Derivatives and Hedging Activities - Schedule of Fair Values, Volume of Activity and Gain (Loss) Information Related to Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Notional Amount	$ 144,704	$ 143,121
Derivative assets, netting adjustments	(532)	(818)
Derivative Assets, net	223	180
Derivative liabilities, netting adjustments	(466)	(473)
Derivative Liabilities, net	1,210	1,286
Amount of offset in excess of collateral posted	176	161
Amount of offset in excess of securities collateral posted	296	269
Amount of offset in excess of cash collateral held	9	16
Amount of offset in excess of securities collateral held	63	212
Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	91,579	98,500
Derivative Assets	758	960
Derivative Liabilities	1,667	1,765
Interest rate | Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	53,125	44,621
Derivative Assets	4	39
Derivative Liabilities	9	12
Interest rate | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	72,120	78,051
Derivative Assets	128	134
Derivative Liabilities	1,077	973
Foreign exchange | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	6,577	6,034
Derivative Assets	94	89
Derivative Liabilities	74	73
Commodity | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	10,255	11,611
Derivative Assets	531	721
Derivative Liabilities	510	698
Credit | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	81	121
Derivative Assets	0	0
Derivative Liabilities	1	1
Other | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	2,546	2,683
Derivative Assets	5	16
Derivative Liabilities	5	20
Net derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	144,704	143,121
Derivative Assets, net	230	181
Derivative Liabilities, net	1,210	1,304
Other collateral
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets, net	(7)	(1)
Derivative Liabilities, net	$ 0	$ (18)