CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Securities borrowed or purchased under agreements to resell, at fair value	$ 384,198	$ 365,401
Trading account assets, pledged to creditors	173,677	133,535
Available-for-sale securities, pledged to creditors	10,376	10,933
Held-to-maturity debt securities, fair value	242,851	243,648
Held-to-maturity debt securities, pledged to creditors	61	0
Equity securities, at fair value	887	895
Loans, net of unearned income, at fair value	651,995	657,221
Mortgage servicing rights, at fair value	658	665
Other assets, at fair value	103,522	103,743
Securities loaned or sold under agreements to repurchase, at fair value	257,681	202,444
Brokerage payables, at fair value	76,708	69,218
Short-term borrowings, at fair value	40,187	47,096
Long-term debt, at fair value	$ 279,684	$ 271,606
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)	809,800	759,800
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)	3,099,691,431	3,099,669,424
Treasury stock (in shares)	1,152,939,594	1,162,682,999
Recurring
Deposits, at fair value	$ 2,943	$ 1,875
Consumer
Loans, net of unearned income, at fair value	363,696	368,067
Corporate
Loans, net of unearned income, at fair value	288,299	289,154
Fair value
Securities borrowed or purchased under agreements to resell, at fair value	255,963	239,527
Other assets, at fair value	11,847	10,658
Securities loaned or sold under agreements to repurchase, at fair value	66,232	70,886
Brokerage payables, at fair value	4,883	4,439
Short-term borrowings, at fair value	6,873	6,222
Long-term debt, at fair value	115,168	105,995
Fair value | Consumer
Loans, net of unearned income, at fair value	238	237
Fair value | Corporate
Loans, net of unearned income, at fair value	$ 4,896	$ 5,123