Consolidated Balance Sheet (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Held-to-maturity securities, Fair Value	$ 42,521	$ 43,493
Securities, pledged as collateral	949	1,000
Mortgage loans, carried at fair value	$ 3,993	$ 3,110
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares-authorized (actual number of shares)	4,000,000,000	4,000,000,000
Common stock, shares issued(actual number of shares)	2,125,725,742	2,125,725,742
Treasury stock, shares (actual number of shares)	393,719,352	380,534,801
Time deposits greater than 250,000	$ 5,500	$ 2,600
Available-for-Sale Securities [Member]
Securities, pledged as collateral	949	1,018
Trading Securities [Member]
Securities, pledged as collateral	$ 89	$ 121

Face amount or stated value per share of common stock.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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