CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Class A Shares [Member]
Common stock, par value
Common stock, shares issued	141,722,471	130,053,993
Common stock, shares outstanding	141,722,471	130,053,993
Class B Shares [Member]
Common stock, par value
Common stock, shares issued	1	1
Common stock, shares outstanding	1	1