CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Federal funds sold and securities borrowed or purchased under agreements to resell, at fair value	$ 265,526	$ 232,478
Trading account assets, pledged to creditors	113,280	99,460
Available-for-sale securities, pledged to creditors	7,901	9,493
Held-to-maturity securities, pledged to creditors	1,094	435
Equity securities, available for sale		189
Loans, net of unearned income	671,180	667,034
Other assets, at fair value	109,827	103,926
Interest-bearing deposits in U.S. offices	337,228	318,613
Interest-bearing deposits in offices outside the U.S.	455,788	426,889
Federal funds purchased and securities loaned or sold under agreements to repurchase, at fair value	177,828	156,277
Short-term borrowings, at fair value	37,233	44,452
Long-term debt, at fair value	236,822	236,709
Other liabilities	$ 54,336	$ 57,021
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)	761,400	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)	3,099,558,751	3,099,523,273
Treasury stock (in shares)	582,953,339	529,614,728
Consumer
Loans, net of unearned income	$ 323,632	$ 333,656
Corporate
Loans, net of unearned income	347,548	333,378
Fair value
Federal funds sold and securities borrowed or purchased under agreements to resell, at fair value	169,113	132,949
Non-marketable equity securities, pledged to creditors	1,432	1,395
Other assets, at fair value	21,703	18,559
Interest-bearing deposits in U.S. offices	334	303
Interest-bearing deposits in offices outside the U.S.	1,294	1,162
Federal funds purchased and securities loaned or sold under agreements to repurchase, at fair value	49,246	40,638
Short-term borrowings, at fair value	4,093	4,627
Long-term debt, at fair value	35,462	31,392
Other liabilities	17,819	13,961
Fair value | Consumer
Loans, net of unearned income	22	25
Fair value | Corporate
Loans, net of unearned income	$ 2,978	$ 4,349