XML 88 R72.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Fair Value Measurements (Quantitative Information Used As Level 3 Inputs) (Details) $ in Thousands | Dec. 31, 2018 USD ($) $ / shares | Dec. 31, 2017 USD ($) | Jun. 30, 2016 USD ($)
--- | --- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other investments | $ 784,933 | $ 594,793 |
Other assets and (liabilities) | 4,968 | 2,542 |
Total other assets and (liabilities) | 13,327 | 5,494 |
Fair Value, Measurements, Recurring |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other investments | 784,933 | 594,793 |
Other assets and (liabilities) | 4,040 | 1,684 |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other investments | 54,545 | 0 |
Total other assets and (liabilities) | 8,359 | 2,952 |
Fair Value, Measurements, Recurring | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other investments |  |  | $ 54,545
Other assets and (liabilities) | 46,186 |  |
Fair Value, Measurements, Recurring | Private equity investments |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other investments | 242,647 | 196,220 |
Fair Value, Measurements, Recurring | Private equity investments | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other investments | 54,545 | 0 |
Fair Value, Measurements, Recurring | Private equity investments | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other investments |  |  | $ 54,545
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Total other assets and (liabilities) | 8,359 | 2,952 |
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Total other assets and (liabilities) | 8,359 | $ 2,952 |
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Total other assets and (liabilities) | 8,359 |  |
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group one | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Other assets and (liabilities) | 550 |  |
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group two | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Total other assets and (liabilities) | $ 8,909 |  |
Discount rate | Fair Value, Measurements, Recurring | Private equity investments | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Minimum |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | $ / shares | 0.168 |  |
Discount rate | Fair Value, Measurements, Recurring | Private equity investments | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Maximum |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | $ / shares | 0.296 |  |
Discount rate | Fair Value, Measurements, Recurring | Private equity investments | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Weighted Average |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | $ / shares | 0.232 |  |
Discount rate | Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group two | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Weighted Average |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | 0.025 |  |
Bond price | Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group one | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Minimum |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | $ / shares | 100.74 |  |
Bond price | Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group one | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Maximum |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | $ / shares | 107.82 |  |
Bond price | Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group one | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Weighted Average |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | $ / shares | 104.66 |  |
Liquidity discount | Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group one | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Weighted Average |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | 0.013 |  |
Net undiscounted cash flows | Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group two | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Weighted Average |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | 10,528,000 |  |
Expected loss ratio | Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts, group two | Internal Valuation Model Valuation Technique | Significant Unobservable Inputs (Level 3) | Weighted Average |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Significant observable and unobservable inputs | 0.361 |  |

X
- Definition Value of input used to measure alternative investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
Name: | us-gaap_AlternativeInvestmentMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of other assets. + References No definition available. + Details
Name: | us-gaap_OtherAssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f,g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_OtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of other liabilities. + References No definition available. + Details
Name: | us-gaap_OtherLiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=rnr_InternalValuationModelValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rnr_AssumedAndCededReInsuranceContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rnr_AssumedandCededReInsuranceContractsGroupTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rnr_AssumedandCededReInsuranceContractsGroupThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputOfferedPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountForLackOfMarketabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rnr_MeasurementInputUndiscountedCashFlowsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rnr_MeasurementInputExpectedLossRatioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |