CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Trading account assets, pledged to creditors	$ 106,695	$ 105,458
Investments, pledged to creditors	26,989	21,423
Investments, at fair value	308,980	312,326
Loans at fair value	5,029	5,287
Interest-bearing deposits in U.S. offices	284,164	247,716
Interest-bearing deposits in offices outside the U.S.	486,304	488,163
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)	269,520	102,038
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)	3,062,098,976	3,043,153,204
Treasury stock, shares (in shares)	32,856,062	14,269,301
Corporate
Loans at fair value	4,072	4,056
Portion at fair value
Federal funds sold and securities borrowed or purchased under agreements to resell	141,481	160,589
Other assets, at fair value	7,123	13,299
Interest-bearing deposits in U.S. offices	988	889
Interest-bearing deposits in offices outside the U.S.	689	558
Federal funds purchased and securities loaned or sold under agreements to repurchase	51,545	116,689
Short-term borrowings	3,692	818
Long-term debt	26,877	29,764
Other liabilities	2,011	2,910
Portion at fair value | Investments (available-for-sale and nonmarketable equity securities)
Investments, at fair value	291,216	294,463
Portion at fair value | Consumer
Loans at fair value	957	1,231
Portion at fair value | Corporate
Loans at fair value	4,072	4,056
Consolidated VIEs
Investments, at fair value	10,416	10,751
Consolidated VIEs | Portion at fair value
Long-term debt	909	1,330
Consolidated VIEs | Portion at fair value | Consumer
Loans at fair value	910	1,191
Consolidated VIEs | Portion at fair value | Corporate
Loans at fair value	$ 14	$ 157