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Subsequent Events (Details)
$ in Millions
3 Months Ended
Dec. 31, 2024
USD ($)
Oct. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Federal Reserve Bank term funding        
Subsequent Event [Line Items]        
Fed funds purchased     $ 1,000.0 $ 1,000.0
Discontinued Operations, Disposed of by Sale | Forecast        
Subsequent Event [Line Items]        
Customary holdback percentage 0.05      
Discontinued Operations, Disposed of by Sale | Subsequent Event        
Subsequent Event [Line Items]        
Total cash consideration   $ 1,300.0    
Discontinued Operations, Disposed of by Sale | Subsequent Event | Forecast        
Subsequent Event [Line Items]        
Net gain on sale of assets and liabilities $ 175.0      
Impairment of capitalized assets and severance costs $ 75.0