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Derivatives and Hedging Activities - Fair Values, Volume of Activity and Gain (Loss) Information Related to Derivative Instruments (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Derivatives, Fair Value [Line Items] |  |
Notional Amount | $ 143,121 | $ 148,690
Derivative assets, fair value | 999 | 1,781
Derivative assets, netting adjustments | (818) | (757)
Derivative assets, fair value | 180 | 1,024
Derivative liabilities, fair value | 1,777 | 2,750
Derivative liabilities, netting adjustments | (473) | (1,262)
Derivative liabilities, fair value | 1,286 | 1,483
Amount of offset in excess of collateral posted | 161 |
Amount of offset in excess of securities collateral posted | 269 |
Amount of offset in excess of cash collateral held | 16 |
Amount of offset in excess of securities collateral held | 212 |
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 98,500 | 107,490
Derivative assets, fair value | 960 | 1,667
Derivative liabilities, fair value | 1,765 | 2,747
Interest rate | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 44,621 | 41,200
Derivative assets, fair value | 39 | 114
Derivative liabilities, fair value | 12 | 3
Interest rate | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 78,051 | 80,772
Derivative assets, fair value | 134 | 189
Derivative liabilities, fair value | 973 | 1,304
Foreign exchange | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 6,034 | 9,507
Derivative assets, fair value | 89 | 136
Derivative liabilities, fair value | 73 | 131
Commodity | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 11,611 | 16,176
Derivative assets, fair value | 721 | 1,328
Derivative liabilities, fair value | 698 | 1,304
Credit | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 121 | 95
Derivative assets, fair value | 0 | 1
Derivative liabilities, fair value | 1 | 3
Other | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 2,683 | 940
Derivative assets, fair value | 16 | 13
Derivative liabilities, fair value | 20 | 5
Net derivatives in the balance sheet |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 143,121 | 148,690
Derivative assets, fair value | 181 | 1,024
Derivative liabilities, fair value | 1,304 | 1,488
Other collateral |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | (1) | 0
Derivative liabilities, fair value | $ (18) | $ (5)

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