Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Assets
Available-for-sale securities	$ 241,754	$ 298,752
Stockholders’ equity
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	200,000,000	200,000,000
Preferred stock, shares issued (in shares)	2,606,750	2,006,250
Common stock, par value (in dollars per share)	$ 1	$ 1.00
Common stock, shares authorized (in shares)	9,000,000,000	9,000,000,000
Common stock, shares issued (shares)	4,104,933,895	4,104,933,895
Shares held in Trust, shares (in shares)	472,953	472,953
Treasury stock, shares (in shares)	(441,459,392)	(390,144,630)
Limited program wide credit enhancement	$ 2,000	$ 2,000
Loans reported as trading assets
Assets
Assets pledged	115,284	125,034
Securities
Assets
Assets pledged	14,883	24,912
Other assets
Assets
Assets pledged	1,286	1,399
Recurring
Assets
Federal funds sold and securities purchased under resale agreements	23,141	28,585
Securities borrowed	395	992
Available-for-sale securities	241,754	298,752
Loans	2,861	2,611
Liabilities
Deposits	12,516	8,807
Federal funds purchased and securities loaned or sold under repurchase agreements	3,526	2,979
Other borrowed funds	9,911	14,739
Accounts payable and other liabilities	4,401	4,155
Beneficial interests issued by consolidated VIEs	787	2,162
Long-term debt	33,065	30,226
Recurring | Other assets
Assets
Other assets at fair value	$ 7,604	$ 11,909