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Organization (Details) (RenaissanceRe Upsilon Fund Ltd, Not Primary Beneficiary)	0 Months Ended
	Nov. 13, 2014
RenaissanceRe Upsilon Fund Ltd | Not Primary Beneficiary
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonredeemable Nonvoting Shares, Segregated Funds, Owned by Third Parties	100.00%rnr_VariableInterestEntityNonredeemableNonvotingSharesSegregatedFundsOwnedbyThirdParties / dei_LegalEntityAxis = rnr_RenaissanceReUpsilonFundLtdMember / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember

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- Definition

Variable Interest Entity, Nonredeemable Nonvoting Shares, Segregated Funds, Owned by Third Parties

+ References

No definition available.

+ Details

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- Details

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