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: