Derivative Instruments - Notional Amount of Derivative Contracts (Details) - USD ($) $ in Billions	Jun. 30, 2025	Dec. 31, 2024
Notional amount of derivative contracts outstanding
Derivative notional amounts	$ 60,464	$ 47,723
Interest rate contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	37,064	29,660
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	25,430	20,437
Futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	4,449	3,067
Options \| Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,659	3,067
Options \| Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,526	3,089
Credit derivatives
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,526	1,191
Foreign exchange contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	17,960	13,513
Cross-currency swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	5,456	4,509
Spot, futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	9,834	7,005
Options \| Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,343	1,015
Options \| Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,327	984
Equity contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	3,237	2,758
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	972	850
Futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	262	206
Options \| Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	1,073	914
Options \| Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	930	788
Commodity contracts
Notional amount of derivative contracts outstanding
Derivative notional amounts	677	601
Swaps
Notional amount of derivative contracts outstanding
Derivative notional amounts	169	148
Spot, futures and forwards
Notional amount of derivative contracts outstanding
Derivative notional amounts	237	191
Options \| Written options
Notional amount of derivative contracts outstanding
Derivative notional amounts	139	137
Options \| Purchased options
Notional amount of derivative contracts outstanding
Derivative notional amounts	$ 132	$ 125