Financial Instruments - Fair Value Measurement Inputs and Valuation Techniques (Details)	Dec. 31, 2024	Dec. 31, 2023
IRLCs | Pull-through rate | Market pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.924	0.877
IRLCs | Pull-through rate | Market pricing | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.742	0.672
IRLCs | Pull-through rate | Market pricing | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	1.000	1.000
MSRs | Prepayment speed | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.080	0.068
MSRs | Prepayment speed | Valuation Technique, Discounted Cash Flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.060	0.060
MSRs | Prepayment speed | Valuation Technique, Discounted Cash Flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.230	0.190
MSRs | Default rates | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.002	0.002
MSRs | Default rates | Valuation Technique, Discounted Cash Flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.001	0.001
MSRs | Default rates | Valuation Technique, Discounted Cash Flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.012	0.012
MSRs | Discount rate | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.103	0.102
MSRs | Discount rate | Valuation Technique, Discounted Cash Flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.100	0.100
MSRs | Discount rate | Valuation Technique, Discounted Cash Flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative instrument, measurement input	0.180	0.170