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Fair Value of Assets and Liabilities - Schedule Of Unobservable Inputs Utilized In Determining The Fair Value Of Level 3 Recurring And Non-Recurring Measurements (Details) $ in Millions | Sep. 30, 2022 USD ($) month | Dec. 31, 2021 USD ($) month
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale at fair value | $ 8,718 | $ 8,707
Loans held-for-sale | 89 | 258
Derivative Liabilities, fair value | 1,027 | 103
Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liabilities, fair value | 20 | 23
Loans and leases, fair value | 122 | 84
OREO, fair value | 3 | 3
Level 3 | Other Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other assets | 40 | 30
Level 3 | SBAs | Loans Held For Sale - SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale |  | 1
Level 3 | Residential Real Estate | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale | 20 | 29
Level 3 | Interest-only strips | Trading Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Securities available for sale at fair value | $ 23 | $ 38
Constant prepayment rate | Level 3 | SBAs | Minimum | Discounted cash flow | Loans Held For Sale - SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input |  | 8
Constant prepayment rate | Level 3 | SBAs | Maximum | Discounted cash flow | Loans Held For Sale - SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input |  | 12
Constant prepayment rate | Level 3 | SBAs | Weighted Average | Discounted cash flow | Loans Held For Sale - SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input |  | 0.10
Constant prepayment rate | Level 3 | Interest-only strips | Minimum | Discounted cash flow | Trading Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available-for-sale, measurement input | 0.12 | 0.11
Constant prepayment rate | Level 3 | Interest-only strips | Maximum | Discounted cash flow | Trading Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available-for-sale, measurement input | 0.13 | 0.12
Constant prepayment rate | Level 3 | Interest-only strips | Weighted Average | Discounted cash flow | Trading Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available-for-sale, measurement input | 0.12 | 0.11
Bond equivalent yield | Level 3 | SBAs | Minimum | Discounted cash flow | Loans Held For Sale - SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input |  | 11
Bond equivalent yield | Level 3 | SBAs | Weighted Average | Discounted cash flow | Loans Held For Sale - SBA |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input |  | 0.11
Bond equivalent yield | Level 3 | Interest-only strips | Minimum | Discounted cash flow | Trading Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available-for-sale, measurement input | 0.15 | 0.11
Bond equivalent yield | Level 3 | Interest-only strips | Maximum | Discounted cash flow | Trading Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available-for-sale, measurement input | 0.17 | 0.14
Bond equivalent yield | Level 3 | Interest-only strips | Weighted Average | Discounted cash flow | Trading Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available-for-sale, measurement input | 0.15 | 0.11
Prepayment speeds - First mortgage | Level 3 | Loans held for sale—first mortgages | Minimum | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.02 | 4
Prepayment speeds - First mortgage | Level 3 | Loans held for sale—first mortgages | Maximum | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.09 | 12
Prepayment speeds - First mortgage | Level 3 | Loans held for sale—first mortgages | Weighted Average | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.03 | 0.05
Foreclosure losses | Level 3 | Residential Real Estate | Minimum | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.63 | 54
Foreclosure losses | Level 3 | Residential Real Estate | Maximum | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.77 | 66
Foreclosure losses | Level 3 | Residential Real Estate | Weighted Average | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.65 | 0.65
Loss severity trends - First mortgage | Level 3 | Loans held for sale—first mortgages | Minimum | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0 | 1
Loss severity trends - First mortgage | Level 3 | Loans held for sale—first mortgages | Maximum | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.10 | 14
Loss severity trends - First mortgage | Level 3 | Loans held for sale—first mortgages | Weighted Average | Discounted cash flow | Loans Held For Sale, Residential Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 0.06 | 0.08
Visa covered litigation resolution amount | Level 3 | Minimum | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input, value | $ 5,400 | $ 5,800
Visa covered litigation resolution amount | Level 3 | Maximum | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input, value | 6,200 | 6,200
Visa covered litigation resolution amount | Level 3 | Weighted Average | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input, value | $ 5,900 | $ 6,000
Probability of resolution scenarios | Level 3 | Minimum | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input | 0.10 | 15
Probability of resolution scenarios | Level 3 | Maximum | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input | 0.30 | 35
Probability of resolution scenarios | Level 3 | Weighted Average | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input | 0.24 | 0.24
Time until resolution | Level 3 | Minimum | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input | month | 3 | 12
Time until resolution | Level 3 | Maximum | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input | month | 33 | 36
Time until resolution | Level 3 | Weighted Average | Discounted cash flow |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative liabilities, measurement input | month | 22 | 25
Marketability adjustments for specific properties | Level 3 | Minimum | Appraisals from comparable properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans and leases, measurement input | 0 | 0
Marketability adjustments for specific properties | Level 3 | Minimum | Appraisals from comparable properties | Other Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other assets, measurement input | 0 | 0
Marketability adjustments for specific properties | Level 3 | Maximum | Appraisals from comparable properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans and leases, measurement input | 0.10 | 10
Marketability adjustments for specific properties | Level 3 | Maximum | Appraisals from comparable properties | Other Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other assets, measurement input | 0.25 | 25
Borrowing base certificates adjustment | Level 3 | Minimum | Other collateral valuations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans and leases, measurement input | 0.20 | 20
Borrowing base certificates adjustment | Level 3 | Maximum | Other collateral valuations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans and leases, measurement input | 0.50 | 50
Financial Statements/Auction values adjustment | Level 3 | Minimum | Other collateral valuations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans and leases, measurement input | 0 | 0
Financial Statements/Auction values adjustment | Level 3 | Maximum | Other collateral valuations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans and leases, measurement input | 0.25 | 25
Adjustment for value changes since appraisal | Level 3 | Minimum | Appraisals from comparable properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
OREO measurement input | 0 | 0
Adjustment for value changes since appraisal | Level 3 | Maximum | Appraisals from comparable properties |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
OREO measurement input | 0.10 | 10
Adjustments to current sales yields for specific properties | Level 3 | Minimum | Discounted cash flow | Other Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other assets, measurement input | 0 | 0
Adjustments to current sales yields for specific properties | Level 3 | Maximum | Discounted cash flow | Other Assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other assets, measurement input | 0.15 | 15

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