CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Securities borrowed or purchased under agreements to resell, at fair value	$ 309,047	$ 294,712
Trading account assets, pledged to creditors	167,605	168,967
Available-for-sale securities, pledged to creditors	7,718	5,921
Held-to-maturity securities, pledged to creditors	1,225	547
Equity securities, at fair value	793	1,066
Loans, net of unearned income, at fair value	676,834	675,883
Mortgage servicing rights, at fair value	419	336
Other assets, at fair value	116,089	110,683
Interest-bearing deposits in U.S. offices, at fair value	485,589	503,213
Interest-bearing deposits in offices outside the U.S., at fair value	573,596	549,973
Securities loaned or sold under agreements to repurchase, at fair value	221,817	199,525
Short-term borrowings, at fair value	31,462	29,514
Long-term debt, at fair value	264,575	271,686
Other liabilities, at fair value	$ 62,701	$ 59,983
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)	719,800	779,200
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)	3,099,678,668	3,099,763,661
Treasury stock (in shares)	1,072,893,485	1,017,674,452
Consumer
Loans, net of unearned income, at fair value	$ 275,895	$ 288,839
Corporate
Loans, net of unearned income, at fair value	400,939	387,044
Fair value
Securities borrowed or purchased under agreements to resell, at fair value	187,876	185,204
Other assets, at fair value	11,083	14,613
Interest-bearing deposits in U.S. offices, at fair value	910	879
Interest-bearing deposits in offices outside the U.S., at fair value	1,839	1,079
Securities loaned or sold under agreements to repurchase, at fair value	76,705	60,206
Short-term borrowings, at fair value	7,358	4,683
Long-term debt, at fair value	76,375	67,063
Other liabilities, at fair value	3,279	6,835
Fair value | Consumer
Loans, net of unearned income, at fair value	14	14
Fair value | Corporate
Loans, net of unearned income, at fair value	$ 7,693	$ 6,840