RenaissanceRe Holdings is a holding company. Through its subsidiaries, Co. is a global provider of reinsurance and insurance. Co.'s segments are: Property, which includes its catastrophe class of business, comprising excess of loss reinsurance and excess of loss retrocessional reinsurance to insure insurance and reinsurance companies against natural and man-made catastrophes, and its other property class of business, comprising proportional reinsurance, property per risk, property (re)insurance, binding facilities and regional United States multi-line reinsurance; and Casualty and Specialty, in which Co. provides its casualty and specialty reinsurance products and excess of loss coverage.