XML 94 R78.htm IDEA: XBRL DOCUMENT
v3.20.4

Investments (Schedule of Other Investments) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of Investments [Line Items] |  |  |
Other investments | $ 1,256,948 | $ 1,087,377 |
Initial commitments | 1,800,000 |  |
Fulfilled commitments | 809,000 |  |
Unfunded commitments | 1,000,000 |  |
Other Investments |  |  |
Schedule of Investments [Line Items] |  |  |
Net unrealized gains recognized in earnings due to change in estimate | (2,400) | (5,500) | $ 300
Catastrophe bonds |  |  |
Schedule of Investments [Line Items] |  |  |
Other investments | 881,290 | 781,641 |
Private equity investments |  |  |
Schedule of Investments [Line Items] |  |  |
Other investments | 345,501 | 271,047 |
Senior secured bank loan funds |  |  |
Schedule of Investments [Line Items] |  |  |
Other investments | 19,604 | 22,598 |
Hedge funds |  |  |
Schedule of Investments [Line Items] |  |  |
Other investments | $ 10,553 | $ 12,091 |

X
- Definition Net Investment Income, Change In Estimate + References No definition available. + Details
Name: | rnr_NetInvestmentIncomeChangeInEstimate
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Private Equity Investments and Other Entities, Commitments Fulfilled + References No definition available. + Details
Name: | rnr_PrivateEquityInvestmentsandOtherEntitiesCommitmentsFulfilled
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Private Equity Investments and Other Entities, Initial Commitments + References No definition available. + Details
Name: | rnr_PrivateEquityInvestmentsandOtherEntitiesInitialCommitments
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Private Equity Investments and Other Entities, Unfunded Commitments + References No definition available. + Details
Name: | rnr_PrivateEquityInvestmentsandOtherEntitiesUnfundedCommitments
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term 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)) -URI http://asc.fasb.org/extlink&oid=120400017&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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_OtherLongTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=rnr_CatastropheBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_InvestmentTypeAxis=rnr_SeniorSecuredBankLoanFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_HedgeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |