Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Condensed Consolidated Balance Sheets [Abstract]
Cash and investments segregated and on deposit for regulatory purposes, resale agreements	$ 9,806	[1]	$ 10,186	[1]
Securities held to maturity, Fair Value	37,110		34,743
Preferred stock, par value	$ 0.01		$ 0.01
Preferred stock, aggregate liquidation preference	$ 885		$ 885
Common stock, shares authorized	3,000,000,000		3,000,000,000
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares issued	1,487,543,446		1,487,543,446
Treasury stock, shares	174,397,672		176,821,202

[1] Included in cash and investments segregated and on deposit for regulatory purposes in the Company’s consolidated balance sheets.