Annual report pursuant to Section 13 and 15(d)

Investments - Schedule of Unamortized Capitalized Fee Income (Details)

v3.24.0.1
Investments - Schedule of Unamortized Capitalized Fee Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Unamortized Fee Income $ 42.3 $ 54.0
Offset against debt investment cost    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Unamortized Fee Income 32.9 43.1
Deferred obligation contingent on funding or other milestone    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Unamortized Fee Income $ 9.4 $ 10.9