XML 70 R55.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Organization (Details) | Nov. 13, 2014
--- | ---
RenaissanceRe Upsilon Fund Ltd | Not Primary Beneficiary |
Variable Interest Entity [Line Items] |
Percent of segregated funds owned by third party investors | 100.00%

X
- Definition Variable Interest Entity, Nonredeemable Nonvoting Shares, Segregated Funds, Owned by Third Parties + References No definition available. + Details
Name: | rnr_VariableInterestEntityNonredeemableNonvotingSharesSegregatedFundsOwnedbyThirdParties
Namespace Prefix: | rnr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=rnr_RenaissanceReUpsilonFundLtd.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |