v3.26.1
Fair Value of Financial Instruments - Schedule of industry/geographic composition of SCP's portfolio at fair value (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Schedule of Investments [Line Items]    
Amortized Cost $ 8,612,475 [1],[2],[3] $ 7,892,866
Fair Value $ 8,653,350 [3],[4] $ 8,108,654
Investment fair value percentage 100.00% 100.00%
SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,664,368  
Fair Value $ 1,659,630  
Investment fair value percentage 100.00%  
Australia | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,980  
Fair Value $ 2,009  
Investment fair value percentage 0.10%  
Canada    
Schedule of Investments [Line Items]    
Investment fair value percentage [5] 2.40% 0.00%
Canada | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 16,308  
Fair Value $ 16,208  
Investment fair value percentage 1.00%  
Germany    
Schedule of Investments [Line Items]    
Investment fair value percentage 1.10% 1.30%
Germany | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 15,482  
Fair Value $ 15,573  
Investment fair value percentage 0.90%  
Ireland | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 879  
Fair Value $ 877  
Investment fair value percentage 0.10%  
Luxembourg | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 19,504  
Fair Value $ 19,393  
Investment fair value percentage 1.20%  
Netherlands    
Schedule of Investments [Line Items]    
Investment fair value percentage 0.10% 0.20%
Netherlands | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 22,163  
Fair Value $ 22,267  
Investment fair value percentage 1.30%  
Switzerland | SCP    
Schedule of Investments [Line Items]    
Amortized Cost [6] $ 631  
Fair Value [6] $ 658  
Investment fair value percentage [6] 0.00%  
United Kingdom    
Schedule of Investments [Line Items]    
Investment fair value percentage 7.10% 8.90%
United Kingdom | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 21,391  
Fair Value $ 21,160  
Investment fair value percentage 1.30%  
United States | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 1,566,030  
Fair Value $ 1,561,485  
Investment fair value percentage 94.10%  
Aerospace & Defense | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 77,745  
Fair Value $ 77,745  
Investment fair value percentage 4.70%  
Auto Aftermarket & Services | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 45,943  
Fair Value $ 45,985  
Investment fair value percentage 2.80%  
Beverage & Food | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 50,150  
Fair Value $ 50,261  
Investment fair value percentage 3.00%  
Business Services    
Schedule of Investments [Line Items]    
Investment fair value percentage 16.60% 19.70%
Business Services | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 177,077  
Fair Value $ 176,405  
Investment fair value percentage 10.60%  
Capital Equipment | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 105,834  
Fair Value $ 105,845  
Investment fair value percentage 6.40%  
Chemicals, Plastics & Rubber | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 28,790  
Fair Value $ 28,912  
Investment fair value percentage 1.70%  
Construction & Building | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 91,558  
Fair Value $ 91,241  
Investment fair value percentage 5.50%  
Consumer goods: Durable | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 31,398  
Fair Value $ 31,391  
Investment fair value percentage 1.90%  
Consumer goods: Non-durable | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 27,749  
Fair Value $ 27,792  
Investment fair value percentage 1.70%  
Consumer Services | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 125,242  
Fair Value $ 125,148  
Investment fair value percentage 7.50%  
Containers, Packaging & Glass | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 44,160  
Fair Value $ 44,139  
Investment fair value percentage 2.70%  
Diversified Financial Services | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 212,220  
Fair Value $ 210,609  
Investment fair value percentage 12.70%  
Energy: Electricity | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 15,266  
Fair Value $ 15,222  
Investment fair value percentage 0.90%  
Energy: Oil & Gas | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 29,187  
Fair Value $ 29,185  
Investment fair value percentage 1.80%  
Environmental Industries | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 24,057  
Fair Value $ 24,068  
Investment fair value percentage 1.50%  
Forest Products & Paper | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 2,457  
Fair Value $ 2,387  
Investment fair value percentage 0.10%  
Healthcare & Pharmaceuticals | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 102,635  
Fair Value $ 102,638  
Investment fair value percentage 6.20%  
High Tech Industries | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 121,605  
Fair Value $ 119,392  
Investment fair value percentage 7.20%  
Leisure Products & Services | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 80,886  
Fair Value $ 80,764  
Investment fair value percentage 4.90%  
Media: Advertising, Printing & Publishing | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 12,856  
Fair Value $ 12,930  
Investment fair value percentage 0.80%  
Media: Broadcasting & Subscription | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 21,064  
Fair Value $ 21,102  
Investment fair value percentage 1.30%  
Media: Diversified & Production | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 28,004  
Fair Value $ 28,023  
Investment fair value percentage 1.70%  
Metals & Mining | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 3,976  
Fair Value $ 4,000  
Investment fair value percentage 0.20%  
Retail | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 25,826  
Fair Value $ 25,717  
Investment fair value percentage 1.50%  
Telecommunications | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 20,090  
Fair Value $ 20,180  
Investment fair value percentage 1.20%  
Transportation: Cargo | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 7,392  
Fair Value $ 7,504  
Investment fair value percentage 0.50%  
Transportation: Consumer | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 27,334  
Fair Value $ 27,244  
Investment fair value percentage 1.60%  
Utilities: Electric | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 10,158  
Fair Value $ 10,209  
Investment fair value percentage 0.60%  
Utilities: Oil & Gas | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 4,909  
Fair Value $ 4,949  
Investment fair value percentage 0.30%  
Wholesale | SCP    
Schedule of Investments [Line Items]    
Amortized Cost $ 108,800  
Fair Value $ 108,643  
Investment fair value percentage 6.50%  
[1] As of June 30, 2026, the estimated cost basis of investments for U.S. federal tax purposes was $8,638,659, resulting in estimated gross unrealized gains and losses of $192,501 and $244,500, respectively.
[2] The amortized cost represents the original cost adjusted for the amortization of discounts and premiums, as applicable, on debt investments using the effective interest method.
[3] Unless otherwise indicated, the Company’s portfolio companies are domiciled in the United States. Certain portfolio company investments are subject to contractual restrictions on sales.
[4] In accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 820, Fair Value
Measurements (“ASC Topic 820”), unless otherwise indicated, the fair values of all investments were determined using
significant unobservable inputs and are considered Level 3 investments. See Note 6 for further information related to
investments at fair value.
[5] Value rounds to less than 0.1%.
[6] Value rounds to less than 0.1%