Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets
Available-for-sale securities	$ 266,201	$ 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)	2,491,750	2,006,250
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	9,000,000,000	9,000,000,000
Common stock, shares issued (in 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)	406,866,534	390,144,630
Limited program wide credit enhancement	$ 2,000	$ 2,000
Trading assets
Assets
Assets pledged	125,224	125,034
Securities
Assets
Assets pledged	22,616	24,912
Other assets
Assets
Assets pledged	1,219	1,399
Recurring
Assets
Federal funds sold and securities purchased under resale agreements	28,670	28,585
Securities borrowed	495	992
Available-for-sale securities	266,201	298,752
Loans, at fair value	2,431	2,611
Liabilities
Deposits	11,485	8,807
Federal funds purchased and securities loaned or sold under repurchase agreements	3,586	2,979
Other borrowed funds	13,987	14,739
Accounts payable and other liabilities	23	26
Beneficial interests issued by consolidated VIEs, at fair value	1,330	2,162
Long-term debt	31,316	30,226
Recurring | Other assets
Assets
Other assets at fair value	$ 8,603	$ 11,909