Derivative Instruments - Notional Amount of Derivative Contracts (Details) - USD ($) $ in Billions	Sep. 30, 2025	Dec. 31, 2024
Notional amount of derivative contracts outstanding
Derivative notional amounts	$ 62,976	$ 47,723
Interest rate contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	38,412	29,660
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	26,085	20,437
Futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	4,692	3,067
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,919	3,067
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,716	3,089
Credit derivatives
Notional amount of derivative contracts outstanding
Derivative notional amounts	2,165	1,191
Foreign exchange contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	17,971	13,513
Cross-currency swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	5,597	4,509
Spot, futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	10,021	7,005
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,186	1,015
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,167	984
Equity contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,705	2,758
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,095	850
Futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	271	206
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,244	914
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,095	788
Commodity contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	723	601
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	172	148
Spot, futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	286	191
Options | Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	135	137
Options | Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	$ 130	$ 125