v3.8.0.1
Condensed Consolidated Statements of Financial Condition (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2018
Dec. 31, 2017
Statement Of Financial Position [Abstract]    
Property and equipment, accumulated depreciation $ 698 $ 658
Intangible assets, accumulated amortization $ 210 $ 219
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 500,000,000 500,000,000
Common stock, shares issued 171,252,185 171,252,185
Common stock, shares outstanding 160,308,362 159,977,115
Treasury stock, common shares 10,943,823 11,275,070