CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Securities borrowed or purchased under agreements to resell, at fair value	$ 262,536	$ 251,322
Trading account assets, pledged to creditors	190,227	120,236
Available-for-sale securities, pledged to creditors	8,989	8,721
Held-to-maturity securities, pledged to creditors	1,119	1,923
Equity securities, at fair value	1,213	1,162
Loans, net of unearned income	721,020	699,483
Mortgage servicing rights	367	495
Other assets, at fair value	112,873	107,709
Interest-bearing deposits in U.S. offices	462,327	401,418
Interest-bearing deposits in offices outside the U.S.	523,774	484,669
Securities loaned or sold under agreements to repurchase, at fair value	222,324	166,339
Short-term borrowings, at fair value	54,951	45,049
Long-term debt, at fair value	266,098	248,760
Other liabilities	$ 60,141	$ 57,979
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)	719,200	719,200
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)	3,099,632,709	3,099,602,856
Treasury stock (in shares)	1,017,824,700	985,479,501
Consumer
Loans, net of unearned income	$ 288,430	$ 309,548
Corporate
Loans, net of unearned income	432,590	389,935
Fair value
Securities borrowed or purchased under agreements to resell, at fair value	155,637	153,193
Other assets, at fair value	14,663	12,830
Interest-bearing deposits in U.S. offices	1,090	1,624
Interest-bearing deposits in offices outside the U.S.	1,557	695
Securities loaned or sold under agreements to repurchase, at fair value	62,734	40,651
Short-term borrowings, at fair value	8,364	4,946
Long-term debt, at fair value	52,914	55,783
Other liabilities	4,339	6,343
Fair value | Consumer
Loans, net of unearned income	18	18
Fair value | Corporate
Loans, net of unearned income	$ 3,981	$ 4,067