Annual report pursuant to Section 13 and 15(d)

Investments - Schedule of Unamortized Capitalized Fee Income (Details)

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Investments - Schedule of Unamortized Capitalized Fee Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Unamortized Fee Income $ 54.0 $ 42.9
Included in Cost [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Unamortized Fee Income 43.1 36.5
Deferred Fees [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total Unamortized Fee Income $ 10.9 $ 6.4