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Financial Highlights - Summary of Financial Highlights (Parenthetical) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Abstract]    
Market price per share $ 12.73 $ 19.31
Outstanding debt $ 616.0 $ 509.0
Earnings/(Loss) per common share - basic $ 0.64 $ (0.33)