Fair Value Measurements - Quantitative information about Level 3 measurements for fair value on a recurring basis (Details) - Recurring - Level 3	Dec. 31, 2022	Dec. 31, 2021
Pull through rate | Low | Derivative assets - mortgage
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets, measurement input	0.265	0.459
Pull through rate | High | Derivative assets - mortgage
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets, measurement input	1	1
Pull through rate | Weighted Average | Derivative assets - mortgage
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets, measurement input	0.907	0.872
Estimated loss rate | Low | Derivative assets - customer derivative positions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets, measurement input		0.334
Estimated loss rate | High | Derivative assets - customer derivative positions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets, measurement input		0.44
Estimated loss rate | Weighted Average | Derivative assets - customer derivative positions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets, measurement input		0.36
Discount rate | Low | Corporate Bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds, measurement input	0.061	0.036
Discount rate | High | Corporate Bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds, measurement input	0.064	0.038
Discount rate | Weighted Average | Corporate Bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds, measurement input	0.063	0.036