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v2.4.1.9

Taxation (Income Tax Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax [Line Items] |  |  |  |  |  |  |  |  |  |  |
Expected income tax benefit |  |  |  |  |  |  |  |  | $ 4,725 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 9,930 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 8,889 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Change in valuation allowance |  |  |  |  |  |  |  |  | (5,554)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | (8,574)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | (6,212)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Other |  |  |  |  |  |  |  |  | 221 us-gaap_IncomeTaxReconciliationOtherReconcilingItems | (3,048)us-gaap_IncomeTaxReconciliationOtherReconcilingItems | (4,090)us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Income tax (expense) benefit | $ (401)us-gaap_IncomeTaxExpenseBenefit | $ (245)us-gaap_IncomeTaxExpenseBenefit | $ 204 us-gaap_IncomeTaxExpenseBenefit | $ (166)us-gaap_IncomeTaxExpenseBenefit | $ (1,336)us-gaap_IncomeTaxExpenseBenefit | $ (223)us-gaap_IncomeTaxExpenseBenefit | $ (11)us-gaap_IncomeTaxExpenseBenefit | $ (122)us-gaap_IncomeTaxExpenseBenefit | $ (608)us-gaap_IncomeTaxExpenseBenefit | $ (1,692)us-gaap_IncomeTaxExpenseBenefit | $ (1,413)us-gaap_IncomeTaxExpenseBenefit
Bermuda | Domestic Country |  |  |  |  |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |  |  |  |  |
Statutory income tax rate |  |  |  |  |  |  |  |  | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember / us-gaap_StatementGeographicalAxis = country_BM |  |
U.S. | Internal Revenue Service (IRS) |  |  |  |  |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign statutory income tax rate |  |  |  |  |  |  |  |  | 35.00%rnr_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember / us-gaap_StatementGeographicalAxis = country_US |  |
Ireland | Foreign |  |  |  |  |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign statutory income tax rate |  |  |  |  |  |  |  |  | 12.50%rnr_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / us-gaap_StatementGeographicalAxis = country_IE |  |
United Kingdom | Foreign |  |  |  |  |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign statutory income tax rate |  |  |  |  |  |  |  |  | 21.50%rnr_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / us-gaap_StatementGeographicalAxis = country_GB |  |
Singapore | Foreign |  |  |  |  |  |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |  |  |  |  |  |
Foreign statutory income tax rate |  |  |  |  |  |  |  |  | 17.00%rnr_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / us-gaap_StatementGeographicalAxis = country_SG |  |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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