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Fair Value Measurements - Fair Value Measurement Inputs and Valuation Techniques (Details) - IRLCs - Not Designated as Hedging Instrument
Sep. 30, 2023
Dec. 31, 2022
Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value rates, IRLCs 0.45 0.47
Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value rates, IRLCs 1 1
Weighted-average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair value rates, IRLCs 0.88 0.87