at the ending   10,844 [4],[11],[27] 11,773 [2],[7],[21]  
Investment, Identifier [Axis]: Einstein Parent, INC. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Einstein Parent, INC. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[10],[28]   36,314    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc.        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   6,713    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   6    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   131    
Fair value at the ending   6,850 0  
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Class A units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   7,414    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   (1)    
Discount accretion   1    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   219    
Fair value at the ending   $ 7,633 0  
Number of units held   7,413    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 7,633    
Number of shares held   7,413    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   248    
Sales and paydowns (cost)   (248)    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   0 0  
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   0    
Investment, Identifier [Axis]: Engineered Metal Solutions, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   6,850    
Investment, Identifier [Axis]: Engineering Research and Consulting, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   5,811    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (44,348 preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,129 1,129    
Fair value at the ending [2]     $ 1,129  
Number of shares held     44,348  
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,744 2,744    
Fair value at the ending [2],[12],[13]     $ 2,744  
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,128 2,128    
Fair value at the ending [2],[12],[13]     2,128  
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   11,210    
Investment, Identifier [Axis]: Epika Fleet Services, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 656 656    
Fair value at the ending   0 [4],[14] 656 [2],[12]  
Investment, Identifier [Axis]: Epika Fleet Services, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20] 16,943 16,943    
Fair value at the ending   50,431 [4],[9],[25],[26] 16,943 [2],[7],[20]  
Investment, Identifier [Axis]: Epika Fleet Services, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 9,775 9,775    
Fair value at the ending   13,349 [4],[10] 9,775 [2],[24]  
Investment, Identifier [Axis]: Equine Network, LLC (92 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 123 123    
Fair value at the ending [2],[18]     $ 123  
Number of shares held [18]     92  
Investment, Identifier [Axis]: Equine Network, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 122    
Number of shares held [19]   92    
Investment, Identifier [Axis]: EverService Midco, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: EverService Midco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[24],[30] 54,725 54,725    
Fair value at the ending   37,254 [4],[9],[10],[25],[27],[28] 54,725 [2],[7],[20],[24],[30]  
Investment, Identifier [Axis]: EverView AcquisitionCo, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: EverView AcquisitionCo, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: EverView AcquisitionCo, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[28]   20,750    
Investment, Identifier [Axis]: Evolve Biologics Inc. (Warrant to purchase the equity) (2)| Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[27]   0    
Investment, Identifier [Axis]: Evolve Biologics Inc. (Warrant to purchase the equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   0    
Investment, Identifier [Axis]: Evolve Biologics Inc. (warrant to purchase up to 1.2% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[8] 111 111    
Fair value at the ending [2],[7],[8]     111  
Investment, Identifier [Axis]: Evolve Biologics Inc. (warrant to purchase up to 1.5% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 0 0    
Fair value at the ending [2],[8]     0  
Investment, Identifier [Axis]: Excel Testing and Engineering Holdings LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Excel Testing and Engineering Holdings LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Excel Testing and Engineering Holdings LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   2,970    
Investment, Identifier [Axis]: Excelligence Learning Corporation (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 205 205    
Fair value at the ending   476 [4],[14] 205 [2],[12]  
Investment, Identifier [Axis]: Excelligence Learning Corporation | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20] 12,109 12,109    
Fair value at the ending   10,414 [4],[27] 12,109 [2],[7],[20]  
Investment, Identifier [Axis]: Expedited Travel, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   1,468 [4] 0 [2],[12]  
Investment, Identifier [Axis]: Expedited Travel, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21],[22],[30] 11,973 11,973    
Fair value at the ending   8,332 [4],[9],[10],[11],[23] 11,973 [2],[20],[21],[22],[30]  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (164 Class B preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 0 0    
Fair value at the ending [2],[18]     $ 0  
Number of shares held [18]     164  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (164,381 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 0 0    
Fair value at the ending [2],[18]     $ 0  
Number of shares held [18]     164,381  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (34,944 Class A common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 0 0    
Fair value at the ending [2],[18]     $ 0  
Number of shares held [18]     34,944  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (35 Class A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 15 15    
Fair value at the ending [2],[18]     $ 15  
Number of shares held [18]     35  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   34,944    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   35    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class A-1 preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   41    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   164,381    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Class B preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   164    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 294 $ 294    
Fair value at the ending   0 [4],[14] $ 294 [2],[12]  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 9,948 9,948    
Fair value at the ending [2]     9,948  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,108 2,108    
Fair value at the ending [2]     2,108  
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[27]   18,380    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   5,158    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: FH BMX Buyer, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   9,022    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   4,815    
Investment, Identifier [Axis]: FH BMX Buyer, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 9,145 9,145    
Fair value at the ending [2]     9,145  
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[33]   722    
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) (Series A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19],[33]   $ 0    
Number of shares held [19],[33]   46,462    
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) (common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 0    
Number of shares held [19]   838,077    
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   $ 8,671    
Investment, Identifier [Axis]: FLEET Response, LLC (fka RS Acquisition, LLC) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   8,013    
Investment, Identifier [Axis]: Fiasco Enterprises, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Fiasco Enterprises, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 6,702 6,702    
Fair value at the ending   6,684 [4],[25] 6,702 [2]  
Investment, Identifier [Axis]: Fiasco Enterprises, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 8,084 8,084    
Fair value at the ending   8,063 [4],[25],[27] 8,084 [2],[7]  
Investment, Identifier [Axis]: Fiasco Enterprises, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   34,951    
Investment, Identifier [Axis]: First Brands Group, LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   92    
Investment, Identifier [Axis]: First Brands Group, LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   1,408    
Investment, Identifier [Axis]: First Brands Group, LLC 3 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   189    
Investment, Identifier [Axis]: First Brands Group, LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[24] 13,137 13,137    
Fair value at the ending [2],[20],[24]     13,137  
Investment, Identifier [Axis]: First Brands Group, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   3,379    
Investment, Identifier [Axis]: Forest Buyer, LLC (906 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 841 841    
Fair value at the ending [2],[18]     $ 841  
Number of shares held [18]     906  
Investment, Identifier [Axis]: Forest Buyer, LLC (906 Class B units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 849 849    
Fair value at the ending [2],[18]     $ 849  
Number of shares held [18]     906  
Investment, Identifier [Axis]: Forest Buyer, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 411    
Number of shares held [19]   906    
Investment, Identifier [Axis]: Forest Buyer, LLC (Class B units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 1,100    
Number of shares held [19]   906    
Investment, Identifier [Axis]: Forest Buyer, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending [2],[12]     $ 0  
Investment, Identifier [Axis]: Forest Buyer, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 21,456 21,456    
Fair value at the ending [2],[21]     21,456  
Investment, Identifier [Axis]: Forest Buyer, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[22],[24] 14,572 14,572    
Fair value at the ending [2],[7],[22],[24]     14,572  
Investment, Identifier [Axis]: Fortra, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 13,109 13,109    
Fair value at the ending   9,827 [4],[25],[28] 13,109 [2],[24]  
Investment, Identifier [Axis]: Freedom U.S. Acquisition Corporation (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Freedom U.S. Acquisition Corporation | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[30] 51,439 51,439    
Fair value at the ending   50,650 [4],[9],[10],[11],[26],[28] 51,439 [2],[21],[30]  
Investment, Identifier [Axis]: Fueled Digital Media, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 692 692    
Fair value at the ending   675 [4],[14] 692 [2],[12]  
Investment, Identifier [Axis]: Fueled Digital Media, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 5,402 5,402    
Fair value at the ending   5,261 [4] 5,402 [2]  
Investment, Identifier [Axis]: Fueled Digital Media, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 476 476    
Fair value at the ending   463 [4] 476 [2]  
Investment, Identifier [Axis]: GBP CSTA Buyer LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 1,455    
Number of shares held [19]   1,454,566    
Investment, Identifier [Axis]: GBP CSTA Buyer LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   $ 0    
Investment, Identifier [Axis]: GBP CSTA Buyer LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   980    
Investment, Identifier [Axis]: GC Champion Acquisition LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 7,270 7,270    
Fair value at the ending   0 [4],[14],[15] 7,270 [2],[12],[13]  
Investment, Identifier [Axis]: GC Champion Acquisition LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 12,837 12,837    
Fair value at the ending   19,904 [4],[9],[23] 12,837 [2],[22]  
Investment, Identifier [Axis]: GC Champion Acquisition LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 3,566 3,566    
Fair value at the ending   3,530 [4],[27] 3,566 [2],[7]  
Investment, Identifier [Axis]: GC Champion Acquisition LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 10,698 10,698    
Fair value at the ending   10,590 [4],[27] 10,698 [2],[7]  
Investment, Identifier [Axis]: Gainsight, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   27,135    
Investment, Identifier [Axis]: Gargoyle Enterprises, Inc. (Revolver) | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[49] 997 997    
Fair value at the ending   996 [4],[50] 997 [2],[49]  
Investment, Identifier [Axis]: Gas Media Holdings, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Gas Media Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   530    
Investment, Identifier [Axis]: Gas Media Holdings, LLC (shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 4,194    
Number of shares held   4,790    
Investment, Identifier [Axis]: Gas Media Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[26]   $ 55,887    
Investment, Identifier [Axis]: Gibson Brands, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,037 3,037    
Fair value at the ending   13,093 [4],[9] 3,037 [2]  
Investment, Identifier [Axis]: Golden State Buyer, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 9,611 9,611    
Fair value at the ending   9,437 [4],[9] 9,611 [2],[20]  
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 6,713 6,713    
Fair value at the ending   16,641 [4],[14],[15] 6,713 [2],[12],[13]  
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   2,480 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Guardian Restoration Partners Buyer, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[30] 11,850 11,850    
Fair value at the ending   11,910 [4],[10],[28] 11,850 [2],[30]  
Investment, Identifier [Axis]: HS4 Acquisitionco, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 220 220    
Fair value at the ending [2],[12]     220  
Investment, Identifier [Axis]: HS4 Acquisitionco, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 3,860 3,860    
Fair value at the ending [2],[22]     3,860  
Investment, Identifier [Axis]: HS4 Acquisitionco, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 4,194 4,194    
Fair value at the ending [2],[22]     4,194  
Investment, Identifier [Axis]: Harlem Acquisition, LLC (1,523,811 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,524 1,524    
Fair value at the ending [2]     $ 1,524  
Number of shares held     1,523,811  
Investment, Identifier [Axis]: Harlem Acquisition, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 7,031    
Number of shares held   6,095,244    
Investment, Identifier [Axis]: Harlem Acquisition, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   5,110 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: Harlem Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 479 479    
Fair value at the ending   914 [4],[14] 479 [2],[12]  
Investment, Identifier [Axis]: Harlem Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 31,440 31,440    
Fair value at the ending   32,078 [4],[9],[25] 31,440 [2],[24]  
Investment, Identifier [Axis]: Hart Halsey, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Hart Halsey, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   259    
Investment, Identifier [Axis]: Hart Halsey, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   1,500    
Investment, Identifier [Axis]: Hart Halsey, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   7,515    
Investment, Identifier [Axis]: Helping Hands Childrens Services Management, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Helping Hands Childrens Services Management, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Helping Hands Childrens Services Management, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 11,356 11,356    
Fair value at the ending   11,443 [4],[9],[10] 11,356 [2]  
Investment, Identifier [Axis]: Hostaway Midco Oy (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16],[51]   0    
Investment, Identifier [Axis]: Hostaway Midco Oy (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[16],[51]   0    
Investment, Identifier [Axis]: Hostaway Midco Oy | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[27],[51]   25,063    
Investment, Identifier [Axis]: Huckabee Acquisition, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Huckabee Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Huckabee Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[30] 29,775 29,775    
Fair value at the ending   29,475 [4],[9],[10],[27],[28] 29,775 [2],[7],[20],[30]  
Investment, Identifier [Axis]: IDIG Parent, LLC (192,908 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18],[52] 188 188    
Fair value at the ending [2],[18],[52]     $ 188  
Number of shares held [18],[52]     192,908  
Investment, Identifier [Axis]: IDIG Parent, LLC (Class X units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 36    
Number of shares held [19]   20,049,000    
Investment, Identifier [Axis]: IDIG Parent, LLC (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 164    
Number of shares held [19]   192,908    
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (1,566 Class A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,229 $ 1,229    
Fair value at the ending [2]     $ 1,229  
Number of shares held     1,566  
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (1,566 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     1,566  
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Class A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 357    
Number of shares held   1,566    
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   1,566    
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   0 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: IF & P Holdings Company, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 2,825 2,825    
Fair value at the ending   4,188 [4],[14] 2,825 [2],[12]  
Investment, Identifier [Axis]: IF & P Holdings Company, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20] 23,389 23,389    
Fair value at the ending   22,649 [4],[27] 23,389 [2],[7],[20]  
Investment, Identifier [Axis]: IF & P Holdings Company, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 6,567 6,567    
Fair value at the ending   6,419 [4],[27] 6,567 [2],[7]  
Investment, Identifier [Axis]: IF & P Holdings Company, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,106 1,106    
Fair value at the ending   1,061 [4] 1,106 [2]  
Investment, Identifier [Axis]: IMMEC Buyer (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: IMMEC Buyer (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   212    
Investment, Identifier [Axis]: IMMEC Buyer | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,900    
Investment, Identifier [Axis]: INH Buyer, Inc. (2,713,147 A-1 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     2,713,147  
Investment, Identifier [Axis]: INH Buyer, Inc. (3 preferred stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     3  
Investment, Identifier [Axis]: INH Buyer, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 2,524 2,524    
Fair value at the ending [2],[35]     $ 2,524  
Investment, Identifier [Axis]: Incompass, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,159 2,159    
Fair value at the ending   2,117 [4] 2,159 [2]  
Investment, Identifier [Axis]: Incompass, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[30] 24,580 24,580    
Fair value at the ending   24,096 [4],[10],[27] 24,580 [2],[7],[20],[30]  
Investment, Identifier [Axis]: Independence Buyer, Inc. (169 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 52 52    
Fair value at the ending [2]     $ 52  
Number of shares held     169  
Investment, Identifier [Axis]: Independence Buyer, Inc. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   169    
Investment, Identifier [Axis]: Independence Buyer, Inc. (Class B units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   872    
Investment, Identifier [Axis]: Independence Buyer, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 574 $ 574    
Fair value at the ending   911 [4],[14] $ 574 [2],[12]  
Investment, Identifier [Axis]: Independence Buyer, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 10,773 10,773    
Fair value at the ending   8,207 [4],[23] 10,773 [2],[20],[22]  
Investment, Identifier [Axis]: Inmar, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   9,850    
Investment, Identifier [Axis]: Innovative Artists Entertainment, LLC (Equity commitment) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19],[53]   2,109    
Amount of total commitment [19],[53]   2,445    
Total equity investment [19],[53]   3,536    
Investment, Identifier [Axis]: Innovative Artists Entertainment, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Innovative Artists Entertainment, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[26]   20,045    
Investment, Identifier [Axis]: InsideRE, LLC (284,853 Class A common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 412 412    
Fair value at the ending [2],[18]     $ 412  
Number of shares held [18]     284,853  
Investment, Identifier [Axis]: InsideRE, LLC (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 327    
Number of shares held [19]   284,853    
Investment, Identifier [Axis]: InsideRE, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 382    
Investment, Identifier [Axis]: InsideRE, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   289 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: InsideRE, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 7,278 7,278    
Fair value at the ending   7,202 [4],[9],[23] 7,278 [2],[20],[22]  
Investment, Identifier [Axis]: InsideRE, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 2,828 2,828    
Fair value at the ending   2,799 [4],[11] 2,828 [2],[21]  
Investment, Identifier [Axis]: Interstate BidCo, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Interstate BidCo, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Interstate BidCo, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 7,161 7,161    
Fair value at the ending   14,722 [4],[9],[10],[27] 7,161 [2],[24]  
Investment, Identifier [Axis]: Interstate BidCo, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 8,263 8,263    
Fair value at the ending   7,111 [4],[25],[28] 8,263 [2]  
Investment, Identifier [Axis]: Interstate BidCo, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,205    
Investment, Identifier [Axis]: Interstate BidCo, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   12,384    
Investment, Identifier [Axis]: Interstate BidCo, LLC 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   10,898    
Investment, Identifier [Axis]: Interstate BidCo, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[30] 14,828 14,828    
Fair value at the ending [2],[7],[20],[30]     14,828  
Investment, Identifier [Axis]: Inversiones DP6 (BVI) Numero Dos, Ltd. | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[54] 27,468 27,468    
Fair value at the ending [2],[8],[54]     27,468  
Investment, Identifier [Axis]: Ivanti Software, Inc. | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[55]   0    
Investment, Identifier [Axis]: Ivanti Software, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[17] 15,365 15,365    
Fair value at the ending   0 [4],[55] 15,365 [2],[17]  
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13],[41] 0 0    
Fair value at the ending   0 [4],[14],[15],[16],[42] 0 [2],[8],[12],[13],[41]  
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[41] 815 815    
Fair value at the ending   2,744 [4],[14],[16],[42] 815 [2],[8],[12],[41]  
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 14,120 14,120    
Fair value at the ending   13,978 [4],[16],[25],[28],[42] 14,120 [2],[8],[41]  
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 6,767 6,767    
Fair value at the ending   1,472 [4],[16],[25],[42] 6,767 [2],[8],[41]  
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 3,645 3,645    
Fair value at the ending   6,641 [4],[16],[25],[42] 3,645 [2],[8],[41]  
Investment, Identifier [Axis]: Ivex Holdco Inc. and Induspac Holdco Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 1,487 1,487    
Fair value at the ending   3,577 [4],[16],[25],[42] 1,487 [2],[8],[41]  
Investment, Identifier [Axis]: Izzio Artisan Bakery, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   19,060 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Izzio Artisan Bakery, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[25]   14,369    
Investment, Identifier [Axis]: Izzio Artisan Bakery, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[27]   10,318    
Investment, Identifier [Axis]: Izzio Artisan Bakery, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[24] 14,464 14,464    
Fair value at the ending [2],[21],[24]     14,464  
Investment, Identifier [Axis]: J2 BWA Funding III, LLC (Commitment to purchase equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19],[56]   811    
Investment, Identifier [Axis]: J2 BWA Funding III, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 2,572 2,572    
Fair value at the ending   3,556 [4],[14],[15],[16] 2,572 [2],[8],[12],[13]  
Investment, Identifier [Axis]: J2 BWA Funding III, LLC (commitment to purchase up to 3.8% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18],[57] 443 443    
Fair value at the ending [2],[8],[18],[57]     443  
Investment, Identifier [Axis]: J2 BWA Funding LLC (0.3% profit sharing) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18] 52 52    
Fair value at the ending [2],[8],[18]     52  
Investment, Identifier [Axis]: J2 BWA Funding LLC (Profit sharing) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19]   56    
Investment, Identifier [Axis]: J2 BWA Funding LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12] 1,746 1,746    
Fair value at the ending   1,706 [4],[14],[16] 1,746 [2],[8],[12]  
Investment, Identifier [Axis]: JDX Studio, LLC (799,232 Class A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 800 800    
Fair value at the ending [2],[18]     $ 800  
Number of shares held [18]     799,232  
Investment, Identifier [Axis]: JDX Studio, LLC (Class A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 799    
Number of shares held [19]   799,232    
Investment, Identifier [Axis]: JDX Studio, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   0 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: JDX Studio, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 314 314    
Fair value at the ending   0 [4],[14] 314 [2],[12]  
Investment, Identifier [Axis]: JDX Studio, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 9,825 9,825    
Fair value at the ending   9,929 [4],[25] 9,825 [2],[24]  
Investment, Identifier [Axis]: Jesse Studio Mezz, LLC (Delayed Draw) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 34,404 34,404    
Fair value at the ending   39,383 [4],[14],[15],[16] 34,404 [2],[8],[12],[13]  
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC (214,092 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 790 790    
Fair value at the ending [2]     $ 790  
Number of shares held     214,092  
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 852    
Number of shares held   214,092    
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   0 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Jobnimbus Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[24] 31,520 31,520    
Fair value at the ending   32,000 [4],[11],[26],[28] 31,520 [2],[21],[24]  
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (1,566,667 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 754 754    
Fair value at the ending [2]     $ 754  
Number of shares held     1,566,667  
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A common units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   23,636    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   (23,636)    
Fair value at the ending   $ 0 $ 0  
Number of units held   188,000    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 0    
Number of shares held   188,000    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   $ 0 0  
Number of units held   1,566,667    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 0    
Number of shares held   1,566,667    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   2,574    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   1,857    
Fair value at the ending   4,431 0  
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Delayed Draw) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14],[15],[33]   4,431    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   729    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   19    
Fair value at the ending   748 0  
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[33]   748    
Investment, Identifier [Axis]: Jumpstart Holdco, Inc. | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 21,467 21,467    
Fair value at the ending [2],[7]     21,467  
Investment, Identifier [Axis]: K2 Services Venture LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: K2 Services Venture LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   55,057    
Investment, Identifier [Axis]: K2 Services Venture LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   13,464    
Investment, Identifier [Axis]: KL Moon Acquisition, LLC (0.3% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 229 229    
Fair value at the ending [2]     229  
Investment, Identifier [Axis]: KL Moon Acquisition, LLC (Equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   272    
Investment, Identifier [Axis]: KL Moon Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 895 895    
Fair value at the ending   1,260 [4],[14] 895 [2],[12]  
Investment, Identifier [Axis]: KL Moon Acquisition, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 4,074 4,074    
Fair value at the ending   4,234 [4] 4,074 [2]  
Investment, Identifier [Axis]: KL Moon Acquisition, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 9,502 9,502    
Fair value at the ending   9,873 [4] 9,502 [2]  
Investment, Identifier [Axis]: KL Moon Acquisition, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,895 1,895    
Fair value at the ending   1,969 [4] 1,895 [2]  
Investment, Identifier [Axis]: KT Naples UB LLC (Delayed Draw) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 9,629 9,629    
Fair value at the ending [2],[8],[12],[13]     9,629  
Investment, Identifier [Axis]: KT Naples UB LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   12,612    
Investment, Identifier [Axis]: Keel Platform, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Keel Platform, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 7,856 7,856    
Fair value at the ending [2],[20]     7,856  
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 952 952    
Fair value at the ending   1,198 [4] 952 [2],[12]  
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 2,924 2,924    
Fair value at the ending   2,913 [4],[27] 2,924 [2],[7]  
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 938 938    
Fair value at the ending   936 [4],[9] 938 [2],[20]  
Investment, Identifier [Axis]: Kingsley Gate Partners, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,357 1,357    
Fair value at the ending   1,352 [4] 1,357 [2]  
Investment, Identifier [Axis]: LVF Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 225 225    
Fair value at the ending [2],[12]     225  
Investment, Identifier [Axis]: LVF Holdings, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 3,403 3,403    
Fair value at the ending [2],[7]     3,403  
Investment, Identifier [Axis]: LVF Holdings, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 3,257 3,257    
Fair value at the ending [2],[7]     3,257  
Investment, Identifier [Axis]: Learn-It Systems, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   1,159    
Investment, Identifier [Axis]: Learn-It Systems, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Learn-It Systems, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Learn-It Systems, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   52,263    
Investment, Identifier [Axis]: Lessen LLC (128,737 preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,407 1,407    
Fair value at the ending [2]     $ 1,407  
Number of shares held     128,737  
Investment, Identifier [Axis]: Lessen LLC (Preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   128,737    
Investment, Identifier [Axis]: Lessen LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 8,487 $ 8,487    
Fair value at the ending   7,276 [4] $ 8,487 [2]  
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC (158,730 Class A shares) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 174 174    
Fair value at the ending [2],[18]     $ 174  
Number of shares held [18]     158,730  
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC (Class A shares) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 250    
Number of shares held [19]   158,730    
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 316 $ 316    
Fair value at the ending   1,190 [4],[14] $ 316 [2],[12]  
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[23]   9,600    
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   11,907    
Investment, Identifier [Axis]: Lifted Trucks Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 9,642 9,642    
Fair value at the ending [2],[20],[22]     9,642  
Investment, Identifier [Axis]: Light Wave Dental Management, LLC (314,621 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 2,829 2,829    
Fair value at the ending [2],[18]     $ 2,829  
Number of shares held [18]     314,621  
Investment, Identifier [Axis]: Light Wave Dental Management, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 2,984    
Number of shares held [19]   314,621    
Investment, Identifier [Axis]: Light Wave Dental Management, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   4,364 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 4,946 4,946    
Fair value at the ending   2,926 [4],[9] 4,946 [2]  
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 528 528    
Fair value at the ending   4,926 [4],[9] 528 [2]  
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21],[24],[30] 26,871 26,871    
Fair value at the ending   526 [4],[9] 26,871 [2],[20],[21],[24],[30]  
Investment, Identifier [Axis]: Light Wave Dental Management, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[11],[25]   26,759    
Investment, Identifier [Axis]: Long Grove Pharmaceuticals, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Long Grove Pharmaceuticals, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   14,409    
Investment, Identifier [Axis]: MB Purchaser, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 6,211 6,211    
Fair value at the ending   0 [4],[14],[15] 6,211 [2],[12],[13]  
Investment, Identifier [Axis]: MB Purchaser, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: MB Purchaser, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10]   14,627    
Investment, Identifier [Axis]: MB Purchaser, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   12,278    
Investment, Identifier [Axis]: MB Purchaser, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   5,460    
Investment, Identifier [Axis]: MB Purchaser, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[30] 14,887 14,887    
Fair value at the ending [2],[20],[30]     14,887  
Investment, Identifier [Axis]: MC Aviation Limited (Commitment to purchase the equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 23,603    
Percentage of equity commitments   40.00%    
Investment, Identifier [Axis]: MC Aviation Limited, Equity Securities, (commitment to purchase the equity)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   22,809    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   794    
Fair value at the ending   23,603 0  
Investment, Identifier [Axis]: MC Voyager SPV II LLC (Equity Commitment)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   20,522    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   20,522 0  
Investment, Identifier [Axis]: MC Voyager SPV II LLC (Equity commitment)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Amount of total commitment   20,522    
Total equity investment   45,000    
Investment, Identifier [Axis]: MC Voyager SPV II LLC (Equity commitment) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16],[58]   20,522    
Amount of total commitment [16],[58]   20,522    
Total equity investment [16],[58]   45,000    
Investment, Identifier [Axis]: MEI Buyer LLC (2,275 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,413 3,413    
Fair value at the ending [2]     $ 3,413  
Number of shares held     2,275  
Investment, Identifier [Axis]: MEI Buyer LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   2,248    
Investment, Identifier [Axis]: MEI Buyer LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 478 478    
Fair value at the ending   0 [4],[14] $ 478 [2],[12]  
Investment, Identifier [Axis]: MEI Buyer LLC (Units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 6,061    
Number of shares held   2,275    
Investment, Identifier [Axis]: MEI Buyer LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[24] 25,794 $ 25,794    
Fair value at the ending   25,283 [4],[9],[25],[28] 25,794 [2],[20],[24]  
Investment, Identifier [Axis]: MEI Buyer LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24],[30] 14,482 14,482    
Fair value at the ending   14,196 [4],[10],[25] 14,482 [2],[24],[30]  
Investment, Identifier [Axis]: MEI Buyer LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 4,135 4,135    
Fair value at the ending   4,043 [4],[9] 4,135 [2]  
Investment, Identifier [Axis]: MV Receivables II, LLC (1,822 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18] 0 0    
Fair value at the ending [2],[8],[18]     $ 0  
Number of shares held [8],[18]     1,822  
Investment, Identifier [Axis]: MV Receivables II, LLC (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19]   $ 0    
Number of shares held [16],[19]   1,822    
Investment, Identifier [Axis]: MV Receivables II, LLC (Warrant to purchase the equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19]   $ 0    
Investment, Identifier [Axis]: MV Receivables II, LLC (warrant to purchase up to 1.0% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18] 0 0    
Fair value at the ending [2],[8],[18]     $ 0  
Investment, Identifier [Axis]: MV Receivables II, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[35] 6,042 6,042    
Fair value at the ending   4,452 [4],[16],[33] 6,042 [2],[8],[35]  
Investment, Identifier [Axis]: MYOB US Borrower, LLC (fka ETA Australia Holdings III Pty Ltd and MYOB US Borrower LLC) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[59],[60]   26,281    
Investment, Identifier [Axis]: Madison Logic Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Madison Logic Holdings, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 13,425 13,425    
Fair value at the ending   12,586 [4],[27] 13,425 [2],[7]  
Investment, Identifier [Axis]: Maltese Diplomat Owner 100 LLC (Delayed Draw) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16]   50,120    
Investment, Identifier [Axis]: Mammoth Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   655 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Mammoth Holdings, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24],[30] 21,773 21,773    
Fair value at the ending   21,008 [4],[10],[25] 21,773 [2],[24],[30]  
Investment, Identifier [Axis]: Mammoth Holdings, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 5,472 5,472    
Fair value at the ending   5,280 [4] 5,472 [2]  
Investment, Identifier [Axis]: Max US Bidco Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   7,796    
Investment, Identifier [Axis]: McKissock Investment Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   9,364    
Investment, Identifier [Axis]: Medallia, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 12,117 12,117    
Fair value at the ending   9,875 [4],[23] 12,117 [2],[22]  
Investment, Identifier [Axis]: Milrose Consultants, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 462 462    
Fair value at the ending   1,154 [4],[14] 462 [2],[12]  
Investment, Identifier [Axis]: Milrose Consultants, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[30] 44,660 44,660    
Fair value at the ending   44,053 [4],[9],[10],[27],[28] 44,660 [2],[7],[20],[30]  
Investment, Identifier [Axis]: Milrose Consultants, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,611 1,611    
Fair value at the ending   1,589 [4],[26] 1,611 [2]  
Investment, Identifier [Axis]: Milrose Consultants, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,585 3,585    
Fair value at the ending   3,536 [4],[26] 3,585 [2]  
Investment, Identifier [Axis]: Milrose Consultants, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   9,209    
Investment, Identifier [Axis]: Milrose Consultants, LLC 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   4,204    
Investment, Identifier [Axis]: Mindbody, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Mindbody, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 1,867 1,867    
Fair value at the ending   690 [4],[27] 1,867 [2],[22]  
Investment, Identifier [Axis]: Mindbody, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 2,270 2,270    
Fair value at the ending   22,655 [4],[27],[28] 2,270 [2],[22]  
Investment, Identifier [Axis]: Mission Critical Group, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   1,559    
Investment, Identifier [Axis]: Mission Critical Group, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Mission Critical Group, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   7,013    
Investment, Identifier [Axis]: Moonraker Acquisitionco LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 280 280    
Fair value at the ending [2],[12]     280  
Investment, Identifier [Axis]: Moonraker Acquisitionco LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 6,860 6,860    
Fair value at the ending [2],[7]     6,860  
Investment, Identifier [Axis]: Mooring Primary, LLC (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   2,576    
Investment, Identifier [Axis]: Mooring Primary, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 0    
Investment, Identifier [Axis]: Mooring Primary, LLC (Preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 2,522    
Number of shares held   2,574    
Investment, Identifier [Axis]: Mooring Primary, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   $ 0    
Investment, Identifier [Axis]: Mooring Primary, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[26]   13,885    
Investment, Identifier [Axis]: NBPT Acquisition LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   664    
Investment, Identifier [Axis]: NBPT Acquisition LLC (Preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[61]   $ 4,582    
Number of shares held [61]   4,421    
Investment, Identifier [Axis]: NBPT Acquisition LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   $ 0    
Investment, Identifier [Axis]: NBPT Acquisition LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26]   20,886    
Investment, Identifier [Axis]: NFM & J, L.P. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 830 830    
Fair value at the ending [2],[12],[13]     830  
Investment, Identifier [Axis]: NFM & J, L.P. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   1,846 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: NFM & J, L.P. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[23],[27]   13,050    
Investment, Identifier [Axis]: NFM & J, L.P. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   818    
Investment, Identifier [Axis]: NFM & J, L.P. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21],[22] 13,245 13,245    
Fair value at the ending [2],[7],[21],[22]     13,245  
Investment, Identifier [Axis]: NFS Intermediate HoldCo, LLC (Series B preferred units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   53,255    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   7,395    
Fair value at the ending   $ 60,650 0  
Number of units held   53,255    
Investment, Identifier [Axis]: NFS Intermediate HoldCo, LLC (Series B preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16],[19]   $ 60,650    
Number of shares held [16],[19]   53,255    
Investment, Identifier [Axis]: NQ PE Project Colosseum Midco Inc. (1,364,614 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 278 $ 278    
Fair value at the ending [2]     $ 278  
Number of shares held     1,364,614  
Investment, Identifier [Axis]: NQ PE Project Colosseum Midco Inc. (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 142    
Number of shares held   1,364,614    
Investment, Identifier [Axis]: NQ PE Project Colosseum Midco Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: NQ PE Project Colosseum Midco Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20] 12,832 12,832    
Fair value at the ending   12,596 [4] 12,832 [2],[7],[20]  
Investment, Identifier [Axis]: Narrative Strategies Acquisition, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Narrative Strategies Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Narrative Strategies Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[26]   7,781    
Investment, Identifier [Axis]: Nastel Technologies, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 3,478 3,478 3,500  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   12 10  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   6 (32)  
Fair value at the ending   3,496 3,478 3,500
Investment, Identifier [Axis]: Nastel Technologies, LLC (Class A units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 4,611 4,611 4,226  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   893 385  
Fair value at the ending   $ 5,504 $ 4,611 4,226
Number of units held   3,408 3,408  
Investment, Identifier [Axis]: Nastel Technologies, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[19]   $ 5,504    
Number of shares held [19]   3,408    
Investment, Identifier [Axis]: Nastel Technologies, LLC (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0 $ 0  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   0 0 0
Investment, Identifier [Axis]: Nastel Technologies, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   0    
Investment, Identifier [Axis]: Nastel Technologies, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[23]   3,496    
Investment, Identifier [Axis]: Nasuni Corporation (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Nasuni Corporation (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     0  
Investment, Identifier [Axis]: Nasuni Corporation | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[24] 15,062 15,062    
Fair value at the ending   15,150 [4],[11],[28] 15,062 [2],[21],[24]  
Investment, Identifier [Axis]: NationsBenefits, LLC (326,667 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 2,805 2,805    
Fair value at the ending [2],[18]     $ 2,805  
Number of shares held [18]     326,667  
Investment, Identifier [Axis]: NationsBenefits, LLC (369,827 Series B units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 5,523 5,523    
Fair value at the ending [2],[18]     $ 5,523  
Number of shares held [18]     369,827  
Investment, Identifier [Axis]: NationsBenefits, LLC (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 2,665    
Number of shares held [19]   326,667    
Investment, Identifier [Axis]: NationsBenefits, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending   1,444 [4],[14],[15] $ 0 [2],[12],[13]  
Investment, Identifier [Axis]: NationsBenefits, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   7,219 [4] 0 [2],[12]  
Investment, Identifier [Axis]: NationsBenefits, LLC (Series B units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 5,333    
Number of shares held [19]   369,827    
Investment, Identifier [Axis]: NationsBenefits, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 11,883 $ 11,883    
Fair value at the ending [2],[7]     11,883  
Investment, Identifier [Axis]: NationsBenefits, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 14,163 14,163    
Fair value at the ending [2],[7]     14,163  
Investment, Identifier [Axis]: NationsBenefits, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 15,355 15,355    
Fair value at the ending [2],[24]     15,355  
Investment, Identifier [Axis]: NationsBenefits, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 6,179 6,179    
Fair value at the ending [2]     6,179  
Investment, Identifier [Axis]: NationsBenefits, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[25],[26],[28]   64,326    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   1,098    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[26]   25,025    
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   7,429    
Investment, Identifier [Axis]: New Engen, Inc. (417 preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 532 532    
Fair value at the ending [2]     $ 532  
Number of shares held     417  
Investment, Identifier [Axis]: New Engen, Inc. (5,067 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1 1    
Fair value at the ending [2]     $ 1  
Number of shares held     5,067  
Investment, Identifier [Axis]: New Engen, Inc. (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 182    
Number of shares held   5,067    
Investment, Identifier [Axis]: New Engen, Inc. (Preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 417    
Number of shares held   417    
Investment, Identifier [Axis]: New Engen, Inc. 1 | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 9,203 $ 9,203    
Fair value at the ending   7,048 [4],[9],[23] $ 9,203 [2],[20],[22]  
Investment, Identifier [Axis]: New Engen, Inc. 2 | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 7,772 7,772    
Fair value at the ending   7,772 [4],[9],[23] 7,772 [2],[20],[22]  
Investment, Identifier [Axis]: New Engen, Inc. 3 | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 2,393 2,393    
Fair value at the ending   2,370 [4],[11] 2,393 [2],[21]  
Investment, Identifier [Axis]: Niteo Products, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Niteo Products, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   23,148    
Investment, Identifier [Axis]: Northeast Contracting Company, LLC (5,364,700 Class A-2 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 5,447 5,447    
Fair value at the ending [2],[18]     $ 5,447  
Number of shares held [18]     5,364,700  
Investment, Identifier [Axis]: Northeast Contracting Company, LLC (Class A-2 units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 6,293    
Number of shares held [19]   6,191,218    
Investment, Identifier [Axis]: Northeast Contracting Company, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   341 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Northeast Contracting Company, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 7,489 7,489    
Fair value at the ending   7,399 [4] 7,489 [2]  
Investment, Identifier [Axis]: OPOC Acquisition, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   361 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: OPOC Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 119 119    
Fair value at the ending   0 [4],[14] 119 [2],[12]  
Investment, Identifier [Axis]: OPOC Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 12,805 12,805    
Fair value at the ending   12,944 [4],[25] 12,805 [2],[24]  
Investment, Identifier [Axis]: OWL Acquisition, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   277    
Investment, Identifier [Axis]: OWL Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: OWL Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[27]   16,586    
Investment, Identifier [Axis]: Oceana Australian Fixed Income Trust 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[8],[62],[63] 29,528 29,528    
Fair value at the ending [2],[7],[8],[62],[63]     29,528  
Investment, Identifier [Axis]: Oceana Australian Fixed Income Trust 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[62],[63] 13,719 13,719    
Fair value at the ending [2],[8],[62],[63]     13,719  
Investment, Identifier [Axis]: Off Hours Spirits, Inc. / Hour Barrel, LLC (Revolver) | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[64] 203 203    
Fair value at the ending [2],[12],[64]     203  
Investment, Identifier [Axis]: Onit, Inc. | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 16,800 16,800    
Fair value at the ending [2],[7]     16,800  
Investment, Identifier [Axis]: Onix Networking Corp. (2,000,000 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,802 1,802    
Fair value at the ending [2]     $ 1,802  
Number of shares held     2,000,000  
Investment, Identifier [Axis]: Onix Networking Corp. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Onix Networking Corp. (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 2,110    
Number of shares held   2,000,000    
Investment, Identifier [Axis]: Onix Networking Corp. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   $ 4,478    
Investment, Identifier [Axis]: Onix Networking Corp. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[27]   14,700    
Investment, Identifier [Axis]: Onix Networking Corp. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20] 14,850 14,850    
Fair value at the ending [2],[7],[20]     14,850  
Investment, Identifier [Axis]: Optomi, LLC (278 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 529 529    
Fair value at the ending [2],[18]     $ 529  
Number of shares held [18]     278  
Investment, Identifier [Axis]: Optomi, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 615    
Number of shares held [19]   278    
Investment, Identifier [Axis]: Optomi, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 850 $ 850    
Fair value at the ending   1,594 [4],[14] $ 850 [2],[12]  
Investment, Identifier [Axis]: Optomi, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21] 5,590 5,590    
Fair value at the ending   5,512 [4],[11],[27] 5,590 [2],[7],[21]  
Investment, Identifier [Axis]: Optomi, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 13,178 13,178    
Fair value at the ending   12,994 [4],[11],[23] 13,178 [2],[21],[22]  
Investment, Identifier [Axis]: Oranje Holdco, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     0  
Investment, Identifier [Axis]: Oranje Holdco, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 29,053 29,053    
Fair value at the ending [2],[7]     29,053  
Investment, Identifier [Axis]: Oranje Holdco, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21] 14,140 14,140    
Fair value at the ending [2],[7],[21]     14,140  
Investment, Identifier [Axis]: PAI Middle Tier, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   538    
Investment, Identifier [Axis]: PAI Middle Tier, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26],[28]   17,838    
Investment, Identifier [Axis]: PC Pest Buyer, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 13,107 13,107    
Fair value at the ending   32,367 [4],[14],[15] 13,107 [2],[12],[13]  
Investment, Identifier [Axis]: PC Pest Buyer, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: PC Pest Buyer, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20] 13,958 13,958    
Fair value at the ending   13,867 [4],[9],[27] 13,958 [2],[7],[20]  
Investment, Identifier [Axis]: PFI Lower Midco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   5,548    
Investment, Identifier [Axis]: PNE Interco LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 4,415 4,415    
Fair value at the ending   4,419 [4],[14],[15] 4,415 [2],[12],[13]  
Investment, Identifier [Axis]: PNE Interco LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 786 786    
Fair value at the ending   0 [4],[14] 786 [2],[12]  
Investment, Identifier [Axis]: PNE Interco LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[22],[24] 13,916 13,916    
Fair value at the ending   13,790 [4],[9],[23],[25],[27] 13,916 [2],[7],[20],[22],[24]  
Investment, Identifier [Axis]: PRGX Global, Inc (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     0  
Investment, Identifier [Axis]: PRGX Global, Inc | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 49,799 49,799    
Fair value at the ending [2],[24]     49,799  
Investment, Identifier [Axis]: PRGX Global, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   1,970    
Investment, Identifier [Axis]: PRGX Global, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[25],[28]   35,673    
Investment, Identifier [Axis]: Palmdale Oil Company LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Palmdale Oil Company LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Palmdale Oil Company LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   4,326    
Investment, Identifier [Axis]: Panda Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 8,402 8,402    
Fair value at the ending   9,630 [4] 8,402 [2],[7]  
Investment, Identifier [Axis]: Park County Holdings, LLC | Unitranche Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 45,000 45,000    
Fair value at the ending [2]     45,000  
Investment, Identifier [Axis]: Parkhub, Inc. (1,049,936 Series A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,502 1,502    
Fair value at the ending [2]     $ 1,502  
Number of shares held     1,049,936  
Investment, Identifier [Axis]: Parkhub, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,910 2,910    
Fair value at the ending   8,955 [4],[14],[15] $ 2,910 [2],[12],[13]  
Investment, Identifier [Axis]: Parkhub, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   1,592 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Parkhub, Inc. (Delayed Draw) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13],[65] 0 0    
Fair value at the ending   3,155 [4],[14],[15],[16],[40] 0 [2],[8],[12],[13],[65]  
Investment, Identifier [Axis]: Parkhub, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   2,020 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Parkhub, Inc. (Series A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 1,761    
Number of shares held   1,178,344    
Investment, Identifier [Axis]: Parkhub, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 16,451 $ 16,451    
Fair value at the ending   16,369 [4],[28] 16,451 [2],[7]  
Investment, Identifier [Axis]: Parkhub, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[65] 33,962 33,962    
Fair value at the ending   36,110 [4],[16],[40] 33,962 [2],[8],[65]  
Investment, Identifier [Axis]: Patagonia Holdco LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[8] 13,130 13,130    
Fair value at the ending   10,821 [4],[16],[27] 13,130 [2],[7],[8]  
Investment, Identifier [Axis]: Phia Purchaser, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Phia Purchaser, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Phia Purchaser, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   7,920    
Investment, Identifier [Axis]: Polychem Acquisition, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 1,642 1,642    
Fair value at the ending   1,582 [4] 1,642 [2],[7]  
Investment, Identifier [Axis]: Power Stop, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 5,244 5,244    
Fair value at the ending   4,584 [4],[25] 5,244 [2],[24]  
Investment, Identifier [Axis]: PrecisionX Group, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   600    
Investment, Identifier [Axis]: PrecisionX Group, LLC (fka Specialty Manufacturing Buyer, LLC) (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 3,128 3,128    
Fair value at the ending [2],[12],[13]     3,128  
Investment, Identifier [Axis]: PrecisionX Group, LLC (fka Specialty Manufacturing Buyer, LLC) (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 596 596    
Fair value at the ending [2],[12]     596  
Investment, Identifier [Axis]: PrecisionX Group, LLC (fka Specialty Manufacturing Buyer, LLC) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,532 2,532    
Fair value at the ending [2]     2,532  
Investment, Identifier [Axis]: PrecisionX Group, LLC (fka Specialty Manufacturing Buyer, LLC) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[24],[30] 15,682 15,682    
Fair value at the ending [2],[20],[24],[30]     15,682  
Investment, Identifier [Axis]: PrecisionX Group, LLC (fka Specialty Manufacturing Buyer, LLC) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 8,044 8,044    
Fair value at the ending [2]     8,044  
Investment, Identifier [Axis]: PrecisionX Group, LLC (fka Specialty Manufacturing Buyer, LLC) 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 5,959 5,959    
Fair value at the ending [2]     5,959  
Investment, Identifier [Axis]: PrecisionX Group, LLC (fka Specialty Manufacturing Buyer, LLC) 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 5,959 5,959    
Fair value at the ending [2]     5,959  
Investment, Identifier [Axis]: PrecisionX Group, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   2,536    
Investment, Identifier [Axis]: PrecisionX Group, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[25]   15,640    
Investment, Identifier [Axis]: PrecisionX Group, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,034    
Investment, Identifier [Axis]: PrecisionX Group, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26]   5,929    
Investment, Identifier [Axis]: PrecisionX Group, LLC 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26]   5,966    
Investment, Identifier [Axis]: PrecisionX Group, LLC 6 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   3,735    
Investment, Identifier [Axis]: PrecisionX Group, LLC 7 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   1,803    
Investment, Identifier [Axis]: Premier Roofing L.L.C. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 1,069 1,069    
Fair value at the ending   572 [4],[14],[33] 1,069 [2],[12]  
Investment, Identifier [Axis]: Premier Roofing L.L.C. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 3,034 3,034    
Fair value at the ending   1,533 [4],[33] 3,034 [2],[20]  
Investment, Identifier [Axis]: Project Accelerate Parent, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Project Accelerate Parent, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 11,816 11,816    
Fair value at the ending   11,714 [4],[9] 11,816 [2]  
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16],[59],[60]   0    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16],[59],[60]   0    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Revolver) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[16],[59]   0    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd (Revolver) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[16],[59],[60]   0    
Investment, Identifier [Axis]: Protecht Group Holdings Pty Ltd | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[59],[60]   21,140    
Investment, Identifier [Axis]: Prototek LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[35] 0 0    
Fair value at the ending   0 [4],[14],[33] 0 [2],[12],[35]  
Investment, Identifier [Axis]: Prototek LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 6,372 6,372    
Fair value at the ending   5,139 [4],[33] 6,372 [2],[35]  
Investment, Identifier [Axis]: QF Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 472 472    
Fair value at the ending [2],[12]     472  
Investment, Identifier [Axis]: QF Holdings, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[30] 909 909    
Fair value at the ending [2],[30]     909  
Investment, Identifier [Axis]: QF Holdings, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 4,543 4,543    
Fair value at the ending [2],[22]     4,543  
Investment, Identifier [Axis]: QF Holdings, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 4,361 4,361    
Fair value at the ending [2],[22]     4,361  
Investment, Identifier [Axis]: QF Holdings, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 909 909    
Fair value at the ending [2],[22]     909  
Investment, Identifier [Axis]: QF Holdings, Inc. 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 909 909    
Fair value at the ending [2],[22]     909  
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (Warrant to purchase the equity) 1 | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   51    
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (Warrant to purchase the equity) 2 | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   36    
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (warrant to purchase up to 0.2% of the equity) 1 | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 306 306    
Fair value at the ending [2]     306  
Investment, Identifier [Axis]: Quest Resource Management Group, LLC (warrant to purchase up to 0.2% of the equity) 2 | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 214 214    
Fair value at the ending [2]     214  
Investment, Identifier [Axis]: Quest Resource Management Group, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 15,000 15,000    
Fair value at the ending   12,841 [4] 15,000 [2]  
Investment, Identifier [Axis]: RC & CY New Orleans Sole Member, LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   30,003    
Investment, Identifier [Axis]: RS Acquisition, LLC (46,462 Series A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 47 47    
Fair value at the ending [2],[18]     $ 47  
Number of shares held [18]     46,462  
Investment, Identifier [Axis]: RS Acquisition, LLC (838,077 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 288 288    
Fair value at the ending [2],[18]     $ 288  
Number of shares held [18]     838,077  
Investment, Identifier [Axis]: RS Acquisition, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 838 838    
Fair value at the ending [2],[12]     $ 838  
Investment, Identifier [Axis]: RS Acquisition, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 10,125 10,125    
Fair value at the ending [2],[22]     10,125  
Investment, Identifier [Axis]: RS Acquisition, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 9,356 9,356    
Fair value at the ending [2]     9,356  
Investment, Identifier [Axis]: Radiate Holdco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[17] 10,965 10,965    
Fair value at the ending   10 [4],[55] 10,965 [2],[17]  
Investment, Identifier [Axis]: Radiology Partners, Inc. | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 17,166 17,166    
Fair value at the ending [2]     17,166  
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. (2,206 Series A-2 preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,176 2,176    
Fair value at the ending [2]     $ 2,176  
Number of shares held     2,206  
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     $ 0  
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. (Series A-2 preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 4,154    
Number of shares held   3,295    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   $ 7,480    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   7,142    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   5,178    
Investment, Identifier [Axis]: Rampart Exterior Services Buyer, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 7,481 7,481    
Fair value at the ending [2]     7,481  
Investment, Identifier [Axis]: Randys Holdings, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 1,679 1,679    
Fair value at the ending   4,594 [4],[14],[15] 1,679 [2],[12],[13]  
Investment, Identifier [Axis]: Randys Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 772 772    
Fair value at the ending   0 [4],[14] 772 [2],[12]  
Investment, Identifier [Axis]: Randys Holdings, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21],[22] 16,705 16,705    
Fair value at the ending   16,534 [4],[11],[23],[27] 16,705 [2],[7],[21],[22]  
Investment, Identifier [Axis]: Really Great Reading Company, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Really Great Reading Company, Inc. (369 Series A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 329 329    
Fair value at the ending [2]     $ 329  
Number of shares held     369  
Investment, Identifier [Axis]: Really Great Reading Company, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     $ 0  
Investment, Identifier [Axis]: Really Great Reading Company, Inc. (Series A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 64    
Number of shares held   369    
Investment, Identifier [Axis]: Really Great Reading Company, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21] 11,790 $ 11,790    
Fair value at the ending   11,364 [4],[9],[11] 11,790 [2],[20],[21]  
Investment, Identifier [Axis]: Recorded Future, Inc. (40,243 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[66] 93 93    
Fair value at the ending [2],[66]     $ 93  
Number of shares held [66]     40,243  
Investment, Identifier [Axis]: Recorded Future, Inc. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   40,243    
Investment, Identifier [Axis]: Recycled Plastics Industries, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Recycled Plastics Industries, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 4,387 4,387    
Fair value at the ending   4,161 [4],[9],[23] 4,387 [2],[22]  
Investment, Identifier [Axis]: Relevant Industrial, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   417    
Investment, Identifier [Axis]: Relevant Industrial, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Relevant Industrial, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   304    
Investment, Identifier [Axis]: Relevant Industrial, LLC (Units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 4,689    
Number of shares held   4,877,048    
Investment, Identifier [Axis]: Relevant Industrial, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   $ 17,413    
Investment, Identifier [Axis]: Relevate Health Group, LLC (14 Class X common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     14  
Investment, Identifier [Axis]: Relevate Health Group, LLC (14 Class X preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 14 14    
Fair value at the ending [2]     $ 14  
Number of shares held     14  
Investment, Identifier [Axis]: Relevate Health Group, LLC (96 Class B common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     96  
Investment, Identifier [Axis]: Relevate Health Group, LLC (96 preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 63 63    
Fair value at the ending [2]     $ 63  
Number of shares held     96  
Investment, Identifier [Axis]: Relevate Health Group, LLC (Class B common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 43    
Number of shares held   96    
Investment, Identifier [Axis]: Relevate Health Group, LLC (Class X common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 6    
Number of shares held   14    
Investment, Identifier [Axis]: Relevate Health Group, LLC (Class X preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 14    
Number of shares held   14    
Investment, Identifier [Axis]: Relevate Health Group, LLC (Preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 96    
Number of shares held   96    
Investment, Identifier [Axis]: Relevate Health Group, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 421 $ 421    
Fair value at the ending   0 [4],[14] $ 421 [2],[12]  
Investment, Identifier [Axis]: Relevate Health Group, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,102 1,102    
Fair value at the ending   1,111 [4],[27] 1,102 [2]  
Investment, Identifier [Axis]: Relevate Health Group, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 1,904 1,904    
Fair value at the ending   1,899 [4],[11],[23] 1,904 [2],[21],[22]  
Investment, Identifier [Axis]: Relevate Health Group, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21] 5,075 5,075    
Fair value at the ending   5,062 [4],[9],[11] 5,075 [2],[20],[21]  
Investment, Identifier [Axis]: Relevate Health Group, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 852 852    
Fair value at the ending   849 [4],[9] 852 [2],[20]  
Investment, Identifier [Axis]: Removery, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   12,000    
Investment, Identifier [Axis]: Reorganized Mobileum AcquisitionCo, LLC (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 567    
Number of shares held   42,031    
Investment, Identifier [Axis]: Reorganized Mobileum AcquisitionCo, LLC (fka Matrix Parent, Inc.) (37,185 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 735 $ 735    
Fair value at the ending [2],[7]     $ 735  
Number of shares held [7]     37,185  
Investment, Identifier [Axis]: Reorganized Mobileum AcquisitionCo, LLC (fka Matrix Parent, Inc.) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[35] 888 888    
Fair value at the ending [2],[7],[35]     $ 888  
Investment, Identifier [Axis]: Reorganized Mobileum AcquisitionCo, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   870    
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC (50,029 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 888 888    
Fair value at the ending [2],[7]     $ 888  
Number of shares held [7]     50,029  
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   $ 263    
Number of shares held [27]   50,029    
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 3,396 $ 3,396    
Fair value at the ending   2,233 [4],[27] $ 3,396 [2],[7]  
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 559 559    
Fair value at the ending   549 [4] 559 [2]  
Investment, Identifier [Axis]: Residential Homes for Rent LLC (446,794 Series A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18] 1,663 1,663    
Fair value at the ending [2],[8],[18]     $ 1,663  
Number of shares held [8],[18]     446,794  
Investment, Identifier [Axis]: Residential Homes for Rent LLC (Series A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19]   $ 2,751    
Number of shares held [16],[19]   736,539    
Investment, Identifier [Axis]: Residential Homes for Rent LLC (Warrant to purchase the equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19]   $ 920    
Investment, Identifier [Axis]: Residential Homes for Rent LLC (warrant to purchase up to 1.2% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18] 777 777    
Fair value at the ending [2],[8],[18]     $ 777  
Investment, Identifier [Axis]: Resin Solutions LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Resin Solutions LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Resin Solutions LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   10,973    
Investment, Identifier [Axis]: Resolute Investment Managers, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   14,670    
Investment, Identifier [Axis]: Respida Software Equity CI LP (5,000,000 Series B Preferred Units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 5,039 5,039    
Fair value at the ending [2],[18]     $ 5,039  
Number of shares held [18]     5,000,000  
Investment, Identifier [Axis]: Rita's Franchise Company, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Rita's Franchise Company, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 14,566 14,566    
Fair value at the ending   14,624 [4],[25] 14,566 [2],[24]  
Investment, Identifier [Axis]: Ro Health, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   320    
Investment, Identifier [Axis]: Ro Health, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26]   3,726    
Investment, Identifier [Axis]: Russell Investments US Institutional Holdco, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[17] 0 0    
Fair value at the ending [2],[8],[12],[17]     0  
Investment, Identifier [Axis]: Russell Investments US Institutional Holdco, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[17] 8,121 8,121    
Fair value at the ending [2],[8],[17]     8,121  
Investment, Identifier [Axis]: S&S Holdings LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 9,972 9,972    
Fair value at the ending [2],[20]     9,972  
Investment, Identifier [Axis]: S&S Holdings LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 2,885 2,885    
Fair value at the ending [2],[7]     2,885  
Investment, Identifier [Axis]: SCP ADV Infusion Purchaser, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   9,095    
Investment, Identifier [Axis]: SCP ADV Infusion Purchaser, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: SCP ADV Infusion Purchaser, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   9,615    
Investment, Identifier [Axis]: SCP Baked Goods Holdings, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: SCP Baked Goods Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: SCP Baked Goods Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,964    
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 209 209    
Fair value at the ending   18,738 [4],[14],[15] 209 [2],[12],[13]  
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21] 9,083 9,083    
Fair value at the ending   8,977 [4],[11],[27] 9,083 [2],[7],[21]  
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 10,201 10,201    
Fair value at the ending   10,084 [4] 10,201 [2]  
Investment, Identifier [Axis]: SCP Eye Care Holdco, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 7,980 7,980    
Fair value at the ending   7,888 [4] 7,980 [2]  
Investment, Identifier [Axis]: SCP Intermediate Holdings, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 0 0    
Fair value at the ending [2],[8],[12],[13]     0  
Investment, Identifier [Axis]: SCP Intermediate Holdings, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16]   0    
Investment, Identifier [Axis]: SCP Intermediate Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[20] 2,940 2,940    
Fair value at the ending   2,911 [4],[9],[16] 2,940 [2],[8],[20]  
Investment, Identifier [Axis]: SDG Corporation (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: SDG Corporation (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: SDG Corporation | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   5,926    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,821 2,821    
Fair value at the ending [2],[12],[13]     2,821  
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Delayed Draw) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Delayed Draw) 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   4,028    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   493 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[10],[25],[27]   21,021    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   8,491    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   11,751    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   7,893    
Investment, Identifier [Axis]: SDG Mgmt Company, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20],[24],[30] 21,236 21,236    
Fair value at the ending [2],[7],[20],[24],[30]     21,236  
Investment, Identifier [Axis]: SFR Holdco 2, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 2,267 2,267    
Transfers in (out)   0    
Purchases (cost)   2,852    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   (182)    
Fair value at the ending   4,937 2,267  
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 2,267 2,267 0  
Transfers in (out)     0  
Purchases (cost)     2,267  
Sales and paydowns (cost)     0  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     0  
Fair value at the ending     2,267 0
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Equity commitments)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,510 1,510 0  
Transfers in (out)   0 0  
Purchases (cost)   1,902 1,510  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   52 0  
Fair value at the ending   $ 3,464 $ 1,510 0
Percentage of equity commitments   24.40% 24.40%  
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Equity commitments) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16]   $ 3,464    
Percentage of equity commitments [16]   24.40%    
Investment, Identifier [Axis]: SFR Holdco 2, LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16]   $ 4,937    
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity commitments) (2) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16]   $ 3,715    
Percentage of equity commitments [16]   10.50%    
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity commitments) 1        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 4,797 $ 4,797 $ 4,371  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   157 426  
Fair value at the ending   $ 4,954 $ 4,797 4,371
Percentage of equity commitments   13.90% 13.90%  
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity commitments) 2        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 3,597 $ 3,597 $ 3,278  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   118 319  
Fair value at the ending   $ 3,715 $ 3,597 3,278
Percentage of equity commitments   10.50% 10.50%  
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity commitments) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16]   $ 4,954    
Percentage of equity commitments [16]   13.90%    
Investment, Identifier [Axis]: SFR Holdco, LLC 1        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 5,593 $ 5,593 $ 6,557  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   282 (964)  
Fair value at the ending   5,875 5,593 6,557
Investment, Identifier [Axis]: SFR Holdco, LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16]   5,875    
Investment, Identifier [Axis]: SFR Holdco, LLC 2        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 4,631 4,631 4,917  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   208 (286)  
Fair value at the ending   4,839 4,631 4,917
Investment, Identifier [Axis]: SFR Holdco, LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16]   4,839    
Investment, Identifier [Axis]: SHOOK Research, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 1,539    
Number of shares held [19]   1,483,871    
Investment, Identifier [Axis]: SHOOK Research, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   $ 0    
Investment, Identifier [Axis]: SHOOK Research, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[11]   11,570    
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     0  
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 5,686 5,686    
Fair value at the ending [2],[24]     5,686  
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 1,895 1,895    
Fair value at the ending [2],[21],[22]     1,895  
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 989 989    
Fair value at the ending [2],[21],[22]     989  
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 1,711 1,711    
Fair value at the ending [2],[21],[22]     1,711  
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 1,003 1,003    
Fair value at the ending [2],[21],[22]     1,003  
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) 6 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 979 979    
Fair value at the ending [2],[21],[22]     979  
Investment, Identifier [Axis]: SI Holdings, Inc. (Integrated Polymer Solutions) 7 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[21],[22] 2,181 2,181    
Fair value at the ending [2],[7],[21],[22]     2,181  
Investment, Identifier [Axis]: SIP Care Services, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 736 736    
Fair value at the ending   357 [4],[14] 736 [2]  
Investment, Identifier [Axis]: SIP Care Services, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 145 145    
Fair value at the ending   140 [4],[27] 145 [2],[7]  
Investment, Identifier [Axis]: SIP Care Services, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[22] 3,580 3,580    
Fair value at the ending   4,152 [4],[23],[27] 3,580 [2],[7],[22]  
Investment, Identifier [Axis]: STATS Intermediate Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 14,152 14,152    
Fair value at the ending   13,953 [4] 14,152 [2]  
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (171,429 Class A interests) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     171,429  
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (7,022 Class AA units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     7,022  
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (8,322 Class AAA units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     8,322  
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (Class A interests) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   171,429    
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (Class AA units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   7,022    
Investment, Identifier [Axis]: Sabrosura Foods, LLC et al (Class AAA units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   8,322    
Investment, Identifier [Axis]: Sandvine Corporation (23,212 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 0 $ 0    
Fair value at the ending [2],[7]     $ 0  
Number of shares held [7]     23,212  
Investment, Identifier [Axis]: Sandvine Corporation (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[12],[13],[35] 0 0    
Fair value at the ending [2],[7],[12],[13],[35]     $ 0  
Investment, Identifier [Axis]: Sandvine Corporation 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[35] 217 217    
Fair value at the ending [2],[7],[35]     217  
Investment, Identifier [Axis]: Sandvine Corporation 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[35] 43 43    
Fair value at the ending [2],[7],[35]     43  
Investment, Identifier [Axis]: Sandvine Corporation | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[35] 221 221    
Fair value at the ending [2],[7],[35]     221  
Investment, Identifier [Axis]: Second Avenue SFR Holdings II LLC (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0 3,323  
Transfers in (out)     0  
Purchases (cost)     0  
Sales and paydowns (cost)     (3,323)  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     0  
Fair value at the ending     0 3,323
Investment, Identifier [Axis]: Security Services Acquisition Sub Corp. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[24] 43,723 43,723    
Fair value at the ending   35,716 [4],[25],[27] 43,723 [2],[7],[24]  
Investment, Identifier [Axis]: Security Services Acquisition Sub Corp. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[24] 13,575 13,575    
Fair value at the ending   11,089 [4],[25],[27] 13,575 [2],[7],[24]  
Investment, Identifier [Axis]: Security Services Acquisition Sub Corp. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[24] 13,411 13,411    
Fair value at the ending   10,954 [4],[25],[27] 13,411 [2],[7],[24]  
Investment, Identifier [Axis]: Securly, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 969 969    
Fair value at the ending   969 [4],[14] 969 [2],[12]  
Investment, Identifier [Axis]: Securly, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 3,702 3,702    
Fair value at the ending   3,702 [4],[23] 3,702 [2],[22]  
Investment, Identifier [Axis]: Securly, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 8,400 8,400    
Fair value at the ending   8,400 [4],[23] 8,400 [2],[22]  
Investment, Identifier [Axis]: Securly, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 1,938 1,938    
Fair value at the ending   1,938 [4],[23] 1,938 [2],[22]  
Investment, Identifier [Axis]: Securly, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 2,488 2,488    
Fair value at the ending   2,488 [4],[11] 2,488 [2],[21]  
Investment, Identifier [Axis]: Securly, Inc. 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11]   457    
Investment, Identifier [Axis]: Seran BioScience, LLC (26,666 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 637 637    
Fair value at the ending [2]     $ 637  
Number of shares held     26,666  
Investment, Identifier [Axis]: Seran BioScience, LLC (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 433    
Number of shares held   27,565    
Investment, Identifier [Axis]: Seran BioScience, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Seran BioScience, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 1,923 1,923    
Fair value at the ending   1,886 [4],[9],[23] 1,923 [2],[20],[22]  
Investment, Identifier [Axis]: Seran BioScience, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24],[30] 1,148 1,148    
Fair value at the ending   225 [4],[10],[25] 1,148 [2],[24],[30]  
Investment, Identifier [Axis]: Seran BioScience, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 2,181 2,181    
Fair value at the ending   427 [4],[9] 2,181 [2],[20]  
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class A preferred interests)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   3,042    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   1,705    
Fair value at the ending   $ 4,747 0  
Number of shares held   3,042,264    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class A preferred interests) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[19]   $ 4,747    
Number of shares held [19]   3,042,264    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class B preferred interests)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   1,879    
Purchases (cost)   2,813    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   2,628    
Fair value at the ending   $ 7,320 0  
Number of shares held   4,692,038    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Class B preferred interests) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[19]   $ 7,320    
Number of shares held [19]   4,692,038    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Preferred interests)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 11,989 $ 11,989 9,192  
Transfers in (out)   (4,921) 0  
Purchases (cost)   1,879 3,042  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (8,947) (245)  
Fair value at the ending   $ 0 $ 11,989 9,192
Number of shares held   9,191,624 12,233,889  
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Preferred interests) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[19]   $ 0    
Number of shares held [19]   9,191,624    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 998 $ 998 $ 959  
Transfers in (out)   0 0  
Purchases (cost)   952 0  
Sales and paydowns (cost)   (1,244) 0  
PIK interest capitalized (cost)   57 39  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   763 998 959
Investment, Identifier [Axis]: SheerTrans Solutions, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   763    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 1        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 5,261 5,261 5,101  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   (51) (51)  
PIK interest capitalized (cost)   477 212  
Discount accretion   21 19  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (21) (20)  
Fair value at the ending   5,687 5,261 5,101
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   5,687    
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 2        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,503 1,503 0  
Transfers in (out)   0 0  
Purchases (cost)   0 1,436  
Sales and paydowns (cost)   (16) (15)  
PIK interest capitalized (cost)   136 53  
Discount accretion   5 4  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (4) 25  
Fair value at the ending   1,624 1,503 0
Investment, Identifier [Axis]: SheerTrans Solutions, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   1,624    
Investment, Identifier [Axis]: Signal 88, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 23,529 23,529    
Fair value at the ending   23,206 [4],[9],[27],[28] 23,529 [2],[7]  
Investment, Identifier [Axis]: Signiant Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Signiant Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Signiant Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[25],[28]   14,963    
Investment, Identifier [Axis]: Signiant Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   3,000    
Investment, Identifier [Axis]: Signiant Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 14,775 14,775    
Fair value at the ending [2],[24]     14,775  
Investment, Identifier [Axis]: SingleStore, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: SingleStore, Inc. (Equity commitment) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   9,359    
Total equity investment   9,359    
Investment, Identifier [Axis]: SingleStore, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: SingleStore, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   72,270    
Investment, Identifier [Axis]: Skillsoft Corp. (1,308 Class A shares) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[8],[67] 31 31    
Fair value at the ending [2],[7],[8],[67]     $ 31  
Number of shares held [7],[8],[67]     1,308  
Investment, Identifier [Axis]: Skillsoft Corp. (Class A shares) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[27],[68]   $ 12    
Number of shares held [16],[27],[68]   1,308    
Investment, Identifier [Axis]: Slater Slater Schulman LLP | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 20,774 $ 20,774    
Fair value at the ending [2]     $ 20,774  
Investment, Identifier [Axis]: SonicWall US Holdings Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[17] 5,985 5,985    
Fair value at the ending   10,422 [4],[55] 5,985 [2],[17]  
Investment, Identifier [Axis]: Sparq Holdings, Inc. (600,000 common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 645 645    
Fair value at the ending [2]     $ 645  
Number of shares held     600,000  
Investment, Identifier [Axis]: Sparq Holdings, Inc. (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 69    
Number of shares held   600,000    
Investment, Identifier [Axis]: Sparq Holdings, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 $ 0    
Fair value at the ending [2],[12],[13]     $ 0  
Investment, Identifier [Axis]: Sparq Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 41 41    
Fair value at the ending   213 [4],[14] 41 [2],[12]  
Investment, Identifier [Axis]: Sparq Holdings, Inc. (Series A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 167    
Number of shares held   83,720    
Investment, Identifier [Axis]: Sparq Holdings, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 1,982 $ 1,982    
Fair value at the ending   1,819 [4],[23] 1,982 [2],[22]  
Investment, Identifier [Axis]: Sparq Holdings, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 434 434    
Fair value at the ending   398 [4] 434 [2]  
Investment, Identifier [Axis]: Sparq Holdings, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 444 444    
Fair value at the ending   407 [4] 444 [2]  
Investment, Identifier [Axis]: Spherix Global Inc. (333 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     333  
Investment, Identifier [Axis]: Spherix Global Inc. (52 Class A-2 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 12 12    
Fair value at the ending [2]     $ 12  
Number of shares held     52  
Investment, Identifier [Axis]: Spherix Global Inc. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   333    
Investment, Identifier [Axis]: Spherix Global Inc. (Class A-2 units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 71    
Number of shares held   52    
Investment, Identifier [Axis]: Spherix Global Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   248 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Spherix Global Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 2,757 2,757    
Fair value at the ending   3,100 [4],[23] 2,757 [2],[22]  
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,198 2,198    
Fair value at the ending [2],[12],[13]     2,198  
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   231 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   4,832    
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   3,940    
Investment, Identifier [Axis]: Sports Operating Holdings II, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 4,888 4,888    
Fair value at the ending [2],[7]     4,888  
Investment, Identifier [Axis]: StarCompliance MidCo, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 2,921 2,921    
Fair value at the ending   1,651 [4],[14] 2,921 [2],[12]  
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 443 443    
Fair value at the ending   441 [4],[11],[26] 443 [2],[21]  
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22],[24],[30] 27,478 27,478    
Fair value at the ending   27,375 [4],[11],[23],[26],[28] 27,478 [2],[21],[22],[24],[30]  
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 4,269 4,269    
Fair value at the ending   4,253 [4],[23],[28] 4,269 [2],[22]  
Investment, Identifier [Axis]: StarCompliance MidCo, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 2,519 2,519    
Fair value at the ending   2,509 [4],[28] 2,519 [2],[24]  
Investment, Identifier [Axis]: Steel City Wash, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Steel City Wash, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   335    
Investment, Identifier [Axis]: Steel City Wash, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26]   13,846    
Investment, Identifier [Axis]: StormTrap, LLC (640,000 Class A common units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 407 407    
Fair value at the ending [2],[18]     $ 407  
Number of shares held [18]     640,000  
Investment, Identifier [Axis]: StormTrap, LLC (640,000 Class A preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[18] 640 640    
Fair value at the ending [2],[18]     $ 640  
Number of shares held [18]     640,000  
Investment, Identifier [Axis]: StormTrap, LLC (Class A common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 589    
Number of shares held [19]   640,000    
Investment, Identifier [Axis]: StormTrap, LLC (Class A preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 640    
Number of shares held [19]   640,000    
Investment, Identifier [Axis]: Streamland Media MidCo LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[13],[14],[33]   $ 72    
Investment, Identifier [Axis]: Streamland Media MidCo LLC (Revolver) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[33]   128    
Investment, Identifier [Axis]: Streamland Media MidCo LLC (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   8,812    
Investment, Identifier [Axis]: Streamland Media MidCo LLC (warrant to purchase up to 0.1% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 $ 0    
Fair value at the ending [2]     $ 0  
Investment, Identifier [Axis]: Streamland Media MidCo LLC (warrant to purchase up to 0.2% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     0  
Investment, Identifier [Axis]: Streamland Media MidCo LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 1,212 1,212    
Fair value at the ending   887 [4],[33] 1,212 [2],[35]  
Investment, Identifier [Axis]: Streamland Media MidCo LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 175 175    
Fair value at the ending [2],[35]     175  
Investment, Identifier [Axis]: Streamland Media MidCo LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 328 328    
Fair value at the ending   627 [4],[33] 328 [2],[35]  
Investment, Identifier [Axis]: Streamland Media MidCo LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 175 175    
Fair value at the ending [2],[35]     175  
Investment, Identifier [Axis]: Streamland Media MidCo LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 58 58    
Fair value at the ending [2],[35]     58  
Investment, Identifier [Axis]: Streamland Media MidCo LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 58 58    
Fair value at the ending [2],[35]     58  
Investment, Identifier [Axis]: Summit Professional Education, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 10,244 10,244 0  
Transfers in (out)     0  
Purchases (cost)     10,094  
Sales and paydowns (cost)     (50)  
PIK interest capitalized (cost)     0  
Discount accretion     17  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     183  
Fair value at the ending     10,244 0
Investment, Identifier [Axis]: Summit Professional Education, LLC (Class A units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 16,676 16,676 0  
Transfers in (out)   0 0  
Purchases (cost)   3,085 16,676  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (1,623) 0  
Fair value at the ending   $ 18,138 $ 16,676 0
Number of shares held   19,762 16,676  
Investment, Identifier [Axis]: Summit Professional Education, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[19]   $ 18,138    
Number of shares held [19]   19,762    
Investment, Identifier [Axis]: Summit Professional Education, LLC (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   0 $ 0  
Investment, Identifier [Axis]: Summit Professional Education, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14],[15]   0    
Investment, Identifier [Axis]: Summit Professional Education, LLC (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,145 1,145 0  
Transfers in (out)   0 0  
Purchases (cost)   735 1,145  
Sales and paydowns (cost)   (1,880) 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   0 1,145 0
Investment, Identifier [Axis]: Summit Professional Education, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   0    
Investment, Identifier [Axis]: Summit Professional Education, LLC 1        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 10,244 10,244    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   (102)    
PIK interest capitalized (cost)   0    
Discount accretion   35    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   (183)    
Fair value at the ending   9,994 10,244  
Investment, Identifier [Axis]: Summit Professional Education, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[25]   9,994    
Investment, Identifier [Axis]: Summit Professional Education, LLC 2        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   3,939    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   7    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   14    
Fair value at the ending   3,960 0  
Investment, Identifier [Axis]: Summit Professional Education, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   3,960    
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC (Delayed Draw) 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 27,772 27,772    
Fair value at the ending [2],[8],[12],[13]     27,772  
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC (Delayed Draw) 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13] 3,598 3,598    
Fair value at the ending [2],[8],[12],[13]     3,598  
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC (Delayed Draw) | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16]   33,990    
Investment, Identifier [Axis]: Sundy Village West Mezz Borrower, LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   14,877    
Investment, Identifier [Axis]: Sunstates Security, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   6,717 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Sunstates Security, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 20,400 20,400    
Fair value at the ending   20,099 [4],[9] 20,400 [2]  
Investment, Identifier [Axis]: Symplr Software, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,580 3,580    
Fair value at the ending   0 [4],[55] 3,580 [2]  
Investment, Identifier [Axis]: Syniverse Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 7,026 7,026    
Fair value at the ending   11,498 [4],[16] 7,026 [2],[8]  
Investment, Identifier [Axis]: TCFIII OWL Buyer LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[23]   4,298    
Investment, Identifier [Axis]: TCFIII OWL Buyer LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   5,248    
Investment, Identifier [Axis]: TCFIII OWL Buyer LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[23]   4,710    
Investment, Identifier [Axis]: TCFIII Owl Buyer LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 4,343 4,343    
Fair value at the ending [2],[20],[22]     4,343  
Investment, Identifier [Axis]: TCFIII Owl Buyer LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 5,303 5,303    
Fair value at the ending [2],[20]     5,303  
Investment, Identifier [Axis]: TCFIII Owl Buyer LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 4,759 4,759    
Fair value at the ending [2],[20],[22]     4,759  
Investment, Identifier [Axis]: TEAM Public Choices, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 4,499 4,499    
Fair value at the ending   4,421 [4],[27] 4,499 [2],[7]  
Investment, Identifier [Axis]: TEAM Public Choices, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 1,495 1,495    
Fair value at the ending   1,468 [4],[25] 1,495 [2],[24]  
Investment, Identifier [Axis]: TIC Bidco Limited | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[38],[65] 14,289 14,289    
Fair value at the ending   17,534 [4],[16],[29],[40] 14,289 [2],[8],[38],[65]  
Investment, Identifier [Axis]: Talent Systems, LLC (fka Moonraker Acquisitionco LLC) (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Talent Systems, LLC (fka Moonraker Acquisitionco LLC) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   6,668    
Investment, Identifier [Axis]: Talos Energy Inc. (12,138 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[8],[67] 118 118    
Fair value at the ending [2],[7],[8],[67]     $ 118  
Number of shares held [7],[8],[67]     12,138  
Investment, Identifier [Axis]: Talos Energy Inc. (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[27],[68]   $ 133    
Number of shares held [16],[27],[68]   12,138    
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 1,070    
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Revolver) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[16],[32]   0    
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Revolver) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Tavoron Buyer Corp. (Units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 2,460    
Number of shares held   2,417,450    
Investment, Identifier [Axis]: Tavoron Buyer Corp. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[26]   $ 7,600    
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC (Common units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 1,169    
Number of shares held [19]   1,159    
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   $ 0    
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Tax Protection BuyCo, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[10],[26],[28]   23,892    
Investment, Identifier [Axis]: Tegra118 Wealth Solutions, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   1,751    
Investment, Identifier [Axis]: Teneo Holdings LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[17],[24] 8,280 8,280    
Fair value at the ending [2],[17],[24]     $ 8,280  
Investment, Identifier [Axis]: Tenneco Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[17],[20] 12,774 12,774    
Fair value at the ending [2],[7],[17],[20]     12,774  
Investment, Identifier [Axis]: The Black Tux, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   796 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: The Black Tux, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: The Black Tux, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21],[30] 10,437 10,437    
Fair value at the ending   9,368 [4],[9],[10],[11] 10,437 [2],[20],[21],[30]  
Investment, Identifier [Axis]: The Gersh Agency, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: The Gersh Agency, LLC (Revolver) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[69] 0 0    
Fair value at the ending   1,404 [4],[14],[16],[39] 0 [2],[8],[12],[69]  
Investment, Identifier [Axis]: The Gersh Agency, LLC (Revolver) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 1,274 1,274    
Fair value at the ending   3,220 [4],[14] 1,274 [2],[12]  
Investment, Identifier [Axis]: The Gersh Agency, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[69] 5,637 5,637    
Fair value at the ending   6,176 [4],[16],[39] 5,637 [2],[8],[69]  
Investment, Identifier [Axis]: The Gersh Agency, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[69] 17,252 17,252    
Fair value at the ending   18,900 [4],[16],[39] 17,252 [2],[8],[69]  
Investment, Identifier [Axis]: The Gersh Agency, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 6,305 6,305    
Fair value at the ending   6,082 [4],[25] 6,305 [2],[24]  
Investment, Identifier [Axis]: The Gersh Agency, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 13,348 13,348    
Fair value at the ending   12,876 [4],[25] 13,348 [2],[24]  
Investment, Identifier [Axis]: The Hertz Corporation 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 7,491 7,491    
Fair value at the ending   6,908 [4],[16] 7,491 [2],[8]  
Investment, Identifier [Axis]: The Hertz Corporation 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 1,463 1,463    
Fair value at the ending   1,363 [4],[16] 1,463 [2],[8]  
Investment, Identifier [Axis]: The Kyjen Company, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 268 268    
Fair value at the ending   0 [4],[14],[33] 268 [2]  
Investment, Identifier [Axis]: The Kyjen Company, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[22] 2,905 2,905    
Fair value at the ending   2,153 [4],[23],[27],[33] 2,905 [2],[7],[22]  
Investment, Identifier [Axis]: The Kyjen Company, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3 3    
Fair value at the ending   5 [4],[33] 3 [2]  
Investment, Identifier [Axis]: The Smilist DSO, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 5,349 5,349    
Fair value at the ending [2],[12],[13]     5,349  
Investment, Identifier [Axis]: The Smilist DSO, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: The Smilist DSO, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   9,733    
Investment, Identifier [Axis]: The Smilist DSO, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: The Smilist DSO, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 28,669 28,669    
Fair value at the ending   28,522 [4],[9],[10],[25] 28,669 [2],[24]  
Investment, Identifier [Axis]: The Smilist DSO, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 7,751 7,751    
Fair value at the ending   7,711 [4],[10],[28] 7,751 [2]  
Investment, Identifier [Axis]: The Smilist DSO, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   6,193    
Investment, Identifier [Axis]: Thrasio, LLC (2,162,506 units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     2,162,506  
Investment, Identifier [Axis]: Thrasio, LLC (31,764 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 874 874    
Fair value at the ending [2]     $ 874  
Number of shares held     31,764  
Investment, Identifier [Axis]: Thrasio, LLC (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   31,764    
Investment, Identifier [Axis]: Thrasio, LLC (Units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   2,162,506    
Investment, Identifier [Axis]: Thrasio, LLC | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 1,397 $ 1,397    
Fair value at the ending   1,477 [4],[33] $ 1,397 [2],[35]  
Investment, Identifier [Axis]: Thrasio, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 546 546    
Fair value at the ending   574 [4],[33] 546 [2],[35]  
Investment, Identifier [Axis]: Thryv, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 7,895 7,895    
Fair value at the ending [2],[8]     7,895  
Investment, Identifier [Axis]: TigerConnect, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: TigerConnect, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 811 811    
Fair value at the ending [2],[12],[13]     811  
Investment, Identifier [Axis]: TigerConnect, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: TigerConnect, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 9,925 9,925    
Fair value at the ending   10,002 [4],[23] 9,925 [2],[22]  
Investment, Identifier [Axis]: TigerConnect, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 567 567    
Fair value at the ending   571 [4] 567 [2]  
Investment, Identifier [Axis]: TigerConnect, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[28]   3,038    
Investment, Identifier [Axis]: TigerConnect, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   52    
Investment, Identifier [Axis]: TigerConnect, Inc. 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   1,253    
Investment, Identifier [Axis]: Tiugo Group Holdings Corp (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Tiugo Group Holdings Corp (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Tiugo Group Holdings Corp | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[10],[25],[26],[28]   66,222    
Investment, Identifier [Axis]: Together Women's Health, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   1,148    
Investment, Identifier [Axis]: Together Women's Health, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Together Women's Health, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   8,975    
Investment, Identifier [Axis]: Touchmath Acquisition LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Touchmath Acquisition LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 9,516 9,516    
Fair value at the ending   9,178 [4],[25] 9,516 [2],[24]  
Investment, Identifier [Axis]: Touchtunes Music Group, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   4,626    
Investment, Identifier [Axis]: Transnetwork LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 15,838 15,838    
Fair value at the ending   14,784 [4],[25],[26],[28] 15,838 [2],[24]  
Investment, Identifier [Axis]: Triad Financial Services, Inc (equity commitment)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 4,803 4,803 0  
Transfers in (out)     0  
Purchases (cost)     4,803  
Sales and paydowns (cost)     0  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     0  
Fair value at the ending     4,803 0
Amount of total commitment     4,803  
Total equity investment     41,855  
Investment, Identifier [Axis]: Triad Financial Services, Inc. (Equity commitment)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 4,803 4,803    
Transfers in (out)   0    
Purchases (cost)   2,099    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   6,902 4,803  
Amount of total commitment   6,902    
Total equity investment   41,855    
Investment, Identifier [Axis]: Triad Financial Services, Inc. (Equity commitment) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[16],[70]   6,902    
Amount of total commitment [16],[70]   6,902    
Total equity investment [16],[70]   41,855    
Investment, Identifier [Axis]: Trilon Group, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,614 2,614    
Fair value at the ending   2,853 [4],[14],[15] 2,614 [2],[12],[13]  
Investment, Identifier [Axis]: Trilon Group, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 609 609    
Fair value at the ending   0 [4],[14] 609 [2],[12]  
Investment, Identifier [Axis]: Trilon Group, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,603 3,603    
Fair value at the ending   11,599 [4],[9],[10],[11],[23],[28] 3,603 [2]  
Investment, Identifier [Axis]: Trilon Group, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[21],[22],[30] 11,729 11,729    
Fair value at the ending   3,563 [4],[9] 11,729 [2],[20],[21],[22],[30]  
Investment, Identifier [Axis]: Trilon Group, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 370 370    
Fair value at the ending   12,016 [4],[9],[28] 370 [2]  
Investment, Identifier [Axis]: Trilon Group, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   365    
Investment, Identifier [Axis]: Trilon Group, LLC 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9],[26]   10,137    
Investment, Identifier [Axis]: Truck-Lite Co., LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Truck-Lite Co., LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending [2],[12]     0  
Investment, Identifier [Axis]: Truck-Lite Co., LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 9,861 9,861    
Fair value at the ending [2]     9,861  
Investment, Identifier [Axis]: USLIVE OPCO, INC. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: USLIVE OPCO, INC. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   10,005    
Investment, Identifier [Axis]: Ultra Clean Holdco LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 2,987 2,987    
Fair value at the ending   3,686 [4],[14],[15] 2,987 [2],[12],[13]  
Investment, Identifier [Axis]: Ultra Clean Holdco LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Ultra Clean Holdco LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 20,832 20,832    
Fair value at the ending   20,551 [4],[10],[25] 20,832 [2],[24]  
Investment, Identifier [Axis]: Unanet, Inc. (1,621,053 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 2,804 2,804    
Fair value at the ending [2]     $ 2,804  
Number of shares held     1,621,053  
Investment, Identifier [Axis]: Unanet, Inc. (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 3,393 3,393    
Fair value at the ending   4,956 [4],[14],[15] $ 3,393 [2],[12],[13]  
Investment, Identifier [Axis]: Unanet, Inc. (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Unanet, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Unanet, Inc. (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 2,918    
Number of shares held   1,621,053    
Investment, Identifier [Axis]: Unanet, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 22,000 $ 22,000    
Fair value at the ending   22,000 [4],[11],[23] 22,000 [2],[21],[22]  
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Delayed Draw) 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 4,639 4,639    
Fair value at the ending [2],[12],[13]     4,639  
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Delayed Draw) 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Delayed Draw) 5 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending [2],[12],[13]     0  
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   4,176    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   1,123 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27],[28]   17,886    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   2,082    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   7,451    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   3,337    
Investment, Identifier [Axis]: Valkyrie Buyer, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 18,005 18,005    
Fair value at the ending [2],[7]     18,005  
Investment, Identifier [Axis]: Vanterra Holdings, LLC (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Vanterra Holdings, LLC (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Vanterra Holdings, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Vanterra Holdings, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27]   10,500    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation (Delayed Draw) 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16],[42]   0    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation (Delayed Draw) 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15],[16],[42]   0    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13],[34],[41] 0 0    
Fair value at the ending [2],[8],[12],[13],[34],[41]     0  
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[41] 0 0    
Fair value at the ending   0 [4],[14],[16],[42] 0 [2],[8],[12],[41]  
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[42]   12,328    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[42]   29,057    
Investment, Identifier [Axis]: Varicent Intermediate Holdings Corporation | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 26,428 26,428    
Fair value at the ending [2],[8],[41]     26,428  
Investment, Identifier [Axis]: Velociti, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Velociti, LLC (Units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[19]   $ 6,137    
Number of shares held [19]   6,075,951    
Investment, Identifier [Axis]: Velociti, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[25]   $ 11,940    
Investment, Identifier [Axis]: Velociti, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[9]   4,295    
Investment, Identifier [Axis]: Veritas Buyer, LLC and DecisionHR Holdings, Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14],[15]   0    
Investment, Identifier [Axis]: Veritas Buyer, LLC and DecisionHR Holdings, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[14]   0    
Investment, Identifier [Axis]: Veritas Buyer, LLC and DecisionHR Holdings, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   19,404    
Investment, Identifier [Axis]: Vero Biotech Inc. (Warrant to purchase the equity) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   102    
Investment, Identifier [Axis]: Vero Biotech Inc. (warrant to purchase up to 2.3% of the equity) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 182 182    
Fair value at the ending [2]     182  
Investment, Identifier [Axis]: Vero Biotech Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 29,471 29,471    
Fair value at the ending   29,604 [4] 29,471 [2]  
Investment, Identifier [Axis]: Vhagar Purchaser, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 504 504    
Fair value at the ending   0 [4],[14],[15] 504 [2],[12],[13]  
Investment, Identifier [Axis]: Vhagar Purchaser, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Vhagar Purchaser, LLC 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[11],[27],[28]   29,370    
Investment, Identifier [Axis]: Vhagar Purchaser, LLC 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[27],[28]   13,350    
Investment, Identifier [Axis]: Vhagar Purchaser, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21] 10,075 10,075    
Fair value at the ending [2],[21]     10,075  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC (1,110,000 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 0 0    
Fair value at the ending [2]     $ 0  
Number of shares held     1,110,000  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 0    
Number of shares held   1,110,000    
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35],[71] 0 $ 0    
Fair value at the ending   0 [4],[33],[72] $ 0 [2],[35],[71]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35],[71] 0 0    
Fair value at the ending   0 [4],[33],[72] 0 [2],[35],[71]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 3 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35],[71] 0 0    
Fair value at the ending   0 [4],[33],[72] 0 [2],[35],[71]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 4 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35],[71] 0 0    
Fair value at the ending   0 [4],[33],[72] 0 [2],[35],[71]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 5 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 246 246    
Fair value at the ending   38 [4],[33] 246 [2],[35]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 6 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 74 74    
Fair value at the ending   11 [4],[33] 74 [2],[35]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 7 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 130 130    
Fair value at the ending   20 [4],[33] 130 [2],[35]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC 8 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 0 0    
Fair value at the ending   0 [4],[33] 0 [2],[35]  
Investment, Identifier [Axis]: Vice Acquisition Holdco, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[35] 417 417    
Fair value at the ending   454 [4],[33] 417 [2],[35]  
Investment, Identifier [Axis]: Volt Bidco, Inc. (878 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 1,092 1,092    
Fair value at the ending [2]     $ 1,092  
Number of shares held     878  
Investment, Identifier [Axis]: Volt Bidco, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: Volt Bidco, Inc. (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 776    
Number of shares held   878    
Investment, Identifier [Axis]: Volt Bidco, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 9,136 $ 9,136    
Fair value at the ending   9,809 [4] 9,136 [2],[22]  
Investment, Identifier [Axis]: Volt Bidco, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[24] 1,717 1,717    
Fair value at the ending   1,844 [4],[25] 1,717 [2],[24]  
Investment, Identifier [Axis]: Volt Bidco, Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 712 712    
Fair value at the ending   765 [4],[26] 712 [2]  
Investment, Identifier [Axis]: Volt Bidco, Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 987 987    
Fair value at the ending   1,060 [4],[26] 987 [2]  
Investment, Identifier [Axis]: WPEngine, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: WPEngine, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[21],[22] 16,640 16,640    
Fair value at the ending   16,500 [4],[11],[23] 16,640 [2],[21],[22]  
Investment, Identifier [Axis]: Watchguard Technologies, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 20,532 20,532    
Fair value at the ending   20,479 [4],[27],[28] 20,532 [2],[7]  
Investment, Identifier [Axis]: Water Buyer, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 0 0    
Fair value at the ending   0 [4],[14],[15] 0 [2],[12],[13]  
Investment, Identifier [Axis]: Water Buyer, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   400 [4],[14] 0 [2],[12]  
Investment, Identifier [Axis]: Water Buyer, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[30] 9,950 9,950    
Fair value at the ending   9,890 [4],[10] 9,950 [2],[30]  
Investment, Identifier [Axis]: WebPT, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 275 275    
Fair value at the ending   433 [4],[14] 275 [2],[12]  
Investment, Identifier [Axis]: WebPT, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] 5,000 5,000    
Fair value at the ending   4,750 [4],[23] 5,000 [2],[22]  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc.        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 22,772 22,772 0  
Transfers in (out)   0 25,676  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   2,202 276  
Discount accretion   71 133  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (9,473) (3,313)  
Fair value at the ending   15,572 22,772 0
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,980 1,980 0  
Transfers in (out)     1,614  
Purchases (cost)     311  
Sales and paydowns (cost)     0  
PIK interest capitalized (cost)     55  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     0  
Fair value at the ending     1,980 0
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,539 1,539 0  
Transfers in (out)   0 0  
Purchases (cost)   1,752 1,523  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   196 16  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   3,487 1,539 0
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   3,487    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series A preferred stock)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0 0  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   $ 0 $ 0 0
Number of shares held   518,970 518,970  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series A preferred stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 0    
Number of shares held   518,970    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series B preferred stock)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0 $ 0  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   $ 0 $ 0 0
Number of shares held   116,083 116,083  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. (Series B preferred stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 0    
Number of shares held   116,083    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. 1        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 1,980 $ 1,980    
Transfers in (out)   0    
Purchases (cost)   990    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   227    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   3,197 $ 1,980  
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   15,572    
Investment, Identifier [Axis]: Whistler Parent Holdings III, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   3,197    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC (2,992 preferred units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[18] 5,200 5,200    
Fair value at the ending [2],[8],[18]     $ 5,200  
Number of shares held [8],[18]     2,992  
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC (Preferred units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[19]   $ 6,421    
Number of shares held [16],[19]   2,992    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 1 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 455 $ 455    
Fair value at the ending   928 [4],[16] $ 455 [2],[8]  
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 2 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 10,033 10,033    
Fair value at the ending   1,767 [4],[16] 10,033 [2],[8]  
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 3 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 1,736 1,736    
Fair value at the ending   519 [4],[16] 1,736 [2],[8]  
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 4 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 3,114 3,114    
Fair value at the ending   11,465 [4],[16] 3,114 [2],[8]  
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 5 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8] 2,135 2,135    
Fair value at the ending   1,983 [4],[16] 2,135 [2],[8]  
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 6 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   3,559    
Investment, Identifier [Axis]: Witkoff/Monroe 700 JV LLC 7 | Junior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16]   2,440    
Investment, Identifier [Axis]: XanEdu Publishing, Inc. (65,104 Class A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 278 278    
Fair value at the ending [2]     $ 278  
Number of shares held     65,104  
Investment, Identifier [Axis]: XanEdu Publishing, Inc. (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 127    
Number of shares held   65,104    
Investment, Identifier [Axis]: XanEdu Publishing, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 $ 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: XanEdu Publishing, Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20],[22] 5,596 5,596    
Fair value at the ending   5,522 [4],[9],[23] 5,596 [2],[20],[22]  
Investment, Identifier [Axis]: XanEdu Publishing, Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[20] 2,224 2,224    
Fair value at the ending   2,195 [4],[9] 2,224 [2],[20]  
Investment, Identifier [Axis]: Xpress Wellness, LLC (18,310 Series A units) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 18,535 18,535    
Fair value at the ending [2]     $ 18,535  
Number of shares held     18,310  
Investment, Identifier [Axis]: Xpress Wellness, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12],[13] 451 451    
Fair value at the ending   3,867 [4],[14],[15] $ 451 [2],[12],[13]  
Investment, Identifier [Axis]: Xpress Wellness, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 6,462 6,462    
Fair value at the ending   7,015 [4],[14] 6,462 [2],[12]  
Investment, Identifier [Axis]: Xpress Wellness, LLC (Series A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 14,312    
Number of shares held   18,310    
Investment, Identifier [Axis]: Xpress Wellness, LLC (Series C units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 1,040    
Number of shares held   816    
Investment, Identifier [Axis]: Xpress Wellness, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7],[20] 40,112 $ 40,112    
Fair value at the ending   38,985 [4],[27] 40,112 [2],[7],[20]  
Investment, Identifier [Axis]: YBR OZ ECE, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   1,961    
Sales and paydowns (cost)   (10)    
PIK interest capitalized (cost)   0    
Discount accretion   6    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   37    
Fair value at the ending   1,994 0  
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Class A units)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   6,875    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   $ 6,875 0  
Number of shares held   6,875    
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Class A units) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   $ 6,875    
Number of shares held   6,875    
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Delayed Draw)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 $ 0    
Transfers in (out)   0    
Purchases (cost)   900    
Sales and paydowns (cost)   (1)    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   2    
Fair value at the ending   901 0  
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14],[15]   901    
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 0 0    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   0    
Fair value at the ending   0 0  
Investment, Identifier [Axis]: YBR OZ ECE, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   0    
Investment, Identifier [Axis]: YBR OZ ECE, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[9]   1,994    
Investment, Identifier [Axis]: ZI Intermediate II, Inc. (3,790 shares of common stock) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2] 3,920 3,920    
Fair value at the ending [2]     $ 3,920  
Number of shares held     3,790  
Investment, Identifier [Axis]: ZI Intermediate II, Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[12] 0 0    
Fair value at the ending   0 [4],[14] $ 0 [2],[12]  
Investment, Identifier [Axis]: ZI Intermediate II, Inc. (Shares of common stock) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4]   $ 4,088    
Number of shares held   3,790    
Investment, Identifier [Axis]: ZI Intermediate II, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[7] 57,078 $ 57,078    
Fair value at the ending   82,291 [4],[27],[28] 57,078 [2],[7]  
Investment, Identifier [Axis]: Zodega Landscaping, LLC        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 12,431 12,431 11,969  
Transfers in (out)   0 0  
Purchases (cost)   0 0  
Sales and paydowns (cost)   (121) (119)  
PIK interest capitalized (cost)   0 0  
Discount accretion   94 80  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   (123) 501  
Fair value at the ending   $ 12,281 12,431 11,969
Investment, Identifier [Axis]: Zodega Landscaping, LLC ( preferred interests)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Number of units held   146,757    
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Preferred interestes)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 15,130 $ 15,130 12,421  
Transfers in (out)     0  
Purchases (cost)     2,255  
Sales and paydowns (cost)     0  
PIK interest capitalized (cost)     0  
Discount accretion     0  
Net realized gain (loss)     0  
Net change in unrealized gain (loss)     454  
Fair value at the ending     $ 15,130 12,421
Number of units held     146,757  
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Preferred interests) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[73]   $ 18,148    
Number of shares held [73]   146,757    
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Revolver)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 992 $ 992 $ 0  
Transfers in (out)   0 0  
Purchases (cost)   0 992  
Sales and paydowns (cost)   0 0  
PIK interest capitalized (cost)   0 0  
Discount accretion   0 0  
Net realized gain (loss)   0 0  
Net change in unrealized gain (loss)   0 0  
Fair value at the ending   992 992 $ 0
Investment, Identifier [Axis]: Zodega Landscaping, LLC (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6],[14]   992    
Investment, Identifier [Axis]: Zodega Landscaping, LLC (preferred interests)        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning 15,130 15,130    
Transfers in (out)   0    
Purchases (cost)   0    
Sales and paydowns (cost)   0    
PIK interest capitalized (cost)   0    
Discount accretion   0    
Net realized gain (loss)   0    
Net change in unrealized gain (loss)   3,018    
Fair value at the ending   18,148 15,130  
Investment, Identifier [Axis]: Zodega Landscaping, LLC | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[6]   12,281    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (96,603 preferred shares) | Equity Investments        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 714 714    
Fair value at the ending [2],[8],[41]     $ 714  
Number of shares held [8],[41]     96,603  
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Class B preferred shares) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[42]   $ 217    
Number of shares held [16],[42]   96,603    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Class C preferred shares) | Equity Securities        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[42]   $ 51    
Number of shares held [16],[42]   18,328    
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Delayed Draw) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[13],[41] 2,149 $ 2,149    
Fair value at the ending   1,644 [4],[14],[15],[16],[42] $ 2,149 [2],[8],[12],[13],[41]  
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. (Revolver) | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[12],[41] 0 0    
Fair value at the ending   0 [4],[14],[16],[42] 0 [2],[8],[12],[41]  
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 1 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[22],[41] 16,535 16,535    
Fair value at the ending   13,508 [4],[16],[23],[42] 16,535 [2],[8],[22],[41]  
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 2 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[22],[41] 1,291 1,291    
Fair value at the ending   1,050 [4],[16],[23],[42] 1,291 [2],[8],[22],[41]  
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 3 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[8],[41] 2,063 2,063    
Fair value at the ending   2,211 [4],[16],[42] 2,063 [2],[8],[41]  
Investment, Identifier [Axis]: ecMarket Inc. and Conexiom US Inc. 4 | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the ending [4],[16],[42]   1,679    
Investment, Identifier [Axis]: iCIMS, Inc. | Senior Secured Loans        
Transactions with Affiliated Companies, Fair value Roll Forward        
Fair value at the beginning [2],[22] $ 8,000 8,000    
Fair value at the ending   $ 7,820 [4],[23] $ 8,000 [2],[22]  
[1] All of the Company’s investments are issued by eligible portfolio companies, as defined in the Investment Company Act of 1940, as amended, (the “1940 Act”), unless otherwise noted. All of the Company’s investments are issued by U.S. portfolio companies unless otherwise noted.
[2] Except as otherwise noted, because there is no readily available market value for these investments, the fair value of each of these investments is determined in good faith using significant unobservable inputs by the Valuation Designee. (See Note 4 in the accompanying notes to the consolidated financial statements).
[3] All of the Company’s investments are issued by eligible portfolio companies, as defined in the Investment Company Act of 1940, as amended, (the “1940 Act”), unless otherwise noted. All of the Company’s investments are issued by U.S. portfolio companies unless otherwise noted.
[4] Except as otherwise noted, because there is no readily available market value for these investments, the fair value of each of these investments is determined in good faith using significant unobservable inputs by the Valuation Designee. (See Note 4 in the accompanying notes to the consolidated financial statements).
[5] As defined in the 1940 Act, the Company is deemed to be an “Affiliated Person” of the portfolio company as it owns 5% or more of the portfolio company’s voting securities. See Note 5 in the accompanying notes to the consolidated financial statements for additional information on transactions in which the issuer was an Affiliated Person (but not a portfolio company that the Company is deemed to control).
[6] As defined in the 1940 Act, the Company is deemed to be an “Affiliated Person” of the portfolio company as it owns 5% or more of the portfolio company’s voting securities. See Note 5 in the accompanying notes to the consolidated financial statements for additional information on transactions in which the issuer was an Affiliated Person (but not a portfolio company that the Company is deemed to control).
[7] All or a portion of this security was held in MC Income Plus Financing SPV LLC (the “SPV”) as collateral for the Company’s secured revolving credit facility (the “SPV Credit Facility”) with KeyBank National Association. (See Note 7 in the accompanying notes to the consolidated financial statements).
[8] This investment is treated as a non-qualifying asset under Section 55(a) of the 1940 Act. Under the 1940 Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company’s total assets. As of December 31, 2024, non-qualifying assets totaled 11.4% of the Company’s total assets.
[9] All or a portion of this security was held in MC Income Plus Financing SPV II LLC (the “SPV II”) as collateral for the Company’s senior secured credit facility (the “SPV II Credit Facility”) with KeyBank National Association. (See Note 7 in the accompanying notes to the consolidated financial statements).
[10] All or a portion of this security was held in MC Income Plus Financing SPV III LLC (the “SPV III”) as collateral for the Company’s secured revolving credit facility (the “SPV III Credit Facility”) with Goldman Sachs Bank USA. (See Note 7 in the accompanying notes to the consolidated financial statements).
[11] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding II, LLC (the “2023 Issuer”) as collateral for the Company’s asset-backed securitization (the “2023 ABS”). (See Note 7 in the accompanying notes to the consolidated financial statements).
[12] All or a portion of this commitment was unfunded at December 31, 2024. As such, interest is earned only on the funded portion of this commitment.
[13] This delayed draw loan requires that certain financial covenants be met by the portfolio company prior to any fundings by the Company.
[14] All or a portion of this commitment was unfunded at December 31, 2025. As such, interest is earned only on the funded portion of this commitment.
[15] This delayed draw loan requires that certain financial covenants be met by the portfolio company prior to any fundings by the Company.
[16] This investment is treated as a non-qualifying asset under Section 55(a) of the 1940 Act. Under the 1940 Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company’s total assets. As of December 31, 2025, non-qualifying assets totaled 12.7% of the Company’s total assets.
[17] Investment position or portion thereof unsettled as of December 31, 2024.
[18] Investment is held by a taxable subsidiary of the Company. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s wholly-owned taxable subsidiaries.
[19] Investment is held by a taxable subsidiary of the Company. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s wholly-owned taxable subsidiaries.
[20] All or a portion of this security was held in MC Income Plus Financing SPV II LLC (the “SPV II”) as collateral for the Company’s senior secured term credit facility (the “SPV II Credit Facility”) with KeyBank National Association. (See Note 7 in the accompanying notes to the consolidated financial statements).
[21] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding II, LLC (the “2023 Issuer”) as collateral for the Company’s asset-backed securitization (the “2023 ABS”). (See Note 7 in the accompanying notes to the consolidated financial statements).
[22] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding, LLC (the “2022 Issuer”) as collateral for the Company’s asset-backed securitization (the “2022 ABS”). (See Note 7 in the accompanying notes to the consolidated financial statements).
[23] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding, LLC (the “2022 Issuer”) as collateral for the Company’s asset-backed securitization (the “2022 ABS”). (See Note 7 in the accompanying notes to the consolidated financial statements).
[24] All or a portion of this security was held in MC Income Plus Financing SPV IV LLC (the “SPV IV”) as collateral for the Company’s secured revolving credit facility (the “SPV IV Credit Facility”) with Capital One, National Association. (See Note 7 in the accompanying notes to the consolidated financial statements).
[25] All or a portion of this security was held in MC Income Plus Financing SPV IV LLC (the “SPV IV”) as collateral for the Company’s secured revolving credit facility (the “SPV IV Credit Facility”) with Capital One, National Association. (See Note 7 in the accompanying notes to the consolidated financial statements).
[26] All or a portion of this security was held in MC Income Plus Financing SPV V LLC (the "SPV V") as collateral for the Company's secured revolving credit facility (the "SPV V Credit Facility") with Capital One, National Association. (See Note 7 in the accompanying notes to the consolidated financial statements).
[27] All or a portion of this security was held in MC Income Plus Financing SPV LLC (the “SPV”) as collateral for the Company’s secured revolving credit facility (the “SPV Credit Facility”) with KeyBank National Association. (See Note 7 in the accompanying notes to the consolidated financial statements).
[28] All or a portion of this security was held in Monroe Capital Income Plus ABS Funding III, LLC (the “2025 Issuer”) as collateral for the Company’s asset-backed securitization (the “2025 ABS”). (See Note 7 in the accompanying notes to the consolidated financial statements).
[29] The headquarters of this portfolio company is located in United Kingdom.
[30] All or a portion of this security was held in MC Income Plus Financing SPV III LLC (the “SPV III”) as collateral for the Company’s secured revolving credit facility (the “SPV III Credit Facility”) with Goldman Sachs Bank USA. (See Note 7 in the accompanying notes to the consolidated financial statements).
[31] This loan is denominated in Canadian dollars and is translated into U.S. dollars as of the valuation date.
[32] This loan is denominated in Canadian dollars and is translated into U.S. dollars as of the valuation date.
[33] This position was on non-accrual status as of December 31, 2025, meaning that the Company has ceased accruing interest income on the position. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s accounting policies.
[34] Investments without an interest rate are non-income producing.
[35] This position was on non-accrual status as of December 31, 2024, meaning that the Company has ceased accruing interest income on the position. See Note 2 in the accompanying notes to the consolidated financial statements for additional information on the Company’s accounting policies.
[36] As of December 31, 2024, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $37,052 for a total commitment of $41,855.
[37] As of December 31, 2024, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $1,197.
[38] The headquarters of this portfolio company is located in United Kingdom.
[39] This loan is denominated in Euros and is translated into U.S. dollars as of the valuation date.
[40] This loan is denominated in Great Britain pounds and is translated into U.S. dollars as of the valuation date.
[41] The headquarters of this portfolio company is located in Canada.
[42] The headquarters of this portfolio company is located in Canada.
[43] The headquarters of this portfolio company is located in Luxembourg.
[44] As of December 31, 2024, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $835.
[45] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $835
[46] The headquarters of this portfolio company is located in Ireland.
[47] The headquarters of this portfolio company is located in France.
[48] The headquarters of this portfolio company is located in France.
[49] The investment is subject to a servicing agreement whereby the Fund earns a pooled effective yield of 18.1%.
[50] The investment is subject to a servicing agreement whereby the Fund earns a pooled effective yield of 14.7%.
[51] The headquarters of this portfolio company is located in Finland.
[52] As of December 31, 2024, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $34.
[53] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $1,091 for a total commitment of $3,536.
[54] The headquarters of this portfolio company is located in Costa Rica.
[55] Investment position or portion thereof unsettled as of December 31, 2025.
[56] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $565.
[57] As of December 31, 2024, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $697.
[58] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $24,478 for a total commitment of $45,000.
[59] The headquarters of this portfolio company is located in Australia.
[60] This loan is denominated in Australian dollars and is translated into U.S. dollars as of the valuation date.
[61] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $884.
[62] The headquarters of this portfolio company is located in Australia.
[63] This loan is denominated in Australian dollars and is translated into U.S. dollars as of the valuation date.
[64] The investment is subject to a servicing agreement whereby the Fund earns a pooled effective yield of 15.1%.
[65] This loan is denominated in Great Britain pounds and is translated into U.S. dollars as of the valuation date.
[66] As of December 31, 2024, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $8.
[67] The fair value of this investment was valued using Level 1 inputs. See Note 4 in the accompanying notes to the consolidated financial statements.
[68] The fair value of this investment was valued using Level 1 inputs. See Note 4 in the accompanying notes to the consolidated financial statements.
[69] This loan is denominated in Euros and is translated into U.S. dollars as of the valuation date.
[70] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $34,952 for a total commitment of $41,855.
[71] This is a demand note with no stated maturity.
[72] This is a demand note with no stated maturity.
[73] As of December 31, 2025, the Company was party to a subscription agreement with a commitment to fund an additional equity investment of $1,197.