XML 128 R112.htm IDEA: XBRL DOCUMENT
v3.20.4

Taxation (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Mar. 22, 2019
Operating Loss Carryforwards [Line Items] |  |  |  |
Increase (decrease) in valuation allowance | $ 13,000,000.0 | $ 40,400,000 | $ 5,300,000 |
Income taxes paid | 5,668,000 | 9,749,000 | $ 341,000 |
Unrecognized tax benefits | 0 | 0 |  |
Interest and penalties accrued on unrecognized tax benefits | $ 0 | $ 0 |  |
Bermuda |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Statutory income tax rate | 0.00% |  |  |
Singapore |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Foreign statutory income tax rate | 17.00% |  |  |
Operating loss carryforwards | $ 25,700,000 |  |  |
Ireland |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Foreign statutory income tax rate | 12.50% |  |  |
Operating loss carryforwards | $ 5,600,000 |  |  |
U.S. |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Expected tax rate | 5.00% |  |  |
Foreign statutory income tax rate | 21.00% |  |  |
Operating loss carryforwards | $ 379,000,000.0 |  |  |
Australia |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Foreign statutory income tax rate | 30.00% |  |  |
Operating loss carryforwards | $ 3,900,000 |  |  |
Switzerland |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Foreign statutory income tax rate | 21.20% |  |  |
Operating loss carryforwards | $ 262,200,000 |  |  |
U.K. |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Foreign statutory income tax rate | 19.00% |  |  |
Operating loss carryforwards | $ 122,200,000 |  |  |
TMR |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred tax assets, valuation allowance |  |  |  | $ 35,700,000

X
- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deferred Tax Assets, Valuation Allowance + References No definition available. + Details
Name: | rnr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssetsValuationAllowance
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective Income Tax Rate Reconciliation, at Foreign Statutory Income Tax Rate, Percent + References No definition available. + Details
Name: | rnr_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent
Namespace Prefix: | rnr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate, Dividend Withholding Tax, Percent + References No definition available. + Details
Name: | rnr_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDividendWithholdingTaxPercent
Namespace Prefix: | rnr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4297-108586 + Details
Name: | us-gaap_IncomeTaxesPaidNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_OperatingLossCarryforwards
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_OperatingLossCarryforwardsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
Name: | us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=country_SG
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=country_IE
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_InternalRevenueServiceIRSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=country_AU
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=country_CH
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=rnr_TMRMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |