Derivative Instruments - Notional Amount of Derivative Contracts (Details) - USD ($) $ in Billions	Mar. 31, 2022	Dec. 31, 2021
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	$ 60,611	$ 49,735
Interest rate contracts
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	41,777	32,801
Swaps
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	31,216	24,075
Futures and forwards
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	3,906	2,520
Options | Written options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	3,257	3,018
Options | Purchased options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	3,398	3,188
Credit derivatives
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	1,504	1,053
Foreign exchange contracts
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	14,437	13,259
Cross-currency swaps
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	4,124	4,112
Spot, futures and forwards
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	8,649	7,679
Options | Written options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	841	741
Options | Purchased options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	823	727
Equity contracts
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	2,167	2,003
Swaps
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	656	612
Futures and forwards
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	149	139
Options | Written options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	705	654
Options | Purchased options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	657	598
Commodity contracts
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	726	619
Swaps
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	221	185
Spot, futures and forwards
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	260	188
Options | Written options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	137	135
Options | Purchased options
Notional amount of derivative contracts outstanding [Abstract]
Derivative notional amounts	$ 108	$ 111