Fair Value Measurements - Valuation Assumptions (Details)	Mar. 31, 2022	Dec. 31, 2021
Discount rate | In-house valuation of collateral, External pricing model | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loan measured for credit losses, measurement input (percent)	1
Discount rate | Discounted cash flow | Mortgage servicing rights | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.0800	0.0800
Discount rate | Discounted cash flow | Commercial servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.0994
Discount rate | Discounted cash flow | Commercial servicing rights | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)		0.0994
Pull through rate | In-house valuation of collateral, External pricing model | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitment, measurement input (percent)	0.9437	0.9327
Constant prepayment rate | Discounted cash flow | Mortgage servicing rights | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.0726	0.0925
Constant prepayment rate | Discounted cash flow | Mortgage servicing rights | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.1139	0.1421
Constant prepayment rate | Discounted cash flow | Commercial servicing rights | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.1230	0.1230
Constant prepayment rate | Discounted cash flow | Commercial servicing rights | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.1657	0.1657