Interest Income and Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest income
Loans	$ 17,708	$ 10,633
Taxable securities	3,967	1,979
Non-taxable securities	248	245
Total investment securities	4,215	2,224
Trading assets - debt instruments	3,646	1,767
Federal funds sold and securities purchased under resale agreements	3,131	397
Securities borrowed	1,716	(87)
Deposits with banks	4,819	238
All other interest-earning assets	1,769	324
Total interest income	37,004	15,496
Interest expense
Interest-bearing deposits	7,637	182
Federal funds purchased and securities loaned or sold under repurchase agreements	2,804	113
Short-term borrowings	421	44
Trading liabilities – debt and all other interest-bearing liabilities	1,971	191
Long-term debt	3,313	1,076
Beneficial interest issued by consolidated VIEs	147	18
Total interest expense	16,293	1,624
Net interest income	20,711	13,872
Provision for credit losses	2,275	1,463
Net interest income after provision for credit losses	$ 18,436	$ 12,409