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Debt and Credit Facilities (Summary of Debt Obligations) (Details) - USD ($) $ in Thousands	May. 04, 2015	Mar. 24, 2015	Mar. 17, 2010	Nov. 02, 2005	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Debt, fair value					$ 984,776	$ 279,000
Debt					972,362	249,522
RenaissanceRe Finance, Inc. | 3.700% Senior Notes Due April 1, 2025
Debt Instrument [Line Items]
Debt instrument maturity date		April 1, 2025
Debt, fair value					290,025	0
Debt					299,415	0
RenRe North America Holdings Inc. | 5.75% Senior Notes Due March 15, 2020
Debt Instrument [Line Items]
Debt instrument maturity date			March 15, 2020
Debt, fair value					275,000	279,000
Debt					249,578	249,522
Platinum Underwriters Finance, Inc. | Series B 7.50% Notes Due June 1, 2017
Debt Instrument [Line Items]
Debt instrument maturity date				June 1, 2017
Debt, fair value					274,063	0
Debt					274,618	0
DaVinciRe Holdings Ltd. | 4.750% Senior Notes Due May 1, 2025
Debt Instrument [Line Items]
Debt instrument maturity date	May 1, 2025
Debt, fair value					145,688	0
Debt					$ 148,751	$ 0

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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