Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Assets
Assets pledged	$ 140,400	$ 135,800
Securities	202,009	202,225
Loans	$ 3,076	$ 2,508
Stockholders' equity
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	200,000,000	200,000,000
Preferred stock, shares issued (in shares)	2,606,750	2,606,750
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, at cost (in shares)	472,953	472,953
Treasury stock, at cost (in shares)	744,049,788	679,635,064
Trading assets
Assets
Assets pledged	$ 121,495	$ 109,887
Securities
Assets
Assets pledged	13,307	17,969
Other assets
Assets
Assets pledged	5,559	7,980
Recurring
Assets
Federal funds sold and securities purchased under resale agreements	12,793	14,732
Securities borrowed	4,052	3,049
Securities	202,009	202,225
Loans	3,076	2,508
Liabilities
Deposits	19,696	21,321
Federal funds purchased and securities loaned or sold under repurchase agreements	866	697
Short-term borrowings	8,730	9,191
Accounts payable and other liabilities	6,633	9,208
Beneficial interests issued by consolidated VIEs	1	45
Long-term debt	50,096	47,519
Recurring | Other assets
Assets
Other assets	$ 13,869	$ 16,128