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Derivative Financial Instruments and Hedging Activities Derivative Financial Instruments and Hedging Activities (Schedule of Fair Value Hedging Basis Adjustments) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Financial Asset, Closed Portfolio, Portfolio Layer Method, Amortized Cost | $ 1,300 |
Hedged Asset, Fair Value Hedge, Last-of-Layer, Amount | 1,000 |
Designated as Hedging Instrument [Member] | Debt Available-for-Sale Securities [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Hedged Asset, Fair Value Hedge | 1,653 | $ 23
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) | 5 | 0
Designated as Hedging Instrument [Member] | Long-term Debt [Member] |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Hedged Liability, Fair Value Hedge | (1,286) | (1,239)
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) | (112) | (158)
Designated as Hedging Instrument [Member] | Deposits |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Hedged Liability, Fair Value Hedge | (252) | 0
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) | $ 0 | $ 0

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