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Other Assets - Schedule of Components of Other Assets (Parenthetical) (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Massachusetts Healthcare    
Debt Securities, Available-for-Sale [Line Items]    
Equity method interest in joint venture $ 159.7  
Real Estate Owned, Held for Investment    
Debt Securities, Available-for-Sale [Line Items]    
Other Real Estate $ 8.4 $ 4.6