XML 160 R144.htm IDEA: XBRL DOCUMENT
v3.20.4

Schedule III. Supplementary Insurance Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items] |  |  |
Deferred Policy Acquisition Costs | $ 633,521 | $ 663,991 | $ 476,661
Future Policy Benefits, Losses, Claims and Loss Expenses | 10,381,138 | 9,384,349 | 6,076,271
Unearned Premiums | 2,763,599 | 2,530,975 | 1,716,021
Premium Revenue | 3,952,462 | 3,338,403 | 1,976,129
Net Investment Income | 354,038 | 424,207 | 269,965
Benefits, Claims, Losses and Settlement Expenses | 2,924,609 | 2,097,021 | 1,120,018
Amortization of Deferred Policy Acquisition Costs | 897,677 | 762,232 | 432,989
Other Operating Expenses | 206,687 | 222,733 | 178,267
Net Written Premiums | 4,096,333 | 3,381,493 | 2,131,902
Property |  |  |
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items] |  |  |
Deferred Policy Acquisition Costs | 118,327 | 79,795 | 66,656
Future Policy Benefits, Losses, Claims and Loss Expenses | 4,371,745 | 4,073,850 | 3,086,254
Unearned Premiums | 659,236 | 539,183 | 379,943
Premium Revenue | 1,936,215 | 1,627,494 | 1,050,831
Net Investment Income | 0 | 0 | 0
Benefits, Claims, Losses and Settlement Expenses | 1,435,735 | 965,424 | 497,895
Amortization of Deferred Policy Acquisition Costs | 353,700 | 313,761 | 177,912
Other Operating Expenses | 135,547 | 139,015 | 112,954
Net Written Premiums | 2,037,200 | 1,654,259 | 1,055,188
Casualty and Specialty |  |  |
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items] |  |  |
Deferred Policy Acquisition Costs | 515,194 | 584,196 | 410,005
Future Policy Benefits, Losses, Claims and Loss Expenses | 6,008,685 | 5,310,059 | 2,985,393
Unearned Premiums | 2,104,363 | 1,991,792 | 1,336,078
Premium Revenue | 2,016,247 | 1,710,909 | 925,298
Net Investment Income | 0 | 0 | 0
Benefits, Claims, Losses and Settlement Expenses | 1,488,662 | 1,131,637 | 622,320
Amortization of Deferred Policy Acquisition Costs | 543,977 | 448,678 | 255,079
Other Operating Expenses | 71,140 | 84,546 | 64,883
Net Written Premiums | 2,059,133 | 1,727,234 | 1,076,714
Other |  |  |
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items] |  |  |
Deferred Policy Acquisition Costs | 0 | 0 | 0
Future Policy Benefits, Losses, Claims and Loss Expenses | 708 | 440 | 4,624
Unearned Premiums | 0 | 0 | 0
Premium Revenue | 0 | 0 | 0
Net Investment Income | 354,038 | 424,207 | 269,965
Benefits, Claims, Losses and Settlement Expenses | 212 | (40) | (197)
Amortization of Deferred Policy Acquisition Costs | 0 | (207) | (2)
Other Operating Expenses | 0 | (828) | 430
Net Written Premiums | $ 0 | $ 0 | $ 0

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: | srt_SupplementaryInsuranceInformationBySegmentLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of amortization of deferred policy acquisition cost recognized, as disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column I)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of insurance benefit, claim, loss and settlement expenses incurred, as disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column H)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of deferred policy acquisition cost capitalized on contract remaining in force, as disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column B)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of reserve for future policy claim payable and loss expense to be incurred, disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column C)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net investment income earned, disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column G)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationNetInvestmentIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating expense classified as other, disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column J)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationOtherOperatingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of premium revenue earned, disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column F)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationPremiumRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after premiums ceded and assumed, of premium written, disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column K)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationPremiumsWritten
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of premium not yet earned, disclosed in supplementary insurance information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column D)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationUnearnedPremiums
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rnr_PropertySegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rnr_CasualtyandSpecialtySegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |