CONSOLIDATED BALANCE SHEET (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Federal funds sold and securities borrowed or purchased under agreements to resell, at fair value	$ 242,929	$ 236,813
Trading account assets, pledged to creditors	82,157	80,986
Available-for-sale securities, pledged to creditors	8,115	8,239
Held-to-maturity securities, pledged to creditors	898	843
Loans, net of unearned income	628,595	624,369
Other assets, at fair value	126,627	128,008
Interest-bearing deposits in U.S. offices	310,572	300,972
Interest-bearing deposits in offices outside the U.S.	430,919	414,120
Federal funds purchased and securities loaned or sold under agreements to repurchase, at fair value	148,230	141,821
Short-term borrowings, at fair value	26,127	30,701
Long-term debt, at fair value	208,530	206,178
Other liabilities	$ 55,880	$ 61,631
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)	770,120	770,120
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)	3,099,523,273	3,099,482,042
Treasury stock (in shares)	346,265,476	327,090,192
Consumer
Loans, net of unearned income	$ 320,556	$ 325,063
Corporate
Loans, net of unearned income	308,039	299,306
Fair value
Federal funds sold and securities borrowed or purchased under agreements to resell, at fair value	137,360	133,204
Non-marketable equity securities, pledged to creditors	1,529	1,774
Other assets, at fair value	17,281	15,729
Interest-bearing deposits in U.S. offices	351	434
Interest-bearing deposits in offices outside the U.S.	956	778
Federal funds purchased and securities loaned or sold under agreements to repurchase, at fair value	40,939	33,663
Short-term borrowings, at fair value	3,473	2,700
Long-term debt, at fair value	27,526	26,524
Other liabilities	12,681	10,796
Fair value | Consumer
Loans, net of unearned income	28	29
Fair value | Corporate
Loans, net of unearned income	$ 4,007	$ 3,457