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v2.4.1.9

Fair Value Measurements (Quantitative Information Used As Level 3 Inputs) (Details) (USD $) | 12 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Total other assets and (liabilities) | (13,908,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis | (13,908,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis | $ (8,233,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis
Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 310,544,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 310,544,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |
Total other assets and (liabilities) | (8,934,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | (8,934,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | (2,490,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Net Asset Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 281,932,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PrivateEquityFundsMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember | 281,932,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PrivateEquityFundsMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Senior secured bank loan funds | Net Asset Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 19,316,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementBasisAxis = rnr_SeniorSecuredBankLoanFundsMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember | 19,316,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementBasisAxis = rnr_SeniorSecuredBankLoanFundsMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Hedge funds | Net Asset Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 2,570,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_HedgeFundsMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember | 2,570,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_HedgeFundsMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Corporate | Discounted Cash Flow Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 15,700,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_DiscountedCashFlowValuationTechniqueMember | 15,700,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_DiscountedCashFlowValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Corporate | Discounted Cash Flow Valuation Technique | Weighted Average or Actual |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Credit spread | 0.80%us-gaap_FairValueInputsEntityCreditRisk / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_DiscountedCashFlowValuationTechniqueMember |  |
Liquidity discount | 1.00%us-gaap_FairValueInputsDiscountForLackOfMarketability / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_DiscountedCashFlowValuationTechniqueMember |  |
Risk-free rate | 0.50%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_DiscountedCashFlowValuationTechniqueMember |  |
Dividend rate | 6.50%us-gaap_FairValueAssumptionsExpectedDividendRate / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_DiscountedCashFlowValuationTechniqueMember |  |
Significant Unobservable Inputs (Level 3) | Fixed maturity investments |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 15,660,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_FixedMaturitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 15,660,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_FixedMaturitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Net Asset Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 281,900,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_PrivateEquityFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember | 281,900,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_PrivateEquityFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Net Asset Valuation Technique | Low |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Estimated performance |  | (42.10%)rnr_FairValueInputsEstimatedPerformance / us-gaap_FairValueByAssetClassAxis = us-gaap_PrivateEquityFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Net Asset Valuation Technique | Maximum |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Estimated performance |  | 17.00%rnr_FairValueInputsEstimatedPerformance / us-gaap_FairValueByAssetClassAxis = us-gaap_PrivateEquityFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Net Asset Valuation Technique | Weighted Average or Actual |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Estimated performance |  | 0.10%rnr_FairValueInputsEstimatedPerformance / us-gaap_FairValueByAssetClassAxis = us-gaap_PrivateEquityFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Senior secured bank loan funds | Net Asset Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 19,300,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = rnr_SeniorSecuredBankLoanFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember | 19,300,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = rnr_SeniorSecuredBankLoanFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Senior secured bank loan funds | Net Asset Valuation Technique | Weighted Average or Actual |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Estimated performance |  | 0.80%rnr_FairValueInputsEstimatedPerformance / us-gaap_FairValueByAssetClassAxis = rnr_SeniorSecuredBankLoanFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Hedge funds | Net Asset Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 2,570,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_HedgeFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember | 2,570,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_HedgeFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Hedge funds | Net Asset Valuation Technique | Low |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Estimated performance |  | 0.00%rnr_FairValueInputsEstimatedPerformance / us-gaap_FairValueByAssetClassAxis = us-gaap_HedgeFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Hedge funds | Net Asset Valuation Technique | Maximum |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Estimated performance |  | 0.00%rnr_FairValueInputsEstimatedPerformance / us-gaap_FairValueByAssetClassAxis = us-gaap_HedgeFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Hedge funds | Net Asset Valuation Technique | Weighted Average or Actual |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Estimated performance |  | 0.00%rnr_FairValueInputsEstimatedPerformance / us-gaap_FairValueByAssetClassAxis = us-gaap_HedgeFundsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_NetAssetValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Other investments |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Assets, fair value | 303,818,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_OtherInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 303,818,000 us-gaap_AssetsFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = us-gaap_OtherInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |
Significant Unobservable Inputs (Level 3) | Assumed And Ceded Re Insurance Contracts Member | Internal Valuation Model Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Liabilities, fair value | (8,700,000)us-gaap_LiabilitiesFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember | (8,700,000)us-gaap_LiabilitiesFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |
Total other assets and (liabilities) | (8,744,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember | (8,744,000)rnr_OtherAssetsAndliabilitiesMeasuredonRecurringBasis / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Assumed And Ceded Re Insurance Contracts Member | Internal Valuation Model Valuation Technique | Low |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Net undiscounted cash flows | 160,000 rnr_FairValueInputsNetUndiscountedCashFlows / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |  |
Contract period | 549 rnr_FairValueInputsContractPeriod / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember | 549 rnr_FairValueInputsContractPeriod / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Assumed And Ceded Re Insurance Contracts Member | Internal Valuation Model Valuation Technique | Maximum |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Net undiscounted cash flows | 8,006,000 rnr_FairValueInputsNetUndiscountedCashFlows / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |  |
Contract period | 1,100 rnr_FairValueInputsContractPeriod / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember | 1,100 rnr_FairValueInputsContractPeriod / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |
Significant Unobservable Inputs (Level 3) | Assumed And Ceded Re Insurance Contracts Member | Internal Valuation Model Valuation Technique | Weighted Average or Actual |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Net undiscounted cash flows | 2,528,000 rnr_FairValueInputsNetUndiscountedCashFlows / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |  |
Contract period | 832 rnr_FairValueInputsContractPeriod / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember | 832 rnr_FairValueInputsContractPeriod / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |
Discount rate | 1.10%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = rnr_AssumedAndCededReInsuranceContractsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = rnr_WeightedAverageOrActualMember / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |  |
Significant Unobservable Inputs (Level 3) | Weather Contract | Internal Valuation Model Valuation Technique |  |  |
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items] |  |  |
Liabilities, fair value | (200,000)us-gaap_LiabilitiesFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = rnr_WeatherContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember | (200,000)us-gaap_LiabilitiesFairValueDisclosureRecurring / us-gaap_FairValueByAssetClassAxis = rnr_WeatherContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_ValuationTechniqueAxis = rnr_InternalValuationModelValuationTechniqueMember |

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Risk-free interest rate assumption used in valuing an instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Risk associated with risk of default, credit spread risk and downgrade risk, expressed as a percentage, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. + References No definition available. + Details
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Data Type: | na
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