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Derivatives and Hedging Activities - Pre-Tax Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | $ 56 | $ 100 | $ 67
Interest rate |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 41 | 63 | 32
Foreign exchange |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 50 | 52 | 47
Commodity |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 22 | 23 | 14
Credit |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | (50) | (40) | (32)
Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | (7) | 2 | 6
Corporate services income |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 115 | 131 | 95
Corporate services income | Interest rate |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 41 | 57 | 30
Corporate services income | Foreign exchange |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 50 | 52 | 47
Corporate services income | Commodity |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 22 | 23 | 14
Corporate services income | Credit |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 2 | (1) | 4
Corporate services income | Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 0 | 0
Consumer mortgage income |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | (1) | 4 | 13
Consumer mortgage income | Interest rate |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 0 | 0
Consumer mortgage income | Foreign exchange |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 0 | 0
Consumer mortgage income | Commodity |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 0 | 0
Consumer mortgage income | Credit |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 0 | 0
Consumer mortgage income | Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | (1) | 4 | 13
Other income |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | (58) | (35) | (41)
Other income | Interest rate |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 6 | 2
Other income | Foreign exchange |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 0 | 0
Other income | Commodity |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | 0 | 0 | 0
Other income | Credit |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | (52) | (39) | (36)
Other income | Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Total net gains (losses) | $ (6) | $ (2) | $ (7)

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