Organization	12 Months Ended
Dec. 31, 2012
Disclosure - Organization [Abstract]
Organization	1. Organization PartnerRe Ltd. (the Company) predominantly provides reinsurance on a worldwide basis, and certain specialty insurance lines, through its principal wholly-owned subsidiaries, including Partner Reinsurance Company Ltd. (PartnerRe Bermuda), Partner Reinsurance Europe SE (PartnerRe Europe) and Partner Reinsurance Company of the U.S. (PartnerRe U.S.). Risks reinsured include, but are not limited to, property, casualty, motor, agriculture, aviation/space, catastrophe, credit/surety, engineering, energy, marine, specialty property, specialty casualty, multiline and other lines, mortality, longevity and health and alternative risk products. The Company's alternative risk products include weather and credit protection to financial, industrial and service companies on a worldwide basis. The Company was incorporated in August 1993 under the laws of Bermuda. The Company commenced operations in November 1993 upon completion of the sale of common shares and warrants pursuant to subscription agreements and an initial public offering. The Company completed the acquisition of SAFR (subsequently renamed PartnerRe SA) in 1997, the acquisition of the reinsurance operations of Winterthur Group (Winterthur Re) in 1998 and the acquisition of PARIS RE Holdings Limited (Paris Re) in 2009. Effective December 31, 2012, the Company completed the acquisition of Presidio Reinsurance Group, Inc. (Presidio), a California-based U.S. specialty accident and health reinsurance and insurance writer. Given the effective date, the Consolidated Statements of Operations and Cash Flows for the year ended December 31, 2012 do not include Presidio's results.

Organization

12 Months Ended

Dec. 31, 2012

Disclosure - Organization [Abstract]

1. Organization

PartnerRe Ltd. (the Company) predominantly provides reinsurance on a worldwide basis, and certain specialty insurance lines, through its principal wholly-owned subsidiaries, including Partner Reinsurance Company Ltd. (PartnerRe Bermuda), Partner Reinsurance Europe SE (PartnerRe Europe) and Partner Reinsurance Company of the U.S. (PartnerRe U.S.). Risks reinsured include, but are not limited to, property, casualty, motor, agriculture, aviation/space, catastrophe, credit/surety, engineering, energy, marine, specialty property, specialty casualty, multiline and other lines, mortality, longevity and health and alternative risk products. The Company's alternative risk products include weather and credit protection to financial, industrial and service companies on a worldwide basis.

The Company was incorporated in August 1993 under the laws of Bermuda. The Company commenced operations in November 1993 upon completion of the sale of common shares and warrants pursuant to subscription agreements and an initial public offering.

The Company completed the acquisition of SAFR (subsequently renamed PartnerRe SA) in 1997, the acquisition of the reinsurance operations of Winterthur Group (Winterthur Re) in 1998 and the acquisition of PARIS RE Holdings Limited (Paris Re) in 2009.

Effective December 31, 2012, the Company completed the acquisition of Presidio Reinsurance Group, Inc. (Presidio), a California-based U.S. specialty accident and health reinsurance and insurance writer. Given the effective date, the Consolidated Statements of Operations and Cash Flows for the year ended December 31, 2012 do not include Presidio's results.