Aon Benfield , a division of Aon Plc, estimates that global reinsurer capital totalled $505 billion at December 31, 2012, an increase of 11 per cent relative to December 31, 2011.This calculation, by Aon Benfield, which is one of the world's leading reinsurance intermediary and full-service capital advisor, is a broad measure of capital available for insurers to trade risk with and includes both traditional and non-traditional forms of reinsurer capital. (Click on graphic)