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Fair Value Measurements (Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value In Their Entirety On A Recurring Basis) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Cash and due from banks |  | $ 1,443 | $ 1,758
Interest-bearing deposits with banks |  | 8,059 | 4,524
Total loans, net of allowance for loan losses |  | 51,425 | 52,792
Demand deposits (noninterest-bearing) |  | 27,849 | 39,945
Time Deposits |  | 8,286 |
Total deposits |  | 66,762 | 71,397
Short-term borrowings |  | 3,565 | 3,211
Medium- and long-term debt |  | 6,206 | 3,024
Carrying Amount |  |  |
Cash and due from banks |  | 1,443 | 1,758
Interest-bearing deposits with banks |  | 8,059 | 4,524
Other short-term investments |  | 24 | 19
Total loans, net of allowance for loan losses |  | 51,425 | 52,792
Demand deposits (noninterest-bearing) |  | 58,476 | 69,460
Time Deposits |  | 8,286 | 1,937
Total deposits |  | 66,762 | 71,397
Short-term borrowings |  | 3,565 | 3,211
Medium- and long-term debt |  | 6,206 | 3,024
Credit-related financial instruments |  | (72) | (79)
Estimated Fair Value |  |  |
Cash and due from banks |  | 1,443 | 1,758
Interest-bearing deposits with banks |  | 8,059 | 4,524
Other short-term investments |  | 24 | 19
Total loans, net of allowance for loan losses | [1] | 50,633 | 50,964
Demand deposits (noninterest-bearing) |  | 58,476 | 69,460
Time Deposits |  | 8,391 | 1,894
Total deposits |  | 66,867 | 71,354
Short-term borrowings |  | 3,565 | 3,211
Medium- and long-term debt |  | 6,207 | 3,071
Credit-related financial instruments |  | (72) | (79)
Level 1 | Estimated Fair Value |  |  |
Cash and due from banks |  | 1,443 | 1,758
Interest-bearing deposits with banks |  | 8,059 | 4,524
Other short-term investments |  | 24 | 19
Total loans, net of allowance for loan losses |  | 0 | 0
Demand deposits (noninterest-bearing) |  | 0 | 0
Time Deposits |  | 0 | 0
Total deposits |  | 0 | 0
Short-term borrowings |  | 3,565 | 3,211
Medium- and long-term debt |  | 0 | 0
Credit-related financial instruments |  | 0 | 0
Level 2 | Estimated Fair Value |  |  |
Cash and due from banks |  | 0 | 0
Interest-bearing deposits with banks |  | 0 | 0
Other short-term investments |  | 0 | 0
Total loans, net of allowance for loan losses |  | 0 | 0
Demand deposits (noninterest-bearing) |  | 58,476 | 69,460
Time Deposits |  | 8,391 | 1,894
Total deposits |  | 66,867 | 71,354
Short-term borrowings |  | 0 | 0
Medium- and long-term debt |  | 6,207 | 3,071
Credit-related financial instruments |  | 0 | 0
Level 3 | Estimated Fair Value |  |  |
Cash and due from banks |  | 0 | 0
Interest-bearing deposits with banks |  | 0 | 0
Other short-term investments |  | 0 | 0
Total loans, net of allowance for loan losses |  | 50,633 | 50,964
Demand deposits (noninterest-bearing) |  | 0 | 0
Time Deposits |  | 0 | 0
Total deposits |  | 0 | 0
Short-term borrowings |  | 0 | 0
Medium- and long-term debt |  | 0 | 0
Credit-related financial instruments |  | $ (72) | $ (79)
[1] | Included $44 million and $66 million of loans recorded at fair value on a nonrecurring basis at December 31, 2023 and 2022, respectively.

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- Definition Value of credit-related financial instruments included in accrued expenses and other liabilities, including unused commitments to extend credit, letters of credit and financial guarantees. Includes the allowance for credit losses on lending-related commitments and the current amortized value of the guarantee liability recognized at fair value at inception of the commitment. + References No definition available. + Details
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- Definition For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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