Interest Income and Interest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest income
Loans	$ 52,736	$ 41,537	$ 43,758
Taxable securities	10,372	6,460	7,843
Non-taxable securities	975	1,063	1,184
Total investment securities	11,347	7,523	9,027
Trading assets - debt instruments	9,053	6,825	7,832
Federal funds sold and securities purchased under resale agreements	4,632	958	2,436
Securities borrowed	2,237	(385)	(302)
Deposits with banks	9,039	512	749
All other interest-earning assets	3,763	894	1,023
Total interest income	92,807	57,864	64,523
Interest expense
Interest bearing deposits	10,082	531	2,357
Federal funds purchased and securities loaned or sold under repurchase agreements	3,721	274	1,058
Short-term borrowings	747	126	372
Trading liabilities – debt and all other interest-bearing liabilities	3,246	257	195
Long-term debt	8,075	4,282	5,764
Beneficial interest issued by consolidated VIEs	226	83	214
Total interest expense	26,097	5,553	9,960
Net interest income	66,710	52,311	54,563
Provision for credit losses	6,389	(9,256)	17,480
Net interest income after provision for credit losses	$ 60,321	$ 61,567	$ 37,083