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Derivative And Credit-Related Financial Instruments (Schedule Of Derivative Instruments) (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | $ 70,187 | $ 69,729
Fair Value of Gross Derivative Assets |  | 775 | 666
Fair Value of Gross Derivative Liabilities |  | 847 | 794
Derivative asset, Netting adjustment - Offsetting derivative assets |  | (357) | (330)
Derivative liabilities, Netting adjustment - Offsetting derivative assets |  | (357) | (330)
Derivative assets, Netting adjustment - Cash collateral received |  | (54) | (80)
Derivative liabilities, Netting adjustment, Cash collateral posted |  | (17) | 0
Net derivative assets included in the Consolidated Balance Sheets | [2] | 364 | 256
Net derivative liabilities included in the Consolidated Balance Sheets | [2] | 473 | 464
Derivative asset, securities pledged as collateral |  | (66) | (143)
Derivative liability, securities pledged as collateral |  | (124) | (2)
Net derivative assets after deducting amounts not offset in the Consolidated Balance Sheets |  | 298 | 113
Net derivative liabilities after deducting amounts not offset in the Consolidated Balance Sheets |  | 349 | 462
Credit valuation adjustments for counterparty credit risk |  | 4 | 1
Risk management purposes |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 29,694 | 30,603
Fair Value of Gross Derivative Assets |  | 1 | 3
Fair Value of Gross Derivative Liabilities |  | 2 | 3
Risk management purposes | Derivatives designated as hedging instruments | Fair value swaps - receive fixed/pay floating | Swaps |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 5,800 | 6,800
Fair Value of Gross Derivative Assets |  | 1 | 0
Fair Value of Gross Derivative Liabilities |  | 0 | 0
Risk management purposes | Derivatives designated as hedging instruments | Cash flow swaps - receive fixed/pay floating | Swaps |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 23,350 | 23,350
Fair Value of Gross Derivative Assets |  | 0 | 0
Fair Value of Gross Derivative Liabilities |  | 0 | 3
Risk management purposes | Derivatives used as economic hedges | Spot, forwards and swaps |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 544 | 453
Fair Value of Gross Derivative Assets |  | 0 | 3
Fair Value of Gross Derivative Liabilities |  | 2 | 0
Customer-initiated and other activities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 40,493 | 39,126
Fair Value of Gross Derivative Assets |  | 774 | 663
Fair Value of Gross Derivative Liabilities |  | 845 | 791
Customer-initiated and other activities | Interest rate contracts |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 22,906 | 22,751
Fair Value of Gross Derivative Assets |  | 157 | 177
Fair Value of Gross Derivative Liabilities |  | 249 | 332
Customer-initiated and other activities | Caps and floors written |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 1,911 | 1,781
Fair Value of Gross Derivative Assets |  | 0 | 0
Fair Value of Gross Derivative Liabilities |  | 9 | 12
Customer-initiated and other activities | Caps and floors purchased |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 1,911 | 1,781
Fair Value of Gross Derivative Assets |  | 9 | 12
Fair Value of Gross Derivative Liabilities |  | 0 | 0
Customer-initiated and other activities | Swaps |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 19,084 | 19,189
Fair Value of Gross Derivative Assets |  | 148 | 165
Fair Value of Gross Derivative Liabilities |  | 240 | 320
Customer-initiated and other activities | Energy contracts |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 14,914 | 13,258
Fair Value of Gross Derivative Assets |  | 577 | 416
Fair Value of Gross Derivative Liabilities |  | 562 | 400
Customer-initiated and other activities | Caps and floors written |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 4,021 | 3,460
Fair Value of Gross Derivative Assets |  | 0 | 0
Fair Value of Gross Derivative Liabilities |  | 266 | 201
Customer-initiated and other activities | Caps and floors purchased |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 4,021 | 3,460
Fair Value of Gross Derivative Assets |  | 267 | 202
Fair Value of Gross Derivative Liabilities |  | 0 | 0
Customer-initiated and other activities | Swaps |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 6,872 | 6,338
Fair Value of Gross Derivative Assets |  | 310 | 214
Fair Value of Gross Derivative Liabilities |  | 296 | 199
Customer-initiated and other activities | Spot, forwards, options and swaps |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional/Contract Amount | [1] | 2,673 | 3,117
Fair Value of Gross Derivative Assets |  | 40 | 70
Fair Value of Gross Derivative Liabilities |  | $ 34 | $ 59
[1] | Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the Consolidated Balance Sheets.
[2] | Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets included credit valuation adjustments for counterparty credit risk of $4 million and $1 million at March 31, 2025 and December 31, 2024.

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