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Borrowed Funds - Subordinated Notes (Details) - Subordinated notes - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2024
Nov. 06, 2023
Subordinated notes maturing in 2028    
Debt Instrument    
Interest Rate at June 30, 2024 8.378% 5.90%
Original Issue Amount $ 300  
Variable rate on spread 3.0416%  
Subordinated notes maturing in 2030    
Debt Instrument    
Interest Rate at June 30, 2024 4.125%  
Original Issue Amount $ 150