Derivative Instruments - Notional Amount of Derivative Contracts (Details) - USD ($) $ in Billions	Jun. 30, 2024	Dec. 31, 2023
Notional amount of derivative contracts outstanding
Derivative notional amounts	$ 56,660	$ 49,813
Interest rate contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	36,726	32,673
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	25,819	23,251
Futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	4,476	2,690
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,243	3,370
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,188	3,362
Credit derivatives
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,188	1,045
Foreign exchange contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	15,347	13,306
Cross-currency swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	4,616	4,721
Spot, futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	8,811	6,957
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	968	830
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	952	798
Equity contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	2,796	2,272
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	760	639
Futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	189	157
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	970	778
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	877	698
Commodity contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	603	517
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	129	115
Spot, futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	191	157
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	152	130
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	$ 131	$ 115