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Derivative Financial Instruments And Hedging Activities (Schedule Of Gains (Losses) Recognized Related To Derivatives Not Designated As Hedging Instruments) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | $ 13 | $ 20 | $ 41 | $ 12
Capital markets income [Member] | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 25 | 28 | 57 | 11
Capital markets income [Member] | Interest rate swaps | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 6 | 4 | 15 | (24)
Capital markets income [Member] | Interest rate options | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 14 | 12 | 23 | 21
Capital markets income [Member] | Interest rate futures and forward commitments | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 6 | 4 | 14 | 8
Capital markets income [Member] | Other Contracts [Member] | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (1) | 8 | 5 | 6
Mortgage Income [Member] | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (12) | (8) | (16) | 1
Mortgage Income [Member] | Interest rate swaps | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (8) | (7) | (23) | 0
Mortgage Income [Member] | Interest rate options | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (2) | (2) | (1) | 1
Mortgage Income [Member] | Interest rate futures and forward commitments | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | $ (2) | $ 1 | $ 8 | $ 0

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC + Details
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