CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Securities borrowed or purchased under agreements to resell, at fair value	$ 335,059	$ 365,401
Trading account assets, pledged to creditors	179,948	133,535
Available-for-sale securities, pledged to creditors	14,720	10,933
Held-to-maturity debt securities, fair value	231,002	243,648
Held-to-maturity debt securities, pledged to creditors	8	0
Equity securities, at fair value	738	895
Loans, net of unearned income, at fair value	666,348	657,221
Mortgage servicing rights, at fair value	729	665
Other assets, at fair value	96,824	103,743
Securities loaned or sold under agreements to repurchase, at fair value	256,770	202,444
Brokerage payables, at fair value	75,076	69,218
Short-term borrowings, at fair value	43,166	47,096
Long-term debt, at fair value	$ 275,760	$ 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)	779,800	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)	3,099,691,671	3,099,669,424
Treasury stock (in shares)	1,185,809,738	1,162,682,999
Recurring
Deposits, at fair value	$ 2,722	$ 1,875
Consumer loans
Loans, net of unearned income, at fair value	377,714	368,067
Corporate loans
Loans, net of unearned income, at fair value	288,634	289,154
Fair value
Securities borrowed or purchased under agreements to resell, at fair value	206,151	239,527
Other assets, at fair value	13,937	10,658
Securities loaned or sold under agreements to repurchase, at fair value	60,662	70,886
Brokerage payables, at fair value	7,211	4,439
Short-term borrowings, at fair value	6,470	6,222
Long-term debt, at fair value	112,629	105,995
Fair value | Consumer loans
Loans, net of unearned income, at fair value	222	237
Fair value | Corporate loans
Loans, net of unearned income, at fair value	$ 7,189	$ 5,123