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Derivative Financial Instruments - Schedule of Notional Amounts of Derivative Contracts Outstanding (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Derivative [Line Items]    
Notional amount $ 13,530,759 $ 13,737,388
IRLCs    
Derivative [Line Items]    
Notional amount 169,759 126,388
Derivative contracts to manage future loan sale execution risk | Interest rate swaps    
Derivative [Line Items]    
Notional amount 12,230,700 12,491,000
Derivative contracts to manage future loan sale execution risk | Interest rate caps    
Derivative [Line Items]    
Notional amount 405,000 405,000
Derivative contracts to manage future loan sale execution risk | Home loan pipeline hedges    
Derivative [Line Items]    
Notional amount 241,000 226,000
Derivative contracts not designed to manage future loan sale execution risk | Interest rate swaps    
Derivative [Line Items]    
Notional amount 79,300 84,000
Derivative contracts not designed to manage future loan sale execution risk | Interest rate caps    
Derivative [Line Items]    
Notional amount $ 405,000 $ 405,000