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Business Changes and Developments	12 Months Ended
Business Changes and Developments	Dec. 31, 2014
Business Changes and Developments [Abstract]
Business changes and developments	Business changes and developments Subsequent events As part of the Firm’s business simplification agenda, the sale of a portion of the Private Equity Business (“Private Equity sale”) was completed on January 9, 2015. Concurrent with the sale, a new independent management company was formed by the former One Equity Partners (“OEP”) investment professionals. The new management company will provide investment management services to the acquirer of the investments sold in the Private Equity sale and for the portion of private equity investments retained by the Firm. Upon closing, this transaction did not have a material impact on the Firm’s Consolidated balance sheets or its results of operations.