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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, 2024 | Dec. 31, 2023
--- | --- | ---
Cash and due from banks |  | $ 850 | $ 1,443
Interest-bearing deposits with banks |  | 5,954 | 8,059
Time deposits |  | 4,534 |
Total deposits |  | 63,811 | 66,762
Short-term borrowings |  | 0 | 3,565
Medium- and long-term debt |  | 6,673 | 6,206
Carrying Amount |  |  |
Cash and due from banks |  | 850 | 1,443
Interest-bearing deposits with banks |  | 5,954 | 8,059
Other short-term investments |  | 21 | 24
Total loans |  | 49,849 | 51,425
Demand deposits |  | 59,277 | 58,476
Time deposits |  | 4,534 | 8,286
Total deposits |  | 63,811 | 66,762
Short-term borrowings |  |  | 3,565
Medium- and long-term debt |  | 6,673 | 6,206
Credit-related financial instruments |  | (64) | (72)
Estimated Fair Value |  |  |
Cash and due from banks |  | 850 | 1,443
Interest-bearing deposits with banks |  | 5,954 | 8,059
Other short-term investments |  | 21 | 24
Total loans | [1] | 49,436 | 50,633
Demand deposits |  | 59,277 | 58,476
Time deposits |  | 4,555 | 8,391
Total deposits |  | 63,832 | 66,867
Short-term borrowings |  |  | 3,565
Medium- and long-term debt |  | 6,780 | 6,207
Credit-related financial instruments |  | (64) | (72)
Level 1 | Estimated Fair Value |  |  |
Cash and due from banks |  | 850 | 1,443
Interest-bearing deposits with banks |  | 5,954 | 8,059
Other short-term investments |  | 21 | 24
Total loans |  | 0 | 0
Demand deposits |  | 0 | 0
Time deposits |  | 0 | 0
Total deposits |  | 0 | 0
Short-term borrowings |  |  | 3,565
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 |  | 0 | 0
Demand deposits |  | 59,277 | 58,476
Time deposits |  | 4,555 | 8,391
Total deposits |  | 63,832 | 66,867
Short-term borrowings |  |  | 0
Medium- and long-term debt |  | 6,780 | 6,207
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 |  | 49,436 | 50,633
Demand deposits |  | 0 | 0
Time deposits |  | 0 | 0
Total deposits |  | 0 | 0
Short-term borrowings |  |  | 0
Medium- and long-term debt |  | 0 | 0
Credit-related financial instruments |  | (64) | (72)
Nonrecurring | Level 3 |  |  |
Total loans |  | $ 158 | $ 44
[1] | Included $158 million and $44 million of loans recorded at fair value on a nonrecurring basis at December 31, 2024 and 2023, 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/1943274/2147478546/942-210-S99-1 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 + Details
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