v3.26.1
Investments - SLP Balance Sheet (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Investment Company, Nonconsolidated Subsidiary [Line Items]            
Investments at fair value $ 2,363,576   $ 2,508,441      
Cash and cash equivalents 97,187   23,092      
Restricted cash and cash equivalents 18,467   32,667      
Deferred financing costs 3,023   3,543      
Interest receivable on investments 33,882   38,023      
Receivable for sales and paydowns of investments 70,645   28,856      
Total Assets 2,620,082   2,662,585      
Debt [1] 1,501,129   1,470,796      
Interest payable on debt 8,597   12,376      
Payable for investments purchased 1,286   2,110      
Distributions payable to members 0   9,730      
Accounts payable and accrued expenses 13,186   12,910      
Total liabilities 1,539,717   1,545,175      
Members' equity 1,080,365   1,117,410 $ 1,139,035    
Total Members' equity 1,080,365 $ 1,093,555 1,117,410 $ 1,139,035 $ 1,144,504 $ 1,139,672
Total Liabilities and Total Net Assets 2,620,082   2,662,585      
Investments, amortized cost 2,375,245   2,502,667      
Unamortized debt issuance costs 15,936   10,110      
Bain Capital Senior Loan Program, LLC            
Investment Company, Nonconsolidated Subsidiary [Line Items]            
Investments at fair value 1,587,833   1,536,252      
Cash and cash equivalents 12,897   1,964      
Restricted cash and cash equivalents 80,679   125,753      
Prepaid expenses 3,539   3,773      
Interest receivable on investments 13,213   12,658      
Receivable for sales and paydowns of investments 17,990   3,976      
Total Assets 1,716,151   1,684,376      
Debt 1,325,093   1,295,228      
Subordinated notes payable to members 324,082   315,859      
Interest payable on debt 16,502   21,951      
Interest payable on subordinated notes payable to members 9,049   8,690      
Payable for investments purchased 27,214   25,455      
Distributions payable to members 7,396   6,785      
Accounts payable and accrued expenses 4,980   2,330      
Total liabilities 1,714,316   1,676,298      
Members' equity 1,835   8,078      
Total Members' equity 1,835   8,078      
Total Liabilities and Total Net Assets 1,716,151   1,684,376      
Investments, amortized cost 1,619,219   1,556,187      
Unamortized debt issuance costs $ 12,032   $ 10,022      
[1] Carrying value represents aggregate principal amount outstanding less unamortized debt issuance costs.