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Derivative Financial Instruments and Hedging Activities - Narrative (Details)
 9 Months Ended
Sep. 30, 2023
Minimum  
Derivative [Line Items]  
Coverage ratio 0.25
Loans held-for-sale, period of sale 5 days
Basis spread on variable rate 0.50%
Minimum | Forward loans IRLCs  
Derivative [Line Items]  
Loan commitment, term 5 days
Loan commitment, average term 40 days
Loan Commitment to Correspondents 5 days
Maximum  
Derivative [Line Items]  
Coverage ratio 0.30
Loans held-for-sale, period of sale 30 days
Maximum | Forward loans IRLCs  
Derivative [Line Items]  
Loan commitment, term 75 days
Loan commitment, average term 60 days
Loan Commitment to Correspondents 15 days