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Derivative Financial Instruments And Hedging Activities (Schedule Of The Effect Of Derivative Instruments On The Statements Of Operations) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Debt securities | $ 688 | $ 533 | $ 582
Loans, including fees | 4,088 | 3,452 | 3,610
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Taxable Debt Securities in Interest Income [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Related to Interest Settlements on Derivatives | 41 |  |
Gain or (Loss) Recognized in Income on Derivatives | 0 |  |
Gain or (Loss) Recognized in Income on Related Hedged Item | 0 |  |
Gain (Loss) on Fair Value Hedges Recognized in Earnings | 41 |  |
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Loans Including Fees in Interest Income [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Related to Interest Settlements on Derivatives | 0 | 0 | 0
Gain or (Loss) Recognized in Income on Derivatives | 0 | 0 | 0
Gain or (Loss) Recognized in Income on Related Hedged Item | 0 | 0 | 0
Gain (Loss) on Fair Value Hedges Recognized in Earnings | 0 | 0 | 0
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Long-term Borrowings In Interest Expense [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Related to Interest Settlements on Derivatives | (16) | 19 | 37
Gain or (Loss) Recognized in Income on Derivatives | (124) | (51) | 52
Gain or (Loss) Recognized in Income on Related Hedged Item | 124 | 51 | (51)
Gain (Loss) on Fair Value Hedges Recognized in Earnings | (16) | 19 | 38
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Taxable Debt Securities in Interest Income [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain or (Loss) Reclassified from AOCI into Income | 0 |  |
Net Income (Expense) Recognized on Cash Flow Hedges | 0 |  |
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Loans Including Fees in Interest Income [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain or (Loss) Reclassified from AOCI into Income | 140 | 426 | 260
Net Income (Expense) Recognized on Cash Flow Hedges | 140 | 426 | 260
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Long-term Borrowings In Interest Expense [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain or (Loss) Reclassified from AOCI into Income | 0 | 0 | 0
Net Income (Expense) Recognized on Cash Flow Hedges | $ 0 | $ 0 | $ 0

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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986 + Details
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- Definition The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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