Interest Income and Interest Expense - Sources of Interest Income and Interest Expense (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest income and expense
Deposits with banks	$ 1,107	$ (13)	$ 1,392	$ (9)
Collateralized agreements	1,542	(220)	1,712	(651)
Trading assets	1,334	1,230	3,551	3,553
Investments	578	358	1,433	1,243
Loans	2,487	1,363	5,937	3,878
Other interest	1,502	399	2,588	1,096
Total interest income	8,550	3,117	16,613	9,110
Deposits	1,811	319	2,975	978
Collateralized financings	990	33	1,308	41
Trading liabilities	513	495	1,427	1,240
Short-term borrowings	152	115	333	433
Long-term borrowings	1,503	843	3,433	2,477
Other interest	1,538	(252)	1,533	(734)
Total interest expense	6,507	1,553	11,009	4,435
Net interest income	$ 2,043	$ 1,564	$ 5,604	$ 4,675