Derivatives and Hedging Activities - Schedule of Fair Values, Volume of Activity and Gain (Loss) Information Related to Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Notional amount	$ 168,534	$ 148,690
Derivative assets, netting adjustments	(800)	(757)
Derivative Assets, net	420	1,024
Derivative liabilities, netting adjustments	(846)	(1,262)
Derivative Liabilities, net	1,709	1,483
Amount of offset in excess of collateral posted	168
Amount of offset in excess of securities collateral posted	323
Amount of offset in excess of cash collateral held	34
Amount of offset in excess of securities collateral held	91
Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount	114,572	107,490
Derivative Assets	1,188	1,667
Derivative Liabilities	2,553	2,747
Interest rate | Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount	53,962	41,200
Derivative Assets	34	114
Derivative Liabilities	7	3
Interest rate | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount	90,689	80,772
Derivative Assets	156	189
Derivative Liabilities	1,563	1,304
Foreign exchange | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount	6,941	9,507
Derivative Assets	127	136
Derivative Liabilities	109	131
Commodity | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount	14,749	16,176
Derivative Assets	891	1,328
Derivative Liabilities	870	1,304
Credit | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount	159	95
Derivative Assets	0	1
Derivative Liabilities	3	3
Other | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount	2,034	940
Derivative Assets	14	13
Derivative Liabilities	8	5
Net derivatives
Derivatives, Fair Value [Line Items]
Notional amount	168,534	148,690
Derivative Assets, net	422	1,024
Derivative Liabilities, net	1,714	1,488
Other collateral
Derivatives, Fair Value [Line Items]
Notional amount	0	0
Derivative Assets, net	(2)	0
Derivative Liabilities, net	(5)	$ (5)
Short-dated swaps
Derivatives, Fair Value [Line Items]
Notional amount	$ 3,500