Financial Derivatives (Hedged Items- Fair Value Hedges) (Details) - Designated as Hedging Instrument - Fair Value Hedging - USD ($) $ in Millions |
Dec. 31, 2022 |
Dec. 31, 2021 |
---|---|---|
Investment Securities | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Carrying Value of the Hedged Items | $ 2,376 | $ 2,655 |
Cumulative fair value hedge adjustment included in the carrying value of hedged items | (121) | 23 |
Borrowed Funds | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Carrying Value of the Hedged Items | 21,781 | 24,259 |
Cumulative fair value hedge adjustment included in the carrying value of hedged items | (1,283) | 663 |
Borrowed Funds Discontinued Relationships | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Fair value hedge adjustments primarily related to discontinued borrowed funds hedge relationships, cumulative increase (decrease) | $ (100) | $ (100) |