European Stocks Drop Before Fed Decision; CGG Falls on Guidance

European stocks retreated, following their biggest rally in two months, as investors awaited the outcome of a two-day Federal Reserve meeting starting today.

CGG SA, the largest seismic surveyor of oilfields, fell the most on the benchmark index after cutting its 2013 earnings target. Rexel SA lost 1 percent as Ray Investment SARL sold a 7 percent stake in the company. Zurich Insurance Group AG climbed