CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Securities borrowed or purchased under agreements to resell, at fair value	$ 344,264	$ 345,700
Trading account assets, pledged to creditors	228,669	197,156
Available-for-sale securities, pledged to creditors	1,846	11,868
Held-to-maturity debt securities, fair value	231,374	235,001
Held-to-maturity debt securities, pledged to creditors	33	71
Equity securities, at fair value	802	766
Loans, net of unearned income, at fair value	674,578	689,362
Mortgage servicing rights, at fair value	702	691
Other assets, at fair value	97,701	95,963
Securities loaned or sold under agreements to repurchase, at fair value	299,387	278,107
Brokerage payables, at fair value	73,013	63,539
Short-term borrowings, at fair value	31,910	37,457
Long-term debt, at fair value	$ 285,495	$ 286,619
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, authorized shares (in shares)	30,000,000	30,000,000
Preferred stock, issued shares, at aggregate liquidation value (in shares)	704,000	704,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares (in shares)	6,000,000,000	6,000,000,000
Common stock, issued shares (in shares)	3,099,718,305	3,099,691,704
Treasury stock (in shares)	1,192,278,692	1,196,577,865
Recurring
Deposits, at fair value	$ 2,905	$ 2,440
Consumer loans
Loans, net of unearned income, at fair value	381,759	389,197
Corporate loans
Loans, net of unearned income, at fair value	292,819	300,165
Fair value
Securities borrowed or purchased under agreements to resell, at fair value	193,546	206,059
Other assets, at fair value	12,731	12,290
Securities loaned or sold under agreements to repurchase, at fair value	73,781	62,485
Brokerage payables, at fair value	3,997	4,321
Short-term borrowings, at fair value	8,131	6,545
Long-term debt, at fair value	115,317	116,338
Fair value | Consumer loans
Loans, net of unearned income, at fair value	303	313
Fair value | Corporate loans
Loans, net of unearned income, at fair value	$ 8,551	$ 7,281