Financial Derivatives (Impact of Fair Value Hedge Accounting on the Carrying Value of Hedged Items) (Details) - Fair value hedges - Designated as Hedging Instruments under GAAP - USD ($) $ in Millions |
Mar. 31, 2023 |
Dec. 31, 2022 |
---|---|---|
Investment Securities | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Carrying Value of the Hedged Items | $ 2,265 | $ 2,376 |
Cumulative Fair Value Hedge Adjustment included in the Carrying Value of Hedged Items | (75) | (121) |
Borrowed Funds | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Carrying Value of the Hedged Items | 24,070 | 21,781 |
Cumulative Fair Value Hedge Adjustment included in the Carrying Value of Hedged Items | (985) | (1,283) |
Borrowed Funds Discontinued Relationships | ||
Derivative Instruments, Gain (Loss) [Line Items] | ||
Cumulative fair value hedge adjustment included in carrying value of hedged items | $ (100) | $ (100) |